CN112611858B - Toxicity experimental device for volatile organic compounds - Google Patents
Toxicity experimental device for volatile organic compounds Download PDFInfo
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- CN112611858B CN112611858B CN202011124921.0A CN202011124921A CN112611858B CN 112611858 B CN112611858 B CN 112611858B CN 202011124921 A CN202011124921 A CN 202011124921A CN 112611858 B CN112611858 B CN 112611858B
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- pipe
- organic compounds
- air outlet
- air inlet
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/5005—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells
- G01N33/5008—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics
- G01N33/5014—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving human or animal cells for testing or evaluating the effect of chemical or biological compounds, e.g. drugs, cosmetics for testing toxicity
Abstract
The invention discloses a toxicity test device for volatile organic compounds, and aims to overcome the defects that the gas leakage phenomenon is easy to occur in the toxicity test of the volatile organic compounds, and the toxicity of water is reduced because the organic compounds in water volatilize into the air, so that the accuracy of test data is influenced. The device comprises a closed experiment box and a piston cylinder, wherein water is filled in the experiment box, the bottom of the experiment box is communicated with an air inlet pipe, the opening end of the air inlet pipe is higher than the water level, and a one-way air inlet valve is arranged in the air inlet pipe; an exhaust pipe is communicated between the upper part of the experiment box and the piston cylinder, an exhaust piston is arranged in the piston cylinder, a rotating shaft is arranged outside the piston cylinder, a pull rope is wound on the rotating shaft, and the pull rope is connected to the exhaust piston; the annular pipe and the fan are installed in the experiment box, the lower portion of the annular pipe is arranged in water, the upper portion of the annular pipe is communicated with the air outlet pipe in a tangential mode, the air outlet pipe is connected with an air outlet of the fan, an air inlet of the fan is arranged above the water surface in the experiment box, and a plurality of air outlet holes are formed in the annular pipe at intervals in the portion arranged in the water.
Description
Technical Field
The invention relates to organic matter toxicity experimental equipment, in particular to a volatile organic matter toxicity experimental device.
Background
The toxicity experiment of present laboratory to volatile organic compounds makes and does not have dedicated equipment, and the outside volatile phenomenon of organic pollutant appears easily in the experimentation, has reduced the precision of experimental data, and the organic matter of aquatic volatilizees to the air in addition, reduces the organic matter concentration of aquatic to the toxicity of contaminated water has been reduced, influences experimental data.
Disclosure of Invention
The invention overcomes the defects that the air leakage phenomenon is easy to occur in the toxicity test of volatile organic compounds, and the organic compounds in water can volatilize into the air to reduce the toxicity of the water body and influence the accuracy of the test data, and provides the toxicity test device for the volatile organic compounds.
In order to solve the technical problems, the invention adopts the following technical scheme: the toxicity test device for the volatile organic compounds comprises a closed test box and a piston cylinder, wherein water is filled in the test box, the bottom of the test box is communicated with an air inlet pipe, the opening end of the air inlet pipe is higher than the water surface, and a one-way air inlet valve is arranged in the air inlet pipe; an exhaust pipe is communicated between the upper part of the experiment box and the piston cylinder, an exhaust piston is arranged in the piston cylinder, a rotating shaft is arranged outside the piston cylinder, a pull rope is wound on the rotating shaft, and the pull rope is connected to the exhaust piston; the annular pipe and the fan are installed in the experiment box, the lower portion of the annular pipe is arranged in water, the upper portion of the annular pipe is communicated with the air outlet pipe in a tangential mode, the air outlet pipe is connected with an air outlet of the fan, an air inlet of the fan is arranged above the water surface in the experiment box, a plurality of air outlet holes are formed in the annular pipe and are arranged in the water at intervals, an air outlet sleeve is tightly installed on each air outlet hole, and a one-way air outlet valve is installed in each air outlet sleeve.
