A device for determining the peroxide value of an edible oil

Abstract

The utility model discloses a kind of edible oil peroxide value determination devices, including shake even power frame, grease homogenization transmission group and oil sample spin clip cabin;The shake even power frame includes mechanical arm, motor and worm, the motor is located mechanical arm outside, and motor output end is connected with worm;The grease homogenization transmission group includes turbine and rotating shaft, the turbine is engaged with worm, the rotating shaft upper end is connected with turbine, lower end is connected with oil sample spin clip cabin;The oil sample spin clip cabin is used to accommodate and fixedly mount the closed container of edible oil;Wherein, the shake even power frame rotates turbine by worm drive, makes rotating shaft drive oil sample spin clip cabin rotation, in turn drive rotating shaft rotation, rotating shaft drives oil sample spin clip cabin rotation at this time, to rotate the edible oil in closed container, cooperation through the swing of mechanical arm, realize the shaking of edible oil, make it fully mixed, without manual operation, save artificial and time cost.

Description

Technical Field

[0001] This utility model specifically relates to a device for measuring the peroxide value of edible oil. Background Technology

[0002] The peroxide value of edible oils is a core indicator for evaluating the degree of oxidative rancidity of oils, and its measurement results directly affect product quality assessment and shelf-life prediction. Currently, laboratories commonly use titration or colorimetric methods. Both methods require that, after adding the reagents, the sealed container containing the mixture of edible oil and solvent be thoroughly shaken to ensure complete reaction between the peroxide and potassium iodide or the colorimetric reagent, thus guaranteeing accurate data.

[0003] In current technologies, the shaking process relies on manual operation by laboratory personnel, which is labor-intensive and inefficient. The shaking frequency and amplitude vary significantly between different personnel, and even between the same personnel at different times, resulting in excessively high peroxide values ​​for the same oil sample, frequent retesting, and extended testing cycles. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the peroxide value of edible oils, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a device for determining the peroxide value of edible oil, comprising a shaking power frame, an oil homogenization transmission assembly, and an oil sample vortex clamping chamber; the shaking power frame includes a robotic arm, a motor, and a worm gear, the motor being located outside the robotic arm, and its output end being connected to the worm gear; the oil homogenization transmission assembly includes a turbine and a rotating shaft, the turbine meshing with the worm gear, the upper end of the rotating shaft being connected to the turbine, and the lower end being connected to the oil sample vortex clamping chamber; the oil sample vortex clamping chamber is used to accommodate and fix a sealed container containing edible oil; The shaking power frame drives the turbine to rotate via a worm gear, which in turn causes the rotating shaft to rotate the oil sample vortex chamber, thereby achieving automatic shaking of the edible oil in the sealed container.

[0006] Preferably, the oil sample swivel clamp chamber is a cylindrical component with an open bottom, and its inner wall has an internal thread at the lower end. A base is provided at the lower opening of the oil sample swivel clamp chamber.

[0007] Preferably, the outer periphery of the base is provided with an external thread that matches the internal thread, and the upper surface of the base is connected to the lower top plate through a first compression spring to apply elastic support force to the bottom of the sealed container.

[0008] Preferably, the top of the oil sample clamping chamber is connected to the upper top plate by a second compression spring, and an elastic clamping space is formed between the upper and lower top plates for axially fixing sealed containers of different heights.

[0009] Preferably, the rotating shaft is coaxially arranged with the oil sample vortex chamber, and the lower end of the rotating shaft is rigidly connected to the top of the oil sample vortex chamber, so as to directly transmit the rotational motion of the turbine to the oil sample vortex chamber.

[0010] Preferably, the worm and the turbine form a self-locking worm gear pair, used to rotate and lock the oil sample vortex chamber when the motor stops.

[0011] Preferably, the motor is fixed to the outside of the robotic arm via a flange, and its output shaft is coaxially connected to the worm gear.

[0012] The technical effects and advantages of this utility model are as follows: This edible oil peroxide value measuring device places a sealed container containing edible oil in an oil sample rotary clamping chamber. The measuring position can be changed by the swing of the robotic arm. After the motor is started, the motor drives the worm gear to rotate. The worm gear drives the turbine to rotate after meshing with the worm wheel, which in turn drives the rotating shaft to rotate. At this time, the rotating shaft drives the oil sample rotary clamping chamber to rotate, thereby rotating the edible oil in the sealed container. Combined with the swing of the robotic arm, the edible oil is shaken and thoroughly mixed. No manual operation is required, saving labor and time costs. Attached Figure Description

[0013] Figure 1 This is a first-view structural diagram of the entire present invention; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a schematic diagram of the worm gear structure of this utility model; Figure 4 This is a schematic diagram of the oil sample vortex clamping chamber of this utility model; Figure 5 This is a schematic diagram of the structure of the top plate of this utility model.

