Pretreatment device for detecting concentration of suspended matters in water body

Abstract

The utility model relates to the technical field of water treatment devices, in particular to a pretreatment device for detecting the concentration of suspended solids in a water body, which comprises a water sample layering device, the water sample layering device comprises a filter cup, a connecting pipe communicated with the filter cup, an extension piece communicated with the connecting pipe and a connecting branch pipe communicated with the connecting pipe, one end, far away from the connecting pipe, of the connecting branch pipe is arranged in the filter cup; a liquid leakage switch is arranged on the connecting pipe and is arranged between the filter cup and the connecting branch pipe; the filtering funnel is connected with the extension piece in a sealing manner and is used for filtering substances from the water sample layering device; the suction flask is in sealed connection with the filtering funnel and is used for containing filtrate filtered by the filtering funnel; and the suction pump is connected with the suction flask. The pretreatment device disclosed by the utility model can shorten the filtering time, improve the filtering efficiency, reduce the frequency of replacing the filter paper, save consumables and improve the accuracy of a detection result at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment devices, in particular to a pretreatment device for detecting the concentration of suspended matter in water. Background Art

[0002] At present, the concentration of suspended matter in water bodies in the laboratory is generally detected by pretreatment using a filtration device; the existing filtration device includes a Büchner funnel, a filtration bottle and a suction pump. When the solid content of the sample is not high, the filtration time is generally less than half an hour. The water sample can pass through the filter membrane and be completely pumped into the filtration bottle. At this time, there is no need to replace the filter membrane. The filtration device is easy to use and effective.

[0003] However, when pre-treating water samples with high solid content or containing large suspended matter, if a suction filtration device is still used, the suspended matter in the sample will quickly block the filter membrane, making it difficult to filter the upper water sample, greatly increasing the time required for suction filtration. For water samples with high solid content, such as muddy water from a water plant, the suction filtration time can even be as long as two hours, and the filtration efficiency is low. In addition, the filter membrane needs to be replaced frequently, which is not only cumbersome to operate, but also increases the risk of suspended matter falling and filter membrane breaking during the process of replacing the filter membrane, thereby causing the accuracy of the test results to decrease. The above-mentioned defects are what those skilled in the art expect to overcome. Utility Model Content

[0004] In order to solve the above problems in the prior art, the utility model provides a pretreatment device for detecting the concentration of suspended matter in water, which can improve the filtration efficiency and the accuracy of the detection result.

[0005] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0006] A pretreatment device for detecting the concentration of suspended matter in water, comprising:

[0007] A water sample stratification device, comprising a filter cup, a connecting pipe connected to the filter cup, an extension connected to the connecting pipe, and a connecting branch connected to the connecting pipe; one end of the connecting branch away from the connecting pipe is arranged inside the filter cup; a liquid leakage switch is arranged on the connecting pipe, and the liquid leakage switch is arranged between the filter cup and the connecting branch;

[0008] a filter funnel, sealedly connected to the extension piece, for filtering substances from the water sample stratification device;

[0009] A suction filtration bottle, sealed and connected to the filter funnel, for receiving the filtrate filtered by the filter funnel; and

[0010] A suction pump is connected to the suction filtration bottle.

[0011] The water sample is allowed to stand in the filter cup to separate into layers, with the upper layer being a relatively clear supernatant and the lower layer being high-concentration muddy water. The suction pump is connected to the filter bottle, and a vacuum is formed inside the filter bottle, the filter funnel, and the water sample stratification device. The supernatant flows along the connecting branch pipe into the connecting pipe, the extension piece, and the filter funnel in sequence, thereby giving priority to processing the supernatant and then processing the high-concentration muddy water at the bottom. Separate treatments can improve filtration efficiency and shorten the time required for filtration.

[0012] Furthermore, the extension member includes a first mounting portion connected to the connecting pipe and a second mounting portion connected to the first mounting portion; the second mounting portion is sealed and connected to the filter funnel; the cross-sectional area of ​​the first mounting portion gradually increases from the end close to the connecting pipe to the end far from the connecting pipe. By setting the cross-sectional area of ​​the first mounting portion to gradually increase from the end close to the connecting pipe to the end far from the connecting pipe, it is beneficial to accelerate the speed of the material flowing out of the connecting pipe and improve the filtering efficiency.

