Laboratory water sample suction filtration device

Abstract

The utility model discloses a laboratory water sample suction filtration device which comprises a suction filtration bottle, the upper portion of the suction filtration bottle is in butt joint with a liquid receiving hopper, the liquid receiving hopper is communicated with a vacuum pump through an exhaust pipe, the upper end of the liquid receiving hopper is in butt joint with a water inlet assembly through a fixing clamp, and a filter membrane is installed at the butt joint position of the liquid receiving hopper and the water inlet assembly. The lower end of the water inlet assembly is obliquely arranged relative to the horizontal plane, a water outlet is formed in the bottom of the suction filtration bottle and externally connected with a water outlet pipe, and the water outlet pipe is sleeved with a second spring clamp. According to the laboratory water sample suction filtration device disclosed by the utility model, two water inlet assemblies are designed according to the quantity of actually required suction filtration water samples and are respectively matched with the liquid receiving hopper and the suction filtration bottle for use, and the water inlet assemblies with more water samples are matched with the filter membranes with smaller sizes through inclined arrangement of the butt joint parts with the top of the liquid receiving hopper and matching of the water inlet assemblies with less water samples and the filter membranes with smaller sizes; the device has the advantages of simple structure, low manufacturing cost, high suction filtration efficiency and high water sample utilization rate.

Description

Technical Field

[0001] The utility model belongs to the technical field of laboratory instruments, and in particular relates to a laboratory water sample extraction and filtration device. Background Art

[0002] Suction filtration is a physical separation technology that is widely used in chemical experiments, industrial production, environmental protection and other fields. It is to make the liquid-solid two-phase mixture flow through a porous medium such as a filter membrane under the action of an external driving force, so that the solid particles are trapped and the liquid flows out through the pores of the medium, thereby achieving the purpose of liquid-solid two-phase separation. The driving force of the flow process is the pressure difference acting on both sides of the filter medium. It is provided by gravity (liquid level difference), vacuum, pressurization or centrifugal inertial force to overcome the resistance of the flow process. In the existing suction filtration device, since the contact part between the water inlet and the filter membrane is horizontal, when there are more water samples, the suction filtered water sample will be filtered through the filter membrane to intercept impurities, but the impurity concentration is too high and concentrated on the filter membrane, which will cause the liquid to be unable to be filtered in time, and when there are fewer water samples, the water sample is easily excessively absorbed by the filter membrane, and it is also impossible to filter in time. Utility Model Content

[0003] The utility model aims to provide a laboratory water sample extraction and filtration device, which solves the problem in the prior art that liquid cannot be extracted and filtered in time.

[0004] The technical scheme adopted by the utility model is a laboratory water sample filtration device, comprising a filtration bottle, a liquid receiving bucket connected to the upper part of the filtration bottle, the liquid receiving bucket is connected to a vacuum pump through an air suction pipe, the upper end of the liquid receiving bucket is connected to a water inlet assembly through a fixed clamp, a filter membrane is installed at the joint between the liquid receiving bucket and the water inlet assembly, the size of the filter membrane is consistent with the caliber of the lower end of the water inlet assembly, the lower end of the water inlet assembly is inclined relative to the horizontal plane, a water outlet is provided at the bottom of the filtration bottle, the water outlet is externally connected to a water outlet pipe, and a second spring clip is provided on the outer sleeve of the water outlet pipe.

[0005] The utility model is also characterized in that:

[0006] One structure of a water inlet assembly is: it includes a first cylinder with openings at both ends, the lower end of the first cylinder is connected to a first diverter, the lower end of the first diverter is open and is inclined relative to the horizontal plane, a drain outlet is provided at the lowest point of the inclined edge of the first diverter, the drain outlet is connected to a drain pipe, and a first spring clip is provided outside the drain pipe.

[0007] Another structure of the water inlet assembly is: it includes a second cylinder, the upper end of the second cylinder is concave, the lower end of the second cylinder is connected to the second diverter, the center position of the second cylinder is provided with an axial hole that passes through the second cylinder and the second diverter, and the lower end of the second diverter is open and inclined relative to the horizontal plane.

