Bacterial cellulose membrane float-sinking type cleaning and purifying device

Abstract

The utility model discloses a bacterial cellulose membrane floating and sinking type cleaning and purifying device mainly relates to the field of bacterial cellulose membrane cleaning. Including the cleaning tank of bottom area with heating component, the top of cleaning tank is equipped with the slot, one side of slot is equipped with the floating and sinking mechanism with the turnover action, the floating and sinking mechanism includes two strip board frames of parallel arrangement, and the turnover of based on floating and sinking mechanism makes strip board frame be located on both sides of slot and set up horizontally, is equipped with the cylinder body of vertical location above slot between strip board frame, the bottom of cylinder body is equipped with the cylinder rod of telescopic cooperation with it, the bottom of cylinder rod is equipped with the pressure frame, the net frame of adapting with its section is equipped in the cleaning tank, and the net frame is equipped with the frame mouth in the bottom. The utility model has the beneficial effect that it can promote cellulose membrane and cleaning liquid full immersion and exchange, and improve the cleaning effect and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bacterial cellulose membrane cleaning, specifically a bacterial cellulose membrane flotation cleaning and purification device. Background Technology

[0002] The cleaning process of bacterial cellulose membranes is a crucial step in their purification process, aiming to remove impurities and improve the purity and performance of the cellulose membrane. This plays a vital role in subsequent applications and product quality.

[0003] Bacterial cellulose membranes present several unique challenges during cleaning, primarily stemming from their physical properties and the limitations of the cleaning process. First, the lightweight nature of bacterial cellulose membranes makes them prone to floating on the surface of the cleaning solution, hindering effective contact. This floating results in low material exchange efficiency between the membrane and the cleaning solution, making it difficult to remove impurities effectively. Second, the relatively fragile structure of cellulose membranes cannot withstand strong mechanical agitation. Agitation can cause physical damage, disrupting their microstructure and affecting their performance. For example, agitation can clog or destroy the pore structure, leading to a decrease in important properties such as air and water permeability. Furthermore, agitation can cause membrane breakage or deformation, further reducing their usability. These issues mean that cleaning cellulose membranes largely relies on manual labor, making it difficult to improve efficiency and guarantee cleaning results. Utility Model Content

[0004] The purpose of this invention is to provide a bacterial cellulose membrane floating-sinking cleaning and purification device, which can promote the full immersion and exchange of the cellulose membrane with the cleaning solution, thereby improving the cleaning effect and efficiency.

[0005] To achieve the above objectives, this utility model employs the following technical solution: A bacterial cellulose membrane floating-sinking cleaning and purification device includes a cleaning tank with a heating component at the bottom. The top of the cleaning tank has an opening, and a floating-sinking mechanism with a flipping action is provided on one side of the opening. The floating-sinking mechanism includes two strip-shaped plates arranged side by side. When the strip-shaped plates are positioned horizontally on both sides of the opening based on the flipping action of the floating-sinking mechanism, a cylinder is provided vertically above the opening between the strip-shaped plates. The bottom end of the cylinder is provided with a cylinder rod that telescopically cooperates with it. The bottom end of the cylinder rod is provided with a pressure frame. A mesh frame adapted to its cross-section is provided inside the cleaning tank. The mesh frame has a frame opening at the bottom.

[0006] The upper part of the cleaning tank is provided with an inlet pipe that passes through it, the lower part of the cleaning tank is provided with an outlet pipe that passes through it, and the bottom of the cleaning tank is provided with a recessed installation groove, in which an electric heating rod is installed.

[0007] The cleaning tank has a boss near the bottom of the tank. The boss is arranged on four sides around the tank wall. The boss is located above the mounting groove. A mesh plate is installed on the bottom surface of the boss. The edge of the mesh plate is fixed to a rectangular frame. Multiple screws pass through the frame and the frame is fixed to the boss by screws.

