Simple tangential flow filtering device

Abstract

The utility model discloses a simple tangential flow filtering device, which comprises a liquid collecting assembly, a filtering assembly and a driving assembly, the filtering assembly is arranged between the liquid collecting assembly and the driving assembly, the driving assembly comprises a peristaltic pump and a filtering cup, the left side and the right side of the filtering cup are oppositely provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are located on the same horizontal plane. The liquid inlet and the liquid outlet are connected outside the filter cup through a hose, the hose is arranged on a peristaltic pump, and the peristaltic pump provides circulating power for liquid to be filtered in the filter cup; the filter cup is arranged above the filter assembly and is used for containing and adding liquid to be filtered; according to the utility model, the filter cup and the peristaltic pump are arranged on the driving assembly, the filter cup is connected with the peristaltic pump through the hose, and the hose is extruded through rotation of the peristaltic pump to enable the liquid to be filtered to flow in the filter cup, so that impurities in the liquid to be filtered are prevented from depositing on a filter membrane, and the filter efficiency is improved; the replacement frequency of the filtering membrane and the cost required by filtering are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of experimental equipment, and specifically relates to a simple tangential flow filtering device. Background Art

[0002] In product production, analysis and testing, materials and solvents usually need to be filtered before use. Currently, filtration generally uses a vacuum filtration device; a conventional vacuum filtration device includes: a filter cup, a filter head and a liquid collecting bottle; before filtration, the filter cup is fixed to the filter head, and then the lower end of the filter head is connected to the liquid collecting bottle, and then connected to the liquid collecting bottle through a vacuum pump, and filtering is carried out after the vacuum pump is turned on; after the filtration is completed, the filtrate remains in the liquid collecting bottle.

[0003] The filtration method used in conventional vacuum filtration devices is dead-end filtration, which easily causes materials to be blocked on the filter membrane, reducing the filtration speed and increasing the frequency and cost of replacing the filter membrane. Utility Model Content

[0004] The utility model aims to provide a simple tangential flow filtering device, which can make the liquid to be filtered flow to prevent impurities from being deposited on the filtering membrane, reduce the replacement frequency of the filtering membrane, and improve the filtering efficiency.

[0005] The utility model is realized by the following technical solutions:

[0006] A simple tangential flow filtration device comprises a liquid collecting component, a filtering component and a driving component, wherein the filtering component is arranged between the liquid collecting component and the driving component, the driving component comprises a peristaltic pump and a filter cup, and a liquid inlet and a liquid outlet are arranged oppositely on the left and right sides of the filter cup, the liquid inlet and the liquid outlet are located in the same horizontal plane, the liquid inlet and the liquid outlet are connected outside the filter cup by a hose, the hose is arranged on the peristaltic pump, and the peristaltic pump provides circulation power for the liquid to be filtered in the filter cup; the filter cup is arranged above the filtering component, and the filter cup is used to hold and add the liquid to be filtered.

[0007] Furthermore, the filter assembly includes a sand core filter head, a fixing clamp and a filter membrane, the filter membrane is arranged above the sand core filter head, the fixing clamp is arranged between the filter cup and the filter head, and the fixing clamp maintains stability between the filter head and the filter cup.

[0008] Furthermore, the liquid collecting component comprises a liquid collecting cup, which is arranged below the sand core filter head and is plug-fittingly connected to the sand core filter head.

[0009] Furthermore, a frosted opening is provided below the sand core filter head at the position of the liquid collecting cup, and a frosted opening is provided above the liquid collecting cup at the position of the sand core filter head.

[0010] Furthermore, the liquid collecting component also includes a vacuum pump, a mounting hole is provided on one side of the sand core filter head, and the vacuum pump is connected to the mounting hole on the side of the sand core filter head through a pipeline.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] 1) In the utility model, a filter cup and a peristaltic pump are arranged on the driving assembly, and the filter cup and the peristaltic pump are connected by a hose. The peristaltic pump rotates and squeezes the hose to make the liquid to be filtered flow in the filter cup, thereby preventing impurities in the liquid to be filtered from being deposited on the filter membrane, reducing the replacement frequency of the filter membrane, and improving the filtering efficiency.

