Filtration system

Abstract

The utility model provides a filtering system and relates to the technical field of filtering. The filtering system comprises a filtering machine, a steam assembly, a liquid storage tank and a liquid conveying pipeline, the filtering machine is provided with a first inlet and an outlet, the first inlet is used for feeding materials, and the filtering machine is used for solid-liquid separation; one end of the liquid conveying pipeline is communicated with the outlet, and the other end of the liquid conveying pipeline is communicated with the liquid storage tank; the steam assembly is communicated with the liquid conveying pipeline and used for conveying steam to the liquid conveying pipeline so as to dissolve crystals in the liquid conveying pipeline. By adopting the steam blowing mode, the use of the solvent and the number of times of solvent washing operation are reduced, the solvent washing period is prolonged, the production cost and the maintenance cost are reduced, and the production efficiency is improved. Even if part of crystals exist in the liquid conveying pipeline or the liquid conveying pipeline is blocked, the crystals can be promoted to be dissolved in mother liquor through high-temperature and pressure purging of steam, or the crystals are loosened and enter the liquid storage tank along with the mother liquor, cleaning and dredging are carried out in a short time, and the timeliness of cleaning is improved.

Description

Technical Field

[0001] This utility model generally relates to the field of filtration technology, and more specifically, to a filtration system. Background Technology

[0002] The existing filtration system collects mother liquor, which is then transported to a mother liquor storage tank via pipelines. Under operating temperatures, crystals precipitate from the mother liquor and adhere to the inner walls of the pipelines. To ensure unobstructed pipeline flow, the filter needs to stop feeding every so often and the pipelines need to be cleaned or chemically cleaned, sometimes even requiring disassembly for mechanical cleaning. This approach increases the difficulty of equipment operation and maintenance, severely impacting production efficiency. Utility Model Content

[0003] This invention provides a filtration system that reduces production costs and improves production efficiency.

[0004] According to a first aspect of the present invention, a filtration system is provided, comprising:

[0005] A filter is provided with a first inlet and an outlet, the first inlet is used to introduce material, and the filter is used for solid-liquid separation;

[0006] The liquid storage tank and the infusion pipeline, wherein one end of the infusion pipeline is connected to the outlet and the other end is connected to the liquid storage tank;

[0007] A steam assembly, connected to the infusion line, is used to supply steam to the infusion line. By supplying steam to the infusion line, the crystals on the inner wall of the infusion line can be dissolved or loosened, and then carried into the storage tank with the mother liquor, thereby achieving the effect of cleaning the infusion line.

[0008] In some embodiments, the steam assembly includes:

[0009] A gas delivery pipeline, one end of which is provided with a steam inlet, and the other end is connected to the liquid delivery pipeline.

[0010] In some embodiments, the steam assembly further includes:

[0011] A first control valve is installed in the gas pipeline and is used to open and close the gas pipeline.

[0012] In some embodiments, the connection between the gas supply line and the liquid supply line is located on the side of the liquid supply line closer to the outlet.

[0013] In some embodiments, an intake assembly is also included, the intake assembly comprising:

[0014] The filter is provided with a second inlet in the air intake pipe, and is connected to the second inlet for introducing compressed gas into the filter.

[0015] In some embodiments, the intake assembly further includes:

[0016] The second control valve is located in the intake pipe and is used to control the opening and closing of the intake pipe.

[0017] In some embodiments, at least one of the first control valve and the second control valve is open.

[0018] In some embodiments, a loop component is also included, the loop component comprising:

[0019] A circulation pipeline, one end of which is connected to the storage tank and the other end of which is connected to the infusion pipeline;

[0020] A circulation pump, connected to the circulation pipeline, allows the mother liquor in the storage tank to be transported to the infusion pipeline through the circulation pipeline for flushing and dissolving crystals in the infusion pipeline.

[0021] In some embodiments, the loop component further includes:

[0022] A replenishment line is connected to the circulation line and is used to introduce solvent into the circulation line.

[0023] In some embodiments, the connection between the circulation line and the infusion line is located on the side of the infusion line closer to the outlet.

