Olive oil acid value detection device

Abstract

The utility model provides an olive oil acid value detection device. The olive oil acid value detection device comprises a box body with an inner cavity, a fixed disc arranged in the box body, a rotating disc pivoted relative to the fixed disc, a first driving part for driving the rotating disc to rotate, a vibration mechanism connected below the rotating disc, and a second driving part for driving the rotating disc to vibrate. At least two conical flasks which are linearly arranged are arranged on the rotating disc, a basic burette is arranged on the fixed disc, and a flow adjusting assembly is arranged at the liquid output end of the basic burette and is used for adjusting the volume of liquid entering the conical flasks. When the first driving part drives the rotating disc to rotate, the two conical flasks are alternately arranged below the alkali burette, and the second driving part and the vibrating mechanism rotate along with the rotating disc. A communicating pipeline and a liquid suction pump arranged on the communicating pipeline are arranged between the two conical flasks. Errors caused by visual judgment of solvent color changes are reduced, the accuracy of the acid value of olive oil is guaranteed, and automatic detection is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural product detection equipment technical field, especially relate to a kind of olive oil acid value detection device. BACKGROUND

[0002] Olive oil is extracted from fresh olive fruit after a series of steps such as centrifugal pressing, and it is rich in unsaturated fatty acids (oleic acid accounts for 55%~83%), polyphenols and vitamins and other nutrients, and it has many benefits such as antioxidant, cancer prevention, prevention of cardiovascular and cerebrovascular diseases, cholesterol regulation and physiological function regulation of human body.

[0003] Acid value is an important indicator for evaluating the freshness of olive oil, which is used to evaluate its freshness, quality and safety. Acid value is an indicator for measuring the content of free fatty acids in oil, which reflects the degree of hydrolysis of oil and the content of hydrolysis products. The higher the acid value, the worse the quality of the oil, which may be due to the hydrolysis reaction of the oil during storage or processing, resulting in an increase in the content of free fatty acids.

[0004] The main methods for detecting the acid value of existing olive oil include acid-base titration method and neutralization method. The acid-base titration method is to determine the acidity value by titrating acid-base solution, and the neutralization method is to neutralize a certain amount of free fatty acids in oil with a known standard concentration of potassium hydroxide. The acid value of oil is calculated according to the amount of potassium hydroxide required for titration, which is simple and easy to operate.

[0005] However, this method has certain limitations. The determination error caused by the weak change of indicator color is large, especially in oil with deep color or turbidity, the difference in end point judgment between individuals increases, and the time required for existing neutralization titration is long, which cannot meet the requirement of rapid detection. CONTENT OF THE UTILITY MODEL

[0006] Therefore, the utility model aims to provide an olive oil acid value detection device to achieve automatic detection and improve the accuracy of detection data.

[0007] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0008] An olive oil acid value detection device, comprising a box body with an inner cavity, a fixed disc arranged in the box body, a rotating disc pivoted relative to the fixed disc, a first driving part for driving the rotating disc to rotate, a vibration mechanism connected below the rotating disc, and a second driving part for driving the rotating disc to vibrate;

[0009] At least two conical flasks are arranged on the rotating disc in straight line, an alkaline burette is arranged on the fixed disc, a flow regulating assembly is arranged at the liquid output end of the alkaline burette, and the flow regulating assembly is used to adjust the volume of liquid entering the conical flask;

[0010] When the first driving part drives the rotating disc to rotate, two conical bottles are alternately arranged below the alkaline burette, and the second driving part and the vibration mechanism rotate with the rotating disc;

[0011] A communication pipeline is arranged between the two conical bottles, and a liquid suction pump is arranged on the communication pipeline.

[0012] Further, the vibration mechanism comprises a sleeve connected below the rotating disc, a socket slidingly connected in the sleeve, a penetrating shaft extending downward is arranged on the sleeve, and a receiving groove accommodating the penetrating shaft is arranged in the middle of the socket.

[0013] A first elastic member is arranged outside the penetrating shaft and in the receiving groove.

