JPS6244969B2 - - Google Patents

Description

Detailed Description of the Invention The present invention is applicable to operations such as mixing, humidifying, stirring, kneading, etc. of dehydrated sludge, incineration dust, collected dust, dust mixed with a solidifying agent such as cement, and sticky powder such as wheat flour. The present invention relates to a self-cleaning method and device for a conveyance mixer, which has a cleaning function of scraping off kneaded material adhering to the blades and rotating shaft of the conveyance mixer.

In conventional devices of this kind, the rotating blades rotate independently without interfering with each other, so if the kneaded material adheres to the surfaces of the blades or the rotating shaft, and if the device is stopped for a long time, the kneaded material may It dries and solidifies and sticks to the surface of the blades and rotating shaft, causing logs and significantly reducing work efficiency. Therefore, it is necessary to scrape it off and clean it by washing with water every time the machine is stopped, which requires a lot of time and maintenance. The current situation is that it requires a lot of effort.

The purpose of the present invention is to automatically scrape off the kneaded material adhering to the surfaces of the blades and rotating shaft during operation of the device, thereby enabling self-cleaning, thereby preventing the adhesion and solidification of the kneaded material, thereby improving the performance of the conveying mixer. The purpose is to provide a self-cleaning method and device for a conveyor mixer that can ensure maintenance.
The gist of the invention is that the blades are erected in a screw-like manner offset in the axial direction along the circumferential direction of the rotating shafts arranged in parallel, and the blades of the rotating shafts are rotated so that one of the blades becomes one. In a conveying mixer configured such that the tip of the shaft substantially contacts the other shaft, both rotating shafts are rotated at a rotation ratio of N-1 to N (2≦N≦6), for example, 1:2, 2:3, A self-cleaning method for a conveying mixer characterized by rotating at a rotation ratio of 3:4, 4:5, or 5:6 and self-cleaning by changing the relative phase of the blades; A conveyor mixer is constructed in which the blades of a rotating shaft are arranged vertically in the form of a screw screw along the circumference so that the tip of one blade comes into approximate contact with the other shaft as the shaft rotates. It is a self-cleaning device.

Hereinafter, the structure of one embodiment of the present invention will be described with reference to FIG. 1. The rotation ratio of the rotating shafts 1 and 2 arranged in parallel is set to 1:1.25, that is, the above-mentioned 4:5. On the shafts 1 and 2, rods 3a and 3b are erected in the screw direction along the circumferential direction at predetermined equal intervals and shifted in the axial direction. Accordingly, the tip of one rod is configured to substantially contact the shaft of the other.

Next, to explain the function and effect based on the above example, since the shafts 1 and 2 have inconstant speeds, for example, when they are rotated at a rotation ratio of 1:1.25 as in the example above, the relationship will be examined. For this reason, the rods 3a and 3b of both shafts 1 and 2 are simplified as shown in FIG.
Looking at the rotation of both shafts 1 and 2 and the positional relationship of rods 3a and 3b, we can see that if shafts 1 and 2 are rotated in the direction of the arrow, they will gradually return to their initial positions as time passes. At position A, rod 3a is at point a on axis 2; at position D, rod 3b is at point d on axis 1; at position E, rod 3a is at point e on axis 2; at position F, rod 3b is at point e on axis 1. At point f, at position G, rod 3
When in position H, rod 3b is at point h on axis 1; when in position I, rod 3a is at point i on axis 2.
At point J, rod 3b is at point J of axis 1,
At position K, rod 3b is at point k of axis 1, and at position L
At this time, the rods 3a return to the initial position A and come into contact with the point a of the shaft 2, and thereafter each rod repeats the same operation, thereby scraping off countless places between the rods and around the shaft. The scraped residue is carried away by the conveying action of the kneaded material, resulting in a complete cleaning operation.

As is clear from the above description, the present invention performs self-cleaning by sequentially scraping off the adhesion of the kneaded material on the rotary shaft by rotating the rotary shaft during operation of the device, so cleaning is performed when the device is stopped and after work is completed. This eliminates the need for this system, which not only greatly contributes to labor savings in maintenance and maintenance, but also ensures the performance of the conveyor mixer.

[Brief explanation of the drawing]

FIG. 1 shows the configuration of one embodiment of the present invention.
FIG. 2 is a simplified explanatory diagram showing the progress of operation, and FIG. 3 is an explanatory diagram showing a contact corresponding portion of the rotary shaft with a rod.

Claims (1)

[Claims] 1. The blades are arranged in a screw-like manner along the circumferential direction of the rotating shafts arranged in parallel and are erected so as to be shifted in the axial direction, and as the blades of the rotating shafts rotate, the tip of one blade almost comes into contact with the other shaft. In the conveying mixer configured as shown in FIG. A self-cleaning method for a conveyor mixer, characterized by: