A high-efficiency fractionation device for acetone in a multi-component solvent

Abstract

The present application relates to fine chemical solvent separation, waste liquid resource recycling technical field, especially to a kind of high-efficiency fractionating column of multi-component solvent in acetone, including rectifying tower, rectifying tower side is equipped with settling tank, settling tank inner wall is equipped with floating object flow guide hopper, settling tank side outer wall is fixedly connected with processing box, processing box inner wall is provided with fixed seat, fixed seat outer wall is rotatably connected with filter cartridge, fixed seat side is fixedly connected with transmission conveying assembly, filter cartridge side below is provided with reflux assembly, by setting floating object flow guide hopper in settling tank, liquid level difference is used to make liquid surface floating object automatically converge and flow into hopper, and cooperate transmission conveying assembly to drive filter cartridge rotation, realize the automatic separation of floating object and entrained solvent, can be in real time, continuous cleaning light impurities during settling operation, effectively avoid floating object with liquid into subsequent filtration, rectifying unit, prevent pipeline, filter material and rectifying tower from being blocked, guarantee fractionating efficiency.

Description

Technical Field

[0001] This invention relates to the field of fine chemical solvent separation and waste liquid resource recovery technology, and in particular to a high-efficiency fractionation device for acetone in multi-component solvents. Background Technology

[0002] In the fine chemical industry, production processes such as material cleaning, liquid-liquid extraction, and organic synthesis continuously generate large quantities of multi-component mixed waste solvents containing acetone. These waste solvents are complex in composition, primarily containing acetone, methanol, n-pentanol, isoamyl alcohol, and pentanediol, along with trace amounts of moisture, colloids, solid particles, and various organic impurities. Currently, most industries employ traditional single-stage distillation processes to separate and recover these mixed solvents.

[0003] Before using distillation to recover the solvent, a settling tank is used to allow the mixed solvent to settle naturally. However, there are floating impurities in the solvent, and the existing settling tanks are not suitable for real-time treatment of these impurities. The floating impurities will be flushed below the liquid surface as the solvent enters the settling tank, disturbing the liquid layer and significantly reducing the overall settling efficiency. At the same time, the floating impurities are likely to enter the subsequent filtration and distillation processes with the supernatant, which not only increases the load on downstream equipment but also easily causes blockages in pipelines, filter media, and internal components of the distillation column, affecting the fractionation efficiency.

[0004] In summary, the existing technology lacks a technology for the automatic handling of floating debris in settling tanks. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a highly efficient fractionation device for acetone in a multi-component solvent.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a high-efficiency fractionation device for acetone in a multi-component solvent, comprising a distillation column, a settling tank installed on one side of the distillation column, a floating matter guide bucket installed on the inner wall of the settling tank, a processing box fixedly connected to the outer wall of one side of the settling tank, a fixed seat provided on the inner wall of the processing box, a filter cylinder rotatably connected to the outer wall of the fixed seat, a transmission and conveying assembly fixedly connected to one side of the fixed seat, a reflux assembly provided below one side of the filter cylinder, and a filter residue collection assembly fixedly connected to the outer wall of one side of the processing box.

[0007] Preferably, a guide pipe is fixedly connected to the bottom of the floating object guide hopper. The guide pipe is set with an inclined structure. The other end of the guide pipe passes through the inner wall of the settling tank and the outer wall of the treatment box in sequence, extends into the interior, and is fixedly connected to the fixed seat.

[0008] Preferably, a reflux cylinder is fixedly connected through the bottom inner wall of the processing tank, the top of the reflux cylinder is open, a reflux pipe is fixedly connected through the bottom of the reflux cylinder, and the other end of the reflux pipe is fixedly connected through the top inner wall of the settling tank.

[0009] Preferably, a sealing ring is fixedly connected to the outer wall of the fixed base, and the outer wall of the sealing ring is rotatably connected to the inner wall of the filter cartridge.

[0010] Preferably, the filter cartridge is arranged with an inclined structure. A ring-shaped rack is fixedly connected to the inner wall of one end of the filter cartridge that is connected to the fixed base, and a ring-shaped rack is fixedly connected to the outer wall of the filter cartridge. A discharge end is rotatably connected to the other end of the filter cartridge, and the discharge end is fixedly connected to the inner wall of the processing box through it.

