CN113970615B - Device and method for detecting effective content of heavy metal chelating agent - Google Patents
Device and method for detecting effective content of heavy metal chelating agent Download PDFInfo
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- CN113970615B CN113970615B CN202111323571.5A CN202111323571A CN113970615B CN 113970615 B CN113970615 B CN 113970615B CN 202111323571 A CN202111323571 A CN 202111323571A CN 113970615 B CN113970615 B CN 113970615B
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- 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
Abstract
The invention discloses a device and a method for detecting the effective content of a heavy metal chelating agent, and the device comprises a chelating agent barrel transmission mechanism, wherein a conveyor belt is arranged on one side of the chelating agent barrel transmission mechanism, a plurality of transparent containers are uniformly arranged on the conveyor belt, a quantitative water outlet mechanism, a chelating agent sampling mechanism and a quantitative phenolphthalein outlet mechanism are sequentially and uniformly arranged along the direction of the conveyor belt, a plurality of quantitative hydrochloric acid outlet mechanisms, a quantitative starch outlet indicator mechanism and a plurality of quantitative iodine standard solution outlet mechanisms are arranged on one side of the conveyor belt, a marking device is also arranged on one side of the conveyor belt, color sensors are respectively arranged on the quantitative hydrochloric acid outlet mechanisms and the quantitative iodine standard solution outlet mechanisms, and a control device calculates and records the effective content of the chelating agent in a chelating agent barrel correspondingly marked according to the total using amount of the iodine standard solution. Can carry out quick automatic detection and mark the chelator bucket that is detected to heavy metal chelator, can be according to the quick unqualified heavy metal chelator of finding of calculated result.
Description
Technical Field
The invention belongs to the technical field of chemical detection devices and detection methods, and particularly relates to a device and a method for detecting the effective content of a heavy metal chelating agent.
Background
The main component of the heavy metal chelating agent is sodium dimethyldithiocarbamate, which is called as sodium dimethyl dithiocarbamate for short. The sodium ferbamate is a heavy metal precipitator and a high-efficiency chelating agent of metal ions, is mainly used for industrial sewage heavy metal capture, electroplating industrial wastewater treatment, garbage power generation fly ash harmless treatment, heavy metal contaminated soil remediation, thermal power plant desulfurization wastewater heavy metal precipitation and the like in the industries of wet smelting impurity removal, textile printing and dyeing, nonferrous smelting and the like, is widely applied to the field of environmental protection, and has wide application markets at home and abroad. Because the product is a common chemical, the national standard and the industrial standard of the product are not existed at present. The effective component of the heavy metal chelating agent is sodium ferbamate, and the effective content of the heavy metal chelating agent needs to be detected before the heavy metal chelating agent leaves a factory or is used.
In the prior art, a titration method is generally adopted for detection, and specifically, a heavy metal chelating agent is dissolved in a proper amount of water, a phenolphthalein indicator is added, hydrochloric acid is dropwise added until the red color disappears, a proper amount of starch indicator is added immediately, and the solution is titrated by an iodine standard solution until the solution is blue and does not change color for 30 seconds, which is the key point. The volume of iodine consumed was recorded. The content of the sodium dimethyl dithiocarbamate in the total consumption, namely the effective content, can be calculated according to the consumption of various reagents, the mass of a sample and the molecular weight of the chelating agent.
The detection method has the advantages that the detection process is complex, the indication end point needs to be observed manually through naked eyes, the requirements on the experience of detection personnel are high, and the detection accuracy is not high. Multiple detections are typically required for a single sample to reduce detection errors. Due to the complex detection process, the heavy metal chelating agent is generally inspected in a batch sampling manner when leaving a factory, which may cause some heavy metal chelating agents which are not sampled to be unqualified.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device and a method for detecting the effective content of a heavy metal chelating agent, which can be used for quickly and automatically detecting and calculating the heavy metal chelating agent, marking the detected chelating agent barrel, quickly finding out unqualified heavy metal chelating agents according to the calculation result, ensuring that the heavy metal chelating agent leaving a factory or to be used in each barrel can be detected, ensuring the qualification rate of products leaving the factory, reducing the labor detection cost and improving the detection accuracy.
