CN210166357U - BOD5 survey automatic reagent feeding device - Google Patents
BOD5 survey automatic reagent feeding device Download PDFInfo
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- CN210166357U CN210166357U CN201920782922.0U CN201920782922U CN210166357U CN 210166357 U CN210166357 U CN 210166357U CN 201920782922 U CN201920782922 U CN 201920782922U CN 210166357 U CN210166357 U CN 210166357U
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- water sample
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- 239000003153 chemical reaction reagent Substances 0.000 title claims abstract description 165
- 238000002347 injection Methods 0.000 claims abstract description 235
- 239000007924 injection Substances 0.000 claims abstract description 235
- 230000007246 mechanism Effects 0.000 claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000003756 stirring Methods 0.000 claims abstract description 48
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000003814 drug Substances 0.000 claims abstract description 16
- 241001411320 Eriogonum inflatum Species 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000003556 assay Methods 0.000 claims 9
- 238000000034 method Methods 0.000 abstract description 15
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 3
- NLLBACCRJXJHPL-UHFFFAOYSA-M [N-]=[N+]=[N-].[Na+].[I-].[K+] Chemical compound [N-]=[N+]=[N-].[Na+].[I-].[K+] NLLBACCRJXJHPL-UHFFFAOYSA-M 0.000 description 3
- 229910052740 iodine Inorganic materials 0.000 description 3
- 239000011630 iodine Substances 0.000 description 3
- 229940099596 manganese sulfate Drugs 0.000 description 3
- 239000011702 manganese sulphate Substances 0.000 description 3
- 235000007079 manganese sulphate Nutrition 0.000 description 3
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- 238000012258 culturing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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Abstract
The utility model discloses an automatic dosing device for BOD5 determination, which comprises a workbench, a water sample reagent bottle arranged on the workbench, a three-axis linkage mechanism arranged on the workbench, and an automatic injection mechanism arranged on the three-axis linkage mechanism; the automatic injection mechanism is used for adding liquid medicament into the water sample reagent bottle; the three-axis linkage mechanism comprises a Y-direction moving device arranged on the workbench, a portal frame arranged on the Y-direction moving device, an X-direction moving device arranged on the portal frame, an injection mechanism fixing seat arranged on the X-direction moving device, and a Z-direction moving device arranged on the injection mechanism fixing seat. The beneficial effects of the utility model are that, water sample reagent bottle can once seal the water sample that awaits measuring to under the condition of not opening the bottle plug, accessible injection port adds the medicine many times, accomplishes reagent interpolation, stirring process voluntarily, and in the whole measurement process, the sample remains the isolation with the atmosphere throughout, has guaranteed measuring result's accuracy, has reduced operator working strength.
Description
Technical Field
The utility model belongs to chemistry survey equipment field relates to a BOD5 survey automatic reagent feeding device.
Background
BOD5 is determined according to national standards and mainly comprises two parts: and (4) determining the dissolved oxygen content in the water sample before culture and the dissolved oxygen content after 120h of culture. The procedure for measuring dissolved oxygen before and after the cultivation was completely the same. The process of measuring the dissolved oxygen mainly comprises the following steps: 1. the fixation of dissolved oxygen is realized by adding manganese sulfate and alkaline potassium iodide sodium azide with certain concentration into a water sample in sequence; 2. the separation of iodine is realized by adding sulfuric acid with certain concentration into a water sample; 3. the precipitated iodine was titrated with sodium thiosulfate to determine the oxygen concentration.
At present, the method for determining the iodine content according to the national standard adopts a manual operation method to realize the precipitation of the iodine, and the specific method comprises the following steps: adding a sufficient amount of water sample into the dissolved oxygen bottle by using an overflow method, so that the water sample partially overflows the dissolved oxygen bottle → covering the bottle stopper → pouring out excessive water sample of the bottle mouth → opening the bottle stopper → adding 1ml of manganese sulfate solution → covering the bottle stopper → pouring out excessive waste liquid of the bottle mouth → shaking and mixing → standing → adding alkaline potassium iodide sodium azide solution 2ml → covering the bottle stopper → pouring out excessive waste liquid of the bottle mouth → shaking and mixing → standing → opening the bottle stopper → adding sulfuric acid → covering the bottle stopper → pouring out excessive waste liquid of the bottle mouth → shaking and mixing till the precipitate is dissolved and stands for 5 minutes, and then carrying out the titration experiment. The operating method mainly has the following disadvantages:
1. due to the special operation of water sample dissolved oxygen determination, redundant liquid can be left at the bottleneck of the dissolved oxygen bottle when a water sample or a medicine is added, 3 medicines need to be added in sequence during the operation, the medicines are uniformly mixed by shaking for three times, the redundant liquid at the bottleneck of each time needs to be poured, more or less samples and sample medicine mixed liquid (containing acid or alkali) can be scattered on a table top or splashed on the skin and clothes of an operator in the operations, and pollution or injury is caused;
2. different reagents need to be added 3 times in sequence for fixing dissolved oxygen and separating out iodine, the processes of opening, covering and plugging and the like can be related to 3 times, and the manual operation is complicated, mechanical and large in workload; meanwhile, the sample can be in contact with air when the plug is opened, and oxygen in the air can have certain influence on the measurement result.
