Suction filtration device

Abstract

The utility model discloses a suction filtration device which comprises a funnel, a suction filtration cover and a suction filtration bottle, the funnel is arranged above the suction filtration cover, the lower end of the suction filtration cover covers the bottle opening of the suction filtration bottle, one side end of the suction filtration cover is provided with a suction opening, and the lower end of the suction filtration cover is provided with a liquid guide pipe. A liquid inlet pipe, a first liquid distribution pipe, a second liquid distribution pipe, a first liquid collection bottle, a second liquid collection bottle, a first folding baffle, a second folding baffle and a controller are arranged in the suction filtration bottle, the upper end of the liquid inlet pipe is connected with the liquid guide pipe, the first liquid distribution pipe and the second liquid distribution pipe are symmetrically arranged at the lower end of the liquid inlet pipe, the first liquid collection bottle is arranged at the lower end of the first liquid distribution pipe, and the second liquid collection bottle is arranged at the lower end of the second liquid distribution pipe. The second liquid collection bottle is arranged at the lower end of the second liquid distribution pipe, the first folding baffle is arranged at the joint of the liquid inlet pipe and the first liquid distribution pipe, the second folding baffle is arranged at the joint of the liquid inlet pipe and the second liquid distribution pipe, and the first folding baffle and the second folding baffle are both electrically connected with the controller. The controller controls folding or unfolding of the first folding baffle and the second folding baffle.

Description

Technical Field

[0001] This utility model relates to the field of vacuum filtration flask technology, and specifically to a vacuum filtration device. Background Technology

[0002] A suction flask, also known as a Buchner flask, is a type of glass funnel filtration flask used in laboratories. It is typically used in conjunction with a Buchner funnel for filtration. Similar in shape to a conical flask, it has a side connection at the opening for connecting a vacuum pump. When the Buchner funnel is attached to the suction flask for filtration, the vacuum pump is turned on to reduce the air pressure inside the flask. Under the influence of atmospheric pressure and gravity, the solution in the Buchner funnel flows through the filter paper into the suction flask below, while the remaining solids remain on the filter paper, thus achieving filtration.

[0003] Chinese patent CN220432397U discloses a waste liquid discharge structure for a vacuum filtration flask, including a vacuum filtration flask body. An upper nozzle is located on one side wall of the flask body, and a lower nozzle is located on the side wall away from the upper nozzle. A collection pipe is located at the bottom of the flask body. A cavity is formed inside the collection tank, and a partition plate is installed inside the collection tank. The collection tank is divided into a filtration chamber and a collection chamber from top to bottom by the partition plate. An inlet pipe communicating with the filtration chamber is located on one side wall of the collection tank. A connecting hose is inserted into one end of the lower nozzle, and one end of the connecting hose is connected to the inlet pipe. This waste liquid discharge structure for a vacuum filtration flask, by setting up the partition plate, filtration chamber, and collection chamber, simultaneously discharges and collects the waste liquid produced during the operation of the vacuum filtration flask body, achieving a filtration effect. However, this method has the disadvantage of insufficient filtration, and the initial filtrate can contaminate the collected liquid. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the problems existing in the prior art and provide a vacuum filtration device. This vacuum filtration device has the advantages of simple, convenient and time-saving operation. By separating the initial filtrate from the required filtrate, the filtered sample is prevented from being disturbed, thus ensuring the purity of the filtered sample.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A filtration device includes a funnel, a filtration cover, and a filtration flask. The funnel is positioned above the filtration cover, and the lower end of the filtration cover covers the mouth of the filtration flask. One side of the filtration cover has an air extraction port, and the lower end of the filtration cover has a liquid guide tube extending into the filtration flask. The filtration flask contains an inlet pipe, a first dispensing pipe, a second dispensing pipe, a first collecting bottle, a second collecting bottle, a first folding baffle, a second folding baffle, and a controller. The upper end of the inlet pipe is connected to the liquid guide tube. The first and second dispensing tubes are symmetrically arranged at the lower end of the inlet tube and are both connected to the inlet tube. The first collection bottle is located at the lower end of the first dispensing tube, and the second collection bottle is located at the lower end of the second dispensing tube. The first folding baffle is located at the connection between the inlet tube and the first dispensing tube, and the second folding baffle is located at the connection between the inlet tube and the second dispensing tube. Both the first and second folding baffles are electrically connected to the controller, and the controller controls the folding or unfolding of the first and second folding baffles.

