Handheld turbidity measuring instrument

Abstract

The utility model discloses a handheld turbidity measuring instrument and relates to the technical field of turbidity measurement. The handheld turbidity measuring instrument is an open container and comprises a square black scale vertical plate, a transparent front plate, a right triangle transparent first side plate and a right triangle transparent second side plate, the included angle between the scale vertical plate and the front plate is 15 degrees, and the first side plate and the second side plate are arranged on the two sides of the scale vertical plate and the front plate. And the turbidity measuring instrument is made of a high borosilicate glass material with high temperature resistance and strong alkali corrosion resistance. The handheld turbidity measuring instrument disclosed by the utility model has a unique structure, has high temperature resistance, strong alkali corrosion resistance and high visualization, is portable to use, and can quickly realize turbidity detection of a sodium aluminate solution. And meanwhile, the operation is simple, the detection time is shortened, and the labor intensity of operators is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of turbidity measurement, and in particular relates to a handheld turbidity measuring instrument. Background Art

[0002] The statements in this section are merely intended to provide background information related to the technical solution of the present application to aid understanding, and they do not necessarily constitute prior art with respect to the technical solution of the present application.

[0003] In the Bayer process alumina production, the turbidity of the sodium aluminate solution can be used to determine the content of trace insoluble suspended matter in the crude liquor, thereby controlling the amount of flocculant added. If improperly controlled, the content of trace insoluble suspended matter in the crude liquor will be too high, which will lead to low efficiency of the leaf filter and a decrease in the flow rate through the leaf filter, thereby reducing production capacity.

[0004] In industrial production, sodium aluminate solutions are subjected to high temperatures and strong alkalinity, and they deteriorate upon cooling. Currently, the most commonly used methods for measuring the turbidity of sodium aluminate solutions in industry include visual methods, benchtop turbidimeters, and portable outdoor turbidimeters. The visual method primarily relies on visual observation and empirical experience to determine the solution's turbidity. While simple and convenient, and requiring no complex instrumentation, it suffers from significant measurement errors due to the subjectivity and perceptual differences of the human eye. Benchtop turbidimeters, with built-in microprocessors, can measure solution turbidity on filtration devices located in various locations. They utilize microprocessor technology to automatically sample, analyze, and calculate the measured solution, outputting a turbidity standard curve or histogram. While accurate, these instruments are complex, require specialized expertise, are difficult to move, and are expensive, making them unsuitable for industrial applications. Portable outdoor turbidimeters, with built-in microprocessors, measure solution turbidity by placing a sample into a flow-through cup. While simple and portable, these methods, however, have small capacity and rapid heat dissipation. As sodium aluminate solutions deteriorate upon cooling, this can affect the turbidity test results. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the above methods and devices and to provide a handheld turbidity measuring instrument that is easy to carry, simple to use, has small errors, is resistant to high temperatures and strong alkalis, and is economical.

[0006] The handheld turbidity meter includes an open container surrounded by a scale plate, a front plate, a first side plate, and a second side plate. The scale plate is an opaque plate, and the front plate, the first side plate, and the second side plate are transparent plates. The scale plate and the front plate are square plates, and the first side plate and the second side plate are triangular plates of the same size. The two sides of the scale plate are fixedly connected to the same length of the first and second side plates, and the two sides of the front plate are fixedly connected to the other same length of the first and second side plates. The bottom edge of the scale plate is fixedly connected to the bottom edge of the front plate. Specifically, the scale plate and the side plates are connected by a glass welding process, and the front plate and the side plates are connected by a glass welding process. The glass welding process can achieve high-precision seamless welding and strong corrosion resistance.

[0007] Furthermore, the scale plate is marked with numbers and scale lines from bottom to top, and the scale lines are equally spaced.

[0008] Furthermore, the scale plate, front plate, first side plate and second side plate are all made of plates that are resistant to high temperature and strong alkali corrosion.

[0009] Furthermore, the front plate, the first side plate and the second side plate are all transparent borosilicate glass plates, and the scale vertical plate is a black borosilicate glass plate.

[0010] Furthermore, the first side panel and the second side panel are right-angled triangular panels of the same size, the two sides of the scale vertical panel are fixedly connected to the right-angled sides of equal length of the first side panel and the second side panel, the two sides of the front panel are fixedly connected to the oblique sides of the first side panel and the second side panel, and the bottom edge of the scale vertical panel is fixedly connected to the bottom edge of the front panel.

[0011] Furthermore, the three angles of the first side panel and the second side panel are 15°, 75° and 90° respectively, and the included angle between the scale vertical panel and the front panel is 15°.

[0012] Compared with the existing technology, the handheld turbidity meter of the utility model adopts a unique structure, can be used in a portable manner, and can quickly realize the turbidity detection of the sodium aluminate solution, thereby avoiding the low-temperature deterioration of the sodium aluminate solution; at the same time, because the material is high borosilicate glass and the process adopts glass welding, the handheld turbidity meter of the sodium aluminate solution has the characteristics of high temperature resistance, strong alkali corrosion resistance and high visualization. Compared with the visual method commonly used in alumina production, it has high accuracy and simple operation, and is easy for workers to operate, which not only shortens the detection time but also reduces the labor intensity of the operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural stereoscopic diagram of an embodiment of the present utility model.

