System for sampling and delivering filtrate for ionometry

FIELD: automatical aids for sampling liquids.

SUBSTANCE: system for sampling and delivering filtrate has filter submerged into tested medium and connected with collecting tank and vacuum pressure source which is connected with top hole of collecting tank by means of pneumatic pipe. System has sample receiving tank connected with collecting tank and control unit which has first output to be connected with vacuum pressure source. Collecting tank has two separated chambers - washing chamber and dispatching chamber. Lower hole of washing chamber has to be lower hole of collecting tank and side hole of dispatching chamber has to be side hole of collecting tank. Floating valve is installed inside washing chamber to shut off lower and top holes. Filter is connected with lower hole of collecting tank through sampling pipe. Side hole of collecting tank is connected with lower hole of tank for receiving samples through sampling pipe. Flow-type sensor and check valve are installed inside transportation pipe. Output of flow-type sensor is connected with input of control unit; second output of control unit is connected with control input of analyzer.

EFFECT: improved precision of measurement of sample ion composition; prolonged service life of filter.

1 cl, 1 dwg

 

The invention relates to automatic means of sampling liquid samples from open containers under the control of the material composition of industrial solutions, liquid phase slurries, sewage and other objects of non-ferrous metallurgy and can be used for similar purposes in the chemical and mining industries.

Known selection system liquid samples from open containers [1]. The system includes a sampling tube, one end of which is immersed in an open tank with technological investigated liquid medium, and the other end through direct valve is connected to the input of the filter. The input filter is advanced through the non-return valve is connected with the drain tube. The output of the filter through the distribution tube is connected with a source of vacuum pressure and measuring instrument.

By creating a vacuum in the distribution tube and thus into the sample tube, the end of which is submerged in the process of the investigated liquid medium, the liquid flows through the straight valve in the filter, through the filter it is filtered and the filtrate is sent to the measuring device.

By creating pressure in the distribution pipe, the excess part of the filtrate back into the liquid medium. The return is through the filter, check valve and drain tube.

Advantages Yes the Noah system is because the filter is located in close proximity to the measuring device. This allows you to quickly replace it if necessary. The regeneration of the filter is excessive portion of the filtrate (train), which, flowing through the filter in the reverse direction, cleans the filter channel filter. Additional return channel excess sample through the check valve and the receiver reset removes any particles accumulated on the filter into the sample tube.

However, this device does not provide reliable operation in the selection of the filtrate from slurries with a high content of solid particles, for example of flotation products containing up to 40% of solid particles per unit volume and having a particle size of one millimeter or more. Moreover, the use of expensive instrumentation, it is advisable to have one device to sequentially feed him samples of leachate from different control points scattered on tens and hundreds of meters from each other, and this device will not provide for the transport of leachate at such distances with the help of vacuum. Moreover, there are significant elevation changes on the route of transportation.

Known automatic sampling system of [2]that contains the filter installed on the line sampling, the pulsator with a level sensor and pneumatic valves, one of which is installed in the turn of sampling, and the other in the line of delivery of the sample, a controlled source of vacuum pressure, is connected to the control inputs of the pneumatic valves and the pulsator and installed in the supply line of compressed air connected through a solenoid valve with a sampling tube, a receiving chamber with solenoid valve at the outlet, drain camera with a level sensor and a software device that inputs connected to level sensors, and outputs, to the control inputs of the electromagnetic valves. The system is also equipped with a level sensor samples in prosoprano capacity, an additional solenoid valve installed at the outlet of the drain chamber, and a valve, the control input of which is connected with the corresponding release of the device, the reception and discharge chamber connected with the line of delivery of the samples, respectively, through the normally closed and normally open valve channels.

This system of selection of the filtrate allows you to try a slurry of any composition and to transport the leachate using compressed air at a considerable distance and height.

