RU41518U1 - VACUUM Sampler - Google Patents

Abstract

A sampler comprising a vertically arranged housing with an internal space for sampling from the process pulp stream, equipped with a sampling tube, placed in the pulp stream, a drain valve, an ejector, through a membrane of a water flushing valve, connected in series with a compressed air line equipped with a control valve for shutting off compressed air , which is connected to the control device, an ejector tube located inside the sampler body, the main line is connected to the sampler body For flushing the sampler through a water flushing valve, characterized in that the casing of the sampler is located on top and partially inside the drain funnel having a drain nozzle, a floating hinged flap located on the lower cut of the ejector tube to overlap the ejector tube is added, it works at a certain pulp level in the sampler, the control device works cyclically according to the time schedule, the compressed air line is connected to the ejector through a water flush valve, which shuts off the water supply to the sampler, when the control device sends a command signal to the compressed air valve to create a vacuum.

Description

The vacuum sampler is intended for sampling pulp from tanks, sumps, pockets of flotation machines, from technological trays in places of active mixing of pulp flows. It relates to the preparation and preparation of samples for research, to the sampling technique necessary for the selection and delivery of liquid pulp samples to devices for determining the analytical composition of technological products and are widely applicable in ferrous and non-ferrous metallurgy, in the processing of chemical industry, water treatment, and sewage treatment.

Known vacuum sampler PRO-3, containing a vertically mounted sampler body with a sampling tube and a drain valve, a jet pump connected to a compressed air line and equipped with a control valve, a command device, and a suction tube connecting the jet pump with a sampling tank, a compressed ejector the air has an ejector tube of a certain length, with the possibility of vertical movement, placed inside the sampler body, a vacuum relay, the jet pump is equipped with a throttle disposed between the air supply line and the control valve overlap compressed air line. [L.1, 2, 3]. At the command of the control, the ejector creates a vacuum inside the sampler body and through the sampler into the inside of the sampler body pulp begins to flow. When filling out

the pulp of the internal volume of the sampler comes the moment when the pulp level reaches the lower level of the ejector tube of a certain length. In this case, the vacuum drops sharply, as a result of which the vacuum relay is triggered, which sends a signal to the command device and the valve turns off the compressed air through the ejector. The vacuum disappears. Under the action of gravity of a certain mass of pulp accumulated in the lower part of the sampler body, it is gravity-fed to a storage tank.

By changing the length of the ejector tube, using the ability to move it vertically, the volume of the accumulated sample changes.

Further, the cycle is repeated repeatedly under the control of a command control device.

A BOP-3 sample sending device is also known, which is designed to accumulate a pulp sample and transfer it along the line by means of compressed air. [L.2, 3].

The device comprises a housing for a sample sending unit, a funnel, a drain pipe, shutoff valves for air, water, pulp, and nipple highways for connection.

Before the pulp sample is fed through the nipple, the internal cavity of the sample sending unit is filled with process water to the discharge level. Pulp comes from the sampler through a nipple to the sending unit, excess water is discharged through the drain pipe. Compressed air is supplied through another nipple. Valves block the pulp and process water supply lines to the sample sending unit. Under pressure of compressed air, a pulp sample is squeezed out of the BOP-3 unit into the transport line.

A pulp sampler is also known [L.4, 6]. A sampler consists of a sampler tank connected to a vacuum pump by a main pipe with a safety valve at the outlet of this pipe. Using the suction pipe, the interior of the sampler tank is connected to the sampling point from the process stream. In the lower part of the sampler tank, an exhaust valve is installed on the exhaust pipe, which serves to release the selected sample. For the sampling process, a three-way plug valve opens on the vacuum line. In this case, the liquid pulp from the process stream is sucked into the sampler, and the exhaust valve is pressed under the influence of atmospheric pressure and closes the outlet for the flow of water, the pulp.

When the three-way valve is rotated 90 °, the capacity of the sampler is connected to the surrounding atmosphere, while the vacuum inside the sampler drops and, under the influence of gravity of the pulp itself, the exhaust valve opens.

Also known is a vacuum sampler containing a sampling container equipped with a sampling tube and a drain valve, a level indicator, a flushing unit and a jet pump connected to a compressed air line and equipped with a control valve and a suction tube installed with the possibility of vertical movement and fixation, a flushing unit made in the form of a nozzle installed in the upper part of the tank, while the nozzle is equipped with a distributor connected to the washing water supply line, suction pipe BCA is obliquely cut, and the capacity for sampling and the suction tube are electrodes level switch. Valve distributor

pneumatic diaphragm actuator connected to the compressed air line using an additional control valve [L. 6].

Known devices for sampling and sending samples each have their own enclosures, which causes excessive metal consumption, require volume for installation [L.1, 2, 3, 4].

