A nonwoven meltblown stretching device

Abstract

This utility model discloses a nonwoven meltblown stretching device, including a stretching mechanism, a filtering mechanism, and a dustproof mechanism. The stretching mechanism includes a screw extruder, a meltblown tube connected and communicating with the screw extruder, a metering pump installed on the meltblown tube, a spinneret assembly sleeved on the outside of the output end of the meltblown tube, and two airflow channels installed on both sides of the spinneret assembly. In this utility model, during the spinning operation, the hot air entering the airflow channel is filtered when passing through the filter cloth. To ensure that the filter cloth is sufficiently clean and to control the speed at which the air passes through the filter cloth, the operator starts a separate motor. This motor then winds up the filter cloth, which is cleaned as it passes over the brush. When the filter cloth on the other motor is completely wound up, the other motor is started to achieve the reciprocating movement of the filter cloth, ensuring the filtration effect of the filter cloth and the airflow speed, and guaranteeing the spinning quality.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, specifically to a nonwoven fabric meltblown stretching device. Background Technology

[0002] Nonwoven fabric, also known as non-woven textile, is made from oriented or randomly arranged fibers through friction, cohesion, bonding, or a combination of these methods. The key characteristic is that it is "non-woven." Nonwoven fabric exists in the form of fibers within the fabric, while woven fabric exists in the form of yarns. This is a major characteristic that distinguishes nonwoven fabric from other fabrics; you cannot pull out individual threads from nonwoven fabric.

[0003] Application number CN202223494459.0 discloses a nonwoven meltblown drawing mechanism, including a drawing body, a drawing assembly, and an adjustment mechanism. This utility model's nonwoven meltblown drawing mechanism uses an airflow heating device, a filter seat, and a filter element in conjunction to filter the air inside the air duct, thereby preventing impurities in the air from contaminating the produced nonwoven fabric and improving the yield rate of nonwoven fabric production. A limiting rod is provided to improve the stability of the connection between the filter element and the filter seat. A fixing component and a fixing plate are used together to disassemble or fix the air duct, facilitating user operation. However, this application has a problem: after prolonged use, the filter element used for air filtration accumulates increasingly thick layers of dust, resulting in a decrease in the air velocity and volume passing through the filter element during later use, which affects the spinning quality. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A nonwoven meltblown stretching device includes a stretching mechanism, a filtering mechanism, and a dustproof mechanism. The stretching mechanism includes a screw extruder, a meltblown tube connected and communicating with the screw extruder, a metering pump installed on the meltblown tube, a spinneret assembly sleeved on the outside of the output end of the meltblown tube, two airflow channels installed on both sides of the spinneret assembly, and an air supply unit connected to the outer end of the airflow channels, with the two air supply units connected in series. The filtering mechanism includes two motors installed on the rear side of the airflow channels, a filter cloth that movably passes through the airflow channels and is connected between the two motors, and a brush attached to the inner side of the filter cloth, with the brush fixed to the outer wall of the airflow channels. The dustproof mechanism includes a diverter pipe connected and communicating with the airflow channels, a box body located at the bottom of the brush body, and multiple adhesive plates inserted into the box body.

[0007] By adopting the above technical solution, during the spinning process, the hot air entering the airflow channel is filtered when passing through the filter cloth. To ensure that the filter cloth is clean enough and the speed at which the air passes through the filter cloth, the operator will start a separate motor to wind up the filter cloth. The filter cloth is cleaned when it passes over the brush. Then, when the filter cloth on another motor is finished winding up, another motor is started to realize the reciprocating movement of the filter cloth, ensuring the filtration effect of the filter cloth and the airflow speed, and ensuring the spinning quality.

[0008] In a preferred embodiment, the present invention can be further configured such that: the diversion pipe is set in the shape of "[", the air inlet end of the diversion pipe is located between the spinneret assembly and the filter cloth, and the air outlet end of the diversion pipe is located at the top of the brush.

[0009] In a preferred embodiment, the present invention can be further configured as follows: multiple adhesive boards are arranged in a row with equal spacing, the lengths of the multiple adhesive boards are different, and they gradually increase from top to bottom.

[0010] In a preferred embodiment, the present invention can be further configured such that a filter is installed on the meltblown tube, the filter being located between the screw extruder and the metering pump.

[0011] In a preferred embodiment, the present invention can be further configured such that two pressure cylinders are movably embedded on both the front and rear sides of the airflow channel, and multiple pressure cylinders are respectively attached to both sides of the filter cloth.

