CN116893170B - Method and device for rapidly detecting cation degree in polyacrylamide - Google Patents
Method and device for rapidly detecting cation degree in polyacrylamide Download PDFInfo
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- CN116893170B CN116893170B CN202311159479.9A CN202311159479A CN116893170B CN 116893170 B CN116893170 B CN 116893170B CN 202311159479 A CN202311159479 A CN 202311159479A CN 116893170 B CN116893170 B CN 116893170B
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- water absorption
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- 229920002401 polyacrylamide Polymers 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 19
- 150000001768 cations Chemical class 0.000 title abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 90
- 238000001514 detection method Methods 0.000 claims abstract description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 125000002091 cationic group Chemical group 0.000 claims abstract description 43
- 239000000523 sample Substances 0.000 claims abstract description 24
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 239000012488 sample solution Substances 0.000 claims abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 5
- 239000000243 solution Substances 0.000 claims description 41
- 238000002156 mixing Methods 0.000 claims description 38
- 239000007788 liquid Substances 0.000 claims description 35
- 238000010521 absorption reaction Methods 0.000 claims description 30
- 238000003825 pressing Methods 0.000 claims description 24
- 239000002775 capsule Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000001125 extrusion Methods 0.000 claims description 13
- 229910052700 potassium Inorganic materials 0.000 claims description 7
- 239000011591 potassium Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- AFBPFSWMIHJQDM-UHFFFAOYSA-N N-methylaniline Chemical compound CNC1=CC=CC=C1 AFBPFSWMIHJQDM-UHFFFAOYSA-N 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 208000002197 Ehlers-Danlos syndrome Diseases 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 claims description 2
- GBSRRQISIWGCNC-UHFFFAOYSA-N methyl propane-1-sulfonate Chemical compound CCCS(=O)(=O)OC GBSRRQISIWGCNC-UHFFFAOYSA-N 0.000 claims description 2
- 238000012031 short term test Methods 0.000 claims 1
- 239000008394 flocculating agent Substances 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 13
- 239000011148 porous material Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000010802 sludge Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000004448 titration Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical group NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000012113 quantitative test Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention discloses a method and a device for rapidly detecting the cationic degree in polyacrylamide, and relates to the technical field of water treatment flocculating agents. Including the sampler of taking up and dissolving polyacrylamide, still include the detector and detect the sample solution that comes from the sampler, the detector includes the bottom plate, and detection test paper has been placed at the bottom plate top, and detection test paper divide into the main section of absorbing water more and the meticulous section of absorbing water less of absorbing water. According to the invention, the fixed mass of the sampler is used for sampling and the fixed volume of the solvent is used for indicating the solvent, the detection test paper capable of reacting with the sample solution is arranged in the detector, the sample is only required to be quantitatively extracted during detection, then the sample is dissolved by the sampler and then quantitatively injected into the detector, and whether the cation degree in the sample is in a preset range or not can be rapidly detected by using the detector, so that the rapid cation detection of the cation polyacrylamide is realized, the detection efficiency is increased, and the detection time for goods to go out and put in storage is shortened.
Description
Technical Field
The invention relates to the technical field of water treatment flocculating agents, in particular to a method and a device for rapidly detecting the cation degree in polyacrylamide.
Background
The polyacrylamide is classified according to the difference of ionic characteristics, and can be classified into four types of anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide and amphoteric polyacrylamide, wherein the cationic polyacrylamide is commonly used for purifying organic sludge or strong alkaline sludge, and the cationic degree of the finished cationic polyacrylamide is an important judgment standard for judging the dirt removing capacity of the finished cationic polyacrylamide.
The quality detection method of the cationic polyacrylamide sludge treatment agent with the patent application number of 201410086355.7 is characterized in that the specific cationic degree of polyacrylamide is measured by a titration method, the quality of the cationic polyacrylamide sludge treatment agent is detected, the quality of the sludge treatment agent can be accurately judged, products with poor quality are removed, and qualified products are reserved for debugging and use by an upper machine, so that the sewage treatment effect is ensured, the sewage treatment efficiency is improved, the running cost is saved, and the risks of sewage treatment production and application and equipment safety are reduced.
However, the detection methods in the above patent and the detection method for polyacrylamide in national standards both adopt a titration method to determine the cationic degree, and although the overall operation is simpler than other detection methods, more time is required to prepare a solution and calculate the result, the time cost is more, and the real rapid detection is not performed, so that the overall detection efficiency is not good.
