Portable sampler for detecting drugs in domestic sewage

Abstract

The utility model discloses a portable sampler for detecting drugs in domestic sewage, the portable sampler comprises a plurality of dry ice-solvent ice bath grids which are fixed side by side, the inner bottoms of the plurality of dry ice-solvent ice bath grids are provided with sampling bottle fixing grids through clamping pieces, the sampling bottle fixing grids are used for placing sampling bottles, and the sampling bottles are arranged in the dry ice-solvent ice bath grids. Cover plate devices are arranged at the tops of the plurality of dry ice-solvent ice bath grids, so as to seal and cover the tops of the dry ice-solvent ice bath grids. According to the sampling equipment with the dry ice-solvent ice bath lattice, the sampling bottle fixing grid and the clamping piece matched with one another, the sampling bottle is stably placed, meanwhile, the top of the dry ice-solvent ice bath lattice is sealed and covered with the cover plate device, then the dry ice-solvent bath is used for generating and maintaining low temperature, and the sampling effect is improved. The structure is simple and reliable, no energy is needed in the whole process, and the portable requirement is met.

Description

Technical Field

[0001] The present application relates to the technical field of domestic sewage drug detection equipment, and in particular to a portable sampler for domestic sewage drug detection. Background Art

[0002] Currently, according to the standard TSHSFJD0001-2021, 13 common drugs and metabolites such as amphetamine, methamphetamine, O6-monoacetylmorphine, morphine, codeine, tramadol, 3,4-methylenedioxymethamphetamine, 3,4-methylenedioxyamphetamine, cocaine, benzoylecgonine, ketamine, norketamine, and methcathinone are stipulated to trace the drug manufacturing and drug use in the region through biological sewage sampling.

[0003] In the relevant technology, there are clear requirements for the sampling and retention of sewage samples: sampling frequency every 24 hours, sampling volume is 500mL / bottle, and the sampled samples are immediately frozen (≤-20℃) and stored away from light. The samples collected within 24 hours are mixed in equal proportions, and 500mL of samples are sent to the testing unit for measurement.

[0004] For water samples located at sewage pumping stations, household wells or cellar wells, it is necessary to conduct on-site sampling. However, there must be a certain distance between the sampling location and the equipment that meets the above sampling and retention conditions (such as ultra-low temperature freezers and other equipment). In order for the collected water samples to immediately meet the above retention conditions on site, it is necessary to design additional sampling equipment that can create the retention conditions. Utility Model Content

[0005] The purpose of the present application is to provide a portable sampler for drug detection in domestic sewage, so as to solve the problem that sampling needs to be carried out on-site at sewage pumping stations, household wells or cellar wells. However, there must be a certain distance between the sampling location and the equipment that meets the above-mentioned sampling and retention conditions (such as ultra-low temperature freezers and the like). In order to make the collected water samples meet the above-mentioned retention conditions immediately on-site, it is necessary to design a sampling equipment that can create the retention conditions.

[0006] The portable sampler for drug detection in domestic sewage provided in this application adopts the following technical solution:

[0007] A portable sampler for drug detection in domestic sewage comprises a plurality of dry ice-solvent ice bath grids fixed side by side, the inner bottoms of the plurality of dry ice-solvent ice bath grids are provided with sampling bottle fixing grids via clamping members, the sampling bottle fixing grids are used for placing sampling bottles, and the tops of the plurality of dry ice-solvent ice bath grids are provided with cover devices for sealing and covering the tops of the dry ice-solvent ice bath grids.

[0008] Further, the cover plate device includes a flip cover plate hinged to one side of the top of the dry ice-solvent ice bath grid, and a limiting component is further arranged between the flip cover plate and the dry ice-solvent ice bath grid.

[0009] Further, an access hole corresponding to the fixed grid of the sampling bottle is formed in the flip cover plate, the access hole is matched with the sampling bottle, and a sealing plug matched with the access hole is further arranged on the flip cover plate.

[0010] Further, the limiting component includes a limiting block arranged on one side of the flip cover plate, a limiting hole is formed on one side of the limiting block, a fixing column is arranged on one side of the dry ice-solvent ice bath grid, and a limiting hook matched with the limiting hole is rotatably arranged on the fixing column.

