A method for extracting molecular membrane

Abstract

The present invention belongs to the technical field of nanomolecular film preparation, and specifically relates to a method for extracting a molecular film, wherein a connecting plate and a motor are installed on the top of the inner cylinder, and the output end of the motor is connected to a transmission rod, the motor is connected to a stirring assembly through the transmission rod, a tilting assembly is installed at the bottom of the stirring assembly, an arc-shaped slide groove is installed at the bottom of the inner cylinder, an annular groove is installed on the side wall of the inner cylinder, the arc-shaped slide groove is connected to the annular groove, and the tilting assembly is located inside the arc-shaped slide groove for sliding. The present invention drives the tilting assembly to slide by moving the stirring assembly downward, so that the center of gravity of the inner cylinder moves from the bottom of the inner cylinder to the side wall of the inner cylinder, so that it tilts, and at this time the motor can simultaneously stir and oscillate the compounds inside the inner cylinder through the stirring assembly and the tilting assembly, thereby improving the dissolution efficiency of the compounds, and at the same time the tilting assembly can drive the inner cylinder to shake in a circle with the bottom as the center while sliding along the annular groove, so that the mixture inside the inner cylinder is pre-stratified, and the subsequent static stratification time is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of nano molecular film preparation, and specifically relates to a molecular film extraction method. Background Art

[0002] The preparation steps of nanomolecular membranes include pretreatment, purification and nanomolecular membrane growth. The pretreatment steps are as follows: select suitable mineral raw materials, then crush them, and finally use physical or chemical methods to remove some impurities in the crushed minerals. Purification is to extract nanoparticles by chemical (solubility difference) or physical (centrifugal separation) methods. Nanomolecular membrane growth is to prepare nanoparticles into nanomolecular membranes through physical vapor deposition (PVD) or electrochemical deposition (ECD).

[0003] Nanomolecular membrane purification technology usually uses extraction equipment and solvent extraction to purify nanoparticles from a solution. The extraction steps of the nanomolecular membrane are: adding a solvent and an extractant to the pre-treated compound in sequence, fully oscillating and stirring the mixture to transfer the nanoparticles from the raw material solution to the extractant, then taking out the extractant after standing and stratifying, and evaporating the extractant to obtain purified nanoparticles. However, the extraction equipment of the prior art oscillates and stirs the mixture in a distributed manner, which increases the processing time of the mixture and reduces the stratification efficiency of the mixture. Summary of the invention

[0004] The purpose of the present invention is to provide a molecular membrane extraction method to solve the technical problems in the prior art in view of the shortcomings of the prior art.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A method for extracting a molecular membrane comprises the following specific steps:

[0007] Step S1: adding the pre-treated compound and the solution into the inner cylinder through the liquid inlet to dissolve the compound in the solution;

[0008] Step S2: adding an extractant into the inner cylinder through the liquid inlet, so that the nanoparticles in the solution compound are dissolved in the extractant;

[0009] Step S3: When the compound needs to be stirred, the motor is started, and the motor drives the stirring assembly to move downward through the transmission rod. At this time, the stirring assembly drives the counterweight to slide along the arc-shaped slide groove through the connecting rod. When the counterweight slides to the inside of the annular groove, the center of gravity of the inner cylinder is on the side wall of the inner cylinder, and the inner cylinder is tilted at this time;

[0010] Step S4: After the counterweight enters the annular groove, as the transmission rod continues to rotate, the transmission rod drives the blades to rotate and stir the mixture in the inner cylinder, and at the same time the counterweight slides along the annular groove, causing the inner cylinder to shake in a circle with the bottom as the center;

[0011] Step S5: When the mixture is fully stirred, the motor reverses to drive the stirring assembly and the tilting assembly to move upward and reset. When the second engaging block is engaged with the first engaging block, the first connecting block is separated from the second connecting block. At this time, the motor drives the inner cylinder to rotate through the transmission rod and the stirring assembly. The rotation of the inner cylinder drives the compounds therein to rotate, and the centrifugal action of the inner cylinder accelerates the stratification of the extractant.

[0012] Step S6: After the stratification is completed, the extractant is separated from the inner cylinder, and the nanoparticles in the extractant are extracted by evaporating the extractant.

