Coaxial electrostatic spinning nozzle convenient to clean

Abstract

The utility model relates to the field of electrostatic spinning devices, in particular to a coaxial electrostatic spinning spray head convenient to clean, a first liquid inlet connector is fixedly connected with an outer nozzle, a second liquid inlet connector penetrates through the outer nozzle and is fixedly connected with an inner nozzle, a telescopic rod is fixedly connected to the outer side of the outer nozzle, and the telescopic rod is fixedly connected with an inner nozzle. The output end of the telescopic rod penetrates through the outer nozzle and the inner nozzle in a sliding mode and is fixedly connected with a sealing gasket, the sealing gasket is fixedly connected with a cleaning rod, and the air pump is connected with the outer nozzle through an air blowing pipe. The telescopic rod is arranged, the output end of the telescopic rod is fixedly connected with the sealing gasket, the cleaning rod is connected to the front end of the sealing gasket, the telescopic rod can drive the cleaning rod to move to clean the inner nozzle, and the air pump is arranged, so that the space between the outer nozzle and the inner nozzle can be pneumatically cleaned; according to the coaxial electrostatic sprayer, the inner nozzle and the outer nozzle can be cleaned without being disassembled.

Description

Technical Field

[0001] The utility model relates to the field of electrostatic spinning devices, in particular to a coaxial electrostatic spinning nozzle which is easy to clean. Background Art

[0002] Electrospinning is a special form of electrostatic atomization of polymer fluids. At this time, the atomized substances are not tiny droplets, but polymer micro-jets, which can run for a considerable distance and finally solidify into fibers. The preparation of nanofiber materials by electrospinning technology has been one of the most important academic and technical activities in the field of materials science and technology in the world in the past decade. Coaxial electrospinning is a spinning technology modified on the basis of electrospinning. Its basic principle is to inject core and shell solutions into two coaxial capillaries with different inner diameters respectively. The two solutions converge at the end of the nozzle and then solidify into composite nanofibers under the action of electric field force. Coaxial electrospinning solves the defect that the spinning solution must be a uniform system during spinning. The prepared coaxial fibers are superior to fibers obtained by other methods in terms of uniformity and continuity. Hollow fibers and nanocomposite fibers can be prepared by coaxial electrospinning. These fibers have broad application prospects in biomedicine, energy batteries, catalysts, sensors and other fields.

[0003] The coaxial electrospinning nozzle is a key component of the coaxial electrospinning device. The coaxial electrospinning nozzle is usually composed of two inner and outer nozzles. The nozzle outputs the spinning solution. Since the nozzle diameter is small and the spinning solution has a certain viscosity, the inner nozzle of the coaxial electrospinning nozzle is easily blocked. Some nozzles are set to a detachable structure for easy cleaning, but disassembly and cleaning are inconvenient and will affect work efficiency. Therefore, it is necessary to develop a coaxial electrospinning nozzle that can be cleaned without disassembly and improves cleaning efficiency. Utility Model Content

[0004] In view of the above technical problems, the utility model provides a coaxial electrospinning nozzle which can be cleaned without disassembly and has improved cleaning efficiency, so as to solve the problem that the existing coaxial electrospinning nozzle is easy to be blocked and inconvenient to clean.

[0005] In order to solve the above technical problems, the utility model describes a coaxial electrospinning nozzle that is easy to clean, comprising an outer nozzle and an inner nozzle, the inner nozzle being fixedly connected to the inside of the outer nozzle, and also comprising a first liquid inlet joint, a second liquid inlet joint, and an air pump, the first liquid inlet joint being fixedly connected to the outer nozzle, the second liquid inlet joint passing through the outer nozzle and being fixedly connected to the inner nozzle, a telescopic rod being fixedly connected to the outside of the outer nozzle, the output end of the telescopic rod slidingly passing through the outer nozzle and the inner nozzle and being fixedly connected to a sealing gasket, a cleaning rod being fixedly connected to the sealing gasket, the air pump being connected to the outer nozzle via an air blowing pipe, a one-way valve being connected to the air blowing pipe, and a valve being connected to the first liquid inlet joint.

[0006] Furthermore, a connecting frame is fixedly connected to the outer side of the tail end of the outer nozzle, and the telescopic rod is fixedly connected to the connecting frame.

[0007] Furthermore, the telescopic rod is a pneumatic telescopic rod.

[0008] Furthermore, the air pump output end is connected to the pneumatic telescopic rod input end through an air intake pipe.

[0009] Furthermore, the output end of the telescopic rod is non-sealedly connected to the outer nozzle and the inner nozzle.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] The utility model fixes a telescopic rod to the outside of the tail end of the outer nozzle, and the output end of the telescopic rod slides through the outer nozzle and the inner nozzle and is fixedly connected with a sealing gasket, and a cleaning rod is connected to the front end of the sealing gasket, and the cleaning rod can be driven by the telescopic rod to move to clean the inner nozzle, and an air pump is provided and connected to the outer nozzle by an air blowing pipe, so that pneumatic cleaning can be performed between the outer nozzle and the inner nozzle. This coaxial electrostatic nozzle can clean the inner nozzle and the outer nozzle without disassembly, and can improve the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] In the figure: 1, outer nozzle, 2, inner nozzle, 3, first liquid inlet joint, 4, second liquid inlet joint, 5, telescopic rod, 6, connecting frame, 7, sealing gasket, 8, cleaning rod, 9, air pump, 10, air blowing pipe, 11, one-way valve, 12, valve, 13, air inlet pipe. DETAILED DESCRIPTION

[0014] The utility model will be further described below in conjunction with the accompanying drawings.