[0011] Preferably, the transmission and conveying assembly includes a motor, which is fixedly connected to the inner wall of the processing box. A worm gear is fixedly connected to the output end of the motor, and a transmission wheel is fixedly connected to the end of the worm gear. The transmission wheel is meshed with a ring rack for transmission.

[0012] Preferably, a worm wheel is engaged with one side of the worm gear, and a universal joint is fixedly connected to the worm wheel. The other end of the universal joint is rotatably connected to a fixed base. A helical rod is fixedly connected to one end of the universal joint inside the filter cartridge, and the outer wall of the helical rod is in sliding contact with the inner wall of the filter cartridge.

[0013] Preferably, the reflux assembly includes a fixed frame, one end of which is fixedly connected to the inner wall of the processing tank. A universal joint is rotatably connected to one end of the fixed frame. An adjusting wheel is fixedly connected to one end of the universal joint, which meshes with a ring rack. A bending rod is fixedly connected to the other end of the universal joint, and the other end of the bending rod is rotatably connected to the inner wall of the processing tank. A movable frame is slidably fitted on the outer wall of the bending point of the bending rod. A guide rod is fixedly connected to the bottom end of the movable frame. The bottom end of the guide rod passes through the fixed frame and is fixedly connected to a compression plug. The outer wall of the compression plug is slidably fitted with the inner wall of the reflux cylinder.

[0014] Preferably, the filter residue collection assembly includes a fixed cover, the top opening of the fixed cover is fixedly connected to the outer end of the discharge end, a sealing seat is slidably fitted on the inner wall of the opening end of the fixed cover, an electric push rod is fixedly connected between the inner end of the sealing seat and the inner wall of the fixed cover, a placement groove is opened near the outer top of the sealing seat, a receiving dish is movably inserted into the inner wall of the placement groove, a push-out frame is slidably fitted through the inner wall of the bottom end of the placement groove, a trapezoidal block is fixedly connected to the inner wall of the bottom end of the fixed cover, and the outer end of the push-out frame is slidably contacted with the trapezoidal block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting up a floating debris guide hopper in the settling tank, the floating debris on the liquid surface is automatically gathered and flows into the hopper by utilizing the liquid level difference. In conjunction with the transmission and conveying components, the filter cylinder is rotated to achieve automatic separation of floating debris and entrained solvent. Light impurities can be cleaned in real time and continuously during the settling process, ensuring the stability of the liquid surface and preventing floating impurities from being washed below the liquid surface, thereby ensuring settling efficiency. At the same time, it effectively prevents floating debris from entering the subsequent filtration and distillation units with the feed liquid, preventing blockage of pipelines, filter media and distillation column, and ensuring fractionation efficiency.

[0017] 2. By setting up a transmission and conveying component, the filter cartridge can be driven to rotate, and the screw rod can also be driven to rotate, pushing out the filter residue inside the filter cartridge to ensure the filtration effect of the filter cartridge. By setting a sealing seat in the fixed cover, the discharge end of the filter cartridge can be sealed when it is pulled out, which can be cleaned without affecting the use of the equipment. At the same time, under the action of the trapezoidal block and the top ejector, the receiving dish can be ejected, simplifying the operation of picking up and putting out the filter residue.

[0018] 3. By setting up a reflux component, the filter cartridge can drive the squeeze plug to move up and down reciprocally while rotating. This allows the solvent flowing into the reflux cartridge to be transported back to the settling tank for settling, achieving material circulation, further improving the impurity separation effect, reducing effective solvent loss, ensuring feed cleanliness, and improving the overall acetone recovery rate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an efficient fractionation device for acetone in a multi-component solvent according to the present invention.

[0020] Figure 2 This is a partial cross-sectional schematic diagram of a high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention.

[0021] Figure 3 This is a partial cross-sectional schematic diagram of the structure of the high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention, including the floating guide bucket.

[0022] Figure 4 This is a schematic diagram of the structure of the high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention, including the mounting base;

[0023] Figure 5 This is a partial cross-sectional schematic diagram of the filter cartridge structure of a high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention.

