Mechanical arm for chemical oxygen demand analyzer

Abstract

The utility model provides a mechanical arm for a chemical oxygen demand analyzer, which comprises a coaxial mechanical arm main body, a mechanical arm component is arranged on the coaxial mechanical arm main body, and a first motor and a second motor are respectively arranged on two sides of the coaxial mechanical arm main body. The output end of the first motor and the output end of the second motor are both connected with the mechanical arm assembly. Compared with the prior art, the utility model has the following beneficial effects: the rotating arm I and the rotating arm II are coaxial and concentric, share one open hole and are compactly integrated and matched, so that the space is saved, and the titration mechanical arm and the liquid adding mechanical arm can operate simultaneously and do not interfere with each other in action, thereby being beneficial to synchronous processing of multiple tasks of liquid adding and titration.

Description

Technical Field

[0001] The utility model relates to a mechanical arm for a chemical oxygen demand analyzer, belonging to the field of laboratory testing equipment. Background Art

[0002] As the country attaches more importance to the marine industry, higher requirements are also put forward for the accuracy of seawater monitoring. Chemical oxygen demand, as a basic monitoring item in seawater monitoring projects, is directly related to the quality of seawater.

[0003] However, the determination process of chemical oxygen demand in "GB17378.42007 Marine Monitoring Specification Part 4: Seawater Analysis" is complicated, and requires adding digestion reagents, heating and boiling for 10 minutes, rapidly cooling to room temperature, adding reaction reagents, reacting in a darkroom for 5 minutes, calibrating, and adding reagents again in the middle. There are too many cross-actions during the multi-sample operation, which takes a long time. In order to meet the requirements of shortening the measurement time, the chemical oxygen demand analyzers in seawater currently on the market use multiple robotic arms to run and process different processes at the same time. However, because multiple robotic arms need to avoid mutual interference, the distance between the robotic arms is large, which occupies a large amount of instrument space and makes the instrument too large, so the robotic arms need to be improved and designed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a mechanical arm for a chemical oxygen demand analyzer.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A mechanical arm for a chemical oxygen demand analyzer comprises a coaxial mechanical arm body, a mechanical arm assembly is arranged on the coaxial mechanical arm body, a first motor and a second motor are arranged on both sides of the coaxial mechanical arm body, and the output end of the first motor and the output end of the second motor are both connected to the mechanical arm assembly.

[0007] Furthermore, the robotic arm assembly includes a rotating arm 1 and a rotating arm 2, both of which are movably connected to the inside of the coaxial robotic arm body through bearings, the rotating arm 1 is located inside the rotating arm 2, the rotating arm 1 and the rotating arm 2 are coaxial and concentric, and a titration robotic arm is provided on the outer surface of the end of the rotating arm 2, and the end of the rotating arm 1 passes through the outside of the rotating arm 2 and is connected to the liquid adding robotic arm.

[0008] Furthermore, the first motor is connected to the side of the coaxial robotic arm body through a first motor support, and a side output end of the first motor is connected to the end of the rotating arm 1.

[0009] Furthermore, the second motor is connected to the side of the coaxial robotic arm body through a second motor support, a driving synchronous wheel is provided at the side output end of the second motor, a driven synchronous wheel is provided on the outer surface of the rotating arm 2, and the driving synchronous wheel and the driven synchronous wheel are connected by a synchronous belt.

[0010] Beneficial effects of the utility model:

[0011] The first rotating arm and the second rotating arm of the utility model are coaxial and cocentric, share an opening, and are compactly integrated and matched, thus saving space.

[0012] The titration mechanical arm and the liquid adding mechanical arm of the utility model can operate simultaneously without interfering with each other's actions, which is beneficial to the synchronous processing of liquid adding and titration multitasks. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of a mechanical arm for a chemical oxygen demand analyzer of the utility model;

[0015] Figure 2 This is a schematic diagram of the top view of a mechanical arm for a chemical oxygen demand analyzer of the utility model;

[0016] Figure 3 The utility model is a schematic diagram of the side structure of a mechanical arm for a chemical oxygen demand analyzer.

