CN109211781B - On-line measuring device for ion concentration - Google Patents
On-line measuring device for ion concentration Download PDFInfo
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- CN109211781B CN109211781B CN201710517868.2A CN201710517868A CN109211781B CN 109211781 B CN109211781 B CN 109211781B CN 201710517868 A CN201710517868 A CN 201710517868A CN 109211781 B CN109211781 B CN 109211781B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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Abstract
The invention relates to an on-line measuring device for ion concentration, which comprises a shell and a colorimetric bottle, wherein the shell is provided with a display screen, a protection mechanism, two first fixing units and a plurality of second fixing units, the protection mechanism comprises a protection plate and two protection components, the protection components comprise a rotating unit and a transmission unit, the colorimetric bottle comprises a bottle body, two first side plates and a plurality of second side plates, the second fixing units comprise a fixing frame and two telescopic components, the first fixing units comprise a notch, a top plate, a bottom plate and a connecting component, the position of the colorimetric bottle is fixed by the first fixing units and the second fixing units, the colorimetric bottle is prevented from shaking and falling in the test process, the test is influenced, in addition, the protection mechanism is convenient for a user to clearly observe the reading on the display screen, and the protection plate is pulled to rotate downwards when the use is finished, the display screen is prevented from being scratched, and an effective protection effect is achieved.
Description
Technical Field
The invention relates to the field of sampling equipment, in particular to an online measuring device for ion concentration.
Background
In people's life and work, need detect various ion concentration in the liquid usually, convenient control ion concentration, when using these measuring device, in pouring the color comparison bottle into with the liquid that awaits measuring usually, then place the color comparison bottle on equipment, inside equipment, there are a laser sensor and a receiving sensor usually, utilize receiving sensor to detect laser attenuation degree to judge ion concentration.
Although these ion concentration measuring device can detect out the ion concentration of the liquid of awaiting measuring, but in the use, because the position of color comparison bottle is unset, lead to the color comparison bottle to take place easily and rock, influence the equipment and detect, simultaneously when people take up measuring device, the color comparison bottle drops from the device easily, take place cracked, moreover, some measuring device often use in the open air, when outdoor light is stronger, the user is difficult to observe the registration from the display screen, and simultaneously, the display screen on the device is direct to be exposed outside at equipment usually, make the display screen by some sharp-pointed article fish tails easily like this, lead to equipment to damage.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, an online measuring device for ion concentration is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: an online measuring device for ion concentration comprises a shell and a colorimetric bottle, wherein the shell is provided with a switch, an Ethernet interface, a loudspeaker, a display screen, a protection mechanism, a socket, two first fixing units, a plurality of second fixing units and a plurality of control keys;
the protection mechanism comprises a protection plate and two protection assemblies, the two protection assemblies are arranged on two sides of the protection plate, each protection assembly comprises a rotating unit and a transmission unit, the rotating unit is arranged above the protection unit, the rotating unit comprises a first fixing ring and a side rod, the side rod is fixed on the protection plate, and the first fixing ring is fixed on the protection plate and sleeved on the side rod;
the transmission unit comprises a hinge block, a hinge rod, a sliding ring and a fixed rod, the hinge block is fixed on the protection plate and is hinged with the sliding ring through the hinge rod, the sliding ring is sleeved on the fixed rod, the fixed rod is U-shaped, and two ends of the fixed rod are fixed on the shell;
the colorimetric bottle comprises a bottle body, two first side plates and a plurality of second side plates, wherein the two first side plates are arranged on two sides of the bottle body, the number of the first side plates is equal to that of the first fixing units and corresponds to that of the first fixing units one by one, the second side plates are uniformly arranged on the outer side of the bottle body in the circumferential direction, the number of the second side plates is equal to that of the second fixing units and corresponds to that of the second fixing units one by one, the second side plates are provided with fixing plates, and the bottle body is arranged in a socket;
the second fixing units are uniformly distributed on the periphery of the socket in the circumferential direction and comprise a fixing frame and two telescopic assemblies, the fixing frame is U-shaped, and two ends of the fixing frame are respectively connected with the two telescopic assemblies;
two first fixed unit sets up the both sides at the socket respectively, first fixed unit includes the notch, sets up roof, bottom plate and coupling assembling of setting in the notch below above the notch, the notch sets up on the shell, roof and bottom plate are all fixed on the shell, coupling assembling sets up between roof and bottom plate, the roof passes through coupling assembling and is connected with the bottom plate.
