CN209927769U - Self-stirring system of dissolved oxygen tester - Google Patents
Self-stirring system of dissolved oxygen tester Download PDFInfo
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- CN209927769U CN209927769U CN201920427894.0U CN201920427894U CN209927769U CN 209927769 U CN209927769 U CN 209927769U CN 201920427894 U CN201920427894 U CN 201920427894U CN 209927769 U CN209927769 U CN 209927769U
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Abstract
The utility model relates to a dissolved oxygen apparatus from mixing system, it includes dissolved oxygen apparatus body, dissolved oxygen apparatus body electric connection has the survey probe, and the outside threaded connection of survey probe has the installation head, and the inside of survey probe is provided with the oxygen permeation film, is provided with in the installation head with pass through the subassembly that strikes off that the oxygen permeation film laminated mutually, still be provided with in the installation head with strike off the drive assembly that the subassembly linked mutually, still be provided with in the installation head with drive assembly assorted increase a class subassembly. The utility model provides a drive assembly can drive and strike off the impurity clean up of adhesion on the subassembly will pass through oxygen film, makes the oxygen film of passing through contact with the dissolved oxygen that detects aquatic, makes the more accuracy of testing result, has the high accuracy and measures the aquatic dissolved oxygen content, reduces the effect of dissolved oxygen survey error.
Description
Technical Field
The utility model relates to a water quality monitoring equipment's technical field, in particular to dissolved oxygen apparatus from mixing system.
Background
Dissolved oxygen detection is a very important index for water quality detection. Typical applications include water environment monitoring, industrial production, fishery, wastewater and sewage discharge control, laboratory Biological Oxygen Demand (BOD) detection, and the like. In the prior art, the measurement of dissolved oxygen mainly adopts an iodometry method and a membrane electrode method.
Iodometry is mainly used for laboratory measurements. Manganese sulfate and alkaline potassium iodide are added into a water sample, and oxygen dissolved in the water oxidizes low-valence manganese into high-valence manganese to generate brown precipitate of tetravalent manganese hydroxide. Upon addition of acid, the hydroxide precipitate dissolves and reacts with iodide ions to release free iodine. And (3) taking starch as an indicator, titrating the released iodine by using a sodium thiosulfate standard solution, and calculating the dissolved oxygen content according to the consumption of the titrated solution. The iodometry method needs a sodium thiosulfate standard solution and equipment for titration experiment, has higher requirement on the operation accuracy of operators, and is not suitable for practical popularization except in laboratories.
The membrane electrode method is mainly used for actually detecting the concentration of dissolved oxygen in water. The working principle is that oxygen permeates through a diaphragm and is reduced by a working electrode to generate diffusion current which is in direct proportion to the oxygen concentration, and the concentration of the dissolved oxygen in the water is obtained by measuring the diffusion current. According to the difference of measurable concentration, the membrane electrode method for measuring dissolved oxygen is divided into a galvanic cell type and a polarographic type. The galvanic cell uses silver as the anode and lead as the cathode. The anode and silver electrodes were immersed in a potassium hydroxide cell to form two half-cells, the outer layers also being sealed with a film. The dissolved oxygen is reduced at the anode to generate a diffusion current, and the concentration of the dissolved oxygen can be obtained by measuring the diffusion current.
Polarographic membrane electrode is prepared by polarographic (polarographic): in the electrode, a gold (Au) ring or a platinum (Pt) gold ring is used as a cathode; silver-silver chloride (or mercury-mercurous chloride) is used as the anode. The electrolyte is potassium chloride solution. The outer surface of the cathode is covered with an oxygen permeable film. The film can be made of air-permeable materials such as polytetrafluoroethylene, polyvinyl chloride, polyethylene, silicon rubber and the like. A polarization voltage of 0.5-0.8V is applied between the cathode and the anode. When the dissolved oxygen penetrates through the film and reaches the surface of the gold cathode, the film blocks the liquid communication between the inside and the outside of the electrode, so that the dissolved oxygen in water permeates into the inside of the electrode, and the concentration of the dissolved oxygen can be known by measuring diffusion current through an external circuit.
