RU44258U1 - SEALING FILLING TANKS AND CHARGING DEVICE - Google Patents

Abstract

Installation of refueling of sealed containers relates to fire fighting equipment and implements a method of refueling them by creating a vacuum in the tank using a vacuum pump and at the same time pumping compressed air under low pressure into the upper part of the discharge hopper and under the aeration wall in the lower part of the hopper. The installation includes an unloading hopper, which is connected by means of an outlet pipe to a suction nozzle filter and a charger, a vacuum pump, valves for supplying compressed air and an air-powder mixture, pressure reducers, a filter drier, an excess air purification filter, and scales. The charger is installed in the neck of a refueling container, such as a powder fire extinguisher. Due to the design of the charger in the form of a rubberized truncated cone, fire extinguishers of any standard size can be refueled. The refueling tank is installed on the platform of the scales, while the electronic circuitry of the scales determines the weight of the empty tank. The weight of the powder to be charged into the tank is determined, and the filling process is started by opening the air-powder mixture supply valve and a valve opening the access of compressed air from the source to the vacuum pump and through the filter dryer and gearboxes to the loading hopper, which ensures the filling of the container, upon reaching the tank weight equal to the sum of the empty tank and the weight of the charged powder, the taps for supplying the air-powder mixture and compressed air are closed and the filling process stops, after which Xia compressed air reverse current excess air filter, thereby providing cleaning of the filter of the powder particles. The technical result consists in increasing efficiency, filling accuracy, reducing labor intensity and filling time.

Description

The utility model relates to fire fighting equipment, in particular, to installations for refueling powder fire extinguishers, where the energy of compressed gas is used.

From the technical literature there is known a method and device for transferring bulk cargo from a hopper to a place of consumption using a pneumatic method of unloading (see Vishnyakov N.N. et al. Automobile. Fundamentals of Design. Moscow, "Engineering", 1986, p. 288 -289). The disadvantage of this method is its inability to refuel sealed containers, the supply of cargo from the hopper without filtering it.

A charger is known that contains nozzles for supplying an air-powder mixture and removing excess air, and made in the form of a truncated cone - see RU 2108947 C1 (MACHINERY PLANT "STAMP"), publ. 04/20/1998, 5 pp.

The disadvantage of this device is the inability to refuel containers of different diameters of the necks without violating the tightness.

A powder fire extinguishing device is known in which a method of filling a container with powder using a vacuum pump that creates a vacuum in a filled container is implemented, and excess air generated as a result of filling the container with powder is discharged through a filter (SU, copyright certificate No. 1247023, 1449135, class. A 62 C 35/00, published on January 7, 1989, Bulletin No. 1).

The disadvantage of this method is that the container is filled with powder directly from the tank without filtering and processing, as a result of which lumps and impurities of an unacceptable size can get into the container. In addition, it is impossible to ensure the accuracy of filling the tank to the desired level.

The closest analogue is a refueling station for sealed containers, which implements a method of filling by creating a preliminary vacuum using a vacuum pump, see RU 2119808 C1 (LLC "Technical center for fire safety"), publ. 10.10.1998, the Station includes a refueling tank connected through a intake-loading pipe with a intake nozzle and a filter-crusher, a cyclone precipitator with a charging device. The charger is installed on the neck of a refueling container, such as a powder extinguisher. Due to the implementation of the charger with an adjustable nozzle for supplying the medium, it is possible to refuel fire extinguishers of various sizes with a given volume of powder. Before refueling, the container and the cavity of the precipitating cyclone are evacuated, after which the powder is sucked into the container. Excess air escapes through the filter in the precipitating cyclone. After several refueling cycles, the filter is purged back by connecting a compressor to the distributor.

A disadvantage of the known analogue is that the capacity is filled by volume, which does not allow filling the containers, for example fire extinguishers, with a powder of a given weight with the required accuracy.

In addition, the need for preliminary evacuation, readjustment of the charger under containers of various sizes and the inability to control the end of the process of filling the tank, after which the powder already enters the cavity of the cyclone-precipitator and filter, leads to increased complexity, increased filling time and reduced efficiency. Also, the design of the charger does not allow filling the containers of some sizes.

The technical task of this utility model of the invention is to increase the efficiency, accuracy of filling and reduce the complexity and time

filling in.

