A liquid filtration device

Abstract

The utility model discloses a liquid filtering device relates to water treatment equipment field, including agitator tank and filter equipment, filter equipment with agitator tank connects, a plurality of hollow filter tubes can be detachably arranged in filter equipment, a plurality of hollow filter tubes are in parallel, filter equipment is provided with water inlet and water outlet, water inlet with water outlet all with agitator tank is connected, and the above -mentioned device can solve the problem of low water body filtering efficiency in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment, and in particular to a liquid filtration device. Background Technology

[0002] In fields such as bio-fermentation, fine chemicals, and food processing, it is often necessary to filter liquids with high solids content, large particle size, and high viscosity (such as fungal fermentation filtrates, traditional Chinese medicine extracts, and industrial suspensions) to separate solid and liquid impurities, improve liquid purity, and provide qualified raw materials for subsequent purification, concentration, or product preparation. The filtration effect of such liquids directly affects the quality of the final product and production efficiency, thus placing stringent requirements on the stability, efficiency, and ease of maintenance of filtration equipment.

[0003] Currently, the industry mainly uses three types of filtration methods for the aforementioned viscous, high-impurity liquids, but all have significant technical drawbacks: Plate and frame filtration relies on filter cloth to trap impurities. Although it can handle liquids with high solids content, it has low filtration efficiency, the filter cloth is prone to clogging, requiring frequent disassembly and replacement of consumables, and is difficult to clean, resulting in long production interruptions and making it difficult to adapt to continuous production needs. Centrifugal filtration separates solids and liquids through high-speed rotation. Although it has a fast processing speed, it has high energy consumption, high equipment operating noise, poor trapping effect on fine particles (particle size <50μm), and cannot achieve liquid circulation filtration, easily leading to incomplete filtration. Conventional membrane filtration uses flat sheet membranes or spiral wound membranes for filtration. The membrane modules are mostly fixed structures, making them difficult to disassemble and clean. Moreover, when dealing with viscous liquids, impurities easily adhere to the membrane surface quickly, forming "concentration polarization," causing a sharp drop in filtration flux. Frequent shutdowns are required to replace membrane elements, resulting in high maintenance costs. At the same time, the lack of an effective support structure makes the membrane modules prone to deformation and damage under liquid pressure, further shortening their service life.

[0004] In summary, current filtration equipment for viscous liquids with high impurities still has significant technical gaps in terms of filtration efficiency, ease of filter element maintenance, operational stability, and functional adaptability. There is an urgent need for a filtration device that can achieve efficient circulating filtration, easy filter element maintenance, and adaptability to the characteristics of liquids with high impurities, in order to solve the pain points of existing technologies. Utility Model Content

[0005] This invention provides a liquid filtration device that can solve the problem of low water filtration efficiency in the prior art.

[0006] To solve the above problems, this utility model provides a liquid filtration device, comprising: Mixing tank; A filtration device is connected to the mixing tank. The filtration device is detachably equipped with multiple hollow filter tubes arranged in parallel. The filtration device is equipped with an inlet and an outlet, both of which are connected to the mixing tank.

[0007] The liquid filtration device provided by this utility model has, but is not limited to, the following beneficial effects compared with the prior art: After being stirred in a mixing tank, the material enters the hollow filter tube in the filtration device for filtration, thus achieving effective filtration. If the material cannot be completely filtered, it can be returned to the mixing tank through the outlet for further stirring. When transported to the hollow filter tube, the material can be further filtered, improving filtration efficiency.

[0008] Preferably, the filtration device includes: A filter having a receiving cavity inside, and the water inlet being connected to the receiving cavity; A support assembly is disposed within the accommodating cavity at a position corresponding to the water inlet, and a hollow filter tube is disposed on one side of the support assembly relative to the water inlet. The water outlet is located on one side of the hollow filter tube relative to the support assembly.

[0009] Preferably, the support assembly is located at the bottom of the accommodating cavity, and the hollow filter tube is located above the support assembly.

[0010] Preferably, the support assembly includes a support tube, which is obliquely disposed within the accommodating cavity, and the opening of one end of the support tube near the hollow filter tube is tangentially abutting against the hollow filter tube.

[0011] Preferably, multiple support tubes are provided, the multiple support tubes are spirally arranged, and the multiple support tubes are connected to the water inlet and the hollow filter tube.

[0012] Preferably, the filter has a first outlet corresponding to the position of the support component, and the filter has a second outlet corresponding to the end of the hollow filter tube away from the support component.

[0013] Preferably, the mixing tank has a mixing chamber, and a filter screen is provided at the bottom of the mixing chamber.

[0014] Preferably, the mixing tank is equipped with a stirrer, which is located above the filter screen.

[0015] Preferably, the outlet of the filter is connected to a flushing pipe, and the flushing pipe is connected to the outlet.