In the polarographic dissolved oxygen instrument in the prior art, due to the interference of factors such as the permeability of a membrane, the reaction rate of oxygen, SO2, Cl2, Br2, I2, water vapor, algae and the like, the measured result of the dissolved oxygen (Do) in water is small, and accurate dissolved oxygen data cannot be obtained. If the dissolved oxygen meter is continuously monitored on line for a long time, pollutants in water can be attached to the surface of the film to block the film, even microorganisms in water can be attached to the surface of the film to form a layer of biological film, the dissolved oxygen measurement is seriously interfered, and finally the dissolved oxygen meter loses the effect.
SUMMERY OF THE UTILITY MODEL
The utility model provides a dissolved oxygen apparatus from mixing system, it has the high accuracy and measures the aquatic dissolved oxygen content, reduces the advantage of dissolved oxygen survey error.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a dissolved oxygen apparatus from mixing system, includes dissolved oxygen apparatus body, dissolved oxygen apparatus body electric connection has the survey probe, the inside of survey probe is provided with the oxygen permeation film, the outside of survey probe is provided with the installation head, the installation head is the setting of cavity form, the inside at the installation head is pegged graft to the survey probe, be provided with in the installation head with pass through the scraping component that the oxygen film laminated mutually, still be provided with in the installation head and strike off the drive assembly that the component linked mutually, strike off the component and include the head rod with the drive assembly linkage, with head rod fixed connection's rubber slab, with the sponge brush head of rubber slab upper end fixed connection, the sponge brush head is laminated mutually with the lower terminal surface of oxygen permeation film.
Through adopting above-mentioned technical scheme, start dissolved oxygen apparatus, and place the survey probe and wait the aquatic of examining, open actuating mechanism when detecting quality of water, actuating mechanism drives the head rod and rotates, the head rod drives rubber slab and sponge brush head and rotates, because certain deformation can take place for rubber slab and sponge brush head homoenergetic, consequently the sponge brush head can laminate mutually with oxygen permeable film, can be with the adhesion in the surperficial impurity clean up of oxygen permeable film when the sponge brush head rotates, thereby can reduce the influence of aquatic impurity, make the oxygen molecule in aquatic contact with oxygen permeable film abundant, it is also less to the result influence of detection, make the more accurate of result that detects.
The utility model discloses further set up to: the driving component comprises a motor fixedly connected with the inner wall of the mounting head, a first gear linked with the output shaft of the motor and a second gear meshed with the first gear, and the first connecting rod is fixedly connected with the second gear.
Through adopting above-mentioned technical scheme, starter motor, motor drive first gear revolve, and first gear engagement second gear revolve, can drive the head in second gear revolve round, thereby can drive sponge brush head in the pivoted and rotate and scrape the clearance of permeating oxygen film.
The utility model discloses further set up to: the flow increasing assembly is arranged in the mounting head and comprises a flow increasing pipeline fixedly inserted in the mounting head, a rubber abutting ball communicated with the flow increasing pipeline and a cam linked with the motor, the cam is abutted and matched with the rubber abutting ball, and the flow increasing pipeline extends to the outer side of the mounting head.
Through adopting above-mentioned technical scheme, the motor drives the cam and rotates when the operation is rotated, the cam rotates and supports and moves rubber and support the ball, rubber supports and moves the ball and receives the extrusion, rubber supports and moves the inside water of ball and the air is extruded, when the cam supports the ball separation with rubber, rubber supports and moves the ball and restores the prototype in the twinkling of an eye and produces siphonage, thereby in the inner chamber that supports the ball with water inspiration rubber, can drive near the water of oxygen permeation film and flow when the cam supports repeatedly, thereby guarantee the abundant diffusion of dissolved oxygen of aquatic to near oxygen permeation film, survey probe abundant and the dissolved oxygen contact of aquatic when continuous survey, thereby reduce the error.
The utility model discloses further set up to: the lower end of the mounting head is fixedly connected with a filter screen plate.
Through adopting above-mentioned technical scheme, the setting of filtering the otter board can filter the bold impurity in aquatic, prevents that bold impurity laminating from permeating oxygen the surface of membrane when carrying out the survey, guarantees to make the more accuracy of result that detects when detecting.
The utility model discloses further set up to: the lower extreme fixedly connected with second connecting rod of second gear, the first magnet of lower extreme fixedly connected with of second connecting rod, the lower extreme of installation head is rotated and is connected with the pole of moving that supports, it sets up the below at the second connecting rod to support the pole, the upper end fixedly connected with second magnet that supports the pole, second magnet and first magnet inter attraction, it sets up in the below of filtering screen plate and with filtering screen plate parallel arrangement to support the pole.
