RU2419487C2 - Vibrating cone crusher - Google Patents

Abstract

FIELD: process engineering.

SUBSTANCE: invention relates to cone-type fine and medium crushing devices. Proposed crusher comprises housing with external cone, spherical bearing support for inner crushing cone with shaft. Unbalanced vibrator is fitted on said shaft via bearing and provided with thrust bearing suspended to the spherical bearing support. Said bearing incorporates shaft seal arranged at its top. There are orifices arranged under said seal to withdraw lubrication from the bearing. Lubrication is fed via orifices made in inner con body and its shaft.

EFFECT: reliable operation of bearing.

2 dwg

Description

The invention relates to cone crushers for medium and fine crushing. It can be most widely used for processing ores and building materials.

Vibratory cone crushers are increasingly used in industry, since their crushing degree is 5 times higher than traditional eccentric crushers, and specific energy consumption is 2 times lower. However, the reliability of these machines is still low due to the high bearing load of the drive unbalanced vibrator and insufficient lubrication of this bearing.

Known cone vibration crusher (US patent No. 4452401 dated 05/05/1984), comprising a housing with an outer cone and a spherical support for the inner cone with a shaft to which a bearing with an unbalanced vibrator is articulated.

The disadvantage of the crusher according to this invention is the unreliability of the lubricant supply to the unbalance bearing, which is carried out through a spherical support, the body of the cone and its shaft. Due to significant leaks of the lubricant in the spherical bearing, its supply to the unbalance bearing becomes intermittent, which leads to a rupture of the bearing wedge layer of oil in the unbalance bearing and, accordingly, to its premature failure.

Known for the prototype cone vibration crusher (US patent No. 4592517 from 06/03/1986), containing a housing with an outer cone, a spherical support for the inner cone with a shaft and mounted on it with a unbalanced vibrator pivotally mounted to the spherical bearing of the bearing.

Known crusher has a significant drawback - low reliability of the bearing unbalanced vibrator. This is because the lubricant entering the cavity formed by the spherical support, the body and shaft of the inner cone, as well as the hinge of the bearing, experiences substantial hydraulic resistance from the centrifugal force of the latter.

Under such conditions, the lubricant generally falls on the spherical support and the joint, and the bearing overheats and fails.

The objective of the present invention is to ensure the reliability of the bearing, even in difficult operating conditions, when the crusher operates in the regime of fine grinding, for example, upon receipt of cement.

The problem is solved in a crusher comprising a housing with an outer cone, a spherical support for the inner cone with a shaft and mounted on it using a bearing pivotally mounted to the spherical support with an unbalanced vibrator, in which, in accordance with the invention, the bearing is provided with a shaft seal in its upper part and under the seal - holes for the removal of grease from the bearing, the means of supply of which to the bearing are made in the form of holes in the body of the inner cone and in its shaft.

Figure 1 shows the proposed cone vibratory crusher in longitudinal section. Figure 2 - node a of figure 1.

The crusher contains a housing 1 with an outer cone 2, a spherical support 3 for the inner cone 4 with a shaft 5 and mounted on it using a bearing 7 suspended on a hinge 6 to a spherical support 3 with an unbalanced vibrator 8 mounted thereon, connected by a transmission 9 to a drive motor 10 .

In the body of the inner cone 4 and in its shaft 5, holes 11 and 12 are made, supplying lubricant to the bearing 7 from the receiver cavity 13, into which it is supplied through the hole 14 of the housing 1.

The bearing 7 in its upper part is provided with a seal 15, under which in the bearing housing 7 are made radial holes 16 for removing grease from the bearing 7, which comes under pressure from the lower zone of the mentioned bearing 7.

Crusher works as follows. Before starting, the supply of lubricant is turned on, which enters through the hole 14 into the receiver cavity 13, and from it to the spherical support 3, to the hinge 6 and the lower zone of the bearing 7 through the holes 11 and 12. The seal 15 prevents the lubricant from entering the upper zone of the bearing 7, therefore the grease rises along the bearing 7 to the holes 16 and is discharged into the crusher drain case. The unbalanced vibrator 8 receives rotation through the transmission 9 and develops a centrifugal force, causing the inner cone 4 to make gyration movement on the spherical support 3. The material entering the cavity formed by the cones 2 and 4 is subjected to grinding. The centrifugal force of the bearing 7 creates a pumping effect that helps to tighten the lubricant on the working surface of the bearing. In combination with the pressure of the oil pump, this phenomenon contributes to a significant increase in the reliability of the bearing 7, and therefore provides a high degree of crushing.

Thus, the claimed distinctive features provide a solution to the problem.

Claims (1)

Vibration cone crusher comprising a housing with an outer cone, a spherical support for the inner cone with a shaft and mounted on it with a bearing pivotally mounted to the spherical support with an unbalanced vibrator, characterized in that the bearing is provided with a shaft seal in its upper part and under the seal - holes for removing grease from the bearing, the means of supplying which to the bearing are made in the form of holes in the body of the inner cone and in its shaft.

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