A filter device with replaceable filter disc

Abstract

The utility model relates to experimental tool technical field especially a kind of filterable filter piece's suction filter device, including filter funnel and connecting pipe, the filter funnel one end is feed end, other end is the liquid outlet of funnel structure, the connecting pipe one end with the liquid outlet lead-through connection, other end can be accessed collection container, the connecting pipe one side is connected with suction pipe;The filter funnel inside near the liquid outlet one end is provided with filter piece, the filter piece with the filter funnel inner wall screw connection.A kind of filterable filter piece's suction filter device of the utility model, can be convenient for to filter core to wash and replace, reduce the cost expenditure of experiment.

Description

Technical Field

[0001] This utility model relates to the field of experimental tool technology, and in particular to a vacuum filtration device with replaceable filter plates. Background Technology

[0002] Sand core filtration devices are mainly used in laboratories and industrial production. They achieve liquid filtration through negative pressure suction, removing suspended particles, microorganisms, and impurities from the liquid through the principle of physical barrier. Their core components are ceramic sand cores, polytetrafluoroethylene (PTFE) sand cores, or stainless steel filter screens, with fine pore structures that effectively intercept solid particles and ensure filtration accuracy.

[0003] Because sand cores have high filtration precision, they are prone to clogging. In addition, the sand cores in current sand core filtration devices are fixed inside the device, making it difficult to clean them thoroughly, resulting in a high scrap rate. Moreover, the unit price is high, and the entire sand core needs to be replaced after it is damaged, which increases the burden of experiments. Sand core filtration devices cannot replace filter plates with corresponding pore sizes according to the size of the filtered particles. Therefore, it is necessary to prepare sand core filtration devices with different pore sizes according to the needs of the experiment, which is costly. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a vacuum filtration device with replaceable filter elements, which facilitates the cleaning and replacement of filter elements and reduces experimental costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A filter device with replaceable filter discs includes a filter funnel and a connecting pipe. One end of the filter funnel is a feed end, and the other end is a liquid outlet of the funnel structure. One end of the connecting pipe is conductively connected to the liquid outlet, and the other end can be connected to a collection container. A suction pipe is connected to one side of the connecting pipe. A filter disc is provided inside the filter funnel near the liquid outlet, and the filter disc is threadedly connected to the inner wall of the filter funnel.

[0007] Furthermore, the liquid outlet is provided with a conduit, one end of which is connected to the liquid outlet and the other end extends out of the connecting pipe.

[0008] Furthermore, a connecting ring is provided on the inner wall of the filter funnel near the liquid outlet end, and the filter sheet is threadedly connected to the connecting ring.

[0009] Furthermore, the filter element includes a filter core and a fixing cylinder. The filter core is fixedly connected to the inner wall of one end of the fixing cylinder, and the end of the fixing cylinder away from the filter core is threaded into the connecting ring.

[0010] Furthermore, a fixing ring is provided on the end face of one end of the fixing cylinder, the inner wall of the fixing ring is fixedly connected to the filter element, and the fixing ring can abut against the end face of the connecting ring; a retaining element is provided on each of the opposite sides of the fixing ring.

[0011] It also includes a disassembly rod, which is provided with a disassembly ring. One side of the disassembly ring is fixedly connected to the disassembly rod, and the other side is recessed with a slot that engages with the clip.

[0012] Furthermore, a sealing ring is provided on the side of the fixing ring facing the connecting ring.

[0013] Furthermore, both the connecting ring and the fixing cylinder are made of glass.

[0014] The beneficial effects of this utility model are:

[0015] 1. By drawing air through the suction pipe and connecting pipe, the collection container is under negative pressure, creating a pressure difference between the filter funnel and the collection container. Driven by this pressure difference, the solution in the filter funnel quickly passes through the filter plate, while solid particles are trapped by the filter plate, thus achieving solid-liquid separation. When the filter plate is blocked or damaged, it can be removed from the filter funnel by rotating it, facilitating cleaning or replacement without scrapping the entire filtration equipment. Furthermore, the detachable structure of the filter plate in this invention allows for the selection of a filter plate with a suitable pore size according to experimental needs, effectively reducing experimental costs.

