Oxygen single-chamber gearbox

Added: 21.04.2022
Size: 1 MB
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Description

The device and operation of the gearbox. The single-chamber gearbox is designed to reduce the pressure of oxygen and maintain it at a given level. Oxygen to the gearbox comes from a cylinder or line. Assemble the gearbox in the following order: In the hole f10 of the body 1 on the side of the hole M16 with a conical chamfer of 2.5 mm press the saddle 13 to the stop. A bushing 11 is then screwed into the hole M16.On the cylindrical part of the f2 of the rod 12, a plate 10 is put on; the end of the rod is riveted in sweat. The rod assembly is inserted into the hole f6 of the saddle 13 to the stop. An ebonite bushing 25 is pressed into socket f7 of the valve body 24, and a pin 23 flush with the body end is pressed into socket f2. The valve assembly is inserted into the opening f15 of the housing 1 up to the pin stop at the end of the rod 12. A spring 22 is placed in the socket O12 of the valve body 24, a stop 21 is put on the spring. A captive nut 20 is screwed onto the body 1 so that the body of the valve 24 is pressed against the rod 12. It consists of parts 2, 3, 4, 5, b, 7, 8 and 9. A pin 8 is pressed into the hole of the f8 screw 9 so that the protruding parts of it are equal. The screw is screwed into the lid 5. Plate 7 is inserted into the f20 lid hole with a flat end. The spring 6 is then inserted. A pressure plate 4 is installed on the spring so that its rod f6 enters the inside of the spring. A fibre gasket 2 is installed in the splitting of the cover 5, then a rubber diaphragm 3. The cover assembly is screwed onto the housing 1 so that the diaphragm 3 touches the plate 10.On the inlet fitting 30, the threaded side of the captive nut 29 is worn to the stop. The fitting is screwed into the hole M14 of the housing 1, in the socket of which the gasket 31 is pre-installed. A mesh 28 is soldered to the cylindrical part f6 of the filter housing 26. On the side of the mesh, a fiber gasket 27 is put on the filter housing to the stop; in this case, the end of the filter mesh is rolled into a tube. The filter assembly is screwed into the fitting 30.The safety valve is assembled in a separate unit. It consists of parts 15, 16, 17, 18 and 19. A rubber plug 19 is inserted into the socket f9 of the valve 18, then the valve 18 is inserted into the opening of the housing 17 so that the plug blocks the opening f4. The spring 15 is placed in the opening of the housing 17, then the plug 16 is screwed in. The assembled safety valve is screwed into socket M16 of the housing 1, in which the gasket 14 is pre-installed. The assembled gearbox is connected to the oxygen tank by an input fitting 30 with a captive nut 29. A filter is inserted into the housing of the inlet fitting to protect the gearbox from clogging. When the screw rotates 9 clockwise, the spring force 6 through
the pressure plate 4, the diaphragm 3 and the rod 12 are transmitted to a reducing valve (parts 23, 24, 25), which, by descending, opens the passage of gas through the opening of the seat 13 to the working chamber of the body 1. Gas extraction is carried out through the hole f8 of the housing 1. Into the holes of the Pipes. 1/4" of the housing 1 is screwed into two pressure gauges, one shows the pressure in the cylinder, and the second - in the working chamber of the gearbox. The amount of pressure in the working chamber depends on the compression ratio of the spring 6. A safety valve is installed in the gearbox housing, adjusted to the beginning of the gas release at a pressure exceeding the maximum operating pressure by 1.2 times.