[0008] The structure of the liquid receiving funnel is: it includes a funnel, a filter screen is arranged on the top of the funnel, a connecting cover is sleeved on the outside of the branch pipe at the lower end of the funnel, the connecting cover is fixedly connected to the upper part of the suction filter bottle, a suction port is opened on the side wall of the connecting cover, a suction pipe is connected to the outside of the suction port, and the suction pipe, the connecting cover and the inside of the suction filter bottle are connected.

[0009] The filtering accuracy of the filter mesh is 0.05cm~0.1cm.

[0010] The lower end of the water inlet assembly is inclined at 20 to 40 degrees with respect to the horizontal plane along the drainage direction of the drainage outlet.

[0011] The suction filtration bottle is fixed on the upper surface of the laboratory bench through a fixing frame.

[0012] The beneficial effects of the utility model are:

[0013] The utility model of the laboratory water sample filtration device is designed with two water inlet components according to the actual amount of water samples to be filtered, which are respectively used with a liquid receiving bucket and a filter bottle. For the water inlet component with multiple water samples, the filtration rate is accelerated by setting the inclined joint with the top of the liquid receiving bucket, so that the part with higher impurity content in the sample is concentrated near the drain outlet, thereby improving the filtration efficiency on the other side. When the actual filtration efficiency is low, the part with higher impurity content in the sample is discharged by loosening the first spring clip on the drain pipe connected to the drain outlet, and the water sample is filtered through the filter membrane. After the filtration is completed, the second spring clip on the water outlet pipe at the bottom of the filter bottle is loosened to discharge the sample. For the water inlet component with less water samples, it is matched with a filter membrane of smaller size to save water samples and improve the experimental accuracy. The device effectively solves the problems of the existing filtration device that cannot reasonably use water samples, discharge impurities inconveniently, and have low filtration efficiency, and has the advantages of simple structure, low manufacturing cost, high filtration efficiency, and high water sample utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model laboratory water sample extraction and filtration device;

[0015] Figure 2 It is a structural schematic diagram of a water inlet component in the utility model laboratory water sample extraction and filtration device;

[0016] Figure 3 This is another structural schematic diagram of the water inlet component in the laboratory water sample extraction and filtration device of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the liquid receiving bucket in the laboratory water sample extraction and filtration device of the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the structure of the filter screen in the laboratory water sample extraction and filtration device.

[0019] In the figure, 1. laboratory table, 2. fixing frame, 3. water inlet assembly, 301. first cylinder, 302. first diverter, 303. second cylinder, 304. axial hole, 305. second diverter, 4. filter membrane, 5. liquid receiving bucket, 501. funnel, 502. connecting cover, 503. filter net, 6. suction bottle, 7. drain outlet, 8. exhaust port, 9. water outlet, 10. first spring clip, 11. second spring clip, 12. vacuum pump, 13. fixing clip, 14, exhaust pipe. DETAILED DESCRIPTION

[0020] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the laboratory water sample filtration device includes a filtration bottle 6, the upper part of the filtration bottle 6 is connected with a liquid receiving bucket 5, the liquid receiving bucket 5 is connected with a vacuum pump 12 through an exhaust pipe 14, and the upper end of the liquid receiving bucket 5 is connected with a water inlet component 3 through a fixing clamp 13, that is, the upper end of the liquid receiving bucket 5 is matched with the lower end of the water inlet component 3, and the water inlet component 3 has different designs suitable for two situations of more water samples and less water samples. The water outlet ends of the water inlet components 3 in both situations are open. According to the different amounts of water samples required for filtration in the experiment, two water inlet components 3 are designed, which is conducive to the rational use of water samples. A filter membrane 4 is installed at the joint between the liquid receiving bucket 5 and the water inlet component 3. The size of the filter membrane 4 is consistent with the caliber of the lower end of the water inlet component 3. The lower end of the water inlet component 3 is inclined relative to the horizontal plane, that is, the upper end of the liquid receiving bucket 5 is also inclined relative to the horizontal plane, and the inclination angles of the two are consistent; a water outlet 9 is provided at the bottom of the suction bottle 6, and the water outlet 9 is externally connected to a water outlet pipe, and a second spring clip 11 is provided on the outer sleeve of the water outlet pipe. The suction bottle 6 is fixed to the upper surface of the laboratory table 1 by a fixing frame 2. After the filtration is completed, the second spring clip 11 connected to the water outlet pipe at the bottom of the suction bottle 6 is released to discharge the sample.

