CN213772448U - Heat treatment mechanism for melt-blown web fibers - Google Patents

Abstract

The utility model provides a melt-blown web formation fibre heat treatment mechanism, its melt-blown spinning die head department is to the spun in-process on the netting curtain of its below, through on water vapor atomization equipment with the post-spray of water atomization to the fibre that melt spinning formed, atomizing steam carries out the heat treatment of local microenvironment to the fibre, makes the fibre by crystalline state to glass state transition, changes fibrous structure, control fibre crystallization velocity ratio, after through thermodynamics processing, more traditional preparation technology, the utility model discloses the fibre of preparation is more exquisite, feels more soft, and is more unanimous than the fibre, under the unanimous prerequisite of filter effect, its resistance descends 20% to 30%, and it adds the electric effect better, and it is higher with electric back adsorption efficiency, and the filter effect is stronger. In addition, because various parameters of the atomizing device are controllable, the crystallization speed ratio of the fiber can be controlled, thereby controlling the thermodynamic change of the fiber, controlling the changes of the clean state, the glass state and the high elastic state of the fiber, and further controlling the parameter effects of the fiber.

Description

Heat treatment mechanism for melt-blown web fibers

[ technical field ] A method for producing a semiconductor device

The utility model relates to the technical field of air filtration material production, in particular to a heat treatment mechanism for melt-blown web fibers.

[ background of the invention ]

The melt-blown fabric is mostly used in the fields of air, liquid filtering materials, isolating materials, absorbing materials, mask materials, heat-insulating materials, oil-absorbing materials, wiping fabrics and the like, has more gaps, fluffy structure and good wrinkle resistance, and has good filterability, shielding property, heat insulation property and oil absorption property because the number and the surface area of fibers per unit area are increased by the superfine fibers with unique capillary structures.

The fiber crystal structure of the melt-blown fabric determines the filtering efficiency, resistance and hand feeling of the melt-blown fabric, and the melt-blown fabric needs to be subjected to electrification treatment when being used for a mask filtering material, so that the melt-blown fabric is provided with an electrostatic layer to enhance the adsorption effect of the melt-blown fabric, and the electrification effect is also a large index of the melt-blown fabric.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provide a heat treatment mechanism for melt-blown web fibers.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a heat treatment mechanism for melt-blown web fibers comprises a melt-blown extrusion die head, a web receiving device and a water vapor atomizing device; melt and spout the top that extrusion die placed in net formation receiving arrangement, and be connected with screw extrusion device, net formation receiving arrangement is including frame, cylinder and the net forming curtain that sets up on the cylinder, steam atomization plant can be used to produce atomizing steam and send atomizing steam to melt and spout extrusion die and net forming curtain between, steam atomization plant is including water storage device and atomizing device to and the controlling means who controls atomizing device's atomizing is long, atomizing spray velocity and atomizing spray angle.

In a further improvement, the atomizing device comprises a plurality of ultrasonic atomizing nozzles.

In a further development, the spray angle of each ultrasonic atomizing nozzle is different.

In a further development, a low-pressure air injection device is provided on one side of the ultrasonic atomizing nozzle, which low-pressure air injection device injects low-pressure gas/air at the nozzle orifice of the ultrasonic atomizing nozzle.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses on the melt-blown spinning die head department spouts the fibre that melt-blown spinning formed to its below's one-tenth net curtain on, atomizing steam carries out the heat treatment of local microenvironment to the fibre through steam atomization plant after with water atomization, makes the fibre change to the glass state by crystalline state, changes fibrous structure, and control fibre crystallization velocity ratio, after the processing of thermodynamics, more traditional preparation technology, the utility model discloses the fibre of preparation is more fine and smooth, feels more soft, and is more unanimous than the fibre, strain under the unanimous prerequisite, its resistance descends 20% to 30%, and it adds the electric effect better, and it is higher adding electric back adsorption performance, and it is more strong to strain the effect. In addition, because various parameters of the atomizing device are controllable, the crystallization speed ratio of the fiber can be controlled when the fiber is subjected to local microenvironment heat treatment, so that the thermodynamic change of the fiber is controlled, the changes of the clean state, the glass state and the high elastic state of the fiber are controlled, and the parameter effects of the fiber are further controlled.

The invention will be described in further detail with reference to the following detailed description and accompanying drawings:

[ description of the drawings ]

FIG. 1 is a schematic perspective view of a meltblown web fiber heat treatment mechanism;

FIG. 2 is a schematic illustration of fiber atomization.

[ detailed description ] embodiments

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.

The orientation shown in the drawings is not to be considered as limiting the scope of the invention, but merely as a reference to the preferred embodiments, changes in position or addition of numbers or structural simplifications may be made to the product parts shown in the drawings.

