CN112526063B - Device for detecting toxicity of organic matters - Google Patents
Device for detecting toxicity of organic matters Download PDFInfo
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- CN112526063B CN112526063B CN202011124924.4A CN202011124924A CN112526063B CN 112526063 B CN112526063 B CN 112526063B CN 202011124924 A CN202011124924 A CN 202011124924A CN 112526063 B CN112526063 B CN 112526063B
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- 230000001988 toxicity Effects 0.000 title claims abstract description 25
- 231100000419 toxicity Toxicity 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000001514 detection method Methods 0.000 claims abstract description 68
- 238000005086 pumping Methods 0.000 claims abstract description 37
- 239000000126 substance Substances 0.000 claims abstract description 23
- 239000011148 porous material Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000005416 organic matter Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 8
- 241000251468 Actinopterygii Species 0.000 description 5
- 239000012855 volatile organic compound Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- G01N33/18—Water
- G01N33/186—Water using one or more living organisms, e.g. a fish
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Abstract
本发明公开了一种用于检测有机物毒性的装置，旨在解决易挥发有机物毒性检测时容易出现漏气现象，而且水中的有机会挥发到空气中降低水中有机物的浓度，影响检测数据的精准度的不足。该发明包括封闭的检测箱、活塞筒，检测箱内装有水，检测箱底部连通进气管，进气管内安装单向进气阀；检测箱上部和活塞筒底部连通，活塞筒内安装吸气活塞，检测箱内安装连接座、转轴，连接座上设有抽水腔，抽水腔下部连通进水管和排水管，进水管插装到水中，检测箱内上部位置安装若干落水管，排水管与落水管连通，落水管上密布设置若干出水细孔；转轴上卷绕拉绳，拉绳连接在吸气活塞上，转轴上连接主动转盘，主动转盘和抽水活塞之间铰接抽水连杆。
The invention discloses a device for detecting the toxicity of organic substances, which aims to solve the problem that air leakage is easy to occur when the toxicity of volatile organic substances is detected, and the organic substances in the water have the opportunity to volatilize into the air to reduce the concentration of organic substances in the water and affect the accuracy of detection data. of insufficiency. The invention includes a closed detection box and a piston cylinder, the detection box is filled with water, the bottom of the detection box is connected with an air intake pipe, and a one-way intake valve is installed in the air intake pipe; the upper part of the detection box is communicated with the bottom of the piston cylinder, and a suction piston is installed in the piston cylinder , A connecting seat and a rotating shaft are installed in the detection box, and there is a pumping cavity on the connecting seat. The lower part of the pumping cavity is connected to the water inlet pipe and the drain pipe. The water inlet pipe is inserted into the water. A number of water outlet pores are densely arranged on the downspout; a pull rope is wound on the rotating shaft, and the pull rope is connected to the suction piston;
Description
技术领域technical field
本发明涉及一种有机物毒性检测技术，更具体地说，它涉及一种用于检测有机物毒性的装置。The present invention relates to an organic substance toxicity detection technology, more particularly, it relates to a device for detecting organic substance toxicity.
背景技术Background technique
目前对有机物毒性进行检测一般是将有机物滴定到检测箱内的水中，观察养在水中鱼群的存活状态，以此来检测有机物的毒性。但是现在没有专门用于检测有机物毒性的设备，在整个检测过程中水中的有机物容易挥发，会降低水中有机物的浓度，从而降低被污染水体的毒性，影响检测数据的精准度。At present, the toxicity of organic matter is generally detected by titrating the organic matter into the water in the detection box, and observing the survival state of the fish raised in the water, so as to detect the toxicity of the organic matter. However, there is no equipment specially used to detect the toxicity of organic substances. During the whole detection process, the organic substances in the water are easy to volatilize, which will reduce the concentration of organic substances in the water, thereby reducing the toxicity of the polluted water and affecting the accuracy of the detection data.
发明内容SUMMARY OF THE INVENTION
本发明克服了易挥发有机物毒性检测时容易出现漏气现象，而且水中的有机会挥发到空气中降低水中有机物的浓度，影响检测数据的精准度的不足，提供了一种用于检测有机物毒性的装置，易挥发有机物毒性检测时不易出现漏气现象，而且挥发到空气中的有机物不断回流到水体中，保证了检测数据的精准度。The invention overcomes the problem of easy air leakage during the toxicity detection of volatile organic compounds, and the organic matter in the water has the opportunity to volatilize into the air to reduce the concentration of the organic compounds in the water, which affects the accuracy of the detection data, and provides a method for detecting the toxicity of organic compounds. The device is not prone to air leakage during the toxicity detection of volatile organic compounds, and the organic compounds volatilized into the air continue to flow back into the water body, ensuring the accuracy of the detection data.
