A fully automatic pH value testing system

Abstract

The present invention provides a pH value fully automatic testing system, belonging to the field of automation equipment. It includes a test bottle tray for placing test bottles, a test bottle oscillating mechanism for oscillating the liquid in the test bottle in the test bottle tray, a pH value measuring mechanism for measuring the pH value of the liquid in the test bottle after the test bottle oscillation mechanism, a test liquid extraction mechanism for grabbing the test bottle in the test bottle tray, opening the cover, and extracting the liquid in the test bottle into the pH measuring mechanism, and a guide rail mechanism for moving the test liquid extraction mechanism. Compared with the prior art, the present invention can realize fully automatic measurement of pH value, has a high degree of intelligent automation, high testing efficiency, and can save staff time.

Description

Technical Field

[0001] The invention belongs to the field of automation equipment, and in particular relates to a fully automatic pH value testing system. Background Art

[0002] In the field of textiles, if the pH value of textiles is not up to standard, it will destroy the weakly acidic environment on the surface of human skin, causing itching, making the skin vulnerable to bacteria, and further causing symptoms such as dermatitis. Therefore, it is particularly important to test the pH value of textiles. As one of the main technical requirements in GB18401-2010 "National Basic Safety Technical Specifications for Textile Products", the pH value of textiles has become the most common test item in textile testing laboratories and clothing manufacturers. At present, the pH value of textiles is tested according to GB / T7573-2009, and the operation is relatively simple.

[0003] The test process of GB / T7573-2009 is as follows: Take a representative sample and cut it into pieces, weigh three parallel samples (2.00±0.05)g into a flask at room temperature, add 100mL of water or potassium chloride, cover the bottle stopper, shake it for a while, and then place the flask on a mechanical oscillator for 2h±5min. Collect three extracts, immerse the glass electrode in the first extract until the pH value is stable, and then immerse it in the second and third extracts to measure the pH value. The average of the second and third pH values ​​is finally used as the test result.

[0004] The pH detector is an important tool for measuring and reacting the acidity and alkalinity of a solution. It measures the pH value of a solution by potentiometric determination. The pH detector is widely used in the fields of industry, electricity, agriculture, medicine, food, scientific research and environmental protection. The instrument is also an essential inspection equipment for food factories and drinking water factories to obtain QS and HACCP certification. The precision of the pH detector is particularly important, but the existing pH detectors include glass electrodes, metal-metal oxide solid electrodes, ion selective electrodes, optical fiber pH sensors, chemically modified pH sensors, ion-sensitive field effect tube pH meters, pH enzyme sensors, liquid pH detectors, etc. These pH detectors are not sensitive, have low signal-to-noise ratios, are easily interfered by other ions, and have low detection efficiency. They cannot automatically detect the pH value of liquids in multiple solvent bottles at one time, which seriously restricts the improvement of the detection level.

[0005] In addition, the current pH value test of textiles is mainly carried out by manual operation, and the intelligent automation level is low, resulting in low test efficiency and failure to meet actual needs. In view of this, the present invention provides a pH value fully automatic test system. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a pH value fully automatic testing system, which can realize the pH value fully automatic measurement, has a high degree of intelligence and automation, high testing efficiency, and can save staff time.

[0007] The present invention is achieved through the following technical solutions:

[0008] A fully automatic pH value testing system, comprising

[0009] A test bottle tray, wherein the test bottle tray is provided with a placement slot for placing the test bottles;

[0010] A test bottle oscillating mechanism, disposed below the test bottle tray, for oscillating the liquid in the test bottle in the test bottle tray;

[0011] A pH value measuring mechanism is arranged on the side of the test bottle oscillating mechanism and is used to measure the pH value of the liquid in the test bottle after the test bottle oscillation mechanism oscillates;

[0012] A test liquid extraction mechanism, disposed above the test bottle tray and the pH value measuring mechanism, for grabbing the test bottles in the test bottle tray, opening the caps, and extracting the liquid in the test bottles into the pH measuring mechanism;

[0013] The guide rail mechanism is fixedly connected to the test liquid extraction mechanism and is used to move the test liquid extraction mechanism.

[0014] As a preferred technical solution, the guide rail mechanism is an XYZ manipulator.

[0015] As a preferred technical solution, the test bottle tray is square, and is provided with 6×6 placement slots.