[0015] like Figure 1A coaxial electrospinning nozzle that is easy to clean is shown, comprising an outer nozzle 1 and an inner nozzle 2, wherein the inner nozzle 2 is fixedly connected to the inner part of the outer nozzle 1, and further comprising a first liquid inlet joint 3, a second liquid inlet joint 4, and an air pump 9. The first liquid inlet joint 3 is fixedly connected to the outer nozzle 1, and the second liquid inlet joint 4 penetrates the outer nozzle 1 and is fixedly connected to the inner nozzle 2. During use, the other ends of the first liquid inlet joint 3 and the second liquid inlet joint 4 are respectively connected to the output end of the injection pump through pipelines, and a telescopic rod 5 is fixedly connected to the outer tail end of the outer nozzle 1, and the output end of the telescopic rod 5 slides through the outer nozzle 1 and the inner nozzle 2 and is fixedly connected to a sealing gasket 7, and the sealing gasket 7 is sealed from the inner wall of the inner nozzle 2. A cleaning rod 8 is fixedly connected to the front end of the sealing gasket 7, and the diameter of the cleaning rod 8 is smaller than the inner diameter of the inner nozzle 2. The output end of the air pump 9 is connected to the outer nozzle 1 through an air blowing pipe 10, and a one-way valve 11 is connected to the air blowing pipe 10, and the output end of the one-way valve 11 faces the side of the outer nozzle 1. A valve 12 is connected to the first liquid inlet joint 3, and the valve 12 is a ball valve.

[0016] In order to facilitate the installation and fixation of the telescopic rod 5, a connecting frame 6 is fixedly connected to the outer side of the tail end of the outer nozzle 1 by bolts, and the telescopic rod 5 is fixedly connected to the connecting frame 6 by bolts.

[0017] In order to facilitate the operation of the telescopic rod 5 driven by the air pump 9, the telescopic rod 5 is a pneumatic telescopic rod, and the output end of the air pump 9 is connected to the input end of the pneumatic telescopic rod through the air inlet pipe 13.

[0018] In order to facilitate the telescopic rod 5 to move in the opposite direction with the sealing pad 7 and the cleaning rod 8 after cleaning, a gap is provided between the output end of the telescopic rod 5 and the outer nozzle 1 and the inner nozzle 2 .

[0019] It should be noted that, in combination with actual use requirements, the telescopic rod 5 can also be an electric telescopic rod or a hydraulic telescopic rod. In this embodiment, a controller is provided for use with the telescopic rod 5, and the controller is used to control the forward and reverse operation of the telescopic rod 5, which is a prior art. At the same time, the pneumatic telescopic rod and the air pump 9 are both existing equipment, and their specific structures and connection relationships are not described in detail in this embodiment.

[0020] The working process of this embodiment is as follows:

[0021] After the coaxial electrospinning nozzle is working, the injection pump operation is stopped, the valve 12 is closed to prevent gas from flowing out during cleaning, and cleaning is started. During cleaning, the air pump 9 is started to run, and the air pump 9 drives the pneumatic telescopic rod to run. The pneumatic telescopic rod drives the sealing pad 7 and the cleaning rod 8 to move forward. The cleaning rod 8 can clean the blockage inside the inner nozzle 2, push out the end of the inner nozzle 2, and control the pneumatic telescopic rod to retract. At the same time, when the air pump 9 is running, the gas passes through the one-way valve 11 from the blowing pipe 10 to enter between the outer nozzle 1 and the inner nozzle 2 for blowing, so as to clean the debris therein. After the cleaning is completed, the air pump 9 is closed.

Claims

1. A coaxial electrospinning nozzle that is easy to clean, comprising an outer nozzle (1) and an inner nozzle (2), wherein the inner nozzle (2) is fixedly connected to the inner part of the outer nozzle (1), characterized in that: It also comprises a first liquid inlet joint (3), a second liquid inlet joint (4), and an air pump (9); the first liquid inlet joint (3) is fixedly connected to the outer nozzle (1); the second liquid inlet joint (4) penetrates the outer nozzle (1) and is fixedly connected to the inner nozzle (2); a telescopic rod (5) is fixedly connected to the outer side of the outer nozzle (1); the output end of the telescopic rod (5) slides through the outer nozzle (1) and the inner nozzle (2) and is fixedly connected to a sealing gasket (7); a cleaning rod (8) is fixedly connected to the sealing gasket (7); the air pump (9) is connected to the outer nozzle (1) via an air blowing pipe (10); a one-way valve (11) is connected to the air blowing pipe (10); and a valve (12) is connected to the first liquid inlet joint (3).

2. The coaxial electrospinning nozzle that is easy to clean according to claim 1, characterized in that: A connecting frame (6) is fixedly connected to the outer side of the tail end of the outer nozzle (1), and the telescopic rod (5) is fixedly connected to the connecting frame (6).

3. The easy-to-clean coaxial electrospinning nozzle according to claim 1, characterized in that: The telescopic rod (5) is a pneumatic telescopic rod.

4. The easy-to-clean coaxial electrospinning nozzle according to claim 3, characterized in that: The output end of the air pump (9) is connected to the input end of the pneumatic telescopic rod via an air intake pipe (13).

5. The coaxial electrospinning nozzle that is easy to clean according to claim 1, characterized in that: There is a gap between the output end of the telescopic rod (5) and the outer nozzle (1) and the inner nozzle (2).

Images