Full-automatic rapid digestion chemical oxygen demand analysis device

Abstract

The invention relates to the technical field of analysis devices, and particularly discloses a full-automatic rapid digestion chemical oxygen demand analysis device which comprises a shell assembly, a moving assembly, a quantifying assembly, a mixing assembly and a digestion assembly, the digestion assembly is located in the shell assembly, the moving assembly is located above the digestion assembly, the mixing assembly is located behind the digestion assembly, and the quantifying assembly is located in the shell assembly. The quantifying component is positioned on the left side of the digestion component; a panel and a fixed supporting plate are fixedly arranged in the shell assembly, the panel is perpendicular to the fixed supporting plate, the panel is parallel to the upper end face of the shell assembly, the quantitative assembly is located on the left side of the panel, a plurality of digestion pipes are arranged on the panel, and bottle caps are detachably arranged at the upper ends of the digestion pipes. According to the invention, full automation of rapid digestion chemical oxygen demand analysis of water can be realized, simultaneous operation of a large amount is realized, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of analysis devices, and in particular to a full-automatic rapid digestion chemical oxygen demand analysis device. Background Art

[0002] The content of organic matter in water is usually reflected by the indicator of chemical oxygen demand, which is called chemical oxygen demand in English, abbreviated as COD.

[0003] The hazards of high COD values ​​in water bodies are: 1. It means that there are too many organic matter in the water body. These organic matter will consume a lot of dissolved oxygen during the decomposition process, causing hypoxia in aquatic organisms and affecting their normal growth and survival. 2. The reduction of dissolved oxygen will accelerate the corruption and decomposition of organic matter in the water body, produce more toxic and harmful substances, such as ammonia nitrogen, etc., which will cause greater harm to aquatic organisms and water quality. 3. Excessive COD content will affect the balance of the water body's ecosystem, reduce the self-purification ability of the water body, and cause an imbalance in the water body's ecosystem. 4. Water with excessive COD contains many harmful substances. Long-term drinking of this water can easily lead to diseases in the digestive system, nervous system, etc. 5. Water pollution will have a great impact on fisheries, agriculture, tourism, etc., leading to economic losses. Therefore, it is very necessary to monitor the COD value in water bodies on a daily basis.

[0004] At present, there are two main monitoring methods for COD projects in water bodies in my country, one is the digestion reflux titration method, and the other is the rapid digestion spectrophotometry method. Both methods have their own advantages and disadvantages.

[0005] The advantage of the digestion reflux titration method is that it has higher accuracy, which is more advantageous for low-concentration drinking water or water bodies with extremely high accuracy requirements. The disadvantage is that the reagent ammonium ferrous sulfate used for titration is unstable and needs to be calibrated before each use. The digestion time takes 2 hours, which is relatively long.

[0006] The advantage of rapid digestion spectrophotometry is that the digestion only takes 15 minutes, which is short and efficient. The disadvantage is that its accuracy is lower than that of titration.

[0007] At present, the rapid digestion photometric instrument is usually a pre-made reagent package. When using, you need to add the reagent package to the water to be tested, then put the water into the digestion device, time the digestion, and then put the digestion solution into the colorimeter for measurement. The above process can only be done one at a time and cannot be done in large quantities. The operation is complicated and the efficiency is extremely low. Summary of the invention

[0008] In order to solve the above problems existing in the prior art, the present invention provides a fully automatic rapid digestion chemical oxygen demand analysis device, which can realize full automation of rapid digestion chemical oxygen demand analysis of water bodies, realize a large number of simultaneous operations, and improve detection efficiency.

