SU785157A2 - Two-way air stream direction switch - Google Patents

Description

This invention relates to a pneumatic port. According to the main author. St. No. 472083 is known for a two-way airflow direction switch, comprising a housing with inlet and outlet nozzles, inside of which there is a switching valve with a drive for translating it into one of two working positions, the damper being designed as an elastic diaphragm, the edges of which are partially fixed. in the housing along the intersection of the outlet nozzles, and to the free part of the rim of the diaphragm we attach an arcuate frame connected to the drive {l. The disadvantage of the switch is that due to the presence of an arcuate frame in the open part of the edge of the diaphragm between, the wall of the shut-off outlet pipe and the flexible diaphragm, a gap is formed that during operation leakage of compressed air and the transported material into the blocked pipeline occurs. The purpose of the invention is to increase the reliability of the switch. The goal is achieved by the fact that the elastic diaphragm consists of two interconnected plates, between which a closed cavity is formed, filled with crushed magnetic material. FIG. 1 shows the proposed two-way switch; in fig. 2A-A section of FIG. one; in fig. 3 - elastic diaphragm, incision; in fig. 4 section bb FIG. 3, The two-way air flow direction switch comprises a hollow split housing 1 assembled from two halves forming the inlet 2 and the outlet 3 and 4. The half halves are interconnected by flanges 5 and 6 between which the edge of the elastic diaphragm 7 is clamped, elastic rubber, glued together between themselves in such a way that a closed cavity Q is formed between them, filled with crushed magnetic material 8, for example, an EHZ magnetic hard steel, designed to reliably press the diaphragm we are to the walls of the outlet pipes. Part of the aperture of the diaphragm is not pressed between the flaccans. It is fixed on the arcuate frame 9 equipped with pins 10 and 11, which are mounted in bearings 12 installed in the housing. Pin 10 is rigidly connected to the lever 13, which serves to transfer the diaphragm to one of two working positions depending on which of the output ports of the switch flow is directed. The lever 13 is kinematically connected to the drive (not shown).

The switch works as follows. , i -, S

Pipe 2. they are attached to the pressure pipeline, and the pipes 3 and 4 are connected to the branch pipes (not shown). The actuator acts on the lever 13, which rotates the pins 10 and 11 in the bearings 12, which are installed in. case 1.

. When turning, the pins carry the skeleton 9 along with the edge of the diaphragm 7 tucked between the flanges 5 and 6. At the perimeter of the passage, attractive forces arise, reliably sealing the response — vylyol T 5 suboprivd, attached to nozzle 3. The transported medium through nozzle 2 without leaks — enters the nozzle 4 and further into the pipeline connected to it. To switch to another pipeline driven

785157

report reverse. The force developed by the actuator overcomes the adhesion forces of the crushed magnetic material to the wall of the outlet nozzle, tears off the elastic diaphragm from its walls and transfers it to the wall of the adjacent nozzle, and the transported medium begins to flow into another tap-off pipe.

The use of the invention will reduce the leakage of compressed air and the transported material and eliminate dusting of the transported medium through the free junction pipe.

Claims (1)

1. USSR author's certificate No. 472083, cl. B 65 G 53/56, 1975 (prototype). 2 Fi2.3 S-6 S  Iqt / CHUCH A (L / UO