[0016] As a preferred technical solution, the test bottle oscillation mechanism includes a servo motor, a rotating kit, a fisheye joint, a joint connecting rod, a connecting fixture and a receiving plate. The servo motor is arranged below the receiving plate. The rotating kit is fixedly connected to the motor shaft of the servo motor. The connecting fixture is fixed below the receiving plate. The rotating kit is transmission-connected to the connecting fixture through the fisheye joint and the joint connecting rod. A universal ball roller is arranged on the receiving plate. A slide rail is arranged at the bottom of the receiving plate. The receiving plate is slidably connected to the slide rail.

[0017] As a preferred technical solution, a thin cylinder is further provided on the side of the receiving plate.

[0018] As a preferred technical solution, the pH value measuring mechanism includes a test piece box, a disk is arranged on the test piece box, a disk oscillation mechanism is arranged below the disk, a telescopic mechanism is also arranged on the test piece box, an electrode fixing frame is fixed to the front end of the telescopic mechanism, an electrode is fixed on the electrode fixing frame, a sensor and a grating for detecting the pH value of the internal liquid of the electrode are also arranged on the test piece box, and an analysis computer is also arranged at the front end of the test piece box, and the analysis computer is electrically connected to the sensor and the grating.

[0019] As a preferred technical solution, the test liquid extraction mechanism includes a clamping part, a cover opening part and a pipetting part, and the clamping part, the cover opening part and the pipetting part are all arranged on a movable plate, and the movable plate is fixedly connected to the guide rail mechanism. The clamping part includes a clamping cylinder, a left gripper and a right gripper, and a pressure sensor is arranged between the left gripper and the right gripper. The cover opening part includes an open cover cylinder, a nozzle fixture and a vacuum suction cup, and the nozzle fixture is fixedly connected to the movable end of the open cover cylinder, and the vacuum suction cup is arranged on the nozzle fixture. The pipetting part includes a pipetting cylinder, a liquid adding head fixture and a liquid adding head, and the liquid adding head fixture is fixedly connected to the movable end of the pipetting cylinder, and the liquid adding head is fixed on the liquid adding head fixture. A liquid control valve is arranged in the liquid adding head, and an infrared sensor for positioning is also arranged on the test liquid extraction mechanism.

[0020] As a preferred technical solution, it also includes a chassis, the test bottle tray, the test bottle oscillation mechanism, the pH value measurement mechanism, the test liquid extraction mechanism and the guide rail mechanism are arranged in the chassis, and the chassis is also hinged with a switch door.

[0021] As a preferred technical solution, a touch display screen is provided at the front end of the chassis.

[0022] As a preferred technical solution, it also includes a feeding trolley for transporting the test bottle tray.

[0023] Beneficial effects:

[0024] The present invention places a test bottle pre-filled with a sample and a sample solution on a test bottle tray, then evenly oscillates the test bottle through a test bottle oscillation mechanism, grabs and opens the test bottle through a test bottle extraction mechanism, and then places the test bottle on a pH value measuring mechanism, and then the test bottle extraction mechanism extracts the liquid in the test bottle and transfers it to the electrode of the pH value measuring mechanism for pH value measurement. Through the above manner, the sample solution can be fully shaken to meet the test requirements, and automatic grabbing, automatic opening, automatic liquid extraction and automatic pH value measurement of the test bottle can be realized, thereby achieving a high degree of intelligence and automation, high test efficiency, and saving staff time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural diagram of a pH value automatic testing system;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0027] Figure 3 It is a schematic diagram of the structure of each mechanism in the chassis;

[0028] Figure 4 It is the specific structural diagram of the oscillation mechanism of the test bottle;

[0029] Figure 5 for Figure 4 The structural diagram at the bottom;

[0030] Figure 6 This is a detailed structural diagram of the pH value measurement mechanism;

[0031] Figure 7 for Figure 6 The rear structural diagram;

[0032] Figure 8 is a structural schematic diagram of a test liquid extraction mechanism;

[0033] Fig. 9 for Figure 8 Detailed structural diagram of the clamping part;

[0034] Fig.10 for Figure 8 Detailed structural diagram of the middle opening part.

[0035] 100, test bottle tray; 101, placement slot; 200, test bottle oscillation mechanism; 201, servo motor; 202, rotation kit; 203, fisheye joint; 204, joint connecting rod; 205, connection hardware; 206, receiving plate; 207, universal ball roller; 208, slide rail; 209, thin cylinder; 300, pH value measurement mechanism; 301, test piece box; 302, plate; 303, plate oscillation mechanism; 304, telescopic mechanism; 305, electrode fixing frame; 306, electrode; 307, grating; 308, analysis and calculation machine; 400, test liquid extraction mechanism; 401, moving plate; 402, clamping part; 4021, clamping cylinder; 4022, left gripper; 4023, right gripper; 403, cover opening part; 4031, cover opening cylinder; 4032, nozzle firmware; 4033, vacuum suction cup; 404, liquid transfer part; 4041, liquid transfer cylinder; 4042, liquid adding head firmware; 4043, liquid adding head; 4044, liquid control valve; 500, guide rail mechanism; 600, chassis; 601, door opening and closing; 602, touch display screen; 700, feeding trolley. DETAILED DESCRIPTION

[0036] In order to further explain the technical solution of the present invention, a pH value automatic testing system is clearly and completely explained below in conjunction with the accompanying drawings.