The task is ensured by the fact that when refueling sealed containers, which consists in connecting the sealed container to the discharge hopper through the charger, the pipeline with the intake nozzle and filter, injecting compressed air under slight pressure into the upper part of the discharge hopper and under the aeration wall, creating a vacuum in the container and exhaust from the last excess air through the filter, refueling is carried out until the weight of the tank is equal to the sum of the weight of the empty tank and the required powder weight, whereupon the filling cycle ends and the filter is cleaned by reverse air flow.

This utility model is illustrated by drawings, in which Fig. 1 shows a refueling installation of sealed containers, and Fig. 2 shows a charger. The task is carried out by the installation of refueling of sealed containers, which contains an unloading hopper 1 for supplying and storing powder, an outlet pipe 2 with a suction nozzle-filter 3, an aerator with a perforated partition 5, and the aerator is connected to the air supply from the filter-dryer 7 through a pipeline through a reducer 8, the filter drier itself is connected to the air supply through the valve 10 from the compressed air source through the pipeline 9. In addition, the hopper has a lid 11, which is fixed with brackets, between the flanges of the cover and the hopper there is a sealing gasket 12. At the top of the hopper there is a nozzle for supplying compressed air 13, which is connected to the air supply from the filter dryer through a reducer 14 by means of a pipe 15. The outlet pipe 2 is connected to the charging device 18 by means of a shut-off valve 16, a rigid pipe 19 and flexible conduit 20, wherein the charger is connected by

a flexible pipe 17 with a filter 21 and a vacuum pump 22. The filter 21 is connected through an overflow valve 25 to a source of compressed air. Refillable tank 23 is located on the platform of the scales 24.

The charger consists of a housing 26, a rubberized truncated cone 27, a pipe for supplying air-powder medium 28, a coal pipe for removing excess air 29, a fitting 30 with a union nut 31. The case 26 is connected by a pipe for supplying an air-powder medium 19, and the cone 27 is inserted into the neck of the sealed container 23. The seal 32 ensures the installation of the cone in the neck of the tank of any size and design without violating the tightness.

Installation works as follows:

The refueling tank 23 is placed on the platform of the scales 24 and the charger 18 is lowered into the neck of the refueling tank. Compressed at a pressure of 0.2-0.6 MPa, the air from the source enters the vacuum pump 22 through a reducer 6 and to the filter drier 7. The air purified from dust, oil and moisture at a small pressure of 0.05 MPa enters the aerator 4 and the upper part of the hopper through the nozzle 13. The aerated powder under the influence of weight, air pressure and vacuum generated in the vacuum pump by a stream of compressed air enters the intake nozzle 3 of the outlet pipe 2, while the filter of the intake nozzle ensures that the container is filled with powder of a given fraction, and further through h charger directly to the tank. The excess air that forms when the tank is filled through the pipe 17 enters the filter 21, and then, purified, through a vacuum pump, into the atmosphere.

When the weight of the tank reaches a value equal to the calculated sum of the empty tank and the weight of the powder to be charged, the process of filling the powder with the specified weight of the tank 23 ends.

Due to the fact that the charger is made in the form of a rubberized truncated cone, you can fill the tank of any size, shape and design.

Refueling installation allows you to refuel any fire extinguishers at a given powder weight in accordance with their technical characteristics, while there is no loss of powder during charging and time loss for readjusting the charger and measuring the load weight.

Claims (2)

1. Installation of refueling of sealed containers, including a vacuum pump, excess air filter, outlet pipe with a suction nozzle, a charger associated with a sealed container, characterized in that it is equipped with a discharge hopper, in the lower part of which an aerator with a perforated partition is installed, and in the upper part of which there is a nozzle for supplying compressed gas and a cover with a gasket, a filter drier, a valve for supplying compressed air, a pressure reducer, connected to the nozzle in the upper part and discharge hopper, pressure reducer, connected to an aerator, pressure reducer, connected to a vacuum pump, intake nozzle-filter of the air-powder mixture, air-powder mixture supply valve, purge filter valve for excess gas purification, with weights, on which the refueling tank is installed. 2. A charger made in the form of a truncated cone, characterized in that the surface of the cone is covered with a seal.