Preferably, in order to pull the fixed frame, the position of the bottle body is fixed through the fixed plate, the telescopic assembly comprises a first lantern ring, a second lantern ring, an I-shaped block, a sliding rod, a spring and a fixed block, the first lantern ring is fixed on the fixed frame, the first lantern ring and the second lantern ring are both sleeved at the middle end of the I-shaped block, one end of the sliding rod is fixed on the second lantern ring, the other end of the sliding rod is connected with the fixed block through the spring, and the fixed block is fixed on the shell.
Preferably, in order to fix the moving direction of the sliding rod, the telescopic assembly comprises a limiting ring, and the limiting ring is fixed on the shell and sleeved on the sliding rod.
Preferably, the spring is in a stretched state in order to enhance the fixing effect of the bottle body.
Preferably, in order to fix the fixing plate by the fixing frame, a notch is formed in the fixing frame, and the notch is matched with the fixing plate.
As preferred, in order to prevent that the color comparison bottle from dropping from the shell, coupling assembling includes a plurality of linkage elements, linkage element includes the solid fixed ring of inserted bar and two seconds, the top of inserted bar is fixed on the roof, two the solid fixed ring of second sets up respectively in the upper and lower both sides of notch and the cover is established on the inserted bar.
Preferably, in order to prevent the insertion rod from falling off the second fixing ring, the connection unit further includes a magnet disposed in the bottom plate, and the insertion rod is an iron rod.
Preferably, in order to fix the angle of the protection plate, the transmission unit further comprises a screw, one side, away from the protection plate, of the sliding ring is sleeved on the screw, internal threads are arranged in the sliding ring, external threads are arranged on the periphery of the screw, and the external threads on the screw are matched with the internal threads in the sliding ring.
Preferably, the shield is black in color in order to enhance the light absorption of the shield to facilitate reading of the display on the display screen by the user.
Preferably, in order to ensure the display brightness of the display screen and facilitate the user to read data, the display screen is an LED display screen.
When using this ion concentration measuring device, in the body of colorimetric bottle will be poured into to the liquid of waiting to examine, insert the socket of shell with the body simultaneously, when inserting, aim at the first fixed unit's of first curb plate of body both sides notch, then, insert the second fixed ring with each inserted bar of roof below correspondingly, make the body can't drop from the shell, afterwards, fixed frame in the fixed unit of pulling second, make the breach on the fixed frame aim at the fixed plate that corresponds on the second curb plate, loosen fixed frame, make extension spring pulling fixed frame remove to the fixed plate, thereby realize fixing the colorimetric bottle through the position with the fixed plate, prevent that the colorimetric bottle from rocking and the colorimetric bottle drops in the testing process, influence the test. This an online measurement device for ion concentration makes the position of color comparison bottle fixed through first fixed unit and the fixed unit of second, prevents that the color comparison bottle from rocking and dropping among the test procedure, influences the test.
In order to facilitate observation of the reading on the display screen, the display screen is protected at the same time, and the display screen is protected through a protection mechanism. When observing the registration, rotate the screw rod, make the sliding ring upwards slide on the dead lever, promote the guard plate through the hinge bar and upwards rotate, then the antiport screw rod, make the position of sliding ring fixed, the guard plate can block strong outdoor light like this, the reading on the display screen can be observed clearly in the open air to the user of being convenient for, after the equipment finishes using, not hard up screw rod makes the sliding ring remove downwards, the guard plate blocks the display screen, prevent that the display screen from being by outside sharp-pointed object fish tail, thereby effectual guard action has been played. This an on-line measuring device for ion concentration passes through the reading on the protection machanism convenience of customers clearly observes the display screen, and when finishing using, the pulling guard plate is rotated downwards, prevents that the display screen from being by the fish tail, has played effectual guard action.
