Polymer emulsifying equipment for nanofiber processing

Abstract

The invention relates to the technical field of polymer emulsification, in particular to polymer emulsification equipment for nanofiber processing, which comprises a tank body, a tank cover, a stirring rod and an emulsification head, and further comprises a driving assembly and a pumping assembly, the stirring rod penetrates through the tank cover, and the lower end of the stirring rod is connected with the emulsification head; the driving assembly is arranged on the tank cover and connected with the stirring rod, and the driving assembly drives the stirring rod and the emulsifying head to rotate at a high speed when working. Through the arrangement of the driving assembly and the suction assembly, on the basis that solutions with different densities are fully mixed, liquid drops which are thrown to the edge position under the action of centrifugal force and have large particle sizes are continuously pumped to the center position in the tank body, so that the liquid drops with different particle sizes are fully mixed; and the emulsifying effect is ensured, and the product quality is ensured at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of polymer emulsification, in particular to polymer emulsification equipment for nanofiber processing. Background Art

[0002] Nanofiber refers to a linear material with a nanometer diameter and a longer length with a certain aspect ratio. During production, the spinning operation is carried out by spraying a polymer solution in an electrostatic field. When preparing the polymer solution, the raw materials need to be mixed together and emulsified. The emulsification effect of the polymer emulsion determines the quality of the final nanofiber.

[0003] Existing polymer emulsification equipment commonly uses mechanical stirring emulsification. When the equipment is working, the propeller stirs the polymer solution at high speed, and the polymer solution is mixed and emulsified under the action of shear force. However, different raw material solutions will stratify due to density differences, affecting the emulsification effect and, in turn, product quality. To address the above problems, there are already good solutions in the existing technology, such as the mixed emulsification equipment disclosed in Patent No.: CN221846847U. This continuously pumps the solution with lower density at the top into the solution with higher density below, stirring and mixing the solutions during the pumping process, further improving the emulsification effect. However, the following defects still exist: the factors affecting the emulsification effect and product quality mainly include stirring speed, stirring time and stirring temperature, among which the stirring speed has a much greater impact on the emulsification effect and product quality than the stirring time and stirring temperature. During the rotation of the stirring paddle, the polymer solution will be driven to rotate. The faster the speed, the greater the centrifugal force generated, and the larger droplets in the polymer solution will be easily thrown to the edge, while the smaller droplets will remain on the inside, affecting the mixing effect of droplets of different sizes in the polymer solution, thereby affecting the product quality; and the smaller the speed, the smaller the shear force generated in the raw material solution, which means that the cutting and impact effect of the emulsification equipment on the raw material solution is weaker, resulting in larger droplets or particles in the emulsion, wider particle size distribution, poor uniformity and stability of the emulsion, affecting the emulsification effect of the polymer emulsion, and still affecting the product quality.

[0004] Therefore, in order to solve the above problems, a polymer emulsification device for nanofiber processing is proposed. Summary of the Invention

[0005] The present invention aims to provide a polymer emulsification device for nanofiber processing that solves the problem that the centrifugal force generated during high-speed stirring can cause particles to be thrown to the edges, affecting the mixing of droplets of different sizes and, in turn, affecting product quality. By providing a drive assembly and a suction assembly, the device can achieve thorough mixing of solutions of different densities while continuously pumping larger droplets that have been thrown to the edges by centrifugal force toward the center of the tank, thereby achieving thorough mixing of droplets of different sizes and ensuring both emulsification and product quality.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A polymer emulsification device for nanofiber processing includes a tank body, a tank cover, a stirring rod, and an emulsifying head, as well as a drive assembly and a pumping assembly. The stirring rod is arranged through the tank cover, and the lower end of the stirring rod is connected to the emulsifying head. The drive assembly is arranged on the tank cover and connected to the stirring rod. When the drive assembly is in operation, it drives the stirring rod and the emulsifying head to rotate at high speed. The pumping assembly includes a sleeve and a piston ring. The sleeve is hollow and sleeved with the stirring rod. The piston ring is slidably arranged inside the sleeve and connected to the drive assembly. When the stirring rod rotates, the drive assembly drives the piston ring to move up and down reciprocatingly. When the piston ring moves upward, the solution in the lower half of the inner edge of the tank body is sucked into the sleeve, and the solution stored in the sleeve is discharged to the lower half of the middle position of the tank body in the direction opposite to the rotation of the stirring rod. When the piston ring moves downward, the solution in the upper half of the inner edge of the tank body is sucked into the sleeve, and the solution stored in the sleeve is discharged to the upper half of the middle position of the tank body in the direction opposite to the rotation of the stirring rod.