Disclosure of Invention
The invention aims to provide a method and a device for rapidly detecting the cationic degree in polyacrylamide, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a method and device of cationic degree in quick detection polyacrylamide, includes the sampler that holds dissolving polyacrylamide, still includes the sample solution that the detector detected from the sampler, the detector includes the bottom plate, the detection test paper has been placed at the bottom plate top, the detection test paper divide into the main section of absorbing water more and the less meticulous section of absorbing water, bottom plate top fixedly connected with will mainly absorb water section and meticulous section divided sealing piece of absorbing water, the bottom plate top is located the position fixedly connected with curb plate of meticulous section both sides, the curb plate top is provided with the spout, one of them curb plate side is provided with the movable chamber, movable chamber internally mounted has the stopper, the position that the movable chamber is close to the detection test paper has seted up the sliding port, stopper one end is erected on two spouts after running through the sliding port, the stopper middle part is passed to the detection test paper, the stopper can cut the liquid that will absorb water the section infiltration of independently, bottom plate top fixedly connected with watchcase, bottom plate and sealing piece form the inlet chamber in the position fixedly connected with top the top of inlet chamber and the top of adaptor adaptation, the position fixedly connected with the top is located the top of inlet chamber top and is located the top of the inlet chamber and is used for observing window, the top is located the top of the flexible strip is connected with the top of the stopper, the top is located the top of the stopper is used for the top of the movable plug.
Still further, the stopper includes two sliders of setting up on the spout, and parallel arrangement has two rotatable extrusion posts from top to bottom between the slider, and intermeshing's external tooth has all been seted up to two extrusion post outer walls, the meticulous section of absorbing water of test paper is extruded between two extrusion posts, is located the top extrusion post one end is passed the sliding port after fixedly connected with and is pushed away the wheel, activity room bottom fixedly connected with pinion rack, push away the wheel outer wall seted up with the cooperation tooth of pinion rack meshing.
Furthermore, the detection test paper comprises a center test paper, the upper surface and the lower surface of one end of the center test paper are fixedly connected with auxiliary test paper, one section of the center test paper, which is fixedly provided with the auxiliary test paper, is a main water absorption section, the other sections of the center test paper are fine water absorption sections, and 2-polyacrylamide-2-potassium methylpropanesulfonate is attached in the center test paper and the auxiliary test paper.
Furthermore, one end of the central test paper, which is used for fixing the auxiliary test paper, is of a Y-shaped structure, the auxiliary test paper is of a Y-shaped structure, the rest part of the central test paper is of a strip shape, and the surface of the central test paper is coated with a sealing plastic sleeve.
Still further, the sampler includes the hybrid tube, and the one end threaded connection of hybrid tube has the spiral cover, and the spiral cover middle part runs through and is provided with the push rod, and the push rod is located the first piston piece of one end fixedly connected with in the hybrid tube, and first piston piece other end fixedly connected with breaks the needle, the inside prefabricated capsule of having placed of hybrid tube, the one end fixedly connected with ration pipe that the spiral cover was kept away from to the hybrid tube, the inside position fixedly connected with filter screen that is located between prefabricated capsule and the ration pipe of hybrid tube, and the ration pipe is linked together with the hybrid tube, and the ration pipe top runs through and is provided with the depression bar, and the depression bar is located the inside one end fixedly connected with second piston of ration pipe, and ration pipe bottom fixedly connected with has the drain pipe with the first adaptation of annotating liquid, drain pipe end plug.
Furthermore, a gap is reserved between the initial state of the second piston in the quantitative pipe and the inner wall of the bottom of the quantitative pipe, the mixing pipe is connected to the outer wall of the quantitative pipe and is communicated with the gap between the second piston and the bottom of the quantitative pipe through pores, and a limiting cover is fixedly connected to the periphery of the liquid outlet pipe at the bottom of the quantitative pipe.
Still further, the preformed capsule comprises an elastic skin, the interior of which is quantitatively filled with an indicating solvent, the indicating solvent comprising water and an indicator.
A method for rapidly detecting the cation degree in polyacrylamide, which uses a device for rapidly detecting the cation degree in polyacrylamide, the detection method comprises the following steps:
step one: quantitatively sampling, namely taking a polyacrylamide powder sample to be detected into a mixing tube, and sealing and screwing a cover;
step two: uniformly mixing, pressing down a push rod to enable a broken needle on a first piston block to pierce a prefabricated capsule, mixing an indication solvent with a sample, and shaking to uniformly obtain a solution;
step three: quantitatively taking out, vertically placing the mixing tube, pressing down the push rod, enabling the mixed solution to reach the inside of the quantitative tube through the fine holes, and jacking up the second piston and the push rod;
step four: fixing a detection position, and adjusting the flow stopper to a position to be detected according to the scale indication;
step five: and (3) injection detection, namely taking down the plug, quickly pressing the pressing rod to inject the solution into the detector after the liquid outlet pipe is matched with the liquid injection head, and immediately taking off the sampler and standing the detector for 2-3 minutes to observe the color change.
