SU422870A1 - ELECTROPNEUMATIC DISCRETE CONVERTER - Google Patents

Description

The invention relates to the output ycTpofysgvam means of pneumatic automation and is used to automate technological processes.

Electro-pneumatic discrete transducers are known, comprising a housing with a sealed cavity connected to an output channel;) m, which is equipped with an electromagnet with a bar. The anchor is made in the form of a yoke, one shoulder of which is located against the core of the electromagnet, and the other is connected with a spring and a flap installed between the two nozzles.

The disadvantage of these converters is the inefficient ratio of the tractive force of the electromagnet and the force required to seal the nozzles while maintaining the stroke of the flap, which reduces their reliability or, in the case of the use of high-power electromagnets, increases the size and weight.

The proposed converter is characterized in that the bark is made in the form of a three-arm lever, on the third arm of which a valve is freely placed consisting of two elastic, for example rubber, disks rigidly interconnected by a rod.

The drawing shows the proposed electropneumatic discrete Converter.

The converter contains a hermetic case / Electr with an agent 2 and a rocker arm 5, made in the form of a three-arm lever, previously lifted by the spring 4 into the extreme position. The casing is fitted with sop, pa 6 and 5. Between the nozzles there is a self-orienting valve 7, consisting of two disks of elastic material, such as rubber, rigidly connected to each other by a rod freely passing through the hole at the end of the third arm 8 of the rocker arm 3. In the housing 1, an outlet channel 9 is provided, communicated with the internal cavity of the hermetic housing, and the channels / and 11 communicated with nozzles 5 and 6 for supplying power and for resetting.

In the absence of an electrical signal f / Bx applied to the winding of the electromagnet 2, the left shoulder of the rocker arm 3 is in the upper position by the action of the spring 4. In this case, the right shoulder 8 of the yoke 3 presses against the flap 7 and closes the nozzle 6, thereby making pneumatic switching of channels 9 and 11.

In the presence of an electrical signal LIj, the left shoulder of the rocker arm 5 is attracted to the core of the electromagnet and, overcoming the force of the spring 4 acting on the vertical arm of the rocker arm 3, moves the flap 7 and closes the nozzle 5, thereby achieving pneumatic switching of the channels P

3

and 10. When the electric signal is removed, the beam returns to its original position.

Subject invention

An electropneumatic discrete transducer comprising a housing with a sealed cavity connected to an output channel in which an electromagnet is installed with a bark made in the form of a rocker arm, one arm of which is located opposite the core of the electromagnet and the other connected to a spring, and and reset, between which there is a flap, characterized in that, in order to increase the reliability of the device, the rocker is made in the form of a three-arm arm, on which the flap is located, you olnenna in the form of two discs of an elastic material such as rubber, is rigidly interconnected rod, freely disposed in the opening at the end of the third rocker arm.