CN108459018B - Textile formaldehyde detection device and detection method - Google Patents
Textile formaldehyde detection device and detection method Download PDFInfo
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- CN108459018B CN108459018B CN201810660131.0A CN201810660131A CN108459018B CN 108459018 B CN108459018 B CN 108459018B CN 201810660131 A CN201810660131 A CN 201810660131A CN 108459018 B CN108459018 B CN 108459018B
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 154
- 239000004753 textile Substances 0.000 title claims abstract description 114
- 238000001514 detection method Methods 0.000 title claims abstract description 48
- 238000003825 pressing Methods 0.000 claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000004448 titration Methods 0.000 claims abstract description 21
- 230000008859 change Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 3
- 239000012085 test solution Substances 0.000 abstract description 18
- 229960004279 formaldehyde Drugs 0.000 description 37
- 235000019256 formaldehyde Nutrition 0.000 description 37
- 239000002904 solvent Substances 0.000 description 6
- 238000012546 transfer Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- HKOOXMFOFWEVGF-UHFFFAOYSA-N phenylhydrazine Chemical compound NNC1=CC=CC=C1 HKOOXMFOFWEVGF-UHFFFAOYSA-N 0.000 description 3
- 229940067157 phenylhydrazine Drugs 0.000 description 3
- 230000000638 stimulation Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 231100000378 teratogenic Toxicity 0.000 description 2
- 230000003390 teratogenic effect Effects 0.000 description 2
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010061619 Deformity Diseases 0.000 description 1
- 206010012434 Dermatitis allergic Diseases 0.000 description 1
- 206010064571 Gene mutation Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 206010040893 Skin necrosis Diseases 0.000 description 1
- 208000030961 allergic reaction Diseases 0.000 description 1
- 201000008937 atopic dermatitis Diseases 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000002740 effect on eyes Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002124 endocrine Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001605 fetal effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000171 higher toxicity Toxicity 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 210000001331 nose Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
- G01N21/79—Photometric titration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/16—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using titration
- G01N31/162—Determining the equivalent point by means of a discontinuity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The utility model provides a textile formaldehyde detection device and detection method, a textile formaldehyde detection device includes operation panel, titration subassembly, pushes down subassembly and conveying subassembly, and titration subassembly includes the first buret to the first test solution of textile dropwise add and to the second buret of textile dropwise add second test solution in proper order; the pressing component is used for pressing the position of the textile where the second test liquid is dripped; the conveying component is arranged on the operation table and is used for conveying the textile along the direction from the titration component to the pressing component, the first test liquid and the second test liquid are dripped on the textile, and the pressing component is combined, so that whether the textile contains formaldehyde or not can be detected in a few minutes, the formaldehyde detection time of the textile is shortened, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of formaldehyde content detection, and particularly relates to a textile formaldehyde detection device and a detection method.
Background
Formaldehyde is commonly called as formol, is colorless gas, has pungent and pungent smell, has stimulation effect on eyes, noses and the like of human bodies, has higher toxicity, is highly in the second place in a toxic chemical control list in China, has been determined to be a carcinogenic and teratogenic substance by world health organization, is a recognized allergic reaction source, is a potential strong mutation substance, but is widely applied to the fields of textiles, foods, furniture, building materials and the like due to low price and active reaction of formaldehyde.
The textile used in daily life contains free formaldehyde and formaldehyde which is released, the textile can generate extremely serious harm to human body after being contacted with the textile for a long time, the textile is directly or indirectly contacted with human skin, formaldehyde is used as an environmental sensitization source, allergic dermatitis, color spots and even skin necrosis can be caused, formaldehyde is most sensitive to the stimulation of glasses, a certain concentration of formaldehyde can lead eyes to red swelling and tearing, and after the volatilized formaldehyde enters the human body along with respiration, the formaldehyde has a strong stimulation effect on respiratory organs, and also has a certain influence on metabolism and endocrine of the human body, and the formaldehyde is used as a teratogenic substance, can cause gene mutation and even fetal deformity;
the whole flow of formaldehyde content determination in the textile industry detection field usually needs more than 1 hour, while the unqualified batches of formaldehyde content are detected in daily batch detection, and more laboratory manpower and material cost are occupied, so that the method is still further improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a textile formaldehyde detection device with short detection time, and also aims to provide a detection method for detecting textile formaldehyde by adopting the detection device.
The invention adopts the following technical scheme:
the utility model provides a textile formaldehyde detection device, includes operation panel, titration subassembly, pushes down subassembly and conveying subassembly, and titration subassembly includes the first buret to the textile dropwise add first test solution and to the second buret of textile dropwise add second test solution in proper order; the pressing component is used for pressing the position of the textile where the second test liquid is dripped; the conveying component is arranged on the operating platform and is used for conveying the textile along the direction from the titration component to the pressing component.