[0013] As a further optimization or improvement of this solution, step S3 specifically includes the following steps:

[0014] Step S31: When stirring the mixture, the motor can rotate forward and reverse cyclically. When the motor reverses, the motor drives the stirring assembly to move upward through the transmission rod. The upward movement of the motor drives the blades to separate from the mixture, so that the second clamping block contacts the first clamping block. As the motor continues to reverse, the motor drives the inner drum and the mixture therein to reverse.

[0015] Step S32: When the motor rotates forward, the motor drives the stirring assembly downward through the transmission rod, so that the locking block 1 disengages from the locking block 2 and drives the blades to rotate forward. When the blades are immersed in the mixture, the forward rotating blades stir the reversed mixture to form a turbulent flow.

[0016] As a further optimization or improvement of this solution, the inner cylinder is connected to the fixed outer cylinder through a ball head at the bottom, a connecting plate is rotatably installed on the top of the inner cylinder, a motor is installed on the connecting plate, and the output end of the motor is connected to the transmission rod, the connecting plate is connected to the outer wall of the fixed outer cylinder through a buffer assembly, the motor is connected to the stirring assembly through the transmission rod, a tilting assembly is installed at the bottom of the stirring assembly, an arc-shaped slide groove is installed at the bottom of the inner cylinder, an annular groove is installed on the side wall of the inner cylinder, the arc-shaped slide groove is connected to the annular groove, and the tilting assembly slides inside the arc-shaped slide groove.

[0017] As a further optimization or improvement of the present solution, the buffer assembly includes a buffer rod and a mounting head. A buffer sleeve is installed on the connecting plate. The buffer sleeve is connected to the buffer rod through a spring. A mounting head is installed at one end of the buffer rod close to the fixed outer cylinder, and the mounting head is engaged with the outer wall of the fixed outer cylinder.

[0018] As a further optimization or improvement of this solution, the stirring assembly includes a transmission sleeve and blades. The transmission sleeve is transmission-connected to the transmission rod, the blades are installed on the transmission sleeve, a locking block 2 is installed on the top of the transmission sleeve, a protective sleeve is installed on the bottom of the transmission sleeve, the protective sleeve is arranged on the transmission rod, and a tilting assembly is installed at the bottom of the protective sleeve.

[0019] As a further optimization or improvement of this solution, the inner cylinder includes a matching sleeve and a snap-fit ​​block 1, the matching sleeve is installed at the center of the inner cylinder, the transmission rod is located in the matching sleeve, the snap-fit ​​block 1 is installed at the bottom of the matching sleeve, and the snap-fit ​​block 1 is snap-fitted with the snap-fit ​​block 2.

[0020] As a further optimization or improvement of this solution, the tilting assembly includes a connecting rod and a counterweight block, the connecting rod is connected to the bottom of the protective cover, a connecting sleeve is installed on the counterweight block, a connecting block one is arranged inside the connecting sleeve, a connecting block two is installed at the bottom of the connecting rod, and connecting block one is engaged with connecting block two.

[0021] As a further optimization or improvement of this solution, a liquid inlet is installed on the top of the connecting plate, the liquid inlet is connected to the inner cylinder, a ball groove is opened at the bottom of the fixed outer cylinder, and the ball groove is installed in cooperation with the ball head.

[0022] Beneficial effects of the present invention:

[0023] (1) The present invention drives the tilting component to slide by moving the stirring component downward, so that the center of gravity of the inner cylinder moves from the bottom of the inner cylinder to the side wall of the inner cylinder, causing it to tilt. At this time, the motor can simultaneously stir and oscillate the compounds inside the inner cylinder through the stirring component and the tilting component, thereby improving the dissolution efficiency of the compounds. At the same time, the tilting component can slide along the annular groove to drive the inner cylinder to shake in a circle with the bottom as the center, thereby pre-stratifying the mixture inside the inner cylinder and reducing the subsequent static stratification time.

