Multi-module combined migration test pool

Abstract

The utility model relates to a multi-module combination migration test pool, which comprises a migration pool body, a bottom plate and a cover plate, the migration pool body is arranged above the bottom plate and is detachably connected with the bottom plate, the cover plate is arranged above the migration pool body, a partition plate is arranged in the migration pool body and divides an inner cavity of the migration pool body into a plurality of test modules, and the test modules are connected with the bottom plate. A circle of pool body clamping groove is formed in the bottom plate, the size of the pool body clamping groove is matched with that of the migration pool body, the bottom of the migration pool body can be conveniently inserted into the pool body clamping groove to be clamped, a partition plate clamping groove is formed in the pool body clamping groove and matched with the partition plate, and the bottom of the partition plate is clamped in the partition plate clamping groove; the cover plate is provided with a subarea matched with the test module, and the cover plate is detachably connected with the bottom plate. According to the utility model, a migration test can be carried out on a plurality of samples simultaneously, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of analysis and detection experimental equipment, in particular to a multi-module combined migration test pool. Background Art

[0002] Scientific research has recently revealed that harmful elements and substances in food contact materials can migrate into food. Consequently, the safety and sanitation of food contact materials has drawn considerable attention worldwide, with countries formulating corresponding food packaging regulations and setting strict safety and sanitation requirements for food contact materials. Most of the food contact material regulations and standards in various countries explicitly require that specific migration tests be conducted in a manner that closely simulates actual contact between the food contact material and the food. For example, for materials and products with single-sided food contact, migration testing is only permitted on the food-contacting side.

[0003] According to my country's GB5009.156-2016 "National Food Safety Standard - General Rules for Pretreatment Methods for Migration Testing of Food Contact Materials and Articles," the migration test cell method: Measure the food simulant using a measuring tube and place it in a flask. Place the flask and migration test cell in a thermostat and bring them to the test temperature. Separately, take a sample with an area larger than the sealed area of ​​the migration test cell and place it in the migration test cell removed from the thermostat. Reassemble the migration test cell and tighten the screws. Remove the flask containing the food simulant from the thermostat and transfer the food simulant from the flask to the migration test cell through the filling port. Record the volume of food simulant added. Return the migration test cell to the thermostat, which has reached the test temperature.

[0004] The migration test pool currently used can only test one sample at a time, and the temperature test accuracy during the process is not high, which affects the test effect. Therefore, the utility model proposes a multi-module combined migration test pool. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a multi-module combined migration test pool, which can immerse multiple samples at the same time, thereby improving the efficiency of the migration test; the transparent appearance makes it easy to observe the status of the samples and the immersion liquid; the temperature measuring hole and the temperature measuring probe can monitor the temperature of the immersion liquid in real time, and the test effect is better.

[0006] The purpose of this utility model is achieved in this way:

[0007] A multi-module combined migration test cell, comprising a migration cell body, a bottom plate, and a cover plate. The migration cell body is disposed above the bottom plate and is detachably connected to the bottom plate. A cover plate is disposed above the migration cell body. The cover plate has the same size as the bottom plate, and the bottom plate is larger than the migration cell body.

[0008] The migration cell body is provided with a partition to divide the inner cavity of the migration cell body into multiple test modules. The top surface of each test module is provided with a liquid inlet and a temperature measuring port, and the side wall of each test module is provided with a liquid outlet connected to the liquid outlet pipe.

[0009] The bottom plate is provided with a circle of cell body slots, which match the size of the migration cell body, so that the bottom of the migration cell body can be inserted into the cell body slots for engagement. The cell body slots are provided with partition slots, which match the partitions, and the bottom of the partitions is engaged in the partition slots;

[0010] Partitions matching the test module are provided on the cover plate, and each partition is provided with a liquid inlet corresponding to the liquid inlet and a temperature measuring hole corresponding to the temperature measuring port. A temperature measuring probe is inserted into the temperature measuring hole, and the caliber of the temperature measuring probe matches the temperature measuring hole; the cover plate and the base plate are detachably connected.

