阅读说明：本技术 一种智慧型甲醛检测系统 (Intelligent formaldehyde detection system ) 是由 邵晓林 王旭光 朱远 胡希蒙 施丽君 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种智慧型甲醛检测系统,包括自动采样系统、自动进样测试系统和标准曲线自动检测系统；自动采样系统用于收集试样检测物；自动进样检测系统用于将对比检测物和自动采集系统中的试样检测物传输到比色皿中进行对比检测；标准曲线自动检测系统用于建模分析比色皿中的检测数值构成的检测曲线并计算结果。本发明能够提高甲醛检测的智能化,降低人工投入,提高工作效率,更好的提供科学、智能、绿色、高效的检测。(The invention discloses an intelligent formaldehyde detection system, which comprises an automatic sampling system, an automatic sample introduction test system and a standard curve automatic detection system; the automatic sampling system is used for collecting a sample detection object; the automatic sample introduction detection system is used for transmitting a contrast detection object and a sample detection object in the automatic acquisition system to the cuvette for contrast detection; and the standard curve automatic detection system is used for modeling and analyzing a detection curve formed by detection values in the cuvette and calculating a result. The invention can improve the intellectualization of formaldehyde detection, reduce the labor input, improve the working efficiency and better provide scientific, intelligent, green and efficient detection.)

1. An intelligent formaldehyde detection system is characterized by comprising an automatic sampling system (1), an automatic sample introduction test system and a standard curve automatic detection system (3);

the automatic sampling system (1) is used for collecting a sample detection object;

the automatic sample introduction detection system (2) is used for transmitting a contrast detection object and a sample detection object in the automatic acquisition system to the cuvette for contrast detection;

and the standard curve automatic detection system (3) is used for drawing a standard curve for comparing the mass concentration and the absorbance of the detected substance and acquiring the detected substance of the sample.

2. The intelligent formaldehyde detection system according to claim 1, wherein the autosampler detection system (2) comprises a first mixer (61) for preparing the sample detection substance, a second mixer (62) for preparing the contrast detection substance, a peristaltic pump M14 and a peristaltic pump M16, the cuvettes comprise a first cuvette (51) and a second cuvette (52), the first mixer (61) is connected to the autosampling system (1), the second mixer (62) is connected to the contrast detection substance, the first mixer (61) and the second mixer (62) are connected to the first cuvette (51) and the second cuvette (52) through the peristaltic pump M14 and the peristaltic pump M16, respectively, to transmit the sample detection substance and the contrast detection substance to the first cuvette (51) and the second cuvette (52), respectively, the standard curve autosampler detection system (3) models the detection substance in the first cuvette (51) and the second cuvette (52) by modeling the cuvette (51) and the second cuvette (52), respectively The detected values are subjected to curve analysis and the results are calculated.

3. The intelligent formaldehyde detection system according to claim 2, further comprising a stock-out system (4) connected to both the first cuvette (51) and the second cuvette (52), the stock-out system (4) comprising a peristaltic pump M15, a peristaltic pump M17, and a waste liquid storage device (7); the peristaltic pump M15 is connected between the first colorimetric dish (51) and the waste liquid storage device (7) and is used for extracting waste liquid from the first colorimetric dish (51); the peristaltic pump M17 is connected between the second cuvette (52) and the waste liquid storage device (7) and is used for extracting the waste liquid of the second cuvette (52).

4. The intelligent formaldehyde detection system according to claim 2, wherein the first mixer (61) and the second mixer (62) are disposed on an oscillator (81), and the oscillator (81) oscillates the first mixer (61) and the second mixer (62).

5. The intelligent formaldehyde detection system according to claim 4, wherein the oscillator (81) is provided with a heater (82) for heating the first mixer (61) and the second mixer (62), or the first mixer (61) and the second mixer (62) are provided with heaters (82) for heating.

