Ultrasonic wave reinforced composite soxhlet extractor rapid organic extraction device

Abstract

The utility model discloses a kind of ultrasonic wave reinforced composite soxhlet extractor rapid organic matter extraction device, the distillation flask top of the device is equipped with extraction bottle, condenser is installed in extraction bottle top, extraction bottle and connecting pipe both sides are equipped with coupling pipe and siphon, extraction bottle middle section is rectangle and is equipped with fluorescence scanner in one side, extraction bottle inner chamber is equipped with support plate, support plate top surface is equipped with ultrasonic generator and sample extraction package in proper order, filter plate is equipped in extraction bottle inner wall above sample extraction package, filter plate includes center plate and edge plate, edge plate bottom surface is equipped with the first and second cleaning block of symmetrical arrangement, first and second cleaning block side is equipped with filter cloth, the tail end is connected with the side surface of center plate, center plate top surface is equipped with the waterproof drive motor of two output ends, waterproof drive motor is connected with the tail end of traction cable of second cleaning block by the roller shaft of output end and winding connection. The device reduces the possibility of impurities mixed in soxhlet extractor distillation finished product, improves organic matter extraction quality.

Description

Technical Field

[0001] This utility model relates to the field of organic matter extraction technology, and in particular to a rapid organic matter extraction device using an ultrasonic-enhanced composite Soxhlet extractor. Background Technology

[0002] Currently, there are various devices and equipment available for extracting persistent organic pollutants from soil, mainly including Soxhlet extractors, ultrasonic extractors, and rapid solvent extraction devices. Among them, the Soxhlet extraction method is a classic and widely used for extracting organic matter from soil samples. This device has a relatively simple structure and operation, and can fully extract organic matter from the soil through multiple reflux cycles. However, because the reflux rate needs to be controlled, multiple reflux cycles are required to achieve good extraction results, making the process time-consuming. Furthermore, the extraction process requires a large amount of solvent, increasing costs and environmental burden.

[0003] Chinese patent document CN219072129U discloses a Soxhlet extractor that reduces extract contamination. It addresses the problem of solid sediment or particulate matter accumulating at the bottom of the extraction tube during use, causing direct contact between the extract and the solid sediment or particulate matter, leading to re-contamination. Furthermore, Chinese patent document CN207785998U discloses a Soxhlet extractor with a gas overflow prevention function. This extractor includes an extraction bottle, a vapor tube, a siphon tube, and an extraction tube. A condenser is connected above the extraction tube, and a gas filter canister is connected to the open end of the condenser. By adding a gas filter canister to the traditional Soxhlet extraction equipment to adsorb toxic gases, the harmful effects of toxic gases on the environment and operators are reduced.

[0004] However, existing Soxhlet extractors fail to filter and intercept the liquid at the siphon inlet during operation, causing some solid particles in the extraction bag to flow back into the distillation flask along with the solvent, resulting in impurities mixed in the distillation product and seriously affecting the quality of organic matter extraction. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a rapid organic matter extraction device using an ultrasonic-enhanced composite Soxhlet extractor. This device overcomes the defects of traditional Soxhlet extractors in organic matter extraction, improves the efficiency of organic matter extraction operations, saves costs, avoids environmental impact, reduces the possibility of impurities mixed in the distilled product of the Soxhlet extractor, and improves the quality of organic matter extraction.