[0014] A driving shaft is arranged on the power output end of the second driving part, an eccentric arm is arranged on the driving shaft, a connecting arm is pivotally connected in the socket, and the connecting arm is pivotally connected with the eccentric arm.

[0015] When the second driving part drives the driving shaft to rotate, the socket reciprocally slides into the sleeve, the first elastic member stores or releases energy between the penetrating shaft and the socket, and the rotating disc moves up and down relative to the box.

[0016] Further, the first driving part is connected to the rotating disc through a first mounting seat, a second mounting seat is arranged below the first mounting seat, and the second mounting seat is bolted with the second driving part.

[0017] A second elastic member is arranged on the second mounting seat, and the other end of the second elastic member is connected to the rotating disc.

[0018] The second elastic member is arranged on both sides of the first driving part and stores or releases energy due to the rotation of the driving shaft.

[0019] Further, two vibration mechanisms are respectively arranged at both ends of the rotating disc, and two eccentric arms are respectively arranged on the driving shaft.

[0020] Further, a fixed plate is respectively arranged at both ends of the driving shaft, the upper end of the fixed plate abuts against the fixed disc, and the lower end of the fixed plate abuts against the box.

[0021] The driving shaft is inserted into the fixed plate, and a deep groove ball bearing is arranged between the driving shaft and the fixed plate.

[0022] Further, a plain bearing is arranged between the fixed plate and the fixed disc, and / or between the fixed plate and the box.

[0023] Further, the flow regulating assembly is connected to the alkaline burette through a connecting frame, and the flow regulating assembly comprises a box body with a cavity, wherein a through hole is arranged on the upper portion of the box body and is arranged directly below the liquid output end of the alkaline burette.

[0024] A liquid storage box for receiving liquid is arranged in the box body, and a terminal burette is arranged at the lower end of the liquid storage box, and an output pipeline is arranged between the liquid storage box and the terminal burette, a circulating pipeline is connected in parallel to the output pipeline, a first pressure tank is arranged on the output pipeline, and a second pressure tank is arranged on the circulating pipeline.

[0025] The inlet pressure of the first pressure tank is less than the outlet pressure of the second pressure tank, and the outlet pressure of the first pressure tank is greater than the inlet pressure of the second pressure tank.

[0026] Further, a flow regulating valve is arranged at one end of the circulating pipeline close to the outlet of the output pipeline, and a one-way valve is arranged at one end of the circulating pipeline close to the inlet of the output pipeline.

[0027] Further, a flow sensor is arranged at one end of the output pipeline.

[0028] Further, a third driving part is arranged above the box body, a pressing plate is connected to the power output end of the third driving part, the pressing plate is arranged in the inner cavity, and the third driving part drives the pressing plate to move up and down along the height direction of the box body.

[0029] The pressing plate is provided with accommodating holes for accommodating two conical bottles, and when the rotating disc rotates, the pressing plate abuts against the conical bottles.

[0030] Compared with the prior art, the utility model has the following advantages:

[0031] The olive oil acid value detection device is characterized in that two conical bottles are arranged on the rotating disc, one conical bottle is used for placing an olive oil sample, the other conical bottle is used for preparing a petroleum ether isopropyl alcohol mixed solution and a phenolphthalein indicator, potassium hydroxide ethanol solution is titrated into isopropyl alcohol solution, the flow regulating assembly is used for adjusting the liquid volume of each titration, the rotating disc and the vibrating mechanism are used for dissolving the potassium hydroxide solution after each titration, titration is performed again until the color change of the solution in the conical bottle reaches a standard, and a blank test volume reading is obtained. The liquid suction pump and the communication pipeline are used for sucking the isopropyl alcohol solution obtained through the blank test into the isopropyl alcohol solution for placing the olive oil sample, and the first driving part and the second driving part are used for fully mixing the solution in the conical bottle.

