CN216947419U - Air draft device for melt-blown fabric production - Google Patents
Air draft device for melt-blown fabric production Download PDFInfo
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- CN216947419U CN216947419U CN202123000462.8U CN202123000462U CN216947419U CN 216947419 U CN216947419 U CN 216947419U CN 202123000462 U CN202123000462 U CN 202123000462U CN 216947419 U CN216947419 U CN 216947419U
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- air draft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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Abstract
The utility model relates to the technical field of non-woven equipment, and discloses an air draft device for melt-blown fabric production, which comprises a main air draft duct, a reinforcing plate and at least two air draft pipelines, wherein the main air draft duct is respectively communicated with the at least two air draft pipelines, each air draft pipeline is provided with an air inlet, the air inlets face upwards, the air inlets are provided with air equalizing grids with the same mesh size, the air draft pipelines are provided with pressure regulating valves, the reinforcing plate is fixed on the main air draft duct, the reinforcing plate is separated from the air draft pipelines, and a fixed grid is connected between the reinforcing plate and the air inlets. Be connected with fixed net between reinforcing plate and the air intake, can improve the structural strength of suction line through reinforcing plate cooperation fixed net, avoid suction line to receive the wind-force influence and empty, be separated by through making reinforcing plate and suction line, leave the headspace between reinforcing plate and the suction line for whole air intake becomes the center that wind passed through, and the headspace becomes the edge that wind passed through, ensures that the amount of wind that passes through the air intake keeps even.
Description
Technical Field
The utility model relates to the technical field of non-woven equipment, in particular to an air draft device for melt-blown fabric production.
Background
Currently, suction bellows in meltblowing equipment mainly function to collect fibers ejected from a meltblowing die on a screen to make the fibers aggregate into a web. The traditional suction air box structure mostly exists in a cuboid form, the cuboid is transversely placed, one surface, which is attached to the net curtain, serves as a fiber web forming surface, and the other 3 surfaces are closed; induced draft from the both sides of cuboid, main mode of induced drafting has following two kinds: firstly, wind is sucked at two sides of the air box, and secondly, the wind is sucked at a single layer of the air box. In the production process of the two types of air boxes, suction force at each position in the transverse direction of the net curtain is not uniform, and at places with large suction force, fibers are gathered, so that the formed fiber net is compact, the resistance of the fiber net is large, the gram weight is high, and the filtering efficiency is high; and at the place with small suction force, the fibers are less gathered, the formed fiber web is more fluffy, the resistance of the fiber web is smaller, the gram weight is lower, and the filtering effect is lower. Therefore, the traditional suction air box has the problem of large difference of performances such as gram weight, resistance, filtration efficiency and the like of different positions on the same melt-blown non-woven fabric in the production process.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: suction force at each position of the air box is not uniform, and the difference of each position of the produced melt-blown non-woven fabric is large.
In order to solve the technical problem, the utility model provides an air draft device for melt-blown fabric production, which comprises a main air draft channel, a reinforcing plate and at least two air draft pipelines, wherein the main air draft channel is respectively communicated with the at least two air draft pipelines, each air draft pipeline is provided with an air inlet, the air inlets face upwards, the air inlets are provided with air equalizing grids with the same mesh size, the air draft pipelines are provided with pressure regulating valves, the reinforcing plate is fixed on the main air draft channel and separated from the air draft pipelines, and a fixed grid is connected between the reinforcing plate and the air inlets.
Further, the main air draft channel is located below the air draft pipeline, and the reinforcing plate extends upwards from the main air draft channel.
Further, the fixed grids and the wind-equalizing grids are located on the same horizontal plane.
Further, the mesh aperture of the fixed grid is larger than that of the wind-equalizing grid.
Furthermore, the aperture of the mesh of the air-equalizing grid is 5-10 cm, and the aperture of the mesh of the fixed grid is 10-20 cm.
Furthermore, the air draft pipeline comprises an air pipe and a funnel, one end of the air pipe is communicated with the main air draft channel, the other end of the air pipe is communicated with an outlet of the funnel, and an inlet of the funnel is the air inlet.
Further, still include the guide plate, the face of guide plate is the relative horizontal plane slope, the guide plate respectively with the reinforcing plate with the exhaust duct links to each other, the face orientation of guide plate the funnel.
Further, the baffle is located directly below the fixed grid.
Further, the air suction pipeline is provided with a negative pressure detection device for detecting air pressure.
Compared with the prior art, the air draft device for melt-blown fabric production has the beneficial effects that: the reinforcing plate with be connected with fixed net between the air intake, through the reinforcing plate cooperation fixed net can improve the structural strength of suction line, avoids suction line to receive wind-force to influence and topple over. The reinforcing plate is spaced apart from the suction duct. Through making the reinforcing plate with the draft pipeline is separated by, the reinforcing plate with leave the headspace between the draft pipeline for whole air intake becomes the center that wind passed through, and the headspace becomes the edge that wind passed through, ensures that the amount of wind that passes through the air intake keeps even, only needs the transmission non-woven fabrics through the air intake, just can guarantee to form even fibre on the non-woven fabrics.
