CN205073745U - Stabilize efficient suction filter device - Google Patents

Abstract

The utility model provides a stable and high-efficiency suction filtration device, which comprises a filtrate collection bottle, a suction pipe, a vacuum pump, an inner container, and a hollow top cover. The inner liner is a sealed container with an opening at the upper end. The bottom surface of the inner liner at the lower end of the inner liner is a hollow structure. The mouth of the filtrate collection bottle is screwed to the hollow top cover. The upper end is a connected through hole, and the upper position of the filtrate collection bottle is provided with a suction port, and the suction port is connected with a vacuum pump through a suction pipe. The utility model can lower the center of gravity of the device and improve the stability of the device by designing the liner in the filtrate collection bottle. At the same time, the function of the air suction port and the filtrate discharge port is removed. After the suction and filtration, the suction pipe is removed and the bottle is slightly tilted. body, that is, the filtrate can be discharged through the suction port. This method can easily discharge the filtrate without disassembling the device, which improves the efficiency of suction and filtration.

Description

A stable and efficient suction filtration device

technical field

The utility model relates to an experimental instrument, in particular to a stable and efficient suction filtration device.

Background technique

Studies have shown that the plankton in the water sample will affect the chemical composition of the water, and the insoluble substances in the water sample will also be dissolved due to the influence of the preservation reagent method, affecting the change of the water chemical composition in the water. According to the "Technical Regulations on Preservation and Management of Water Quality Samples" (HJ493-2009), water samples of soluble phosphate and soluble silicate should be filtered on-site when sampling, and water samples of NO ₂ and NO ₃ should be filtered on-site before storage. In this way, there are many other experiments in the laboratory that require the solution to be filtered.

When there are many water samples, the pressure difference between the liquid surface of the solution to be filtered and the liquid surface of the filtrate is caused by the method of suction filtration, which can speed up the filtration efficiency. The graduated funnel for measuring the solution is connected to the filtrate collection bottle at the lower part. The structure of the device is relatively complicated, and the center of gravity of the device is high. Therefore, it is of great significance to design a high-efficiency and stable suction filtration device for the timely filtration of a large number of water samples.

Contents of the invention

The utility model provides a stable and high-efficiency suction filtration device, which can meet the timely filtration of a large number of water samples in a laboratory or on site (especially in the field or on the way of collection), and the device has a simple structure and is easy to use.

A stable and efficient suction filtration device, including a filtrate collection bottle, a suction pipe, and a vacuum pump, characterized in that it also includes an inner tank and a hollow top cover, and the upper opening of the filtrate collection bottle is provided with an inner tank extending into the inner cavity of the filtrate collection bottle , the inner tank is a sealed container with an opening at the upper end, the lower bottom surface of the inner tank at the lower end of the inner tank is a hollow structure, the bottle mouth of the filtrate collection bottle is screwed with the hollow top cover, and the upper surface of the hollow top cover is provided with the inner tank. The upper end of the bile is connected with a through hole, and the upper position of the filtrate collection bottle is provided with a suction port, and the suction port is connected with a vacuum pump through a suction pipe.

In the stable and efficient suction filtration device as described above, the filtrate collection bottle is a glass container with a narrow top and a wide bottom, and the inner tank is a cylindrical glass container with an open upper end. The outer diameter is the same size.

In the stable and high-efficiency suction filtration device as described above, the edge of the mouth of the inner liner at the upper end of the liner protrudes outwards, and the edge of the mouth of the inner liner hangs against the opening edge of the upper end of the filtrate collection bottle.

As mentioned above, the stable and high-efficiency suction filter device is equipped with a rubber gasket with grooves on the inner side of the mouth of the inner tank.

In the stable and high-efficiency suction filtration device described above, the outside of the mouth of the filtrate collection bottle is provided with a bottle mouth thread, and the inside of the hollow top cover is provided with a thread corresponding to the bottle mouth thread of the filtrate collection bottle.

In the above-mentioned stable and efficient suction filtration device, the filter paper is placed on the bottom surface of the inner tank, and the size of the filter paper is consistent with the size of the lower bottom surface of the inner tank.