3. For the water sample needing to be cultured, after culturing for 120h in an incubator, 3 reagents are added on time and stirred uniformly. After the reaction is finished, a certain amount of water sample is extracted from the water sample reagent bottle and titrated by sodium thiosulfate to determine dissolved oxygen, and 3 reagents are added too early or too late to generate large deviation, so that the accuracy of determination data is influenced. The time point of the measurement is very mechanical, and the requirement on the working time of measurement personnel is very strict. (for water samples which do not need to be cultured, 3 reagents can be directly added, a certain amount of water samples are extracted from a water sample reagent bottle after the reaction is finished and titrated by sodium thiosulfate, and the dissolved oxygen is measured.)
Disclosure of Invention
The utility model provides a BOD5 determination automatic medicine-feeding device which is safe and reliable, can prevent the liquid medicine from contacting the air and can automatically feed medicine, and overcomes the defects of the prior art.
The utility model discloses a realize through following technical scheme:
the utility model provides a BOD5 survey automatic reagent feeding device which characterized in that: comprises a workbench, a water sample reagent bottle arranged on the workbench, a three-axis linkage mechanism arranged on the workbench, and an automatic injection mechanism arranged on the three-axis linkage mechanism; the automatic injection mechanism is used for adding liquid medicament into the water sample reagent bottle;
the three-axis linkage mechanism comprises a Y-direction moving device arranged on the workbench, a portal frame arranged on the Y-direction moving device, an X-direction moving device arranged on the portal frame, an injection mechanism fixing seat arranged on the X-direction moving device, and a Z-direction moving device arranged on the injection mechanism fixing seat; the automatic injection mechanism is arranged on the injection mechanism fixing seat.
The water sample reagent bottle comprises a bottle body, a bottle plug inserted into a bottle opening of the bottle body and a bottle plug cover arranged on the bottle plug; an overflow liquid collecting U-shaped groove which is integrally formed with the bottle body is arranged on the outer side of the bottle mouth; an overflow one-way valve and an injection one-way valve are arranged in the bottle stopper; the overflow one-way valve is connected with an overflow port of the bottle plug and is also connected with the space in the bottle body through an overflow pipe for discharging redundant liquid; the injection one-way valve is connected with an injection port of the bottle stopper and is also connected with the space in the bottle body through an injection tube, and is used for injecting liquid into the bottle and sealing the bottle.
In the three-axis linkage mechanism, a Y-direction moving device adopts a lead screw nut pair and comprises a Y-direction stepping motor, a Y-direction lead screw and a Y-direction guide rail which are arranged on the side surface of a workbench, wherein the Y-direction stepping motor is connected with and drives the Y-direction lead screw; and a nut for a Y-direction screw rod is fixed at the lower end of the portal frame, is sleeved on the Y-direction screw rod and drives the portal frame to move back and forth, and meanwhile, the lower end of the portal frame is sleeved on the Y-direction guide rail and slides back and forth along the Y-direction guide rail.
In the three-axis linkage mechanism, an X-direction moving device adopts a lead screw nut pair and comprises an X-direction stepping motor, an X-direction lead screw and an X-direction guide rail which are arranged on a portal frame, wherein the X-direction stepping motor is connected with and drives the X-direction lead screw; the injection mechanism fixing seat is fixed with a nut for an X-direction lead screw, the nut is sleeved on the X-direction lead screw and drives the injection mechanism fixing seat to move left and right, and meanwhile, the injection mechanism fixing seat is sleeved on the X-direction guide rail and slides left and right along the X-direction guide rail.
The automatic injection mechanism comprises three reagent bottles, wherein reagent pumps are arranged in the reagent bottles and connected with reagent injection catheters, and the tail ends of the reagent injection catheters are connected with reagent injection heads; the reagent bottle is arranged in a groove on the injection mechanism fixing seat, and the reagent injection conduit and the reagent injection head are respectively inserted into a limiting hole on the injection mechanism fixing seat.
In the three-axis linkage mechanism, a Z-direction moving device adopts an electromagnet which is fixedly arranged on a fixed seat of an injection mechanism, a reagent injection head is fixedly connected with a permanent magnet through an injection moving plate, the permanent magnet is positioned below the electromagnet, the electromagnet and the permanent magnet are attracted or separated, so that the permanent magnet is driven to lift, and the permanent magnet drives the reagent injection head to lift; the injection moving plate is screwed into the guide shaft through threads, and the smooth lower end of the guide shaft is positioned and guided in the guide hole of the injection mechanism fixing seat.
Stirring the liquid in the water sample reagent bottle by using an electromagnetic stirrer, wherein an electromagnetic stirring seat is fixed in a groove of a workbench, the water sample reagent bottle is placed in the groove of the workbench and positioned on the electromagnetic stirring seat, an electromagnetic stirring rod is placed in the water sample reagent bottle, and the electromagnetic stirring seat controls the electromagnetic stirring rod to move to stir the liquid in the bottle; the grooves of the workbench are arranged in rows and columns, and each groove can be used for placing a water sample reagent bottle for coordinate positioning by a three-axis linkage mechanism; the worktable is provided with a plurality of lugs so as to move the BOD5 measuring automatic medicine feeding device.