[0024] One embodiment of this utility model has the following advantages or beneficial effects:

[0025] The filtration system provided in this embodiment of the invention, when the solute in the mother liquor precipitates again and crystallizes and adsorbs onto the inner wall of the infusion pipeline, delivers steam to the infusion pipeline through a steam assembly. Due to the high temperature of the steam, the simultaneous delivery of steam while the mother liquor flows through the pipeline causes the crystals to dissolve again in the mother liquor, or loosen the crystals so that they enter the storage tank with the mother liquor, reducing the likelihood of blockage in the infusion pipeline. This steam-assisted purging method reduces solvent usage and the number of solvent washing operations, extends the solvent washing cycle, lowers production and maintenance costs, and improves production efficiency. Even if there is partial crystallization or blockage in the infusion pipeline, it can be cleaned and unblocked in a short time through high-temperature, high-pressure steam purging, improving the timeliness of cleaning. Attached Figure Description

[0026] To better understand this invention, reference can be made to the embodiments shown in the following drawings. Components in the drawings are not necessarily to scale, and related elements may be omitted to emphasize and clearly illustrate the technical features of this invention. Furthermore, related elements or components may have different arrangements as known in the art. Additionally, in the drawings, the same reference numerals denote the same or similar components in various figures. The above and other features and advantages of this invention will become more apparent by describing exemplary embodiments of the invention in detail with reference to the drawings.

[0027] in:

[0028] Figure 1 The diagram shown is a structural schematic of the filtration system according to Embodiment 1 of this utility model;

[0029] Figure 2 The diagram shown is a structural schematic of the filtration system according to Embodiment 1 of this utility model;

[0030] Figure 3 The diagram shown is a structural schematic of the filtration system according to Embodiment 2 of this utility model.

[0031] The reference numerals in the attached figures are explained as follows:

[0032] 1. Filter; 2. Storage tank; 3. Infusion pipeline; 4. Steam assembly; 5. Air inlet assembly; 6. Circulation assembly; 7. Washing pipeline;

[0033] 101. First inlet; 102. Outlet; 103. Second inlet; 11. Filter unit; 12. Distributor head; 13. First rotor; 14. Second rotor;

[0034] 41. Gas pipeline; 42. First control valve;

[0035] 51. Intake pipe; 52. Second control valve;

[0036] 61. Circulation pipeline; 62. Circulation pump; 63. Make-up pipeline; 64. Check valve. Detailed Implementation

[0037] The technical solutions of the exemplary embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The exemplary embodiments described herein are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Therefore, it should be understood that various modifications and changes can be made to the exemplary embodiments without departing from the scope of protection of this utility model.

[0038] In the description of this utility model, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more; and the term "and / or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the / described" object or "an" object are also intended to indicate one of a possible plurality of such objects.

[0039] Unless otherwise specified or stated, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Furthermore, in the description of this utility model, it should be understood that the directional terms such as "upper," "lower," "inner," and "outer" described in the exemplary embodiments of this utility model are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the exemplary embodiments of this utility model. It should also be understood that, in the context, when an element or feature is mentioned as being "upper," "lower," "inner," or "outer" of another element (one or more), it can be directly connected to the other element (one or more) "upper," "lower," "inner," or "outer," or it can be indirectly connected to the other element (one or more) "upper," "lower," "inner," or "outer" through an intermediate element.

[0041] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0042] Example 1

[0043] This embodiment provides a filtration system, such as Figures 1-2 As shown, the filtration system includes a filter 1, a storage tank 2, and a delivery pipeline 3. The filter 1 is equipped with a first inlet 101 and an outlet 102. The first inlet 101 is used to introduce material, and the filter 1 is used for solid-liquid separation. After the material is filtered by the filter 1, the mother liquor is discharged through the outlet 102. One end of the delivery pipeline 3 is connected to the outlet 102, and the other end is connected to the storage tank 2. The mother liquor is transported to the storage tank 2 through the delivery pipeline 3, and the storage tank 2 is used to store the mother liquor.

[0044] Among them, filter 1 is a solid-liquid separation device that can be operated continuously.

[0045] When material enters the individual filtration units 11 of the filter 1, a filter cake is formed in the filter chamber. The filtration units 11 are distributed on the outer edge of the rotor and rotate in an airtight, stationary housing. The rotor includes a first rotor 13 and a second rotor 14, wherein the diameter of the first rotor 13 is larger than that of the second rotor 14. The first rotor 13 can also be referred to as the large rotor, and the second rotor 14 can also be referred to as the small rotor. The first rotor 13 is connected to the second rotor 14 through a connecting plate, and the first rotor 13 and the second rotor 14 rotate synchronously under the drive of gears. In the pressureless discharge zone, the filter cake enters the material collection pipe. The mother liquor flows through the pipe from the filtration unit 11 to the distribution head 12, and then is discharged through the outlet 102, thereby separating and discharging the solid and liquid components in the material in different areas.