[0006] To solve the above-mentioned technical problems, this utility model provides a rapid organic extraction device using an ultrasonic-enhanced composite Soxhlet extractor, comprising a distillation flask, an extraction flask connected to the top of the distillation flask via a connecting pipe, a condenser installed on the top of the extraction flask, a connecting pipe and a siphon pipe respectively communicating with the inner cavity on both sides of the extraction flask and the connecting pipe, the extraction flask having a rectangular cross-section in the middle and a fluorescence scanner on one side, a support plate with built-in through holes in the inner cavity of the extraction flask, an ultrasonic generator on the top surface of the support plate, a sample extraction pack on the top surface of the ultrasonic generator, and a [missing information - likely a design feature] on the inner wall of the extraction flask above the sample extraction pack. The filter plate includes a central plate and an edge plate located on the outer periphery of the central plate. The bottom surface of the edge plate is provided with a first cleaning block and a second cleaning block arranged symmetrically via a return spring. The sides of the first and second cleaning blocks are provided with filter cloth whose tail ends are connected to the side of the central plate. The side of the second cleaning block is provided with a traction cable. The first and second cleaning blocks are slidably attached to the bottom surface of the edge plate. The top surface of the central plate is provided with a waterproof drive motor with two output ends, and the two output ends of the waterproof drive motor are connected to rollers. The two rollers are wound around the tail end of the traction cable.

[0007] Furthermore, the sample in the sample extraction pack binds to the fluorescent probe of the fluorescence scanner to form a fluorescent complex, and the sample extraction pack consists of two or three adjacent surrounding thin sheet squares.

[0008] Furthermore, the interface between the siphon tube and the extraction bottle is located above the filter plate, and the filter pore size of the filter plate is smaller than the size of the internal through hole of the support plate.

[0009] Furthermore, the inner wall of the extraction bottle is connected to a waterproof drive motor via a handle, the waterproof drive motor is fixedly connected to the top surface of the central plate via a short rod, a bracket is fixedly connected to the bottom surface of the handle near the tail end, and the traction cable passes through the top of the edge plate and wraps around the surface of the bracket.

[0010] Furthermore, a microwave heater is provided on the outer surface of the distillation flask, and the fluorescence scanner is signal-connected to the microwave heater.

[0011] Furthermore, the length of the first cleaning block matches the side length of the central plate, the length of the second cleaning block matches the side length of the edge plate, a guide rod is provided on the lower part of the surface of the edge plate near the central plate, and the width of the filter cloth matches the side length of the central plate, and the filter cloth is wrapped around the surface of the guide rod.

[0012] Furthermore, when the waterproof drive motor rewinds, the traction cable drives the edge plate to rise through the second cleaning block until the bottom surface of the edge plate is flush with the bottom surface of the center plate, and the first and second cleaning blocks are located at the outer edge of the edge plate.

[0013] Furthermore, the thickness of the central plate is greater than that of the edge plate, and the central plate protrudes from the surface of the edge plate and is fixedly fitted with a hoop. A protective filter is connected to the bottom of the hoop, and the bottom of the protective filter is fixedly connected to the top of the edge plate.

[0014] Furthermore, the inner ring of the protective filter is larger than the outer ring of the central plate, and the filtration size of the protective filter is not larger than the filtration size of the filter cloth.

[0015] Because this utility model of ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction adopts the above-mentioned technical solution, namely, the top of the distillation flask of this device is connected to the extraction flask through a connecting pipe, the top of the extraction flask is equipped with a condenser tube, the extraction flask and the connecting pipe are respectively provided with connecting pipes and siphon tubes communicating with the inner cavity, the middle section of the extraction flask is rectangular and a fluorescence scanner is provided on one side, the inner cavity of the extraction flask is provided with a support plate with built-in through holes, the top surface of the support plate is provided with an ultrasonic generator and a sample extraction pack in sequence, the inner wall of the extraction flask is provided with a filter plate above the sample extraction pack, the filter plate includes a central plate and an edge plate, the bottom surface of the edge plate is provided with a first cleaning block and a second cleaning block symmetrically arranged, the sides of the first cleaning block and the second cleaning block are provided with filter cloth whose tail ends are connected to the side of the central plate, the top surface of the central plate is provided with two waterproof drive motors with output ends, the waterproof drive motors are connected to the tail end of the traction cable connected to the second cleaning block through the roller shaft of the output end. This device overcomes the shortcomings of traditional Soxhlet extractors for organic extraction, improves the efficiency of organic extraction operations, saves costs, avoids environmental impact, reduces the possibility of impurities being mixed into the distilled product of the Soxhlet extractor, and improves the quality of organic extraction. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to this utility model.

