JPH0111701Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a dissolving device for sodium chloride, especially when the supply of water for dissolution is stopped, etc. It prevents non-dissolved foreign substances (hereinafter referred to as non-dissolved substances) such as mixed mud, sand, and metal pieces from leaking from the holes (jet part) of the supporting bed and falling under the supporting bed, and also prevents the presence of sodium chloride. To efficiently obtain a concentrated and clear sodium chloride aqueous solution by moving and accumulating the above-mentioned insoluble substances mixed in the layer in one place by a horizontal or oblique water stream ejected from the jet part of the support bed and taking them out of the system. This invention relates to a device for dissolving sodium chloride.

[Conventional technology]

Conventionally, in the lower part of a sodium chloride dissolution tank, a support bed with a vertically oriented jet, such as a perforated plate, a wire mesh, or a slit formed by arranging a plurality of rod-like bodies in a screen or lattice shape, was installed horizontally. A dissolving device (Jitsukai Sho
55-53532, 53533, and 43577) are known.

[Problem that the invention attempts to solve]

However, in any of the above devices,
When the jetting force of water passing through a jetting part such as a hole or slit is strong, insoluble substances remain in the dissolution tank above the support bed and gradually increase in concentration, resulting in clear chloride as the operating time progresses. It becomes difficult to obtain an aqueous solution of sodium. On the other hand, if the water jetting force is weak, if the water supply is stopped, or if sodium chloride is supplied in an empty tank, fine particles of sodium chloride will flow out because the jet part is oriented vertically. The material falls to the bottom of the support bed through the pipette, and mixes with insoluble substances of high specific gravity that fall during the dissolution operation, making it difficult to separate them from each other, and when these substances are discharged from the system, sodium chloride is also excreted, resulting in a large loss of sodium chloride. In addition, even if the water jetting force is appropriate, the spaces between each jetting part become blind spots, so if insoluble substances are mixed in with sodium chloride, they may stagnate between each jetting part. There was a risk that the solution would not flow easily and would aggregate and form a deposited layer on the support bed, resulting in a decrease in dissolving ability. Furthermore, non-dissolved substances larger than the dimensions of the openings in the jets will accumulate residually on the top of the support bed, and non-dissolved substances close to the dimensions of said openings will often clog the jets, especially In a support bed that has an inverted triangular wedge-shaped hole (jet part) that opens at the top of the support bed and narrows at the bottom, insoluble substances are pressed against the wedge-shaped hole by the weight of the sodium chloride and the hole is closed. As a result, the upward flow was biased and the water flow short-circuited the sodium chloride layer, making it impossible to obtain a sodium chloride aqueous solution with a predetermined concentration, resulting in a decrease in dissolution ability or inoperability.

Therefore, an object of the present invention is to prevent sodium chloride and insoluble substances mixed therein from falling to the bottom of the supporting bed, and to prevent insoluble substances from accumulating on the supporting bed. It is an object of the present invention to provide an apparatus for dissolving sodium chloride, which can keep the inside of a dissolution tank clean by moving and accumulating at the edge and discharging it outside the system, and can efficiently obtain a clear and highly concentrated sodium chloride aqueous solution.

[Means for solving problems]

The present invention achieves the above object by providing a support bed for sodium chloride with a large number of jets in the lower part of the dissolution tank, and providing an inflow pipe for water at the bottom of the support bed and an outflow pipe for the solution at the top. In the provided sodium chloride dissolving device, each of the jet portions is formed by a jet passage, each of the jet passages having a wall portion vertically above the inlet, and with the outlet direction directed toward the same side wall of the dissolution tank. This was achieved using a sodium chloride dissolving device characterized by certain features.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the sodium chloride dissolving apparatus of the present invention shown in the drawings will be described below.

