SU822020A1

SU822020A1 - Device for conducting radio chemical analysis of milk

Info

Publication number: SU822020A1
Application number: SU792728202A
Authority: SU
Inventors: Вера Анатольевна Антонова; Олег Николаевич Прокофьев; Владимир Иванович Антонов
Original assignee: Ленинградский Научно-Исследовательскийинститут Радиационной Гигиены
Priority date: 1979-01-08
Filing date: 1979-01-08
Publication date: 1981-04-15

Description

Изобретение относится к устройствам для проведения радиохимического анализа жидких проб и может бытьиспользовано в санитарно-дозиметричес- _ ком контроле за содержанием радио- ⁵нуклидов в пищевом сырье и' продуктах питания.The invention relates to devices for conducting radiochemical analysis of liquid samples and can be used in sanitary dosimetric monitoring of the content of radio- ⁵ nuclides in food raw materials and food products.

Известно устройство для проведения радиохимического анализа молока,содержащее подставку, на которой уста- , новлены сосуды для исходной пробы и реагентов, поплавковые регуляторы уровня и колонка с фильтрующим веществом, соединенные между собой трубками через тройниковые краны, а так- 15 же приемные сосуды, размещенные на подвижно установленной каретке со стопорной скобой [1].A device for conducting radiochemical analysis of milk is known, comprising a stand on which vessels for the initial sample and reagents are installed, float level controls and a column with filtering substance, interconnected by tubes through tee taps, as well as receiving vessels placed on a movably mounted carriage with a locking bracket [1].

Недостатком данного устройства является наличие двух насосов, пи- 20 тающихся от сравнительно мощного источника электроэнергии, что делает невозможным его применение в полевых условиях.The disadvantage of this device is the presence of two pumps powered by a relatively powerful source of electricity, which makes it impossible to use it in the field.

Цель изобретения — упрощение кон- 25 струкции и снижение энергозатрат на проведение анализа.The purpose of the invention is to simplify the design and reduce energy consumption for analysis.

Поставленная цель достигается тем, 'что в устройстве для проведения радиохимического анализа молока, со- 30 держащем подставку, на которой уста нолены сосуды для исходной пробы и реагентов, поплавковые регуляторы уровня' и колонка с фильтрующим веществом, соединенные между собой трубками через тройниковые краны, а также приемные сосуды, размещенные на подвижно установленной каретке со стопорной скобой, пробки тройниковых кранов снабжены пружинами кручения й рычагами, а регуляторы уровня - стержнями ., взаимодействующие с последними, при этом рычаги пробковых кранов связаны со стопосной скобой посредством гибкой связи.This goal is achieved by the fact that “in a device for conducting radiochemical analysis of milk, containing a stand on which vessels for the initial sample and reagents, float level controls are mounted” and a column with a filter substance, interconnected by tubes through tee taps, as well as receiving vessels placed on a movably mounted carriage with a locking bracket, the plugs of the tee taps are equipped with torsion springs and levers, and the level controllers are equipped with rods., interacting with the latter, when th leverage plug valves associated with stoposnoy bracket by a flexible connection.

На фиг. 1 изображено устройство, общий вид; на фиг. 2 — то же,вид сверху; на фиг. 3 — разрез А-А на фиг..2 .In FIG. 1 shows a device, a General view; in FIG. 2 - the same, top view; in FIG. 3 - section aa in Fig.2.

Устройство включает подставку 1, на верхней площадке 2 которой установлены сосуды 3-5 для исследуемомого молока, воды и солянокислого раствора. Сосуды 3-5 соединены трубками 6—8 с регуляторами 9-11 уровня расположенными на средней площадке 12 подставки 1. Каждый из регуляторов 9-11 содержит стакан 13 со штуцером 14 в дне и с крышкой 15. Внутрь стакана 13 свободно встав лен поплавок 16 с запорной иглой 17 для закрытия отверстия штуцера 18, закрепленного в крышке 15. В регуляторах 9-11 уровня к поплавку' 16 присоединен шарнирно стержень 19 для взаимодействия с поворотной в вертикальной плоскости защелкой 20, предназначенной для удержания находящего под действием пружины 21 кручения рычага 22 в начальном положении, а рычаг 22 в свою очередь прикреплен , жестко к робке 23 тройниковых кранов 24 и 25.The device includes a stand 1, on the upper platform 2 of which vessels 3-5 are installed for the test milk, water and hydrochloric acid solution. Vessels 3-5 are connected by tubes 6–8 with level 9–11 controllers located on the middle platform 12 of stand 1. Each of the 9–11 controllers contains a glass 13 with a fitting 14 in the bottom and with a cover 15. A float 16 is freely inserted inside the glass 13. with a locking needle 17 to close the opening of the fitting 18 fixed in the cover 15. In the level controllers 9-11, the float '16 is pivotally connected to the rod 19 for interacting with the latch 20 rotated in the vertical plane, designed to hold the torsion spring 21 under the action of the lever 22 in the initial the decomposition, and the lever 22, in turn, is attached rigidly to the timid 23 tee 24 and valves 25.

