SU583766A3 - Device for manufacturing fibrous nonwoven fabric - Google Patents

Description

section aa of figure 4; figure 6 - the second drum of the drive of the conveyor; Fig, 7 - suction device, cross section; Fig. 8 is a cross-sectional view of the channels to give the tape a tubular shape; figure 9 - suction device, view from the inside; on - mobile tape; figure 11 - nozzle, vertical section; on Fig - nozzle, a cross-section in Fig, 13 - distribution device, a general view; Fig. 14 shows a suction device, a longitudinal section in Fig. 15 is a flow sheet of the installation; Fig. 16 is a longitudinal section of a suction device, an embodiment; in Fig.17 section bb of fig 16; FIG. 18 is a rotating device.

An apparatus for producing a nonwoven fibrous material comprises a receiving conveyor with an elastic band 1, a guide channel 2; the feeding device 3 and the suction device 4. The belt 1 moves along the drums 5 and 6. The guide channel has a front 7., an intermediate 8 and a rear 9 parts. The tape 1 can take the form of guides due to the displacement of the strands 10 and 11 of the axes of the tape located at an angle of 90 to each other and at an angle of 45k.

The tape is fastened with end strips E 1 and 12 with interlocking elements in the form of protrusions 13 and depressions 14, Rollers 17 ,, are attached to end strips 12 by bushings 15 and rivets 16, except foro the strips are reinforced by plates 18 to 19, Rollers 17 are moved in channels on guides 20. The tape drive 1 is provided with teeth 21, the Rarabane 6 is provided with a pair of cylindrical spherical wheels 22 which engage with the respective surface of the wedges 12. Similar wheels 23 are on the drum 5. The drive drum 5 is driven by a chain wheel 24 and a chain 25 through shaft 26 from which for the engine. Head drum 5 has perforations 27 and an air channel 28. Channel 28 has a central cylindrical part and part 29 with an adjustable air vent to the side of the perforated surface 27,.

The suction device 4 has a housing 30 and a series of suction nozzles 31 and is provided with a perforated inner casing 32 connected to the housing 30 and ribs 33, the casing being provided with radial gaskets 34.

The feeding device includes a channel 35 for feeding the fibers to a portion of the mesh tape 1 rolled into the pipe. Air is blown by the fan 36, Kakal 35 ends in the nozzle device 37, which leads to a suspension of fibers in the chamber, about () developed by conical elements 38 and 39, between which a series of reflecting distribution vanes 40 are installed.

Coaxially with channel 35, there is a device for applying a binder, having a channel 41 for feeding the binder. The rotating nozzle ring 42 carries several

0 radially arranged nozzles 43 and covers the ring 44. The binder flows from channel 41 to the rotating annular manifold 45 through a series of diverging angles

5 pipes 46, which also serve as a mechanical connection between the ring 42 and the connection 47, the drive motor 48 through the wheels 49 and 50 leads the connection 47. Each of

0 nozzles 43 communicate with the collector 45 through a shortened channel 51, and a needle 52 enters the hole in each nozzle, spring loaded 53. The needle 52 ends in paragraph 54, which interacts with the cam 55 on the ring 44. The suction device 4 is divided by annular bulkheads L6 and 57 on the fiber layout section, applying a binder and drying it. An unperforated tubular chamber 58 passes through the first section, thereby providing air flow in the direction of the belt movement.

The upstream suction unit includes a channel 59. A diverting device 60 coaxially with a channel 59 is attached to the bulkhead 57. The device for supplying heated air contains an annular chamber 61 for receiving heated air from the fan 62 and heaters 63. An annular chamber 61 is formed between the perforated drum 64 and channel 59. The installation works as follows.