[0046] When the mother liquor flows into the infusion line 3, it will crystallize upon contact with cold water or the residual cold water on the inner wall of the line 3. The crystals will adhere to the inner wall of the line 3, and as they accumulate, they will cause blockage, affecting the delivery efficiency of the mother liquor. Therefore, the feed to the filter 1 needs to be stopped and the infusion line 3 cleaned approximately every 1.5 to 2 hours, making this a frequent operation. Furthermore, the infusion line 3 must be disassembled before cleaning, complicating the process, increasing operational difficulty, and impacting production efficiency.

[0047] To solve this problem, such as Figures 1-2 As shown, the filtration system provided in this embodiment also includes a steam assembly 4, which is connected to the infusion pipeline 3 and is used to deliver steam to the infusion pipeline 3 to remove crystals in the infusion pipeline 3.

[0048] The filtration system provided in this embodiment, when the solute in the mother liquor redefines and crystallizes, adsorbing onto the inner wall of the infusion pipeline 3, delivers steam to the infusion pipeline 3 via the steam assembly 4. Due to the high temperature of the steam, the steam is delivered to the infusion pipeline 3 simultaneously with the mother liquor, allowing the crystals to dissolve again in the mother liquor or loosen some of the crystals so they enter the storage tank 2 with the mother liquor, reducing the likelihood of blockage in the infusion pipeline 3. This steam purging method reduces solvent usage and the number of solvent washing operations, extending the solvent washing cycle; for example, the solvent washing cycle of the filter 1 is extended to 4 hours per cycle, reducing production and maintenance costs and improving production efficiency. Even if there is partial crystallization or blockage in the infusion pipeline 3, it can be cleaned and unblocked in a short time through high-temperature dissolution and pressure purging by steam, improving the timeliness of cleaning.

[0049] In one embodiment, the steam assembly 4 includes a gas delivery line 41, one end of which is provided with a steam inlet, and the other end is connected to the liquid delivery line 3.

[0050] Because the steam introduced through the steam inlet has a certain temperature, it can promote the redissolution of crystals on the inner wall of the infusion pipeline 3 into the mother liquor within the pipeline 3. As the dissolution area increases, the volume of the crystals may gradually decrease, transforming from large crystals into smaller ones, or some small crystals may dissolve completely into the mother liquor. This avoids crystals adhering to the inner wall of the infusion pipeline 3, which could reduce the effective flow area and cause blockage. Simultaneously, the pressurized steam can push smaller crystals towards the storage tank 2 along with the mother liquor. This reduces blockage in the infusion pipeline 3 and, to some extent, improves the transport efficiency of the mother liquor within the pipeline 3, thereby reducing production costs.

[0051] If the connection between the gas pipeline 41 and the liquid pipeline 3 is in the middle of the liquid pipeline 3 or near the other end, some of the steam will move towards the end closer to the outlet 102, and the other part will move towards the liquid storage tank 2. The flow direction of some of the steam is opposite to the direction of the mother liquor transportation, which hinders the transportation of the mother liquor and affects the transportation efficiency of the mother liquor.

[0052] To solve this problem, such as Figures 1-2 As shown, the connection between the gas delivery line 41 and the liquid delivery line 3 is located on the side of the liquid delivery line 3 closer to the outlet 102. With this arrangement, the gas delivery line 41 is positioned closer to the outlet 102 of the filter 1, allowing steam to be delivered approximately from one end of the liquid delivery line 3 to the other. The steam can traverse the entire liquid delivery line 3, extending its delivery path and increasing the cleaning range of the liquid delivery line 3. Simultaneously, almost all steam flow directions are consistent with the mother liquor delivery direction, avoiding any obstruction to mother liquor delivery. The steam can purge and propel the mother liquor, assisting in its delivery and improving delivery efficiency.

[0053] In one embodiment, such as Figures 1-2 As shown, the steam assembly 4 also includes a first control valve 42, which can be a solenoid valve or a mechanical valve, etc. The first control valve 42 is located in the gas pipeline 41 and is used to open and close the gas pipeline 41.