6. The intelligent formaldehyde detection system according to claim 3, wherein the first cuvette (51) and the second cuvette (52) each comprise a self-cleaning assembly, a sample chamber (92), and a functional chamber (93), the self-cleaning assembly comprises a sample inlet tube (91) having a spray port and a sample inlet and disposed in the functional chamber (93), one end of the sample inlet tube (91) passes through a chamber wall of the functional chamber (93) to be connected with the peristaltic pump M14 or the peristaltic pump M16 and fixed with the chamber wall of the functional chamber (93), and the spray port of the sample inlet tube (91) enters the sample chamber (92) to feed atomized sample test substances or contrast test substances.

7. The intelligent formaldehyde detection system according to claim 6, wherein an isolation layer (94) is disposed between the functional chamber (93) and the sample chamber (92), a through hole (95) is formed in the isolation layer (94) at a position corresponding to the spray opening, and the aperture of the through hole (95) is larger than that of the spray opening.

8. The intelligent formaldehyde detection system according to claim 7, wherein a hollow flow guide tube (96) for guiding the liquid flowing down from the through hole (95) is further disposed in the functional chamber (93), and one end of the sample inlet tube (91) having a spray outlet is located inside the flow guide tube (96) and passes through the top of the flow guide tube (96) to enter the sample chamber (92) through the through hole (95); one end of the sample inlet pipe (91) with a sample inlet sequentially penetrates through the side wall of the flow guide pipe (96) and the wall of the functional bin (93), then is connected with the peristaltic pump M14 or the peristaltic pump M16 and is fixed with the side wall of the flow guide pipe (96), and the pipe diameter of the flow guide pipe (96) is larger than the aperture of the through hole (95); the other end of the guide pipe (96) opposite to the spray opening is connected with a peristaltic pump M15 or a peristaltic pump M17 to extract waste liquid.

9. The intelligent formaldehyde detection system according to claim 8, wherein the flow guide tube (96) is tapered, and the end of the sample inlet tube (91) having the spray outlet passes through the top of the flow guide tube (96) and then enters the sample chamber (92) through the through hole (95); the bottom of the flow guide pipe (96) is connected with a peristaltic pump M15 or a peristaltic pump M17.

10. The intelligent formaldehyde detection system according to claim 9, wherein the bottom of the flow guide tube (96) is shrunk to form a flow guide column (97), the bottom of the first cuvette (51) and the bottom of the second cuvette (52) are provided with outlets corresponding to the position of the flow guide tube (96) and connected with the peristaltic pump M15 and the peristaltic pump M17 respectively, the flow guide column (97) is located at the outlet position, and when the flow guide tube (96) guides the liquid, part of the liquid flows down along the outer tube wall of the flow guide tube (96) and is guided to the outlet through the flow guide column (97).

Technical Field

The invention relates to the technical field, in particular to an intelligent formaldehyde detection system.

Background

The current detection method for formaldehyde emission in artificial boards and furniture industries is gradually connected with the world, and the 1m3 climate box method is adopted to become the international development trend. The standard of products such as artificial boards, floors, wooden doors, metal furniture, children furniture and the like at home and abroad gradually adopts a 1m3 climate box method. The 1m3 climate box is only used for preprocessing of formaldehyde emission detection, many steps and work need manual processing during and after sampling, in order to increase the intellectualization of formaldehyde emission detection, reduce the manual investment and improve the work efficiency, scientific, intelligent, green and efficient detection service is better provided, and equipment research and development and transformation are carried out on the following steps of the 1m3 climate box.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an intelligent formaldehyde detection system which can improve the intellectualization of formaldehyde detection, reduce the labor input, improve the working efficiency and better provide scientific, intelligent, green and efficient detection.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent formaldehyde detection system comprises an automatic sampling system, an automatic sample introduction test system and a standard curve automatic detection system;

the automatic sampling system is used for collecting a sample detection object;

the automatic sample introduction detection system is used for transmitting a contrast detection object and a sample detection object in the automatic acquisition system to the cuvette for contrast detection;

and the standard curve automatic detection system is used for modeling and analyzing a detection curve formed by detection values in the cuvette and calculating a result.