[0017] In the figure, 1. coaxial robotic arm main body; 2. titration robotic arm; 3. liquid adding robotic arm; 4. first motor; 5. first motor support; 6. rotating arm one; 7. second motor; 8. second motor support; 9. rotating arm two; 10. synchronous belt; 11. active synchronous wheel; 12. driven synchronous wheel. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 3The utility model provides a technical solution for a mechanical arm for a chemical oxygen demand analyzer, including a coaxial mechanical arm body 1, on which a mechanical arm assembly is provided, and a first motor 4 and a second motor 7 are respectively provided on both sides of the coaxial mechanical arm body 1, and the output end of the first motor 4 and the output end of the second motor 7 are both connected to the mechanical arm assembly; in the utility model, the first motor 4 and the second motor 7 can respectively drive the two output ends of the mechanical arm assembly to perform processing actions, and do not interfere with each other.

[0020] See also Figure 1-Figure 3 The mechanical arm assembly includes a rotating arm 1 6 and a rotating arm 2 9, both of which are movably connected to the inside of the coaxial mechanical arm body 1 through bearings, the rotating arm 1 6 is located inside the rotating arm 2 9, the rotating arm 1 6 and the rotating arm 2 9 are coaxial and concentric, and the outer surface of the end of the rotating arm 2 9 is provided with a titration mechanical arm 2, the end of the rotating arm 1 6 penetrates to the outside of the rotating arm 2 9 and is connected to the liquid adding mechanical arm 3, the first motor 4 is connected to the side of the coaxial mechanical arm body 1 through the first motor support 5, and the side output end of the first motor 4 is connected to the The end of the rotating arm 1 6 is connected, the second motor 7 is connected to the side of the coaxial robotic arm body 1 through the second motor support 8, the side output end of the second motor 7 is provided with an active synchronous wheel 11, the outer surface of the rotating arm 2 9 is provided with a driven synchronous wheel 12, and the active synchronous wheel 11 and the driven synchronous wheel 12 are connected by a synchronous belt 10; the rotating arm 1 6 and the rotating arm 2 9 are coaxial and concentric, share an opening, and are compactly integrated to save space. In addition, the titration robotic arm 2 and the liquid adding robotic arm 3 can operate simultaneously without interfering with each other, which is conducive to the synchronous processing of liquid adding and titration multi-tasks.

[0021] When in use, the rotating arm 1 6 and the rotating arm 2 9 are coaxial and concentric, share an opening, and are compactly integrated on the coaxial robotic arm body 1, saving space. Under the action of the first motor 4 and the second motor 7, the titration robotic arm 2 and the liquid adding robotic arm 3 can operate synchronously on the coaxial robotic arm body 1, and the processing actions do not interfere with each other, which is conducive to the synchronous processing of multiple tasks of liquid adding and titration.

[0022] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mechanical arm for a chemical oxygen demand analyzer, characterized in that: The invention comprises a coaxial mechanical arm body (1), on which a mechanical arm assembly is provided, and on both sides of the coaxial mechanical arm body (1) are respectively provided a first motor (4) and a second motor (7), wherein the output end of the first motor (4) and the output end of the second motor (7) are both connected to the mechanical arm assembly.

2. A mechanical arm for a chemical oxygen demand analyzer according to claim 1, characterized in that: The mechanical arm assembly comprises a rotating arm 1 (6) and a rotating arm 2 (9), both of which are movably connected to the inside of the coaxial mechanical arm body (1) through bearings, the rotating arm 1 (6) is located inside the rotating arm 2 (9), the rotating arm 1 (6) and the rotating arm 2 (9) are coaxial and concentric, the outer surface of the end of the rotating arm 2 (9) is provided with a titration mechanical arm (2), and the end of the rotating arm 1 (6) passes through the outer side of the rotating arm 2 (9) and is connected to the liquid adding mechanical arm (3).

3. A mechanical arm for a chemical oxygen demand analyzer according to claim 2, characterized in that: The first motor (4) is connected to the side of the coaxial mechanical arm body (1) via a first motor support (5), and the side output end of the first motor (4) is connected to the end of the rotating arm (6).

4. A mechanical arm for a chemical oxygen demand analyzer according to claim 3, characterized in that: The second motor (7) is connected to the side of the coaxial mechanical arm body (1) via a second motor support (8); a driving synchronous wheel (11) is provided at the side output end of the second motor (7); a driven synchronous wheel (12) is provided on the outer surface of the second rotating arm (9); and the driving synchronous wheel (11) and the driven synchronous wheel (12) are connected via a synchronous belt (10).

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