One or more techniques and/or systems are disclosed for mitigating fluid loss or leakage from a fluid pump with a rotating shaft driving a pumping mechanism. A seal gland component can have two or more internal seals formed by two or more seal components, such as O-rings, that create one or more chambers that act as a lubricant/barrier fluid reservoir to provide for reduced friction and mitigate release of gaseous emissions. Further, the seal gland component can be a retrofit on an existing shaft to provide for greater life and efficiency as compared to the existing packing gland or other sealing components. Further, the one or more internal seals can be arranged within the seal gland in an asymmetrical manner such that the seal gland can be removed from a shaft, rotated, and reinstalled with the internal seals contacting a different position on the surface of the shaft.

Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.

A delivery device for delivering a liquid may include a housing, a bearing, a shaft seal, a hollow space, and a collection space. A shaft may be arranged in the housing. The shaft may be non-rotatably connected to a delivery mechanism arranged outside the housing. The bearing may be arranged in the housing and may rotatably mount the shaft. The shaft seal may be arranged axially between the bearing and the delivery mechanism and may seal the housing. The shaft seal may be arranged radially outside the shaft. The hollow space may be formed axially between the bearing and the shaft seal. The collection space may be arranged radially on a side of the hollow space facing away from the shaft. The collection space may be fluidically connected to the hollow space via a drain opening. The hollow space may expand radially, axially between the bearing and the shaft seal.

A seal structure of a drive device is provided which includes a case in which a motor chamber for accommodating an electric motor and a gear chamber for accommodating a gear mechanism are located adjacent to each other, a partition that separates the motor chamber and the gear chamber, a bearing that supports a rotating shaft, a seal part that seals between the rotating shaft and the partition, a lubricating oil that lubricates the gear mechanism, and a coolant that cools the electric motor, and also includes a first bearing on the motor chamber side, a second bearing on the gear chamber side, a first seal part on the motor chamber side, a second seal part on the gear chamber side, and at least the second seal part of the first seal part and the second seal part is provided between the first bearing and the second bearing.

An oil bearing structure of a fan includes a shaft seat, a rotating shaft, and an oil bearing. The shaft seat includes a boss. A middle portion of the boss defines a slot. One end of the rotating shaft is inserted into the slot. Another end of the rotating shaft is a free end. The oil bearing is sleeved on an outer periphery of the rotating shaft. An axis of the rotating shaft and an axis of the oil bearing are perpendicular to the shaft seat. An effective length of the oil bearing and the rotating shaft is 50%-70% of a length of the fan.

An electrical submersible well pump assembly has shaft couplings. One of the couplings has a lower hub that rotates in unison with the motor shaft and an upper hub that rotates in unison with the pump shaft. A helical spring clutch engages both hubs when the motor shaft is being driven by the motor. Ceasing driving rotation of the motor shaft causes the spring clutch to disengage from the upper hub, enabling the pump shaft to rotate the upper hub without rotating the lower hub.

An electrical coolant pump, preferably for use as an additional water pump in a vehicle, is characterised in that a radial bearing of the shaft, which is arranged between the pump impeller and the rotor, is provided by means of a radial sintered sliding bearing having a defined porosity lubricated by coolant, and a shaft seal is arranged between the radial sliding bearing and the motor chamber, wherein at least one coolant flow channel with a predetermined depth is provided in the sintered sliding bearing in an axial direction extending from the end of the sintered sliding bearing on the side of the pump chamber.

One or more techniques and/or systems are disclosed for a dual tandem seal configuration that can provide a seal around a drive shaft in a pumping apparatus. The pumping apparatus can include an outboard seal radially surrounding an adapter shaft. The outboard seal can be retained in place by a front bracket at a front end of the outboard seal and a retention lip of the adapter shaft at a rear end of the outboard seal. The pumping apparatus can further include an inboard seal radially surrounding the adapter shaft and located between the outboard seal and the pump. The inboard seal can be retained in place by a rear bracket at a front end of the inboard seal.

First and second pressure relief passages extend from an oil pan in a branching manner, and merge with each other to form a merging portion. A pressure relief hole is arranged above the merging portion, and a first pressure relief passage is arranged below the merging portion. The minimum cross-sectional area of the second pressure relief passage is smaller than the minimum cross-sectional area of the first pressure relief passage. The second pressure relief passage includes a bent portion formed by bending the second pressure relief passage. The bent portion is configured to perform gas/liquid separation by crushing bubbles. When reaching the merging portion from the bent portion, oil is returned to the oil pan via the first pressure relief passage. When reaching the merging portion from the bent portion, gas is discharged to the outside of the housing via the pressure relief hole.

A fluid diverter that utilizes a gland seal. The gland seal includes a stationary seat, a first O-ring, a rotating seal face, a second O-ring, a plurality of tabs, and a spring retainer. The fluid diverter may also include a one-piece bearing isolator. The one-piece bearing isolator includes a stator having a first end, a first set of O-rings, a second set of O-rings, and a second end. The one-piece bearing isolator also includes a rotor seated in the stator, the rotor including a recess, an O-ring positioned in the recess, and a lip extending over and hugging the stator. The fluid leak diverter utilizes the gland seal and one-piece bearing isolator to direct leaked liquid fluid away from a pump (and functional components of the pump such as bearings).