The disadvantage is otbw layer of solid particles (cake) from the surface of the filter using compressed air. Under the action of air accelerates the crystallization is dissolved in a slurry of salts on the surface of the filter, is it cementi the situation and the rapid growth of the filter pores.

The task of the invention is to improve the accuracy of measurement of the ion composition of the sample and increase the service life of the filter due to the improvement of the conditions for its regeneration.

The problem is solved in that the system of selection and shipping of samples of the filtrate to ionometry contains the filter immersed in the test environment and is associated with accumulation tank, a source of vacuum pressure, which through pneumotropica connected to the top opening of the storage tank, prosoprano capacity associated with cumulative capacity, the control unit, the first output of which is connected to a source of vacuum pressure. New system is that the storage capacity is divided into the flushing chamber and the chamber sent, and the bottom hole camera leaching is lower hole of the storage tank, and a side opening camera is sending side opening of the storage tank, inside the chamber flush mounted float valve with the possibility of overlapping of the lower and upper holes, the filter is connected through a sampling tube with the bottom hole of the storage tank, side opening a savings emkosti through the transport pipe is connected with prosoprano capacity, which is connected to the measuring input of the analyzer, in the transport tube has a sensor duct, the end of the transport tube check valve, the sensor output duct connected to the input of the control device, the second output of which is connected with the control input of the analyzer.

Improved regeneration of the filter is achieved firstly by the fact that it is produced by reverse flushing the filtrate without access of air. Thus, aggressive and contaminated components are not oxidized and not clog the porous cells of the filter. Secondly, the volume of filtrate for regeneration happening in the flushing chamber, a constant and is chosen on the basis of its adequacy for the qualitative rinsing of the filter at each cycle of sampling and sample delivery. Thirdly, the presence of a flow sensor and a control unit allows indirect control filter status and by modifying the respective temporary installations within range to use the full operating life of the filter.

Continuous regeneration of the filter ensures its high performance and allows for several minutes to select the volume of the filtrate, many times the balance in the selection and delivery. The intervals between the cycles are measured in minutes and the composition of the studied environment during this time changes slightly, so contamination of samples adjacent cycles is negligible. Qualitative regeneration of the filter also reduces the influence of residual impurities in the filter on the composition of the sample. the thus, the the sample enters the analyzer with minimal distortion, which increases the accuracy of the measurement.

The drawing shows a block diagram of the system.

The system contains a filter 1, is immersed in the liquid of the studied environment 2 and directly connected to the sampling tube 3 with a cumulative capacity of 4, the source of vacuum pressure 5, connected pneumotropica 6 with a cumulative capacity of 4. Accumulating tank 4 includes a camera 11 flush to accumulate and return the filtrate to the regeneration of the filter 1 and the camera send 12 for accumulation and dispatch of filtrate for analysis prosoprano capacity 7. Side opening camera 12 send, which is the side opening of the storage tank 4, is connected with prosoprano capacity 7 transport tube 8, in which the sensor is installed duct 9, and the output of the transport tube 8 is located a non-return valve 10. Bottom opening 13 of the chamber 11 of the washing, which is the bottom hole of the storage tank 4, is connected through a sampling tube 3 to the filter 1. The top opening 14 of the storage tank 4 is connected through pneumotropica 6 to a source of vacuum pressure 5. The camera 11 wash contains upper overflow hole 15 for the flow of filtrate into the chamber 12 send. The camera 11 wash also contains distribution, free-floating on the surface of the filtrate two-way valve 16, the overlapping ver is her hole 14 after filling the filtrate of the two cameras 11, 12, and the bottom hole 14 after emptying of the chamber 11 flush when regeneration of the filter. Probationa tank 7 is connected to the measuring input of the analyzer 17. The output of the sensor 9, the duct is connected to the input of the control device 18, the first output of which is connected to the source 5 vacuum pressure, and a second output connected with the control input of the analyzer 17.

The system works as follows.

