MXPA98005877A - Deposit for storage and transportation of liqui - Google Patents

Abstract

The present invention relates to a tank for storing and transporting liquids, comprising: a platform-like base, an interchangeable inner tank mounted on the base, the inner tank comprises four side walls, a bottom wall and an upper wall, an opening upper enclosing entrance and a lower exit opening with a drainage device, an outer frame surrounding the inner reservoir, the outer frame consists of vertical and horizontal metal bars in the form of a grating and further comprises a coating of an electrically conductive material applied on the inner reservoir of synthetic material, where the coating is of a fabric, or a net or a lattice and at least partially surrounds the inner reservoir

Description

D "" "E" P'O'SITO -P «..- A.« - (.R. • A, A ,, LMACEN.AMIE, NTO AND TRANSPORTATION OF L QUIDOS DESCRIPTION OF THE INVENTION The invention relates to a tank for storing and transporting liquids, with a base in the form of a platform, an interchangeable inner plastic tank with 4 side walls, a floor and cover, a top opening for filling that can be closed and an opening lower for the outlet with a drainage system, likewise a coating on the inner tank, which is formed horizontally and vertically as a metal lattice. For the filling and emptying of this type of tanks, according to the known norm DE 195 11 723 Cl for the handling of this type of tanks for liquids in this type of tanks, for example, in the mixing, electric charges with friction can arise of Liquids in the upper part of the deposit. The main danger of electrostatic charges, is, in the encounter of sparks with mixtures of gases and vapors that can explode.

Due to the sensitivity of the electrostatic charge of the plastic inner tanks, the tank and transport storage versions with lattice frames will not be able to enter areas that are at risk with explosions and can not be filled with explosive liquids. The object of the invention is to improve the construction of reservoirs for the transport of liquids and storage of lattice frames, so that an electrostatic charge of the plastic inner reservoir can be avoided in the process of filling and emptying of liquid. This objective is solved by the invention of a tank for storage and transport of liquids, with the features of claim 1. The following indications contain the explanations of use of the invention. The invention is based on a tank with an internal plastic reservoir for the transport and storage of liquids, which at the same time contains an outer metallic mesh, in vertical and horizontal direction, and provided with a base, on which the tank rests inside, wrapped by a woven material that conducts electricity, preferably metallic, which embraces partially or completely, so that the electrical charges that originates in the processes of filling and emptying the tanks for storage, transport and for the agitation of Liquids in the tanks, for example, for mixing through the friction of liquids, which are formed on the surface of the plastic inner tank, through the reverse of the outer shell and the lower base (pallet type), the which also consists of a good conductor material of electricity and that is driven to the floor. The fact that the inner plastic deposit is electrically grounded allows the use of the storage and transport tank, as a fire storage tank, especially for the handling of flammable liquids and emulsions such as solvents, paints and varnishes with a flammability point of < 35 ° C, as well as the use of deposits in industrial areas where an explosive atmosphere of gases, vapors or fog can form. A possibility is described in volume 59, notebook No. 12 pages 838-842 of the plastics manual of the year 1969, that electrostatic charges of combined plastic and fiberglass tanks can be avoided, and recommends the placement of mesh on the walls to conduct electricity. From the standard DE 85 19 765.3 Ul mentions the existence of flexible deposits of textile materials for the handling of bulk materials. To avoid the formation of electrostatic charges, the material of the walls of the tank contains a metal film and an integrated binder, which contains electrical conductive particles. The standard DE 73 41 620 Ul, describes storage tanks for liquids i ncend i ab 1 e s, plastic and fiberglass, which have integrated into a construction, around the cylindrical walls and on the floor a series of conductive meshes of electricity to absorb the electrostatic charges. From the standard DE 32 14 940 Al it is known that there are sheets with properties to deflect electrostatic charges. This type of sheets is suitable for the packing of pieces for electronic connections, which act to protect from the influence on the damages due to electrostatic charges. The sheets formerly had a relatively high surface strength, however, through pressure with a matrix sample and the application of electrically conductive paint, at least a first and a second interlaced group are formed on the pressed surface. spaced conductive wires repellent to static charges will form between them. The invention of a deposit for storage and transportation, with the properties of Claim 1, with the current knowledge of the technology, is not known. The invention will be explained below, based on a prospective presentation of a deposit for transportation and storage. The storage tank 1 for the transport and storage of liquids 1, has as its main construction component, an interchangeable inner tank with the shape of a polyethylene parallelepiped 2, with four walls 2a-2d, one lower one as floor discharge 3, a top cover 4, with a threaded lid 6 filler neck with lock 5, likewise an outlet throat 7, with an exit key 8, an outer layer 9 made with horizontally and vertically crossing grids 10, 11 of metal, a base in the form of stage 12 with a tub 13 of sheet, with the shape for receiving the inner plastic deposit 2 as well as two crosspieces of the metal cover 14 to protect the inner deposit 2. The tub 13, orientates, with a certain dimensional tolerance, on the floor and the corners 15, 16 and a lower frame 17 or vault, so that the tub 13 to be transported the storage and transport tank 1, has on all four sides d e support arms, to be hooked, for example by a forklift. The ends 15, 16 and the lower frame 17 and / or the vaults are metallic or of an electrically conductive plastic, for example; polyethylene with black smoke. The base platform 12 of the storage and transport tank 1 has the dimensions determined by European standards, in terms of length and width. On the inner plastic container 2, there is a coating 18 of a good electrically conductive material, in the form of a basket or cover 19 of a thin metal wire with an opening less than 100 x 100 millimeters.