[0011] Furthermore, the migration pool body is a circular pool body or a polygonal pool body.

[0012] Furthermore, the cross-section of the partitions is connected and distributed in a grid-like manner.

[0013] Furthermore, the liquid outlet pipe is provided with a liquid outlet valve for controlling the opening and closing of the liquid outlet pipe, so as to facilitate the acquisition of the simulant liquid after the migration test.

[0014] Furthermore, a sealing ring is provided in the cell body slot to fasten and seal the migration cell body;

[0015] Furthermore, a screw hole is provided in the middle of each of the four sides of the base plate, and the screw holes are distributed around the outside of the pool body slot. A movable screw shaft is set on the screw hole, and a nut is sleeved on the movable screw shaft. The top of the movable screw shaft is higher than the cover plate above the migration pool body, which is convenient for fastening the cover plate.

[0016] Furthermore, a screw shaft groove is provided in the middle of each of the four edges of the cover plate. The position of the screw shaft groove on each side of the cover plate corresponds to the position of the movable screw shaft on that side. The screw shaft groove is used for the passage of the movable screw shaft. The outer edge diameter of the nut on the movable screw shaft is larger than the diameter of the screw shaft groove, which makes it convenient to tighten the movable screw shaft with the nut after passing through the cover plate, thereby realizing the fastening connection of the cover plate to the migration tank body.

[0017] Furthermore, the inner walls of the liquid inlet and the temperature measuring port are provided with sealing rings and threaded openings, which can be opened and closed by twisting a nut.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model provides a multi-module combined migration test pool, in which a grid-shaped partition is arranged in the migration pool body to separate it into multiple test modules, which can perform migration tests on multiple samples (samples with the same migration conditions) at the same time, thereby improving the test efficiency.

[0020] The migration test pool of the utility model is provided with a switchable temperature measuring hole and a matching temperature measuring probe for conveniently monitoring the actual temperature of the liquid in the migration pool.

[0021] Each migration pool module of the present invention is provided with a switchable drain valve, which facilitates obtaining liquid after the migration test is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a structural schematic diagram of the pool body of the present utility model.

[0024] Figure 3 It is a structural schematic diagram of the bottom plate of the utility model.

[0025] Figure 4 This is a structural diagram of the cover plate of the present invention.

[0026] in:

[0027] Migration pool body 1, partition 11, liquid inlet 12, temperature measuring port 13, liquid outlet pipe 14, liquid outlet valve 15, bottom plate 2, pool body slot 21, partition slot 22, movable screw shaft 23, nut 24, cover plate 3, liquid inlet hole 31, temperature measuring hole 32, screw shaft groove 33. DETAILED DESCRIPTION

[0028] To better understand the technical solution of the present invention, the following detailed description is provided with reference to the relevant illustrations. It should be understood that the following specific embodiments are not intended to limit the specific implementation of the technical solution of the present invention; they are merely examples of possible implementations of the technical solution of the present invention. It should be noted that the description herein of the positional relationships of the various components, such as component A being located above component B, is based on the relative positions of the components in the illustrations and is not intended to limit the actual positional relationships of the components. Example 1

[0029] See also Figures 1-4 , Figure 1A schematic structural diagram of the present invention is provided. As shown in the figure, the present invention relates to a multi-module combined migration test cell, which comprises a migration cell body 1, a base plate 2, and a cover plate 3. The migration cell body 1 is disposed above the base plate 2 and is detachably connected to the base plate 2. A cover plate 3 is disposed above the migration cell body 1. The cover plate 3 is the same size as the base plate 2, and the base plate 2 is larger than the migration cell body 1.

