Multi-axis crossed disc ceramic membrane filtering device

Abstract

The multi-axis crossed disc ceramic membrane filtering device comprises a pressure container, a plurality of filtering structures arranged in the pressure container, and a driving device for driving the filtering structures to rotate in the pressure container, the filtering structure comprises a shaft body and a plurality of disc ceramic membranes arranged along the shaft body; a filtering gap is formed between the adjacent disc ceramic membranes arranged along the shaft body, and the disc ceramic membranes of the adjacent filtering structures extend into the filtering gap. According to the utility model, a plurality of disc ceramic membrane assemblies which are arranged in a crossed manner are arranged in the pressure vessel, so that higher filtering efficiency in a limited space is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of filtration and purification, especially relates to a multi-shaft cross disc ceramic membrane filter device. BACKGROUND

[0002] Disc ceramic membrane cross-flow filtration is a highly efficient solid-liquid separation technology. In this system, ceramic membranes are usually made into disc shape and installed in a pressure vessel in a multi-layer stacked manner. The material is sent into the pressure vessel by the action of the pump, where the material flows along the membrane surface in a tangential direction (i.e. cross-flow), rather than perpendicular to the membrane surface. This tangential flow helps to reduce the formation of filter cake, thereby maintaining a high flux and a long operating period.

[0003] The tangential flow rate between the material and the membrane surface is crucial to the filtration effect. When the material flows along the membrane surface at a sufficiently high speed, it can effectively carry away the trapped particulate matter, preventing them from accumulating on the membrane surface to form filter cake. This not only maintains a high flux of the membrane, but also slows down the rate of membrane pollution, prolonging the cleaning cycle and the service life of the membrane. In addition, a suitable tangential flow rate can optimize the mass transfer process, ensuring that the small particles or solute molecules in the liquid uniformly contact the membrane pores, improving the separation efficiency.

[0004] In order to achieve the ideal filtration effect, it is necessary to ensure that the material has a sufficient tangential flow rate relative to the membrane surface. However, in actual operation, due to limitations of equipment design, pumping system or changes in process conditions, it is often difficult to achieve the theoretically optimal flow rate. This may lead to increased deposition of pollutants on the membrane surface, affecting filtration performance and flux. In order to improve the processing capacity, multiple sets of disc ceramic membranes are often arranged in the same pressure vessel. However, this does not increase the relative tangential flow rate of the material, while significantly increasing the volume of the pressure vessel, increasing the manufacturing cost and floor area, and possibly causing uneven fluid distribution problems, further reducing the overall filtration efficiency. In addition, large-scale also brings additional safety hazards and technical challenges, such as higher requirements for sealing and structural strength. SUMMARY

[0005] The utility model aims at providing a multi-shaft cross disc ceramic membrane filter device to solve the technical problem of increasing the tangential flow rate while reducing the expansion of the pressure vessel volume.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of the multi-shaft cross disc ceramic membrane filter device of the utility model is as follows:

[0007] A multi-shaft cross disc ceramic membrane filter device includes a pressure vessel, a plurality of filter structures arranged in the pressure vessel, and a driving device for driving the filter structures to rotate in the pressure vessel.

[0008] The filter structure comprises a shaft body and a plurality of disc ceramic membranes arranged along the shaft body; a filter gap is formed between adjacent disc ceramic membranes along the shaft body, and the filter gap is used for the disc ceramic membranes of adjacent filter structures to extend into.

[0009] As a further improvement of the utility model, the shaft body is internally hollowed to arrange a liquid discharge channel, filtrate filtered by the disc ceramic membrane enters the liquid discharge channel, one end of the shaft body penetrates the lateral wall of the pressure container to extend out of the pressure container, the liquid discharge channel is opened at the extending end of the shaft body to form a liquid discharge port, and the liquid discharge port discharges the filtrate out of the pressure container.

[0010] As a further improvement of the utility model, the filter structure further comprises a connector, the connector and the disc ceramic membrane are sequentially sleeved on the shaft body, opposite protruding connecting portions are arranged on the two sides of the connector, the annular disc ceramic membrane is sleeved on the connecting portions, and the connector clamps the disc ceramic membrane along the shaft body from the two sides of the disc ceramic membrane.