In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a heavy metal chelator effective content detection device, includes chelator bucket transmission device, chelator bucket transmission device one side is provided with the conveyer belt, evenly be provided with a plurality of transparent containers on the conveyer belt, follow the direction of conveyer belt evenly sets gradually ration play water mechanism, chelator sampling mechanism, ration play phenolphthalein mechanism, a plurality of ration goes out hydrochloric acid mechanism, ration goes out starch indicator mechanism and a plurality of ration go out iodine standard solution mechanism, conveyer belt one side still is provided with mark device, and is a plurality of ration goes out hydrochloric acid mechanism and a plurality of ration all is provided with on going out iodine standard solution mechanism and is used for detecting color sensor of transparent container internal color, chelator bucket transmission device the conveyer belt the ration goes out water mechanism the mark device the chelator sampling mechanism the ration goes out phenolphthalein mechanism, The control device controls the marking device to mark the chelating agent barrel, and the effective content of the chelating agent in the corresponding marked chelating agent barrel is calculated and recorded according to the total iodine standard solution consumption of the quantitative iodine standard solution mechanism.
In the above technical scheme, preferably, the conveyer belt is rotatably provided with a rotating shaft in a penetrating manner, the transparent container is fixed on the rotating shaft, the rotating shaft is provided with a gear, and the conveyer belt is internally provided with a rack meshed with the gear. When the structure is adopted, the gear is meshed with the rack in the process that the conveyor belt drives the transparent container to move, and the gear can drive the rotating shaft to rotate, so that the liquid in the transparent container is stirred.
In the above technical scheme, preferably, a notch is formed in the rack, a coil spring mounting groove is formed in the gear, a coil spring is arranged in the coil spring mounting groove, one end of the coil spring is fixedly connected with the gear, and the other end of the coil spring is fixedly connected with the conveyor belt. Adopt this structure when the gear does not meet the breach, can be at conveyer belt pivoted in-process to the coil spring energy storage, the energy of coil spring can release fast when meeting the breach to make the stirring effect of liquid better in the transparent container.
In the above technical solution, preferably, a plurality of water spraying ports are arranged below the conveyor belt, the water spraying ports are aligned with the transparent container to spray water to clean the transparent container, a plurality of air spraying ports are arranged on the rear side of the water spraying ports along the conveying direction of the conveyor belt, and the air spraying ports are aligned with the transparent container to spray air to dry the transparent container. Adopt this structure can be located the conveyer belt upside at transparent container and accomplish the automatic operation of wasing and drying after detecting for transparent container can circulate and detect, improves detection efficiency.
In the above technical solution, preferably, a waste liquid collecting tank is arranged below the conveyor belt. The waste liquid collecting tank is used for collecting waste liquid after detection, and when the conveying belt drives the transparent container to be below the conveying belt, the waste liquid in the transparent container can be automatically poured into the waste liquid collecting tank.
In the above technical scheme, preferably, the quantitative water outlet mechanism, the quantitative phenolphthalein outlet mechanism, the quantitative hydrochloric acid outlet mechanism, the quantitative starch indicator outlet mechanism and the quantitative iodine standard solution outlet mechanism all include a first bracket and a liquid outlet pipe arranged on the first bracket, and the liquid outlet pipe is connected with a metering pump.
Among the above-mentioned technical scheme, it is preferred, chelating agent sampling mechanism includes the second support, be provided with on the second support and stride locate chelating agent bucket transmission device with electronic slide rail on the conveyer belt, be provided with first cylinder on the slider of electronic slide rail, first cylinder is connected with the lift seat, the lift seat bottom is provided with bottom open-ended sampling tube, the lift seat top is provided with the second cylinder, the telescopic link of second cylinder stretches into in the sampling tube and be provided with the piston, when the telescopic link of second cylinder stretches out, the piston tip stretches out or flushes the opening of sampling tube. Adopt the automatic control sampling mechanism sample that this structure can be convenient, when taking a sample, electronic slide rail drive sampling tube to chelating agent bucket opening top, first cylinder stretches out to stretch into the chelating agent bucket with the sampling tube, the shrink of second cylinder makes the sampling tube absorb quantitative chelating agent, then first cylinder resets, electronic slide rail resets, the sampling tube is aimed at transparent container, first cylinder stretches out to make the sampling tube be close transparent container opening, later the second cylinder stretches out to make the chelating agent injected into in the transparent container.