[0016] Preferably, the filter is provided with a drain outlet, and a regulating valve is provided at the location of the drain outlet. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a liquid filtration device according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the overall structure of the mixing tank according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the overall structure of the filtration device according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the internal structure of the support component according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the internal cross-sectional structure of the filter according to an embodiment of the present invention.

[0019] Explanation of reference numerals in the attached figures: 100. Mixing tank; 110. Mixing chamber; 120. Filter screen; 130. Agitator; 140. Feed inlet; 150. Discharge outlet; 200. Filtration device; 210. Filter; 211. Water inlet; 212. Water outlet; 213. Receptacle; 220. Support assembly; 221. Support pipe; 230. First water outlet; 240. Second water outlet; 250. Flushing pipe; 260. Drain outlet; 261. Regulating valve; 300. Hollow filter tube; 400. Drive pump; 500. Return pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings showing multiple embodiments according to this application. It should be understood that the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments described in this application without creative effort will fall within the scope of protection of this application.

[0021] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing specific embodiments only and is not intended to limit this application; the terms "comprising," "including," "having," "containing," etc., in the description, claims, and accompanying drawings of this application are open-ended terms. Therefore, "comprising," "including," or "having" refers to, for example, a method or apparatus having one or more steps or elements, but is not limited to having only these one or more elements. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] It should be emphasized that when the term "comprising / including" is used in this specification, it is used to explicitly indicate the presence of the stated feature, integer, step, or component, but does not exclude the presence or addition of one or more other features, integers, steps, parts, or groups of features, integers, steps, or parts.

[0025] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0026] like Figures 1 to 5 As shown in the figure, a liquid filtration device provided by this utility model embodiment includes a stirring tank 100 and a filtration device 200. The filtration device 200 is connected to the stirring tank 100. The filtration device 200 is detachably provided with a plurality of hollow filter tubes 300, which are arranged in parallel. The filtration device 200 is provided with an inlet 211 and an outlet 212, both of which are connected to the stirring tank 100.

[0027] In this embodiment, the mixing tank 100 is a mixing device provided in the prior art. A feed inlet is provided on the mixing tube. The material enters the mixing tank 100 through the feed inlet 140 for mixing. The mixed material flows to the filter device 200 for filtration through the discharge port 150 and the water inlet 211. The hollow filter tube 300 provided in the filter device 200 can effectively filter the material, so that the material is filtered. The filtered material returns to the mixing tank 100 through the water outlet 212 for multiple mixing and filtration, so as to achieve efficient material processing.

[0028] In this embodiment, the outlet 212 and the mixing tank 100 are connected by a return pipe 500, so that the material can enter the mixing tank 100 through the outlet 212 and the return pipe 500.

[0029] In this embodiment, the material is a liquid, which is usually a liquid with high solid content, large particles, and high viscosity. The stirring tank can stir the solid particles in the liquid multiple times, which facilitates efficient filtration by the subsequent filtration device 200.

[0030] A drive pump 400 is provided between the mixing tank 100 and the filter device 200. The drive pump 400 can move the material in the mixing tank 100 into the filter device 200 to improve the filtration efficiency of the material.

[0031] The hollow filter tube 300 in this application is designed as a detachable structure. The detachable structure allows for effective replacement and cleaning of the hollow filter tube 300, facilitating the use of the filter device 200. The hollow filter tube 300 can also be used for coarse filtration of fungal fermentation filtrate.

[0032] In this embodiment, the hollow filter tube 300 is configured as a hollow tubular structure. The hollow filter tube 300 is made of polypropylene, polyester nylon, or polytetrafluoroethylene. This material selection gives the hollow filter tube 300 good chemical stability and mechanical strength, enabling it to adapt to different types of liquid filtration needs. The pore size of the hollow filter tube 300 can be customized according to actual filtration requirements, thereby achieving effective retention of particles of different sizes.

[0033] Preferably, a hollow filter membrane is provided on the hollow filter tube 300, and the hollow filter membrane effectively filters the water.

[0034] Multiple hollow filter tubes are arranged in parallel at 300mm intervals, which can effectively increase the filtration area of ​​materials and improve filtration efficiency.

[0035] In this embodiment, the filtration device 200 includes a filter 210 and a support assembly 220. The filter 210 has a receiving cavity 213, and the inlet 211 communicates with the receiving cavity 213. The support assembly 220 is disposed in the receiving cavity 213 at a position corresponding to the inlet 211. A hollow filter tube 300 is disposed on the support assembly 220 on one side relative to the inlet 211. The outlet 212 is located on one side of the hollow filter tube 300 relative to the support assembly 220.