The utility model discloses a BOD5 survey automatic reagent feeding device still includes control system, and it adopts singlechip or PLC controller, control system connection control triaxial link gear, reagent pump, electromagnetism stirring seat.
In the bottle plug of the water sample reagent bottle, the overflow one-way valve comprises an overflow one-way valve core, an overflow one-way valve spring and an overflow one-way valve plug which are sequentially contacted; the overflow check valve plug is fixed on the bottle plug, an overflow port communicated with the overflow valve cavity is arranged on the side surface of the bottle plug, the lower part of the bottle plug is connected with the overflow pipe, the overflow check valve core is used for plugging the overflow port at the upper end of the overflow pipe, the position of the overflow port is higher than the overflow check valve sealing port, and the lower end of the overflow pipe is positioned in the bottle body; the injection check valve comprises an injection check valve core, an injection check valve spring and an injection tube, wherein the injection check valve core, the injection check valve spring and the injection tube are sequentially contacted, the upper end of the injection tube is fixed in an injection check valve cavity of the bottle plug, the lower end of the injection check valve core is positioned in the bottle body, the upper end of the injection check valve core is slidably positioned in the injection port, the lower end of the injection check valve core is positioned in the injection check valve cavity, the lower end of the injection check valve core is used for plugging the injection port, a gap is formed between the middle upper part of the injection check valve core.
In the water sample reagent bottle, a bottle plug cover is arranged on a bottle plug and comprises a permanent magnet, the permanent magnet is detachably arranged at the upper end of the bottle plug, and the bottle plug cover can control the opening of an overflow one-way valve and an injection one-way valve; the overflow one-way valve plug and the overflow one-way valve core are made of magnetic materials and can be adsorbed by a magnet; the injection one-way valve core is a permanent magnet, and the magnetic pole at the upper end of the injection one-way valve core is the same as the magnetic pole at the bottom of the bottle stopper cover and is mutually exclusive.
In the water sample reagent bottle, the rubber sleeve is sleeved outside the permanent magnet of the bottle plug cover, the bottle plug cover is tightly and firmly sleeved on the upper part of the bottle plug through the rubber sleeve, an exhaust hole is formed between the bottle plug cover and the rubber sleeve and is communicated with the injection port so as to exhaust air in the bottle, and the diameter of the exhaust hole is smaller than that of the injection port; the outer side of the permanent magnet is provided with a circle of bulges, the inner side of the rubber sleeve is provided with a circle of grooves, and the grooves are sleeved on the bulges so that the permanent magnet is firmly combined with the rubber sleeve;
in the bottle stopper, the lower end of the injection tube is higher than the lower end of the overflow tube by a certain height, so that liquid which is just injected is prevented from overflowing; the length D1 of the injection tube penetrating into the liquid is 2-3cm, and the distance D2 between the overflow tube opening and the bottle bottom is 3-5cm, so that the stirring function is not influenced when the electromagnetic stirring rod is placed in the bottle.
The injection port is positioned on the central line of the bottle stopper, so that the coordinate positioning and the programming of a control system are facilitated.
The beneficial effects of the utility model are that, this BOD5 survey automatic reagent feeding device, simple structure, convenient to use, degree of automation are high, can accomplish the interpolation work of three kinds of reagents automatically. And the device has timing, reservation effect, to the water sample that needs to cultivate, puts into the incubator with the device, can carry out the punctual reagent adding work of accomplishing after 120h cultivates, is favorable to the degree of accuracy of measuring result, reduces the harsh requirement to measurement personnel's operating time.
This water sample reagent bottle that BOD5 survey automatic reagent feeding device adopted can once seal the water sample that awaits measuring to under the condition of not opening the bottle plug, accessible injection port adds the medicine many times, and stirs through the electromagnetic stirring rod, accomplishes reagent interpolation, stirring process voluntarily, and in the whole measurement process, the sample remains the isolation with the atmosphere throughout, has guaranteed measuring result's accuracy, has reduced operator working strength, labour saving and time saving.
This BOD5 survey automatic reagent feeding device adopts water sample reagent bottle can collect the overflow liquid that causes when reagent adds, and unnecessary waste liquid can automatic discharge to the U-shaped groove promptly to after all reagent add to finish, with overflow liquid once only before titrating can, then open the bottle plug and take out appointed volume liquid and titrate the operation. Effectively prevent to pollute skin, clothes, desktop of operating personnel, avoid the injury to operating personnel.
The height difference between the lower end of the overflow pipe orifice and the lower end of the injection pipe orifice of the water sample reagent bottle adopted by the BOD5 determination automatic dosing device can prevent injection reagents from directly flowing out through the overflow pipe, and the experimental quality is ensured. The water sample reagent bottle and the bottle plug thereof are suitable for automatic injection of reagents and have high universality.
Drawings
The attached drawing is the structure schematic diagram of the utility model.
Fig. 1 is the overall structure perspective view of the utility model, fig. 2 is the overall structure rear view, fig. 3 is the automatic injection mechanism, fig. 4 is the injection head, fig. 5 is the water sample reagent bottle, fig. 6 is the reagent bottle.
