Multi-stage quick-release liquid filtering device suitable for glove box

Abstract

The utility model relates to a multi-stage quick-release liquid filtering device suitable for a glove box, belongs to the technical field of auxiliary equipment of the glove box, and solves the problems that an existing liquid filtering device in the glove box is low in efficiency, difficult to maintain and inconvenient to operate. The device comprises a supporting frame, a shell and a filter module, the shell is composed of at least three detachable shell sections including a first cylindrical shell section, a second cylindrical shell section, a third cylindrical shell section and a non-cylindrical bottom shell section, and the bottom shell section is provided with a liquid collecting cavity. The filter module comprises a first-stage filter module, a second-stage filter module and a third-stage filter module, the stage number can be three or more than three, and the filter modules are arranged between adjacent shell sections. And quick connection and disassembly are realized through the quick-disassembly clamp flange. According to the utility model, a multi-stage filtering system and a quick-release design are combined, so that efficient purification and convenient maintenance are realized, and the device is suitable for experiments and production with high-purity liquid requirements.

Description

Technical Field

[0001] This utility model relates to the field of glove box auxiliary equipment technology, and in particular to a multi-stage quick-release liquid filtration device suitable for glove boxes. Background Technology

[0002] With the rapid development of high-tech industries and precision experimental techniques, glove boxes are increasingly widely used in fields such as electronic chip manufacturing, biomedical research and development, and fine chemical synthesis. Glove boxes provide a highly controllable inert or dust-free and sterile environment for operations, ensuring that experimental or production processes are not disturbed by the external environment. In these fields, the handling of liquid materials requires extremely high purity; therefore, the liquid filtration device within the glove box is particularly important.

[0003] Currently, most liquid filtration devices used in glove boxes are simple, one-piece structures that rely primarily on a single filter screen for filtration. While this structure can meet basic filtration needs, it has many shortcomings when dealing with complex liquid handling tasks.

[0004] Traditional filtration devices typically only remove larger particulate impurities, offering poor performance against dissolved impurities and microorganisms. Furthermore, filter components are prone to clogging after prolonged use, requiring frequent replacement. However, existing replacement procedures are cumbersome and complex, often necessitating the removal of numerous connecting pipes and the use of specialized tools to unscrew multiple fasteners. This not only consumes significant manpower, resources, and time but can also lead to prolonged downtime of the glove box, impacting work efficiency. Simultaneously, the prolonged contact between the external and internal environments can introduce new contaminants, jeopardizing the smooth operation of experiments or production. Utility Model Content

[0005] Based on the above analysis, the present invention aims to provide a multi-stage quick-release liquid filtration device suitable for glove boxes, in order to solve the problems of low efficiency, difficult maintenance and inconvenient operation of existing liquid filtration devices in glove boxes.

[0006] The objective of this utility model is mainly achieved through the following technical solutions:

[0007] This invention proposes a multi-stage quick-release liquid filtration device suitable for glove boxes, comprising a support frame, a housing, and a filter module;

[0008] The shell is fixed on the support frame and consists of a hollow shell section and a detachable bottom shell section from top to bottom. The hollow shell section includes at least three detachable first shell section, second shell section and third shell section. The edge portion of the hollow shell section is provided with an annular flange, and the annular flange is only provided at the connection of adjacent shell sections.

[0009] The filter module has at least three stages, including a primary filter module, a secondary filter module, and a tertiary filter module, with each stage of the filter module being disposed between adjacent housing sections.

[0010] Furthermore, the filter module includes, from bottom to top, a bottom support mesh, a middle filter material, and a top sealing ring, wherein the support mesh consists of a main body portion with multiple through holes and a peripheral non-porous edge portion.

[0011] Furthermore, the outer diameter of the edge portion of the support mesh is consistent with the outer diameter of the sealing ring and the flange of the housing section.

[0012] Furthermore, the filter media has different pore sizes, from the first-stage filter module to the nth-stage filter module, the pore size of the filter media decreases sequentially, where n is the total number of filter modules.

[0013] Furthermore, the filter media of the primary filter module has a pore size of 100 mesh, the filter media of the secondary filter module has a pore size of 5-10 μm, and the filter media of the tertiary filter module has a pore size of 0.22-0.45 μm.

[0014] Furthermore, the filter modules at each stage are fixed between adjacent housing sections using quick-release clamp flanges.

