FI58172C - DESINTEGRERINGS- OCH BLAOSANORDNING FOER MATERIAL SAOSOM PAPPERSMASSA - Google Patents

Description

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Patent mrJJelat (51) (Cv.ik.Va.3 d 21 D 1/38, B 02 C 13/10 FINLAND —FINLAND (21) Pwenttltakemut —P * t «« «n« 6knli * j 751070 (22) Hkkamltpllvi - AnvWtnlnf ^ g 09 · 0 ^ 4.75 (23) Alkupliv »—GIW | h« * dtf 09. OU. 75 (41) Tullut JulklMksI - Bllvlt offmtllg lH. 11.75 IWittl. F * registry board Nlhtivtoip ^ on ku „L |« «K.aun pvm.-

Patent · och registerstyrelsan 'Amektn utlagd och utl.tkrlftan publicend 29 · 08.80 ^ (32) (33) (31) Pyrdvtty «tuollMU» —Begird priority 13.05.7 * 4 US A (US) * + 69 * + * + 8 ^ (71) Ingersoll-Rand Company, 200 Chestnut Ridge Road, Woodcliff Lake, New

Jersey, USA (US) (72) Oscar Luthi, Nashua, New Hampshire, USA (US) (7 * 0 Berggren Oy Ab (5 * 0 Material such as pulp dispersing and blowing device - Desintegrerings-och bläsanordning för material sAsom pappersmas

The present invention relates to a device for dispersing and blowing material such as pulp, comprising a housing, a rotatable drive shaft in conjunction with a housing, a dispensing member which divides the housing into a material chamber on one side of the dispenser and a gas chamber on the opposite side of the dispenser. at the center of the distributor for supplying material to the material chamber, a gas supply connection connected to the gas chamber for supplying blown gas thereto, a plurality of wings in the material chamber, the inner ends of which are located substantially at the center of the distributor and the outer ends spaced apart from the distributor circumference; the vanes being connected to the drive shaft for rotation thereof, a material dispersing member operatively in contact with the vanes for disintegrating the material passing outwardly between the wings, a material removal member for removing the disintegrated material from the material chamber, e.g. a suction including a passage at the periphery of the manifold to cause the blowing gas to flow from the gas chamber to the material chamber so that this blowing gas blows the disintegrated material into the material removal member.

2,581 72

The object of the invention is in particular to avoid blockages in the removal member of the device. To this end, a dam member is arranged between the material dispersing member and its removal member to prevent the transfer of heavy ingredients from the dispersing member towards the removal device. The device may include an exhaust coil that is axially spaced from the rotating blades of the device.

The features of the invention appear from the following claims.

The invention is illustrated below with reference to the accompanying drawing, which illustrates some preferred embodiments of the invention:

Fig. 1 is a vertical side view, with parts removed and partially sectioned, and schematically shows an embodiment of a device according to the invention; Fig. 2 is an elevational end view, partially exploded and sectioned, of the embodiment of the device of Fig. 1; Fig. 3 is a greatly enlarged fragmentary sectional view showing a fiber dispersing member of a material of said device and an associated structure; Fig. 4 is another greatly enlarged fragmentary view showing a fiber dispersing member, and Figs. 5 and 6 are partial views showing other embodiments of a fiber dispersing member suitable for alternative uses of the apparatus of Fig. 1.

The embodiments of the invention shown in the drawing, in which the same reference numerals denote corresponding parts in all its different figures, are particularly well suited for use with, for example, a gas-filled reaction vessel described in U.S. Patent Application No. 288,031. However, the invention is not limited to such a gas-filled reaction vessel. reaction processes, but the invention can also be used with other types of equipment and in connection with other processes.

