Charging system for flash spinning equipment

Abstract

The utility model discloses a charging system for flash spinning equipment, which comprises a storage tank, a solvent filling pipe is fixedly arranged at the upper end of the storage tank, a solid material filling pipe is arranged on one side of the solvent filling pipe at the upper end of the storage tank, and a stirring mechanism for stirring and mixing materials is arranged in the storage tank. The stirring mechanism comprises a first transmission rod, a connecting rod, a second transmission rod, a stirring rod, a connecting bin and a connecting pipe, and the first transmission rod is movably arranged in the middle of the inner side of the storage tank through a bearing. The flash spinning device is good in using effect, the traditional mode that flash spinning solvent is added from one side is changed into the mode that the solvent is added in the middle of the storage tank through the extension pipe, so that the solvent is injected from the center of the storage tank and can be rapidly diffused to the periphery to form radial symmetrical flow, the flow mode better conforms to the situation that the solvent is thrown out through stirring, dead zones can be reduced, and the service life of the flash spinning device is prolonged. The polymer particles are more fully contacted with the solvent, and the mixing time is shortened.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding systems, specifically a feeding system for flash spinning equipment. Background Technology

[0002] Flash spinning technology involves mixing a polymer with a solvent in a high-temperature and high-pressure environment and then spraying the solution from the spinneret into a normal-temperature and normal-pressure environment. The solvent evaporates rapidly when it is transferred from the high-temperature and high-pressure liquid phase to the normal-temperature and normal-pressure environment. The remaining polymer is squeezed, stretched, and scattered through the spinneret to form a fiber bundle containing many ultrafine fibers.

[0003] In existing technologies, the feeding system for flash spinning equipment typically requires adding solid polymers and liquid solvents to a storage tank, followed by the addition of an inert gas. However, in these systems, the solid materials and liquid solvents are usually added from both sides of the tank. When it's necessary to homogenize the solid materials and liquid solvents later, the solvent must travel a long distance from one side of the tank to the other, resulting in a long mixing path. This process is also susceptible to the influence of the tank's shape (such as the curvature of a cylindrical tank). Furthermore, the centrifugal force during agitation causes the solid materials and liquid to be easily thrown outwards. Adding solvent from one side of the storage tank reduces mixing efficiency, making it time-consuming to homogenize the solid materials and liquid solvents. Therefore, an improved feeding system for flash spinning equipment is needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide a feeding system for flash spinning equipment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a feeding system for flash spinning equipment, comprising a storage tank, a solvent injection pipe fixedly installed at the upper end of the storage tank, a solid material injection pipe installed on one side of the solvent injection pipe at the upper end of the storage tank, and a stirring mechanism for mixing materials inside the storage tank, the stirring mechanism comprising a first transmission rod, a connecting rod, a second transmission rod, a stirring rod, a connecting chamber, and a connecting pipe, the first transmission rod being movably installed in the middle of the inner side of the storage tank via a bearing, the connecting rod being fixedly installed at the lower end of the first transmission rod, the second transmission rod being movably installed at both ends of the connecting rod via bearings, the stirring rod being fixedly installed on the outer surface of the second transmission rod, the connecting chamber being movably installed in the middle of the surface of the first transmission rod via a bearing, and a connecting pipe being installed between the connecting chamber and the solvent injection pipe, the solvent injection pipe being interconnected with the interior of the connecting chamber via the connecting pipe.

[0006] Preferably, a gear is fixedly installed at the upper end of the second transmission rod, and a toothed ring is fixedly installed at the upper end of the inner side wall of the storage tank. The gear and the toothed ring mesh with each other. When the first transmission rod rotates and drives the second transmission rod to revolve around the first transmission rod, the meshing action of the gear and the toothed ring can cause the second transmission rod to rotate on its own axis. This can drive the stirring rod to revolve around the first transmission rod while rotating on its own axis around the second transmission rod. This can improve the stirring effect of the stirring rod. Combined with the solvent added in partial layers from the storage tank, radial symmetrical flow stirring is formed to reduce the "dead zone", so that the polymer particles and solvent can be in more sufficient contact and the mixing time is shortened.

[0007] Preferably, the storage tank is fixedly provided with a discharge pipe at the lower end, through which the molten and mixed solid material and liquid solvent mixture can be conveniently discharged into the screw extruder or other processing equipment, so that subsequent flash spinning can be carried out.

[0008] Preferably, a plurality of one-way valves are uniformly fixed on both sides of the surface of the connecting chamber, and the one-way valves are open from the connecting chamber to the inside of the storage tank; through this one-way valve, it can be ensured that the solvent can enter the storage tank through the pressurized inside of the connecting chamber, while the mixture of solid material and liquid solvent inside the storage tank cannot enter the connecting chamber.

