Alkyl mercury enrichment device

Abstract

The utility model discloses an alkyl mercury enrichment device which comprises an enrichment pipe, a stirring assembly and an adsorption pipe, an enrichment tank comprises a first tank body, a second tank body and a third tank body, a supporting plate is arranged in the second tank body, a plurality of liquid collecting openings are formed in the supporting plate, a second liquid outlet is formed in the bottom of the third tank body, and the stirring assembly is arranged on the second liquid outlet. The stirring assembly comprises a support, a stirring motor and a liquid inlet are arranged at the top of the support, two stirring shafts are rotatably mounted on the inner side of the support, a stirring frame is mounted at the bottom of each stirring shaft, one adsorption pipe is detachably mounted at the bottom of each liquid collecting opening, and each adsorption pipe comprises a pipe cover and a pipe body. The bottom of the tube cover is in threaded connection with the top of the tube body, a filter screen is arranged in the tube cover, and sulfydryl cotton is placed in the tube body. According to the device, alkyl mercury in a water sample can be efficiently adsorbed, the adsorption speed and the adsorption efficiency are improved, and a good enrichment effect can be ensured.

Description

Technical Field

[0001] The utility model relates to the field of environmental water sample detection pretreatment equipment, in particular to an alkyl mercury enrichment device. Background Art

[0002] Mercury and its various compounds are mostly environmental pollutants that are very harmful to the environment. Among them, inorganic mercury refers to inorganic compounds of mercury, such as HgS, HgSO4, HgC12, etc., and organic mercury refers to organic compounds of mercury, including organic mercury compounds generated by the combination of mercury with alkyl, alkynyl, aromatic, and some organic acid radicals, such as methylmercury. Inorganic mercury ions are converted into highly fat-soluble methylmercury under the action of microorganisms. Methylmercury is a pollutant with strong neurotoxicity that can accumulate through the food chain and eventually affect human health. The concentration of alkyl mercury in water is extremely low, so when sampling, it is generally necessary to enrich it by more than a thousand times, which requires professional and effective enrichment equipment.

[0003] The alkyl mercury enrichment device in the prior art, for example, the device in "GB / T14204-93 Determination of alkyl mercury in water by gas chromatography", is a self-made thiol cotton filling column, that is, 0.1-0.2g of thiol cotton (SCF) is filled in a glass tube with a thin end. The water sample to be tested is transferred to a separatory funnel, stabilized and acidity is added, and then connected to a thiol cotton adsorption column, and the water sample is allowed to flow naturally through the adsorption column by gravity to achieve the purpose of enrichment and concentration.

[0004] The above device can complete the enrichment of alkyl mercury, but the filling effect of the homemade adsorption column is difficult to control, and the water sample treatment process is cumbersome. If the water sample type is complex and there are many particles, clogging is likely to occur, affecting the adsorption speed and efficiency. Utility Model Content

[0005] The utility model aims to provide an alkyl mercury enrichment device, which can efficiently adsorb alkyl mercury in a water sample, improve the adsorption speed and adsorption efficiency, and ensure a good enrichment effect.

[0006] To achieve the above-mentioned purpose and other related purposes, the utility model provides an alkyl mercury enrichment device, which includes: an enrichment tube, a stirring assembly and an adsorption tube, the enrichment tank includes a first tank body, a second tank body and a third tank body, the bottom of the first tank body is threadedly connected to the top of the second tank body, the bottom of the second tank body is threadedly connected to the top of the third tank body, a first partition is provided at the bottom of the inner wall of the first tank body, a first liquid outlet is provided at the bottom of the first partition, a flow meter and a flow regulating valve are provided at the first liquid outlet, a support plate is provided in the second tank body, a plurality of liquid collecting ports are provided on the support plate, and a second liquid outlet is provided at the bottom of the third tank body; the stirring assembly includes A bracket, wherein a stirring motor and a liquid inlet are provided on the top of the bracket, the bottom of the bracket is threadedly connected to the top of the first tank body, two stirring shafts are rotatably installed on the inner side of the bracket, a stirring frame is respectively installed at the bottom of the two stirring shafts, the two stirring frames are located in the first tank body, and the stirring motor is drivingly connected to the two stirring shafts; an adsorption tube is detachably installed at the bottom of each liquid collection port, and the adsorption tube includes a tube cover and a tube body, the bottom of the tube cover is threadedly connected to the top of the tube body, the top opening of the tube cover is communicated with the liquid collection port, and the bottom opening of the tube cover is communicated with the tube body, a filter is provided in the tube cover, and thiol cotton is placed in the tube body.