为了解决上述技术问题，本发明采用以下技术方案：一种用于检测有机物毒性的装置，包括封闭的检测箱、活塞筒，检测箱内装有水，检测箱底部连通进气管，进气管开口端高于水面高度，进气管内安装单向进气阀；检测箱上部和活塞筒底部连通，活塞筒内安装吸气活塞，活塞筒外安装由电机带动转动的齿轮，吸气活塞上连接齿条，齿轮与齿条啮合传动，检测箱内安装连接座、转轴，连接座上设有抽气腔、抽水腔，抽气腔内安装抽气活塞，抽水腔内安装抽水活塞，抽气活塞上设有进气孔，进气孔内安装单向抽气阀，抽气腔下部连通排气管，排气管内安装单向排气阀，排气管插装在水中；抽水腔下部连通进水管和排水管，进水管中安装单向进水阀，排水管中安装单向排水阀，进水管插装到水中，检测箱内上部位置安装若干落水管，排水管与落水管连通，落水管上密布设置若干出水细孔；转轴上卷绕拉绳，拉绳连接在吸气活塞上，转轴上连接主动转盘，主动转盘传动连接从动转盘，主动转盘和抽水活塞之间铰接抽水连杆，从动转盘和抽气活塞之间铰接抽气连杆。In order to solve the above-mentioned technical problems, the present invention adopts the following technical scheme: a device for detecting the toxicity of organic substances, comprising a closed detection box and a piston cylinder, the detection box is filled with water, the bottom of the detection box is connected to an air intake pipe, and the open end of the air intake pipe is high At the height of the water surface, a one-way intake valve is installed in the intake pipe; the upper part of the detection box is connected to the bottom of the piston cylinder, the suction piston is installed in the piston cylinder, the gear driven by the motor is installed outside the piston cylinder, and the rack is connected to the suction piston. The gear and the rack are meshed for transmission, and a connecting seat and a rotating shaft are installed in the detection box. The connecting seat is provided with an air pumping cavity and a water pumping cavity. The air pumping cavity is installed with a pumping piston. Air intake hole, a one-way air extraction valve is installed in the air intake hole, the lower part of the air extraction cavity is connected to an exhaust pipe, a one-way exhaust valve is installed in the exhaust pipe, and the exhaust pipe is inserted into the water; the lower part of the water extraction cavity is connected to the water inlet pipe and the drain Install a one-way water inlet valve in the water inlet pipe, install a one-way drain valve in the drain pipe, insert the water inlet pipe into the water, install a number of downpipes in the upper part of the detection box, the drain pipe is connected with the downspout, and the downpipe is densely arranged with a number of water outlet pipes. Hole; a pull rope is wound on the rotating shaft, the pull rope is connected to the suction piston, the rotating shaft is connected to the active turntable, the active turntable is driven to connect the driven turntable, the pumping connecting rod is hinged between the active turntable and the pumping piston, and the driven turntable and the suction The suction connecting rod is hinged between the pistons.
易挥发有机物进行毒性检测时，在检测箱内装入一定量的水，然后在水中养鱼，之后加入一定量的待测有机物，根据设定的有机物浓度，计算需要加入有机物的量，最后将检测箱密封。电机带动齿轮转动，齿轮与齿条啮合使齿条带动吸气活塞向远离检测箱方向移动，对检测箱内进行抽气，检测箱内的压力降低，使进气管向检测箱内充气，空气充入水中给鱼群提供充足的氧气。吸气活塞向远离检测箱方向移动的过程中通过拉绳拉动转轴转动，转轴上的主动转盘转动并带动从动转盘一起转动。主动转盘转动使抽水连杆拉动抽水活塞往复移动，通过进水管从检测箱水体中抽水到抽水腔内并通过排水管输送到落水管中，最后从落水管上的出水细孔排向检测箱内，排水的水流在下落的过程中带走挥发在检测箱内空气中的有机物，使空气中的有机物随水流不断回到水中。另一方面，从动转盘转动使抽气连杆带动抽气活塞往复移动，通过进气孔将检测箱内的空气抽入抽气腔内，并通过排气管排向检测箱内的水体中，使挥发在检测箱内水面上方空气中的有机物不断充入水中。这种用于检测有机物毒性的装置对易挥发有机物毒性检测时不易出现漏气现象，而且挥发到空气中的有机物不断回流到水体中，保证了检测数据的精准度。When volatile organic compounds are tested for toxicity, put a certain amount of water in the detection box, then raise fish in the water, and then add a certain amount of organic matter to be tested. According to the set concentration of organic matter, calculate the amount of organic matter that needs to be added. Box sealed. The motor drives the gear to rotate, and the gear meshes with the rack, so that the rack drives the suction piston to move away from the detection box, and the detection box is pumped. Enter the water to provide sufficient oxygen to the fish. During the process of the suction piston moving away from the detection box, the rotating shaft is pulled by the rope to rotate, and the active turntable on the rotating shaft rotates and drives the driven turntable to rotate together. The rotation of the active turntable makes the pumping