摘要:
The present invention concerns a centrifugal separator comprising a rotor, which forms an inlet (12) for a liquid mixture, a separation chamber (5), connected to the inlet (12), for separation of components in a liquid formed mixture and a discharge chamber (10). The discharge chamber is delimited by two axially separated end walls (12, 13) and a circumferential wall (14) extending between these and has an inlet (11, 11a) connected to the separation chamber (5), an outlet in a discharge device (17) arranged in the discharge chamber (10), and means, which together with parts of the inner surfaces of the discharge chamber (10) are arranged, during operation of the rotor, to entrain into rotation a component present in the discharge chamber (10) so that this forms a rotating liquid body. This liquid body has a radially inwards directed, essentially cylindrical, free liquid surface radially inside the circumferential wall (14). The discharge device (17) extends during operation from a central liquid free, part of the discharge chamber (10) to a level radially outside the free liquid surface. In order to gently into rotation entrain the component present in the discharge chamber (10) and make a discharge possible out of it with a small degree of air admixing the centrifugal separator according to the invention is provided with entraining means comprising at least one annular disc (19, 19a, 19b, 19c) extending around the rotational axis of the rotor which is fixedly connected to the rotor and has at least one part extending radially outside the level of the free liquid surface but radially inside the level of the outermost part of the discharge device (17).
摘要:
A centrifugal separator of the type including a rotor, which is supported by a driving shaft and which forms a separation chamber and an inlet chamber. The inlet chamber being delimited by a dividing wall. An inlet tube extends axially through the dividing wall at one axial end of the inlet chamber at which the inlet channel in the tube opens. In the inlet chamber there is arranged a number of separating discs. A central part of the inlet chamber is connected to an outside space through an evacuating channel. In order to efficiently and gently separate a supplied liquid mixture without demanding a large space in the centrifugal separator, the inlet device is provided with a baffle which, between the opening of the inlet channel and the discs, extends from the rotational axis of the rotor and delimits a liquid filled inlet space. The liquid in the inlet space flowing during operation from the inlet channel radially outwards into the liquid body.
摘要:
In order to free a liquid form a substance dispersed therein and having a larger density than the liquid a centrifuge rotor is used having a stack of conical separation discs. Elongated spacing members (11a, 11b) in the spaces between the separation discs are formed such that the liquid flow in the disc interspaces is conducted in a certain way. Thus, the main part of the liquid is conducted in flow paths (12a, 12b), each of which has a direction with one radial component and one component turned against the rotational direction of the rotor.
摘要:
Centrifugal separator comprising a rotor which inside itself forms an inlet chamber (16), a separation chamber (5) and an outlet chamber (12). The outlet chamber (12) is connected to the separation chamber (5) via a passage (13) through which a liquid separated during operation flows into the outlet chamber (12) and in the same forms a rotating liquid body with a radially inwardly directed free liquid surface (14). The outlet chamber is provided with an outlet (19), which is located radially outside the free liquid surface (14). In the outlet chamber (12) at least two wall elements (22) are arranged fixedly connected to the rotor and arranged to form a channel between themselves in order to during operation entrain the separated liquid into the rotation of the rotor and at the same time admit flow of the same radially outwardly in the outlet chamber (12). To make an effective entrainment possible without a great risk of air admixture the wall elements (22) have a portion, which extends radially between the radial level at which the free liquid surface (14) is located and a level radially outside the outlet (19), and which has a directional component in the circumferential direction, which seen radially outwardly is directed forwardly in the rotational direction.
摘要:
A centrifugal separator has a rotor, which forms an inlet chamber, a separation chamber (5) and an outlet chamber (10), in which a liquid, separated during operation, forms a rotating liquid body with a radially inwardly directed free liquid surface. A stationary discharge device (17) is provided together with rods 20 which are arranged to entrain, during the operation of the rotor, the liquid present in the outlet chamber (10) and to admit flow of such liquid radially outwardly to an inlet (19) in the discharge device (17). The rods are distributed around the rotational axis and rotate with the rotor and form flow spaces which extend axially, radially and in the circumferential direction. They entrain the liquid in the outlet chamber (10) efficiently and to admit flow of the liquid radially outwardly to the inlet (19) with reduced risk of air admixture. A wing extending radially and axially in the outlet chamber may also be provided.
