Cylindrical backwash purifying device

Abstract

The invention discloses a cylindrical backwash purifying device comprising a body and a plunger which is arranged in the body and can be connected in an axially sliding manner. The body is provided with a feeding passage and a discharge passage which are connected with a through hole. An outer circle at the front part of the plunger is recessed inwards, and together with the inner wall of the through hole, forms an annular empty cavity which is connected with the feeding passage. The plunger is axially provided with an L-shaped hole, which is connected with the discharge passage, in a direction from the front to the back. A recessed peripheral surface of the plunger is radially provided with a filter hole connected with the annular empty cavity and the L-shaped hole. The recessed peripheral surface of the plunger is connected with a detachable filter screen. A separating bar contacted with the inner wall of the through hole is axially arranged on the plunger and in the annular empty cavity. Semicircular grooves are arranged on the outer surface of the plunger and at two sides of the discharge passage. The cylindrical backwash purifying device has the advantages of reasonable design, simple structure, small volume, large effective filter area, good filter effect, no need of halt during cleaning or filter screen replacement, long continuous work time, high work efficiency and high product quality.

Description

technical field [0001] The invention relates to a fluid purification device, in particular to a cylindrical backwash purification device. Background technique [0002] At present, the single-cylindrical filters sold on the market and used in various industries have the disadvantages of large volume, small filtration area, and low filtration efficiency, and must be stopped for replacement when replacing the filter screen, which affects the continuous operation of production; double-cylindrical Compared with the single cylindrical filter, the filter screen can be replaced without stopping the machine, but there is a filter screen on the cylindrical surface of the inlet side, which still has the defects of small effective filtration area and low filtration efficiency. In addition, during the working process of the existing cylindrical filter, the material flow will form dead material somewhere, that is, the material that does not move, and these materials cannot be removed in t...

AI Technical Summary

Problems solved by technology

[0002] At present, the single-cylindrical filters sold on the market and used in various industries have the disadvantages of large volume, small filtration area, and low filtration efficiency, and must be stopped for replacement when replacing the filter screen, which affects the continuous operation of production; double-cylindrical Compared with the single cylindrical filter, the filter screen can be replaced without stopping the machine, but there is a filter screen on the cylindrical surface of the inlet side, which still has the defects of small effective filtration area and low filtration efficiency.

In addition, during the working process of the existing cylindrical filter, the material flow will form dead material somewhere, that is, the material that does not move, and these materials cannot be removed in time, which affects the filtering effect and product quality

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