As mentioned above, the stable and efficient suction filter device, the suction pipe is made of plastic hose.

The utility model can lower the center of gravity of the device and improve the stability of the device by designing the liner in the filtrate collection bottle. At the same time, the function of the air suction port and the filtrate discharge port is removed. After the suction and filtration, the suction pipe is removed and the bottle is slightly tilted. body, that is, the filtrate can be discharged through the suction port. This method can easily discharge the filtrate without disassembling the device, which improves the efficiency of suction and filtration.

Description of drawings

Fig. 1 is a schematic structural view of the stable and efficient suction filtration device of the present invention.

In the figure: 1-inner tank; 2-bottom surface of inner tank; 3-filter paper; 4-edge of inner tank mouth; 5-rubber gasket; 6-filtrate collection bottle; 7-hollow top cover; -exhaust pipe; 10-exhaust port; 11-vacuum pump.

detailed description

The technical solution in the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the utility model.

Fig. 1 shows the structural representation of the stable and efficient suction filtration device of the present utility model, and described stable and efficient suction filtration device comprises liner 1, filtrate collection bottle 6, hollow top cover 7, suction pipe 9, vacuum pump 11, and filtrate collection The upper opening of the bottle 6 is provided with an inner bag 1 extending into the inner cavity of the filtrate collection bottle 6 . The filtrate collection bottle 6 is a glass container with a narrow top and a wide bottom, and the inner bag 1 is a cylindrical glass container with an open upper end. Put the inner tank 1 into the inner chamber of the filtrate collection bottle 6 smoothly.

The lower bottom surface 2 of the inner tank located at the lower end of the inner tank 1 is a hollow structure, and the edge 4 of the inner tank mouth located at the upper end of the inner tank 1 protrudes outward by about 5 mm than the side wall of the inner tank, so that the edge 4 of the inner tank mouth is attached to the filtrate collection bottle 6 Open top edge. The edge 4 of the mouth of the inner tank is provided with a rubber gasket 5 with a groove inside, and the rubber gasket 5 is circular, so as to be buckled on the edge 4 of the mouth of the inner tank conveniently.

The outside of the filtrate collection bottle 6 bottleneck is provided with a bottleneck thread 8, and the inside of the hollow top cover 7 is provided with threads corresponding to the bottleneck thread 8 of the filtrate collection bottle 6, that is, the hollow top cover 7 is connected with the filtrate collection bottle. The bottle mouth of 6 is threaded to realize bottle mouth sealing. The upper surface of the hollow top cover 7 is provided with a through hole. Specifically, a round hole with an inner diameter consistent with the size of the inner diameter of the bottle mouth of the liner 1 can be provided in the middle part of the hollow top cover 7, so as to pass through this hole. Add the solution to be filtered into the liner 1.

Described filtrate collecting bottle 6 bottle bodies upper part position is provided with air extraction port 10, and air extraction port 10 is connected with vacuum pump 11 by air extraction pipe 9, and air extraction pipe 9 can adopt plastic hose to make. The vacuum pump 11 can meet the negative pressure required for suction filtration.

When in use, the liner 1 is wetted first, and the filter paper 3 is placed on the bottom surface 2 of the liner, and the size of the filter paper 3 is consistent with that of the bottom surface 2 of the liner. The size of the pore size of the filter paper 3 is selected according to specific experiments. Wear the grooved rubber gasket 5 on the edge 4 of the inner tank mouth, then put the inner tank 1 into the filtrate collection bottle 6, screw on the hollow top cover 7, so that the inner thread of the hollow top cover 7 can be connected with the filtrate collection bottle 6 The threads of the bottle mouth of the bottle are snapped together, pour the water sample to be filtered into the inner tank 1, connect the suction port 10 and the vacuum pump 11 with the suction pipe 9, start the vacuum pump 11 to carry out suction filtration, and the liquid level of the filtrate will reach the inner tank When lowering the bottom surface 2, close the vacuum pump 11, remove the suction pipe 9, tilt the bottle slightly, and transfer the filtrate from the filtrate collection bottle 6 through the suction port 10.

