Emptying water drain valve for solar water heater and clutch thereof

Abstract

The invention discloses an emptying water drain valve for a solar water heater, which comprises a valve body and a valve rod. The valve rod is arranged in the valve body; and the valve rod is a hollow cylinder with two partition bodies therein for partitioning the valve rod into upper, middle and lower three sections, wherein the upper and middle two sections are provided with through holes whilethe lower section is connected with the clutch. The valve rod is provided with three valve sleeves; an upper valve sleeve is an emptying valve sleeve; a middle valve sleeve is a water drain valve sleeve; a lower valve sleeve is a sealing valve sleeve; inner edges of the valve sleeves are fixedly connected to the periphery of the valve rod while outer edges thereof are fixedly connected to a cavity wall of the valve body; an upper cavity between the emptying valve sleeve and the valve body form an upper water emptying cavity, which is connected with an upper water introducing pipe; a water drain cavity is formed between the emptying valve sleeve and the water drain valve sleeve, and is connected with a water outlet pipe; and a water inlet cavity is formed between the water drain valve sleeve and the sealing valve sleeve, and is connected with a water drain pipe. The emptying water drain valve for the solar water heater has anti-scale resistance and abrasion resistance, good sealing performance and low manufacturing cost.

Description

technical field [0001] The invention relates to a valve and a clutch device for controlling the operation of the valve. Background technique [0002] For water towers and reservoirs on high-rise buildings, especially solar water heaters, the antifreeze and normal use of the water pipes in winter is a problem that must be solved. The best solution to the problem is to empty the water in the pipes after each use . The choice of the emptying technology scheme determines the effect of emptying and water release, as well as the performance and life of the device. [0003] Most of the emptying valves in the prior art adopt electromagnetic exchange valves, but mechanical ones with reliable performance are rare. However, whether it is an electromagnetic type or a mechanical type, the core of the technology is blocking the valve. The pressure spool will wear out, and the rubber ring of the mechanical valve is also prone to wear and leakage, which will affect the water discharge eff...

AI Technical Summary

Problems solved by technology

However, whether it is an electromagnetic type or a mechanical type, the core of the technology is blocking the valve. The pressure spool will wear out, and the rubber ring of the mechanical valve is also prone to wear and leakage, which will affect the water discharge effect; the scale in the solar water heater is also caused. The fatal factors of spool damage and failure to close, and the cost of electromagnetic exchange valve is relatively high

Images