As a further improvement of the present invention, the automatic sample feeding detection system includes a first mixer for preparing a sample detection substance, a second mixer for preparing a comparison detection substance, a peristaltic pump M14, and a peristaltic pump M16, the cuvette includes a first cuvette and a second cuvette, the first mixer is connected to the automatic sampling system, the second mixer is connected to the comparison detection substance, the first mixer and the second mixer are respectively connected to the first cuvette and the second cuvette through the peristaltic pump M14 and the peristaltic pump M16 to respectively transmit the sample detection substance and the comparison detection substance to the first cuvette and the second cuvette, and the standard curve automatic detection system performs curve analysis on detection values of the detection substances in the first cuvette and the second cuvette through modeling and calculates results.

As a further improvement of the invention, the device also comprises a sample discharge system connected with both the first cuvette and the second cuvette, wherein the sample discharge system comprises a peristaltic pump M15, a peristaltic pump M17 and a waste liquid storage device; the peristaltic pump M15 is connected between the first colorimetric dish and the waste liquid storage device and is used for pumping the waste liquid of the first colorimetric dish; and the peristaltic pump M17 is connected between the second cuvette and the waste liquid storage device and is used for pumping the waste liquid of the second cuvette.

As a further improvement of the present invention, the first mixer and the second mixer are both disposed on an oscillator, and the oscillator oscillates the first mixer and the second mixer.

As a further improvement of the present invention, a heater for heating the first mixer and the second mixer is provided on the oscillator, or a heater for heating is provided on both the first mixer and the second mixer.

As a further improvement of the invention, the first cuvette and the second cuvette both comprise a self-cleaning assembly, a sample bin and a functional bin, the self-cleaning assembly comprises a sample inlet pipe which is provided with a spray opening and a sample inlet and is arranged in the functional bin, one end of the sample inlet pipe penetrates through the bin wall of the functional bin to be connected with the peristaltic pump M14 or the peristaltic pump M16 and is fixed with the bin wall of the functional bin, and the spray opening of the sample inlet pipe enters the sample bin to feed atomized sample test objects or contrast test objects.

As a further improvement of the invention, an interlayer is arranged between the functional bin and the sample bin, a through hole is arranged on the interlayer corresponding to the position of the spray nozzle, and the aperture of the through hole is larger than that of the spray nozzle.

As a further improvement of the invention, a hollow flow guide pipe for guiding the liquid flowing down from the through hole is also arranged in the functional bin, and one end of the sample inlet pipe, which is provided with a spray nozzle, is positioned in the flow guide pipe and penetrates through the top of the flow guide pipe to enter the sample bin through the through hole; one end of the sample inlet pipe, which is provided with a sample inlet, sequentially penetrates through the side wall of the flow guide pipe and the wall of the functional bin, is connected with the peristaltic pump M14 or the peristaltic pump M16 and is fixed with the side wall of the flow guide pipe, and the pipe diameter of the flow guide pipe is larger than the aperture of the through hole; the other end of the guide pipe opposite to the spray opening is connected with a peristaltic pump M15 or a peristaltic pump M17 to extract waste liquid.

As a further improvement of the invention, the flow guide pipe is conical, and one end of the sample inlet pipe, which is provided with a spray nozzle, penetrates through the top of the flow guide pipe and then enters the sample bin through the through hole; the bottom of the flow guide pipe is connected with a peristaltic pump M15 or a peristaltic pump M17.

As a further improvement of the present invention, the bottom of the flow guiding tube is contracted to form a flow guiding column, the bottom of the first cuvette and the bottom of the second cuvette are provided with outlets corresponding to the flow guiding tube, the outlets are respectively connected with the peristaltic pump M15 and the peristaltic pump M17, the flow guiding column is located at the outlet position, and when the flow guiding tube guides the liquid, part of the liquid flows down along the outer tube wall of the flow guiding tube and is guided to the outlet through the flow guiding column to flow down.

