A portable alkalinity detection device based on phenolphthalein color reaction

Abstract

The utility model relates to detection device technical field, and disclose a kind of portable alkaline detection device based on phenolphthalein color reaction, to solve the problem that the existing need first dissolving lubricating grease sample, cumbersome operation, liquid reagent is inconvenient to carry, easy to leak or failure. The portable alkaline detection device based on phenolphthalein color reaction, whether the components of the inspection device is intact, ensure that phenolphthalein solid-state slide has been correctly clamped in the clamping groove A, open detection box, carefully put into the sample to be detected into reaction cavity, attention not to exceed the maximum capacity of reaction cavity, connecting plate and detection box upper end clamping connection good, ensure that connection is firm, by adjusting the length of telescopic link, phenolphthalein solid-state slide slowly drops, until and the sample in reaction cavity are in full contact, observe the color change of phenolphthalein solid-state slide, if sample is alkaline, phenolphthalein solid-state slide can be colorless to red, and the stronger alkalinity, the more obvious color change, simplify operation and improve efficiency.

Description

Technical Field

[0001] This utility model relates to the field of detection device technology, and in particular to a portable alkaline detection device based on phenolphthalein colorimetric reaction. Background Technology

[0002] A portable alkalinity detection device based on the phenolphthalein colorimetric reaction utilizes phenolphthalein as a colorimetric indicator. Through the chemical reaction principle of phenolphthalein reacting with alkaline substances to produce a characteristic color change (colorless to red), this device is designed and manufactured to be portable, easy to operate, and capable of quickly and qualitatively or semi-quantitatively detecting alkaline components or alkalinity in target samples. Such devices are widely used in daily life, such as detecting water quality, the alkalinity of cleaning agents, food processing (such as detecting the alkalinity of ingredients or semi-finished products), and environmental monitoring (such as simple soil alkalinity detection), highlighting the advantages of "fast, convenient, and low cost".

[0003] Existing technology, Chinese Patent Publication No. CN221686367U, discloses a soil pH testing device for landscaping projects, relating to the field of soil pH testing devices. This soil pH testing device for landscaping projects includes a testing body and an insertion rod installed at the bottom of the testing body. The insertion rod is used to insert into the soil. A screen is provided on the surface of the testing body for displaying the test results. A collection and cleaning mechanism is provided below the testing body to collect and clean the insertion rod. The collection and cleaning mechanism includes a collection and cleaning tube; a cleaning block is provided inside the collection and cleaning tube; and a collection cover is provided on the top of the collection and cleaning tube. When using this soil pH testing device for landscaping projects, the user holds and rotates the knob, causing the knob to rotate around the insertion rod, thereby allowing the cleaning block to clean the soil and other debris from the outer wall of the insertion rod.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: Traditional phenolphthalein detection requires separate preparation of reagents for titration, which requires dissolving the grease sample first, making the operation cumbersome, and the liquid reagents are inconvenient to carry and prone to leakage or failure. Utility Model Content

[0005] The technical problem to be solved by this invention is that the existing technology has the disadvantages of requiring the grease sample to be dissolved first, which is cumbersome to operate, and the liquid reagent is inconvenient to carry and is prone to leakage or failure. To address this, we propose a portable alkalinity detection device based on the phenolphthalein colorimetric reaction.

[0006] To achieve the above objectives, this application adopts the following technical solution: a portable alkaline detection device based on phenolphthalein colorimetric reaction, comprising a detection box: the detection box is the main structure of the device, the upper end of the detection box is provided with a locking groove C, a connecting plate is locked inside the locking groove C, the connecting plate stably installs the fixing plate on the detection box to ensure the stability of the device structure, a fixing plate is fixedly connected to one side of the connecting plate, the fixing plate provides stable support for the telescopic rod to ensure that the telescopic rod does not shake during adjustment;

[0007] A telescopic rod is fixedly connected to the lower end of the fixing plate. The telescopic rod changes the height of the phenolphthalein solid slide by extending and retracting, making it easy to accurately place it into the reaction chamber to contact the sample, or to remove it from the reaction chamber. A mounting block is fixedly connected to the lower end of the telescopic rod. The mounting block serves as the mounting carrier for the phenolphthalein solid slide. A locking groove A is opened on one side of the mounting block. The phenolphthalein solid slide is locked inside the locking groove A to fix the phenolphthalein solid slide. A reaction chamber is opened inside the detection box. The reaction chamber is the place where the sample reacts with phenolphthalein.

[0008] Preferably, the upper end of the detection box is provided with a locking groove B, and multiple sets of locking grooves B are provided. A connecting rod is locked inside the locking groove B. The connecting rod connects the handle and the detection box, fixing the handle to the detection box. The handle makes it convenient for the user to hold the device, making it easy to carry and operate.