[0032] Then, the conical flask is rotated to below the alkaline burette, the potassium hydroxide ethanol solution is continuously dropped, and the volume of the titration liquid is subdivided for multiple titrations through the adjustment of the flow regulating assembly, finally, an accurate titration volume reading is obtained, so that the error caused by visual judgment of the color change of the solvent is reduced, the accuracy of the acid value of the olive oil is ensured, and the automatic detection is realized, and the manual labor intensity is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0033] The drawings constituting a part of the present application serve to provide a further understanding of the present application, the illustrative embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0034] Figure 1 A structural arrangement schematic view of the olive oil acid value detection device in a state that the pressure plate is pressed against the conical flask is shown in the present application;

[0035] Figure 2 A structural arrangement schematic view of the olive oil acid value detection device in a state that the pressure plate is separated from the conical flask is shown in the present application;

[0036] Figure 3 A top view schematic view of the fixed disc, the rotating disc and the box is shown in the present application;

[0037] Figure 4 A connection schematic view of the connecting frame and the flow regulating assembly is shown in the present application;

[0038] Figure 5 A structural schematic view of the flow regulating assembly is shown in the present application.

[0039] Explanation of reference signs:

[0040] 1, box; 2, fixed disc; 3, rotating disc; 4, first driving part; 5, vibration mechanism; 6, second driving part; 7, conical flask; 8, alkaline burette; 9, flow regulating assembly; 10, communication pipeline; 11, liquid suction pump; 12, third driving part; 13, pressure plate; 14, first liquid storage tank; 15, second liquid storage tank; 16, connecting frame;

[0041] 501, sleeve; 502, socket; 503, penetrating shaft; 504, first elastic member; 505, driving shaft; 506, eccentric arm; 507, connecting arm; 508, first mounting seat; 509, second mounting seat; 510, second elastic member; 511, fixed plate; 512, deep groove ball bearing;

[0042] 901, box body; 902, through hole; 903, liquid storage box; 904, terminal dropper; 905, output pipeline; 906, circulating pipeline; 907, first pressure tank; 908, second pressure tank; 909, flow regulating valve; 910, check valve; 911, flow sensor;

[0043] 1301, accommodating hole;

[0044] 5021, accommodating groove. DETAILED DESCRIPTION

[0045] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0046] In the description of the utility model, it should be noted that the terms "upper", "lower", "inner", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms "mounting", "connecting", "connection", "connecting member" should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with the specific circumstances.

[0048] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0049] The embodiment relates to an olive oil acid value detection device, and as a whole, as shown in the figure, Figures 1 to 3 It comprises a box body 1 with an inner cavity, a fixed disc 2 arranged in the box body 1, a rotating disc 3 pivoted relative to the fixed disc 2, a first driving part 4 for driving the rotating disc 3 to rotate, a vibration mechanism 5 connected below the rotating disc 3, and a second driving part 6 for driving the rotating disc 3 to vibrate.

[0050] The rotating disc 3 is provided with at least two linearly arranged conical bottles 7, the fixed disc 2 is provided with an alkaline burette 8, the liquid output end of the alkaline burette 8 is provided with a flow adjusting assembly 9 for adjusting the liquid volume entering the conical bottle 7. When the first driving part 4 drives the rotating disc 3 to rotate, the two conical bottles 7 are alternately arranged below the alkaline burette 8, and the second driving part 6 drives the vibrating mechanism 5 to rotate with the rotating disc 3. The two conical bottles 7 are provided with a communication pipeline 10 and a liquid suction pump 11 arranged on the communication pipeline 10.

[0051] The olive oil acid value detection device described in the embodiment is characterized in that two conical bottles 7 are arranged on the rotating disc 3, one of which is used to place the olive oil sample, and the other is used to prepare the petroleum ether isopropyl alcohol mixed solution and the phenolphthalein indicator. The potassium hydroxide ethanol solution is titrated into the isopropyl alcohol solution, the liquid volume of each titration is adjusted by the flow adjusting assembly 9, the solution is dissolved after the potassium hydroxide solution is added each time by rotating the rotating disc 3 and the vibrating mechanism 5, and then titration is performed again until the color change of the solution in the conical bottle 7 reaches the standard, and the blank test volume reading is obtained. The isopropyl alcohol solution prepared in the previous step is sucked into the isopropyl alcohol solution containing the olive oil sample through the liquid suction pump 11 and the communication pipeline 10, and then the solution in the conical bottle 7 is fully mixed by the first driving part 4 and the second driving part 6.