[0009] Preferably, an inert gas injection pipe is fixedly installed on one side of the storage tank, and a gas pressure detection device is fixedly installed in the middle of the inert gas injection pipe. Inert gas can be injected into the storage tank through the inert gas injection pipe to maintain a stable high-pressure environment, so as to facilitate the mutual neutralization of solid and liquid solvents.

[0010] Preferably, a power transmission assembly is provided at the middle of the upper end of the storage tank. The power transmission assembly is connected to the first transmission rod, and the power transmission assembly can drive the first transmission rod to rotate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When the solvent is injected into the storage tank, the solvent will first enter the connecting chamber and then, under pressure, it can flow out from the one-way valve. In this way, the solvent can be added in layers from the middle of the storage tank, making the solvent addition very uniform, which facilitates subsequent stirring and shortens the mixing time.

[0013] 2. When it is necessary to stir and mix solvent and solid material to facilitate subsequent melting and mixing, the rotation of the first transmission rod can drive the rotation of the second transmission rod. Since the gear and the gear ring are meshed with each other, when the rotation of the first transmission rod drives the second transmission rod to revolve around the first transmission rod, the meshing of the gear and the gear ring can cause the second transmission rod to rotate on its own axis. In this way, the stirring rod can be driven to revolve around the first transmission rod while rotating on its own axis around the second transmission rod. This can improve the stirring effect of the stirring rod. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a feeding system for a flash spinning equipment according to this utility model;

[0015] Figure 2 This is a cross-sectional view of a feeding system for a flash spinning equipment according to this utility model;

[0016] Figure 3 This utility model relates to a feeding system for a flash spinning equipment. Figure 2 A magnified view of point A in the middle.

[0017] In the diagram: 1. Storage tank; 2. Solvent filling pipe; 3. Solid material filling pipe; 4. First transmission rod; 5. Connecting rod; 6. Second transmission rod; 7. Stirring rod; 8. Connecting chamber; 9. Connecting pipe; 10. Gear; 11. Gear ring; 12. Discharge pipe; 13. One-way valve; 14. Inert gas filling pipe; 15. Gas pressure detection device; 16. Power transmission assembly. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3This utility model provides a technical solution: a feeding system for a flash spinning equipment, including a storage tank 1. A solvent injection pipe 2 is fixedly installed at the upper end of the storage tank 1. A solid material injection pipe 3 is installed on one side of the solvent injection pipe 2 at the upper end of the storage tank 1. A stirring mechanism for mixing materials is installed inside the storage tank 1. The stirring mechanism includes a first transmission rod 4, a connecting rod 5, a second transmission rod 6, a stirring rod 7, a connecting chamber 8, and a connecting pipe 9. The first transmission rod 4 is movably installed in the middle of the inner side of the storage tank through a bearing. A connecting rod 5 is fixedly installed at the lower end of the first transmission rod 4. The second transmission rod 6 is movably installed at both ends of the connecting rod 5 through bearings. A stirring rod 7 is fixedly installed on the outer surface of the second transmission rod 6. A connecting chamber 8 is movably installed in the middle of the surface of the first transmission rod 4 through a bearing. A connecting pipe 9 is installed between the connecting chamber 8 and the solvent injection pipe 2. The solvent injection pipe 2 is interconnected with the interior of the connecting chamber 8 through the connecting pipe 9.

[0020] A gear 10 is fixedly installed at the upper end of the second transmission rod 6, and a toothed ring 11 is fixedly installed at the upper end of the inner side wall of the storage tank 1. The gear 10 and the toothed ring 11 mesh with each other. When the first transmission rod 4 rotates and drives the second transmission rod 6 to revolve around the first transmission rod 4, the meshing action of the gear 10 and the toothed ring 11 can cause the second transmission rod 6 to rotate on its own. In this way, the stirring rod 7 can revolve around the first transmission rod 4 while rotating on its own around the second transmission rod 6. This can improve the stirring effect of the stirring rod 7. Combined with the solvent added in partial layers from the storage tank, it forms radially symmetrical flow stirring to reduce the "dead zone", so that the polymer particles and the solvent can be in more sufficient contact and the mixing time can be shortened.

[0021] The storage tank 1 is fixedly provided with a discharge pipe 12 at the lower end. The mixture of melted and mixed solid material and liquid solvent can be conveniently discharged into the screw extruder or other processing equipment through the discharge pipe 12, so that subsequent flash spinning can be carried out.

