Classifications

• • 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
  • F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
  • F04B13/02—Pumps specially modified to deliver fixed or variable measured quantities of two or more fluids at the same time

Definitions

• the invention relates to a mixing memeri by means of which it is possible to mix certain additives, such as soap solutions, emulsifiable oils etc. for instance to water.
• the emulsion is mixed in a storage tank, from where it is transmitted, in pressurized state, to the place of use.
• problems arise by the impurity of water, lime in the first place, which makes sliding sur ⁇ faces, filters and pipe lines dirty, because in the storage tank lime residue settles from the emulsion and is drifted forward leading to said disadvantages.
• the emulsion is most apt to get and also to produce bacteria and yeast fungi in the storage tank, whereby the function of apparatus is disturbed.
• the most important advantage of the invention can be considered the fact that it is possible to get totally rid of the storing of the mixed emulsion and neither do the impurities of water cause problems when on the water-transmitting side a membrane batcher is utilized.
• a double-acting piston pump on the oil side an accurate concentration for the emulsion is produced and by means of stepless adjustment of the stroke an accurate percentage regulation of the emulsion concentration is achieved. Since the mixing pump is strong and simple, service and maintenance costs are saved and reliability guaranteed.
• valves 2.1 and 2.2 The inlet of pressurized water to the membrane pump is adjusted by valves 2.1 and 2.2.
• the valves 2.1 and 1.2 are opened.
• the water then flowes over valve 2.1 to the chamber, formed by the one half 4 of the pump, and presses piston 7 and membrane 8 against the other pump half 9, whereby the water flows over valve 1.2 from the chamber, formed by the pump half 9, to line (E).
• the membrane pump pumps, simultaneously, the oil by means of piston 15 from chamber 6 over directional valve 13 to line 16 and further into the water flowing in line (E).
• New oil is then sucked by the piston pump chamber 14 through directional valve 13 from line (o) .
• the valves 2.1 and 1.2 are closed electrically and valves 1.1 and 2.2. opened at the same time.
• the water flowing over the pressurized water line V 2 presses the membrane pump piston 7 to the left and the water from the chamber, which is formed of the one pump half 4, to line (E) .
• the piston pump presses now oil from chamber 14 to line 16 and into the water in line (E) .
• This motion of the membrane pump is restricted by the left-side motion guard 10, which gives an im- puls to change the functions of the valves in the water lines.
• the pumping energy of the mixing pump is taken from the energy of the water pressure.
• the adjusting valves can be electrically controlled but mechnical control is also possible. Regulation of the oil volume in relation to the flow of water is made by shifting the location of thefixing point of attach ⁇ ment of the piston pump piston rod 12 in arm 5. The attachment by means of part 18 can be done within distance (S) on arm 5. By means of this regulation the stroke of the piston pump is changed.
• the introduced piston pump can be replaced also by a membrane pump and the introduced membrane pump by a piston pump.
• the linearity of the mixture can be improved by many means.
• the cross-section ratio of the piston rod and piston/membrane in both pumps can be brought closer in relation to each other and an improvment can also be achieved by changing the mutual function of the pumps so that in both ones the piston rod moves inward at the same time and outward at the same time.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Reciprocating Pumps (AREA)

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8531271

Family Applications (1)

Country Status (4)

Cited By (2)

Citations (3)

• 1990
  • 1990-10-19 FI FI905159A patent/FI90408C/fi not_active IP Right Cessation
• 1991
  • 1991-11-18 EP EP91919126A patent/EP0670010B1/en not_active Expired - Lifetime
  • 1991-11-18 DE DE69126220T patent/DE69126220T2/de not_active Expired - Fee Related
  • 1991-11-18 WO PCT/FI1991/000341 patent/WO1993010352A1/en not_active Ceased

Patent Citations (3)

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