CN220132202U - Be used for five day biochemical oxygen demand sample dilution mixing sampling culture device of quality of water - Google Patents
Be used for five day biochemical oxygen demand sample dilution mixing sampling culture device of quality of water Download PDFInfo
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- CN220132202U CN220132202U CN202320993412.4U CN202320993412U CN220132202U CN 220132202 U CN220132202 U CN 220132202U CN 202320993412 U CN202320993412 U CN 202320993412U CN 220132202 U CN220132202 U CN 220132202U
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- Prior art keywords
- sampling
- oxygen demand
- biochemical oxygen
- rubber piston
- mixing
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- 238000005070 sampling Methods 0.000 title claims abstract description 59
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 25
- 239000001301 oxygen Substances 0.000 title claims abstract description 25
- 238000002156 mixing Methods 0.000 title claims abstract description 17
- 239000012898 sample dilution Substances 0.000 title claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 239000011521 glass Substances 0.000 claims abstract description 30
- 238000012258 culturing Methods 0.000 claims abstract description 5
- 230000000694 effects Effects 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims 8
- 239000000523 sample Substances 0.000 description 17
- 239000000243 solution Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000012470 diluted sample Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000012476 oxidizable substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
The utility model provides a sample dilution, mixing, sampling and culturing device for five-day biochemical oxygen demand samples of water quality, which comprises a glass measuring cylinder main body, wherein a base is fixed at the bottom end of the glass measuring cylinder main body, a rubber piston is movably arranged in the glass measuring cylinder main body, a stirring rod is inserted in the center of the rubber piston, the upper end of the stirring rod extends to the upper part of the glass measuring cylinder main body and is provided with a handle, and the lower end of the stirring rod extends to the lower side of the rubber piston and is fixedly sleeved with a bottom plug.
Description
Technical Field
The utility model belongs to the technical field of water quality sample culture, and particularly relates to a sample dilution, uniform mixing, sampling and culture device for a water quality five-day biochemical oxygen demand sample.
Background
Biochemical oxygen demand refers to the dissolved oxygen consumed by biochemical processes that under defined conditions, microorganisms break down certain oxidizable substances in water, particularly the breakdown of organic matter. In general, it means that a water sample is filled in a completely sealed dissolved oxygen bottle, and is cultured in a dark place at (20+ -1) deg.C for 5 d+ -4 h or (2+5) d+ -4 h [ first in a dark place at 0-4 deg.C for 2d, then in a dark place at (20+ -1) deg.C for 5d, namely (2+5) d ], the mass concentration of dissolved oxygen in the water sample before and after the culture is measured, and the amount of dissolved oxygen consumed per liter of the sample is calculated from the difference between the mass concentrations of dissolved oxygen before and after the culture and expressed as the biochemical oxygen demand for five days.
When the organic matters contained in the sample are too high, the water sample needs to be diluted to a certain concentration, if the sample is directly diluted and stirred, a large amount of bubbles are generated, and similarly, the diluted sample is transferred into a culture flask, and bubbles are generated when the diluted sample is poured, so that the accuracy of the test is influenced by the bubbles. Therefore, we propose a sample dilution, mixing, sampling and culturing device for five-day biochemical oxygen demand samples of water quality.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a sample dilution, mixing and sampling culture device for water quality five-day biochemical oxygen demand samples, which comprises a glass graduated cylinder main body 1 and is characterized in that a base 2 is fixed at the bottom end of the glass graduated cylinder main body 1, a rubber piston 8 is movably arranged in the glass graduated cylinder main body 1, a stirring rod 3 is inserted in the center of the rubber piston 8, the upper end of the stirring rod 3 extends to the upper side of the glass graduated cylinder main body 1 and is provided with a handle 11, and the lower end of the stirring rod 3 extends to the lower side of the rubber piston 8 and is fixedly sleeved with a bottom plug 12.
Preferably, the glass cylinder body 1 has a volume of 1L.
Preferably, the cross-sectional diameter of the rubber piston 8 is slightly smaller than the inner diameter of the glass cylinder body 1.
