Electrostatic spinning film breakage monitoring and shutdown protection interlocking control device

Abstract

The utility model relates to the field of electrostatic spinning film laminating processes, in particular to an electrostatic spinning film breakage monitoring and shutdown protection interlocking control device which comprises a film laminating box, a back plate is fixedly connected to the inner wall of the film laminating box, and a spinning solution supply system is fixedly connected to the outer surface of the back plate. A high-voltage power supply system is fixedly connected to the outer surface of the back plate, transmission rollers are arranged on the left side and the right side of the film covering box, and spinning base materials are in transmission connection to the outer circumferential surfaces of the transmission rollers. According to the utility model, the tension detection sensor is arranged, so that the coiled material tension of the transmission roller and the torque feedback signal of the winding drum can be detected in real time and are interlocked with the opening and closing of the high-voltage power supply system and the opening and closing of the spinning solution supply system; the effect that the high-voltage power supply system and the spinning solution supply system can be automatically closed when the spinning base material is broken is achieved, and the problem that fire disasters are easily caused under the action of a high-voltage electric field when the spinning base material is broken is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrostatic spinning coating technology, in particular to an electrostatic spinning coating fracture monitoring and shutdown protection interlocking control device. Background Art

[0002] Electrospinning coating technology is an important means of preparing nanofiber composite materials. Electrospinning coating technology is a preparation process that forms a coating composite material by forming a Taylor cone and a jet stream from a polymer solution or melt under the action of high-voltage static electricity, and then evaporating or solidifying the solvent, and finally depositing or bonding on the surface of the receiving substrate. Since the electrospinning process can prepare fibers with diameters ranging from tens to hundreds of nanometers, the products have high porosity and large specific surface area, diversified components, and uniform diameter distribution. They have high application value in the filtration industry as well as environmental engineering, biomedicine, textiles and other fields.

[0003] Since the high voltage electric field applied to form the Taylor cone during the electrospinning coating process is as high as 1kV-50kV, when electrostatic discharge occurs near the spinning nozzle during the spinning production process, electric sparks will be formed near the spinning nozzle. For the bottom-up production process with vertical distribution of spinning nozzles, such as the coating base material, due to the defects of the base material itself, external damage and other reasons, the coating base material is very likely to break during the tension tensioning and conveying process of the transmission roller. The broken base material falls on the spinning platform or the surface of the high-voltage electrospinning nozzle under the action of its own gravity, and slides on the spinning platform or the surface of the high-voltage electrospinning nozzle under the conveying of the transmission roller. At this time, the electric sparks generated by the high-voltage electric field discharge of the spinning nozzle are very likely to cause the coating base material (such as wood pulp paper, PET skeleton cloth, melt-blown cloth and other organic materials) to burn. Considering the limited spinning space and the wide coverage area of ​​the base material during the production process, the combustion caused by the breakage of the coated base material under the action of the high-voltage electric field often has the characteristics of fast combustion speed, high concentration of harmful gas released during combustion, and great difficulty in controlling and extinguishing the fire, which poses a great safety hazard and risk to on-site production.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In view of the above background technology, the prior art has the shortcomings and defects that the coated base material is very likely to break during the tensioning and conveying process of the transmission roller due to defects in the base material itself, external damage, etc., thereby forming electric sparks and causing fire problems.

[0006] The utility model discloses an electrostatic spinning coating rupture monitoring and shutdown protection interlock control device, comprising a coating box, the inner wall of the coating box is fixedly connected to a back plate, one side surface of the back plate is fixedly connected to a spinning liquid supply system, the surface of the back plate on the same side as the spinning liquid supply system is fixedly connected to a high-voltage power supply system, the left and right sides of the coating box are provided with transmission rollers, the outer circumferential surface of the transmission roller is drivingly connected to a spinning substrate, the right side of the coating box is provided with a baffle, the front and back sides of the coating box are fixedly connected to fixing rings, the inner wall of each fixing ring is fixedly sleeved with a positioning cylinder, a threaded rod is rotatably inserted into the interior of the positioning cylinder, the outer circumferential surface of the threaded rod is threadedly connected to a threaded tube, and the outer circumferential surface of the threaded tube is slidably inserted into the interior of the positioning cylinder.