[0008] Four smooth rods are fixed to the top surface of the boss. A rectangular frame is fixed at the frame opening. The inner side of the frame is chamfered. The corner of the frame is provided with a sliding sleeve that passes through it. The smooth rods pass through the sliding sleeves and the two slide together vertically.

[0009] The groove has an outwardly extending edge plate on its periphery, and a mounting bracket is provided on one side of the edge plate. The mounting bracket has strip-shaped holes on both sides, and the length direction of the strip-shaped holes is perpendicular to the side of the edge plate it is close to. The floating mechanism includes a base, and the two ends of the base are respectively provided with through holes that pass through it vertically. Double-ended bolts for passing through the strip-shaped holes are provided in the through holes.

[0010] The floating and sinking mechanism includes a base installed on one side opposite the slot, a bearing seat fixed on the base, and a seat body extending vertically upward for 20cm-50cm. A shaft is passed through the seat body, and the two ends of the shaft are perpendicularly connected to one end of the strip plate frame on the same side.

[0011] The strip plate frame has a vertical plate at one end away from the shaft, and a folded plate is provided on the bottom side of the vertical plate. The folded plate has a right-angle bending structure in the middle. When the strip plate frame is parallel to the slot, the vertical plate extends vertically, and the inside corner of the folded plate is in contact with the outer side of the plate.

[0012] The top of the base has a horizontally penetrating circular mounting port. A cut is provided on one side of the mounting port, and a hoop plate extending outward is provided at the cut position. Fastening bolts are passed through the upper and lower corresponding hoop plates, and the mounting port and the shaft are locked together by nuts.

[0013] A groove seat is provided in the center between the two upright plates. Horizontally extending mounting rods are fixed on both sides of the groove seat. The outer ends of the mounting rods are fixed to the upright plates, and the cylinder body is fixed inside the groove seat.

[0014] The shaft is rotatably connected to the top of the base, or the strip plate frame is rotatably connected to both ends of the shaft. A threaded sleeve is provided through the folding plate, and a screw is threaded into the internal thread of the threaded sleeve. A handle is provided at the outer end of the screw. When the bottom surface of the folding plate rests on the edge plate, the top circumferential surface of the screw is close to or in contact with the bottom surface of the edge plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This device addresses the unique needs of cleaning bacterial cellulose membranes by cleverly combining the fragile and easily floating physical properties of cellulose membranes with the process requirements of alkaline boiling cleaning. Through a modular floating and sinking mechanism, the membrane is gently guided to rise and fall steadily in the cleaning solution and repeatedly sink and float for cleaning. This not only effectively avoids damage to the membrane material but also improves cleaning efficiency and uniformity. It achieves automated cleaning operation while enhancing the cleaning effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention.

[0017] Figure 2 This is a schematic diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0019] Figure 4 This is a schematic diagram showing the disassembled main structure of the cleaning tank of this utility model.

[0020] Figure 5 This is a schematic diagram showing the disassembled components of the floating and sinking mechanism of this utility model.

[0021] The labels shown in the attached diagram: 1. Cleaning tank; 2. Edge plate; 3. Inlet pipe; 4. Outlet pipe; 5. Mounting groove; 6. Heating rod; 7. Boss; 8. Mesh plate; 9. Frame; 10. Smooth pole column; 11. Mesh frame; 12. Square frame; 13. Chamfered bevel; 14. Sliding sleeve; 15. Mounting bracket; 16. Strip hole; 17. Base; 18. Shaft seat; 19. Seat body; 20. Mounting port; 21. Hoop plate; 22. Fastening bolt; 23. Shaft; 24. Strip plate frame; 25. Vertical plate; 26. Folding plate; 27. Groove seat; 28. Mounting rod; 29. ​​Cylinder body; 30. Pressure frame; 31. Threaded sleeve; 32. Handle; 33. Connecting fastener. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] Example 1:

[0024] This example enables automatic heating, alkaline boiling, and water changing. The specific structure includes a rectangular cleaning tank 1 with an opening on its top side. A horizontally extending edge plate 2 is located at the opening, used for installing and fitting other components.