[0016] 2. The fixing ring improves the sealing between the fixing cylinder and the connecting ring, preventing unfiltered solution from being directly discharged and ensuring the filtration effect. The disassembly ring is inserted into the filter funnel through the feed end, and the slot and clip engage with each other. The filter element can be easily disassembled or installed by rotating the disassembly rod, improving the installation efficiency and reducing the difficulty of filter element installation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a filter device with replaceable filter plates according to a preferred embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the filter structure of a filter device with replaceable filter sheets according to a preferred embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the clamping structure of a filter device with replaceable filter plates according to a preferred embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the disassembly ring structure of a filter device with replaceable filter plates according to a preferred embodiment of the present invention.

[0021] In the diagram, 1-filter funnel, 101-feed end, 102-liquid outlet end, 11-conduit, 12-connecting ring, 2-connecting pipe, 3-vacuum pipe, 4-filter plate, 41-filter element, 42-fixed cylinder, 43-fixed ring, 431-clamp, 44-sealing ring, 5-removal rod, 501-support rod, 51-removal ring, 511-slot, 52-handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] Please also see Figures 1 to 4 The present invention provides a preferred embodiment of a filter device with replaceable filter plates, comprising a filter funnel 1 and a connecting pipe 2.

[0026] One end of the filter funnel 1 is the feed end 101, and the other end is the liquid outlet end 102 of the funnel structure. One end of the connecting pipe 2 is connected to the liquid outlet end 102, and the other end can be connected to the collection container. A suction pipe 3 is connected to one side of the connecting pipe 2. A filter plate 4 is provided inside the filter funnel 1 near the liquid outlet end 102. The filter plate 4 is threadedly connected to the inner wall of the filter funnel 1.

[0027] In this embodiment, the end of the connecting pipe 2 furthest from the filter funnel 1 is provided with a ground joint to improve the sealing effect of the connection between the connecting pipe 2 and the collection container.

[0028] In this embodiment, a conduit 11 is provided at the liquid outlet 102. One end of the conduit 11 is connected to the liquid outlet 102, and the other end extends out of the connecting pipe 2. The filtered solution can be guided into the collection container through the conduit 11.

[0029] In this embodiment, air is drawn through the suction pipe 3 and the connecting pipe 2, and the collection container is in a negative pressure state, so that there is a pressure difference between the filter funnel 1 and the collection container. Under the driving force of the pressure difference, the solution in the filter funnel 1 quickly passes through the filter plate 4, while the solid particles are trapped by the filter plate 4, thereby achieving solid-liquid separation. When the filter plate 4 is blocked or damaged, it can be removed from the filter funnel 1 by rotating the filter plate 4, which facilitates the cleaning or replacement of the filter plate 4 without scrapping the entire filtration equipment.

[0030] Furthermore, the detachable structure of the filter 4 in this embodiment allows for the selection of a filter 4 with a suitable pore size according to experimental requirements, effectively reducing the cost of the experiment.

[0031] like Figure 1 and Figure 2 As shown, a connecting ring 12 is provided on the inner wall of the filter funnel 1 near the liquid outlet 102, and the filter plate 4 is threadedly connected to the connecting ring 12.

[0032] The filter element 4 includes a filter element 41 and a fixed cylinder 42. The filter element 41 is fixedly connected to the inner wall of one end of the fixed cylinder 42, and the end of the fixed cylinder 42 away from the filter element 41 is threaded into a connecting ring 12.

[0033] like Figure 1 and Figure 3 As shown, a fixing ring 43 is provided on the end face of one end of the fixing cylinder 42. The inner wall of the fixing ring 43 is fixedly connected to the filter element 41, and the fixing ring 43 can abut against the end face of the connecting ring 12. Clamping elements 431 are respectively protruding on opposite sides of the fixing ring 43.

[0034] like Figure 1 and Figure 4 As shown, it also includes a disassembly rod 5, which is provided with a disassembly ring 51. One side of the disassembly ring 51 is fixedly connected to the disassembly rod 5, and the other side is recessed with a groove 511 for engaging with the locking piece 431. Preferably, a handle 52 is provided at the end of the disassembly rod 5 away from the disassembly ring 51. One side of the disassembly ring 51 is fixedly connected to the disassembly rod 5 via an inclined support rod 501. The width and length of the groove 511 are slightly larger than the locking piece 431 so that the locking piece 431 can be embedded into the groove 511.