In the initial position of the floating valve 16 is in the down position. The control unit 18 sends a signal to the source 5, the vacuum pressure, which includes the vacuum. The check valve 10 prevents the system from the suction of atmospheric air. Under the action of the vacuum valve 16 opens the hole 13, begins the selection of the filtrate. The flushing chamber 11 is filled to the overflow holes 15, begins to fill the chamber 12 send, this point is shown in the drawing. The valve 16, rising with the level of filtrate during filling of the chamber 12 washing does not cover the top opening 14. After filling of the chamber 12 to send the overflow holes 15 level of filtrate in the storage capacitor 4 increases slightly to overlap the valve 16 of the upper openings 14. Access to the filtrate in pneumotropica 6 is closed, the selection of the filtrate spontaneously terminated. The control unit 18 outputs a signal on channel 5 vacuum is Alenia, which includes a supply of compressed air pneumotropica 6 the holding tank 4. The valve 16 is released from the top of the hole 14. Starts the eviction of the filtrate from the chamber 12 send in the transport pipe 8 to prosoprano capacity 7 analyzer 17. After emptying of the chamber 11 of the flush valve 16 is pressed against the bottom of the hole 13 and protects the filter 1 from being hit by compressed air. You can start the next cycle of selection and delivery of filtrate.

The duration of the filling of the storage tank 4 is predetermined experimentally and time of submission of vacuum is set slightly larger than the required value. Sensor duct 9 with sufficient accuracy controls the volume of the transported filtrate. If the volume decreases below a preset limit, the control unit 18 automatically increases the supply of vacuum or displays information about the need for filter replacement. I.e. sensor duct 9 allows you to implement automatic diagnostics of the system, increasing its reliability and service life of the filter 1.

In layer cake formed on the filter surface 1 when his poor Stripping, accumulate ions monitored metals, so select the composition of the filtrate controlled environment may change, distorting the representativeness of the sample. The constant regeneration of the surface is t filter 1 reverse flow part of the selected fluid will ensure the representativeness of the sample.

References

1. U.S. patent No. 6076410, "Liquid sample collector and liquid return apparatus," published June 20, 2000.

2. Author's certificate of the Russian Federation No. 1265519, "Automatic sampling system", published on 23 October 1986 (Prototype).

System selection and delivery of samples of the filtrate to ionometry containing the filter immersed in the test environment and is associated with accumulation tank, a source of vacuum pressure, which through pneumotropica connected to the top opening of the storage tank, prosoprano capacity associated with cumulative capacity, the control unit, the first output of which is connected to a source of vacuum pressure, characterized in that the storage capacity is divided into the flushing chamber and the chamber sent, and the bottom hole camera leaching is lower hole of the storage tank, and a side opening camera is sending side opening of the storage tank, inside the chamber flush mounted floating valve with the possibility of overlapping of the lower and upper holes, the filter is connected through a sampling tube with the bottom hole of the storage tank, side opening of the storage tank through the transport pipe is connected with prosoprano capacity, which is connected to the measuring input of the analyzer, in the transport Proc. of the BKE sensor installed duct and non-return valve, the sensor output duct connected to the input of the control device, the second output of which is connected with the control input of the analyzer.



 

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FIELD: automatical aids for sampling liquids.

SUBSTANCE: system for sampling and delivering filtrate has filter submerged into tested medium and connected with collecting tank and vacuum pressure source which is connected with top hole of collecting tank by means of pneumatic pipe. System has sample receiving tank connected with collecting tank and control unit which has first output to be connected with vacuum pressure source. Collecting tank has two separated chambers - washing chamber and dispatching chamber. Lower hole of washing chamber has to be lower hole of collecting tank and side hole of dispatching chamber has to be side hole of collecting tank. Floating valve is installed inside washing chamber to shut off lower and top holes. Filter is connected with lower hole of collecting tank through sampling pipe. Side hole of collecting tank is connected with lower hole of tank for receiving samples through sampling pipe. Flow-type sensor and check valve are installed inside transportation pipe. Output of flow-type sensor is connected with input of control unit; second output of control unit is connected with control input of analyzer.