[0008] Preferably, the driving assembly includes a motor, a rotating rod, a pulley 1, a pulley 2 and a belt, the motor is arranged on the tank cover, the rotating rod is arranged at the output end of the motor, the pulley 1 is arranged on the rotating rod, the pulley 2 is arranged on the stirring rod, the pulley 1 and the pulley 2 are connected by a belt transmission, the diameter of the pulley 1 is larger than the diameter of the pulley 2, the driving assembly also includes a thread, the thread is opened on the rotating rod and is a reciprocating thread, the piston ring is connected to the rotating rod through the thread, and when the rotating rod rotates, the piston ring is driven to move up and down reciprocatingly through the thread.

[0009] By adopting the above solution, when the motor is working, the stirring rod can be driven to rotate by pulley one and pulley two, and the transmission ratio between pulley one and pulley two can be used to increase the rotation speed of the stirring rod. In the process of driving the piston ring to reciprocate along the axis of the tank body at a conventional speed, the stirring rod can drive the emulsification head to rotate at high speed, thereby achieving high-speed stirring of the polymer solution without affecting the normal operation of the pumping component.

[0010] Preferably, the pumping assembly also includes a slider, a connecting piece, a driving rod, a bellows, a suction pipe and a delivery pipe, the slider is threadedly connected to the rotating rod, the connecting piece is arranged on the slider, the driving rod is arranged on the connecting piece, the driving rod passes through the tank cover and the sleeve, the lower end of the driving rod is connected to the piston ring, the bellows is arranged between the tank cover and the sleeve and is sleeved with the driving rod, the suction pipe and the delivery pipe are both connected to the end of the sleeve, the suction pipe is provided with a one-way valve 1, and the delivery pipe is provided with a one-way valve 2.

[0011] It can be seen that there are many ways to achieve the pumping of polymer solution inside the tank. The conventional method is to fixedly install a water pump inside the tank and use the operation of the water pump to continuously pump the polymer solution. Considering the actual working conditions, the position of the water pump for extracting and transporting the polymer solution is fixed. To achieve the pumping of polymer solution in areas with different heights, it is necessary to install different numbers of water pumps, which increases the energy consumption of the equipment. Therefore, this solution is adopted. During operation, the motor can directly drive the drive rod, allowing the drive rod to move back and forth in the vertical direction. At the same time, the one-way conduction effect of one-way valve 1 and one-way valve 2 is used to achieve the continuous pumping of polymer solution in areas with different heights. This can control the manufacturing cost of the equipment while improving the mixing effect of the polymer solution, thereby ensuring product quality.

[0012] Preferably, the suction pipe includes two guide tubes 1 and two hollow columns 1, the two guide tubes 1 are symmetrically arranged at the two ends of the sleeve and both penetrate into the interior of the sleeve, the two hollow columns 1 are respectively arranged at the ends of the corresponding guide tube 1 and are connected with the corresponding guide tube 1, the one-way valve 1 is arranged on the hollow column 1 and is connected to the interior of the hollow column 1, and the one-way valve 1 is located on the outside of the hollow column 1. One end of the one-way valve 1 faces in the opposite direction of the rotation direction of the stirring rod and is inclined toward the outside of the tank body.

[0013] By adopting the above scheme, the stirring rod and the emulsifying head can make the rotation direction of the polymer solution opposite to the installation direction of the one-way valve when driving the polymer solution to rotate, so that when the piston ring moves up or down, the droplets with larger particle size at the edge can be smoothly drawn into the interior of the corresponding hollow column through the one-way valve.

[0014] Preferably, the conveying pipe includes an upper guide pipe 2, a lower guide pipe 2 and two hollow columns 2, the upper guide pipe 2 and the lower guide pipe 2 are respectively arranged at the two ends of the sleeve, and both pass through the interior of the sleeve, the lower end of the upper guide pipe 2 and the upper end of the lower guide pipe 2 are respectively connected to the corresponding hollow column 2, and are communicated with the corresponding hollow column 2, the lower end of the upper guide pipe 2 and the upper end of the lower guide pipe 2 are coplanar, the one-way valve 2 is arranged on the hollow column 2 and is communicated with the interior of the hollow column 2, and the end of the one-way valve 2 located on the outside of the hollow column 2 faces in the direction opposite to the rotation direction of the stirring rod.