[0018] Figure 2 A schematic diagram showing the setup of the support plate, ultrasonic generator, and sample extraction pack in this device;

[0019] Figure 3 This is a schematic diagram showing the filter plate setup in this device;

[0020] Figure 4 A schematic diagram showing the setup of the central and edge plates in this device;

[0021] Figure 5 This is a schematic diagram showing the filter cloth setup in this device;

[0022] Figure 6 for Figure 5 Enlarged diagram of section A in the middle;

[0023] Figure 7 This is a schematic diagram showing the descent of the edge plates relative to the center plate in this device;

[0024] Figure 8 This is a schematic diagram showing the arrangement of the hoop and protective filter in this device;

[0025] Figure 9 This is a schematic diagram showing the protective filter screen descending along with the edge plate in this device;

[0026] Figure 10 This is a schematic diagram showing the state of the protective filter in this device before and after use;

[0027] Figure 11 This is a schematic diagram of the process of the first cleaning block cleaning the bottom surface of the edge plate in this device. Detailed Implementation

[0028] Implementation, for example Figures 1 to 4 As shown, the ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction of this utility model includes a distillation flask 1. An extraction flask 2 is connected to the top of the distillation flask 1 via a connecting pipe. A condenser 6 is installed on the top of the extraction flask 2. Connecting pipes 3 and siphon pipes 5, respectively, are provided on both sides of the extraction flask 2 and the connecting pipe, communicating with the inner cavity. The extraction flask 2 has a rectangular cross-section in the middle and a fluorescence scanner 4 is provided on one side. A support plate 9 with built-in through holes is provided inside the extraction flask 2. An ultrasonic generator 8 is provided on the top surface of the support plate 9. A sample extraction pack 7 is provided on the top surface of the ultrasonic generator 8. A filter plate 10 is provided on the inner wall of the extraction flask 2 above the sample extraction pack 7. The filter plate 10 includes a central plate 10. A central plate 101 and an edge plate 102 are located on the outer periphery of the edge plate 101. The bottom surface of the edge plate 102 is provided with symmetrically arranged first cleaning blocks 11 and second cleaning blocks 12 via a return spring 18. The sides of the first and second cleaning blocks 11 and 12 are provided with filter cloths 17 whose tail ends are connected to the side of the central plate 101. The side of the second cleaning block 12 is provided with a traction cable 16. The first and second cleaning blocks 11 and 12 are slidably attached to the bottom surface of the edge plate 102. The top surface of the central plate 101 is provided with a waterproof drive motor 15 with two output ends, and each output end of the waterproof drive motor 15 is connected to a roller shaft. The two roller shafts are wound around the tail end of the traction cable 16. The filter cloth 17 is cross-shaped and can be fixed to the first cleaning blocks 11, the second cleaning blocks 12, and the edge plate 102 by adhesive bonding or other methods. The first and second cleaning blocks 11 and 12 are connected by the filter cloth 17 and the return spring 18, respectively, which serves to support and constrain the edge plate 102.

[0029] During distillation, the solvent in distillation flask 1 evaporates upon heating, and the vapor enters condenser 6 through connecting pipe 3. After condensation, the vaporized solvent liquefies and drips to the bottom of extraction flask 2, soaking and dissolving the sample in sample extraction pack 7. Cavitation effect is achieved through ultrasonic generator 8, which accelerates the release of organic matter and improves the extraction speed. After the liquid level in extraction flask 2 rises to the inlet height of siphon tube 5, siphon tube 5 returns the soaked and dissolved liquid to distillation flask 1. As the heating operation continues, the solvent continues to condense in the form of vapor. Through the above cycle operation, Soxhlet extraction and ultrasonic extraction methods can be combined, which has high efficiency and specificity. It can be optimized for specific types of organic matter, such as fats, oils, pesticide residues, and environmental pollutants, making this device have broad application prospects and potential in the field of organic matter extraction.