[0009] The purpose of the present invention can be achieved through the following technical solutions: A fully automatic rapid digestion chemical oxygen demand analysis device comprises a housing component, a moving component, a quantitative component, a mixing component and a digestion component, wherein the digestion component is located inside the housing component, the moving component is located above the digestion component, the mixing component is located behind the digestion component, and the quantitative component is located on the left side of the digestion component; A panel and a fixed support plate are fixedly arranged inside the shell component, the panel and the fixed support plate are perpendicular to each other, the panel and the upper end surface of the shell component are parallel, the quantitative component is located on the left side of the panel, a plurality of digestion tubes are arranged on the panel, and a bottle cap is detachably arranged on the upper end of each digestion tube.

[0010] Further, the moving assembly includes a first moving screw rod, a second moving screw rod, upper and lower slide rails and an electric gripper, a first fixing frame is respectively provided at the left and right ends of the first moving screw rod, a second fixing frame is respectively fixedly provided at the upper and lower ends of the two first fixing frames, and the two first fixing frames and the two second fixing frames are perpendicular to each other; A second moving motor is rotatably provided at one end of the first moving screw rod, the second moving screw rod is slidably connected to the first moving screw rod, a moving slider is slidably provided on the second moving screw rod, the first moving motor is fixedly provided on the second moving screw rod, the upper and lower sliding rails are slidably connected to the moving slider, the electric gripper is slidably connected to the upper and lower sliding rails, and a third moving motor is fixedly provided on the upper and lower sliding rails.

[0011] Furthermore, the two first fixing frames and the two second fixing frames are all fixedly connected to the rear end of the fixed support plate, and the second movable screw rod is located in a movable groove provided in the fixed support plate.

[0012] Furthermore, the quantitative component includes a bottom bracket, a first driving slide rail, a second driving slide rail and a sampler, an upper baffle is fixedly provided on the left side of the panel, the bottom bracket is fixedly connected to the inner left side of the shell component, the bottom bracket is located at the lower end of the upper baffle, the first driving slide rail is fixedly connected to the upper end of the bottom bracket, a driving slider is slidably provided on the first driving slide rail, and a mounting bracket is fixedly provided on the upper end of the driving slider.

[0013] Furthermore, the second driving rail is fixedly connected to the mounting bracket, the sampler is slidably connected to the second driving rail, a driving motor is fixedly provided on the first driving rail, and a slot to be tested is provided on the panel.

[0014] Furthermore, the mixing assembly includes a mixing gripper, a waste liquid tank, a guide groove and a liquid adding pipe, a mixing bracket is fixedly arranged at the rear end of the fixed support plate, and a liquid adding motor is rotatably arranged at one end of the guide groove through a flange, and the flange is located at the upper end of the mixing bracket; The liquid adding tube is fixedly connected to the lower side of the other end of the guide groove, and the guide groove is located in the driving groove opened on the fixed support plate. A plurality of conveying pipes are arranged in the guide groove, and one end of the plurality of conveying pipes are connected to the liquid adding tube, and the other end of the plurality of conveying pipes are connected to various reagent bottles.

[0015] Furthermore, a mixing bin is provided on the right side of the waste liquid tank, and both the mixing bin and the waste liquid tank are located on the panel. A gripper motor is rotatably provided at one end of the mixing gripper, and one end of the gripper motor is fixedly connected to the rear end of the mixing bin. The mixing gripper is located inside the mixing bin.

[0016] Further, the digestion component includes a digestion tank, a placement tank, a measurement fixing seat and a measurement bracket, the digestion tank and the placement tank are both located on the panel, the digestion tank is located at the rear side of the placement tank, the measurement bracket is fixedly connected to the lower end of the panel, the upper end of the measurement bracket is fixedly provided with a measuring device and a power supply, and the measurement fixing seat is fixedly connected to the measuring device; The measuring fixed seat is located on the right side of the digestion tank, and the measuring fixed seat is located in the measuring hole opened on the panel. Three heating blocks are arranged at the lower end of the digestion tank, and a heating rod is arranged inside each of the heating blocks. A heat insulation board is fixedly arranged at the lower end of each of the heating blocks, and a zero adjustment hole is opened on the panel.