[0015] It is known that after mixing different raw material solutions, stratification will occur inside the tank due to different densities. When the stirring rod drives the emulsifying head to rotate, it is difficult to achieve rapid mixing of raw material solutions of different densities, thus affecting the emulsification effect. Therefore, this solution is adopted. When the stirring rod drives the polymer solution inside the tank through the emulsifying head to rotate at high speed, the lower-density solution at the top can be continuously transferred to the higher-density solution below, and the higher-density solution at the bottom can be continuously transferred to the lower-density solution above, thus achieving effective mixing of solutions of different densities, ensuring the emulsification effect of the polymer emulsion while also guaranteeing product quality.

[0016] Preferably, the lengths of the horizontal sections of the upper guide tube 2 and the lower guide tube 2 are set to be equal, and the length of the horizontal section of the guide tube 1 is greater than the lengths of the horizontal sections of the upper guide tube 2 and the lower guide tube 2.

[0017] As can be seen, the high-speed rotation of the polymer solution inside the tank generates a strong centrifugal force. Under the action of centrifugal force, larger droplets are thrown to the edge of the tank, while smaller droplets gather in the center of the tank, affecting the mixing of solutions of different particle sizes and thus limiting the emulsification effect. Therefore, this solution is adopted. As the piston ring moves up and down, it can continuously transport larger droplets from the edge of the tank to the center of the tank, increasing the mixing and collision frequency between droplets of different particle sizes, thereby ensuring product quality.

[0018] Preferably, the one-way valve 1 and the one-way valve 2 are both provided in plurality, and the aperture ratio of the multiple one-way valves 2 on the lower guide tube 2 to the lower guide tube 2 is arranged to increase from top to bottom.

[0019] It can be seen that since the emulsifying head is set at the lower end of the stirring rod, the emulsifying head will cause the solution inside the tank to generate a vortex during the process of following the rotation of the stirring rod, and the vortex intensity of the solution gradually weakens from the position of the emulsifying head to the surrounding areas, that is, the centrifugal force generated by the solution inside the tank during rotation is the largest at the position of the emulsifying head, and the greater the centrifugal force, the easier it is for droplets with larger particle sizes to be thrown to the edge of the tank, affecting the emulsification effect, so this solution is adopted. During the upward movement of the piston ring, the solution inside the sleeve enters the interior of the hollow column 2 below through the upper guide tube 2 and is discharged from the interior of the corresponding one-way valve 2, and the content of the solution discharged through the one-way valve 2 per unit time can be reduced from top to bottom, so that more raw material solutions with lower density flow to the bottom position inside the tank, improving the mixing effect between different raw material solutions, thereby ensuring product quality.

[0020] Preferably, the lower end of the upper guide tube 2 is arranged at the same height as the lower end of the upper hollow column, and the upper end of the lower guide tube 2 is arranged at the same height as the upper end of the lower hollow column 2.

[0021] By adopting the above scheme, when the piston ring moves upward, the solution inside the sleeve and above the piston ring can be transported to the lower half of the tank body, and when the piston ring moves downward, the solution inside the sleeve and below the piston ring can be transported to the upper half of the tank body, thereby achieving effective mixing of raw material solutions of different densities, and ensuring product quality on the basis of improving the emulsification effect.

[0022] Preferably, the delivery pipe also includes a one-way valve three, which is arranged through the bottom of the lower guide tube two and is inclined toward the emulsifying head. The aperture ratio of the one-way valve three to the lower guide tube two is the same as the aperture ratio of the one-way valve two at the bottom to the lower guide tube two.

[0023] By adopting the above scheme, the solution at the edge of the upper half of the tank can be transported to the position of the emulsifying head under high pressure, so that droplets with smaller density but larger particle size collide with droplets with larger density but smaller particle size at the center position to generate turbulence. The turbulence effect is increased on the basis of reducing centrifugal force, and the number of droplets with larger particle size thrown to the edge by centrifugal force is reduced. At the same time, the shear force generated by turbulence can be used to achieve mixing between different raw materials, thereby further ensuring product quality.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. Through the provided driving assembly and pumping assembly, the emulsifying head can be driven to stir the polymer solution inside the tank at high speed during the operation of the motor. At the same time, the larger droplets that are thrown to the edge position under the action of centrifugal force during the high-speed stirring process can be pumped to the center position inside the tank in the opposite direction of the rotation of the stirring rod, so as to achieve the remixing of droplets of different particle sizes. In the process of remixing, the turbulence generated by the collision of droplets of different particle sizes can be used to improve the mixing effect of the polymer solution. On the basis of reducing the centrifugal force to prevent more droplets of larger particle sizes from being thrown to the edge position, the droplets of different particle sizes can be fully mixed, thereby ensuring product quality.

