Scraping device

Details Scraping device Scraping device

2003-03-27

2004-07-27

Hess, Douglas (Department: 3651)

Conveyors: power-driven

Conveyor having impinging fluid to feed, shift or discharge...

Having cleaning means

C198S499000

Reexamination Certificate

active

06766896

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a scraping device, more particularly to a scraping device adapted for cleaning a conveyer belt.
2. Description of the Related Art
Referring to
FIG. 1
, a conventional scraping device
2
is shown for cleaning a conveyer belt
10
of a conveyer
1
. The conveyer belt
10
circulates in a direction indicated by the arrows shown in the figure, and includes an upper section
101
and a lower section
102
. The scraping device
2
includes a fixing base
21
mounted under the conveyer belt
10
, a positioning block
22
removably mounted on the fixing base
21
, and a scraping member
23
connected to the positioning block
22
and abutting against the lower section
102
of the conveyer belt
10
. Material (such as cement, sand, or the like) adhered on the conveyer belt
10
can be scraped by the scraping action of the scraping member
23
on the lower section
102
of the conveyer belt
10
.
However, the aforesaid scraping device
2
has the following shortcomings in practice:
1. The conveyer belt
10
is liable to vibrate during operation. If the vibration occurs at the part of the conveyer belt
10
passing across the scraping member
23
, the material adhered on the part of the conveyer belt
10
will not be scraped. Therefore, the scraping efficiency of the aforesaid scraping device
2
is not sufficient.
2. The scraping member
23
is liable to be abraded due to the continuous scraping action. Therefore, it: is necessary to replace the scraping member
23
frequently, which in turn results in increased costs.
3. The aforesaid conventional scraping device
2
can not be used for cleaning a conveyer belt operating in a reversible direction. If the conveyer belt
10
circulates in a direction counter to the direction shown by the arrows in
FIG. 1
, the scraped material is liable to accumulate between the scraping member
23
and the positioning block
22
, which will result in damage to the conveyer belt
10
due to the friction between the conveyer belt
10
and the accumulated material.
Referring to
FIG. 2
, another conventional scraping device
3
is shown to include a base
31
and a rotary scraping member
32
journalled on the base
31
. The rotary scraping member
32
includes a plurality of scraping brushes
33
mounted along an axial direction of the rotary scraping member
32
and spaced apart from each other. The scraping device
3
is electrically actuated to scrape the material adhered on conveyer belt
10
through the scraping brushes
33
.
However, since the scraped material is liable to be suspended in air during the scraping operation, the recovery efficiency of the scraped material is not sufficient. Moreover, since the scraping device
3
is actuated by electrical power, it consumes energy and is not economical. Additionally, since there are spaces between the scraping brushes
33
, it is difficult to scrape all of the material from the conveyer belt
10
efficiently. Furthermore, if the material intended to be scraped is moist, the material is liable to adhere to each other and to cumulate in the spaces between the scraping brushes
33
. Therefore, the conveyer belt
10
is liable to be damaged, and the scraping efficiency of the scraping device
3
is lowered.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a scraping device which enhances the efficiency for cleaning a conveyer belt.
According to this invention, a scraping device, which is adapted for cleaning a conveyer belt having an upper forwarding section and a lower returning section, includes an elongated positioning member and a plurality of scraping plates.
The elongated positioning member is mounted under the lower returning section in a transverse direction transverse to a longitudinal direction of the conveyer belt. Each of the scraping plates includes a mounting part mounted on the positioning member, and at least one web part having a free edge distal from the mounting part. The web part extends between the mounting part and the free edge, and is inclined with respect to the transverse and longitudinal directions. The web part further has a top scraping edge adapted to scrape the conveyer belt.


REFERENCES:
patent: 265528 (1882-10-01), Mathews
patent: 3202260 (1965-08-01), Wolf
patent: 4529084 (1985-07-01), Zhang
patent: 4850474 (1989-07-01), Schwarze
patent: 5014844 (1991-05-01), Anttonen
patent: 5082106 (1992-01-01), Schwarze
patent: 5518107 (1996-05-01), Schwarze
patent: 5573102 (1996-11-01), Puchalla
patent: 5865294 (1999-02-01), Betz
patent: 6213287 (2001-04-01), Juracko
patent: 6293545 (2001-09-01), Hanks et al.
patent: 6354428 (2002-03-01), Gibbs et al.
patent: 6581754 (2003-06-01), Law
patent: 6638062 (2003-10-01), Davidson

Affiliated with

Also associated with

Rating

Scraping device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Scraping device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scraping device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3194813