As shown in Figures 1-4, the device comprises a housing, i.e. a housing 10, inside which is a non-perforated, disc-shaped, rotating partition or barrier wall 12, hereinafter referred to as a rotor. The rotor 12 divides the housing 10 into two parts, namely a blow chamber 14 on one side of the rotor 12 and a material chamber 16 on the opposite side of the rotor. The circumference of the rotor 12 is at a distance from the parts of the device close to it, so that an annular space 18 is formed, which communicates with the chambers 14, 16. The rotor 12 is mounted on a hub unit, generally indicated by reference numeral 20, which in turn is mounted at one end of the drive shaft 22 for rotation, which shaft 22 is rotatably supported by bearings inside the bearing housing 24 and adapted to rotate by a conventional drive motor (not shown); at one end 26.

The blow chamber 14 communicates with the blow gas inlet chamber 32 through the axial hole 28 in the housing wall 30, which is also inside the housing 10. The housing 10 is provided with a blowing gas inlet connection 34 which connects the inlet chamber 32 to a blowing gas source from which gas can be continuously led to the inlet chamber 32. The blowing gas source may be, for example, a gas-filled reaction vessel according to the aforementioned U.S. Patent Application 288,031. The rotor 12 rigidly supports an impeller in the blow gas chamber 14, which according to the drawing comprises a plurality of spaced radial fan blades 36. The fan blades 36 are attached to the hub unit 20 at their inner ends. through space 18.

The housing 10 is also provided with a material inlet connection, i.e. an inlet line 38, which opens in the middle of the chamber 16 and, as can be seen in the drawing, concentrically with the rotor 12. The function of this material supply connection 38 is to continuously supply pulp or other material to the chamber 58172 16 during operation. The material supply connection 38 communicates with the material supply line 40 to a source of pulp or other material (not shown), which line 40 includes a portion of reduced cross-section to the material supply connection 38. . The forcibly rotated shaft 42 is located concentrically in this tapered portion of the conduit 40 and supports the feed and compaction screw 44 therein, which is continuously rotated whenever the device is running. Thus, throughout the operation of the device, the coil 44 continuously occludes the material in the tapered portion of the conduit 40 to form a plug of encapsulated material into the conduit 40 on the inlet side of the material supply port 38, thereby preventing both gas loss from the housing 10 along the conduit 40 and unwanted gases into the housing 10. wire up to 40. At the same time, the coil 44 feeds this plug of material through the material inlet 38 into the material chamber 16. - Immediately near the material inlet 38 in the material chamber 16, in the middle of the rotor 12, the pole unit supports compressed material. The rotor 12 rigidly supports a plurality of substantially radial blades 48 in the material chamber 16, at spaced distances from the blades 46. The vanes 48 are spaced substantially by radial pockets, i.e., channels 50, and the inner ends 52 of the vanes 48 are spaced apart substantially in the center of the rotor 12 so that broken material can pass into the inner ends of these pockets 50. The outer ends 54 of the vanes 48 are spaced apart along the circumference of the rotor 12 so that said fractured material as the vanes 48 rotate exits the pockets 50 at their outer ends 54 at a speed determined by their rotational speed. The sides of the pockets 50 on the rotor 12 side are closed along their entire length by the rotor 12 in direct contact with the blowing gas chamber 14. Opposite sides of the pockets 54, on the other hand, are open for the purpose explained below.

The housing 10 is provided with a material discharge tube, generally designated 56, which communicates with the material chamber 16 to remove fiber-disintegrated material from the housing 10. The material discharge tube 56 comprises an outlet coil 58 located axially spaced from the material chamber 16. and the wings 48 contained therein, such that these wings 48 are completely outside the helix 58. The annular wall 60 surrounding the wings 48 has a constant, uniform distance throughout its curved dimension from the outer ends 54 of the wings. The helix 58 is open on its inner circumference 62 to the material chamber and to the open sides of the pockets 50 between the wings 45.

The machine material fiber dispersing member is generally designated 64 and is located in the material chamber 16 radially spaced outside the outer ends 54 of the wings between these outer ends by a path of material exiting the pockets 50. The wings 48 can be rotated relative to the material dispersing member 64. The member 64 is specifically adapted to disperse the material as it impinges on the device, while forcing the material to enter inwardly toward the outer ends 54 of the wings. In addition, a dam member, generally designated 66, is provided between the material dispersing member 64 and the material removal member to prevent heavier, undegraded or only partially decomposed material from entering the material removal member.

