专利摘要:

公开号:SU925257A3
申请号:SU792781852
申请日:1979-06-22
公开日:1982-04-30
发明作者:Гиган Жан
申请人:за витель (S) УСТРОЙСТВО дл ДОЗИРОВАНИЯ жидкого ВЕЩЕСТВА К ПАТЕНТУ;
IPC主号:
专利说明:

t
The invention relates to devices for dispensing liquid liquidity.
A device for dispensing a liquid substance is known, which contains a receptacle, a sampler located vertically above the receiving container and equipped in the lower part with a tube of smaller diameter, a device for sampling a liquid substance into the sampler, and a cooling chamber located outside the tube.
A disadvantage of the known device is the impossibility of accurate dosing of the sampled sample and the difficulty of automatic control of the process.
The purpose of the invention is to improve the accuracy of dosing and automation of production.
This goal is achieved by the fact that a device for dispensing a liquid substance containing a receiving tank, a sampler located vertically above the specific capacity and
equipped in the lower part with a tube of smaller diameter, a device for sampling a liquid substance into the sampler and the refrigerating chamber located outside the tube, is equipped with a device for cutting the frozen sample at the tube outlet, containing a laser generator, an optical system connected to it, generating a beam of light, Electro-optical receiver circuit processing of the light beam connected to a laser generator, and the sampler is equipped with a piston with a rod, it is advisable to make the optical system in the form of l Inza, a device to provide a means for heating a frozen and cut sample, a device for heating to provide a generator of infrared
20 radiation, the inner surface of the sampler should be covered with a layer of material with a low friction coefficient
权利要求:
Claims (3)
[1]
The sample is cooled simultaneously with the removal of the sample from the sampling tube and with sufficient intensity to form a continuous vertical cord of frozen substance in the tube. FIG. 1 shows the device a general view; in fig. 2 - tube, longitudinal section. The device contains a sampler 1, for example of glass, provided at the bottom with a tube 2 of smaller diameter, calibrated with an internal cross section, for example, one square millimeter, above which tube 3 of full diameter is located. Both tubes are mounted on the same vertical axis, and tube 3 is made with a narrowed lower part A. Inside tube 3 there is a piston 5 with a rod 6, the upper end of which enters the eyelet 7 located at the end of the lever 8 installed with rotation around a horizontal axis 9.. The shoulder of the lever 8, opposite to that in which there is an eye 7, b interacts with a cam 10 mounted rotatably around horizontal axis 1; The lever 8 is provided with a spring 12, one end of which is rigidly connected to a fixed point 13 in the vertical plane of rotation of the lever 8, 1ri this other end of this spring is fixed on the lever 8. The cam 10 is driven to rotate around the axis 11 with the help of the electric motor N. The side opening 15 located in the lower part of the tube 3 is connected by pipeline 16 to the reservoir 17, which contains liquid substance 18, for example, a reagent. Around the calibrated tube 2, the chamber 19 is connected by means of two pipelines 20 and 21 to a refrigeration unit 22. Under the sampler 1 there is a laser generator 23, for example, a neodymium laser type emitting a horizontal laser beam 2k, on the path of which is an optical system 25, which has the ability to focus the energy of the beam 2k at a point 26 located on the continuation of the vertical axis 27 of the calibrated tube 2. The light emitting diode 28, fed from the source 29, emits a horizontal light. A product beam 30 that intersects axis 27 at point 31, located below point 26 at a certain distance (on the order of 5 mm), and cuts off segment 32. Beam 30 is intercepted outside point 31 by photodetector 33, whose electrical output is connected to trigger circuit 3, which, in turn, is connected to a laser generator 23. Under the point 31, there is a tubular electric furnace 35, and its vertical position covers the axis 27. Under the furnace 35 is located the vessel 36 largely along axis 27.. The inner cylindrical surface of tube 2 is covered with a layer 37 of material with a low coefficient of friction, for example polytetrafluoroethylene, and this layer can continue, as shown, up to the connecting wall k (Fig. 2). Inside the pipe 16 is a valve 38. The motor 14 is equipped with a radiator 39. The device operates as follows. The rotation of the cam 10 causes a variable rotation from bottom to top and from top to bottom of the lever 8 around its axis 9. This variable rotation leads to a variable vertical movement of the piston 5 - In the position shown in FIG. 1, the piston 5 is in its lowest position just above the hole 15, the highest position of the piston 5 is represented by a dotted line in position 5, and this position corresponds to the position 8 of the lever 8 .. When the piston 5 rises in the tube 3, the liquid substance 18 is sucked through The pipe 16 into the tube body 3- As soon as the piston 5 presses down, the liquid substance is pushed into the calibrated tube 2. The valve 38 prevents any substance being pumped out into the pipe 16 to the tank 17. Circulating coolant in chamber 19 The intensive cooling and freezing of the substance occupying the internal volume of the tube 2 is observed. The cooling liquid may, for example, be at a temperature of the order of. This cooling is sufficiently energetic that under the action of pressure applied from top to bottom by means of a piston 5 to the upper level of the substance contained in the tube 3 in the calibrated tube 2, a continuous vertical cord of the frozen substance is formed. The slip of the cord along the inner wall of the tube 2 is facilitated by the presence of the cover 37. When the lower end of the cord reaches the light flux 3, some of the energy of this flux is dissipated or reflected by the cord. Consequently, the illumination of the photodetector 33 decreases, which leads to a decrease in the amplitude of the electric signal generated by the photoreceiver 33. Scheme 3 responds to this decrease in amplitude, causing a laser pulse. The laser energy, concentrated at point 26, causes a cord break at that point. The length 32 of a certain length is separated from the cord and falls into the vessel 36. The internal volume of the tube 3 allows enough substances to be contained to ensure consistent separation from the cord of equal parts of the same segments during one lowering period of the piston 5. These segments, thus fall into many vessels, such as ST, which are located on the conveyor. moving in the transverse direction relative to the axis 27. It should be noted that the dosage accuracy can be further increased by using a cylindrical lens arranged as a focusing optical system to concentrate the beam energy along the segment that forms the cord perpendicular to its axis. the metered dose in the vessel can be cut off the cord with the help of known mechanical devices, for example, with the help of two knives, thermal means, or a straight conductor wire, on hot to high which temperature and moved in a horizontal plane. A section of frozen liquid placed in the STB vessel is gradually heated from contact with ambient air and after some time is again in the liquid state. Due to the furnace 35, the section can be heated during the fall, while the segment is in the liquid state the moment it enters the vessel 36 Warming up the segment before it enters the vessel may be necessary when the ST vessel is small and the segment is relatively long. In this case, the entire entirely length of the frozen segment cannot fit in the internal volume of the vessel, and part of the substance may be poured out of the vessel at the time of heating the segment. Technical and economic advantages of the proposed device are due to the fact that it allows to increase the accuracy of dosing and to provide automation of the process. 1. An apparatus for dispensing a liquid substance, comprising a receiving container, a sampler located vertically above the receiving container and provided in the lower part with a tube of smaller diameter, a device for sampling a liquid substance into the sampler and a refrigerating chamber located outside the tube, aphid .e with the fact that, in order to improve the accuracy of dosing and automation of production, the device is equipped with a device for cutting a frozen sample at the outlet of the tube containing a laser a generator, an optical system connected to it, a light beam generator, an electro-optical receiver, a light beam processing circuit connected to a laser generator, and the sampler is equipped with a piston with a rod.
[2]
2. A device according to claim 1, characterized in that the optical system is designed as a lens.
[3]
3. The device according to paragraphs. 1 and 2, characterized in that it contains means for heating the frozen and cut sample. k. A device in accordance with claims 1 to 3, characterized in that the heating device is equipped with an infrared radiation generator. 5. The device according to PP. 1-, characterized in that the inner surface of the sampler is covered with a layer of material with a low coefficient of friction. Sources of information taken into account in the examination 1. USSR author's certificate tf 733tS ,. cl. G 01 N I / I, 19 "6.
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同族专利:
公开号 | 公开日
IL57487A|1983-05-15|
BR7903962A|1980-02-20|
DK263079A|1979-12-24|
MX148134A|1983-03-16|
FR2429418B1|1980-10-31|
RO81191B|1983-01-30|
DE2962437D1|1982-05-19|
IE791177L|1979-12-23|
ES481825A1|1980-02-16|
RO81191A|1983-02-01|
FR2429418A1|1980-01-18|
AU525733B2|1982-11-25|
JPS554593A|1980-01-14|
IL57487D0|1979-10-31|
IE48293B1|1984-11-28|
EG14226A|1983-12-31|
IN152238B|1983-11-26|
EP0006556A1|1980-01-09|
EP0006556B1|1982-04-07|
AU4828379A|1980-01-03|
US4226266A|1980-10-07|
CA1115984A|1982-01-12|
引用文献:
公开号 | 申请日 | 公开日 | 申请人 | 专利标题

