A droplet generation oil purification device

Abstract

A droplet generation oil purification device includes a centrifuge tube and a liquid suction assembly. The liquid suction assembly includes a liquid suction needle tube and a liquid suction tube. The liquid suction tube and the liquid suction needle tube are connected and communicate with each other. A sliding plug is slidably arranged in the liquid suction tube. The upper end of the sliding plug is connected with a liquid suction handle rod, and the liquid suction handle rod can drive the sliding plug to slide in the liquid suction tube. The end of the liquid suction needle tube is flat-headed. A liquid suction platform is arranged at the bottom of the centrifuge tube. The liquid suction platform is correspondingly arranged with the end of the liquid suction needle tube. The end of the liquid suction needle tube can extend into the liquid suction platform at the bottom of the centrifuge tube for cooperation. When purifying the droplet generation oil, the end of the liquid suction needle tube is extended to the position of the liquid suction platform at the bottom of the centrifuge tube, and the liquid suction handle rod is pulled to drive the sliding plug to move upward, so as to suck the lower-layer droplet generation oil into the liquid suction tube and leave the upper-layer miscellaneous liquid in the centrifuge tube, thereby completing the purification of the droplet generation oil. The purification device of the present invention is simple and fast to operate, improves work efficiency, and at the same time ensures the quality and output of products.

Description

Technical Field

[0001] The present invention belongs to the field of droplet - forming oil production, and particularly relates to a purification device for droplet - forming oil. Background Art

[0002] Droplet - forming oil is used to separate a liquid into uniform droplets, and forms water - in - oil micro - droplets by using the shear force formed between the oil phase and the liquid phase. It is widely used in biological, chemical and other fields. During the production process of droplet - forming oil, a purification process is required for the produced droplet - forming oil to make it meet the requirements. The existing methods for purifying and refining droplet - forming oil are as follows: The obtained droplet - forming oil from the reaction is sub - packed into a centrifuge bottle, one - tenth of ethanol is added to the centrifuge bottle and shaken evenly for balancing, and then centrifuged. After centrifugation, the miscellaneous liquid on the upper layer of the centrifuge tube is sucked and discarded with a dropper. Then, ethanol is added again and centrifuged to suck and discard the upper - layer miscellaneous liquid. This purification process is repeated many times to obtain the purified droplet - forming oil. In the existing purification equipment and process for droplet - forming oil, there is an obvious demarcation line between the lower - layer pure liquid and the upper - layer miscellaneous liquid, which seems clear. However, when using a dropper to suck the upper - layer miscellaneous liquid, especially when approaching the interface, it is very difficult to handle and operate. Either the upper - layer miscellaneous liquid is not sucked cleanly and a little remains, or too much is sucked and part of the pure liquid is taken away, thus affecting the yield of the pure liquid. Summary of the Invention

[0003] The purpose of the present invention is to provide a purification device for droplet - forming oil to solve the technical problem of how to facilitate the operation and ensure the quality and yield of the product during the purification of droplet - forming oil.

[0004] To solve the above - mentioned technical problem, the specific technical solution of a purification device for droplet - forming oil of the present invention is as follows:

[0005] A purification device for droplet - forming oil includes a centrifuge tube and a liquid - sucking assembly. The liquid - sucking assembly includes a liquid - sucking needle tube and a liquid - sucking tube. The liquid - sucking tube and the liquid - sucking needle tube are connected and communicate with each other. A sliding plug is slidably arranged in the liquid - sucking tube. The upper end of the sliding plug is connected with a liquid - sucking handle rod, and the liquid - sucking handle rod can drive the sliding plug to slide in the liquid - sucking tube. The end of the liquid - sucking needle tube is flat - headed. A liquid - sucking platform is arranged at the bottom of the centrifuge tube, and the liquid - sucking platform corresponds to the end of the liquid - sucking needle tube. The end of the liquid - sucking needle tube can extend into the liquid - sucking platform at the bottom of the centrifuge tube for cooperation. When purifying the droplet - forming oil, the end of the liquid - sucking needle tube is extended to the position of the liquid - sucking platform at the bottom of the centrifuge tube, and the liquid - sucking handle rod is pulled to drive the sliding plug to move upward, so as to suck the lower - layer droplet - forming oil into the liquid - sucking tube, and leave the upper - layer miscellaneous liquid in the centrifuge tube, thus completing the purification of the droplet - forming oil.