[0037] It should be noted that the terms such as "within", "in" and "one" etc. cited in this specification are only for the convenience of description and are not used to limit the scope of the present invention. Changes or adjustments in their relative relationships, without substantially changing the technical content, should also be regarded as the scope of the present invention, and it is necessary to make it clear in advance.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0039] Example:

[0040] Please refer to the attached Figures 1 to 3 The present invention provides a pH value automatic testing system, comprising:

[0041] A test bottle tray 100, wherein the test bottle tray 100 is provided with placement slots 101 for placing test bottles; in the present embodiment, the test bottle tray 100 is square, and is provided with 6×6 placement slots 101 for placing 36 test bottles; in the present embodiment, two test bottle trays 100 are provided; it should be noted that the test bottles contain samples to be tested and sample solutions;

[0042] The test bottle oscillating mechanism 200 is disposed below the test bottle tray 100 and is used to oscillate the liquid in the test bottle in the test bottle tray 100. Through the action of the test bottle oscillating mechanism 200, the sample to be tested and the sample solution can be uniformly distributed during the oscillation process. In this embodiment, two test bottle oscillating mechanisms 200 are provided corresponding to the number of test bottle trays 100.

[0043] The pH value measuring mechanism 300 is arranged on the side of the test bottle oscillating mechanism 200 and is used to measure the pH value of the liquid in the test bottle after the test bottle oscillating mechanism 200 oscillates. The pH value measuring mechanism 300 is used to measure the pH value of the solution in the test bottle after the oscillation is uniform;

[0044] The test liquid extraction mechanism 400 is disposed above the test bottle tray 100 and the pH value measuring mechanism 300, and is used to grab the test bottles in the test bottle tray 100, open the caps, and extract the liquid in the test bottles into the pH measuring mechanism;

[0045] The guide rail mechanism 500 is fixedly connected to the test liquid extraction mechanism 400 and is used to move the test liquid extraction mechanism 400 .

[0046] Specifically, the guide rail mechanism 500 is an XYZ manipulator, which is a common structure currently available on the market and can perform displacement in the X-axis, Y-axis, and Z-axis directions, which will not be described in detail here.

[0047] For details, please refer to the attached Figure 4 and 5 The test bottle oscillation mechanism 200 includes a servo motor 201, a rotating kit 202, a fisheye joint 203, a joint connecting rod 204, a connecting piece 205 and a receiving plate 206. The servo motor 201 is arranged below the receiving plate 206. The rotating kit 202 is fixedly connected to the motor shaft of the servo motor 201. The connecting piece 205 is fixed below the receiving plate 206. The rotating kit 202 is connected to the connecting piece 205 through the fisheye joint 203 and the joint connecting rod 204. The receiving plate 206 is 06 is provided with a universal ball roller 207, and a slide rail 208 is provided at the bottom of the receiving plate 206. The receiving plate 206 is slidably connected to the slide rail 208. When the test bottle tray 100 containing the test bottle is placed on the universal ball roller 207, the servo motor 201 is started, and the servo motor 201 drives the rotating kit 202 to rotate, and the rotating kit 202 is then transmitted to the receiving plate 206 through the fisheye joint 203, the joint connecting rod 204 and the connecting fixture 205, so that the receiving plate 206 moves back and forth on the slide rail 208, thereby causing the test bottle to oscillate.

[0048] Specifically, a thin cylinder 209 is further disposed on the side of the receiving plate 206 , and the thin cylinder 209 and the test bottle oscillation mechanism 200 move synchronously to achieve a better oscillation effect of the test bottle.

