SU851161A1 - Liquid sampling device - Google Patents

Description

 The invention relates to a technique for studying the chemical and physical properties of substances, and specifically to devices for sampling liquids, and is intended primarily for use in sampling wastewater from pressure pipelines and can also be used in sampling from open drainage systems in wastewater quality control systems. waters discharged into water bodies. . A fluid sampler is known to be activated by the gravity of the fluid being withdrawn, consisting of a horizontally located rotator on a vertical hollow wheel shaft. In this device, the wheel is rotated by dropping liquid on obliquely positioned spokes, one of the spokes serves as a scoop, and when the sample gets into it, the liquid is drained into the hollow shaft and then into the sampling reservoir 13. This device does not provide a clear proportionality of the sample, but contains the average for the entire period of selection. A device known as dp for sampling liquids from pressure pipelines is known, which contains a rotary table connected with a fixed rotary table. test receivers on it, a device for filling them, mounted above the turntable and a control unit f2. A disadvantage of this device is that if it is necessary to fill one vessel for a long time, for example 1 hour, a large-capacity sample receiver is required, or it is necessary to have an automatic device regulating the outflow of a liquid that can reduce the flow of the test liquid to such an extent that all liquid served over a long period of time, can be placed in a container of reasonable size. In addition, in this device the removal and emptying of the cell is performed manually, which entails the constant presence of the operator and, consequently, increases the cost of operating the device. The purpose of the invention is to increase the representativeness of the gobo and automate the process. This goal is achieved by the fact that the device is equipped with a fixed position and is located on it. The ring guides, made with a break, a funnel, located between the sampling receivers and the device for filling them and the drain tray, the sampling receiver on a 1} Ω table is fixed hingely, the hinge axis is located below the center of gravity of the filled sample receptacle, and is provided with a load and fork mounted below the hinge axis with the ring guide, and the fixture for The fillings of the sampling receivers are made in the form of a measuring flow vessel connected to the pressure pipe with inlet and outlet pipes equipped with valves, and a drain pipe equipped with a valve, the valves and funnel being connected to the control unit.

The sample receivers on the turntable are mounted in two rows on ring guides, the output ends of which at the point of rupture are curved,

The turntable is equipped with a drive rim with pins, a limit switch mounted on a support and connected to the control unit, and a rubberized roller mounted on the drive shaft.

The number of sample receivers is chosen from the condition of the sampling frequency and theirs, and the volume of each of the sample receivers is set equal to or greater than the sufficiency of the sample for subsequent analysis, which ensures the necessary and sufficient sampling to assess the controlled sample, the optimum mode of sampling. The internal volume of the measuring vessel is set equal to not more than the volume of the test sample in order to improve the operating conditions, t, e. to ensure the adequacy of the sample and exclude the transfusion of excess sample when filling the sample receivers.

at the annular guideline at the point of rupture, the output end is made with a bend in the direction opposite to the tilting of the sample receiver, which ensures the directional tilting of the sample receiver in the right direction.

Fig, 1 shows the device, a general view; in fig. 2 - turntable, top view.

A device for batch sampling of a liquid, mainly wastewater from pressure pipelines, contains a turntable 1 with test tubes 2 attached to it in two rows along the circumference; a device for filling sample receivers, made in the form of a flow meter and a closed vessel 3 at the top and bottom control pipes of which are installed control valves 4 and 5

connected to the section of the discharge pipe 6, in which the diaphragm 7 is installed, while the valve 4 is connected to the pressure pipe 6 to the diaphragm 7, and the valve 5 is respectively connected after the diaphragm 7. In the lower part, the measuring vessel 3 is equipped with a discharge pipe with a solenoid valve 8, A funnel 9 with an electromagnetic actuator 10 is located under the drain nozzle. The drain neck of the funnel 9 is located above the test-chairs 2. The turntable 1 is mounted on a fixed support 11. It can be rotated around a vertical support. and. On the turntable 1, the drive rim 12 is rigidly fixed, to which the drive roller 13 of the drive 14 is pressed. On the drive rim 12, pins 15 are attached, which cooperate with the head of the limit switch 16 electrically connected to the control unit 17. The pins 15 are evenly positioned around the circumference of the drive rim 12, and their number is equal to the number of sample receivers 2. The volume of sample receivers 2 and their number are selected from the condition of sufficient sample for analysis and the necessary frequency (periodicity) of selection, the bottom 18 secures the load 18 and the fork 19, which its slot enters the annular guide 20, which has a gap in the place of tilting of the test receivers. Each row of sample receivers 2 has its own annular guide 20. Under the sample receiver 2, a drain tray 21 is installed at its tilting point. Turntable actuator 14 is connected to control unit 17, Test receiver 2 on hinged table 1 is hinged, the hinge axis is located below the center The tin of the filled test receiver 2. Measuring vessel 3 and funnel 9 are installed above the turntable 1 at the place of filling of the sample receivers 2, 9 are installed between the drain nipple of the measuring vessel 3 and the turntable 1 with the possibility of turning From the set points, in which the outlet of the funnel 9 is located above the set points in the filling area of the receiver 2.

