PH detection device

Abstract

The utility model relates to the technical field of detection, in particular to a pH (Potential of Hydrogen) detection device, which comprises a frame, a pH detector and a pH detector, the detection mechanism comprises a horizontal moving assembly and a detection assembly, the horizontal moving assembly is arranged on the workbench, the detection assembly is arranged on the horizontal moving assembly, and the detection assembly comprises a pH electrode connected to a pH detector; the sample receiver is arranged on the workbench, and the sample receiver is provided with a receiving cavity for accommodating a sample bottle; the cleaning device is used for cleaning the pH electrode; under the moving action of the horizontal moving assembly, the pH electrode can move between a detection position adapted to the sample receiver and a cleaning position adapted to the cleaning device. The scheme is used for solving the defect of low efficiency caused by the fact that quality detection of dairy products before delivery depends on manual operation in the prior art, automatic detection of the pH value of the dairy products is realized, and the detection efficiency and accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of detection, in particular to a pH detection device. Background Art

[0002] In contemporary society, dairy products have become an indispensable part of the daily diet of most families, and their quality is directly related to the health and safety of consumers. Therefore, ensuring that dairy products meet high-standard quality requirements before leaving the factory is a key link in the entire industrial chain. As an important indicator for measuring the freshness, safety, and flavor of dairy products, the pH value is indispensable for conventional detection, which directly affects the stability of the product and the acceptance of consumers. Traditionally, this detection process highly relies on the operation of skilled experimental personnel, and professional instruments such as pH meters are used to measure milk, cheese, yogurt, etc. one by one.

[0003] However, with the continuous expansion of the scale of the dairy industry and the rapid growth of market demand, the inspection tasks on the production line are becoming increasingly heavy, and the detection items are also becoming more diverse, ranging from microbial content, component analysis to physical property evaluation, etc. Limited by the finiteness of human resources, the traditional detection method gradually shows an efficiency bottleneck. It not only takes a long time and has high costs, but also is difficult to adapt to the fast-paced market rhythm. Sometimes, it even affects the market launch speed of products and the operation efficiency of enterprises due to inspection delays. Content of the Utility Model

[0004] The utility model provides a pH detection device to solve the defect of low efficiency caused by the dependence on manual operation in the quality detection of dairy products before leaving the factory in the prior art, realize the automatic detection of the pH value of dairy products, and improve the inspection efficiency and accuracy.

[0005] The utility model provides a pH detection device, including: a frame, the upper surface of the frame is used as a workbench; a detection mechanism, including a horizontal movement component and a detection component, the horizontal movement component is arranged on the workbench, the detection component is arranged on the horizontal movement component, and the detection component includes a pH electrode connected to a pH detector; a sample receiver, arranged on the workbench, the sample receiver has a receiving cavity for accommodating a sample bottle; a cleaning device, used for cleaning the pH electrode; under the movement of the horizontal movement component, the pH electrode can move between a detection position adapting to the sample receiver and a cleaning position adapting to the cleaning device.

[0006] According to a pH detection device provided by the utility model, on the workbench, a storage tube is arranged between the sample receiver and the cleaning device, and a pH meter calibration solution is filled in the storage tube; and / or, on the workbench, a storage tube is arranged between the sample receiver and the cleaning device, and a pH meter immersion solution is filled in the storage tube.

[0007] A pH detection device provided by the present utility model, the detection assembly includes a vertical driver and a lifting plate; one end of the lifting plate is installed on the driving end of the vertical driver, so that the vertical driver drives the lifting plate to perform a lifting action, and the pH electrode is installed at the other end of the lifting plate.

[0008] A pH detection device provided by the present utility model, the vertical driver is a cylinder, and a guide rod parallel to the cylinder rod is provided between the vertical driver and the lifting plate.

[0009] A pH detection device provided by the present utility model, the horizontal movement assembly includes a slide table box and a servo driver; the slide table box is provided with a slide table that can slide in the horizontal direction and a transmission assembly that is in transmission cooperation between the slide table and the servo driver; the vertical driver is installed on the slide table.

[0010] A pH detection device provided by the present utility model, the workbench is provided with a long opening for accommodating at least a part of the vertical driver.