Still further, the standing of the mixing tube vertically in the third step requires 2-3 minutes, and the push rod is pressed down after the bubbles are completely lifted.
Furthermore, in the fifth step, the pushing rod needs to be pushed lightly when the pressing rod is pressed, and the detector needs to be placed horizontally after the solution is injected.
Compared with the prior art, the invention has the beneficial effects that:
the method and the device for rapidly detecting the cationic degree in the polyacrylamide are characterized in that the fixed mass of a sampler is used for sampling and the fixed volume of the solvent for indicating the solvent is used, the detection test paper capable of reacting with the sample solution is arranged in the detector, the sample is only required to be quantitatively extracted during detection, then the sample is dissolved by the sampler and then quantitatively injected into the detector, whether the cationic degree in the sample is in a preset range or not can be rapidly detected by the detector, and the rapid cationic detection of the cationic polyacrylamide is realized, so that the detection efficiency is accelerated, and the detection time for delivering and warehousing cargoes is reduced.
Meanwhile, the flow stop device can be used for controlling the quantity of the reaction with the solution on the detection test paper, so that the cationic degree range of the cationic polyacrylamide sample can be accurately detected by continuously adjusting the flow stop device, the application range of the equipment is improved, and the practicability of the equipment is improved;
moreover, in order to ensure the accuracy of detection data of the whole detector, besides the quality control of samples which is considered to be influenced by errors, the solvent and the indicator are wrapped in a prefabricated capsule form so that the solvent and the indicator are not easy to evaporate, long-term maintenance is facilitated, a certain volume of solution can be independently extracted from the inside of the mixing tube for quantitative injection through the design of the quantitative cylinder, and then the quantitative injection is matched with the inspection test paper with even material adhesion, so that the rationality and the accuracy of the indication scale on the watchcase are ensured.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the internal structure of the sampler according to the present invention;
FIG. 3 is a schematic view of the structure of the preformed capsule of the present invention;
FIG. 4 is a schematic diagram of a detector structure according to the present invention;
FIG. 5 is a schematic view of a detector according to the present invention;
FIG. 6 is a schematic view of a stopper structure according to the present invention;
FIG. 7 is a schematic diagram of the test strip according to the present invention.
In the figure: 1. a sampler; 101. a mixing tube; 102. screwing the cover; 103. a push rod; 104. a first piston block; 105. breaking the needle; 106. prefabricating capsules; 107. a filter screen; 108. fine pores; 109. a metering tube; 110. a second piston; 111. a compression bar; 112. a liquid outlet pipe; 113. a plug head; 114. a limiting cover; 115. an elastic skin; 116. indicating a solvent; 2. a detector; 201. a watch case; 202. a bottom plate; 203. a sealing sheet; 204. detecting test paper; 205. a side plate; 206. a movable chamber; 207. a toothed plate; 208. a flow stopper; 209. a scale; 210. a liquid injection head; 211. an observation window; 212. a movable window; 213. an elastic strip; 214. a plug; 215. a slide block; 216. an extrusion column; 217. external teeth; 218. push wheel; 219. center test paper; 220. auxiliary test paper; 221. and (5) sealing the plastic sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The cationic polyacrylamide is a flocculating agent widely used by water treatment plants, and is a main product of most flocculating agent factories, the cationic polyacrylamide is placed or stored improperly for a long time, a certain degree of deterioration is caused, so that the internal cationic degree is influenced, the decontamination capability of the low cationic degree polyacrylamide can be greatly influenced, the water treatment plants need to check the cationic degree of the low cationic degree polyacrylamide when buying and using, the standard is ensured, the low cationic degree polyacrylamide is then put into a warehouse for use after being qualified, but the traditional titration method needs more time for checking the cationic degree, in general, when the self-test checking needs less time, the detection by a detection mechanism needs more working days, the cationic polyacrylamide is used as a common consumable, the self-value is lower, the detection by a three-way mechanism is generally not carried out, and most water treatment plants do not have special detection equipment, so that the standard can only be met according to the detection data of factories and the production lot number of the conventional method, in general use time is basically artificial judgment, the long time is longer, the standard of the quality of the high cationic polyacrylamide can be met when the standard is stored in the market, the conventional method is more convenient for detecting the quality of the high cationic quality of the polyacrylamide, the product can be stored in the market, the standard is more stringent condition that the standard of the standard is met when the standard is needed for detecting the high quality of the polyacrylamide is stored in the product, and can roughly estimate its cationic degree range.
