Liquid supply and return system for electrostatic spinning machine

Abstract

The present invention provides a liquid supply and return system for an electrostatic spinning machine, including a liquid supply box and a gear pump liquid supply device. A motor is arranged in the gear pump liquid supply device, and the motor is connected to a metering pump. A liquid supply pipe and a liquid return pipe are arranged on the metering pump. The liquid supply pipe is connected to a spinning device, and the liquid return pipe is connected to the liquid supply box. A liquid return tank is also arranged on the spinning device, and the liquid return tank is connected to the liquid supply box through a liquid return pipe. The present invention adopts a high-precision precision gear metering pump, and a large-flow circulating liquid supply solves the problem of complex liquid supply, and at the same time can play a role in assisting the stirring of the solution, effectively preventing the precipitation of the solution, and ensuring that each linear electrode wire can be supplied with sufficient and uniform liquid. The whole process is visualized and transparent production, which is convenient for technical discovery and problem solving, and minimizes the failure downtime rate of the equipment liquid supply system and the difficulty of later overhaul and maintenance, thereby saving costs and reducing waste output.

Description

Technical Field

[0001] The invention relates to the field of electrostatic spinning, and in particular to a liquid supply and return system for an electrostatic spinning machine. Background Art

[0002] With the emergence of various types of high-yield electrospinning nozzles, a number of manufacturers developing electrospinning nanofiber pilot machines and production lines have gradually emerged at home and abroad. However, most of the various types of electrospinning pilot machines and production lines on the market currently use multi-needle spinning components, which have limited improvement in electrospinning capacity, and the resulting nanofiber diameter distribution span is very wide. At the same time, technical problems such as complex multi-needle spinning liquid supply equipment and easy clogging of needles lead to the inability to produce continuously. An important process link in electrospinning equipment is nozzle assembly, because the electric fields between electrospinning nozzles interfere with each other, and the arrangement of multiple nozzles in high-speed melt spinning is no longer suitable for electrospinning. At present, electrospinning equipment on the market mainly uses high-voltage power supplies, syringes, injection pumps, etc., and improves the productivity of nanofibers through a one-push multi-channel liquid supply mode. However, the injection method is far from meeting the mass production needs of enterprises. Summary of the invention

[0003] The present invention provides a liquid supply and return system for an electrostatic spinning machine, which solves the problem that the current electrostatic spinning equipment is inefficient and cannot meet the requirements of mass production.

[0004] The technical solution for realizing the present invention is:

[0005] A liquid supply and return system for an electrostatic spinning machine includes a liquid supply box and a gear pump liquid supply device. A motor is arranged in the gear pump liquid supply device, and the motor is connected to a metering pump. A liquid supply pipe and a liquid return pipe are arranged on the metering pump. The liquid supply pipe is connected to a spinning device, and the liquid return pipe is connected to the liquid supply box. A liquid return tank is also arranged on the spinning device, and the liquid return tank is connected to the liquid supply box through a liquid return pipe.

[0006] The gear pump liquid supply device includes a liquid supply side plate and a liquid supply end plate. A liquid supply cover plate is provided on the top of the gear pump liquid supply device. A liquid supply bearing plate and a motor mounting plate are also provided inside the gear pump liquid supply device. The motor is placed between the motor mounting plate and the liquid supply end plate. The metering pump is located between the liquid supply bearing plate and the liquid supply end plate.

[0007] The motor is connected to the metering pump via a transmission shaft, and the liquid supply box is placed on the liquid supply cover plate.

[0008] The spinning device comprises a support plate and a wire drawing top plate located at the upper end of the support plate, a wire brush box is arranged on the wire drawing top plate, and an insulating shell is arranged outside the wire brush box.

[0009] The liquid supply pipe passes through the insulating shell and is connected to the brush box. A liquid return groove is arranged on the lower end surface of the wire drawing top plate. The liquid return groove is placed below the brush box. A reflux pipe is arranged at the bottom of the liquid return groove.

