Device for measuring oxygen uptake capacity of oxygen absorbent

Abstract

The utility model relates to the technical field of oxygen uptake capacity measurement, in particular to a device for measuring the oxygen uptake capacity of an oxygen absorbent. The oxygen uptake capacity measuring device for the oxygen absorbent comprises a measuring water tank, an inverted measuring cylinder is arranged in the measuring water tank, a ventilation pipeline is connected to the measuring cylinder, the measuring water tank is connected with a water replenishing water tank through a communication pipeline, a manual lifting frame is connected to the water replenishing water tank, and a measuring cylinder fixing frame is connected to the measuring cylinder. An air valve is arranged on the ventilation pipeline and used for controlling communication between the interior of the measuring cylinder and external air. The measuring cylinder is fixed through the measuring cylinder fixing frame, after testing is completed, the communicating valve is opened, water in the water supplementing water tank is supplemented into the measuring water tank till the liquid level of the measuring cylinder is consistent with the liquid level of the measuring water tank, at the moment, it can be considered that the pressure in the measuring cylinder is the same as that of the outside, and therefore the problem of inaccurate measurement caused by liquid level difference can be avoided, and the measuring precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen absorption capacity measurement, in particular to an oxygen absorption capacity measurement device for oxygen absorbents. Background Technique

[0002] An oxygen absorbent, also known as an oxygen scavenger, is a substance used to remove oxygen from a closed environment (such as a package or container). Oxygen absorbents are widely used in the preservation and protection of foods, pharmaceuticals, and other products. They inhibit the growth of molds and aerobic bacteria by reducing the oxygen concentration inside the package, extend the shelf life of foods, and prevent oil rancidity, vitamin loss, and oxidative damage to other nutrients in foods.

[0003] When measuring the oxygen absorption capacity of an oxygen absorbent with existing devices, a graduated cylinder is mostly inverted, and the oxygen absorption capacity of the oxygen absorbent is judged directly according to the change in the liquid level inside the graduated cylinder after oxygen absorption. However, there is a problem of inaccuracy caused by the liquid level difference. The rising liquid level may be affected by factors such as gravity, resulting in a liquid level drop, and thus leading to inaccurate measurement. Content of the Utility Model

[0004] Based on the above deficiencies in the prior art, the purpose of the utility model is to provide an oxygen absorption capacity measurement device for oxygen absorbents. The graduated cylinder is fixed by a graduated cylinder fixing frame. After the test is completed, the connecting valve is opened, and the water in the water replenishing water tank is replenished into the measurement water tank until the liquid levels in the graduated cylinder and the measurement water tank are the same. At this time, it can be considered that the pressure inside the graduated cylinder is the same as that of the outside world, thereby avoiding the problem of inaccurate measurement caused by the liquid level difference and improving the measurement accuracy.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The oxygen absorption capacity measurement device for oxygen absorbents includes a measurement water tank. An inverted graduated cylinder is arranged inside the measurement water tank. An air vent pipe is connected to the graduated cylinder. The measurement water tank is connected to a water replenishing water tank through a connecting pipe. A manual lifting frame is connected to the water replenishing water tank. A graduated cylinder fixing frame is connected to the graduated cylinder.

[0007] The graduated cylinder is a precision graduated cylinder. After being inverted, it is sealed by water below and only connected to the air vent pipe above.

[0008] An air valve is arranged on the air vent pipe for controlling the connection between the inside of the graduated cylinder and the outside air.

[0009] Scale lines are arranged on the graduated cylinder. A deoxidizer is arranged inside the graduated cylinder, and the deoxidizer is located on one side close to the air vent pipe.

[0010] A measurement water tank support platform is arranged below the measurement water tank. The measurement water tank support platform is connected to the graduated cylinder fixing frame through a measurement water tank iron frame A.

[0011] A connecting valve is provided on the described connecting pipe to control the connection of the pipe between the measuring water tank and the water replenishing water tank.

[0012] The described manual lifting frame is connected to the measuring water tank iron frame B, and the measuring water tank iron frame B is fixed on the water replenishing water tank support platform. The manual lifting frame can drive the water replenishing water tank to move up and down on the measuring water tank iron frame B.

[0013] The working principle of the present utility model is as follows:

[0014] During measurement, first fix the oxygen absorbent at the bottom of the graduated cylinder and invert it into the water tank, open the air valve, adjust the connecting valve to release the water in the water replenishing water tank into the measuring water tank, adjust until the liquid level in the graduated cylinder is flush with the specified liquid level, close the connecting valve and the air valve, and the oxygen absorption capacity test of the oxygen absorbent begins; until within 3 hours, when the liquid level in the graduated cylinder hardly moves, raise the position of the water replenishing water tank through the manual lifting frame, open the connecting valve, introduce the water in the water replenishing water tank into the measuring water tank, and adjust the liquid level of the measuring water tank to be flush with the liquid level of the graduated cylinder, then the volume of the graduated cylinder can be read, and the difference between this volume and the initial volume is the oxygen absorption volume of this test. Among them, the graduated cylinder is a precision graduated cylinder. After the graduated cylinder is inverted, the lower part is sealed by water, and the upper part is only connected to the ventilation pipe.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] By using the oxygen absorption capacity measuring device of the present utility model, the graduated cylinder is fixed by the graduated cylinder fixing frame. After the test is completed, open the connecting valve, replenish the water in the water replenishing water tank into the measuring water tank until the liquid levels of the graduated cylinder and the measuring water tank are the same. At this time, it can be considered that the pressure inside the graduated cylinder is the same as that outside, thus avoiding the problem of inaccurate measurement caused by the liquid level difference and improving the measurement accuracy. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the oxygen absorption capacity measuring device of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the present utility model when the oxygen absorbent has completed oxygen absorption;