[0030] The migration cell body 1 is a square cell body with an open bottom. A partition 11 is provided in the migration cell body 1. The cross-section of the partition 11 is connected and distributed in a grid-like manner to divide the inner cavity of the migration cell body 1 into multiple test modules. The top surface of each test module is provided with a liquid inlet 12 and a temperature measuring port 13. The side wall of each test module is provided with a liquid outlet connected to a liquid outlet pipe 14. The liquid outlet pipe 14 is provided with a liquid outlet valve 15 for controlling the opening and closing of the liquid outlet pipe 14 to facilitate the acquisition of the simulant liquid after the migration test.

[0031] The bottom plate 2 is provided with a circle of square cell body slots 21, and the cell body slots 2 match the size of the migration cell body 1, so that the bottom of the migration cell body 1 is inserted into the cell body slots 2 for engagement, and a sealing ring is provided in the cell body slots 2 to fasten and seal the migration cell body 1; a grid-shaped partition slot 22 is provided in the cell body slot 21, and the partition slot 22 matches the partition 11, and the bottom of the partition 11 is clamped in the partition slot 22 and fastened with a sealing ring; a screw hole is provided in the middle of each of the four sides of the bottom plate 2, and the screw holes are distributed around the outside of the cell body slot 21, and a movable screw shaft 23 is provided on the screw hole, and a nut 24 is sleeved on the movable screw shaft 23, and the top of the movable screw shaft 23 is higher than the cover plate 3 above the migration cell body 1, which is convenient for fastening and connecting the cover plate 3.

[0032] The cover plate 3 is provided with partitions matching the test modules. Each partition is provided with a liquid inlet 31 corresponding to the liquid inlet 12 and a temperature measuring hole 32 corresponding to the temperature measuring port 13. A temperature measuring probe is inserted into the temperature measuring hole 32. The temperature measuring probe is provided with a sealing ring. The caliber of the temperature measuring probe matches the temperature measuring hole 32 to prevent the solution from volatilizing during temperature measurement. The temperature measuring probe is connected to a temperature display to display the temperature in each test module in real time.

[0033] A screw shaft groove 33 is provided in the middle of each of the four edges of the cover plate 3. The position of the screw shaft groove 33 on each side of the cover plate 3 corresponds to the position of the movable screw shaft 23 on that side. The screw shaft groove 33 is used for the passage of the movable screw shaft 23. The outer edge diameter of the nut 24 on the movable screw shaft 23 is larger than the diameter of the screw shaft groove 33, so that the movable screw shaft 23 can be tightened with the nut 24 after passing through the cover plate 3, thereby realizing the fastening connection of the cover plate 3 on the migration tank body 1.

[0034] The inner walls of the liquid inlet 12 and the temperature measuring port 13 are provided with sealing rings and threaded openings, which can be opened and closed by twisting the nuts.

[0035] The migration cell body 1 is made of transparent glass, so that the migration cell body 1 is fully visible. The glass cell body allows the experimenter to observe the status of the solution and sample in the migration cell from all directions at any time.

[0036] Working principle:

[0037] The present embodiment provides a multi-module combined migration test pool. Each sample is cut into an area slightly larger than the area framed by the sealing ring. When the liquid outlet valve on the side wall of the pool body is ensured to be closed, the bottom plate is placed first, and then each sample is placed. Then, the four modules under the pool body are aligned with the four sealing rings of the bottom plate and pressed. Then, the four large holes and four small holes on the cover plate are aligned with the threaded openings of the liquid inlet and the temperature measuring hole of the pool body respectively and pressed. Then, the four movable screw shafts of the bottom plate are tightly fastened to the grooves of the cover plate and the nuts are tightened to fix them. Then, the simulants required for the migration test of each sample are added at once from the upper liquid inlet, and the nuts extending out of the liquid inlet and the temperature measuring hole of the cover plate are tightened. During or after the migration test, the transparent glass appearance allows the test personnel to observe the color, volume, etc. of the simulant and the sample in all directions. The temperature measuring hole on the top can also be unscrewed to detect the actual temperature of the liquid in the pool with a matching temperature measuring probe. It should be noted that the temperature measurement process should be as fast as possible to avoid volatilization of the solution in the pool body.