[0025] The upper part of the cleaning tank 1 is provided with an inlet pipe 3 that passes through it, and the lower part of the cleaning tank 1 is provided with an outlet pipe 4 that passes through it. The inlet pipe 3 is used to connect to a water source and automatically inject water into it through a water pump. The outlet pipe 4 can be used to empty the cleaning tank 1 to realize automatic water replacement.

[0026] The bottom of the cleaning tank 1 is provided with a sunken installation groove 5, and an electric heating rod 6 is installed in the installation groove 5 for heating. The installation groove 5 is a rectangular groove smaller than the cleaning tank 1.

[0027] The cleaning tank 1 has a protrusion 7 near its bottom. The protrusion 7 surrounds the tank wall on four sides and is located approximately 10cm above the mounting groove 5. A mesh plate 8 is mounted on the bottom surface of the protrusion 7. The edge of the mesh plate 8 is fixed to a rectangular frame 9. Multiple screws pass through the frame 9, which is then fixed to the protrusion 7, allowing for detachable installation and easy replacement of the mesh plate 8 for maintenance. The mesh plate 8 prevents the cellulose membrane from getting too close to the heating element, avoiding excessive thermal reaction.

[0028] Four smooth rod columns 10 are fixed on the top surface of the boss 7. The smooth rod columns 10 are circular steel shaft structures with smooth surfaces. The bottom end of the smooth rod columns 10 is fixed on the boss 7. The four smooth rod columns 10 are respectively set at the inside corner of the cleaning tank 1.

[0029] The cleaning tank 1 is equipped with a mesh frame 11 that is easily detachable and can be raised and lowered. The size of the mesh frame 11 is adapted to the cross-section of the cleaning tank 1. The mesh frame 11 has an opening on its bottom side, and a rectangular frame 12 is fixed at the opening. The inner side of the frame 12 has a chamfered bevel 13, which forms a funnel-shaped structure for the opening, facilitating the gentle introduction of the membrane into the mesh frame 11. The mesh frame 11 has a density less than water and can float on the water surface.

[0030] The opening of the mesh frame 11 is at the bottom and arches upward to form a receiving structure above the opening. Thus, when the bacterial cellulose membrane sinks downward, even if the opening sinks to the bottom, there is still sufficient receiving space to avoid pressing on the membrane.

[0031] The corner of the frame 12 is provided with a sliding sleeve 14 that passes through it. The sliding sleeve 14 is a cylindrical tube structure. The smooth rod column 10 passes through the sliding sleeve 14 and the two slide vertically together. Through the four smooth rod columns 10, the frame 9 can be quickly engaged and guided, so that the frame 9 remains horizontal when rising and falling in the cleaning tank 1, avoiding problems such as tilting and flipping. Moreover, the top of the smooth rod column 10 is exposed, which can be quickly inserted and engaged with the sliding sleeve 14, thereby conveniently and quickly realizing the engagement and disengagement of the wire mesh frame 11 and the cleaning tank 1.

[0032] An integrally formed mounting bracket 15 extends outward from one side of the edge plate 2. The mounting bracket 15 has a U-shaped groove in the middle to facilitate the avoidance of the cylinder body 29 equipment. The mounting bracket 15 has strip-shaped holes 16 on both sides. The length direction of the strip-shaped holes 16 is perpendicular to the side of the edge plate 2 that it is approaching. A floating mechanism is detachably mounted on the mounting bracket 15.