[0024] Figure 6 This is a schematic diagram of the transmission and conveying assembly structure of a high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention.

[0025] Figure 7 This is a schematic diagram of the reflux assembly structure of a high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention.

[0026] Figure 8 This is a partial cross-sectional view of the filter residue collection component of a high-efficiency fractionation device for acetone in a multi-component solvent according to the present invention.

[0027] The diagram shows: 1. Distillation column; 2. Settling tank; 3. Floating matter guide hopper; 4. Processing box; 5. Fixing base; 6. Filter cartridge; 7. Transmission and conveying assembly; 8. Reflux assembly; 9. Filter residue collection assembly; 301. Guide pipe; 401. Reflux cylinder; 402. Reflux pipe; 501. Sealing ring; 601. Ring rack one; 602. Ring rack two; 603. Discharge end; 701. Motor; 702. Worm gear; 7 03. Drive wheel; 704. Worm gear; 705. Universal joint one; 706. Helical rod; 801. Fixed frame; 802. Universal joint two; 803. Adjusting wheel; 804. Bending rod; 805. Movable frame; 806. Guide rod; 807. Extrusion plug; 901. Fixed cover; 902. Sealing seat; 903. Electric actuator; 904. Placement slot; 905. Receiving dish; 906. Ejector frame; 907. Trapezoidal block. Detailed Implementation

[0028] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0029] like Figures 1-8 The apparatus shown is a high-efficiency fractionation device for acetone in a multi-component solvent, including a distillation column 1, a settling tank 2 installed on one side of the distillation column 1, a floating matter guide hopper 3 installed on the inner wall of the settling tank 2, a processing box 4 fixedly connected to the outer wall of one side of the settling tank 2, a fixing seat 5 provided on the inner wall of the processing box 4, a filter cartridge 6 rotatably connected to the outer wall of the fixing seat 5, a transmission and conveying assembly 7 fixedly connected to one side of the fixing seat 5, a reflux assembly 8 provided below one side of the filter cartridge 6, and a filter residue collection assembly 9 fixedly connected to the outer wall of one side of the processing box 4.

[0030] like Figure 3 As shown, a guide pipe 301 is fixedly connected to the bottom of the floating object guide bucket 3. The guide pipe 301 is set with an inclined structure. The other end of the guide pipe 301 passes through the inner wall of the settling tank 2 and the outer wall of the treatment box 4 in sequence, extends into the interior, and is fixedly connected to the fixed seat 5.

[0031] By setting a floating matter guide hopper 3 inside the settling tank 2, the floating matter on the liquid surface is automatically gathered and flows into the hopper by utilizing the liquid level difference. In conjunction with the transmission and conveying assembly 7, the filter cylinder 6 is rotated, realizing the automatic separation of floating matter and entrained solvent. Light impurities can be cleaned in real time and continuously during the settling operation, effectively preventing floating matter from entering the subsequent filtration and distillation units with the feed liquid, preventing blockage of pipelines, filter media and distillation column 1, and ensuring fractionation efficiency.

[0032] like Figure 3 As shown, a reflux cylinder 401 is fixedly connected through the bottom inner wall of the treatment tank 4. The top of the reflux cylinder 401 is set with an open structure. A reflux pipe 402 is fixedly connected through the bottom of the reflux cylinder 401. The other end of the reflux pipe 402 is fixedly connected through the top inner wall of the settling tank 2.

[0033] A one-way valve is installed inside the reflux pipe 402, and the open reflux cylinder 401 is used to receive the solvent discharged from the filter cartridge 6, providing a closed working chamber for the reciprocating pumping of the squeeze plug 807. As a circulation conveying channel, the reflux pipe 402, together with the internal one-way valve, forms a one-way reflux, allowing only the solvent inside the reflux cylinder 401 to be conveyed unidirectionally to the settling tank 2, which can effectively prevent the original liquid from flowing back into the settling tank 2 and ensure the stable and orderly operation of the circulation reflux.

[0034] like Figure 4 As shown, a sealing ring 501 is fixedly connected to the outer wall of the fixed base 5, and the outer wall of the sealing ring 501 is rotatably connected to the inner wall of the filter cartridge 6.