[0006] Further, a side wall extends upward from the side of the liquid absorption platform, and the end of the side wall is connected to the inclined surface at the bottom of the centrifuge tube. The liquid absorption platform and the side wall form a liquid absorption groove. The end of the liquid absorption needle tube can extend into the liquid absorption groove to contact the liquid absorption platform, and at the same time, there is a gap between the liquid absorption needle tube and the side wall of the liquid absorption groove.

[0007] Further, a liquid absorption channel is provided at the end of the liquid absorption needle tube, and the liquid absorption channel can communicate the inside and outside of the liquid absorption needle tube.

[0008] Further, the liquid absorption channel is circular. A sealing plate is provided on the bottom surface of the liquid absorption needle tube to block the bottom surface of the liquid absorption needle tube. An arc edge is provided at one end of the liquid absorption channel located outside the liquid absorption needle tube. A floating plate is sleeved on the liquid absorption needle tube. The floating plate is circular ring-shaped and can slide up and down along the liquid absorption needle tube. The overall density of the floating plate is less than the density of the liquid droplet generation oil and greater than the density of the miscellaneous liquid. A cavity is provided inside the floating plate, and a sealing ball is provided in the cavity. The cavity is inclined inside the floating plate, and one end of the cavity is connected to the through hole in the middle of the floating plate. A guiding groove is provided outside the liquid absorption needle tube above the liquid absorption channel. The guiding groove is arc-shaped. When the floating plate moves on the liquid absorption needle tube, the sealing ball cooperates with the guiding groove, and the sealing ball moves accordingly along the guiding groove. The sealing ball fits with the arc edge outside the liquid absorption pipeline, and the sealing ball can block and seal the liquid absorption channel.

[0009] A liquid droplet generation oil purification device of the present invention has the following advantages:

[0010] 1. In this application, by providing a liquid absorption platform at the bottom of the centrifuge tube and correspondingly setting the end of the liquid absorption channel needle tube to be flat-headed, it is more convenient to operate compared with the prior art. At the same time, it can make the liquid droplet generation oil be sucked out as much as possible, reduce the residue, ensure the stable output of the liquid droplet generation oil, and make it easier to control the separation of the liquid droplet generation oil and the miscellaneous liquid, improving the product quality of the liquid droplet generation oil.

[0011] 2. The setting of the liquid absorption groove can further reduce the residue of the liquid droplet generation oil in the centrifuge tube during the purification process. At the same time, it can accurately observe and control the position of the interface between the liquid droplet generation liquid and the miscellaneous liquid, further improving the product quality and output.

[0012] 3. The setting of the liquid absorption channel and the floating plate enables the sealing ball and the liquid absorption channel to automatically cooperate and block and seal the liquid absorption channel during the purification process, which can prevent the inhalation of miscellaneous liquid, greatly reducing the risk of operator error. At the same time, it greatly improves the purification rate, and also reduces the risk of contamination of the liquid droplet generation oil by the miscellaneous liquid in the centrifuge tube when the liquid absorption component is taken out. This purification device improves the product quality, ensures the product output, is convenient and efficient to operate, improves the work efficiency, and reduces the cost. Description of the Drawings

[0013] Figure 1 Schematic structural diagram of Embodiment 1 of the purification device for the droplet-forming oil of the present invention;

[0014] Figure 2 Cross-sectional schematic diagram of Embodiment 1 of the purification device for the droplet-forming oil of the present invention;

[0015] Figure 3 is Figure 2 Enlarged view of part A in

[0016] Figure 4 Schematic structural diagram of the liquid suction needle tube and the bottom of the centrifuge tube in Embodiment 2 of the present invention;

[0017] Figure 5 Schematic structural diagram of the end of the liquid suction needle tube in Embodiment 3 of the present invention;

[0018] Figure 6 Cross-sectional schematic diagram of the purification device for the droplet-forming oil in Embodiment 4 of the present invention;

[0019] Figure 7 Cross-sectional view of the suspension plate and its connection schematic diagram with the liquid suction needle tube in Embodiment 4 of the present invention;