[0033] The floating mechanism includes a detachable and adjustable base 17 fixed to a mounting frame 15. Each end of the base 17 has a through hole extending vertically through it. A double-ended bolt is installed within each through hole to pass through a strip-shaped hole 16. The double-ended bolt passes through both the strip-shaped hole 16 and the through hole on the same side, thereby fixing both ends of the base 17 to a certain position on the strip-shaped hole 16. Based on this structure, the base 17 can be quickly fixed to the mounting frame 15, and the distance between the base 17 and the opening of the cleaning tank 1 is adjustable. Since the base 17 is used to mount a power mechanism, the power mechanism can be fitted to cleaning tank openings of different sizes and structures, thus achieving modular assembly without the need to design and manufacture power structures of various sizes specifically for the heating tank.

[0034] A bearing seat 18 is fixed on the base 17. The bearing seat 18 can be fixed to the base 17 by welding or fasteners. The bearing seat 18 includes a seat body 19 that extends vertically upward at least 20cm. A circular mounting port 20 is horizontally penetrating the top of the seat body 19. A cut is provided on one side of the mounting port 20. A hoop plate 21 that extends outward is provided at the cut position. Fastening bolts 22 are penetrating the upper and lower corresponding hoop plates 21. The mounting port 20 and the shaft 23 are locked by nuts. The shaft 23 can be rotated by loosening the nuts. The shaft 23 can be locked by tightening the nuts and stopped by friction.

[0035] A shaft 23 passes through the mounting opening 20. The length of the shaft 23 is adapted to the width / length of the cleaning tank 1. A strip-shaped plate frame 24 perpendicular to the shaft 23 is fixedly connected to both ends of the shaft 23. The strip-shaped plate frame 24 is located on both sides of the cleaning tank 1. A vertical plate 25 is provided at the end of the strip-shaped plate frame 24 away from the shaft 23 and is perpendicular to it and integrally formed. The vertical plate 25 and the strip-shaped plate frame 24 form an L-shaped structure. When the vertical plate 25 is located on both sides of the tank opening and is set horizontally, the vertical plate 25 extends vertically downward to compensate for the height of the raised base 19.

[0036] Since the cleaning process also requires heating and boiling alkali, maintaining a certain height can improve operational safety. The upward-extending seat 19 raises the entire floating mechanism relative to the trough opening, making room for the space above the trough opening. This allows the cylinder 29 and the detection component to be at a certain height from the trough opening. This height is not limited to that shown in the figure and described in this example; it can be increased to 30-50cm from the trough opening. The height of the seat 19 is compensated by the L-shaped strip frame 24 and the upright plate 25.

[0037] An L-shaped folding plate 26 is fixed to one end of the upright plate 25 away from the strip plate frame 24. The folding plate 26 has a right-angle folding structure in the middle. A reinforcing rib is provided between the folding plate 26 and the upright plate 25. When the strip plate frame 24 is in a horizontal state on both sides of the slot, the inside corner of the folding plate 26 engages with the outer edge of the corresponding edge plate 2, so that the folding plate 26 rests on the edge plate 2, thereby supporting the strip plate frame 24 and the upright plate 25.

[0038] Based on this example, the shaft 23 can be locked by the seat 19. Therefore, by loosening the fastening bolt 22, the entire floating mechanism can be flipped over. When the strip plate frame 24 is flipped to both sides of the slot and the folding plate 26 falls on the edge plate 2, tightening the fastening bolt 22 can help stop the entire structure and maintain stability during the subsequent downward floating action.

[0039] A groove seat 27 is provided in the center between the two upright plates 25. Horizontally extending mounting rods 28 are fixed on both sides of the groove seat 27. The outer ends of the mounting rods 28 are fixed to the upright plates 25. A cylinder body 29 is fixed inside the groove seat 27. A cylinder rod that telescopically cooperates with the bottom of the cylinder body 29 is provided. A pressure frame 30 is fixed to the bottom of the cylinder body 29. The pressure frame 30 is I-shaped, which can maximize the exposure of the mesh frame 11 and not obstruct the water flow, while maintaining the stability of the structure and having good downward pressure strength.