[0052] Then, the conical bottle 7 is rotated to be below the alkaline burette 8, the potassium hydroxide ethanol solution is continuously added, and the volume of the titration liquid is subdivided to realize multiple titrations by adjusting the flow adjusting assembly 9, so as to obtain the accurate titration volume reading, thereby reducing the error caused by visual judgment of the color change of the solvent, ensuring the accuracy of the olive oil acid value, and realizing automatic detection and reducing the labor intensity.

[0053] Based on the above overall introduction, an exemplary structure of the olive oil acid value detection device of the embodiment is shown in Figures 1 to 3 The box body 1 is shaped as a rectangular structure, and the box body 1 of the embodiment is made of transparent plastic material for easy observation. Alternatively, stainless steel or alloy steel material can be used, and a window is arranged at the position of the conical bottle 7 for easy detection. Of course, when observing the color change of the solution in the conical bottle 7, a color card can also be used for comparison to improve the timeliness and accuracy of the solution change.

[0054] As a preferred embodiment, as shown in Figures 1 to 3As shown, the vibration mechanism 5 includes a sleeve 501 connected below the rotating disk 3, and a socket 502 slidably connected inside the sleeve 501. The sleeve 501 has a downwardly extending through shaft 503, and the socket 502 has a receiving groove 5021 in the middle to accommodate the through shaft 503. A first elastic member 504 is sleeved on the outside of the through shaft 503, and the first elastic member 504 is disposed in the receiving groove 5021.

[0055] Furthermore, the power output end of the second drive unit 6 is provided with a drive shaft 505, on which an eccentric arm 506 is provided. A connecting arm 507 is pivotally connected inside the socket 502, and the connecting arm 507 is pivotally connected to the eccentric arm 506. When the second drive unit 6 drives the drive shaft 505 to rotate, the socket 502 slides back and forth into the sleeve 501, and the first elastic element 504 stores or releases energy between the through shaft 503 and the socket 502; the rotating disk 3 moves up and down relative to the housing 1.

[0056] like Figures 1 to 3 As shown, in this embodiment, the first drive unit 4 adopts a servo motor, whose power output shaft is connected to the rotating disk 3. The rotating disk 3 is formed into a circular flat plate structure. The fixed disk 2 is adapted to the inner cavity and is fixedly connected in the box 1. The fixed disk 2 is provided with a circular hole for holding the rotating disk 3.

[0057] Furthermore, still as Figures 1 to 3 As shown, the first drive unit 4 is connected to the rotating disk 3 via the first mounting base 508. A second mounting base 509 is provided below the first mounting base 508. The second mounting base 509 is bolted to the second drive unit 6. A second elastic element 510 is provided on the second mounting base 509. The other end of the second elastic element 510 is connected to the rotating disk 3. The second elastic element 510 is located on both sides of the first drive unit 4 and stores or releases energy due to the rotation of the drive shaft 505.

[0058] Still Figures 1 to 3 As shown, the second drive unit 6 is a shaftless motor, fixedly connected to the second mounting base 509. The first mounting base 508 is connected to the rotating disk 3, and the first mounting base 508 and the second mounting base 509 are fixed together. When the first drive unit 4 rotates, the second drive unit 6 and the crushing mechanism rotate accordingly.

[0059] As described above, the operating principle of the crushing mechanism in this embodiment is as follows: The second drive unit 6 is activated, driving the drive shaft 505 to rotate. Two eccentric arms 506 are spaced apart on the drive shaft 505, and a connecting arm 507 is connected between the two eccentric arms 506 via a pivot pin. To avoid interference, the drive shaft 505 between the two eccentric arms 506 is disconnected. When the drive shaft 505 rotates, the connecting arm 507 rotates at the interval between the two eccentric arms 506, causing the socket 502 to slide back and forth within the sleeve 501. This achieves the up-and-down vibration of the rotating disk 3.