[0022] Several one-way valves 13 are uniformly fixed on both sides of the surface of the connecting chamber 8. The one-way valves 13 are open from the connecting chamber 8 to the inside of the storage tank 1. Through this one-way valve 13, it can be ensured that the solvent can enter the storage tank 1 under pressure through the connecting chamber 8, while the mixture of solid materials and liquid solvent inside the storage tank 1 cannot enter the connecting chamber 8.

[0023] An inert gas injection pipe 14 is fixedly installed on one side of the storage tank. A gas pressure detection device 15 is fixedly installed in the middle of the inert gas injection pipe 14. Inert gas can be injected into the storage tank 1 through the inert gas injection pipe 14 to maintain a stable high-pressure environment, so as to facilitate the mutual neutralization of solid and liquid solvents in the future.

[0024] A power transmission assembly 16 is provided at the middle of the upper end of the storage tank 1. The power transmission assembly 16 is connected to the first transmission rod 4, and the first transmission rod 4 can be driven to rotate through the power transmission assembly 16.

[0025] Working principle: When using this device, materials can be injected into the storage tank 1 through the solid material injection pipe 3. A material control valve is installed in the middle of the solid material injection pipe 3 so that the solid material injection pipe 3 can be closed at any time when needed. Then, solvent can be injected into the storage tank 1. When the device injects solvent into the storage tank 1, the solvent will first enter the connecting chamber 8. Then, under pressure, it can flow out from the one-way valve 13. In this way, the solvent can be added in layers from the middle of the storage tank 1, so that the solvent is added evenly, which facilitates the subsequent stirring work.

[0026] When it is necessary to stir and mix the solvent and solid material to facilitate subsequent melting and mixing, the rotation of the first drive rod 4 can drive the rotation of the second drive rod 6. Since the gear 10 and the gear ring 11 mesh with each other, when the rotation of the first drive rod 4 drives the second drive rod 6 to revolve around the first drive rod 4, the meshing action of the gear 10 and the gear ring 11 can cause the second drive rod 6 to rotate on its own axis. This can drive the stirring rod 7 to revolve around the first drive rod 4 and rotate on its own axis around the second drive rod 6 at the same time. This can improve the stirring effect of the stirring rod 7. Combined with the solvent added in partial layers from the storage tank, it forms radially symmetrical flow stirring to reduce "dead zones", so that the polymer particles and solvents can be in more sufficient contact, and the mixing time can be shortened.

[0027] 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.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding system for a flash spinning equipment, comprising a storage tank (1), characterized in that: The storage tank (1) is fixedly provided with a solvent filling pipe (2) at the upper end. The storage tank (1) is provided with a solid material filling pipe (3) on one side of the solvent filling pipe (2) at the upper end. The storage tank (1) is provided with a stirring mechanism for mixing materials. The stirring mechanism includes a first transmission rod (4), a connecting rod (5), a second transmission rod (6), a stirring rod (7), a connecting chamber (8), and a connecting pipe (9). The first transmission rod (4) is movably provided in the middle of the inner side of the storage tank through a bearing. The connecting rod (5) is fixedly provided at the lower end of the first transmission rod (4). The second transmission rod (6) is movably provided at both ends of the connecting rod (5) through a bearing. The stirring rod (7) is fixedly provided on the outer surface of the second transmission rod (6). The connecting chamber (8) is movably provided in the middle of the surface of the first transmission rod (4) through a bearing. The connecting chamber (8) and the solvent filling pipe (2) are provided with a connecting pipe (9). The solvent filling pipe (2) is connected to the interior of the connecting chamber (8) through the connecting pipe (9).

2. The feeding system for a flash spinning equipment according to claim 1, characterized in that: A gear (10) is fixedly installed on the upper end of the second transmission rod (6), and a toothed ring (11) is fixedly installed on the upper end of the inner side wall of the storage tank (1). The gear (10) and the toothed ring (11) mesh with each other.

3. The feeding system for a flash spinning equipment according to claim 1, characterized in that: The storage tank (1) is fixedly provided with a discharge pipe (12) at its lower end.

4. The feeding system for a flash spinning equipment according to claim 1, characterized in that: Several one-way valves (13) are uniformly fixed on both sides of the surface of the connecting chamber (8), and the one-way valves (13) are connected from the connecting chamber (8) to the inside of the storage tank (1).

5. The feeding system for a flash spinning equipment according to claim 1, characterized in that: An inert gas filling pipe (14) is fixedly installed on one side of the storage tank (1), and a gas pressure detection device (15) is fixedly installed in the middle of the inert gas filling pipe (14).

6. The feeding system for a flash spinning equipment according to claim 1, characterized in that: The storage tank (1) is provided with a power transmission assembly (16) at the middle of its upper end, and the power transmission assembly (16) is connected to the first transmission rod (4) for transmission.

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