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Alfa-Laval AB Patents
Assignee:
Alfa-Laval AB
Address:
Tumba, SE
No. of patents:
205
Patents:


1 2 3 4 5


Patent Number Title Of Patent Date Issued
4271860 Valve June 9, 1981
A valve has a pressure chamber within its housing for remote operation. A stem in the housing has axial passages for power fluid and for cleaning liquid. The valve member is a sleeve, biased closed, which engages a movable seat which is resiliently supported. Leakage around the seals
4247245 Method for storing and transporting mixed cargo January 27, 1981
An apparatus for storing mixed cargo in which a plurality of containers each house therein a plurality of storage channels arranged in tiers and rows filling each container and located immovably with respect to each other. The storage channels lead away from a loading and unloading openi
4237781 Method and apparatus for forming blocks of natural cheese from cheese curd December 9, 1980
Crumbled cheese curd is fed into the top of a hollow perforated column in a chamber maintained at a sub-atmospheric pressure so as to form in the column a pillar of curd devoid of air pockets, the curd in the lower portion of the pillar being compressed by the weight of superimposed curd
4231323 Milking machine claw November 4, 1980
An outlet from the claw housing is controlled by a valve which allows a small discharge flow even in its closed position. The valve is operated by a pneumatic member comprising two flexible diaphragms defining between them a working chamber, the diaphragms having unequal areas and being
4217647 Process control valve apparatus August 12, 1980
A housing (11) which is intended for mounting on a process control valve (5) contains electric circuits (3) and means (4) controlled by these circuits for converting electric control signals into operating signals which operate the valve via a cylinder. The electric control signals are
4216239 Process for recovering meal and fat from animal raw materials August 5, 1980
Immediately after the animal raw material is boiled, the main part of its fat content is removed by centrifugal separation. The residue, consisting essentially of sludge and stick-water, is then subjected to a mixing operation, and sludge is removed from the mixture by a second centrifug
4214553 Pneumatic time delay device July 29, 1980
Apparatus for controlling the operation of a pneumatically actuated device such as a milking machine has two chambers one of which has an adjustable throttle valve in a connection to a vacuum line. The other chamber has a connection to the atmosphere and another connection to the vacuum
4214552 Valve coupling for vacuum line July 29, 1980
A mobile milking unit has a pipe rigidly secured to a first connection means coacting with a second connection means at the inlet of a valve through which the unit can be releasably connected to a vacuum line, a valve body in the valve housing normally closing the passage between the
4208031 Control valve June 17, 1980
A flexible membrane wall divides a control valve housing into two chambers, one for a control fluid and one for a fluid to be processed, the latter chamber containing a valve seat coacting with a valve body secured to the central part of the membrane wall. This wall comprises two membran
4206871 Leakage indicator for centrifuge June 10, 1980
In a centrifuge having a rotor from which solid material is discharged intermittently through a peripheral discharge opening, leakage through the opening is detected by a device comprising vibration-sensing means positioned radially outside the opening so that liquid leaking therethr
4196696 Shock absorber for teat cup liner April 8, 1980
A teat cup liner is formed at the tube end with a series of external elongated projections of elastic material extending lengthwise of the liner and distributed evenly around the circumference of the tube end to provide it with a shock absorber.
4193537 Centrifugal separator with presedimentation means March 18, 1980
The centrifugal rotor contains a distributor forming a conical wall having openings through which the central inlet chamber is connected to the separating space, the inlet chamber also being connected through a presedimentation space to a peripheral sludge space by way of an annular
4191325 Centrifuge with sludge outlets at rotor periphery March 4, 1980
A centrifuge rotor has a first part axially displaceable into and from abutment against a second part of the rotor during operation of the centrifuge, the rotor also having peripheral outlet openings for separated sludge which are formed by and between said rotor parts. One of the rotor
4189377 Multiple cyclone separator February 19, 1980
Each group of conical cyclone separators is arranged in an annular block with their longitudinal axes in a common plane, each side of each block having concentric sealing surfaces coacting with corresponding sealing surfaces of an adjacent similar block to seal against leakage from an
4181535 Starch production January 1, 1980
The water phase from a corn steeping step is evaporated in a multistage evaporator to a steeping concentrate, the steeped corn being divided into an aqueous germ fraction, an aqueous fiber fraction and a gluten suspension which is partly dewatered to an aqueous gluten fraction. Said
4177044 Process for removing oxygen from and adding carbon dioxide to a liquid water December 4, 1979
A liquid and a carbon dioxide containing gas are brought into intimate contact with each other while flowing countercurrently through a column divided into three contact zones. The liquid flows through the first contact zone at a relatively low temperature t.sub.1 to take up carbon d
4174721 Apparatus for cleaning milking systems November 20, 1979