[0040] The method of using this device is as follows: Inject cleaning solution into cleaning tank 1. The cleaning solution can be a 0.1 mol / L sodium hydroxide solution, or you can try using clean water first and then add sodium hydroxide to adjust the pH. Then, put the obtained cellulose membrane into cleaning tank 1, with the frame opening of the mesh frame 11 facing down, and insert the sliding sleeve 14 into the smooth rod column 10 so that the mesh frame 11 falls on the water surface, thereby covering the cellulose membrane underneath.

[0041] The electric heater is activated to heat the cleaning solution. The fastening bolts 22 are loosened, and the floating mechanism is flipped towards the tank opening until the folding plate 26 rests on the side plates 2. The fastening bolts 22 are then tightened to lock the floating mechanism. The cylinder body 29 is activated by extending and retracting the cylinder rod, pressing down on the top surface of the mesh frame 11 via the pressure frame 30 to a certain depth. The mesh frame 11 catches all the cellulose membranes and submerges them in the middle of the cleaning tank 1. The cylinder rod is then lifted, and the mesh frame and cellulose membranes slowly rise to the water surface due to buoyancy. The cylinder rod is then repeatedly pressed down, causing the cellulose membranes to repeatedly sink and rise, thus achieving sufficient contact with the cleaning solution. This achieves thorough purification and cleaning.

[0042] The cleaning device designed in this scheme effectively solves the problems of cellulose membranes being too light, easily floating, and unable to be stirred during the cleaning process. Specific results are as follows: 1. Automatic heating and alkaline boiling By installing an electric heating rod 6 at the bottom of the cleaning tank 1, an automatic heating function can be achieved. This allows the cleaning solution (such as sodium hydroxide solution) to heat up rapidly, reaching the conditions for alkaline boiling. The heating process not only accelerates the dissolution and removal of impurities but also makes the structure of the cellulose membrane more stable. The automatic heating function reduces the hassle of manual operation and improves cleaning efficiency.

[0043] 2. Automatic water change The water inlet pipe 3 at the top and the water outlet pipe 4 at the bottom of the cleaning tank 1, together with a water pump, enable automatic water replacement. This function effectively removes impurities and wastewater generated during the cleaning process, ensuring that the cleaning solution remains clean at all times. Multiple water changes gradually improve the purity of the cellulose membrane and prevent impurities from re-adhering to the membrane surface.

[0044] 3. Design of frame 11 and mesh panel 8 The mesh frame 11 has a density less than water, allowing it to float on the surface. The frame opening of the mesh frame 11 faces downwards and arches upwards to form a containment structure. This design allows the cellulose membrane to be held within the mesh frame 11, preventing it from being crushed even if the mesh frame 11 sinks to the bottom, thus avoiding damage to the cellulose membrane due to excessive compression. The mesh plate 8 further prevents the cellulose membrane from getting too close to the heating element, avoiding excessive thermal reaction. These multiple design features effectively protect the structure of the cellulose membrane.

[0045] 4. The smooth pole post 10 mates with the sliding sleeve 14. The cooperation between the bare pole 10 and the sliding sleeve 14 enables the wire mesh frame 11 to move quickly up and down and horizontally within the cleaning tank 1. This design not only ensures the stability of the wire mesh frame 11 during the lifting process and prevents it from tilting or flipping, but also allows the wire mesh frame 11 to be quickly engaged and disengaged from the cleaning tank 1, improving the convenience and efficiency of operation.

[0046] 5. Floating / sinking mechanism and cylinder 29 drive The design of the floating and sinking mechanism allows the mesh frame 11 to repeatedly sink and rise, driven by the cylinder 29. This process allows the cellulose membrane to actively penetrate the cleaning solution, achieving full contact and solving the problem of the cellulose membrane floating on the surface and not making sufficient contact with the cleaning solution. Through the extension and retraction of the cylinder 29, the cellulose membrane can move repeatedly in the cleaning solution, ensuring that impurities are fully removed.