[0011] Further, the clamping member is a fastening frame arranged at the inner bottom of the dry ice-solvent ice bath grid, and the fastening frame is clamped with the outer side of the bottom of the fixed grid of the sampling bottle.

[0012] Further, a waste liquid port is formed on one side of the bottom of each of the plurality of dry ice-solvent ice bath grids, and a waste liquid plug is arranged in the waste liquid port.

[0013] Further, a hook is further arranged on the outer side of the dry ice-solvent ice bath grid.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows:

[0015] Since the standard requires relatively high sample retention conditions (sampling in a 24-hour cycle, and immediate freezing preservation at ≤ -20°C after sampling), the sampling device of the present application, which is formed by the cooperation of the dry ice-solvent ice bath grid, the fixed grid of the sampling bottle, and the clamping member, is used to stably place the sampling bottle. At the same time, the top of the dry ice-solvent ice bath grid is sealed by using the cover plate device, and then the dry ice-solvent bath is used to generate and maintain low temperature. Its structure is simple and reliable, and no energy is required throughout the process, meeting the portable needs.

[0016] In addition, the entire sampler is made of heat-insulating materials, can form stable low-temperature conditions that meet the above standards at low cost, and does not require energy, fully meeting the portability requirements. Except for replenishing dry ice, basically no other intervention by the operator is required, reducing the risk of low-temperature burns. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the portable sampler for detecting drugs in domestic sewage in the embodiment of the present application.

[0018] Figure 2 is a schematic structural diagram of the fixed grid of the sampling bottle and the fastening frame in the embodiment of the present application.

[0019] Figure 3 It is a schematic structural diagram of the limit component in the embodiment of the present application.

[0020] Explanation of reference numerals:

[0021] 1. Dry ice-solvent ice bath grid; 11. Fixed column; 12. Limit hook; 13. Waste liquid port; 14. Waste liquid plug; 15. Hook; 2. Sampling bottle fixing grid; 3. Sampling bottle; 4. Tightening frame; 5. Flipping cover plate; 51. Access hole; 52. Sealing cap plug; 53. Limit block; 54. Limit hole. Detailed implementation manners

[0022] The following further elaborates on the present application in conjunction with the attached Figures 1-3 drawings.

[0023] The embodiment of the present application discloses a portable sampler for detecting drugs in domestic sewage. Referring to Figure 1 , in this embodiment, the portable sampler includes a dry ice-solvent ice bath grid 1, a sampling bottle fixing grid 2, a clamping member, and a cover plate device. Among them, a plurality of dry ice-solvent ice bath grids 1 are provided, and the plurality of dry ice-solvent ice bath grids 1 are fixedly installed side by side with each other. By setting these independent dry ice-solvent ice bath grids 1, it is to make the dry ice evenly distributed in each dry ice-solvent ice bath grid 1, so as to prevent the dry ice and the solvent from concentrating at one end during portable transportation, resulting in the other end not meeting the low-temperature conditions.

[0024] Preferably, hooks 15 are installed on both sides of the mutually side-by-side fixed dry ice-solvent ice bath grids 1. By setting these hooks 15, it is convenient to install the sampler on the hooks 15 by using a hanging rope, so as to achieve the effect of convenient carrying of the sampler.

[0025] At the same time, a plurality of sampling bottle fixing grids 2 are provided, and the number of these sampling bottle fixing grids 2 is the same as the number of these dry ice-solvent ice bath grids 1. These sampling bottle fixing grids 2 are respectively used to place sampling bottles 3, and these sampling bottle fixing grids 2 are respectively stably installed on the inner bottom of these dry ice-solvent ice bath grids 1 through clamping members.

[0026] Specifically, referring to Figure 1 and Figure 2 , in this embodiment, the clamping member is a tightening frame 4. The tightening frame 4 is installed on the inner bottom of the dry ice-solvent ice bath grid 1, and the tightening frame 4 is clamped with the outer bottom of the sampling bottle fixing grid 2, so as to facilitate the stable installation of the sampling bottle fixing grid 2 in the tightening frame 4.

[0027] More specifically, by setting the sampling bottle fixing grid 2, on the one hand, it is used to fix the posture of the sampling bottle 3, so that the sampling bottle 3 does not tilt during transportation and is convenient for access; on the other hand, it enables the solvent to pass through the mesh holes outside the sampling bottle fixing grid 2 to achieve cryogenic freezing of the sampling bottle 3; and the dry ice cannot occupy the position reserved for the sampling bottle 3 inside the sampling bottle fixing grid 2.