[0020] Description of the reference numerals in the figure: 1, centrifuge tube; 11, liquid suction platform; 12, liquid suction groove; 2, liquid suction needle tube; 21, liquid suction channel; 22, guiding groove; 23, plugging plate; 3, liquid suction tube; 31, sliding plug; 32, liquid suction handle rod; 4, droplet-forming oil; 5, miscellaneous liquid; 6, suspension plate; 61, cavity; 62, sealing ball. Detailed Description of the Invention

[0021] In order to better understand the purpose, structure and function of the present invention, the purification device for a droplet-forming oil of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Embodiment 1

[0023] As Figure 1-2 shown, the purification device for the droplet-forming oil of the present invention includes a centrifuge tube 1 and a liquid suction assembly. The droplet-forming oil 4 obtained from the reaction is added to the centrifuge tube 1 and a solvent is added. After centrifugation, the impurities in the droplet-forming oil 4 are adsorbed into the solvent. The solvent is immiscible with the droplet-forming oil 4 and forms an obvious layer separation. The solvent used in this embodiment is ethanol. Thus, after centrifugation, the purified droplet-forming oil 4 forms the lower layer and the miscellaneous liquid 5 forms the upper layer. The liquid suction assembly is used to suck out the purified droplet-forming oil 4 from the lower layer without bringing out the upper miscellaneous liquid 5, so as to achieve the purpose of purifying the droplet-forming oil 4.

[0024] The liquid suction assembly includes a liquid suction needle tube 2 and a liquid suction tube 3. The liquid suction tube 3 is connected and communicated with the liquid suction needle tube 2. A sliding plug 31 is arranged in the liquid suction tube 3. The sliding plug 31 is slidably connected in the liquid suction tube 3. The upper end of the sliding plug 31 is connected with a liquid suction handle rod 32. By pulling or pushing the liquid suction handle rod 32, the sliding plug 31 can be driven to slide in the liquid suction tube 3. The effective volume of the liquid suction tube 3 is larger than that of the centrifuge tube 1. That is to say, the liquid suction assembly can suck all the droplet generation oil 4 in the lower layer of the centrifuge tube 1 into the liquid suction tube 3 at one time, reducing the number of liquid suction times, simplifying the operation and improving the efficiency. In addition, the length of the liquid suction needle tube 2 is greater than that of the centrifuge tube 1, that is, the end of the liquid suction needle tube can extend to the bottom of the centrifuge tube 1. In addition, a scale is arranged on the outer side of the liquid suction tube 3, which is convenient for observing and counting the amount of the extracted droplet generation oil 4.

[0025] When using the liquid suction assembly to suck out the droplet generation oil 4 in the lower layer of the centrifuge tube 1, first push the sliding plug 31 to the bottom of the liquid suction tube 3, then insert the end of the liquid suction needle tube 2 into the bottom of the centrifuge tube 1, and pull the liquid suction handle rod 32 to drive the sliding plug 31 to move upward, so as to suck the droplet generation oil 4 into the liquid suction tube 3. When the interface between the droplet generation oil 4 and the miscellaneous liquid 5 is close to the bottom of the centrifuge tube 1 and the end of the liquid suction needle tube 2, stop sucking the droplet generation oil 4, and take out the liquid suction assembly, thus completing the purification of the droplet generation oil 4.

[0026] As Figure 2-3 shown, in order to further improve the quality and purity of the droplet generation oil 4 and reduce the residue of the droplet generation oil 4 in the centrifuge tube 1, a liquid suction platform 11 is arranged at the bottom of the centrifuge tube 1. The bottom of the centrifuge tube 1 is conical, and the end of the liquid suction needle tube 2 is flat-headed. The end of the liquid suction needle tube 2 matches the liquid suction platform 11. In this way, the residue of the droplet generation oil 4 in the centrifuge tube 1 can be greatly reduced during the purification process, ensuring the output of the droplet generation oil 4. At the same time, sucking the droplet generation oil 4 from the bottom of the centrifuge tube 1 is more convenient than the prior art operation. At the same time, the purification process is easier to control, reducing the loss caused by operation errors and ensuring the quality of the purified droplet generation oil 4.

[0027] Embodiment 2

[0028] This embodiment is a further improvement of Embodiment 1. The difference lies in the different bottom structure of the centrifuge tube 1. The other parts are the same as those in Embodiment 1 above and will not be elaborated here. Only the improved centrifuge tube 1 will be described.

