Horizontal rotary ceramic membrane equipment

Abstract

The utility model discloses horizontal rotary ceramic membrane equipment which comprises a horizontal rotary ceramic membrane unit, a material conveying unit, a water producing unit, a backwashing water replenishing unit and a control unit. The device effectively solves the problems of low water production efficiency, high backwashing frequency, high energy consumption and the like in the prior art, shows remarkable technical advantages and economic benefits in the aspects of improving the filtering performance, reducing the operation cost, simplifying the technological process and the like, and is suitable for separation of biological fermentation liquor and concentration and separation processes of similar high-difficulty materials.

Description

Technical Field

[0001] This utility model specifically relates to a horizontal rotating ceramic membrane device. Background Technology

[0002] In the production of bio-fermentation broth, traditional separation technologies mainly rely on equipment such as plate and frame filters, vacuum drum separators, and centrifuges, or methods such as flocculation sedimentation, heating, and isoelectric point precipitation to coarsely separate mycelia and solid impurities in the fermentation broth. However, these methods have significant limitations in practical applications. Due to their limited separation precision, they are unable to effectively remove soluble bacteria, extraneous proteins, organic antibodies, and inorganic ions, resulting in a significant amount of residual impurities in the semi-finished or finished liquid. These impurities not only increase the difficulty of subsequent extraction and ion exchange processes, reducing separation efficiency and product quality, but may even cause feed contamination, leading to product spoilage.

[0003] Rotary ceramic membrane separation technology, as an advanced filtration and separation method, has been widely used in the purification and refining of fermentation broths in recent years. This technology combines the advantages of centrifugal separation and membrane filtration. High-speed rotating membrane components generate high shear forces and swirling currents on the membrane surface, effectively removing the filter cake layer and maintaining a high filtration flux. Compared to traditional tubular ceramic membranes, rotary ceramic membranes do not rely on high-flow-rate circulating pumps to flush the membrane surface to prevent fouling; instead, they achieve anti-fouling functionality through the rotation of the membrane itself. This characteristic makes them particularly suitable for the concentration and separation of high-concentration, high-viscosity, and high-solids-content materials, while also possessing nanometer-level filtration precision, stable filtration performance, and energy-saving effects. However, existing rotary ceramic membrane equipment still has the following technical shortcomings in practical applications:

[0004] 1. Decreased permeate efficiency: As dialysate is continuously drawn out, the concentration of the feed solution within the rotating disc ceramic membrane unit gradually increases, leading to an increase in osmotic pressure on the membrane surface and a significant decrease in permeate flux. To maintain permeate flow, a multi-stage permeate process is typically required, with the permeate suction pressure gradually increased. This not only places higher demands on the strength of the equipment materials but also significantly increases operating energy consumption.

[0005] 2. Frequent cake buildup and backwashing: A cake layer easily forms on the surface of the rotating disc ceramic membrane due to the accumulation of solid particles, leading to a decrease in filtration flux. Frequent backwashing is required to restore membrane performance, which not only reduces production efficiency but also increases equipment maintenance costs.

[0006] To address the aforementioned issues, existing technologies urgently require an improvement scheme to enhance the water production efficiency of rotating ceramic membrane equipment, reduce energy consumption, and decrease backwashing frequency, thereby optimizing the overall performance of the fermentation broth separation process. Utility Model Content

[0007] The purpose of this invention is to provide a horizontal rotating ceramic membrane device.

[0008] The technical solution of this utility model is as follows:

[0009] A horizontal rotating ceramic membrane device includes a horizontal rotating ceramic membrane unit, a material conveying unit, a water production unit, a backwash and water replenishment unit, and a control unit.

[0010] A horizontal rotating ceramic membrane unit includes a membrane unit cavity, a rotary joint, a reducer, a rotary drive motor, a rotating hollow shaft, and several rotating disc ceramic membranes. The lower part of the side wall of the membrane unit cavity has a feed inlet, and the bottom has a concentrate discharge outlet. The rotating hollow shaft is horizontally positioned within the membrane unit cavity, with several rotating disc ceramic membranes mounted parallel to it in a sealed manner. The inner cavity of the rotating hollow shaft communicates with the internal flow channels of the several rotating disc ceramic membranes. The rotary joint is installed at one end of the rotating hollow shaft to connect to its inner cavity. The reducer is mounted on one side of the membrane unit cavity via several support rods, and the rotary drive motor drives the upper part of the rotating hollow shaft through the reducer.