This suction filtration device has the following advantages:

(1) Designing the liner 1 within the filtrate collection bottle 6 can lower the center of gravity of the device and improve the stability of the device.

(2) The filtrate collection bottle 6 adopts the form of narrow top and wide bottom. Compared with the cylindrical bottle body, it can not only increase the collection amount of filtrate, but also can set the suction port 10 at a position above the bottom surface 2 of the liner to prevent The filtrate enters the suction pipe 9 during the pumping process.

(3) The function of the air suction port 10 and the filtrate discharge port makes the discharge of the filtrate convenient and efficient. When the liquid level of the filtrate is about to reach the lower bottom of the inner tank, stop adding the solution to be filtered, remove the suction pipe 9, and tilt the bottle body slightly, and the filtrate can be discharged through the suction port 10. This method can be conveniently used without disassembling the device. The filtrate is discharged to improve the suction filtration efficiency.

(4) The rubber gasket with grooves can be easily buckled onto the edge 4 of the inner tank 1 to increase the airtightness between the inner tank and the filtrate collection bottle and prevent the inner tank mouth from being hollowed out The top cover 7 is crushed.

(5) design screw thread on the bottleneck of filtrate collecting bottle 6 and hollow top cover 7 inboards, make both can bite together, greatly strengthen the airtightness between the bottleneck of liner mouth and filtrate collecting bottle 6.

(6) The side wall of the liner 1 containing the solution to be filtered is airtight, and the bottom surface 2 of the liner is hollowed out. The hollowed out spaces are small and dense, which is convenient for the filtrate to pass through, and will not cause deformation of the filter paper 3. In addition, the liner 1 is detachable , to facilitate the cleaning of the liner 1 and the filtrate collection bottle 6.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any skilled person in the technical field can easily think of changes within the technical scope disclosed in the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (7)

1. A stable and efficient suction filtration device, comprising a filtrate collection bottle (6), a suction pipe (9), a vacuum pump (11), is characterized in that: also includes an inner bag (1), a hollow top cover (7), a filtrate The upper opening of the collection bottle (6) is provided with an inner tank (1) extending into the inner chamber of the filtrate collection bottle (6), the inner tank (6) is a sealed container with an opening at the upper end, and is positioned at the lower end of the inner tank (1). The bottom surface (2) of the tank is hollowed out, and the mouth of the filtrate collection bottle (6) is threadedly connected with the hollow top cover (7). A through hole with an open opening, the upper position of the filtrate collection bottle (6) is provided with a suction port (10), and the suction port (10) is connected to the vacuum pump (11) through a suction pipe (9). 2. The stable and efficient suction filtration device according to claim 1, characterized in that: the filtrate collection bottle (6) is a glass container with a narrow top and a wide bottom, and the inner tank (6) is a cylindrical glass with an open upper end Container, filtrate collection bottle (6) upper bottle mouth inner diameter size is consistent with the outer diameter size of liner (6) side wall. 3. The stable and high-efficiency suction filtration device according to claim 2, characterized in that: the inner liner opening edge (4) at the upper end of the inner liner (6) protrudes outward, and the inner liner opening edge (4) is attached to the filtrate collection Bottle (6) upper end opening edge. 4. The stable and efficient suction filter device according to claim 3, characterized in that: the edge (4) of the inner tank mouth is covered with a rubber gasket (5) with a groove inside. 5. The stable and efficient suction filtration device according to claim 1, characterized in that: the outside of the filtrate collection bottle (6) bottleneck is provided with a bottleneck thread (8), and the inside of the hollow top cover (7) is provided with a The thread corresponding to the bottleneck thread (8) of the filtrate collection bottle (6). 6. The stable and efficient suction filtration device according to claim 1, characterized in that: filter paper (3) is placed on the lower bottom surface (2) of the inner container, and the size of the filter paper (3) is consistent with the size of the lower bottom surface (2) of the inner container . 7. The stable and efficient suction filtration device according to claim 1, characterized in that: the suction pipe (9) is made of plastic hose.