Preferably, a groove 10 is formed in the edge of the rubber piston 8, a sampling tube inlet 4 is inserted into the groove 10, the upper end of the sampling tube inlet 4 is connected with a sampling tube outlet 6 through a connecting belt 5, a clamp is arranged on the connecting belt 5, and the sampling tube outlet 6 extends into the culture bottle 7.
Preferably, the rubber piston 8 is uniformly provided with a plurality of hole grooves 9, the hole grooves 9 are arranged into three circles from outside to inside, and the number of the hole grooves 9 from outside to inside is 15 holes, 9 holes and 6 holes in sequence.
Preferably, the stirring rod 3 is fixed at a middle hole of the rubber piston 8, and the diameter of the middle hole is smaller than that of the stirring rod 3.
Preferably, the grip 11 and the bottom plug 12 are made of rubber tubes.
Preferably, the sampling tube inlet 4 is a 2mL pipette, the connecting band 5 is a rubber tube, and the sampling tube outlet 6 is a de-headed Pasteur pipette.
Preferably, the diameter of the connecting band 5 is much smaller than the outer diameter of the sampling tube inlet 4 and the sampling tube outlet 6.
Compared with the prior art, the utility model has the following beneficial effects:
1) According to the utility model, when a tester dilutes a water sample, only the handle is needed to hold, the rubber piston is slowly driven to stir up and down, when the tester samples the diluted and mixed water sample, only the inlet of the sampling tube is needed to be inserted into the edge groove of the rubber piston, the clamp on the connecting tube is opened, the outlet of the sampling tube is sucked by the ear washing ball, the water outlet extends to the lowest end of the culture flask, the water sample is discharged, the whole process can not cause the water sample to turn up to generate bubbles, and finally the measurement accuracy can not be influenced.
2) According to the utility model, the handle is arranged as the rubber sleeve, so that the hand slip can be avoided, the bottom plug at the bottom of the stirring rod can buffer the collision when the stirring rod bottoms out, and the rubber piston can be fixed and is not easy to fall off from the stirring rod.
3) According to the utility model, the grooves on the rubber piston are arranged, so that the sampling tube can be directly inserted into a sample for sampling without taking out the stirring rod in the sampling process, and the risk of introducing bubbles is further reduced.
Drawings
FIG. 1 is a schematic perspective view of the structure of the present utility model;
FIG. 2 is a schematic elevational view of the structure of the present utility model;
FIG. 3 is a schematic top view of the structure of the present utility model;
FIG. 4 is a schematic view of the structure of FIG. 1A according to the present utility model;
fig. 5 is a schematic diagram of the structure B in fig. 1 according to the present utility model.
In the figure:
1. a glass cylinder body; 2. a base; 3. a stirring rod; 4. an inlet of the sampling tube; 5. a connecting belt; 6. an outlet of the sampling tube; 7. a culture bottle; 8. a rubber piston; 9. a hole groove; 10. a groove; 11. a grip; 12. a bottom plug.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model become more apparent, the technical solutions in the embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings in the embodiments of the present utility model. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the utility model.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The embodiments described below, together with the words of orientation, are exemplary and intended to explain the utility model and should not be taken as limiting the utility model.
In one broad embodiment of the utility model, a sample dilution, mixing and sampling culture device for five-day biochemical oxygen demand samples of water quality comprises a glass measuring cylinder main body 1, and is characterized in that a base 2 is fixed at the bottom end of the glass measuring cylinder main body 1, a rubber piston 8 is movably arranged in the glass measuring cylinder main body 1, a stirring rod 3 is inserted in the center of the rubber piston 8, the upper end of the stirring rod 3 extends to the upper side of the glass measuring cylinder main body 1 and is provided with a handle 11, and the lower end of the stirring rod 3 extends to the lower side of the rubber piston 8 and is fixedly sleeved with a bottom plug 12.
Preferably, the glass cylinder body 1 has a volume of 1L.
Preferably, the cross-sectional diameter of the rubber piston 8 is slightly smaller than the inner diameter of the glass cylinder body 1.