[0015] Furthermore, the housing is transparent and corrosion-resistant.

[0016] Furthermore, the first housing section is provided with a liquid inlet and an air inlet, and the bottom housing section is provided with a liquid outlet at its lower part.

[0017] Furthermore, the liquid inlet is equipped with a liquid inlet flow regulating valve with a dial; the air inlet is equipped with an air inlet flow regulating valve with a dial.

[0018] Furthermore, the bottom housing section is provided with a liquid collection chamber.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] 1. This utility model's filtration device differs from single-stage filtration. It combines pre-filtration, secondary filtration, and precision filtration, employing a multi-stage filtration system to purify different types of impurities in liquids, such as large solid particles, dissolved substances, and microorganisms. This meets the extremely high purity requirements of glove boxes, ensuring that subsequent experiments or production processes are not affected by contamination, greatly improving product quality and process stability. It is particularly suitable for scenarios such as the preparation of electronic-grade chemical reagents and the purification of cell culture media, where impurities are extremely sensitive. Simultaneously, the pre-filtration removes large particulate impurities, reducing the burden on subsequent filtration, effectively extending filter life, reducing replacement frequency, and improving the overall stability and ease of maintenance of the equipment.

[0021] 2. Unlike simple one-piece structures, the filtration device of this utility model adopts a quick-release design. Each stage of the filter module is fixed between adjacent housings by quick-release clamp flanges, which enable rapid connection of the housings. Whether it is routine maintenance to replace filter screens and filter media, or emergency repairs in case of sudden failures, operators can quickly complete the operation within the limited space of the glove box without complicated tools, minimizing glove box downtime, improving overall work efficiency, and reducing economic losses caused by equipment maintenance.

[0022] 3. The filtration device of this utility model has a housing that is different from the traditional metal structure. Instead, it adopts a transparent and corrosion-resistant structure, which facilitates real-time monitoring of the filtration process. It is also equipped with a flow regulating valve, which can accurately control the flow of liquid and gas. These design details fully consider the special and convenient needs of operation inside the glove box, providing users with a comfortable and efficient user experience.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a front view of the multi-stage quick-release liquid filtration device of this utility model;

[0026] Figure 2 This is a top view of the support mesh in the filter device of this utility model;

[0027] Figure 3 This is a top view of the sealing ring in the filter device of this utility model;

[0028] Figure 4 This is a top view of the clamp flange in the filter device of this utility model.

[0029] Figure label:

[0030] 11-First housing section; 12-Second housing section; 13-Third housing section; 14-Bottom housing section; 2-Air inlet; 3-Liquid inlet; 4-Liquid outlet; 5-Liquid inlet flow regulating valve; 61-First-stage filter module; 62-Second-stage filter module; 63-Third-stage filter module; 7-Air inlet flow regulating valve; 8-Support frame; 9-Main body; 10-Through hole; 15-Edge part; 16-Annular flange; 17-Liquid collection chamber. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0032] A specific embodiment of this utility model discloses a multi-stage quick-release liquid filtration device suitable for glove boxes, including a support frame 8, a housing, and a filter module;

[0033] The shell is fixed to the support frame 8 and consists of a hollow shell section and a detachable bottom shell section 14 from top to bottom. The hollow shell section includes at least three detachable first shell sections 11, second shell sections 12, and third shell sections 13. The edge portion of the hollow shell section is provided with an annular flange 16, and the annular flange 16 is only provided at the connection between adjacent shell sections. The bottom shell section 14 is provided with a liquid collection chamber 17.

[0034] The filter module is at least three-stage, including a primary filter module (61), a secondary filter module (62), and a tertiary filter module (63), with each filter module being disposed between adjacent housing sections.

[0035] The filter module has at least three stages, including a primary filter module 61, a secondary filter module 62, and a tertiary filter module 63, with each stage of the filter module being disposed between adjacent housing sections.

[0036] Traditional glove boxes typically employ simple, one-piece liquid filtration systems, relying primarily on a single filter screen. While this design meets basic filtration needs, it falls short when handling complex liquid processing tasks, and the filter screen is prone to clogging, requiring frequent replacement.