[0024] (2) When the motor of the present invention is reversed, the motor drives the stirring assembly to move upward through the transmission rod. At this time, the blades move upward and separate from the mixture. As the stirring assembly moves upward, the second engaging block contacts the first engaging block. As the motor continues to reverse, the motor drives the inner cylinder and the mixture therein to reverse. When the motor is forward, the motor drives the stirring assembly to move downward through the transmission rod, so that the second engaging block separates from the first engaging block. At the same time, the motor drives the blades to rotate forward. When the blades are immersed in the mixture, the forward-rotating blades stir the reversed mixture to form a turbulent flow, thereby increasing the dissolution rate of the mixture, avoiding emulsification of the mixture, and improving the efficiency of solution stratification. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the internal structure of the present invention.

[0028] Figure 3 for Figure 2 Schematic diagram of the A part structure.

[0029] Figure 4 for Figure 2 Schematic diagram of the structure of part B.

[0030] Figure 5 It is an exploded view of the overall structure of the present invention.

[0031] Figure 6 It is a schematic diagram of the internal structure of the inner tube 2.

[0032] Figure 7 for Figure 6 Schematic diagram of the C-site structure.

[0033] The following are marked in the figure: 1. Fixed outer cylinder; 2. Inner cylinder; 21. Matching sleeve; 22. Snap-fit ​​block 1; 3. Connecting plate; 4. Buffer assembly; 41. Buffer sleeve; 42. Spring; 43. Buffer rod; 44. Mounting head; 5. Motor; 6. Transmission rod; 7. Stirring assembly; 71. Transmission sleeve; 72. Blade; 73. Protective sleeve; 74. Snap-fit ​​block 2; 8. Tilting assembly; 81. Connecting rod; 82. Counterweight block; 83. Connecting sleeve; 84. Connecting block 1; 85. Connecting block 2; 9. Arc slide groove; 10. Ring groove; 11. Ball head; 12. Ball groove; 13. Liquid inlet. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-Figure 6 , a molecular membrane extraction method, which comprises the following specific steps:

[0036] Step S1: adding the pre-treated compound and the solution into the inner cylinder 2 through the liquid inlet 13 to dissolve the compound in the solution;

[0037] Step S2: adding the extractant into the inner cylinder 2 through the liquid inlet 13, so that the nanoparticles in the solution compound are dissolved in the extractant;

[0038] Step S3: When the compound needs to be stirred, the motor 5 is started, and the motor 5 drives the stirring assembly 7 to move downward through the transmission rod 6. At this time, the stirring assembly 7 drives the counterweight block 82 to slide along the arc-shaped slide groove 9 through the connecting rod 81. When the counterweight block 82 slides to the inside of the annular groove 10, the center of gravity of the inner cylinder 2 is on the side wall of the inner cylinder 2, and the inner cylinder 2 is tilted at this time;

[0039] Step S4: After the counterweight 82 enters the annular groove 10, as the transmission rod 6 continues to rotate, the transmission rod 6 drives the blade 72 to rotate and stir the mixture in the inner tube 2, and at the same time, the counterweight 82 slides along the annular groove 10, causing the inner tube 2 to shake in a circle with the bottom as the center;

[0040] Step S5: When the mixture is fully stirred, the motor 5 rotates in reverse to drive the stirring assembly 7 and the tilting assembly 8 to move upward and reset. When the second engaging block 74 engages with the first engaging block 22, the first connecting block 84 separates from the second connecting block 85. At this time, the motor 5 drives the inner cylinder 2 to rotate through the transmission rod 6 and the stirring assembly 7. The rotation of the inner cylinder 2 drives the compounds therein to rotate, and the centrifugal action of the inner cylinder 2 accelerates the stratification of the extractant.

[0041] Step S6: After the stratification is completed, the extractant is separated from the inner tube 2, and the nanoparticles in the extractant are extracted by evaporating the extractant.

[0042] It should be noted that whether step S5 in the present invention is implemented depends on the actual implementation situation. When the solubility difference between the extractant and the solute in the mixture is large, step S4 can effectively separate the extractant and the solute; when the solubility difference between the extractant and the solute in the mixture is small, step S5 is required to separate the extractant and the solute.