[0028] If the sampling bottle fixing grid 2 is missing, when the sampler takes out the sampling bottle 3 from the dry ice-solvent ice bath grid 1 for sampling, the dry ice in the dry ice-solvent ice bath grid 1 will collapse and occupy the original position of the sampling bottle 3. As a result, after sampling is completed, it is difficult to place the sampling bottle 3 inside the dry ice-solvent ice bath grid 1, and the sampler can only manually turn the dry ice, which increases the risk of frostbite from contacting the dry ice-solvent. Therefore, through the design of the sampling bottle fixing grid 2, the dry ice can be tightly accumulated around the sampling bottle 3, and the cooling effect is better.

[0029] In addition, referring to Figure 1 , in this embodiment, a plurality of cover plate devices are provided, and these cover plate devices are respectively tightly covered on the tops of the dry ice-solvent ice bath grids 1 to prevent cold air from escaping. Specifically, the cover plate device includes a flip cover plate 5 and a limiting component. Among them, one side of the flip cover plate 5 is hinged to one side of the top of the dry ice-solvent ice bath grid 1, and the flip cover plate 5 cooperates with the outlet at the top of the dry ice-solvent ice bath grid 1 to be hermetically covered on the top of the dry ice-solvent ice bath grid 1;

[0030] After the flip cover plate 5 is swung open, dry ice and solvent can be replenished into the dry ice-solvent ice bath grid 1, and when the flip cover plate 5 is closed, heat preservation can be achieved.

[0031] At the same time, access holes 51 are provided on these flip cover plates 5. When the flip cover plate 5 is closed on the top of the dry ice-solvent ice bath grid 1, the access holes 51 correspond to the top openings of the sampling bottle fixing grid 2, and the access holes 51 cooperate with the sampling bottle 3 so that the sampling bottle 3 can still be taken out or put in when the flip cover plate 5 is in the closed state; the reason for not using the opening and closing of the flip cover plate 5 to access the sampling bottle 3 is to maximize heat preservation.

[0032] And a sealing plug 52 is detachably placed on the flip cover plate 5, and the sealing plug 52 cooperates with the access hole 51 to hermetically cover the access hole 51. In this way, by setting the sealing plug 52, the access hole 51 can be opened and closed, so as to facilitate taking out or putting in the sampling bottle 3 from the access hole 51.

[0033] In addition, referring to Figure 1 and Figure 3In this embodiment, the limit assembly is arranged between the flip cover 5 and the dry ice-solvent ice bath grid 1 to firmly limit the flip cover 5 on the dry ice-solvent ice bath grid 1. Specifically, the limit assembly includes a limit block 53, a fixing column 11 and a limit hook 12. The limit block 53 is installed at the side of the flip cover 5 away from the hinged end. When the flip cover 5 is covered on the top of the dry ice-solvent ice bath grid 1, the limit block 53 abuts against one side of the top of the dry ice-solvent ice bath grid 1.

[0034] At the same time, the fixing column 11 is installed on one side of the dry ice-solvent ice bath grid 1; the limiting hook 12 is rotatably installed on the fixing column 11, and a limiting hole 54 is opened on one side of the limiting block 53, and the limiting hole 54 cooperates with the limiting hook 12. When the limiting block 53 abuts on one side of the top of the dry ice-solvent ice bath grid 1, the limiting hook 12 on the fixing column 11 is rotated so that the limiting hook 12 is inserted into the limiting hole 54, so that the limiting block 53 can be effectively limited, and then the flip cover plate 5 is stably limited on the top of the dry ice-solvent ice bath grid 1.

[0035] Secondly, refer to Figure 1 In this embodiment, waste liquid ports 13 are provided on one side of the bottom of each of the dry ice-solvent ice bath grids 1, and waste liquid plugs 14 are respectively covered in each of the waste liquid ports 13. The waste liquid ports 13 can be provided to discharge the waste liquid in the dry ice-solvent ice bath grid 1; and the waste liquid plugs 14 can be provided to seal and cover the waste liquid ports 13 to prevent the dry ice-solvent bath from being discharged from the waste liquid ports 13 during freezing.

