Adjustable thread throttling refrigerating element

• Main Authors: LIU XIUFANG, ZHAO HONGLI, HOU YU, ZHANG XINGQUN, LAI TIANWEI, CHEN SHUANGTAO
• Format: Patent
• Language: Chinese; English
• Published: 07.05.2014
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COMBINED HEATING AND REFRIGERATION SYSTEMS; DEVICES FOR VENTING OR AERATING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; TAPS; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

The invention discloses an adjustable thread throttling refrigerating element, which comprises a valve rod and a valve body, wherein the valve rod and the valve body are respectively processed with an external thread and an internal thread which are mutually matched, the lower surface of the external thread and the upper surface of the internal thread are matched to form a thread throttling flow passage, and the upper surface of the external thread and the lower surface of the internal thread are attached to form a flow passage sealing surface through the pressure difference of the upper and lower parts of the valve rod. By rotating or descending the valve rod, the matching length of the external thread and the internal thread is changed, so the stepless adjusting of the length of the thread throttling flow passage is realized. The top of the interior of the valve body is provided with a plurality of layers of sealing packings, and the top of the valve body is provided with a valve cover for pressing the laye