[0043] See also Figure 2-Figure 7 , the step S3 specifically comprises the following steps:

[0044] Step S31: When stirring the mixture, the motor 5 can rotate forward and reversely in a cycle. When the motor 5 reverses, the motor 5 drives the stirring assembly 7 to move upward through the transmission rod 6, and the motor 5 drives the blade 72 to separate from the mixture, so that the second clamping block 74 conflicts with the first clamping block 22. As the motor 5 continues to reverse, the motor 5 drives the inner cylinder 2 and the mixture therein to reverse.

[0045] Step S32: When the motor 5 rotates forward, the motor 5 drives the stirring assembly 7 to move downward through the transmission rod 6, so that the locking block 1 22 disengages from the locking block 2 74 and drives the blade 72 to rotate forward. When the blade 72 is immersed in the mixture, the forward rotating blade 72 stirs the reversed mixture to form a turbulent flow.

[0046] See also Figure 1-Figure 2The inner cylinder 2 is connected to the fixed outer cylinder 1 through the ball head 11 at the bottom, the top of the inner cylinder 2 is rotatably installed with a connecting plate 3, the motor 5 is installed on the connecting plate 3, and the output end of the motor 5 is connected to the transmission rod 6, the connecting plate 3 is connected to the outer wall of the fixed outer cylinder 1 through the buffer assembly 4, the motor 5 is connected to the stirring assembly 7 through the transmission rod 6, the bottom of the stirring assembly 7 is installed with a tilting assembly 8, the bottom of the inner cylinder 2 is installed with an arc-shaped slide groove 9, the side wall of the inner cylinder 2 is installed with an annular groove 10, the arc-shaped slide groove 9 is connected with the annular groove 10, and the tilting assembly 8 is located inside the arc-shaped slide groove 9 and slides.

[0047] Specifically, a liquid inlet 13 is installed on the top of the connecting plate 3 , the liquid inlet 13 is connected to the inner tube 2 , a ball groove 12 is provided on the bottom of the fixed outer tube 1 , and the ball groove 12 is installed in cooperation with the ball head 11 .

[0048] It should be noted that, during the process of stirring the mixture inside the inner cylinder 2, the motor 5 can rotate forward and backward in a cycle. When the motor 5 is reversed, the motor 5 drives the stirring assembly 7 to move upward through the transmission rod 6, at which time the blade 72 moves upward and separates from the mixture, and as the stirring assembly 7 moves upward, the second clamping block 74 conflicts with the first clamping block 22, and as the motor 5 continues to reverse, the motor 5 will drive the inner cylinder 2 and the mixture therein to reverse; when the motor 5 is forward, the motor 5 drives the stirring assembly 7 downward through the transmission rod 6, so that the second clamping block 74 is separated from the first clamping block 22, and at the same time, the motor 5 drives the blade 72 to rotate forward, and when the blade 72 is immersed in the mixture, the forward-rotating blade 72 stirs the reversed mixture to form a turbulent flow, thereby increasing the dissolution rate of the mixture, avoiding emulsification of the mixture, and improving the efficiency of solution stratification.

[0049] When the motor 5 rotates forward, the motor 5 drives the stirring assembly 7 to move downward through the transmission rod 6. At this time, the stirring assembly 7 drives the counterweight 82 to slide along the arc-shaped slide groove 9 through the connecting rod 81. When the counterweight 82 slides to the inside of the annular groove 10, the center of gravity of the inner tube 2 is on the side wall of the inner tube 2, and the counterweight 82 drives the inner tube 2 to tilt. As the transmission rod 6 continues to rotate, the transmission rod 6 drives the blade 72 to rotate and stir the mixture of the inner tube 2. At the same time, the counterweight 82 slides along the annular groove 10, so that the inner tube 2 oscillates in a circle with the bottom as the center. The present invention drives the tilting assembly 8 to slide by moving the stirring assembly 7 downward, so that the center of gravity of the inner tube 2 moves from the bottom of the inner tube 2 to the side wall of the inner tube 2, so that it tilts. At this time, the motor 5 can stir and oscillate the compounds inside the inner tube 2 through the stirring assembly 7 and the tilting assembly 8 at the same time, thereby improving the dissolution efficiency of the compounds. At the same time, the tilting assembly 8 slides along the annular groove 10 to drive the inner tube 2 to oscillate in a circle with the bottom as the center, so that the mixture inside the inner tube 2 is pre-stratified, thereby reducing the subsequent static stratification time.