In the above technical scheme, preferably, when the telescopic link of the second cylinder stretches out, the sampling tube with form the fluid infusion chamber between the piston, be provided with inlet channel and liquid outlet pipe on the fluid infusion chamber, be provided with the check valve on the inlet channel, be provided with the overflow valve on the liquid outlet pipe, the inlet channel is connected with the chelant bucket that is equipped with qualified chelant, works as when the telescopic link of the second cylinder stretches out, the chelant is inhaled from the chelant bucket that is equipped with qualified chelant in the fluid infusion chamber, works as when the telescopic link of the second cylinder retracts, the chelant in the fluid infusion chamber is squeezed into and is taken a sample in the chelant bucket. By adopting the structure, the chelating agent with the same quantity can be supplemented in the chelating agent barrel of the detected chelating agent while the chelating agent is absorbed, so that the chelating agent in the chelating agent barrel is prevented from being reduced in quality due to detection, and the shortage of the chelating agent in the chelating agent barrel when leaving the factory is prevented.
The detection method of the device for detecting the effective content of the heavy metal chelating agent comprises the following steps: 1, uniformly placing a chelating agent barrel to be detected on a chelating agent barrel conveying mechanism and opening a cover; the quantitative water outlet mechanism injects quantitative water into the transparent container on the conveyor belt and rotates along with the conveyor belt, and the conveyor belt drives the transparent container to sequentially pass through the chelating agent sampling mechanism, the quantitative phenolphthalein outlet mechanism, the quantitative hydrochloric acid outlet mechanisms, the quantitative starch outlet indicator mechanism and the quantitative iodine standard solution outlet mechanisms; 2, the chelating agent sampling mechanism takes out a fixed amount of chelating agent from the chelating agent barrel to be detected and injects the chelating agent into the transparent container below the fixed amount of chelating agent; 3, the quantitative phenolphthalein mechanism injects quantitative phenolphthalein into a transparent container below the quantitative phenolphthalein mechanism until the mixture turns red; 4, injecting hydrochloric acid into a transparent container below the quantitative hydrochloric acid discharging mechanisms by the quantitative hydrochloric acid discharging mechanisms until the color sensor on the quantitative hydrochloric acid discharging mechanism detects that the red color disappears; 5, the quantitative starch indicator mechanism injects quantitative starch indicator into a transparent container below the quantitative starch indicator mechanism; 6, injecting an iodine standard solution into a transparent container below the quantitative iodine standard solution mechanism by the quantitative iodine standard solution mechanism until the color sensor on the quantitative iodine standard solution mechanism detects that the color is light blue and does not fade for 30 seconds, and recording the total dosage of the iodine standard solution of the quantitative iodine standard solution mechanism; and 7, controlling the marking device to mark the chelating agent barrel by the control device, and calculating and recording the effective content of the chelating agent in the corresponding marked chelating agent barrel according to the total iodine standard solution consumption of the iodine standard solution quantifying and measuring mechanism.
Compared with the prior art, the invention has the following beneficial effects: the device and the method for detecting the effective content of the heavy metal chelating agent can be used for quickly and automatically detecting and calculating the heavy metal chelating agent, marking the detected chelating agent barrel, quickly finding out unqualified heavy metal chelating agents according to the calculation result, ensuring that the heavy metal chelating agent leaving a factory or to be used in each barrel can be detected, ensuring the qualification rate of products leaving the factory, reducing the labor detection cost and improving the detection accuracy.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a partial structural schematic diagram of a conveyor belt in an embodiment of the invention.
