Sample constant-temperature tank for detecting transmittance of crystal sugar

Abstract

The utility model relates to food detection equipment technical field, concretely relates to a sample constant temperature tank of sugar crystal transmittance detection. The utility model provides a sample constant temperature tank of sugar crystal transmittance detection, including tank body, the cover plate of setting up on tank body and the sample cell for accommodating sugar crystal sample solution, the sample cell is detachable structure, and its both ends are equipped with the optical detection window made of light transmission material, the outside four corners of tank body is equipped with the movable buckle with sample cell positioning, and the bottom of tank body is equipped with the positioning groove with the top shape of sample cell matching, is used for accurately placing sample cell and limiting its movement in horizontal plane, the sample cell is located and is equipped with the positioning mouth of through joint at movable buckle, one side of the inside of tank body is equipped with the heating element extending to sample cell, and one side of heating element is equipped with temperature sensor, one side of tank body with heating element opposite is equipped with micro circulating pump.

Description

Technical Field

[0001] This utility model relates to the field of food testing equipment technology, specifically to a constant temperature bath for detecting the transmittance of rock sugar. Background Technology

[0002] As a common sugar product, the transmittance of rock sugar is a key indicator for measuring crystallization uniformity, impurity content, and purity, directly affecting product quality grading. During transmittance testing, the rock sugar sample to be tested must be dissolved in a solution and placed in a constant-temperature environment to avoid the influence of temperature fluctuations on the refractive index of light, ensuring the reliability of the test results. The sample constant-temperature bath, as a core auxiliary device for transmittance testing, provides a stable and uniform temperature environment for the sample.

[0003] However, existing sample isothermal baths suffer from the following problems: First, the sample cells are mostly fixed installations, making disassembly and cleaning difficult, and residual solutions can easily contaminate subsequent tests; second, the liquid temperature uniformity within the bath is poor, and localized temperature differences can lead to inconsistent light refractive indices, causing detection errors; third, the lack of light-shielding design allows stray external light to easily interfere with transmittance detection, reducing data reliability. Therefore, there is an urgent need for a sample isothermal bath with optimized structure, precise positioning, and good temperature uniformity to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a constant temperature bath for detecting the transmittance of rock sugar. By using a detachable sample cell, a precise positioning structure, a circulating heating system, and a light-shielding design, it solves the problems of inconvenient sample cell disassembly and assembly, uneven temperature, and light interference in existing constant temperature baths, thereby improving the accuracy and ease of operation of transmittance detection.

[0005] The present invention provides a constant temperature bath for detecting the transmittance of rock sugar, comprising a bath body, a cover plate disposed on the bath body, and a sample cell for containing a rock sugar sample solution. The sample cell is a detachable structure with optical detection windows made of light-transmitting material at both ends. Movable latches for positioning the sample cell are located at the four outer corners of the bath body, and a positioning groove matching the shape of the top of the sample cell is provided at the bottom of the bath body for precise placement of the sample cell and limiting its movement in the horizontal plane. A through-hole positioning port is provided in the sample cell at the movable latches. A heating element extending to the sample cell is provided on one side of the bath body, and a temperature sensor is provided on one side of the heating element. A micro-circulation pump is provided on the side of the bath body opposite to the heating element. The inlet and outlet of the micro-circulation pump are respectively connected via pipes to two sides of the sample cell that are positioned away from the optical path of the optical detection windows.

[0006] As a preferred technical solution of this utility model, the movable buckle includes a flexible movable piece and a limiting slider located outside the flexible movable piece. The bottom inner side of the flexible movable piece is provided with an interlocking protrusion that matches the shape of the positioning port, and the outer side of the groove is provided with a corresponding movable groove at the flexible movable piece. The outer side of the movable groove is slidably connected to the limiting slider, and the inner side of the limiting slider abuts against the outer side of the flexible movable piece.

[0007] As a preferred embodiment of this utility model, the lower end face of the inner side of the positioning groove is located at the lower end of the sample cell positioning port and abuts against the inner wall of the sample cell.

[0008] As a preferred embodiment of this utility model, the top and side walls of the positioning groove that contact the sample pool are provided with corresponding sealing rubber rings.

[0009] As a preferred embodiment of this utility model, the sample cell is provided with light shields at both ends, the light shields are arranged parallel to the optical detection window, and the light shields are provided with detection holes for the probe of the transmittance detection instrument to extend into.

[0010] As a preferred embodiment of this invention, the height of the inlet of the micro-circulation pump is lower than the height of the outlet.