[0026] 2. By providing the piston, hollow column 1 and hollow column 2, when the piston moves up and down reciprocatingly and pumps the polymer solution at the edge, the droplets with larger particle size and floating in the upper area due to lower density are transported to the lower area at the center of the tank body, while the droplets with larger particle size and sinking in the lower area due to higher density are transported to the upper area at the center of the tank body, thereby achieving mixing of solutions of different densities and different particle sizes, thereby improving the emulsification effect of the polymer solution and ensuring product quality.

[0027] 3. By setting one-way valve 1, one-way valve 2 and one-way valve 3, as well as setting the installation direction of one-way valve 1, one-way valve 2 and one-way valve 3, the vortex effect generated by the emulsification head on the polymer solution when it rotates with the stirring rod can be reduced during the process of transporting the polymer solution inside the tank from the edge position to the center position, thereby reducing the centrifugal force generated by the polymer solution when it is stirred, reducing the droplets with larger particle size being thrown to the edge position, and increasing the turbulence effect (the turbulence effect can be controlled by the motor to control the speed of the stirring rod), and utilizing the shear force generated by the turbulent action to achieve emulsification of the polymer solution, thereby further ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 Schematic diagram of the connection structure between the driving assembly and the pumping assembly of the present invention;

[0030] Figure 3 For the present invention Figure 2 An enlarged view of the local part A in the middle;

[0031] Figure 4 Schematic diagram of the connection structure of the stirring rod, sleeve, suction pipe and delivery pipe of the present invention;

[0032] Figure 5 Schematic diagram of the connection structure of the sleeve and the hollow column 1 and the hollow column 2 of the present invention;

[0033] Figure 6 It is a schematic diagram of the cross-sectional connection structure of the sleeve and the piston ring, the hollow column 1 and the hollow column 2 of the present invention;

[0034] Figure 7 2 is a flow state diagram of the solution inside the first hollow column and the second hollow column when the stirring rod of the present invention moves upward;

[0035] Figure 8 This is a flow state diagram of the solution inside the hollow column 1 and the hollow column 2 when the stirring rod of the present invention moves downward.

[0036] In the figure: 1. Tank body; 2. Tank cover; 3. Stirring rod; 4. Emulsifying head; 5. Driving assembly; 51. Motor; 52. Rotating rod; 521. Thread; 53. Pulley 1; 54. Pulley 2; 55. Belt; 6. Pumping assembly; 61. Casing; 62. Piston ring; 63. Slider; 64. Connecting piece; 65. Driving rod; 66. Bellows; 67. Suction pipe; 671. Guide pipe 1; 672. Hollow column 1; 68. Delivery pipe; 681. Upper guide pipe 2; 682. Lower guide pipe 2; 683. Hollow column 2; 7. One-way valve 1; 8. One-way valve 2; 9. One-way valve 3. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0038] See also Figures 1 to 8 The present invention provides a polymer emulsification device for nanofiber processing, and the technical solution is as follows:

[0039] For details, please refer to Figure 1 、 Figure 2 and Figure 3A polymer emulsification device for nanofiber processing includes a tank body 1, a tank cover 2, a stirring rod 3 and an emulsifying head 4, and also includes a driving component 5 and a pumping component 6. The stirring rod 3 is set through the tank cover 2, and the lower end of the stirring rod 3 is connected to the emulsifying head 4. The driving component 5 is set on the tank cover 2 and connected to the stirring rod 3. When the driving component 5 is working, it drives the stirring rod 3 and the emulsifying head 4 to rotate at a high speed. The driving component 5 includes a motor 51, a rotating rod 52, a pulley 1 53, a pulley 2 54 and a belt 55. The motor 51 is set on the tank cover 2, and the rotating rod 52 drives the stirring rod 3 and the emulsifying head 4 to rotate at a high speed. The rod 52 is arranged at the output end of the motor 51, the pulley 1 53 is arranged on the rotating rod 52, and the pulley 2 54 is arranged on the stirring rod 3. The pulley 1 53 and the pulley 2 54 are connected by a belt 55. The diameter of the pulley 1 53 is larger than the diameter of the pulley 2 54. The driving component 5 also includes a thread 521. The thread 521 is opened on the rotating rod 52 and is a reciprocating thread. The piston ring 62 is connected to the rotating rod 52 through the thread 521. When the rotating rod 52 rotates, the piston ring 62 is driven to move up and down reciprocatingly through the thread 521.