It should be noted that, the base material of the test paper 204 used this time is a cotton fiber strip, which has good water-guiding capability, the adopted indicator is methylaniline blue, the mixture is blue after being mixed with the solution, the blue solution can spread on the test paper 204 in the detection process, after the blue solution spreads to a certain distance, the 2-polyacrylamide-2-methylpropanesulfonic acid potassium salt on the test paper 204 can react with the solution, and then the blue solution is changed into purple, in the general detection process, the stopper 208 is firstly adjusted to the position of the qualified scale 209 for detection, if the solution still presents blue on the qualified scale 209, the sample is proved to be qualified, if the specific cation range of the sample is required to be known, the stopper 208 can be adjusted to the next scale 209 for 2-3 minutes, whether the solution changes color is observed, if the solution changes color, the cation in the sample is proved to be between the values displayed by the two scales 209, and if the position of the stopper 208 can be readjusted until the solution changes color.
As shown in fig. 1 to 7, the present invention provides a technical solution: the method and device for rapidly detecting the cationic degree in the polyacrylamide, precisely a combined detection test paper 204 suit, comprises a sampler 1 for holding and dissolving the polyacrylamide, and also comprises a detector 2 for detecting sample solution from the sampler 1, wherein the detector 2 comprises a bottom plate 202, the top of the bottom plate 202 is provided with a detection test paper 204, the detection test paper 204 is divided into a main water absorption section with more water absorption and a fine water absorption section with less water absorption, the top of the bottom plate 202 is fixedly connected with a sealing sheet 203 for separating the main water absorption section and the fine water absorption section, the top of the bottom plate 202 is fixedly connected with side plates 205 at the two sides of the fine water absorption section, the top of the side plates 205 is provided with a chute, one side plate 205 is provided with a movable chamber 206, a flow stop 208 is arranged in the movable chamber 206, a sliding port is arranged at the position of the movable chamber 206 close to the detection test paper 204, one end of the flow stopper 208 is erected on two sliding grooves after penetrating through the sliding port, the detection test paper 204 penetrates through the middle of the flow stopper 208, the flow stopper 208 can cut off liquid penetrating from the main water suction section, the top of the bottom plate 202 is fixedly connected with the watchcase 201, the bottom plate 202 and the sealing piece 203 form a liquid inlet chamber at the position where the main water suction section is located, the top of the watchcase 201 is fixedly connected with a liquid injection head 210 matched with the sampler 1 above the liquid inlet chamber, an observation window 211 for observing the fine water suction section of the detection test paper 204 and a movable window 212 for moving the flow stopper 208 are arranged at the top of the watchcase 201, a plurality of scales 209 are marked beside the observation window 211 on the upper surface of the watchcase 201, the top of the bottom plate 202 is fixedly connected with an elastic strip 213, the top of the elastic strip 213 is fixedly connected with a plug 214, and the plug 214 is abutted to the hole of the liquid injection head 210.
It should be noted that the whole detector 2 is divided into three areas, including a liquid inlet chamber for storing a solution, a movable chamber 206 for controlling the movement of the flow stop 208 and a limiting area formed between two sides for limiting the detection test paper 204, the functions of each area are independent, the scale 209 values are obtained according to quantitative tests, when in use, the sample to be taken is fixed, the solvent and the indicator in the subsequent prefabricated capsule 106 are quantitative, the solution injected into the detector 2 is quantitative, the amount of reactants contained in a fixed distance on the detection test paper 204 is quantitative, so that the number of marked values of different scale 209 positions can be determined, when in use, the flow stop 208 can be adjusted to a target position before detection, and the cation degree range of the detection sample can be determined from a lower position through continuous adjustment position change.
As shown in fig. 6, the flow stop device 208 includes two sliding blocks 215 erected on the sliding groove, two rotatable extrusion columns 216 are arranged between the sliding blocks 215 in an up-down parallel manner, external teeth 217 meshed with each other are formed on the outer walls of the two extrusion columns 216, the fine water absorption section of the test paper 204 is extruded between the two extrusion columns 216, one end of the extrusion column 216 positioned at the top penetrates through the sliding opening and is fixedly connected with a push wheel 218, the bottom of the movable chamber 206 is fixedly connected with a toothed plate 207, and matching teeth meshed with the toothed plate 207 are formed on the outer walls of the push wheel 218.
