Creating the technology-sapphire pump dispensers

Title of project: Creating the technology-sapphire pump dispensers

Cluster: BIO

Technology Tags or Keywords: metering pump, metering devices, pumping device, single crystal sapphire, leucosapphire; plunger, piston, hydraulic device, hydraulic pump.

Title: The  method for processing cylindrical surfaces of sapphire parts, sapphire plunger pair and metering pump on its basis

Summary: The  method of manufacturing of sapphire plunger assembly allows to achieve the level  of  rubbing surface roughness (working) sapphire assemblies  till   3-5 angstroms, significantly reduce the coefficient of friction of the plunger assembly, which significantly affects on increasing the service life of the sapphire plunger assembly in the metering and pumping devices.

Technology Benefits : Increasing the service life of sapphire metering pump in 10 times guaranteed.   Special chemical purity of medications, no oxides.  Eco-friendly and harmless production.

Technology Applications: The technology can be used in the manufacture of sapphire pumping and metering devices in different areas of the industry, in the filling and packaging liquid media in any ampoules, vials, syringes, and other containers. The use in the pharmaceutical, food, cosmetic, perfume, chemical and other fields of industry.

Detailed Technology Description: Manufacturing process takes place on the way to a landmark. From the "big" to "small." Processing diamond tool sapphire cylindrical surfaces. Rough grinding, medium grinding, fine grinding.

International PCT Application number:

РСТ/RU2013/000342;
PCT/RU2015/000433;
РСТ/ RU2015/000491;
РСТ/RU2015/000492.

Title of application: 

Hydraulic unit volumetric displacement for the transfer and / or dosing liquids;
Methof for processing of rubbing surfaces of parts made of artificially grown single crystal based on the alpha-AL2O3;
The metering pump.

Application Date: 09.07.2015

Application description (abstract):

National application Number: EA201500475

Patent Number:

EP2939810;
RU2521129;
RU2578373

Patent title:  METHOD FOR PROCESSING CYLINDRICAL SURFACES OF SAPPHIRE PARTS, A SAPPHIRE PISTON PAIR AND A METERING PUMP ON THE BASIS THEREOF

Patent Date: 

22.04.2013
29.02.2016

Patent description (abstract): The invention belongs to the pump elements and the pump-element-based dosing pumps, to fabrication of devices and parts thereof, in particular, to the method of machining of cylindrical surfaces of parts of aluminiumoxide-α-modification-based crystal. The pump element comprises the external and the internal parts of aluminium-oxide-α-modification-based crystal, preferably of leucosapphire single crystal, with roughness Ra of contacting working faces of 2-5 angstrom. The surface smoothness is achieved by the machining method comprising drilling of parts’ preliminary workpieces of crystal using diamond tool, three-step machining of surface with diamond tool in the presence of lubricating fluids with successive reduction of abrasive grain size, relieving of internal stress in workpieces through annealing in the muffle furnace, surface machining with semi-soft or soft polishing wheel or lap with diamond grain size of 5/3 um and/or 1/0 um on clock oil, surface tribochemical polishing with colloidalSiO2-based polishing compound. This invention allows increasing service life of pump elements as components of dosing pumps, and prolonged maintaining of dispensed liquids’ dosing accuracy due to rubbing surfaces’ friction coefficient reduction.

Country of validity of patent: Eupope, Russia

Organization/Company Name: FarmaSapfir

Country: Russia