[0047] 6. Modular design The modular design of the floating and sinking mechanism allows the entire device to adapt to cleaning tanks 1 of different sizes and structures. By adjusting the position and fixing method of the base 17, the floating and sinking mechanism can be quickly installed on the cleaning tank 1, improving the versatility and flexibility of the device. This design not only reduces production costs but also improves the adaptability and maintainability of the device.

[0048] 7. Safety and Stability By elevating the flotation mechanism to maintain a safe height, potential safety accidents such as burns during operation are avoided. Simultaneously, the L-shaped strip frame 24 and upright plate 25 compensate for the increased height of the base 19, ensuring the stability of the entire device. During the cleaning process, the cellulose membrane can undergo thorough cleaning and purification in a safe and stable environment.

[0049] In summary, this solution effectively solves the problems of cellulose membranes being too light, easily floating, and unable to be stirred during the cleaning process. It achieves gentle membrane guiding, overheat protection, stable lifting and lowering, and repeated floating and sinking cleaning, improving cleaning efficiency and the purity of cellulose membranes, while ensuring operational safety and stability.

[0050] Example 2:

[0051] Most of the structure in this example is the same as in Embodiment 1, except for the stop structure for shaft 23: The two ends of the shaft 23 are respectively rotatably connected to the strip plate frame 24 perpendicular to it, so the strip plate frame 24 can rotate freely relative to the shaft 23, realizing outward and inward flipping on one side of the slot.

[0052] The strip frame 24 is fixed by other structures: a threaded sleeve 31 is provided through the folded plate 26, and a screw is threaded in the internal thread of the threaded sleeve 31. The outer end of the screw is provided with a handle 32. After the screw passes through the folded plate 26, when the bottom surface of the folded plate 26 rests on the edge plate 2, the top circumferential surface of the screw is close to or in contact with the bottom surface of the edge plate 2, thereby locking and fixing the strip frame 24 above the slot.

[0053] The downward movement of the cylinder rod is only used to press down the mesh frame 11, and does not require rapid extension and retraction. The upward movement is based on buoyancy and is relatively slow, which allows the cellulose membrane to be fully soaked in the cleaning solution. Therefore, the overall operation is very gentle and can be limited by the screw.

[0054] Example 3:

[0055] Most of the structure in this example is the same as in Embodiment 1, except for the installation of the shaft member 23. Two vertically extending seats 19 are symmetrically arranged on the shaft seat 18. The height of each seat 19 is 40cm. A circular mounting port 20, horizontally penetrating the top of each seat 19, is provided. The shaft member 23, rotatably connected to the mounting port 20, passes through the port. The rotation of the shaft member 23 enables the floating mechanism to flip on one side of the slot. Strip-shaped plate frames 24, perpendicular to the shaft member 23, are fixed to both ends of the shaft member 23. For the horizontal fixation of the strip-shaped plate frames 24 relative to the slot, corresponding through holes are provided vertically at corresponding positions on the folding plate 26 and the edge plate 2. Fasteners, such as bolts, pass through these through holes. When the folding plate 26 rests on the edge plate 2, the fasteners secure the folding plate 26 to the edge plate 2. This method provides a tighter fixation compared to Embodiment 2, preventing any vibration during cylinder rod operation.

[0056] Example 4:

[0057] Based on Examples 1, 2, and 3, monitoring and detection components can also be added.

[0058] Temperature and OD sensors are installed in the cleaning tank 1 to monitor dynamic pH and OD values ​​at any time.

[0059] The mounting rod 28 is provided with a connecting fastener 33. The connecting fastener 33 has a horizontal hole through which the connecting rod passes and is slidably connected. One side of the connecting fastener 33 has a first slit communicating with the horizontal hole. A first bolt passes through the first slit to lock the connecting fastener 33 and the mounting rod 28 and to allow for quick adjustment of the position of the connecting fastener 33. The end of the connecting fastener 33 away from the horizontal hole also has a vertical hole through which it passes vertically. One side of the vertical hole has a second slit communicating with it. A second bolt passes through the second slit. A liquid level sensor, timer, monitor, etc. are installed in the vertical hole to facilitate monitoring and recording of the process.