[0060] As shown in Figures 1 to 2 , the first elastic member 504 adopts a telescopic spring and is arranged between the penetrating shaft 503 and the socket 502, which not only plays a certain buffering role to prevent the solution from splashing out, but also can increase the power of the rotating disc 3 to reset due to the elastic energy release, thereby improving the vibration effect.

[0061] As shown in Figures 1 to 2 , two vibration mechanisms 5 are arranged at both ends of the rotating disc 3, and two eccentric arms 506 are arranged on the drive shaft 505. By arranging two vibration mechanisms 5, the vibration effect and stability of the two conical bottles 7 are ensured.

[0062] As a preferred embodiment, as shown in Figure 3 , four conical bottles 7 are arranged on the rotating disc 3 of the embodiment, and a communication pipeline 10 and a liquid suction pump 11 are arranged between two opposite conical bottles 7, and the two communication pipelines 10 are staggered. By such arrangement, the monitoring efficiency of the olive oil acid value detection can be improved, and the requirement of rapid detection can be met due to the implementation of the automatic device, and two groups of olive oil samples are detected each time. Of course, a plurality of conical bottles 7 can be arranged on the rotating disc 3 to meet the demand, and the specific condition is adjusted according to the on-site demand, which is not limited here.

[0063] Further, as shown in Figures 1 to 2 , the fixed plates 511 are arranged at both ends of the drive shaft 505, the upper end of the fixed plate 511 abuts against the fixed disc 2, and the lower end abuts against the box body 1, the drive shaft 505 is inserted into the fixed plate 511, and the deep groove ball bearing 512 is arranged between the drive shaft 505 and the fixed plate 511. By arranging the fixed plate 511, the stability of the drive shaft 505 during rotation is increased, and the sliding of the socket 502 is prevented from being stuck.

[0064] Further, the fixed plate 511 is arranged between the fixed disc 2 and the box body 1. Since the fixed plate 511 rotates with the rotating disc 3, the planar bearing is arranged to improve the rotation flexibility of the rotating disc 3, and the abutment of the fixed plate 511 with the fixed disc 2 and the box body 1 can ensure the rotation effect of the rotating disc 3 and improve the stability of the device.

[0065] As a preferred embodiment, as shown in Figures 1 to 2 , the third driving part 12 is arranged above the box body 1, the power output end of the third driving part 12 is connected with the pressing plate 13, the pressing plate 13 is arranged in the inner cavity, and the third driving part 12 drives the pressing plate 13 to move up and down along the height direction of the box body 1. The pressing plate 13 is provided with a containing hole 1301 for containing two conical bottles 7, and the pressing plate 13 abuts against the conical bottle 7 when the rotating disc 3 rotates. By arranging the pressing plate 13, the side turning of the conical bottle 7 during rotation and vibration is avoided, and the use effect of the equipment is improved.

[0066] As shown in Figures 1 to 5 The flow regulating assembly 9 is connected to the alkaline burette 8 through the connecting frame 16, and the flow regulating assembly 9 comprises a box body 901 with a cavity, the box body 901 is provided with a through hole 902 at the upper portion, the through hole 902 is located directly below the liquid output end of the alkaline burette 8, a liquid storage box 903 for receiving liquid is arranged in the box body 901, a terminal burette 904 is arranged at the lower end of the liquid storage box 903, an output pipeline 905 is arranged between the liquid storage box 903 and the terminal burette 904, a circulation pipeline 906 is connected in parallel to the output pipeline 905, a first pressure tank 907 is arranged on the output pipeline 905, a second pressure tank 908 is arranged on the circulation pipeline 906, the inlet pressure of the first pressure tank 907 is less than the outlet pressure of the second pressure tank 908, and the outlet pressure of the first pressure tank 907 is greater than the inlet pressure of the second pressure tank 908.