It should be noted that, the flow stop device 208 is used as a core function piece of the device, it mainly relies on two pressing columns 216 that are closely attached to press the passing test paper 204, and further penetration of liquid is blocked, and then the reactant on the test paper 204 is controlled to react with the solution, the sliding block 215 in the flow stop device 208 can make the two pressing columns 216 move linearly on the sliding groove, a larger hole is provided in the middle of the sliding block 215, the external teeth 217 on the two pressing columns 216 are meshed with each other, two independent holes are also provided at the edge of the sliding block 215 to limit the pressing columns 216 and rotate, one end of the pressing column 216 at the top is connected with a push wheel 218, during use, the push wheel 218 is pushed by hand, the position of the whole flow stop device 208 can be adjusted, during pushing, the push wheel 218 is meshed with the toothed plate 207, the push wheel 218 moves stably and can fix the position, the push wheel 218 rotates, and drives the pressing columns 216 to rotate, thereby making the pressing columns 216 change the pressing position of the test paper 204 conveniently, and at the same time, the risk of tearing the test paper 204 can be avoided to a certain extent if the position of the test paper 204 is not changed by force.
As shown in fig. 7, the test strip 204 includes a central test strip 219, an auxiliary test strip 220 is fixedly connected to the upper and lower surfaces of one end of the central test strip 219, one section of the central test strip 219, where the auxiliary test strip 220 is fixed, is a main water absorption section, the other sections of the central test strip 219 are fine water absorption sections, 2-polyacrylamide-2-methylpropanesulfonic acid potassium is attached to the inside of the central test strip 219 and the auxiliary test strip 220, one end of the central test strip 219, where the auxiliary test strip 220 is fixed, is of a Y-shaped structure, the auxiliary test strip 220 is also of a Y-shaped structure, the other sections of the central test strip 219 are of a strip shape, and the surface of the central test strip 219 is coated with a sealing plastic sleeve 221.
It should be noted that, the test strip 204 is a specially treated cotton fiber strip, and is attached with 2-polyacrylamide-2-methylpropanesulfonic acid potassium salt on the surface or in the interior thereof by means of thermal sublimation or spray attachment, so that the material is ensured to be uniformly attached on the surface of the substrate in the manufacturing process, as the solution injected into the detector 2 is more, in order to control the size of the whole detector 2, most of the solution is concentrated in the liquid inlet chamber and reacts with the reactant on the test strip 204, therefore, an auxiliary test strip 220 is arranged at one end of the center test strip 219 to assist the reaction, and then the end point of the reaction is located at a fine detection section, one end of the center test strip 219, which fixes the auxiliary test strip 220, is in a Y-shaped structure for mounting the elastic strip 213 and the plug 214, the rest of the center test strip 219 is in a strip shape, and the surface is coated with the sealing plastic sleeve 221 to prevent excessive evaporation of the solvent in the use process, and also protect the test strip 204.
As shown in fig. 2, the sampler 1 includes a mixing tube 101, one end of the mixing tube 101 is screwed with a screw cap 102, a push rod 103 is arranged in the middle of the screw cap 102 in a penetrating manner, one end of the push rod 103 located in the mixing tube 101 is fixedly connected with a first piston block 104, the other end of the first piston block 104 is fixedly connected with a breaking needle 105, a prefabricated capsule 106 is placed inside the mixing tube 101, one end of the mixing tube 101 far away from the screw cap 102 is fixedly connected with a quantifying tube 109, the inside of the mixing tube 101 is located between the prefabricated capsule 106 and the quantifying tube 109 and is fixedly connected with a filter screen 107, the quantifying tube 109 is communicated with the mixing tube 101, a pressing rod 111 penetrates through the top of the quantifying tube 109 and is arranged at the top of the quantifying tube, one end of the pressing rod 111 located inside the quantifying tube 109 is fixedly connected with a second piston 110, the bottom end of the quantifying tube 109 is fixedly connected with a liquid outlet pipe 112 matched with a liquid injection head 210, a plug 113 is plugged at the end of the liquid outlet pipe 112, an initial state of the second piston 110 inside the quantifying tube 109 and the bottom of the quantifying tube 109 leave a gap with the inner wall of the quantifying tube 109, the mixing tube 101 is connected with the outer wall of the quantifying tube 109 and is communicated with the second piston 110 and the gap between the second piston 110 and the quantifying tube 109 through the pore 108 and the gap 112, the bottom of the quantifying tube 109, the elastic membrane is fixedly connected with the elastic membrane 116, the elastic membrane is located at the bottom of the piston 112 and the quantifying tube 116, the elastic membrane is filled with the elastic membrane, the elastic membrane 116, the elastic membrane is filled with the elastic membrane, the elastic membrane is 116, and the elastic membrane is filled, the elastic membrane is 116, the elastic membrane is filled, and the elastic membrane is a piston is filled, and the piston is a piston is 210 is.