[0012] In a preferred embodiment, the present invention can be further configured such that: an airflow nozzle is sleeved at the air outlet end of the diversion pipe, and the airflow nozzle is suspended above the brush.

[0013] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0014] 1. In this utility model, during the spinning process, the hot air entering the airflow channel is filtered when passing through the filter cloth. To ensure that the filter cloth is clean enough and the speed at which the air passes through the filter cloth, the operator will start a separate motor. This motor will then wind up the filter cloth, which is cleaned as it passes over the brush. When the filter cloth on another motor is finished being wound up, the other motor will be started to realize the reciprocating movement of the filter cloth, ensuring the filtration effect of the filter cloth and the airflow speed, and guaranteeing the spinning quality.

[0015] 2. In this utility model, a portion of the hot air flowing through the airflow channel will reach the top of the brush through the diversion pipe. Then, the airflow blown out by the diversion pipe guides the dust and impurities cleaned by the brush, causing these contaminants to enter the box. The contaminants are then stuck together by the adhesive plate, effectively preventing dust from being stirred up. Attached Figure Description

[0016] Figure 1This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the drawing mechanism of this utility model;

[0018] Figure 3 This is a perspective view showing the connection relationship between the airflow channel, air supply unit, filter mechanism, and dustproof mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram of the filtration mechanism of this utility model;

[0020] Figure 5 This is a schematic diagram of the dustproof mechanism of this utility model.

[0021] Figure label:

[0022] 100. Drawing mechanism; 110. Screw extruder; 120. Meltblown tube; 130. Metering pump; 140. Spinneret assembly; 150. Airflow channel; 160. Air supply unit;

[0023] 200. Filtration mechanism; 210. Motor; 220. Filter cloth; 230. Plate brush;

[0024] 300. Dustproof mechanism; 310. Diversion pipe; 320. Box body; 330. Adhesive board;

[0025] 400. Filter;

[0026] 500, Pressure cylinder;

[0027] 600. Airflow nozzle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0029] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0030] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a nonwoven meltblown stretching device.

[0031] Example 1:

[0032] Combination Figure 1-5As shown, the present invention provides a nonwoven meltblown stretching device, including a stretching mechanism 100, a filtering mechanism 200, and a dustproof mechanism 300. The stretching mechanism 100 includes a screw extruder 110, a meltblown tube 120 connected and communicating with the screw extruder 110, a metering pump 130 installed on the meltblown tube 120, a spinneret assembly 140 sleeved on the outside of the output end of the meltblown tube 120, two airflow channels 150 installed on both sides of the spinneret assembly 140, and an air supply unit 160 connected to the outer end of the airflow channel 150. The two air supply units 160 are connected in series.

[0033] The filter mechanism 200 includes two motors 210 installed on the rear side of the airflow channel 150, a filter cloth 220 that movably passes through the airflow channel 150 and is connected between the two motors 210, and a brush 230 that is attached to the inner side of the filter cloth 220. The brush 230 is fixedly connected to the outer wall of the airflow channel 150.

[0034] The dustproof mechanism 300 includes a diversion pipe 310 connected and communicating with the airflow channel 150, a box 320 disposed at the bottom of the brush 230, and a plurality of adhesive plates 330 inserted into the box 320.

[0035] Furthermore, the diversion pipe 310 is configured in the shape of "[", with the air inlet of the diversion pipe 310 located between the spinneret assembly 140 and the filter cloth 220, and the air outlet of the diversion pipe 310 located at the top of the brush 230. The layout design of the diversion pipe 310 ensures that the air entering the diversion pipe 310 is filtered air, thereby preventing the filter cloth 220 and the brush 230 from getting dirty again.

[0036] Furthermore, multiple adhesive plates 330 are arranged at equal intervals in a row. The lengths of the multiple adhesive plates 330 are different and gradually increase from top to bottom. The layout and size design of the multiple adhesive plates 330 can stick to all the dust in the air that enters the box 320.

[0037] Furthermore, an airflow nozzle 600 is sleeved at the air outlet end of the diversion pipe 310. The airflow nozzle 600 is suspended at the top of the brush 230. The airflow nozzle 600 allows the air ejected from the diversion pipe 310 to be completely blown onto the brush 230.