[0054] For example, when the filter 1 is initially running, since no crystals have accumulated in the infusion line 3, the first control valve 42 can be closed, and steam cannot be delivered to the infusion line 3 through the gas line 41, thus saving steam usage and improving efficiency. After the filter 1 has been running for a period of time, if crystals begin to adhere to the inner wall of the infusion line 3, the first control valve 42 will be opened, and steam will be delivered to the infusion line 3 through the gas line 41, thereby cleaning and unblocking the infusion line 3.

[0055] In one embodiment, the steam assembly 4 further includes a sensor (not shown) and a controller (not shown). The sensor, specifically a flow sensor, is installed inside the infusion line 3 to detect the flow rate of the infusion line 3. The controller is electrically connected to both the sensor and the first control valve 42. The sensor transmits the detected flow rate information to the controller. After acquiring the actual flow rate, the controller compares the actual flow rate with a preset flow rate. If the actual flow rate is less than the preset flow rate, it means that the infusion line 3 is starting to become blocked. The controller then controls the first control valve 42 to open and controls the opening time of the first control valve 42, allowing the steam to periodically purge the infusion line 3. This effectively changes the mother liquor recovery conditions and eliminates the conditions for mother liquor crystallization. When there is partial crystallization or even blockage in the infusion line 3, the high-temperature dissolution and pressure purging action of the steam promptly cleans and unblocks the infusion line 3, improving the speed and thoroughness of the cleaning.

[0056] When material is filtered on the filter membrane of filter 1, the liquid in the material is filtered and discharged through the filter membrane, while the solids in the material remain on the filter membrane. If the material undergoes solid-liquid separation solely under its own gravity, the solid-liquid separation time will be relatively long, affecting the filtration efficiency.

[0057] Therefore, such as Figures 1-2 As shown, the filtration system also includes an air inlet pipe 51. The filter 1 is equipped with a second inlet 103, and the air inlet pipe 51 is connected to the second inlet 103 of the filter 1 for introducing compressed gas into the filter 1. With this configuration, the filter 1 uses compressed air as a purging medium. The compressed air can apply a certain pressure to the material on the surface of the filter membrane, achieving solid-liquid separation and further improving the efficiency of solid-liquid separation. A pressure difference is created by pressurizing the compressed gas, forming a filter cake on the surface of the filter membrane.

[0058] In one embodiment, such as Figures 1-2 As shown, the filtration system also includes a second control valve 52, which can be a solenoid valve. The second control valve 52 is located in the air inlet pipe 51 and is used to control the opening and closing of the air inlet pipe 51. When the filter 1 is running normally, the second control valve 52 is in the open state, and compressed air is delivered to the filter 1 through the air inlet pipe 51, which helps the filter 1 to separate solids and liquids.

[0059] In one embodiment, at least one of the first control valve 42 and the second control valve 52 is open.

[0060] For example, during the initial operation of filter 1, the first control valve 42 is closed and the second control valve 52 is open. Compressed air is delivered to filter 1 through the air inlet pipe 51, which facilitates solid-liquid separation in filter 1. At this time, no crystals have accumulated in the liquid delivery pipe 3, so the first control valve 42 can be closed, saving steam consumption and improving the effective utilization rate.

[0061] For example, after the filter 1 has been running for a period of time, both the first control valve 42 and the second control valve 52 are open, and compressed air is delivered to the filter 1 through the air inlet pipe 51, which facilitates the solid-liquid separation of the filter 1. At this time, crystals have gradually accumulated in the liquid delivery pipe 3, the first control valve 42 is opened, and steam is delivered to the liquid delivery pipe 3 through the air delivery pipe 41, thereby cleaning and unblocking the liquid delivery pipe 3.

[0062] It is understood that the controller is electrically connected to the filter 1 and the second control valve 52. According to the different working stages of the filter 1 and the different degrees of blockage in the infusion line 3, the controller controls the opening and closing of the first control valve 42 and / or the second control valve 52, so that the first control valve 42 and the second control valve 52 work together.

[0063] In one embodiment, the filtration system further includes a washing line 7, which is connected to the filter 1 and is used to flush and wash the filter 1 to prevent the filter 1 from becoming clogged.