[0040] Under the above setting mode, when the motor 51 is working, it can directly drive the rotating rod 52 to rotate, and the rotating rod 52 can drive the pulley 1 53 to rotate during the rotation process. Since the pulley 1 53 and the pulley 2 54 are connected by the belt 55, and the pulley 2 54 is connected to the stirring rod 3, and the diameter of the pulley 1 53 is larger than the diameter of the pulley 2 54, the stirring rod 3 can be driven to rotate at a high speed greater than the rotation speed of the rotating rod 52 while the motor 51 drives the rotating rod 52 to rotate at a normal speed, thereby driving the emulsification head 4 arranged at the lower end of the stirring rod 3 to rotate at a high speed, thereby realizing high-speed stirring of the polymer emulsion inside the tank body 1, and then realizing preliminary emulsification of the polymer emulsion inside the tank body 1.

[0041] As an embodiment of the present invention, refer to Figure 2 and Figure 4 The pumping assembly 6 includes a sleeve 61 and a piston ring 62. The sleeve 61 is hollow and is sleeved with the stirring rod 3. The piston ring 62 is slidably arranged inside the sleeve 61. The pumping assembly 6 also includes a slider 63, a connecting piece 64, a driving rod 65, a bellows 66, a suction pipe 67 and a delivery pipe 68. The slider 63 is threadedly sleeved with the rotating rod 52 through a thread 521. The connecting piece 64 is arranged on the slider 63. The driving rod 65 is arranged on the connecting piece 64. The driving rod 65 passes through the tank cover 2 and the sleeve 61. The lower end of the driving rod 65 is connected to the piston ring 62. The bellows 66 is arranged between the tank cover 2 and the sleeve 61 and is sleeved with the driving rod 65, which can prevent the solution inside the sleeve 61 from leaking from the connection position between the sleeve 61 and the driving rod 65. The suction pipe 67 and the delivery pipe 68 are both connected to the end of the sleeve 61. A one-way valve 7 is provided on the suction pipe 67, and a one-way valve 8 is provided on the delivery pipe 68.

[0042] Under the above arrangement, when the rotating rod 52 rotates, the threaded connection between the rotating rod 52 and the slider 63 can drive the slider 63 to move in the vertical direction. Since the slider 63 is connected to the driving rod 65 via the connecting member 64, the upward or downward movement of the slider 63 can respectively drive the driving rod 65. When the driving rod 65 moves up or down, it can drive the piston ring 62 to move up or down synchronously. Since the piston ring 62 is sleeved inside the sleeve 61, during the upward and downward movement of the piston ring 62, the negative pressure between the end of the piston ring 62 and the interior of the sleeve 61 and the one-way flow effect of the corresponding one-way valve 7 can be used to pump some of the solution at the edge of the tank body 1 into the sleeve 61. At the same time, the solution stored in the sleeve 61 can be transported into the tank body 1 through the one-way flow effect of the one-way valve 8. This achieves continuous pumping of solution at different locations within the tank body 1, achieving sufficient mixing of the solutions at different locations, thereby ensuring product quality.

[0043] As an embodiment of the present invention, refer to Figure 4 、 Figure 5 and Figure 6 The suction pipe 67 includes two guide pipes 671 and two hollow columns 672. The two guide pipes 671 are symmetrically arranged at both ends of the sleeve 61 and both pass through the interior of the sleeve 61. The two hollow columns 672 are respectively arranged at the ends of the corresponding guide pipes 671 and are connected to the corresponding guide pipes 671. The one-way valve 7 is arranged on the hollow column 672 and is connected to the interior of the hollow column 672. The one-way valve 7 is located on the outside of the hollow column 672, facing the direction opposite to the rotation direction of the stirring rod 3, and is inclined toward the outside of the tank body 1; the delivery pipe 68 includes an upper guide pipe 681, a lower guide pipe 682 and two hollow columns 683. The upper guide pipe 681 and the lower guide pipe 682 are connected to the inner wall of the tank body 1. 82 are respectively arranged at both ends of the sleeve 61, and both pass through the interior of the sleeve 61, the lower end of the upper guide tube 2 681 and the upper end of the lower guide tube 2 682 are respectively connected to the corresponding hollow column 2 683, and are communicated with the corresponding hollow column 2 683, the lower end of the upper guide tube 2 681 and the upper end of the lower guide tube 2 682 are arranged in the same plane, the one-way valve 2 8 is arranged on the hollow column 2 683 and is communicated with the interior of the hollow column 2 683, the one-way valve 2 8 is located on the outside of the hollow column 2 683 and faces in the direction opposite to the rotation direction of the stirring rod 3, the lower end of the upper guide tube 2 681 is arranged at the same height as the lower end of the upper hollow column 1 672, and the upper end of the lower guide tube 2 682 is arranged at the same height as the upper end of the lower hollow column 2 683.