[0038] Example 2:

[0039] Combination Figure 2-3 As shown, based on Embodiment 1, a filter 400 is installed on the meltblown tube 120. The filter 400 is located between the screw extruder 110 and the metering pump 130. The filter 400 can filter the polypropylene raw material flowing out of the screw extruder 110 and improve the spinning quality.

[0040] Example 3:

[0041] Combination Figure 3-4 As shown, in the above embodiment, two pressure cylinders 500 are movably embedded on both the front and rear sides of the airflow channel 150. The multiple pressure cylinders 500 are respectively attached to both sides of the filter cloth 220. The pressure cylinders 500 can guide the filter cloth 220 and reduce the amount of air flowing out from the front and rear sides of the filter cloth 220.

[0042] The working principle and usage process of this utility model are as follows: When this device is put into actual use, high polymer polypropylene is first added to the screw extruder 110 for heating and melting. The resulting molten polypropylene is then transported to the filter 400 to filter impurities. The molten polypropylene is then quantitatively transported to the spinneret 140 via the metering pump 130. At this time, the air supply units 160 on both sides of the spinneret 140 deliver near-sonic hot airflow, blowing the outflowing molten polypropylene, causing it to be rapidly thinned. During the falling process, it is cooled and solidified by the external traction airflow, becoming ultrafine fibers. These fibers are then sprayed onto the external mesh belt receiver. During this process, the hot air provided by the air supply unit 160 is filtered by the filter cloth 220 as it passes through the airflow channel 150. To ensure sufficient airflow in the filter cloth 220... To ensure cleanliness and speed of airflow through the filter cloth 220, the operator will start a separate motor 210 to rewind the filter cloth 220. The filter cloth 220 is cleaned as it passes over the brush 230. Then, when the filter cloth 220 on another motor 210 is finished being rewound, the other motor 210 is started to achieve the reciprocating movement of the filter cloth 220, ensuring the filtration effect of the filter cloth 220 and the airflow speed. Then, the hot air flowing out from the airflow channel 150 will also reach the top of the brush 230 through the diverter pipe 310. The airflow blown out by the diverter pipe 310 guides the dust and impurities cleaned by the brush 230, so that these dirts are uniformly put into the box 320. Then, the dirts are adhered by the adhesive plate 330, effectively preventing dust and other phenomena from occurring.

[0043] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A nonwoven fabric meltblown stretching device, characterized in that, include: The drawing mechanism (100) includes a screw extruder (110), a meltblown tube (120) connected and communicating with the screw extruder (110), a metering pump (130) installed on the meltblown tube (120), a spinneret assembly (140) sleeved on the outside of the output end of the meltblown tube (120), two airflow channels (150) installed on both sides of the spinneret assembly (140), and an air supply unit (160) connected to the outer end of the airflow channel (150), with the two air supply units (160) connected in series. The filter mechanism (200) includes two motors (210) installed on the rear side of the airflow channel (150), a filter cloth (220) that movably passes through the airflow channel (150) and is connected between the two motors (210), and a brush (230) that is attached to the inner side of the filter cloth (220). The brush (230) is fixedly connected to the outer wall of the airflow channel (150). The dustproof mechanism (300) includes a diversion pipe (310) connected and communicating with the airflow channel (150), a box (320) located at the bottom of the brush (230), and a plurality of adhesive plates (330) inserted into the box (320).

2. The nonwoven fabric meltblown stretching device according to claim 1, characterized in that, The diversion pipe (310) is configured in the shape of "[", with the air inlet of the diversion pipe (310) located between the spinneret assembly (140) and the filter cloth (220), and the air outlet of the diversion pipe (310) located at the top of the brush (230).

3. The nonwoven fabric meltblown stretching device according to claim 1, characterized in that, Multiple adhesive boards (330) are arranged in a row with equal spacing. The lengths of the adhesive boards (330) are different and gradually increase from top to bottom.

4. The nonwoven fabric meltblown stretching device according to claim 1, characterized in that, A filter (400) is installed on the meltblown tube (120), and the filter (400) is located between the screw extruder (110) and the metering pump (130).

5. The nonwoven fabric meltblown stretching device according to claim 1, characterized in that, Two pressure cylinders (500) are movably embedded on both the front and rear sides of the airflow channel (150), and multiple pressure cylinders (500) are respectively attached to both sides of the filter cloth (220).

6. The nonwoven fabric meltblown stretching device according to claim 1, characterized in that, The air outlet end of the diversion pipe (310) is fitted with an airflow nozzle (600), which is suspended above the brush (230).

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