[0013] 2) In the utility model, the bottom of the sand core filter head and the top of the liquid collecting cup are both frosted openings; a vacuum pump is also connected to the bottom of the sand core filter head, and the sand core filter head and the liquid collecting cup are plug-in connected. The plug-in connection between the frosted openings keeps the sand core filter head and the liquid collecting cup in a relatively sealed state, so that the negative pressure at the filtrate outlet can be kept relatively constant, thereby ensuring the filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the overall structure of the simple tangential flow filtration device of the utility model.

[0016] Among them: 1-filter cup, 2-hose, 3-peristaltic pump, 31-pump head, 4-filter membrane, 5-fixing clamp, 6-sand core filter head, 7-liquid collection cup, 8-vacuum pump. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments.

[0018] Embodiment 1:

[0019] The main structure of this embodiment is a simple tangential flow filtration device, such as Figure 1As shown, it includes a liquid collecting component, a filtering component and a driving component, the filtering component is arranged between the liquid collecting component and the driving component, the driving component includes a peristaltic pump 3 and a filter cup 1, the filter cup 1 is provided with a liquid inlet and a liquid outlet on the left and right sides thereof, the liquid inlet and the liquid outlet are located in the same horizontal plane, the liquid inlet and the liquid outlet are connected outside the filter cup 1 through a hose 2, the hose 2 is arranged on the peristaltic pump 3, the peristaltic pump 3 provides circulation power for the liquid to be filtered in the filter cup 1; the filter cup 1 is arranged above the filtering component, and the filter cup 1 is used for containing and adding the liquid to be filtered.

[0020] The filter assembly is arranged between the liquid collecting assembly and the driving assembly. The liquid to be filtered flows in the driving assembly, passes through the filter assembly, and then reaches the liquid collecting assembly for standby; the driving assembly includes a peristaltic pump 3 and a filter cup 1. The upper and lower ends of the filter cup 1 are both open structures. The filter cup 1 has a liquid inlet and a liquid outlet arranged on the side thereof. The liquid inlet and the liquid outlet are on the same horizontal plane. The liquid inlet and the liquid outlet are connected to each other through a hose 2 outside the filter cup 1. The liquid inlet and the liquid outlet are both arranged on one end of the filter cup 1 close to the filter assembly. The peristaltic pump 3 is arranged on one side of the filter cup 1. A pump head 31 is arranged on the peristaltic pump 3. The hose 2 is embedded in the pump head 31. The pump head 31 rotates clockwise or counterclockwise to squeeze the hose 2, thereby providing flow power for the liquid to be filtered in the hose 2, so that the liquid to be filtered in the filter cup 1 is in a flow state in a certain direction, thereby preventing impurities in the liquid to be filtered from being deposited at the bottom of the filter cup 1 and causing the filter assembly to be blocked.

[0021] Embodiment 2:

[0022] Based on the above embodiments, the present embodiment further defines a filter assembly, which includes a sand core filter head 6, a fixing clamp 5 and a filter membrane 4, wherein the filter membrane 4 is arranged above the sand core filter head 6, and the fixing clamp 5 is arranged between the filter cup 1 and the sand core filter head 6, and the fixing clamp 5 maintains stability between the sand core filter head 6 and the filter cup 1; the sand core filter head 6 has a frosted opening below the liquid collecting cup 7, and the liquid collecting cup 7 has a frosted opening above the sand core filter head 6.