[0029] As Figure 4As described above, a side wall extends upward from the side of the liquid suction platform 11, and the end of the side wall is connected to the inclined surface at the bottom of the centrifuge tube 1. In this way, the liquid suction platform 11 and the side wall form a liquid suction groove 12. The cross-sectional area of the liquid suction groove 12 is much smaller than the cross-sectional areas of the centrifuge tube 1 and the inclined surface at the bottom of the centrifuge tube 1. Similarly, the end of the liquid suction needle tube 2 can extend into the liquid suction groove 12 to contact the liquid suction platform 11, and there is a gap between the liquid suction needle tube 2 and the side wall of the liquid suction groove 12. In this way, during the purification process of the droplet-forming oil 4, the position of the interface between the droplet-forming liquid and the miscellaneous liquid 5 can be observed and controlled more accurately, and the residue of the droplet-forming oil 4 can be further reduced.

[0030] Embodiment 3

[0031] This embodiment is a further improvement on the above-mentioned Embodiment 1 and Embodiment 2. The difference lies in the different liquid suction needle tubes 2. For the same content as above, it will not be repeated. In the above-mentioned embodiments, during the purification process, the end of the liquid suction needle tube 2 and the liquid suction platform 11 are in contact and cooperate with each other. During the liquid suction process, when the end of the liquid suction needle tube 2 is completely attached to the liquid suction platform 11, there may be a possibility that the droplet-forming oil 4 cannot be sucked up. In this case, the liquid suction needle tube 2 needs to be slightly tilted so that there is a gap between the end of the liquid suction needle tube 2 and the liquid suction platform 11, allowing the droplet-forming oil 4 to enter the liquid suction tube 3 through the liquid suction needle tube 2. To avoid the above situation, the liquid suction channel 21 of the needle tube is improved.

[0032] As Figure 5 shown, a liquid suction channel 21 is provided at the end of the liquid suction needle tube 2. After the end of the liquid suction needle tube 2 contacts and fits with the liquid suction platform 11, the liquid suction channel 21 can connect the inside and outside of the liquid suction needle tube 2, allowing the droplet-forming oil 4 to enter the inside of the liquid suction needle tube 2 through the liquid suction channel 21 and then be sucked into the liquid suction tube 3, avoiding the situation where the end of the liquid suction needle tube 2 is completely attached to the liquid suction platform 11 and the droplet-forming oil 4 cannot be sucked out.

[0033] The liquid suction channel 21 in this embodiment can be set to one or more according to the actual situation. The size of the liquid suction channel 21 can also be set according to actual needs. In addition, the shape of the liquid suction channel 21 can also be set to arc-shaped, circular, rectangular, triangular, trapezoidal and other shapes.

[0034] Embodiment 4

[0035] When sucking liquid with the liquid sucking component in the above embodiments, in order to ensure the output of the droplet-forming oil 4 and reduce the residue in the centrifuge tube 1, it is necessary to suck as much of the droplet-forming oil 4 in the centrifuge tube 1 as possible into the liquid suction tube 3. Then, during the purification process, the interface between the droplet-forming oil 4 and the miscellaneous liquid 5 needs to be very close to the end of the liquid suction needle tube 2 and the bottom of the centrifuge tube 1, and at the same time, the miscellaneous liquid 5 cannot be sucked in or carried out. Therefore, the operator needs to be careful and meticulous at this stage. Although the above embodiments are more convenient and efficient for observing the interface between the droplet-forming oil 4 and the miscellaneous liquid 5 and controlling the position compared with the prior art, there is still a possibility of accidentally sucking out the miscellaneous liquid 5 during operation. Therefore, to solve this problem and prevent the miscellaneous liquid 5 from being sucked out during purification, the liquid suction needle tube 2 has been further optimized and improved.

[0036] As Figure 6-7 shown, in this embodiment, a suspension plate 6 is sleeved on the liquid suction needle tube 2. The suspension plate 6 is circular ring-shaped. The diameter of the middle through hole of the suspension plate 6 matches the outer diameter of the liquid suction needle tube 2. The suspension plate 6 can slide up and down along the liquid suction needle tube 2. A cavity 61 is arranged inside the suspension plate 6, and a sealing ball 62 is arranged in the cavity 61. The cavity 61 is inclined inside the suspension plate 6. One end of the cavity 61 is communicated with the through hole in the middle of the suspension plate 6. The internal size of the cavity 61 matches the sealing ball 62. The sealing ball 62 can slide and roll in the cavity 61. The end of the cavity 61 communicated with the through hole in the middle of the suspension plate 6 is lower than the other end located inside the suspension plate 6. Therefore, under the action of gravity, the sealing ball 62 is always located at the lower end of the cavity 61 and keeps in contact with the liquid suction needle tube 2.

