摘要:
An extrusion device includes a container, a pump, a plurality of pipes, and an adjustment device. The container has a chamber, and a first inlet/outlet and a second inlet/outlet connected to the chamber, wherein the chamber is adapted to contain a fluid inside. The pipes are connected between the pump and the first and second inlet/outlets of the container, so as to form a fluid loop. The pump is adapted to drive the fluid to flow inside the fluid loop. The adjustment device is coupled to the container for adjusting a volume of the chamber. Further, a coating system is also provided.
摘要:
Assembly for dispensing a liquid, in particular a colorant for paint, comprising a container for holding a liquid, a pump, a valve, at least one dispense opening, and comprising or associated with a controller arranged to operate the pump and the valve to withdraw liquid from the container and to dispense liquid via the opening and to operate the pump and the valve to purge liquid from the pump to the container via the dispense opening.
摘要:
The invention relates to a method for metering a fluid medium by means of a metering device in the form of a piston pump having a cylinder (Z) and a movable piston (3), wherein the cylinder (Z) and the piston (3) form a working space (A), characterised in that in a first method step a given filling quantity of the fluid medium is conveyed into the working space (A), wherein the filling quantity is greater than the predefined quantity to be metered, and in that in a further method step the piston (3) reduces the size of the working space (A) to such an extent that the quantity to be metered remains in the working space (A), wherein at the same time a valve (18, 18′) is opened so that the gas volume separated in the working space (A) and/or the excess fluid medium can flow out of the working space (A) through the piston, wherein to this end the piston (3) has at least one axially running through-channel (17, 17′) which is connected to a return line (19, 19′), and at least the controllable valve (18, 18′) and/or a non-return valve is arranged in the through-channel (17, 17′) and/or the return line (19, 19′).
摘要:
Device for dosing dyes in solution or dispersion for the preparation of dye baths for textile materials, comprising a plurality of pipettes (1) individually connected to corresponding bottles or containers (6) containing the said dyes, the said bottles or containers being respectively connected to a dosing head (8) through corresponding ducts (9) from which the dyes exit. The device comprises programmable means (EU) which individually control the said pipettes (1) and respective electrovalves (4) and which, depending on the formulation programmed to realize a dye bath, operate the automatic subdivision or selection of the electrovalves (4) in two groups. A first group of electrovalves (4) initially connect the respective bottles (6) with the corresponding pipettes (1) through the ducts (5) and (7), as the electrovalves (4) of the second group, and in a subsequent step connect the respective pipettes (1) with the dosing head (8) through the ducts (5) and (9) and then restore the individual links once the dosing is completed; the electrovalves (4) of the second group constantly maintain the connection between the respective pipettes (1) and the corresponding bottles (6).
摘要:
Colorant fluid dispensing device (1) for dispensing multiple colorant fluids, comprising more than one fluid container (2) at least one dispenser outlet (3), wherein the fluid containers are in fluid connection with the at least one dispenser outlet via pumping means (4) the pumping means comprises more than one piston pump (5), each piston pump comprises a central pump tube (15) in which a piston (20) is provided with a piston rod (21) for moving the piston inside the central pump tube, the colorant fluid dispensing device further comprises driving means (36) for moving the piston rods of said piston pumps, control means (38) for controlling the driving means, and the driving means comprises a movable selector (37) configured to engage the piston rods of a selection.
摘要:
In accordance with the present invention there is provided a dispenser apparatus for dispensing fluids. The dispenser apparatus includes a centrally located vertically mounted column assembly. A plurality of canisters is cantilever mounted to the column assembly. Each canister has a receptacle for holding a fluid and each receptacle includes a corresponding pump for dispensing fluid held therein. The dispenser apparatus also includes a stationary dispensing station having a mechanism for selectively actuating the pump for dispensing fluid held in the receptacle. A mechanism is also provided for engaging a portion of a canister to align a pump corresponding to a receptacle to the stationary dispensing station, wherein the fluid held in the receptacle may be dispensed.
摘要:
The present invention relates to a method of dispensing accurately small amounts of high viscosity lubricant components using tubeless positive-displacement liquid-handling equipment for forming lubricant blends. The method includes the steps of: providing a low void volume positive displacement pipette with a tapered tip for each lubricant component contained within a lubricant additive reservoir, and one or more lubricant blend containers; ingesting into a low void volume positive displacement pipette from a lubricant additive reservoir an ingestion volume of a lubricant component; moving the low void volume positive displacement pipette from the lubricant additive reservoir to the one or more lubricant blend containers; ejecting into the one or more lubricant blend containers an ejection volume of the lubricant component from the low void volume positive displacement pipette; returning the low void volume positive displacement pipette from the one or more lubricant blend containers to the additive reservoir; and repeating these steps for each additional lubricant component. The advantages of the method of the present invention include improved dispensing accuracy, quicker dispensing, lower shear rate during dispensing, lower temperature for dispensing, less residual additive on the tip of the device after dispensing, and the ability to real time monitor density and mass during dispensing. The method finds application in laboratory test environments, and in particular in high throughput testing environments.
摘要:
According to an embodiment of the present technique, there is provided a plural component finishing dispenser system including a multi-cartridge support configured to receive a plurality of finishing component cartridges in a proportion to control a mixture ratio of a plurality of different finishing components, a drive configured to displace fluid at an equal linear rate in the plurality of finishing component cartridges, and an outlet for each different finishing component. There is further provided a method for positively displacing different finishing substances at an equal linear rate independently through different cartridges at a cartridge ratio that controls a downstream mixture ratio of the different finishing substances.
摘要:
In accordance with an embodiment of the present invention there is provided a dispenser apparatus for dispensing fluids. The dispenser apparatus includes a rotatable table, a plurality of dispensing units. Each dispensing unit has a receptacle for holding a fluid, and each receptacle includes a corresponding pump for dispensing fluid held therein. The dispensing units have a base portion to detachably attach the units to the rotatable table. The dispenser apparatus further includes a stationary dispensing station that has a pump actuator for dispensing fluid held in the receptacle. The apparatus further includes a mechanism for engaging the base portion of a dispensing unit. The mechanism when activated, moves the dispensing units thus rotating the table to align a pump corresponding to a receptacle to the stationary dispensing station, wherein fluid held in the receptacle may be dispensed.
摘要:
In accordance with the present invention there is provided novel and unique automatic and manual colorant and hair dye dispensers that are easy to operate and provides precision mixing of a large number of colorants and hair dye to make an almost infinite number of colors. The machines are relatively light in weight, easy to operate and maintain and the various components can be readily and easily replaced. In the colorant dispenser this is principally due to the fact that the colorant canisters are supported by a central column and the conventional use of a massive turntable supporting the canisters have been eliminated. In both the automatic and manual illustrated embodiments there is shown six (6) pie-shaped triangular canister units (dispensing units) each including three (3) separate colorant receptacles. There can be more or less dispensing units as desired.