The online measuring device for the ion concentration has the advantages that the position of the colorimetric bottle is fixed through the first fixing unit and the second fixing unit, the colorimetric bottle is prevented from shaking and falling off in the test process, the test is prevented from being influenced, a user can conveniently and clearly observe the reading on the display screen through the protection mechanism, the protection plate is pulled to rotate downwards when the online measuring device is used, the display screen is prevented from being scratched, and an effective protection effect is achieved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of an on-line measuring apparatus for ion concentration according to the present invention;
FIG. 2 is a top view of the guard mechanism of the present invention for an on-line measurement device of ion concentration;
FIG. 3 is a schematic diagram of the construction of a cuvette for use in an on-line measurement device for ion concentration according to the present invention;
FIG. 4 is a schematic structural diagram of a second fixing unit of the on-line measuring apparatus for ion concentration according to the present invention;
FIG. 5 is a schematic structural diagram of a first fixing unit of the on-line measuring apparatus for ion concentration according to the present invention;
in the figure: 1. the portable electronic device comprises a shell, 2. a switch, 3. an Ethernet interface, 4. a loudspeaker, 5. a control key, 6. a display screen, 7. a protection mechanism, 8. a socket, 9. a first fixing unit, 10. a colorimetric bottle, 11. a second fixing unit, 12. a protection plate, 13. a first fixing ring, 14. a side rod, 15. a hinge block, 16. a hinge rod, 17. an inserting rod, 18. a magnet, 19. a sliding ring, 20. a fixing rod, 21. a screw rod, 22. a bottle body, 23. a first side plate, 24. a second side plate, 25. a fixing plate, 26. a fixing frame, 27. a first lantern ring, 28. a second lantern ring, 29. an I-shaped block, 30. a sliding rod, 31. a limiting ring, 32. a spring, 33. a fixing block, 34. a notch, 35. a notch, 36. a top plate, 37. a bottom plate and 38. a second fixing.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1 to 5, an online measuring device for ion concentration includes a housing 1 and a colorimetric bottle 10, where the housing 1 is provided with a switch 2, an ethernet interface 3, a speaker 4, a display screen 6, a protection mechanism 7, a socket 8, two first fixing units 9, a plurality of second fixing units 11, and a plurality of control keys 5;
the protection mechanism 7 comprises a protection plate 12 and two protection assemblies, the two protection assemblies are arranged on two sides of the protection plate 12, each protection assembly comprises a rotating unit and a transmission unit, the rotating unit is arranged above the protection unit, the rotating unit comprises a first fixing ring 13 and a side rod 14, the side rod 14 is fixed on the protection plate 12, and the first fixing ring 13 is fixed on the protection plate 12 and sleeved on the side rod 14;
the transmission unit comprises a hinge block 15, a hinge rod 16, a sliding ring 19 and a fixed rod 20, the hinge block 15 is fixed on the protection plate 12 and is hinged with the sliding ring 19 through the hinge rod 16, the sliding ring 19 is sleeved on the fixed rod 20, the fixed rod 20 is U-shaped, and two ends of the fixed rod 20 are fixed on the shell 1;
the colorimetric bottle 10 comprises a bottle body 22, two first side plates 23 and a plurality of second side plates 24, the two first side plates 23 are arranged on two sides of the bottle body 22, the number of the first side plates 23 is equal to that of the first fixing units 9, the first side plates 23 correspond to the first fixing units 9 one by one, the second side plates 24 are uniformly arranged on the outer side of the bottle body 22 in the circumferential direction, the number of the second side plates 24 is equal to that of the second fixing units 11, the second side plates 24 correspond to the second fixing units 11 one by one, fixing plates 25 are arranged on the second side plates 24, and the bottle body 22 is arranged in the socket 8;
the second fixing units 11 are circumferentially and uniformly distributed on the periphery of the socket 8, each second fixing unit 11 comprises a fixing frame 26 and two telescopic assemblies, the fixing frame 26 is U-shaped, and two ends of the fixing frame 26 are respectively connected with the two telescopic assemblies;
two first fixed unit 9 sets up respectively in the both sides of socket 8, first fixed unit 9 includes notch 35, sets up roof 36, bottom plate 37 and the coupling assembling of setting below notch 35 above notch 35, notch 35 sets up on shell 1, roof 36 and bottom plate 37 are all fixed on shell 1, coupling assembling sets up between roof 36 and bottom plate 37, roof 36 is connected with bottom plate 37 through coupling assembling.