More coverings 18 for the inner plastic deposit 2 of the storage and transport tank 1, can be added, through a network or a metal mesh, or a plastic conductor of good electricity, they can also be placed on the inner tank, entangling or tensing the aforementioned coating.

Claims (5)

1. A tank for storage and transport of liquids, with a platform-type base, an interchangeable plastic inner tank with four walls, a floor and a roof, a top opening with lock for filling, as well as a lower draining device, a covering that covers the inner tank, formed by metallic bars and placed in vertical and horizontal form, identified by a coating on the inner plastic tank, which partially or totally covers the same, of a good conductive material of the electity, elaborated in form of net, fabric or lattice.

2. The reservoir according to the rei indication 1, identified in that, the coating, of the inner plastic reservoir may be made of metal or of an electrically conductive plastic.

3. The reservoir according to claim 1 and 2, identified, by a cover placed on the inner plastic reservoir of a thin wire.

4. The tank according to rei indication 1 and 2, identified by a cover in the form of a net or woven of an electrically conductive material, which envelops, the inner plastic deposit.

5. The reservoir according to some of claims 1 to 4, identified in that the opening of the coating on the inner plastic reservoir is less than 100 x 100 millimeters. SUMMARY OF THE INVENTION The main reservoir for transport and storage (1) of liquids, the main reservoir of its construction, is an interchangeable inner reservoir of polyethylene (2) with the shape of a parallelepiped, with a lower exit floor (3). ), a top cover (4) with a screw-in cover (6), a lockable filler neck (5) as well as an exit key (8), a metal outer layer (9), with horizontally and vertically crossed grids (10, 11) a base in the form of a platform (12), with a sheet tub (13), with the shape for receiving the liquids from the inner reservoir (2), as well as two metal lid covers (14) for protect the inner deposit. On the inner plastic deposit (2) we have a lining (18) of electrically conductive material, which for example is formed by a lattice cover (19) of a metallic wire of the gado. The electric charges that are formed, with the filling of the tanks (1) with liquids and the emptying of liquids from the tanks, through the friction formed by the liquids on the surface of the inner tank (2), are discharged into the tank. floor, through the lining (18), the outer layer (9), the tub (13), the intermediate and corner ends (15 and 16) and the lower frames (17).