[0007] Furthermore, the upper end of the filter cover is provided with a through hole, and the tip of the funnel passes through the through hole so that the funnel is positioned above the filter cover.

[0008] Furthermore, the air extraction port is connected to an air pump via a pipe.

[0009] Furthermore, both the first folding baffle and the second folding baffle are composed of two semi-circular baffles of the same area.

[0010] Furthermore, when the controller controls the first folding baffle to fold and the second folding baffle to unfold, one of the semicircular baffles of the first folding baffle overlaps with the other semicircular baffle, connecting the inlet pipe and the first dispensing pipe. One of the semicircular baffles of the second folding baffle lies flat with the other semicircular baffle, closing the inlet pipe and the second dispensing pipe. This allows the filtered liquid to sequentially enter the first collection bottle through the inlet pipe and the first dispensing pipe.

[0011] Furthermore, when the controller controls the second folding baffle to fold and controls the first folding baffle to unfold, one of the semicircular baffles of the second folding baffle overlaps with the other semicircular baffle, so that the inlet pipe and the second dispensing pipe are connected. One of the semicircular baffles of the first folding baffle lies flat with the other semicircular baffle, so that the inlet pipe and the first dispensing pipe are closed, so that the filtered liquid enters the second collection bottle in sequence through the inlet pipe and the second dispensing pipe.

[0012] Furthermore, when the second folding baffle is in the unfolded state, the cross-sectional area of ​​one of the semicircular baffles and the other semicircular baffle laid flat is the same as the cross-sectional area of ​​the second liquid separator.

[0013] Furthermore, when the first folding baffle is in the unfolded state, the cross-sectional area of ​​one of the semicircular baffles and the other semicircular baffle laid flat is the same as the cross-sectional area of ​​the first liquid separator.

[0014] Furthermore, the filtration flask is also provided with a fixing base and a connecting pipe. The fixing base is located at the bottom inside the filtration flask and is used to fix the first collection bottle and the second collection bottle. One end of the connecting pipe is connected to the lower end of the liquid guide pipe, and the other end of the connecting pipe is connected to the upper end of the liquid inlet pipe, for connecting the liquid guide pipe and the liquid inlet pipe.

[0015] Furthermore, the inner wall of the filtration bottle mouth and the outer wall of the lower end of the filtration cover are both frosted, the filtration bottle is made of transparent material, and the funnel, filtration cover, liquid guide tube, liquid inlet tube, first liquid separator, second liquid separator, first liquid collection bottle and second liquid collection bottle are all made of corrosion-resistant material.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This invention, by setting up a first dispensing tube, a second dispensing tube, a first collecting bottle, a second collecting bottle, a first folding baffle, a second folding baffle, and a controller, controls the folding or unfolding of the first and second folding baffles to achieve the separation of the initial filtrate and the desired filtrate. It can complete the separation of the initial filtrate and the desired filtrate without disassembling the filtration device, thus avoiding interference of the initial filtrate with the sample. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the semi-circular baffles in the overlapping state in this utility model;

[0020] Figure 3 This is a schematic diagram of the semi-circular baffle in a flat state in this utility model.