Through adopting above-mentioned technical scheme, when second gear revolve, the second connecting rod can rotate with second gear is synchronous, and the second connecting rod drives first magnet synchronous rotation, and first magnet acts on second magnet, makes second magnet drive to push away the pole and rotate, can strike off the alga of filter plate below clean when pushing away the pole pivoted, makes that detect hydroenergy enough abundant and oxygen permeation film contact to can make the more accuracy of result that detects.
The utility model discloses further set up to: the upper end fixedly connected with elasticity scraper blade of pole is moved in the promotion, elasticity scraper blade and filter screen board laminating mutually.
Through adopting above-mentioned technical scheme, the elasticity scraper blade is followed and is moved the pole head and rotate, can scrape the clearance with the impurity of laminating on filtering net board when rotating, thereby makes the enough abundant flowing of measuring hydroenergy and contact with oxygen permeation film, makes the more accurate of result that detects.
The utility model discloses further set up to: the mounting head and the measuring probe are detachably connected through threads.
Through adopting above-mentioned technical scheme, threaded connection's setting can make things convenient for installation head and test probe's installation and dismantlement, will install the head dress in the outside of test probe when needs filter to strike off, makes more accurate that detects, will install head and test probe phase separation when needing to change the oxygen permeation film bag, and is simple convenient.
The utility model discloses further set up to: and a water retaining partition plate is arranged on the outer side of the motor.
Through adopting above-mentioned technical scheme, the manger plate baffle can play certain guard action to the motor, can guarantee the good performance of motor when the motor operation, makes the life of motor can obtain the extension.
To sum up, the utility model discloses a beneficial technological effect does:
1. the scraping assembly can clean impurities adhered to the surface of the oxygen permeable film, so that the influence of the impurities in water can be reduced, oxygen molecules in the water can be fully contacted with the oxygen permeable film, the influence on a detection result is small, and the detection result is more accurate;
2. the flow increasing assembly can drive water near the oxygen permeable film to flow, so that dissolved oxygen in the water is fully diffused to the vicinity of the oxygen permeable film, and a measuring probe is fully contacted with the dissolved oxygen in the water during continuous measurement, so that errors are reduced;
3. the second connecting rod with support to move the pole and can drive the elasticity scraper blade and strike off the impurity on filtering net board to can make the more accurate of result that detects.
Drawings
FIG. 1 is a schematic view showing the overall structure of a dissolved oxygen measuring apparatus;
FIG. 2 is a schematic view showing a detailed structure of the inside of the measurement probe and the mounting head;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 4 is a schematic diagram for embodying the specific structure of the filter screen plate.
In the figure, 1, a dissolved oxygen meter body; 2. a measuring probe; 3. an oxygen permeable film; 4. a mounting head; 5. a scraping assembly; 51. a first connecting rod; 52. a rubber plate; 53. a sponge brush head; 6. a drive assembly; 61. a motor; 62. a first gear; 63. a second gear; 7. a flow increasing assembly; 71. a flow increasing pipeline; 72. a rubber supporting ball; 73. a cam; 8. a filter screen plate; 9. a second connecting rod; 91. a first magnet; 10. pushing the rod; 101. a second magnet; 11. an elastic scraper; 12. a water baffle plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b): a self-stirring system of a dissolved oxygen tester is disclosed, as shown in figure 1, comprising a dissolved oxygen tester body 1, wherein the dissolved oxygen tester body 1 is electrically connected with a measuring probe 2, the outer side of the measuring probe 2 is connected with an installing head 4 in a threaded manner, the installing head 4 is arranged in a hollow manner, the measuring probe 2 is inserted into the installing head 4, and when the dissolved oxygen tester body 1 is opened, the measuring probe 2 is contacted with detected water, so that the content of dissolved oxygen in water can be detected.
As shown in fig. 2, the inside of the measuring probe 2 is provided with an oxygen permeable film 3, the mounting head 4 is provided with a scraping component 5 attached to the oxygen permeable film 3, the mounting head 4 is further provided with a driving component 6 linked with the scraping component 5, the mounting head 4 is further provided with a flow increasing component 7 matched with the driving component 6, the driving component 6 can drive the scraping component 5 to clean impurities adhered to the oxygen permeable film 3, so that the oxygen permeable film 3 can be contacted with dissolved oxygen in the detection water, and the detection result is more accurate.