[0010] A wire drawing reinforcement plate is provided at the lower end of the wire drawing top plate, and the wire drawing reinforcement plate is fixedly arranged on the support plate.

[0011] The brush boxes are arranged in a plurality, and a recovery pipe is arranged on the brush box farthest from the liquid inlet of the liquid supply pipe. The recovery pipe and the reflux pipe are connected to the liquid return pipe through a three-way valve.

[0012] A wire drawing sliding plate is also provided at the lower end of the support plate.

[0013] The beneficial effects of the present invention are as follows: the present invention adopts a high-precision precision gear metering pump, and a large-flow circulation liquid supply solves the problem of complex liquid supply, and at the same time can play an auxiliary stirring role in the solution, effectively preventing the solution from settling, and ensuring that each linear electrode wire can be supplied with sufficient and uniform liquid. The whole process is visualized and transparent, which facilitates technical discovery and problem solving, and minimizes the failure downtime rate of the equipment liquid supply system and the difficulty of later maintenance, thereby saving costs and reducing waste output. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 and 2 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 3 This is the front view of the device.

[0017] Figure 4 This is a top view.

[0018] Figure 5 Schematic diagram of the recovery pipe structure. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with 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.

[0020] like Figure 1As shown, a liquid supply and return system of an electrostatic spinning machine includes a liquid supply box 1 and a gear pump liquid supply device. A motor 2 is provided in the gear pump liquid supply device, and the motor 2 is connected to a metering pump 3. A liquid supply pipe 4 and a liquid return pipe 5 are provided on the metering pump 3. The liquid supply pipe 4 is connected to a spinning device, and the liquid return pipe 5 is connected to the liquid supply box 1. The spinning device is also provided with a liquid return tank 6, and the liquid return tank 6 is connected to the liquid supply box 1 through a liquid return pipe.

[0021] like Figure 2 As shown, the gear pump liquid supply device includes a liquid supply side plate 8 and a liquid supply end plate 9, the liquid supply side plate 8 and the liquid supply end plate 9 are symmetrically arranged, a liquid supply cover plate 10 is arranged on the top of the gear pump liquid supply device, and a liquid supply bearing plate 11 and a motor mounting plate 12 are also arranged in the gear pump liquid supply device, the motor 2 is placed between the motor mounting plate 12 and the liquid supply end plate 9, and the metering pump 3 is located between the liquid supply bearing plate 11 and the liquid supply end plate 9, as shown in FIG. Figure 5 As shown, the motor 2 is connected to the metering pump 3 via a transmission shaft, and the liquid supply box 1 is placed on the liquid supply cover plate 10 .

[0022] like Figure 3 As shown, the spinning device includes a support plate 14 and a wire drawing top plate 15 located at the upper end of the support plate 14, a wire brush box 16 is provided on the wire drawing top plate 15, and an insulating shell 18 is provided outside the wire brush box 16. The liquid supply pipe 4 passes through the insulating shell 18 and is connected to the wire brush box 16. A liquid return groove 6 is provided on the lower end surface of the wire drawing top plate 15, and the liquid return groove 6 is placed below the wire brush box 16. A reflux pipe 19 is provided at the bottom of the liquid return groove 6.

[0023] A wire drawing reinforcement plate 20 is disposed at the lower end of the wire drawing top plate 15 , and the wire drawing reinforcement plate 20 is fixedly disposed on the support plate 14 .

[0024] like Figure 5 As shown, the brush boxes 16 are arranged in a plurality, and a recovery pipe 21 is arranged on the brush box 16 farthest from the liquid inlet of the liquid supply pipe 4 . The recovery pipe 21 and the reflux pipe 19 are connected to the liquid return pipe 5 through a three-way valve 22 .

[0025] A wire drawing sliding plate 23 is also provided at the lower end of the support plate 14 .