Fibers in the form of a uniform suspension are introduced into channel 35. The best results are obtained with a suspension density of at least. The preferred suspension velocity is 914-1524 m / min. The mixture is directed to the moving mesh belt 1 by a centrifugal flow created by the nozzle device 37, and the suspension is expanded in volume

5 when passing it through a tape with a speed of at least 90 m / min. The blades 40 direct the slurry in streams, thus ensuring that the fiber layers are joined. The suction of air by the device 4 contributes to the expansion of the flow, the speed of the belt 1, the density of the suspension and the speed V determine the weight of the deposited fiber per unit area. After deposition on the formed

Claims (6)

and the web is applied with a binder material sprayed with rapidly rotating nozzles 43 when the web and tape 1 are still in a rolled-up shape. The drying of the polo and the curing of the binder material is carried out by air flow, and in the drying section by hot air pumped by the fan 62 through the perforated drum 64. After leaving the last section of the suction device 4, the tape 1 is straightened into a flat one by means of the guides 20 and ready (the fibrous material is lifted from the drum 5 by the air flow coming from channel 28. In the process of returning the tape to the drum 6, the tape can be subjected to air blowing, solvent dissolving, etc. A non-woven fiber fabric (Figs. 16 and 17) is provided with a nozzle device 65 located inside a mesh-coiled tube coaxially with the latter. It is equipped with a flow-raising ring 66 which is rotatably fixed over the mixture supply channel 67. The device 65 is from the coupling 68. The engine 69 drives the nozzle device 65 and the rotating device for the sprayed binder, and the rotary joint 70 is replaced with a simple retaining ring. The coupling 68 is fixed to a gear wheel 71, which gear 72 is connected to the engine 69. To the nozzle device 65, the movement communicates with the gear 73, which meshes with the gear 72, through the ring gear 74 and the gear 75, which sits on the shaft 76. Nozzle device 65 has a certain number of outlet openings 77, which are open to the channel 67 for discharging suspension through the annular channels 78. In the upward flow from the engine 69, an aerodynamic casing 79 is placed. The rotational speed of the nozzle 65 is about 150 revolutions per meter arrow 80, against the vector of the tangential velocity of the individual streams of suspension. The air supply and binder material is provided from channel 81. A version of the rotating device for suspension (Fig. 18) provides for the arrangement of the slots 82 at an angle in the direction of the rising flow 83. An electrostatic drive may be introduced to intensify the process. Claim 1. An apparatus for manufacturing a nonwoven fibrous material comprising a receiving conveyor with a flexible perforated tape, a conveyor drive) a feeding device having a guide channel and distribution vanes, and a suction device installed in the housing, characterized in that, in order to improve the quality of the material obtained, it is equipped with a device for applying a binder of nozzle type mounted coaxially to the feeding device for its blades with the possibility of rotation its y axis, guide means for bending the conveyor belt in a tubular shape, and drying device for covering a pipe in a folded portion of the conveyor belt. 2. Installation according to claim 1, characterized in that the drying device consists of a body, suction nozzles and a cylindrical perforated casing connected to the body with ribs, the casing being provided with radial gaskets. 3. The device according to claim 1-2, about which the suction device covers the part of the conveyor belt rolled into the tube and has sections for grading the fiber, applying a binder and drying it. 4. The apparatus according to claim 3, wherein the guide means is located on the body of the suction device. 5. Installation according to Claims 1-4, characterized in that the conveyor belt is mesh and provided with end strips with interlocking elements in the form of a protrusion and a hollow, sealing plates, bushings and rollers that interact with the guide device. 6. Set by n. This means that each end strip is provided with a series of teeth that interact with the conveyor drive. 1, Installation according to claim 1, so that the guide channel of the feeding device is located inside the part of the conveyor belt folded into the pipe, coaxially with the latter. S 28 7 20 20 Oh oh oh oh  oh oh oh oh oh oh oh oh oh oh oh oooooooo. oo o (d oh oh oh Qj oh oh oh I  oh oh oh oh oh oh oh oh ( о о о а.0 о о о о о о о о о oh oh oh oh oh oh oh oh oh ooooooooo oh oh oh oh oh oh oo about FIG. d FIG. Yu / TT J5 fi ig / l FIG 15 vr 77 1Rig. 17