Preferably, a groove 10 is formed in the edge of the rubber piston 8, a sampling tube inlet 4 is inserted into the groove 10, the upper end of the sampling tube inlet 4 is connected with a sampling tube outlet 6 through a connecting belt 5, a clamp is arranged on the connecting belt 5, and the sampling tube outlet 6 extends into the culture bottle 7.
Preferably, the rubber piston 8 is uniformly provided with a plurality of hole grooves 9, the hole grooves 9 are arranged into three circles from outside to inside, and the number of the hole grooves 9 from outside to inside is 15 holes, 9 holes and 6 holes in sequence.
Preferably, the stirring rod 3 is fixed at a middle hole of the rubber piston 8, and the diameter of the middle hole is smaller than that of the stirring rod 3.
Preferably, the grip 11 and the bottom plug 12 are made of rubber tubes.
Preferably, the sampling tube inlet 4 is a 2mL pipette, the connecting band 5 is a rubber tube, and the sampling tube outlet 6 is a de-headed Pasteur pipette.
Preferably, the diameter of the connecting band 5 is much smaller than the outer diameter of the sampling tube inlet 4 and the sampling tube outlet 6.
The utility model will be described in further detail below with reference to the attached drawings, which illustrate preferred embodiments of the utility model.
The utility model provides a be used for five day biochemical oxygen demand sample dilution mixing sample culture apparatus of quality of water, includes glass graduated flask main part 1, its characterized in that, the bottom of glass graduated flask main part 1 is fixed with base 2, the activity is provided with rubber piston 8 in the glass graduated flask main part 1, the center department of rubber piston 8 has pegged graft stirring rod 3, the upper end of stirring rod 3 extends to the top of glass graduated flask main part 1 and is provided with grip 11, the lower extreme of stirring rod 3 extends to the downside of rubber piston 8 and fixedly cup joints bottom plug 12.
Preferably, the glass cylinder body 1 has a volume of 1L.
Preferably, the cross-sectional diameter of the rubber piston 8 is slightly smaller than the inner diameter of the glass cylinder body 1.
Preferably, a groove 10 is formed in the edge of the rubber piston 8, a sampling tube inlet 4 is inserted into the groove 10, the upper end of the sampling tube inlet 4 is connected with a sampling tube outlet 6 through a connecting belt 5, a clamp is arranged on the connecting belt 5, and the sampling tube outlet 6 extends into the culture bottle 7.
Preferably, the rubber piston 8 is uniformly provided with a plurality of hole grooves 9, the hole grooves 9 are arranged into three circles from outside to inside, and the number of the hole grooves 9 from outside to inside is 15 holes, 9 holes and 6 holes in sequence.
Preferably, the stirring rod 3 is fixed at a middle hole of the rubber piston 8, and the diameter of the middle hole is smaller than that of the stirring rod 3.
Preferably, the grip 11 and the bottom plug 12 are made of rubber tubes.
Preferably, the sampling tube inlet 4 is a 2mL pipette, the connecting band 5 is a rubber tube, and the sampling tube outlet 6 is a de-headed Pasteur pipette.
Preferably, the diameter of the connecting band 5 is much smaller than the outer diameter of the sampling tube inlet 4 and the sampling tube outlet 6.
Working principle: when a tester dilutes and mixes water samples with five-day biochemical oxygen demand, only a grip 11 on a stirring rod 3 is required to be held and slightly reciprocated up and down, a bottom plug 12 is arranged at the lower end of the stirring rod 3, the grip 11 and the bottom plug 12 are made of rubber tubes, the upper end can prevent the hand from sliding, the lower end can prevent the bottom end of the stirring rod 3 from poking a base 2 when the water samples are turned, and the water samples are inserted and stirred through a hole groove 9 on a rubber piston 8, so that the test precision is not affected by bubbles;
when the water sample mixed evenly is cultivated and diluted, the sampling tube inlet 4 is inserted into the groove 10 at the edge of the rubber piston 8, the clamp A on the connecting belt 5 is opened, the sampling tube outlet (6) is sucked by the ear washing ball, the sampling tube outlet (6) extends to the lowest end of the culture flask (7) and discharges the water sample, the whole process can not cause the water sample to turn up to generate bubbles, and finally the measurement accuracy can not be influenced.