[0011] As a further improvement of the utility model, the disc ceramic membrane is internally provided with a filter groove, and a ceramic membrane covers the filter groove; a liquid discharge hole in communication with the liquid discharge channel is radially arranged on the surface of the shaft body; the connecting portion is provided with a connecting groove connecting the liquid discharge hole and the filter groove; and the filtrate entering the filter groove through the ceramic membrane enters the liquid discharge channel through the liquid discharge hole.

[0012] As a further improvement of the utility model, the lateral wall of the pressure container is provided with a dynamic seal for the shaft body to penetrate, so as to ensure the sealing performance of the pressure container.

[0013] As a further improvement of the utility model, all the filter structures are synchronously driven by the driving device.

[0014] As a further improvement of the utility model, the driving device comprises a driving motor, a driving wheel arranged on the output shaft of the driving motor, a driven wheel arranged at the extending end of the shaft body out of the pressure container, and a belt connecting the driving wheel and the driven wheel; and the driving motor drives the shaft body to drive the disc ceramic membrane to rotate.

[0015] As a further improvement of the utility model, the belt is provided with a tensioning wheel relative to the outer side of the driven wheel, and the tension of the belt is adjusted by adjusting the contact degree of the tensioning wheel and the belt.

[0016] As a further improvement of the utility model, the filter structure is two, and the disc ceramic membranes of the two filter structures sequentially extend into the filter gaps of each other.

[0017] As a further improvement of the utility model, the pressure container is provided with an inlet and an outlet for the filtered material to enter and exit the pressure container, and the inlet and the outlet are quick connector structures.

[0018] Advantages:

[0019] The cross arrangement of the disc ceramic membranes increases the path length and complexity of the material flowing through the membrane surface, providing more opportunities for particles in the material to be trapped, thereby improving the filtration efficiency. The cross-arranged disc ceramic membranes can guide the material to form a more complex flow pattern, including tangential flow, which helps to maintain a high tangential flow rate, reduce the risk of filter cake formation, and maintain a high flux.

[0020] By allowing the disc ceramic membranes of multiple filtration units to extend into each other's filtration gaps, this design can maximize the use of limited space, avoid the problem of expanding the volume of the pressure container due to the increase in the number of discs, and reduce the overall size and cost of the equipment.

[0021] The cross arrangement of the disc ceramic membranes helps to improve the distribution of fluid within the pressure container, ensuring uniform flow distribution for each membrane, thereby improving the filtration consistency and stability of the entire system.

[0022] Without significantly increasing the volume of the pressure container, by cross-arranging more disc ceramic membranes, the total filtration area can be effectively increased, thereby improving the material processing capacity per unit time.

[0023] Cross arrangement allows adjustment of parameters such as the number, angle, and spacing of discs according to actual needs to meet special requirements in specific application scenarios, such as different feed concentrations, viscosities, or temperature conditions.

[0024] In summary, the utility model provides a multi-axis cross disc ceramic membrane filtration device that is efficient, compact, and easy to maintain, which solves the problems of insufficient relative tangential flow rate of material and excessive volume of pressure container in traditional filtration equipment, providing a better choice for solid-liquid separation processes in industrial applications. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A multi-axis cross disc ceramic membrane filtration device structure schematic diagram of the utility model;

[0026] Figure 2 A filtration structure schematic diagram;

[0027] Figure 3 A disc ceramic membrane and connector structure schematic diagram;

[0028] Marked description in figure: 1, pressure vessel; 11, dynamic seal; 12, feed inlet; 13, discharge outlet; 2, filter structure; 21, disc ceramic membrane; 211, filter groove; 22, shaft body; 221, drainage channel; 222, drainage hole; 23, filter gap; 24, connector; 241, connecting part; 242, connecting groove; 243, gasket; 31, driving motor; 32, driving wheel; 33, driven wheel; 34, belt; 35, tension pulley. DETAILED DESCRIPTION

[0029] In order to deepen the understanding of the utility model, the utility model will be further described in the following in conjunction with examples and drawings, and the examples are only used to explain the utility model and do not constitute the limitation on the protection scope of the utility model.