[0035] The sealing ring 501 is made of rubber sealing material that is resistant to organic solvent corrosion. It is fitted into the gap between the fixed seat 5 and the filter cartridge 6 for axial sealing.

[0036] like Figure 5 As shown, the filter cylinder 6 is arranged with an inclined structure. A ring rack 601 is fixedly connected to the inner wall of one end of the filter cylinder 6 that is connected to the fixed base 5. A ring rack 602 is fixedly connected to the outer wall of the filter cylinder 6. A discharge end 603 is rotatably connected to the other end of the filter cylinder 6. The discharge end 603 is fixedly connected to the inner wall of the processing box 4 through the material.

[0037] like Figure 6 As shown, the transmission and conveying assembly 7 includes a motor 701, which is fixedly connected to the inner wall of the processing box 4. A worm gear 702 is fixedly connected to the output end of the motor 701, and a transmission wheel 703 is fixedly connected to the end of the worm gear 702. The transmission wheel 703 is meshed with a ring rack 601 for transmission.

[0038] A worm gear 704 is provided on one side of the worm 702 for meshing transmission. A universal joint 705 is fixedly connected to the worm gear 704. The other end of the universal joint 705 is rotatably connected to the fixed base 5. A helical rod 706 is fixedly connected to one end of the universal joint 705 inside the filter cartridge 6. The outer wall of the helical rod 706 is in sliding contact with the inner wall of the filter cartridge 6.

[0039] The blades of the screw rod 706 fit against the inner wall of the filter cartridge 6, which can continuously push the filter residue to the discharge end 603, realizing automatic and continuous slag discharge without the need for manual shutdown for cleaning.

[0040] like Figure 7As shown, the reflux assembly 8 includes a fixed frame 801. One end of the fixed frame 801 is fixedly connected to the inner wall of the processing tank 4. A universal joint 802 is rotatably connected to one end of the fixed frame 801. An adjusting wheel 803 is fixedly connected to one end of the universal joint 802. The adjusting wheel 803 is meshed with a ring rack 602 for transmission. A bending rod 804 is fixedly connected to the other end of the universal joint 802. The other end of the bending rod 804 is rotatably connected to the inner wall of the processing tank 4. A movable frame 805 is slidably fitted on the outer wall of the bending point of the bending rod 804. A guide rod 806 is fixedly connected to the bottom end of the movable frame 805. The bottom end of the guide rod 806 passes through the fixed frame 801 and is fixedly connected to a compression plug 807. The outer wall of the compression plug 807 is slidably fitted with the inner wall of the reflux cylinder 401.

[0041] The bending rod 804 performs eccentric circular motion, which, together with the movable frame 805, forms a crank-slider mechanism, converting the circular motion into vertical reciprocating linear motion. Through the guide rod 806, it drives the extrusion plug 807 to reciprocate up and down inside the return cylinder 401, completing the liquid pressing and delivery cycle, realizing automatic solvent return and sedimentation, and the structure does not require additional power drive.

[0042] like Figure 8 As shown, the filter residue collection assembly 9 includes a fixed cover 901. The top opening of the fixed cover 901 is fixedly connected to the outer end of the discharge end 603. A sealing seat 902 is slidably fitted on the inner wall of the opening end of the fixed cover 901. An electric push rod 903 is fixedly connected between the inner end of the sealing seat 902 and the inner wall of the fixed cover 901. A placement groove 904 is opened near the outer top of the sealing seat 902. A receiving dish 905 is movably inserted into the inner wall of the placement groove 904. A push-out frame 906 is slidably fitted through the inner wall of the bottom end of the placement groove 904. A trapezoidal block 907 is fixedly connected to the inner wall of the bottom end of the fixed cover 901. The outer end of the push-out frame 906 is slidably contacted with the trapezoidal block 907.

[0043] The ejector 906 slides with the inclined surface of the trapezoidal block 907. As the sealing seat 902 moves the receiving dish 905 completely out, the ejector 906 is pushed upward by the trapezoidal block 907, automatically lifting the receiving dish 905, which makes it convenient for staff to quickly pick up the material. The operation is simple and convenient.

