Rotary drum type equal-shear membrane separation device

Abstract

The utility model discloses a drum type equal shear membrane separation device, relates to liquid separation technical field, including pool body, servo motor, drum, brush and peristaltic pump, the drum is placed in the pool body and rotatingly connected, servo motor drives the drum, the outer surface of the drum is wrapped with membrane, and the membrane is arranged in the pool body. The brush is located on the side face of the rotary drum and provided with a distance adjusting mechanism, a hole is formed in the drum face of the rotary drum and communicated with the interior of the pool body, and the interior of the rotary drum is communicated with the peristaltic pump. The utility model provides a rotary drum type equal-shear membrane separation device, which combines dynamic rotation of a rotary drum with an automatic cleaning system, is adjustable and controllable in flow and rotating speed, generates uniform shear force through rotation of the rotary drum, delays membrane pollution and reduces manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of liquid separation technology, specifically to a rotary drum type isoshear membrane separation device. Background Technology

[0002] In traditional membrane separation technology, membrane fouling severely restricts separation efficiency and lifespan. Existing devices mostly use static membrane modules or simple rotating structures, resulting in uneven shear force distribution and limited cleaning effectiveness. Furthermore, the lack of precise control over flow rate and rotation speed leads to large fluctuations in separation efficiency, making it unstable. Utility Model Content

[0003] Technical problem to be solved by the utility model

[0004] The technical problem to be solved by this utility model is to provide a rotary drum type equal shear membrane separation device, which combines dynamic rotation of the drum with an automated cleaning system. The flow rate and speed can be adjusted. The rotation of the drum generates uniform shear force, which delays membrane fouling and reduces manual intervention.

[0005] Technical solution

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] A rotary drum type isoshear membrane separation device includes a tank, a servo motor, a rotary drum, a brush, and a peristaltic pump. The rotary drum is placed inside the tank and rotatably connected. The servo motor drives the rotary drum. The outer surface of the rotary drum is covered with a membrane. The brush is located on the side of the rotary drum and is provided with a distance adjustment mechanism. The surface of the rotary drum has a hole and communicates with the inside of the tank. The inside of the rotary drum is connected to the peristaltic pump.

[0008] Tank: Contains the liquid for processing. Servo motor: Drives the rotating drum, providing the power source. Rotating drum: Placed inside the tank, its surface is covered with a membrane, and it has holes on its surface that communicate with the interior of the tank. Brush: Located on the side of the rotating drum, with a distance adjustment mechanism for cleaning the membrane surface. Peristaltic pump: Communicates with the interior of the rotating drum to help control fluid flow. The rotating drum, driven by the servo motor, generates uniform shear force, which helps prevent membrane fouling. The brush's position is adjusted via the distance adjustment mechanism to effectively clean the membrane surface and reduce contaminant accumulation. Both flow rate and rotation speed can be precisely adjusted by the system to ensure the stability and reliability of separation efficiency.

[0009] Optionally, the servo motor is connected to a frequency modulator.

[0010] Frequency converters are mainly used to adjust the operating frequency of servo motors, thereby achieving precise control of motor speed.

[0011] Optionally, the distance adjustment mechanism includes a support rod, a mounting base, a pin, and a rotating handle. The brush is fixed to the support rod via the mounting base, and the mounting base is fastened to the side of the support rod. The brush is fixed to the mounting base. The support rod is rotatably connected to the pool body and extends out of the pool body. The rotating handle is provided at the end of the support rod. The support rod has a shaft hole that engages with the pin. The pin is installed on the outer wall of the pool body. When the brush faces the rotating drum, it contacts the surface of the rotating drum.

[0012] The support rod, as the main structural component, is used to mount the brush and its related components and can rotate within the tank. The mounting base is fixed to the cylindrical side of the support rod for mounting the brush; rotation adjusts whether the brush contacts the rotating drum. A pin engages with a shaft hole on the support rod and is mounted on the outer wall of the tank, limiting the rotation of the support rod. A rotating handle is located at the end of the support rod; manually rotating the handle adjusts the angle of the support rod, thereby changing the position of the brush relative to the rotating drum.