[0044] Under the above-mentioned setting, when the piston ring 62 moves upward, the part of the solution with higher density in the lower half of the tank body 1 can be pumped into the interior of the sleeve 61 through the corresponding one-way valve 1 7, and the solution with lower density pumped from the interior of the tank body 1 into the sleeve 61 can be transported to the interior of the corresponding hollow column 2 683 through the upper guide pipe 2 681, and finally discharged to the lower half of the tank body 1 through the corresponding one-way valve 2 8; when the piston ring 62 moves downward, the part of the solution with lower density in the upper half of the tank body 1 can be pumped into the interior of the sleeve 61 through the corresponding one-way valve 1 7, and the solution with higher density pumped from the interior of the tank body 1 into the sleeve 61 can be transported to the interior of the corresponding hollow column 2 683 through the lower guide pipe 2 682, and finally discharged to the upper half of the tank body 1 through the corresponding one-way valve 2 8, so that raw material solutions of different densities can be effectively mixed, thereby improving the emulsification effect of the polymer solution and ensuring product quality.

[0045] As an embodiment of the present invention, refer to Figure 5 and Figure 6 The lengths of the horizontal sections of the upper guide tube 681 and the lower guide tube 682 are set to be equal, and the length of the horizontal section of the guide tube 1 671 is greater than the lengths of the horizontal sections of the upper guide tube 681 and the lower guide tube 682.

[0046] Under the above-mentioned setting, the droplets with larger particle sizes that are thrown to the edge position by centrifugal force during the rotation of the polymer solution can be re-transported to the center position inside the tank body 1, so that the droplets of different particle sizes can be fully mixed, and the turbulence can be used to increase the collision effect between the droplets of different particle sizes during the transportation process, thereby further ensuring the product quality.

[0047] As an embodiment of the present invention, refer to Figure 4 、 Figure 5 and Figure 6 There are multiple one-way valves 7 and two-way valves 8. The aperture ratio of the multiple one-way valves 8 on the lower guide tube 682 to the lower guide tube 682 is increased from top to bottom. The delivery pipe 68 also includes a one-way valve 3 9. The one-way valve 3 9 is arranged through the bottom of the lower guide tube 682 and is inclined toward the emulsifying head 4. The aperture ratio of the one-way valve 3 9 to the lower guide tube 682 is the same as the aperture ratio of the one-way valve 2 8 at the bottom to the lower guide tube 682.

[0048] Under the above-mentioned setting, the solution transported to the center position of the tank body 1 and located in the lower half area can more easily overcome the centrifugal force and be smoothly transported to the position of the emulsifying head 4, so that the droplets with larger particle size and smaller density collide with the emulsifying head 4. During the high-speed rotation of the emulsifying head 4, the particle size of the polymer solution can be further refined, thereby ensuring product quality on the basis of improving the emulsification effect.

[0049] Working principle: In order to make the polymer solution be thrown to the edge by centrifugal force during high-speed rotation and the droplets with larger particle size can be remixed with the droplets in the center, refer to Figure 6 、 Figure 7 and Figure 8 By providing the sleeve 61, the piston ring 62, the suction pipe 67 and the delivery pipe 68, the piston ring 62 can move up and down along the axis of the sleeve 61, and the suction pipe 67 can be used to continuously pump the droplets with larger particle sizes gathered at the edge of the tank body 1 due to centrifugal force to the center of the tank body 1, so that solutions with different particle sizes can be fully mixed, thereby ensuring the emulsification effect; in order to effectively mix solutions with different densities in the polymer solution, reference is made to Figure 5 、 Figure 6 、 Figure 7 and Figure 8 By providing the upper guide tube 2 681, the lower guide tube 2 682 and the two hollow columns 1 672, the solution with a lower density sucked into the interior of the sleeve 61 can be transported to the lower half of the interior of the tank body 1 using the upper guide tube 2 681 and the corresponding hollow column 2 683, while the solution with a higher density at the edge position can be transported to the upper half of the interior of the tank body 1 using the lower guide tube 2 682 and the corresponding hollow column 2 683, thereby promoting the mixing of solutions with different densities, further ensuring the emulsification effect, and thus ensuring product quality.