Claims

1. A bacterial cellulose membrane flotation-sinking washing and purification device, characterized in that, The cleaning tank includes a bottom heating element. The top of the cleaning tank has an opening. One side of the opening has a floating mechanism with a flipping action. The floating mechanism includes two parallel strip-shaped plates. When the strip-shaped plates are positioned horizontally on both sides of the opening based on the flipping action of the floating mechanism, a cylinder is positioned vertically above the opening between the strip-shaped plates. The bottom of the cylinder has a cylinder rod that telescopically cooperates with it. The bottom of the cylinder rod has a pressure frame. The cleaning tank has a mesh frame adapted to its cross-section. The mesh frame has a frame opening at the bottom.

2. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 1, characterized in that, The upper part of the cleaning tank is provided with an inlet pipe that passes through it, the lower part of the cleaning tank is provided with an outlet pipe that passes through it, and the bottom of the cleaning tank is provided with a recessed installation groove, in which an electric heating rod is installed.

3. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 1, characterized in that, The cleaning tank has a boss near the bottom of the tank. The boss is arranged on four sides around the tank wall. The boss is located above the mounting groove. A mesh plate is installed on the bottom surface of the boss. The edge of the mesh plate is fixed to a rectangular frame. Multiple screws pass through the frame and the frame is fixed to the boss by screws.

4. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 3, characterized in that, Four smooth rods are fixed to the top surface of the boss. A rectangular frame is fixed at the frame opening. The inner side of the frame is chamfered. The corner of the frame is provided with a sliding sleeve that passes through it. The smooth rods pass through the sliding sleeves and the two slide together vertically.

5. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 1, characterized in that, The groove has an outwardly extending edge plate on its periphery, and a mounting bracket is provided on one side of the edge plate. The mounting bracket has strip-shaped holes on both sides, and the length direction of the strip-shaped holes is perpendicular to the side of the edge plate it is close to. The floating mechanism includes a base, and the two ends of the base are respectively provided with through holes that pass through it vertically. Double-ended bolts for passing through the strip-shaped holes are provided in the through holes.

6. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 1, characterized in that, The floating and sinking mechanism includes a base installed on one side opposite the slot, a bearing seat fixed on the base, and a seat body extending vertically upward for 20cm-50cm. A shaft is passed through the seat body, and the two ends of the shaft are perpendicularly connected to one end of the strip plate frame on the same side.

7. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 6, characterized in that, The strip plate frame has a vertical plate at one end away from the shaft, and a folded plate is provided on the bottom side of the vertical plate. The folded plate has a right-angle bending structure in the middle. When the strip plate frame is parallel to the slot, the vertical plate extends vertically, and the inside corner of the folded plate is in contact with the outer side of the plate.

8. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 6, characterized in that, The top of the base has a horizontally penetrating circular mounting port. A cut is provided on one side of the mounting port, and a hoop plate extending outward is provided at the cut position. Fastening bolts are passed through the upper and lower corresponding hoop plates, and the mounting port and the shaft are locked together by nuts.

9. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 7, characterized in that, A groove seat is provided in the center between the two upright plates. Horizontally extending mounting rods are fixed on both sides of the groove seat. The outer ends of the mounting rods are fixed to the upright plates, and the cylinder body is fixed inside the groove seat.

10. The bacterial cellulose membrane flotation-sinking cleaning and purification device according to claim 7, characterized in that, The shaft is rotatably connected to the top of the base, or the strip plate frame is rotatably connected to both ends of the shaft. A threaded sleeve is provided through the folding plate, and a screw is threaded into the internal thread of the threaded sleeve. A handle is provided at the outer end of the screw. When the bottom surface of the folding plate rests on the edge plate, the top circumferential surface of the screw is close to or in contact with the bottom surface of the edge plate.

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