As shown in Figures 1-4, the material dispersing member 64 more specifically comprises an annular corrugated dispersing ring 68 having alternately inwardly projecting ridges 70 and outwardly directed recesses 72 along its entire length and rigidly attached to the annular wall 60 of the housing to extend 48 around the annular space 74 separated from their outer ends 54. As can be seen from the drawing, this space 74 communicates on opposite sides with the space 18 around the circumference of the rotor 12 and the exhaust coil 58 so that blowing gas from the space 18 flows transversely through the space 70 to the exhaust coil 58. material to the latter. The corrugated shape of the dispersing ring 68 causes the material exiting the pockets 50 to disintegrate into fibers upon impact with the ring 68 and at the same time the material moves inwardly from the ring 68 toward the outer ends 54 of the wings so that the lighter, disintegrated material 6 58172 moves inwardly. blows over the dam member 66 to be explained in the follower into the helix 58.

The dam member 66 comprises an annular ramp 76 attached to the housing wall 60 and positioned between the diffuser ring 68 and the coil 58 immediately after the diffuser ring 68. The ramp is inclined upwardly from the ring 68 toward the helix 58 so that material near the inner circumference of the ring 68 must rise up the ramp 76 to enter the discharge helix 58.

Thus, the ramp 76 prevents or delays the entry of heavier material into the helix 58 and retains it in the region of the ring 68 to disintegrate into its lighter components. In addition, the ramp 76 prevents the formation of material pockets, which would otherwise naturally occur at this point, and which material pockets would be quite detrimental, especially because the material contained in the pockets would be contaminated and then detached from the pockets as lumps.

The dam member 66 further comprises an inwardly projecting annular dam wall 78 located between the ramp 76 and the helix 58 and defining an open side 62 of the helix 58 extending further inward than the inner edge of the ramp 76 and preventing heavier material from entering the helix 58 from the top of the ramp 76. 4, and as described above, both the diffuser ring 68 and the ramp 76 may be components attached to the housing wall 60. As shown in Figure 5, where parts such as those described above are indicated by corresponding reference numerals plus the letter a, the ramp 60a may be formed in one piece with the housing wall 60a.

Similarly, as shown in Figure 6, where parts such as those described above are indicated by corresponding reference numerals plus the letter b, the diffuser ring 68b may be replaced by annular rows of angular members 78 attached to the housing wall 60b around the wings 48 in the same manner as described above. relative to ring 68. In this case, the dam member 66 described above and the rest of the device may, of course, be as described above.

The shaft 22 of the apparatus of Figures 1-4 is continuously rotated to cause the rotor 12, blades 48, knife-like members 46 and 7 58172 fan blades 36 to rotate continuously. The blowing gas is continuously fed to the gas inlet chamber 32 from where it passes to the gas chamber 14 where the rotating fan blades 36 blow the gas at a relatively high speed through the annular spaces 18, 74 to blow the disintegrated mass into the exhaust coil 58 and out of the housing 10. The pulp is continuously fed the sealing coil 44 is continuously rotated to seal the pulp into a non-porous plug on the inlet side of the material inlet 38, while continuously feeding this sealed pulp plug into the material chamber 16 through the inlet 38. The knife-like members 46 break the mass thus fed into pieces and the broken mass passes outwards between the inner ends 52 of the wings 48 into the channels between them, i.e. pockets 50. Rotation of the wings 48 accelerates the mass at a relatively high speed as it radially outwards through the pockets 50 and exits outwards between the outer ends 54 of the wings at this relatively high speed determined by the rotational speed of said outer ends 54. The exit direction of the pulp between the outer ends 54 of the wings is schematically indicated by a broken arrow in Figure 4. As a result, the pulp leaving collides with the scattering ring 68 at its relatively high exit velocity.

