Патент USA US2124393код для вставки
July 19, 1938. " ' . R. c. BENNER ET AL - REFINER 2,124,393 I Filed Nov. 14,‘ 1935 2 Sheets—-Sheet 1 10 12 II INVENTOR. RAYMOND Q'BENNER‘ AL‘BERT L. BALL. BY ATTORNEY. July 19, 1938. ‘ R. c. BENNER ET AL ‘ REFINEF. . 2,124,393 I Filed Nov. 14, 1955 2 Sheets-Sheet. 2‘ INVENTOR. RAYMOND C. BENNER ALBERT L. BALL - . ' ATTORNEY. Patented July 19,1938 I - v2,124,393 UNITED STATES PATENT‘, orsica ~ ‘ \ REFINER Raymond 0. Banner, Niagara Falls, and Albert L. Ball, Lewiston, 'N. Y., assignors, by mesneas signments, to The Carborundum Company; Ni agara'Falls, N. Y., a corporation of Delaware Application November 14, 1935, Serial No. 49.104 1‘ Claim. (01. lib-27) This invention relates to the class of machines description of this method is included here for the commonly referred to as-re?ners, re?ning en gines, Jordan re?ners or'Jordan engines, and has for its purpose the provision of a machine» with 5 superior operating characteristics. _ Machines of this class mentioned‘ above are used for the re?nement of ?brous materials, such as wood pulp and are used to a large extent in salvaging material too coarse to be used 'in the ‘ ‘10 manufacture of paper. . It has been known that a re?ner in which the purpose of clarity and‘ completeness. The shell is ?rst sand-blasted in order to re-. move scale and the like and to produce a clean, bright surface. If not touched by the hands or if not allowed to come in contact in any way with oils or greases or the like, the Sande-blasted sur face is ready tor use as is,- but otherwise it should be washed oil with gasoline, naptha or other grease removing material. The bright metal 10 surface is then coated with a cement suitable shell ‘was lined with bonded abrasive material and the plug was made of bonded abrasive ma terial would operate more satisfactorily than the for promoting the adherence of rubber to metal. vThe previous re?ners in which bonded abrasives were used were found to have certain disad air bubbles that may gather.~ Apsuitable type of rubber for the purpose is that known in the rub, vantages because both the shell lining and the ber art as treadstock. A layer of unvulcanized rubber compound ap proximately one-fourth (V4) inch thick is then 15 15 previously known re?ners, in which metal bars , applied to the cement coated surface ‘of the or knives were used in the shell and on the plug. shell and is carefully rolled to squeeze out any . The surfaces of the abrasive blocks that are 20 to be joined, either one to another or to the metal quence of this rigidity the linings and plugs have shell, are, then coated with the rubber cement ,worn out quite rapidly and the quality of ?bre referred to above. The blocks are then placed ‘on the layer of rubber applied to the shell and produced has been inferior. . In accordance with the presentinventiomeither asimilar layer of rubber is placed between the 25 plug were unyielding; that is, there was no resil iency in the lining or in the plug. As a conse the shell lining, the plugyor both the shell lining and the plug are made resilient. Thus, the gap adjacent blocks. When the entire shell has been ?tted with blocks. in the manner Just described, between the shell lining and the plug, which gap a suitable mandrel can be inserted to apply pres ' ordinarily is quite small, enlarges slightly when sure to the blocks, whereby they are forced into 30 more than the usual amount oi’ pulp, or pulp of intimate contact with the layer of rubber, and 30 then heat can be applied‘ tocure the rubber and‘ greater consistency, is forced through the ma chine. The enlarged gap results in less wear on bind the'blocks, . the parts and also permits of better re?ning, with less cutting up of the'?brous material. 35 ~ A better understanding of the invention will ‘be had by reference to the accompanying draw ings in which _ The method by which the rubber is vulcane ized is a matter of choice and convenience be cause it can be done by any of the methods well ' known in the rubber art. - The assembly of the plug illustrated in Figure 2 is carried out in the s'amegeneral manner as was just described for the shell of Figure 1. In Figure 1 is a broken awayview of a part of a shell and its lining; 40 p 40 Figure 2 is a perspective ‘view of a .plug made. this case the shaft II is given a bright, clean in accordance with the invention; _ _ Figure 3 is a broken ‘away view of a part of a shell/and another type of lining; and 45 Figure 4' is a perspective view or a plugin which a modi?cation _of the invention is