SU1479785A1 - Device for filling vessel spaces with powder heat insulating material - Google Patents

Abstract

The invention relates to vacuum technology and can be used in the manufacture of insulated vessels. The goal is to increase productivity and save thermal insulation material. A vacuum chamber of variable volume, equipped with a movable piston with elastic sealing rings and adjustment holes, is located in the device case. 1 il.

Description

(21) 4189121 / 23-26

(22) 02.02.87

(46) 05/15/89. Bup. № 18 (72) E. B. Bogun, V. I. Shalaev, G. S. Tsoglin and S. E. Bogun

(53) 621.59 (088.8)

(56) USSR Copyright Certificate No. 625970, cl. B 65 B 1/26, 1978.

(54) DEVICE FOR FILLING CAVITY OF VESSELS BY POWDER THERMAL INSULATION

(57) The invention relates to vacuum technology and can be used in the manufacture of heat-insulated vessels. The goal is to increase productivity and save thermal insulation material. A vacuum chamber of variable volume, equipped with a movable piston with elastic sealing rings and adjustment holes, is located in the housing of the device. 1 il.

one

The invention relates to devices for filling cavities of vessels with powder material, in particular, interstitial cavities of thermally insulating Dewar vessels, all-metal thermoses, and can be used in vacuum and cryogenic technology, in packaging various types of bulk materials into rigid containers or containers.

The purpose of the invention is to increase the productivity and economy of the heat insulating material by metered filling the interwall cavity of the heat insulating vessels at one time and ensuring the possibility of automation.

The drawing shows the device.

The device consists of a housing 1 in which a vacuum chamber 2 of variable volume is placed, a charging outlet pipe 3, terminating on one side with an elastic diffuser 4, and on the other side a locking device 5 connected by pipeline to a hopper,

which contains heat insulating material (not shown) and filter 6. Bottom around the perimeter, the body has a visor 7 in which an elastic sealing ring 8 is located. In the chamber 2 of variable volume there is a piston 9 with elastic sealing rings: the inner 10 and outer .

Ring 10 seals the piston over the filling nozzle, ring 11 along the inner cylindrical surface of the housing. The piston 9 has holes 12 for its rotation with a special key during adjustment (not shown). A nozzle 13 is located outside the chamber 2, connecting the interstitial cavity through the chamber 2 and the valve -14 with a vacuum system (not shown).

The diffuser 4 enters the opening 15 of the thermos flask 16 to fill the cavity with bulk materials 17. The elimination of distortions of the piston and the charging port 3 is achieved by installing a feed washer with slit-like openings 18.

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The reciprocating movement of the piston 9 in the chamber 2 is carried out, for example, over a threaded connection.

The device works as follows.

Before starting work, it is necessary to adjust the device for the issuance of a strictly defined dose of thermal insulation material into the interstitial cavity 17 of thermos 16 (depending on the volume of this cavity). When adjusting, first, the piston 9 is installed in the middle of the chamber 2, rotating it by the adjusting holes 12 with a special key (not shown). Here, the piston is lowered (or raised) along the thread 19, depending on the direction of rotation.

Thermos 16 is fed (manually or automatically) under the device for filling the interwall cavity with powder heat insulation. The filling device is lowered onto a thermos (or a thermos is lifted to the filling device). At the same time, the diffuser 5 enters the opening 15 of the thermos 1. The sealing ring 8 is placed on the thermos 16 around the opening 15.

When closed, the locking device 5 and the open valve 14, the device is connected to a vacuum system (not shown) and turn it on. The evacuated air passes from the interstitial cavity T7 through the opening 15 of the thermos 16 through the filter 6, the chamber 2, the nozzle 13 and the valve 14 into the vacuum system. In this case, a vacuum is created in the interwall cavity 17 of the thermos 16, as well as in the chamber 2 of the device.