EFFECT: improved precision of measurement of sample ion composition; prolonged service life of filter.

1 cl, 1 dwg

FIELD: hydrology; hydrobiology.

SUBSTANCE: device for simultaneous sampling of water samples taken from layers of water laying close to each other, has set of cylinders with pistons disposed onto carrying frame. End parts of all cylinders are hermetically tied with multiplier, which is connected with pump by means of hose pipe. Front edges of all cylinders are provided with beaks having entrance holes for taking water samples. Pistons moves inside cylinders due to hydraulic tie-rod. Space inside hose-pipe, multiplier and end parts of all cylinders is filled with water to avoid corrosion.

EFFECT: improved reliability of efficiency of operation; better protection corrosion.

FIELD: investigating or analyzing materials.

SUBSTANCE: device has cylindrical housing, heater, clamp, pump for pumping water to be investigated, and valve for insulation of the sample from ambient water. The device is provided with a unit which has an assembly of cells with microbiological filters connected in parallel. The diameters of the cells are different. The device has additional heater mounted in the top part of the housing and additional valve. The cell assembly is interposed between the valves.

EFFECT: enhanced reliability of sampling.

1 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: device has cylindrical housing, heater, clamp, pump for pumping water to be investigated, and valve for insulation of the sample from ambient water. The device is provided with a unit which has an assembly of cells with microbiological filters connected in parallel. The diameters of the cells are different. The device has additional heater mounted in the top part of the housing and additional valve. The cell assembly is interposed between the valves.

EFFECT: enhanced reliability of sampling.

1 dwg

FIELD: investigating or analyzing materials.

SUBSTANCE: sampling device has sampler, changeable batching member which is made separately from the sampler, housing, and wind-protection device. The wind-protection device is made of porous diaphragm mounted in the base of the housing and overlaps it. The sampler is mounted to provide the distance between the inlet port of the sampler and diaphragm to be 0.1D<L<0.3D, where D is the diameter of diaphragm and L is the distance between the inlet port of the sampler and diaphragm.

EFFECT: improved design.

3 cl, 1 dwg

FIELD: test technology.

SUBSTANCE: sample for testing porous materials by means of shock compression is made in form of a disc with flat parallel bases and cone side surface. Diameters of bases of disc relate as (7-8):1. Thickness of sample equals to (0,15-0,2) diameter of larger base.

EFFECT: reduced number of tests; improved precision.

2 dwg

FIELD: meteorology.

SUBSTANCE: device has sampling cylinder provided with cutting ring with teeth, piston with pusher, cutting members secured to the inner side of the ring, and cover with central threaded opening for the pusher made of a screw. The cover and pusher are provided with handles.

EFFECT: enhanced convenience of sampling snow.

4 cl, 5 dwg

FIELD: analyzing and/or investigating of materials.

SUBSTANCE: method comprises setting the sampling member and means for measuring the flow parameters into the pipeline, pumping a part of the flow through the sampling member, and determining the parameters of the flow.

EFFECT: enhanced reliability of sampling.

1 dwg, 1 tbl

FIELD: investigating or analyzing materials.

SUBSTANCE: method comprises setting the sampling member into the pipeline, separating the branch with inhomogeneous distribution of inclusions upstream of the sampling, directing the branch to the mixer for the intensive homogenizing, combining the flow branches, and sampling the combined flow. The device has sampling member, by-pass pipeline for branching the flow, and mixer. The mixer is mounted on the horizontal section of the pipeline between the inlet of the by-pass pipeline and its outlet for homogenizing the flow branch, which does not flow through the by-pass pipeline.

EFFECT: enhanced reliability of sampling.

2 cl, 4 dwg, 1 tbl

FIELD: oil industry.

SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.

EFFECT: simplified construction and maintenance, higher quality.

4 dwg

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