Bag filter

Abstract

The present invention discloses a bag type filter including a filtering basket, a filtering bag, a cylinder and several supporting legs. Said filtering bag is provided on the inner wall of the filtering basket which is fixed in the cylinder, the supporting legs are arranged on the bottom of the cylinder. The filter also includes an upper liquid feeding part, a lower press plate and a top cover. The upper liquid feeding part is provided with a locating fin on the inner wall and a liquid feeding por in the side surface, the upper liquid feeding part is fixed on the mouth of the cylinder via thelocating fin, and a liquid feeding flange is arranged at the liquid feeding port, the tope cover is sealed over the upper liquid feeding part, a lower liquid discharging part is arranged on the bottom of the cylinder and is provided with a liquid discharging port, and a liquid discharging flange is arranged at the liquid discharging port. The product of the invention has a reasonable structure and easily replaceable parts, and can avoid the inner leakage such that the quality of product is guaranteed. The filter is made entirely of plastics, which reduces the yield cost and use cost. It adopts UPVC material which makes the product work normally under the condition of acid-alkali and humidification.

Description

【Technical field】 [0001] The present invention relates to bag filters for liquid filtration, and more particularly to bag filters entirely made of plastic. 【technical background】 [0002] The bag filters currently produced are all welded and formed by stainless steel, and their structure is divided into three parts: barrel body, filter bag device and supporting feet. The liquid enters from the upper side port or port, and flows out from the bottom through the filter bag to achieve the filtering effect. [0003] The bag filter of this structure uses 304 stainless steel for water treatment, and 316L stainless steel is required for acid-base filtration, and the material cost is expensive. The parts are connected by welding, and if the welding scars are negligent, it is easy to oxidize and rust, and it is easy to cause internal leakage and affect the quality of the product. Because the relevant parts are all set on the barrel body, as long as there is a problem in any one plac...

AI Technical Summary

Problems solved by technology

[0003] The bag filter of this structure uses 304 stainless steel for water treatment, and 316L stainless steel is required for acid-base filtration, and the material cost is expensive

The parts are connected by welding. If the welding scar is negligent, it is easy to oxidize and rust, and it is easy to cause internal leakage and affect product quality.

Because the relevant parts are all set on the barrel body, as long as there is a problem in any one place, it cannot be repaired and the product must be scrapped

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