Liquid injection automatic control valve

Abstract

The invention discloses a liquid injection automatic control valve, which comprises a hollow valve body (1), a valve rear seat (6) and a valve front seat (2), wherein a valve cavity in the valve body is formed between the valve front seat and the valve rear seat; and a valve ball (5) is arranged in the valve cavity, is connected with a floating ball (12) in a box container through a valve rod (11), and can ascend and hermetically seal a ball seat at the lower end of the valve rear seat under the buoyancy action of the floating ball or can descend and fall into a valve cabin under the actions of liquid negative pressure and gravity. The valve can be widely suitable for all box containers such as an oil tank, a water tower, a water closet water tank, a solar water heater water tank and the like, can be automatically closed after injected liquid reaches a set height without the control of manpower, a lever floating ball valve and an electronic valve during liquid injection, and overcomes the defects of complex structures, high cost, high damage possibility, difficulty in maintenance and inconvenience of usage of all valves of the type in the market at present.

Description

technical field [0001] The present invention relates to a liquid control valve, in particular to an automatic control valve for liquid filling, which is used in tanks such as water towers, oil tanks, toilet water tanks, solar water heater The valve closes automatically when the liquid reaches the set position, and opens again when the liquid is released. Background technique [0002] When tanks such as oil tanks, water towers, toilet tanks, and solar water heater tanks are filled with liquid, in order to immediately close the valve and prevent liquid leakage, most of them adopt methods such as installing electronic valves, return pipes, lever float valves, and manual guards. Its structure is complicated, and the installation and maintenance costs are relatively high. [0003] Chemical and oil tanks basically adopt electronic valve control system when filling liquid, which is not only complicated in structure, but also has increased difficulty in fire prevention due to circu...

AI Technical Summary

Problems solved by technology

[0005] Commonly used solar water heater tanks are filled with water through the return pipe to give an alarm, and then the method of manually closing the water supply valve is adopted. The disadvantage is that the installation is complicated, two water pipes are required, and the maintenance is complicated. Manual care is required when filling the water, which is time-consuming and laborious. If you don't pay attention, it will cause water leakage and other accidents. Secondly, the junction of the pipeline and the water tank is prone to winter in winter, causing troubles that the water will not go up and down.

[0006] Existing automatic control valves for water filling of solar water heater tanks, one requires power supply, one requires dual water passages in and out, and the other requires an additional water bucket with a volume of about three liters. The common feature is that the structure is complex, expensive, and easily damaged. , basically no promotion value

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