[0023] The filter assembly is arranged below the filter cup 1, and the filter assembly includes a sand core filter head 6, a fixing clip 5, and a filter membrane 4. The filter membrane 4 is arranged above the sand core filter head 6, and the sand core filter head 6 is fixed to the filter cup 1 by the fixing clip 5. The bottom end of the filter cup 1 and the top end of the sand core filter head 6 are matched and connected with the fixing clip 5. The fixing clip 5 keeps the filter cup 1 and the sand core filter head 6 relatively stable. The frosted opening of the sand core filter head 6 above the liquid collection cup 7 and the frosted opening of the liquid collection cup 7 below the sand core filter head 6 are tightly fitted to achieve a sealing effect to prevent leakage. The other parts of this embodiment are the same as the above embodiment, and will not be repeated here.

[0024] Embodiment 3:

[0025] Based on the above embodiments, the present embodiment further defines a liquid collecting component, which includes a liquid collecting cup 7, and the liquid collecting cup 7 is arranged and connected below the sand core filter head 6; the liquid collecting component also includes a vacuum pump 8, and a mounting hole is provided on one side of the sand core filter head 6, and the vacuum pump 8 is connected to the mounting hole on the side of the sand core filter head 6 through a pipeline.

[0026] The liquid collecting component is arranged below the sand core filter head 6, and the liquid collecting component includes a liquid collecting cup 7 and a vacuum pump 8. The liquid collecting cup 7 is provided with a scale for measuring the volume of the liquid after filtration; the top of the liquid collecting cup 7 is matched and connected with the bottom of the sand core filter head 6. After the liquid collecting cup 7 is inserted into the sand core filter head 6, the frosted surface keeps the sand core filter head 6 and the liquid collecting cup 7 in a relatively sealed state; the side wall at the bottom end of the sand core filter head 6 is provided with a mounting hole, and the mounting hole is used to connect the vacuum pump 8. The vacuum pump 8 is connected to the bottom end of the sand core filter head 6 through a pipeline. After the vacuum pump 8 is started, a certain negative pressure will be generated at the filtrate outlet, so that the speed at which the liquid to be filtered can enter the liquid collecting cup 7 is increased, thereby improving the filtration efficiency. The other parts of this embodiment are the same as the above embodiment, and will not be repeated here.

[0027] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. used to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when used. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0028] In addition, if the terms "horizontal" or "vertical" appear in the description of the present invention, it does not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A simple tangential flow filtration device, characterized in that: It includes a liquid collecting component, a filtering component and a driving component, wherein the filtering component is arranged between the liquid collecting component and the driving component, the driving component includes a peristaltic pump and a filter cup, and the filter cup is provided with a liquid inlet and a liquid outlet on the left and right sides thereof, the liquid inlet and the liquid outlet are located in the same horizontal plane, the liquid inlet and the liquid outlet are connected by a hose outside the filter cup, the hose is arranged on the peristaltic pump, and the peristaltic pump provides circulation power for the liquid to be filtered in the filter cup; the filter cup is arranged above the filtering component, and the filter cup is used for containing and adding the liquid to be filtered.

2. The simplified tangential flow filtration device according to claim 1, characterized in that: The filter assembly includes a sand core filter head, a fixing clamp and a filter membrane. The filter membrane is arranged above the sand core filter head. The fixing clamp is arranged between the filter cup and the sand core filter head. The fixing clamp keeps the sand core filter head and the filter cup stable.

3. The simplified tangential flow filtration device according to claim 2, characterized in that: The liquid collecting component comprises a liquid collecting cup, which is arranged below the sand core filter head and is plug-fittedly connected to the sand core filter head.

4. The simplified tangential flow filtration device according to claim 3, characterized in that: The lower part of the sand core filter head at the position of the liquid collecting cup is a frosted opening, and the upper part of the liquid collecting cup at the position of the sand core filter head is also a frosted opening.

5. The simplified tangential flow filtration device according to claim 3, characterized in that: The liquid collecting component also includes a vacuum pump. A mounting hole is provided on one side of the sand core filter head. The vacuum pump is connected to the mounting hole on the side of the sand core filter head through a pipeline.

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