The present application discloses a manual-automatic integrated self-adaptive pump with an infrared water level detection function, which comprises a pump housing, a water pumping assembly, a base, a vacuum cofferdam, a water outlet pipeline, a volute, an exhaust port, a sensor adjusting mechanism and an infrared liquid level sensing assembly. In this way, the manual-automatic integrated self-adaptive pump with the infrared water level detection function provided by the present application has a compact structure, can be easily installed, has strong adaptability, can realize manual and automatic free switching, can realize more accurate detection of remaining water level, has a longer service life, and can solve the problem of sensing the water level in the field.

Systems and methods for manufacturing stators for electric submersible pumps, where a stator core having an inner portion and an outer portion is formed. The inner portion has a plurality of teeth and outward-facing slots. Magnet wire coils are formed on the inner portion by holding the inner portion in a stationary position and using a linearly movable robotic arm to position the magnet wire in each slot while preventing the wire from sliding axially with respect to the stator and adjacent turns of the coil. After forming the magnet wire coils on the inner portion of the stator core, the outer portion of the stator core is press-fit onto the inner portion to close the slots. The magnet wire can thereby be positioned to maximize the fill factor of each slot and increase power density for a given temperature rise.

Systems and methods for manufacturing stators for electric submersible pumps, where a stator core having an inner portion and an outer portion is formed. The inner portion has a plurality of teeth and outward-facing slots. Magnet wire coils are formed on the inner portion by holding the inner portion in a stationary position and using a linearly movable robotic arm to position the magnet wire in each slot while preventing the wire from sliding axially with respect to the stator and adjacent turns of the coil. After forming the magnet wire coils on the inner portion of the stator core, the outer portion of the stator core is press-fit onto the inner portion to close the slots. The magnet wire can thereby be positioned to maximize the fill factor of each slot and increase power density for a given temperature rise.

An assembly structure of a multi-stage impeller and wheel housing for use in a submersible pump that includes a connecting seat having a drainage channel, shaft, intermediate unit which has a wheel housing, inner guide cover, and impeller. The wheel housing has a spacer, with an upper ring housing and lower ring canopy extending upward and downward, respectively, along the perimeter of the spacer. The intermediate unit has the upper ring housing connected to the canopy of the connecting seat by a swivel snap structure. A bottom unit has a bottom impeller and bottom wheel housing, which has a water suction port, a bottom plate and a bottom ring housing that extends upward along the perimeter of the bottom plate. A bottom ring canopy of an intermediate unit is connected by a rotating snap structure, and the bottom ring housing is pressed by a sealing ring.

An assembly structure of a multi-stage impeller and wheel housing for use in a submersible pump that includes a connecting seat having a drainage channel, shaft, intermediate unit which has a wheel housing, inner guide cover, and impeller. The wheel housing has a spacer, with an upper ring housing and lower ring canopy extending upward and downward, respectively, along the perimeter of the spacer. The intermediate unit has the upper ring housing connected to the canopy of the connecting seat by a swivel snap structure. A bottom unit has a bottom impeller and bottom wheel housing, which has a water suction port, a bottom plate and a bottom ring housing that extends upward along the perimeter of the bottom plate. A bottom ring canopy of an intermediate unit is connected by a rotating snap structure, and the bottom ring housing is pressed by a sealing ring.

A sealing assembly for a downhole device has first (12) and second sealing (22) components which are urged together to make up the assembly such that a first sealing surface (34) on the first component radially presses a lip member (44) on the second component to change the angle of a second sealing surface (45) in the connected assembly. The components are urged together by a driving member (60) which can have screw threads that cooperate with the first component. The lip may be annular and may be formed by an undercut or recess (42) radially inwardly or outwardly of the lip member, allowing the lip member to bend radially inwards into the recess, during insertion of the second sealing component into the first.

A sealing member according to the present invention includes a head plate having a through hole and attached to an opening end of a pump column, a lift shaft penetrating the through hole and raised and lowered between a raised position and a lowered position in raising and lowering the pump, and a bellows member extending and contracting corresponding to the raising and lowering of the lift shaft. The bellows member includes a bellows tube covering an outer peripheral surface of a protruding portion of the lift shaft protruding downward from the head plate, a first attaching member disposed contiguously to a lower end of the bellows tube and attached to a protruding lower portion, and a second attaching member disposed contiguously to an upper end of the bellows tube and attached to a lower surface of the head plate.

A sealing member according to the present invention includes a head plate having a through hole and attached to an opening end of a pump column, a lift shaft penetrating the through hole and raised and lowered between a raised position and a lowered position in raising and lowering the pump, and a bellows member extending and contracting corresponding to the raising and lowering of the lift shaft. The bellows member includes a bellows tube covering an outer peripheral surface of a protruding portion of the lift shaft protruding downward from the head plate, a first attaching member disposed contiguously to a lower end of the bellows tube and attached to a protruding lower portion, and a second attaching member disposed contiguously to an upper end of the bellows tube and attached to a lower surface of the head plate.

A sealing member according to the present invention includes a head plate having a through hole and attached to an opening end of a pump column, a lift shaft penetrating the through hole and raised and lowered between a raised position and a lowered position in raising and lowering the pump, and a bellows member extending and contracting corresponding to the raising and lowering of the lift shaft. The bellows member includes a bellows tube covering an outer peripheral surface of a protruding portion of the lift shaft protruding upward from the head plate, a first attaching member disposed contiguously to an upper end of the bellows tube and attached to an upper end surface of the lift shaft, and a second attaching member disposed contiguously to a lower end of the bellows tube and attached to an upper surface of the head plate.

A first fluid rotor that has a first fluid intake end and a first fluid discharge end. A second fluid rotor that has a second fluid intake end and a second fluid discharge end. The second fluid rotor is rotatably coupled to the first fluid rotor to rotate in unison with the first fluid rotor along a shared rotational axis. The first fluid intake end and the second fluid intake end are facing opposite directions. A first fluid stator surrounds the first fluid rotor. The first fluid rotor and the first fluid stator form a first fluid stage. The second fluid stator is aligned along the rotational axis. The second fluid stator and the second fluid rotor form a second fluid stage. A flow crossover sub is positioned between the first fluid stage and the second fluid stage.