Регуляторы 9 ны трубками 26 через краны 24 27, в которую уровня соединепоследовательно и 25 с колонкой закладывается фильт рующее вещество 28. Под колонкой 27. расположены .приемные сосуды 29 и 30, установленные на передвижной каретке 31, опирающейся на ролики 32. Пружина 33 одним концом прикреплена к под- 20 ставке 1,а другим к каретке 31 и служит для перемещения каретки из одного крайнего положения в другое (при смене сосудов под колонкой), а стопорная скоба^к 34, прикрепленная шарнирно к 25 подставке 1, служит для удержания каретки 31 в одном из крайных положений. Для освобождения каретки 31 крюк 34 соединен тросиком 35 с рычагом 22 переключения крана 24. Дроссель 36 установлен на выходном отверстии колонки 27 и служит для регулировки расхо да жидкости.The regulators 9 are connected by tubes 26 through cranes 24 27, into which the level of the filter medium 28 is connected in series and 25 to the column. Under the column 27. there are receiving vessels 29 and 30 mounted on a movable carriage 31 supported by rollers 32. Spring 33 is one attached to the stand 20 with the end, and the other to the carriage 31 and serves to move the carriage from one extreme position to another (when changing vessels under the column), and the locking bracket ^ to 34, pivotally attached to the 25 stand 1, serves to hold carriages 31 in one of the extreme position s. To release the carriage 31, the hook 34 is connected by a cable 35 to the lever 22 of the crane 24. The throttle 36 is installed on the outlet of the column 27 and serves to adjust the fluid flow rate.

Устройство работает следующим об разом.The device operates as follows.

Краны 24 и 25 устанавливаются в ис->5 ходное положение так, чтобы.подпружиненные рычаги 22 удерживались защелкой 20, предварительно развернув стержни 19 так, чтобы они не взаимодействовали с защелками 20. 40Cranes 24 and 25 are set in their original -> 5 position so that the spring-loaded levers 22 are held by the latch 20, having previously deployed the rods 19 so that they do not interact with the latches 20. 40

Передвижную каретку 31 устанавливают в исходное положение, зацепив скобой 34, при этом пружина 33 растянивается, а приемный сосуд 29 находится под колонкой 27.The movable carriage 31 is set to its original position, hooked with a bracket 34, while the spring 33 is stretched, and the receiving vessel 29 is located under the column 27.

Сосуд 3 заливается молоком, сосуды 4 и 5 заливаются соответствующими реагентами: сосуд 4 - водой, сосуд 5 — солянокислым' раствором, .при этом происходит заполнение регуляторов __ уровня 9 - 11, поплавки 16 всплывают и запорными иглами 17 перекрывают доступ жидкостей в стаканы 13 регуляторов уровня 9 — 11. После этого стержни 19 поворачиваются так, чтобы они находились под защелками 20. 55Vessel 3 is filled with milk, vessels 4 and 5 are filled with the appropriate reagents: vessel 4 - with water, vessel 5 - with hydrochloric acid solution. At the same time, the regulators __ level 9 - 11 are filled, floats 16 float and shut-off needles 17 block the access of liquids to the glasses 13 level controls 9 - 11. After that, the rods 19 are rotated so that they are under the latches 20. 55

Поскольку стержни поднялись вверх вместе с поплавками 16, то они не действуют на защелки. 20. Одновременно заполняется молоком из сосуда колонка 27 при исходном- положении $q кранов 24 и 25. ' 'Since the rods rose up together with the floats 16, they do not act on the latches. 20. At the same time, column 27 is filled with milk from the vessel at the initial position $ q of the cranes 24 and 25. ''