Further, the pressing component comprises a movable rod capable of moving up and down, a detection tissue wrapped at the front end of the movable rod and a driving device for driving the movable rod to move up and down.
Further, the driving device is an air cylinder.
Further, a pressure sensor is arranged on the movable rod.
Further, the conveying assembly comprises a first conveying cylinder, a second conveying cylinder, a conveying belt and a driving assembly, and the first conveying cylinder and the second conveying cylinder are respectively and rotatably arranged at two sides of the operating platform; the conveyor belt is arranged between the first conveyor cylinder and the second conveyor cylinder, one end of the conveyor belt is wound on the first conveyor cylinder, the other end of the conveyor belt is arranged on the second conveyor cylinder, and the conveyor belt is sent out under the rotation of the second conveyor cylinder; the driving assembly drives the first transmission cylinder to synchronously rotate with the second transmission cylinder, and comprises a first motor for driving the first transmission cylinder to rotate and a second motor for driving the second transmission cylinder to rotate.
Further, the table top of the operation table is made of transparent glass.
Further, a reflector for observing whether the textile after the first test liquid is dripped is arranged at the bottom of the operation table, and the reflector and the first burette are oppositely arranged.
Further, four control interfaces are arranged on the operation table, the first control interface is used for controlling the time interval between titration of the first test liquid and the second test liquid and controlling the scram of the conveying assembly, the second control interface is used for controlling the time interval between conveying the textiles titrated with the second test liquid to the pressing assembly, the third control interface is used for controlling the pressing times of the pressing assembly, and the fourth control interface is used for controlling the opening and closing of the device.
Further, a first electromagnetic valve and a second electromagnetic valve are respectively arranged on the first burette and the second burette.
A method for detecting formaldehyde in textile fabrics, which adopts the detection device of any one of the above steps, and comprises the following steps:
(1) Placing the textile on a conveying component, conveying the textile to the position below a first burette, dripping a first test liquid, waiting for a period of time, observing the color change of the conveying component below the textile, judging that the textile contains formaldehyde when the conveying component is dyed red, stopping detection, and continuously dripping a second test liquid when no color is displayed;
(2) And (3) starting the conveying assembly to convey the textile which is dripped with the second test liquid from the lower part of the second burette to the lower part of the pressing assembly, controlling the pressing assembly to press for a plurality of times, observing the color change of the pressing assembly, judging that the textile contains formaldehyde when the textile is dyed red, terminating detection, and if the textile is not colored, judging that the textile does not contain formaldehyde, and conveying the textile out of the operation table through the conveying assembly.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects: working principle: firstly, dripping a first test liquid into the textile by a first burette, observing the color change of a conveying component, stopping detection when the color change exists, dripping a second test liquid into the textile by a second burette when the color change exists, conveying the textile to the lower part of a pressing component for pressing down so as to detect the color change of the textile, stopping detection when the color change exists, and continuously conveying the textile out of an operation table by the conveying component when the color change exists; the pressing component comprises a moving rod, a detection paper towel and a driving device, so that whether the textile contains formaldehyde can be conveniently judged by detecting whether the paper towel is dyed under the condition that the textile is dark, and the judgment of the detection result is prevented from being interfered by the color of the textile; the reflective mirror is arranged below the first burette, so that whether the textile contains formaldehyde can be judged by observing whether the conveyor belt is dyed through the reflective mirror under the condition that the textile is dark, and the judgment of a detection result is prevented from being interfered by the color of the textile; the first magnetic valve and the second magnetic valve are respectively arranged on the first burette and the second burette, so that the titration amounts of the first test liquid and the second test liquid can be accurately controlled; the device can detect whether the textile contains formaldehyde in a few minutes by dripping the first test liquid and the second test liquid on the textile and combining the pressing component, thereby shortening the textile formaldehyde detection time and improving the working efficiency.
Drawings
FIG. 1 is a schematic diagram of a specific structure of the present invention;
FIG. 2 is a schematic structural diagram of the present invention;
in the figure, 1-console, 2-titration assembly, 3-hold down assembly, 4-transfer assembly, 5-control interface, 6-mirror, 7, textile, 8-control system, 11-table, 12-placement chamber, 21-first burette, 22-second burette, 23-first solenoid valve, 24-second solenoid valve, 25-first reagent bottle, 26-second reagent bottle, 27-first placement table, 28-second placement table, 31-movable rod, 32-test paper towel, 33-cylinder, 34-rubber ring, 35-pressure sensor, 41-first transfer cylinder, 42-first motor, 43-second transfer cylinder, 44-second motor, 45-transfer belt, 51-first control interface, 52-second control interface, 53-third control interface, 54, fourth control interface, 211-proximity sensor.
