JPS5915685B2 - liquid concentrator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for separating a liquid at an arrival point in a cargo handling system in which powder and granules are mixed in a carrier liquid and transported.

There are two types of such concentrating devices: one that completely separates the powder from the liquid, and one that separates only a portion of the liquid. Concerning the concentrator to which it belongs.

Conventionally, bag filters, Shirafuna, centrifugal separators, etc. have been proposed as concentrating devices for this purpose, and each of these has its own characteristics, and they are used by selecting them as appropriate depending on the conditions of use. However, these devices generally have rotating or sliding parts, which tend to wear out due to contact with powder and granules, and the devices are expensive and large.

The purpose of the present invention is to provide a liquid concentrating device that eliminates the drawbacks of the conventional example. It consists of a tapered tube body having a tapered shape and an outer shell body that covers the main part of the tube body, and a plurality of small holes are bored in the main part of the tube body, and the tube body and the outer shell body form a plurality of small holes. A net-like body surrounding the outer periphery of the small hole group at a distance from the tube is provided in the space formed by the tube, and the particle size is increased from the tube toward the net-like body in the space formed by the net and the tube. The device is characterized in that it is filled with powder and granules so as to reduce the amount of powder and granules, and that the outer shell is provided with a separated liquid outflow pipe, and a mixture of powder and liquid is contained in the tube of this concentrator. The pressure difference between the pressure at this time and the outside of the wire mesh allows only the liquid component to be removed from the mixture.
The purpose is to separate the liquid from the mixture by leaking the powder and granules to the outside through a wire mesh.

Therefore, although the device of the present invention has circuit parts and sliding parts, there is almost no need to repair the device Q1, and since delitting is carried out continuously, it has a large dehydrating capacity despite its small size. It has excellent functions and effects, such as being able to have.

Next, the present invention will be explained in detail with reference to the drawings.

Figure 1 shows one of the cargo handling systems using the separation device of the present invention.
As an example, in FIG. 1, reference numeral 1 denotes a granular material to be transported, which is mixed with a transport medium liquid (carrier liquid) 2 by an agitator 4 in a mixing tank 3.

This mixture is then pressurized by a pump 5 and pumped through a pipe 6 to a destination.

A tank 15 is provided at the destination to receive the mixture, but a separation device 1 (details will be described later) is provided immediately before the tank 15 to receive the mixture. A portion of the liquid is then separated.

The separated liquid is sent to a tank 11 through a separated liquid outflow pipe 8, a valve 9, and a pipe 10.

On the other hand, the mixture concentrated in the separator 7 is transferred to the pipe 12 and the valve 1.
3. Passed through pipe 14 to tank 15.

16 is a stirrer provided in the tank 15. Next, the above-mentioned separation device 7 of the present invention will be explained in detail with reference to FIGS. 2 and 3.

In FIGS. 2 and 3, 1T is a main tube, and a large number of small holes 18 are bored in the tube wall of the main portion covered by an outer shell 22.

Reference numeral 19 is a wire mesh surrounding the outer periphery with a space, and the space between the tube 17 and the wire mesh 19 is filled with powder 20.

The size of this powder must be selected appropriately depending on the purpose of deliquification, etc., but in general, the closer to the pipe 17 the larger the diameter of the powder, and the closer to the wire mesh 19 the smaller the diameter of the powder. The diameter of the small holes 18 and the mesh of the wire gauze 19 should be selected appropriately depending on the purpose of liquid removal.

The upstream side (left side in the drawing) of the tube body 17 communicates with the tube 6 (see FIG. 1), the downstream side communicates with the tube 12, and the outer shell 22 communicates with the tube 8, so that a mixture of powder and liquid is communicated. shall flow from left to right (in the direction of the arrow) in the figure.

Next, the action and effect will be explained.

According to the concentrating device of the present invention, the particle size decreases from the tube body 17 toward the net-like body 19 (since the powder 20 is filled, the mixture of powder and liquid is When the particles flow through the tube body 1γ, the small holes formed in the tube body 17 are clogged by the powder particles with small particle diameters in the mixture of powder and liquid flowing through the tube body 1γ. The liquid is well removed from the mixture, the mixture is easily concentrated, and a stable concentrated state can be maintained for a long period of time.

