JP3611514B2 - Salt making apparatus and seawater concentration apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a salt making apparatus and a seawater concentration apparatus.
[0002]
[Prior art]
Conventionally, as edible salt in Japan, a purified salt produced by an ion exchange resin membrane method, a natural salt produced by crystallization by naturally concentrating and evaporating seawater using a salt pad etc. are known. The refined salt is a refined salt with a purity of 99% or more of sodium chloride, and many mineral components (calcium ions, potassium ions, sulfate ions, magnesium ions, etc.) contained in seawater are removed during the production process. It is hardly included.
[0003]
On the other hand, natural salt has a high mineral content, and some brands have a sodium chloride purity of 92% or less and a mineral component of 8% or more. This mineral component is not only an essential trace element for the human body, but also gives bitterness and sweetness to salt and adds umami to cooking, and is often used by professional cooks. Moreover, the mineral component which natural salt contains is considered to be very good for health and absorption to a human body unlike the mineral component ingested from other foods.
[0004]
[Problems to be solved by the invention]
As a method for producing natural salt, for example, a method is known in which natural power (sunlight, wind power, etc.) is used to condense and condense water in seawater, and then heat to evaporate the water. These methods were inefficient and therefore costly.
[0005]
The present invention has been made with the above points in mind, and it is an object of the present invention to provide an apparatus for efficiently producing natural salt from seawater or efficiently concentrating seawater.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, a salt making apparatus is constituted by a salt making chamber in which a heating device is disposed and means for spraying seawater into the salt making chamber, and a heat radiating plate is provided in the heating device.
[0007]
The above principle can also be applied to seawater concentrators. That is, the seawater concentrating device of the present invention is constituted by a salt making chamber in which a heating device is arranged, means for spraying seawater into the salt making chamber, and means for circulating the seawater after spraying, and the heating device is provided with a heat sink. I made it.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a plan view showing a first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. The salt making apparatus 1 includes a salt making chamber 3, a heating device 5 disposed in the salt making chamber 3, and a spray nozzle 7 that sprays seawater into the salt making chamber 3. The salt making room 3 is configured in a house 9, and wheels 13 are attached to the bottom surface of the house 9 to form a mobile house. Of course, the wheel 13 may be removed and fixed. If it is mobile, it can be installed in any area or land regardless of location, so convenience is improved.
[0009]
The heating device 5 is installed on the floor 15 of the house 9. The heating device 5 has a house shape made of metal (for example, made of stainless steel) and has a gable roof. The inside of the heating device 5 is hollow, and contains charcoal, wood, and other combustible materials for combustion. Heat is released into the salt making chamber 3. The fuel is input from the input port 17, and the combustion gas is discharged from the chimney 18 (FIG. 2). An air intake 20 (FIG. 4) is formed on the side surface of the heating device 5, and air is introduced into the air intake 20 from the outside through a duct 22 (FIGS. 1 to 3) (however, in FIG. Omitted). A plurality of metal heat sinks 21 are attached to the gable roof 19 (FIG. 4) of the heating device 5 to improve the heat dissipation effect.
[0010]
If the heating device 5 as described above is used, the room 3 can be heated to a high temperature of, for example, 120 ° C. or more, and when seawater is sprayed from the spray nozzle 7, the water in the seawater is instantly evaporated. The seawater component is crystallized and dropped as salt. In addition, the shape of the heating apparatus 5 is not limited to what was described in FIG. 4 (house form). The shape of the heating device 5 varies depending on the fuel. For example, when a fuel such as gas, petroleum, electricity, or the like is used, the shape may be set accordingly. The shape of the heat sink may be determined according to the shape of the heating device 5. In short, any shape can be used as long as the heat of the heating device 5 is efficiently released into the salt making chamber 3. Good.
[0011]
A commercially available spray nozzle can be used as the spray nozzle 7, and a plurality of spray nozzles 7 are attached to the inside of the salt making chamber 3 on the pipes 23 piped on the side walls 9 a on both sides of the house 9. The pipe 23 is connected to a seawater pipe 25. The seawater pipe 25 is connected to a seawater tank (not shown), and stored seawater is supplied. Any type of spray nozzle 7 may be used. For example, a filter made of a rust-proof stainless steel net is housed in the nozzle 7 so that impurities such as dust in seawater can be removed by this filter, and can be easily replaced when the filter is clogged. Things may be used.
[0012]
Belt conveyors 27 for conveying crystallized salt are disposed on both sides of the heating device 5, and inclined plates 29 for collecting the dropped salt to the belt conveyor 27 are disposed on both sides of each belt conveyor 27, 27. Has been placed. A salt receiver 31 is disposed at the end of the belt conveyor 27. Of the inclined plates 29 and 29 on both sides of the belt conveyor 27, the inclined plate 29 on the inner side (closer to the heating device 5) is disposed from directly below the roof 19 of the heating device 5 to the belt conveyor 27, and is outer (closer to the side wall 9a). The inclined plate 29 is arranged from the side wall 9 a to the belt conveyor 27. However, the belt conveyor 27 may be disposed directly below the roof 19 without providing the inclined plate 29. An outside air inlet 33 is provided at the lower portion of the side wall 9a, and a ventilation opening 35 is provided at the roof portion of the house 9. The outside air inlet 33 and the ventilation opening 35 are each covered with an insect net for preventing insects. Yes.