rod pull the pumping piston to move back and forth, pump water from the water body of the detection box to the pumping cavity through the water inlet pipe, and transport it to the downspout through the drain pipe, and finally discharge the water from the outlet hole on the downspout to the detection box. The water flow takes away the organic matter volatilized in the air in the detection box during the falling process, so that the organic matter in the air continuously returns to the water with the water flow. On the other hand, the rotation of the driven turntable makes the suction rod drive the suction piston to move back and forth, and the air in the detection box is sucked into the suction chamber through the air inlet, and is discharged into the water body in the detection box through the exhaust pipe. , so that the organic matter volatilized in the air above the water surface in the detection box is continuously filled into the water. The device for detecting the toxicity of organic substances is not prone to air leakage when detecting the toxicity of volatile organic substances, and the organic substances volatilized into the air are continuously returned to the water body, which ensures the accuracy of the detection data.
作为优选，抽气活塞上和进气孔连通有送气管，送气管为柔性管，送气管端部连接在吸气活塞下端。送气管端部连接在吸气活塞下端，始终对吸气活塞下端位置进行抽气，而在吸气活塞向外拉动抽气的过程中易挥发的有机会容易漂动到吸气活塞位置，送气管对该位置进行抽气，能吸取更多挥发到空气中的有机物。Preferably, an air supply pipe is communicated with the air inlet hole on the air suction piston, the air supply pipe is a flexible pipe, and the end of the air supply pipe is connected to the lower end of the suction piston. The end of the air supply pipe is connected to the lower end of the suction piston, and the lower end of the suction piston is always pumped. During the process of pulling the suction piston outward, the volatile parts may easily float to the position of the suction piston. The trachea is used to extract air from this position, which can absorb more organic matter volatilized into the air.
作为优选，活塞筒竖向布设，活塞筒下端连接在检测箱上端，活塞筒底部和检测箱上端之间设置连通孔。活塞筒布设方便。Preferably, the piston cylinder is arranged vertically, the lower end of the piston cylinder is connected to the upper end of the detection box, and a communication hole is provided between the bottom of the piston cylinder and the upper end of the detection box. The piston cylinder is easy to arrange.
作为优选，活塞筒端部连接定位端盖，定位端盖上设有定位孔，齿条适配贯穿定位孔。定位端盖对齿条起到了很好的定位作用。Preferably, the end of the piston cylinder is connected to a positioning end cover, the positioning end cover is provided with a positioning hole, and the rack is adapted to pass through the positioning hole. The positioning end cover plays a good role in positioning the rack.
作为优选，进气管开口端安装过滤网。过滤网可对流入进气管的空气进行过滤。Preferably, a filter screen is installed at the open end of the air intake pipe. The filter screen filters the air flowing into the intake pipe.
作为优选，进气管内过滤网和单向进气阀之间安装防水透气膜。防水透气膜起到了很好的透气防水效果。Preferably, a waterproof and breathable membrane is installed between the filter screen in the air intake pipe and the one-way air intake valve. The waterproof breathable membrane has a good breathable and waterproof effect.
作为优选，检测箱上端安装支架，齿轮转动安装在支架上端。支架方便了电机和齿轮的安装。Preferably, a bracket is installed on the upper end of the detection box, and the gear is rotatably installed on the upper end of the bracket. Brackets facilitate the installation of motors and gears.
作为优选，检测箱上部设有加药孔，加药孔内紧密安装密封塞。加药孔方便有机物的加入，密封塞对加药孔起到了很好的密封作用。Preferably, the upper part of the detection box is provided with a dosing hole, and a sealing plug is tightly installed in the dosing hole. The dosing hole is convenient for adding organic matter, and the sealing plug has a good sealing effect on the dosing hole.
作为优选，吸气活塞外壁上安装密封圈。密封圈保证了吸气活塞移动过程中的密封性能。Preferably, a sealing ring is installed on the outer wall of the suction piston. The sealing ring ensures the sealing performance during the movement of the suction piston.