Открытием дросселя 36 начинается пропускание молока через фильтрующее вещество 28, при этом сосуд 3 опорожняется. После того, как жидкость в сосуде 3 опускается ниже уровня отводной трубки 6, начинается понижение уровня жидкости в стакане 13 и поплавок 16 регулятора уровня 9 опускается, при этом стержень 19 давит на плечо защелки 20, которая освобождает рычаг 22, при этом под действиет пружины 21 пробка 23 крана 24 поворачивается на 90°. После переключения крана 24 жидкость из сосуда 4 поступает в колонку 27. После того, как жидкость в сосуде 4 опускается ниже отводной трубки 7, начинается опускание поплавка 16 в регуляторе уровня 10. После срабатывания защелки 20 регулятора 10 уровня происходит поворот рычага 22 крана 26, и жидкость из сосуда 5 поступает в колонку 27. С помощью тросика 36, связанного с рычагом 22, подымается крюк 34 и каретка 31 под действием пружины 33 перемещается в другое крайнее положение, в котором приемный сосуд 30 находится под колонкой 27. После истечения жидкости из сосуда 5 анализ заканчивается.The opening of the throttle 36 begins the passage of milk through the filter substance 28, while the vessel 3 is emptied. After the liquid in the vessel 3 falls below the level of the outlet pipe 6, the lowering of the liquid level in the glass 13 begins and the float 16 of the level regulator 9 drops, while the rod 19 presses on the shoulder of the latch 20, which releases the lever 22, while under the action of the spring 21 plug 23 of the crane 24 is rotated 90 °. After switching the tap 24, the liquid from the vessel 4 enters the column 27. After the liquid in the vessel 4 falls below the bypass tube 7, the float 16 in the level controller 10 is lowered. After the latch 20 of the level controller 10 is activated, the lever 22 of the crane 26 is rotated. and the liquid from the vessel 5 enters the column 27. Using the cable 36 connected to the lever 22, the hook 34 is lifted and the carriage 31 moves under the action of the spring 33 to another extreme position, in which the receiving vessel 30 is located under the column 27. After the liquid has drained from with trial 5 analysis ends.

Устройство дает значительное сокращение затрат рабочего времени на подготовку пробы к радиохимическому анализу за счет исключения таких длительных процедур, как сжигание и озоление пробы,или извлечение изотопа из жидкой пробы на сорбент, что влечет экономию электроэнергии по сравнению со способом озоления, исключается постоянная работа химика при пропускании пробы через колонку -с сорбентом и десорбции изотопа с сорбента в раствор. Устройство имеет существенно более высокие технологические иэстетические показатели проведения подготовки пробы к радиохимическому анализу.The device provides a significant reduction in the time spent on preparing a sample for radiochemical analysis by eliminating lengthy procedures such as burning and ashing the sample, or extracting an isotope from a liquid sample to a sorbent, which entails energy savings compared with the method of ashing, eliminating the chemist's constant work when passing the sample through the column with the sorbent and desorption of the isotope from the sorbent into the solution. The device has significantly higher technological and aesthetic indicators of sample preparation for radiochemical analysis.

