| CPC F04D 9/04 (2013.01) [F04D 1/00 (2013.01); F04D 9/02 (2013.01)] | 7 Claims |
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1. A quick no-water startup apparatus for a centrifugal pump, wherein the apparatus has a symmetrical structure and comprising, from top to bottom in sequence, a plurality of one-way passages, a self-priming chamber housing, sliding devices, a self-priming chamber, three chamber partition plates, a concave-convex impeller, inlet channels connected to the self-priming chamber, a spring device of an upper-side x-shaped gas-liquid separation device, the upper-side x-shaped gas-liquid separation device, upper and middle-side gas-liquid separation device connecting shafts, a middle-side gas-liquid separation device, lower-side backflow-type gas-liquid separation devices, v-shaped backflow channels, an inverted v-shaped inlet channel, and an inlet;
the plurality of one-way passages are mounted on the self-priming chamber housing and are symmetrically arranged about a central axis of the quick no-water startup apparatus for the centrifugal pump; a rotating wheel, an upper cover plate, a first spring, a rubber connector, and a one-way passage baffle are arranged on each side of the plurality of one-way passages, wherein the upper cover plate is a rotatable cover plate and rotates by the rotating wheel, the one-way passage baffle is a fixed plate, the first spring is connected to the upper cover plate and the one-way passage baffle, and the rubber connector is mounted on a top end of the upper cover plate;
a plurality of combinations each comprising a slideway and one of the sliding devices are arranged on the self-priming chamber housing; each of the sliding devices is provided with an outer cover plate, sliding wheels, a third spring, a near slideway baffle, a far slideway baffle, and a baffle sliding rail, wherein the far slideway baffle slides in the baffle sliding rail, the sliding wheels slide in the slideway and are attached to the outer cover plate and the far slideway baffle, the outer cover plate and the far slideway baffle slide with the sliding wheels, and the near slideway baffle is a fixed baffle and is integrally formed with the baffle sliding rail;
the three chamber partition plates are fixed in the self-priming chamber, the chamber partition plates divide the self-priming chamber into three cavities, and each of the chamber partition plates is provided with a second spring and a rolling axial bead; the concave-convex impeller is provided with an external drive shaft and an axial bead sliding rail; the external drive shaft is externally connected to a motor and is driven by the motor; the motor rotates forward; the axial bead sliding rail is arranged along a periphery of the concave-convex impeller, and the rolling axial beads at the chamber partition plates run on the axial bead sliding rail;
a one-way inlet channel passage is disposed in one of the inlet channels connected to one side of the self-priming chamber, and another one of the inlet channels on the other side of the self-priming chamber has an identical structure;
the spring device of the upper-side x-shaped gas-liquid separation device is disposed between the inlet channels on the two sides; the spring device of the upper-side x-shaped gas-liquid separation device is provided with a smaller sliding device, an upper-side baffle, a fourth spring, and a lower-side baffle, and is provided with an edge baffle, a sliding rail, and rollers on each side, wherein the upper-side baffle is a fixed baffle; the lower-side baffle is a movable baffle, and the lower-side baffle is tightly joined with the fourth spring and the rollers; the rollers run in the sliding rail, and the sliding rail is arranged in the edge baffle; the smaller sliding device has an identical structure as the sliding device;
the upper-side x-shaped gas-liquid separation device is in an irregular x shape and is symmetrical about the central axis of the quick no-water startup apparatus for the centrifugal pump; each side of the upper-side x-shaped gas-liquid separation device is provided with an upper-side rotating wheel, an upper-side first-stage impeller, first suction inlets, a first-stage channel, an upper-side second-stage impeller, a spring connecting shaft, a lower-side partition plate, a lower-side rotating shaft, an upper-side arm rod, a second-stage channel, a lower-side first-stage impeller, and a lower-side second-stage impeller, wherein the upper-side arm rod is connected to the upper-side rotating wheel and the rollers of the spring device of the upper-side x-shaped gas-liquid separation device, and is capable of moving up and down; the upper-side first-stage impeller and the upper-side second-stage impeller are mounted in the upper-side arm rod; the lower-side first-stage impeller and the lower-side second-stage impeller are mounted in the lower-side partition plate; a plurality of the first suction inlets are arranged on the first-stage channel and are symmetrically distributed about a central axis of the first-stage channel; a top end of the first-stage channel is connected to the upper-side first-stage impeller and a bottom end of the first-stage channel is connected to the lower-side first-stage impeller; a plurality of the first suction inlets are arranged on the second-stage channel and are symmetrically distributed about a central axis of the second-stage channel; a top end of the second-stage channel is connected to the upper-side second-stage impeller and a bottom end of the second-stage channel is connected to the lower-side second-stage impeller; the spring connecting shaft is connected to the lower-side baffle; the lower-side partition plate is connected to the lower-side rotating shaft and the spring connecting shaft, and is capable of moving up and down;
the upper and middle-side gas-liquid separation device connecting shafts are symmetrically arranged about the central axis of the quick no-water startup apparatus for the centrifugal pump; an impeller and a spring are sequentially arranged from top to bottom in each upper and middle-side gas-liquid separation device connecting shaft;
the middle-side gas-liquid separation device is provided with a top cover plate, second suction inlets, upper pistons, lower pistons, three inlet cavities, a bottom cover plate, two bottom cover plate impellers, fixed shaft rods, and wing tips, wherein the upper pistons are connected to the top cover plate and the lower pistons are connected to the bottom cover plate; the three inlet cavities are uniformly distributed in a space between the top cover plate and the bottom cover plate; ten second suction inlets, five on each side, are provided for each of the inlet cavities and are symmetrically distributed about a central axis of the inlet cavity; the two bottom cover plate impellers are arranged in the bottom cover plate and are symmetrically distributed about a central axis of the bottom cover plate; the wing tips are on two ends of the bottom cover plate; top ends of the fixed shaft rods are connected to the bottom cover plate and bottom ends of the fixed shaft rods are connected to the lower-side backflow-type gas-liquid separation devices; a fixed shaft rod impeller is arranged in each of the fixed shaft rods;
the lower-side backflow-type gas-liquid separation devices are symmetrically arranged about the central axis of the quick no-water startup apparatus for the centrifugal pump; each lower-side backflow-type gas-liquid separation device is provided with an upper-stage impeller, a lower-stage impeller, an upper-side cover plate, and a lower-side cover plate, wherein an upper-side penetrating cover plate for a fluid to pass therethrough is arranged on the upper-side cover plate and at a position corresponding to the upper-stage impeller; a lower-side penetrating cover plate for a fluid to pass therethrough is arranged on the lower-side cover plate and at a position corresponding to the lower-stage impeller;
each of the v-shaped backflow channels and the v-shaped inlet channel is provided with springs, backflow channel rotating wheels, backflow channel rubber connectors, and backflow channel cover plates, wherein the backflow channel cover plates are rotatable cover plates and are rotatable by the backflow channel rotating wheels, the springs are connected to the backflow channel cover plates, and the backflow channel rubber connectors are mounted on top ends of the backflow channel cover plates.
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