[0049] For details, please refer to the attached Figure 6 and 7The pH value measuring mechanism 300 includes a test piece box 301, a disk 302 is arranged on the test piece box 301, and the disk 302 can be deflected 45 degrees to the left. A disk oscillation mechanism 303 is arranged below the disk 302. It should be noted that the structure of the disk oscillation mechanism 303 is the same as the structure of the test bottle oscillation mechanism 200, which will not be repeated here. The test piece box 301 is also provided with a telescopic mechanism 304, which is mainly used to shake the electrode 306. The telescopic mechanism 304 is composed of three cylinders, which extend and retract in sequence. The front end of the telescopic mechanism 304 is fixed with an electrode fixing frame 305, which is composed of the cylinders. The reciprocating movement of the extension and reciprocation drives the electrode fixing frame 305 to adjust the position of the electrode 306 or shake it evenly. The electrode 306 is fixed on the electrode fixing frame 305, and the electrode 306 is used to hold the pH reagent and receive the liquid to be tested; the test piece box 301 is also provided with a sensor and a grating 307 for detecting the pH value of the internal liquid of the electrode 306, and the front end of the test piece box 301 is also provided with an analysis computer 308, and the analysis computer 308 is electrically connected to the sensor and the grating 307. The sensor and the grating 307 can compare the color of the solution in the electrode 306 and form a corresponding pH value to feed back to the analysis computer 308.

[0050] For details, please refer to the attached Figure 8 , Attachment Fig. 9 and attached Fig.10 The test liquid extraction mechanism 400 includes a clamping part 402, a cover opening part 403 and a liquid transfer part 404, which are all arranged on a movable plate 401, and the movable plate 401 is fixedly connected to the guide rail mechanism 500. The clamping part 402 is used to clamp the test bottle after uniform oscillation, the cover opening part 403 is used to open the cover of the test bottle, and the liquid transfer part 404 is used to transfer the liquid in the test bottle to the electrode 306 to mix with the pH reagent. The test liquid extraction mechanism 400 is moved by the guide rail mechanism 500 as a whole;

[0051] The clamping part 402 includes a clamping cylinder 4021, a left gripper 4022 and a right gripper 4023, a pressure sensor is provided between the left gripper 4022 and the right gripper 4023, the test bottle is clamped by the left gripper 4022 and the right gripper 4023, and the pressure sensor is used to detect whether the test bottle is clamped;

[0052] The cover opening part 403 includes a cover opening cylinder 4031, a nozzle fixture 4032 and a vacuum suction cup 4033. The nozzle fixture 4032 is fixedly connected to the movable end of the cover opening cylinder 4031. The vacuum suction cup 4033 is arranged on the nozzle fixture 4032. After the clamping part 402 is clamped, the cover opening cylinder 4031 presses down, and the cover on the test bottle is opened through the vacuum suction cup 4033. After opening, the cover is placed on the tray body 302;

[0053] The pipetting part 404 includes a pipetting cylinder 4041, a dosing head fixture 4042 and a dosing head 4043. The dosing head fixture 4042 is fixedly connected to the movable end of the pipetting cylinder 4041, and the dosing head 4043 is fixed on the dosing head fixture 4042. A liquid control valve 4044 is arranged in the dosing head 4043. The test liquid extraction mechanism 400 is also provided with an infrared sensor for positioning. After the test bottle on the disk 302 is positioned by the infrared sensor, the pipetting cylinder 4041 is pressed down, the dosing head 4043 is extended into the test bottle, the liquid control valve 4044 is opened, a part of the internal liquid is sucked, and then transferred to the electrode 306. After being mixed with the PH reagent in the electrode 306, it is irradiated and measured by the grating 307, and the sensor records and feeds back to the analysis computer 308.

[0054] For details, please refer to the attached Figure 1 and attached Figure 2 This embodiment also includes a chassis 600, the test bottle tray 100, the test bottle oscillation mechanism 200, the pH value measurement mechanism 300, the test liquid extraction mechanism 400 and the guide rail mechanism 500 are arranged in the chassis 600, and the chassis 600 is also hinged with a switch door 601.

[0055] Specifically, a touch screen 602 is disposed at the front end of the chassis 600 , and the touch screen 602 is used for centralized control and program writing.

[0056] Specifically, the present embodiment further includes a feeding trolley 700 for transporting the test bottle tray 100 , and the feeding trolley 700 is used to transport the test bottles to be inspected.

[0057] The present invention places a test bottle pre-filled with a sample and a sample solution on a test bottle tray 100, then oscillates the test bottle evenly through a test bottle oscillating mechanism 200, grabs and opens the test bottle through a test bottle extracting mechanism, places the test bottle on a pH value measuring mechanism 300, and then uses the test bottle extracting mechanism to extract the liquid in the test bottle and transfers it to an electrode 306 of the pH value measuring mechanism 300 for pH value measurement. In the above manner, the sample solution can be fully shaken to meet the test requirements, and automatic grabbing, automatic opening, automatic liquid extraction and automatic pH value measurement of the test bottle can be realized, thereby achieving a high degree of intelligence and automation, high test efficiency, and saving staff time.