FIG. 3 is an exploded view of the conveyor and the transparent container mounting structure according to the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a mechanism for quantitatively discharging hydrochloric acid or a mechanism for quantitatively discharging iodine standard solution in the embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a chelating agent sampling mechanism according to an embodiment of the present invention.
Fig. 6 is a partially enlarged view of the extension rod of the second cylinder at a in fig. 5 when extended.
Fig. 7 is a partially enlarged view of the second cylinder of fig. 5 at a point a when the telescopic rod is retracted.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1 to 7, a device for detecting the effective content of a heavy metal chelating agent comprises a chelating agent barrel transmission mechanism 1, a conveyor belt 2 is arranged on one side of the chelating agent barrel transmission mechanism 1, a plurality of transparent containers 3 are uniformly arranged on the conveyor belt 2, a quantitative water outlet mechanism 4, a chelating agent sampling mechanism 5, a quantitative phenolphthalein outlet mechanism 6, two quantitative hydrochloric acid outlet mechanisms 7, a quantitative starch indicator mechanism 8 and four quantitative iodine standard solution outlet mechanisms 9 are sequentially and uniformly arranged along the direction of the conveyor belt 2, a marking device 10 is further arranged on one side of the conveyor belt 2, color sensors 11 for detecting the colors in the transparent containers 3 are respectively arranged on the two quantitative hydrochloric acid outlet mechanisms 7 and the four quantitative iodine standard solution outlet mechanisms 9, and the chelating agent barrel transmission mechanism 1, the conveyor belt 2, the quantitative water outlet mechanism 4, the marking device 10, the chelating agent sampling mechanism 5, a color sensor, The quantitative phenolphthalein discharging mechanism 6, the quantitative hydrochloric acid discharging mechanism 7, the quantitative starch indicator discharging mechanism 8, the quantitative iodine standard solution discharging mechanism 9 and the color sensor 11 are all connected with a control device (not shown in the figure), the control device controls the marking device 10 to mark the chelating agent barrel, and the effective content of the chelating agent in the corresponding marked chelating agent barrel is calculated and recorded according to the total iodine standard solution consumption of the quantitative iodine standard solution discharging mechanism 9. The control device comprises a computer, the marking device 10 is a code spraying device, the code spraying device is controlled by the computer to sequentially mark and spray codes on the outer side of the detected chelating agent barrel, the conveyor belt 2 is controlled by a servo motor to drive the transparent container 3 to sequentially pass through the quantitative water outlet mechanism 4, the chelating agent sampling mechanism 5, the quantitative phenolphthalein outlet mechanism 6, the two quantitative hydrochloric acid outlet mechanisms 7, the quantitative starch outlet indicator mechanism 8 and the four quantitative iodine standard solution outlet mechanisms 9, and the transparent container stays below the mechanisms for a certain time to inject corresponding reagents.
In this embodiment, the rotating shaft 21 is rotatably inserted into the conveyor belt 2, the transparent container 3 is fixed on the rotating shaft 21, the gear 22 is arranged on the rotating shaft 21, and the rack 23 meshed with the gear 22 is arranged in the conveyor belt 2. By adopting the structure, in the process that the conveyor belt 2 drives the transparent container 3 to move, the gear 22 is meshed with the rack 23, and the gear 22 can drive the rotating shaft 21 to rotate, so that the liquid in the transparent container 3 is stirred. The two sides of the conveying belt 2 are provided with insections which are matched with the insections on the two sides of the conveying belt wheel, the radius of the middle part of the conveying belt wheel is smaller than the radius of the two sides for the gear 22 to pass through, and the rack 23 is fixed and does not move along with the conveying belt 2.
In this embodiment, the rack 23 is provided with a notch 24, the gear 22 is provided with a coil spring installation groove 25, the coil spring installation groove 25 is provided with a coil spring 26, one end of the coil spring 26 is fixedly connected with the gear 22, and the other end of the coil spring 26 is fixedly connected with the conveyor belt 2. By adopting the structure, when the gear 22 does not meet the notch 24, the energy can be stored for the coil spring 26 in the rotating process of the conveyor belt 2, and the energy of the coil spring 26 can be quickly released when meeting the notch 24, so that the stirring effect of the liquid in the transparent container 3 is better.
