2results about How to "Realize the drainage function" patented technology

The upper part of the screw electric submersible pump can be positively pressed to prevent the flexible valve from falling out, and relates to the technical field of oil pumping pump tools, which comprises a valve cylinder fixed on the upper port of the screw pump, a detachable lining ring connected in the valve cylinder, a high-molecular flexible valve plate fixed on the lining ring, and a flow passage is arranged in the center of the high-molecular flexible valve plate, and the center of the high-molecular flexible valve plate is convex upward and the flow passage is closed in the shutdown state. The utility model solves the problems that in the traditional technology, the impurities and other foreign matters in the oil pipe fall back into the pump when the screw pump unit is in the shutdown state, causing the blockage of the pump, and when the existing screw pump needs to be positively pressed through the oil pipe, the existing valve group structure is limited, and the pressure test function cannot be realized.

The utility model discloses a spraying type chimney outlet dust falling device which comprises a smoke outlet pipe (1), a smoke outlet portion (2) is formed at the end of the smoke outlet pipe (1), a dust removing pipe (3) is arranged outside the smoke outlet portion (2), a containing cavity is formed between the dust removing pipe (3) and the smoke outlet portion (2), a liquid collecting groove (4) is formed in the containing cavity, and a loading and unloading opening (5) used for loading and unloading the liquid collecting groove (4) is formed in one side of the dust removing pipe (3). A flow guide part (6) is arranged in the middle of the dust removal pipe (3), the two ends of the flow guide part (6) are located over the liquid collecting tanks (4) on the two sides respectively, a flue gas channel for flue gas to pass is formed between the flow guide part (6) and the dust removal pipe (3), a smoke exhaust port (7) is formed in the top of the dust removal pipe (3), and a plurality of first spraying heads (8) are annularly distributed on the dust removal pipe (3) around the smoke exhaust port (7). And the spraying direction of the first spraying head (8) faces the inner end of the smoke outlet (7). The device has the advantages of being good in working stability and convenient to disassemble and assemble.