CN210108821U

CN210108821U - Water sample pretreatment device for detecting mercury ions in water

Info

Publication number: CN210108821U
Application number: CN201920598937.1U
Authority: CN
Inventors: 钱佳; 许柯; 任洪强
Original assignee: Jiangsu Zhongyi Co Ltd Analysis Of Gold
Current assignee: Jiangsu Zhongyi Co Ltd Analysis Of Gold
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-02-21
Anticipated expiration: 2029-04-28

Abstract

The utility model discloses a water sample pretreatment device for detecting mercury ions in water, which comprises a U-shaped pipe and a supporting base, wherein the U-shaped pipe is filled with filler, the bottom center of the U-shaped pipe is provided with a sample water inlet, a water inlet filter, a micro pressure pump I and a sample water inlet pipe are sequentially arranged below the sample water inlet, the right end pipe orifice of the U-shaped pipe is provided with an elution water inlet and a sample water outlet II, the left end pipe orifice of the U-shaped pipe is provided with an elution water outlet and a sample water outlet I, the sample water inlet, the elution water inlet, the sample water outlet II, the elution water outlet and the sample water outlet I are respectively and correspondingly provided with a first switch valve, a fifth switch valve, a third switch valve, a fourth switch valve and a second switch valve, the left side and the right side of the supporting base are provided with vertical supporting rods, the vertical supporting, the sample inlet pipe extends into the water storage cup.

Description

Water sample pretreatment device for detecting mercury ions in water

Technical Field

The utility model belongs to the technical field of the sewage detection, concretely relates to detect water sample preprocessing device of aquatic mercury ion.

Background

Mercury is a substance that is extremely harmful to the environment and human body. The mercury pollution is mainly from waste water discharged by power plants, chlor-alkali, plastics, batteries, electronics and other industries. Mercury has 3 valence states, wherein mercury in a water body exists mainly in a divalent form.

The main methods for measuring mercury ions include traditional colorimetry ultraviolet-visible spectrophotometry, atomic absorption and emission spectrometry, atomic fluorescence spectrometry and the like. The method has the advantages of high sensitivity, good accuracy and the like, but usually needs some expensive analytical instruments, generally needs to be analyzed and determined by professional personnel in a professional laboratory, is complex to operate, has high cost and is difficult to meet the requirement of rapid screening. The existing spectrophotometry has the most extensive application due to simple experimental equipment, low instrument cost, convenient detection, but the method often causes interference to detection results due to the fact that a large amount of impurities are contained in a water sample when measurement is carried out, so that the detection accuracy is influenced.

SUMMERY OF THE UTILITY MODEL

To the technical problem that above-mentioned exists, the utility model provides a can improve the water sample preprocessing device who detects aquatic mercury ion treatment effeciency and the result degree of accuracy.

The technical scheme of the utility model is that: the utility model provides a detect water sample preprocessing device of aquatic mercury ion, including the U-shaped pipe, and support base, the U-shaped intussuseption is filled with the filler, the filler adopts silica gel filler ball, the bottom central point of U-shaped pipe puts and is equipped with the sample water inlet, sample water inlet below is provided with water intake filter, water intake filter's below is provided with miniature force (forcing) pump one, miniature force (forcing) pump below is connected with the sample inlet tube, be equipped with the elution water inlet on the right-hand member mouth of pipe top of U-shaped pipe, the right-hand member mouth of pipe outside portion of U-shaped pipe is equipped with sample delivery port two, be equipped with the elution delivery port on the left end mouth of pipe top of U-shaped pipe, sample water inlet, elution water inlet, sample delivery port two, elution delivery port, sample delivery port, be provided with ooff valve, And a second switch valve supports the left side and the right side of the base and is provided with a vertical supporting rod, a transverse fixing clamp for holding the U-shaped pipe is arranged on the vertical supporting rod, a recovery water tank is arranged inside the base, a water storage cup is arranged in the recovery water tank, and a sample water inlet pipe extends into the water storage cup.

Furthermore, a water inlet filtering membrane with the aperture of 5 mu m is arranged in the water inlet filter and is used for filtering impurities with larger particle size and preventing the filler from being blocked.

Furthermore, the elution water outlet is connected with a water outlet filter, a water outlet filtering membrane with the pore diameter of 0.22 mu m is arranged in the water outlet filter, and a filtering water outlet is arranged outside the water outlet filter, so that micro impurities adsorbed together can be filtered when mercury ions are eluted and enriched, and the purity of the sample is ensured.

Furthermore, a micro pressure pump II is arranged on the elution water inlet.

Furthermore, a first storage rack and a second storage rack are respectively arranged outside the left side and the right side of the supporting base, a sampling bottle is arranged in the first storage rack, and an elution bottle is arranged in the second storage rack.