[0036] Further, the support assembly 220 can preferably include an annular support plate and multiple radial support rods. The annular support plate is sealed to the inner wall of the filter 210. One end of the support rod is fixed to the annular support plate and the other end is connected to the end of the hollow filter tube 300. A flow regulating valve is provided at the inlet 211. An annular flow channel is formed between the inner wall of the accommodating cavity 213 and the hollow filter tube 300. The outlet 212 is connected to the annular flow channel.

[0037] The support assembly 220 forms a stable support structure through an annular support plate and support rod, which prevents the filter membrane from deforming or shifting under liquid pressure and ensures filtration stability. The flow regulating valve can control the water inlet speed to avoid damage to the filter membrane due to excessive flow rate. The annular flow channel design allows the filtered liquid to be evenly collected at the outlet 212, reducing flow resistance and improving filtration efficiency.

[0038] In this embodiment, the support component 220 is located at the bottom of the accommodating cavity 213, and the hollow filter tube 300 is located above the support component 220.

[0039] The filter 210 has a height of 1.5-2m, a hollow filter membrane length of 1-1.2m, and a distance of 30-50cm between the top of the filter membrane and the top of the filter 210. The bottom of the accommodating cavity 213 has a conical structure with a cone angle of 60-90 degrees.

[0040] The vertically arranged filter 210, combined with the filter membrane and support assembly 220, utilizes the gravity of the liquid to assist flow and reduce energy consumption during transport. The conical bottom structure facilitates the deposition of large particles of impurities in the liquid, preventing impurities from accumulating and clogging the inlet 211. The gap between the top of the filter membrane and the top of the filter 210 provides a buffer space to prevent liquid overflow and facilitate observation of the filter membrane's working status.

[0041] In this embodiment of the application, the support component 220 includes a support tube 221, which is obliquely arranged in the accommodating cavity 213, and the opening of the support tube 221 near the hollow filter tube 300 is tangentially abutting against the hollow filter tube 300.

[0042] The support tube 221 has an angle of 30-60 degrees with the horizontal plane. The end of the support tube 221 near the hollow filter tube 300 is provided with an arc-shaped interface. The radius of curvature of the arc-shaped interface is consistent with the outer radius of the hollow filter tube 300. A silicone sealing ring is fitted at the interface. The inner diameter of the support tube 221 is 1 / 2-2 / 3 of the inner diameter of the hollow filter membrane.

[0043] The obliquely positioned support tube 221 allows the liquid to enter the hollow filter tube 300 at an inclined angle. Combined with the arc-shaped interface, this creates a swirling flow along the tangential direction of the filter membrane, enhancing the contact between the liquid and the hollow filter membrane and improving filtration efficiency. A silicone sealing ring ensures a tight seal between the support tube 221 and the filter membrane, preventing unfiltered liquid from directly mixing into the filtrate. The inner diameter of the support tube 221 is rationally designed to ensure sufficient liquid delivery while avoiding excessive flow velocity that could impact the filter membrane. In this embodiment of the application, multiple support tubes 221 are provided, the multiple support tubes 221 are spirally arranged, and the multiple support tubes 221 are connected to the water inlet 211 and the hollow filter tube 300.

[0044] The number of support tubes 221 is the same as the number of hollow filter membranes. Multiple support tubes 221 are spirally distributed around the central axis of filter 210 with a pitch of 10-15cm. The inlet ends of each support tube 221 are connected to an annular water collection pipe, which is connected to the inlet 211.

[0045] The spiral-arranged support tubes 221 create a spiral flow field before the liquid enters the filter membrane, which can initially separate some impurities in the liquid and reduce the burden on the filter membrane. The annular water collection pipe ensures that the water inlet of each support tube 221 is uniform, avoiding overloading of some filter membranes due to uneven flow. The support tubes 221 correspond one-to-one with the filter membranes to realize the directional delivery of liquid and improve the stability and consistency of filtration.

[0046] In this embodiment of the application, a first water outlet 230 is provided on the filter 210 at the position corresponding to the support component 220, and a second water outlet 240 is provided on the filter 210 at the end of the hollow filter tube 300 away from the support component 220.

[0047] The first outlet 230 is connected to a coarse filtrate pipe, and the second outlet 240 is connected to a fine filtrate pipe. Check valves are installed on both pipes. The height of the first outlet 230 is lower than the top surface of the support component 220, and the height of the second outlet 240 is flush with the top of the hollow fiber membrane.

[0048] The first outlet 230 can collect the coarse filtrate that has been initially guided by the support component 220 but not completely filtered, while the second outlet 240 collects the fine filtrate after filtration by the filter membrane, realizing the classified collection of filtrates of different precision and improving the multi-functionality of the equipment; the check valve prevents the filtrate from flowing back and ensures the unidirectionality of the filtration process; the outlet 212 is reasonably designed in height to ensure that the coarse and fine filtrates can flow out naturally and reduce residue.