When the volatile organic compounds are subjected to toxicity experiments, a certain amount of water is filled in the experiment box, then fish is cultured in the water, a certain amount of organic compounds to be tested are added, the amount of the organic compounds to be added is calculated according to the set concentration of the organic compounds, and finally the experiment box is sealed. The pull rope is wound by rotating the rotating shaft, so that the air exhaust piston is pulled outwards to exhaust air in the experiment box, the pressure in the experiment box is reduced, the air inlet pipe is inflated into the experiment box, and the air is inflated into water to provide sufficient oxygen for fish shoals. Meanwhile, the fan works to continuously blow the air above the water surface in the experiment box into the annular pipe and fill the air into the water through the air outlet sleeve on the annular pipe, so that the organic matters volatilized in the air above the water surface in the experiment box are continuously filled into the water. The volatile organic compound toxicity experiment device is not easy to leak gas during the toxicity experiment of volatile organic compounds, and organic compounds volatilized into the air continuously flow back to the water body, so that the accuracy of experiment data is ensured.
Preferably, the rubber ball is installed in the annular pipe, the outer wall of the rubber ball is provided with a plurality of poking needles, the outer wall of the annular pipe is provided with pressure reducing holes close to the air outlet pipe, and the pressure reducing holes are opposite to the air outlet direction of the air outlet pipe.
Air-out pipe blows to the ring pipe tangential, blow the rubber ball and remove along the ring pipe pipeline in the ring pipe, the rubber ball removes in-process and stabs the needle and can stab in the venthole, dredge the venthole, avoid the venthole blocking phenomenon to appear, and the rubber ball receives certain hindrance effect this moment, can block up in this position a period, the atmospheric pressure increase in the rubber ball rear ring pipe this moment is favorable to accelerating the exhaust velocity and the air displacement of rubber ball rear venthole, improve the effect of giving vent to anger. Because the air pressure in the annular pipe behind the rubber ball is increased, the rubber ball can be continuously blown forwards, and therefore the rubber ball circularly moves along the pipeline of the annular pipe.
Preferably, the rubber ball is a hollow ball. The hollow ball is light in weight and easy to blow, and is easy to deform, so that the hollow ball is prevented from being blocked in the annular pipe.
Preferably, a plurality of C-shaped blades are arranged on the outer wall of the rubber ball. The setting up of blade makes the rubber ball blow the rotation by the air current more easily, is favorable to the removal of rubber ball in the ring duct, and the pivoted rubber ball is convenient for stab the needle and stirs the venthole position simultaneously.
Preferably, the open end of the air inlet pipe is provided with a filter screen. The filter screen can filter the air flowing into the air inlet pipe.
Preferably, a waterproof breathable film is arranged between the filter screen and the one-way air inlet valve in the air inlet pipe. The waterproof breathable film has good breathable and waterproof effects.
Preferably, the two ends of the rotating shaft are provided with the rope blocking discs. The rope blocking disc blocks the pull rope wound on the rotating shaft and prevents the pull rope from sliding away from the rotating shaft.
Preferably, the upper part of the experiment box is provided with a dosing hole, and a sealing plug is tightly arranged in the dosing hole. The dosing hole is convenient for adding organic matters, and the sealing plug plays a good sealing role in the dosing hole.
Preferably, a sealing ring is installed on the outer wall of the air exhaust piston. The sealing performance of the air exhaust piston in the moving process is ensured by the sealing ring.