[0013] Optionally, the fixing seat is fixed to the outer wall of the pool body and the pin passes through it.

[0014] It is directly fixed to the outer wall of the pool, and the pin passes through it. The function of the fixing seat is to provide a stable support point for the pin, ensuring that the support rod can rotate accurately and stably around the pin.

[0015] Optionally, a nut may be fitted onto the pin on the outer side of the fixing seat.

[0016] By installing a nut on the outside of the pin, it is possible to effectively prevent the pin from loosening or slipping due to external forces, ensuring that the support rod can rotate stably around the pin without unnecessary displacement.

[0017] Optionally, the brush is uniformly fixed to the mounting base.

[0018] The brushes should be evenly distributed along the mounting base to ensure that each part applies the same cleaning force to the surface of the rotating drum.

[0019] Optionally, the end of the rotating drum is provided with a pipe and connected to a water outlet hose, which is connected to the peristaltic pump.

[0020] By using tubing located at the end of the rotating drum, the liquid that has undergone membrane separation can be effectively collected from inside the drum. The use of a peristaltic pump allows for precise control of the fluid extraction rate, which is crucial for maintaining optimal operating conditions, ensuring separation efficiency, and preventing membrane fouling. The use of flexible hoses for connection increases system flexibility, facilitates adjustment and maintenance, and also reduces the risk of pipeline damage due to mechanical vibration or other movements.

[0021] Optionally, the two ends of the rotating drum are rotatably connected to the pool body in a sealed manner.

[0022] The sealed rotating connection effectively prevents unfiltered liquid from leaking from both ends of the rotating drum into the filtered liquid, ensuring the purity of the separation process.

[0023] Optionally, the rotating handle end of the support rod is sealed and rotatably connected to the pool body.

[0024] Good sealing performance helps maintain the required pressure difference across the membrane.

[0025] Beneficial effects

[0026] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0027] The technical solution provided by this utility model features a rotating drum driven by a servo motor, generating uniform shearing force to help prevent membrane fouling. The brushes are positioned via a distance adjustment mechanism to effectively clean the membrane surface and reduce contaminant accumulation. Both flow rate and rotation speed can be precisely adjusted by the system to ensure the stability and reliability of the separation efficiency. Attached Figure Description

[0028] Figure 1 A schematic diagram of the structure of a rotary drum type equal shear membrane separation device proposed for an embodiment of this utility model;

[0029] Figure 2 A cross-sectional view of the support rod of a rotary drum type equal shear membrane separation device proposed in an embodiment of this utility model;

[0030] Figure 3 A support rod in state one of the rotary drum type equal shear membrane separation devices proposed in an embodiment of this utility model;

[0031] Figure 4 The second state of the support rod of the rotary drum type equal shear membrane separation device proposed in the embodiment of this utility model;

[0032] 1. Pool body; 2. Frequency converter; 3. Servo motor; 4. Drive belt; 5. Drive shaft; 6. Bearing; 7. Membrane; 8. Rotary drum; 9. Support rod; 10. Brush; 11. Outlet hose; 12. Peristaltic pump; 13. Mounting base; 14. Pin; 15. Nut; 16. Fixing base; 17. Rotary handle. Detailed Implementation

[0033] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0034] Example 1

[0035] Combined with appendix Figure 1 A rotary drum type isoshear membrane separation device includes a tank body 1, a servo motor 3, a rotary drum 8, a brush 10 and a peristaltic pump 12. The tank body 1 is constructed of corrosion-resistant materials (such as 316L stainless steel / PVC), and has a removable sealing cover plate (including an observation window) on the top. A drain outlet (with a shut-off valve) is provided on the bottom right side, and a liquid level sensor interface is integrated on the side wall.