Detailed Description
The invention is further described below by means of specific embodiments.
Referring to fig. 1 to 2, a textile formaldehyde detection device comprises an operation table 1, a titration assembly 2, a pressing assembly 3, a conveying assembly 4, a control interface 5 and a control system 8.
The titration component 2 is used for dripping test liquid to the textile 7, including the first burette 21 of dripping first test liquid to the textile 7, the second burette 22 of dripping second test liquid to the textile 7, be used for supplying first test liquid's first solvent bottle 25 to first burette 21, be used for supplying second test liquid's second solvent bottle 26 to second burette 22, be used for placing first solvent bottle 25's first platform 27 of placing second solvent bottle 26's second platform 28, the delivery outlet of first solvent bottle 25 is connected with the inlet of first burette 21, the delivery outlet of second solvent bottle 26 is connected with the inlet of second burette 22, concretely, the outlet department of first burette 21 is provided with first solenoid valve 23, the outlet department of second burette 22 is provided with second solenoid valve 24, first solenoid valve 23 and second solenoid valve 24 are connected with control system 8 respectively, the circular telegram and the outage of first solenoid valve 23 and second solenoid valve 24 are controlled by control system 8, through setting up first solenoid valve 23 and second solenoid valve 24 and second solenoid valve 21 and sensor arrangement, can be close to first burette 21 and second burette 21 are located in the side of second burette 21 and sensor system 211 is located near the side of first burette 21 simultaneously, the second burette is located with the second burette 21 is near to the second burette 21.
The operation panel 1 is used for placing titration assembly 2, transfer assembly 4 and pushing down subassembly 3, and its mesa 11 is made by transparent glass, and specific, the below of glass mesa is provided with places chamber 12, is provided with the reflector 6 that is used for observing whether the textile after the dropwise add of first test liquid developed in placing chamber 12, and reflector 6 sets up with first buret 21 relatively.
The pressing component 3 is used for pressing down the textile with the second test liquid dropwise, so as to detect whether the textile with the second test liquid dropwise develops color or not, and comprises a movable rod 31 capable of moving up and down, a detection paper towel 32 wrapped at the front end of the movable rod 31, and a driving device for driving the movable rod 31 to move up and down, wherein the movable rod 31 moving up and down presses down the position of the textile 7 with the second test liquid dropwise, and observes whether the detection paper towel 32 wrapped at the front end of the movable rod 31 is dyed or not to judge whether the textile contains formaldehyde or not, and the driving device is an air cylinder 33 for driving the movable rod 31 to move up and down; the detection paper towel 32 is bound at the front end of the movable rod 31 through the rubber ring 34 after being replaced once every time, and further, the movable rod 31 is provided with a pressure sensor 35, and the pressure sensor 35 is used for collecting pressure information and feeding back to the control system 8.
The conveying component 4 is arranged on the operation table 1 and is used for conveying the textile 7 along the direction from the titration component 2 to the pressing component 3, and comprises a first conveying cylinder 41, a second conveying cylinder 43, a conveying belt 45 and a driving component, wherein the first conveying cylinder 41 and the second conveying cylinder 43 are respectively rotatably arranged at two sides of the operation table 1; the conveyor belt 45 is provided between the first conveyor tube 41 and the second conveyor tube 43, one end of which is wound around the first conveyor tube 41 and the other end of which is provided on the second conveyor tube 43, and is fed out while the second conveyor tube 43 rotates; the driving assembly drives the first conveying cylinder 41 and the second conveying cylinder 43 to rotate synchronously, the driving assembly comprises a first motor 42 for driving the first conveying cylinder 41 to rotate and a second motor 44 for driving the second conveying cylinder 43 to rotate, specifically, the conveying belt 45 is white paper tape, after the textiles dripped with the first test liquid are colored, the white paper tape can be dyed, the white paper tape is displayed through the reflecting mirror 6, the conveying belt 45 is set to be white paper tape, and whether the textiles are dyed or not is conveniently judged.