[0058] The present invention is not limited to the above-mentioned embodiments. If various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, and if these modifications and variations fall within the scope of the claims of the present invention and equivalent technologies, the present invention also includes these modifications and variations.

Claims

1. A fully automatic pH value testing system, characterized by: include A test bottle tray, wherein the test bottle tray is provided with a placement slot for placing the test bottles; A test bottle oscillating mechanism, disposed below the test bottle tray, for oscillating the liquid in the test bottle in the test bottle tray; A pH value measuring mechanism is arranged on the side of the test bottle oscillating mechanism and is used to measure the pH value of the liquid in the test bottle after the test bottle oscillation mechanism oscillates; A test liquid extraction mechanism is disposed above the test bottle tray and the pH value measuring mechanism, and is used to grab the test bottles in the test bottle tray, open the caps, and then extract the liquid in the test bottles into the pH value measuring mechanism; A guide mechanism, fixedly connected to the test liquid extraction mechanism, and used to move the test liquid extraction mechanism; The test liquid extraction mechanism includes a clamping part, a cover opening part and a liquid transfer part, the clamping part includes a clamping cylinder, a left gripper and a right gripper, a pressure sensor is arranged between the left gripper and the right gripper, the cover opening part includes a cover opening cylinder, a nozzle fixture and a vacuum suction cup, the liquid transfer part includes a liquid transfer cylinder, a liquid adding head fixture and a liquid adding head, the liquid transfer part also includes a liquid control valve, and the test liquid extraction mechanism is also provided with an infrared sensor for positioning; The pH value measuring mechanism includes a test piece box, a disk is arranged on the test piece box, the disk can be deflected by 45 degrees, a disk oscillation mechanism is arranged below the disk, and a telescopic mechanism is also arranged on the test piece box, the telescopic mechanism is composed of three cylinders, and the three cylinders are extended in sequence to be telescoped, and an electrode fixing frame is fixed to the front end of the telescopic mechanism, and an electrode is fixed on the electrode fixing frame.

2. The pH value fully automatic testing system according to claim 1 is characterized in that: The guide rail mechanism is an XYZ manipulator.

3. The pH value fully automatic testing system according to claim 1 is characterized in that: The test bottle tray is square and is provided with 6×6 placement slots.

4. The pH value fully automatic testing system according to claim 1 is characterized in that: The test bottle oscillation mechanism includes a servo motor, a rotating kit, a fisheye joint, a joint connecting rod, a connecting fixture and a receiving plate. The servo motor is arranged below the receiving plate. The rotating kit is fixedly connected to the motor shaft of the servo motor. The connecting fixture is fixed below the receiving plate. The rotating kit is transmission-connected to the connecting fixture through the fisheye joint and the joint connecting rod. A universal ball roller is arranged on the receiving plate. A slide rail is arranged at the bottom of the receiving plate. The receiving plate is slidably connected to the slide rail.

5. The pH value fully automatic testing system according to claim 4 is characterized in that: A thin cylinder is also arranged on the side of the receiving plate.

6. The pH value fully automatic testing system according to claim 1 is characterized in that: The test piece box is also provided with a sensor and a grating for detecting the pH value of the internal liquid of the electrode, and the front end of the test piece box is also provided with an analysis computer, and the analysis computer is electrically connected to the sensor and the grating.

7. The pH value fully automatic testing system according to claim 1 is characterized in that: The clamping part, the cover opening part and the pipetting part are all arranged on a movable plate, the movable plate is fixedly connected to the guide rail mechanism, the suction nozzle fixture is fixedly connected to the movable end of the cover opening cylinder, the vacuum suction cup is arranged on the suction nozzle fixture, the liquid adding head fixture is fixedly connected to the movable end of the pipetting cylinder, the liquid adding head is fixed on the liquid adding head fixture, and a liquid control valve is arranged in the liquid adding head.

8. The pH value fully automatic testing system according to claim 1 is characterized in that: It also includes a chassis, in which the test bottle tray, the test bottle oscillating mechanism, the pH value measuring mechanism, the test liquid extracting mechanism and the guide rail mechanism are arranged, and the chassis is also hinged with a switch door.

9. The pH value fully automatic testing system according to claim 8, characterized in that: The front end of the chassis is provided with a touch display screen.

10. The pH value automatic testing system according to claim 8, characterized in that: Also included is a feeding trolley for transporting the test bottle tray.

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