Compared with the prior art, the invention has the beneficial effects that: the volatile organic compound toxicity experiment device is not easy to leak gas during the experiment of the volatile organic compound toxicity, and the organic compound volatilized into the air continuously flows back to the water body, so that the accuracy of experiment data is ensured.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a rubber ball of the present invention;
FIG. 3 is an enlarged fragmentary schematic view of the annular tube exit orifice location of the present invention;
in the figure: 1. experiment box, 2, piston cylinder, 3, intake pipe, 4, one-way admission valve, 5, exhaust tube, 6, bleed piston, 7, pivot, 8, stay cord, 9, ring pipe, 10, fan, 11, play tuber pipe, 12, venthole, 13, play gas jacket, 14, one-way air outlet valve, 15, rubber ball, 16, stab the needle, 17, relief vent, 18, blade, 19, filter screen, 20, waterproof ventilated membrane, 21, keep off the rope dish, 22, add the medicine hole, 23, sealing plug.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
example (b): a volatile organic compounds toxicity experimental apparatus (refer to attached figure 1, attached figure 2, attached figure 3), including enclosed experimental box 1, piston cylinder 2, the experimental box is filled with water, the bottom of the experimental box communicates with the air intake pipe 3, the air intake pipe extends upwards, the open end of the air intake pipe is higher than the height of water surface, install the unidirectional air intake valve 4 in the air intake pipe; an air exhaust pipe 5 is communicated between the upper part of the experiment box and the piston cylinder, an air exhaust piston 6 is arranged in the piston cylinder, a rotating shaft 7 is arranged outside the piston cylinder, a pull rope 8 is wound on the rotating shaft, and the pull rope is connected to the air exhaust piston; the experiment box is internally provided with an annular pipe 9 and a fan 10, the fan is arranged on the inner wall of the experiment box, the lower part of the annular pipe is arranged in water, the upper part of the annular pipe is communicated with an air outlet pipe 11 in a tangential way, the air outlet pipe is connected with an air outlet of the fan, an air inlet of the fan is arranged above the water surface in the experiment box, a plurality of air outlet holes 12 are arranged on the annular pipe at intervals in the part arranged in the water, an air outlet sleeve 13 is closely arranged on the air outlet holes, and a one-way air outlet valve 14 is arranged in the air outlet sleeve. The outer wall of the air outlet sleeve is provided with a positioning convex ring, the air outlet sleeve is connected in the air outlet hole in a threaded manner, and the positioning convex ring is abutted against the outer wall of the annular pipe.
The intraductal installation rubber ball 15 of annular, be equipped with a plurality of stabs needle 16 on the rubber ball outer wall, be close to the tuber pipe position on the annular outer wall and be equipped with pressure release hole 17, the air-out direction of tuber pipe is gone back to in the pressure release hole. The rubber ball is a hollow ball. The outer wall of the rubber ball is provided with a plurality of C-shaped blades 18. The rubber ball external diameter and the pipe diameter looks adaptation of annular tube, the rubber ball removes the in-process and can take place to warp, guarantees that the rubber ball can remove in the annular tube.
The open end of the air inlet pipe is provided with a filter screen 19. A waterproof ventilated membrane 20 is arranged between the filter screen and the one-way air inlet valve in the air inlet pipe. Rope blocking discs 21 are arranged at both ends of the rotating shaft. The piston cylinder is transversely arranged on a bracket, a driving motor is arranged on the bracket, and an output shaft of the driving motor is in transmission connection with the rotating shaft. The upper part of the experimental box is provided with a dosing hole 22, and a sealing plug 23 is tightly arranged in the dosing hole. The outer wall of the air exhaust piston is provided with a sealing ring. The lower part of the experiment box is communicated with a water changing pipe, and a water changing valve is arranged on the water changing pipe.
When the volatile organic compounds are subjected to toxicity experiments, a certain amount of water is filled in the experiment box, then fish is cultured in the water, a certain amount of organic compounds to be tested are added, the amount of the organic compounds to be added is calculated according to the set concentration of the organic compounds, and finally the experiment box is sealed. The pull rope is wound by rotating the rotating shaft, so that the air exhaust piston is pulled outwards to exhaust air in the experiment box, the pressure in the experiment box is reduced, the air inlet pipe is inflated into the experiment box, and the air is inflated into water to provide sufficient oxygen for fish shoals. Meanwhile, the fan works to continuously blow the air above the water surface in the experiment box into the annular pipe and fill the air into the water through the air outlet sleeve on the annular pipe, so that the organic matters volatilized in the air above the water surface in the experiment box are continuously filled into the water. The rubber ball moves and rotates in the annular tube at one side, so that the poking needle easily slides through the air outlet hole to prevent the air outlet hole from being blocked. Stabbing the needle and stabbing the rubber ball and receive certain hindrance effect when the position of giving vent to anger, can block up in this position a period, the atmospheric pressure increase in the rubber ball rear ring tube this moment is favorable to accelerating the exhaust velocity and the displacement of air outlet behind the rubber ball, improves the effect of giving vent to anger. Because the air pressure in the annular pipe behind the rubber ball is increased, the rubber ball can be continuously blown forwards, and therefore the rubber ball circularly moves along the pipeline of the annular pipe. The volatile organic compound toxicity experiment device is not easy to leak gas during the toxicity experiment of volatile organic compounds, and organic compounds volatilized into the air continuously flow back to the water body, so that the accuracy of experiment data is ensured. The toxicity of the organic matters is judged by observing the vitality and survival time of the fish shoal in the experimental box.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.