This collision of the pulp with the ring 68 causes the exiting pulp to disintegrate into smaller, lighter groups of fibers and in some cases even private fibers that are ejected inward back toward the outer ends 54 of the wings where they rapidly blow with gas over the dam member 66 and out through the discharge coil 58. However, heavier pulp bundles do not blow with the gas over the dam member 66, and because they are unable to rise up the ramp 76 and reach the dam wall 78, they will repeatedly collide with the scattering ring 68 until they finally disintegrate into lighter fiber groups or fibers that can blown into the exhaust coil as described above.

Since the sides of the helix 58 on the pockets 50 are open towards the helix, it is provided that part of the blowing gas circulates back through the pockets 50, which improves the dissipated

Claims (16)

A disintegrating and blowing apparatus for materials such as paper pulp comprising a housing (10), a rotatable drive shaft (22) joined to the housing (10), a dividing member (12) dividing the housing into a material chamber (16) on one side of the dividing means (12) and a gas chamber (14) on the opposite side of the dividing means (12), a material inlet means (38) connected to the material chamber (16) central to the dividing means (12) for supplying material to the material chamber (16), gas inlet means (32) connected to the gas chamber (14) to supply blowing gas thereto, a plurality of vanes (48) in the material chamber (16), whose inner ends (52) are arranged substantially centrally to the dividing means (12) and whose outer ends (54) ) are spaced adjacent the periphery of the dividing member (12), wherein the vanes (48) are connected to the drive shaft (22) for rotatably driven therefrom, a material disintegrating means (64) so connected to the vanes (48) that it disintegrates material passing unabated between s the blades (48), a material dispensing means (56, 58) for dispensing disintegrated material from the material chamber (16), a member (18, 36) comprising a duct member (18) peripherally to the dividing member (12) which causes blow gas flow from the gas chamber (14) to the material chamber (16), this blowing gas blowing the disintegrated material to the material dispensing means (56, 58), characterized by the combination that the material disintegrating means (64) is arranged at intervals from the outer ends of the vanes (48). 54) and in the web of material discharged from a position between said outer ends (54), wherein the material disintegrating means (64) is arranged around the outer ends (54) of the vanes so as to disintegrate the material through impact and also to cause the material to move inwardly against said outer ends (54), and a dam (66, 76, 78) between the material disintegrating means (64) and the material dispensing means (56, 58) to restrict the movement of heavier material from a position adjacent the material disintegrating means (64) to the material dispensing means (56, 58). 12 5 81 72 2. Apparatus according to claim 1, characterized in that the dam means comprises a ramp means (76) which is inclined towards the material discharge means (56, 58). Apparatus according to claim 1, characterized in that the dam means comprises a dam wall (78). 4. Apparatus according to claim 1, characterized in that the dam means comprises a ramp means (76) inclined against the material discharge means (56, 58), and a dam wall (78) between the ramp means (76) and the material discharge means - (56, 58). Apparatus according to claim 4, characterized in that the ramp means (76) are arranged peripherally to the dividing means (12) and adjacent to the material disintegrating means (64), that the material discharge means (56, 58) comprises an output snap (58) which is axially separated from the the vanes (48), and that the dam wall (78) extends inwardly from the ramp means (76) and limits one side of the discharge auger (58). 6. Apparatus according to claim 4 or 5, characterized in that the vanes (48) are rotatable relative to the material disintegrating means (64), the ramp means (76) and the dam wall (78). 7. Apparatus according to any one of claims 1-4, characterized in that the material dispensing means (56, 58) comprise an output worm (58) axially separated from the vanes (48). Apparatus according to any one of claims 1-7, characterized in that the dividing means (12) comprises a rotor connected to the drive shaft (22) for rotatably driven by it. Apparatus according to any of claims 1-8, characterized by a rotatable fan means (36) in the gas chamber (14) for supporting the flow of blowing gas from the gas chamber (14) to the material chamber (16) through said duct means (18).