[0030] Furthermore, since the sample has undergone fluorescence treatment, after the sample is transferred from the sample extraction pack 7 to the distillation flask 1, the content of fluorescent components in the liquid flowing back in the siphon tube 5 will decrease to the set threshold (there may be a small amount of residue, but it is within the allowable experimental error range). At this time, heating of the distillation flask 1 is stopped, the extraction operation stops, and the extraction endpoint can be automatically determined, thereby achieving automation and improving efficiency.

[0031] Preferably, the sample in the sample extraction pack 7 is bound to the fluorescent probe of the fluorescence scanner 4 to form a fluorescent complex, and the sample extraction pack 7 is composed of two or three adjacent surrounding thin sheet squares.

[0032] During the extraction process, the sample in the sample extraction pack 7 is treated with fluorescence, or its deuterated indicator can be converted into a fluorescent derivative by chemical methods.

[0033] Preferably, the interface between the siphon tube 5 and the extraction bottle 2 is located above the filter plate 10, and the filter hole size of the filter plate 10 is smaller than the size of the through hole inside the support plate 9.

[0034] Preferably, the inner wall of the extraction bottle 2 is connected to the waterproof drive motor 15 via the handle 14, the waterproof drive motor 15 is fixedly connected to the top surface of the central plate 101 via the short rod 104, a bracket 13 is fixedly connected to the bottom surface of the handle 14 near the tail end, and the traction cable 16 passes through the top of the edge plate 102 and wraps around the surface of the bracket 13.

[0035] Preferably, the outer surface of the distillation flask 1 is provided with a microwave heater 105, and the fluorescence scanner 4 is signal-connected to the microwave heater 105. The microwave heater 105 is used to heat the distillation flask 1 to evaporate the solvent. The fluorescence scanner 4 and the microwave heater 105 are linked by a signal to realize the start and end of the extraction operation.

[0036] Preferred, such as Figure 5 and Figure 6 As shown, the length of the first cleaning block 11 matches the side length of the central plate 101, the length of the second cleaning block 12 matches the side length of the edge plate 102, a guide rod 103 is provided on the lower part of the side surface of the edge plate 102 near the central plate 101, and the width of the filter cloth 17 matches the side length of the central plate 101. The filter cloth 17 is wrapped around the surface of the guide rod 103.

[0037] Preferably, when the waterproof drive motor 15 is retracted, the traction cable 16 drives the edge plate 102 to rise through the second cleaning block 12 until the edge plate 102 is flush with the bottom surface of the center plate 101, and the first cleaning block 11 and the second cleaning block 12 are located at the outer edge of the edge plate 102.

[0038] During the extraction process, due to the release of a small number of solid particles from the sample extraction pack 7, which enter the siphon tube 5 during subsequent siphon reflux, causing extraction contamination, the filter cloth 17 made of non-elastic material in this device is in a taut state when the first cleaning block 11 and the second cleaning block 12 are in the edge state.

[0039] Before the filter plate 10 is clogged, the soaking solution in the sample extraction pack 7 located below the filter plate 10 can be intercepted and filtered. During siphoning, the released solid particles can be intercepted, preventing possible clogging of the siphon tube 5 and subsequent extraction contamination.