[0067] Further, the circulation pipeline 906 is provided with a flow regulating valve 909 at one end close to the outlet of the output pipeline 905, and is provided with a one-way valve 910 at one end close to the inlet of the output pipeline 905.

[0068] As shown in Figure 5 The liquid flow rate of the alkaline burette 8 is a constant value, the liquid is pressurized and delivered by arranging the first pressure tank 907, and the liquid volume entering the circulation pipeline 906 is controlled by arranging the circulation pipeline 906 and the flow regulating valve 909, and the remaining liquid is titrated into the conical flask 7 through the outlet of the output pipeline 905. The second pressure tank 908 is arranged on the circulation pipeline 906, the inlet pressure of the second pressure tank 908 is adjusted to be less than the outlet pressure of the first pressure tank 907, so that the liquid flows through the circulation pipeline 906, the outlet pressure of the second pressure tank 908 is greater than the inlet pressure of the first pressure tank 907, when the solution in the second pressure tank 908 reaches the pressure value, the liquid flows back to the output pipeline 905 from the second pressure tank 908 for circulation. In addition, in order to prevent backflow, the one-way valve 910 is arranged at the inlet of the first pressure tank 907 and the inlet of the second pressure tank 908 to prevent the liquid from flowing back. The one-way valve 910 is also arranged at one end of the circulation pipeline 906 close to the inlet of the output pipeline 905 to prevent the liquid in the output pipeline 905 from entering the circulation pipeline 906 without passing through the second pressure tank 908.

[0069] Preferably, as shown in Figure 5 One end of the outlet of the output pipeline 905 is provided with a flow sensor 911. The flow sensor 911 is used to monitor the flow rate of the outlet of the output pipeline 905 to obtain the titration end point volume. The acid value X1 is obtained by the following acid value calculation formula.

[0070] X1=(V0-V1)cM1m

[0071] In the formula: X1: concentration (mgKOH / g) c: titrant concentration (mol / L) V0: titration blank volume (mL) V1: titration end point volume (mL) M1: potassium hydroxide molar mass (mL) m: sample mass (g)

[0072] In addition, as Figure 1 shown, in order to achieve better results, the box 1 is provided with a first liquid tank 14 and a second liquid tank 15, the first liquid tank 14 is connected with a first dropper, the second liquid tank 15 is connected with a second dropper, the first liquid tank 14 is used for containing petroleum ether isopropyl alcohol mixed solution and phenolphthalein indicator, the second liquid tank 15 is used for containing olive oil sample.

[0073] The above only the preferred embodiment of the present application has been described, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application, should be included in the protection scope of the present application.

Claims

1. An olive oil acid value detection device, characterized in that: comprising a box body (1) with an inner cavity, a fixed disc (2) arranged in the box body (1), a rotating disc (3) pivoted relative to the fixed disc (2), a first driving part (4) for driving the rotating disc (3) to rotate, a vibration mechanism (5) connected below the rotating disc (3), and a second driving part (6) for driving the rotating disc (3) to vibrate; At least two conical bottles (7) are arranged on the rotating disc (3) in a straight line, an alkaline burette (8) is arranged on the fixed disc (2), a flow adjusting assembly (9) is arranged at the liquid output end of the alkaline burette (8), and the flow adjusting assembly (9) is used for adjusting the volume of liquid entering the conical bottle (7); When the first driving part (4) drives the rotating disc (3) to rotate, the two conical bottles (7) are alternately arranged below the alkaline burette (8), and the second driving part (6) drives the vibration mechanism (5) to rotate with the rotating disc (3); A communication pipeline (10) is arranged between the two conical bottles (7), and a liquid suction pump (11) is arranged on the communication pipeline (10).