2 workbench, 3 water sample reagent bottles, 4 portal frames, 5X-direction feed mechanisms (50X-direction stepping motors, 51X-direction guide rails, 52X-direction couplers, 53X-direction lead screws, 54X-direction lead screw nuts, 55X-direction dragging blocks, 56X-direction guide rail bearings, 57X-direction lead screw bearing blocks), 6 automatic injection mechanisms (601 automatic injection mechanism fixing seats, 602 reagent bottle I, 603 reagent bottle II, 604 reagent bottle III, 605 reagent injection conduit III, 606 electromagnets, 607 permanent magnets, 608 injection movable plate guide shafts, 609 injection movable plates, 610 reagent 1 injection heads, 611 reagent pump I, 612 reagent pump II, 613 reagent pump III, 614 reagent injection conduit I, 615 reagent injection conduit II, 616 reagent 2 injection heads, 617 reagent 3 injection heads), 7Y-direction feed mechanisms (70Y-direction stepping motors, 71Y-direction guide rails, 72Y-direction couplers, 73Y-direction lead screws, 71Y-direction lead screws, etc.), A nut for a 74Y-direction screw rod, a 75Y-direction dragging block, a 76Y-direction guide rail bearing, a 77Y-direction screw rod bearing seat, a 78 portal frame left fixing plate and a 79 portal frame right fixing plate). 20 lugs, 21 electromagnetic stirring seats and 30 electromagnetic stirring rods.
In the water sample reagent bottle, 8 bottle plug cover permanent magnets, 9 injection ports, 10 injection check valve cores, 11 injection check valve springs, 12 injection pipes, 13 overflow pipes, 14 overflow liquid collecting U-shaped grooves, 15 exhaust holes, 16 bottle bodies, 17 bottle plugs, 18 bulges, 19 overflow check valve cores, 22 overflow ports, 23 overflow check valve springs, 24 overflow check valve plugs and 25 bottle plug cover rubber sleeves.
Detailed Description
The attached drawing is a concrete embodiment of the utility model.
An automatic medicine adding device for BOD5 determination comprises a workbench 2, a water sample reagent bottle 3 arranged on the workbench, a three-axis linkage mechanism arranged on the workbench, and an automatic injection mechanism 6 arranged on the three-axis linkage mechanism; the automatic injection mechanism is used for adding liquid medicament into the water sample reagent bottle;
the three-axis linkage mechanism comprises a Y-direction moving device arranged on the workbench, a portal frame 4 arranged on the Y-direction moving device, an X-direction moving device arranged on the portal frame, an injection mechanism fixing seat 601 arranged on the X-direction moving device, and a Z-direction moving device arranged on the injection mechanism fixing seat; the automatic injection mechanism 6 is mounted on the injection mechanism mount 601.
The water sample reagent bottle comprises a bottle body 16, a bottle stopper 17 plugged into the bottle opening of the bottle body and a bottle stopper cover arranged on the bottle stopper; an overflow liquid collecting U-shaped groove 14 which is integrally formed with the bottle body is arranged on the outer side of the bottle mouth; an overflow one-way valve and an injection one-way valve are arranged in the bottle stopper; the overflow one-way valve is connected with an overflow port 22 of the bottle stopper and is also connected with the space in the bottle body through an overflow pipe 13 for flowing out redundant liquid; the injection one-way valve is connected with an injection port 9 of the bottle stopper and is also connected with the space in the bottle body through an injection tube 12 and used for injecting liquid into the bottle and sealing.
In the three-axis linkage mechanism, a Y-direction moving device adopts a lead screw nut pair and comprises a Y-direction stepping motor 70, a Y-direction lead screw 73 and a Y-direction guide rail 71 which are arranged on the side surface of the workbench 2, and the Y-direction stepping motor is connected with and drives the Y-direction lead screw; a nut 74 for a Y-direction screw rod is fixed at the lower end of the portal frame 4, the nut is sleeved on the Y-direction screw rod and drives the portal frame to move back and forth, and meanwhile, the lower end of the portal frame is sleeved on the Y-direction guide rail and slides back and forth along the Y-direction guide rail.
In the three-axis linkage mechanism, the X-direction moving device adopts a lead screw nut pair and comprises an X-direction stepping motor 50, an X-direction lead screw 53 and an X-direction guide rail 51 which are arranged on the portal frame 4, and the X-direction stepping motor is connected with and drives the X-direction lead screw; the injection mechanism fixing seat is fixed with a nut 54 for an X-direction lead screw, the nut is sleeved on the X-direction lead screw and drives the injection mechanism fixing seat 601 to move left and right, and meanwhile, the injection mechanism fixing seat is sleeved on the X-direction guide rail and slides left and right along the X-direction guide rail.
The automatic injection mechanism comprises three reagent bottles 602, wherein a reagent pump 611 is arranged in each reagent bottle, the reagent pump is connected with a reagent injection conduit 614, and the tail end of the reagent injection conduit is connected with a reagent injection head 610; the reagent bottle is arranged in a groove on the injection mechanism fixing seat, and the reagent injection conduit and the reagent injection head are respectively inserted into a limiting hole on the injection mechanism fixing seat.
