Improved sealing structure of underwater suspended semi submersible vertical turbine pump

An improved underwater suspended semi submersible vertical turbine pump sealing structure, comprising a space guide vane. The top of the inner cavity of the space guide vane is provided with a soft packing sealing component, and the bottom of the space guide vane is provided with an impeller. The top of the space guide vane is provided with a long axis, and the bottom of the long axis passes through the space guide vane, the soft packing sealing component, and the impeller in sequence from top to bottom. The soft packing sealing component includes a packing chamber, and second O-ring seals are provided on both sides of the top of the packing chamber. The first bolt is provided on both sides of the top of the packing chamber, and the top of the first bolt penetrates into the interior of the space guide vane. This technical method improves the acid and alkali corrosion resistance of the soft packing sealing component by setting up polymer soft packing, effectively preventing particles from entering the soft packing sealing component and causing damage to the component. It extends the service life of the soft packing sealing component and is suitable for promotion and use.

Technical requirements: 1. Improved sealing structure for underwater suspended semi submersible vertical turbine pump, comprising a space guide vane (1), characterized in that: the top of the inner cavity of the space guide vane (1) is provided with a soft packing sealing component (13), the bottom of the space guide vane (1) is provided with an impeller (4), the top of the space guide vane (1) is provided with a long axis (10), and the bottom of the long axis (10) passes through the space guide vane (1), the soft packing sealing component (13), and the impeller (4) from top to bottom, and the soft packing sealing component (13) comprises a packing chamber (22), and the top of the packing chamber (22) is provided with second elements on both sides of the top. O-ring (7), first bolts (14) are provided on both sides of the top of the packing chamber (22), and the top of the first bolt (14) penetrates into the interior of the space guide vane (1). A screw plug (15) is provided on the left side of the packing chamber (22), and the packing chamber (22) Both sides of the bottom are equipped with gaskets (17), and the bottom of the gasket (17) is equipped with a second bolt (20). The top of the second bolt (20) penetrates the gasket (17) and extends into the interior of the packing chamber (22). Polymer soft fillers (6) are installed on both sides of the surface of the packing chamber (22). The top and bottom of the polymer soft fillers (6) are equipped with second skeleton seals (21), and the bottom of the second skeleton seal (21) is equipped with threaded gaskets (16). The connection between the bottom of the inner cavity of the packing chamber (22) and the long axis (10) is equipped with a first O-ring (5). The two sides of the top of the inner cavity of the space guide vane (1) are connected to the long axis (10) on both sides, and a first shaft sleeve (12) is provided. The bottom of the inner cavity of the first shaft sleeve (12) is connected to the long axis (10) on both sides, and a third O-ring is provided. The first shaft sleeve (12) at the top of the left side of the long axis (10) is connected to the space guide vane (1) A second flat key (11) and a first flat key (9) are arranged in sequence from top to bottom at the connection point of the space guide vane (1). The first skeleton seal (8) is arranged on both sides of the top surface of the space guide vane (1). A second shaft sleeve (18) is arranged at the connection point between the bottom of the inner side of the soft packing seal component (13) and the long axis (10), and a fastening screw (19) is arranged on the outer side of the second shaft sleeve (18).