[0037] In this embodiment, the liquid suction channel 21 at the end of the liquid suction needle tube 2 is circular, and the bottom surface of the liquid suction needle tube 2 is blocked by a blocking plate 23, and a circular liquid suction channel 21 is left on the side. An arc edge is arranged at the end of the liquid suction channel 21 located outside the liquid suction needle tube 2. The size of the arc edge matches the sealing ball 62. When the suspension plate 6 moves to the end of the liquid suction needle tube 2, the sealing ball 62 just fits with the liquid suction channel 21 and plays a role in blocking and sealing the liquid suction channel 21. In order to enable the sealing ball 62 to cooperate with the liquid suction channel 21 when it moves to the bottom of the liquid suction needle tube 2, a guiding groove 22 is arranged on the outside of the liquid suction needle tube 2 above the liquid suction channel 21. The guiding groove 22 is arc-shaped. When the suspension plate 6 moves on the liquid suction needle tube 2, the sealing ball 62 cooperates with the guiding groove 22, and the sealing ball 62 moves correspondingly along the guiding groove 22 to prevent the suspension plate 6 from rotating axially along the liquid suction needle tube 2. In this way, it can be ensured that when the suspension plate 6 moves to the end of the liquid suction channel 21 of the needle tube, the sealing ball 62 is just located at the position of the liquid suction channel 21.

[0038] It should be noted that the overall density of the floating plate 6 in this embodiment is less than the density of the droplet-forming oil 4 and greater than the density of the miscellaneous liquid 5, so that the floating plate 6 can be suspended at the position of the interface between the droplet-forming oil 4 and the miscellaneous liquid 5. That is, a part of the floating plate 6 is located in the miscellaneous liquid 5 and a part below is located in the droplet-forming oil 4. The floating plate 6 can move along the direction of the liquid suction needle tube 2 following the movement of the interface. During the process of the floating plate 6 moving along the liquid suction needle tube 2, at the same time, the density of the sealing ball 62 is greater than the density of the droplet-forming oil 4 and the miscellaneous liquid 5. Under the action of gravity, the edge of the sealing ball 62 contacts the outer side surface of the liquid suction needle tube 2, and the sealing ball 62 also slides or rolls along the liquid suction needle tube 2 during the movement. The floating plate 6 can also move into the liquid suction groove 12.

[0039] When sucking the droplet-forming oil 4, first move the floating plate 6 above the liquid suction needle tube 2, then insert the end of the liquid suction needle tube 2 to the position of the liquid suction platform 11 at the bottom of the centrifuge tube 1, and then put the floating plate 6 into the centrifuge tube 1. Under the action of gravity, the floating plate 6 moves to the interface between the droplet-forming oil 4 and the miscellaneous liquid 5. Then start pulling the liquid suction handle rod 32, and the droplet-forming oil 4 enters the liquid suction needle tube 2 and the liquid suction tube 3 through the liquid suction channel 21. As the interface gradually descends, the floating plate 6 synchronously moves downward along the liquid suction needle tube 2 following the interface. When the interface descends to a position close to the end of the liquid suction needle tube 2, the floating plate 6 moves to the end position of the liquid suction needle tube 2, and the sealing ball 62 cooperates with the liquid suction channel 21. Under the action of the gravity of the sealing ball 62 and the suction force at the liquid suction channel 21, the sealing ball 62 is firmly attached and adsorbed at the liquid suction channel 21. Take out the liquid suction assembly from the centrifuge tube 1, thus completing the operation of purifying the droplet-forming oil 4.

[0040] The setting of the floating plate 6 can make the sealing ball 62 automatically cooperate with the liquid suction channel 21 when the interface moves close to the end of the liquid suction needle tube 2, seal the liquid suction channel 21, prevent the miscellaneous liquid 5 from being sucked in due to human operation errors, and can greatly improve the efficiency of the purification operation. In addition, under the sealing cooperation of the sealing ball 62 and the liquid suction channel 21, when taking out the liquid suction assembly, it can also prevent the miscellaneous liquid 5 from entering the liquid suction needle tube 2 through the liquid suction channel 21, reduce the risk of the droplet-forming oil 4 being contaminated, improve the quality and output of the product, facilitate the operation at the same time, improve the process efficiency, and reduce the purification cost.