In the three-axis linkage mechanism, a Z-direction moving device adopts an electromagnet 606 which is fixedly arranged on a fixed seat 601 of the injection mechanism, a reagent injection head is fixedly connected with a permanent magnet 607 through an injection moving plate 609, the permanent magnet is positioned below the electromagnet, and the electromagnet and the permanent magnet are attracted or separated, so that the permanent magnet is driven to lift, and the permanent magnet drives a reagent injection head 610 to lift;
the injection moving plate 609 is screwed into the guide shaft 608 through a screw thread, and the smooth lower end of the guide shaft is positioned and guided in the guide hole of the injection mechanism fixing seat.
Stirring the liquid in the water sample reagent bottle by using an electromagnetic stirrer, wherein an electromagnetic stirring seat is fixed in a groove of the workbench 2, the water sample reagent bottle 3 is placed in the groove of the workbench and is positioned on the electromagnetic stirring seat 21, an electromagnetic stirring rod 30 is placed in the water sample reagent bottle, and the electromagnetic stirring seat controls the electromagnetic stirring rod to move to stir the liquid in the bottle; the grooves of the workbench are arranged in rows and columns, and each groove can be used for placing a water sample reagent bottle for coordinate positioning by a three-axis linkage mechanism; several lugs 20 are provided on the table to move the BOD5 measurement auto-feed.
The electromagnetic stirrer belongs to the existing product and comprises an electromagnetic stirring seat and an electromagnetic stirrer which are matched with each other.
The utility model discloses a BOD5 survey automatic reagent feeding device still includes control system, and it adopts singlechip or PLC controller, control system connection control triaxial link gear, reagent pump, electromagnetism stirring seat.
In the bottle plug of the water sample reagent bottle, the overflow one-way valve comprises an overflow one-way valve core 19, an overflow one-way valve spring 23 and an overflow one-way valve plug 24 which are contacted in sequence; the overflow check valve plug is fixed on the bottle plug, the side surface of the bottle plug is provided with an overflow port 22 communicated with the overflow valve cavity, the lower part of the bottle plug is connected with the overflow pipe 13, the overflow check valve core is used for plugging the overflow port at the upper end of the overflow pipe, the position of the overflow port is higher than the overflow check valve sealing port, and the lower end of the overflow pipe is positioned in the bottle body;
the injection check valve comprises an injection check valve core 10, an injection check valve spring 11 and an injection pipe 12 which are contacted in sequence, the upper end of the injection pipe is fixed in an injection check valve cavity of the bottle plug, the lower end of the injection check valve core is positioned in the bottle body, the upper end of the injection check valve core is slidably positioned in the injection port, the lower end of the injection check valve core is positioned in the injection check valve cavity, the lower end of the injection check valve core is used for plugging the injection port, a gap is reserved between the middle upper part of the injection check valve core and the injection port, and the gap is used for injecting liquid.
In the water sample reagent bottle, a bottle plug cover is arranged on a bottle plug and comprises a permanent magnet 8, the permanent magnet is detachably arranged at the upper end of the bottle plug, and the bottle plug cover can control the opening of an overflow one-way valve and an injection one-way valve; the overflow one-way valve plug and the overflow one-way valve core are made of magnetic materials and can be adsorbed by a magnet; the injection one-way valve core is a permanent magnet, and the magnetic pole at the upper end of the injection one-way valve core is the same as the magnetic pole at the bottom of the bottle stopper cover and is mutually exclusive.
In the water sample reagent bottle, the rubber sleeve 25 is sleeved outside the permanent magnet of the bottle plug cover, the bottle plug cover is tightly and firmly sleeved on the upper part of the bottle plug through the rubber sleeve, the exhaust hole 15 is formed between the bottle plug cover and the rubber sleeve and is communicated with the injection port 9 so as to exhaust air in the bottle, and the diameter of the exhaust hole is smaller than that of the injection port; a circle of bulges 18 are arranged on the outer side of the permanent magnet, a circle of grooves are arranged on the inner side of the rubber sleeve, and the grooves are sleeved on the bulges so that the permanent magnet is firmly combined with the rubber sleeve;
in the bottle stopper, the lower end of the injection tube is higher than the lower end of the overflow tube by a certain height, so that liquid which is just injected is prevented from overflowing; the length D1 of the injection tube penetrating into the liquid is 2-3cm, and the distance D2 between the overflow tube opening and the bottle bottom is 3-5cm, so that the stirring function is not influenced when the electromagnetic stirring rod is placed in the bottle.
The injection port is positioned on the central line of the bottle stopper, so that the coordinate positioning and the programming of a control system are facilitated.
Description of connection of X-direction feed mechanism: an X-direction stepping motor is fixed on the portal frame, one end of an X-direction coupler 52 is connected with the X-direction stepping motor, and the other end of the X-direction coupler is connected with an X-direction lead screw; the other end of the X-direction lead screw is arranged on the other side of the portal frame through a bearing and a bearing seat; an X-direction lead screw nut is arranged on an X-direction dragging block, and the X-direction dragging block and an X-direction guide rail bearing (linear bearing) are arranged on a fixed seat of the automatic injection mechanism; the X-direction guide rail is matched with the X-direction guide rail bearing.