[0009] Preferably, the upper end of the fixing plate is provided with a liquid inlet, the position of which corresponds to the position of the reaction chamber, and the liquid inlet is used to add liquid samples into the reaction chamber.

[0010] Preferably, the detection box has a mounting groove on one side, which provides mounting space for the mounting shaft, and the mounting shaft is fixedly connected inside the mounting groove.

[0011] Preferably, a rotating shaft is rotatably connected to the outer surface of the mounting shaft, and a toggle block is fixedly connected to the outer surface of the rotating shaft. A colorimetric card is fixedly connected to the upper end of the rotating shaft. The position of the colorimetric card can be adjusted by rotating the toggle block. The colorimetric card is used to compare with the color development of the phenolphthalein solid slide to determine the strength of the sample's alkalinity.

[0012] Preferably, an observation window is fixedly connected to the upper end of the detection box, and the position of the observation window corresponds to the colorimetric card. An LED light is fixedly connected to the lower end of the fixing plate, and the LED light is located above the observation window, so that the user can easily observe the color development of the colorimetric card and the phenolphthalein solid slide through the observation window. The LED light can provide illumination, making it easy to observe the color comparison of the colorimetric card in a dimly lit environment.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] In this invention, the inspection device is checked for the integrity of all components, ensuring that the phenolphthalein solid slide is correctly engaged in the engagement groove A. The detection box is opened, and the sample to be tested is carefully placed into the reaction chamber, taking care not to exceed the maximum capacity of the reaction chamber. The connecting plate is then engaged with the upper end of the detection box, ensuring a secure connection. By adjusting the length of the telescopic rod, the phenolphthalein solid slide is slowly lowered until it fully contacts the sample in the reaction chamber. The color change of the phenolphthalein solid slide is observed. If the sample is alkaline, the phenolphthalein solid slide will change from colorless to red, and the stronger the alkalinity, the more obvious the color change. This simplifies the operation and improves efficiency. Attached Figure Description

[0015] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the detection box structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting shaft structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the phenolphthalein solid substrate structure of this utility model.

[0020] Legend: 1. Detection box; 11. Mounting slot; 12. Engaging slot B; 13. Engaging slot C; 14. Reaction chamber; 15. Liquid inlet; 2. Connecting plate; 3. Fixing plate; 31. LED light; 4. Connecting rod; 41. Handle; 5. Mounting shaft; 51. Rotating shaft; 52. Actuating block; 53. Colorimetric card; 6. Telescopic rod; 61. Engaging slot A; 62. Mounting block; 63. Phenolphthalein solid slide; 7. Observation window. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0022] Reference Figure 1As shown, this utility model provides a technical solution: a portable alkaline detection device based on phenolphthalein colorimetric reaction, including a detection box 1: the detection box 1 is the main structure of the device, and a locking groove C13 is opened at the upper end of the detection box 1. A connecting plate 2 is locked inside the locking groove C13. The connecting plate 2 stably installs the fixing plate 3 on the detection box 1 to ensure the stability of the device structure. A fixing plate 3 is fixedly connected to one side of the connecting plate 2. The fixing plate 3 provides stable support for the telescopic rod 6 to ensure that the telescopic rod 6 will not shake during the adjustment process.

[0023] Reference Figure 1 and Figure 4 As shown in this embodiment: a telescopic rod 6 is fixedly connected to the lower end of the fixing plate 3. The telescopic rod 6 changes the height of the phenolphthalein solid carrier 63 by telescopic movement, so as to accurately place it into the reaction chamber 14 to contact the sample, or remove it from the reaction chamber 14. A mounting block 62 is fixedly connected to the lower end of the telescopic rod 6. The mounting block 62 serves as the mounting carrier for the phenolphthalein solid carrier 63. A locking groove A61 is opened on one side of the mounting block 62. The phenolphthalein solid carrier 63 is locked inside the locking groove A61 to fix the phenolphthalein solid carrier 63. A reaction chamber 14 is opened inside the detection box 1. The reaction chamber 14 is the place where the sample reacts with phenolphthalein.

[0024] Working principle: Check that all components of the device are intact, ensuring that the phenolphthalein solid slide 63 is correctly engaged in the engagement slot A61. Open the detection box 1 and carefully place the sample to be tested into the reaction chamber 14, being careful not to exceed the maximum capacity of the reaction chamber 14. Securely engage the connecting plate 2 with the upper end of the detection box 1, ensuring a firm connection. Adjust the length of the telescopic rod 6 to slowly lower the phenolphthalein solid slide 63 until it is in full contact with the sample in the reaction chamber 14. Let it stand for a period of time and observe the color change of the phenolphthalein solid slide 63. If the sample is alkaline, the phenolphthalein solid slide 63 will change from colorless to red, and the stronger the alkalinity, the more obvious the color change. After the test, adjust the telescopic rod 6 to remove the phenolphthalein solid slide 63 from the sample, remove the connecting plate 2, take out the sample from the reaction chamber 14, and clean the device.