作为优选，若干根落水管径向均布设置。落水管覆盖范围广，下落的水流对挥发的有机物吸附效果好。Preferably, several downpipes are radially evenly distributed. The downspout has a wide coverage area, and the falling water has a good adsorption effect on volatile organic compounds.
与现有技术相比，本发明的有益效果是：用于检测有机物毒性的装置对易挥发有机物毒性检测时不易出现漏气现象，而且挥发到空气中的有机物不断回流到水体中，保证了检测数据的精准度。Compared with the prior art, the beneficial effects of the present invention are: the device for detecting the toxicity of organic substances is less likely to cause air leakage when detecting the toxicity of volatile organic substances, and the organic substances volatilized into the air are continuously returned to the water body, ensuring the detection of volatile organic substances. accuracy of the data.
附图说明Description of drawings
图1是本发明的一种结构示意图；Fig. 1 is a kind of structural representation of the present invention;
图中：1、检测箱，2、活塞筒，3、进气管，4、单向进气阀，5、过滤网，6、防水透气膜，7、吸气活塞，8、齿轮，9、齿条，10、支架，11、定位端盖，12、定位孔，13、连接座，14、转轴，15、抽气腔，16、抽水腔，17、抽气活塞，18、抽水活塞，19、进气孔，20、单向抽气阀，21、排气管，22、单向排气阀，23、进水管，24、排水管，25、单向进水阀，26、单向排水阀，27、落水管，28、出水细孔，29、拉绳，30、主动转盘，31、从动转盘，32、抽水连杆，33、抽气连杆，34、送气管，35、连通孔，36、加药孔，37、密封塞。In the picture: 1. Detection box, 2. Piston cylinder, 3. Intake pipe, 4. One-way intake valve, 5. Filter, 6. Waterproof and breathable membrane, 7. Suction piston, 8. Gear, 9. Tooth Strip, 10, Bracket, 11, Positioning end cap, 12, Positioning hole, 13, Connecting seat, 14, Rotating shaft, 15, Pumping chamber, 16, Pumping chamber, 17, Pumping piston, 18, Pumping piston, 19, Air inlet, 20, one-way suction valve, 21, exhaust pipe, 22, one-way exhaust valve, 23, water inlet pipe, 24, drain pipe, 25, one-way water inlet valve, 26, one-way drain valve , 27, downpipe, 28, water outlet hole, 29, pull rope, 30, active turntable, 31, driven turntable, 32, pumping connecting rod, 33, suction connecting rod, 34, air supply pipe, 35, communicating hole, 36. Dosing hole, 37. Sealing plug.
具体实施方式Detailed ways
下面通过具体实施例，并结合附图，对本发明的技术方案作进一步的具体描述：Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present invention is further described in detail:
实施例：一种用于检测有机物毒性的装置（参见附图1），包括封闭的检测箱1、活塞筒2，检测箱内装有水，检测箱底部连通进气管3，进气管向上延伸，进气管开口端高于水面高度，进气管内安装单向进气阀4；进气管开口端安装过滤网5，进气管内过滤网和单向进气阀之间安装防水透气膜6。检测箱上部和活塞筒底部连通，活塞筒内安装吸气活塞7，活塞筒外安装由电机带动转动的齿轮8，吸气活塞上连接齿条9，齿轮与齿条啮合传动。检测箱上端安装支架10，齿轮转动安装在支架上端，活塞筒端部连接定位端盖11，定位端盖上设有定位孔12，齿条适配贯穿定位孔。Example: a device for detecting the toxicity of organic substances (see Figure 1), including a closed detection box 1, a piston cylinder 2, the detection box is filled with water, the bottom of the detection box is connected to an
检测箱内安装连接座13、转轴14，连接座上设有抽气腔15、抽水腔16，抽气腔内安装抽气活塞17，抽水腔内安装抽水活塞18，抽气活塞上设有进气孔19，进气孔内安装单向抽气阀20，抽气腔下部连通排气管21，排气管内安装单向排气阀22，排气管插装在水中；抽水腔下部连通进水管23和排水管24，进水管中安装单向进水阀25，排水管中安装单向排水阀26，进水管插装到水中，检测箱内上部位置安装若干落水管27，若干根落水管径向均布设置，排水管与落水管连通，落水管上密布设置若干出水细孔28；转轴上卷绕拉绳29，拉绳连接在吸气活塞上，转轴上连接主动转盘30，主动转盘传动连接从动转盘31，主动转盘和抽水活塞之间铰接抽水连杆32，从动转盘和抽气活塞之间铰接抽气连杆33。转轴上连接挡绳盘，拉绳置于主动转盘和挡绳盘之间。主动转盘和从动转盘边缘均设有齿圈，两齿圈啮合传动，转轴和从动转盘均转动安装在检测箱内。A connecting
抽气活塞上和进气孔连通有送气管34，送气管为柔性管，送气管端部连接在吸气活塞下端。活塞筒竖向布设，活塞筒下端连接在检测箱上端，活塞筒底部和检测箱上端之间设置连通孔35，拉绳和送气管均穿过连通孔，连通孔的孔径小于活塞筒内径。检测箱上部设有加药孔36，加药孔内紧密安装密封塞37。吸气活塞外壁上安装密封圈。An air supply pipe 34 is communicated with the air inlet hole on the air suction piston. The air supply pipe is a flexible pipe, and the end of the air supply pipe is connected to the lower end of the air suction piston. The piston cylinder is arranged vertically, the lower end of the piston cylinder is connected to the upper end of the detection box, a communication hole 35 is arranged between the bottom of the piston cylinder and the upper end of the detection box, the pull rope and the air supply pipe pass through the communication hole, and the diameter of the communication hole is smaller than the inner diameter of the piston cylinder. The upper part of the detection box is provided with a dosing hole 36, and a sealing plug 37 is tightly installed in the dosing hole. A sealing ring is installed on the outer wall of the suction piston.