[0022] like Figure 2 The water inlet assembly 3 shown is used when there are many water samples. The water inlet assembly 3 includes a first cylinder 301 with openings at both ends. The lower end of the first cylinder 301 is connected to a first diverter 302. The lower end of the first diverter 302 is open and is inclined relative to the horizontal plane. A drain port 7 is provided at the lowest point of the inclined edge of the first diverter 302, and is inclined 20 to 40 degrees along the drainage direction of the drain port 7. The drain port 7 is externally connected to a drain pipe, and a first spring clip 10 is provided outside the drain pipe. This design allows the portion with a higher impurity content in the sample to be concentrated near the drain port 7 along the inclination angle. By loosening the first spring clip 10, the portion with a higher impurity content in the sample can be discharged, thereby improving the filtration efficiency.

[0023] See Figure 3 The water inlet assembly 3 shown is used when there is little water sample. The water inlet assembly 3 includes a second cylinder 303, the upper end of the second cylinder 303 is concave, the lower end of the second cylinder 303 is connected to a second diverter 305, and the center of the second cylinder 303 is provided with an axial hole 304 that passes through the second cylinder 303 and the second diverter 305. In this case, the size of the filter membrane 4 is consistent with the caliber of the axial hole 304, and the lower end of the second diverter 305 is open and tilted relative to the horizontal plane, with an inclination angle of 20 to 40 degrees. This is designed for the case of little water sample. The size of the filter membrane 4 is small, which will not cause the water sample to be excessively absorbed by the filter membrane 4. The water sample can enter the suction bottle 6 through the liquid receiving funnel 5 after being filtered along the axial hole 304.

[0024] See Figure 4 The liquid receiving hopper 5 includes a funnel 501, a filter screen 503 is arranged on the top of the funnel 501, a connecting cover 502 is sleeved on the outside of the branch pipe at the lower end of the funnel 501, the connecting cover 502 is fixedly connected to the upper part of the suction bottle 6, and a suction port 8 is opened on the side wall of the connecting cover 502, and the suction port 8 is connected to the suction pipe 14, and the suction pipe 14, the connecting cover 502 and the interior of the suction bottle 6 are connected.

[0025] like Figure 5 As shown, the filter screen 503 is composed of a fine filter screen, and the filtering accuracy of the filter screen 503 is 0.05cm to 0.1cm.

[0026] When the utility model laboratory water sample extraction and filtration device is used, its working process is as follows:

[0027] First, the water inlet assembly 3, the filter membrane 4 and the liquid receiving funnel 5 are fixed by the fixing clamp 13, and the liquid receiving funnel 5 is connected to the vacuum pump 12 through the exhaust pipe 14. Secondly, the vacuum pump 12 is turned on to extract the air in the suction bottle 6 to reduce the pressure in the suction bottle 6 and present a vacuum state.

[0028] In the case of multiple water samples, use Figure 2 In the water inlet component 3 shown, the part with higher impurity content in the sample is concentrated near the drain port 7 as the tilt angle increases. The first spring clip 10 is loosened to discharge the part with higher impurity content in the sample, thereby improving the filtration efficiency. Under the action of atmospheric pressure, the water sample in the water inlet component 3 is filtered through the filter membrane 4 and the filter net 503 and then flows into the filtration bottle 6, so that the solid and liquid are separated.

[0029] In case of less water sample, use Figure 3 In the water inlet assembly 3 shown, the water sample flows along the inner wall of the axial hole 304 and is filtered before entering the suction filtration bottle 6 through the liquid receiving funnel 5 .

[0030] Finally, after the filtration is completed, the vacuum pump 12 is turned off, and the second spring clip 11 is released, so that the atmospheric pressure is restored in the filtration bottle 6, and the filtered liquid is smoothly transferred to the experimental container through the water outlet 9.