[0011] As a preferred technical solution of this utility model, a temperature controller electrically connected to and controlled by the heating element and temperature sensor is provided on the outer side of the tank. The temperature controller is provided with a display screen for data display and multiple control buttons.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. Detachable sample cell design: The sample cell adopts a detachable structure, which facilitates cleaning of residual solution after the experiment, avoids cross-contamination, and improves detection efficiency.

[0014] 2. Precise positioning structure: The interlocking protrusions of the movable buckle cooperate with the positioning port of the sample cell, and the shape of the bottom positioning groove matches, effectively restricting the horizontal movement of the sample cell, ensuring that the optical detection window is aligned with the optical path of the detection instrument, and improving the accuracy of transmittance measurement.

[0015] 3. Temperature uniformity optimization: The inlet of the micro circulation pump is lower than the outlet, and the height difference is used to form a natural circulation, which promotes the uniform flow of the sample solution in the tank. Combined with the coordinated control of the heating element and temperature sensor, the local temperature difference is significantly reduced, ensuring the stability of the constant temperature environment.

[0016] 4. Anti-light interference design: The light shields at both ends of the sample cell can block external stray light, allowing the light transmittance instrument probe to enter only through the detection hole, thus avoiding light interference and improving the reliability of the detection data. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a constant temperature bath for detecting the transmittance of rock sugar according to this utility model.

[0018] Figure 2 This is a cross-sectional three-dimensional structural diagram of a sample constant temperature bath for detecting the transmittance of rock sugar according to this utility model.

[0019] Figure 3 This is a three-dimensional cross-sectional view of the movable latch of the sample constant temperature bath for detecting the transmittance of rock sugar according to this utility model.

[0020] Figure 4 This is a structural diagram of the sample cell of a constant temperature bath for detecting the transmittance of rock sugar according to this utility model.

[0021] As shown in the figure:

[0022] 1. Tank body; 2. Cover plate; 3. Sample cell; 4. Optical detection window; 5. Movable buckle; 6. Positioning groove; 7. Positioning port; 8. Heating element; 9. Temperature sensor; 10. Miniature circulation pump; 11. Pipe; 12. Flexible movable plate; 13. Limiting slider; 14. Fitting protrusion; 15. Movable groove; 16. Sealing rubber ring; 17. Light shield; 18. Detection hole; 19. Temperature controller; 20. Display screen; 21. Control button; 22. Water inlet; 23. Water outlet. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1:

[0026] As per the instruction manual Figure 1-4As shown, a constant temperature bath for detecting the transmittance of rock sugar includes a bath body 1, a cover plate 2 disposed on the bath body 1, and a sample cell 3 for containing the rock sugar sample solution. The sample cell 3 is a detachable structure, with optical detection windows 4 made of light-transmitting material at both ends. Light shields 17 are provided at both ends of the sample cell 3. The light shields 17 are arranged parallel to the optical detection windows 4, and the light shields 17 have detection holes 18 for the probe of the transmittance detection instrument to extend into.

[0027] In this utility model, the lower end face of the inner side of the positioning groove 6 is located at the lower end of the positioning port 7 of the sample cell 3 and abuts against the inner wall of the sample cell 3. The top and side walls of the positioning groove 6 that are in contact with the sample cell 3 are provided with corresponding sealing rubber rings 16.

[0028] In this utility model, the four outer corners of the tank body 1 are provided with movable buckles 5 for positioning the sample cell 3, and the bottom of the tank body 1 is provided with positioning grooves 6 that match the shape of the top of the sample cell 3, for accurately placing the sample cell 3 and restricting its movement on the horizontal plane. The movable buckles 5 include a flexible movable piece 12 and a limiting slider 13 located outside the flexible movable piece 12. The bottom inner side of the flexible movable piece 12 is provided with an interlocking protrusion 14 that matches the shape of the positioning port 7, and the outer side of the tank body 1 is provided with a corresponding movable groove 15 at the flexible movable piece 12. The outer side of the movable groove 15 is slidably connected to the limiting slider 13, and the inner side of the limiting slider 13 abuts against the outer side of the flexible movable piece 12. The sample cell 3 is provided with a through-hole positioning port 7 at the movable buckles 5.

[0029] In this utility model, a heating element 8 extending to the sample cell 3 is provided on one side of the interior of the tank 1, and a temperature sensor 9 is provided on one side of the heating element 8. A micro circulation pump 10 is provided on the side of the tank 1 opposite to the heating element 8. The inlet 22 and outlet 23 of the micro circulation pump 10 are respectively connected to the two sides of the sample cell 3, which are located away from the optical detection window 4, through the pipe 11. The height of the inlet 22 connected to the micro circulation pump 10 is lower than the height of the outlet 23.

