Provided are a method for supplying water of specified concentration, including: a step of adding at least two liquids, a conductive first liquid and a non-conductive second liquid, to ultrapure water to produce water of specified concentration containing a first liquid-component and a second liquid-component at specified concentrations, in which a mixed solution in which the first liquid and the second liquid are mixed at a specified mixing ratio in advance is prepared; and the mixed solution is added to the ultrapure water so that a conductivity or specific resistance of the ultrapure water after the addition satisfies a specified value, and an apparatus therefor.

A split-type blade, a fluid drive device and a fluid drive proportional mixer. The split-type blade is used as a component of the fluid drive device to convert pressure energy of fluid into mechanical energy. The split-type blade comprises: one or more push rods, each push rod being suitable for being arranged on a rotor of the fluid drive device in a radially slidable manner; and two valve plates, the two valve plates being respectively mounted in parallel at two end portions of the push rods, and each valve plate extending outwards along the push rods to form the split-type blade having a running-through push rod structure. In this way, when the split-type blade drives the rotor to rotate under the effect of a fluid, the push rods of each split-type blade slide in a radial direction relative to the rotor.

A compounding apparatus for mixing at least two materials into an admixture can include a processor and software configured to select a non-universal ingredient for substitution as a temporary universal ingredient to be used as a buffer when an original universal ingredient buffer is not available. The processor and software can also include an auto adjust feature to correct for tube wear and other factors creating non-compliant final bag fills. The processor and software can also include a disable station designation feature that allows for disabling a problem station and diverting operation from the designated disabled station to a substitute station. Such operation can ensure continued production of the compounding apparatus.

A system for treating the hair, to be connected to a water inlet, that includes at least one source of a cosmetic product, a water-dispensing device to convey the water to the hair, an adjustment device making it possible to inject, into the water, the product originating from the at least one source of product and to vary the content of product originating from this source in the water conveyed to the hair by the dispensing device and/or the amount of product conveyed to the hair by the dispensing device, this adjustment being able to assume at least one intermediate value between minimum and maximum content and/or amount values, a pressure booster to increase the pressure of the water at the inlet of the dispensing device beyond the pressure of the water at the inlet of the system.

An admixing system for fire-extinguishing installations is provided for generating a mixture (premix) of extinguishing medium and extinguishing medium additive by admixing an extinguishing medium additive to an extinguishing medium. The admixing system has a motor that can be driven by a flow of extinguishing medium, an admixing pump that is connected to the motor and serves for supplying the extinguishing medium additive to an extinguishing medium additive inlet line, an admixing line, and an extinguishing medium additive outlet line from which the extinguishing medium additive is admixed to the extinguishing medium in the admixing line. The admixing pump is a piston pump having multiple cylinders and at least two outputs connected to the cylinders. At least one first output, through which return flow is possible, can be switchably fluidically connected either to a return flow line through which the extinguishing medium additive flows back to the admixing pump, or to the extinguishing medium additive outlet line. If the extinguishing medium additive flows from the return-flow-compatible output back to the admixing pump, it is therefore not admixed to the extinguishing medium in the admixing line. Thus, the admixing rate can be changed simply by means of this switching.

Embodiments of the present application provide a liquid supply system and a liquid supply method. The liquid supply system includes: a mixing tank, the mixing tank being connected to at least a first injection pipe, a second injection pipe and a replenishing pipe; the first injection pipe and the second injection pipe being configured to inject a first liquid and a second liquid into the mixing tank respectively, so as to form a mixed liquid; a parameter acquisition module configured to acquire a concentration of the first liquid in the mixed liquid; and a treatment module configured to control, based on the acquired concentration of the first liquid and a preset concentration of the first liquid, the replenishing pipe to inject the first liquid with a first flow rate into the mixing tank, or inject the second liquid with a second flow rate into the mixing tank.

A first solution is mixed and diluted with diluting liquid to make a first dilute solution, a second solution is mixed and diluted with diluting liquid to make a second dilute solution, and the first dilute solution and second dilute solution, both diluted with diluting liquid, are mixed in a sealed tank.

A admixing system for fire extinguishing systems for producing an extinguishing agent-extinguishing agent additive mixture (premix) by mixing an extinguishing agent additive with an extinguishing agent. The admixing system has a motor that can be driven by a flow of extinguishing agent, an admixing pump connected to the motor for pumping the extinguishing agent additive, an admixing line, and an extinguishing agent additive line, from which the extinguishing agent additive is mixed with the extinguishing agent in the admixing line. The admixing system has a branching line, from which a part of the flow of extinguishing agent can be branched off if the load in the fire extinguishing system only requires a small flow of extinguishing agent. In this manner, the flow of extinguishing agent flowing through the motor is artificially increased so that the motor runs in a higher rotational speed range in which a reliable operation of the motor is ensured (a so-called start-up flow reduction). The admixing system has a motor rotational speed measuring device and a controller, said controller being designed to completely or partly open and/or close the branching valve on the basis of the motor rotational speed measured by the motor rotational speed measuring device.

A liquid dispensing pump (10) comprises: a first liquid storage cylinder (11), a second liquid storage cylinder (12), a first plunger (13) movably connected to the first liquid storage cylinder (11), a second plunger (14) movably connected to the second liquid storage cylinder (12), and a drive assembly (15) connected to the first plunger (13) and the second plunger (14). The first liquid storage cylinder (11) is provided with a first liquid entry and exit port (111). The second liquid storage cylinder (12) is provided with a second liquid entry and exit port (121). One end of the first plunger (13) is inserted into an internal cavity of the first liquid storage cylinder (11). One end of the second plunger (14) is inserted into an internal cavity of the second liquid storage cylinder (12). Further provided is a liquid dispensing device (100). The advantageous effect of the invention is: during each linear reciprocating movement cycle of the first plunger (13) and the second plunger (14), the first liquid storage cylinder (11) and the second liquid storage cylinder (12) discharge corresponding ingredients according to a pre-determined mixing ratio, and a mixed solution according to the pre-determined mixing ratio is obtained, thereby achieving precise mixing of different ingredients. In addition, the dispensing pump (10) discharges ingredients at a consistent ratio, thereby achieving uniform mixing without a dedicated mixer.

An adding system for fire-extinguishing units is disclosed for producing a mixture of extinguishing agent and extinguishing agent additive (premix) by adding an extinguishing agent additive, e.g., a foaming agent, to an extinguishing agent, e.g., water, the adding system comprising a motor, which can be driven by the extinguishing agent stream, an adding pump, which can be driven by the motor, an adding line, and an extinguishing agent additive line. The invention increases the operational reliability of an adding system for fire-extinguishing units by the outer wall of the working chamber of the motor being in the form of a rotation motor, which can also have the shape of a logarithmic spiral. Furthermore, the wall of the drainage housing of the motor, which is in the form of a rotation motor, can have a through-slot for letting the extinguishing agent in and/or out. Moreover, the inlet of the adding pump can be arranged such that the extinguishing agent additive can flow into the adding pump substantially parallel to the movement direction of the pistons of the adding pump. Finally, the adding pump can have an integrated relief valve.