Water quality colorimeter calibration device

Abstract

The utility model relates to the technical field of water quality detection, in particular to a water quality colorimeter calibration device which comprises a colorimetric groove formed in the right side of a colorimeter body, a colorimetric tube is inserted into the colorimetric groove, a detection light path extending into the colorimetric groove is formed in the colorimeter body, and a strip-shaped cavity is formed in the colorimeter body and located in the detection light path. The top wall of the strip-shaped cavity is provided with an elastic rope, the bottom of the elastic rope is provided with a dark current calibration card which is slidably connected to the interior of the strip-shaped cavity, and the bottom wall of the strip-shaped cavity is provided with an electromagnet. The dark current calibration card is arranged in the strip-shaped cavity, dark current calibration is carried out, the problems that the dark current calibration card leaks light and the calibration accuracy is affected due to traditional manual placement are solved, the dark current calibration card is stored in the strip-shaped cavity, and the dark current calibration card is prevented from being contaminated by dust and other sundries when being placed outside, and then the accuracy of dark current calibration is affected.

Description

Technical Field

[0001] This utility model relates to the field of water quality testing technology, and in particular to a water colorimeter calibration device. Background Technology

[0002] Water color is a key indicator for measuring water quality. It not only affects the appearance of water bodies but may also reflect pollutants present in the water, such as dissolved organic matter and suspended particles. When a water colorimeter is used for the first time or restarted after a long period of inactivity, dark current calibration and zero-point calibration procedures must be performed sequentially to ensure measurement accuracy.

[0003] However, in the dark current calibration stage, traditional methods often involve inserting a black card into the cuvette to block the light path in order to measure electronic noise under no-light conditions. But this operation relies on manual placement, which can easily result in the card not fitting tightly against the edge of the cuvette, allowing ambient light to leak into the detection light path. This leads to falsely high dark current measurements and ultimately affects the accuracy of the instrument's zero point.

[0004] During the zero-point calibration and water sample testing stages, contaminants such as watermarks, fingerprints, or dust remaining on the outer wall of the colorimetric tube can significantly interfere with the transmission path of the light signal. These impurities may scatter or absorb the detection light, resulting in higher colorimetric measurements. Furthermore, the randomness of the stain distribution can cause fluctuations in the results of multiple measurements of the same sample, severely affecting the repeatability and reliability of the data. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a water colorimeter calibration device that solves the technical problems of light leakage during dark current calibration, which affects the accuracy of colorimeter calibration, and water marks remaining on the outer wall of the colorimeter tube during zero-point calibration, which significantly interfere with the projection path of the light signal and affect the calibration results. This device improves the accuracy of water colorimeter calibration.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a water quality colorimeter calibration device, including a top cover hinged to the right detection area of ​​the colorimeter body, a colorimeter groove is provided on the right side of the colorimeter body, a colorimeter tube is inserted into the colorimeter groove, a detection optical path extending into the colorimeter groove is provided inside the colorimeter body, a strip cavity is provided inside the colorimeter body and located in the detection optical path, an elastic rope is installed on the top wall of the strip cavity, a dark current calibration card is slidably connected to the bottom of the elastic rope and inside the strip cavity, an electromagnet is installed on the bottom wall of the strip cavity, and a cleaning mechanism is provided in the colorimeter groove for wiping water marks remaining on the outer wall of the colorimeter tube.

[0007] A further improvement is that the area of ​​the strip cavity is larger than the area of ​​the detection optical path, and a magnetic block is installed at the bottom of the dark current calibration card.

[0008] A further improvement is that the cleaning mechanism includes a placement plate installed in the colorimetric tank, an electromagnetic side plate installed on the top outer side of the cleaning mechanism, a magnetic slider installed in a groove opened in the electromagnetic side plate, a plurality of springs arrayed on the outer surface of the magnetic slider, a cleaning cotton strip installed on the outer end of the spring, and a transmission component for driving its rotation installed at the bottom of the placement plate.

[0009] A further improvement is that a groove adapted to the diameter of the colorimetric tube is provided at the center of the top of the placement plate, and a pressure sensor is installed in the mounting groove provided in the inner wall of the groove.

[0010] A further improvement is that a sealing cap is threaded to the top of the colorimetric tube, positioning blocks are symmetrically installed on both sides of the colorimetric groove, an ear plate adapted to the positioning block is installed on the outer wall of the colorimetric tube, and a positioning rod adapted to the insertion groove opened on the positioning block is installed at the bottom of the ear plate.

[0011] A further improvement is that a display screen is installed on the left side of the colorimeter body, and an operation button is installed below the display screen.

[0012] By employing the above technical solution, this utility model provides a water colorimeter calibration device, which has at least the following beneficial effects:

[0013] 1. This utility model uses an electromagnet to generate an attractive force on the magnetic block at the bottom of the dark current calibration card, pulling the dark current calibration card down to completely block the detection light path and perform dark current calibration. This avoids the problem of light leakage caused by traditional manual placement, which affects the calibration accuracy. Furthermore, storing the dark current calibration card in the strip cavity prevents it from being exposed to dust and other debris, thus affecting the accuracy of dark current calibration.