US3844896A|1970-10-29|1974-10-29|Lever Brothers Ltd|Apparatus for performing bacteriological tests automatically|
US3958045A|1971-12-09|1976-05-18|Coleman Charles M|Method of making an automatic volume control pipet|
US4015440A|1974-11-13|1977-04-05|Airco, Inc.|Apparatus for depositing carbon dioxide snow|GB8315611D0|1983-06-07|1983-07-13|Ici Plc|Feeder for centrifugal apparatus|
FR2639529B1|1988-11-29|1992-03-06|Basch Armand|DEVICE FOR PRESENTING SUPERIMPOSED LAYERS OF LIQUIDS OF DIFFERENT DENSITIES, ESPECIALLY FOOD LIQUIDS|
US5197633A|1992-01-21|1993-03-30|Hines Industries, Inc.|Material metering apparatus|
GB2388585A|2002-05-17|2003-11-19|Unilever Plc|Dosing system with multi-spout nozzle|
DE10233662B4|2002-07-24|2004-07-22|Uhu Gmbh & Co. Kg|Filling system for a product made of viscous material|
KR100647282B1|2003-12-24|2006-11-17|삼성전자주식회사|Spoting device for manufacturing DNA microarray and spoting method using the same|
CN113665862B|2021-10-25|2021-12-24|南通市技美自动化设备有限公司|Intelligent automatic packaging equipment for liquid|
法律状态:
优先权:
申请号 | 申请日 | 专利标题
FR7818831A|FR2429418B1|1978-06-23|1978-06-23|
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