[0035] The fixing ring 43 improves the sealing between the fixing cylinder 42 and the connecting ring 12, preventing unfiltered solution from being discharged directly and ensuring the filtration effect. The disassembly ring 51 is inserted into the filter funnel 1 through the feed end 101, and the slot 511 and the clip 431 are engaged with each other. The filter element 4 can be easily disassembled or installed by rotating the disassembly rod 5, which improves the installation efficiency of the filter element 4 and reduces the installation difficulty of the filter element 4.

[0036] In this embodiment, both the connecting ring 12 and the fixing cylinder 42 are made of glass. The connecting ring 12 is connected to the inner wall of the filter funnel 1 by an adhesive; the filter element 41 is a sand core or a stainless steel filter screen, and the filter element 41 is bonded to the fixing ring 43 by an adhesive. The adhesive can be polyurethane adhesive silicone or other adhesives. The bonding between glass, the bonding between the sand core and the glass, and the bonding between stainless steel and glass are existing technologies, and will not be described again in this embodiment to save space.

[0037] like Figure 2 As shown, a sealing ring 44 is provided on the side of the fixing ring 43 facing the connecting ring 12. After the filter element 4 is tightened, the sealing ring 44 is clamped between the fixing ring 43 and the connecting ring 12, thereby increasing the sealing of the connection between the filter element 4 and the connecting ring 12 and ensuring the filtration effect.

[0038] In this embodiment, when the filter element 4 needs to be replaced, the disassembly ring 51 is inserted into the filter funnel 1 through the feed end 101, and the slot 511 and the clip 431 are engaged with each other. The filter element 4 is then loosened by rotating the disassembly rod 5. When installing the filter element 4, the filter element 4 is first placed into the filter funnel 1, and the fixing cylinder 42 is aligned with the connecting ring 12. The disassembly ring 51 is then inserted into the filter funnel 1, and the slot 511 and the clip 431 are engaged with each other. The filter element 4 can then be tightened by rotating the disassembly rod 5.

Claims

1. A vacuum filtration device with replaceable filter plates, characterized in that, The filter funnel (1) and the connecting pipe (2) are included. One end of the filter funnel (1) is the feed end (101) and the other end is the liquid outlet end (102) of the funnel structure. One end of the connecting pipe (2) is connected to the liquid outlet end (102) and the other end can be connected to the collection container. A suction pipe (3) is connected to one side of the connecting pipe (2). A filter plate (4) is provided in the filter funnel (1) near the liquid outlet end (102). The filter plate (4) is threaded to the inner wall of the filter funnel (1).

2. The vacuum filtration device with replaceable filter plates according to claim 1, characterized in that: The liquid outlet (102) is provided with a conduit (11), one end of which is connected to the liquid outlet (102) and the other end extends out of the connecting pipe (2).

3. The vacuum filtration device with replaceable filter plates according to claim 1, characterized in that: A connecting ring (12) is provided on the inner wall of the filter funnel (1) near the liquid outlet end (102), and the filter sheet (4) is threadedly connected to the connecting ring (12).

4. The vacuum filtration device with replaceable filter plates according to claim 3, characterized in that: The filter (4) includes a filter element (41) and a fixing cylinder (42). The filter element (41) is fixedly connected to the inner wall of one end of the fixing cylinder (42). The end of the fixing cylinder (42) away from the filter element (41) is threaded into the connecting ring (12).

5. A vacuum filtration device with replaceable filter plates according to claim 4, characterized in that: A fixing ring (43) is provided on the end face of one end of the fixing cylinder (42). The inner wall of the fixing ring (43) is fixedly connected to the filter element (41). The fixing ring (43) can abut against the end face of the connecting ring (12). The fixing ring (43) has a locking piece (431) protruding on its opposite sides. It also includes a disassembly rod (5), which is provided with a disassembly ring (51). One side of the disassembly ring (51) is fixedly connected to the disassembly rod (5), and the other side is recessed with a slot (511) that engages with the clip (431).

6. The vacuum filtration device with replaceable filter plates according to claim 5, characterized in that: The fixing ring (43) is provided with a sealing ring (44) on the side facing the connecting ring (12).

7. The vacuum filtration device with replaceable filter plates according to claim 4, characterized in that: Both the connecting ring (12) and the fixing cylinder (42) are made of glass.

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