[0007] In an example of the alkyl mercury enrichment device of the utility model, a filter plate is provided on the first tank body on the upper side of the first partition.

[0008] In an example of the alkyl mercury enrichment device of the utility model, a first valve is provided at the second liquid outlet.

[0009] In an example of an alkyl mercury enrichment device of the utility model, the bracket includes an outer shell and an inner plate, the bottom of the outer shell is threadedly connected to the top of the first tank body, the stirring motor is arranged on the top of the outer shell, the inner plate is fixedly connected to the inner wall of the bottom of the outer shell, and the liquid inlet extends downward from the top of the outer shell and passes through the inner plate to communicate with the first tank body.

[0010] In an example of an alkyl mercury enrichment device of the utility model, the two stirring shafts respectively pass through the inner plate and are rotatably connected to the inner plate, a second gear is respectively provided on the two stirring shafts between the outer shell and the inner plate, a first gear is provided on the output shaft of the stirring motor, and the first gear is located between the two second gears and meshes with the two second gears.

[0011] In an example of the alkyl mercury enrichment device of the utility model, a plug hole is respectively provided on the bottom surface of the two stirring shafts, and a plug rod is respectively provided on the top of the two stirring frames, and the plug rod and the plug hole are interference fit.

[0012] In an example of the alkyl mercury enrichment device of the utility model, the plug-in rod has a hexagonal shape, and the shape of the plug-in hole matches the plug-in rod.

[0013] In an example of the alkyl mercury enrichment device of the utility model, the top of the tube cover and the bottom of the liquid collection port are threadedly connected.

[0014] In an example of the alkyl mercury enrichment device of the utility model, an annular protrusion is provided at the bottom opening of the tube body.

[0015] In an example of the alkyl mercury enrichment device of the utility model, the number of the liquid collection ports is greater than or equal to two, and the plurality of liquid collection ports are evenly distributed on the support plate.

[0016] The alkyl mercury enrichment device of the utility model utilizes the enrichment tank to enrich alkyl mercury in a water sample. The water sample enters the enrichment tank from the liquid inlet, and is stirred by the stirring assembly. The stirring frame is wrapped with mercapto gauze, which can adsorb alkyl mercury in the water sample. The water sample on the upper side of the support plate enters the plurality of liquid collection ports, and then the water sample passes through the adsorption tube. The mercapto cotton in the tube body performs secondary adsorption on the alkyl mercury in the water sample. The filter net in the tube cover can prevent particulate matter in the water sample from contaminating and clogging the mercapto cotton. The utility model can efficiently adsorb alkyl mercury in the water sample, improve the adsorption speed and efficiency, and ensure a good enrichment effect through two adsorptions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an embodiment of an alkyl mercury enrichment device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an adsorption tube in an embodiment of an alkyl mercury enrichment device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a stirring assembly in an embodiment of an alkyl mercury enrichment device of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a stirring frame in an embodiment of an alkyl mercury enrichment device of the utility model.

[0021] Component number:

[0022] 100, enrichment tank; 110, first tank body; 111, filter plate; 112, first partition; 113, first liquid outlet; 114, flow meter; 115, flow regulating valve; 120, second tank body; 121, support plate; 122, liquid collecting port; 130, third tank body; 131, second liquid outlet; 132, first valve; 200, stirring assembly; 210, bracket; 211, outer shell; 212, inner plate; 220, stirring motor; 230, liquid inlet; 240, stirring shaft; 250, stirring frame; 251, plug-in rod; 260, first gear; 270, second gear; 300, adsorption tube; 310, tube cover; 311, filter screen; 320, tube body; 321, annular protrusion. DETAILED DESCRIPTION

[0023] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0024] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are in accordance with the prior art mastery of those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0025] See also Figures 1 to 3The utility model provides an alkyl mercury enrichment device, which includes: an enrichment tank 100, a stirring assembly 200 and an adsorption tube 300, the enrichment tank 100 includes a first tank body 110, a second tank body 120 and a third tank body 130, the bottom of the first tank body 110 is threadedly connected to the top of the second tank body 120, the bottom of the second tank body 120 is threadedly connected to the top of the third tank body 130, a first partition 112 is provided at the bottom of the inner wall of the first tank body 110, a first liquid outlet 113 is provided at the bottom of the first partition 112, a flow meter 114 and a flow regulating valve 115 are provided at the first liquid outlet 113, a support plate 121 is provided in the second tank body 120, a plurality of liquid collecting ports 122 are provided on the support plate 121, and a second liquid outlet 131 is provided at the bottom of the third tank body 130. The stirring assembly 200 includes a bracket 210, the top of which is provided with a stirring motor 220 and a liquid inlet 230, the bottom of which is threadedly connected to the top of the first tank body 110, two stirring shafts 240 are rotatably installed on the inner side of the bracket 210, a stirring frame 250 is respectively installed at the bottom of the two stirring shafts 240, the two stirring frames 250 are located in the first tank body 110, and the stirring motor 220 is drivingly connected to the two stirring shafts 240. An adsorption tube 300 is detachably installed at the bottom of each of the liquid collection ports 122, and the adsorption tube 300 includes a tube cover 310 and a tube body 320, the bottom of the tube cover 310 is threadedly connected to the top of the tube body 320, the top opening of the tube cover 310 is connected to the liquid collection port 122, the bottom opening of the tube cover 310 is connected to the tube body 320, a filter screen 311 is provided in the tube cover 310, and thiol cotton is placed in the tube body 320.

