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FLOW CONTROL APPARATUS

  • US 20190309862A1
  • Filed: 06/21/2017
  • Published: 10/10/2019
  • Est. Priority Date: 07/12/2016
  • Status: Active Grant
First Claim
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1. A flow rate control device, comprising a housing, a valve body assembly, wherein the housing has a mounting chamber, and the valve body assembly is at least partially accommodated in the mounting chamber, the valve body assembly comprises a first valve plate, a second valve plate and a transmission part, the housing has a position-limiting protrusion and an accommodating portion at a bottom side of the mounting chamber, the first valve plate is at least partially located at the accommodating portion, the position-limiting protrusion is configured to limit the first valve plate in a circumferential direction, a lower surface of the second valve plate is arranged at least partially opposite to the position-limiting protrusion, and the lower surface of the second valve plate is in surface contact with an upper surface of the first valve plate in a sealed manner,the housing has at least one flow hole at the bottom side of the mounting chamber, the first valve plate has at least one flow valve port corresponding to and in communication with the flow hole, the second valve plate is relatively fixedly connected to the transmission part, and driven by the transmission part, the second valve plate opens or closes the flow valve port of the first valve plate and/or adjusts an opening degree of the flow valve port;

  • the transmission part comprises a first transmission portion and a second transmission portion, and in a vertical direction perpendicular to the first valve plate, the first transmission portion and the second transmission portion are located at two opposite ends of the transmission part, the first transmission portion is assembled with an upper side of the second valve plate, and the housing has a through hole corresponding to the second transmission portion, the second transmission portion passes through the through hole and extends out of the housing, andthe transmission part comprises a position-limiting portion located in the mounting chamber, the housing forms a position-limiting recess, a first block portion and a second block portion, and the position-limiting portion is at least partially located in the position-limiting recess, and when the transmission part is located in the first position, the position-limiting portion abuts against the first block portion, and when the transmission part rotates to the second position, the position-limiting portion abuts against the second block portion.

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