[0026] The working process of the present invention is: adding the spinning solution into the liquid supply box → starting the liquid supply servo motor to drive the liquid supply metering pump → the spinning solution passes through the metering pump through the thickened transparent silicone tube → enters the brush box → the left and right sides of the brush box are connected in series with the thickened silicone transparent hose by the pagoda joint → the solution in the brush box is evenly applied to the linear electrode wire through the arc notch on the baffle plate of the brush box through the reciprocating motion of the module sliding frame → the excess solution overflowing from the arc notch on the baffle plate of the brush box flows into the return liquid tank with an inclined bottom surface through the overflow hole on the wire drawing top plate → the return liquid pipe of the brush box on the far right merges with the solution refluxed in the return liquid tank through a three-way joint and then flows back into the liquid supply box.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A liquid supply and return system for an electrospinning machine, comprising a liquid supply box (1), characterized in that: The gear pump liquid supply device also includes a motor (2) provided in the gear pump liquid supply device, the motor (2) is connected to a metering pump (3), a liquid supply pipe (4) and a liquid return pipe (5) are provided on the metering pump (3), the liquid supply pipe (4) is connected to the spinning device, the liquid return pipe (5) is connected to the liquid supply box (1), and the spinning device is also provided with a liquid return tank (6), which is connected to the liquid supply box (1) via the liquid return pipe; The spinning device comprises a support plate (14) and a wire drawing top plate (15) located at the upper end of the support plate (14); a wire brush box (16) is provided on the wire drawing top plate (15); and an insulating shell (18) is provided outside the wire brush box (16); The liquid supply pipe (4) passes through the insulating shell (18) and is connected to the brush box (16); a liquid return groove (6) is provided on the lower end surface of the wire drawing top plate (15); the liquid return groove (6) is placed below the brush box (16); and a reflux pipe (19) is provided at the bottom end of the liquid return groove (6); The brush boxes (16) are arranged in a plurality, and adjacent brush boxes (16) are connected in series with the liquid supply pipe (4) via pagoda joints. A recovery pipe (21) is provided on the brush box (16) farthest from the liquid inlet of the liquid supply pipe (4), and the recovery pipe (21) and the return pipe (19) are connected to the return pipe (5) via a three-way valve (22); The support plate (14) is also provided with a wire drawing sliding plate (23) at the lower end, and the solution inside is evenly applied to the linear electrode wire through the arc notch on the baffle plate on the wire brush box (16); Excess solution overflowing from the arc notch on the baffle plate on the brush box (16) flows into the return liquid groove (6) with an inclined bottom surface through the overflow hole on the wire drawing top plate (15). The return liquid pipe of the brush box and the solution returning from the return liquid groove are combined through a three-way joint and then returned to the liquid supply tank to realize circulating liquid supply. The large-flow circulating liquid supply avoids the complexity of liquid supply and can also play a role in assisting the stirring of the solution, effectively preventing the solution from settling.

2. The liquid supply and return system of the electrospinning machine according to claim 1, characterized in that: The gear pump liquid supply device comprises a liquid supply side plate (8) and a liquid supply end plate (9), a liquid supply cover plate (10) is provided on the top of the gear pump liquid supply device, and a liquid supply bearing plate (11) and a motor mounting plate (12) are also provided inside the gear pump liquid supply device, the motor (2) is arranged between the motor mounting plate (12) and the liquid supply end plate (9), and the metering pump (3) is located between the liquid supply bearing plate (11) and the liquid supply end plate (9).

3. The liquid supply and return system of the electrospinning machine according to claim 2, characterized in that: The motor (2) is connected to the metering pump (3) via a transmission shaft, and the liquid supply box (1) is placed on the liquid supply cover plate (10).

4. The liquid supply and return system for an electrospinning machine according to any one of claims 1 to 3, characterized in that: A wire drawing reinforcement plate (20) is provided at the lower end of the wire drawing top plate (15), and the wire drawing reinforcement plate (20) is fixedly arranged on the support plate (14).

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