Automatic suction filtration device with drainage function

Abstract

The utility model discloses an automatic suction filtration device with a liquid discharge function, which comprises a suction filtration bottle, a bottle plug is mounted at an opening of the suction filtration bottle, and a sand core funnel is inserted into the bottle plug; a sealing cover is arranged at the top of the sand core funnel, a liquid inlet is formed in the outer side surface of the sand core funnel, and the liquid inlet is communicated to a beaker through a right-angle glass tube; a vacuum pump is connected to the side surface, close to the opening, of the suction flask through a rubber pipe; the bottom of the suction flask is communicated with a waste liquid collecting device; wherein the beaker is used for placing an experimental solution; and the vacuum pump is used for vacuumizing the suction flask, so that the experimental solution in the beaker is sucked into the suction flask after being filtered by the sand core funnel. The problems that an existing suction filtration device is complex in operation and low in detection efficiency are solved.

Description

[Technical field]

[0001] The utility model belongs to the technical field of analytical chemistry experimental equipment, and in particular relates to an automatic suction filtration device with a liquid discharge function. [Background technology]

[0002] Accelerators, antioxidants and other chemical materials are widely used as processing aids in rubber product processing, which can effectively improve the hardness and life of rubber products. These chemical materials have extremely high purity requirements, and the impurity content is usually confirmed by testing the content of insoluble matter. Each additive has a corresponding organic solvent to dissolve it and test the content of insoluble matter.

[0003] The existing determination of insoluble content requires dissolution, filtration and other processes. The sample is dissolved, and then the dissolved sample is transferred to the sand core funnel in multiple times with a beaker, and then the filtration operation is performed. The solution is filtered through the sand core funnel, and the insoluble impurities and other insolubles are stored on the sand core. The waste liquid generated during the filtration process enters the filtration bottle. When the waste liquid reaches the water level, it is necessary to remove the bottle stopper and the sand core funnel, pour out the waste liquid in the filtration bottle, and then cover the bottle stopper and the sand core funnel to continue filtration.

[0004] During the experiment, manual operations are complicated and the filtration process is cumbersome. The experimenter needs to manually take the glass cup many times to transfer the solution to the sand core and frequently remove the bottle stopper to transfer the waste liquid. The detection efficiency is low, the error is large, and the repeatability and reproducibility of the test results are poor. Most organic solvents and waste liquids are toxic. Long-term filtration operations and frequent transfer of waste liquids are not environmentally friendly. [Contents of the utility model]

[0005] The utility model aims to provide an automatic suction filtration device with a liquid discharge function to solve the problems of complex operation and low detection efficiency of the existing suction filtration device.

[0006] The utility model adopts the following technical scheme: an automatic suction filtration device with a liquid discharge function, comprising a suction filtration bottle, a bottle plug is installed at the opening of the suction filtration bottle, and a sand core funnel is inserted into the bottle plug; a sealing cover is provided on the top of the sand core funnel, and a liquid inlet is provided on the outer side of the sand core funnel, and the liquid inlet is connected to a beaker through a right-angle glass tube; a vacuum pump is connected to the side of the suction filtration bottle near the opening through a rubber tube; a waste liquid collection device is provided at the bottom of the suction filtration bottle;

[0007] The beaker is used for placing the experimental solution; the vacuum pump is used for evacuating the suction filtration bottle so as to filter the experimental solution in the beaker through the sand core funnel and then suck it into the suction filtration bottle.

[0008] Furthermore, the waste liquid collecting device comprises a waste liquid bottle, a waste liquid outlet is arranged at the bottom of the suction filter bottle, and the waste liquid outlet is connected to the waste liquid bottle through a valve.

[0009] Further, the bottom of the beaker was placed on a tray of a magnetic stirrer.

[0010] Furthermore, the suction port of the right-angle glass tube is placed at the bottom of the beaker, and the discharge port of the right-angle glass tube is connected to the liquid inlet of the sand core funnel through a rubber tube.

[0011] The beneficial effects of the utility model are as follows: by adding a sealing cover to the top of the sand core funnel, opening a liquid inlet on one side of the sand core funnel, connecting the liquid inlet with a right-angle glass tube with a rubber tube, placing the right-angle glass tube in the solution to be filtered, and turning on the vacuum pump to achieve automatic filtration and sampling, it is avoided that the operator manually takes the glass cup to transfer the solution to be filtered to the sand core funnel many times, which is easy to lose the sample, contaminate the sample, and cause inaccurate results. By arranging a waste liquid collection device at the bottom of the suction filtration bottle and adjusting the valve to achieve the drainage speed during the filtration process, it is avoided that the operator frequently pulls out the rubber bottle stopper with the sand core funnel to transfer the waste liquid, which contaminates the sample and causes the result to be high.

Brief Description of the Drawings

[0012] Figure 1 The utility model is a structural schematic diagram of an automatic suction filtration device with a liquid discharge function.

[0013] Among them, 1. filtration bottle, 2. sand core funnel, 3. sealing cover, 4. right-angle glass tube, 5. beaker, 6. bottle stopper, 7. rubber tube, 8. vacuum pump, 9. waste liquid bottle, 10. valve, 11. magnetic stirrer. [Specific implementation method]

[0014] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0015] The utility model provides an automatic suction filtration device with a liquid discharge function, such as Figure 1 As shown, it includes a suction filtration bottle 1, a rubber bottle stopper 6 with holes is installed at its opening, and a sand core funnel 2 is inserted into the bottle stopper 6; a sealing cover 3 is provided on the top of the sand core funnel 2, and a liquid inlet is provided on the outer side of the sand core funnel, and the liquid inlet is connected to a beaker 5 through a right-angle glass tube 4; a vacuum pump 8 is connected to the side of the suction filtration bottle 1 near the opening through a rubber tube 7; and a waste liquid collection device is provided at the bottom of the suction filtration bottle 1.