[0011] The material conveying unit includes a material tank, a material pump, a material check valve, and a material electric ball valve. The material tank is connected to the inlet of the membrane unit cavity in sequence through the material pump, the material check valve, and the material electric ball valve.

[0012] The water production unit includes a water production storage tank, a water production electric ball valve, a suction pump, and a water production check valve. The rotary joint is connected to the water production storage tank in sequence through the water production electric ball valve, the suction pump, and the water production check valve.

[0013] The backwash water replenishment unit includes an RO reverse osmosis water storage tank, a backwash water replenishment pump, a backwash water replenishment check valve, a water replenishment electric ball valve, a backwash electric ball valve, and a spray assembly disposed in the cavity of the membrane unit. The RO reverse osmosis water storage tank is connected to the spray assembly in sequence through the backwash water replenishment pump, the backwash water replenishment check valve, and the water replenishment electric ball valve, and is connected to the inner cavity of the rotating hollow shaft in sequence through the backwash water replenishment pump, the backwash water replenishment check valve, the backwash electric ball valve, and the rotary joint.

[0014] The control unit is electrically connected to the aforementioned rotary drive motor, feed pump, feed electric ball valve, product water electric ball valve, suction pump, backwash water pump, water replenishment electric ball valve, and backwash electric ball valve.

[0015] In a preferred embodiment of the present invention, a first support shaft and a second support shaft are further included. The first support shaft is disposed at one end of the side wall of the membrane unit cavity, and the second support shaft is disposed at the other end of the side wall of the membrane unit cavity. A part of the rotating hollow shaft is mounted on the first support shaft and the other part is mounted on the second support shaft to reduce the swing of the rotating hollow shaft.

[0016] In a preferred embodiment of the present invention, an intermediate sealing element is provided between adjacent rotating disc ceramic films, and an end sealing element is provided at each of the two ends of the rotating disc ceramic films.

[0017] In a preferred embodiment of this utility model, the concentrate discharge port of the membrane unit cavity is provided with a manual concentrate discharge valve.

[0018] In a preferred embodiment of the present invention, an overflow port is provided on the upper side wall of the membrane unit cavity, and the overflow port is provided with a manual overflow valve.

[0019] In a preferred embodiment of this utility model, the feed inlet of the membrane unit cavity is provided with a manual drain valve.

[0020] In a preferred embodiment of the present invention, the spray assembly includes a main spray pipe and a plurality of spray branch pipes equally spaced on the main spray pipe, each spray branch pipe corresponding to the gap between two adjacent rotating disc ceramic membranes.

[0021] The beneficial effects of this utility model are:

[0022] 1. By spraying RO reverse osmosis water, this invention enhances the shear force on the surface of the rotating disc ceramic membrane, and combined with the swirling sweeping effect generated by the rotation, strengthens the flushing effect on the filter cake on the membrane surface. This enhanced cleaning mechanism effectively slows down the membrane fouling rate, allowing the membrane flux to be maintained for a longer period of time, thereby significantly extending the single water production cycle and reducing the frequency of backwashing operations. Compared with the prior art, this invention improves the continuous operation capability of the equipment and increases production efficiency.

[0023] 2. Spraying RO reverse osmosis water dilutes the high-concentration feed solution within the rotating disc ceramic membrane unit, reducing the osmotic pressure on the membrane surface and thus decreasing the suction pressure required for permeate production. Unlike existing technologies that require gradually increasing suction pressure through multiple stages of permeate production, this invention achieves a stable increase in permeate volume without complex multi-stage design. This improvement not only simplifies the equipment structure and process flow but also reduces energy consumption during operation, offering significant energy-saving advantages.

[0024] 3. Based on existing rotating ceramic membrane equipment, this utility model achieves efficient cleaning of the membrane surface and effective control of the concentrate concentration simply by adding a main spray pipe and related components. The improved equipment has a simple structural design, is easy to manufacture, install and maintain, has low implementation costs, and has good economic benefits and application value. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0026] The technical solution of this utility model will be further explained and described below with reference to specific embodiments and accompanying drawings.

[0027] like Figure 1 As shown, a horizontal rotating ceramic membrane device includes a horizontal rotating ceramic membrane unit 1, a material conveying unit 2, a water production unit 3, a backwash and water replenishment unit 4, and a control unit (not shown in the figure).

