JPS5961749A - Apparatus for detecting precipitation layer in slurry fluid flowing and distributing pipe - Google Patents

Abstract

PURPOSE:To make a slurry concn. manually or automatically adjustable to make transport efficient, by providing a small propeller driven at a low speed attached to the bottom part in an arranged pipe and an apparatus for detecting torque to detect the slurry precipitation layer in the arranged pipe. CONSTITUTION:A place where slurry particles are easily accumulated is selected on the way of an arranged pipe 2 for transporting a slurry and a detecting apparatus consisting of a small propeller 8 rotated at a low speed by a small electromotor 5 and a detector 4 is provided thereto. In this mechanism, when the particle concn. of the slurry on the bottom part in the arranged pipe becomes high and particles begin to accumulate, the rotation of the propeller 8 becomes heavy and rotary torque is increased while the rotary number is also reduced. These changes are detected by the detector 4 to be transmitted to the alarm apparatus 6 in a control chamber. By this method, the slurry concn. is adjusted manually or automatically and slurried mineral resources can be efficiently transported.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is installed in a piping conveyance device for a slurry fluid containing settleable particles to increase the flow rate for one hour for sedimentation and deposition of particles.
This is a device to prevent the - from dropping and clogging.

Crushing ore or coal into a fine powder and adding water or heavy oil to it to create a slurry is commonly used to transport liquids, which reduces transportation costs and streamlines transportation costs.However, in order to increase transportation efficiency, If the concentration is increased, particles will accumulate and the effective cross-sectional area of the piping will decrease, leading to the risk of poor flow or blockage of the piping, but until now there has been no effective means to predict and prevent this.

This invention corrects the accumulation of such particles in piping.
The purpose of this is to issue a V-alarm to the control room so that the system can detect this and take countermeasures either manually or automatically.

Embodiments of the present invention will be specifically described below with reference to the drawings.

The figure shows a cross section of the slurry transfer piping where the detection device is installed, and the figure shows a cross section of the pipe where the detection device is installed.

As shown in the figure, a location where slurry particles are likely to accumulate is selected in the middle of the pipe (2) that flows the slurry, and detected as a small propeller (8) rotating at low speed using a small propeller (5). A detection device consisting of a device (a) is installed.

As shown in Figure 2, a small detection propeller (8) is placed at the bottom of the tube. Since the small propeller (8) is for detecting stirring resistance force, the shape may be any simple shape. The detector (4) detects the rotational speed and current value in order to detect the rotational torque of the propeller (8).

When the slurry particle concentration at the bottom of the pipe starts to accumulate, the rotation of the propeller (8) becomes difficult, the rotational torque increases, and the rotational speed decreases. This is detected by the detector (4) and transmitted to the alarm device CG in the control room.

By providing this device in this way, it is possible to predict a reduction in flow and blockage of pipes due to the accumulation of slurry particles, and to take measures to prevent them. Furthermore, by quantitatively detecting this propeller rotation torque and adjusting the slurry concentration manually or automatically, it becomes possible to efficiently transport the mineral resources made into a slurry.

[Brief explanation of drawings]

Fang/The figure is a schematic diagram of the slurry transfer piping equipped with a detection device.
The figure is a cutaway view of the piping at the location where the detection device is installed. (1)...Slurry storage pipe, (2)...Piping,
(3)...transfer pump, (4)...detector, (5)
...small 'JJj motive. (6)...Alarm device, (force...sedimentary layer (sedimentation layer),
(8)...Small propeller.

Claims (1)

[Claims] A slurry fluid comprising: a small propeller driven at low speed attached to the bottom of a pipe that flows the slurry fluid; a device for detecting torque; and a device for detecting a slurry sedimentation layer within the pipe. Sedimentation layer detection device in flow piping.