SU1530960A1 - Apparatus for fluid-tightness testing of articles - Google Patents

Abstract

The invention relates to instrumentation engineering and can be used for sealing hollow articles. The goal is to increase test performance. To do this, in the cavity of the stem 2, a bushing 14 is installed at one end, in the wall of which channels 16 and 17 are made; spring 21 relative to the stem 2. On the plunger 18 between its head 19 and the end of the sleeve 14 is located a seal 22 and is designed to isolate the annular gap 24 between the sleeve 14 and the plunger 18 from the cavity 4 of the rod 2. On the side surface of the plunger 18 is placed density 23, designed to close off channel 17 and channel 7 to release the test medium. After the channels overlap, the product is filled with the test medium, then the pressure of the medium in it increases and the strength test is performed. 3 il.

Description

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The invention relates to instrumentation engineering and can be used for sealing hollow articles with automatic supply of the working medium and its release during depressurization.

The purpose of the invention is to increase the productivity of the testing process.

FIG. 1 shows the device a general view; in fig. 2 is a view A of FIG. one; in fig. 3 is a section BB in FIG. one.

A device for testing hollow articles for leaktightness comprises a housing I, installed therein with the ability to move a rod 2 with a nut 3 at the end and an internal cavity 4, communicated with it a fitting 5 and channels 6 and 7, respectively, for supplying and discharging the test medium from product 8 , a sealing element 9 mounted on the rod 2 between the nut 3 and the body 1 by means of inserts 10, an eccentric 11 with a handle 12, hinged on the rod 2 by means of an axis 13 with the possibility of interaction with the body 1 mounted at one end in the cavity 4 the rod 2 a sleeve 14, which is fixed by means of a sleeve 15 and in a wall (not marked) of which two channels 16 and 17 are made, hermetically communicated with channels 6 and 7 of stem 2, respectively, a plunger 18 with a head 19 on the end, mounted inside the sleeve 14 with the possibility of interaction the other end 20 with the handle 12 of the eccentric And and spring-loaded spring 21 relative to the rod 2, and two seals 22 and 23, and the seal 22 is located on the plunger 18 between its head 19 and the end face (not labeled) of the sleeve 14 and is intended to isolate annular gap 24 between sleeve 14 and the plunger 18 from the cavity 4 of the rod 2, and the seal 23 is installed on the lateral surface (not indicated) of the plunger 18 and is intended to shut off the channel 17 and the channel 7 to release the test medium. The device is designed for installation in the neck 25 of the product 8.

The device works as follows.

In the initial position, the eccentric 11 is raised. The fitting 5 is connected to a pressure line (not shown) of the test medium, for example air.

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The product 8 is installed by the neck 25 on the device up to the stop of the neck 25 in the housing 1. The handle 12 of the eccentric 11 is lowered, the yoke 2 with the nut 3 moves upward relative to the housing 1, and the sealing element 9 is wedged in the neck 25, sealing the product 8. With further movement of the handle 12, it presses on the end 20 of the plunger 18, its head 19 together with the seal 22, overcoming the resistance of the spring 21, moves away from the end of the sleeve 14, opening the test medium from the cavity 4 of the rod 2 to the annular gap 24, from where this medium enters through the channels 16 and 6 into the product 8. The channels 17 and 7 at this moment overlap with the seal 23 moving together with the plunger 18, the product 8 is filled, then the pressure of the medium in it increases. The tightness test is carried out in any known manner.

After the test, the handle 12 of the eccentric II is raised. Under the action of the spring 21, the plunger 18 returns to its original position, the seal 22, pressing against the end of the sleeve 14, blocks the flow of the test medium, and the seal 23 moves off and opens the channels 17 and 7, while the test medium leaves the product 8 to the atmosphere through the channels 6 and 16, the annular gap 24 and the channels 17 and 7. The sealing element 9 is returned to its original position. Product 8 is removed from the device.

Claims (1)

Invention Formula A device for testing products for tightness, comprising a housing, a spindle with a nut at the end and an inner cavity that are movable therein, a fitting and channels, respectively, for supplying and discharging the test medium from the product, the sealing element mounted on the stem between the nut and body and an eccentric with a handle hinged on the rod with the ability to interact with the body, different from THAT, in order to improve the performance of the test process, it is fitted with ovalna in one end in the cavity of the stem sleeve, in the wall of which two channels, hermetically connected to the stem channels, a plunger with a head at the end installed in the sleeve with the possibility of interaction with the other end with an eccentric handle and spring-loaded relative to the gate. and two seals, one of which is located on the plunger between its head and the end of the sleeve, and the other is mounted on the side surface of the plunger and is intended to block the channel of the test plug. P go 7 ;; Phie.1 Type A F1 / g.2 ; j