Low-water-level, single-opening, double-suction and self-balance submersible pump

Abstract

The invention discloses a low-water-level, single-opening, double-suction and self-balance submersible pump and belongs to the technical field of water pumps. The low-water-level, single-opening, double-suction and self-balance submersible pump has the beneficial effect that self balance of the submersible pump is facilitated during work. According to the technical scheme, the low-water-level, single-opening, double-suction and self-balance submersible pump comprises an impeller section and a motor section; a suction section is arranged at the bottom of the impeller section; a motor shaft in the motor section penetrates the suction section to be connected with the impeller section; a spherical suction cavity communicating with the impeller section is formed in the middle in the suction section; the motor shaft vertically penetrates the spherical suction cavity; a fixed sleeve which is vertically fixed is arranged in the spherical suction cavity; the motor shaft is located in the fixedsleeve; suction channels communicating with the middle position of the spherical suction cavity are arranged on the side face of the outer circumference of the suction section in a circumferential arrayed manner; a throttling ring is arranged in the spherical suction cavity; an arc face matched with the wall face of the spherical suction cavity is arranged on the side face of the outer circumference of the throttling ring; a clearance is arranged between the inner side face of the throttling ring and the fixing sleeve; and the diameter of the outer ring of the top of the throttling ring is equal to the diameter of the spherical suction cavity.

Description

technical field [0001] The invention relates to the technical field of water pumps, in particular to a low-water-level single-port double-suction self-balancing submersible pump. Background technique [0002] Submersible pump is an important equipment for deep well water extraction. When in use, the whole unit dives into the water and extracts groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and fountain landscape. [0003] For example, in the process of application and coal mining, as the depth of coal mining continues to increase, the displacement of coal mines will also increase, so a submersible pump with a large flow is required more, and the suction water level of the submersible pump is required to be low. At present, double-suction submersible pumps are widely used in coal mine drainage. The conventional double-suction submersible pump has a suction port at the upper end...

AI Technical Summary

Problems solved by technology

The conventional double-suction submersible pump has a suction port at the upper end and the lower end of the submersible pump. Since the upper end of the submersible pump is provided with a suction port, when the conventional double-suction submersible pump is working, the entire submersible pump needs to be installed Below the liquid level, so the requirements for the water level are very high. When the water level is lower than the upper end of the submersible pump when the suction port is provided, the whole electric pump will not work, thus bringing many difficulties to mine production. The application publication number is CN104405649A in China The patent discloses a single-suction double-suction self-balancing submersible pump, which not only reduces the length of the submersible pump and simplifies the structure of the pump, but also reduces the weight of the entire submersible pump, saving materials and energy consumption, and at the same time reducing Submersible pump requirements for water level

[0004] However, the double-suction submersible pump has high balance requirements in some underwater environments, and the rotation of the impeller still cannot meet the balance requirements well, which is not conducive to the normal operation of the submersible pump.

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