JPH04126701U - Lower bearing with lubrication function - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of the present invention is to eliminate the external supply of lubricating fluid to the lower bearing of a centrifugal thin film evaporator, for example, and provide it with a self-lubricating function. [Structure] The present invention includes a gutter 5 provided on the rotor blade 4, a bearing 9,
It consists of an upper threaded sleeve 7 and a lower threaded sleeve 8 provided on the upper and lower shaft portions of the shaft 10. [Effect] Conventionally, a lower bearing lubricating fluid supply device was required, but the present invention eliminates the need for such a supply device.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a lower bearing that has a lubrication function suitable for lower bearings such as centrifugal thin film evaporators. It is something to do.

0002

[Conventional technology]

Conventionally, as described in Japanese Patent Application No. 01-104455, the lubricating fluid for the lower bearing was It was injected from outside the can and discharged.

0003

[Problem that the idea aims to solve]

The above conventional technology is used to supply lubricating fluid to the lower bearing of a centrifugal thin film evaporator. This is done from outside the can, so the lower bearing lubricant supply system, which includes a pump, etc. It was necessary to

0004 The purpose of this invention is to use the raw material processing liquid as a lubricating liquid to provide a self-lubricating function. Ru.

[0005]

[Means to solve the problem]

In order to achieve the above purpose, a gutter is installed at the tip of the rotor blade to guide the raw material processing liquid to the bearing. In order to press the raw material processing liquid that has collected in the bearing into the sliding part of the bearing, the upper screw thread is installed. In addition, the raw material processing liquid that has finished its role as a lubricant collects at the bottom of the bearing. Therefore, a lower threaded sleeve was installed to allow this to be discharged outside the can.

[0006]

[Effect]

The raw material processing liquid is pressed against the shell wall surface by the rotary blades, forming a thin film. Descend. The raw material treatment liquid is poured into the bearing through a gutter installed at the tip of the rotor blade. This gutter The mounting angle is determined depending on the viscosity (fluidity) of the raw material processing liquid, and the flow gradient is arbitrarily determined. The raw material processing liquid that has flowed into the bearing has a small gap between it and the upper threaded sleeve. It is press-fitted into the sliding part of the bearing and acts as a lubricant. Raw material processing liquid coming out of the sliding part If you leave it as is, it will accumulate at the bottom of the bearing, so please use the lower tier provided to drain it. It is pushed out of the can by the same sleeve. In addition, the viscosity of the raw material processing liquid is low, and it If the property is fluid, cut the lower threaded sleeve in the opposite direction and push the liquid upward. By slightly raising the surface, it is also possible to prevent the film from breaking on the sliding part.

[0007]

【Example】

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. Raw materials supplied into main body 1 The processing liquid 2 flows down the barrel wall surface, with a portion having a slope provided at the tip of the rotor blade 4. Flows into trough 5. Since one end of the gutter 5 is near the lower bearing box 6, the raw material processing liquid 2 naturally enters the upper threaded sleeve 7 provided on the shaft. The upper threaded sleeve 7 has Multiple threads are cut, and by rotating, the raw material processing liquid 2 in the thread groove is lowered. push down toward The pressed-down raw material processing liquid 2 is applied to a small portion of the sliding parts of the bearings 9 and 10. It acts as a lubricant by passing through the gaps. Passing through the sliding parts of bearings 9 and 10 The treated raw material processing liquid 2 is then pushed out of the main body 1 by the lower threaded sleeve 8 and discharged. be done. This eliminates the need for an external lubricant supply device to the lower bearing 6. . In addition, since the raw material processing liquid 2 that has passed through the sliding part is discharged to the outside, the raw material in the main body 1 Carbon and the like from the lower bearing material will not be mixed into the processing liquid 2.

[0008]

[Effect of the idea]

According to the present invention, the raw material processing liquid is automatically taken into the lower bearing, which is not necessary in the past. The lubricating fluid supply device for the lower bearing that was previously used is no longer required, and the lower bearing can be fed into the raw material processing fluid. It also has the effect of preventing carbon from entering the material.

[Brief explanation of drawings]

FIG. 1 is a detailed sectional view showing an embodiment of a lower bearing of the present invention.

FIG. 2 is an overall sectional view of a centrifugal thin film evaporator to which the present invention is applied.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a sectional view taken along line BB in FIG. 2;

[Explanation of symbols]

1... Main body, 2... Raw material processing liquid, 4... Rotating blade, 5... Gutter, 6...
Lower bearing box, 7... Upper threaded sleeve, 8... Lower threaded sleeve, 9, 10... Bearing.

Continuation of front page (72) Creator Masaru Fujimoto Hitachi Te, 794 Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture Kuno Engineering Co., Ltd. Kasado Office Inside (72) Creator Seiji Nomura 794 Higashitoyoi, Kudamatsu City, Yamaguchi Prefecture Co., Ltd. Inside Hitachi, Ltd. Kasado Factory

Claims (1)

[Scope of utility model registration request] Claim 1: In a centrifugal thin film evaporator, a gutter is provided at the tip of the rotor blade for flowing the raw material processing liquid into the bearing part, and an upper threaded sleeve for pushing the raw material processing liquid downward is provided on the upper side of the bearing part, and the lower side of the bearing sliding part is provided. A lower bearing having a lubricating function, characterized by having a lower threaded sleeve for discharging raw material processing liquid to the outside.