2. The olive oil acid value detection device according to claim 1, characterized in that: the vibration mechanism (5) comprises a sleeve (501) connected below the rotating disc (3), a socket (502) slidingly connected in the sleeve (501), a penetrating shaft (503) extending downward is arranged on the sleeve (501), and a containing groove (5021) containing the penetrating shaft (503) is arranged in the middle of the socket (502); A first elastic member (504) is sleeved outside the penetrating shaft (503), and the first elastic member (504) is arranged in the containing groove (5021); A driving shaft (505) is arranged at the power output end of the second driving part (6), an eccentric arm (506) is arranged on the driving shaft (505), a connecting arm (507) is pivotally connected in the socket (502), and the connecting arm (507) is pivotally connected with the eccentric arm (506); When the second driving part (6) drives the driving shaft (505) to rotate, the socket (502) reciprocally slides into the sleeve (501), the first elastic member (504) stores or releases energy between the penetrating shaft (503) and the socket (502), and the rotating disc (3) moves up and down relative to the box body (1).

3. The olive oil acid value detection device according to claim 2, characterized in that: the first driving part (4) is connected to the rotating disc (3) through a first mounting seat (508), a second mounting seat (509) is arranged below the first mounting seat (508), and the second mounting seat (509) is bolted with the second driving part (6); A second elastic member (510) is arranged on the second mounting seat (509), and the other end of the second elastic member (510) is connected to the rotating disc (3). ​ ​ ​ The second elastic member (510) is arranged on both sides of the first driving part (4) and stores or releases energy due to the rotation of the driving shaft (505).

4. The olive oil acid value detection device according to claim 3, wherein Two vibration mechanisms (5) are arranged at both ends of the rotating disc (3), and two eccentric arms (506) are arranged on the driving shaft (505).

5. The olive oil acid value detection device according to claim 4, wherein Fixed plates (511) are arranged at both ends of the driving shaft (505), the upper end of the fixed plate (511) abuts against the fixed disc (2), and the lower end of the fixed plate (511) abuts against the box body (1); The driving shaft (505) is inserted into the fixed plate (511), and a deep groove ball bearing (512) is arranged between the driving shaft (505) and the fixed plate (511).

6. The olive oil acid value detection device according to claim 5, wherein A plain bearing is arranged between the fixed plate (511) and the fixed disc (2) and / or between the fixed plate (511) and the box body (1).

7. The olive oil acid value detection device according to claim 1, wherein The flow regulating assembly (9) is connected to the alkaline burette (8) through a connecting frame (16), the flow regulating assembly (9) comprises a box body (901) with a cavity, a through hole (902) is arranged on the upper portion of the box body (901), and the through hole (902) is arranged directly below the liquid output end of the alkaline burette (8); A liquid storage box (903) for receiving liquid is arranged in the box body (901), a terminal dropping tube (904) is arranged at the lower end of the liquid storage box (903), an output pipeline (905) is arranged between the liquid storage box (903) and the terminal dropping tube (904), a circulation pipeline (906) is connected in parallel to the output pipeline (905), a first pressure tank (907) is arranged on the output pipeline (905), and a second pressure tank (908) is arranged on the circulation pipeline (906); The inlet pressure of the first pressure tank (907) is less than the outlet pressure of the second pressure tank (908), and the outlet pressure of the first pressure tank (907) is greater than the inlet pressure of the second pressure tank (908).

8. The olive oil acid value detection device according to claim 7, wherein A flow regulating valve (909) is arranged at one end of the circulation pipeline (906) close to the outlet of the output pipeline (905), and a one-way valve (910) is arranged at one end of the circulation pipeline (906) close to the inlet of the output pipeline (905).

9. The olive oil acid value detection device according to claim 8, wherein A flow sensor (911) is arranged at one end of the outlet of the output pipeline (905).

10. The olive oil acid value detection device according to claim 1, wherein The third driving part (12) is arranged above the box body (1), and a pressing plate (13) is connected to the power output end of the third driving part (12); the pressing plate (13) is arranged in the inner cavity, and the third driving part (12) drives the pressing plate (13) to move up and down along the height direction of the box body (1). The pressing plate (13) is provided with an accommodating hole (1301) for accommodating two conical bottles (7), and when the rotating disc (3) rotates, the pressing plate (13) abuts against the conical bottles (7).

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