US2787424A

US2787424A - Gyratory crusher with sealing ring

Info

Publication number: US2787424A
Application number: US393659A
Authority: US
Inventors: Arthur W Lippmann
Original assignee: LIPPMANN ENGINEERING WORKS
Current assignee: LIPPMANN ENGINEERING WORKS
Priority date: 1953-11-23
Filing date: 1953-11-23
Publication date: 1957-04-02
Anticipated expiration: 1974-04-02

Description

2 Shee ts-Sheet 1 Filed Nov. 23, 1953 INVENTOR ART HUR W.Ll PPMAN N April 2, 1957 A. w. LIPPMANN 2,787,424

GYRATORY CRUSHER WITH SEALING RING Filed Nov. 23, 1953 2 Sheets-Shed 2 v 35 V a? IN NTOR ARTHUR. IPPMANN as ATTORNEYS GYRATORY CRUSHER WITH SEALING RING Arthur W. Lipplnann, Milwaukee, Wis., assignor to Lippmann Engineering Works, Milwaukee, Wis., a partnership Application November 23, 1953, Serial No. 393,659

2 Claims. (Cl. 241-216) This invention appertains to rock crushers of the general type shown in my prior Patents No. 2,579,238 and No. 2,579,239, issued to me on December 18, 1951, in which the crushing head is given a gyratory motion relative to the stationary concave or bowl.

In this type of crusher, difiiculty is encountered in the proper lubrication of the bearings, in that certain bearings will be flooded with lubricant while other bearings will not receive their desired supply.

One of the primary objects of my invention is the provision of a sealing ring interposed between the crushing head and the stationary frame of the crusher and so located that the same will prevent the too rapid escape of the lubricant from the radial bearings and the upper thrust bearing, and at the same time prevent the flooding of the lower lubricant channel which is provided with a drain passageway.

Another salient object of my invention is to provide novel means for mounting the sealing ring, so that in spite of the gyratory action of the crushing head the desired seal be maintained.

A further important object of my invention is to provide a sealing means of the above character, which can be incorporated with a gyratory crusher at the time of its assembly with the expenditure of a minimum amount of time, labor and money.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described and claimed, and illustrated in the accompanying drawings, in which drawings,

Figure 1, is a central vertical sectional view through a gyratory crusher embodying the features of my present invention, the section being taken on the line 1-1 of Figure 2, looking in the direction of the arrows.

Figure 2 is a horizontal sectional view taken on the line 22 of Figure 1, looking in the direction of the arrows and illustrating the position and arrangement of my sealing ring.

Figure 3 is a fragmentary detail side elevational view of a portion of the sealing ring with parts thereof broken away and in section to illustrate one way of uniting the ends of the ring together.

Referring to the drawings in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter G generally indicates a gyratory crusher with my novel sealing means M incorporated therewith.

The gyratory crusher G can be of the general character shown in my prior patents heretofore mentioned, and hence, the crusher includes a base frame 5, which can be firmly secured to any suitable support (not shown). The frame 5 includes a cylindrical side wall 6. Formed on, or carried by the frame 5, is an axially disposed reservoir shell wall 7 for a lubricant and this wall can be united with the side walls 6 of the frame by radially extending webs. Communicating with one side of the reservoir is a bearing sleeve 9. The wall 7 also forms nited States Patent 2,787,424 Patented Apr. 2, 1957 a support for a crushing head 10, as will be later pointed out.

Mounted around the crushing head 10 is a bowl 11 for the rock to be crushed, and this bowl is carried by the frame 5 in a certain manner which forms no part of the present invention.

The crushing head 10 includes a substantially discshaped main body portion 12, which carries the crushing mantle 13. The mantle 13 and the main body portion 12 are mounted on a centrally disposed shaft 14.

Rotatably mounted in the reservoir shell wall 7 is a drive sleeve 15. Inner and outer bearing sleeves 16 and 17 are inteiposed respectively between the shaft 14 and the drive sleeve 15 and between the drive sleeve 15 and the reservoir shell wall 7. The bearing sleeves 16 and 17 constitute the radial bearings and the outer bearing ice ' sleeve 17 has formed thereon a thrust bearing 18 on which the main body portion 12 of the crushing head rests. The drive sleeve 15 constitutes the eccentric and upon rotation of the drive sleeve, the crushing head will be gyrated relative to the bowl 11.

The drive sleeve 15 can be rotated in any desired way, such as through the medium of a drive shaft 19, which extends into the frame 5 through the bearing sleeve 9. The shaft 19 has keyed, or otherwise secured, thereto a drive gear 20 which meshes with a beveled ring gear 21, rigidly fastened to the drive sleeve 15. A lower thrust bearing 22 is utilized between the bottom of the frame and the drive sleeve 15. The crushing head 10 and the wall 7 are provided with sealing and drag rings 23 and 24 which form the subject matter of my Patent No. 2,579,239.