[0031] Example 1

[0032] The laboratory water sample filtration device comprises a filtration bottle 6, the upper part of which is connected to a liquid receiving bucket 5, which is connected to a vacuum pump 12 via an exhaust pipe 14, the upper end of which is connected to a water inlet assembly 3 via a fixing clamp 13, a filter membrane 4 is installed at the joint between the liquid receiving bucket 5 and the water inlet assembly 3, the size of the filter membrane 4 is consistent with the caliber of the lower end of the water inlet assembly 3, the lower end of the water inlet assembly 3 is inclined relative to the horizontal plane, a water outlet 9 is provided at the bottom of the filtration bottle 6, the water outlet 9 is externally connected to a water outlet pipe, and a second spring clip 11 is provided on the outer sleeve of the water outlet pipe.

[0033] Example 2

[0034] The laboratory water sample filtration device comprises a filtration bottle 6, the upper part of which is connected to a liquid receiving bucket 5, which is connected to a vacuum pump 12 via an exhaust pipe 14, the upper end of which is connected to a water inlet assembly 3 via a fixing clamp 13, a filter membrane 4 is installed at the joint between the liquid receiving bucket 5 and the water inlet assembly 3, the size of the filter membrane 4 is consistent with the caliber of the lower end of the water inlet assembly 3, the lower end of the water inlet assembly 3 is inclined relative to the horizontal plane, a water outlet 9 is provided at the bottom of the filtration bottle 6, the water outlet 9 is externally connected to a water outlet pipe, and a second spring clip 11 is provided on the outer sleeve of the water outlet pipe.

[0035] A structure of the water inlet assembly 3 is: it includes a first cylinder 301 with openings at both ends, the lower end of the first cylinder 301 is connected to the first diverter 302, the lower end of the first diverter 302 is open and is inclined relative to the horizontal plane, a drain outlet 7 is provided at the lowest point of the inclined edge of the first diverter 302, the drain outlet 7 is connected to a drain pipe, and a first spring clip 10 is provided outside the drain pipe.

[0036] Another structure of the water inlet assembly 3 is: it includes a second cylinder 303, the upper end of the second cylinder 303 is concave, the lower end of the second cylinder 303 is connected to the second diverter 305, and the center position of the second cylinder 303 is provided with an axial hole (304) that passes through the second cylinder 303 and the second diverter 305, and the lower end of the second diverter 305 is open and inclined relative to the horizontal plane.

[0037] The structure of the liquid receiving hopper 5 is: it includes a funnel 501, a filter screen 503 is arranged on the top of the funnel 501, a connecting cover 502 is sleeved on the outside of the branch pipe at the lower end of the funnel 501, the connecting cover 502 is fixedly connected to the upper part of the suction bottle 6, and a suction port 8 is opened on the side wall of the connecting cover 502. The suction port 8 is externally connected to the suction pipe 14, and the suction pipe 14, the connecting cover 502 and the interior of the suction bottle 6 are connected.

[0038] Example 3

[0039] The laboratory water sample filtration device comprises a filtration bottle 6, the upper part of which is connected to a liquid receiving bucket 5, which is connected to a vacuum pump 12 via an exhaust pipe 14, the upper end of which is connected to a water inlet assembly 3 via a fixing clamp 13, a filter membrane 4 is installed at the joint between the liquid receiving bucket 5 and the water inlet assembly 3, the size of the filter membrane 4 is consistent with the caliber of the lower end of the water inlet assembly 3, the lower end of the water inlet assembly 3 is inclined relative to the horizontal plane, a water outlet 9 is provided at the bottom of the filtration bottle 6, the water outlet 9 is externally connected to a water outlet pipe, and a second spring clip 11 is provided on the outer sleeve of the water outlet pipe.

[0040] A structure of the water inlet assembly 3 is: it includes a first cylinder 301 with openings at both ends, the lower end of the first cylinder 301 is connected to the first diverter 302, the lower end of the first diverter 302 is open and is inclined relative to the horizontal plane, a drain outlet 7 is provided at the lowest point of the inclined edge of the first diverter 302, the drain outlet 7 is connected to a drain pipe, and a first spring clip 10 is provided outside the drain pipe.