[0013] Preferably, the outer surface of the second mounting part near one end of the filter funnel is provided with an outer frosted layer; the filter funnel comprises a funnel body connected to the second mounting part and a liquid outlet pipe connected to the funnel body; the inner surface of the funnel body near one end of the second mounting part is provided with an inner frosted layer, and the inner frosted layer cooperates with the outer frosted layer. This is beneficial to increase the friction between the second mounting part and the funnel body, reduce the risk of the second mounting part and the funnel body sliding and separating, and also facilitate the installation and removal of the water sample stratification device and the filter funnel.

[0014] Preferably, a porous support layer is provided in the funnel body, and a plurality of small holes are evenly distributed on the porous support layer.

[0015] Preferably, a sealing member is provided at the opening of the suction filter bottle, the sealing member is formed with a through hole, the liquid outlet pipe passes through the through hole and is provided in the suction filter bottle; the outer diameter of the liquid outlet pipe is equal to the aperture of the through hole. This effectively prevents gas leakage at the connection between the suction filter bottle and the filter funnel, ensures good sealing at the connection, and does not affect the filtering effect.

[0016] Furthermore, the connecting branch pipe includes a first branch pipe connected to the connecting pipe, a second branch pipe connected to the first branch pipe, and a connecting hose sleeved on the outside of one end of the second branch pipe away from the first branch pipe; the end of the connecting hose away from the second branch pipe is arranged inside the filter cup. By arranging the connecting hose sleeved on the outside of the second branch pipe, it is convenient to flexibly control the position of the connecting branch pipe inside the filter cup.

[0017] Preferably, the second branch pipe is vertically arranged, and the angle formed between the second branch pipe and the first branch pipe is an obtuse angle, which is conducive to the supernatant in the filter cup flowing smoothly through the second branch pipe and the first branch pipe into the connecting pipe, reducing the residue of the supernatant in the first branch pipe and the second branch pipe.

[0018] Preferably, the filter cup, the connecting pipe, the extension piece, the first branch pipe and the second branch pipe are integrally formed, so as to facilitate the rapid assembly of the pretreatment device.

[0019] Preferably, the filter cup, the connecting pipe, the extension piece, the first branch pipe and the second branch pipe are all glass components, so that the operator can observe the situation during the filtering process intuitively.

[0020] Furthermore, the suction bottle is connected to the suction pump through an air suction pipe; the suction bottle is provided with an air suction port, which is connected to the inner cavity of the suction bottle; one end of the air suction pipe is sleeved on the outside of the air suction port, and the other end is connected to the output end of the suction pump.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0022] The utility model discloses a pretreatment device for detecting the concentration of suspended matter in water. The pretreatment device includes a water sample stratification device, a filter funnel, a suction filter bottle and a suction pump. The water sample stratification device includes a filter cup, a connecting pipe, an extension piece and a connecting branch pipe. The connecting pipe is connected to the filter cup, the extension piece is connected to the connecting pipe, the connecting branch pipe is arranged at one side of the connecting pipe and is connected to the connecting pipe, one end of the connecting branch pipe away from the connecting pipe is arranged inside the filter cup, a leakage switch is arranged on the connecting pipe, and the leakage switch is arranged between the filter cup and the connecting branch pipe. When the water sample is statically layered in the filter cup, the upper layer is a relatively clear supernatant and the lower layer is muddy water with high concentration. The suction pump is connected to the suction filter bottle, a vacuum is formed inside the suction filter bottle, the filter funnel and the water sample stratification device, and the supernatant enters the connecting pipe, the extension piece and the filter funnel in sequence along the connecting branch pipe, so that the supernatant is treated first and then the muddy water with high concentration at the bottom is treated separately, which can improve the filtration efficiency and shorten the time required for filtration. At the same time, it can also reduce the frequency of replacing the filter membrane and reduce the risk of suspended matter falling from the filter membrane and the filter membrane breaking when replacing the filter membrane, thereby improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the connection between the second branch pipe and the connecting hose in one embodiment of the utility model;

[0025] Figure 3 It is a schematic structural diagram of the connection between the water sample stratification device and the filter funnel in one embodiment of the utility model.