[0049] In this embodiment of the application, the mixing tank 100 has a mixing chamber 110, and a filter screen 120 is provided at the bottom of the mixing chamber 110.

[0050] The filter screen 120 is a metal woven mesh or nylon mesh with a mesh size of 50-100 mesh. The edge of the filter screen 120 is detachably connected to the inner wall of the mixing tank 100 through a flange structure. The bottom of the mixing chamber 110 is inclined towards the filter screen 120 at an angle of 5-10 degrees.

[0051] The filter screen 120 can pre-filter large particulate impurities (such as particles with a diameter > 150 μm) in the liquid, preventing them from entering the filter device 200 and clogging the hollow filter membrane, thus extending the service life of the filter membrane; the detachable flange connection facilitates the cleaning and replacement of the filter screen 120; the inclined bottom structure guides the liquid to flow towards the filter screen 120, reducing liquid residue in the stirring chamber 110 and improving filtration efficiency.

[0052] In this embodiment of the application, a stirrer 130 is provided inside the stirring tank 100, and the stirrer 130 is located above the filter screen 120.

[0053] The agitator 130 stirs the liquid, making the impurities in the liquid evenly dispersed, preventing the impurities from settling at the bottom of the mixing tank 100, and ensuring the stability of subsequent filtration; and the adjustable speed of the agitator 130 can adapt to the stirring needs of liquids with different viscosities, preventing liquid splashing or increased energy consumption due to excessive speed.

[0054] In this embodiment of the application, a flushing pipe 250 is connected to the outlet 212 of the filter 210, and the flushing pipe 250 is connected to the outlet 212.

[0055] The flushing pipe 250 is equipped with a flushing pump and a solenoid valve. The output pressure of the flushing pump is 0.2-0.5MPa, and the flushing direction is opposite to the liquid flow direction during filtration. The flushing pipe 250 is also connected to a cleaning agent storage tank, which can selectively introduce cleaning agent.

[0056] The backwashing function can effectively remove impurities adhering to the surface of the hollow fiber filter membrane, restore the filtration performance of the membrane, and extend the replacement cycle of the membrane. The control of the flushing pressure and solenoid valve realizes the automation and precision of the flushing process, reducing the intensity of manual operation. The cleaning agent can be introduced to further enhance the flushing effect, which is suitable for scenarios where stubborn impurities are attached to the surface of the filter membrane.

[0057] In this embodiment of the application, the filter 210 is provided with a drain outlet 260, and a regulating valve 261 is provided at the location of the drain outlet 260.

[0058] The drain outlet 260 is located at the lowest point. With the help of the regulating valve 261, the residual liquid and deposited impurities in the filter 210 can be completely discharged, which facilitates cleaning and maintenance after the equipment is shut down.

[0059] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. A liquid filtration device, characterized in that, include: Mixing tank; A filtration device is connected to the mixing tank. The filtration device is detachably equipped with multiple hollow filter tubes arranged in parallel. The filtration device is equipped with an inlet and an outlet, both of which are connected to the mixing tank.

2. The liquid filtration device according to claim 1, characterized in that, The filtration device includes: A filter having a receiving cavity inside, and the water inlet being connected to the receiving cavity; A support assembly is disposed within the accommodating cavity at a position corresponding to the water inlet, and a hollow filter tube is disposed on one side of the support assembly relative to the water inlet. The water outlet is located on one side of the hollow filter tube relative to the support assembly.

3. The liquid filtration device according to claim 2, characterized in that, The filter is arranged vertically, the support assembly is located at the bottom of the accommodating cavity, and the hollow filter tube is located above the support assembly.

4. The liquid filtration device according to claim 3, characterized in that, The support assembly includes a support tube, which is obliquely arranged within the accommodating cavity, and the opening of one end of the support tube near the hollow filter tube is tangentially abutted against the hollow filter tube.

5. The liquid filtration device according to claim 4, characterized in that, Multiple support pipes are provided, and the multiple support pipes are spirally arranged, and the multiple support pipes are connected to the water inlet and the hollow filter pipe.

6. The liquid filtration device according to claim 3, characterized in that, The filter has a first water outlet at the position corresponding to the support component, and the filter has a second water outlet at the end of the hollow filter tube away from the support component.

7. The liquid filtration device according to claim 1, characterized in that, The mixing tank has a mixing chamber, and a filter screen is installed at the bottom of the mixing chamber.

8. The liquid filtration device according to claim 7, characterized in that, The mixing tank is equipped with a stirrer, which is located above the filter screen.

9. The liquid filtration device according to claim 2, characterized in that, The filter is connected to a flushing pipe at its outlet, and the flushing pipe is connected to the outlet.

10. The liquid filtration device according to claim 2, characterized in that, The filter is provided with a drain outlet, and a regulating valve is provided at the location of the drain outlet.

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