Sectional pressure relief type filling valve and filling method thereof

Abstract

The invention discloses a sectional pressure relief type filling valve and a filling method thereof. The sectional pressure relief type filling valve comprises a valve body, wherein the valve body is provided with a feed port, a discharge port, a first exhaust passage and a second exhaust passage; a control valve is arranged at the discharge port; the first exhaust passage is communicated with a sectional pressure relief control device; the second exhaust passage is communicated with the outside atmosphere; a first control switch for controlling the first exhaust passage to open or close is arranged in the first exhaust passage; and a second control switch for controlling the second exhaust passage to open or close is arranged in the second exhaust passage. The two exhaust passages can be successively opened by orderly pressing the two control switches, which realizes that the gas pressure in the bottle body sectionally drops, thereby ensuring pressure difference for pressure relief in each section is kept within a proper range and the filled material has stable filling quality. Therefore, the invention makes medium temperature filling possible by increasing back pressure and filling temperature, and a bottle warming machine in low temperature filling can be omitted by adopting the medium temperature filling, thereby achieving the effects of energy saving and environmental protection.

Description

technical field [0001] The invention relates to the field technology of filling valves for filling equipment, in particular to a segmented pressure relief filling valve especially suitable for medium temperature filling. Background technique [0002] At present, the filling method for gas-containing materials such as CO2 gas is: set the back pressure below 3Bar during filling, and the filling temperature of the material is at a low temperature of 0°-8°, and then combine the bottle warmer to Avoid the water vapor outside the bottle from affecting the subsequent coding and packaging to ensure the filling quality. Although this traditional filling method can realize the basic function of filling gas-containing materials, it is found to have many shortcomings in actual use, especially it needs to use a bottle warmer, not only the filling valve The structure is complex, the operation is cumbersome, the cost is high, and the energy consumption is large, so it is not energy-saving...

AI Technical Summary

Problems solved by technology

Although this traditional filling method can realize the basic function of filling gas-containing materials, it is found to have many shortcomings in actual use, especially it needs to use a bott

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