Connection description of Y-direction feeding mechanism: a Y-direction stepping motor is fixed on the workbench, one end of a Y-direction coupler is connected with the Y-direction stepping motor, and the other end of the Y-direction coupler is connected with a Y-direction lead screw; the other end of the Y-direction screw rod is arranged at the other end of the workbench through a bearing and a bearing seat; a Y-direction lead screw nut is arranged on a Y-direction dragging block, the Y-direction dragging block and a left Y-direction guide rail bearing (linear bearing) are arranged on a left fixing plate of the portal frame, and a right Y-direction guide rail bearing is arranged on a right fixing plate of the portal frame; the Y-direction guide rail is matched with the Y-direction guide rail bearing.
Description of automatic injection mechanism: manganese sulfate, alkaline potassium iodide sodium azide and sulfuric acid solution are respectively filled in the reagent bottle I, the reagent bottle II and the reagent bottle III; a reagent pump is arranged in each reagent bottle, each reagent pump is connected with a reagent injection conduit (shown in figure 6), and the other end of each reagent injection conduit is connected with an injection head; the reagent pump is an acid and alkali resistant pump, the reagent injection conduit is an acid and alkali resistant flexible pipe with certain elasticity, and the injection head is an acid and alkali resistant hard pipe; the reagent injection catheter is in clearance fit with the automatic injection mechanism fixing seat, the injection head is in close fit with the injection moving plate, the injection head is in clearance fit with the automatic injection mechanism fixing seat, and the injection moving plate drives the injection head to move up and down when moving up and down, as shown in fig. 4. The injection moving plate guide shaft is closely matched with the injection moving plate, the injection moving plate is driven to move up and down when moving up and down, and the lower end of the injection moving plate guide shaft is in clearance fit with the automatic injection fixed plate. The permanent magnet is fixed on the injection moving plate, the electromagnet is fixed on the fixed seat of the automatic injection mechanism, and when the injection moving plate is positioned at the lowest position, the gap between the electromagnet and the permanent magnet is 2-4 mm. (as shown in FIG. 3)
A plurality of water sample reagent bottle mounting positions (grooves) are uniformly distributed on the workbench, and an electromagnetic stirring seat is mounted at each mounting position (groove) and fixed on the workbench (as shown in figure 5). Four lugs are arranged at two ends of the workbench to facilitate the movement of the automatic dosing device.
The control system is used for controlling the Y-direction feeding motion of the portal frame, the X-direction feeding of the automatic injection mechanism, the stirring of the electromagnetic stirring seat, the opening and closing of the reagent pump, and the power-on sequence and power-off of the electromagnet.
After the device is initially electrified, the electromagnet of the automatic injection mechanism is not electrified, the permanent magnet drives the injection moving plate to move upwards and attract the electromagnet under the action of the permanent magnet, and the injection head is located at the highest position at the moment. An electromagnetic stirring rod is placed in each water sample reagent bottle in advance, and a water sample to be detected is filled in the water sample reagent bottle by using an overflow method and sealed by using a bottle plug, which is as follows. Filling a water sample in the water sample reagent bottle, then covering the bottle plug on the bottle plug, simultaneously opening the injection one-way valve and the overflow one-way valve under the magnetic action of the bottle plug cover, and putting the bottle plug into the bottle mouth and plugging the bottle plug. Because injection check valve and overflow check valve are all opened this moment, when adopting the sealed water sample of overflow method, can not have gas in injection tube and the overflow pipe, unnecessary water sample that awaits measuring flows through the overflow mouth, and the overflow water sample is collected through overflow U type groove. After the bottle plug is plugged tightly, the bottle plug cover is taken down, the injection one-way valve and the overflow one-way valve are closed, and the sample to be detected is kept in a sealing state.
And sequentially placing the water sample reagent bottles on the electromagnetic stirring seats. After all the water sample reagent bottles are placed, firstly, the reagent 1 is injected. The injection working process comprises the following steps: by utilizing coordinate positioning, the control system controls the feeding in the X direction and the Y direction to enable the injection head of the reagent 1 to move right above a first water sample reagent bottle (coordinate) to be injected, at the moment, the injection head of the reagent 1 is aligned with the central injection port of the water sample reagent bottle plug, then the control system enables the electromagnet of the automatic injection mechanism to be electrified and ensures that the polarity of the lower end of the electromagnet is the same as the polarity of the upper end of the permanent magnet, under the action of magnetic repulsion, the permanent magnet drives the injection moving plate to move downwards and enables the injection head to be tightly matched with the central hole of the water sample reagent bottle plug, then the control system controls the reagent pump I to inject the reagent 1 with a certain volume into the water sample reagent bottle through the reagent injection conduit, after the injection is finished, the control system controls the current of the electromagnet to be reversed, at the moment, the polarity, the permanent magnet drives the injection moving plate to move upwards and attract the electromagnet, and the injection head of the reagent 1 is separated from the bottle stopper injection port of the water sample reagent bottle. (during injection, an injection one-way valve of a bottle plug of the water sample reagent bottle is opened under injection pressure, when the reagent is injected, the pressure in the bottle is increased, an overflow one-way valve is opened, redundant liquid is discharged through an overflow pipe and is collected in an overflow liquid collection U-shaped groove, after the injection is stopped, the overflow one-way valve is closed, and the injection one-way valve is closed.) then the control system controls an electromagnetic stirring seat below the first water sample reagent bottle to work, an electromagnetic stirring rod in the first reagent bottle starts stirring under the action of the electromagnetic stirring seat, after the stirring is carried out for a certain time, the control system controls the electromagnetic stirring seat to stop working, and the addition of the reagent 1 in the first water sample reagent bottle is completed.