[0007] By adopting the above scheme, when the spinning substrate breaks due to its own defects, the electric sparks generated by the high-voltage electric field discharge of the spinning nozzle can easily cause the coating base material to burn. The real-time feedback signals of the coil tension and drum torque are interlocked with the opening and closing of the high-voltage power supply system and the opening and closing of the spinning liquid supply system through the tension detection sensor, so that the high-voltage power supply system and the spinning liquid supply system can be automatically shut down when the spinning substrate breaks.

[0008] Optionally, a tension detection sensor is fixedly connected to the outer circumferential surface of the transmission roller, and the tension detection sensor is located on both sides of the outer circumferential surface of the transmission roller.

[0009] By adopting the above scheme, the tension detection sensor interlocks the real-time feedback signals of the coil tension and the drum torque with the opening and closing of the high-voltage power supply system and the spinning liquid supply system, enabling the device to control the high-voltage power supply system and the spinning liquid supply system according to the tension of the spinning substrate and the drum torque.

[0010] Furthermore, two mounting rods are fixedly plugged into the interior of the baffle, and the outer circumferential surface of each mounting rod is slidably plugged into the interior of the film coating box.

[0011] By adopting the above solution, the auxiliary baffle is installed and disassembled, which provides convenience for the installation and disassembly of the baffle.

[0012] Furthermore, a handle is fixedly sleeved on the outer circumference of the threaded rod, and the outer circumference of the handle is provided with anti-slip grooves arranged at equal distances.

[0013] By adopting the above solution, it is convenient for workers to control the threaded rod through the handle, and the friction of the handle is increased, providing convenience for the workers.

[0014] Furthermore, the outer surface of the positioning cylinder is fixedly connected to a limiting ring, the outer circumferential surface of the threaded rod is rotatably plugged into the inner wall of the limiting ring, and the outer diameter of the contact portion between the threaded rod and the limiting ring is smaller than the inner diameter of the threaded rod.

[0015] By adopting the above solution, the threaded rod is restricted, the sliding and deviation of the threaded rod is avoided, and the stability of the movement of the threaded rod is increased.

[0016] Furthermore, two limiting plates are fixedly connected to the outer circumferential surface of the threaded tube, and the outer circumferential surface of each limiting plate is slidably connected to the positioning cylinder via a hollow groove provided inside the positioning cylinder.

[0017] By adopting the above solution, the threaded pipe is restricted to prevent the threaded pipe from rotating along with the threaded rod, so that the threaded pipe is always kept moving laterally.

[0018] Furthermore, a positioning groove is provided inside the baffle, and a positioning plate is fixedly connected to the outer surface of the threaded tube, and the outer surface of the positioning plate is slidably plugged with the baffle through the positioning groove.

[0019] By adopting the above solution, the baffle is positioned through the positioning plate and the positioning groove, which makes it convenient to disassemble the baffle and further facilitate maintenance and repair of the inside of the device.

[0020] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0021] 1. The utility model sets a tension detection sensor to enable the coil tension and drum torque feedback signal of the transmission roller to be detected in real time, and interlocks with the opening and closing of the high-voltage power supply system and the opening and closing of the spinning liquid supply system, so as to achieve the effect that the high-voltage power supply system and the spinning liquid supply system can be automatically closed when the spinning substrate breaks, and solves the problem that the breaking of the spinning substrate is easy to cause a fire under the action of the high-voltage electric field.

[0022] 2. The utility model has a simple structure and is easy to use. It can automatically shut down the high-voltage power supply system and the spinning liquid supply system when the spinning substrate breaks, thereby preventing the spinning substrate from spontaneously combusting and causing a fire. It is convenient for the disassembly and installation of the device, and for the staff to perform maintenance and repairs inside the device, providing convenience for the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0026] Figure 3 This is a schematic diagram of the back panel structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the positioning tube structure of the utility model.