Drawings
FIG. 1 is a schematic structural diagram of one embodiment of the present invention;
FIG. 2 is a side view of FIG. 1;
figure 3 is a top view of one embodiment of the present invention.
In the figure, 1, a main air extraction duct; 2. a reinforcing plate; 21. fixing the grid; 3. an air extraction duct; 31. an air inlet; 32. wind-equalizing grid; 33. a pressure regulating valve; 34. a gas delivery pipe; 35. a funnel; 36. a negative pressure detection device; 4. a net curtain; 5. a baffle.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", etc., used herein to indicate the orientation or positional relationship, are based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, an air draft device for meltblown fabric production according to a preferred embodiment of the present invention includes a main air draft duct 1, a reinforcing plate 2, and at least two air draft pipes 3, where the main air draft duct 1 is respectively communicated with the at least two air draft pipes 3, and the main air draft duct 1 is externally connected to a suction fan. In this embodiment, the number of the suction ducts 3 is nine, and all the suction ducts 3 are arranged side by side in a row. In other embodiments, the number of the air draft ducts 3 may be adjusted according to the size of the meltblown nonwoven fabric to be produced. Each air draft pipeline 3 is provided with an air inlet 31, in actual use, a net curtain 4 is arranged above the air inlet 31, the aperture of meshes of the net curtain 4 is 25-35 meshes, preferably, the aperture of the meshes of the net curtain 4 is 30 meshes, and the net curtain 4 is used for conveying non-woven fabrics.
As shown in fig. 1-3, the air inlet 31 faces upward, the air inlet 31 is provided with an air-equalizing grid 32 with the same mesh size, the uniformity of air flowing into the air-extracting duct 3 can be improved due to the uniform mesh size of the air-equalizing grid 32, and the air-extracting duct 3 is provided with a pressure regulating valve 33. Under the condition that a plurality of air suction pipelines 3 are parallel and operate simultaneously, if the ventilation performance of each air suction pipeline 3 is the same, the ventilation quantity of the air suction pipeline 3 in the middle is larger than that of the air suction pipeline 3 at the edge, the utility model adjusts the ventilation quantity of each air suction pipeline 3 to be consistent by arranging the pressure regulating valve 33 and controlling the pressure regulating valve 33 of the air suction pipeline 3 in the middle, so that uniform negative pressure is formed above the air suction pipelines 3. Reinforcing plate 2 is fixed on main draft channel 1, reinforcing plate 2 with draft tube 3 is separated by, reinforcing plate 2 with be connected with fixed grid 21 between the air intake 31, through reinforcing plate 2 cooperation fixed grid 21 can improve draft tube 3's structural strength, avoids draft tube 3 to receive the wind-force influence and topple over.
The working process of the utility model is as follows: staff is through opening the suction fan of connection on main suction duct 1, and gas is followed air intake 31 gets into in the suction line 3, get into from suction line 3 again in the main suction duct 1 for 3 tops of suction line form the negative pressure, the equipment output fibre of 4 tops of net curtain, fibre are adsorbed on the net curtain owing to the relation of negative pressure, make it form the melt-blown cloth.
To sum up, the embodiment of the present invention provides an air draft device for meltblown fabric production, wherein the reinforcing plate 2 is spaced from the air draft pipeline 3, a reserved space is reserved between the reinforcing plate 2 and the air draft pipeline 3, and when the air draft pipeline 3 draws air, the air not only is drawn into the air draft pipeline 3, but also flows to the reserved space. Because the central position of the air inlet 31 is just under the drafting hot air, if only the air inlet 31 is arranged for air draft, the air quantity at the central position of the air inlet 31 is concentrated than the air quantity at the edge position of the air inlet 31, if only the air inlet 31 is arranged for air draft but no reserved space is arranged, too much drafting hot air can not be timely drawn away, air flow turbulence is easily formed in the area, so that the uniformity of the fiber web is influenced, and the reserved space is increased around the air inlet 31 to allow the air to flow to the reserved space after passing through the fixed grid 21, so that the whole air inlet 31 becomes the center through which the air passes, and the reserved space becomes the edge through which the air passes, so that the redundant hot air can be timely drawn away, the air quantity passing through the air inlet 31 is ensured to be uniform and stable, and the uniform fibers can be formed on the non-woven fabric only by driving the non-woven fabric to pass through the air inlet 31.