[0026] Before treating the water sample, a mercapto gauze is wrapped around the stirring frame 250, and then the bracket 210 is installed and connected with the first tank body 110, and then the mercapto cotton is placed in the tube body 320, and the tube body 320 is installed and connected with the tube cover 310, and then the tube cover 310 is installed and connected with the liquid collection port 122, and finally the first tank body 110, the second tank body 120 and the third tank body 130 are installed and connected in sequence. When treating the water sample, the water sample is added from the liquid inlet 230, and the water sample enters the first tank body 110, and the stirring motor 220 is turned on, and the stirring motor 220 drives the two stirring shafts 240 to rotate, and the two stirring shafts 240 drive the two stirring frames 250 to rotate, and the two stirring frames 250 stir in the water sample, and the mercapto gauze on the stirring frames 250 is used to absorb alkyl mercury in the water sample. The flow rate at the first liquid outlet 113 is adjusted by the flow regulating valve 115, and the flow rate at the first liquid outlet 113 is monitored by the flow meter 114, so as to adjust the flow rate of the water sample entering the second tank body 120. After the water sample enters the second tank body 120, it falls on the support plate 121, and then the water sample enters a plurality of liquid collecting ports 122, and enters the adsorption tube 300 after passing through the liquid collecting ports 122. The filter net 311 in the tube cover 310 prevents the particulate matter in the water sample from polluting and clogging the thiol cotton. The water sample is processed by multiple adsorption tubes 300 at the same time, which can effectively speed up the adsorption speed, and finally the water sample is discharged from the second liquid outlet 131 of the third tank body 130. The utility model uses the thiol gauze on the stirring frame 250 and the thiol cotton in the tube body 320 to adsorb alkyl mercury in the water sample twice, which can efficiently adsorb alkyl mercury in the water sample, improve the adsorption speed and adsorption efficiency, and ensure a good enrichment effect.

[0027] It should be noted that the flow regulating valve 115 is a remote control switch, and the flow regulating valve 115 can be controlled by the controller for adjustment, and the flow value of the flow meter 114 can also be displayed on the screen of the controller, so that the flow regulating valve 115 is adjusted according to the flow displayed by the flow meter 114. Among them, the flow meter 114, the flow control valve 115 and the controller are all existing technologies and will not be described in detail here.

[0028] See also Figure 1 In an example of the alkyl mercury enrichment device of the utility model, a filter plate 111 is provided on the first tank body 110 on the upper side of the first partition plate 112. A first valve 132 is provided at the second liquid outlet 131. The filter plate 111 can filter the particles in the water sample to prevent the filter net 311 on the tube cover 310 from being blocked by too many particles, and can also block the water sample so that the water sample stays in the first tank body 110 for a certain period of time, thereby improving the adsorption efficiency of the mercapto gauze on the stirring frame 250.

[0029] See also Figure 1 and Figure 3In an example of the alkyl mercury enrichment device of the utility model, the support 210 includes an outer shell 211 and an inner plate 212, the bottom of the outer shell 211 is threadedly connected to the top of the first tank body 110, the stirring motor 220 is arranged at the top of the outer shell 211, the inner plate 212 is fixedly connected to the inner wall of the bottom of the outer shell 211, and the liquid inlet 230 extends downward from the top of the outer shell 211 and passes through the inner plate 212 to communicate with the first tank body 110. The two stirring shafts 240 pass through the inner plate 212 respectively and are rotatably connected to the inner plate 212, and a second gear 270 is respectively provided on the two stirring shafts 240 between the outer shell 211 and the inner plate 212, and a first gear 260 is provided on the output shaft of the stirring motor 220, and the first gear 260 is located between the two second gears 270 and meshes with the two second gears 270. The stirring motor 220 drives the first gear 260 to rotate, the first gear 260 drives the two second gears 270 to rotate, the two second gears 270 respectively drive the two stirring shafts 240 to rotate, the two stirring shafts 240 respectively drive the two stirring frames 250 to rotate, and the two stirring frames 250 rotate in opposite directions, so that turbulence is generated in the water sample, thereby improving the adsorption efficiency.