As shown in fig. 3, the driving assembly 6 includes a motor 61 fixedly connected to the inner wall of the mounting head 4, a first gear 62 linked with the output shaft of the motor 61, a second gear 63 engaged with the first gear 62, a water-retaining partition 12 is provided on the outer side of the motor 61, the water-retaining partition 12 can play a certain protection role on the motor 61, thereby enabling the motor 61 to operate more stably, a storage battery can be disposed in the mounting head 4, the storage battery provides power for the motor 61, the first gear 62 is a pinion, the second gear 63 is a ring gear, the first gear 62 is a diameter arm, the motor 61 is started, and the motor 61 drives the first gear 62 to rotate to drive the second gear 63 to rotate.
As shown in fig. 3, scraping component 5 includes the first connecting rod 51 with second gear 63 fixed connection, rubber sheet 52 with first connecting rod 51 fixed connection, sponge brush head 53 with rubber sheet 52 upper end fixed connection, sponge brush head 53 laminates with the lower terminal surface of oxygen permeation film 3, when second gear 63 rotates, second gear 63 drives first connecting rod 51 and rotates, first connecting rod 51 drives rubber sheet 52 and rotates, rubber sheet 52 drives sponge brush head 53 and rotates, sponge brush head 53 laminates with oxygen permeation film 3 mutually, clear up the impurity of oxygen permeation film 3 lower extreme adhesion, make oxygen permeation film 3 and the abundant contact of dissolved oxygen, thereby can carry out accurate detection.
As shown in fig. 3, a flow increasing assembly 7 is arranged in the mounting head 4, the flow increasing assembly 7 includes a flow increasing pipe 71 fixedly inserted in the mounting head 4, a rubber abutting ball 72 communicated with the flow increasing pipe 71, and a cam 73 linked with the motor 61, the cam 73 is in abutting fit with the rubber abutting ball 72, the flow increasing pipe 71 extends to the outside of the mounting head 4, when the motor 61 operates, the cam 73 rotates, the cam 73 intermittently abuts against the rubber abutting ball 72, so that the rubber abutting ball 72 instantaneously contracts and expands, the rubber abutting ball 72 drives the flow increasing pipe 71 to generate a siphon phenomenon, thereby driving water flow near the mounting head 4 to flow, enabling the water to be detected to be sufficiently contacted with the oxygen permeable membrane 3, and reducing detection errors.
As shown in fig. 4, the lower end of the mounting head 4 is fixedly connected with a filter screen plate 8, and the filter screen plate 8 can intercept and filter large impurities in the detected water, so as to prevent the impurities from being adhered to the oxygen permeable film 3 and ensure the accurate detection of the oxygen permeable film 3.
As shown in fig. 4, a second connecting rod 9 is fixedly connected to the lower end of the second gear 63, a first magnet 91 is fixedly connected to the lower end of the second connecting rod 9, the second gear 63 can drive the second connecting rod 9 and the first magnet 91 to rotate synchronously when rotating, a pushing rod 10 is rotatably connected to the lower end of the mounting head 4, the pushing rod 10 is disposed below the second connecting rod 9, a second magnet 101 is fixedly connected to the upper end of the pushing rod 10, the second magnet 101 and the first magnet 91 attract each other, under the action of the first magnet 91, the second magnet 101 drives the pushing rod 10 to rotate synchronously, the pushing rod 10 is disposed below the filter screen plate 8 and parallel to the filter screen plate 8, an elastic scraper 11 is fixedly connected to the upper end of the pushing rod 10, the elastic scraper 11 is attached to the filter screen plate 8, and the elastic scraper 11 can be driven to rotate when the pushing rod 10 rotates, the elastic scraper blade 11 rotates and acts on the filter screen plate 8, so that impurities at the lower end of the filter screen plate 8 can be cleaned up by the elastic scraper blade 11, the detection water can contact with the oxygen permeation film 3 through the filter screen plate 8, and the detection result can be more accurate.