[0037] This invention employs a multi-stage filtration system, combining pre-filtration, secondary filtration, and precision filtration. It targets different types of impurities in liquids, such as large solid particles, dissolved substances, and microorganisms, purifying them layer by layer to achieve efficient and long-lasting filtration. Simultaneously, the pre-filtration removes large particulate impurities, reducing the burden on subsequent filtration processes, effectively extending filter lifespan, reducing replacement frequency, and improving the overall stability and ease of maintenance of the equipment.

[0038] Furthermore, the filter module, from bottom to top, includes a bottom support mesh, a middle filter media, and a top sealing ring, wherein the support mesh is as follows: Figure 2 As shown, it consists of a main body portion 9 with multiple through holes 10 and a surrounding non-perforated edge portion 15.

[0039] Furthermore, the outer diameter of the edge portion 15 of the support mesh is consistent with the outer diameter of the sealing ring and the annular flange 16 of the housing section, so that these annular components can be precisely aligned.

[0040] The support mesh is made of a corrosion-resistant and acid- and alkali-resistant material, preferably 316L stainless steel.

[0041] Specifically, the structure of the sealing ring is as follows: Figure 3 The ring shown is the same size as the support mesh, with an inner diameter slightly smaller than the filter media. It is used to fix the filter media to prevent it from moving or deforming, to prevent liquid leakage, and to maintain a seal.

[0042] The sealing ring is made of a material that is corrosion-resistant, acid and alkali-resistant, and has excellent sealing performance; preferably, it is a fluorosilicone sealing ring.

[0043] Furthermore, the filter media of the filter modules have different pore sizes, from the first-stage filter module 61 to the nth-stage filter module, the pore size of the filter media decreases sequentially, where n is the total number of stages of the filter modules.

[0044] Furthermore, the filter media pore size of the primary filter module 61 is 100 mesh, the filter media pore size of the secondary filter module 62 is 5-10 μm, and the filter media pore size of the tertiary filter module 63 is 0.22-0.45 μm.

[0045] Generally, the primary filter module 61 uses 100-mesh filter paper as the filter media, mainly for pre-filtration to remove large particulate impurities and prevent clogging during subsequent secondary and tertiary filtration. The secondary filter module 62 uses a 5-10 μm filter membrane as the filter media, mainly for secondary filtration to further remove dissolved impurities. The tertiary filter module 63 uses a 0.22-0.45 μm filter membrane as the filter media, mainly for precision filtration to remove microorganisms and other tiny impurities.

[0046] Preferably, the filter membrane material is nylon or PPTF.

[0047] It should be noted that the filter media of each stage of the filter module can be replaced with other materials according to actual needs. Generally, the filter media of the primary filter module 61, the secondary filter module 62, and the tertiary filter module 63 are used to filter impurity particles with progressively smaller sizes to adapt to different filtration requirements.

[0048] Furthermore, the filter modules at each stage are fixed between adjacent housing sections using quick-release clamp flanges.

[0049] The quick-release clamp flange, as Figure 4 As shown, this is a clamp flange consisting of two semi-circular rings connected by a hinge. During installation, it can be opened, the annular flange 16 of the adjacent housing section inserted into the clamp, the clamp closed, and bolts passed through the holes on the outside of the flange for secure installation, enabling quick installation. For disassembly, loosen the bolts, open the clamp, and the filter module can be quickly removed.

[0050] The quick-release clamp flange is made of corrosion-resistant and acid- and alkali-resistant material, preferably 316L stainless steel.

[0051] The quick-release clamp flange design allows for rapid connection and disconnection of the housing, facilitating quick replacement of the filter screen and media. This design eliminates the need for special tools, enabling easy maintenance even within the confined space of the glove box, thereby reducing downtime and improving work efficiency.

[0052] Furthermore, the housing is a transparent and corrosion-resistant structure, such as transparent plastic. This design, unlike conventional metal constructions, utilizes transparent materials, allowing the operator to directly observe the filtration process. This transparent design facilitates real-time monitoring, enhances operational intuitiveness, and thus improves work efficiency.

[0053] Furthermore, the first housing section 11 is provided with a liquid inlet 3 and an air inlet 2, and the bottom housing section 14 is provided with a liquid outlet 4 at its lower part. The liquid inlet 3 is used to add the liquid to be filtered, while the air inlet 2 is used to introduce gas to increase the pressure within the filtration system. This pressurization helps to promote the liquid to pass through the filter media more quickly, thereby improving the filtration efficiency.