易挥发有机物进行毒性检测时，在检测箱内装入一定量的水，然后在水中养鱼，之后加入一定量的待测有机物，根据设定的有机物浓度，计算需要加入有机物的量，最后将检测箱密封。电机带动齿轮转动，齿轮与齿条啮合使齿条带动吸气活塞向远离检测箱方向移动，对检测箱内进行抽气，检测箱内的压力降低，使进气管向检测箱内充气，空气充入水中给鱼群提供充足的氧气。吸气活塞向远离检测箱方向移动的过程中通过拉绳拉动转轴转动，转轴上的主动转盘转动并带动从动转盘一起转动。主动转盘转动使抽水连杆拉动抽水活塞往复移动，通过进水管从检测箱水体中抽水到抽水腔内并通过排水管输送到落水管中，最后从落水管上的出水细孔排向检测箱内，排水的水流在下落的过程中带走挥发在检测箱内空气中的有机物，使空气中的有机物随水流不断回到水中。另一方面，从动转盘转动使抽气连杆带动抽气活塞往复移动，通过进气孔将检测箱内的空气抽入抽气腔内，并通过排气管排向检测箱内的水体中，使挥发在检测箱内水面上方空气中的有机物不断充入水中。这种用于检测有机物毒性的装置对易挥发有机物毒性检测时不易出现漏气现象，而且挥发到空气中的有机物不断回流到水体中，保证了检测数据的精准度。When volatile organic compounds are tested for toxicity, put a certain amount of water in the detection box, then raise fish in the water, and then add a certain amount of organic matter to be tested. According to the set concentration of organic matter, calculate the amount of organic matter that needs to be added. Box sealed. The motor drives the gear to rotate, and the gear meshes with the rack, so that the rack drives the suction piston to move away from the detection box, and the detection box is pumped. Enter the water to provide sufficient oxygen to the fish. During the process of the suction piston moving away from the detection box, the rotating shaft is pulled by the rope to rotate, and the active turntable on the rotating shaft rotates and drives the driven turntable to rotate together. The rotation of the active turntable makes the pumping rod pull the pumping piston to move back and forth, pump water from the water body of the detection box to the pumping cavity through the water inlet pipe, and transport it to the downspout through the drain pipe, and finally discharge the water from the outlet hole on the downspout to the detection box. The water flow takes away the organic matter volatilized in the air in the detection box during the falling process, so that the organic matter in the air continuously returns to the water with the water flow. On the other hand, the rotation of the driven turntable makes the suction rod drive the suction piston to move back and forth, and the air in the detection box is sucked into the suction chamber through the air inlet, and is discharged into the water body in the detection box through the exhaust pipe. , so that the organic matter volatilized in the air above the water surface in the detection box is continuously filled into the water. The device for detecting the toxicity of organic substances is not prone to air leakage when detecting the toxicity of volatile organic substances, and the organic substances volatilized into the air continue to flow back into the water body, ensuring the accuracy of the detection data.
以上所述的实施例只是本发明较佳的方案，并非对本发明作任何形式上的限制，在不超出权利要求所记载的技术方案的前提下还有其它的变体及改型。The above-mentioned embodiments are only preferred solutions of the present invention, and do not limit the present invention in any form. There are other variations and modifications under the premise of not exceeding the technical solutions recorded in the claims.
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