Claims

The invention relates to devices for radiochemical analysis of liquid samples and can be used in sanitary-dosimetric monitoring of the radionuclide content in food raw materials and food. A device for radiochemical analysis of milk is known, which contains a support on which vessels for the initial sample and reagents are installed, float level regulators and a column with a filtering substance, interconnected by pipes through tee valves, as well as receiving vessels, placed on a movable carriage with a locking bracket 1. The disadvantage of this device is the presence of two pumps / feeds from a relatively powerful source of electricity, which makes it impossible to use it in the field. The purpose of the invention is to simplify the design and reduce the energy consumption for analysis. This goal is achieved in the device for conducting radioactive analysis of milk, containing a stand on which vessels for the initial sample and reagents are installed, float level regulators and a filter substance column interconnected by tubes through tee taps, as well as receiving vessels, placed on a movably mounted carriage with a locking bracket, the corks of the tee valves are equipped with torsion springs and levers, and the level regulators have rods that interact with the latter, while cork chaga are connected to a STOP brace by means of flexible coupling. FIG. 1 shows the device, a general view; in fig. 2 - then above; in fig. 3 - section A-A in FIG. The device includes a stand 1, on the upper platform 2 of which vessels 3-5 for the test milk, water and hydrochloric acid solution are installed. Vessels 3-5 are connected by tubes 6–8 with level regulators 9–11, located on an average area of 12 legs of stand 1. Each of the tails of pipes 9–11 contains a cup 13 with a choke 14 at the bottom and with a cane 15.. Inside the cup 13 A float 16 is inserted loosely with a locking needle 17 to close the opening of the fitting 18 fixed to the lid 15. At the level regulators 9-11, a hinge 19 is connected to the float 16 and interacts with a rotary latch 20, which is rotatable under the action spring 21 torsion of the lever 22 in the initial The position of the lever 22, in turn, is rigidly attached to the timbered 23 t-piece cranes 24 and 25. Level controllers 9–11 are connected by tubes 26 in series through taps 24 and 25 to column 27, in which the junction is filled with filtering substance 28. Under column 27. there are located receiving vessels 29 and 30 mounted on a movable carriage 31 supported on rollers 32. Spring 33 is attached at one end to platform 1 and the other to carriage (e 31 and serves to move the carriage from one extreme position to another (not the vessels under the column), but the locking clip to 34, prikr pivotally to the stand 1, SERVE to hold the carriage 31 in one of the extreme positions. To release the carriage 31, the hook 34 is connected by a cord 35 to the lever 22 for switching the tap 24. The throttle 36 is mounted on the outlet of the column 27 and serves to adjust the flow fluid. The device works as follows. ... Cranes 24 and 25 are installed in the position and position so that the sprung levers 22 are held by the latch 20, having previously turned the wipe 19 so that they do not interact with the latches 20. The movable carriage 31 is set to its original position, hooking with the clip 34 , while the spring 33 is stretched, and the receiving vessel 29 is under column 27. The vessel 3 is filled with milk, the vessels 4 and 5 are filled with the appropriate reagents: vessel 4 with water, vessel 5 with hydrochloric acid solution, and level regulators 9 are filled -11, floats 16 float and the locking needles 17 block access of liquids to the cups 13 of the level regulators 9-11. After that, the rods 19 are rotated so that they are under the latches 20. Since the rods have risen upwards with the floats 16, they do not act on the latches. 20. At the same time, milk 27 from the vessel 3 is filled with the column 27 at the initial position of the taps 24 and 25. Opening the throttle 36 starts passing the milk through the filtering substance 28, and the vessel 3 is emptied. After the liquid in the vessel 3 is lowered below the level of the outlet tube 6, the lowering of the level of the liquid in the glass 13 begins and the float 16 of the level regulator 9 is lowered; at the same time, the rod 19 presses against the latch shoulder 20, which releases the lever 22, while under the action of the spring 21 the stopper 23 rotates the crane 24 by 90. After switching the valve 24, the liquid from the vessel 4 enters the column 27. After the liquid in the vessel 4 descends below the outlet tube 7, the float 16 starts to lower in the level controller 10. After the latch 20 of the controller 10 is actuated, the lever 22 rotates the crane 26 and the liquid from the vessel 5 enters the column 27. With the help of the cable 36 connected with the lever 22, the hook 34 is lifted and the carriage 31 under the action of the spring 33 moves to another extreme position in which the receiving vessel 30 is under the column 27 After the outflow of fluid and Vessel 5 analysis ends. The device provides a significant reduction in the time spent on preparing the sample for radiochemical analysis by eliminating such lengthy procedures as burning and ashing the sample, or removing the isotope from the liquid sample on the sorbent, which results in energy savings compared to the method of ashing, eliminating constant work chemist by passing the sample through the column with a sorbent and desorption of the isotope from the sorbent into the solution. The device has significantly higher technological and aesthetic indicators of sample preparation for radiochemical analysis. Apparatus of the Invention A device for performing a radiochemical analysis of milk, comprising a stand on which vessels for the initial sample and reagents, float level regulators and a filter substance column interconnected by tubes through tee taps and receiving vessels placed on a movable carriage are installed. with locking bracket., characterized in that, in order to simplify the design and reduce energy consumption for carrying out, analysis, the plugs of three-way cranes are equipped with torsion springs and the levers, and the level controls by the rods interacting with the latter, while the levers of the cork cranes are connected to the parking bracket by means of a link. Sources of information taken into account during the examination 1. US Patent No. 3.666420, cl. 23-253, 1972.

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