[0026] [Explanation of the accompanying drawings] 1. Water sample stratification device; 11. Filter cup; 12. Connecting pipe; 13. Extension piece; 131. First mounting part; 132. Second mounting part; 14. Connecting branch pipe; 141. First branch pipe; 142. Second branch pipe; 143. Connecting hose; 15. Liquid leakage switch; 2. Filter funnel; 21. Funnel body; 22. Liquid outlet pipe; 23. Porous supporting layer; 3. Filter bottle; 31. Vacuum port; 4. Suction pump; 5. Vacuum pipe; 6. Sealing part. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0029] See also Figures 1 to 3 , which is a pretreatment device for detecting the concentration of suspended matter in water according to an embodiment of the utility model, the pretreatment device includes a water sample stratification device 1, a filter funnel 2, a suction bottle 3, a suction pump 4 and an air suction pipe 5; the suction bottle 3 is connected to the suction pump 4 through the air suction pipe 5; the filter funnel 2 is connected to the suction bottle 3; the water sample stratification device 1 is connected to the filter funnel 2.

[0030] The water sample stratification device 1 includes a filter cup 11, a connecting tube 12, an extension piece 13, a connecting branch pipe 14 and a leakage switch 15; the connecting tube 12 is arranged at the bottom of the filter cup 11 and is connected to the filter cup 11; the extension piece 13 is arranged at the bottom of the connecting tube 12 and is connected to the connecting tube 12; the connecting branch pipe 14 is arranged on one side of the connecting tube 12 and is connected to the connecting tube 12; wherein, one end of the connecting branch pipe 14 away from the connecting tube 12 is arranged inside the filter cup 11; the leakage switch 15 is arranged on the connecting tube 12, and the leakage switch 15 is arranged between the filter cup 11 and the connecting branch pipe 14.

[0031] The extension member 13 includes a first mounting portion 131 and a second mounting portion 132, wherein the second mounting portion 132 is connected to the first mounting portion 131; the first mounting portion 131 is connected to the connecting pipe 12; and the second mounting portion 132 is sealed and connected to the filter funnel 2. The cross-sectional area of ​​the first mounting portion 131 gradually increases from the end close to the connecting pipe 12 to the end far from the connecting pipe 12; thus, it is helpful to accelerate the speed at which the material flows from the connecting pipe 12 to the filter funnel 2, thereby improving the filtering efficiency.

[0032] The connecting branch pipe 14 includes a first branch pipe 141, a second branch pipe 142 and a connecting hose 143; the first branch pipe 141 is arranged at one side of the connecting pipe 12 and is in communication with the connecting pipe 12; the second branch pipe 142 is in communication with the first branch pipe 141; the connecting hose 143 is sleeved on the outside of the end of the second branch pipe 142 away from the first branch pipe 141, and the end of the connecting hose 143 away from the second branch pipe 142 is arranged inside the filter cup 11. In this embodiment, the connecting hose 143 is a rubber hose, which can flexibly control the position of the connecting branch pipe 14 inside the filter cup 11. Preferably, the second branch pipe 142 is arranged vertically, and the angle formed between the second branch pipe 142 and the first branch pipe 141 is an obtuse angle, which is conducive to the substances in the filter cup 11 to smoothly pass through the second branch pipe 142 and the first branch pipe 141 and enter the connecting pipe 12, thereby reducing the residue of substances in the first branch pipe 141 and the second branch pipe 142.

[0033] The filter cup 11, the connecting pipe 12, the extension piece 13, the first branch pipe 141 and the second branch pipe 142 are integrally formed, which is convenient for quick assembly of the pretreatment device. The filter cup 11, the connecting pipe 12, the extension piece 13, the first branch pipe 141 and the second branch pipe 142 are all glass components, which is convenient for the operator to intuitively observe the situation during the filtration process.