When the device is used up, the stirring rod 3 can be inserted into the glass cylinder body 1, and the sampling tube inlet 4 and the sampling tube outlet 6 are placed in the groove 10 for standby.
All parts of the component can be detached and replaced, the connection part is a rubber tube, the detachment is convenient, all parts can be obtained by using consumable materials conventionally in a laboratory, and the components can be replaced quickly after damage, so that the time and the material cost are saved.
Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (9)
1. The utility model provides a be used for five day biochemical oxygen demand sample dilution mixing sample culture apparatus of quality of water, includes glass graduated flask main part (1), its characterized in that, the bottom mounting of glass graduated flask main part (1) has base (2), the activity is provided with rubber piston (8) in glass graduated flask main part (1), stirring rod (3) have been pegged graft in the center department of rubber piston (8), the top that stirring rod (3) extended to glass graduated flask main part (1) is provided with handle (11), the lower extreme of stirring rod (3) extends to the downside of rubber piston (8) and fixedly cup joints bottom plug (12).
2. The device for diluting, mixing and sampling culture of water quality five-day biochemical oxygen demand samples according to claim 1, wherein the volume of the glass measuring cylinder main body (1) is 1L.
3. The device for diluting, mixing and sampling culture of water quality five-day biochemical oxygen demand samples according to claim 1, wherein the cross section diameter of the rubber piston (8) is slightly smaller than the inner diameter of the glass cylinder main body (1).
4. The device for diluting, uniformly mixing and sampling and culturing the water quality five-day biochemical oxygen demand sample according to claim 1, wherein a groove (10) is formed in the edge of the rubber piston (8), a sampling tube inlet (4) is inserted into the groove (10), the upper end of the sampling tube inlet (4) is connected with a sampling tube outlet (6) through a connecting belt (5), a clamp is arranged on the connecting belt (5), and the sampling tube outlet (6) stretches into a culture flask (7).
5. The device for diluting, mixing, sampling and culturing the five-day biochemical oxygen demand sample for water quality according to claim 1 is characterized in that a plurality of hole grooves (9) are uniformly formed in the rubber piston (8), the hole grooves (9) are arranged into three circles from outside to inside, and the number of the hole grooves from outside to inside is 15 holes, 9 holes and 6 holes in sequence.
6. The device for diluting, mixing and sampling culture of water quality five-day biochemical oxygen demand samples according to claim 1, wherein the stirring rod (3) is fixed at a middle hole of the rubber piston (8), and the diameter of the middle hole is smaller than that of the stirring rod (3).
7. The device for diluting, mixing, sampling and culturing water quality five-day biochemical oxygen demand samples according to claim 1, wherein the grip (11) and the bottom plug (12) are made of rubber tubes.
8. The device for diluting, mixing and sampling culture of water quality five-day biochemical oxygen demand samples according to claim 4, wherein the sampling tube inlet (4) is a 2mL pipette, the connecting belt (5) is a rubber tube, and the sampling tube outlet (6) is a de-headed Pasteur pipette.
9. The device for diluting, mixing and sampling culture of water quality five-day biochemical oxygen demand samples according to claim 8, wherein the diameter of the connecting band (5) is far smaller than the outer diameters of the sampling tube inlet (4) and the sampling tube outlet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993412.4U CN220132202U (en) | 2023-04-27 | 2023-04-27 | Be used for five day biochemical oxygen demand sample dilution mixing sampling culture device of quality of water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320993412.4U CN220132202U (en) | 2023-04-27 | 2023-04-27 | Be used for five day biochemical oxygen demand sample dilution mixing sampling culture device of quality of water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220132202U true CN220132202U (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320993412.4U Active CN220132202U (en) | 2023-04-27 | 2023-04-27 | Be used for five day biochemical oxygen demand sample dilution mixing sampling culture device of quality of water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220132202U (en) |
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2023
- 2023-04-27 CN CN202320993412.4U patent/CN220132202U/en active Active
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