[0036] The rotating drum 8 is placed inside the pool body 1 and rotatably connected. The mounting cavity of the rotating drum 8 is a cylindrical cavity. The servo motor 3 drives the rotating drum 8. The main shaft of the rotating drum 8 is directly connected to the servo motor 3 through the transmission belt 4 and the transmission shaft 5. High-precision bearings 6 and bearing seats (with mechanical seal components) are set at both ends. The bearing seats 6 can integrate heat dissipation fins, and forced air cooling is formed after the servo motor 3 drives the rotation.

[0037] The rotating drum 8 is covered with a membrane 7. The body of the rotating drum 8 is a hollow cylindrical structure with uniformly distributed perforations on its surface, with a pore diameter of 0.5-2mm and an open area ratio of 30%-50%. The outer layer is wrapped with a composite separation membrane 7 (such as a PVDF ultrafiltration membrane 7), which is fixed by clamp-type flanges at both ends. The internal flow channel can be axially arranged with guide spiral blades, and the end is connected to a conical water collection cavity to reduce eddy current losses. A rotary joint with a double-end mechanical seal is installed at the end of the main shaft of the rotating drum 8, and it is connected to the outlet hose 11.

[0038] The brush 10 is located on the side of the rotating drum 8 and is equipped with a distance adjustment mechanism. The surface of the rotating drum 8 is provided with holes and communicates with the inside of the pool body 1. The inside of the rotating drum 8 is connected to the peristaltic pump 12.

[0039] Servo motor 3 is connected to frequency modulator 2.

[0040] Combined with appendix Figure 2 The distance adjustment mechanism includes a support rod 9, a mounting base 13, a pin 14, and a rotating handle 17. The brush 10 is fixed to the support rod 9 via the mounting base 13. The support rod 9 assembly is made of 20mm diameter stainless steel, penetrating the side wall of the pool body 1. A stuffing box seal is used at the penetration point. Positioning scale lines are engraved on the rod, and the end is machined into a hexagonal head to fit the rotating handle 17. Both ends of the rotating cylinder 8 are sealed and rotatably connected to the pool body 1. The rotating handle 17 end of the support rod 9 is also sealed and rotatably connected to the pool body 1.

[0041] Mounting base 13 is fastened to the side of support rod 9. Brush 10 is fixed to mounting base 13. Mounting base 13 is an aluminum alloy L-shaped bracket, which is locked to support rod 9 by T-bolts. Brush 10 is evenly fixed to mounting base 13. Brush 10 has 3 sets of nylon bristles arranged at equal intervals along the axis of rotating drum 8. The hardness of nylon bristles is Shore A85. The bristles are in 15° inclined contact with the surface of membrane 7.

[0042] The support rod 9 is rotatably connected to the pool body 1 and extends out of the pool body 1. A rotating handle 17 is provided at the end of the support rod 9. The support rod 9 has a shaft hole that engages with a pin 14. The pin 14 is installed on the outer wall of the pool body 1. When the brush 10 faces the rotating drum 8, it contacts the surface of the rotating drum 8. The support rod 9 has two states: state one and state two, combined with the attached... Figure 3 , 4 In state one, the brush 10 faces away from the rotating drum 8; in state two, the brush 10 faces the rotating drum 8. The mounting base 13 itself has a certain height. When facing the rotating drum 8, the brush 10 will be closer to the rotating drum 8, thus allowing the brush 10 to contact the membrane 7 in state two. In state one, the support rod 9 will not touch the membrane 7, avoiding interference. The rotating handle 17 uses a magnetohydrodynamic seal, and two O-rings are installed at the rod insertion point of the pool body 1.

[0043] The fixing seat 16 is fixed to the outer wall of the pool body 1 and has a pin 14 through it. The fixing seat 16 is welded to the outer wall of the pool body 1. The end of the pin 14 is equipped with a wing nut 15 and a lock washer to prevent loosening. The pin 14 adopts a stepped shaft structure and is clearance-fitted with the shaft hole of the support rod 9.

[0044] A nut 15 is fitted on the pin 14 on the outer side of the fixed base 16.