[0014] In the diagram: 1. Oil sample clamping chamber; 2. Robotic arm; 3. Worm gear; 4. Worm wheel; 5. Rotating shaft; 6. Internal thread; 7. Base; 8. External thread; 9. First compression spring; 10. Second compression spring; 11. Upper top plate; 12. Motor; 13. Lower top plate; 14. Handle. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] refer to Figure 1 , Figure 2 and Figure 3As shown, the device includes a shaking power frame, an oil homogenization transmission assembly, and an oil sample vortex clamping chamber 1. The shaking power frame includes a robotic arm 2, a motor 12, and a worm gear 3. The motor 12 is located outside the robotic arm 2, and its output end is connected to the worm gear 3. The oil homogenization transmission assembly includes a turbine and a rotating shaft 5. The turbine meshes with the worm gear 3, and the upper end of the rotating shaft 5 is connected to the turbine, while its lower end is connected to the oil sample vortex clamping chamber 1. The oil sample vortex clamping chamber 1 is used to contain and fix a sealed container filled with edible oil. The shaking power frame drives the turbine to rotate via the worm gear 3, causing the rotation... Shaft 5 drives the oil sample vortex chamber 1 to rotate, thereby automatically shaking the edible oil in the sealed container. The sealed container containing edible oil is placed in the oil sample vortex chamber 1. The measurement position can be changed by the swing of the robotic arm 2. After the motor 12 is started, the motor 12 drives the worm gear 3 to rotate. The worm gear 3 drives the turbine to rotate after meshing with the worm wheel 4, which in turn drives the rotating shaft 5 to rotate. At this time, the rotating shaft 5 drives the oil sample vortex chamber 1 to rotate, thereby rotating the edible oil in the sealed container. With the swing of the robotic arm 2, the edible oil is shaken and thoroughly mixed.

[0017] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the oil sample swivel clamp 1 is a cylindrical component with an opening at the lower end. The lower end of its inner wall is provided with an internal thread 6. A base 7 is provided at the lower opening of the oil sample swivel clamp 1. When changing samples, simply unscrew the base 7, and the bottle can be taken out or put in horizontally and laterally, avoiding interference from the robotic arm 2. The base 7 has an external thread 8 that matches the internal thread 6 on its outer periphery. The upper surface of the base 7 is connected to the lower top plate 13 through a first compression spring 9 to apply elastic support force to the bottom of the sealed container. The top of the oil sample swivel clamping chamber 1 is connected to the upper top plate 11 through a second compression spring 10. An elastic clamping space is formed between the upper top plate 11 and the lower top plate 13 to fix sealed containers of different heights axially. When the sealed container is installed in the oil sample swivel clamping chamber 1, the top of the sealed container will abut against the upper top plate 11, causing the second compression spring 10 to be squeezed until the sealed container is fully installed in the oil sample swivel clamping chamber 1. After rotating the base 7, the lower top plate 13 will abut against the bottom of the oil sample swivel clamping chamber 1. Under the elastic force of the first compression spring 9 and the second compression spring 10, the upper top plate 11 and the lower top plate 13 limit and fix the sealed container. The rotating shaft 5 is coaxially arranged with the oil sample swirl chamber 1, and the lower end of the rotating shaft 5 is rigidly connected to the top of the oil sample swirl chamber 1 to directly transmit the rotational motion of the turbine to the oil sample swirl chamber 1. The lower end of the rotating shaft 5 is directly flanged and rigidly connected to the center of the chamber top, with the axes coinciding. The motor 12 can be stopped, started, and reversed to transmit the rotational motion to the oil sample swirl chamber 1, resulting in a smooth rotational speed waveform. The worm gear 3 and the turbine form a self-locking worm wheel 4 and worm gear 3 pair, which is used to lock the rotation of the oil sample swirl chamber 1 when the motor 12 stops. After shaking, the oil sample swirl chamber 1 will continue to rotate freely due to inertia. The liquid in the oil sample swirl chamber 1 will slide against the wall due to inertia and re-separate. The experimenter has to shake it a second time. Utilizing the reverse self-locking characteristic of the worm gear 3 to the turbine, the motor 12 is stopped immediately, and the sealed container does not rebound, and there is no secondary stratification. The motor 12 is fixed to the outside of the robotic arm 2 via a flange, and its output shaft is coaxially connected to the worm gear 3. The motor 12 is directly locked to the outside of the forearm of the robotic arm 2 using a flange or bracket, so that the axis of the motor 12 is parallel to the axis of the arm. The cable runs along the groove of the arm, which improves the integrity of the structure. A handle 14 is provided on the outside of the base 7 to facilitate the rotation of the base 7. After the edible oil in the sealed container is shaken well, the iodine that has precipitated is immediately titrated with a standard sodium thiosulfate solution (0.002 mol / L standard titration solution is used when the estimated peroxide value is 0.15 g / 100 g or less; 0.01 mol / L standard titration solution is used when the estimated peroxide value is greater than 0.15 g / 100 g). When the solution turns pale yellow, 1 ml of starch indicator is added, and the titration continues while shaking vigorously until the blue color of the solution disappears. A blank test is performed at the same time.