The prototype is the device [L.6]. The objective of this utility model is to combine these two devices in one more compact and, therefore, reducing the consumption of metal with volume, has greater reliability.

A sampler with sending samples works according to a similar principle: they supply compressed air through an ejector, a pulp sample is taken under the action of the vacuum created by the ejector, the vacuum is closed, after which the sample is removed by gravity to the storage line. The sampler operates in a cyclic mode on a time schedule under the action of a control device.

A cyclic washing of the internal volumes of the sampler has been implemented to ensure the reliability of the sample and eliminate pollution.

The proposed device design is shown in Fig. 1.

1 - sampler housing with an internal sample container,

2 - valve controlling compressed air,

3 - drain fitting funnel

4 - sampling tube,

5 - flushing valve with water,

6 - water highway,

7 - line of compressed air,

8 - air ejector,

9 - tube ejector of a certain length,

10 - movable floating hinged flap,

11 - drain valve

12 - control device

13 - drain funnel.

The control device 12 operates on a time schedule:

1) the compressed air supply is turned on - the ejector is working, a vacuum is created inside the sampler body, the pulp is sucked in, the water supply is turned off; 2) the compressed air supply is turned off, there is no air supply to the ejector, the valve for supplying water to the sampler is turned on for washing the sampler and transporting the selected sample,

The operation of sampler 1 for sampling and transmission to the line for delivery to the analytical device is as follows: cyclically according to the time schedule, compressed air from line 7 enters the ejector 8 and creates a vacuum in the sampler 1. The pulp through the sampling tube 4 enters the internal container the case of the sampler 1 due to the vacuum that is created inside the sampler when the air ejector 8 is operating from the compressed air line 7 through the control valve 2 and the ejector tube 9. Shut-off valve th valve 11 is pressed against the probe body under the action of air in the presence of vacuum. When the pulp level rises inside the body of the sampler 1 to a certain level, the movable floating hinged shutter 10 begins to float. With a further rise in the level, the shutter 10 is pressed to the lower section of the tube 9, overlaps the lower section of the ejector tube, avoiding the atomization mode, while the vacuum drops sharply. Drain valve 11 does not press

atmospheric pressure. When filling the inner tank 1 with a certain volume of liquid sample under the action of gravity of the pulp itself, it is discharged into the inside of the funnel 13 and through the nozzle 3 and flows into the line to the pulp composition analyzer.

Sampler 1 cyclically works from control device 12. At a certain point in time, the internal cavities of the sampler are flushed with water from line 6 through a control valve 5, which passes water from line 6 only during a time period when there is no supply of compressed air 7 to ejector 8.

The proposed utility model of the sampler has an inventive step, so the new design of the whole device is used. The use of two functions is ensured: sampling, washing containers, in which sampling and accumulation of pulp samples take place, less weight of the structure, reliable operation is ensured.

The proposed vacuum sampler can be widely used for sampling liquid and pulp-like samples in the ferrous and non-ferrous metallurgy, in the chemical industry, in water and wastewater treatment devices.

LITERATURE

1. Sampler, A.S. USSR No. 892261, G 01 No. 1/10, BI No. 47-1981

2. Block for sending samples BOP-3, Sampler vacuum PRO-3. Nomenclature list of products manufactured by OP ONTK Soyuz TsMA, MTsM, Moscow, 1989, pp. 35-36, 38-39.

3. Devices, systems and automation equipment for metallurgy. Catalog, ONTK Soyuz TsMA, 1991, p. 122, 123, 126, 127.

4. Means of mechanization in metallurgy. Reference, vol. 2. p. 344. Sampler, Moscow, Metallurgy Publishing House, 1989

5. The system of analytical control of liquid samples. RF patent No. 2173452 BI No. 25 of 09/10/01

6. A.S. USSR No. 1723489, Vacuum sampler, G 01 No. 1/10, BI 12-92

Claims (1)

A sampler comprising a vertically arranged housing with an internal space for sampling from the process pulp stream, equipped with a sampling tube, placed in the pulp stream, a drain valve, an ejector, through a membrane of a water flushing valve, connected in series with a compressed air line equipped with a control valve for shutting off compressed air , which is connected to the control device, an ejector tube located inside the sampler body, the main line is connected to the sampler body For flushing the sampler through a water flushing valve, characterized in that the casing of the sampler is located on top and partially inside the drain funnel having a drain nozzle, a floating hinged flap located on the lower cut of the ejector tube to overlap the ejector tube is added, it works at a certain pulp level in the sampler, the control device works cyclically according to the time schedule, the compressed air line is connected to the ejector through a water flush valve, which shuts off the water supply to the sampler, when the control device sends a command signal to the compressed air valve to create a vacuum.