Automatic sample loading and detecting system for COD (Chemical Oxygen Demand)

Abstract

The utility model discloses an automatic COD (Chemical Oxygen Demand) sample loading and detecting system which comprises a working table, a mechanical arm is fixedly connected to the working table, a digestion instrument is arranged on one side of the mechanical arm, a cooling assembly is arranged on one side of the digestion instrument, a spectrophotometer is arranged on the other side of the mechanical arm, a controller is arranged on one side of the spectrophotometer, and a controller is arranged on the other side of the spectrophotometer. A tray is arranged on one side of the controller, and the cooling assembly, the digestion instrument, the spectrophotometer, the controller and the tray are fixedly connected to the working table; according to the utility model, sample test tubes are transferred among the stations by utilizing the mechanical arm, so that the automation and standardization of sample loading, heating, cooling and detection processes are realized, the detection efficiency is improved, the heating and cooling time can be accurately controlled, and the accuracy of a detection result is ensured; and the cooling assembly adopts an air cooling and semiconductor refrigeration combined technology, so that the sample test tube can be quickly cooled under the condition of low noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to COD detection technical field, especially a kind of COD automatic sample loading detection system. BACKGROUND

[0002] COD is chemical oxygen demand, it is the amount of oxidizing agent consumed when certain strong oxidizing agent is used to treat water sample under certain conditions, it is an index indicating how much reducing material in water.In the existing COD detection technology, sample needs to be heated, cooled and spectrophotometrically detected, this process is usually realized by manual operation, there is the problem of low efficiency, and when large quantities of sample detection is carried out, operation delay is prone to occur, resulting in large error between heating and cooling time and standard time, thereby affecting the accuracy of detection result;At the same time, the existing cooling operation generally adopts air cooling to realize, and the efficiency of air cooling is low, which cannot realize rapid cooling of sample, although increasing air speed can improve cooling speed to some extent, but it will also cause noise increase. UTILITARIAN CONTENT

[0003] The utility model aims at providing a kind of COD automatic sample loading detection system to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical scheme: a kind of COD automatic sample loading detection system, including workbench, the workbench is fixedly connected with mechanical arm, one side of mechanical arm is provided with digestion instrument, one side of digestion instrument is provided with cooling assembly, the other side of mechanical arm is provided with spectrophotometer, one side of spectrophotometer is provided with controller, one side of controller is provided with tray, and cooling assembly, digestion instrument, spectrophotometer, controller and tray are all fixedly connected on workbench, cooling assembly, digestion instrument, mechanical arm and spectrophotometer are electrically connected with controller.

[0005] Preferably, the cooling assembly includes a bottom plate, and the bottom plate is fixedly connected to the workbench, a housing is fixedly connected to the bottom plate, a heat-conducting frame is fixedly connected in the housing, a fan is provided on one side of the heat-conducting frame, a semiconductor refrigerator is installed on both sides of the heat-conducting frame, and a water collecting tray is provided at the bottom end of the heat-conducting frame.

[0006] Preferably, a plurality of air outlet holes are uniformly distributed on the other side wall of the housing.

[0007] Preferably, a first through slot is formed in the housing, and the water collecting tray is slidingly connected in the first through slot, and a notch is formed in the first through slot.

[0008] Preferably, the heat-conducting frame comprises heat-conducting plates, first elastic plates, first grooves, second elastic plates, second grooves and second through grooves, the first elastic plates and the second elastic plates are arranged at intervals, two ends of the first elastic plates and the second elastic plates are fixedly connected to the two heat-conducting plates respectively, the heat-conducting plates are fixedly connected to the cold end of the semiconductor refrigerator, the first elastic plates are uniformly provided with the first grooves, the second elastic plates are provided with the second grooves at positions corresponding to the first grooves, and the upper surface of the shell is provided with through holes at positions corresponding to the first grooves.

[0009] Preferably, the first elastic plates and the second elastic plates are provided with the second through grooves.

[0010] The COD automatic sample loading detection system has the advantages that: the mechanical arm is used to realize the transfer of the sample test tube between stations, so that the automation and standardization of the sample loading, heating, cooling and detection processes are realized, the detection efficiency is improved, the heating and cooling time can be accurately controlled, and the accuracy of the detection result is ensured; and the cooling assembly adopts the air cooling combined with the semiconductor refrigeration technology, so that the rapid cooling of the sample test tube can be realized under the condition of low noise. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0012] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application;

[0013] Figure 2 It is a three-dimensional structure schematic diagram of the cooling assembly of the present application;

[0014] Figure 3 It is a three-dimensional sectional structure schematic diagram of the cooling assembly of the present application;

[0015] Figure 4 It is a three-dimensional structure schematic diagram of the shell of the present application;

[0016] Figure 5 It is a three-dimensional structure schematic diagram of the heat-conducting frame of the present application.