[0028] The horizontal rotating ceramic membrane unit 1 includes a membrane unit cavity 10, a rotary joint 11, a reducer 12, a rotary drive motor 13, a rotating hollow shaft 14, and several rotating disc ceramic membranes 15.

[0029] An overflow port 102 is provided on the upper part of the side wall of the membrane unit cavity 10, an inlet port 103 is provided on the lower part of the side wall, and a concentrate discharge port 104 is provided at the bottom. The overflow port 102 is equipped with a manual overflow valve 1021 (generally kept open, and automatically overflows if the liquid level in the membrane unit cavity 10 reaches this level). The inlet port 103 is equipped with a manual drain valve 1031, and the concentrate discharge port 104 is equipped with a manual concentrate discharge valve 1041.

[0030] A rotating hollow shaft 14 is horizontally disposed within the membrane unit cavity 10, with several rotating disc ceramic membranes 15 mounted parallel to it in a sealing manner. The inner cavity of the rotating hollow shaft 14 is connected to the internal flow channels of the rotating disc ceramic membranes 15. An intermediate seal 151 is provided between adjacent rotating disc ceramic membranes 15, and an end seal 152 is provided at each of the two outermost rotating disc ceramic membranes 15. A rotary joint 11 is installed at one end of the rotating hollow shaft 14 to connect to the inner cavity of the rotating hollow shaft 14. The system also includes a first support shaft 16 and a second support shaft 17. The first support shaft 16 is located at one end of the side wall of the membrane unit cavity 10, and the second support shaft 17 is located at the other end of the side wall of the membrane unit cavity 10. A portion of the rotating hollow shaft 14 is mounted on the first support shaft 16, and the other portion is mounted on the second support shaft 17 to reduce the swing of the rotating hollow shaft 14.

[0031] The reducer 12 is located on one side of the membrane unit cavity 10 via several support rods 121, and the rotary drive motor 13 drives the upper part of the rotary hollow shaft 14 connected to the reducer 12.

[0032] The material conveying unit 2 includes a material tank 20, a material pump 23, a material check valve 21 and a material electric ball valve 22. The material tank 20 is connected to the inlet 103 of the membrane unit cavity 10 in sequence through the material pump 23, the material check valve 21 and the material electric ball valve 22.

[0033] The water production unit 3 includes a water production storage tank 30, a water production electric ball valve 31, a suction pump 32 and a water production check valve 33. The rotary joint 11 is connected to the water production storage tank 30 in sequence through the water production electric ball valve 31, the suction pump 32 and the water production check valve 33.

[0034] The backwash water replenishment unit 4 includes an RO reverse osmosis water storage tank 40, a backwash water replenishment pump 41, a backwash water replenishment check valve 45, a water replenishment electric ball valve 42, a backwash electric ball valve 43, and a spray assembly 44 disposed in the membrane unit cavity 10. The RO reverse osmosis water storage tank 40 is connected to the spray assembly 44 in sequence through the backwash water replenishment pump 41, the backwash water replenishment check valve 45, and the water replenishment electric ball valve 42, and is connected to the inner cavity of the rotating hollow shaft 14 in sequence through the backwash water replenishment pump 41, the backwash water replenishment check valve 45, the backwash electric ball valve 43, and the rotary joint 11. The spray assembly 44 includes a spray main pipe 441 and a plurality of spray branch pipes 442 equally spaced on the spray main pipe 441. Each spray branch pipe 442 corresponds to the gap between two adjacent rotating disc ceramic membranes 15.

[0035] The control unit is electrically connected to the aforementioned rotary drive motor 13, feed pump 23, feed electric ball valve 22, product water electric ball valve 31, suction pump 32, backwash water pump 41, water replenishment electric ball valve 42, and backwash electric ball valve 43.

[0036] The working process of this utility model is as follows:

[0037] During normal filtration and water production, the control unit activates the rotary drive motor 13, feed pump 23, feed electric ball valve 22, suction pump 32, product water electric ball valve 31, backwash water pump 41, and water replenishment electric ball valve 42, while closing the backwash electric ball valve 43. This ensures normal water production during equipment operation. The rotating membrane generates a cross-flow effect, creating shear force on the membrane surface. Some liquid enters the internal flow channel of the membrane through the membrane pores, becoming product water. The product water passes through the inner cavity of the rotating hollow shaft 14 and is drawn into the product water storage tank 30 by the suction pump 32 via the rotary joint 11. Simultaneously, the RO reverse osmosis water used for replenishment washes the gaps of the rotating disc ceramic membrane 15, enhancing the shear force on the membrane surface, flushing the filter cake, mitigating membrane fouling, and extending the water production time.