[0050] It should be noted that the transmission mode of the transmission rod 6 and the transmission sleeve 71 can be screw transmission and thread transmission. The transmission mode of the transmission rod 6 and the transmission sleeve 71 in the present invention is the prior art, and the applicant will not elaborate on it, which does not affect the integrity of this solution.

[0051] See also Figure 2-Figure 3 The buffer assembly 4 includes a buffer rod 43 and a mounting head 44. A buffer sleeve 41 is installed on the connecting plate 3. The buffer sleeve 41 is connected to the buffer rod 43 through a spring 42. A mounting head 44 is installed at one end of the buffer rod 43 close to the fixed outer tube 1, and the mounting head 44 is engaged with the outer wall of the fixed outer tube 1.

[0052] It should be noted that, during the shaking of the inner cylinder 2 , the spring 42 is continuously compressed and released, thereby protecting the inner cylinder 2 and preventing the inner cylinder 2 from sliding excessively and bumping against the inner wall of the fixed outer cylinder 1 .

[0053] See also Figure 2 and Figure 4 The stirring assembly 7 includes a transmission sleeve 71 and a blade 72. The transmission sleeve 71 is transmission-connected to the transmission rod 6. The blade 72 is installed on the transmission sleeve 71. A locking block 2 74 is installed on the top of the transmission sleeve 71. A protective sleeve 73 is installed at the bottom of the transmission sleeve 71. The protective sleeve 73 is sleeved on the transmission rod 6. The tilting assembly 8 is installed at the bottom of the protective sleeve 73.

[0054] Specifically, the inner cylinder 2 includes a matching sleeve 21 and a snap-fit ​​block 22. The matching sleeve 21 is installed at the center of the inner cylinder 2. The transmission rod 6 is located in the matching sleeve 21. The snap-fit ​​block 22 is installed at the bottom of the matching sleeve 21. The snap-fit ​​block 22 is snap-fitted with the snap-fit ​​block 74.

[0055] It should be noted that the transmission rod 6 is located in the matching sleeve 21, wherein the matching sleeve 21 can provide protection for the transmission rod 6; the bottom of the transmission sleeve 71 and the bottom of the transmission rod 6 have a snap-fit ​​structure similar to the snap-fit ​​block 2 74 and the snap-fit ​​block 1 22, see Figure 4 When the transmission sleeve 71 moves down to the bottom of the transmission rod 6, the transmission sleeve 71 engages with the bottom of the transmission rod 6. At this time, the counterweight 82 enters the annular groove 10. When the transmission rod 6 continues to rotate, the transmission rod 6 will drive the transmission sleeve 71 and the blades 72 thereon to rotate, so that the blades 72 stir the mixture inside the inner tube 2. At the same time, the transmission sleeve 71 is connected to the tilting assembly 8 through the protective sleeve 73. The rotation of the transmission sleeve 71 can drive the counterweight 82 to slide along the annular groove 10.

[0056] See also Figure 6-Figure 7 The tilting assembly 8 includes a connecting rod 81 and a counterweight block 82. The connecting rod 81 is connected to the bottom of the protective cover 73. The counterweight block 82 is installed with a connecting sleeve 83. A connecting block 1 84 is arranged inside the connecting sleeve 83. A connecting block 2 85 is installed at the bottom of the connecting rod 81. The connecting block 1 84 is engaged with the connecting block 2 85.

[0057] It should be noted that when the stirring assembly 7 moves upward, the counterweight block 82 is reset, and the center of gravity of the inner cylinder 2 returns to the bottom of the inner cylinder 2. When the stirring assembly 7 continues to move upward, the engaging block 2 74 engages with the engaging block 1 22. At this time, the connecting block 2 85 is separated from the contact with the connecting block 1 84. As the motor 5 rotates, the motor 5 drives the inner cylinder 2 and the mixture therein to rotate through the engaging block 2 74 and the engaging block 1 22.