[0025] Reference Figures 1-3As shown in this embodiment: The upper end of the detection box 1 has a locking groove B12, with multiple sets of locking grooves B12. A connecting rod 4 is locked inside the locking groove B12, connecting the handle 41 and the detection box 1, fixing the handle 41 to the detection box 1. The handle 41 facilitates the user's grip on the device, making it easy to carry and operate. The upper end of the fixing plate 3 has a liquid inlet 15, the position of which corresponds to the position of the reaction chamber 14. The liquid inlet 15 is used to add liquid samples into the reaction chamber 14. A mounting groove 11 is provided on one side of the detection box 1, providing mounting space for the mounting shaft 5. The mounting shaft 5 is fixedly connected inside the mounting groove 11. A rotating shaft 51 is rotatably connected to the outer surface of the mounting shaft 5. A toggle block 52 is fixedly connected to the outer surface of the rotating shaft 51. A colorimetric card 53 is fixedly connected to the upper end of the rotating shaft 51. The position of the colorimetric card 53 can be adjusted by rotating the toggle block 52. The colorimetric card 53 is used to compare the color development with that of the phenolphthalein solid slide 63 to determine the strength of the sample's alkalinity. An observation window 7 is fixedly connected to the upper end of the detection box 1. The position of the observation window 7 corresponds to that of the colorimetric card 53. An LED light 31 is fixedly connected to the lower end of the fixing plate 3. The LED light 31 is located above the observation window 7, allowing the user to easily observe the color development of the colorimetric card 53 and the phenolphthalein solid slide 63 through the observation window 7. The LED light 31 provides illumination, making it convenient to observe the color contrast of the colorimetric card 53 in low-light environments.

[0026] Working principle: For liquid samples, the sample to be tested can be slowly injected into the reaction chamber 14 through the inlet 15 at the upper end of the fixed plate 3. If the ambient light is dim, the LED light 31 at the lower end of the fixed plate 3 can be turned on. After standing for a period of time, observe the color change of the phenolphthalein solid slide 63 through the observation window 7 at the upper end of the detection box 1. Move the actuating block 52 on the outer surface of the rotating shaft 51 to make the rotating shaft 51 rotate, which will drive the colorimetric card 53 to rotate. The user can clearly observe the color development of the colorimetric card 53 and the phenolphthalein solid slide 63 through the observation window 7, which is convenient for colorimetric comparison and judging the alkalinity of the sample. After the test, adjust the telescopic rod 6 to remove the phenolphthalein solid slide 63 from the sample, remove the connecting plate 2, take out the sample in the reaction chamber 14, and clean the device. The locking groove B12 provides an installation position for the connecting rod 4, realizing a stable connection between the connecting rod 4 and the detection box 1. The connecting handle 41 and the detection box 1 are fixed to the detection box 1, making it convenient for the user to hold the device, and easy to carry and operate.

[0027] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A portable alkalinity detection device based on phenolphthalein colorimetric reaction, characterized in that: Includes a detection box: the upper end of the detection box has a locking groove C, a connecting plate is locked inside the locking groove C, and a fixing plate is provided on one side of the connecting plate; The lower end of the fixed plate is provided with a telescopic rod, the lower end of the telescopic rod is provided with a mounting block, a locking groove A is provided on one side of the mounting block, a phenolphthalein solid carrier is locked and connected inside the locking groove A, and a reaction chamber is provided inside the detection box.

2. The portable alkalinity detection device based on phenolphthalein colorimetric reaction according to claim 1, characterized in that: The detection box has a locking groove B at the upper end. Multiple sets of locking grooves B are provided. Connecting rods are engaged inside the locking grooves B, and a handle is engaged between every two sets of connecting rods.

3. The portable alkalinity detection device based on phenolphthalein colorimetric reaction according to claim 1, characterized in that: The upper end of the fixed plate is provided with a liquid inlet, and the position of the liquid inlet corresponds to the position of the reaction chamber.

4. The portable alkalinity detection device based on phenolphthalein colorimetric reaction according to claim 1, characterized in that: The detection box has a mounting groove on one side, and a mounting shaft is provided inside the mounting groove.

5. The portable alkalinity detection device based on phenolphthalein colorimetric reaction according to claim 4, characterized in that: A rotating shaft is rotatably connected to the outer surface of the mounting shaft, a toggle block is provided on the outer surface of the rotating shaft, and a colorimetric card is provided at the upper end of the rotating shaft.

6. The portable alkalinity detection device based on phenolphthalein colorimetric reaction according to claim 1, characterized in that: The detection box has an observation window at its upper end, which corresponds to the position of the colorimetric card. An LED light is provided at the lower end of the fixing plate, and the LED light is located above the observation window.

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