[0064] In summary, the filtration system provided by this utility model delivers compressed gas to the filter 1 via the inlet pipe 51. The filter 1 uses compressed air as a purging medium to achieve solid-liquid separation. The mother liquor discharged after separation enters the storage tank 2 through the delivery pipe 3. If the mother liquor is affected by low temperature or residual water on the inner wall of the delivery pipe 3, the solute in the mother liquor recrystallizes and precipitates, adsorbing onto the inner wall of the delivery pipe 3. Steam is delivered via the gas delivery pipe 41 to purge the delivery pipe 3. Under the action of high-temperature dissolution and pressure purging by the steam, the crystals in the delivery pipe 3 dissolve in the mother liquor or loosen and enter the storage tank 2 with the mother liquor, thereby improving the blockage of the delivery pipe 3. The steam purging method solves the problem of blockage in the delivery pipe 3, reduces the amount of solvent used, reduces the number of solvent washing operations, extends the solvent washing cycle, reduces maintenance costs, and improves production efficiency.

[0065] Example 2

[0066] This embodiment is similar to Embodiment 1, except that the anti-blocking method of the infusion line 3 is different.

[0067] like Figure 3As shown, the filtration system provided in this embodiment also includes a circulation component 6, which includes a circulation pipeline 61 and a circulation pump 62. One end of the circulation pipeline 61 is connected to the storage tank 2, and the other end is connected to the delivery pipeline 3. The circulation pump 62 is connected to the circulation pipeline 61, so that the liquid in the storage tank 2 is transported to the delivery pipeline 3 through the circulation pipeline 61 for flushing and dissolving crystals in the delivery pipeline 3.

[0068] When crystals accumulate on the inner wall of the infusion line 3, the circulation pump 62 is started. The mother liquor in the storage tank 2 is transported to the infusion line 3 through the circulation line 61. The mother liquor washes away the crystals in the infusion line 3 and flows back to the storage tank 2, realizing the self-circulation of the storage tank 2. While reducing the blockage of the infusion line 3, the total amount of mother liquor in the storage tank 2 is not reduced.

[0069] For example, after the filter 1 has been running for a period of time, both the first control valve 42 and the second control valve 52 are open, and compressed air is delivered to the filter 1 through the air inlet pipe 51, which facilitates solid-liquid separation in the filter 1. At this time, crystals have gradually accumulated in the liquid delivery pipe 3, the first control valve 42 is opened, and steam is delivered to the liquid delivery pipe 3 through the air delivery pipe 41. The circulation pump 62 is started, and the mother liquor in the storage tank 2 is delivered to the liquid delivery pipe 3 through the circulation pipe 61, realizing the operation process of periodically cleaning and unblocking the liquid delivery pipe 3.

[0070] For example, when filter 1 stops working, it is not performing any filtration operations. The second control valve 52 is closed, suspending the supply of compressed gas to filter 1 via the air inlet pipe 51. Since crystals have accumulated in the liquid delivery pipe 3 during previous use of filter 1, the first control valve 42 is open, allowing steam to be delivered to the liquid delivery pipe 3 via the gas delivery pipe 41. This starts the circulation pump 62, and the mother liquor in the storage tank 2 is delivered to the liquid delivery pipe 3 via the circulation pipe 61, thus achieving the periodic cleaning and unblocking of the liquid delivery pipe 3.

[0071] In one embodiment, such as Figure 3 As shown, the circulation assembly 6 also includes a check valve 64, wherein the check valve 64 may be a one-way valve. The check valve 64 is installed on the circulation pipeline 61 and is used to restrict the flow direction of the circulation pipeline 61 so that the mother liquor in the circulation pipeline 61 can only flow in one direction, which is beneficial for flushing and cleaning the infusion pipeline 3.

[0072] If the connection between the circulation line 61 and the infusion line 3 is located in the middle of the infusion line 3 or near the other end, the circulation line 61 can only flush the downstream part of the infusion line 3 and cannot solve the problem of blockage in the upstream part of the infusion line 3.

[0073] To solve this problem, the connection between the circulation line 61 and the infusion line 3 is located on the side of the infusion line 3 closer to the outlet 102.

[0074] With this configuration, the circulation pipeline 61 is positioned closer to the outlet 102 of the filter 1, allowing the mother liquor transported by the circulation pipeline 61 to be transported approximately from one end of the delivery pipeline 3 to the other. The mother liquor can traverse the entire delivery pipeline 3, extending its transport path and increasing the cleaning range of the delivery pipeline 3. Simultaneously, almost all of the mother liquor's flow direction is consistent with its delivery direction, preventing any obstruction to mother liquor transport and thus assisting in mother liquor transport, thereby improving transport efficiency.