[0030] Implementation example:

[0031] As Figure 1 shown in a kind of multi-shaft cross disc ceramic membrane filter device, including pressure vessel 1, filter structure 2 and driving device.Filter structure 2 includes the shaft body 22 connected with driving device, disc ceramic membrane 21 is set on shaft body 22, driving device drives shaft body 22 rotation drives disc ceramic membrane 21 to rotate, to be filtered material flows tangentially on ceramic membrane surface, particulate is intercepted by ceramic membrane and makes filtrate to pass through.This embodiment is with 2 groups of filter structure 2 being set in pressure vessel 1 as an example, and disc ceramic membrane 21 of same group is clamped and installed by connector 24, and there is filter gap 23 formed with the width of connector 24, and disc ceramic membrane 21 of adjacent group mutually extends into the filter gap 23 of the other party, in the case where disc rotates, relative to the rotation of single group of disc ceramic membrane 21, material forms higher tangential flow velocity relative to membrane surface and more contact area.

[0032] As Figure 2 shown, shaft body 22 is hollow tubular with one end closed and one end open, and the open end extends from pressure vessel 1, and the hollow interior of shaft body 22 is drainage channel 221, and the surface of shaft body is provided with drainage hole 222 in communication with drainage channel 221 in radial direction.The surface of shaft body 22 is sequentially and spacedly provided with disc ceramic membrane 21 and connector 24, and the two are locked on shaft body 22 by cooperating nut through the external thread section on the surface of shaft body 22.As Figure 3As shown, the ring-shaped connector 24 protrudes outward on both sides to form a connecting portion 241, the ring-shaped disc ceramic membrane 21 is sleeved on the connecting portion 241, a ring-shaped sealing gasket 243 is arranged on the periphery of the connecting portion 241 and faces the disc ceramic membrane 21, a filter groove 211 is arranged in the disc ceramic membrane 21, the filter groove 211 covers the ceramic membrane on both sides, the connecting portion 241 is provided with a connecting groove 242 connecting the filter groove 211 and the liquid discharge hole 222, the filtrate passing through the ceramic membrane enters the liquid discharge channel 221 in sequence through the filter groove 211, the connecting groove 242 and the liquid discharge hole 222, and is finally discharged through the liquid discharge port formed at the open end of the shaft body, the liquid discharge port is controlled to be opened and closed through the valve, and the liquid inlet structure can also be connected, so that the disc ceramic membrane 21 can be back-flushed when necessary.

[0033] The driving motor 31 of the driving device in the embodiment is a speed reduction motor, a driving wheel 32 arranged on the motor output shaft is driven to rotate by the motor, a driven wheel 33 is arranged at the extension end of the shaft body, and the driving wheel 32 and the driven wheel 33 connected through the belt 34 rotate under the driving of the motor to drive the synchronous rotation of the shaft body 22. Meanwhile, a tension wheel 35 is arranged outside the belt 34, and the tightness of the belt 34 is adjusted by adjusting the tension wheel 35 to press the belt. The pressure container 1 is respectively provided with an inlet 12 and an outlet 13 on both sides, the material to be filtered enters the pressure container 1 through the inlet 12, and is discharged through the outlet 13 after being filtered. The quick connector design of the inlet 12 and the outlet 13 facilitates disassembly and assembly, and greatly simplifies the daily maintenance work. The dynamic seal 11 is arranged at the position where the shaft body 22 penetrates out of the pressure container 1, which effectively guarantees the sealing performance of the whole system, prevents foreign matters from invading from outside and prevents the internal material from leaking, and improves the safety and reliability of operation.