Preferably, in order to pull the fixed frame 26 and fix the position of the bottle body 22 by fixing the fixed plate 25, the telescopic assembly comprises a first lantern ring 27, a second lantern ring 28, an I-shaped block 29, a sliding rod 30, a spring 32 and a fixed block 33, the first lantern ring 27 is fixed on the fixed frame 26, the first lantern ring 27 and the second lantern ring 28 are both sleeved on the middle end of the I-shaped block 29, one end of the sliding rod 30 is fixed on the second lantern ring 28, the other end of the sliding rod 30 is connected with the fixed block 33 by the spring 32, and the fixed block 33 is fixed on the housing 1.
Preferably, in order to fix the moving direction of the sliding rod 30, the telescopic assembly includes a limiting ring 31, and the limiting ring 31 is fixed on the housing 1 and sleeved on the sliding rod 30.
Preferably, the spring 32 is under tension to enhance the securing of the body 22.
Preferably, in order to facilitate the fixing frame 26 to fix the fixing plate 25, the fixing frame 26 is provided with a notch 34, and the notch 34 is matched with the fixing plate 25.
Preferably, in order to prevent the colorimetric bottle 10 from falling off from the housing 1, the connecting assembly comprises a plurality of connecting units, each connecting unit comprises an insert rod 17 and two second fixing rings 38, the top end of the insert rod 17 is fixed on the top plate 36, and the second fixing rings 38 are respectively arranged on the upper side and the lower side of the notch 35 and sleeved on the insert rod 17.
Preferably, in order to prevent the insertion rod 17 from falling off the second fixing ring 38, the connection unit further includes a magnet 18, the magnet 18 is disposed in the bottom plate 37, and the insertion rod 17 is an iron rod.
Preferably, in order to fix the angle of the protection plate 12, the transmission unit further comprises a screw 21, one side of the sliding ring 19, which is far away from the protection plate 12, is sleeved on the screw 21, internal threads are formed in the sliding ring 19, external threads are formed on the periphery of the screw 21, and the external threads on the screw 21 are matched with the internal threads in the sliding ring 19.
Preferably, the shield 12 is black in color in order to enhance the light absorption of the shield 12 to facilitate reading of the indicia on the display screen 6 by the user.
Preferably, in order to ensure the display brightness of the display screen 6 and facilitate the user to read data, the display screen 6 is an LED display screen.
When using this ion concentration measuring device, in pouring the body 22 of color comparison bottle 10 with the liquid of awaiting measuring, insert the socket 8 of shell 1 with body 22 simultaneously, when inserting, aim at the notch 35 of first fixed unit 9 with the first curb plate 23 of body 22 both sides, then, insert the solid fixed ring 38 of second correspondingly with each inserted bar 17 of roof 37 below, make body 22 can't drop from shell 1, afterwards, fixed frame 26 among the pulling second fixed unit 11, make breach 34 on the fixed frame 26 aim at the fixed plate 25 on the corresponding second curb plate 24, loosen fixed frame 26, make extension spring 32 pulling fixed frame 26 remove to fixed plate 25, thereby realize fixing color comparison bottle 10 through the position with fixed plate 25, prevent that color comparison bottle 10 from rocking and color comparison bottle 10 drop in the test process, influence the test. This an online measurement device for ion concentration makes the rigidity of color comparison bottle 10 through first fixed unit 9 and the fixed unit 11 of second, prevents that color comparison bottle 10 from rocking and dropping among the test procedure, influences the test.
