Permanganate index analyzer with liquid inlet, water bath and titration functions

Abstract

The utility model relates to a permanganate index analyzer with liquid inlet, water bath and titration functions, which comprises an analyzer body, a liquid adding dripper is fixedly mounted on the analyzer body, a liquid adding level is arranged below the liquid adding dripper, a titration dripper is fixedly mounted on the analyzer body, a titration positioning position is arranged below the titration dripper, and the titration dripper is fixedly mounted on the analyzer body. One side of the titration dropper is fixedly connected with a transfer mechanical arm, a water bath box is fixedly mounted in the analyzer body, a limiting disc is fixedly mounted in the water bath box, a placement seat is movably mounted on the limiting disc, and a shaking mechanism is arranged on the limiting disc. According to the utility model, the sample bottle is uniformly heated through the water bath box, the reaction efficiency of a reagent is improved, the reaction efficiency of the reagent is further accelerated through the shaking mechanism, and the index analysis time of permanganate is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental sample analysis, in particular to a permanganate index analyzer with liquid inlet, water bath and titration functions. Background Art

[0002] When monitoring the degree of water pollution, the determination of the permanganate index of water quality is an important measurement indicator; "Determination of the Permanganate Index of Water Quality" (ISO 8467-1986) is the currently recognized standard detection method.

[0003] In order to further understand the fully automatic permanganate index analyzer in the prior art, after searching, the Chinese patent with the announcement number: CN216900238U discloses a fully automatic permanganate index analyzer, including: a main body, on which a sample cup placement station, a liquid adding station, a heating station and a titration station are arranged; a sample cup gripper, which is used to grip the sample cup; a three-axis mechanical arm mechanism, on which the sample cup gripper is installed, and the three-axis mechanical arm mechanism drives the sample cup gripper to move between the sample cup placement station, the liquid adding station, the heating station and the titration station. The sample basket is arranged at the sample cup placement station, and a plurality of holes for placing the sample cup are provided on the sample basket; a heating module is arranged at the heating station, and the heating module is used to heat the sample cup placed at the heating station; a first liquid adding module is used to add detection reagent to the sample cup at the liquid adding station; a titration module includes a second liquid adding module and a titration detection module, the second liquid adding module is used to add titration reagent to the sample cup at the titration station, and the titration detection module is used to detect the sample liquid in the sample cup at the titration station.

[0004] After exploration and analysis, the patent has the following shortcomings in actual use: in this patent, a three-axis robotic arm mechanism is used to realize the automatic transfer of the sample cup during the analysis process, the first liquid adding module is used to realize the automatic addition of the detection reagent, the heating module completes the heating and digestion of the sample, and the titration module realizes automatic titration detection. However, although the reagent is heated by the heating module in this patent, heating alone is not effective in improving the reaction efficiency of the reagent. At the same time, the heating effect is uneven, which is not conducive to the reaction of the reagent and cannot effectively shorten the reaction time of the reagent. Utility Model Content

[0005] Aiming at the technical problems that the existing reagent heating effect is not good and the reaction time is long, the utility model provides a permanganate index analyzer with liquid inlet, water bath and titration functions.

[0006] The technical scheme adopted by the utility model is: a permanganate index analyzer with liquid inlet, water bath and titration functions, comprising an analyzer body, a liquid adding dripper is fixedly installed on the analyzer body, a liquid adding position is arranged below the liquid adding dripper, a titration dripper is fixedly installed on the analyzer body, a dropping position is arranged below the titration dripper, a transfer mechanical arm is fixedly connected to one side of the titration dripper, a water bath is fixedly installed inside the analyzer body, a heating resistance wire is fixedly installed on the inner wall of the water bath, a motor is fixedly installed on the bottom of the water bath, a limiting disk is fixedly installed inside the water bath, a placing seat is movably installed on the limiting disk, a placing slot is opened on the placing seat, a sample cup is placed on the placing slot, a shaking mechanism is arranged on the limiting disk, and the shaking mechanism is used to shake the sample cup to accelerate the reagent reaction.

[0007] Furthermore, the shaking mechanism includes a connecting column fixedly mounted on a limiting plate, a connecting seat fixedly mounted on the outside of the connecting column, a first connecting rod rotatably mounted on the connecting seat, a second connecting rod rotatably connected to the first connecting rod, and a limiting groove provided on the limiting plate, the driving shaft of the motor passes through the bottom of the water bath and the limiting plate and is coaxially fixedly connected to the connecting column, the top end of the connecting column is fixedly connected to a fixing plate, the second connecting rod is movably connected to the placement seat, a connecting rod is slidably mounted in the limiting groove, and the connecting rod is fixedly connected to the bottom of the placement seat.