[0050] Specifically: the polymer solution to be emulsified is added into the tank body 1 and the tank cover 2 is closed, and the motor 51 is started. During the operation of the motor 51, the rotating rod 52 is driven to rotate. During the rotation of the rotating rod 52, the transmission connection of the pulley 1 53, the pulley 2 54 and the belt 55 is used to drive the stirring rod 3 to rotate at a high speed greater than the rotation speed of the rotating rod 52. At this time, the emulsifying head 4 at the lower end of the stirring rod 3 will rotate synchronously with the stirring rod 3 at a high speed to achieve high-speed stirring of the polymer solution in the tank body 1. Since the rod wall of the rotating rod 52 is provided with a thread 521, the rotating rod 52 can drive the slider 63 to move back and forth along the axis direction of the tank body 1 through the threaded sleeve between the slider 63 during the rotation process. During the movement process, the slider 63 can drive the piston ring 62 to move back and forth up and down through the connection between the connecting piece 64 and the driving rod 65 (the rotation process of the stirring rod 3 and the up and down movement process of the driving rod 65 in the vertical direction are independent of each other, that is, the stirring rod 3 achieves the rotation effect alone, and the driving rod 65 achieves the up and down movement effect in the vertical direction alone).

[0051] When the piston ring 62 moves upward, the pressure between the bottom of the piston ring 62 and the sleeve 61 can draw the solution with higher density at the edge of the interior of the tank body 1 and in the lower half area to the hollow column 672 below through the corresponding one-way valve 7, and finally enter the interior of the sleeve 61 and be located below the piston ring 62. When the piston ring 62 moves downward, the pressure between the top of the piston ring 62 and the sleeve 61 can draw the solution with lower density at the edge of the interior of the tank body 1 and in the upper half area to the interior of the hollow column 672 above, and finally enter the interior of the sleeve 61 and be located above the piston ring 62. Due to the difference in density between different solutions, the solution with higher density will sink to the lower half area inside the tank body 1. Therefore, during the upward movement of the piston ring 62, the solution with a smaller density inside the sleeve 61 being sucked can be pushed into the interior of the hollow column 2 683 below under the action of the upper guide tube 2 681, and finally discharged to the lower half area of ​​the center position inside the tank body 1 through the corresponding one-way valve 2 8 and one-way valve 3 9. During the downward movement of the piston ring 62, the solution with a larger density inside the sleeve 61 being sucked can be pushed into the interior of the hollow column 2 683 above under the action of the lower guide tube 2 682, and finally discharged to the upper half area of ​​the center position inside the tank body 1 through the corresponding one-way valve 2 8. Since the centrifugal force generated by the polymer solution inside the tank body 1 during the high-speed rotation of the stirring rod 3 and the emulsifying head 4 will throw the droplets with larger particle sizes to the edge, the solution can be continuously remixed with droplets of different densities and particle sizes after being sucked and transported by the hollow column 1 672 and the hollow column 2 683, thereby improving the mixing effect.

[0052] When the solution flows out from the one-way valve 1 7, the one-way valve 2 8 and the one-way valve 3 9, it can rotate in the opposite direction to the polymer solution inside the tank 1, thereby increasing the turbulence effect while reducing the centrifugal force, improving the mixing effect while accelerating the mixing speed, and effectively ensuring the emulsification effect, that is, ensuring the product quality.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A polymer emulsification device for nanofiber processing, comprising a tank body (1), a tank cover (2), a stirring rod (3) and an emulsification head (4), characterized in that: The invention also includes a driving assembly (5) and a pumping assembly (6), wherein the stirring rod (3) is arranged to pass through the tank cover (2), and the lower end of the stirring rod (3) is connected to the emulsifying head (4). The driving assembly (5) is arranged on the tank cover (2) and connected to the stirring rod (3). When the driving assembly (5) is working, it drives the stirring rod (3) and the emulsifying head (4) to rotate at a high speed. The pumping assembly (6) includes a sleeve (61) and a piston ring (62). The sleeve (61) is hollow and sleeved with the stirring rod (3). The piston ring (62) is slidably arranged inside the sleeve (61). The piston ring (62) is connected to the driving assembly (5). The stirring rod (3) ) rotates, the driving assembly (5) drives the piston ring (62) to move up and down reciprocatingly. When the piston ring (62) moves up, the solution at the inner edge position of the tank body (1) and located in the lower half area is sucked into the sleeve (61), and the solution stored in the sleeve (61) is discharged to the lower half area of ​​the middle position of the tank body (1) in the opposite direction to the rotation of the stirring rod (3). When the piston ring (62) moves down, the solution at the inner edge position of the tank body (1) and located in the upper half area is sucked into the sleeve (61), and the solution stored in the sleeve (61) is discharged to the upper half area of ​​the middle position of the tank body (1) in the opposite direction to the rotation of the stirring rod (3).