[0014] Figure 2 It is a structural front view of an embodiment of the utility model.

[0015] Figure 3 It is a left side view of the structure of an embodiment of the present utility model.

[0016] Among them, 1- scale vertical plate, 2- front plate, 3- first side plate, 4- second side plate, 5- bottom corner of side plate DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the handheld turbidity meter of the present application is described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example 1

[0019] A handheld turbidity meter includes an open container surrounded by a scale plate, a front plate and two side plates:

[0020] Scale plate 1 - located on the rear facade of the measuring instrument, it is rectangular in shape and has 40 scales inside, each scale is 5 mm apart, and is used to judge the turbidity of the solution. It is made of black borosilicate scale glass plate with white scale font, and has the advantages of high temperature resistance and strong alkali corrosion resistance.

[0021] Front plate 2 - located on the front facade of the measuring instrument, it is rectangular in shape and forms a 15° angle with the scale plate 1. It is made of transparent borosilicate glass plate and has the advantages of high temperature resistance and strong alkali corrosion resistance.

[0022] The first side panel 3 and the second side panel 4 are located on both sides of the turbidity meter. They are in the shape of a right triangle. The top angle 5 at the lower end of the side panel is 15°. The scale plate 1 and the front panel 2 are fixedly connected here. The side panels are made of transparent borosilicate glass plates, which have the advantages of high temperature resistance and strong alkali corrosion resistance.

[0023] The two sides of the scale vertical plate 1 are respectively connected to the equal-length right-angled sides of the first side plate 3 and the second side plate 4 through a glass welding process, and the two sides of the front plate 2 are respectively connected to the oblique sides of the first side plate 3 and the second side plate 4 through a glass welding process. The glass welding process can achieve high-precision seamless welding and has strong corrosion resistance.

[0024] The method of using the handheld turbidity meter of the utility model is as follows: first, preheat the handheld turbidity meter with hot water and then pour out the hot water. This is because the sodium aluminate solution in the Bayer process alumina production has a high temperature. If it is directly injected into the glass instrument, the instrument will be damaged due to sudden cooling and heating; then, an appropriate amount of sodium aluminate solution is injected into the turbidity meter (depending on the degree of turbidity, and try to ensure that there are undisplayed scales); finally, hold the turbidity meter with the scale plate of the turbidity meter upright, face the front plate, and observe the maximum scale displayed on the turbidity meter with a straight line (only observe the scale below the liquid surface), record it as the turbidity value of the sodium aluminate solution measured this time, and thus evaluate the turbidity of the sodium aluminate solution. Because the thickness of the liquid on the same horizontal plane in this measuring instrument increases from bottom to top, from the front plate to the graduated plate, when the liquid is highly turbid, values can be observed at smaller scales due to the thinner liquid, while values cannot be observed at larger scales due to the thicker turbid liquid. Conversely, when the liquid is less turbid, values can be observed at larger scales. Therefore, the larger the observed scale value, the lower the turbidity of the sodium aluminate solution. Turbidity measurements can be used to further adjust the amount of flocculant added during the production process.

Claims

1. A handheld turbidity meter, characterized in that: The invention comprises an open container surrounded by a scale vertical plate (1), a front plate (2), a first side plate (3) and a second side plate (4), wherein the scale vertical plate (1) is an opaque plate, the front plate (2), the first side plate (3) and the second side plate (4) are transparent plates, the scale vertical plate (1) and the front plate (2) are square plates, the first side plate (3) and the second side plate (4) are triangular plates of the same size, the two sides of the scale vertical plate (1) are respectively fixedly connected to the same length of the first side plate (3) and the second side plate (4), the two sides of the front plate (2) are respectively fixedly connected to the same length of the other side of the first side plate (3) and the second side plate (4), and the bottom edge of the scale vertical plate (1) is fixedly connected to the bottom edge of the front plate (2).

2. The handheld turbidity meter according to claim 1, characterized in that: The scale plate (1) is marked with numbers and scale lines from bottom to top, and the scale lines are equally spaced.

3. The handheld turbidity meter according to claim 1, characterized in that: The scale vertical plate (1), the front plate (2), the first side plate (3) and the second side plate (4) are all plates that are resistant to high temperature and strong alkali corrosion.

4. The handheld turbidity meter according to claim 3, characterized in that: The front plate (2), the first side plate (3) and the second side plate (4) are all transparent high-borosilicate glass plates, and the scale vertical plate (1) is a black high-borosilicate scale glass plate.

5. The handheld turbidity meter according to claim 1, characterized in that: The first side panel (3) and the second side panel (4) are right-angled triangular panels of the same size; the two sides of the scale vertical panel (1) are respectively fixedly connected to the right-angled sides of equal length of the first side panel (3) and the second side panel (4); the two sides of the front panel (2) are respectively fixedly connected to the oblique sides of the first side panel (3) and the second side panel (4); and the bottom side of the scale vertical panel (1) is fixedly connected to the bottom side of the front panel (2).

6. The handheld turbidity meter according to claim 5, characterized in that: The three angles of the first side plate (3) and the second side plate (4) are 15°, 75° and 90° respectively, and the included angle between the scale vertical plate (1) and the front plate (2) is 15°.

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