The control interface 5 is arranged on the operation table 1 and comprises a first control interface 51, a second control interface 52, a third control interface 53 and a fourth control interface 54, wherein the first control interface 51 is used for controlling the time interval between the titration of the first test solution and the second test solution and controlling the emergency stop of the conveying assembly 4, the second control interface 52 is used for controlling the time interval between the conveying of the textiles titrated by the second test solution to the pressing assembly 3, the third control interface 53 is used for controlling the pressing times of the pressing assembly 3 and displaying the pressing pressure value, the fourth control interface 54 is used for controlling the opening and closing of the device, and in particular, the first control interface 51 is provided with a first button for controlling the time interval between the titration of the first test solution and the second test solution, an emergency stop button for controlling the emergency stop of the conveying assembly 4 and a first display screen for displaying the set time value, when the conveyer belt 45 is observed to be dyed through the emergency stop button for controlling the conveying assembly 4, the next piece of textiles to be detected is replaced; the second control interface 52 is provided with a second button for controlling the time interval for which the textiles titrated with the second test liquid are transferred to the pressing assembly 4 and a second display screen for displaying the set time value; the third control interface 53 is provided with a third button for controlling the number of times of pressing down the pressing assembly 3 and a third display screen for displaying the pressed-down pressure value; the fourth control interface 54 is provided with a fourth button for controlling the opening and closing of the apparatus and a fifth button for controlling the start of the conveyance assembly 4.
The control system 8 is respectively connected with the first electromagnetic valve 23, the second electromagnetic valve 24, the air cylinder 33, the first motor 42, the second motor 44, the proximity sensor 211, the first control interface 51, the second control interface 52, the third control interface 53 and the fourth control interface 54, specifically, a signal of the interval titration time between the first burette 21 and the second burette 22 is sent to the control system 8 through a first button, a signal of the interval between the textile after the second test solution is titrated and sent to the lower part of the pressing component 3 is sent to the control system 8 through a second button, a signal of the pressing frequency of the pressing component 3 is sent to the control system 8 through a third button, a signal of the opening of the conveying component 4 is sent to the control system 8 through a fifth button, a signal of stopping the conveying component 4 is sent to the control system 8 through a scram button, and when the control system 8 processes the signal sent by the first button according to an edited program, combining signals fed back in real time by the proximity sensor 211, then respectively controlling the power-on and power-off of the first electromagnetic valve 23 and the second electromagnetic valve 24, then controlling the interval titration of the first buret 21 and the second buret 22, after the second test liquid is titrated, receiving and processing signals sent by a fifth button by the control system 8, combining the processed signals sent by the second button and the processed signals sent by a third button, controlling the first motor 42 and the second motor 44 to work simultaneously to transmit textiles from the lower part of the second buret to the lower part of the pressing assembly, controlling the cylinder 33 to act, driving the movable rod 31 to perform pressing action, and controlling the first motor 42 and the second motor 44 to stop acting by the control system 8 through the emergency stop button when the conveyer belt 45 is observed or the dyeing condition of the paper towel 32 is detected; further, the control system 8 is a PLC system, and when the control system 8 receives a signal of the emergency stop button every time, the actions of each device in the subsequent process of the round of detection must be cleared, and a new round of detection is repeated.
A method for detecting formaldehyde in textile fabrics, comprising the following steps:
(1) Placing the textile 7 on the conveying component 4, conveying the textile to the position below the first burette 21, dripping the first test liquid, waiting for 30 seconds, observing the color change of the conveying belt 45 below the textile 7, judging that the textile contains formaldehyde when the conveying belt 45 is dyed red, stopping detection through a scram button, and continuously dripping the second test liquid when no color is displayed;
(2) The conveying component 4 is started to convey the textile from the lower part of the second burette 22 to the lower part of the pressing component 3, the moving rod 31 is controlled to press downwards for a plurality of times, the color change of the paper towel 32 is observed and detected, when the dyed color is red, the textile is judged to contain formaldehyde, the detection is stopped through the scram button, and if no color is displayed, the textile is judged to contain no formaldehyde, and then the textile is conveyed out of the table top 11 through the conveying component 4.
Specifically, the preparation method of the first test solution comprises the following steps: 41.7g (about 22.7 ml) of sulfuric acid was transferred to a 400ml beaker containing 38.3ml of deionized water, and 1.0g (about 0.91 ml) of phenylhydrazine and 19.0ml of deionized water were added to obtain a first test solution.
The preparation method of the second test solution comprises the following steps: 10.0g of anhydrous ferric chloride was dissolved in 90.0ml of deionized water to obtain a second test solution.
Reaction principle: the first test solution and formaldehyde in the textile can generate a color reaction, when the color is red, the textile is proved to contain formaldehyde, when the color is not developed, the textile may contain formaldehyde or not, because when the formaldehyde threshold value in the textile is not in the detection threshold value of the first test solution, the textile can not generate the color reaction, so that the verification is needed again, the color change of the textile is observed by dripping the second test solution into the textile which is dripped with the first test solution, when the textile is red, the textile is proved to contain formaldehyde, when the color is not changed, the textile is proved to contain formaldehyde, after the detection is finished, the colored textile is further detected, and the specific content of the formaldehyde is determined.
