RU90764U1 - DEVICE FOR STRAWING BIG BAGS WITH BULK MATERIALS - Google Patents

Abstract

A device for unloading big bags with bulk materials, consisting of a vibrating cone funnel with a seal and a tetrahedral knife for cutting big bags, a frame made in the form of four support racks, a removable traverse designed for transporting and installing big bags on support racks, characterized in that it further comprises spring shock absorbers installed in the upper parts of the support struts, the shock absorbers being compressed under the weight of the full big bags and unclenched as the big bags are unpacked.

Description

The technical solution relates to the glass industry and can be used in processes associated with the preparation of various multicomponent mixtures in the production of building materials and other industries.

For the preparation of a glass charge in the manufacture of various glass products, raw materials (soda, sulfate, alumina, feldspar, dolomite flour, coal, etc.) are often used, delivered in big bags or soft containers with a single capacity of 0.8 ... 1 m ³ . Unloading materials from big bags and feeding them to the feed hoppers of the dosing and mixing lines is carried out using lifting and transport mechanisms, vacuum transport and various conveyor systems.

In most cases, when unloading big bags, hoists or crane beams are used, with which big bags are brought to the unloading position (usually this is a receiving funnel or loading hatch of the supply hopper). At the unloading position, an incision is made in the bottom of the big bag manually. At the same time, the maintenance staff monitors the process of expiration of material from the big bag and, if necessary, activates unloading with various devices. Considering that the big bag, as a rule, is two-layer and consists of an inner plastic bag and an outer fiberglass bag, the manual incision operation is quite laborious and inconvenient.

A device for unloading bulk materials from big bags containing a receiving funnel with a knife and a bag filter [1]. When unloading a big bag with the help of a hoist or other lifting and transport mechanism, it is brought to a receiving funnel, lowered onto a knife and held in suspension until the end of unloading.

The disadvantage of this device is that as you unload the big bag you need to raise it a bit so that the material under the weight of its weight is concentrated in the place where the big bag was cut. Another disadvantage is the need to constantly hold the big bag with the hoist in suspension. At the same time, using a hoist or a crane beam for feeding materials to other consumables can only be done one at a time, which reduces the performance of the big bag unloading process.

The closest technical solution to the claimed is a device for unloading big bags, containing an additional frame, adjustable in height, and a crosshead, to which the unloaded big bag is previously attached [2]. The presence of the traverse allows you to use an electric forklift, hoist or crane-beam after installing a big bag for unloading to perform other lifting operations. Depending on the dimensions of the big bag, the installation height of the traverse on the support posts is adjustable and discretely changes in increments of 200 mm. For intensive outflow of material from the big bag, vibrators are used mounted on the cone funnel of the device.

However, in this device, at the end of the unloading operation, part of the material remains at the edges of the big bag and is not unloaded from it without operator intervention. For complete unloading, it is necessary to raise the big bag, since when it is lifted, it is pulled out, and the remaining material is poured from it through a cut hole into the feed hopper.

The purpose of this technical solution is to reduce dusting and complete unloading of material from the big bag at the end of the unloading operation, carried out without the participation of the operator and without the use of hoisting and transport mechanisms.

This goal is achieved by the fact that the device for unloading big bags with bulk materials, consisting of a vibrating cone funnel with a seal and a tetrahedral knife for cutting big bags, a frame made in the form of four support racks, a removable traverse designed for attaching big bags and their installation on the support racks, additionally contains spring shock absorbers installed in the upper parts of the support racks, and the shock absorbers are compressed under the weight of a full big bag and unclenched as the big bag is unpacked .

The difference between this technical solution and the prior art is the presence in the upper parts of the support struts of spring shock absorbers, which are compressed when the beam is installed with a full big bag. This allows you to more densely install the big-bag on a vibratory funnel and reduces dusting of the material during unloading.

Another difference is that as the big bag is unpacked, the spring shock absorbers expand and raise the big bag. This allows you to facilitate the outflow of material and more fully unload the big bag without operator intervention.

Figure 1 shows a device for unpacking big bags in the initial state;

Figure 2 is a view A of the device;

Figure 3 - the initial stage of unloading a big bag;

Figure 4 is an intermediate stage of unloading a big bag;

Figure 5 - the final stage of unloading the big bag. A device for unloading big bags with bulk materials contains: a vibrating cone funnel 1 with a seal 2, a tetrahedral knife 3 for cutting big bags and a vibrator 4; frame 5, consisting of four support posts 6; spring shock absorbers 7; traverse 8, designed for transportation and installation of big-bag 9 on the support racks.

A device for unloading big bags with bulk materials works as follows. In the initial state, the spring shock absorbers 7 installed in the upper parts of the support posts 6 are unclenched (Figure 1). After suspending the big-bag 9 on the cross-beam 8 and installing the cross-beam using a lifting mechanism (not shown in the drawings) on the supporting posts 6, the spring shock absorbers are compressed and the big-bag fits more densely on the seals 2 of the vibration cone funnel 1.

In the process of installing the big bag 9 on the support posts 6 and compressing the shock absorbers 7, the bag is incised with a tetrahedral knife 3. Next, the vibrator 4 is turned on and the intensive outflow of material from the big bag begins (Figure 3).

As the big bag is unloaded, its weight decreases, and the spring shock absorbers 7 gradually expand and raise the big bag (Figure 4). In this case, poorly unloaded zones with material located along the edges of the big bag are lifted, and the material is poured to the center. At the end of the big bag unloading, the spring shock absorbers are completely unclenched and return to their original state (Figure 5).

Thus, the presence of spring shock absorbers allows you to more densely install a big bag on a vibrating cone funnel and completely unload it without additional lifting using an electric hoist or crane beam.

Sources of information to which attention should be paid during the examination:

1. A.V. Teleshov, V.A. Sapozhnikov, A.M. Krokhmal, A.B.Dolgopolov. Production of dry building mixtures: plants and plants of small capacity. // Building materials. 2002. No. 9.C35.

2. V.V. Efremenkov, K.Yu.Subbotin. New equipment for compound workshops. // Bulletin “Glass containers”. 2003. No. 12. p.7 (Prototype).

Claims (1)

A device for unloading big bags with bulk materials, consisting of a vibrating cone funnel with a seal and a tetrahedral knife for cutting big bags, a frame made in the form of four support racks, a removable traverse designed for transporting and installing big bags on support racks, characterized in that it further comprises spring shock absorbers installed in the upper parts of the support legs, the shock absorbers being compressed under the weight of the full big bags and unclenched as the big bags are unpacked.