Receptacles – Sectional – Extension
Patent
1999-01-07
2000-02-29
Moy, Joseph M.
Receptacles
Sectional
Extension
220 401, 220660, 220DIG13, B65D 2514
Patent
active
060298383
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a chip bin which is used within the pulp industry and is used for storing and possibly steaming chips for producing pulp.
The most common design of chip bins includes some form of tubular outlet device in order to ensure continuous discharge, such as for example the frequently used so-called "Vibra Bin". A disadvantage of such chip bins is that they are relatively expensive to maintain, among other things because of wear and the necessary maintenance associated therewith.
A chip bin which works entirely without moving parts is previously known through U.S. Pat. No. 4,958,741. If the climate allows, such a chip bin can function satisfactorily. The principle is based on the cross-section of the chip bin being reduced in stages down towards the discharge opening in a manner which eliminates the risk of bridge formation and consequently, with certain climatic prerequisites, continuous discharge can be ensured with such a construction.
The known device is based on the alternating use of oval and circular cross-sections. Such a construction leads to a disadvantage in that the oval cross-section is not optimal as far as strength is concerned. Furthermore, it is relatively complicated to construct and is therefore expensive. The aim of the present invention is to produce a chip bin which is based on a principle of functioning without moving parts but at the same time eliminates the abovementioned disadvantages of the known embodiment.
The solution is based on a chip bin comprising a feeding device, an upper container part, a discharge opening and, arranged between the container part and the discharge opening, a discharge zone, without moving parts, the discharge zone having a circular shape in any freely chosen horizontal cross-section, and on the fact that the cross-section of the discharge zone decreases from the container part (4) down towards the discharge opening (7), at least one section (3) of said discharge zone essentially having the shape of a truncated cone with a downwardly continuously decreasing circular cross-section, the centre point of which is continuously moved in relation to a vertical line, which is fixed with regard to the chip bin, in such a manner that said section (3) has a centre line which forms an acute angle (.alpha.) in relation to the vertical line.
DESCRIPTION OF THE FIGURES
FIG. 1 shows a diagrammatic side view of a chip bin according to the invention, and FIG. 2 shows the same embodiment in a view from above, FIG. 3 shows a preferred embodiment of a chip bin in a side view and FIG. 4 shows the same preferred embodiment in a view from above. FIGS. 5 and 6 show a chip bin which is somewhat modified in relation to the preferred embodiment, and FIGS. 7 and 8 show an alternative positioning of the sections in the outlet arrangement of a chip bin according to the invention.
DETAILED DESCRIPTION
A first embodiment of the invention will be described in greater detail below. FIG. 1 shows a side view of a chip bin (1) with a discharge zone (2, 3, 7) according to the invention. The discharge zone comprises a number of circular units (2a, 2b, 2c, 2d). The largest circular unit (2a) is located uppermost in the discharge part of the chip bin and the smallest circular unit (2d) is located at the bottom and thus itself also forms the discharge opening (7) from the chip bin (1). Between the larger and the smaller circular units, two further circular units (2b) and (2c) are located, the diameter of which decreases gradually in relation to the largest, upper unit (2a). Each circular unit is positioned in a non-centred manner in relation to the circular unit immediately above or below, see FIG. 2. Between each circular unit (2), there is a connecting element which essentially has the shape of a truncated cone (3), the horizontal cross-section of which is circular in any chosen section. Above the discharge part (2, 3) described above, a container part (4) is situated, the design of which may vary but which expediently has a circular cross-section and is upwardly
REFERENCES:
patent: 1331372 (1920-02-01), Popper
patent: 3565280 (1971-02-01), Rausing
patent: 4057163 (1977-11-01), Widart et al.
patent: 4452381 (1984-06-01), Freeman
patent: 4958741 (1990-09-01), Johanson
Derwent's abstract, No. 84-16278/03, week 8403, Abstract of SU, 1004212 (Forstman V A), Mar. 25, 1983.
Derwent's abstract, No. 91-49719/07, week 9107, Abstract of SU, 1570968 (Zurabishvili G G), Jun. 15, 1990.
Hansen Christen Gr.o slashed.nvold
Kylin Peter Christen
Olsson Sven-Erik
Fasth Rolf
Kvaerner Pulping AB
Moy Joseph M.
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