[0034] The filter funnel 2 is sealed and connected to the extension piece 13, and is used to receive and filter the substances from the water sample stratification device 1. The filter funnel 2 includes a funnel body 21 and a liquid outlet pipe 22, and the liquid outlet pipe 22 is connected to the funnel body 21; the funnel body 21 is connected to the second mounting portion 132. Specifically, the inner surface of the funnel body 21 near one end of the second mounting portion 132 is provided with an inner frosted layer; correspondingly, the outer surface of the second mounting portion 132 near one end of the filter funnel 2 is provided with an outer frosted layer, and the outer frosted layer cooperates with the inner frosted layer to increase the friction between the second mounting portion 132 and the funnel body 21, reduce the risk of sliding and separating the second mounting portion 132 and the funnel body 21 during use, and is conducive to improving the overall structural stability of the pretreatment device; at the same time, it is also convenient for the installation and disassembly of the water sample stratification device 1 and the filter funnel 2. A porous support layer 23 is provided in the funnel body 21 for placing the filter membrane. A plurality of small holes are evenly distributed on the porous support layer 23, and the aperture size of each small hole is equal. In this embodiment, the capacity of the filter funnel 2 is 1.5 liters; the filter funnel 2 is a glass component.

[0035] The suction bottle 3 is sealed and connected to the filter funnel 2, and is used to hold the filtrate filtered by the filter funnel 2. Specifically, a sealing member 6 is sealed at the opening of the suction bottle 3, and the sealing member 6 is formed with a through hole; the liquid outlet pipe 22 of the filter funnel 2 passes through the through hole and is arranged in the suction bottle 3; the outer diameter of the liquid outlet pipe 22 is equal to the aperture of the through hole. The suction bottle 3 is provided with a suction port 31, and the suction port 31 is connected to the inner cavity of the suction bottle 3; one end of the suction pipe 5 is sleeved on the outside of the suction port 31, and the other end is connected to the output end of the suction pump 4. Preferably, the end of the liquid outlet pipe 22 is arranged obliquely, and the end of the liquid outlet pipe 22 is away from the suction port 31, thereby preventing the suction pump 4 from sucking in the filtrate. The suction bottle 3 is a glass component.

[0036] During assembly, first, use the suction pipe 5 to connect the suction pump 4 to the suction bottle 3, the sealing member 6 is sealed at the opening of the suction bottle 3, and the liquid outlet pipe 22 of the filter funnel 2 passes through the through hole of the sealing member 6 and is set in the suction bottle 3; then, place the filter membrane on the porous supporting layer 23 of the filter funnel 2; finally, seal and connect the water sample stratification device 1 to the filter funnel 2, check the air tightness, and complete the assembly.

[0037] When in use, first, turn off the leakage switch 15, pour the water sample into the filter cup 11, wait for the water sample to stand and stratify, when the water sample shows a clear stratification boundary, the upper layer is a relatively clear supernatant, and the lower layer is a high-concentration muddy water, extend the connecting hose 143 into the supernatant of the filter cup 11, and the end of the connecting hose 143 is located above the stratification boundary; then, turn on the suction pump 4, the supernatant in the filter cup 11 enters the connecting hose 143, and enters the filter funnel 2 along the second branch pipe 142, the first branch pipe 141, the connecting pipe 12, and the extension piece 13, so as to preferentially treat the supernatant. After all the supernatant in the filter cup 11 has been pre-treated, turn on the leakage switch 15, so that the high-concentration muddy water in the lower layer of the filter cup 11 flows through the connecting pipe 12 and the extension piece 13 to the filter funnel 2 for filtration. Finally, rinse the filter cup 11 repeatedly with clean water until no suspended matter remains on the inner wall of the filter cup 11. The pretreatment device can process the supernatant first and then the high-concentration muddy water at the bottom, thereby improving the filtration efficiency and shortening the filtration time. At the same time, the pretreatment device can also reduce the frequency of filter membrane replacement and reduce the risk of suspended matter falling from the filter membrane and the risk of filter membrane breakage when replacing the filter membrane, thereby improving the accuracy and reliability of the detection results.