[0038] The multi-grid test module in this embodiment may adopt a grid shape such as a four-module type, a six-module type, or other divisible shapes;

[0039] In addition to being made of glass, the migration cell body in this embodiment can also be made of stainless steel, polytetrafluoroethylene or other metal materials;

[0040] The migration pool body in this embodiment can be shaped not only in square but also in circular, triangular and other shapes.

[0041] The above are only specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the scope of protection of the present invention.

Claims

1. A multi-module combined migration test pool, characterized by: It comprises a migration pool body (1), a bottom plate (2) and a cover plate (3), wherein the migration pool body (1) is arranged above the bottom plate (2) and is detachably connected to the bottom plate (2), and a cover plate (3) is arranged above the migration pool body (1), wherein the cover plate (3) has the same size as the bottom plate (2), and the bottom plate (2) has a larger size than the migration pool body (1); The migration pool body (1) is provided with a partition (11) to divide the inner cavity of the migration pool body (1) into a plurality of test modules, the top surface of each test module is provided with a liquid inlet (12) and a temperature measuring port (13), and the side wall of each test module is provided with a liquid outlet connected to a liquid outlet pipe (14); The bottom plate (2) is provided with a circle of cell body slots (21), the cell body slots (21) match the size of the migration cell body (1), and facilitate the bottom of the migration cell body (1) to be inserted into the cell body slots (21) for engagement, and a partition slot (22) is provided in the cell body slot (21), the partition slot (22) matches the partition (11), and the bottom of the partition (11) is engaged in the partition slot (22); The cover plate (3) is provided with partitions matching the test module, each partition is provided with a liquid inlet hole (31) corresponding to the liquid inlet (12) and a temperature measuring hole (32) corresponding to the temperature measuring port (13), a temperature measuring probe is inserted into the temperature measuring hole (32), and the caliber of the temperature measuring probe is consistent with that of the temperature measuring hole (32); the cover plate (3) and the base plate (2) are detachably connected.

2. The multi-module combined migration test pool according to claim 1, characterized in that: The migration pool body (1) is a circular pool body or a polygonal pool body.

3. The multi-module combined migration test pool according to claim 1, characterized in that: The cross-section of the partitions (11) is connected and distributed in a grid-like manner.

4. The multi-module combined migration test pool according to claim 1, characterized in that: The liquid outlet pipe (14) is provided with a liquid outlet valve (15) for controlling the opening and closing of the liquid outlet pipe (14) to facilitate obtaining the simulant liquid after the migration test.

5. The multi-module combined migration test pool according to claim 1, characterized in that: A sealing ring is provided in the cell body slot (21) to fasten and seal the migration cell body (1).

6. The multi-module combined migration test pool according to claim 1, characterized in that: A screw hole is provided in the middle of each of the four sides of the bottom plate (2), and the screw holes are distributed around the outside of the cell body slot (21). A movable screw shaft (23) is provided on the screw hole, and a nut (24) is sleeved on the movable screw shaft (23). The top of the movable screw shaft (23) is higher than the cover plate (3) above the migration cell body (1), so as to facilitate the fastening and connection of the cover plate (3).

7. The multi-module combined migration test pool according to claim 6, characterized in that: A screw shaft groove (33) is provided in the middle of each of the four edges of the cover plate (3). The position of the screw shaft groove (33) on each side of the cover plate (3) corresponds to the position of the movable screw shaft (23) on the side. The screw shaft groove (33) is used for the passage of the movable screw shaft (23). The outer edge diameter of the nut (24) on the movable screw shaft (23) is larger than the diameter of the screw shaft groove (33), so that the movable screw shaft (23) can be tightened with the nut (24) after passing through the cover plate (3), thereby realizing the fastening connection of the cover plate (3) to the migration pool body (1).

8. The multi-module combined migration test pool according to claim 1, characterized in that: The inner walls of the liquid inlet (12) and the temperature measuring port (13) are provided with sealing rings and threaded openings, and can be opened and closed by twisting a nut.

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