utilized. I 'In Figure 1, the metal .shell I is shown with - blocks of bonded abrasive material 2 attached 1thereto by means of a layer of rubber I, which 50 is tough and resilient. The rubber also ex tends. between the (abrasive blocks and thus fur ' theradds to the resiliency of the structure. The method by which the abrasive blocks are attached to the metal shell- is the same as the 55 methodwell-known in the art. however, a brief - surface by sand~blasting and washing with grease solvent if necessary. Then the abrasive seg ments ll , forming the frusto-conical abrasive member are applied to the shalt with their ?utes II in alignment after .the same has been coated 45 with suitable rubber cement and rubber. Here again a layer of rubber .is- applied between the abrasive members. The layer of rubber l2 shown between the blocks II and between the blocks II and the, shaft} II is oftough resilient nature 50 when cured. Such a material is the tread stock known to the rubber art. ' '\ I vThe modi?cation shown in ‘Figure 3 differs, from that shown in Figure l in that relatively small pieces of bonded. abrasive material 20 are 2 2,124,393 used instead of large blocks as in the former ?gure, and that these smaller pieces are held in place and to the metal shell by a matrix of rub ber 2_I instead of by a layer of rubber. The rela ‘ As has been stated above, a re?ner'built ac cording to the present invention has advantages of considerable merit. The stock recovered from a machine embodying the present invention the same may be used to obtain a higher degree of resiliency than that obtained by the use of a makes a better sheet of paper because the ?bres, although of less thickness, are of greater length rubber matrix. , ~ In Figure 4 is shown a modi?ed form of plug in which relatively small pieces of bonded abra sive 3| are held in a matrix of rubber 32. As in the modi?cation of shell lining shown in Figure 15 3, the layer of rubber between the metal shaft l0 and are well frayed. These longer, well frayed 10 ?bres mat well and produce a strong, smooth sheet of paper. The presentylnvention also has the advantage of givinglonger life to the abrasive members by reducing the wear upon them. The resiliencyof 15 and the abrasive member can be dispensed with, although it may be used if it is desired to ob the abrasive member or members provides a gap that expands as the load increases and hence tain additional resiliency. produces a path of greater area through which the stock may pass. Consequently, the pressure and shock exerted upon the abrasive face is less 20 and the wear is reduced. Other advantages will become apparent to those skilled in the art. and it also will become apparent that other modi?cations than those il lustrated and described can be constructed with out, departing from the scope of the invention, which is de?ned by the following claim. ' - As ‘is already well known in the art, a re?ner ' 20 comprises a shell and a plug rotatably mounted within the said shell, and usually the interior at ' least of the shell is of frusto-conical shape. The plug for a frusto-conical shell also is of frusto conical shape and ?ts very closely into the said 25 lug action. irregular shape. The blocks being resilient, do not require the resilient layer of rubber although tively small abrasive pieces can be of regular or 10 only a small gap, and at the same time roughs the surfaces so that they produce a greater re?n shell. - - ' In carrying out the present invention either of the types of shell illustrated may be used with either of the types of plug, also illustrated. If desired, however, a conventional abrasive plug 30 may be combined with either of the types of shell illustrated, or a conventional abrasive shell can. be combined with either of the types of plug illustrated. A close ?t between the shell and plug is ob tained by rotating the plug within the shell while ?ne abrasive granules, such as sand, emery, sili con carbide or fused alumina, and water are forced between the said shell and said plug. This trues up the two surfaces so that they present We claim: ' A pulp refining engine comprising in combina tion, a metal shell, a lining for said shell consist 30 ing of bonded‘ abrasive blocks, a substantially continuous layer of tough, resilient, vulcanized rubber between said blocks and between said blocks and said shell, the said blocks being at tached to said shell by the said layer of rubber, 35 and a plug of bonded abrasive material rotatably mounted within said shell. ' RAYMOND C. BENNER. ALBERT L. BALL.