Particular attention is called to the fact that the up per face of the wall 7 is provided with an outer lubricant channel 25 which is disposed just inward of the sealing and drag rings 23 and 24 and that an inner lubricant channel 26 is formed between the crushing head and the drive sleeve 15 and its bearing sleeves 16 and 17. A forced feed lubricant passageway 27 communicates with the inner lubricant channel 26 through a port 28 and lubricant under pressure is forced in the passageway 27 by any desired type of pump (not shown) through the medium of a supply pipe 29, which has communication with the passageway 27. Lubricant under pressure from the passageway 27 and annular channel 26 finds its way between the bearing sleeves 16 and 17, the inner surface of the wall 7 and the drive sleeve 15 and between the thrust bearing 18, the crushing head and the upper face of the wail 7. A drain passageway 30 extends through the wall 7 from the upper face thereof below the upper thrust bearing 15 to the oil reservoir defined-partly by the wall 7. Oil seeping around the thrust bearing 18 flows into this drain passageway 30 and communicating with the upper end of this passageway is a port 31 which opens out through the outer face of the wall 7 above the sealing and drag rings 23 and 2 1 and oil coming through this port flows around between the crushing head and the upper part of the wall 7 and collects in the channel 25. Communicating with this channel 25 is a drain passageway 32 which leads back to the oil reservoir. Means, which forms no part of this invention, is provided for lubricating the bearings for the drive shaft 19.

During the use of the gyratory crusher and the lubrication thereof, it has been found that the lubricant tends to escape radially quickly and flood the channel 25. The oil then tends to escape between the friction and drag rings 23 and 24- and insuflicient lubricant is supplied to the radial bearings 16 and 17.

In accordance with the present invention, I provide my sealing means M to eliminate this difliculty. The sealing means M consists of a resilient, preferably, steel ring 33 and the outer surface of the wall 7 above the outer channel 25 and the sealing and drag rings 23 and 24 is provided with a relative deep annular groove 34. The ring 33 is disposed directly below the port 31 and is of such a nature as to intimately engage the inner surface of the crushing head adjacent to the lower end thereof. This ring can be considered as of the piston ring type and during the gyratory motion of the crushing head the ring moves freely in the groove 34 and follows the motion of the crushing head. Hence, a seal is established between the wall 7 and the crushing head above the channel 25 and the ring functions to hold back the flow of oil above the channel, not only to prevent the flooding of this channel but to give the lubricant time to seep and find its way around the active faces of the bearing sleeves 16 and 17.

The ring can be formed in different manners, and in the present instance, the ring has been shown to be of the split type, and when the ring is sprung into the groove 34 the ends are brought into over-lapping relation, as is clearly shown in Figure 3 of the drawing. These ends can be secured together if so desired by means of a pin 35.

Changes in details may be made without departing from the spirit or the scope of this invention, but what I claim as new is:

1. In a gyratory crusher, a frame, a crushing concave on the frame, a driven sleeve, means for driving said sleeve, a crushing head, a portion of said frame partially surrounding the sleeve, a stabilizing bearing support between the sleeve and head, a bearing support between the sleeve and the portion of the frame surrounding the sleeve, friction and drag rings carried respectively by the head and said portion of the frame surrounding the sleeve having intimate rubbing contact, an inner lubricant channel between the head and the bearing supports, a forced feed passageway for lubricant having communication with the channel, and said mentioned portion of the frame having an outer channel for lubricant directly inward of said friction and drag rings, and a sealing ring disposed directly above the outer channel and the fricavsrnaa on the frame, a driven sleeve, means for driving said sleeve, a crushing head, a portion of said frame partially surrounding the sleeve, a stabilizing bearing support between the sleeve and head, a bearing support between the sleeve and the portion of the frame surrounding the sleeve, friction and drag rings carried respectively by the head and said portion of the frame surrounding the sleeve having intimate rubbing contact, an inner lubricant channel between the head and the bearing supports, a force fee pas ag way f r l br an ha ing omm nic on Wi h the channel, and s id mentione portion of the frame having an outer channel for lubric nt directly inward of said friction and drag rings, and a sealing ring engaging an inner surface of the crushing head and said mentioned portion of the frame having a groove slidably supporting said ring, said ring having free gyratory motion in said groove for following the gyratory motion of the crushing head and being disposed directly above the outer channel and the friction rings and below the inner channel establishing a sealing contact between the crushing head and said mentioned portion of the frame for holding back the flow of lubricant from the inner channel and the bearing supports to the outer channel, and said bearing support having formed therein a drain passageway communicating with the outer channel.

References Cited in the file of this patent UNITED STATES PATENTS