[0021] The attached figures are labeled as follows: 1-funnel, 2-filtration cover, 3-filtration flask, 4-air extraction port, 5-liquid guide tube, 6-liquid inlet tube, 7-first separating tube, 8-second separating tube, 9-first collecting bottle, 10-second collecting bottle, 11-first folding baffle, 12-second folding baffle, 13-semi-circular baffle, 14-fixed base, 15-connecting tube. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] Example

[0024] like Figure 1-3 As shown, this embodiment discloses a vacuum filtration device, including a funnel 1, a vacuum filtration cover 2, and a vacuum filtration bottle 3. The funnel 1 is positioned above the vacuum filtration cover 2, and the lower end of the vacuum filtration cover 2 covers the mouth of the vacuum filtration bottle 3. A suction port 4 is provided on one side of the vacuum filtration cover 2, and a liquid guide tube 5 extending into the vacuum filtration bottle 3 is provided at the lower end of the vacuum filtration cover 2. The vacuum filtration bottle 3 contains an inlet pipe 6, a first dispensing pipe 7, a second dispensing pipe 8, a first collecting bottle 9, a second collecting bottle 10, a first folding baffle 11, a second folding baffle 12, and a controller. The upper end of the inlet pipe 6 is connected to the liquid guide tube 5. The first dispensing pipe 7 and the second dispensing pipe 8 are symmetrically arranged at the lower end of the inlet pipe 6 and are both connected to the inlet pipe 6. The first collection bottle 9 is located at the lower end of the first dispensing pipe 7, and the second collection bottle 10 is located at the lower end of the second dispensing pipe 8. The first folding baffle 11 is located at the connection between the inlet pipe 6 and the first dispensing pipe 7, and the second folding baffle 12 is located at the connection between the inlet pipe 6 and the second dispensing pipe 8. The first folding baffle 11 and the second folding baffle 12 are both electrically connected to the controller, and the controller controls the folding or unfolding of the first folding baffle 11 and the second folding baffle 12.

[0025] Furthermore, the upper end of the filter cover 2 is provided with a through hole, and the tip of the funnel 1 passes through the through hole so that the funnel 1 is positioned above the filter cover 2.

[0026] Furthermore, the air extraction port 4 is connected to an air extraction pump via a pipe.

[0027] Furthermore, both the first folding baffle 11 and the second folding baffle 12 are composed of two semi-circular baffles 13 with the same area.

[0028] Furthermore, when the controller controls the first folding baffle 11 to fold and the second folding baffle 12 to unfold, one of the semicircular baffles 13 of the first folding baffle 11 overlaps with the other semicircular baffle 13, connecting the inlet pipe 6 and the first dispensing pipe 7. Meanwhile, one of the semicircular baffles 13 of the second folding baffle 12 lies flat with the other semicircular baffle 13, closing the inlet pipe 6 and the second dispensing pipe 8. This allows the filtered liquid to sequentially pass through the inlet pipe 6 and the first dispensing pipe 7 into the first collection bottle 9. Through this configuration, the initial filtrate and the desired filtrate can be separated without disassembling and washing the filtration device.

[0029] Furthermore, when the controller controls the second folding baffle 12 to fold and the first folding baffle 11 to unfold, one of the semicircular baffles 13 of the second folding baffle 12 overlaps with the other semicircular baffle 13, connecting the inlet pipe 6 and the second dispensing pipe 8. Meanwhile, one of the semicircular baffles 13 of the first folding baffle 11 lies flat with the other semicircular baffle 13, closing the inlet pipe 6 and the first dispensing pipe 7. This allows the filtered liquid to sequentially enter the second collection bottle 10 through the inlet pipe 6 and the second dispensing pipe 8. Through this configuration, the filtration device achieves a flow separation effect via the first dispensing pipe 7, the second dispensing pipe 8, the first folding baffle 11, and the second folding baffle 12. The initial filtrate and the desired filtrate can enter specific collection bottles through different pipes, ensuring that the desired filtrate is not interfered with by the initial filtrate and guaranteeing the accuracy and purity of the sample.