[0016] The beaker 5 is used to place the experimental solution; the vacuum pump 8 is used to evacuate the suction filtration bottle 1 so that the experimental solution in the beaker 5 is filtered through the sand core funnel 2 and then sucked into the suction filtration bottle 1.

[0017] In some embodiments, the waste liquid collection device includes a waste liquid bottle 9, and the bottom of the suction filtration bottle 1 is provided with a waste liquid outlet, which is connected to the waste liquid bottle 9 through a valve 10. The waste liquid collection device eliminates the cumbersome steps of removing the bottle stopper to dump the waste liquid every time.

[0018] In some embodiments, the bottom of the beaker 5 is placed on a tray of a magnetic stirrer 11 , and the magnetic stirrer 11 is provided with a timing device.

[0019] In some embodiments, the suction port of the right-angle glass tube 4 is placed at the bottom of the beaker 5, and the discharge port of the right-angle glass tube 4 is connected to the liquid inlet of the sand core funnel 2 through a rubber tube. This ensures that the liquid in the beaker 5 is completely filtered as much as possible.

[0020] The method for using the automatic suction filtration device with liquid discharge function of the utility model is as follows:

[0021] Weigh the sand core funnel that has been dried and weighed in advance, insert the sand core funnel into the rubber stopper with holes, and insert the rubber stopper into the suction filtration bottle for later use;

[0022] Weigh the sample, pour the weighed sample into beaker 5, add the corresponding solvent to dissolve the sample;

[0023] Place the beaker 5 on the tray of the magnetic stirrer 11 which can be timed, turn on the switch of the magnetic stirrer 11, adjust the stirring speed, turn on the magnetic stirrer and stir for 40 minutes;

[0024] When the stirring work stops, the vacuum pump 8 is turned on to automatically suck the dissolved sample from the beaker 5, and the filtration work begins;

[0025] After the inhaled sample is filtered through the sand core funnel, the waste liquid flows to the bottom of the suction filter bottle 1;

[0026] When the waste liquid in the suction filtration bottle reaches a certain amount, open the valve 10, and the waste liquid flows out from the valve 10 and is collected in the waste liquid bottle 9. When the waste liquid bottle 9 is full, close the valve 10, transfer the waste liquid out, and then connect the waste liquid bottle 9 back;

[0027] Finally, insoluble impurities and other insoluble substances are stored on the sand core of the sand core funnel 2, the sand core funnel 2 and the sample on the sand core funnel 2 are dried, and the mass of the sand core funnel 2 plus the insoluble substances is weighed.

[0028] The utility model provides an automatic suction filtration device with a drainage function. A sealing cover is added to the top of a sand core funnel, a liquid inlet is opened on one side of the sand core funnel, the liquid inlet is connected to a right-angle glass tube with a rubber tube, the right-angle glass tube is placed in the solution to be filtered, and a vacuum pump is turned on to achieve automatic suction filtration and sampling, thereby avoiding the operator manually taking a glass cup to transfer the solution to be filtered to the sand core funnel many times, which is easy to lose samples, contaminate samples, and cause inaccurate results. A waste liquid collection device is set at the bottom of the suction bottle, and the valve is adjusted to achieve the drainage speed during the suction filtration process, thereby avoiding the operator frequently pulling out the rubber bottle stopper with the sand core funnel to transfer waste liquid, which contaminates the sample and causes the result to be high.

Claims

1. An automatic suction filtration device with drainage function, characterized in that: The invention comprises a suction filter bottle (1), the opening of which is provided with a bottle stopper (6), a sand core funnel (2) is inserted into the bottle stopper (6); a sealing cover (3) is provided on the top of the sand core funnel (2), a liquid inlet is provided on the outer side of the sand core funnel, and the liquid inlet is connected to a beaker (5) through a right-angle glass tube (4); a vacuum pump (8) is connected to the side of the suction filter bottle (1) near the opening through a rubber tube (7); and a waste liquid collection device is provided at the bottom of the suction filter bottle (1); The beaker (5) is used to place the experimental solution; the vacuum pump (8) is used to evacuate the suction filtration bottle (1) so that the experimental solution in the beaker (5) is filtered through the sand core funnel (2) and then sucked into the suction filtration bottle (1).

2. The automatic suction filtration device with drainage function according to claim 1, characterized in that: The waste liquid collection device comprises a waste liquid bottle (9), and a waste liquid outlet is provided at the bottom of the suction filter bottle (1), and the waste liquid outlet is connected to the waste liquid bottle (9) through a valve (10).

3. An automatic suction filtration device with drainage function as claimed in claim 1 or 2, characterized in that: The bottom of the beaker (5) is placed on the tray of the magnetic stirrer (11).

4. An automatic suction filtration device with drainage function as claimed in claim 1 or 2, characterized in that: The suction port of the right-angle glass tube (4) is placed at the bottom of the beaker (5), and the discharge port of the right-angle glass tube (4) is connected to the liquid inlet of the sand core funnel (2) through a rubber tube.

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