FIG. 1 shows a vertical cross-sectional view of one embodiment of the present invention. 1 is a dissolution tank, which is square in the illustrated embodiment, but can be of any shape such as round or polygonal. It can be in the form of a type. Reference numeral 3 denotes a supporting bed having a large number of jet flow passages 2, and is provided at a lower part of the dissolving tank 1, that is, at a portion spaced apart from the bottom of the dissolving tank 1, so as to cross the dissolving tank 1. Each of these jet flow passages 2 is as shown in FIG.
It has a wall portion 2b vertically above the inlet 2a, and is provided on the support bed 3 horizontally or diagonally with the outlet 2c directed toward the same side wall of the dissolving tank 1. or,
A water inflow pipe 7 is provided at a position below the supporting bed 3, passing through the dissolution tank 1, and a water inflow pipe 7 is provided at a position above the supporting bed 3, passing through the dissolution tank 1. An outflow pipe 8 is provided. Note that the outflow pipe 8 may be connected to the inflow pipe 7 via a circulation pipe or the like (not shown). Reference numeral 4 denotes a collection groove provided as necessary at the edge of the support bed 3; 5 is a discharge pipe inserted through the edge or the collection groove 4; the discharge pipe 5 is equipped with a drain valve 6; is attached.

To explain in more detail the support bed 3 in the sodium chloride dissolution apparatus of the present invention, the support bed in FIG. A jet flow passage 2 (slit) is formed in between, and the structure is arranged in a stepped manner. In addition to this, the support bed 3 can be replaced with a flat plate in place of the support bed forming plate 3a as shown in FIGS. 2 to 4.
As shown in the figure, a crank-shaped plate may also be used. In this case, the crank-shaped plate in FIG.
2, and the outlet 2c of the jet passage 2 of the horizontal plate portion 31.
It is composed of a hanging plate part 33 integrally connected to the side edge. In addition, the crank-shaped plate in FIG.
An outlet side inclined plate part 34 is integrally connected to the side edge thereof by being inclined downward, and an outlet side inclined plate part 34 is integrally connected to the edge part of the horizontal plate part 31 on the side of the inlet 2a of the jet flow passage 2 by being inclined upward. It is composed of an entrance side inclined plate part 35. Furthermore, the crank-shaped plate in FIG. 4 includes a central inclined plate part 36 that is inclined upward toward the outlet 2c side of the jet flow passage 2, and a central inclined plate part 36 that is inclined downward toward the outlet 2c side of the jet flow passage 2 at its upper edge. an outlet-side inclined plate part 37 which is integrally connected to the outlet side inclined plate part 37; and an inlet-side inclined plate which is inclined upwardly toward the inlet 2a side of the jet passage 2 and integrally connected to the lower edge of the central inclined plate part 36; It is composed of a section 38. In addition, as the supporting floor 3, a large number of supporting floor forming plates 3 are used as described above.
As shown in FIG. 5, without using a, a cut is made in a flat plate and the inside thereof is bent and raised, and the bent part is used to form a porous jet passage 2 in the flat plate by bending and raising. It is also possible to use a wall portion 2b that covers vertically above the entrance 2a. Among these, the support bed 3 as shown in FIGS. 2 to 4, which uses crank-shaped plates, has the feature of completely preventing sodium chloride and insoluble substances from falling to the bottom of the support bed 3. .

Further, the support bed 3 can be provided horizontally or inclined downward in the opening direction of the outlet 2c of the jet flow passage 2, but it is preferably provided in an inclined manner as shown in the figure. In this way, the supporting bed 3 is connected to the outlet 2c of the jet passage 2.
By slanting downward in the direction of the opening of the jet channel 2, the water flow from the outlet 2c of the jet passage 2 hits the surface of the support bed 3 well, thereby making it possible to prevent insoluble substances from settling and accumulating on the support bed 3. Not support floor 3
The non-dissolved substances that have settled upward can be effectively moved to the lower edge of the support bed by the horizontal or diagonal water stream jetted from the outlet 2c of the jet passage 2, and can be accumulated there. Therefore, if the collecting groove 4 is provided at the lower edge and the non-dissolved substances are collected there, the support bed 3 can be kept cleaner.