The principle that the first test liquid can detect formaldehyde is as follows: the phenylhydrazine and formaldehyde can generate red compounds under the acidic condition, and the principle that the second test liquid can detect formaldehyde is as follows: phenylhydrazine reacts with high-valence iron ions under acidic conditions to generate red compounds.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, i.e., the invention is not to be limited to the details of the claims and the description, but rather is to cover all modifications which are within the scope of the invention.
Claims (7)
1. A textile formaldehyde detection device which is characterized in that: the device comprises an operation table, a titration assembly, a pressing assembly and a conveying assembly, wherein the titration assembly comprises a first burette for sequentially dripping a first test liquid to textiles and a second burette for dripping a second test liquid to textiles; the pressing component is used for pressing the position of the textile where the second test liquid is dripped; the conveying assembly is arranged on the operating table and is used for conveying the textile along the direction from the titration assembly to the pressing assembly;
the table top of the operating table is made of transparent glass;
the bottom of the operating platform is provided with a reflector for observing whether the textile fabric subjected to the first test liquid dripping is colored or not, and the reflector is arranged opposite to the first burette;
a method for detecting formaldehyde in textiles based on the device, comprising the following steps:
(1) Placing the textile on a conveying component, conveying the textile to the position below a first burette, dripping a first test liquid, waiting for a period of time, observing the color change of the conveying component below the textile, judging that the textile contains formaldehyde when the conveying component is dyed red, stopping detection, and continuously dripping a second test liquid when no color is displayed;
(2) And (3) starting the conveying assembly to convey the textile which is dripped with the second test liquid from the lower part of the second burette to the lower part of the pressing assembly, controlling the pressing assembly to press for a plurality of times, observing the color change of the pressing assembly, judging that the textile contains formaldehyde when the textile is dyed red, terminating detection, and if the textile is not colored, judging that the textile does not contain formaldehyde, and conveying the textile out of the operation table through the conveying assembly.
2. The textile formaldehyde detection device according to claim 1, wherein: the pressing component comprises a movable rod capable of moving up and down, a detection paper towel wrapped at the front end of the movable rod and a driving device for driving the movable rod to move up and down.
3. A textile formaldehyde detection apparatus according to claim 2, characterized in that: the driving device is an air cylinder.
4. A textile formaldehyde detection apparatus according to claim 2, characterized in that: the movable rod is provided with a pressure sensor.
5. A textile formaldehyde detection apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the conveying assembly comprises a first conveying cylinder, a second conveying cylinder, a conveying belt and a driving assembly, and the first conveying cylinder and the second conveying cylinder are respectively and rotatably arranged at two sides of the operating platform; the conveyor belt is arranged between the first conveyor cylinder and the second conveyor cylinder, one end of the conveyor belt is wound on the first conveyor cylinder, the other end of the conveyor belt is arranged on the second conveyor cylinder, and the conveyor belt is sent out under the rotation of the second conveyor cylinder; the driving assembly drives the first transmission cylinder to synchronously rotate with the second transmission cylinder, and comprises a first motor for driving the first transmission cylinder to rotate and a second motor for driving the second transmission cylinder to rotate.
6. A textile formaldehyde detection apparatus according to claim 1 or 2 or 3 or 4, characterized in that: four control interfaces are arranged on the operation table, the first control interface is used for controlling the time interval between titration of the first test liquid and the second test liquid and controlling the scram of the conveying assembly, the second control interface is used for controlling the time interval between conveying the textiles titrated with the second test liquid to the pressing assembly, the third control interface is used for controlling the pressing times of the pressing assembly, and the fourth control interface is used for controlling the opening and closing of the device.
7. A textile formaldehyde detection apparatus according to claim 1 or 2 or 3 or 4, characterized in that: the first burette and the second burette are respectively provided with a first electromagnetic valve and a second electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660131.0A CN108459018B (en) | 2018-06-25 | 2018-06-25 | Textile formaldehyde detection device and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810660131.0A CN108459018B (en) | 2018-06-25 | 2018-06-25 | Textile formaldehyde detection device and detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108459018A CN108459018A (en) | 2018-08-28 |
| CN108459018B true CN108459018B (en) | 2023-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810660131.0A Active CN108459018B (en) | 2018-06-25 | 2018-06-25 | Textile formaldehyde detection device and detection method |
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