| 摘要 |
A filter for filtering a particle-containing medium and having nozzles includes a housing having an inlet opening and an outlet opening for the cleaning fluid, the openings forming between them a passage defined by a wall, a valve body having a valve head and a valve rod, the valve rod being arranged to be moved in the interior of the passage between a first end position and a second end position to control the flow of the cleaning fluid toward the partition plate and/or the filter devices, the outlet opening forming a valve seat adapted to cooperate with the valve head in the first position to prevent outflow of the cleaning fluid, and a spring for generating a bias of the valve body in a direction toward the first end position. The valve body also includes a piston device acting as a hydraulic piston and arranged between the inlet opening and the outlet opening and adapted to generate a pressure loss in the cleaning fluid during its flow from the inlet opening and through the passage, whereby the valve body is moved in a direction toward the second end position to allow outflow of the cleaning fluid through the outlet opening.
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