In order to facilitate observation of the reading on the display screen 6 and protection of the display screen 6, the display screen 6 is protected by the protection mechanism 7. When observing the registration, rotate screw rod 21, make sliding ring 19 upwards slide on dead lever 20, promote guard plate 12 through hinged rod 16 and upwards rotate, then reverse rotation screw rod 21, make sliding ring 19's rigidity, guard plate 12 can block strong outdoor light like this, the reading on display screen 6 can be observed clearly in the open air to the user of being convenient for, after equipment finishes using, not hard up screw rod 21, make sliding ring 19 downstream, guard plate 12 blocks display screen 6, prevent that display screen 6 from being scratched by outside sharp-pointed object, thereby effectual guard action has been played. This an online measurement device for ion concentration passes through 7 convenience of customers of protection machanism and clearly observes the reading on the display screen 6, and when finishing using, pulling guard plate 12 rotates downwards, prevents that display screen 6 from being by the fish tail, has played effectual guard action.
Compared with the prior art, this an online measurement device for ion concentration makes the rigidity of color comparison bottle 10 through first fixed unit 9 and the fixed unit 11 of second, prevents that color comparison bottle 10 from rocking and dropping in the test process, influences the test, moreover, through the reading on 7 convenience of customers of protection machanism observe display screen 6 clearly, when finishing using, pulling guard plate 12 rotates downwards, prevents that display screen 6 from being by the fish tail, has played effectual guard action.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The on-line measuring device for the ion concentration is characterized by comprising a shell (1) and a colorimetric bottle (10), wherein a switch (2), an Ethernet interface (3), a loudspeaker (4), a display screen (6), a protection mechanism (7), a socket (8), two first fixing units (9), a plurality of second fixing units (11) and a plurality of control keys (5) are arranged on the shell (1);
the protection mechanism (7) comprises a protection plate (12) and two protection assemblies, the two protection assemblies are arranged on two sides of the protection plate (12), each protection assembly comprises a rotating unit and a transmission unit, the rotating unit is arranged above the protection unit, the rotating unit comprises a first fixing ring (13) and a side lever (14), the side lever (14) is fixed on the protection plate (12), and the first fixing ring (13) is fixed on the protection plate (12) and sleeved on the side lever (14);
the transmission unit comprises a hinge block (15), a hinge rod (16), a sliding ring (19) and a fixed rod (20), the hinge block (15) is fixed on the protection plate (12) and is hinged with the sliding ring (19) through the hinge rod (16), the sliding ring (19) is sleeved on the fixed rod (20), the fixed rod (20) is U-shaped, and two ends of the fixed rod (20) are fixed on the shell (1);
the colorimetric bottle (10) comprises a bottle body (22), two first side plates (23) and a plurality of second side plates (24), wherein the two first side plates (23) are arranged on two sides of the bottle body (22), the number of the first side plates (23) is equal to that of the first fixing units (9), the first side plates correspond to the first fixing units one by one, the second side plates (24) are circumferentially and uniformly arranged on the outer side of the bottle body (22), the number of the second side plates (24) is equal to that of the second fixing units (11), the second side plates (24) correspond to the second fixing units one by one, fixing plates (25) are arranged on the second side plates (24), and the bottle body (22) is arranged in the socket (8);
the second fixing units (11) are circumferentially and uniformly distributed on the periphery of the socket (8), each second fixing unit (11) comprises a fixing frame (26) and two telescopic assemblies, the fixing frame (26) is U-shaped, and two ends of the fixing frame (26) are respectively connected with the two telescopic assemblies;
two first fixed unit (9) set up respectively in the both sides of socket (8), first fixed unit (9) include notch (35), set up roof (36) above notch (35), set up bottom plate (37) and coupling assembling in notch (35) below, notch (35) set up on shell (1), roof (36) and bottom plate (37) are all fixed on shell (1), coupling assembling sets up between roof (36) and bottom plate (37), roof (36) are connected with bottom plate (37) through coupling assembling.