The invention has the advantages that the automatic sampling system can be used for collecting the sample detection objects, namely formaldehyde is collected through the climate box, and the embodiment can not only be used for detecting formaldehyde, but also be used for other substances in the same detection step. Automatic sampling can avoid the current manual work to participate in complicated testing process, seriously takes up manual work. The automatic sample feeding detection system can automatically convey contrast detection objects and sample detection objects, the conveying process comprises reagent experiment steps such as gas washing, mixing and the like, manual gas transmission can be avoided through automatic transmission, in addition, the number of the cuvettes has various conditions, when the standard value of the detection objects is provided, only one cuvette can be provided, the detection is convenient, and the waste of detection reagents can be avoided; when the standard value of the detection object does not exist, a plurality of cuvettes are arranged, one cuvette stores distilled water and reagent, other cuvettes store liquid to be detected and reagent, the detection values of the contrast detection object and the sample detection object in the automatic analysis cuvettes are detected through a standard curve automatic detection system, for example, the value of absorbance is compared with a standard curve for analysis, and whether the current sample detection object meets the target range or not is judged.

Drawings

FIG. 1 is a schematic diagram of the overall system of the present invention;

FIG. 2 is a schematic view of a cuvette according to the present invention;

FIG. 3 is a schematic diagram of a schematic top view of a cuvette according to the present invention;

fig. 4 is a schematic view of the connection relationship of the components of the present invention.

Reference numerals: 1. an automatic sampling system; 2. an automatic sample introduction detection system; 3. a standard curve automatic detection system; 4. a stock layout system; 51. a first cuvette; 52. a second cuvette; 61. a first mixer; 62. a second mixer; 7. a waste liquid storage device; 81. an oscillator; 82. a heater; 91. a sample inlet pipe; 92. a sample bin; 93. a functional bin; 94. an interlayer; 95. a through hole; 96. a flow guide pipe; 97. and a flow guide column.

Detailed Description

The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.

Referring to fig. 1-4, the intelligent formaldehyde detecting system of the present embodiment includes an automatic sampling system 1, an automatic sample testing system, and a standard curve automatic detecting system 3;

the automatic sampling system 1 is used for collecting a sample detection object;

the automatic sample introduction detection system 2 is used for transmitting a contrast detection object and a sample detection object in the automatic acquisition system to the cuvette for contrast detection;

the standard curve automatic detection system 3 is used for modeling and analyzing a detection curve formed by detection values in the cuvette and calculating a result.

By the scheme, the sample detection object can be collected by the automatic sampling system 1, namely, formaldehyde is collected by the climate box, and the embodiment can be used for detecting formaldehyde and other substances in the same detection step. Automatic sampling can avoid the current manual work to participate in complicated testing process, seriously takes up manual work. Through the automatic sample injection detection system 2, the contrast detection object and the sample detection object can be automatically conveyed, the conveying process comprises reagent experiment steps such as gas washing, mixing and the like, manual gas transmission can be avoided through automatic transmission, in addition, the number of the cuvettes has various conditions, when the standard value of the detection object is provided, only one cuvette can be provided, the detection is convenient, and the waste of detection reagents can be avoided; when the standard value of the detection object does not exist, a plurality of cuvettes are arranged, one cuvette stores the contrast detection object (distilled water and reagent), other cuvettes store the sample detection object (liquid to be detected and reagent), the detection values of the contrast detection object and the sample detection object in the automatic analysis cuvettes are detected through the standard curve automatic detection system 3, for example, the value of absorbance is compared with the standard curve for analysis, and whether the current sample detection object meets the target range is judged.

In the scheme formed by the system, high intellectualization can be realized, and the defects of time and labor waste caused by manual operation can be avoided.