In the circumferential direction of the gadim 20 in place / break, the output ends are made about bending, and the bends are performed in the direction opposite to the overturning of the sample receivers 2. since the latter are installed on the turntable i in two rows, the bends are made in different directions so that opposite sides.

The device works as follows.

Claims (2)

When the electromagnetic valves 4 and 5 are open, there is a constant flow of liquid through the measuring vessel 3. At the same time, the solenoid valve 8 of the drain pipe is closed. The fluid flow is provided by the pressure difference in the pressure pipe 6 before and after the diaphragm 7. At the command of the control unit 17, the controlled valves 4 and 5 are closed and part of the flow is cut off in the measuring vessel 3. At the same time, the command to turn on the actuator 14 is sent, which, rotating the swivel table 1, brings the next sampler 2 under the fill. Due to the installation of the on / off switch 16 and the pins 15, the stop occurs exactly under the flange 9, and the electromagnetic actuator 10 of the funnel 9 deflects it to the desired position, ensuring the direction of the jet to the receiver 2 of the outer or inner row. At the time of shutdown, the drainage valve is opened. The plug valve 8 and the cut off sample from the measuring vessel 3 are drained through the plug 9 into the sample receiver 2. After the measuring vessel 3 is emptied, the control valve 17 is closed by the control unit 17 and the electromagnetic valves 4 and 5 open, ensuring the through-flow of the liquid through the measuring vessel 3, in which case the washing of the measuring vessel 3 takes place. The filled sampling receiver 2 makes a complete revolution in a set time (for example, in 1 day at empty intervals (for example, in 1 hour). The sample receptacle is prevented from tilting by the fork 19, which slides along the guide 20. At the end of the storage cycle, the unclaimed sample is automatically drained into the drain tray 21. This happens as follows: When the drive 14 is next turned on, the test receiver 2, which makes a full turn on the turntable 1, driving along the annular guide 20 comes to break, when the fork 19 comes out of the engagement. Since the swing axis is below the center of gravity of the filled sampler 2, it instantly tilts and robe drained into the drain tray 21 and then into the sewer. The tipping direction ensures the bending of the end of the direction of the tips. After emptying, the sample receiver 2 returns to the vertical position under the action of the load 18, and upon further movement along the circumference, the slot of the plug 19 again engages with the ring guide 20, and the test receiver 2 fits again. Tilting and returning it to the vertical position occurs during its movement from the next switching on to stopping. If it is necessary to select stored samples for an English sampling receiver 2, they are manually removed from the turntable 1 and merged into a special container. Each sample has a fixed sampling time. The device drive 14 is turned on and off automatically over a predetermined time cycle. The frequency of selection can be adjusted widely. The proposed device provides a representative pro. t, at the same time, simplifying operation, since unclaimed samples are automatically drained, freeing the sample receivers to receive the next portions, and allows you to have samples taken at specified intervals and a common shelf life. Claim 1, A device for sampling hpoO liquid from pressure pipelines, containing a rotary column connected to a drive, fixed on it with test receivers, a device for filling them, mounted above a rotary table, and a control unit, which means In order to increase the representativeness of the sample and to automate the process, the device is equipped with a fixed support and annular guides arranged on it, made with a section, a funnel located between the sample receivers and adapted For filling them and a drain tray, each sample receiver on the turntable is pivotally fixed, with the hinge axis located below the center of gravity of the filled sample receiver, and equipped with a weight and fork mounted with the ring guide, and the filling of the sample receivers is made in the form of a measuring flow vessel connected to the pressure pipe with an inlet and outlet nozzle provided with valves, and a drain nozzle equipped with a valve, and this valve, the valve and funnel soedinekm to the control unit. / 2, The device according to Claim 1, in which they are, “tTb test receivers” on the turntable are set in two rows on circular directions, the output ends of which are curved at the point of rupture. 3, The device according to PP, 1 and 2, is about the fact that the rotary table is equipped with a drive rim with pins, a limit switch mounted on a support and connected to the control unit, to a rubberized roller that is mounted on the drive shaft. Sources of information taken more attention in the examination 1, USSR Author's Certificate No. 37392, cl. G 01 H 1/10, 1932. 2. The patent of France No. 2206849, cl. G 01 N 1/10, 1973.