[0011] A pH detection device provided by the present utility model, the slide table box is provided with at least one position sensor for detecting the position of the slide table.

[0012] A pH detection device provided by the present utility model, the horizontal cross-sectional shape of at least one side of the receiving cavity is stepped to adapt to sample bottles with various horizontal cross-sectional shapes.

[0013] A pH detection device provided by the present utility model, the side wall of the sample receiver is provided with an observation window, and a photoelectric sensor is arranged outside the observation window.

[0014] A pH detection device provided by the present utility model, the cleaning device is provided with a tubular cleaning cavity for accommodating the pH electrode, and the tubular cleaning cavity is connected with a cleaning liquid pipeline and / or a blowing pipeline.

[0015] The pH detection device provided by the present utility model aims to overcome the bottleneck of manual operation in traditional dairy product pH detection through an integrated mechanical design and an automated operation process, realizing the automation and high efficiency of the detection process, and significantly improving the detection efficiency and the accuracy of the results. Among them, the horizontal movement assembly is installed on the workbench and can move in the horizontal direction, while the detection assembly is fixed on it and contains a pH electrode connected to a pH detector for directly measuring the pH value of the sample. The horizontal movement assembly enables the pH electrode to automatically move between the detection position (docking with the sample receiver for measurement) and the cleaning position (being cleaned by the cleaning device) without manual intervention, greatly improving the continuity and efficiency of the detection. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the pH detection device provided by the present invention.

[0018] Reference Numerals:

[0019] 10, workbench; 11, specimen receptacle; 111, observation window; 12, cleaning device; 121, tubular cleaning cavity; 13, temporary storage tube; 14, storage tube; 15, long opening; 20, horizontal movement assembly; 21, sliding table box; 22, servo driver; 30, detection assembly; 31, pH electrode; 32, vertical driver; 33, lifting plate; 34, guide rod. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0021] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of 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 thus should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The following will Figure 1 describe the specific implementation manners of the pH detection device of the present utility model.

[0023] The present utility model provides a pH detection device, which is used to realize the automation of pH value detection, reduce manual intervention, and improve the detection speed and reliability. The pH detection device includes: a frame, the upper surface of the frame is used as a workbench 10; a detection mechanism, including a horizontal movement component 20 and a detection component 30, the horizontal movement component 20 is arranged on the workbench 10, the detection component 30 is arranged on the horizontal movement component 20, and the detection component 30 includes a pH electrode 31 connected to a pH detector; a sample receiver 11, arranged on the workbench 10, and the sample receiver 11 has a receiving cavity for accommodating a sample bottle; a cleaning device 12, used to clean the pH electrode 31; under the movement action of the horizontal movement component 20, the pH electrode 31 can move between a detection position adapted to the sample receiver 11 and a cleaning position adapted to the cleaning device 12.

[0024] Specifically, the frame serves as a basic support structure, and its upper surface is used as the workbench 10, facilitating the setting of various components. The detection mechanism is divided into two parts - the horizontal movement component 20 and the detection component 30. The horizontal movement component 20 is installed on the workbench 10, and the detection component 30 is fixed thereon and can move horizontally. The detection component 30 contains a pH electrode 31 connected to a pH detector, which is used to directly measure the pH value of a sample. The sample receiver 11 is located on the workbench 10 and is provided with a dedicated receiving cavity for accommodating a dairy product sample bottle to be tested. Keeping the detection element clean is the key to ensuring the accuracy of the detection result. The cleaning device 12 equipped in this device can clean the pH electrode 31 and remove residual substances that may affect the measurement result. The horizontal movement component 20 enables the pH electrode 31 to automatically move between the detection position (docking with the sample receiver 11 for measurement) and the cleaning position (being cleaned by the cleaning device 12) without manual intervention, greatly improving the detection continuity and efficiency.