As a modified embodiment, the automatic sample feeding detection system 2 comprises a first mixer 61 for preparing a sample detection object, a second mixer 62 for preparing a contrast detection object, a peristaltic pump M14 and a peristaltic pump M16, the cuvette comprises a first cuvette 51 and a second cuvette 52, the first mixer 61 is connected to the automatic sampling system 1, the second mixer 62 is connected to a comparative test object, the first mixer 61 and the second mixer 62 are connected to the first cuvette 51 and the second cuvette 52 by a peristaltic pump M14 and a peristaltic pump M16, respectively, to deliver the sample and contrast analytes to the first and second cuvettes 51 and 52, the automatic standard curve detection system 3 performs curve analysis on the detection values of the detection objects in the first cuvette 51 and the second cuvette 52 through modeling and calculates the result.

When autoinjection detecting system 2 transmission sample detection thing and contrast detection thing, carry the sample detection thing through peristaltic pump M14 and give first colorimetric ware 51, carry the contrast detection thing through peristaltic pump M16 and give second colorimetric ware 52, realize automatic transportation from this to the peristaltic pump can not be direct and the contact of detection thing, through the mode transmission detection thing of extrusion conveyer pipe, make the detection thing can not contaminated, and the testing result is more accurate.

As a modified specific embodiment, the device further comprises a sample discharge system 4 connected with the first cuvette 51 and the second cuvette 52, wherein the sample discharge system 4 comprises a peristaltic pump M15, a peristaltic pump M17 and a waste liquid storage device 7; the peristaltic pump M15 is connected between the first colorimetric dish 51 and the waste liquid storage device 7 and is used for pumping the waste liquid of the first colorimetric dish 51; the peristaltic pump M17 is connected between the second cuvette 52 and the waste liquid storage 7, and is used for pumping the waste liquid of the second cuvette 52.

Through above-mentioned technical scheme, utilize peristaltic pump M15 and peristaltic pump M17 can directly extract the detection thing of accomplishing in first colorimetric ware 51 and the second colorimetric ware 52 and exist among the waste liquid storage device 7 with it, and utilize the mode that the peristaltic pump is connected with the colorimetric ware can accomplish automatic stock layout, make whole flow full automatization, from gathering, detect, assay to stock layout, can the full automation accomplish, and through many times of periodic cycle, can reduce the cost of labor greatly. Therefore, the problem that in the formaldehyde test, the sampling is not needed on the 1 st day of the test can be solved; samples were then taken 2 times per day from day 2 to day 5. After the first 3 days, sampling was stopped if a steady state was reached (deviation between the mean and maximum or minimum of formaldehyde concentration for the last 4 measurements was less than 5% or less than 0.005mg/m 3). The average value of the formaldehyde concentration values measured in the last 4 times is the formaldehyde emission of the test piece. The detection in the above process takes 43 days at most, one sample usually needs great effort and time for detection personnel to complete the detection of the formaldehyde emission, and the workload of simultaneous detection of a plurality of samples is conceivable and easy to cause errors due to human reasons. This is not only a problem in one department and unit, but is a stumbling block that hinders the development of the entire industry.

More specifically, the prior art tests were carried out manually by first placing 2 500mm x 500mm test pieces into a climate chamber of constant temperature and humidity (23 ℃ ± 1 ℃, 50% ± 5%) for equilibration for 15d, then taking out the test pieces and sealing the test pieces with an aluminum tape containing no formaldehyde, and then placing the test pieces into the climate chamber to test the formaldehyde emission. Every time the formaldehyde concentration in the climatic chamber is tested, at least 120L of gas is pumped from the climatic chamber to pass through 2 absorption bottles filled with 25ml of distilled water, then the solution in the 2 absorption bottles is mixed, 10ml of absorption solution is taken by a pipette and transferred to a 50ml volumetric flask, 10ml of acetylacetone solution and 10ml of ammonium acetate solution are added, a bottle plug is plugged, the mixture is shaken up and then is put into a water tank at 60 ℃ to be heated for 10min, and then the yellowish green solution is stored for about 1h at room temperature in a dark place. The sample was zeroed at a wavelength of 412nm on a spectrophotometer with distilled water as the control solution. The absorbance As of the absorption solution was measured using a cuvette with a 50mm optical path. Meanwhile, distilled water is used for replacing absorption liquid, and the same method is adopted for blank test to determine a blank value Ab. And finally, substituting the obtained data into a formula to calculate the formaldehyde concentration of the air in the climate box.