[0028] In the figure: 1. Laminating box; 2. Back plate; 3. Spinning liquid supply system; 4. High-voltage power supply system; 5. Transmission roller; 6. Tension detection sensor; 7. Spinning substrate; 8. Baffle; 9. Mounting rod; 10. Positioning groove; 11. Fixing ring; 12. Positioning cylinder; 13. Threaded rod; 14. Handle; 15. Limiting ring; 16. Threaded tube; 17. Limiting plate; 18. Positioning plate. DETAILED DESCRIPTION

[0029] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0030] See also Figure 1 - Figure 4 The utility model discloses an electrostatic spinning coating fracture monitoring and shutdown protection interlock control device, comprising a coating box 1, the inner wall of the coating box 1 is fixedly connected with a back plate 2, one side surface of the back plate 2 is fixedly connected with a spinning liquid supply system 3, the surface on the same side of the back plate 2 and the spinning liquid supply system 3 is fixedly connected with a high-voltage power supply system 4, the left and right sides of the coating box 1 are provided with transmission rollers 5, the outer circumferential surface of the transmission roller 5 is transmission-connected with a spinning substrate 7, the outer circumferential surface of the transmission roller 5 is fixedly connected with a tension detection sensor 6, and the tension detection sensor 6 is located on both sides of the outer circumferential surface of the transmission roller 5.

[0031] According to the tension control principle of the conveying system of the transmission roller 5, the web tension (F), the roll torque (T), and the roll diameter (D) have the following relationship: F=2T / D. When the coated base material breaks unexpectedly during the production process, the web tension (F) will drop by at least 50%. At this time, the tension detection sensor 6 of the tension control system will monitor the sudden change of the web tension, and the roll torque will also undergo a 50% sudden change accordingly. The sudden change signal of the web tension and the sudden change signal of the roll torque will be transmitted to the spinning liquid supply system 3 and the high-voltage power supply system 4.

[0032] In this embodiment, the tension detection sensor 6 interlocks the real-time feedback signals of the coil tension and the drum torque with the opening and closing of the high-voltage power supply system 4 and the opening and closing of the spinning liquid supply system 3. The interlocking logic is: when the tension detection sensor 6 detects that any value of the two feedback signals of the coil tension (F) and the drum torque (T) drops by more than 50% within any 3 seconds, the interlock is started, and the high-voltage power supply system 4 and the spinning liquid supply system 3 are turned off at the same time. In this way, when the coated base material breaks and falls on the spinning platform or the surface of the high-voltage electrostatic spinning nozzle, it is ensured that there is no high-voltage electrostatic field in the operating environment, eliminating the risk of electric sparks generated by high-voltage electrostatic discharge, and effectively saving production raw materials, avoiding secondary risks caused by leakage of spinning liquid, and solving the potential combustion risk problem caused by the breakage of the coated base material during the production process from the source.

[0033] A baffle 8 is provided on the right side of the coating box 1, and two mounting rods 9 are fixedly inserted inside the baffle 8. The outer circumference of each mounting rod 9 is slidably inserted into the interior of the coating box 1, so as to assist in the installation and disassembly of the baffle 8. A fixing ring 11 is fixedly connected to the front and back sides of the coating box 1, and a positioning cylinder 12 is fixedly sleeved on the inner wall of each fixing ring 11. A threaded rod 13 is rotatably inserted inside the positioning cylinder 12, and a limiting ring 15 is fixedly connected to the outer surface of the positioning cylinder 12. The outer circumference of the threaded rod 13 is rotatably inserted into the inner wall of the limiting ring 15. The outer diameter of the contact part between the threaded rod 13 and the limiting ring 15 is smaller than the inner diameter of the threaded rod 13, so as to limit the threaded rod 13 and prevent it from sliding and deflecting.