It should be noted that, as a main body for quantitative dissolution and injection, the sampler 1 needs to be operated more finely when in use, when in filling materials, the screw cap 102 needs to be unscrewed firstly, a sample is introduced into the mixing tube 101, then the screw cap 102 is rotated and fixed, the plug 113 is pulled out, the push rod 103 is pushed to enable the breaking needle 105 to reach a position relatively close to the prefabricated capsule 106, then the plug 113 is plugged, the aim is to discharge the extra air in the interior, after the breaking needle 105 is pushed to puncture the prefabricated capsule 106, the water solvent with the indicator in the interior dissolves the sample, at this time, the sampler 1 needs to be shaken for accelerating dissolution, after the dissolution is completed, after no solid particles are in the solution, the mixing tube 101 is placed vertically downwards for a period of time, the bubbles in the mixing tube 101 are eliminated, then the bottom solution is extruded into the quantifying tube 109 by pushing down the push rod 103, and the second piston 110 in the metering tube 109 is stopped after being jacked to the highest, the pore 108 connecting the metering tube 109 and the mixing tube 101 has smaller pore diameter and needs larger pressure to transfer liquid, the metering tube 109 can hold the fixed amount of the solution, and then the fixed amount of the solution which is added into the detector 2 is ensured, and some gas remains in the metering tube 109 at the beginning, the purpose is to drain the solution in the subsequent injection process so as to reduce detection error, and then the solution needs to be firstly opened in the process of injecting the solution into the detector 2, then the liquid outlet pipe 112 is aligned with the liquid injection head 210, the limiting cover 114 covers the outer wall of the liquid injection head 210, the tight connection of the liquid outlet pipe 112 and the plug 214 is ensured, then the pressing rod 111 is quickly pressed, the solution enters the detector 2, and almost no solution flows back from the pore 108 because the pore diameter of the liquid outlet pipe 112 is far larger than the pore diameter of the pore 108, if the influence of backflow is afraid, the micro-press rod 103 can be selected to press the press rod 111 again.
In the detection of the cationicity of the cationic polyacrylamide, the device is used, and the detection overall method comprises the following steps:
step one: taking 0.5-1mg of polyacrylamide powder sample to be detected into the mixing tube 101 according to the detection specification of the detector 2, wherein the detection precision of the required weighing equipment needs to reach 0.01mg, and then sealing the rotary cover 102;
step two: uniformly mixing, pressing down the push rod 103 to enable the broken needle 105 on the first piston block 104 to puncture the prefabricated capsule 106, mixing the indication solvent 116 with the sample, wherein the prefabricated capsule 106 contains 5-10ml of water, 0.5-1ml of hydrochloric acid solution and 0.2-0.4ml of methylaniline blue indicator, the Ph value of the indication solvent 116 is in the range of 3-5, and shaking to uniformly dissolve the indication solvent 116 to obtain a solution;
step three: quantitatively taking out, vertically placing the mixing tube 101, pressing down the push rod 103, and taking out 3ml of mixed solution by pushing up the second piston 110 and the pressure rod 111 upwards through the fine holes 108 to the inside of the metering tube 109 because the periphery of the prefabricated capsule 106 is wrapped by the elastic epidermis 115 and the residual epidermis is left after puncturing and is covered by the filter screen 107 to prevent the fine holes 108 from being blocked;
step four: the detection position is fixed, the flow stopper 208 is adjusted to a position to be detected according to the indication of the scale 209, and the confirmation of the scale 209 needs to be calculated more accurately;
basic formula one:
n-moles of cation units in moles (mol);
m-mass number of sample in grams (g);
ω 1 -mass fraction of the sample;
M 1 the molar mass number of the cationic monomer is expressed in grams per mole (g/mol)M 1 =193.67)；
M 2 The molar mass of the acrylamide monomer is given in grams per mole (g/mol)M 2 =71.08)；
v 1 Metering tube 109 extracts the volume of solution injected, in milliliters (ml); wherein, the mass fraction of the sample needs to be calculated firstly, and the measuring method comprises the following steps: about 1 g sample was weighed to the nearest 0.1mg using a weighing flask previously dry constant at 120 ℃ + -2 ℃ and placed in a dry box and recorded as m 0 Drying at 120deg.C+ -2deg.C for 2h, taking out, cooling to room temperature in a dryer, weighing to constant amount, and recording as m 1 Then。
The number of moles of cation units needs to be determined by means of:
and a basic formula II:
n-mole number of 2-polyacrylamide-2-methylpropanesulfonic acid potassium contained in the main water absorption section, the unit is mole (mol)
l-the moving length of the liquid column of the fine water absorption section, the unit is centimeter (cm)
C-mole number of potassium 2-polyacrylamide-2-methylpropanesulfonate contained in the fine water absorbing section per unit length, the unit is mole per centimeter (mole/cm)
By combining the basic formula I and the basic formula II, the relation between the cation degree and the moving length of the liquid column of the fine water absorption section can be determined, and then the scale 209 can be determined, and due to different production processes and conditions, the mole number N of the 2-polyacrylamide-2-methylpropanesulfonic acid potassium contained in the main water absorption section on the test paper 204 and the mole number N of the 2-polyacrylamide-2-methylpropanesulfonic acid potassium contained in the unit length of the fine water absorption section are generally detected to be provided when specific production is needed, and v 1 And v 0 Re-confirmation is also performed depending on the final production and accuracy, generally, the final use is to ensure that the sampling quality is between 0.5-1mg, and that the pre-capsule 106 contains 5-10ml of water, 0.5-1ml of hydrochloric acid solution and 0.2-0.4ml of methylaniline blue indicator, which values need to be normalized to specific values after production has been completedThereby carrying out laser engraving seal cutting of the scale 209 on the watch case 201 according to specific numerical values.