[0013]
Next, the operation of the salt making apparatus 1 will be described.
First, the fuel is introduced into the heating device 5 and burned in advance, and the temperature of the room 3 is raised to, for example, about 120 ° C. Since the heating device 5 has a plurality of heat radiation plates 21, heat is efficiently released into the salt making chamber 3, and the room reaches a high temperature in a short time. Next, seawater is introduced into the seawater pipe 25, and the seawater is sprayed into the salt making chamber 3 through the injection nozzle 7. The seawater sprayed in the salt making chamber 3 evaporates due to the high temperature, crystallizes and falls as salt. The salt dropped on the roof 19 of the heating device 5 slides down to the belt conveyor 27 through the roof 19 and the inclined plate 29, and is then conveyed by the belt conveyor 27 and collected in the salt receiver 31. In addition, air is introduced into the salt making chamber 3 from the outside air inlet 33 and exits from the ventilation port 35, whereby the evaporated water is discharged from the ventilation port 35 to the outside of the room. . A ventilation fan for exhaust may be attached to the ventilation port 35.
[0014]
As described above, since the roof 19 of the heating device 5 has a gradient shape, the salt dropped on the heating device 5 is further dropped onto the belt conveyor 27 without adhering to the roof, and is efficiently collected. Is done. The slope θ of the roof is not particularly limited, but the salt becomes less likely to be on the roof 19 as the slope θ is decreased. As an example, when θ = 45 ° or less, salt is unlikely to be on the roof 19. Further, since the belt conveyor 27 is used, the worker can collect the salt without entering the salt making chamber 3 and is extremely hygienic. In addition, you may collect | recover salt manually without using the belt conveyor 27, and in that case, you may make it skim out of salt using a rake-like (T-shaped) instrument, for example. At this time, it is preferable that the instrument is placed in the salt making room and the operator operates the instrument from the entrance / exit side of the salt making room to scoop out the salt without entering the room.
[0015]
FIG. 5 shows a second embodiment of the present invention, in which a seawater concentrating device 37 is configured using the same principle as the salt making device 1 described above. That is, the seawater concentrating device 37 sets the temperature in the salt making chamber 3 of the salt making device 1 to be low (for example, about 50 ° C.), collects and circulates the sprayed seawater without crystallizing the seawater, Increase the salinity of. The difference from the salt making apparatus 1 is that a seawater circulation path is provided in place of the belt conveyor 27. The seawater circulation path includes a sloped floor 39 provided on the floor portion of the house 9, a receiving groove 41 for receiving seawater flowing down the floor 39, a water supply pipe 43 connected to the receiving groove 41, and a water supply pipe 43. A storage tank 45 for storing the concentrated seawater, a pumping pump 47 for refluxing the concentrated seawater in the storage tank 45, a pumping pump 47, and a water supply pipe 49 communicating with the seawater pipe 25. Other configurations are the same as those of the salt making apparatus 1 described above.
[0016]
By using the seawater concentrator 37 as described above, seawater can be efficiently concentrated by repeating spraying, circulation, and respraying of seawater. This concentrating device 37 can be used when concentrating seawater when transporting seawater having commercial value such as deep water. Since the concentrated seawater is small in both volume and weight, the transportation cost can be reduced, and thereby the cost of the product using the deep water can be greatly reduced.
[0017]
【The invention's effect】
As described above, according to the present invention, natural salt can be efficiently produced from seawater or seawater can be efficiently concentrated.
[Brief description of the drawings]
FIG. 1 is a plan view of a salt making apparatus.
2 is a cross-sectional view taken along line AA in FIG.
3 is a cross-sectional view taken along line BB in FIG.
FIG. 4 is a perspective view of a heating device.
FIG. 5 is a schematic view of a seawater concentration apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Salt making apparatus 3 Salt making chamber 5 Heating apparatus 7 Spray nozzle 21 Heat sink 37 Seawater concentration apparatus

Claims (4)

A salt making chamber provided with a heating device; and means for spraying seawater into the salt making chamber, wherein the heating device includes a heat radiating plate for improving a heat radiation effect into the salt making chamber. apparatus. The salt making apparatus of Claim 1 which provided the inclined roof in the said heating apparatus. The salt making apparatus of Claim 2 which provided the conveyance means to convey the crystallized salt under the said inclined roof. A salt-making chamber in which a heating device is arranged; means for spraying seawater into the salt-making chamber; and means for circulating seawater after spraying; and the heating device dissipates heat to improve the heat dissipation effect into the salt-making chamber. A seawater concentration apparatus comprising a plate.

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