[0038] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A pretreatment device for detecting the concentration of suspended matter in water, characterized in that: include: A water sample stratification device (1), the water sample stratification device (1) comprising a filter cup (11), a connecting pipe (12) connected to the filter cup (11), an extension piece (13) connected to the connecting pipe (12), and a connecting branch pipe (14) connected to the connecting pipe (12); one end of the connecting branch pipe (14) away from the connecting pipe (12) is arranged inside the filter cup (11); a liquid leakage switch (15) is provided on the connecting pipe (12), and the liquid leakage switch (15) is arranged between the filter cup (11) and the connecting branch pipe (14); A filter funnel (2) is sealed and connected to the extension piece (13) and is used to filter substances from the water sample stratification device (1); A suction filtration bottle (3) is sealed and connected to the filter funnel (2) and is used to receive the filtrate filtered by the filter funnel (2); and A suction pump (4) is connected to the suction filtration bottle (3).

2. A pretreatment device for detecting the concentration of suspended matter in water according to claim 1, characterized in that: The extension member (13) comprises a first mounting portion (131) connected to the connecting pipe (12) and a second mounting portion (132) connected to the first mounting portion (131); the second mounting portion (132) is sealedly connected to the filter funnel (2); and the cross-sectional area of ​​the first mounting portion (131) gradually increases from an end close to the connecting pipe (12) to an end far from the connecting pipe (12).

3. A pretreatment device for detecting the concentration of suspended matter in water according to claim 2, characterized in that: An outer surface of the second mounting portion (132) close to one end of the filter funnel (2) is provided with an outer frosted layer; The filtering funnel (2) comprises a funnel body (21) connected to the second mounting portion (132) and a liquid outlet pipe (22) in communication with the funnel body (21); an inner surface of the funnel body (21) at one end close to the second mounting portion (132) is provided with an inner frosted layer, the inner frosted layer being matched with the outer frosted layer.

4. A pretreatment device for detecting the concentration of suspended matter in water according to claim 3, characterized in that: A porous support layer (23) is provided in the funnel body (21), and a plurality of small holes are evenly distributed on the porous support layer (23).

5. A pretreatment device for detecting the concentration of suspended matter in water according to claim 3, characterized in that: A sealing member (6) is provided at the opening of the suction filtration bottle (3), the sealing member (6) being provided with a through hole, the liquid outlet pipe (22) passing through the through hole and being provided in the suction filtration bottle (3); the outer diameter of the liquid outlet pipe (22) is equal to the aperture of the through hole.

6. A pretreatment device for detecting the concentration of suspended matter in water according to claim 1, characterized in that: The connecting branch pipe (14) comprises a first branch pipe (141) connected to the connecting pipe (12), a second branch pipe (142) connected to the first branch pipe (141), and a connecting hose (143) sleeved on the outside of an end of the second branch pipe (142) away from the first branch pipe (141); an end of the connecting hose (143) away from the second branch pipe (142) is arranged inside the filter cup (11).

7. A pretreatment device for detecting the concentration of suspended matter in water according to claim 6, characterized in that: The second branch pipe (142) is arranged vertically; the angle formed between the second branch pipe (142) and the first branch pipe (141) is an obtuse angle.

8. A pretreatment device for detecting the concentration of suspended matter in water according to claim 6, characterized in that: The filter cup (11), the connecting pipe (12), the extending piece (13), the first branch pipe (141) and the second branch pipe (142) are integrally formed.

9. A pretreatment device for detecting the concentration of suspended matter in water according to claim 8, characterized in that: The filter cup (11), the connecting pipe (12), the extending piece (13), the first branch pipe (141) and the second branch pipe (142) are all glass components.

10. A pretreatment device for detecting the concentration of suspended matter in water according to claim 1, characterized in that: The suction bottle (3) is connected to the suction pump (4) via a suction pipe (5); the suction bottle (3) is provided with a suction port (31), and the suction port (31) is communicated with the inner cavity of the suction bottle (3); one end of the suction pipe (5) is sleeved on the outside of the suction port (31), and the other end is connected to the output end of the suction pump (4).

Images