[0040] When filter plate 10 becomes clogged, waterproof drive motor 15 rotates, causing traction cable 16 on roller surface to release. Under the gravity of edge plate 102, edge plate 102 descends autonomously. Simultaneously, filter cloth 17 is pulled by guide rod 103, blocking the gap between edge plate 102 and center plate 101 surface caused by edge plate 102's descent, ensuring the filtration space remains intact. As edge plate 102 descends, first cleaning block 11 and second cleaning block 12 gradually approach each other under the pull of filter cloth 17 (e.g., ...). Figure 7 and Figure 11 As shown, in Figure 11 In this design, for ease of understanding, the gap between the edge plate 102 and the center plate 101 is enlarged. This can help clear blockages from the bottom of the edge plate 102. During the subsequent reset and retraction of the edge plate 102, the first cleaning block 11 and the second cleaning block 12 return to their original positions under the reset action of the reset spring 18, and exert a corresponding pulling effect on the filter cloth 17, waiting for the next round of cleaning operation.

[0041] In the initial state, the second cleaning block 12 is located at the edge of the edge plate 102 (e.g., ...). Figure 4As shown in the diagram, the waterproof drive motor 15 is in a tightened state, and the second cleaning block 12 supports the edge plate 102. Then, the waterproof drive motor 15 releases, the supporting effect of the second cleaning block 12 on the edge plate 102 becomes ineffective, and the edge plate 102 begins to descend on its own. During this descent, the filter cloths 17 at the four positions of the edge plate 102 pull on the connected first cleaning block 11 and second cleaning block 12, respectively. The working principle is as follows: Figure 11 As shown, when the second cleaning blocks 12 come together, the waterproof drive motor 15 starts to rewind. After the second cleaning blocks 12 move to the side of the edge plate 102, they continue to rewind, which can lift the edge plate 102. At this time, the filter cloth 17 is also in a tightened state.

[0042] Due to the size design of the first cleaning block 11 and the second cleaning block 12, the first cleaning block 11 and the second cleaning block 12 can effectively clean the bottom of the filter plate 10 when they are close together.

[0043] When the edge plate 102 is reset, the waterproof drive motor 15 rotates in the opposite direction to perform a winding operation, which can drive the edge plate 102 to move upward. During this process, the first cleaning block 11 and the second cleaning block 12 return to the edge of the edge plate 102 under the action of the reset spring 18 (because the two ends of the reset spring 18 are respectively connected to the bottom of the edge plate 102 and the surface of the first cleaning block 11 and the second cleaning block 12 away from the filter cloth 17).

[0044] Preferred, such as Figure 7 , Figure 8 and Figure 9 As shown, the thickness of the central plate 101 is greater than the thickness of the edge plate 102. The central plate 101 protrudes from the surface of the edge plate 102 and is fixedly fitted with a hoop 19. The bottom of the hoop 19 is connected to a protective filter 20, and the bottom of the protective filter 20 is fixedly connected to the top of the edge plate 102.

[0045] Preferably, the inner ring of the protective filter 20 is larger than the outer ring of the central plate 101, and the filtration size of the protective filter 20 is not larger than the filtration size of the filter cloth 17.

[0046] When the edge plate 102 descends, the end intersections of the four rectangular filter cloths 17 are unconstrained, which may result in gaps that lead to poor filtration.

[0047] As the edge plate 102 descends, the protective filter screen 20 descends simultaneously, effectively enclosing the inner filter cloth 17. This not only avoids affecting the raising and lowering of the filter cloth 17 but also prevents any gaps at the intersections of the filter cloth 17 in all four directions, ensuring the overall filtration effect of the filter plate 10. This, in turn, prevents clogging of the siphon tube 5 and subsequent extraction quality issues (such as...). Figure 9 and Figure 10 (As shown).