In addition, when the support floor 3 is arranged at an angle, the angle of inclination is preferably within 30 degrees with respect to the horizontal direction, and more preferably 5 to 5 degrees with respect to the horizontal direction.
It is 15 degrees. If the inclination angle of the support bed 3 is too large, the difference between the deep and shallow parts of the sodium chloride layer will become large, and short circuits of water flow will easily occur in the shallow parts, which is not preferable.

In addition, the outlet 2 of the jet passage 2 formed in the support bed 3
The opening area of c is relative to the cross-sectional area of dissolving tank 1.
It is preferably 0.5 to 5%. That is, if it is less than 0.5%, it is difficult to increase the amount of water relative to the size of the dissolving tank 1, and the capacity tends to decrease. On the other hand, if it exceeds 5%,
It is difficult to increase the flow rate of the water flow passing through the jet passage 2, and the cleaning effect of the support bed 3 and the ability to transfer insoluble substances are likely to decrease.In addition, if the flow rate of the jet passage 2 is extremely increased, the flow rate of the sodium chloride layer will be reduced. The condition becomes excessive,
A bumping phenomenon occurs, causing a short circuit in the water flow, making it difficult to obtain a highly concentrated aqueous solution.

The sodium chloride dissolving device of the present invention has the above-mentioned configuration. When using the device, firstly, sodium chloride such as raw salt or ordinary salt is poured into the dissolving tank 1 from above and placed on the support bed 3. Place it on.
At this time, as described above, each of the jet passages 2 of the support bed 3 has a wall portion 2b vertically above the inlet 2a, and the outlet 2c is directed toward the same side wall of the dissolving tank 1, so that this jet passage There is almost no chance that sodium chloride will drop out through the 2-filter, and even if a small amount of sodium chloride does drop out, it will dissolve and disappear as soon as the dissolution operation begins.

Next, water is caused to flow into the dissolution tank 1 through the inflow pipe 7. This inflow of water from below causes the water level in the dissolution tank 1 to rise, and the inflowing water passes through the jet passage 2 of the support bed 3 and becomes a horizontal or diagonal water flow into the sodium chloride layer 9. After staying there for a predetermined time, it becomes a saturated solution and flows out from the outflow pipe 8, becoming the target solution 10 of sodium chloride.

As sodium chloride dissolves as described above, insoluble substances such as mud, sand, and metal pieces in the sodium chloride layer 9 tend to accumulate downward due to the difference in specific gravity, but they do not reach the surface of the support bed 3. Since a horizontal or diagonal water flow is generated, a certain directionality is given regardless of the flow velocity of the water flow, and the water flow jetted from the outlet 2c of the jet flow passage 2 flows over the support bed 3 into the accumulation groove 4.
It is transported securely to the destination and accumulated there.
FIG. 6 shows the manner in which insoluble substances are transported by water flow in this case. In FIG. 6, the solid line arrows indicate the water flow dissolving the sodium chloride near the surface of the support bed 3, and the broken line arrows indicate the water flow dissolving the sodium chloride near the surface of the support bed 3. The arrows each indicate the manner in which the insoluble substance 11 is transferred toward the collecting groove portion 4 by the water flow.

When the insoluble substance 11 has accumulated in the accumulation groove 4, by opening the drain valve 6, only the insoluble substance 11 can be easily discharged to the outside.

[Effect of idea]

The effects of the sodium chloride dissolving apparatus of the present invention constructed as described above are listed below.

(1) The melting device of the present invention has a structure in which each of the jet passages in the support bed has a wall vertically above the inlet, and the outlet direction is directed toward the same side wall of the melting tank. Natural fall of sodium chloride and insoluble substances to the lower part can be prevented regardless of particle size.

(2) In support beds with normal perforated plates, wire mesh, or vertical openings (slits), insoluble substances will concentrate and accumulate on the support bed over time as the dissolution of sodium chloride progresses. Or, small particles fall through the holes to the bottom of the support floor,
In the dissolving device of the present invention, the support bed is always kept clean by moving non-dissolved substances with a horizontal or diagonal water stream ejected from the outlet of the jet passage and collecting them at the edge of the support bed or in the collecting groove. Because it can be maintained, a clean aqueous sodium chloride solution can be obtained.