[0038] During backwashing, the backwash water pump 41 and the backwash electric ball valve 43 are turned on by the control unit, while the rotary drive motor 13, the feed pump 23, the feed electric ball valve 22, the suction pump 32, the product water electric ball valve 31, the backwash water pump 41 and the water replenishment electric ball valve 42 are turned off to perform backwashing. This allows the RO reverse osmosis water used for backwashing to flow out from the surface pores of the rotating disc ceramic membrane 15, cleaning the contaminants on the membrane surface, restoring the membrane's filtration performance, and achieving the backwashing effect.

[0039] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A horizontal rotating ceramic membrane device, characterized in that: It includes a horizontal rotating ceramic membrane unit, a material conveying unit, a water production unit, a backwash and water replenishment unit, and a control unit. A horizontal rotating ceramic membrane unit includes a membrane unit cavity, a rotary joint, a reducer, a rotary drive motor, a rotating hollow shaft, and several rotating disc ceramic membranes. The lower part of the side wall of the membrane unit cavity has a feed inlet, and the bottom has a concentrate discharge outlet. The rotating hollow shaft is horizontally positioned within the membrane unit cavity, with several rotating disc ceramic membranes mounted parallel to it in a sealed manner. The inner cavity of the rotating hollow shaft communicates with the internal flow channels of the several rotating disc ceramic membranes. The rotary joint is installed at one end of the rotating hollow shaft to connect to its inner cavity. The reducer is mounted on one side of the membrane unit cavity via several support rods, and the rotary drive motor drives the upper part of the rotating hollow shaft through the reducer. The material conveying unit includes a material tank, a material pump, a material check valve, and a material electric ball valve. The material tank is connected to the inlet of the membrane unit cavity in sequence through the material pump, the material check valve, and the material electric ball valve. The water production unit includes a water production storage tank, a water production electric ball valve, a suction pump and a water production check valve. The rotary joint is connected to the water production storage tank in sequence through the water production electric ball valve, the suction pump and the water production check valve. The backwash water replenishment unit includes an RO reverse osmosis water storage tank, a backwash water replenishment pump, a backwash water replenishment check valve, a water replenishment electric ball valve, a backwash electric ball valve, and a spray assembly disposed in the cavity of the membrane unit. The RO reverse osmosis water storage tank is connected to the spray assembly in sequence through the backwash water replenishment pump, the backwash water replenishment check valve, and the water replenishment electric ball valve, and is connected to the inner cavity of the rotating hollow shaft in sequence through the backwash water replenishment pump, the backwash water replenishment check valve, the backwash electric ball valve, and the rotary joint. The control unit is electrically connected to the aforementioned rotary drive motor, feed pump, feed electric ball valve, product water electric ball valve, suction pump, backwash water pump, water replenishment electric ball valve, and backwash electric ball valve.

2. The horizontal rotating ceramic membrane device as described in claim 1, characterized in that: It also includes a first support shaft and a second support shaft. The first support shaft is located at one end of the side wall of the membrane unit cavity, and the second support shaft is located at the other end of the side wall of the membrane unit cavity. One part of the rotating hollow shaft is mounted on the first support shaft, and the other part is mounted on the second support shaft to reduce the swing of the rotating hollow shaft.

3. The horizontal rotating ceramic membrane device as described in claim 1, characterized in that: An intermediate seal is provided between adjacent rotating disc ceramic membranes, and an end seal is provided at each of the two ends of the rotating disc ceramic membranes.

4. The horizontal rotating ceramic membrane device as described in claim 1, characterized in that: The membrane unit cavity is equipped with a manual concentrate discharge valve at the concentrate discharge port.

5. The horizontal rotating ceramic membrane device as described in claim 1, characterized in that: An overflow port is provided on the upper side wall of the membrane unit cavity, and the overflow port is equipped with a manual overflow valve.

6. The horizontal rotating ceramic membrane device as described in claim 1, characterized in that: The feed inlet of the membrane unit cavity is equipped with a manual drain valve.

7. A horizontal rotating ceramic membrane device as described in any one of claims 1 to 6, characterized in that: The spray assembly includes a main spray pipe and a plurality of spray branch pipes equally spaced on the main spray pipe, each spray branch pipe corresponding to the gap between two adjacent rotating disc ceramic membranes.

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