DE2313067A1 - SILO FOR SCHUETTGUT - Google Patents

Description

Dipl-lng. H. Lamprecht

8 Munich 5

ComelluMtraB 42

Meyer MUhlenbau AG., Solothurn (Switzerland)

Silo for bulk goods

The invention relates to a silo with a downwardly tapered discharge shaft and one therein which is independent of the shaft walls arranged device to facilitate the discharge of bulk material tending to bridge and a method for operation of the silo.

As is well known, depending on its physical properties, the air humidity and the nature of the silo wall, especially in the discharge chute, bulk material tends to form bridges, which the Can inhibit discharge of the bulk material or bring it to a complete standstill. There are many ways to counteract this disadvantage Devices have been used, such as vibrators, agitators, discharge screws or wheels or even guide bodies only arranged in the discharge shaft. The use of such agents can be very expensive and cannot reliably build bridges in the bud to prevent, because the action is often too localized and does not favor the flow of debris in large areas of the discharge shaft.

The present invention is intended to take these circumstances into account. The silo according to the invention is characterized by this from the fact that the device has a guide body for the bulk material, which is elongated in the general discharge direction and on the circumference with a plurality of distributed, laterally protruding baffles is provided, one of which

309839/0486

Number in the discharge / direction and one radial each Cherish direction to the same particular plane.

In the method according to the invention for operating the silo the guide body is set in vibration and shifted in the discharge direction.

Such a displacement of the guide body can take place in order to determine its position resulting in an ioptimal execution, or continuously or periodically to prevent or eliminate bridging at different heights of the silo contents.

Embodiments of the subject matter of the invention are then send explained in more detail with reference to the accompanying drawing. Show it

1 shows a vertical section through the lower part of a silo with a device arranged in the discharge funnel for facilitating the bulk material discharge;

Fig. 2 is a plan view of Flg. Ij

3 shows a variant of the device in elevation, and FIG. 4 shows a plan view of FIG. 3.

In the discharge funnel 1 of the bulk material silo 2 according to FIGS. 1 and 2 is, regardless of the shaft walls, a device to facilitate the bulk material discharge is arranged by being attached to wire ropes 12 is suspended from the upper end of the silo shaft, not shown. This device has a cylindrical in which general discharge direction elongated guide body 3, the serves to accommodate an electric vibrator and is provided on the circumference with four crosswise and detachable arms 4, which Carry flat guide vanes 5 and 6. Also one on the guide body attached helmet 7 has four flat guide vanes on its conical surface 8, which are arranged offset by 45 ° with respect to the arms 4. The LeitflUgel 5 are in a frame resulting in the arm 4 inclined upwards inwards and coincident with one another at an angle to the vertical arm level. The remaining guide vanes 6 and 8 are arranged radially and in the discharge direction. The arm frame preferably projects sideways over the guide vanes 6 and 8.

At the lower end of the guide body 3 a sword 10 formed by four crosswise arranged, vertical guide vanes 9 is screwed. At one's discretion, it can be attached with its wings offset by a pitch angle with respect to the arms 4 and is sufficient expediently up to directly above the discharge opening 11 of the silo.

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Kit, these wings 9 protrude sideways at their upper outer end the scope of the guide body 3 before.

If an electric vibrator is mounted in the guide body 3, so its vibrations are transmitted via the guide body to the arms 4 and LeitflUgel 5 and 6 as well as to the helmet 7 and its LeitflUgel 8 and transferred to the sword 10 and thus over a large Area of the content of the outlet shaft 1 up to close to the shaft wall spread. Depending on the installation position of the vibrator in the guide body, the vibration is in the discharge direction or in in another desired direction. The surfaces of the arm frames and wings, especially the transverse ones, have the effect of doing this Surfaces and protruding edges a continuous dissolution of possible compression points in the bulk material and the sword helps to keep the movement of debris going.

The device described is advantageous in the discharge direction ZrB. Can be raised and lowered mechanically or pneumatically, so that the vibration also occurs at different heights of the silo contents can be brought into effect. In particular, this way

elne
se the / optimal discharge resulting height of the device for different types of debris can be determined in practice. The lifting and lowering device can be arranged in connection with the wire ropes 12 or with the guide body 3.

In a simplified embodiment of the device according to 3 and 4, the guide body 13 is of a prismatic shape which is elongated in the general, vertical discharge direction. To the four side walls of the guide body, a rectangular LeitflUgel 14 is detachable in the respective vertical center plane of the same mounted, which can be provided with an opening 15 or solid. On the guide body 13 is a helmet 16 in the form a truncated pyramid is placed on the edges of which a vertically standing LeitflUgel 17 is arranged. In the guide body is the vibrator 18 is mounted.

The guide body can be designed to be sufficiently slim so that it can be passed through without arms 4 or guide vanes 14 and sword 10 Access opening of existing silos can be introduced. The arms or LeitflUgel and the sword can also be individually sized to be introduced through the manhole. In the silo, then on the guide body at its prepared fastening points all parts belonging to the device are installed.

309839/0 * 86

Claims (8)

Patent attorney Dlpl-Ing. M. La ^ ;: right ο ο ι Q η ς 7 ε Munich 5 " ^{aJIJIO /} CornelluistraBe 42 F & uent < '' Silo with a downwardly tapered discharge shaft and a device arranged depending on the shaft walls to facilitate the discharge of bulk material tending to bridge, characterized in that the device has a guide body (3; 13) for the bulk material which runs in the general discharge direction is elongated and is provided on the circumference with a plurality of distributed, laterally projecting guide surfaces (5, 6, 8j 14, 17), a number of which are in the plane determined by the discharge direction and a radial direction to the same plane. 2. Silo according to claim 1, characterized in that the largest circumferential width of the guide body (3; 13) per se is slightly smaller than the width of a "Siloeinstiegöff mn? Irt ¹ ^ dd ^ s ^ the guide surfaces (5, 6, 8; 14 , 17) are detachably attached to the guide body (3j 13). 3. Silo according to claim 1 or 2, characterized in that on the guide body (3; 13) or in connection with its suspension means (12) a lifting and 3enkvorrichtung is attached, which allows its displacement in the discharge direction. 4. Silo according to claim 1 or 2, characterized in that the guide body predominantly has the shape of a straight frism (13) or cylinder (3), whose longitudinal sides or cylinder axis extend or extends in the discharge direction. 5. Silo according to claims 1 or 3 and 4, characterized in that that the guide body (3; 13) as an upper end has upwardly tapering attachment (7; 16) which is provided with laterally projecting guide surfaces (8, · 17). 6. Silo according to claims 1 or 3 and 4, characterized in that that the guide body (3) is a lower end formed by guide surfaces (9) arranged in a cross or star shape Sword (1.0) has. 7. Silo according to claims 1 or 3 to 6, characterized in that that the sword (10) is rotatably attached to the rest of the guide body (3). 8. The method for operating the silo according to claim 1, characterized in that the guide body (3 $ 13) is set in vibration and is moved in the discharge direction. 3 0 Ii θ 3 9 / iU 8 S