[0030] See also Figure 4 In an example of the alkyl mercury enrichment device of the utility model, a plug hole is respectively provided on the bottom surface of the two stirring shafts 240, and a plug rod 251 is respectively provided on the top of the two stirring frames 250, and the plug rod 251 and the plug hole are interference fit. The plug rod 251 has a hexagonal shape, and the shape of the plug hole matches the plug rod 251.

[0031] See also Figure 2 In an example of the alkyl mercury enrichment device of the utility model, the top of the tube cover 310 is threadedly connected to the bottom of the liquid collecting port 122. An annular protrusion 321 is provided at the bottom opening of the tube body 320. The number of the liquid collecting ports 122 is greater than or equal to two, and the plurality of liquid collecting ports 122 are evenly distributed on the support plate 121.

[0032] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. An alkyl mercury enrichment device, characterized in that: include: An enrichment tank, the enrichment tank comprising a first tank body, a second tank body and a third tank body, the bottom of the first tank body is threadedly connected to the top of the second tank body, the bottom of the second tank body is threadedly connected to the top of the third tank body, a first partition is provided at the bottom of the inner wall of the first tank body, a first liquid outlet is provided at the bottom of the first partition, a flow meter and a flow regulating valve are provided at the first liquid outlet, a support plate is provided in the second tank body, a plurality of liquid collecting ports are provided on the support plate, and a second liquid outlet is provided at the bottom of the third tank body; A stirring assembly, the stirring assembly comprising a bracket, a stirring motor and a liquid inlet are arranged on the top of the bracket, the bottom of the bracket is threadedly connected to the top of the first tank body, two stirring shafts are rotatably installed on the inner side of the bracket, a stirring frame is respectively installed at the bottom of the two stirring shafts, the two stirring frames are located in the first tank body, and the stirring motor is drivingly connected to the two stirring shafts; An adsorption tube, wherein an adsorption tube is detachably mounted at the bottom of each liquid collection port, the adsorption tube comprises a tube cover and a tube body, the bottom of the tube cover is threadedly connected to the top of the tube body, the top opening of the tube cover is communicated with the liquid collection port, the bottom opening of the tube cover is communicated with the tube body, a filter net is provided in the tube cover, and thiol cotton is placed in the tube body.

2. The alkyl mercury enrichment device according to claim 1, characterized in that: A filter plate is provided on the first tank body on the upper side of the first partition plate.

3. The alkyl mercury enrichment device according to claim 1, characterized in that: A first valve is provided at the second liquid outlet.

4. The alkyl mercury enrichment device according to claim 1, characterized in that: The bracket includes an outer shell and an inner plate, the bottom of the outer shell is threadedly connected to the top of the first tank body, the stirring motor is arranged on the top of the outer shell, the inner plate is fixedly connected to the inner wall of the bottom of the outer shell, and the liquid inlet extends downward from the top of the outer shell and passes through the inner plate to communicate with the first tank body.

5. The alkyl mercury enrichment device according to claim 4, characterized in that: The two stirring shafts pass through the inner plate respectively and are rotatably connected to the inner plate. A second gear is respectively provided on the two stirring shafts between the outer shell and the inner plate. A first gear is provided on the output shaft of the stirring motor. The first gear is located between the two second gears and meshes with the two second gears.

6. The alkyl mercury enrichment device according to claim 1, characterized in that: A plug-in hole is respectively provided on the bottom surface of the two stirring shafts, and a plug-in rod is respectively provided on the top of the two stirring frames. The plug-in rod and the plug-in hole are in interference fit.

7. The alkyl mercury enrichment device according to claim 6, characterized in that: The plug-in rod has a hexagonal shape, and the shape of the plug-in hole matches the plug-in rod.

8. The alkyl mercury enrichment device according to claim 1, characterized in that: The top of the tube cover is threadedly connected to the bottom of the liquid collection port.

9. The alkyl mercury enrichment device according to claim 1, characterized in that: An annular protrusion is arranged at the bottom opening of the tube body.

10. The alkyl mercury enrichment device according to claim 1, characterized in that: The number of the liquid collection ports is greater than or equal to two, and the plurality of liquid collection ports are evenly distributed on the support plate.

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