[0017] Furthermore, the shell assembly includes a box body, a door panel and two rotating hinges, the two rotating hinges are respectively located on the left and right sides of the interior of the box body, a support rod is fixedly arranged between the two rotating hinges, a baffle is fixedly arranged on each of the rotating hinges, the door panel is fixedly connected to the outer sides of the two baffles, two upper cover plates are fixedly arranged on the upper end of the box body, and two rear cover plates are fixedly arranged on the rear end of the box body.

[0018] Furthermore, an acrylic plate and a handle are fixedly provided on the door panel, the handle is located at the lower end of the acrylic plate, a supporting rib is fixedly provided at the lower end of the box body, four feet are fixedly provided at the lower end of the supporting rib, a component placement box is fixedly provided at the upper end of the interior of the box body, a reagent bottle fixing rack is provided on the left side of the box body, and a display screen is provided on the right side of the box body.

[0019] The beneficial effects of the present invention are: (1) By setting the moving component and the quantitative component, the technical effect that can be achieved is that an upper baffle is fixedly arranged on the left side of the panel, the bottom bracket is fixedly connected to the inner left side of the shell component, the bottom bracket is located at the lower end of the upper baffle, the first driving slide rail is fixedly connected to the upper end of the bottom bracket, a driving slider is slidably arranged on the first driving slide rail, a mounting bracket is fixedly arranged on the upper end of the driving slider, the second driving slide rail is fixedly connected to the mounting bracket, the sampler is slidably connected to the second driving slide rail, a driving motor is fixedly arranged on the first driving slide rail, and a slot to be tested is arranged on the panel; After the quantitative component moves to the top of the corresponding sample in the test tank, the sampler descends and extracts the sample to be tested in the sample cup, and then moves to the waste liquid tank to drain the liquid for rinsing the pipeline. Then the quantitative component moves again to the top of the corresponding sample in the test tank, extracts the required sample volume, and moves to the top of the digestion tube in the mixing chamber to move the sample to be tested into the digestion tube. The moving component and the quantitative component can realize the full automation of the rapid digestion of chemical oxygen demand analysis of water bodies, realize a large number of simultaneous operations, improve detection efficiency, realize automatic quantitative extraction of water samples, and be more automated and portable, avoiding sample contamination during manual operation.

[0020] (2) By setting a mixing component, the technical effect that can be achieved is that a mixing bracket is fixedly set at the rear end of the fixed support plate, a liquid adding motor is rotatably set at one end of the guide groove through a flange, the flange is located at the upper end of the mixing bracket, a liquid adding pipe is fixedly connected to the lower side of the other end of the guide groove, the guide groove is located in the driving groove opened on the fixed support plate, a plurality of conveying pipes are set in the guide groove, one end of the plurality of conveying pipes are connected to the liquid adding pipe, and the other end of the plurality of conveying pipes are connected to various reagent bottles; The guide groove rotates to the top of the digestion bottle in the mixing bin. After the liquid adding tube pushes out the reagent volume required for digestion, the guide groove rotates to the waste liquid tank position to make room. The moving component moves to the top of the digestion tube, the electric gripper tightens the bottle cap and leaves, and the mixing gripper rotates to mix the liquid in the digestion bottle. The mixing component can automatically add various reagents and mix them automatically without manual addition, making the addition of reagents more accurate, avoiding errors in manual operation, and making the solution mixing in the digestion bottle more uniform.