Under the action of the pressure difference inside the chamber 2 created by the vacuum system and the atmosphere, the T6 thermos is pressed against the sealing ring 8, providing a tight connection with the filling device. Vacuum the interwall cavity 17, chamber 2 to a predetermined vacuum, for example 50 to 200 mmHg. Then the valve 14 is closed and the shut-off device 5 is opened. Under the action of the pressure difference in the hopper with powder heat insulation (pressure is atmospheric) and interwall wall 17 of thermos 16, as well as in chamber 2, powder heat insulation enters the wall between walls 17

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the thermos 16 until the pressure in the bunker, the interwall, the cavity 17 and the chamber 2 is equalized.

By weighing the thermos, the amount of powder heat insulation entering the interwall cavity 17 is determined. If an insufficient amount of heat insulating material enters it, it is necessary to increase the volume of chamber 2 by moving piston 9 upwards, rotating it by opening 12 counterclockwise. As the volume of chamber 2 increases, the equalization time of pressures in the bunker, the interwall cavity 17, in chamber 2 increases, and, accordingly, the amount of powder heat insulation supplied to the interwall cavity increases. If an excessive amount of powder heat insulation has entered the interwall cavity 17, it is necessary to reduce the volume of chamber 2 by rotating the piston 9 clockwise.

When adjusting the device for the delivery of a strictly defined dose, for each test filling of the interwall 17, a new unfilled thermos is taken, having increased or decreased the volume of chamber 2 to perform the operation of filling its interwall 17 with powder thermal insulation in one step.

In the case of operation on an adjusted device in automatic mode, thermoses 16 are successively one after another delivered by a transport device (not shown) to the initial position under the device, which is lowered so that the diffuser 4 falls into the opening 15 of the thermos 16. Then the thermos is evacuated, filled with powdered thermal insulation in one step and transported for further operations according to the technological process, and under the device serves the next thermos with an identical volume of cavity 17. In the case of transition to filling thermos with g ugim cavity volume perenastraivaets device 17 in this manner.

If, due to the positioning errors of the thermos 16, the diffuser 4 does not accurately fit into the hole 15, then the diffuser 4, since it is made of elastic material (e.g. rubber), is deformed and does not cause damage to the thermos 16 and the filling device. Thermos returns 5 1

only for the filling operation, and the device remains operable.

The use of the proposed device for filling the cavity of thermal insulating vessels with powder thermal insulation increases the productivity when filling the cavity of thermal insulating vessels, since there is no need to repeat the evacuation of the interstitial cavity, especially one that is partially filled with thermal insulation.

Filling the interstitial cavity at a time increases the operating time of the device with the same filter, since each time a cavity in which there is no thermal insulation material is evacuated.

The use of a charging nozzle with an elastic diffuser makes it possible to avoid sticking powder insulation in the socket and also to automate the process of filling the cavities of the heat insulating vessels with powder insulation, as there is no threat of device breakage and damage to the vessel due to technological errors of its base.

The ability to reconfigure the device allows on one site (after reconfiguration) to fill several types of heat insulating vessels, differing in volume, shape, etc. The device saves energy, since one vessel is evacuated only once. Ekono797856

Powder thermal insulation is achieved by preventing material from being carried into the vacuum system and over- (the filling of the interwall cavity).

Supplying the piston with elastic sealing rings reliably seals chamber 2, and ensuring accurate reciprocating movements of the piston by means of a threaded joint ensures accurate metering of the powder material.

Claims (1)

Invention Formula A device for filling the cavity of vessels with powder thermal insulation, comprising a vacuum chamber body with discharging along its axis: a branch pipe, a vacuum connection to the vacuum system, a filter and a magnetic ring, characterized in that, in order to increase productivity and save thermal insulation material by; dosed filling of interstitial walls, cavity of insulating vessels for one reception, and providing the possibility of automation, vacuum chamber The ra is equipped with a piston with elastic sealing rings and adjustment holes, installed with the possibility of reciprocating movement along the axis of the housing, for example, by threaded connections, and the charging port is provided with an elastic diffuser.