[0025] The above-mentioned frame is preferably made of aluminum alloy material. As a lightweight and high-strength metal material, aluminum alloy not only has good corrosion resistance, but also has excellent processing performance, is easy to form and process, and is suitable for constructing a stable and lightweight support structure. A cavity for setting valves or other control components can be formed inside the frame, so as to keep the overall external layout of the device neat. In addition, to solve the problems of cable and pipeline management, it is preferable to configure a cable and pipeline drag chain on the side of the frame. Through the drag chain, various lines and pipelines required for the operation of the device can be orderly stored therein, which not only avoids the messy exposure of cables, reduces potential safety hazards at the work site, but also maintains the neat appearance and professional image of the equipment. The design of the drag chain allows the internal lines or pipelines to flexibly stretch with the movement of the device, without restricting the operation range of the device, ensuring the smooth linkage of each component during the detection process, such as the horizontal movement of the detection component 30 controlled by the horizontal movement component 20.

[0026] According to a pH detection device provided by the present utility model, on the workbench 10, a temporary storage tube 13 is arranged between the sample receiver 11 and the cleaning device 12, and a pH meter calibration solution is contained in the temporary storage tube 13; and / or, on the workbench 10, a storage tube 14 is arranged between the sample receiver 11 and the cleaning device 12, and a pH meter immersion solution is contained in the storage tube 14.

[0027] Among them, the role of the calibration solution is to ensure the accuracy of the measurement of the pH electrode 31. Because after long-term use or testing with different samples, the electrode may drift, affecting the measurement result. By automatically immersing the pH electrode 31 briefly in the calibration solution, the electrode can be calibrated regularly to ensure that the pH value measured each time is accurate and reliable. By arranging the temporary storage tube 13 between the sample receiver 11 and the cleaning device 12, the device not only realizes the automation of detection, but also incorporates a self-calibration mechanism, greatly improving the accuracy of detection and the stability of the system.

[0028] The storage tube 14 is filled with a pH meter immersion solution. When the detection period is intermittent or after the detection is completed, the pH electrode 31 can be automatically moved to the storage tube 14 for immersion to maintain the best working state of the electrode. The immersion solution helps to remove impurities that may be adsorbed on the surface of the electrode, prevent the aging of the electrode, and extend its service life.

[0029] According to a pH detection device provided by the present utility model, the detection assembly 30 includes a vertical driver 32 and a lifting plate 33; one end of the lifting plate 33 is installed at the driving end of the vertical driver 32, so that the vertical driver 32 drives the lifting plate 33 to perform lifting actions, and the pH electrode 31 is installed at the other end of the lifting plate 33. Specifically, the vertical driver 32 in the detection assembly 30 can provide a driving force in the vertical direction, such as using an electric push rod or a screw-type lifting mechanism. The main body of the vertical driver 32 can perform horizontal movement actions under the drive of the horizontal movement assembly 20, and its driving end is engaged with the lifting plate 33. By issuing an instruction through the control system, the vertical driver 32 can control the lifting plate 33 to move up and down along the vertical direction. The lifting plate 33 serves as a platform for carrying the pH electrode 31, and one end of it is closely connected to the vertical driver 32, ensuring that the electrode accurately adjusts its position as the lifting plate 33 moves up and down.

[0030] In practical applications, the horizontal movement assembly 20 serves as the foundation and is responsible for driving the entire vertical driver 32 and the mounted lifting plate 33 to slide horizontally along the workbench 10. At the same time, the vertical driver 32 controls the lifting plate 33 to complete necessary up and down movements to adapt to sample bottles of different heights or perform in-depth cleaning and calibration operations on the pH electrode 31. Through the coordinated work of the horizontal movement assembly 20 and the vertical driver 32, the pH electrode 31 can be flexibly and accurately positioned in three-dimensional space, and it can easily achieve spanning multiple detection points on the workbench 10 or making depth adjustments for a single detection point.

[0031] According to a pH detection device provided by the present utility model, the vertical driver 32 is a cylinder, and a guide rod 34 parallel to the cylinder rod is provided between the vertical driver 32 and the lifting plate 33. The cylinder drives the piston rod (cylinder rod) to move up and down through the change of the internal gas pressure, thereby driving the connected lifting plate 33 to achieve precise vertical lifting actions. To further enhance the stability and guiding property of the device, the guide rod 34 provides a stable guiding path for the up and down movement of the lifting plate 33, avoiding shaking or deviation, and ensuring the smoothness and accuracy of the lifting actions. The guide rod 34 can be fixed to either the vertical driver 32 or the lifting plate 33 and is slidably matched with the other.