[0058] The implementation principle of the present invention is:

[0059] During the process of stirring the mixture inside the inner cylinder 2, the motor 5 can rotate forward and backward in a cycle. When the motor 5 is reversed, the motor 5 drives the stirring assembly 7 to move upward through the transmission rod 6, at which time the blade 72 moves upward and separates from the mixture. As the stirring assembly 7 moves upward, the second clamping block 74 conflicts with the first clamping block 22. As the motor 5 continues to reverse, the motor 5 drives the inner cylinder 2 and the mixture therein to reverse; when the motor 5 is forward, the motor 5 drives the stirring assembly 7 to move downward through the transmission rod 6, so that the second clamping block 74 is separated from the first clamping block 22, and at the same time, the motor 5 drives the blade 72 to rotate forward. When the blade 72 is immersed in the mixture, the forward-rotating blade 72 stirs the reversed mixture to form a turbulent flow, thereby increasing the dissolution rate of the mixture, avoiding emulsification of the mixture, and improving the efficiency of solution stratification.

[0060] When the motor 5 rotates forward, the motor 5 drives the stirring assembly 7 to move downward through the transmission rod 6. At this time, the stirring assembly 7 drives the counterweight 82 to slide along the arc-shaped slide groove 9 through the connecting rod 81. When the counterweight 82 slides to the inside of the annular groove 10, the center of gravity of the inner tube 2 is on the side wall of the inner tube 2, and the counterweight 82 drives the inner tube 2 to tilt. As the transmission rod 6 continues to rotate, the transmission rod 6 drives the blade 72 to rotate and stir the mixture of the inner tube 2. At the same time, the counterweight 82 slides along the annular groove 10, so that the inner tube 2 oscillates in a circle with the bottom as the center. The present invention drives the tilting assembly 8 to slide by moving the stirring assembly 7 downward, so that the center of gravity of the inner tube 2 moves from the bottom of the inner tube 2 to the side wall of the inner tube 2, so that it tilts. At this time, the motor 5 can stir and oscillate the compounds inside the inner tube 2 through the stirring assembly 7 and the tilting assembly 8 at the same time, thereby improving the dissolution efficiency of the compounds. At the same time, the tilting assembly 8 slides along the annular groove 10 to drive the inner tube 2 to oscillate in a circle with the bottom as the center, so that the mixture inside the inner tube 2 is pre-stratified, thereby reducing the subsequent static stratification time.

[0061] The above shows and describes 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, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A method for extracting a molecular membrane, characterized in that: The specific steps include: Step S1: adding the pre-treated compound and the solution into the inner cylinder (2) through the liquid inlet (13) to dissolve the compound in the solution; Step S2: adding an extractant into the inner cylinder (2) through the liquid inlet (13) to dissolve the nanoparticles in the solution compound in the extractant; Step S3: When the compound needs to be stirred, the motor (5) is started, and the motor (5) drives the stirring assembly (7) to move downward through the transmission rod (6). At this time, the stirring assembly (7) drives the counterweight block (82) to slide along the arc-shaped slide groove (9) through the connecting rod (81). When the counterweight block (82) slides to the inside of the annular groove (10), the center of gravity of the inner cylinder (2) is on the side wall of the inner cylinder (2), and the inner cylinder (2) is tilted; Step S4: After the counterweight (82) enters the annular groove (10), as the transmission rod (6) continues to rotate, the transmission rod (6) drives the blades (72) to rotate and stir the mixture in the inner cylinder (2), and at the same time, the counterweight (82) slides along the annular groove (10), causing the inner cylinder (2) to shake in a circle with the bottom as the center; Step S5: When the mixture is fully stirred, the motor (5) is reversed to drive the stirring assembly (7) and the tilting assembly (8) to move upward and reset. When the second engaging block (74) is engaged with the first engaging block (22), the connecting block (84) is separated from the second connecting block (85). At this time, the motor (5) drives the inner cylinder (2) to rotate through the transmission rod (6) and the stirring assembly (7). The rotation of the inner cylinder (2) drives the compounds therein to rotate, and the centrifugal action of the inner cylinder (2) accelerates the stratification of the extractant. Step S6: After the stratification is completed, the extractant is separated from the inner tube (2), and the nanoparticles in the extractant are extracted by evaporating the extractant.