[0034] Compared with the single-shaft or non-crossing multi-shaft disc ceramic membrane system, the multi-shaft crossing disc ceramic membrane filter device of the utility model improves the cross-section flow rate by more than 1.5 times, and greatly improves the filtering efficiency under the condition of equal power consumption. Meanwhile, due to the mutual crossing of the discs, the overall volume is also reduced, and the equipment floor area and construction cost are reduced. By allowing two or more disc ceramic membranes of the filtering structure to extend into the filtering gap of each other, not only the space utilization is optimized, but also the problem of the expansion of the pressure container volume caused by the increase of the number of discs is avoided. This not only reduces the manufacturing cost, but also reduces the equipment floor area and improves the installation flexibility. Due to the design that the driving device synchronously drives multiple filtering structures, all the disc ceramic membranes can rotate synchronously in the pressure container. This dynamic operation mode ensures that the material maintains a high cross-section flow rate relative to the membrane surface, thereby effectively preventing the formation of filter cake and improving the filtering efficiency and flux.

[0035] It can be understood that the utility model is described through some embodiments, and the person skilled in the art knows that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the application belong to the scope protected by the utility model.

Claims

1. A multi-axial cross-disk ceramic membrane filtration device, characterized by, The application relates to a filter device, which comprises a pressure container, a plurality of filter structures arranged in the pressure container, and a driving device for driving the filter structures to rotate in the pressure container. The filter structure comprises a shaft body and a plurality of disc ceramic membranes arranged along the shaft body; filter gaps are formed between adjacent disc ceramic membranes along the shaft body, and the disc ceramic membranes of adjacent filter structures extend into the filter gaps.

2. The multi-axial cross-disk ceramic membrane filtration device according to claim 1, wherein, A liquid discharge channel is arranged in the hollow shaft body; filtrate filtered by the disc ceramic membranes enters the liquid discharge channel; one end of the shaft body penetrates through the side wall of the pressure container and extends out of the pressure container; the liquid discharge channel is open at the extending end of the shaft body to form a liquid discharge port; and the liquid discharge port discharges the filtrate out of the pressure container.

3. The multi-axial cross-disk ceramic membrane filtration device of claim 2, wherein, The filter structure further comprises a connector, which is sequentially sleeved on the shaft body with the disc ceramic membranes; opposite protruding connecting portions are arranged on the two sides of the connector; the inner side of the annular disc ceramic membrane is sleeved on the connecting portions; and the connector clamps the disc ceramic membranes along the shaft body from the two sides of the disc ceramic membranes.

4. The multi-axial intersecting disc ceramic membrane filtration device of claim 3, wherein, The disc ceramic membrane is internally provided with a filter groove covered by a ceramic membrane; a liquid discharge hole communicating with the liquid discharge channel is radially arranged on the surface of the shaft body; the connecting portion is provided with a connecting groove connecting the liquid discharge hole and the filter groove; and the filtrate entering the filter groove through the ceramic membrane enters the liquid discharge channel through the liquid discharge hole.

5. The multi-axial intersecting disc ceramic membrane filtration device of claim 2, wherein, The side wall of the pressure container is provided with a dynamic seal for the shaft body to penetrate through, so as to ensure the sealing property of the pressure container.

6. The multi-axial intersecting disc ceramic membrane filtration device of claim 1, wherein, All the filter structures are synchronously driven by the driving device.

7. The multi-axial intersecting disc ceramic membrane filtration device of claim 2, wherein, The driving device comprises a driving motor, a driving wheel arranged on the output shaft of the driving motor, a driven wheel arranged at the extending end of the shaft body out of the pressure container, and a belt connecting the driving wheel and the driven wheel; the driving motor drives the shaft body to rotate the disc ceramic membranes.

8. The multi-axial intersecting disc ceramic membrane filtration device of claim 7, wherein, The belt is provided with a tensioning wheel relative to the outer side of the driven wheel; the contact degree of the tensioning wheel with the belt is adjusted to adjust the tension of the belt.

9. The multi-axial intersecting disc ceramic membrane filtration device of claim 1, wherein, The filter structures are two; the disc ceramic membranes of the two filter structures sequentially extend into the filter gaps of each other.

10. The multi-axial intersecting disc ceramic membrane filtration device of claim 1, wherein, The pressure container is provided with a feeding port and a discharging port for feeding and discharging materials to be filtered into and out of the pressure container; and the feeding port and the discharging port are quick connector structures.

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