In this embodiment, a plurality of water spraying ports 27 are arranged below the conveyor belt 2, the water spraying ports 27 are aligned with the transparent container 3 to spray water to clean the transparent container 3, a plurality of air spraying ports are arranged on the rear side of the water spraying ports 27 along the conveying direction of the conveyor belt 2, and the air spraying ports are aligned with the transparent container 3 to spray air to dry the transparent container 3. Adopt this structure can be located 2 upside of conveyer belt and accomplish the automatic operation of wasing and weathering after detecting at transparent container 3 for transparent container 3 can circulate and detect, improves detection efficiency. The water jet 27 is driven by a water pump to spray water, the air jet is driven by an air pump to jet air, and the water pump and the air pump are controlled by a control device.
In this embodiment, a waste liquid collecting tank 100 is provided below the conveyor belt 2. Waste liquid collecting tank 100 is used for collecting the waste liquid of accomplishing the detection, and when conveyer belt 2 drove transparent container 3 to conveyer belt 2 below, waste liquid in the transparent container 3 can be automatic pour into waste liquid collecting tank 100 in to waste liquid collecting tank 100 separates through the baffle, is close to the collection high concentration waste liquid of 2 export turnings of conveyer belt, leaves the low concentration waste liquid of the collection washing transparent container 3 of turnings.
In this embodiment, the quantitative water outlet mechanism 4, the quantitative phenolphthalein outlet mechanism 6, the two quantitative hydrochloric acid outlet mechanisms 7, the quantitative starch indicator outlet mechanism 8, and the four iodine standard solution outlet mechanisms 9 all include a first bracket 200 and a liquid outlet pipe 201 disposed on the first bracket 200, and the liquid outlet pipe 201 is connected with a metering pump (not shown in the figure). In the embodiment, the metering pump adopts high-precision diaphragm pumps which are respectively used for conveying corresponding liquids.
In this embodiment, chelating agent sampling mechanism 5 includes second support 51, be provided with on the second support 51 and stride the electronic slide rail 52 of locating on chelating agent bucket transmission device 1 and conveyer belt 2, be provided with first cylinder 53 on electronic slide rail 52's the slider, first cylinder 53 is connected with lift seat 54, lift seat 54 bottom is provided with bottom open-ended sampling tube 55, lift seat 54 top is provided with second cylinder 56, the telescopic link of second cylinder 56 stretches into in the sampling tube 55 and is provided with piston 57, when the telescopic link of second cylinder 56 stretches out, the opening of sampling tube 55 is stretched out or flushes to the piston 57 tip. Adopt the automatic control sampling mechanism that this structure can be convenient to take a sample, when taking a sample, electronic slide rail 52 drive sampling tube 55 to chelating agent bucket opening top, first cylinder 53 stretches out to stretch into the chelating agent bucket with sampling tube 55, the shrink of second cylinder 56 makes sampling tube 55 absorb quantitative chelating agent, then first cylinder 53 resets, electronic slide rail 52 resets, sampling tube 55 aims at transparent container 3, first cylinder 53 stretches out to make sampling tube 55 be close to the opening of transparent container 3, later second cylinder 56 stretches out to make the chelating agent be poured into in the transparent container 3.
In this embodiment, when the telescopic rod of the second cylinder 56 extends, a fluid infusion cavity 58 is formed between the sampling tube 55 and the piston 57, a fluid inlet pipeline 59 and a fluid outlet pipeline 510 are arranged on the fluid infusion cavity 58, a check valve 511 is arranged on the fluid inlet pipeline 59, an overflow valve 512 is arranged on the fluid outlet pipeline 510, the fluid inlet pipeline 59 is connected with a chelating agent barrel filled with qualified chelating agent, when the telescopic rod of the second cylinder 56 extends, the fluid infusion cavity 58 sucks the chelating agent from the chelating agent barrel filled with the qualified chelating agent, and when the telescopic rod of the second cylinder 56 retracts, the chelating agent in the fluid infusion cavity 58 is squeezed into the chelating agent barrel to be sampled. By adopting the structure, the chelating agent with the same quantity can be supplemented in the chelating agent barrel of the detected chelating agent while the chelating agent is absorbed, so that the chelating agent in the chelating agent barrel is prevented from being reduced in quality due to detection, and the shortage of the chelating agent in the chelating agent barrel when leaving the factory is prevented.