If, on the other hand, the particles are packed so that the diameter increases from the tube to the net-like body, the resistance will increase when removing liquid from the mixture, making it difficult to remove liquid and concentrate.

Furthermore, in the present invention, since the tubular body 17 is tapered, the mixture of powder and liquid flowing through the tubular body 17 is resisted.
In addition, deliquing is further promoted, and the rate of delitting can be easily controlled by adjusting the feeding pressure of the mixture of powder and liquid.

If the above-mentioned filling of the powder or granular material is opposite to that of the present invention, a higher mixture feeding pressure is required in order to promote deliquification.

Now, the pressure inside the pipe body 17 is set to Pl, and the chamber 21 outside the wire mesh 19
(i.e., the pressure inside the separated liquid outflow pipe 8) is P2, the pressure difference between the two (pt-P2) causes the pipe body 1 to
The liquid component of the mixture in 7 passes through the small holes 18, the powder and granules 20, and the wire mesh 19, and flows out from the chamber 21 to the separated liquid outflow pipe 8, and the liquid is removed from the mixture.

Generally, the pressure P2 is close to atmospheric pressure, and the pressure P2 is close to atmospheric pressure.
If 1 is increased, (Pl-P2) becomes a dog, and the dehydration speed increases.

In order to increase Pl, the valve 13 can be throttled down, or the inlet of the tube 17 can be shaped to have a larger diameter than the outlet 12, that is, the tube 1
7 may be made into a tapered shape, and if the dehydration speed is to be reduced, the valve 9 may be throttled to set the pressure P2 to a constant value.

As described above, according to the present invention, the space formed by the tapered tube having the flow passage therethrough and the net-like body surrounding the plurality of small holes drilled in the main part of the tube is Since the powder and granules are filled in such a manner that the particle size decreases from the tube toward the net-like body, while the mixture of powder and liquid flows inside the tube 17, some of the liquid enters the tube 17. Drilled small hole 18
, the powder 2 filled in the space between the tube 17 and the wire mesh 19
0, and flows out from the separated liquid outflow pipe 8 through the wire mesh 19,
The mixture flowing in the tube 17 can be concentrated.

In addition, since the concentrated mixture is swept from upstream to downstream by the flow of the mixture itself, the small hole 18 formed in the tube body 17 may be clogged with the concentrated mixture, or the tube body 17 may become clogged with the concentrated mixture.
There is no possibility that the concentrated mixture will stick inside.

Furthermore, in the apparatus of the present invention, the mixture is concentrated by the difference between the pressure P1 of the mixture flowing in the tube 17 and the pressure P2 of the separated liquid, so the concentration rate can be increased by increasing Pl. Can be done.

Conversely, by tightening the valve 9 provided on the separated liquid outflow pipe 8, the concentration rate can be reduced, and in this way, the concentration rate can be freely adjusted.

Furthermore, even if the supply pressure of the mixture is increased, since the device is composed of a tube body, there is no need to increase the wall pressure of the tube body as the pressure increases, and this contributes to the miniaturization of the entire device. Helpful.

Furthermore, since there are no rotating or sliding parts within the device, there is almost no need for repair of the device, and of course it is easy to incorporate into a plant.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an outline of a cargo handling system using the liquid concentrator of the present invention, Fig. 2 is a cross-sectional view of an embodiment of the present invention, and Fig. 3 is a cross-sectional front view taken along the line A-N in Fig. 2. be. 1...Powder and granular material to be transported, 2...Liquid, 3...Mixing tank, 5...Pump, 7.
...Liquid concentrator, 9゜13-...Valve, 1
5...tank, 17...tube, 18...
... Small hole, 19 ... Wire mesh, 20 ... Powder.

Claims (1)

[Claims] 1 Consisting of a tapered tube having a flow passage therethrough, through which a mixture of powder and liquid flows, and an outer shell covering the main part of the tube, A plurality of small holes are bored in the main part, and a net-like body is provided in the space formed by the tube body and the outer shell body, surrounding the outer periphery of the /'' mark 1 at a distance from the tube body. The space formed by the tube is filled with powder so that the particle size decreases from the tube toward the net-like body, and a separated liquid outflow pipe is provided in the outer shell. Liquid concentrator.