Pressure-control two-way self-cleaning slit-type sewage separation system

Abstract

The invention discloses a pressure-control two-way self-cleaning slit-type sewage separation system. A filtering piece (25) and a base (22) are connected, a scraper (26) and an impeller (28) are connected, the filtering piece (25) and the scraper (26) are stacked in a spaced mode, a motor shaft (27) is connected with the impeller (28), a water outlet cylinder (21), a speed reduction motor (15) and the base (22) are connected, a one-way valve (18) is disposed in the water outlet cylinder (21), a spring (19) is disposed between the one-way valve (18) and the water outlet cylinder (21), a three-way electromagnetic valve (8) is connected with a water outlet of the water outlet cylinder (21) and an outlet of a water pump (7) through water pipes (9) respectively, a water inlet of the water pump (7) extends into separation water (3) through a water pipe (9), a position switch (16) is installed on the water outlet cylinder (21), and a pressure switch (40) is installed on a piston (4). The system is used for separating sewage in a sewage box of a sewer dredging vehicle, increasing sewage separation speed and improving sewage separation quality.

Description

technical field [0001] The invention relates to a sewage separation system, in particular to a pressure-controlled two-way self-cleaning gap type sewage separation system. Background technique [0002] The sewer dredging vehicle with the piston type sewage separation system separates sewage with the gap of the piston; the piston type sewage separation system includes a hydraulic cylinder, a piston and a sewage tank, and the piston separates the separated water and sewage in the sewage tank of the sewer dredging vehicle; the hydraulic cylinder does not extend , the piston does not move to the right, the piston does not squeeze the sewage, and the sewage does not separate; when the hydraulic cylinder is extended, the hydraulic cylinder pushes the piston to move to the right, the piston squeezes the sewage, and part of the water in the sewage flows into the left side of the piston through the gap of the piston, becoming Separation of water, while the concentration of sewage inc...

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Problems solved by technology

[0003] The piston type sewage separation system uses the piston gap to separate the sewage in the sewage tank. The piston gap is the gap between the piston and the sewage tank joint surface. Since the piston gap is only a part of the outer diameter of the piston, its length is small, which affects the sewage. Separation speed; in addition, it is difficult to control the width of the piston gap through processing, and it is difficult to form a gap of equal width, which affects the separation quality of sewage

[0004] In the sewer dredging vehicle with a piston sewage separation system, the sewage can be separated by using a gap type sewage separation device, but since the gap type sewage separation device has no self-cleaning function, mud, sand, grass, branches, leaves, and foam in the sewage Plastic, plastic sheets, etc. will block the gap, making it difficult to apply the gap-type sewage separation device in the sewer dredging vehicle

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