Step five: injection detection, removing the plug 113, quickly pressing the pressing rod 111 to inject the solution into the detector 2 after the liquid outlet pipe 112 is matched with the liquid injection head 210, and immediately taking off the sampler 1 to stand the detector for 2-3 minutes to observe color change;
in the third step, the mixing tube 101 needs to be placed vertically for 2-3 minutes, the push rod 103 is pressed down after the bubbles are completely lifted, the push rod 103 needs to be pushed slightly when the push rod 111 is pressed in the fifth step, and the detector 2 needs to be placed horizontally after the solution is injected.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention as defined by the appended embodiments and equivalents thereof.
Claims (9)
1. Device of cationic degree in short-term test polyacrylamide, including holding sampler (1) of dissolving polyacrylamide, its characterized in that: the detector (2) is used for detecting sample solution from the sampler (1), the detector (2) comprises a bottom plate (202), detection test paper (204) is placed at the top of the bottom plate (202), the detection test paper (204) is divided into a main water absorption section with more water absorption and a fine water absorption section with less water absorption, a sealing sheet (203) for separating the main water absorption section from the fine water absorption section is fixedly connected to the top of the bottom plate (202), side plates (205) are fixedly connected to the positions of the two sides of the fine water absorption section, sliding grooves are formed at the tops of the side plates (205), a movable chamber (206) is arranged beside one side plate (205), a sliding port is formed in the position of the movable chamber (206) close to the detection test paper (204), one end of the sliding port is provided with a sliding port, the sliding port is erected on the two sliding grooves, the detection test paper (204) passes through the middle part of the sliding port, the sliding port (208) can intercept liquid penetrating from the main water absorption section, the top of the bottom plate (202) is fixedly connected with a watchcase (201), the bottom plate (201) and the sealing sheet (201) are connected to the top of the main water absorption section to form a water inlet section, the water inlet section is fixedly connected to the top of the watchcase (201), an observation window (211) for observing a fine water absorption section of the detection test paper (204) and a movable window (212) for moving the flow stopper (208) are formed in the top of the watchcase (201), a plurality of scales (209) are marked beside the observation window (211) on the upper surface of the watchcase (201), an elastic strip (213) is fixedly connected to the top of the bottom plate (202) at the position of the liquid inlet chamber, a plug (214) is fixedly connected to the top end of the elastic strip (213), and the plug (214) is abutted to a hole of the liquid injection head (210);
the flow stop device (208) comprises two sliding blocks (215) erected on a sliding groove, two rotatable extrusion columns (216) are arranged between the sliding blocks (215) in an up-down parallel arrangement, external teeth (217) meshed with each other are formed in the outer walls of the two extrusion columns (216), the fine water absorption section of the detection test paper (204) is extruded between the two extrusion columns (216), one end of each extrusion column (216) located at the top is fixedly connected with a push wheel (218) after penetrating through a sliding opening, a toothed plate (207) is fixedly connected to the bottom of the movable chamber (206), and matched teeth meshed with the toothed plate (207) are formed in the outer walls of the push wheels (218).
2. The device for rapidly detecting the cationic degree in polyacrylamide according to claim 1, wherein: the detection test paper (204) comprises a center test paper (219), wherein an auxiliary test paper (220) is fixedly connected to the upper surface and the lower surface of one end of the center test paper (219), one section of the center test paper (219), which is fixedly provided with the auxiliary test paper (220), is a main water absorption section, the other sections of the center test paper (219) are fine water absorption sections, and 2-polyacrylamide-2-potassium methylpropanesulfonate is attached in the center test paper (219) and the auxiliary test paper (220).