[0041] It will be understood that the present invention is described by way of some embodiments, and those skilled in the art will know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Additionally, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A droplet generation oil purification device, characterized in that, It includes a centrifuge tube (1) and a liquid suction assembly. The liquid suction assembly includes a liquid suction needle tube (2) and a liquid suction tube (3). The liquid suction tube (3) is connected and communicated with the liquid suction needle tube (2). A sliding plug (31) is slidably arranged in the liquid suction tube (3). The upper end of the sliding plug (31) is connected with a liquid suction handle rod (32). The liquid suction handle rod (32) can drive the sliding plug (31) to slide in the liquid suction tube (3). The end of the liquid suction needle tube (2) is flat-headed. A liquid suction platform (11) is arranged at the bottom of the centrifuge tube (1). The liquid suction platform (11) is correspondingly arranged with the end of the liquid suction needle tube (2). The end of the liquid suction needle tube (2) can extend into the liquid suction platform (11) at the bottom of the centrifuge tube (1) for cooperation. When purifying the droplet generation oil (4), the end of the liquid suction needle tube (2) is extended to the position of the liquid suction platform (11) at the bottom of the centrifuge tube (1). The liquid suction handle rod (32) is pulled to drive the sliding plug (31) to move upward, so as to suck the lower-layer droplet generation oil (4) into the liquid suction tube (3) and leave the upper-layer miscellaneous liquid (5) in the centrifuge tube (1), thus completing the purification of the droplet generation oil (4). A liquid suction channel (21) is arranged at the end of the liquid suction needle tube (2). The liquid suction channel (21) communicates the inside and outside of the liquid suction needle tube (2). The liquid suction channel (21) is circular. A sealing plate (23) is arranged on the bottom surface of the liquid suction needle tube (2) to seal the bottom surface of the liquid suction needle tube (2). An arc edge is arranged at one end of the liquid suction channel (21) located outside the liquid suction needle tube (2). A suspension plate (6) is sleeved on the liquid suction needle tube (2). The suspension plate (6) is circular-ring-shaped. The suspension plate (6) can slide up and down along the liquid suction needle tube (2). The overall density of the suspension plate (6) is less than the density of the droplet generation oil (4) and greater than the density of the miscellaneous liquid (5). A cavity (61) is arranged inside the suspension plate (6). A sealing ball (62) is arranged in the cavity (61). The cavity (61) is obliquely arranged inside the suspension plate (6). One end of the cavity (61) is communicated with the through hole in the middle of the suspension plate (6). The internal size of the cavity (61) matches the sealing ball (62). The sealing ball (62) can slide and roll in the cavity (61). One end of the cavity (61) communicated with the through hole in the middle of the suspension plate (6) is lower than the other end located inside the suspension plate (6). Therefore, the sealing ball (62) is always located at the lower end of the cavity (61) under the action of gravity and keeps the sealing ball (62) in contact with the liquid suction needle tube (2). A guiding groove (22) is arranged outside the liquid suction needle tube (2) above the liquid suction channel (21). The guiding groove (22) is arc-shaped. When the suspension plate (6) moves on the liquid suction needle tube (2), the sealing ball (62) cooperates with the guiding groove (22). The sealing ball (62) moves correspondingly along the guiding groove (22). The sealing ball (62) coincides with the arc edge on the outside of the liquid suction tube (3). The sealing ball (62) can play a role in sealing the liquid suction channel (21). The density of the sealing ball (62) is greater than the density of the droplet generation oil (4) and the density of the miscellaneous liquid (5).

2. The droplet generation oil purification device according to claim 1, characterized in that, On the side of the liquid absorption platform (11), there is a side wall extending upward, and the end of the side wall is connected to the inclined surface at the bottom of the centrifuge tube (1). The liquid absorption platform (11) and the side wall form a liquid absorption groove (12). The end of the liquid absorption needle tube (2) can extend into the liquid absorption groove (12) to contact the liquid absorption platform (11), and at the same time, there is a gap between the liquid absorption needle tube (2) and the side wall of the liquid absorption groove (12).

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