The detection method of the device for detecting the effective content of the metal chelating agent comprises the following steps: 1, uniformly placing a chelating agent barrel to be tested on a chelating agent barrel conveying mechanism 1, opening a cover, and manually placing or automatically placing by adopting a mechanical mechanism; the quantitative water outlet mechanism 4 injects quantitative water into the transparent container 3 on the conveyor belt 2 and rotates along with the conveyor belt 2, and the conveyor belt 2 drives the transparent container 3 to sequentially pass through the chelating agent sampling mechanism 5, the quantitative phenolphthalein outlet mechanism 6, the two quantitative hydrochloric acid outlet mechanisms 7 and the quantitative water outlet mechanismThe device comprises a starch indicator mechanism 8 and four iodine standard solution quantitative-discharging mechanisms 9, wherein a conveyor belt 2 is driven by a servo motor to stop rotating, so that a transparent container 3 stays below each mechanism for a certain time to inject corresponding reagents; 2, taking a fixed amount of the chelating agent from the chelating agent barrel to be detected by the chelating agent sampling mechanism 5, injecting the fixed amount of the chelating agent into the transparent container 3 below the fixed amount of the chelating agent, and injecting qualified chelating agent into the chelating agent barrel to be detected for supplement while taking the fixed amount of the chelating agent from the chelating agent barrel to be detected by the sampling mechanism 5; 3, a quantitative phenolphthalein discharging mechanism 6 injects a quantitative phenolphthalein into the transparent container 3 below the quantitative phenolphthalein discharging mechanism until the color of the phenolphthalein is red; 4, the quantitative hydrochloric acid discharging mechanism 7 injects hydrochloric acid into the transparent container 3 below the quantitative hydrochloric acid discharging mechanism 7 until the color sensor 11 on the quantitative hydrochloric acid discharging mechanism 7 detects that the red color disappears, the first quantitative hydrochloric acid discharging mechanism 7 is used for titrating to a near end point, and the quantitative hydrochloric acid discharging mechanism 7 on the rear side is used for titrating to the red color disappears; 5, a quantitative starch indicator mechanism 8 injects a quantitative starch indicator into the transparent container 3 below the quantitative starch indicator mechanism; 6, injecting an iodine standard solution into the transparent container 3 below the iodine standard solution quantifying mechanism 9 by the iodine standard solution quantifying mechanism 9 until a color sensor 11 on the iodine standard solution quantifying mechanism 9 detects that the color is light blue and does not fade within 30 seconds, titrating the iodine standard solution to a near end point by the first iodine standard solution quantifying mechanism 9, titrating the iodine standard solution to light blue by the rear iodine standard solution quantifying mechanism 9, or supplementing titration when the color fades within 30 seconds, and recording the total iodine standard solution consumption of the four iodine standard solution quantifying mechanisms 9 by the control device; and 7, controlling the marking device 10 to mark the chelating agent barrel by the control device, and calculating and recording the effective content of the chelating agent in the corresponding marked chelating agent barrel according to the total using amount of the iodine standard solution of the four iodine standard solution quantifying and outputting mechanisms 9. In this example, the reagents and solutions used were starch indicators: 0.5% (m/v), iodine standard solution: c (1/2I) 2 ) 0.1mol/L, phenolphthalein indicator: 1% (m/v), hydrochloric acid standard solution: 0.1 mol/L.
The specific calculation is executed by a program preinstalled in the control device, and the calculation formula is as follows:
in the formula: concentration of C-iodine standard solution, mol/L;
the dosage of the V-iodine standard solution, ml;
m-weight of sample, g;
m-chelator molecular weight 143.