3. The device for rapidly detecting the cationic degree in polyacrylamide according to claim 2, wherein: one end of the center test paper (219) is fixed with the auxiliary test paper (220) and is of a Y-shaped structure, the auxiliary test paper (220) is also of a Y-shaped structure, the rest part of the center test paper (219) is of a strip shape, and the surface of the center test paper is coated with a sealing plastic sleeve (221).
4. The device for rapidly detecting the cationic degree in polyacrylamide according to claim 1, wherein: sampler (1) is including mixing tube (101), and the one end threaded connection of mixing tube (101) has spiral cover (102), and spiral cover (102) middle part runs through and is provided with push rod (103), and push rod (103) are located the first piston block (104) of one end fixedly connected with of mixing tube (101), and broken needle (105) of first piston block (104) other end fixedly connected with, prefabricated capsule (106) have been placed inside mixing tube (101), and the one end fixedly connected with ration pipe (109) of spiral cover (102) are kept away from to mixing tube (101), and the inside position fixedly connected with filter screen (107) that is located between prefabricated capsule (106) and ration pipe (109) of mixing tube (101), and ration pipe (109) are linked together with mixing tube (101), and the top of ration pipe (109) runs through and is provided with depression bar (111), and depression bar (111) are located the inside one end fixedly connected with second piston (110) of ration pipe (109), and drain pipe (112) bottom fixedly connected with and annotate drain pipe (112) of liquid head (210) adaptation, drain pipe (112) end plug connect (113).
5. The device for rapidly detecting the cationic degree in polyacrylamide according to claim 4, wherein: the initial state of a second piston (110) in the quantitative pipe (109) is kept with the gap with the inner wall of the bottom of the quantitative pipe (109), the mixing pipe (101) is connected to the outer wall of the quantitative pipe (109) and is communicated with the gap between the second piston (110) and the bottom of the quantitative pipe (109) through a fine hole (108), and a limiting cover (114) is fixedly connected to the periphery of the bottom of the quantitative pipe (109) located at the liquid outlet pipe (112).
6. The device for rapidly detecting the cationic degree in polyacrylamide according to claim 4, wherein: the preformed capsule (106) comprises an elastic skin (115), the interior of the elastic skin (115) is quantitatively filled with an indicating solvent (116), the indicating solvent (116) comprises water and an indicator, and the indicator comprises methylaniline blue.
7. A method for rapidly detecting the cationic degree in polyacrylamide, which uses the device for rapidly detecting the cationic degree in polyacrylamide according to claim 6, and is characterized in that: the detection method comprises the following steps:
step one: quantitatively sampling, namely taking 0.5-1mg of polyacrylamide powder sample to be detected into a mixing tube (101), and sealing a rotary cover (102);
step two: uniformly mixing, pressing down a push rod (103) to enable a broken needle (105) on a first piston block (104) to puncture a prefabricated capsule (106), mixing an indication solvent (116) with a sample, wherein the prefabricated capsule (106) contains 5-10ml of water, 0.5-1ml of hydrochloric acid solution and 0.2-0.4ml of methylaniline blue indicator, the Ph value of the indication solvent (116) is in the range of 3-5, and shaking to uniformly obtain a solution;
step three: quantitatively taking out, vertically placing the mixing tube (101), pressing down the push rod (103), enabling the mixed solution to reach the inside of the quantitative tube (109) through the fine holes (108), and lifting up the second piston (110) and the press rod (111) upwards to quantitatively extract 3ml;
step four: fixing the detection position, and adjusting the flow stop device (208) to a position to be detected according to the indication of the scale (209);
step five: injection detection, removing the plug (113), after the liquid outlet pipe (112) is matched with the liquid injection head (210), rapidly pressing the pressure rod (111) to inject the solution into the detector (2), and immediately taking off the sampler (1) and standing the detector (2) for 2-3 minutes to observe color change.
8. The method for rapidly detecting the cationic degree in the polyacrylamide according to claim 7, wherein: in the third step, the mixing tube (101) is vertically placed for 2-3 minutes to stand, and the push rod (103) is pressed down after the bubbles are completely lifted.
9. The method for rapidly detecting the cationic degree in the polyacrylamide according to claim 7, wherein: in the fifth step, when the pressing rod (111) is pressed, the pushing rod (103) needs to be pushed lightly, and after the solution is injected, the detector (2) needs to be placed horizontally.
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