[0054] Furthermore, the liquid inlet 3 is provided with a liquid inlet flow regulating valve 5; the air inlet 2 is provided with an air inlet flow regulating valve 7.

[0055] Furthermore, both the liquid inlet flow regulating valve 5 and the air inlet flow regulating valve 7 are equipped with dials marked with flow rate graduations for precise flow rate adjustment. Operators can precisely adjust the liquid and gas flow rates according to actual needs to ensure a stable and efficient filtration process.

[0056] During filtration within the glove box, the liquid to be filtered is introduced into the inlet 3 via a peristaltic pump. Simultaneously, gas is injected into the air inlet 2 via a pump to increase the internal pressure of the filtration system, promoting smoother passage of the liquid through the filter media. The filtration rate can be precisely controlled by finely adjusting the air inlet flow control valve 7 and the liquid inlet flow control valve 5, enabling precise management of the filtration process. After multiple filtration stages, the filtrate is collected at the outlet 4, completing the filtration operation.

[0057] The multi-stage quick-release liquid filtration device for glove boxes provided in this embodiment solves the problems of low efficiency, difficult maintenance, and inconvenient operation of existing liquid filtration devices in glove boxes. By combining a multi-stage filtration system with a quick-release design, it achieves efficient purification of liquids while significantly improving maintenance efficiency and ease of use. It is especially suitable for experimental or production environments with extremely high requirements for liquid purity, such as the preparation of electronic-grade chemical reagents and the purification of cell culture media.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage quick-release liquid filter device suitable for use in a glove box, characterized by, Includes a support frame (8), a housing, and a filter module; The shell is fixed on the support frame (8) and consists of a hollow shell section and a detachable bottom shell section (14) from top to bottom. The hollow shell section includes at least three detachable first shell sections (11), second shell sections (12), and third shell sections (13). The edge portion of the hollow shell section is provided with an annular flange (16), and the annular flange (16) is only provided at the connection of adjacent shell sections. The first housing section (11) is provided with a liquid inlet (3) and an air inlet (2) at the top. The liquid inlet (3) is used to add the liquid to be filtered, and the air inlet (2) is used to introduce gas to increase the pressure in the filtration system. The filter module is at least three-stage, including a primary filter module (61), a secondary filter module (62), and a tertiary filter module (63), with each filter module being disposed between adjacent housing sections; The filter module includes, from bottom to top, a bottom support mesh, a middle filter material, and a top annular sealing ring. The support mesh consists of a main body (9) with multiple through holes (10) and a peripheral non-porous edge portion (15). The outer diameter of the edge portion (15) of the support mesh is consistent with the outer diameter of the sealing ring and the annular flange (16) of the housing section, so that these annular components are precisely connected. The filter media pore size of the primary filter module (61) is 100 mesh, the filter media pore size of the secondary filter module (62) is 5~10μm, and the filter media pore size of the tertiary filter module (63) is 0.22~0.45μm. Each stage of the filter module is fixed between adjacent housing sections by quick-release clamp flanges; The quick-release clamp flange is a clamp flange consisting of two semi-circular rings connected by a hinge. During installation, it is opened, the annular flange (16) of the adjacent shell section is placed into the clamp, the clamp is closed, and bolts are passed through the holes on the outside of the flange to fix it, so as to achieve quick installation.

2. The multi-stage quick disconnect liquid filter device of claim 1, wherein, The filter media have different pore sizes, from the first-stage filter module (61) to the nth-stage filter module, the pore size of the filter media decreases sequentially, where n is the total number of filter modules.

3. The multi-stage quick disconnect liquid filter device of claim 1, wherein, The shell is transparent and corrosion-resistant.

4. The multi-stage quick disconnect liquid filter device of claim 1, wherein, The bottom shell section (14) is provided with a liquid outlet (4) at its lower part.

5. The multi-stage quick disconnect liquid filter device of claim 4, wherein, The liquid inlet (3) is equipped with a liquid inlet flow regulating valve (5) with a scale; the air inlet (2) is equipped with an air inlet flow regulating valve (7) with a scale.

6. The multi-stage quick disconnect liquid filter assembly of any of claims 1-5, wherein, The bottom shell section (14) is provided with a liquid collection chamber (17).

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