As a modified specific embodiment, the first mixer 61 and the second mixer 62 are both disposed on an oscillator 81, and the oscillator 81 oscillates the first mixer 61 and the second mixer 62.

Through above-mentioned technical scheme, can let first blender 61 and second blender 62 carry out more abundant mixture through oscillator 81, let the detection thing among the intelligent detection distribute more evenly in the solvent, let detection effect more accurate.

As a modified specific embodiment, the oscillator 81 is provided with a heater 82 for heating the first mixer 61 and the second mixer 62, or the first mixer 61 and the second mixer 62 are both provided with heaters 82 for heating.

Through above-mentioned technical scheme, first blender 61 and second blender 62 are all through shaking and heating control variable for the sample detects thing and contrast detection thing and dissolve more evenly, further improve standard curve automatic check out system 3's accuracy.

As a modified specific embodiment, the first cuvette 51 and the second cuvette 52 each include a self-cleaning assembly, a sample chamber 92, and a functional chamber 93, the self-cleaning assembly includes a sample inlet tube 91 having a spray opening and a sample inlet and disposed in the functional chamber 93, one end of the sample inlet tube 91 passes through a chamber wall of the functional chamber 93 to be connected with the peristaltic pump M14 or the peristaltic pump M16, and is fixed with the chamber wall of the functional chamber 93, and the spray opening of the sample inlet tube 91 enters the sample chamber 92 to deliver the atomized sample test substance or the contrast test substance.

Through the technical scheme, the atomizing nozzle is capillary spraying, utilize the principle that high-speed rivers break into the water droplet after touching the barrier, spray the sample after mixing evenly and test the color comparison in sample storehouse 92, the cell cooperation peristaltic pump carries out automatic sample sending and row appearance, wherein, send the appearance to first cell 51 through peristaltic pump M14, send the appearance to second cell 52 through peristaltic pump M16, spray sample detection thing and contrast detection thing in sample storehouse 92 through the atomizing nozzle of sample inlet pipe 91 after sending the appearance, make its even dispersion in sample storehouse 92, the standard curve automatic check out system 3 of being convenient for detects the absorbance to carry out the testing analysis after obtaining the absorbance data and obtain the comparison result. In addition, distilled water can be obtained through the peristaltic pump M10 and the peristaltic pump M13 of the first mixer 61 and the second mixer 62 to clean the first mixer 61 and the second mixer 62, and meanwhile, the distilled water for cleaning can be continuously sprayed through the spray nozzle through the peristaltic pump M14 and the peristaltic pump M16, so that the distilled water can be fully dispersed in the sample bin 92, the sample bin 92 can be completely cleaned, a good cleaning effect is achieved, the mixer and the cuvette can be cleaned together at one time after repeated for many times, resources are fully utilized, after each cleaning, the waste liquid after cleaning is discharged through the peristaltic pump M15 and the peristaltic pump M17, full-automatic cleaning is achieved, and the detection process is highly intelligent. And the sample inlet of the sample inlet pipe 91 passes through the functional bin 93 and is fixed, so that the sample inlet pipe 91 can be assembled by utilizing the bin wall of the functional bin 93, resources are fully utilized, and the assembly is carried out without extra waste of resources. The self-cleaning assembly can not only improve the detection effect, but also improve the cleaning effect.