[0075] If the concentration of the mother liquor in the storage tank 2 is relatively low, the mother liquor may be difficult to dissolve and crystallize when flushing the infusion pipeline 3 using the circulation pipeline 61, which will affect the cleaning effect.

[0076] For this purpose, the circulation assembly 6 also includes a replenishment line 63, which is connected to the circulation line 61 and is used to introduce solvent into the circulation line 61.

[0077] By using a separate replenishment line 63 to deliver solvent, the concentration of the mother liquor delivered from the circulation line 61 to the infusion line 3 is increased, so that the higher concentration of the mother liquor can effectively dissolve the crystals on the inner wall of the infusion line 3. As the dissolution area increases, the volume of the crystals may gradually shrink, changing from large crystals to small crystals, or some small crystals may be completely dissolved into the mother liquor, reducing the possibility of blockage on the inner wall of the infusion line 3.

[0078] Understandably, when the infusion line 3 becomes blocked, the steam assembly 4 and the circulation assembly 6 can be used simultaneously. The circulation assembly 6 assists in cleaning the infusion line 3, further improving the thoroughness of unblocking the infusion line 3.

[0079] It should be noted that the embodiments of this utility model are merely one example of the principles employed by the present utility model, as shown in the accompanying drawings and described herein. Those skilled in the art will clearly understand that the principles of this utility model are not limited to any details or components of the apparatus shown in the accompanying drawings or described in the specification.

[0080] It should be understood that this invention is not limited to the detailed structure and arrangement of the components described herein. This invention can have other embodiments and can be implemented and performed in various ways. The foregoing variations and modifications fall within the scope of this invention. It should be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more individual features mentioned or apparent in the text and / or drawings. All these different combinations constitute multiple alternative aspects of this invention. The embodiments described in this specification illustrate the best known mode for implementing this invention and will enable those skilled in the art to utilize this invention.

[0081] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and exemplary embodiments are to be considered as exemplary only, and the true scope and spirit of the invention are indicated by the appended claims.

[0082] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of protection of this utility model is limited only by the appended claims.

Claims

1. A filtration system, characterized in that, include: A filter is provided with a first inlet and an outlet, the first inlet is used to introduce material, and the filter is used for solid-liquid separation; The liquid storage tank and the infusion pipeline, wherein one end of the infusion pipeline is connected to the outlet and the other end is connected to the liquid storage tank; A steam assembly, connected to the infusion line, is used to deliver steam to the infusion line.

2. The filtration system according to claim 1, characterized in that, The steam assembly includes: A gas delivery pipeline, one end of which is provided with a steam inlet, and the other end is connected to the liquid delivery pipeline.

3. The filtration system according to claim 2, characterized in that, The steam assembly also includes: A first control valve is installed in the gas pipeline and is used to open and close the gas pipeline.

4. The filtration system according to claim 2, characterized in that, The connection between the gas pipeline and the liquid pipeline is located on the side of the liquid pipeline closer to the outlet.

5. The filtration system according to claim 3, characterized in that, It also includes an intake assembly, which includes: The filter is provided with a second inlet, and the air intake pipe is connected to the second inlet for introducing compressed gas into the filter.

6. The filtration system according to claim 5, characterized in that, The air intake assembly also includes: The second control valve is located in the intake pipe and is used to control the opening and closing of the intake pipe.

7. The filtration system according to claim 6, characterized in that, At least one of the first control valve and the second control valve is open.

8. The filtration system according to any one of claims 1-7, characterized in that, It also includes a loop component, which includes: A circulation pipeline, one end of which is connected to the storage tank and the other end of which is connected to the infusion pipeline; A circulation pump, connected to the circulation pipeline, allows the mother liquor in the storage tank to be transported to the infusion pipeline through the circulation pipeline for flushing and dissolving crystals in the infusion pipeline.

9. The filtration system according to claim 8, characterized in that, The loop component also includes: A replenishment line is connected to the circulation line and is used to introduce solvent into the circulation line.

10. The filtration system according to claim 8, characterized in that, The connection between the circulation pipeline and the infusion pipeline is located on the side of the infusion pipeline closer to the outlet.

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