After the calculation is completed, a table is generated in the control device:
the unqualified content of the chelating agent of the numbers can be quickly observed through a table generated by the control device, so that the corresponding chelating agent barrel can be quickly found out.
The device and the method for detecting the effective content of the heavy metal chelating agent can be used for quickly and automatically detecting and calculating the heavy metal chelating agent, marking the detected chelating agent barrel, quickly finding out unqualified heavy metal chelating agents according to the calculation result, ensuring that the heavy metal chelating agent leaving a factory or to be used in each barrel can be detected, ensuring the qualification rate of products leaving the factory, reducing the labor detection cost and improving the detection accuracy.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a heavy metal chelator effective content detection device for detect the effective component is the sodium dimethyl dithiocarbamate content of the heavy metal chelator of sodium dimethyl dithiocarbamate, its characterized in that: including chelant bucket transmission device (1), chelant bucket transmission device (1) one side is provided with conveyer belt (2), evenly be provided with a plurality of transparent container (3) on conveyer belt (2), follow the direction of conveyer belt (2) evenly is provided with ration play water mechanism (4), chelant sampling mechanism (5), ration phenolphthalein mechanism (6) in proper order, and a plurality of ration goes out hydrochloric acid mechanism (7), ration goes out starch indicator mechanism (8) and a plurality of ration go out iodine standard solution mechanism (9), conveyer belt (2) one side still is provided with mark device (10), and is a plurality of ration goes out hydrochloric acid mechanism (7) and a plurality of all be provided with on ration goes out iodine standard solution mechanism (9) and be used for detecting color sensor (11) of transparent container (3) internal color, chelant bucket transmission device (1), Conveyer belt (2) ration play water mechanism (4) marking device (10) chelating agent sampling mechanism (5) ration go out phenolphthalein mechanism (6), a plurality of ration go out hydrochloric acid mechanism (7) ration go out starch indicator mechanism (8), a plurality of ration go out iodine standard solution mechanism (9) and a plurality of color sensor (11) all are connected with controlling means, controlling means control marking device (10) mark the chelating agent bucket to according to a plurality of the total quantity of iodine standard solution that ration goes out iodine standard solution mechanism (9) calculates the chelating agent effective content and the record that reachs in the chelating agent bucket that corresponds the mark.
2. The apparatus for detecting the effective content of a heavy metal chelator according to claim 1, wherein: rotating shaft (21) is arranged on the conveyor belt (2) in a penetrating mode in a rotating mode, the transparent container (3) is fixed on the rotating shaft (21), a gear (22) is arranged on the rotating shaft (21), and a rack (23) meshed with the gear (22) is arranged in the conveyor belt (2).
3. The apparatus for detecting the effective content of a heavy metal chelator according to claim 2, wherein: the gear rack (23) is provided with a notch (24), a coil spring installation groove (25) is formed in the gear (22), a coil spring (26) is arranged in the coil spring installation groove (25), one end of the coil spring (26) is fixedly connected with the gear (22), and the other end of the coil spring (26) is fixedly connected with the conveyor belt (2).
4. The apparatus for detecting the effective content of a heavy metal chelator according to claim 1, wherein: conveyer belt (2) below is provided with a plurality of water jet (27), water jet (27) aim at transparent container (3) water spray is in order to wash transparent container (3), follow conveyer belt (2) direction of transfer, be located the rear side of water jet (27) is provided with a plurality of air jets, the air jet is aimed at transparent container (3) jet-blast in order to weather transparent container (3).
5. The apparatus for detecting the effective content of a heavy metal chelator according to claim 1, wherein: and a waste liquid collecting tank (100) is arranged below the conveyor belt (2).
6. The apparatus for detecting the effective content of a heavy metal chelator according to claim 1, wherein: quantitative water outlet mechanism (4), quantitative phenolphthalein outlet mechanism (6), it is a plurality of quantitative hydrochloric acid outlet mechanism (7), quantitative starch outlet indicator mechanism (8) and a plurality of quantitative iodine outlet standard solution mechanism (9) all include first support (200) and set up in drain pipe (201) on first support (200), drain pipe (201) are connected with the measuring pump.