[0018] In use, hold the base 7 and rotate it. Unscrew the base 7 counterclockwise and place the sealed container with added reagents upright into the oil sample rotary clamp chamber 1. Place the bottom of the bottle in the center of the lower top plate 13. Hold the base 7 with one hand and push it upward to initially compress the first compression spring 9. Tighten the base 7 clockwise until you feel obvious resistance. At this time, the upper top plate 11 contacts the shoulder of the bottle, and the second compression spring 10 is compressed simultaneously, forming an elastic clamping action between the upper and lower parts. The motor 12 drives the worm gear 3 to rotate. The worm gear 3 drives the turbine to rotate after meshing with the worm wheel 4, which in turn drives the rotating shaft 5 to rotate. At this time, the rotating shaft 5 drives the oil sample rotary clamp chamber 1 to rotate, thereby rotating the edible oil in the sealed container and achieving even mixing.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model.

Claims

1. A device for determining the peroxide value of edible oil, characterized in that, The device includes a shaking power frame, an oil homogenization transmission assembly, and an oil sample vortex clamping chamber (1). The shaking power frame includes a robotic arm (2), a motor (12), and a worm gear (3). The motor (12) is located outside the robotic arm (2), and its output end is connected to the worm gear (3). The oil homogenization transmission assembly includes a turbine and a rotating shaft (5). The turbine meshes with the worm gear (3), and the upper end of the rotating shaft (5) is connected to the turbine, and the lower end is connected to the oil sample vortex clamping chamber (1). The oil sample vortex clamping chamber (1) is used to contain and fix a sealed container filled with edible oil. The shaking power frame drives the turbine to rotate via the worm gear (3), which in turn causes the rotating shaft (5) to rotate the oil sample vortex chamber (1), thereby achieving automatic shaking of the edible oil in the sealed container.

2. The edible oil peroxide value measuring device according to claim 1, characterized in that: The oil sample swivel clamp chamber (1) is a cylindrical component with an opening at the lower end, and its inner wall is provided with an internal thread (6) at the lower end. A base (7) is provided at the lower opening of the oil sample swivel clamp chamber (1).

3. The edible oil peroxide value measuring device according to claim 2, characterized in that: The base (7) has an external thread (8) that matches the internal thread (6) on its outer periphery. The upper surface of the base (7) is connected to the lower top plate (13) through a first compression spring (9) to apply elastic support force to the bottom of the sealed container.

4. The edible oil peroxide value measuring device according to claim 3, characterized in that: The top of the oil sample swivel clamping chamber (1) is connected to the upper top plate (11) by a second compression spring (10). An elastic clamping space is formed between the upper top plate (11) and the lower top plate (13) for axially fixing sealed containers of different heights.

5. The edible oil peroxide value measuring device according to claim 1, characterized in that: The rotating shaft (5) is coaxially arranged with the oil sample vortex clamping chamber (1), and the lower end of the rotating shaft (5) is rigidly connected to the top of the oil sample vortex clamping chamber (1) so as to directly transmit the rotational motion of the turbine to the oil sample vortex clamping chamber (1).

6. The edible oil peroxide value measuring device according to claim 1, characterized in that: The worm (3) and the turbine form a self-locking worm wheel (4) worm (3) pair, which is used to rotate and lock the oil sample vortex clamp (1) when the motor (12) stops.

7. The edible oil peroxide value measuring device according to claim 1, characterized in that: The motor (12) is fixed to the outside of the robotic arm (2) by a flange, and its output shaft is coaxially connected to the worm gear (3).

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