[0021] (3) By setting up the digestion component, the technical effect that can be achieved is that the digestion tank and the placement tank are both located on the panel, the digestion tank is located on the rear side of the placement tank, the measuring bracket is fixedly connected to the lower end of the panel, the upper end of the measuring bracket is fixedly provided with a measuring device and a power supply, the measuring fixing seat is fixedly connected to the measuring device, a plurality of fans are provided at the lower end of the placement tank, the measuring fixing seat is located on the right side of the digestion tank, the measuring fixing seat is located in the measuring hole opened on the panel, three heating blocks are provided at the lower end of the digestion tank, a heating rod is provided inside each heating block, and a heat insulation board is fixedly provided at the lower end of each heating block; The digestion tank is heated to 165°C, and the timing starts at 165°C for 15 minutes. The electric gripper grabs the digestion tube of the digestion tank to the placement tank. The fan at the bottom of the placement tank is turned on to cool the digestion tube to room temperature. The electric gripper grabs the digestion tube after cooling in the placement tank to the measurement fixture to measure the absorbance and calculate the concentration value through the software. The digestion component can automatically heat up the digestion and timing, automatically cool and automatically measure, making the digestion process more accurate, more automated and portable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0023] Figure 1 A perspective view of the present invention; Figure 2 This is a three-dimensional diagram of the present invention with the display screen and reagent bottle fixing frame removed; Figure 3 A three-dimensional diagram of the present invention with the display screen, reagent bottle fixing frame, upper cover plate and door plate removed; Figure 4 It is a right sectional view of the present invention with the display screen and the reagent bottle fixing frame removed; Figure 5 It is a front view of the housing assembly removed in the present invention; Figure 6 It is a rear view of the present invention with the housing assembly removed; Figure 7 A top view of the housing assembly removed in the present invention; Figure 8 is a three-dimensional diagram of a moving assembly in the present invention; Fig. 9 A three-dimensional diagram of a quantitative component in the present invention; Fig.10 A top view of the mixing assembly of the present invention; Fig.11 A rear view of the mixing assembly of the present invention; Fig.12 A top view of the digestion component of the present invention; Fig.13It is a front view of the digestion tube and the measurement fixing seat in the present invention; Fig.14 It is a front view of the digestion tank and the heating block in the present invention; Fig.15 It is a rear view of the measuring device and the measuring bracket in the present invention; Description of main component symbols: In the figure: 1, shell assembly; 11, upper cover; 12, display screen; 13, door panel; 14, acrylic panel; 15, handle; 16, box; 17, reagent bottle fixing rack; 18, rear cover; 19, foot; 110, support rib; 111, support rod; 112, component placement box; 113, baffle; 114, rotating hinge; 2. Moving assembly; 21. Fixed support plate; 22. First moving motor; 23. Second moving motor; 24. First fixed frame; 25. Second fixed frame; 26. Third moving motor; 27. First moving screw rod; 28. Moving slider; 29. ​​Second moving screw rod; 210. Upper and lower slide rails; 211. Electric gripper; 3. quantitative component; 31. upper baffle; 32. test slot; 33. bottom bracket; 34. first driving slide rail; 35. driving slide block; 36. mounting bracket; 37. driving motor; 38. sampler; 39. second driving slide rail; 4. Mixing assembly; 41. Mixing chamber; 42. Mixing bracket; 43. Gripper motor; 44. Mixing gripper; 45. Waste liquid tank; 46. Guide groove; 47. Liquid adding motor; 48. Flange; 49. Liquid adding pipe; 5. Digestion assembly; 51. Panel; 52. Digestion tank; 53. Power supply; 54. Placement tank; 55. Measurement fixing seat; 56. Heating rod; 57. Heating block; 58. Heat insulation board; 59. Measuring device; 510. Measuring bracket; 511. Measuring hole; 512. Zero adjustment hole; 6. Digestion tube; 61. Bottle cap. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected 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 this application can be understood according to specific circumstances.

[0027] Reference Figures 1 to 15 , is a fully automatic rapid digestion chemical oxygen demand analysis device disclosed in the present invention, comprising a shell component 1, a moving component 2, a quantitative component 3, a mixing component 4 and a digestion component 5, the digestion component 5 is located inside the shell component 1, the moving component 2 is located above the digestion component 5, the mixing component 4 is located behind the digestion component 5, and the quantitative component 3 is located on the left side of the digestion component 5.