And the control system controls the feeding in the X direction and the feeding in the Y direction, so that the injection head of the reagent 1 moves to the coordinates of the central point of the bottle mouth of the second water sample reagent bottle to be injected, and the injection of the reagent 1 in the second water sample reagent bottle is completed according to the same working steps. Until the injection of all the water sample reagent bottles 1 is completed.
According to the same steps, the injection head position of the reagent 2 is controlled to realize the injection of the reagent 2 in all the water sample reagent bottles, and the injection head position of the reagent 3 is controlled to realize the injection of the reagent 3 in all the water sample reagent bottles.
This BOD5 survey automatic reagent feeding device to the water sample that does not need to cultivate, can directly add reagent. The control system of the BOD5 measuring automatic medicine feeding device has timing and reservation functions. To the water sample that needs to cultivate, place water sample reagent bottle in the device, put into the incubator with the device, can realize 120h water sample cultivation back, accomplish the automatic injection of 3 kinds of reagents on time, avoided the strict requirement to operating personnel operating time among the traditional manual operation process.
Claims (10)
1. The utility model provides a BOD5 survey automatic reagent feeding device which characterized in that: comprises a workbench, a water sample reagent bottle arranged on the workbench, a three-axis linkage mechanism arranged on the workbench, and an automatic injection mechanism arranged on the three-axis linkage mechanism; the automatic injection mechanism is used for adding liquid medicament into the water sample reagent bottle;
the three-axis linkage mechanism comprises a Y-direction moving device arranged on the workbench, a portal frame arranged on the Y-direction moving device, an X-direction moving device arranged on the portal frame, an injection mechanism fixing seat arranged on the X-direction moving device, and a Z-direction moving device arranged on the injection mechanism fixing seat; the automatic injection mechanism is arranged on the injection mechanism fixing seat;
the water sample reagent bottle comprises a bottle body and a bottle stopper plugged into a bottle opening of the bottle body; an overflow liquid collecting U-shaped groove which is integrally formed with the bottle body is arranged on the outer side of the bottle mouth; an overflow one-way valve and an injection one-way valve are arranged in the bottle stopper; the overflow one-way valve is connected with an overflow port of the bottle plug and is also connected with the space in the bottle body through an overflow pipe for discharging redundant liquid; the injection one-way valve is connected with an injection port of the bottle stopper and is also connected with the space in the bottle body through an injection tube, and is used for injecting liquid into the bottle and sealing the bottle.
2. The BOD5 assay auto-dosing device of claim 1, wherein: in the three-axis linkage mechanism, a Y-direction moving device adopts a lead screw nut pair and comprises a Y-direction stepping motor, a Y-direction lead screw and a Y-direction guide rail which are arranged on the side surface of a workbench, wherein the Y-direction stepping motor is connected with and drives the Y-direction lead screw; and a nut for a Y-direction screw rod is fixed at the lower end of the portal frame, is sleeved on the Y-direction screw rod and drives the portal frame to move back and forth, and meanwhile, the lower end of the portal frame is sleeved on the Y-direction guide rail and slides back and forth along the Y-direction guide rail.
3. The BOD5 assay auto-dosing device of claim 1, wherein: in the three-axis linkage mechanism, an X-direction moving device adopts a lead screw nut pair and comprises an X-direction stepping motor, an X-direction lead screw and an X-direction guide rail which are arranged on a portal frame, wherein the X-direction stepping motor is connected with and drives the X-direction lead screw; the injection mechanism fixing seat is fixed with a nut for an X-direction lead screw, the nut is sleeved on the X-direction lead screw and drives the injection mechanism fixing seat to move left and right, and meanwhile, the injection mechanism fixing seat is sleeved on the X-direction guide rail and slides left and right along the X-direction guide rail.
4. The BOD5 assay auto-dosing device of claim 1, wherein: the automatic injection mechanism comprises three reagent bottles, wherein reagent pumps are arranged in the reagent bottles and connected with reagent injection catheters, and the tail ends of the reagent injection catheters are connected with reagent injection heads; the reagent bottle is arranged in a groove on a fixing plate of the injection mechanism, and the reagent injection catheter and the reagent injection head are respectively inserted into a limiting hole on a fixing seat of the injection mechanism.
5. The BOD5 assay auto-dosing device of claim 4, wherein: in the three-axis linkage mechanism, a Z-direction moving device adopts an electromagnet which is fixedly arranged on a fixed seat of an injection mechanism, a reagent injection head is fixedly connected with a permanent magnet through an injection moving plate, the permanent magnet is positioned below the electromagnet, the electromagnet and the permanent magnet are attracted or separated, so that the permanent magnet is driven to lift, and the permanent magnet drives the reagent injection head to lift;
the injection moving plate is screwed into the guide shaft through threads, and the smooth lower end of the guide shaft is positioned and guided in the guide hole of the injection mechanism fixing seat.