(3) When dissolution is performed batchwise, undissolved sodium chloride may remain between the holes in the final stage in the case of perforated plates; Since there is a horizontal or diagonal water flow on the upper surface, this problem does not occur, and the sodium chloride can be completely dissolved to the end.

(4) If the amount of insoluble substances such as mud and sand in sodium chloride that accumulates in the dissolution tank due to the difference in specific gravity increases, the dissolution efficiency will decrease accordingly, and the amount of saturated solution taken out per unit time will decrease. However, with the dissolving device of the present invention, it is possible to easily discharge non-dissolved substances accumulated on the periphery of the support bed, so that a clear and highly concentrated sodium chloride aqueous solution can be produced continuously and with high efficiency. Obtainable.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of one embodiment of the sodium chloride dissolving device of the present invention, and Figs. 2, 3, 4, and 5 are enlarged cross-sections of the main parts of different sodium chloride support beds. 6 are enlarged views of the main parts of FIG. 1. 1... Dissolution tank, 2... Jet flow path, 3... Support bed, 7... Inflow pipe, 8... Outflow pipe.

Claims (1)

[Claims for Utility Model Registration] (1) A support bed of sodium chloride having a large number of jets is provided at the lower part of the dissolution tank, an inflow pipe for water is provided at the lower part of the support bed, and an outflow pipe for the dissolved solution is provided at the upper part of the support bed. In the sodium chloride dissolving device each provided with a pipe, each of the jet portions is formed by a jet flow passage,
An apparatus for dissolving sodium chloride, wherein each of the jet flow passages has a wall portion vertically above the inlet, and the outlet direction is directed toward the same side wall of the dissolution tank. (2) Utility model registration claim No. 1, in which the supporting bed is inclined downward in the direction of opening of the outlet of the jet flow passage.
An apparatus for dissolving sodium chloride as described in (1). (3) The sodium chloride dissolving device according to claim (2) of the utility model registration, wherein a groove for collecting insoluble substances is provided near the lower edge of the support bed. (4) The sodium chloride dissolving device according to claim (1), wherein the opening area of the outlet of the jet passage in the support bed is 0.5 to 5% of the cross-sectional area of the dissolving tank. (5) The chloride chloride according to claim (1) of the utility model registration claim, wherein the support bed is formed by arranging a large number of elongated support bed forming plates in a stepped manner with a jet flow passage formed between each of them. Sodium dissolution equipment. (6) The sodium chloride dissolving device according to claim (5) of the utility model registration, wherein the support bed forming plate is a flat plate. (7) The sodium chloride dissolving device according to claim (5) of the utility model registration claim, wherein the supporting bed forming plate is a crank-shaped plate. (8) A crank-shaped plate includes a horizontal plate part, an upright plate part integrally connected to the edge of the jet passage on the inlet side thereof, and an upright plate part integrally connected to the edge of the horizontal plate part on the outlet side of the jet passage. 7. A sodium chloride dissolving device according to claim (7) of the utility model registration, which comprises a connected hanging plate portion. (9) A crank-shaped plate is integrally connected to a horizontal plate part and an edge on the outlet side of the jet passage, and an outlet side inclined plate part which is integrally connected to the outlet side edge of the jet passage of the horizontal plate part, and an outlet side inclined plate part on the inlet side of the jet passage of the horizontal plate part. 7. The sodium chloride dissolving device according to claim (7), which is comprised of an inlet-side inclined plate portion which is integrally connected to the edge of the inlet side in an upwardly inclined manner. (10) The crank-shaped plate has a central inclined plate part that is inclined upward toward the outlet side of the jet passage, and an outlet that is integrally connected to the upper edge of the central inclined plate part that is inclined downward toward the outlet side of the jet passage. Request for registration of a utility model comprising a side inclined plate part and an inlet side inclined plate part which is integrally connected to the lower edge of the central inclined plate part by being inclined upward toward the inlet side of the jet passage. A device for dissolving sodium chloride according to item (7).