[0028] A panel 51 and a fixed support plate 21 are fixedly arranged inside the outer shell component 1. The panel 51 and the fixed support plate 21 are perpendicular to each other. The panel 51 and the upper end surface of the outer shell component 1 are parallel. The quantitative component 3 is located on the left side of the panel 51. A plurality of digestion tubes 6 are arranged on the panel 51. A bottle cap 61 is detachably arranged on the upper end of the digestion tube 6.

[0029] The moving assembly 2 includes a first moving screw rod 27, a second moving screw rod 29, upper and lower sliding rails 210 and an electric gripper 211. A first fixed frame 24 is respectively provided at the left and right ends of the first moving screw rod 27, and a second fixed frame 25 is respectively fixed at the upper and lower ends of the two first fixed frames 24. The two first fixed frames 24 and the two second fixed frames 25 are perpendicular to each other.

[0030] A second moving motor 23 is rotatably provided at one end of the first moving screw rod 27, a second moving screw rod 29 is slidably connected to the first moving screw rod 27, a moving slider 28 is slidably provided on the second moving screw rod 29, the first moving motor 22 is fixedly provided on the second moving screw rod 29, the upper and lower sliding rails 210 are slidably connected to the moving slider 28, the electric gripper 211 is slidably connected to the upper and lower sliding rails 210, and a third moving motor 26 is fixedly provided on the upper and lower sliding rails 210.

[0031] The two first fixing frames 24 and the two second fixing frames 25 are all fixedly connected to the rear end of the fixed support plate 21 , and the second movable screw rod 29 is located in a movable groove defined in the fixed support plate 21 .

[0032] The quantitative component 3 includes a bottom bracket 33, a first driving rail 34, a second driving rail 39 and a sampler 38. An upper baffle 31 is fixedly provided on the left side of the panel 51. The bottom bracket 33 is fixedly connected to the inner left side of the shell component 1. The bottom bracket 33 is located at the lower end of the upper baffle 31. The first driving rail 34 is fixedly connected to the upper end of the bottom bracket 33. A driving slider 35 is slidably provided on the first driving rail 34. A mounting bracket 36 is fixedly provided on the upper end of the driving slider 35.

[0033] The second driving rail 39 is fixedly connected to the mounting bracket 36 , the sampler 38 is slidably connected to the second driving rail 39 , the driving motor 37 is fixedly arranged on the first driving rail 34 , and the test slot 32 is arranged on the panel 51 .

[0034] The mobile component 2 and the quantitative component 3 can realize the full automation of the rapid digestion of chemical oxygen demand analysis of water bodies, realize a large number of simultaneous operations, improve the detection efficiency, realize automatic quantitative extraction of water samples, make it more automated and portable, and avoid sample contamination during manual operation.

[0035] The mixing assembly 4 includes a mixing gripper 44, a waste liquid tank 45, a guide groove 46 and a liquid adding pipe 49. A mixing bracket 42 is fixedly provided at the rear end of the fixed support plate 21. A liquid adding motor 47 is rotatably provided at one end of the guide groove 46 through a flange 48. The flange 48 is located at the upper end of the mixing bracket 42.

[0036] A liquid adding pipe 49 is fixedly connected to the lower side of the other end of the guide groove 46. The guide groove 46 is located in the driving groove opened on the fixed support plate 21. A plurality of conveying pipes are arranged in the guide groove 46. One end of the plurality of conveying pipes is connected to the liquid adding pipe 49, and the other end of the plurality of conveying pipes is connected to various reagent bottles.

[0037] A mixing bin 41 is provided on the right side of the waste liquid tank 45. The mixing bin 41 and the waste liquid tank 45 are both located on the panel 51. A gripper motor 43 is rotatably provided at one end of the mixing gripper 44. One end of the gripper motor 43 is fixedly connected to the rear end of the mixing bin 41. The mixing gripper 44 is located inside the mixing bin 41.