[0030] Furthermore, when the second folding baffle 12 is in the unfolded state, the cross-sectional area of ​​one of the semicircular baffles 13 and the other semicircular baffle 13 laid flat is the same as the cross-sectional area of ​​the second dispensing pipe 8. This arrangement prevents the initial filtrate from flowing through the second dispensing pipe 8 into the second collection bottle 10, ensuring that the initial filtrate sequentially passes through the inlet pipe 6 and the first dispensing pipe 7 into the first collection bottle 9, thus achieving the separation of the initial filtrate from the desired filtrate.

[0031] Furthermore, when the first folding baffle 11 is in the unfolded state, the cross-sectional area of ​​one of the semi-circular baffles 13 and the other semi-circular baffle 13 laid flat is the same as the cross-sectional area of ​​the first dispensing pipe 7. This arrangement prevents the desired filtrate from flowing through the first dispensing pipe 7 into the first collecting bottle 9, ensuring that the desired filtrate sequentially enters the second collecting bottle 10 through the inlet pipe 6 and the second dispensing pipe 8, thus achieving the separation of the initial filtrate and the desired filtrate.

[0032] Furthermore, the filtration flask 3 is also provided with a fixing base 14 and a connecting pipe 15. The fixing base 14 is located at the bottom inside the filtration flask 3 and is used to fix the first collecting bottle 9 and the second collecting bottle 10. One end of the connecting pipe 15 is connected to the lower end of the liquid guiding pipe 5, and the other end of the connecting pipe 15 is connected to the upper end of the liquid inlet pipe 6, for connecting the liquid guiding pipe 5 and the liquid inlet pipe 6. By providing the fixing base 14, it can be ensured that the first collecting bottle 9 and the second collecting bottle 10 are stably placed on the filtration flask 3, thereby preventing the first collecting bottle 9 and the second collecting bottle 10 from tipping over due to external forces.

[0033] Furthermore, the inner wall of the filtration bottle 3 at its opening and the outer wall of the lower end of the filtration cover 2 are both frosted. The filtration bottle 3 is made of transparent material. The funnel 1, filtration cover 2, liquid guide tube 5, liquid inlet tube 6, first dispensing tube 7, second dispensing tube 8, first collecting bottle 9, and second collecting bottle 10 are all made of corrosion-resistant material. The frosted surface allows the filtration cover 2 to securely close to the opening of the filtration bottle 3, improving the airtightness of the filtration device and increasing filtration efficiency. The transparent material of the filtration bottle 3 facilitates observation of the filtration process inside, allowing for the control of folding or unfolding of the first folding baffle 11 and the second folding baffle 12 as needed. The use of corrosion-resistant materials makes it suitable for filtering various liquids, expanding the application scenarios of this filtration device.

[0034] The specific working process of this utility model:

[0035] (1) Installation: First, insert the tip of the funnel 1 into the through hole of the filter cover 2 to install the funnel 1 on top of the filter cover 2. Then, cover the lower end of the filter cover 2 with the mouth of the filter bottle 3. Finally, connect the air extraction port 4 to the external air pump through the pipe to complete the installation of the filter device.

[0036] (2) The first folding baffle 11 is folded and the second folding baffle 12 is unfolded by the controller. Then the external air pump is turned on to make the filtration device form a negative pressure state. Under the negative pressure state, the initial filtrate passes through the funnel 1, the filtration cover 2, the liquid guide tube 5, the connecting tube 15, the liquid inlet tube 6 and the first liquid separator 7 in sequence and enters the first collection bottle 9 to complete the collection of the initial filtrate.

[0037] (3) By observing the collection of the initial filtrate, the controller controls the second folding baffle 12 to fold and the first folding baffle 11 to unfold, so that the required filtrate passes through the funnel 1, the suction cover 2, the liquid guide pipe 5, the connecting pipe 15, the liquid inlet pipe 6 and the second liquid separator 8 in sequence, and enters the second oil receiving plate 10 to complete the collection of the required filtrate.

[0038] (4) By observing the collection of the required filtrate, turn off the air pump, depressurize the filtration device, and complete the filtration work.