As shown in fig. 1-2, the main draft duct 1 is located below the draft duct 3, the reinforcing plate 2 extends upward from the main draft duct 1, the surface of the reinforcing plate 2 is perpendicular to the horizontal plane, and the surface of the reinforcing plate 2 and the side surface of the main draft duct 1 are integrally formed and coplanar, so that the strength of the reinforcing plate 2 and the whole main draft duct 1 is ensured, and the main draft duct 1 can support the draft duct 3 from the bottom end of the draft duct 3 and can also fix the top end of the draft duct 3 through the fixing grid 21. The fixed grids 21 and the wind-equalizing grids 32 are positioned on the same horizontal plane, so that wind can pass through the fixed grids 21 and the wind-equalizing grids 32 more smoothly. The mesh aperture of the fixed grid 21 is larger than that of the air-equalizing grid 32, and when the air inlet 31 conducts air draft, the wind at the edge can easily penetrate through the fixed grid 21, so that turbulent flow is avoided. Wherein the aperture of the mesh of the air-equalizing grid 32 is 5-10 cm, and the aperture of the mesh of the fixed grid 21 is 10-20 cm.
As shown in fig. 1-3, the air draft pipeline 3 includes air pipe 34 and funnel 35, the one end of air pipe 34 with main draft channel 1 is linked together, the other end of air pipe 34 with the export of funnel 35 is linked together, funnel 35 with the chamfer is handled with the junction of air pipe 34, the import of funnel 35 does air intake 31, the design of funnel 35 does benefit to air pipe 34 and inhales more amount of wind. A updraft ventilator for melt-blown fabric production still includes guide plate 5, the relative horizontal plane slope of face of guide plate 5, guide plate 5 respectively with reinforcing plate 2 with air suction pipeline 3 links to each other, the face orientation of guide plate 5 funnel 35, guide plate 5 can strengthen air suction pipeline 3's structural strength, especially funnel 35's structural strength. Wherein the baffle 5 is located directly below the fixed grid 21. The deflector 5 can direct the wind blowing into the headspace to the bottom outside the funnel 35. Every exhaust duct 3 all is equipped with the negative pressure detection device 36 that is used for detecting atmospheric pressure, and the staff can adjust according to the wind pressure size that negative pressure detection device 36 detected the air-vent valve 33, makes every exhaust duct 3's amount of wind keep unanimous.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (9)
1. An updraft ventilator for meltblown fabric production, its characterized in that includes: the air inlet is arranged towards the upper side, the air inlet is provided with an air equalizing grid with the same mesh size, the air suction pipeline is provided with an air regulating valve, the reinforcing plate is fixed on the main air suction duct, the reinforcing plate is separated from the air suction pipeline, and a fixed grid is connected between the reinforcing plate and the air inlet.
2. The air draft apparatus for meltblown fabric production of claim 1, further comprising: the main air suction duct is located below the air suction pipeline, and the reinforcing plate extends upwards from the main air suction duct.
3. The air draft apparatus for meltblown fabric production of claim 1, further comprising: the fixed grids and the wind-equalizing grids are positioned on the same horizontal plane.
4. The air draft device for meltblown fabric production of claim 1, wherein: the mesh aperture of the fixed grid is larger than that of the wind-equalizing grid.
5. The air draft apparatus for meltblown fabric production of claim 4, wherein: the aperture of the mesh of the air-equalizing grid is 5-10 cm, and the aperture of the mesh of the fixed grid is 10-20 cm.
6. The air draft apparatus for meltblown fabric production of claim 1, further comprising: the air exhaust pipeline comprises a gas pipe and a funnel, one end of the gas pipe is communicated with the main air exhaust channel, the other end of the gas pipe is communicated with the outlet of the funnel, and the inlet of the funnel is the air inlet.
7. The air draft apparatus for meltblown fabric production of claim 6, further comprising: the air draft structure is characterized by further comprising a guide plate, wherein the surface of the guide plate is inclined relative to the horizontal plane, the guide plate is respectively connected with the reinforcing plate and the air draft pipeline, and the surface of the guide plate faces the funnel.
8. The air draft assembly for meltblown fabric production of claim 7, further comprising: the guide plate is positioned right below the fixed grid.
9. The air draft apparatus for meltblown fabric production of claim 1, further comprising: the air draft pipeline is provided with a negative pressure detection device for detecting air pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000462.8U CN216947419U (en) | 2021-11-30 | 2021-11-30 | Air draft device for melt-blown fabric production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123000462.8U CN216947419U (en) | 2021-11-30 | 2021-11-30 | Air draft device for melt-blown fabric production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216947419U true CN216947419U (en) | 2022-07-12 |
Family
ID=82306760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123000462.8U Active CN216947419U (en) | 2021-11-30 | 2021-11-30 | Air draft device for melt-blown fabric production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216947419U (en) |
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2021
- 2021-11-30 CN CN202123000462.8U patent/CN216947419U/en active Active
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