[0048] In summary, this application utilizes the ultrasonic generator 8 to create a cavitation effect, accelerating the release of organic matter. It also automatically determines the extraction endpoint and triggers heating cessation based on changes in fluorescence intensity. Furthermore, the sample extraction pack 7 is changed from a classic extraction filter paper cylinder to a closed grid, typically consisting of two or three surrounding thin-sheet squares, increasing the solvent contact area and thus improving extraction efficiency. Additionally, the dynamic adjustment of the filter plate 10 balances the prevention of clogging in the siphon tube 5 with extraction quality and continuous use of the filter plate 10. When the filter plate 10 becomes clogged, the vertical difference between the edge plate 102 and the central plate 101 drives the first cleaning block 11 and the second cleaning block 12 to clean the bottom of the edge plate 102. The protective filter screen 20 fills gaps during the raising and lowering of the filter plate 10, ensuring continuous filtration, reducing the possibility of impurities entering the distillate product from the Soxhlet extractor, and improving the quality of organic matter extraction.

Claims

1. A rapid organic extraction device using an ultrasonic-enhanced composite Soxhlet extractor, comprising a distillation flask, an extraction flask connected to the top of the distillation flask via a connecting pipe, a condenser tube installed on the top of the extraction flask, and connecting pipes and siphon tubes communicating with the inner cavity on both sides of the extraction flask and the connecting pipe, characterized in that: The extraction bottle has a rectangular cross-section in the middle and a fluorescence scanner on one side. The inner cavity of the extraction bottle has a support plate with built-in through holes. The top surface of the support plate has an ultrasonic generator. The top surface of the ultrasonic generator has a sample extraction pack. The inner wall of the extraction bottle has a filter plate above the sample extraction pack. The filter plate includes a central plate and an edge plate located outside the periphery of the central plate. The bottom surface of the edge plate has a first cleaning block and a second cleaning block symmetrically arranged through a return spring. The sides of the first cleaning block and the second cleaning block have filter cloths whose tail ends are connected to the side of the central plate. The side of the second cleaning block has a traction cable. The first cleaning block and the second cleaning block are both slidably attached to the bottom surface of the edge plate. The top surface of the central plate has a waterproof drive motor with two output ends. The two output ends of the waterproof drive motor are connected to rollers. The two rollers are wound around the tail end of the traction cable.

2. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1, characterized in that: The sample in the sample extraction pack is bound to the fluorescent probe of the fluorescence scanner to form a fluorescent complex, and the sample extraction pack consists of two or three adjacent surrounding thin sheet squares.

3. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1 or 2, characterized in that: The interface between the siphon tube and the extraction bottle is located above the filter plate, and the filter pore size of the filter plate is smaller than the size of the through hole inside the support plate.

4. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 3, characterized in that: The inner wall of the extraction bottle is connected to a waterproof drive motor via a handle. The waterproof drive motor is fixedly connected to the top surface of the central plate via a short rod. A bracket is fixedly connected to the bottom surface of the handle near its tail end, and the traction cable passes through the top of the edge plate and wraps around the surface of the bracket.

5. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1, characterized in that: The outer surface of the distillation flask is equipped with a microwave heater, and the fluorescence scanner is signal-connected to the microwave heater.

6. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1, characterized in that: The length of the first cleaning block matches the side length of the center plate, the length of the second cleaning block matches the side length of the edge plate, a guide rod is provided on the lower part of the surface of the edge plate near the center plate, and the width of the filter cloth matches the side length of the center plate, and the filter cloth is wrapped around the surface of the guide rod.

7. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1, characterized in that: When the waterproof drive motor rewinds, the traction cable drives the edge plate to rise through the second cleaning block until the bottom surface of the edge plate is flush with the bottom surface of the center plate, and the first cleaning block and the second cleaning block are located at the outer edge of the edge plate.

8. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 1, characterized in that: The thickness of the central plate is greater than that of the edge plate. The central plate protrudes from the surface of the edge plate and is fixedly fitted with a hoop. A protective filter is connected to the bottom of the hoop, and the bottom of the protective filter is fixedly connected to the top of the edge plate.

9. The ultrasonic-enhanced composite Soxhlet extractor for rapid organic extraction according to claim 8, characterized in that: The inner ring of the protective filter is larger than the outer ring of the central plate, and the filtration size of the protective filter is not larger than the filtration size of the filter cloth.

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