[0019] Figure 3 It is a schematic structural diagram of the present utility model after the test is completed;

[0020] In the figure: 1. Measuring water tank; 2. Graduated cylinder; 3. Water replenishing water tank; 4. Measuring water tank support platform; 5. Water replenishing water tank support platform; 6. Measuring water tank iron frame A; 7. Graduated cylinder fixing frame; 8. Measuring water tank iron frame B; 9. Manual lifting frame; 10. Ventilation pipe; 11. Air valve; 12. Deoxidizer; 13. Scale line; 14. Connecting pipe; 15. Connecting valve. Detailed Embodiments

[0021] In order to make the purpose and technical solutions of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] Embodiment 1

[0023] As Figure 1 shown, an oxygen absorber oxygen absorption capacity measuring device includes a measuring water tank 1. An inverted graduated cylinder 2 is provided inside the measuring water tank 1. A ventilation pipe 10 is connected to the graduated cylinder 2. The measuring water tank 1 is connected to a water replenishing tank 3 through a connecting pipe 14. A manual lifting frame 9 is connected to the water replenishing tank 3. A graduated cylinder fixing frame 7 is connected to the graduated cylinder 2. As Figures 2-3 shown, an air valve 11 is provided on the ventilation pipe 10 for controlling the connection between the inside of the graduated cylinder 2 and the outside air. Scale lines 13 are provided on the graduated cylinder 2. A deoxidizer 12 is provided inside the graduated cylinder 2, and the deoxidizer 12 is located on the side close to the ventilation pipe 10. A measuring water tank support platform 4 is provided below the measuring water tank 1. The measuring water tank support platform 4 is connected to the graduated cylinder fixing frame 7 through a measuring water tank iron frame A6. A connecting valve 15 is provided on the connecting pipe 14 for controlling the pipe connection between the measuring water tank 1 and the water replenishing tank 3. The manual lifting frame 9 is connected to a measuring water tank iron frame B8, and the measuring water tank iron frame B8 is fixed on a water replenishing tank support platform 5. The manual lifting frame 9 can drive the water replenishing tank 3 to move up and down on the measuring water tank iron frame B8.

[0024] The above-mentioned oxygen absorber oxygen absorption capacity measuring device, during operation, includes the following steps:

[0025] (1) During measurement, first fix the oxygen absorber at the bottom of the graduated cylinder 2 and invert it into the measuring water tank 1. Open the air valve 11, adjust the connecting valve 15 to release the water in the water replenishing tank 3 into the measuring water tank 1, and adjust until the liquid level in the graduated cylinder 2 is flush with the specified liquid level. Then close the connecting valve 15 and the air valve 11, and the oxygen absorption capacity test of the oxygen absorber begins; (2) Until the liquid level in the graduated cylinder 2 remains basically unchanged within 3 hours, raise the position of the water replenishing tank 3 through the manual lifting frame 9, open the connecting valve 15, introduce the water in the water replenishing tank 3 into the measuring water tank 1, and adjust the liquid level of the measuring water tank 1 to be flush with the liquid level of the graduated cylinder 2. Then the volume of the graduated cylinder can be read, and the difference between this volume and the initial volume is the oxygen absorption volume of this test.

Claims

1. An oxygen absorption capacity measuring device for an oxygen absorber, characterized in that, It includes a measuring water tank (1). An inverted graduated cylinder (2) is arranged inside the measuring water tank (1). A ventilation pipe (10) is connected to the graduated cylinder (2). The measuring water tank (1) is connected to a water replenishing tank (3) through a communicating pipe (14). A manual lifting frame (9) is connected to the water replenishing tank (3). A graduated cylinder fixing frame (7) is connected to the graduated cylinder (2).

2. The oxygen absorption capacity measuring device for the oxygen absorber according to claim 1, characterized in that, An air valve (11) is arranged on the ventilation pipe (10) and is used to control the connection between the inside of the graduated cylinder (2) and the outside air.

3. The oxygen absorption capacity measuring device for the oxygen absorbent according to claim 1, characterized in that, Scale lines (13) are arranged on the graduated cylinder (2). A deoxidizer (12) is arranged inside the graduated cylinder (2), and the deoxidizer (12) is located on the side close to the ventilation pipe (10).

4. The oxygen absorption capacity measuring device for the oxygen absorber according to claim 1, characterized in that A measuring water tank support platform (4) is arranged below the measuring water tank (1). The measuring water tank support platform (4) is connected to the graduated cylinder fixing frame (7) through a measuring water tank iron frame A (6).

5. The oxygen absorption capacity measuring device for the oxygen absorber according to claim 1, characterized in that, A communicating valve (15) is arranged on the communicating pipe (14) and is used to control the pipe connection between the measuring water tank (1) and the water replenishing tank (3).

6. The oxygen absorption capacity measuring device for the oxygen absorbent according to claim 1, wherein, The manual lifting frame (9) is connected to a measuring water tank iron frame B (8), and the measuring water tank iron frame B (8) is fixed on a water replenishing tank support platform (5).

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