[0017] In the figure: 1, workbench; 2, cooling assembly; 21, bottom plate; 22, shell; 221, through hole; 222, air inlet hole; 223, air outlet hole; 224, first through slot; 225, notch; 226, filter screen; 227, fan; 23, water collecting tray; 24, heat conduction frame; 241, heat conduction plate; 242, first elastic plate; 243, first recess; 244, second elastic plate; 245, second recess; 246, second through slot; 25, semiconductor refrigerator; 3, digestion instrument; 4, mechanical arm; 5, spectrophotometer; 6, controller; 7, tray. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to the drawings Figure 1 - the drawings Figure 5The utility model provides an embodiment: a kind of COD automatic sample loading detection system, including workstation 1, and workstation 1 is fixedly connected with mechanical arm 4, and one side of mechanical arm 4 is provided with digestion instrument 3, and one side of digestion instrument 3 is provided with cooling assembly 2, and the other side of mechanical arm 4 is provided with spectrophotometer 5, and one side of spectrophotometer 5 is provided with controller 6, and one side of controller 6 is provided with tray 7, and cooling assembly 2, digestion instrument 3, spectrophotometer 5, controller 6 and tray 7 are all fixedly connected on workstation 1, cooling assembly 2, digestion instrument 3, mechanical arm 4 and spectrophotometer 5 are electrically connected with controller 6, cooling assembly 2 is used to carry out cooling to test tube, digestion instrument 3 is used to carry out water bath heating to test tube, mechanical arm 4 is used to realize the transfer of test tube, spectrophotometer 5 is used to determine chemical oxygen demand, controller 6 is used to control mechanical arm 4, and tray 7 is used to place test tube;Cooling assembly 2 includes bottom plate 21, and bottom plate 21 is fixedly connected on workstation 1, and bottom plate 21 is fixedly connected with shell 22, shell 22 is fixedly connected with heat conduction frame 24 in, one side of heat conduction frame 24 is provided with fan 227, and semiconductor refrigerator 25 is mounted on both sides of heat conduction frame 24, and the bottom end of heat conduction frame 24 is provided with water collecting tray 23, and bottom plate 21 is used to install shell 22 on workstation 1, shell 22 is used to support test tube, heat conduction frame 24 is used to transfer heat to semiconductor refrigerator 25, and semiconductor refrigerator 25 and fan 227 are used to cool test tube, and water collecting tray 23 is used to collect the water stain remaining on the surface of test tube after water bath heating;Air inlet hole 222 is set on the position of the outer wall of one side of shell 22 corresponding to fan 227, and filter screen 226 is fixedly connected on air inlet hole 222, and a plurality of air outlet holes 223 are uniformly distributed on the other outer wall of shell 22, and fan 227 is used to realize air cooling heat dissipation, filter screen 226 is used to prevent sundries from entering shell 22, air inlet hole 222 is used to air intake, and air outlet hole 223 is used to exhaust airflow;First through slot 224 is set on shell 22, and water collecting tray 23 is slidably connected in first through slot 224, and notch 225 is set on first through slot 224, and first through slot 224 is used to accommodate water collecting tray 23, and notch 225 is used to facilitate drawing out water collecting tray 23.The heat-conducting frame 24 comprises heat-conducting plates 241, first elastic plates 242, first grooves 243, second elastic plates 244, second grooves 245 and second through grooves 246, a plurality of first elastic plates 242 and second elastic plates 244 are arranged at intervals, two ends of the first elastic plates 242 and the second elastic plates 244 are fixedly connected to two heat-conducting plates 241 respectively, the heat-conducting plates 241 are fixedly connected to the cold end of the semiconductor refrigerator 25, a plurality of first grooves 243 are uniformly distributed on the first elastic plates 242, the second grooves 245 are arranged on the second elastic plates 244 at positions corresponding to the first grooves 243, and through holes 221 are formed on the upper surface of the shell 22 at positions corresponding to the first grooves 243, the heat-conducting plates 241, the first elastic plates 242 and the second elastic plates 244 are all used for heat transfer, the first grooves 243 and the second grooves 245 form a circular structure for accommodating the test tube, and the through holes 221 are also used for accommodating the test tube; a plurality of second through grooves 246 are formed on the first elastic plates 242 and the second elastic plates 244, and the second through grooves 246 are used for facilitating airflow circulation.

