2 results about "Membrane filter" patented technology

The invention provides a filtering method for suspended matters in water. The method comprises the following steps: clamping a microfiltration membrane with a pair of tweezers, putting the microfiltration membrane into a constant-weight weighing bottle, transferring the microfiltration membrane to a baking oven for drying, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.2 mg; correctly putting the obtained microfiltration membrane with a constant weight on the filter membrane pallet of a filter membrane filter, covering a matching funnel, fixing the funnel with a clip, wetting the microfiltration membrane with distilled water and carrying out continuous suction filtration; and weighing a sample for suction filtration, continuously washing the sample with distilled water three times, continuing suction filtration to remove a trace amount of moisture, taking the microfiltration membrane out, putting the microfiltration membrane in the original constant-weight weighing bottle, transferring the microfiltration membrane to the baking oven for drying, then transferring the microfiltration membrane into a drier, then cooling the microfiltration membrane to room temperature, weighing the weight of the microfiltration membrane and carrying out repeated drying, cooling and weighing until the difference between weight values obtained in two weighing is less than 0.4 mg. According to the invention, primary drying time is prolonged, drying frequency is reduced, time for drying is shortened, and work efficiency is improved.

The invention discloses a manufacturing method for an integrated water purifier capable of achieving grading pollution discharge. The water purifier comprises a mechanical filter device and a nanofiltration membrane filtering device, and further comprises a reverse osmosis (RO) membrane filtering device, wherein the junction of a barrel body and an upper sealing head of a closed container is provided with bolts and nuts, an upper annular baffle is arranged in the closed container and provided with three circular water outlet clamping pipes, three water inlet clamping pipes are arranged in the bottom of the closed container, RO membrane filter element membrane shells are arranged on the left side and the right side and in the middle of the closed container, RO membranes are arranged in the membrane shells, first silicone sealing rings for raw water are arranged at water inlets of the RO membranes, the middles of the membrane shells are provided with water generating pipes, one ends of the water generating pipes are provided with second silicone sealing rings, the peripheries of the water generating pipes are provided with concentrated water channels, the bottom of the closed container is provided with a water inlet, and the top of the closed container is provided with a water outlet; a water outlet of the nanofiltration membrane filtering device is communicated with the water inlet of the reverse osmosis (RO) membrane filtering device. The water purifier is economical and practical.