[0036] Therefore, the present application uses a sampling device in which a dry ice-solvent ice bath grid 1, a sampling bottle fixing grid 2 and a clamping piece cooperate with each other to achieve stable placement of the sampling bottle 3. At the same time, the top of the dry ice-solvent ice bath grid 1 is sealed by using a cover device, and then a dry ice-solvent bath is used to generate and maintain low temperature. The structure is simple and reliable, and the whole process does not require energy, meeting the portability requirements.

[0037] Specific process: Generally, granular dry ice is carefully added to the required solvent until dry ice blocks covering the frozen solvent appear. At this time, the cooling bath temperature has reached the steady-state temperature that can be achieved. After that, the temperature can be maintained by simply adding dry ice blocks and stirring them at regular intervals. The temperature reproducibility of the dry ice solvent bath is good, and the change in steady-state temperature can be controlled within a range of ±1°C.

[0038] In addition, the entire sampler is made of thermal insulation material, which can form stable low-temperature conditions that meet the above standards at low cost, without the need for energy, and fully meets the convenience requirements. Except for replenishing dry ice, basically no other intervention is required by the operator, reducing the risk of low-temperature burns.

[0039] The implementation principle of a portable sampler for detecting drugs in domestic sewage in an embodiment of this application is as follows:

[0040] When sampling outdoors, open the flip cover plate 5, insert the sampling bottle 3 into the sampling bottle fixing grid 2, pour the dry ice and solvent mixture into the dry ice-solvent ice bath grid 1. Since the sampling bottle 3 is already placed in the space of the sampling bottle fixing grid 2, the dry ice will closely surround the sampling bottle fixing grid 2, and then close the flip cover plate 5. After arriving at the sampling site, open the sealing cap plug 52, take out the sampling bottle 3 from the access hole 51. After collecting the water sample, re-place the sampling bottle 3 into the sampling bottle fixing grid 2 through the access hole 51, and then close the sealing cap plug 52, thus completing the sampling process.

[0041] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A portable sampler for detecting drugs in domestic sewage, characterized in that: The invention comprises a plurality of dry ice-solvent ice bath grids (1) fixed side by side, wherein the inner bottoms of the plurality of dry ice-solvent ice bath grids (1) are provided with sampling bottle fixing grids (2) through clamping parts, and the sampling bottle fixing grids (2) are used to place sampling bottles (3), and the tops of the plurality of dry ice-solvent ice bath grids (1) are provided with cover devices to seal and cover the tops of the dry ice-solvent ice bath grids (1).

2. The portable sampler for detecting drugs in domestic sewage according to claim 1, characterized in that: The cover plate device comprises a flip cover plate (5) hinged to one side of the top of the dry ice-solvent ice bath grid (1), and a limit position component is also arranged between the flip cover plate (5) and the dry ice-solvent ice bath grid (1).

3. The portable sampler for detecting drugs in domestic sewage according to claim 2, characterized in that: The flip cover plate (5) is provided with an access hole (51) corresponding to the sampling bottle fixing grid (2), and the access hole (51) is matched with the sampling bottle (3). The flip cover plate (5) is also provided with a sealing cover plug (52) matched with the access hole (51).

4. A portable sampler for detecting drugs in domestic sewage according to claim 2, characterized in that: The limiting assembly comprises a limiting block (53) arranged on one side of the flip cover plate (5), a limiting hole (54) being provided on one side of the limiting block (53), a fixing column (11) being provided on one side of the dry ice-solvent ice bath grid (1), and a limiting hook (12) being rotatably provided on the fixing column (11) and cooperating with the limiting hole (54).

5. A portable sampler for detecting drugs in domestic sewage according to claim 1, characterized in that: The clamping member is a fastening frame (4) arranged at the bottom of the dry ice-solvent ice bath grid (1), and the fastening frame (4) is clamped to the outer side of the bottom of the sampling bottle fixing grid (2).

6. The portable sampler for detecting drugs in domestic sewage according to claim 1, wherein: A waste liquid port (13) is provided on one side of the bottom of a plurality of the dry ice-solvent ice bath grids (1), and a waste liquid plug (14) is provided in the waste liquid port (13).

7. A portable sampler for detecting drugs in domestic sewage according to claim 1, characterized in that: A hook (15) is also provided on the outer side of the dry ice-solvent ice bath grid (1).

Images