[0038] The mixing component 4 can automatically add various reagents and mix them evenly without manual addition, so that the addition of reagents is more accurate, errors in manual operation are avoided, and the solutions in the digestion bottle are mixed more evenly.

[0039] The digestion component 5 includes a digestion tank 52, a placement tank 54, a measurement fixing seat 55 and a measurement bracket 510. The digestion tank 52 and the placement tank 54 are both located on the panel 51. The digestion tank 52 is located on the rear side of the placement tank 54. The measurement bracket 510 is fixedly connected to the lower end of the panel 51. A measuring device 59 and a power supply 53 are fixedly arranged at the upper end of the measurement bracket 510. The measurement fixing seat 55 is fixedly connected to the measuring device 59. A plurality of fans are arranged at the lower end of the placement tank 54.

[0040] The measuring fixed seat 55 is located on the right side of the digestion tank 52, and the measuring fixed seat 55 is located in the measuring hole 511 opened on the panel 51. Three heating blocks 57 are arranged at the lower end of the digestion tank 52, and a heating rod 56 is arranged inside each heating block 57. A heat insulation board 58 is fixedly arranged at the lower end of each heating block 57. A zeroing hole 512 is opened on the panel 51, and the zeroing hole 512 is located in the middle position of the placement slot 54. A digestion tube 6 is arranged in the zeroing hole 512, and pure water is built in it. A bottle cap 61 is arranged at the upper end of the digestion tube 6.

[0041] The digestion component 5 can automatically heat up for digestion and timing, automatically cool down and automatically measure, making the digestion process more accurate, more automated and more portable.

[0042] The outer shell assembly 1 includes a box body 16, a door panel 13 and two rotating hinges 114, the two rotating hinges 114 are respectively located on the left and right sides of the inside of the box body 16, a support rod 111 is fixedly arranged between the two rotating hinges 114, a baffle 113 is fixedly arranged on each rotating hinge 114, the door panel 13 is fixedly connected to the outer sides of the two baffles 113, two upper cover plates 11 are fixedly arranged at the upper end of the box body 16, and two rear cover plates 18 are fixedly arranged at the rear end of the box body 16.

[0043] An acrylic plate 14 and a handle 15 are fixedly provided on the door panel 13, and the handle 15 is located at the lower end of the acrylic plate 14. A supporting rib 110 is fixedly provided at the lower end of the box body 16, and four feet 19 are fixedly provided at the lower end of the supporting rib 110. A component placement box 112 is fixedly provided at the upper end of the interior of the box body 16, a reagent bottle fixing rack 17 is provided on the left side of the box body 16, and a display screen 12 is provided on the right side of the box body 16.