[0008] By adopting the above technical solution, the sample bottle is shaken to speed up the reaction.

[0009] Furthermore, the limiting groove is arranged in a continuous arc shape, and a limiting block is movably arranged on the limiting groove, and the top of the limiting block is rotatably connected to the bottom of the connecting rod.

[0010] By adopting the above technical solution, the stability during shaking is improved.

[0011] Furthermore, a universal ball head is fixedly mounted on one end of the second connecting rod away from the connecting column, a ball seat used in conjunction with the universal ball head is fixedly connected to one side of the placement seat, and a return spring is fixedly connected between the first connecting rod and the second connecting rod.

[0012] By adopting the above technical solution, the stability during shaking is further improved.

[0013] Furthermore, a cover plate is detachably connected to the upper end of the water bath, and a through hole is provided on the cover plate.

[0014] By adopting the above technical solution, it is convenient to inspect the inside of the water bath.

[0015] Furthermore, a peristaltic pump is fixedly installed inside the analyzer body, a connecting tube is fixedly connected to the output end of the peristaltic pump, a liquid level detector is fixedly installed inside the analyzer body, and the connecting tube is clamped on the surface of the liquid level detector.

[0016] By adopting the above technical solution, the reagent can be quantitatively taken.

[0017] Furthermore, a three-way solenoid valve is fixedly installed inside the analyzer body, and a first interface, a second interface and a third interface are provided on the three-way solenoid valve. The first interface, the second interface and the third interface are all connected to the connecting pipe, and solenoid valves are fixedly installed on the second interface and the third interface.

[0018] By adopting the above technical solution, the quantitative control of liquid extraction can be further achieved.

[0019] Furthermore, a connecting pipe is installed inside the liquid adding dripper and the titration dripper.

[0020] By adopting the above technical solution, quantitative liquid addition and titration are performed.

[0021] The beneficial effects of the utility model are as follows: compared with the prior art, in the utility model, the sample bottle is evenly heated by a water bath, the reaction efficiency of the reagent is improved, and then the motor drives the connecting column to rotate, the connecting column cooperates with the first connecting rod and the second connecting rod to drive the placement seat to rotate, and the placement seat cooperates with the connecting rod and the limiting groove so that the sample cup placed on the placement seat moves along the track of the limiting groove while making a circular motion around the connecting column, so that the reagent in the sample cup shakes left and right while making a centrifugal motion, further accelerating the reaction efficiency of the reagent and shortening the permanganate index analysis time;

[0022] Through the cooperation between the peristaltic pump, the liquid level detector and the three-way solenoid valve, quantitative liquid feeding for liquid addition and titration is achieved with high precision, thereby improving the accuracy of permanganate index analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the water bath box in the utility model;

[0025] Figure 3 It is a schematic diagram of the internal structure of the water bath in the utility model;

[0026] Figure 4 It is a structural schematic diagram of the connecting column and the placement seat in the utility model;

[0027] Figure 5 It is a structural schematic diagram of the limiting plate in the utility model;

[0028] Figure 6 It is a schematic diagram of the cross-sectional structure of the limiting plate in the utility model;

[0029] Figure 7 This is a connection diagram of the peristaltic pump, the liquid level detector and the three-way solenoid valve in the utility model;

[0030] Figure 8 It is a schematic diagram of pipeline connection in the utility model.

[0031] The markings in the figure are: 1. Analyzer body; 2. Motor; 3. Sample cup; 4. Water bath; 5. Fixed plate; 6. Heating resistor wire; 7. Limit plate; 8. Connecting column; 9. Placement seat; 10. Placement slot; 11. Connecting seat; 12. First connecting rod; 13. Second connecting rod; 14. Universal ball head; 15. Limit slot; 16. Connecting rod; 17. Limit block; 18. Peristaltic pump; 19. Connecting pipe; 20. Liquid level detector; 21. Three-way solenoid valve; 22. First interface; 23. Second interface; 24. Third interface; 25. Solenoid valve; 26. Cover plate; 27. Liquid adding dropper; 28. Liquid adding level; 29. ​​Titration dropper; 30. Dropping position; 31. Transfer robot arm; 32. Reset spring. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The following is combined with Figure 1-7 The utility model is further described.

