Continuous kneading machine having at least one rotating shaft a

Details Continuous kneading machine having at least one rotating shaft a Continuous kneading machine having at least one rotating shaft a

1998-02-23

1999-03-30

Cooley, Charles E.

Agitating

With specified discharge means

With rotatable or oscillatable stirrer

366298, 366301, 3663261, 3663281, B01F 704, B01F 1502

Patent

active

058879765

DESCRIPTION:

BRIEF SUMMARY
TECHNICAL FIELD

This invention relates to a kneader for continuously kneading and agitating powder and granular material by paddles mounted on one or more rotating shafts disposed horizontally in an oblong casing.


BACKGROUND ART

To secure an adequate degree of kneading or agitation in the conventional continuous kneader, powder and granular material of the largest amount possible must stay in the kneader, considering limited length and processing capability. To this end the supply of a powder and granular material to be fed to the raw-material-supplying part of the kneader should correspond to its processing capability. An excessive flow of the processed material, which occurs especially around its discharge outlet, also needs avoiding.
Regarding the supply of a constant amount of raw material, a variable-speed, constant-supply device is provided, or a fixed gate is provided to supply the raw material from the top of its casing. Regarding the excessive flow of the processed material, a so-called "return paddle," wherein the feed angle of the paddle is reversed, is provided around the discharge outlet, or a dam gate is provided at its discharge part.
The conventional kneader has drawbacks in that when a self-curing material is kneaded, the kneading efficiency is hindered by the kneaded material that adheres to the paddles and that cures thereon. To solve this problem an apparatus having a self-cleaning effect was disclosed in Japanese Patent Publication No. 62-44969.
However, those remedies proposed above still have some drawbacks. That is, the constant-supply device is expensive. The fixed gate has disadvantages in that its possible shapes are limited since any interference with the rotating shafts and paddles must be avoided, which results in a narrow range of adjustment, and in that it alone is unable to prevent excessive amounts of highly fluid powder and granular material from being fed into the kneading part, which results in an irregular kneading. Additionally, since none of the methods of providing a return paddle and of using the dam gate can completely discharge the processed material in the machine, a problem occurs in that the residual material fixedly adhering to the shafts and paddles hinders the machine from being easily restarted.


DISCLOSURE OF INVENTION

This invention, which is intended to solve the above problems, aims to provide a machine that can continuously knead and discharge a constant amount of fed powder and granular material without the need of an extra device, and which can knead and agitate the fed material while controlling the amount of material being processed, so as to discharge all of the processed material.
To solve the above problems, this invention of a machine that continuously kneads comprises an oblong casing having a supply inlet at one end and a discharge outlet at the other end, and one or two rotating shafts disposed in the casing, on which shaft kneading paddles are mounted. The machine is characterized by C-shaped adjusting plates whose radii substantially equal the distance from the axis of the rotating shaft to the bottom of the kneading part of the casing. Each of the plates has a given notch, and they are mounted on the shaft at the boundary between the supply part and the kneading part of the casing and at a position just in front of the outlet, respectively. Thus, a constant amount of powder and granular material can be fed into the kneading part from the feeding part, and the processed material can be completely discharged without any excessive amount of it being discharged from the kneading part.
In another embodiment of this invention, a sliding plate of a shape identical to that of the adjusting plates is placed over one or both of the adjusting plates, so that the sliding plate can be adjustably slid around the rotating shaft in the circumferential direction.
In a further embodiment of this invention, the ratio of the rotational speeds of the two rotating shafts is set at 6:7, and the kneading paddles are mounted on the low-speed and high-speed

REFERENCES:
patent: 3293117 (1966-12-01), Pennington, Jr. et al.
patent: 3689035 (1972-09-01), List
patent: 3730486 (1973-05-01), Hayashi et al.
patent: 3823921 (1974-07-01), Brennan, Jr. et al.
patent: 4589215 (1986-05-01), Iwasaki et al.
patent: 4887911 (1989-12-01), Miyaji

Affiliated with

Also associated with

Rating

Continuous kneading machine having at least one rotating shaft a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Continuous kneading machine having at least one rotating shaft a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous kneading machine having at least one rotating shaft a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1208262