As a modified specific embodiment, an interlayer 94 is arranged between the functional cabin 93 and the sample cabin 92, a through hole 95 is formed in the interlayer 94 at a position corresponding to the spray opening, and the aperture of the through hole 95 is larger than that of the spray opening.

Because the test object of advancing appearance pipe 91 nozzle spun is the test object after atomizing, spreads in whole sample storehouse 92 during its flowing back, is difficult to concentrate the flowing back, carries out the separation with sample storehouse 92 through interlayer 94, can let the test object of liquefaction in sample storehouse 92 concentrate the flowing back through-hole 95, the peristaltic pump M15 and peristaltic pump M17 of being convenient for discharge the waste liquid, the space of through-hole 95 is greater than the nozzle, can avoid the liquid that flows down in the through-hole 95 to hinder the nozzle and continue to spout the test object. The liquid can be discharged while the ejected detection object continues to be detected, the detection effect is better, and the density of the detection object in the sample bin 92 can be kept.

A hollow guide pipe 96 for guiding the liquid flowing down from the through hole 95 is further arranged in the functional bin 93, and one end of the sampling pipe 91 with a spray nozzle is positioned in the guide pipe 96, penetrates through the top of the guide pipe 96 and then enters the sample bin 92 through the through hole 95; one end of the sample inlet pipe 91 with a sample inlet sequentially penetrates through the side wall of the flow guide pipe 96 and the bin wall of the functional bin 93, then is connected with the peristaltic pump M14 or the peristaltic pump M16 and is fixed with the side wall of the flow guide pipe 96, and the pipe diameter of the flow guide pipe 96 is larger than the aperture of the through hole 95; the other end of the guide pipe 96 opposite to the spray opening is connected with a peristaltic pump M15 or a peristaltic pump M17 to extract waste liquid.

Can let the liquid that falls down in the through-hole 95 carry out the drainage along the outer pipe wall of honeycomb duct 96 through honeycomb duct 96, avoid liquid to splash after low-rise in the through-hole 95, pollute parts such as bulkhead in the function storehouse 93, it is fixed through the lateral wall with honeycomb duct 96, can fix honeycomb duct 96 simultaneously, the honeycomb duct 96 installation of being convenient for, and advance appearance pipe 91 is located honeycomb duct 96 inside, can avoid advancing appearance pipe 91 to pollute through honeycomb duct 96, make the flowing back effect better, and do not obstruct nozzle blowout test article, honeycomb duct 96's pipe diameter is greater than the aperture of through-hole 95 in addition, consequently the test article that flows down in through-hole 95 can both fall on honeycomb duct 96 lowly, carry out the drainage through honeycomb duct 96, improve the drainage effect.

More specifically, the flow guide tube 96 is conical, and one end of the sample inlet tube 91 with a spray nozzle passes through the top of the flow guide tube 96 and then enters the sample chamber 92 through the through hole 95; the bottom of the flow guide pipe 96 is connected with a peristaltic pump M15 or a peristaltic pump M17.

The conical flow guide tube 96 can prevent the detection object dropping in the through hole 95 from splashing on the outer tube wall of the flow guide tube 96, and can smoothly guide the detection object to the bottom for liquid drainage.

Furthermore, the bottom of the flow guide tube 96 is contracted to form a flow guide column 97, outlets respectively connected with the peristaltic pump M15 and the peristaltic pump M17 are arranged at positions, corresponding to the flow guide tube 96, of the bottoms of the first cuvette 51 and the second cuvette 52, the flow guide column 97 is located at the outlet position, and when the flow guide tube 96 guides liquid, part of the liquid flows down along the outer pipe wall of the flow guide tube 96 and is guided to flow down to the outlet through the flow guide column 97.

The bottom of the draft tube 96 is contracted to form a flow guide column 97, and the liquid drained from the outer pipe wall of the draft tube 96 is continuously concentrated through the flow guide column 97, so that the concentration effect of drainage is further improved. Making drainage more efficient.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.