[0041] Another structure of the water inlet assembly 3 is: it includes a second cylinder 303, the upper end of the second cylinder 303 is concave, the lower end of the second cylinder 303 is connected to the second diverter 305, and the center position of the second cylinder 303 is provided with an axial hole (304) that passes through the second cylinder 303 and the second diverter 305, and the lower end of the second diverter 305 is open and inclined relative to the horizontal plane.

[0042] The liquid receiving hopper 5 includes a funnel 501, a filter screen 503 is arranged on the top of the funnel 501, a connecting cover 502 is sleeved on the outside of the branch pipe at the lower end of the funnel 501, the connecting cover 502 is fixedly connected to the upper part of the suction bottle 6, and a suction port 8 is opened on the side wall of the connecting cover 502, and the suction port 8 is connected to the outside of the suction pipe 14, and the suction pipe 14, the connecting cover 502 and the interior of the suction bottle 6 are connected.

[0043] The filtering accuracy of the filter 503 is 0.05 cm to 0.1 cm. The lower end of the water inlet assembly 3 is inclined 20 to 40 degrees with respect to the horizontal plane along the drainage direction of the drainage port 7. The suction filter bottle 6 is fixed to the upper surface of the experimental table 1 through the fixing frame 2.

Claims

1. Laboratory water sample filtration device, characterized in that: It comprises a suction filter bottle (6), the upper part of which is butt-jointed with a liquid receiving hopper (5), the liquid receiving hopper (5) being connected to a vacuum pump (12) via an air extraction pipe (14), the upper end of which is butt-jointed with a water inlet assembly (3) via a fixing clamp (13), a filter membrane (4) being installed at the joint between the liquid receiving hopper (5) and the water inlet assembly (3), the size of the filter membrane (4) being consistent with the caliber of the lower end of the water inlet assembly (3), the lower end of the water inlet assembly (3) being arranged inclined relative to a horizontal plane; a water outlet (9) being provided at the bottom of the suction filter bottle (6), the water outlet (9) being externally connected to a water outlet pipe, a second spring clamp (11) being provided on the outer sleeve of the water outlet pipe; The water inlet assembly (3) has a structure comprising: a first cylinder (301) with openings at both ends, the lower end of the first cylinder (301) being connected to a first diverter (302), the lower end of the first diverter (302) being open and arranged obliquely relative to a horizontal plane, a drain outlet (7) being arranged at the lowest point of the inclined edge of the first diverter (302), the drain outlet (7) being externally connected to a drain pipe, and a first spring clip (10) being arranged outside the drain pipe; Alternatively, another structure of the water inlet assembly (3) is: comprising a second cylinder (303), the upper end of the second cylinder (303) is concave, the lower end of the second cylinder (303) is connected to a second diverter (305), an axial hole (304) penetrating the second cylinder (303) and the second diverter (305) is provided at the center of the second cylinder (303), and the lower end of the second diverter (305) is open and inclined relative to a horizontal plane.

2. The laboratory water sample filtration device according to claim 1, characterized in that: The structure of the liquid receiving hopper (5) is as follows: it comprises a funnel (501), a filter screen (503) is arranged on the top of the funnel (501), a connecting cover (502) is sleeved on the outside of the branch pipe at the lower end of the funnel (501), the connecting cover (502) is fixedly connected to the upper part of the suction filtration bottle (6), a suction port (8) is opened on the side wall of the connecting cover (502), the suction port (8) is externally connected to a suction pipe (14), and the suction pipe (14), the connecting cover (502) and the interior of the suction filtration bottle (6) are in communication.

3. The laboratory water sample filtration device according to claim 2, characterized in that: The filtering accuracy of the filter (503) is 0.05 cm to 0.1 cm.

4. The laboratory water sample filtration device according to claim 1, characterized in that: The lower end of the water inlet assembly (3) is inclined at 20 to 40 degrees with respect to the horizontal plane along the drainage direction of the drainage outlet (7).

5. The laboratory water sample filtration device according to claim 1, characterized in that: The suction filtration bottle (6) is fixed to the upper surface of the experimental table (1) via a fixing frame (2).

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