6. The BOD5 assay auto-dosing device of claim 4, wherein: stirring the liquid in the water sample reagent bottle by using an electromagnetic stirrer, wherein an electromagnetic stirring seat is fixed in a groove of a workbench, the water sample reagent bottle is placed in the groove of the workbench and positioned on the electromagnetic stirring seat, an electromagnetic stirring rod is placed in the water sample reagent bottle, and the electromagnetic stirring seat controls the electromagnetic stirring rod to move to stir the liquid in the bottle; the grooves of the workbench are arranged in rows and columns, and each groove can be used for placing a water sample reagent bottle for coordinate positioning by a three-axis linkage mechanism; the worktable is provided with a plurality of lugs so as to move the BOD5 measuring automatic medicine feeding device.
7. The BOD5 assay auto-dosing device of claim 6, wherein: the device comprises a control system, wherein the control system adopts a single chip microcomputer or a PLC controller, and is connected with and controls a three-shaft linkage mechanism, a reagent pump and an electromagnetic stirring seat.
8. The BOD5 assay auto-dosing device of claim 1, wherein: in the bottle plug of the water sample reagent bottle, the overflow one-way valve comprises an overflow one-way valve core, an overflow one-way valve spring and an overflow one-way valve plug which are sequentially contacted; the overflow check valve plug is fixed on the bottle plug, an overflow port communicated with the overflow valve cavity is arranged on the side surface of the bottle plug, the lower part of the bottle plug is connected with the overflow pipe, the overflow check valve core is used for plugging the overflow port at the upper end of the overflow pipe, the position of the overflow port is higher than the overflow check valve sealing port, and the lower end of the overflow pipe is positioned in the bottle body;
the injection check valve comprises an injection check valve core, an injection check valve spring and an injection tube, wherein the injection check valve core, the injection check valve spring and the injection tube are sequentially contacted, the upper end of the injection tube is fixed in an injection check valve cavity of the bottle plug, the lower end of the injection check valve core is positioned in the bottle body, the upper end of the injection check valve core is slidably positioned in the injection port, the lower end of the injection check valve core is positioned in the injection check valve cavity, the lower end of the injection check valve core is used for plugging the injection port, a gap is formed between the middle upper part of the injection check valve core.
9. The BOD5 assay auto-dosing device of claim 8, wherein: in the water sample reagent bottle, a bottle plug cover is arranged on a bottle plug and comprises a permanent magnet, the permanent magnet is detachably arranged at the upper end of the bottle plug, and the bottle plug cover can control the opening of an overflow one-way valve and an injection one-way valve; the overflow one-way valve plug and the overflow one-way valve core are made of magnetic materials and can be adsorbed by a magnet; the injection one-way valve core is a permanent magnet, and the magnetic pole at the upper end of the injection one-way valve core is the same as the magnetic pole at the bottom of the bottle stopper cover and is mutually exclusive.
10. The BOD5 assay auto-dosing device of claim 9, wherein:
in the water sample reagent bottle, the rubber sleeve is sleeved outside the permanent magnet of the bottle plug cover, the bottle plug cover is tightly and firmly sleeved on the upper part of the bottle plug through the rubber sleeve, an exhaust hole is formed between the bottle plug cover and the rubber sleeve and is communicated with the injection port so as to exhaust air in the bottle, and the diameter of the exhaust hole is smaller than that of the injection port; the outer side of the permanent magnet is provided with a circle of bulges, the inner side of the rubber sleeve is provided with a circle of grooves, and the grooves are sleeved on the bulges so that the permanent magnet is firmly combined with the rubber sleeve;
in the bottle stopper, the lower end of the injection tube is higher than the lower end of the overflow tube by a certain height, so that liquid which is just injected is prevented from overflowing;
the length D1 of the injection tube penetrating into the liquid is 2-3cm, and the distance D2 between the mouth of the overflow tube and the bottom of the bottle is 3-5cm, so that the stirring function is not affected when an electromagnetic stirring rod is placed in the bottle;
the injection port is positioned on the central line of the bottle stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920782922.0U CN210166357U (en) | 2019-05-28 | 2019-05-28 | BOD5 survey automatic reagent feeding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920782922.0U CN210166357U (en) | 2019-05-28 | 2019-05-28 | BOD5 survey automatic reagent feeding device |
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| CN210166357U true CN210166357U (en) | 2020-03-20 |
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| CN201920782922.0U Expired - Fee Related CN210166357U (en) | 2019-05-28 | 2019-05-28 | BOD5 survey automatic reagent feeding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057969A (en) * | 2019-05-28 | 2019-07-26 | 菏泽学院 | A kind of BOD5Measure automatic medicine adding apparatus |
| CN112320357A (en) * | 2020-10-09 | 2021-02-05 | 建德市帝华饰品有限公司 | Gantry type glass drop detection device |
-
2019
- 2019-05-28 CN CN201920782922.0U patent/CN210166357U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057969A (en) * | 2019-05-28 | 2019-07-26 | 菏泽学院 | A kind of BOD5Measure automatic medicine adding apparatus |
| CN110057969B (en) * | 2019-05-28 | 2023-12-22 | 菏泽学院 | BOD (BOD) 5 Automatic dosing device for measurement |
| CN112320357A (en) * | 2020-10-09 | 2021-02-05 | 建德市帝华饰品有限公司 | Gantry type glass drop detection device |
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