JPH0143626Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an apparatus for collecting a required amount of sample from powdered material such as iron ore transported by gas such as air.

Conventionally, as this type of device, for example, Utility Model 53-
The one disclosed in Publication No. 45434 is known. However, in order to take out the collected sample by bringing the outflow port of the hollow shaft into contact with the seal point, the hollow shaft is moved in the diametrical direction of the transport pipe, and the high pressure flowing inside the transport pipe is forced into contact with the inlet port facing the pipe. This method is carried out by introducing a flow of air into the transport pipe, and if the transport medium in the transport pipe is a negative pressure gas flow rather than a high-pressure air flow, sampling cannot be performed. Since it is not performed by reciprocating in the diametrical direction, it has drawbacks such as the inability to collect uniform samples.

This device eliminates the drawbacks of the conventional methods mentioned above, and allows samples to be collected not only when there is a high-pressure gas flow in the transport pipe, but also when there is a negative-pressure gas flow, and it is also possible to collect samples without bias. The purpose is to provide a device that is easy to use.

In order to achieve the above object, this invention provides a sampling pipe that is reciprocated in the diametrical direction of the transport pipe by an operating member installed outside the transport pipe in the middle of the transport pipe that transports powder and granular materials as a gas. An opening for sampling a sample is formed at one end of the pipe facing the transport pipe, and one end of a connecting pipe is connected to the other end so that the other end of the sampling pipe is movably inserted into the connecting pipe. A separation chamber installed outside the transport pipe is connected to the other end of this connection pipe, and an exhaust pipe equipped with a blower is connected to the top of this separation chamber, and the gas in the separation chamber is removed to the atmosphere by this exhaust pipe. It is characterized by being made to emit at

This invention will be explained with reference to embodiments shown in the drawings.

Fig. 1 is an overall front view of the embodiment, Fig. 2 is an enlarged cross-sectional view of the main parts, and Fig. 3 is a cross-sectional view taken along the line shown in Fig. 2. 2 is a bag filter fixed to the support member 3; 4 and 5 are a large diameter connecting pipe and a small diameter connecting pipe that connect the vertical part 1' of the transport pipe 1 and the bag filter 2; the large diameter pipe 4 is a small diameter connecting pipe; It is fixed via the tube 5, the guide piece 6, and the boss piece 7, and is also fixed via the vertical part 1', the guide piece 8, the boss piece 9, and the rib 10.

A sampling pipe 13 is movably inserted into the large and small diameter pipes 4 and 5 via boss pieces 7 and 9. An opening 14 is formed at the tip of the sampling pipe 13 in a direction opposite to the flow direction of the gas flowing in the vertical portion 1'. A vertical guide piece 15 is fixed to the pipe 13 inside the large diameter pipe 4 so as to protrude into long grooves 16a and 16b formed on the upper and lower walls of the large diameter pipe 4. A guide roller 18 that can run on a rail 17 provided on the upper wall of the large-diameter pipe 4 is attached to the upper end of the guide piece 15, and an actuating roller 18 that can run on a horizontal support plate 19 fixed to the vertical portion 1 is attached to the lower end. The rod 21 of the cylinder 20 is attached.
Note that 22 is a hood that covers the running portion of the roller 18, and 23 is a sealing rubber.

A sample storage can 27 is attached to the lower end of the cone portion of the filter 2, and an exhaust pipe 31 equipped with a blower 30 is connected to the upper part of the filter 2. 32 is an air volume adjustment valve.

Reference numeral 34 indicated by hatching in FIG. This is designed to prevent dew condensation from forming within the filter 2.

Next, the operation of the above embodiment will be explained.

After operating the blower 30, the operating cylinder 2
0, the sampling pipe 13 moves through the guide piece 15 within a certain period of time from the standby position shown by the solid line in FIG. After moving forward to near the pipe wall in the direction, it moves back again and returns to the original standby position, and during this reciprocating movement, the gas containing powder and granules flowing inside the transport pipe 1 flows from the opening 14 to the vertical part 1'. This results in uniform suction across the entire width in the diametrical direction.

Then, the sucked gas is guided to the bag filter 2 through the small diameter pipe 5, where the powder and granules in the gas are separated by gravity and collected in the sample storage can 27.
On the other hand, the gas from which the powder and granules have been separated is discharged from the blower 30 to the atmosphere through the exhaust pipe 31.

During the gas suction, the suction air volume is adjusted in advance by the regulating valve 32 and the opening 1 of the sampling pipe 13 is adjusted in advance.
By making the suction air velocity from 4 and the flow velocity of the gas in the transport pipe 1 almost the same and performing uniform suction, it is possible to evenly suction coarse particles and fine particles in the powder and granules in the gas. It is possible.

In the above embodiment, the transport pipe 1 was used for negative pressure transport, but it is not limited to this, and it may be used for high pressure transport, and the sampling pipe 13 was provided in the vertical part 1' of the transport pipe 1. In addition, it may be provided on a horizontal portion or an inclined portion. It goes without saying that the bag filter 2 may be replaced with another separation chamber such as a cyclone.

Since this device is configured as described above, the gas containing the powder or granules in the transport pipe can be sucked by the operation of the blower, and therefore the powder or granule transport medium flowing in the transport pipe is a gas flow with negative pressure. In addition, the sampling pipe, which is installed so that the sample can be reciprocated in the diametrical direction of the transport pipe by means of an actuating member, can be easily and quickly collected without bias, and the sample can be collected easily and quickly. Effective for analysis and measurement. Furthermore, when not sampling, the sampling pipe is pulled in from the transport pipe so that the other end is inserted into the connecting pipe, thereby making it possible to smooth the flow without interfering with the flow within the transport pipe. Furthermore, since the separation chamber is installed outside the transport pipe, there is an excellent effect that it is easy to take out the sample after collection.

[Brief explanation of drawings]

Figure 1 is an overall front view of an embodiment of this invention;
The figure is an enlarged cross-sectional view of the main part, and FIG. 3 is a cross-sectional view taken along the line of FIG. 2. DESCRIPTION OF SYMBOLS 1... Transport pipe, 1'... Vertical part, 2... Bag filter, 4... Large diameter connecting pipe, 5... Small diameter connecting pipe, 13... Sampling pipe, 14... Opening, 20... Operating cylinder, 27...Sample storage can, 30...Blower, 31...Exhaust pipe.

Claims (1)

[Scope of utility model registration request] A sampling pipe is installed in the middle of the transport pipe that transports powder and granular materials in the diametrical direction of the transport pipe by an operating member installed outside the transport pipe, and a sample is collected at one end of the sampling pipe facing the transport pipe. At the same time, one end of the connecting pipe is connected to the other end of the sampling pipe so that the other end of the sampling pipe is movably inserted into the connecting pipe, and a transport pipe is connected to the other end of the connecting pipe. A separation chamber installed outside is connected to the separation chamber, and an exhaust pipe equipped with a blower is connected to the upper part of the separation chamber, and the gas inside the separation chamber is discharged to the atmosphere through the exhaust pipe. Powder sample sampling device for gas transportation.