Reversing valve and rotating valve core thereof
A technology of rotating spool and reversing valve, applied in valve details, multi-way valves, valve devices, etc., can solve the problem of many components, achieve low production cost, ensure fit, and increase sealing performance
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[0054]Example 1
[0055] see figure 1 , Figure 5 , is a schematic diagram of the structure of the reversing valve. The reversing valve is mainly used for valve bodies that require two or more pilot chambers to control, especially in oxygen generators. The reversing valve in this embodiment includes a rotary valve core 1 , a valve body 4 and a driving device 2 , wherein the rotary valve core 1 includes an air inlet 105 , a pressure relief port 104 and an air intake port, please refer to them together Figures 10 to 15 , the outer contour of the rotary valve core 1 is a cone shape. Of course, the rotary valve core 1 is not limited to a cone shape, but can also be a cylindrical shape or other shapes. The top of the rotary valve core 1 is provided with a mounting hole 101. The hole 101 extends downward from the upper surface 108 of the rotary valve core and along the central axis of the rotary valve core, and is a blind hole for connecting the output shaft of the driving device...
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[0083] Example 2
[0084] On the basis of Example 1, please refer to Figure 9 and Figure 18 , the valve body of the reversing valve of this embodiment includes an upper cover plate 401 and a lower cover plate 402, wherein the upper cover plate 401 has a downwardly extending annular protrusion above the corresponding pilot cavity, and the annular The side wall air-induction channel 419 is provided on the protrusion. It should also be noted that the side wall air-induction channel 419 on the annular protrusion and the aforementioned air-induction port and pressure relief port-104 are relative to the rotary valve core 1. The height of the bottom is equal to ensure that during the rotation of the rotary valve core 1 in the inner cavity 407, the air inlet and the pressure relief port 104 can be periodically communicated with the inlet of the side wall air inlet channel 419 for pressurization, or Depressurize. The compressor air bleed channel 403, left air supply channel 404, r...
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