FR2499956A1 - Silo with extractor and vibrator feed - has sloping container base wall and feed door to lateral outlet - Google Patents

Abstract

The silo for granular or powdered products has an extractor fitted at the bottom of the receptacle, extending from the base (1) and with an inclined bottom wall (2). Under this is a vibrator (3), near a lateral output mouth (4). The silo mouth has an adjustable stopper (5) extended towards the exterior by an inclined emptying plate (21). Flexible parts are placed between the vibrator and supports. Part of the silo base (1) has a tapering section. There is a cover (22) over the emptying plate and a handle (7) for the stopper.

Description

Technical area
The present invention relates to perfections with sil @ s for granular and powdery products comprising an extractor located at the lower part of the container extending downwards 1. lower part of the silo and provided with an inclined bottom under which is fixed a vibrate @ ra @ v @ isinage of an outlet mouth practiced laterally at the lowest level of the round, said layer comprising in shutter register adjustable and extended outwards by an inclined emptying range, elastic cushions are provided between the vibrating part and supporting frame.

Problem.

 It is a question of storing granular and pulverulent products near the point of use and of delivering them in a controlled quantity and, preferably, on a wide sheet. when 'we want it.

State of the prior art and drawbacks.

The state of the art in the matter is clearly stated in the French patent 1,310,956 of January 17, 1962 in the name of Jean GAUCET. This patent relates to a generally cylindrical device with vertical axis which comprises, at the base of the inclined bottom, an outlet mouth (11) of relatively small section with a shutter register (15) q @ i adjusts the mouth height (11). The main drawbacks of this device are that the pulverulent products essentially form vo @ tes inside the cylindrical part and that the device locks up when it is not completely emptied and that the throttle at the setting impedes the flow of products. We can also report the impossibility of spreading the stored product
over a large area.

 The present invention is intended to remedy these drawbacks.

Statement of the invention.

 The invention is characterized mainly by the fact that it combines a) at least a lower part of the silo having a section which widens from top to bottom and laterally towards the outlet mouth which has the width ma @@ - mum of the device and is followed by a range of the same width; b) a cover covering the entire emptying range and the shutter register, leaving only the emptying area at the @out of the emptying area a slit with a strict section @ @ lay and @@ in; c) a rotary agitator @ @ è horizo @@@ l agise and @@@ swim of the inclined bottom d @ reciplent.

 Depending on the case, the shutter register is either of the oscillating type with upper horizontal axis, so in the form of a rotary alveolar distributor @ zontal.

 As for the rotary agitator it can be con @@@ - killed by an axis carrying radial lines or by several spokes arranged at the two ends of the exe, said spokes being connected, at their ends, by cross members clearly parallel to the axis.

 The entire silo is suspended on elastic supports. This suspension can be understood either by supports working in traction, or by supports working in compression, such as elastic cushions.

 According to a preferred embodiment, the sil are horizontally divided into two parts connected by a flexible and waterproof cuff, the upper part, closed on the top being fixed while the lower part is subjected to vibraticns and is hung on elastic cushions or supports.

Solution to the problem, advantages and industrial result.

 The silo of the invention completely eliminates the formation of voids inside so that the flow of products is very regular. If ever voids were established, the agitator would have done to reduce them. in addition, the drain range make @ nt all the wide @ r of the device allows to sprinkle the product regularly following-nt a large width. The regularity of dusting is improved by the rotary distributor which makes it possible to obtain dosages with an accuracy of plus or minus 5,.

 The fact of completely closing the device and providing for the apotage of the damper shutter register as well as of the connection sleeves at the places where the device is separated in two, makes it possible to avoid any pollution by powdery products. and limit their losses. This tightness of the device also makes it possible to @ llmenter it by pneumatic transport.

 It should be pointed out that the vibrate @ r is in the vicinity of the drainage range and allows great regularity in flow.

 The invention will be better understood using the following description which gives a nonlimiting example of practical implementation and which is illustrated by the drawings Jonts.

Brief description of the figures.

Sns these drawings
FIG. 1 is a schematic view in vertical section of the apparatus along II of FIG. 2, the right part of the drawing representing the apparatus suspended on elastic supports while the left part represents the same apparatus resting on elastic cushions;
Figure 2 is a plan view of the apparatus of Figure 1;
Figure 3 is an elevational view of another version of the apparatus forming a monobloc silo the upper part of which rests on elastic cushions; ;
Figure 4 is a schematic elevational view of another version of the device resting at its upper part, on a rigid frame while the lower part is resiliently supported at the upper part, the two parts being separated by a elastic seal preventing transmission of vibrations to the upper part;
Figure 5 is an axial vertical section of another version of the apparatus of the invention comprising a rotary agitator with a horizontal axis and a rotary alveolar distributor with a horizontal axis.