Claims (8)
1. The toxicity test device for the volatile organic compounds is characterized by comprising a closed test box and a piston cylinder, wherein water is filled in the test box, the bottom of the test box is communicated with an air inlet pipe, the opening end of the air inlet pipe is higher than the water surface, and a one-way air inlet valve is arranged in the air inlet pipe; an exhaust pipe is communicated between the upper part of the experiment box and the piston cylinder, an exhaust piston is arranged in the piston cylinder, a rotating shaft is arranged outside the piston cylinder, a pull rope is wound on the rotating shaft, and the pull rope is connected to the exhaust piston; an annular pipe and a fan are arranged in the experiment box, the lower part of the annular pipe is arranged in water, the upper part of the annular pipe is tangentially communicated with an air outlet pipe, the air outlet pipe is connected with an air outlet of the fan, an air inlet of the fan is arranged above the water surface in the experiment box, a plurality of air outlet holes are arranged at intervals on the part of the annular pipe arranged in the water, an air outlet sleeve is tightly arranged on the air outlet holes, and a one-way air outlet valve is arranged in the air outlet sleeve; the rubber ball is installed in the annular pipe, is equipped with a plurality of stabs the needle on the rubber ball outer wall, is close to the tuber pipe position on the annular pipe outer wall and is equipped with the pressure release hole, and the air-out direction of tuber pipe is dorsad in the pressure release hole.
2. The toxicity testing apparatus for volatile organic compounds according to claim 1, wherein the rubber ball is a hollow ball.
3. The toxicity testing apparatus for volatile organic compounds according to claim 1, wherein the rubber ball has a plurality of C-shaped blades on the outer wall.
4. The toxicity testing apparatus for volatile organic compounds according to claim 1, wherein a filter screen is installed at the opening end of the air inlet pipe.
5. The toxicity test device for volatile organic compounds of claim 4, wherein a waterproof and breathable membrane is installed between the filter screen and the one-way air inlet valve in the air inlet pipe.
6. The toxicity testing apparatus for volatile organic compounds according to claim 1, wherein two ends of the rotating shaft are provided with rope stopping discs.
7. The toxicity test device of volatile organic compounds according to any one of claims 1 to 6, wherein the upper part of the test box is provided with a dosing hole, and a sealing plug is tightly arranged in the dosing hole.
8. The toxicity test device of volatile organic compounds according to any of the claims 1 to 6, wherein the outer wall of the air exhaust piston is provided with a sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124921.0A CN112611858B (en) | 2020-10-20 | 2020-10-20 | Toxicity experimental device for volatile organic compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011124921.0A CN112611858B (en) | 2020-10-20 | 2020-10-20 | Toxicity experimental device for volatile organic compounds |
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| Publication Number | Publication Date |
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| CN112611858A CN112611858A (en) | 2021-04-06 |
| CN112611858B true CN112611858B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011124921.0A Active CN112611858B (en) | 2020-10-20 | 2020-10-20 | Toxicity experimental device for volatile organic compounds |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2003029782A1 (en) * | 2001-09-27 | 2003-04-10 | Koken Boring Machine Co., Ltd. | Nondestructive method and device for investigating underground air, nondestructive method for controlling contamination of soil, and pressure partition used for the control |
| CN201689103U (en) * | 2010-04-16 | 2010-12-29 | 李绪霞 | Simple and easy experiment box for toxicity of volatility preparation |
| CN102589929B (en) * | 2011-01-15 | 2016-03-30 | 艾博生物医药(杭州)有限公司 | A kind of sample collection pick-up unit |
| CN108106928A (en) * | 2018-01-02 | 2018-06-01 | 吉林大学 | Opposite opened for modified ess-strain formula triaxial apparatus holds film cylinder |
| CN208043106U (en) * | 2018-05-07 | 2018-11-02 | 重庆佑威电子有限公司 | Examine waste discharge apparatus |
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