[0035] In order to solve the problems existing in the background technology, the present application proposes the following technical solutions: a permanganate index analyzer with liquid inlet, water bath and titration functions, including an analyzer body 1, a liquid adding dripper 27 is fixedly installed on the analyzer body 1, and a liquid adding position 28 is arranged below the liquid adding dripper 27. During the liquid adding process, the sample cup 3 is moved to the liquid adding position 28 by the transfer mechanical arm 31, and the liquid adding dripper 27 adds liquid to the inside of the sample cup 3, and 10ml of potassium permanganate and 5ml of sulfuric acid solution are added to the sample cup 3. A titration dripper 29 is fixedly installed on the analyzer body 1, and a drop position 30 is arranged below the titration dripper 29. After the water bath ends, The sample cup 3 is moved from the water bath 4 to the position of the drop position 30 by the transfer robot 31, and the titration dripper 29 adds 10 ml of sodium oxalate in the placement tank into the sample cup 3. The titration dripper 29 then adds potassium permanganate to the sample cup 3 for titration. A plunger pump is used for titration, and the inlet connecting tube 19 is placed in an external reagent bottle. The outlet connecting tube 19 is connected to the dripper to control the flow of reagents for titration. The control is more precise, making the experimental data more accurate. A transfer robot 31 is fixedly connected to one side of the titration dripper 29. The transfer robot 31 is used to move the sample cup 3 to the liquid addition, water bath and titration positions, and fully automatic permanganate index analysis is achieved through automatic liquid addition, water bath and titration.

[0036] A water bath 4 is fixedly installed inside the analyzer body 1. The water bath 4 is used to heat the sample cup 3 so that the sample cup 3 is heated evenly and the reaction efficiency of the reagent is improved. A heating resistor 6 is fixedly installed on the inner wall of the water bath 4. The heating resistor 6 is used to heat water. A motor 2 is fixedly installed at the bottom of the water bath 4. The motor 2 is used to drive the sample cup 3 to rotate so that the reagent in the sample cup 3 undergoes centrifugal motion to accelerate the reagent reaction. A limiting disk 7 is fixedly installed inside the water bath 4. A placement seat 9 is movably installed on the limiting disk 7. A placement groove 10 is provided on the placement seat 9. The sample cup 3 is placed on the placement groove 10. The placement seat 9 is used to place the sample cup 3. The setting of the placement groove 10 makes the sample cup 3 more stable when placed. A shaking mechanism is provided on the limiting disk 7. The shaking mechanism is used to shake the sample cup 3 to accelerate the reagent reaction.

[0037] It is further explained that the shaking mechanism includes a connecting column 8 fixedly installed on the limiting disk 7, a connecting seat 11 fixedly installed on the outside of the connecting column 8, a first connecting rod 12 rotatably installed on the connecting seat 11, a second connecting rod 13 rotatably connected to the first connecting rod 12, and a limiting groove 15 provided on the limiting disk 7. The driving shaft of the motor 2 passes through the bottom of the water bath 4 and the limiting disk 7 and is coaxially fixedly connected to the connecting column 8. The top of the connecting column 8 is fixedly connected to a fixed disk 5, and a through hole is provided on the fixed disk 5. The diameter of the through hole is larger than the sample cup 3. This arrangement allows the through hole to limit the movement of the sample cup 3 to prevent the sample cup 3 from tipping over during the shaking process. At the same time, the sample cup 3 can also move within a certain range in the through hole. The second connecting rod 13 is movably connected to the placement seat 9, and a connecting rod 16 is slidably installed in the limiting groove 15. The connecting rod 16 is fixedly connected to the bottom of the placement seat 9 (as shown in the attached figure). Figure 4 shown).

[0038] The motor 2 drives the connecting column 8 to rotate, and the connecting column 8 drives the connecting seat 11 to rotate. The connecting seat 11 cooperates with the first connecting rod 12 and the second connecting rod 13 to drive the placement seat 9 to rotate, so that the reagent in the sample cup 3 performs centrifugal motion to accelerate the reagent reaction efficiency. The placement seat 9 rotates and drives the connecting rod 16 to rotate. Since the connecting rod 16 is slidably installed in the limiting groove 15, the limiting groove 15 limits the connecting rod 16. At the same time, the placement seat 9 is movably connected to the connecting column 8 through the first connecting rod 12 and the second connecting rod 13, so the placement seat 9 moves along the track of the limiting groove 15 while performing a circular motion around the connecting column 8.

[0039] It is further explained that the limit groove 15 is arranged in a continuous arc shape (as shown in the attached Figure 5 As shown), the limiting groove 15 is movably provided with a limiting block 17, and the top of the limiting block 17 is rotatably connected to the bottom of the connecting rod 16 (as shown Figure 6 shown).

