Air-throttling device and air supply method for shell-breaking cylinder

Abstract

The invention relates to a novel air-saving technology, and aims to provide an air-saving device and an air supply method for a shell-breaking cylinder. The air supply pipe of the device includes an air inlet pipe and an air outlet pipe; it also includes a two-position three-way solenoid valve, an external pilot pipe, a pressure regulating valve and a time relay; the two-position three-way solenoid valve is respectively provided with P holes, A holes and R hole, the outlet pipe is connected to hole A, the inlet pipe is connected to hole P, and the pressure regulating valve is respectively connected to hole R and the inlet pipe through the pipeline; the external pilot pipe is respectively connected to the two-position three-way solenoid valve and the inlet pipe; provided by the present invention The new shelling cylinder air-saving device does not change the shelling process requirements of the original shelling cylinder, but at the same time improves the gas consumption efficiency of the shelling cylinder and saves compressed air, thereby achieving the purpose of saving energy and reducing consumption; it can be easily and conveniently connected in parallel to each electrolytic On the air supply branch pipe of the aluminum groove shell shell cylinder.

Description

technical field [0001] The invention relates to a novel air-saving device, in particular to an air-saving device and an air supply method for a shelling cylinder. Background technique [0002] The air consumption of shelling cylinders in the electrolytic aluminum industry accounts for about 20% of the compressed air consumption of the entire factory, which has a crucial impact on the energy consumption of the entire factory. Pneumatic systems play an important role in industrial automation due to their advantages of low cost, no pollution, easy maintenance, easy adjustment of output force and working speed, etc., but the energy consumption of shelling cylinders accounts for a large proportion of the total energy consumption of pneumatic systems The utilization rate is not high. Today, when the energy problem is becoming more and more prominent, the energy saving of the shelling cylinder is of great significance to the energy saving and consumption reduction of the electroly...

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Problems solved by technology

[0003] At present, the throttle valve of the shelling cylinder existing in China changes the pressure of the shelling cylinder into a two-stage output. When the cylinder is stretched out for shelling, it outputs high-pressure gas, and when it is retracted, it outputs low-pressure gas. Although it can greatly reduce the use of compressed air amount, to achieve the purpose of energy saving, but because the pressure of the input compressed air becomes lower when the shelling cylinder is retracted, the retraction force of the shelling cylinder becomes smaller and the speed becomes slower, and more electrolytic aluminum liquid is easily bonded to the hammer head. The frequency increases and the number of jamming increases, which affects the shelling process of the shelling cylinder

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