Ultrafiltration membrane filter element with pre-membrane gas exhaust device

Abstract

The invention discloses an ultrafiltration membrane filter element with a before-membrane gas exhaust device, and belongs to the field of ultrafiltration membrane filter elements, the ultrafiltration membrane filter element comprises a mounting plate, a mounting cylinder is mounted on the top surface of the mounting plate through a mounting mechanism, one end mounted in the mounting cylinder is in threaded connection with the inner side wall of a cylinder cover, a water inlet pipe is arranged at one end of the cylinder cover, and a water outlet pipe is arranged at the other end of the cylinder cover. A second water outlet pipe is arranged at the other end of the mounting cylinder, a filter element is mounted in the mounting cylinder, and an exhaust mechanism is fixedly connected to one end of the filter element; and the other end of the filter element is rotationally connected with a limiting mechanism. According to the ultrafiltration membrane filter element with the pre-membrane gas exhaust device, the exhaust cover is fixedly connected to one end of the filter element, and the first water tank is formed in the side wall of the filter element, so that gas resistance on the side wall of an ultrafiltration membrane is reduced; and the filter element is driven by the motor to rotate in the mounting cylinder, so that the filter element is conveniently cleaned.

Description

technical field [0001] The invention belongs to the technical field of ultrafiltration membrane filter elements, in particular to an ultrafiltration membrane filter element with a pre-membrane gas exhaust device. Background technique [0002] The ultrafiltration membrane is a polymer semipermeable membrane used in the ultrafiltration process to separate polymer colloids or suspended particles of a certain size from the solution. The ultrafiltration membrane screening process is driven by pressure difference. The high-precision cut-off performance of the filter membrane is a membrane separation technology for solid-liquid separation or fractionation of substances with different relative molecular masses. Under a certain pressure, when the mixed solution containing high-molecular solute and low-molecular solute flows through the surface of the membrane, the solvent and low-molecular solute (such as inorganic salt) that are smaller than the membrane pores pass through the membr...

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Problems solved by technology

[0003] However, in the process of ultrafiltration membrane filter element filtration, often due to the morphology and structure of the ultrafiltration membrane, it is difficult to remove the gas in front of the ultrafiltration membrane, especially after the ultrafiltration membrane is soaked in water, the gas in front of the membrane is completely blocked. The gas in front of the ultrafiltration membrane forms air resistance in the ultrafiltration membrane element, making it difficult for the interior of the ultrafiltration membrane to be completely submerged in water, which affects the utilization rate of the ultrafiltration membrane. Cleaning the ultrafiltration membrane element will affect the performance and life of the ultrafiltration membrane, and the common cleaning method is often to rinse with water, but the nature of the liquid treated by the ultrafiltration membrane element is different, resulting in insufficient cleaning , thereby affecting the filtering effect of re-use

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