[0040] The placement seat 9 moves along the track of the limiting groove 15. Because the limiting groove 15 is arranged in an arc shape, the placement seat 9 shakes left and right, and then the reagent in the sample cup 3 shakes left and right while performing centrifugal motion, further accelerating the reaction efficiency of the reagent.

[0041] It is further explained that a universal ball head 14 is fixedly installed on one end of the second connecting rod 13 away from the connecting column 8, and a ball seat used in conjunction with the universal ball head 14 is fixedly connected to one side of the placement seat 9. A return spring 32 is fixedly connected between the first connecting rod 12 and the second connecting rod 13, and the return spring 32 is made of stainless steel.

[0042] The setting of the universal ball head 14 improves the stability of the placement seat 9 when it moves. When the placement seat 9 is located in the middle position of the arc of the limiting groove 15, the reset spring 32 is in a normal state. When the placement seat 9 is at the crest of the arc of the limiting groove 15, the reset spring 32 is in a stretched state. When the placement seat 9 is at the trough of the arc of the limiting groove 15, the reset spring 32 is in a compressed state. When the reset spring 32 is in a stretched or compressed state, the reset spring 32 restores the initial state, drives the placement seat 9 to move, and makes the placement seat 9 slide smoothly on the limiting groove 15, thereby improving the stability of the sample cup 3 when it shakes.

[0043] It is further explained that a cover plate 26 is detachably connected to the upper end of the water bath box 4 , and a through hole is formed on the cover plate 26 .

[0044] The cover plate 26 can effectively slow down the evaporation of water in the water bath 4 , and the detachable cover plate 26 can facilitate the inspection and maintenance of the interior of the water bath 4 .

[0045] It is further explained that a peristaltic pump 18 is fixedly installed inside the analyzer body 1. The peristaltic pump 18 outputs a fixed amount of fluid every time it rotates one circle. Therefore, its flow control is very precise and can perform quantitative control on the addition of liquid. A connecting tube 19 is fixedly connected to the output end of the peristaltic pump 18. The connecting tube 19 is used to transport reagents. A liquid level detector 20 is fixedly installed inside the analyzer body 1. The connecting tube 19 is clamped on the surface of the liquid level detector 20. The connecting tube 19 is used for quantitative control of reagents.

[0046] The peristaltic pump 18 rotates to extract and output reagents through the connecting tube 19. When the liquid level detector 20 detects liquid, the peristaltic pump 18 stops rotating. Through the setting of the liquid level detector 20, the purpose of quantitative liquid intake is achieved with high accuracy.

[0047] It is further explained that a three-way solenoid valve 21 is fixedly installed inside the analyzer body 1, and a first interface 22, a second interface 23 and a third interface 24 are provided on the three-way solenoid valve 21. The first interface 22, the second interface 23 and the third interface 24 are all connected to the connecting tube 19, and the second interface 23 and the third interface 24 are fixedly installed with an electromagnetic valve 25. The connecting tube 19 at one end of the second interface 23 is arranged in a liquid adding dripper 27, and the connecting tube 19 at one end of the third interface 24 is connected to an external reagent bottle for extracting reagents.

[0048] During the liquid adding process, the first interface 22 is always kept in the connected state, the second interface 23 is closed by the electromagnetic valve 25, the third interface 24 is opened, and the peristaltic pump 18 is started. The peristaltic pump 18 rotates to draw the reagent from the external reagent bottle into the connecting tube 19. When the liquid level detector 20 detects the reagent, the peristaltic pump 18 stops rotating, and at the same time, the third interface 24 is closed by the electromagnetic valve 25, and the second interface 23 is opened. Then the peristaltic pump 18 reverses and injects the reagent in the connecting tube 19 into the sample cup 3 from the liquid adding dripper 27, thereby achieving the purpose of quantitative liquid addition with high accuracy.

[0049] Four groups of peristaltic pumps 18, liquid level detectors 20 and three-way solenoid valves 21 are provided, which are respectively used for quantitative liquid inlet control of sulfuric acid solution, sodium oxalate solution, sodium hydroxide solution and potassium permanganate solution.

[0050] It is further explained that a connecting pipe 19 is installed inside the liquid adding dripper 27 and the titration dripper 29 , and the reagent for quantitative liquid inlet control is added into the sample cup 3 from the liquid adding dripper 27 and the titration dripper 29 through the connecting pipe 19 .