[0030] In this utility model, a temperature controller 19 is provided on the outer side of the tank 1, which is electrically connected to and controlled by the heating element 8 and the temperature sensor 9. The temperature controller 19 is provided with a display screen 20 for data display and multiple control buttons 21.

[0031] Working principle

[0032] 1. Sample installation: The dissolved rock sugar sample solution is injected into the sample cell 3. The fitting protrusion 14 of the movable buckle 5 is engaged with the positioning port 7. The limiting slider 13 is pushed to slide along the movable groove 15 to the locked state, fixing the sample cell 3 in the positioning groove 6 at the bottom of the tank body 1 to ensure horizontal positioning accuracy.

[0033] 2. Temperature control: When the temperature controller 19 is activated, the heating element 8 heats the solution. The temperature sensor 9 feeds back the temperature signal to the temperature controller 19 in real time. The solution temperature is stabilized at the set value (e.g., 25±0.1℃) by adjusting the heating power.

[0034] 3. Temperature homogenization: When the micro circulation pump 10 is started, the solution is driven to circulate in the sample cell 3 by using the height difference between the inlet 22 and the outlet 23, so that the heat is evenly distributed and local temperature difference is eliminated.

[0035] 4. Transmittance Measurement: After the temperature stabilizes, the probe of the transmittance measuring instrument extends through the detection hole 18 of the light shield 17, aligns with the optical detection window 4, and measures the transmittance. The light shield 17 blocks external stray light, ensuring that the test results only reflect the transmittance characteristics of the solution itself.

[0036] 5. Cleaning and maintenance: After the test is completed, loosen the movable buckle 5, take out the sample cell 3, empty the solution and clean it for the next use.

[0037] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A constant temperature bath for detecting the transmittance of rock sugar, comprising a bath body (1), a cover plate (2) disposed on the bath body (1), and a sample cell (3) for containing a rock sugar sample solution, characterized in that: The sample cell (3) is a detachable structure, and optical detection windows (4) made of light-transmitting material are provided at both ends; The four outer corners of the trough (1) are provided with movable buckles (5) that position the sample cell (3), and the bottom of the trough (1) is provided with positioning grooves (6) that match the top shape of the sample cell (3) for accurately placing the sample cell (3) and restricting its movement on the horizontal plane. The sample cell (3) has a through-hole (7) for locking at the movable buckle (5); A heating element (8) extending to the sample cell (3) is provided on one side of the interior of the tank (1), and a temperature sensor (9) is provided on one side of the heating element (8). A micro circulation pump (10) is provided on the side of the tank (1) opposite to the heating element (8). The inlet (22) and outlet (23) of the micro circulation pump (10) are respectively connected to the two sides of the optical path of the sample cell (3) that avoid the optical detection window (4) through pipes (11).

2. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The movable buckle (5) includes a flexible movable piece (12) and a limiting slider (13) located outside the flexible movable piece (12). The bottom inner side of the flexible movable piece (12) is provided with a fitting protrusion (14) that matches the shape of the positioning port (7). The outer side of the groove (1) is provided with a corresponding movable groove (15) located at the flexible movable piece (12). The outer side of the movable groove (15) is slidably connected to the limiting slider (13) up and down, and the inner side of the limiting slider (13) abuts against the outer side of the flexible movable piece (12).

3. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The lower end face of the inner side of the positioning groove (6) is located at the lower end of the positioning port (7) of the sample pool (3) and abuts against the inner wall of the sample pool (3).

4. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The top and side walls of the positioning groove (6) that are in contact with the sample pool (3) are provided with corresponding sealing rubber rings (16).

5. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The sample cell (3) is provided with light shields (17) at both ends. The light shields (17) are arranged parallel to the optical detection window (4), and the light shields (17) are provided with detection holes (18) for the probe of the transmittance detection instrument to extend into.

6. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The height of the inlet (22) of the micro circulation pump (10) is lower than the height of the outlet (23).

7. The constant temperature bath for detecting the transmittance of rock sugar according to claim 1, characterized in that: The outer side of the tank (1) is provided with a temperature controller (19) that is electrically connected to and controlled by the heating element (8) and the temperature sensor (9). The temperature controller (19) is provided with a display screen (20) for displaying data and multiple control buttons (21).

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