Teat cups are connected through a milk transport conduit to a receptacle communicating with a vacuum source, and a storage tank having a drain outlet is adapted to receive milk from the receptacle by way of a pump. A unit for controlling a cleaning procedure is connectable to the recepta
4163009 Method of separating animal raw material July 31, 1979
To separate animal raw material into fat and protein fractions, the material in finely divided form is circulated through a circuit which includes a heating zone where the material is continuously heated to a relatively low temperature of about 45.degree.-70.degree. C., and a stream
4162978 Separator July 31, 1979
A stationary chamber having a perforated peripheral wall contains an axial rotor having rubber-like radial carrier blades which, as the rotor rotates, are indented at their outer edges by guide means having helical turns extending along said peripheral wall. A passage allows ambient gas
4140806 Filtering method for separating skim milk from milk products February 20, 1979
A liquid milk product, such as milk or cream, is caused to flow along the surface of a filter at one side thereof from an inlet of the filter to an outlet thereof at a velocity of 0.5 to 20.0 m/sec., the main quantity of the filter pores each having a diameter of 0.2 to 10 .mu.m. At the
4137335 Recovery of fat and meat meal from animal raw material January 30, 1979
Animal raw material is boiled at least mainly by indirect heating and then divided into stick water and solids, the solids being separately dried to form a first meat meal fraction. The stick water, preferably after separating a sludge component and a fat component therefrom, is conc
4136886 Arrangement for cleaning a sealing ring on a shaft January 30, 1979
A rotatable shaft extends from the interior of a receptacle through a wall thereof forming a closed chamber surrounding the shaft; and a first sealing ring surrounding the shaft is operable to prevent flow into the chamber from the receptacle interior but to allow flow in the opposite
4130053 Apparatus for cutting cheese curd December 19, 1978
A curd-cutting tool is rotatable about an axis within an immobile curdling container, driving means being provided for rotating this tool in one direction around said axis to cut the cheese curd; and means are operatively connected to the driving means for causing interruptions in th
4128125 Spiral heat exchanger December 5, 1978
A spiral heat exchanger comprises a generally cylindrical spiral body having two parallel, spirally-shaped flow passages for heat exchanging media. An end wall is releasably connected to the spiral body at each end thereof, the spiral body and at least one end wall being movable along a
4126103 Control apparatus for automatic removal of milking means November 21, 1978
A primary valve has an open position for effecting operation of a milking means remover upon completion of a milking operation. A secondary valve has a first position for causing a pneumatic actuator to maintain the primary valve closed in response to normal milk flow from the milking
4108058 Cheese-making apparatus August 22, 1978
An immobile container for the cheese curd is in the form of a body of revolution having a substantially horizontal axis; and a tool which is rotated by a drive shaft about the container axis is arranged to cut and stir curd situated above as well as below the container axis. The tool
4105547 Filtering process August 8, 1978
A filterable fluid flows under pressure through a filtering passage along one side of the filter, so that there is a substantial pressure drop along the filter area in the flow direction. A fluid flow in this same direction is provided in a filtrate passage extending generally parallel t
4103822 Centrifugal separator August 1, 1978
A centrifugal rotor contains a member slidable axially of the rotor to open and close its peripheral outlets, and on the side of this member opposite from the separating chamber is an operating chamber for receiving liquid to maintain the slidable member in its closing position. Said mem
4083836 Production of rapeseed protein concentrate for human consumption April 11, 1978
To prepare a satisfactory edible protein concentrate, seed selected from Brassica species and Crambe abyssinica are cracked to loosen the hulls and then separated into a meat fraction and a hull fraction. The hull-free meat fraction is then subjected to myrosinase inactivation in the wet
4081129 Centrifuge with peripheral outlets and stationary paring device March 28, 1978
In a centrifuge rotor having intermittently opening peripheral outlets for discharging separated solids and having a paring chamber with stationary paring means for discharging separated liquid, an arrangement is provided to prevent air from passing into the paring channel when opening o
4080995 Pulsator for milking machines March 28, 1978
A slide is adapted to be reciprocated along a slide plane to connect each pulsation opening of the milking machine pulsator alternately to vacuum and to atmosphere. A spindle rotated at constant speed by a suitable motor is provided with an endless, helically-shaped groove; and a driving
4079832 Manure remover March 21, 1978
A reciprocating drive unit is operable through a clutch assembly to move a manure scraper step-wise first in one direction and then in the opposite direction along a manure track. The clutch assembly includes means responsive to an overload on the scraper for causing the clutch assembly
4077564 Sludge centrifuge March 7, 1978
A centrifugal rotor has separate peripheral channels serving as outlets for separated sludge, and the separating chamber of the rotor contains means located between the sludge outlets to form funnel-shaped pockets each converging radially outward toward a corresponding sludge outlet. Sea
4046208 Apparatus for weighing a flowing material September 6, 1977