[0045] The inner end of the rotating drum 8 is equipped with a pipe connected to the outlet hose 11, which in turn connects to the peristaltic pump 12. The outlet hose 11 is made of negative pressure resistant silicone tubing and connects to the water collection chamber of the rotating drum 8 via a quick-connect fitting. The peristaltic pump 12 is equipped with a flow feedback module, forming a closed-loop control with the servo motor 3. The end of the rotating drum 8 uses a combined seal: a lip seal ring (main seal) + graphite packing (auxiliary seal).

[0046] Working principle:

[0047] Initial position adjustment: combined with the attached Figure 3 , 4 By rotating the handle 17 to adjust the angle of the support rod 9, the brush 10 can be moved to a position close to the surface of the rotating drum 8. Since the support rod 9 can rotate on the tank body 1 and is positioned by the pin 14, the distance between the brush 10 and the surface of the rotating drum 8 can be flexibly adjusted. When the brush 10 is adjusted to the appropriate position and angle, it will contact the surface of the rotating drum 8 with appropriate pressure, thus effectively removing contaminants from the surface of the membrane 7 without damaging it.

[0048] Application environment:

[0049] The wastewater to be treated is injected into tank 1, with the liquid level covering the membrane 7 of the rotating drum 8. The servo motor 3 is set to 200 rpm via frequency converter 2, and the device is started. As the rotating drum 8 rotates, shear force is generated on the surface of the membrane 7, separating suspended particles from the wastewater; the brush 10 can physically clean the membrane 7 when needed. The peristaltic pump 12 is set to a flow rate of 5 L / min to discharge the separated permeate.

[0050] Example 2

[0051] Combined with appendix Figure 1-4 The application environment of the rotary drum type isoshear membrane separation device in this embodiment, compared with the technical solution of embodiment 1, is as follows:

[0052] In the biopharmaceutical field, adjusting the rotation speed to 300 rpm improves protein separation efficiency; using corrosion-resistant membrane materials extends the service life of the device.

[0053] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rotary drum type isoshear membrane separation device, characterized in that, The device includes a pool body, a servo motor, a rotating drum, a brush, and a peristaltic pump. The rotating drum is placed inside the pool body and is rotatably connected. The servo motor drives the rotating drum. The rotating drum is covered with a membrane. The brush is located on the side of the rotating drum and is equipped with a distance adjustment mechanism. The rotating drum has holes on its surface that communicate with the inside of the pool body. The rotating drum is connected to the peristaltic pump.

2. The rotary drum type equal shear membrane separation device according to claim 1, characterized in that, The servo motor is connected to the frequency modulator.

3. The rotary drum type isoshear membrane separation device according to claim 1, characterized in that, The distance adjustment mechanism includes a support rod, a mounting base, a pin, and a rotating handle. The brush is fixed to the support rod via the mounting base, which is fastened to the side of the support rod. The brush is fixed to the mounting base. The support rod is rotatably connected to the pool body and extends out of the pool body. The rotating handle is provided at the end of the support rod. The support rod has a shaft hole that engages with the pin. The pin is installed on the outer wall of the pool body. When the brush faces the rotating drum, it contacts the surface of the rotating drum.

4. The rotary drum type isoshear membrane separation device according to claim 3, characterized in that, The fixing seat is fixed to the outer wall of the pool body and the pin passes through it.

5. The rotary drum type isoshear membrane separation device according to claim 4, characterized in that, A nut is fitted onto the pin on the outside of the fixed base.

6. The rotary drum type isoshear membrane separation device according to claim 3, characterized in that, The brush is evenly fixed to the mounting base.

7. The rotary drum type equal shear membrane separation device according to claim 1, characterized in that, The end of the rotating drum is provided with a pipe and connected to the water outlet hose, which is connected to the peristaltic pump.

8. The rotary drum type equal shear membrane separation device according to claim 1, characterized in that, The two ends of the rotating drum are sealed and rotatably connected to the pool body.

9. A rotary drum type isoshock membrane separation device according to claim 3, characterized in that, The rotating handle end of the support rod is connected to the pool body in a sealed rotatable manner.

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