2. The polymer emulsification equipment for nanofiber processing according to claim 1, characterized in that: The driving assembly (5) comprises a motor (51), a rotating rod (52), a pulley 1 (53), a pulley 2 (54) and a belt (55), wherein the motor (51) is arranged on the tank cover (2), the rotating rod (52) is arranged at the output end of the motor (51), the pulley 1 (53) is arranged on the rotating rod (52), the pulley 2 (54) is arranged on the stirring rod (3), the pulley 1 (53) and the pulley 2 (54) are connected by a belt (55), the diameter of the pulley 1 (53) is larger than the diameter of the pulley 2 (54), and the driving assembly (5) further comprises a thread (521), the thread (521) is provided on the rotating rod (52) and is a reciprocating thread, the piston ring (62) is connected to the rotating rod (52) by the thread (521), and when the rotating rod (52) rotates, the piston ring (62) is driven by the thread (521) to move up and down reciprocatingly.

3. The polymer emulsification equipment for nanofiber processing according to claim 2, characterized in that: The pumping assembly (6) further comprises a slider (63), a connecting piece (64), a driving rod (65), a bellows (66), a suction pipe (67) and a delivery pipe (68). The slider (63) is threadedly connected to the rotating rod (52) through a thread (521). The connecting piece (64) is arranged on the slider (63). The driving rod (65) is arranged on the connecting piece (64). The driving rod (65) passes through the tank cover (2) and the sleeve (61). The lower end of the driving rod (65) is connected to the piston ring (62). The bellows (66) is arranged between the tank cover (2) and the sleeve (61) and is sleeved with the driving rod (65). The suction pipe (67) and the delivery pipe (68) are both connected to the end of the sleeve (61). A one-way valve (7) is arranged on the suction pipe (67), and a one-way valve (8) is arranged on the delivery pipe (68).

4. The polymer emulsification equipment for nanofiber processing according to claim 3, characterized in that: The suction pipe (67) includes two guide pipes (671) and two hollow columns (672). The two guide pipes (671) are symmetrically arranged at the two ends of the sleeve (61) and both pass through the interior of the sleeve (61). The two hollow columns (672) are respectively arranged at the ends of the corresponding guide pipes (671) and are connected to the corresponding guide pipes (671). The one-way valve (7) is arranged on the hollow column (672) and is connected to the interior of the hollow column (672). The one-way valve (7) is located on the outside of the hollow column (672) and faces the direction opposite to the rotation direction of the stirring rod (3), and is tilted toward the outside of the tank body (1).

5. The polymer emulsification equipment for nanofiber processing according to claim 4, characterized in that: The delivery pipe (68) includes an upper guide pipe (681), a lower guide pipe (682) and two hollow columns (683). The upper guide pipe (681) and the lower guide pipe (682) are respectively arranged at the two ends of the sleeve (61) and both pass through the interior of the sleeve (61). The lower end of the upper guide pipe (681) and the upper end of the lower guide pipe (682) are respectively connected to the corresponding hollow column (683) and communicated with the corresponding hollow column (683). The lower end of the upper guide pipe (681) and the upper end of the lower guide pipe (682) are coplanar. The one-way valve (8) is arranged on the hollow column (683) and communicated with the interior of the hollow column (683). The one-way valve (8) is located on the outside of the hollow column (683) and faces the direction opposite to the rotation direction of the stirring rod (3).

6. The polymer emulsification equipment for nanofiber processing according to claim 5, characterized in that: The lengths of the horizontal sections of the upper guide tube 2 (681) and the lower guide tube 2 (682) are set to be equal, and the length of the horizontal section of the guide tube 1 (671) is greater than the lengths of the horizontal sections of the upper guide tube 2 (681) and the lower guide tube 2 (682).

7. The polymer emulsification equipment for nanofiber processing according to claim 5, characterized in that: There are multiple one-way valves 1 (7) and 2 (8), and the aperture ratio of the multiple one-way valves 2 (8) on the lower guide tube 2 (682) to the lower guide tube 2 (682) is increased from top to bottom.

8. The polymer emulsification equipment for nanofiber processing according to claim 5, characterized in that: The lower end of the upper guide tube 2 (681) is arranged at the same height as the lower end of the upper hollow column 1 (672), and the upper end of the lower guide tube 2 (682) is arranged at the same height as the upper end of the lower hollow column 2 (683).

9. The polymer emulsification equipment for nanofiber processing according to claim 5, characterized in that: The delivery pipe (68) further includes a one-way valve three (9), which is arranged through the bottom of the lower guide pipe two (682) and is inclined toward the emulsifying head (4). The aperture ratio of the one-way valve three (9) and the lower guide pipe two (682) is the same as the aperture ratio of the one-way valve two (8) at the bottom and the lower guide pipe two (682).

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