2. The on-line measuring device for the ion concentration according to claim 1, wherein the telescopic assembly comprises a first lantern ring (27), a second lantern ring (28), an I-shaped block (29), a sliding rod (30), a spring (32) and a fixed block (33), the first lantern ring (27) is fixed on the fixed frame (26), the first lantern ring (27) and the second lantern ring (28) are sleeved on the middle end of the I-shaped block (29), one end of the sliding rod (30) is fixed on the second lantern ring (28), the other end of the sliding rod (30) is connected with the fixed block (33) through the spring (32), and the fixed block (33) is fixed on the shell (1).
3. The on-line measuring device for ion concentration according to claim 2, wherein the telescopic assembly comprises a limiting ring (31), and the limiting ring (31) is fixed on the housing (1) and sleeved on the sliding rod (30).
4. The on-line measuring device for ion concentration according to claim 2, characterized in that the spring (32) is in tension.
5. The on-line measuring device for ion concentration according to claim 1, characterized in that the fixing frame (26) is provided with a notch (34), and the notch (34) is matched with the fixing plate (25).
6. The on-line measuring device for ion concentration according to claim 1, wherein the connecting assembly comprises a plurality of connecting units, the connecting units comprise an insert rod (17) and two second fixing rings (38), the top end of the insert rod (17) is fixed on the top plate (36), and the two second fixing rings (38) are respectively arranged at the upper side and the lower side of the notch (35) and sleeved on the insert rod (17).
7. The on-line measuring device for ion concentration according to claim 6, wherein the connection unit further comprises a magnet (18), the magnet (18) is disposed in a bottom plate (37), and the insertion rod (17) is an iron rod.
8. The on-line measuring device for ion concentration according to claim 1, wherein the transmission unit further comprises a screw (21), one side of the slip ring (19) far away from the protection plate (12) is sleeved on the screw (21), an internal thread is arranged in the slip ring (19), an external thread is arranged on the periphery of the screw (21), and the external thread on the screw (21) is matched with the internal thread in the slip ring (19).
9. The on-line measuring device for ion concentration according to claim 1, wherein the shielding plate (12) is black in color.
10. The on-line measuring device for ion concentration according to claim 1, characterized in that the display screen (6) is an LED display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517868.2A CN109211781B (en) | 2017-06-29 | 2017-06-29 | On-line measuring device for ion concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517868.2A CN109211781B (en) | 2017-06-29 | 2017-06-29 | On-line measuring device for ion concentration |
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| Publication Number | Publication Date |
|---|---|
| CN109211781A CN109211781A (en) | 2019-01-15 |
| CN109211781B true CN109211781B (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517868.2A Active CN109211781B (en) | 2017-06-29 | 2017-06-29 | On-line measuring device for ion concentration |
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| CN203630034U (en) * | 2013-12-12 | 2014-06-04 | 山东科技大学 | Cuvette stand |
| CN204165892U (en) * | 2014-11-13 | 2015-02-18 | 吕斐 | A kind of vegetable residual pesticide detector cuvette stationary installation |
| CN205786279U (en) * | 2016-05-27 | 2016-12-07 | 上海科油石油仪器制造有限公司 | A kind of cuvette installs test device |
| CN106594463A (en) * | 2016-11-11 | 2017-04-26 | 严幼仙 | Fixing protecting device of display screen for big data |
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2017
- 2017-06-29 CN CN201710517868.2A patent/CN109211781B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2723986Y (en) * | 2004-08-16 | 2005-09-07 | 长春吉大·小天鹅仪器有限公司 | Quick detector for nitriate and nitrite |
| JP2009139235A (en) * | 2007-12-06 | 2009-06-25 | Shimadzu Corp | Cell fixing device and particle measuring device using it |
| CN203275282U (en) * | 2013-05-31 | 2013-11-06 | 上海天美科学仪器有限公司 | Cuvette bracket |
| CN203630034U (en) * | 2013-12-12 | 2014-06-04 | 山东科技大学 | Cuvette stand |
| CN204165892U (en) * | 2014-11-13 | 2015-02-18 | 吕斐 | A kind of vegetable residual pesticide detector cuvette stationary installation |
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| CN106594463A (en) * | 2016-11-11 | 2017-04-26 | 严幼仙 | Fixing protecting device of display screen for big data |
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| CN109211781A (en) | 2019-01-15 |
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