The relation of "connected" between the components shown in the drawings and described in the specification can be understood as fixedly connected or detachably connected or integrally connected; the connecting elements can be directly connected or connected through an intermediate medium, and persons skilled in the art can understand the connecting relation according to specific conditions, and can use the connecting elements in a screwed connection or riveting connection or welding connection or clamping connection or embedding connection mode to replace different embodiments in a proper mode.

The terms of orientation such as up, down, left, right, top, bottom, and the like in the description and the orientation shown in the drawings, may be used for direct contact or contact with each other through another feature therebetween; above may be directly above and obliquely above, or it simply means above the other; other orientations may be understood by analogy.

The material for manufacturing the solid-shaped component shown in the specification and the drawings can be a metal material or a non-metal material or other composite materials; the machining processes used for components having solid shapes can be stamping, forging, casting, wire cutting, laser cutting, casting, injection molding, digital milling, three-dimensional printing, machining, and the like; one skilled in the art can select the materials and the manufacturing process adaptively or in combination according to different processing conditions, cost and precision.

The utility model provides a heat treatment mechanism for melt-blown web fibers, which is shown in figures 1 and 2 and comprises a melt-blown extrusion die head 10, a web receiving device 20 and a water vapor atomization device 30; melt and spout extrusion die 10 and arrange the top of forming net receiving arrangement 20 in, and be connected with screw extrusion equipment 40, forming net receiving arrangement 20 is including frame, cylinder and the formation net curtain that sets up on the cylinder, steam atomization plant 30 can be used to produce atomizing steam and send atomizing steam to melt and spout extrusion die 10 and form between the net curtain, steam atomization plant 30 is including water storage device and atomizing device to and the controlling means who controls atomizing device's atomizing duration, atomizing injection velocity and atomizing injection angle.

The utility model discloses on the melt-blown spinning die head 10 locates to the net curtain of its below from melt-blown spinning in-process, spout the fibre that melt-blown spinning formed behind with water atomization through steam atomization equipment 30, atomizing steam carries out the heat treatment of local microenvironment to the fibre, makes the fibre change to the glass state by crystalline state, changes the fibrous structure, and control fibre crystallization velocity ratio is after the processing of thermodynamics, more traditional preparation technology, the utility model discloses the fibre of preparation is more fine and smooth, feels more soft, and is more unanimous than the fibre, under the unanimous prerequisite of filter effect, its resistance descends 20% to 30%, and it adds the electric effect better, and it is higher adding electric back adsorption performance, and the filter effect is stronger. In addition, because various parameters of the atomizing device are controllable, the crystallization speed ratio of the fiber can be controlled when the fiber is subjected to local microenvironment heat treatment, so that the thermodynamic change of the fiber is controlled, the changes of the clean state, the glass state and the high elastic state of the fiber are controlled, and the parameter effects of the fiber are further controlled.

In an embodiment, the atomizing device comprises a plurality of ultrasonic atomizing nozzles, and the control device can control the number of the working ultrasonic atomizing nozzles, namely, the breadth of the water vapor atomizing spray can be controlled.

In the embodiment, the spraying angle of each ultrasonic atomizing nozzle is different, and the control device can control the working ultrasonic atomizing nozzle, namely the spraying angle of the water vapor atomization.

In the embodiment, a low-pressure air injection device is arranged on one side of the ultrasonic atomization nozzle, low-pressure gas/air is injected to the nozzle hole of the ultrasonic atomization nozzle by the low-pressure air injection device, and the injected water vapor is combined with the low-pressure air/air to generate soft small spray droplets, so that the water vapor atomization injection speed is controlled.

Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the present disclosure, but rather to limit the scope thereof by the appended claims.

Claims (4)

1. A heat treatment mechanism for melt-blown web fibers is characterized by comprising a melt-blown extrusion die head, a web receiving device and a water vapor atomizing device; melt and spout the top that extrusion die placed in net formation receiving arrangement, and be connected with screw extrusion device, net formation receiving arrangement is including frame, cylinder and the net forming curtain that sets up on the cylinder, steam atomization plant can be used to produce atomizing steam and send atomizing steam to melt and spout extrusion die and net forming curtain between, steam atomization plant is including water storage device and atomizing device to and the controlling means who controls atomizing device's atomizing is long, atomizing spray velocity and atomizing spray angle.

2. A mechanism according to claim 1, wherein said atomizing means comprises a plurality of ultrasonic atomizing nozzles.

3. A mechanism according to claim 2, wherein the spray angle of each ultrasonic atomizing nozzle is different.

4. A meltblown web fibers heat treatment apparatus according to claim 2, characterised in that a low pressure air jet means is provided at one side of the ultrasonic atomizing nozzle, said low pressure air jet means injecting low pressure gas/air at the nozzle orifice of the ultrasonic atomizing nozzle.

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