[0034] In a preferred embodiment, a handle 14 is fixedly sleeved on the outer circumference of the threaded rod 13, and anti-slip grooves arranged equidistantly are provided on the outer circumference of the handle 14, so that workers can control the threaded rod 13 through the handle 14 conveniently. A threaded tube 16 is threadedly connected to the outer circumference of the threaded rod 13, and the outer circumference of the threaded tube 16 is slidably plugged into the interior of the positioning tube 12. Two limit plates 17 are fixedly connected to the outer circumference of the threaded tube 16, and the outer circumference of each limit plate 17 is slidably connected to the positioning tube 12 through an empty groove provided inside the positioning tube 12, so as to limit the threaded tube 16 and cause the threaded tube 16 to always maintain lateral movement. A positioning groove 10 is provided inside the baffle 8, and a positioning plate 18 is fixedly connected to the outer surface of the threaded tube 16, and the outer surface of the positioning plate 18 is slidably plugged into the baffle 8 through the positioning groove 10, and the baffle 8 is positioned by the positioning plate 18 and the positioning groove 10, so as to facilitate the disassembly and installation of the baffle 8.

[0035] In this embodiment, the rotatable threaded rod 13 drives the threaded tube 16 to move, and the threaded tube 16 drives the positioning plate 18 to move, so that the baffle 8 is positioned through the positioning groove 10 .

[0036] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An electrospinning film breakage monitoring device, comprising a film coating box (1), characterized in that: The inner wall of the coating box (1) is fixedly connected to a back plate (2), one side surface of the back plate (2) is fixedly connected to a spinning liquid supply system (3), the surface of the back plate (2) on the same side as the spinning liquid supply system (3) is fixedly connected to a high-voltage power supply system (4), the left and right sides of the coating box (1) are provided with transmission rollers (5), the outer circumferential surface of the transmission roller (5) is drivingly connected to a spinning substrate (7), the right side of the coating box (1) is provided with a baffle (8), the front and back sides of the coating box (1) are fixedly connected to fixing rings (11), the inner wall of each fixing ring (11) is fixedly sleeved with a positioning cylinder (12), the interior of the positioning cylinder (12) is rotatably plugged with a threaded rod (13), the outer circumferential surface of the threaded rod (13) is threadedly connected to a threaded tube (16), and the outer circumferential surface of the threaded tube (16) is slidably plugged into the interior of the positioning cylinder (12).

2. The electrospinning film fracture monitoring device according to claim 1, characterized in that: The outer circumferential surface of the transmission roller (5) is fixedly connected with a tension detection sensor (6), and the tension detection sensor (6) is located on both sides of the outer circumferential surface of the transmission roller (5).

3. The electrospinning film fracture monitoring device according to claim 1, characterized in that: Two mounting rods (9) are fixedly plugged into the interior of the baffle (8), and the outer circumferential surface of each mounting rod (9) is slidably plugged into the interior of the film laminating box (1).

4. The electrospinning film fracture monitoring device according to claim 1, characterized in that: A handle (14) is fixedly sleeved on the outer circumferential surface of the threaded rod (13), and the outer circumferential surface of the handle (14) is provided with anti-slip grooves arranged at equal distances.

5. The electrospinning film fracture monitoring device according to claim 1, characterized in that: The outer surface of the positioning cylinder (12) is fixedly connected to a limiting ring (15), the outer circumferential surface of the threaded rod (13) is rotatably plugged into the inner wall of the limiting ring (15), and the outer diameter of the contact portion between the threaded rod (13) and the limiting ring (15) is smaller than the inner diameter of the threaded rod (13).

6. The electrospinning film fracture monitoring device according to claim 1, characterized in that: Two limiting plates (17) are fixedly connected to the outer circumferential surface of the threaded tube (16), and the outer circumferential surface of each limiting plate (17) is slidably connected to the positioning cylinder (12) via a hollow groove provided inside the positioning cylinder (12).

7. The electrospinning film fracture monitoring device according to claim 1, characterized in that: A positioning groove (10) is provided inside the baffle (8), a positioning plate (18) is fixedly connected to the outer surface of the threaded tube (16), and the outer surface of the positioning plate (18) is slidably plugged into the baffle (8) via the positioning groove (10).

8. An electrospinning shutdown protection interlock control device, characterized in that: An electrospinning coating fracture monitoring device comprising the electrospinning coating fracture monitoring device as described in any one of claims 1 to 7.

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