[0014] 2. In this invention, when the colorimetric tube is inserted into the groove on the placement plate, the pressure sensor receives pressure and sends an electrical signal to energize the electromagnetic side plate and generate a repulsive force between it and the magnetic slider, pushing the magnetic slider outward. This, in turn, pushes the cleaning cotton strip outward to adhere to the outer wall of the colorimetric tube. Subsequently, the rotating transmission component drives the placement plate to rotate, which in turn drives the cleaning cotton strip to rotate and wipe away any remaining water marks on the outer wall of the colorimetric tube, thus preventing water marks from affecting the calibration results. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the detection area structure of the colorimeter body of this utility model;

[0019] Figure 3 This is a cross-sectional view of the internal structure of the detection optical path of this utility model;

[0020] Figure 4 This is a cross-sectional view of the internal structure of the colorimetric cell of this utility model;

[0021] Figure 5 This is an independent schematic diagram of the internal structure of the colorimetric cell of this utility model;

[0022] Figure 6 This is a schematic diagram of the independent structure of the cleaning mechanism of this utility model.

[0023] In the diagram: 1. Colorimeter body; 2. Top cover; 3. Colorimetric cell; 4. Colorimetric tube; 5. Detection optical path; 6. Bar cavity; 7. Elastic rope; 8. Dark current calibration card; 9. Electromagnet; 10. Magnetic block;

[0024] 11. Cleaning mechanism; 111. Placement plate; 112. Electromagnetic side plate; 113. Magnetic slider; 114. Spring; 115. Cleaning swabs; 116. Transmission assembly; 117. Pressure sensor;

[0025] 41. Sealing cap; 42. Positioning block; 43. Ear plate; 44. Positioning rod;

[0026] 51. Display screen; 52. Operation buttons. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1

[0029] Due to existing technologies, light leakage may occur during dark current calibration, affecting the accuracy of colorimeter calibration. Furthermore, during zero-point calibration, watermarks remaining on the outer wall of the colorimetric tube can significantly interfere with the light signal projection path, affecting the calibration results. This embodiment provides a water quality colorimeter calibration device. Please refer to... Figures 1-6This embodiment provides a water quality colorimeter calibration device that can improve the accuracy of water quality colorimeter calibration. The device includes a top cover 2 hinged to the right detection area of ​​the colorimeter body 1. A colorimeter groove 3 is provided on the right side of the colorimeter body 1, and a colorimeter tube 4 is inserted into the colorimeter groove 3. A detection optical path 5 extending into the colorimeter groove 3 is provided inside the colorimeter body 1. A strip cavity 6 is provided inside the colorimeter body 1 and located within the detection optical path 5. An elastic rope 7 is installed on the top wall of the strip cavity 6, and a dark current calibration card 8 slidably connected to the bottom of the elastic rope 7 is installed inside the strip cavity 6. An electromagnet 9 is installed on the bottom wall of the strip cavity 6. A cleaning mechanism 11 is provided inside the colorimeter groove 3 for wiping away water stains remaining on the outer wall of the colorimeter tube 4.

[0030] The area of ​​the strip cavity 6 is larger than the area of ​​the detection optical path 5. A magnetic block 10 is installed at the bottom of the dark current calibration card 8. When the colorimeter body 1 is used for dark current calibration for the first time, the electromagnet 9 is energized, which generates an attraction force on the magnetic block 10 at the bottom of the dark current calibration card 8, pulling the dark current calibration card 8 down along the strip cavity 6 and stretching the elastic rope 7 until the dark current calibration card 8 completely blocks the detection optical path 5 to perform dark current calibration. This avoids the problem of light leakage caused by traditional manual placement, which affects the calibration accuracy. In addition, storing the dark current calibration card 8 in the strip cavity 6 prevents the dark current calibration card 8 from being exposed to the outside and getting contaminated with dust and other debris, which would affect the accuracy of dark current calibration.

[0031] A display screen 51 is installed on the left side of the colorimeter body 1, and an operation button 52 is installed below the display screen 51. The operation of the colorimeter body 1 is controlled by the operation button 52, and the test results are displayed on the display screen 51, which makes it easier to operate.

[0032] Example 2

[0033] Because residual water marks on the outer wall of colorimetric tube 4 can significantly interfere with the projection path of the light signal and affect the calibration results, therefore, based on Example 1, as... Figures 1-6As shown, the device also includes a cleaning mechanism 11, which includes a placement plate 111 installed inside the colorimetric tank 3. An electromagnetic side plate 112 is installed on the outer top of the cleaning mechanism 11. A magnetic slider 113 is installed in a groove opened in the electromagnetic side plate 112. Multiple springs 114 are arrayed on the outer surface of the magnetic slider 113. Cleaning cotton strips 115 are installed on the outer ends of the springs 114. A transmission assembly 116 is installed at the bottom of the placement plate 111 to drive its rotation. When the colorimetric tube 4 is inserted into the colorimetric tank 3... Then, the cleaning swab 115 is pushed by the spring 114 to adhere to the outer wall of the colorimetric tube 4. Then, the knob in the transmission assembly 116 is turned to drive the rotating shaft to rotate, which in turn drives the bevel gear at the inner end of the rotating shaft to rotate, thereby driving the driven bevel gear that meshes with it and whose top is connected to the bottom of the placement plate 111 to rotate, thereby driving the placement plate 111 to rotate, and thus driving the cleaning swab 115 on the placement plate 111 to rotate to wipe the water marks remaining on the outer wall of the colorimetric tube 4, so as to avoid the water marks remaining affecting the calibration results.