[0044] The working principle and use process of the present invention are as follows: the operator opens the operating software on the display screen 12, edits the sample information and content to be tested on the software, and clicks the run button, and the instrument can automatically run the following steps; The moving component 2 moves the digestion bottle placed in the slot 54 to the mixing bin 41, the mixing gripper 44 at the mixing bin 41 grips the body of the digestion bottle, the electric gripper 211 on the moving component 2 rotates, unscrews the bottle cap 61, and then the moving component 2 moves away from the mixing bin 41; After the quantitative component 3 moves to the top of the corresponding sample at the test tank 32, the sampler 38 descends and extracts the sample to be tested in the sample cup, and then moves to the waste liquid tank 45 to drain the liquid for rinsing the pipeline. Then the quantitative component 3 moves again to the top of the corresponding sample at the test tank 32, extracts the required sample volume, and then moves to the top of the digestion tube 6 at the mixing chamber 41 to move the sample to be tested into the digestion tube 6; The guide groove 46 rotates to the top of the digestion bottle in the mixing chamber 41. After the liquid adding tube 49 pushes out the reagent volume required for digestion, the guide groove 46 rotates to the position of the waste liquid tank 45 to make room. The moving assembly 2 moves to the top of the digestion tube 6. The electric gripper 211 tightens the bottle cap 61 and leaves. The mixing gripper 44 rotates to drive the liquid in the digestion bottle to mix evenly. The moving assembly 2 moves to the top of the digestion tube 6, grabs the digestion tube 6, and transfers it to the digestion tank 52. If there are multiple samples, the above steps are repeated until the digestion tank 52 is full. The digestion tank 52 is heated to 165°C, and the timer starts at 165°C for 15 minutes; The electric gripper 211 grabs the digestion tube 6 of the digestion tank 52 to the placement tank 54, and the fan at the lower end of the placement tank 54 is turned on to cool the digestion tube 6 to room temperature; At the same time, the electric gripper 211 moves the digestion tube 6 in the zeroing hole 512 to the measuring fixed seat 55 of the measuring hole 511 to perform a zeroing operation, so that the measuring device 59 obtains an initial electrical signal value for calculating the absorbance after subsequent detection. After completing the zeroing operation, the electric gripper 211 moves the digestion tube 6 back to the zeroing hole 512; The electric gripper 211 grabs the digestion tube 6 after cooling down in the placement tank 54 to the measurement fixing seat 55, measures the absorbance, and calculates the concentration value through the software; The electric gripper 211 grabs the digestion tube 6 measured at the measurement fixing seat 55 to the placement slot 54, and then grabs the unmeasured digestion tube 6 in the placement slot 54 in turn, and repeats the operation to complete the measurement of the sample.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A fully automatic rapid digestion chemical oxygen demand analysis device, characterized in that: The invention comprises a housing component (1), a moving component (2), a quantitative component (3), a mixing component (4) and a digestion component (5), wherein the digestion component (5) is located inside the housing component (1), the moving component (2) is located above the digestion component (5), the mixing component (4) is located behind the digestion component (5), and the quantitative component (3) is located on the left side of the digestion component (5); A panel (51) and a fixed support plate (21) are fixedly arranged inside the housing component (1); the panel (51) and the fixed support plate (21) are perpendicular to each other; the panel (51) and the upper end surface of the housing component (1) are parallel to each other; the quantitative component (3) is located on the left side of the panel (51); a plurality of digestion tubes (6) are arranged on the panel (51); and a bottle cap (61) is detachably arranged on the upper end of each digestion tube (6); The moving assembly (2) comprises a first moving screw rod (27), a second moving screw rod (29), upper and lower sliding rails (210) and an electric gripper (211); a first fixing frame (24) is respectively arranged at the left and right ends of the first moving screw rod (27); a second fixing frame (25) is respectively fixedly arranged at the upper and lower ends of the two first fixing frames (24); the two first fixing frames (24) and the two second fixing frames (25) are perpendicular to each other; A second moving motor (23) is rotatably provided at one end of the first moving screw rod (27); the second moving screw rod (29) is slidably connected to the first moving screw rod (27); a moving slider (28) is slidably provided on the second moving screw rod (29); the first moving motor (22) is fixedly provided on the second moving screw rod (29); the upper and lower slide rails (210) are slidably connected to the moving slider (28); the electric gripper (211) is slidably connected to the upper and lower slide rails (210); and a third moving motor (26) is fixedly provided on the upper and lower slide rails (210); The quantitative component (3) comprises a bottom bracket (33), a first driving slide rail (34), a second driving slide rail (39) and a sampler (38); an upper baffle (31) is fixedly arranged on the left side of the panel (51); the bottom bracket (33) is fixedly connected to the inner left side of the housing component (1); the bottom bracket (33) is located at the lower end of the upper baffle (31); the first driving slide rail (34) is fixedly connected to the upper end of the bottom bracket (33); a driving slider (35) is slidably arranged on the first driving slide rail (34); and a mounting bracket (36) is fixedly arranged on the upper end of the driving slider (35).

2. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 1, characterized in that: The two first fixing frames (24) and the two second fixing frames (25) are both fixedly connected to the rear end of the fixed support plate (21), and the second movable screw rod (29) is located in a movable groove provided in the fixed support plate (21).

3. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 1, characterized in that: The second driving rail (39) is fixedly connected to the mounting bracket (36), the sampler (38) is slidably connected to the second driving rail (39), a driving motor (37) is fixedly arranged on the first driving rail (34), and a slot to be tested (32) is arranged on the panel (51).

4. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 1, characterized in that: The mixing assembly (4) comprises a mixing gripper (44), a waste liquid tank (45), a guide groove (46) and a liquid adding pipe (49); a mixing bracket (42) is fixedly provided at the rear end of the fixed support plate (21); a liquid adding motor (47) is rotatably provided at one end of the guide groove (46) via a flange (48); and the flange (48) is located at the upper end of the mixing bracket (42); The lower side of the other end of the guide groove (46) is fixedly connected with the liquid adding pipe (49), the guide groove (46) is located in the driving groove provided on the fixed support plate (21), a plurality of conveying pipes are arranged in the guide groove (46), one end of the plurality of conveying pipes are connected with the liquid adding pipe (49), and the other end of the plurality of conveying pipes are connected with various reagent bottles.

5. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 4, characterized in that: A mixing bin (41) is provided on the right side of the waste liquid tank (45); the mixing bin (41) and the waste liquid tank (45) are both located on the panel (51); a gripper motor (43) is rotatably provided at one end of the mixing gripper (44); one end of the gripper motor (43) is fixedly connected to the rear end of the mixing bin (41); and the mixing gripper (44) is located inside the mixing bin (41).

6. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 1, characterized in that: The digestion assembly (5) comprises a digestion tank (52), a placement tank (54), a measurement fixing seat (55) and a measurement bracket (510); the digestion tank (52) and the placement tank (54) are both located on the panel (51); the digestion tank (52) is located at the rear side of the placement tank (54); the measurement bracket (510) is fixedly connected to the lower end of the panel (51); a measuring device (59) and a power supply (53) are fixedly arranged at the upper end of the measurement bracket (510); and the measurement fixing seat (55) is fixedly connected to the measuring device (59); The measuring fixed seat (55) is located on the right side of the digestion tank (52), and the measuring fixed seat (55) is located in the measuring hole (511) opened on the panel (51). Three heating blocks (57) are arranged at the lower end of the digestion tank (52), and a heating rod (56) is arranged inside each of the heating blocks (57). A heat insulation board (58) is fixedly arranged at the lower end of each of the heating blocks (57). A zero adjustment hole (512) is opened on the panel (51).

7. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 1, characterized in that: The housing assembly (1) comprises a box body (16), a door panel (13) and two rotating hinges (114); the two rotating hinges (114) are respectively located on the left and right sides of the box body (16); a support rod (111) is fixedly arranged between the two rotating hinges (114); a baffle (113) is fixedly arranged on each rotating hinge (114); the door panel (13) is fixedly connected to the outer sides of the two baffles (113); two upper cover plates (11) are fixedly arranged at the upper end of the box body (16); and two rear cover plates (18) are fixedly arranged at the rear end of the box body (16).

8. The fully automatic rapid digestion chemical oxygen demand analysis device according to claim 7, characterized in that: An acrylic plate (14) and a handle (15) are fixedly arranged on the door panel (13), wherein the handle (15) is located at the lower end of the acrylic plate (14); a supporting rib (110) is fixedly arranged at the lower end of the box body (16), wherein four footings (19) are fixedly arranged at the lower end of the supporting rib (110); a component placement box (112) is fixedly arranged at the upper end of the interior of the box body (16); a reagent bottle fixing rack (17) is arranged on the left side of the box body (16), and a display screen (12) is arranged on the right side of the box body (16).

Images