摘要:
A method and a device for separation of a fluid in the liquid state comprising two liquids that are not mutually miscible, with different densities, wherein a first liquid is to be cleansed from a second liquid, whereby the fluid in the liquid state is conducted through a rotor where centrifugal separation of the second liquid from the first liquid takes place, and is then conducted into a tank, with the proportion of the second liquid being reduced to less than 5%, and by conducting the fluid, after centrifugal separation, through a restriction, whereby the pressure of the fluid in the liquid state is reduced, which causes portions of the fluid in the liquid state to evaporate so that further portions of the second liquid escape in the form of a gas which is conducted away, thereby further reducing the proportion of the second liquid in the outgoing fluid in the liquid state.
摘要:
This document describes a device for cleaning of crankcase gases from a combustion engine, and a combustion engine having such a device. An inlet conduit is connected to a crankcase of the combustion engine. A centrifugal separator receives a flow of crankcase gases from the crankcase via the inlet conduit and comprises a routable centrifuge rotor for centrifuging the crankcase gases. A drive device drives the centrifuge rotor. An outlet conduit discharges cleaned crankcase gases from the centrifugal separator. The rotary speed of the drive device, and thus the rotary speed of the centrifuge rotor, is controllable depending on the gas pressure in the crankcase. An export conduit may be connected to the inlet conduit and adapted to enable discharge of a flow of crankcase gases from the crankcase by-passing the centrifugal separator depending on the gas pressure in the crankcase. An import conduit may be connected to the inlet conduit and adapted to enable feeding of a flow of air from the surroundings to the crankcase depending on the gas pressure in the crankcase.
摘要:
The invention refers to a centrifugal separator for cleaning of a gas containing liquid impurities. The centrifugal separator comprises a stationary casing, which encloses a separation space and has an inner wall surface. A rotating member is provided in the separation space and arranged to rotate in a direction of rotation around an axis (x) of rotation. The rotating member brings the gas to rotation for separation of the liquid impurities from the gas. A gas outlet is provided for discharge of the cleaned gas. A first liquid outlet is provided downstream the rotating member for discharge of separated liquid impurities. The separation space comprises an annular surface which extends between the rotating member and the inner wall surface. The annular surface is configured to transport liquid impurities radially outwardly to the first liquid outlet.
摘要:
In a centrifugal separator for cleaning a gas containing liquid impurities, a stationary casing encloses a separation space having an inner wall surface. An inlet is provided. A rotating member is provided in the separation space downstream the inlet rotates in a direction of rotation around an axis of rotation. The rotating member brings the gas to rotation in the direction of rotation for separation of liquid impurities from the gas. A gas outlet is provided downstream the rotating member for discharge of the cleaned gas. A first liquid outlet is provided upstream the gas outlet and downstream the rotating member for discharge of separated liquid impurities and comprises an outlet hole. A surrounding ring groove extends outwardly from the inner wall surface in the stationary casing and has a surrounding bottom surface, wherein the outlet hole extends outwardly from the bottom surface.
摘要:
In a centrifugal separator and method for cleaning of gas containing solid and liquid impurities. A stationary casing encloses a separation space through which gas flows. An inlet channel extends to the separation space and forms an inlet for the gas to be cleaned. A rotating member is provided in the separation space downstream the inlet and rotates about an axis of rotation. The rotating member comprises a number of separation discs and brings the gas to rotate for separating by means of centrifugal forces a main part of the impurities from the gas. A gas outlet channel is provided downstream the rotating member for discharging the cleaned gas. A first outlet is provided for discharging the impurities. A supply member is configured to permit the supply of a separation aid humidifying the particles, which aid is in the form of an aerosol, to the gas to be cleaned.