[0032] According to a pH detection device provided by the present utility model, the horizontal movement assembly 20 preferably includes a slide table box 21 and a servo driver 22; the slide table box 21 is provided with a slide table that can slide in the horizontal direction and a transmission assembly that is in transmission cooperation between the slide table and the servo driver 22; the vertical driver 32 is installed on the slide table. Specifically, the slide table box 21 is provided with a slide table that can freely slide in the horizontal direction, allowing the detection assembly 30 installed on the slide table to freely move transversely along the workbench 10 to cover the horizontal positions of all preset detection points. The slide table is connected to the servo driver 22 through a transmission assembly, and this transmission assembly plays a bridging role to ensure that power is efficiently and accurately transmitted from the servo driver 22 to the slide table.

[0033] Preferably, the servo driver 22 is a servo motor, and the servo motor is connected to a screw through a coupling integrated inside the slide table box 21. When the servo motor starts and rotates, through the transmission of the coupling, the screw starts to rotate, and then through the cooperation of the nut and the slide table, the slide table is pushed to move smoothly and precisely in the horizontal direction.

[0034] According to a pH detection device provided by the present utility model, the workbench 10 is provided with a long opening 15 for accommodating at least a part of the vertical driver 32, thereby further optimizing the space utilization rate and enhancing the compactness and practicality of the overall device. When the vertical driver 32 moves in the horizontal direction along with the slide table. Since the vertical driver 32 is directly installed on the slide table and slides on the surface of the workbench 10 together with the slide table, if the vertical driver 32 is completely located above the workbench 10, it will increase the height of the entire device and occupy more vertical space. By "embedding" a part of the vertical driver 32 through the long opening 15 on the workbench 10, in essence, a part of the vertical driver 32 is "hidden" inside the workbench 10, and it will not additionally increase the total height of the device, thus effectively reducing the space occupied in the vertical direction.

[0035] According to a pH detection device provided by the present utility model, the slide table box 21 is provided with at least one position sensor for detecting the position of the slide table. Preferably, the position sensor can be arranged at both ends of the slide table box 21 to monitor the extreme positions of the slide table in the horizontal direction in real time. When the slide table approaches the starting point or the end point of its stroke, the control system can immediately receive the signal and make a response, and timely stop the drive of the servo driver 22, avoiding the risk of overshoot or collision. It can be understood that the above position sensors can be correspondingly set at the detection positions and cleaning positions on the horizontal movement path of the corresponding detection assembly 30, as well as at the positions corresponding to the temporary storage tube 13 and the storage tube 14, so as to achieve precise movement on the horizontal movement path. The position sensor preferably can adopt a groove type photoelectric inductor.

[0036] The sample receptacle 11 can adopt a load-bearing design with multiple specifications and different diameters to accommodate sample bottles of various specifications. According to a pH detection device provided by the present utility model, the horizontal cross-sectional shape on at least one side of the receiving cavity is preferably stepped to adapt to sample bottles with various horizontal cross-sectional shapes. By designing the edge of the receiving cavity into a stepped horizontal tabletop, it is equivalent to creating multiple receiving positions for sample bottles of different sizes inside a single receiving cavity, which can ensure that sample bottles of various specifications are satisfied and are in limit cooperation with the corresponding steps of the receiving cavity, thereby effectively fixing the sample bottle.

[0037] According to a pH detection device provided by the present utility model, an observation window 111 is provided on the side wall of the sample receptacle 11, and a photoelectric sensor is preferably provided outside the observation window 111 to determine whether a sample bottle is placed in the receiving cavity. When the photoelectric sensor detects that a sample bottle is placed, it can send a signal to the control system to trigger subsequent detection processes, such as automatically adjusting the position of the pH electrode 31 for sample detection, or preventing the start of the detection program when no sample bottle is detected, avoiding the risks of idling or misoperation. The photoelectric sensor is preferably a diffuse reflection type photoelectric sensor, and it does not need to be aligned with the reflecting surface, and has a high tolerance for the placement position and angle of the sample bottle.