[0020] Working principle: when the utility model is used, first, the test tube containing the treated water sample is placed in the tray 7, then the controller 6 is started, the mechanical arm 4 on the workbench 1 transfers the test tube from the tray 7 to the digestion instrument 3, the digestion instrument 3 is automatically started to heat, and the heating process is timed, after the heating reaches the set time, the mechanical arm 4 transfers the test tube from the digestion instrument 3 to the cooling assembly 2, and the cooling process is timed, after the cooling reaches the set time, the mechanical arm 4 transfers the test tube from the cooling assembly 2 to the spectrophotometer 5 for detection; wherein the working process of the cooling assembly 2 is as follows: the test tube is inserted into the heat-conducting frame 24 through the through hole 221 on the shell 22, the test tube passes through the gap between the first grooves 243 and the second grooves 245, the first elastic plates 242 and the second elastic plates 244 are attached to the test tube, the fan 227 and the semiconductor refrigerator 25 are started, the airflow enters the air inlet hole 222 through the filter screen 226, and then is blown out from the air outlet hole 223 after passing through the first elastic plates 242 and the second elastic plates 244, the first elastic plates 242 and the second elastic plates 244 transfer the heat of the test tube to the heat-conducting plates 241, and the cold end of the semiconductor refrigerator 25 is used for cooling; the bottom plate 21 is used for mounting the shell 22 on the workbench 1, the first through groove 224 is used for accommodating the water collecting tray 23, the water collecting tray 23 is used for collecting the water stains remaining on the surface of the test tube after water bath heating, the notch 225 is used for facilitating the extraction of the water collecting tray 23, and the second through groove 246 is used for facilitating airflow circulation.

[0021] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "mount", "link", "connect" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the communication.For the ordinary skilled in the art, the above-mentioned terms can be understood in the specific meaning of the utility model according to the specific circumstances.

[0022] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, that is, they can be located in one place, or distributed on multiple network units.

[0023] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them;Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features;And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A COD automatic sample loading detection system comprising a workbench (1), characterized in that: The workbench (1) is fixedly connected with a mechanical arm (4), one side of the mechanical arm (4) is provided with a digestion instrument (3), one side of the digestion instrument (3) is provided with a cooling assembly (2), the other side of the mechanical arm (4) is provided with a spectrophotometer (5), one side of the spectrophotometer (5) is provided with a controller (6), one side of the controller (6) is provided with a tray (7), and the cooling assembly (2), the digestion instrument (3), the spectrophotometer (5), the controller (6) and the tray (7) are all fixedly connected on the workbench (1), and the cooling assembly (2), the digestion instrument (3), the mechanical arm (4) and the spectrophotometer (5) are electrically connected with the controller (6).

2. The COD automatic on-line sampling detection system according to claim 1, characterized in that: The cooling assembly (2) comprises a bottom plate (21), and the bottom plate (21) is fixedly connected on the workbench (1), the bottom plate (21) is fixedly connected with a shell (22), the shell (22) is fixedly connected with a heat conduction frame (24) in the shell (22), one side of the heat conduction frame (24) is provided with a fan (227), and both sides of the heat conduction frame (24) are mounted with semiconductor refrigerators (25), and the bottom end of the heat conduction frame (24) is provided with a water collecting disc (23).

3. The COD automatic sample loading detection system according to claim 2, characterized in that: The shell (22) is provided with an air inlet hole (222) on one side of the outer wall, and the air inlet hole (222) is fixedly connected with a filter screen (226), and the other side of the outer wall of the shell (22) is uniformly provided with a plurality of air outlet holes (223).

4. The COD auto-loading detection system of claim 2, wherein: The shell (22) is provided with a first through groove (224), and the water collecting disc (23) is slidably connected in the first through groove (224), and the first through groove (224) is provided with a notch (225).

5. The COD auto-sampling detection system of claim 2, wherein: The heat conduction frame (24) comprises a heat conduction plate (241), a first elastic plate (242), a first groove (243), a second elastic plate (244), a second groove (245) and a second through groove (246), a plurality of first elastic plates (242) and second elastic plates (244) are arranged at intervals, both ends of the first elastic plate (242) and the second elastic plate (244) are fixedly connected to the two heat conduction plates (241), and the heat conduction plate (241) is fixedly connected to the cold end of the semiconductor refrigerator (25), a plurality of first grooves (243) are uniformly arranged on the first elastic plate (242), a second groove (245) is arranged on the second elastic plate (244) corresponding to the position of the first groove (243), and a through hole (221) is formed on the upper surface of the shell (22) corresponding to the position of the first groove (243).

6. The COD auto-loading detection system according to claim 5, wherein: A plurality of second through grooves (246) are formed on the first elastic plate (242) and the second elastic plate (244).

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