Filter

Abstract

The invention provides a filter. The filter comprises an exhaust device, a cylinder, a filter element and a base. The exhaust device is connected to an opening in the top of the cylinder in a welded mode, the main body of the exhaust device is cylindrical, the exhaust device comprises an upstream exhaust port, an upstream exhaust port plug, a downstream exhaust port and a downstream exhaust port plug, and the upstream exhaust port and the downstream exhaust port are arranged side by side. According to the exhaust device, upstream exhaust is achieved through the upstream exhaust port communicated with the space between the periphery of the filter element and the inner wall of the cylinder, downstream exhaust is achieved through the downstream exhaust port in fluid communication with an upper connector at the upper end of the filter element and the inside of the filter element, and therefore a better exhaust effect can be provided. The upstream exhaust port and the downstream exhaust port of the exhaust device are integrated, the structure is simple, and exhaust operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of filter devices, and in particular relates to a filter capable of upstream and downstream exhaust. Background technique [0002] As a purification and impurity removal device, filters have been widely used in fluid treatment in food, beverage, pharmaceutical, biotechnology, semiconductor and other industries. When the filter is filtering and purifying the fluid, the particulate impurities in the fluid are trapped on the filter medium, and the clean fluid is discharged from the outlet. [0003] However, during the filtration process, gas is easily trapped inside the filter, and part of the space inside the filter is occupied by the trapped gas, which makes it difficult for the fluid to be filtered to flow into the filter again, and the filtration rate is reduced; in addition, the gas existing in the filter may also It flows into the downstream pipeline together with the clean filtrate, affecting the qualit...

AI Technical Summary

Problems solved by technology

The filter can achieve downstream exhaust, but the gas accumulated in the upstream chamber cannot be discharged in time, so that the unfiltered liquid is not easy to flow into the upstream chamber again. As the filtration progresses, the filtration rate of the filter decreases, and the gas in the upstream chamber It may also enter the downstream cavity with the fluid, and finally reach the downstream pipeline with the clean filtrate, so the exhaust effect of the filter is not optimal

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