[0044] Working principle: First, the multi-component mixed solvent to be treated is sent into the settling tank 2 for settling and stratification. High-density solid impurities settle to the bottom of the tank under gravity, while light floating impurities such as colloids, greases, and flocculents automatically gather at the surface of the solution. Then, the liquid level in the settling tank 2 is controlled so that it is always higher than the top opening of the floating matter guide hopper 3. At this time, using the liquid level difference, the surface floating impurities, along with a small amount of original liquid, automatically flow into the floating matter guide hopper 3 and are then gravity-fed through the inclined guide pipe 301 to the inclined filter cartridge 6 inside the treatment tank 4.

[0045] Then, motor 701 is started, driving worm gear 702 to rotate synchronously. Worm gear 702, through transmission wheel 703, meshes with ring rack 601, driving the filter cartridge 6 to rotate at high speed, achieving rotary filtration. Simultaneously, worm gear 702 meshes with worm wheel 704, which, through universal joint 705, drives the internal spiral rod 706 of filter cartridge 6 to rotate, automatically pushing the filter cake. At the same time, the outer ring rack 602 of filter cartridge 6 synchronously meshes with adjusting wheel 803. Meanwhile, the solvent after preliminary filtration in filter cartridge 6 collects inside return cylinder 401. The rotating adjusting wheel 803 then drives the bent rod 804 to rotate eccentrically, which, through movable frame 805 and guide rod 806, drives the squeeze plug 807 to perform up-and-down squeezing motion inside return cylinder 401. When the squeeze plug 807 moves upward, the opening of return cylinder 401 opens, allowing solvent to flow in; when it moves downward, it squeezes the solvent, transporting it unidirectionally back to settling tank 2 through return pipe 402 for secondary settling.

[0046] Under normal production conditions, the electric actuator 903 drives the sealing seat 902 to retract, allowing the filter residue to fall into the receiving dish 905. When it is necessary to clean the receiving dish 905, the electric actuator 903 pushes the sealing seat 902 to slide outward. One end of the sealing seat 902 will seal the discharge end 603. At the same time, during the sliding process, the bottom of the ejector 906 contacts the inclined surface of the trapezoidal block 907 and is lifted upward by the lifting action of the inclined surface, automatically lifting the receiving dish 905 inside the placement tank 904. The staff can directly remove the receiving dish 905 to clean the filter residue, greatly improving the convenience of operation and maintenance.

[0047] The solvent, after settling in settling tank 2, is then transported to the interior of distillation column 1 for distillation. The solvent is then introduced into the heat exchange unit, where it is preheated using the waste heat from the top steam of distillation column 1 to reduce distillation energy consumption.

[0048] The preheated feed solution first enters a coarse fractionation distillation column. Under controlled temperature and reflux ratio, the high-boiling-point isoamyl alcohol heavy component and the low-boiling-point light component are initially separated. The top of the column yields a mixed light component mainly composed of acetone, lower alcohols, and water. This light component is then fed into a refining distillation column for precise fractionation under negative pressure and low temperature conditions. A micro-circulation boiling aid medium is used to break up the azeotropic system, resulting in a stable high-purity acetone vapor at the top. After condensation, part of the acetone vapor is refluxed to a pressure-stabilizing column, while the remainder enters a deep dehydration unit. Trace amounts of water are removed by a modified molecular sieve, and finally, trace dust impurities are removed by precision filtration, yielding a high-purity regenerated acetone product, which is then stored in a sealed container for reuse. The residual alcohol waste liquid at the bottom of the column can be further fractionated and recovered, achieving full resource utilization of all components with no waste liquid.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency fractionation apparatus for acetone in a multi-component solvent, comprising a distillation column (1), characterized in that: A settling tank (2) is installed on one side of the distillation column (1). A floating material guide bucket (3) is installed on the inner wall of the settling tank (2). A processing box (4) is fixedly connected to the outer wall of one side of the settling tank (2). A fixing seat (5) is provided on the inner wall of the processing box (4). A filter cylinder (6) is rotatably connected to the outer wall of the fixing seat (5). A transmission and conveying assembly (7) is fixedly connected to one side of the fixing seat (5). A reflux assembly (8) is provided below one side of the filter cylinder (6). A filter residue collection assembly (9) is fixedly connected to the outer wall of one side of the processing box (4).

2. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 1, characterized in that: The bottom end of the floating material guide bucket (3) is fixedly connected to a guide pipe (301). The guide pipe (301) is set in an inclined structure. The other end of the guide pipe (301) passes through the inner wall of the settling tank (2) and the outer wall of the treatment box (4) to extend into the interior and is fixedly connected to the fixing seat (5).

3. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 1, characterized in that: The bottom inner wall of the processing tank (4) is fixedly connected to a reflux cylinder (401). The top of the reflux cylinder (401) is open. The bottom of the reflux cylinder (401) is fixedly connected to a reflux pipe (402). The other end of the reflux pipe (402) is fixedly connected to the top inner wall of the settling tank (2).

4. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 1, characterized in that: A sealing ring (501) is fixedly connected to the outer wall of the fixed base (5), and the outer wall of the sealing ring (501) is rotatably connected to the inner wall of the filter cartridge (6).

5. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 3, characterized in that: The filter cylinder (6) is arranged in an inclined structure. A ring rack (601) is fixedly connected to the inner wall of one end of the filter cylinder (6) connected to the fixed base (5). A ring rack (602) is fixedly connected to the outer wall of the filter cylinder (6). A discharge end (603) is rotatably connected to the other end of the filter cylinder (6). The discharge end (603) is fixedly connected to the inner wall of the processing box (4).

6. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 5, characterized in that: The transmission and conveying assembly (7) includes a motor (701), which is fixedly connected to the inner wall of the processing box (4). A worm gear (702) is fixedly connected to the output end of the motor (701), and a transmission wheel (703) is fixedly connected to the end of the worm gear (702). The transmission wheel (703) is meshed with a ring rack (601) for transmission.

7. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 6, characterized in that: The worm gear (702) is equipped with a worm wheel (704) on one side for meshing transmission. A universal joint (705) is fixedly connected to the worm wheel (704). The other end of the universal joint (705) is rotatably connected to the fixed seat (5). A helical rod (706) is fixedly connected to one end of the universal joint (705) inside the filter cylinder (6). The outer wall of the helical rod (706) is in sliding contact with the inner wall of the filter cylinder (6).

8. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 5, characterized in that: The reflux assembly (8) includes a fixed frame (801), one end of which is fixedly connected to the inner wall of the processing box (4). A universal joint (802) is rotatably connected to one end of the fixed frame (801). An adjusting wheel (803) is fixedly connected to one end of the universal joint (802). The adjusting wheel (803) is meshed with a ring rack (602). A bending rod (80) is fixedly connected to the other end of the universal joint (802). 4) The other end of the bending rod (804) is rotatably connected to the inner wall of the processing box (4). A movable frame (805) is slidably fitted on the outer wall of the bending part of the bending rod (804). A guide rod (806) is fixedly connected to the bottom end of the movable frame (805). The bottom end of the guide rod (806) passes through the fixed frame (801) and is fixedly connected to the squeeze plug (807). The outer wall of the squeeze plug (807) is slidably fitted with the inner wall of the return cylinder (401).

9. The high-efficiency fractionation apparatus for acetone in a multi-component solvent according to claim 5, characterized in that: The filter residue collection assembly (9) includes a fixed cover (901), the top opening of the fixed cover (901) is fixedly connected to the outer end of the discharge end (603), a sealing seat (902) is slidably fitted on the inner wall of the opening end of the fixed cover (901), an electric push rod (903) is fixedly connected between the inner end of the sealing seat (902) and the inner wall of the fixed cover (901), a placement groove (904) is opened near the outer top of the sealing seat (902), a receiving dish (905) is movably inserted into the inner wall of the placement groove (904), a top ejector (906) is slidably fitted through the inner wall of the bottom end of the placement groove (904), a trapezoidal block (907) is fixedly connected to the inner wall of the bottom end of the fixed cover (901), and the outer end of the top ejector (906) is slidably contacted with the trapezoidal block (907).

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