[0034] To prevent the tampon 115 from protruding and affecting the insertion of the colorimetric tube 4 into the colorimetric groove 3, the top center of the placement plate 111 in this device has a groove that matches the diameter of the colorimetric tube 4. A pressure sensor 117 is installed in the mounting slot on the inner wall of the groove. When the colorimetric tube 4 is inserted into the groove on the placement plate 111, the pressure sensor 117 receives pressure from the outer wall of the colorimetric tube 4 and sends an electrical signal to the colorimeter body 1. The colorimeter body 1 then powers the electromagnetic side plate 112, which generates a repulsive force with the magnetic slider 113, pushing the magnetic slider 113 outward. This, in turn, pushes the tampon 115 outward to adhere to the outer wall of the colorimetric tube 4 for wiping and cleaning. Normally, the tampon 115 is in a retracted state and will not affect the insertion of the colorimetric tube 4.

[0035] To prevent the colorimetric tube 4 from shaking during the wiping process of water stains on the outer wall of the colorimetric tube 4 by rotating the cleaning tampon 115, a sealing cap 41 is threadedly connected to the top of the colorimetric tube 4 in this device. Positioning blocks 42 are symmetrically installed on both sides of the colorimetric groove 3. Ear plates 43 that are compatible with the positioning blocks 42 are installed on the outer wall of the colorimetric tube 4. Positioning rods 44 that are compatible with the insertion slots opened on the positioning blocks 42 are installed at the bottom of the ear plates 43. When the colorimetric tube 4 is inserted into the colorimetric groove 3, the positioning rods 44 at the bottom of the ear plates 43 on its outer wall are simultaneously inserted into the insertion slots on the positioning blocks 42, thereby fixing the colorimetric tube 4 and preventing shaking during the wiping process.

[0036] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water quality colorimeter calibration device, comprising a top cover (2) hinged to the right detection area of ​​the colorimeter body (1), characterized in that: The colorimeter body (1) has a colorimeter groove (3) on the right side, and a colorimeter tube (4) is inserted into the colorimeter groove (3). The colorimeter body (1) has a detection optical path (5) extending into the colorimeter groove (3). The colorimeter body (1) has a strip cavity (6) located in the detection optical path (5). An elastic rope (7) is installed on the top wall of the strip cavity (6). A dark current calibration card (8) is slidably connected to the bottom of the elastic rope (7) and is installed in the strip cavity (6). An electromagnet (9) is installed on the bottom wall of the strip cavity (6). The colorimeter groove (3) is equipped with a cleaning mechanism (11) for wiping the water marks remaining on the outer wall of the colorimeter tube (4).

2. The water colorimeter calibration device according to claim 1, characterized in that: The area of ​​the strip cavity (6) is larger than the area of ​​the detection optical path (5), and a magnetic block (10) is installed at the bottom of the dark current calibration card (8).

3. The water colorimeter calibration device according to claim 1, characterized in that: The cleaning mechanism (11) includes a placement plate (111) installed in the colorimetric tank (3), an electromagnetic side plate (112) is installed on the outer side of the top of the cleaning mechanism (11), a magnetic slider (113) is installed in the groove opened in the electromagnetic side plate (112), a plurality of springs (114) are arrayed on the outer surface of the magnetic slider (113), a cleaning cotton strip (115) is installed on the outer end of the spring (114), and a transmission component (116) for driving the plate (111) to rotate is installed at the bottom of the placement plate (111).

4. The water colorimeter calibration device according to claim 3, characterized in that: The top center of the placement plate (111) has a groove that matches the diameter of the colorimetric tube (4), and a pressure sensor (117) is installed in the mounting groove on the inner wall of the groove.

5. The water colorimeter calibration device according to claim 1, characterized in that: The top of the colorimetric tube (4) is threaded with a sealing cap (41), and positioning blocks (42) are symmetrically installed on both sides of the colorimetric groove (3). The outer wall of the colorimetric tube (4) is fitted with an ear plate (43) that matches the positioning block (42), and the bottom of the ear plate (43) is fitted with a positioning rod (44) that matches the insertion groove opened on the positioning block (42).

6. The water colorimeter calibration device according to claim 1, characterized in that: The colorimeter body (1) is equipped with a display screen (51) on the left side, and an operation button (52) is installed below the display screen (51).

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