7. The apparatus for detecting the effective content of a heavy metal chelator according to claim 1, wherein: chelating agent sampling mechanism (5) include second support (51), be provided with on second support (51) and stride locate chelating agent bucket transmission device (1) with electronic slide rail (52) on conveyer belt (2), be provided with first cylinder (53) on the slider of electronic slide rail (52), first cylinder (53) are connected with lift seat (54), lift seat (54) bottom is provided with bottom open-ended sampling tube (55), lift seat (54) top is provided with second cylinder (56), the telescopic link of second cylinder (56) stretches into in sampling tube (55) and is provided with piston (57), when the telescopic link of second cylinder (56) stretches out, piston (57) tip stretches out or flushes the opening of sampling tube (55).
8. The apparatus for detecting the effective content of a heavy metal chelator according to claim 7, wherein: when the telescopic link of second cylinder (56) stretches out, sampling tube (55) with form fluid infusion chamber (58) between piston (57), be provided with inlet line (59) and liquid outlet pipe (510) on fluid infusion chamber (58), be provided with check valve (511) on inlet line (59), be provided with overflow valve (512) on liquid outlet pipe (510), inlet line (59) are connected with the chelant bucket that is equipped with qualified chelant, and when the telescopic link of second cylinder (56) stretches out, fluid infusion chamber (58) is gone into the chelant bucket that is equipped with qualified chelant, and when the telescopic link of second cylinder (56) retracts, the chelant in fluid infusion chamber (58) is squeezed into by the sample in the chelant bucket.
9. The method for detecting the effective content of the heavy metal chelating agent as set forth in any one of claims 1 to 8, which comprises the following steps: 1, uniformly placing a chelating agent barrel to be detected on a chelating agent barrel conveying mechanism (1) and opening a cover; the quantitative water outlet mechanism (4) injects quantitative water into the transparent container (3) on the conveyor belt (2) and rotates along with the conveyor belt (2), and the conveyor belt (2) drives the transparent container (3) to sequentially pass through the chelating agent sampling mechanism (5), the quantitative phenolphthalein outlet mechanism (6), the quantitative hydrochloric acid outlet mechanisms (7), the quantitative starch outlet indicator mechanism (8) and the quantitative iodine standard solution outlet mechanisms (9); 2, the chelating agent sampling mechanism (5) takes out a fixed amount of chelating agent from the chelating agent barrel to be detected and injects the chelating agent into the transparent container (3) below the fixed amount of chelating agent; 3, the quantitative phenolphthalein discharging mechanism (6) injects quantitative phenolphthalein into the transparent container (3) below the quantitative phenolphthalein discharging mechanism until the color of the phenolphthalein is red; 4, injecting hydrochloric acid into the transparent container (3) below the quantitative hydrochloric acid discharging mechanisms (7) by the quantitative hydrochloric acid discharging mechanisms (7) until the color sensors (11) on the quantitative hydrochloric acid discharging mechanisms (7) detect that red color disappears; 5, the quantitative starch indicator discharging mechanism (8) injects a quantitative starch indicator into the transparent container (3) below the quantitative starch indicator discharging mechanism; 6, injecting an iodine standard solution into the transparent container (3) below the quantitative iodine standard solution mechanism (9) by the quantitative iodine standard solution mechanism (9) until the color sensor (11) on the quantitative iodine standard solution mechanism (9) detects that the color is light blue and does not fade for 30 seconds, and recording the total iodine standard solution consumption of the quantitative iodine standard solution mechanism (9); and 7, the control device controls the marking device (10) to mark the chelating agent barrel, and the effective content of the chelating agent in the corresponding marked chelating agent barrel is calculated and recorded according to the total iodine standard solution consumption of the quantitative iodine standard solution outlet mechanisms (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111323571.5A CN113970615B (en) | 2021-11-09 | 2021-11-09 | Device and method for detecting effective content of heavy metal chelating agent |
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