2. The method for extracting a molecular membrane according to claim 1, characterized in that: The step S3 specifically comprises the following steps: Step S31: When stirring the mixture, the motor (5) can rotate forward and reversely in a cycle. When the motor (5) rotates in reverse, the motor (5) drives the stirring assembly (7) to move upward through the transmission rod (6). The motor (5) drives the blade (72) to separate from the mixture, so that the second engaging block (74) and the first engaging block (22) come into conflict. As the motor (5) continues to rotate in reverse, the motor (5) drives the inner cylinder (2) and the mixture therein to rotate in reverse. Step S32: When the motor (5) rotates forward, the motor (5) drives the stirring assembly (7) to move downward through the transmission rod (6), so that the first engaging block (22) is disengaged from the second engaging block (74) and drives the blade (72) to rotate forward. When the blade (72) is immersed in the mixture, the forward-rotating blade (72) stirs the reverse-rotating mixture to form a turbulent flow.

3. The method for extracting a molecular membrane according to claim 1, characterized in that: The inner cylinder (2) is connected to the fixed outer cylinder (1) via a ball head (11) at the bottom; a connecting plate (3) is rotatably mounted on the top of the inner cylinder (2); a motor (5) is mounted on the connecting plate (3), and an output end of the motor (5) is connected to a transmission rod (6); the connecting plate (3) is connected to an outer wall of the fixed outer cylinder (1) via a buffer assembly (4); the motor (5) is connected to a stirring assembly (7) via a transmission rod (6); a tilting assembly (8) is mounted at the bottom of the stirring assembly (7); an arc-shaped slide groove (9) is mounted at the bottom of the inner cylinder (2); an annular groove (10) is mounted on the side wall of the inner cylinder (2); the arc-shaped slide grooves (9) are connected to the annular grooves (10), and the tilting assembly (8) is located inside the arc-shaped slide groove (9) and slides.

4. The method for extracting a molecular membrane according to claim 3, characterized in that: The buffer assembly (4) comprises a buffer rod (43) and a mounting head (44); a buffer sleeve (41) is mounted on the connecting plate (3); the buffer sleeve (41) is connected to the buffer rod (43) via a spring (42); a mounting head (44) is mounted on one end of the buffer rod (43) close to the fixed outer cylinder (1); and the mounting head (44) is engaged with the outer wall of the fixed outer cylinder (1).

5. The method for extracting a molecular membrane according to claim 3, characterized in that: The stirring assembly (7) comprises a transmission sleeve (71) and blades (72); the transmission sleeve (71) is transmission-connected to the transmission rod (6); the blades (72) are mounted on the transmission sleeve (71); a second clamping block (74) is mounted on the top of the transmission sleeve (71); a protective sleeve (73) is mounted on the bottom of the transmission sleeve (71); the protective sleeve (73) is sleeved on the transmission rod (6); and a tilting assembly (8) is mounted on the bottom of the protective sleeve (73).

6. The method for extracting a molecular membrane according to claim 5, characterized in that: The inner cylinder (2) comprises a matching sleeve (21) and a first engaging block (22). The matching sleeve (21) is installed at the center of the inner cylinder (2). The transmission rod (6) is located in the matching sleeve (21). The first engaging block (22) is installed at the bottom of the matching sleeve (21). The first engaging block (22) engages with the second engaging block (74).

7. The method for extracting a molecular membrane according to claim 6, characterized in that: The tilting assembly (8) comprises a connecting rod (81) and a counterweight (82); the connecting rod (81) is connected to the bottom of the protective sleeve (73); the counterweight (82) is mounted on the connecting sleeve (83); a connecting block 1 (84) is arranged inside the connecting sleeve (83); a connecting block 2 (85) is mounted on the bottom of the connecting rod (81); and the connecting block 1 (84) is engaged with the connecting block 2 (85).

8. The method for extracting a molecular membrane according to claim 3, characterized in that: The top of the connecting plate (3) is provided with a liquid inlet (13), the liquid inlet (13) is connected to the inner cylinder (2), and the bottom of the fixed outer cylinder (1) is provided with a ball groove (12), the ball groove (12) is installed in coordination with the ball head (11).

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