[0051] The specific operation is as follows: start the peristaltic pump 18, and the peristaltic pump 18 rotates to draw the reagent from the external reagent bottle into the connecting tube 19. When the liquid level detector 20 detects the reagent, the peristaltic pump 18 stops rotating, and at the same time closes the third interface 24 through the electromagnetic valve 25, opens the second interface 23, and then the peristaltic pump 18 reverses to inject the reagent in the connecting tube 19 into the sample cup 3 from the liquid adding drip head 27, and 10ml potassium permanganate and 5ml sulfuric acid solution are added to the sample cup 3. The transfer robot 31 moves the sample cup 3 to the water bath 4. The sample cup 3 is placed on the placement seat 9, and the motor 2 is started. The motor 2 drives the placement seat 9 to move along the track of the limit groove 15 while making a circular motion around the connecting column 8 through the connecting column 8, the first connecting rod 12 and the second connecting rod 13, so that the reagent in the sample cup 3 shakes left and right while making a centrifugal motion. After the water bath heating is completed, the sample cup 3 is moved to the dropping position 30 by the transfer robot 31, and the titration dripper 29 adds 10 ml of sodium oxalate in the placement groove into the sample cup 3, and the titration dripper 29 then adds potassium permanganate into the sample cup 3 for titration.

[0052] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0053] Although the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A permanganate index analyzer with liquid inlet, water bath and titration functions, characterized in that: The analyzer comprises an analyzer body (1), a liquid adding dripper (27) is fixedly mounted on the analyzer body (1), a liquid adding position (28) is arranged below the liquid adding dripper (27), a titration dripper (29) is fixedly mounted on the analyzer body (1), a titration position (30) is arranged below the titration dripper (29), a transfer mechanical arm (31) is fixedly connected to one side of the titration dripper (29), a water bath (4) is fixedly mounted inside the analyzer body (1), and the water bath A heating resistor wire (6) is fixedly mounted on the inner wall of the water bath (4); a motor (2) is fixedly mounted on the bottom of the water bath (4); a limit plate (7) is fixedly mounted inside the water bath (4); a placement seat (9) is movably mounted on the limit plate (7); a placement groove (10) is provided on the placement seat (9); a sample cup (3) is placed on the placement groove (10); a shaking mechanism is provided on the limit plate (7); the shaking mechanism is used to shake the sample cup (3) to accelerate the reagent reaction.

2. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 1, characterized in that: The shaking mechanism comprises a connecting column (8) fixedly mounted on a limiting plate (7), a connecting seat (11) fixedly mounted outside the connecting column (8), a first connecting rod (12) rotatably mounted on the connecting seat (11), a second connecting rod (13) rotatably connected to the first connecting rod (12), and a limiting groove (15) provided on the limiting plate (7); a driving shaft of the motor (2) passes through the bottom of the water bath (4) and the limiting plate (7) and is coaxially fixedly connected to the connecting column (8); a fixing plate (5) is fixedly connected to the top of the connecting column (8); the second connecting rod (13) is movably connected to the placement seat (9); a connecting rod (16) is slidably mounted in the limiting groove (15); and the connecting rod (16) is fixedly connected to the bottom of the placement seat (9).

3. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 2, characterized in that: The limiting groove (15) is arranged in a continuous arc shape, and a limiting block (17) is movably arranged on the limiting groove (15), and the top of the limiting block (17) is rotatably connected to the bottom of the connecting rod (16).

4. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 3, characterized in that: A universal ball head (14) is fixedly mounted on one end of the second connecting rod (13) away from the connecting column (8); a ball seat used in conjunction with the universal ball head (14) is fixedly connected to one side of the placement seat (9); and a return spring (32) is fixedly connected between the first connecting rod (12) and the second connecting rod (13).

5. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 4, characterized in that: The upper end of the water bath box (4) is detachably connected to a cover plate (26), and a through hole is provided on the cover plate (26).

6. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 5, characterized in that: A peristaltic pump (18) is fixedly installed inside the analyzer body (1), and a connecting tube (19) is fixedly connected to the output end of the peristaltic pump (18). A liquid level detector (20) is fixedly installed inside the analyzer body (1), and the connecting tube (19) is clamped on the surface of the liquid level detector (20).

7. A permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 6, characterized in that: A three-way solenoid valve (21) is fixedly installed inside the analyzer body (1); a first interface (22), a second interface (23) and a third interface (24) are provided on the three-way solenoid valve (21); the first interface (22), the second interface (23) and the third interface (24) are all connected to the connecting pipe (19); and solenoid valves (25) are fixedly installed on the second interface (23) and the third interface (24).

8. The permanganate index analyzer with liquid inlet, water bath and titration functions according to claim 7, characterized in that: The liquid adding dripper (27) and the titration dripper (29) are both provided with a connecting pipe (19) inside.

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