[0038] According to a pH detection device provided by the present utility model, the cleaning device 12 is provided with a tubular cleaning cavity 121 for accommodating the pH electrode 31, and the tubular cleaning cavity 121 is connected with a cleaning liquid pipeline and / or a blowing pipeline. The design of the cleaning device 12 not only provides a dedicated cleaning space for the electrode, but also realizes the automatic cleaning and drying treatment of the electrode through the integrated cleaning liquid pipeline and / or blowing pipeline. The cleaning liquid pipeline is connected to the cleaning cavity and can deliver an appropriate amount of cleaning liquid (usually a buffer solution suitable for maintaining the material and sensitive film of the pH electrode 31) to quickly remove possible residual sample substances or precipitates on the electrode surface and restore the initial response performance of the electrode. The introduction of the blowing pipeline is to use compressed air or inert gas to dry the electrode after the cleaning process.

[0039] Preferably, a dedicated pipeline system is configured below the cleaning device 12 to collect and discharge the cleaning waste liquid. During the cleaning process, the used cleaning liquid (which may contain sample residues) is smoothly discharged through the connecting pipeline at the bottom of the tubular cleaning cavity 121, avoiding the accumulation of waste liquid in the cleaning cavity and reducing the risk of cross-contamination for the next cleaning or detection.

[0040] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or mode are included in at least one embodiment or mode of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or modes. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or equivalently replace some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A pH detection device, characterized in that, Comprising: A frame, the upper surface of which serves as a workbench (10); A detection mechanism, including a horizontal movement component (20) and a detection component (30), the horizontal movement component (20) is arranged on the workbench (10), the detection component (30) is arranged on the horizontal movement component (20), and the detection component (30) includes a pH electrode (31) connected to a pH detector; A sample receptacle (11), arranged on the workbench (10), and the sample receptacle (11) has a receiving cavity for receiving a sample bottle; A cleaning device (12) for cleaning the pH electrode (31); Under the movement action of the horizontal movement component (20), the pH electrode (31) can move between a detection position adapted to the sample receptacle (11) and a cleaning position adapted to the cleaning device (12).

2. The pH detection device according to claim 1, wherein On the workbench (10), a temporary storage tube (13) is arranged between the sample receptacle (11) and the cleaning device (12), and a pH meter calibration solution is contained in the temporary storage tube (13); And / or, on the workbench (10), a storage tube (14) is arranged between the sample receptacle (11) and the cleaning device (12), and a pH meter soaking solution is contained in the storage tube (14).

3. The pH detection device according to claim 1, characterized in that, The detection component (30) includes a vertical driver (32) and a lifting plate (33); One end of the lifting plate (33) is installed at the driving end of the vertical driver (32), so that the vertical driver (32) drives the lifting plate (33) to perform a lifting action, and the pH electrode (31) is installed at the other end of the lifting plate (33).

4. The pH detection device according to claim 3, characterized in that, The vertical driver (32) is a cylinder, and a guide rod (34) parallel to the cylinder rod is arranged between the vertical driver (32) and the lifting plate (33).

5. The pH detection device according to claim 3, wherein The horizontal movement component (20) includes a slide box (21) and a servo driver (22); The slide box (21) is provided with a slide that can slide in the horizontal direction and a transmission component that is in transmission cooperation between the slide and the servo driver (22); The vertical driver (32) is installed on the slide.

6. The pH detection device according to claim 5, wherein, The workbench (10) is provided with a long opening (15) for accommodating at least a part of the vertical driver (32).

7. The pH detection device according to claim 5, wherein The slide box (21) is provided with at least one position sensor for detecting the position of the slide.

8. The pH detection device according to any one of claims 1-7, characterized in that, The horizontal cross-sectional shape of at least one side of the receiving cavity is stepped to adapt to sample bottles with various horizontal cross-sectional shapes.

9. The pH detection device according to any one of claims 1-7, characterized in that, A side wall of the sample receptacle (11) is provided with an observation window (111), and a photoelectric sensor is arranged outside the observation window (111).

10. The pH detection device according to any one of claims 1-7, characterized in that, The cleaning device (12) is provided with a tubular cleaning cavity (121) for accommodating the pH electrode (31), and the tubular cleaning cavity (121) is connected with a cleaning liquid pipeline and / or a blowing pipeline.

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