Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/20—Measuring; Control or regulation
  • B01F35/22—Control or regulation
  • B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
  • B01F23/40—Mixing liquids with liquids; Emulsifying
  • B01F23/41—Emulsifying
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
  • B01F25/40—Static mixers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
  • B01F25/40—Static mixers
  • B01F25/46—Homogenising or emulsifying nozzles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/20—Measuring; Control or regulation
  • B01F35/21—Measuring
  • B01F35/211—Measuring of the operational parameters
  • B01F35/2113—Pressure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/71—Feed mechanisms
  • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
  • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
  • B01F35/80—Forming a predetermined ratio of the substances to be mixed
  • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
  • B01F35/831—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows
  • B01F35/8311—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows with means for controlling the motor driving the pumps or the other dispensing mechanisms
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
  • F04B11/005—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons
  • F04B11/0058—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using two or more pumping pistons with piston speed control
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
  • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
  • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
  • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
  • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
  • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application

Definitions

• a reduction gear unit consisting of a pulley system and, where present, a parallel axis or epicyclic reduction gear system.
• US 6827479 discloses a nozzle valve with a fixed geometry and a system for controlling forward travel speeds of the oil hydraulic pistons, wherein the control of the piston travel speeds directly regulates the pressure (without having freedom of action over the latter).
• the homogenization pressure is automatically fixed and the system substantially has only one degree of freedom.
• - figure 2 illustrates a block scheme of the operating cycle of the actions of pumping a fluid to be homogenized
• - figure 3 illustrates a feedback control scheme of the homogenizer.
• 1 indicates overall a high-pressure homogenizer.
• a homogenizing valve Positioned in the manifold 6 there is a homogenizing valve (not described or illustrated, as it is of a known type), which receives the liquid to be homogenized.
• the liquid entering the valve has a pressure value and flow rate determined by the action of the aforementioned pumping pistons 2a, 2b.
• phase offsets by creating an appropriate law of motion for each piston and combining it according to a phase offset set in an operating software program of the electronic system 5, one can thus generate a combination of flow rates in the manifold 6 such as to assure a constant sum of the flow rates themselves (resultant 7) and hence an equally constant pressure. Moreover, it is possible to modify the phase offsets when there is a variation in the viscosity of the liquid product to be homogenized and the inlet pressure of the cylinders 2a, 2b.
• step-up/step-down transients of the two pistons number only 5-6 per minute, and in any case less than 15 per minute (as a consequence of the reduced piston speeds), very far from the approximately 160 pulsations/minute of a prior art crankshaft, which rotates precisely at about 160 rpm, and they are in any case dampened by the presence, in the virtual cams, of the rising and falling speed ramps of the pistons themselves.
• This is important because a constant flow rate and pressure is an ideal situation, but in reality the transients in the piston exchange phases imply the presence of refluxes through the pumping valves; this can cause small deviations from the rated pressure which vary according to the maximum pressure applied and are preferably in the range of 0 to 100 bar.
• the rated pressure instead remains absolutely constant during the central phases of piston travel.
• the software program used is based on the control and automation of moving axes in combination with two specific control cards (axis control cards).

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Dispersion Chemistry (AREA)
• Control Of Positive-Displacement Pumps (AREA)
• Reciprocating Pumps (AREA)
• Details Of Reciprocating Pumps (AREA)
• Accessories For Mixers (AREA)
• Colloid Chemistry (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Disintegrating Or Milling (AREA)

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Publications (1)

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Citations (5)

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• 2012
  • 2012-12-21 IT IT000089A patent/ITPR20120089A1/it unknown
• 2013
  • 2013-12-12 EP EP13824383.7A patent/EP2935885B1/en active Active
  • 2013-12-12 RU RU2015129016A patent/RU2621773C2/ru active
  • 2013-12-12 JP JP2015548814A patent/JP6236091B2/ja active Active
  • 2013-12-12 KR KR1020157019750A patent/KR102042163B1/ko active Active
  • 2013-12-12 CN CN201380066899.0A patent/CN104884798B/zh active Active
  • 2013-12-12 US US14/651,449 patent/US9901889B2/en active Active
  • 2013-12-12 CA CA2894474A patent/CA2894474C/en active Active
  • 2013-12-12 ES ES13824383.7T patent/ES2615931T3/es active Active
  • 2013-12-12 BR BR112015014952-9A patent/BR112015014952B1/pt active IP Right Grant
  • 2013-12-12 DK DK13824383.7T patent/DK2935885T3/en active
  • 2013-12-12 WO PCT/IB2013/060873 patent/WO2014097075A1/en not_active Ceased

Patent Citations (5)

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