A drum rotatable about an axis through its center of gravity carries troughs located in a circle concentric to said axis and which are charged at a certain level with flowing material to be measured as to quantity, whereby the drum is influenced by a driving moment from the weight of the
4033295 Arrangement for reducing vacuum in milking machines July 5, 1977
A connection between a vacuum source and a conduit of a milking machine is controlled by a valve body having a position for providing a normal working vacuum in the conduit and a position for providing a reduced working vacuum in the conduit. The valve body is actuated by an element
4023588 Control device for milking machines May 17, 1977
The housing of a control device forms a chamber into which opens a milking machine conduit communicating alternately with a vacuum source and a pressure source, there being a separate connection between the chamber and the pressure source which is independent of the conduit. A valve memb
4015773 Centrifuge for separating solids from liquids April 5, 1977
A centrifugal rotor having peripheral outlets for intermittent sludge discharge includes two axially united and interconnected parts forming between them the separating chamber. One of the rotor parts is a bowl formed in one piece and provided with an edge portion directed radially i
4014498 Method and apparatus for centrifuging sludge-containing liquids March 29, 1977
When a predetermined amount of separated sludge has accumulated in the peripheral part of the centrifuge rotor, a sensing device automatically opens outlets for the discharge of sludge. To provide substantially constant time intervals between consecutive openings of these sludge outl
4014383 Method of heating heat exchanger unit March 29, 1977
In a heat exchanger unit having a heating section and a regenerative section, the product to be heat treated is first passed through the regenerative section to preheat the product, thence through the heating section and then back through the regenerative section to recover heat from
4011838 Electronic milker March 15, 1977
A milking machine system includes a flow rate sensing device, a timing device, and a system control means for varying the character of the working and massage vacuums during the milking process, in response to the rate of milk flow and to time. The milking machine system can be contr
4004553 Heat treating apparatus for liquids January 25, 1977
One of a plurality of members is rotated by driving means relative to another member around an axis, the members forming between them a narrow passage extending around the rotation axis and serving for through-flow of a liquid to be heat treated, the driving means effecting relative move
3999517 Milking installation December 28, 1976
A milking installation comprises an annular platform divided into separate milking stalls, each for one cow and provided with a milking unit hermetically connected to its milk receiver, and means for rotating the annular platform so that the stalls successively pass a milk collecting
3992492 Apparatus for contacting a gas and a liquid November 16, 1976
In an apparatus for contacting a gas with a liquid, the gas is caused to flow upward through a vertical channel associated with a device for charging the channel with a foam containing the liquid. The channel contains upper and lower gas-permeable elements each arranged to support a
3988112 Nozzle sterilizer providing outer and inner annular concentric cooling jets October 26, 1976
Annular concentric jets of steam and a liquid to be sterilized, respectively, are contacted with each other in a jet nozzle; and the resulting annular jet of steam-heated liquid is swept along both its inside and its outside by two additional annular jets of cold liquid concentric to
3986663 Centrifugal separator with sensing means October 19, 1976
A first unit rotating with the centrifugal rotor forms an electric resonance circuit having at least one variable oscillation property; and a sensing member rotating with the rotor is arranged to sense a displacement of an interface formed between two media undergoing centrifugal separat
3985103 Manure remover October 12, 1976
A manure remover for stables, especially for pigs, with a plurality of stalls arranged along a manure channel, which stalls have a manure area, situated close to the manure channel, a rotary brush being arranged to be driven and to sweep over the surface of the manure area and to move al
3983257 Production of milk with predetermined fat content September 28, 1976
Milk to be standardized is fed continuously to a centrifugal separator which discharges separate flows of skim milk and cream; and the density of the separated cream is maintained substantially constant by continuously measuring such density and using these density measurements to contro
3965867 Device for delivering feed portions to different places June 29, 1976
A conveyor strip is adapted to be unwound from a shaft to extend the strip along a row of feeding places, the strip being supported on an underlayer on which the strip slides as it is wound upon or unwound from the shaft. Feed portioning means operate to deliver feed portions of predeter
3960318 Centrifugal separator June 1, 1976
The solids separated from a liquid in a centrifugal rotor are discharged through outlets of the rotor into a stationary chute surrounding the rotor and into which a flushing liquid is supplied. The chute is provided with an overflow outlet which coacts with the supply means for the flush
3951311 Liquid measuring and mixing apparatus April 20, 1976
Inlet conduits supply different liquids under pressure to a measuring unit which delivers measured quantities of the respective liquids to a common outlet conduit for the desired liquid mixture. To counteract variations in the flow rate of the mixture in the outlet conduit due to operati
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