A rotary machine for acting on a process fluid includes an impeller, a shaft, a drive, a seal and a flush casing. The impeller acts on the process fluid and is mounted on the shaft. The drive is connected to the shaft and rotates the shaft and the impeller about an axial direction. The seal has a sealing element sealing the shaft during rotation of the shaft. The flush casing receives a flushing fluid for flushing the sealing element, and delimits an annular flush chamber extending about the sealing element. The flush casing includes a bushing surrounding the sealing element and delimits a radial leakage gap arranged between the sealing element and the bushing. The bushing delimits an axial leakage gap between the impeller and the bushing, and the width of the axial leakage gap in the axial direction is adjustable.

A lid (2) for closing a container (4) of liquid, the lid being provided with a spindle passageway (20) enabling an elongate body (30) of a stirrer member (3) for stirring the liquid to pass through the lid (2), which elongate body is designed to be mounted to rotate in the spindle passageway (20), the spindle passageway including a portion (23) for receiving the elongate body (30) and designed to allow the elongate body (30) of the stirrer member (3) to pass through it, and a portion (21) for receiving a seal (1), which portion has an inside diameter greater than the inside diameter of the portion (23) for receiving the elongate body (30) and receives an annular seal (1) designed to allow the elongate body of the stirrer member to pass through it. The inside peripheral face of the annular seal (1) is provided with a helical lip (120).

A mixing apparatus (1) for mixing a fluid and/or solid. The mixing apparatus includes a mixing container (100) having an interior in which the fluid and/or solid can be arranged. A feed-through passage (10) extends through a container wall (101) of the mixing container. A drive shaft (50) is fed through the feed-through passage, to drive a stirring element (30) arranged at least partly in the interior of the mixing container. The stirring element is used to mix the fluid and/or solid arranged in the mixing container. A drive-side shaft end (51) of the drive shaft couples the drive shaft to a drive (120) arranged outside of the mixing container. An adjustable seal (70) seals off the feed-through passage. A setting apparatus (80) is provided to switch the adjustable seal into at least two sealing operation states having different sealing effects.

A mixing device includes a mixing container for receiving mixing material and a mixer cover, wherein a first seal and a second seal is provided between the mixing container and the mixer cover. The first seal and the second seal are so arranged that a first air space is formed between the first seal and the second seal.

A mixing device for mixing a liquid plastics component with a gas, includes a liquid feed, a gas feed, and a discharge opening for discharging the mixture generated in the mixing device. Each of the liquid feed, gas feed, and discharge opening is connected to a mixing chamber in which a rotatable agitator device is arranged. A shaft for driving the agitator device projects out of the mixing chamber, and the mixing chamber is sealed off, in the region of the shaft, by a seal. On that side of the seal which is averted from the mixing chamber, there is a reservoir which is connected to the liquid feed and which is connected by a passage to the mixing chamber.

A rotary machine for acting on a process fluid includes an impeller, a shaft, a drive, a seal and a flush casing. The impeller acts on the process fluid and is mounted on the shaft. The drive is connected to the shaft and rotates the shaft and the impeller about an axial direction. The seal has a sealing element sealing the shaft during rotation of the shaft. The flush casing receives a flushing fluid for flushing the sealing element, and delimits an annular flush chamber extending about the sealing element. The flush casing includes a bushing surrounding the sealing element and delimits a radial leakage gap arranged between the sealing element and the bushing. The bushing delimits an axial leakage gap between the impeller and the bushing, and the width of the axial leakage gap in the axial direction is adjustable.

A mixing apparatus (1) for mixing a fluid and/or solid. The mixing apparatus includes a mixing container (100), in the interior of which the fluid and/or solid can be arranged, and a feed-through (10) through a container wall (101) of the mixing container (100). A drive shaft (50), fed through the feed-through (10), is used to drive a stirring element (30), which is arranged at least partly in the interior of the mixing container (100), in order to mix the fluid and/or solid, arranged in the mixing container (100). A drive-side shaft end (51) of the drive shaft (50) is used to couple a drive (120), arranged outside of the mixing container (100), to the drive shaft (50). An adjustable seal (70) seals off the feed-through (10), wherein the adjustable seal (70) can be put into at least two sealing operation states having different sealing effects.

Disclosed is a dispersing device, including a first shear device and at least two second shear devices, one of the first shear device and the second shear device is a shear stator and the other is a shear rotor. The first shear device includes a shear inner ring, a shear outer ring and an annular isolation board. The shear inner ring is provided with a plurality of first radial through holes; the shear outer ring is provided to surround outside the shear inner ring, and is provided coaxially with the shear inner ring and connected in linkage with each other; and the shear outer ring is provided with a plurality of third radial through holes. The annular isolation board is located between the shear inner ring and the shear outer ring, and both opposite ends of the annular isolation board form shear receiving grooves, respectively.

A mixing device for mixing a liquid plastics component with a gas, having at least one liquid feed, at least one gas feed and a discharge opening for the mixture generated in the mixing device, each of which is connected to a mixing chamber in which a rotatable agitator device is arranged, wherein a shaft for driving the agitator device projects out of the mixing chamber, and the mixing chamber is sealed off, in the region of the shaft, by at least one seal, wherein, on that side of the at least one seal which is averted from the mixing chamber, there is arranged a reservoir which is connected to the at least one liquid feed and which is connected by way of a line to the mixing chamber.

A cartridge for dispensing a fluid is provided, the cartridge comprising: a reservoir chamber configured for receiving the fluid, the reservoir chamber having a fluid outlet and a cover with a first bearing; and a stirring assembly comprising a stirrer located inside the reservoir chamber, the stirring assembly comprising a shaft connected to the stirrer. The stirring assembly can be moved between first and second positions, wherein in the first position the stirring assembly can seal the fluid outlet, the stirring assembly in the first position being configured to form a second bearing with the reservoir chamber or the fluid outlet such that the stirrer can be rotated about an axis defined by the first and second bearing, and wherein if the stirring assembly is in the second position the fluid can pass through the fluid outlet, the shaft being configured to transmit rotational power to the stirrer.