RU2321528C1 - Method for hermetic sealing of container attachment assembly - Google Patents

Abstract

FIELD: transfer of powder material, explosive inclusive.

SUBSTANCE: a hose of flexible material is used for the purpose. Coupled to the flange of the receiving vessel neck is another flange having a cylindrical branch pipe on the interior side and tightly fastened vertically and diametrically positioned two pneumatic cylinders, a cylinder-tapered funnel whose tapered section enters the receiving vessel neck is installed to the rods of the pneumatic cylinders with the aid of a horizontal platform with a ring seal. The cylindrical part of the funnel and the branch pipe are connected with the and of the hose of flexible material, which is fastened above and under the restricting rings with the aid of the stretching belts with locks. The flexible hose is made with a lap by the value of the funnel raising. The container on wheels is moved above the receiving vessel on guides up to the restrictor, the wheels is automatically fixed by a retainer, and alignment of the container unloading hole and the neck of the receiving vessel is provided, with a simultaneous remote supply of compressed air to both pneumatic cylinders, and the ring seal is pressed to the flange of the container unloading hole.

EFFECT: provided reliable sealing of the container attachment assembly, enhanced level of safety due to exclusion of the direct contact of the flexible hose with the explosive in the process of transfer of powdery material, elimination of static electricity and remote control of the process.

1 dwg

Description

The invention relates to the field of processing powdered materials, including explosives.

The proposed method can be used in many industries to connect devices when pouring powdered materials.

A known method of sealing the unit of attachment of containers - US patent No. 5582219 USA, IPC BV 1/30 (declared. 07.21.93). According to this patent, a method for hermetically connecting two tanks is proposed. This patent provides for the installation of a sleeve made of flexible synthetic material (for example, polyethylene) at the junction of the corresponding apparatuses. The sleeve is fastened using special screw clamps.

However, this method, which is adopted as a prototype, has several disadvantages, as it cannot be used in the processing of explosives.

Most explosives have increased bulk and surface electrical resistance, which leads to the emergence of a sufficiently large potential of static electricity. The use of sleeves made of polyethylene, a poor conductive material, also contributes to the emergence and accumulation of static electricity on its surface. In this case, sparking is not excluded, which can be a source of ignition of explosives sensitive to an electric spark, with the subsequent occurrence of rapidly propagating processes of explosion or detonation.

The sleeve from a plastic film is not strong enough, which limits its repeated use.

The use of screw clamps for attaching sleeves is associated with manual operations, which is unsafe when working with explosives. A method is proposed for sealing a container attachment unit that is devoid of these drawbacks.

An object of the invention is to develop a safe method of sealing using a container attachment unit when pouring explosives from it into a receiving tank with remote connection and disconnection, limiting the possibility of the formation of dangerous potentials of static electricity. The technical result of the method of sealing the container attachment site using a sleeve of flexible material, its fastening is achieved by attaching to the flange of the neck of the receiving tank of the other flange, there is a cylindrical pipe on the inside and two pneumatic cylinders rigidly fixed vertically and diametrically to the rods of which by means of a horizontal platform with a ring seal a cylindrical-conical funnel is installed, the conical part entering the neck of the receiving tank and, the cylindrical part of the funnel and the nozzle are connected by a sleeve of flexible material and fastened respectively above and below the restrictive rings using stretch straps with locks, while the flexible sleeve is inlet by the amount of the funnel rise.

The container on wheels is moved above the receiving container along the guides to the stopper, while the wheel is automatically fixed with a stopper and ensures alignment of the discharge hatch of the container and the neck of the receiving container, while simultaneously supplying compressed air to both pneumatic cylinders, and by lifting the platform with a funnel using the pneumatic cylinder rods, press the O-ring to the flange of the unloading hatch of the container.

The proposed method of sealing the container attachment node allows you to provide:

- reliable sealing;

- safety due to remote execution of operations of attachment and detachment of the container;

- the removal of static electricity due to the contact of the filled explosive with structural elements of conductive metal and the possible implementation of their grounding;

- the multiplicity of operations for pouring explosive;

- the exclusion of direct contact of the flexible sleeve with the explosive during the pouring process.

A diagram of the installation of the container and its attachment to the receiving tank using the connection unit is shown in the drawing.

Another flange 4 with a cylindrical nozzle 19 is connected to the flange 1 of the neck of the receiving tank 22. Two pneumatic cylinders 5 are fixed to the flange 4, to the rods 21 of which a horizontal conical funnel 9 is installed, the conical part of which enters the neck of the receiving tank 22.

An annular seal 7 is placed on the site 6 from the upper side 7. A sleeve 3 of flexible material is put on the funnel 9 and the pipe 19. Sleeve 3 is fastened with stretch straps 2 with locks. The displacement of the belts 2 is prevented by the restrictive rings 11 located on the cylindrical part of the funnel 9 and the pipe 19. The sleeve is made with an inlet by the amount of rise of the funnel 9.

The process of connecting the container with the receiving container through the connection unit is as follows.

The container 10 on the wheels 12 is moved above the receiving container along the guides 14 and 17 to the stopper 13. In this case, one wheel 12 is automatically fixed by the stopper 15 and alignment of the discharge hatch of the container 10 and the neck of the receiving container 22 is ensured.

Remotely with the simultaneous supply of compressed air to the pneumatic cylinders 5, the rods 21 raise the platform 6 with a funnel 9 to the flange 8 of the container unloading hatch and tighten the rubber seal 7. The connection unit with the container 10 is hermetically sealed. The shutter 20 is remotely lowered at the container 10. In this case, the explosive contained in the container 10 through the funnel 9 enters the receiving tank. After unloading the explosive and closing the shutter 20 by depressing the pedal 16, the stopper is lowered to the level of the site and the container is brought to the side.

After releasing the pedal 16 due to the load 18, the stopper returns to its original position.

In the above manner, the next explosive container is installed, followed by emptying.

The connection unit is earthed to discharge static electricity. Thus, when applying the proposed method of sealing the connection of the container, remote and safe implementation of the operation of connecting and disconnecting the container, the repeated execution of this operation, the removal of static electricity is ensured. The model version of the method of sealing the container’s connection under the conditions of FSUE “NIIPM” was tested with a positive result.

Claims (1)

A method of sealing a container attachment unit, including the use of a sleeve of flexible material and its fastening, characterized in that another flange is connected to the neck flange of the receiving container, having a cylindrical pipe on the inside and two pneumatic cylinders rigidly fixed vertically and diametrically to the rods of which platforms with an annular sealant install a cylindrical-conical funnel entering the conical part into the neck of the receiving tank, cylindrical each part of the funnel and the nozzle are connected with a sleeve of flexible material and fastened respectively above and under the restrictive rings using stretch straps with locks, while the flexible sleeve is inlet by the amount of funnel lift, the container on wheels is moved above the receiving tank along the guides to the limiter, at the same time, the wheel is automatically fixed with a stopper and ensures alignment of the unloading hatch of the container and the neck of the receiving tank, with the simultaneous remote supply of compressed air to both pneumatic the cylinder and lifting the platform with the funnel using the rods of the pneumatic cylinders, press the annular seal against the flange of the discharge hatch of the container.