The specific working process is as follows: starter motor 61, motor 61 operation drives strikes off subassembly 5 and increases a class subassembly 7 operation, strike off subassembly 5 and can drive sponge brush head 53, sponge brush head 53 acts on oxygen permeation film 3, sponge brush head 53 can be with the impurity clean up of oxygen permeation film 3 lower extreme, thereby can make oxygen permeation film 3 can with the abundant contact of dissolved oxygen, increase class subassembly 7 simultaneously and can drive the rivers flow near 2 survey probes, thereby make the abundant diffusion of dissolved oxygen in aquatic pass oxygen film 3 near, reduce the error that detects.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a dissolved oxygen apparatus from mixing system, includes dissolved oxygen apparatus body (1), dissolved oxygen apparatus body (1) electric connection has survey probe (2), its characterized in that: the oxygen permeation film (3) is arranged in the measuring probe (2), the mounting head (4) is arranged on the outer side of the measuring probe (2), the mounting head (4) is arranged in a hollow shape, the measuring probe (2) is inserted into the mounting head (4), the mounting head (4) is internally provided with a scraping component (5) which is attached to the oxygen permeation film (3), the mounting head (4) is internally provided with a driving component (6) which is linked with the scraping component (5), the scraping component (5) comprises a first connecting rod (51) which is linked with the driving component (6), a rubber plate (52) which is fixedly connected with the first connecting rod (51) and a sponge brush head (53) which is fixedly connected with the upper end of the rubber plate (52), and the sponge brush head (53) is attached to the lower end face of the oxygen permeation film (3).
2. The self-stirring system of the dissolved oxygen meter according to claim 1, characterized in that: the driving component (6) comprises a motor (61) fixedly connected with the inner wall of the mounting head (4), a first gear (62) linked with an output shaft of the motor (61), and a second gear (63) meshed with the first gear (62), and the first connecting rod (51) is fixedly connected with the second gear (63).
3. The self-stirring system of the dissolved oxygen meter according to claim 2, characterized in that: the flow increasing assembly (7) is arranged in the mounting head (4), the flow increasing assembly (7) comprises a flow increasing pipeline (71) fixedly inserted in the mounting head (4), a rubber abutting ball (72) communicated with the flow increasing pipeline (71), and a cam (73) linked with the motor (61), the cam (73) is abutted and matched with the rubber abutting ball (72), and the flow increasing pipeline (71) extends to the outer side of the mounting head (4).
4. The self-stirring system of the dissolved oxygen meter according to claim 2, characterized in that: the lower end of the mounting head (4) is fixedly connected with a filter screen plate (8).
5. The self-stirring system of the dissolved oxygen meter according to claim 4, wherein: the lower extreme fixedly connected with second connecting rod (9) of second gear (63), the first magnet (91) of lower extreme fixedly connected with of second connecting rod (9), the lower extreme of installation head (4) is rotated and is connected with to move pole (10), it sets up in the below of second connecting rod (9) to move pole (10) to move, the upper end fixedly connected with second magnet (101) of pole (10) are moved in the support, second magnet (101) and first magnet (91) inter attraction, move pole (10) to set up in the below of filter screen board (8) and with filter screen board (8) parallel arrangement.
6. The self-stirring system of the dissolved oxygen meter of claim 5, wherein: the upper end of the pushing rod (10) is fixedly connected with an elastic scraper (11), and the elastic scraper (11) is attached to the filter screen plate (8).
7. The self-stirring system of the dissolved oxygen meter according to claim 1, characterized in that: the mounting head (4) and the measuring probe (2) are in threaded detachable connection.
8. The self-stirring system of the dissolved oxygen meter according to claim 2, characterized in that: and a water retaining partition plate (12) is arranged on the outer side of the motor (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427894.0U CN209927769U (en) | 2019-03-30 | 2019-03-30 | Self-stirring system of dissolved oxygen tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427894.0U CN209927769U (en) | 2019-03-30 | 2019-03-30 | Self-stirring system of dissolved oxygen tester |
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| CN209927769U true CN209927769U (en) | 2020-01-10 |
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| CN201920427894.0U Active CN209927769U (en) | 2019-03-30 | 2019-03-30 | Self-stirring system of dissolved oxygen tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155273A (en) * | 2022-08-08 | 2022-10-11 | 东营职业学院 | Integrated food-grade and industrial-grade carbon dioxide recovery device and recovery process |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155273A (en) * | 2022-08-08 | 2022-10-11 | 东营职业学院 | Integrated food-grade and industrial-grade carbon dioxide recovery device and recovery process |
| CN115155273B (en) * | 2022-08-08 | 2023-08-22 | 东营职业学院 | Integrated food-grade and industrial-grade carbon dioxide recovery device and recovery process |
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