Description of some embodiments.

 ne device of the invention consists of a lower container (1) which has any circular, square section. rectangular or other and which has the particularity of having an increasing section going from the top to the bottom, that is to say that it has a draft identified by the angle "a" an increasing section going towards the exit (4 ) materialized by the angle "b" (figure 2). The container (1) has an inclined bottom (2) towards the outlet (4), under which is fixed a viorator (3). The outlet (4) therefore has a width greater than that of the lower part of the container as well as that of any other part of said container (1) and of the parts which possibly overcome it, as will be seen below.

 The section of the outlet (4) is adjusted in height by an oscillating shutter register (5) around an axis (6) actuated by a control lever (7) which can be immobilized at the desired position on a blocking sector (8).

 As the entire container (1) vibrates, it must be supported by elastic means which are compression means (25) (left part of FIG. 1 resting on a floor (26) or traction means ( 27) (right part of FIG. 1) hung on a ceiling (28). The compression means (25) retains the container (1) by a console (29) while the traction means (27) is hooked to the container (1) by a console (30).

 The container (1) also pet (Figure 3) to be bolted (31) follow a seal tight to a vibrating silo (9) which rests on the frame (14) (15) by means of the consoles (32), (33) by interposition of elastic pads (11) and (12).

 Another solution consists in suspending the container (1) from a fixed silo (10) which rests on the frame (16), (17) directly by the consoles (34), (35).

The container (1) is suspended from the fixed silo (10) by hooks (18) and (19) identical to the hooks (22) which have been described in the French patent 1 310 956 mentioned above and which are attached to the two parts by means of elastic cushions (24) (these latter marks (22) and (24) correspond to those of FIGS. 1 and 3 of French patent 1,316,956). Unlike @ previous patent, the seal between the container (1) and the fixed silo (10) is ensured by a waterproof el @@ t @@@ sleeve (20).

 The outlet (4) is extended by a @ pl @e @@ drain (21), rectilinear, horizontal in @ es @@ "of @a width and inclined in the direction of flow of the p @@@ @it - which has the role of distributing the produl @ q @ i evenly. To prevent dust propagation, pollution and loss of product, an @@ pota @ (22) is provided which covers the outlet (4) and the range (21). The flow regularity is considerably improved by the presence of a rotary alveolar distributor (24) Just at the outlet (4). The flow continuity and the regular advancement of the pulverulent products are also improved by a rotary agitator (23) which is composed of an axis (36) with arms (37) which can consist of simple teeth or even consist of an arm at each end of the axis (36) the arms being connected at their ends by crosspieces substantially parallel to said axis (36).

Claims (5)

 1. Improvements to silos for powdery granule @ xo products comprising an extractor located at the bottom of the container extending downwards the lower part (1) of the silo and provided with an inclined bottom (2) under which is fixed a vibrator ( 3) in the vicinity of an outlet layer (4) formed laterally at the lowest level of the bottom, said mouth (4) comprising an adjustable oturation register and being extended outwards by a drainage area (21) inclined, elastic cushions being provided between the vibrating part and the support frame, characterized by the fact that a) is combined a) at least one lower part (1) of the silo having a widening section from top to bottom and laterally towards the outlet mouth (4) which has the maximum width of the device and is followed by a drain area (21) of the same width; b) a cover (22) covering the entire emptying range (21) and the shutter register (5) leaving at the end of the said emptying range (21) only a slot of strict section necessary for the flow powder or grain c) In agitate @ r rotating (23) with a horizontal axis acting in the vicinity of the inclined bottom (2) of the container.  at. Improvements to silos, as defined in 1 claim 1, c a r a c t e r i s ed by the fact that q e @@ shutter register (5) is of the oscil l @ nt type with axis ... rizonital (6) higher.  ). Improvements to silos, as defined in claim 1, this is due to the fact that the shutter register has the form of a rotary alveolar distributor (24) with a horizontal axis.  4. Improvements to the silos, as defined in either of claims 2 or 3, c a r a c t é r i s s in that the rotary agitator (23) comprises radial fingers (37).  5. Improvements to silos, as defined in either of claims 2 or 3, characterized in that the rotary agitator (23) consists of several spokes at the ends of the axis (36), said spokes being connected at their ends by crosspieces substantially parallel to the axis (36).  6. Improvements to silks, as defined in claim 1, c r a c t e r i s ed in that the whole silo rests on elastic cushions (11), (12).  7. Improvements to silos, as defined in claim 1, which is because the whole of the silo is suspended from elastic supports (27).  o. Improvements to silos, as defined in claim 1, characterized by the fact that said silo is divided horizontally into two parts (1), (10) separated mechanically put together by a flexible and waterproof cuff (20) fixed tightly to each of the two parts (1), (10) of the silo, the upper part of the silo, (10), closed on top, being fixed while 1 lower part (1) is subjected to vibrations and is attached to elastic cushions or supports (18), (19).