The working method of the utility model is as follows:

s1: adding a water sample to be detected into a water storage cup, opening a first switch valve, a second switch valve and a third switch valve, closing a fifth switch valve and a fourth switch valve, connecting rubber pipes outside a first sample water outlet and a second sample water outlet, putting the tail ends of the rubber pipes into a sample water inlet pipe, starting a first micro pressure pump, enabling the water sample to sequentially pass through a water inlet filtering membrane with the aperture of 5 mu m in a water inlet filter through the sample water inlet pipe, filtering sundries with larger grain sizes, adsorbing by filling materials from bottom to top, enabling water flow to flow out through the first sample water outlet and the second sample water outlet, and flowing back into the water storage cup through the rubber pipes for cyclic adsorption;

s2: in the washing stage, the liquid in the water storage cup is changed into deionized water, the tail ends of the rubber tubes are respectively placed in a recovery water tank, a first micro pressure pump is started, the filler with the water sample adsorbed is washed by the deionized water, and the washed impurity-containing wastewater respectively flows out of a first sample water outlet and a second sample water outlet and flows into the recovery water tank through the rubber tubes;

s2: and in the elution stage, the first switch valve, the second switch valve and the third switch valve are closed, the fifth switch valve and the fourth switch valve are opened, an eluent is filled in an eluent bottle, an elution water inlet is connected with an eluent bottle through a rubber pipe, a filtration water outlet is connected to a sampling bottle through a rubber pipe, the second miniature pressure pump is opened to feed the eluent into the sampling bottle from the elution water inlet, the eluted liquid containing mercury ions flows out from the elution water outlet, then tiny impurities are filtered out through an effluent filtering membrane with the aperture of 0.22 mu m in an effluent filter, and finally the liquid flows into the sampling bottle from the filtration water outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a U-shaped pipe is as the filling device who packs, for a water inlet of vertical column U-shaped bottom of the pipe, the delivery port of two parallels in upper end because the U-shaped pipe has the linker principle, can guarantee intraductal water level parallel and level under unified atmospheric pressure, guarantees promptly that two delivery ports can go out water simultaneously, consequently not only capacious still has efficient advantage. Furthermore, the utility model discloses be equipped with a plurality of exits, open the change as required, can guarantee to adsorb, wash, the independent of desorption three stage goes on, simultaneously, still is equipped with out the water filter on the elution delivery port, utilizes inside 0.22 mu m's play water filtration membrane when elution enrichment mercury ion, filters the small impurity of together absorption, guarantees the purity of sample. In a word, the utility model relates to a rationally, can carry out effective enrichment to aquatic mercury ion, get rid of other impurity to the interference that detects, improve the rate of accuracy of testing result.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

wherein, 1-U-shaped pipe, 2-sample water inlet, 3-switch valve I, 4-water inlet filter, 5-micro pressure pump I, 6-sample water inlet pipe, 7-sample water outlet I, 8-sample water outlet II, 9-switch valve II, 10-switch valve III, 11-elution water inlet, 12-elution water outlet, 13-switch valve IV, 14-switch valve V, 15-micro pressure pump II, 16-water outlet filter, 17-water outlet filter membrane, 18-filtration water outlet, 19-water inlet filter membrane, 20-filler, 21-supporting base, 22-recovery water tank, 23-water storage cup, 24-sample bottle I, 25-rack II, 26-sampling bottle, 27-elution liquid bottle rack, 2-elution liquid rack, 28-vertical supporting rod, 29-horizontal fixing clamp.

Detailed Description

As shown in figure 1, a water sample pretreatment device for detecting mercury ions in water comprises a U-shaped pipe 1 and a supporting base 21, wherein a filler 20 is filled in the U-shaped pipe 1, the filler 20 is a silica gel filler ball, a sample water inlet 2 is arranged at the center of the bottom of the U-shaped pipe 1, and a water inlet filter 4 is arranged below the sample water inlet 2, wherein a water inlet filtering membrane 19 with the aperture of 5 microns is arranged inside the water inlet filter 4 and is used for filtering sundries with larger particle sizes and preventing the filler 20 from being blocked. The lower part of the water inlet filter 4 is provided with a first micro pressure pump 5, the lower part of the first micro pressure pump 5 is connected with a sample water inlet pipe 6, the top of the right end pipe orifice of the U-shaped pipe 1 is provided with an elution water inlet 11, and the elution water inlet 11 is provided with a second micro pressure pump 15. The outer side of the right end pipe orifice of the U-shaped pipe 1 is provided with a sample water outlet II 8, the top of the left end pipe orifice of the U-shaped pipe 1 is provided with an elution water outlet 12, the elution water outlet 12 is connected with a water outlet filter 16, a water outlet filter membrane 17 with the aperture of 0.22 mu m is arranged inside the water outlet filter 16, the outside of the water outlet filter 16 is provided with a filtering water outlet 18, and when mercury ions are eluted and enriched, micro impurities absorbed together can be filtered, so that the purity of the sample is ensured. The left end mouth of pipe outside portion of U-shaped pipe 1 is equipped with sample delivery port 7, sample water inlet 2, elution water inlet 11, sample delivery port two 8, elution delivery port 12, it has set gradually ooff valve 3 to correspond respectively on sample delivery port 7, ooff valve five 14, ooff valve three 10, ooff valve four 13, ooff valve two 9, it is equipped with vertical support bar 28 to support the base 21 left and right sides, be equipped with on vertical support bar 28 and add the horizontal fixation clamp 29 of holding U-shaped pipe 1, it is equipped with recovery basin 22 to support base 21 inside, be equipped with water storage cup 23 in the recovery basin 22, sample inlet tube 6 extends to in the water storage cup 23. The outer parts of the left side and the right side of the supporting base 21 are respectively provided with a first storage rack 24 and a second storage rack 25, a sampling bottle 26 is arranged in the first storage rack 24, and an elution bottle 27 is arranged in the second storage rack 25.

The working method of the embodiment comprises the following steps:

s1: in the adsorption stage, a water sample to be detected is added into the water storage cup 23, the first switch valve 3, the second switch valve 9 and the third switch valve 10 are opened, the fifth switch valve 14 and the fourth switch valve 13 are closed, rubber pipes are externally connected to the first sample water outlet 7 and the second sample water outlet 8, the tail ends of the rubber pipes are placed into the sample water inlet pipe 6, the first micro pressure pump 5 is started, the water sample sequentially passes through the sample water inlet pipe 6 and a water inlet filtering membrane 19 with the inner aperture of 5 microns in the water inlet filter 4 to filter impurities with larger particle sizes, then the impurities are adsorbed by the filler 20 from bottom to top, and water flows out through the first sample water outlet 7 and the second sample water outlet 8 and flows back into the water storage cup 23 through the rubber pipes to be circularly adsorbed;

s2: in the washing stage, the liquid in the water storage cup 23 is changed into deionized water, the tail ends of the rubber tubes are respectively placed in a recovery water tank 22, a first micro pressure pump 5 is started, the filler 20 absorbed with water samples is washed by the deionized water, and the washed impurity-containing wastewater respectively flows out of a first sample water outlet 7 and a second sample water outlet 8 and flows into the recovery water tank 22 through the rubber tubes;

s2: and in the elution stage, the first switch valve 3, the second switch valve 9 and the third switch valve 10 are closed, the fifth switch valve 14 and the fourth switch valve 13 are opened, an eluent is filled in the eluent bottle 27, the elution water inlet 11 is connected with the eluent bottle 27 through a rubber tube, the filtering water outlet 18 is connected to the sampling bottle 26 through a rubber tube, the second micro pressure pump 15 is started to send the eluent into the elution water inlet 11, the eluted liquid containing mercury ions flows out of the elution water outlet 12, the micro impurities are filtered through the water outlet filtering membrane 17 with the aperture of 0.22 mu m in the water outlet filter 16, and finally the micro impurities flow into the sampling bottle 26 from the filtering water outlet 18.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. A water sample pretreatment device for detecting mercury ions in water is characterized by comprising a U-shaped pipe (1) and a supporting base (21), wherein a filler (20) is filled in the U-shaped pipe (1), a sample water inlet (2) is arranged at the center of the bottom of the U-shaped pipe (1), a water inlet filter (4) is arranged below the sample water inlet (2), a micro pressure pump I (5) is arranged below the water inlet filter (4), a sample water inlet pipe (6) is connected below the micro pressure pump I (5), an elution water inlet (11) is arranged at the top of a right-end pipe orifice of the U-shaped pipe (1), a sample water outlet II (8) is arranged at the outer side of a right-end pipe orifice of the U-shaped pipe (1), an elution water outlet (12) is arranged at the top of a left-end pipe orifice of the U-shaped pipe (1), a sample water outlet I (7) is arranged at the, the utility model discloses a sample water inlet, including base (21), sample water inlet (2), elution water inlet (11), sample delivery port two (8), elution delivery port (12), sample delivery port (7) go up to correspond respectively in proper order and be provided with ooff valve (3), ooff valve five (14), ooff valve three (10), ooff valve four (13), ooff valve two (9), it is equipped with vertical support bar (28) to support the base (21) left and right sides, be equipped with on vertical support bar (28) and add horizontal fixation clamp (29) of holding U-shaped pipe (1), support base (21) inside and be equipped with recovery basin (22), be equipped with in the recovery basin (22) and store up drinking cup (23), sample inlet tube (6) extend to in water storage cup (23).

2. A water sample pretreatment device for detecting mercury ions in water according to claim 1, wherein a water inlet filter membrane (19) with a pore size of 5 μm is arranged inside the water inlet filter (4).

3. The water sample pretreatment device for detecting mercury ions in water according to claim 1, wherein a water outlet filter (16) is connected to the elution water outlet (12), a water outlet filter membrane (17) with a pore size of 0.22 μm is arranged inside the water outlet filter (16), and a filtering water outlet (18) is arranged outside the water outlet filter (16).

4. The water sample pretreatment device for detecting mercury ions in water according to claim 1, wherein a second micro pressure pump (15) is arranged on the elution water inlet (11).

5. The water sample pretreatment device for detecting mercury ions in water according to claim 1, wherein a first rack (24) and a second rack (25) are respectively disposed outside the left side and the right side of the support base (21), a sampling bottle (26) is disposed in the first rack (24), and an elution bottle (27) is disposed in the second rack (25).