[0039] The technical solutions provided by the embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of this utility model. The description of the above embodiments is only for helping to understand the principles of the embodiments of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A filtration device, characterized in that: The device includes a funnel, a filtration cap, and a filtration flask. The funnel is positioned above the filtration cap, and the lower end of the filtration cap covers the mouth of the filtration flask. One side of the filtration cap has an air extraction port. The lower end of the filtration cap has a liquid guide tube extending into the filtration flask. The filtration flask contains an inlet pipe, a first dispensing pipe, a second dispensing pipe, a first collecting bottle, a second collecting bottle, a first folding baffle, a second folding baffle, and a controller. The upper end of the inlet pipe is connected to the liquid guide tube. The first and second dispensing pipes are symmetrically positioned at the lower end of the inlet pipe and are both connected to it. The first collecting bottle is located at the lower end of the first dispensing pipe, and the second collecting bottle is located at the lower end of the second dispensing pipe. The first folding baffle is located at the connection between the inlet pipe and the first dispensing pipe, and the second folding baffle is located at the connection between the inlet pipe and the second dispensing pipe. Both the first and second folding baffles are electrically connected to the controller, which controls the folding or unfolding of the first and second folding baffles.

2. The filtration device according to claim 1, characterized in that: The upper end of the filter cover is provided with a through hole, and the tip of the funnel passes through the through hole so that the funnel is positioned above the filter cover.

3. The filtration device according to claim 1, characterized in that: The air extraction port is connected to the air pump via a pipe.

4. The filtration device according to claim 1, characterized in that: Both the first and second folding baffles are composed of two semi-circular baffles of the same area.

5. A filtration device according to claim 4, characterized in that: When the controller controls the first folding baffle to fold and the second folding baffle to unfold, one of the semicircular baffles of the first folding baffle overlaps with the other semicircular baffle, connecting the inlet pipe and the first dispensing pipe. One of the semicircular baffles of the second folding baffle lies flat with the other semicircular baffle, closing the inlet pipe and the second dispensing pipe. This allows the filtered liquid to enter the first collection bottle sequentially through the inlet pipe and the first dispensing pipe.

6. A filtration device according to claim 4, characterized in that: When the controller controls the second folding baffle to fold and controls the first folding baffle to unfold, one of the semicircular baffles of the second folding baffle overlaps with the other semicircular baffle, so that the inlet pipe and the second dispensing pipe are connected. One of the semicircular baffles of the first folding baffle lies flat with the other semicircular baffle, so that the inlet pipe and the first dispensing pipe are closed. The filtered liquid enters the second collection bottle in sequence through the inlet pipe and the second dispensing pipe.

7. A filtration device according to claim 5, characterized in that: When the second folding baffle is in the unfolded state, the cross-sectional area of ​​one of the semicircular baffles and the other semicircular baffle laid flat is the same as the cross-sectional area of ​​the second dispensing tube.

8. A filtration device according to claim 6, characterized in that: When the first folding baffle is in the unfolded state, the cross-sectional area of ​​one of the semicircular baffles and the other semicircular baffle laid flat is the same as the cross-sectional area of ​​the first dispensing tube.

9. A filtration device according to claim 1, characterized in that: The filtration flask is also provided with a fixing base and a connecting pipe. The fixing base is located at the bottom inside the filtration flask and is used to fix the first collection bottle and the second collection bottle. One end of the connecting pipe is connected to the lower end of the liquid guide pipe, and the other end of the connecting pipe is connected to the upper end of the liquid inlet pipe, and is used to connect the liquid guide pipe and the liquid inlet pipe.

10. A filtration device according to claim 9, characterized in that: The inner wall of the filtration bottle mouth and the outer wall of the lower end of the filtration cover are both frosted. The filtration bottle is made of transparent material. The funnel, filtration cover, liquid guide tube, liquid inlet tube, first liquid separator, second liquid separator, first liquid collection bottle and second liquid collection bottle are all made of corrosion-resistant material.

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