JPH0957259A - Sea water desalting device and method for using this device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to provide the subject device with both functions of a small-sized sea water desalting device to be used in fishing boats and culture farms for fish and shellfishes and a washing machine using sea water or fresh water. SOLUTION: This sea water desalting device is constituted by connecting, successively from a sea water side, a strainer 8, a prefilter 12, a bypass circuit C installed selectively in juxtaposition with this prefilter 12, a liquid feeder A, a reverse osmosis membrane section B, a fresh water tank 54 communicated selectively therewith and a potable water tank 25 interposed with a filter 23. While a washing section D is disposed selectively communicatably between the liquid feeder A and the reverse osmosis membrane section B, the washing section D is communicated connectably and disconnectably with and from the condensed water under the pressurization of the reverse osmosis membrane section B. The fresh water tank 54 is made connectable and disconnectable selectively with and from the suction side of the liquid feeder A. Various kinds of the use methods by selection of the respective constituting parts are thus made possible.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a small seawater desalination apparatus used in a fishing boat or a seafood farm, and a seawater desalination / washing apparatus capable of serving as a washing machine using seawater or fresh water. A method of using this device.

[0002]

2. Description of the Related Art In facilities such as fishing grounds and seafood farms, it is necessary to wash equipment such as fishing boats and fishing nets, seafood and drinking water with seawater or fresh water. Especially when working in places without water supply facilities, fresh water and drinking water are stored in tanks and transported,
A small seawater desalination plant is used because it must be supplied. On the other hand, in these facilities, many washing machines using sea water or fresh water are widely used.

For example, FIG. 3 shows a small and simple seawater desalination apparatus according to the prior art, which is driven by a motor such as a motor and an engine. It is used for fresh water, and in the figure, an engine 1 as a prime mover is started, and after a predetermined number of rotations is made by a throttle lever 3 through a cable 2, the engine is operated by operating a clutch 4. When the power of No. 1 is transmitted to the supply pump 6 via the transmission member 5, the supply pump 6 is driven, so that the seawater 7 is strayed.
It is sucked from the water supply pipe 9 through the nozzle 8 and discharged to the supply pipe 10.

A prefilter 12 is installed in the passage of the supply pipe 10 in which a pressure gauge 11 is interposed, and fine foreign matter mixed in seawater is filtered and supplied to a pressure pump 13. The pressure pump 13
When the clutch 14 is operated, the power of the engine 1 is transmitted to the engine 1 through the transmission member 15.

The pressure-feeding pump 13 sucks in and discharges the supplied seawater, the pulsation is reduced by the accumulator 16, and the seawater is introduced into the reverse osmosis membrane 18 through the pressure-feeding pipe 17. The outlet pipe 19 is provided with a throttle valve 20A. When the throttle valve 20A is adjusted by looking at the pressure gauge 21 so that the pressure of seawater introduced into the reverse osmosis membrane 18 becomes a predetermined reverse osmosis pressure, Permeate water is obtained from the pipe 22 and concentrated water is obtained from the outlet pipe 19.

[0006] The permeated water is further adsorbed and removed of chlorine and odor by a filter 23 such as an activated carbon filter, stored as drinking water 26 in a drinking water tank 25 from a discharge pipe 24, and used from a cock 27 for timely use. To be done.

On the other hand, the concentrated water passes through the throttle valve 20A and is discharged and discharged from the bypass hose 28. The relief valve 29 is for protecting the reverse permeable membrane 18, and when the pressure of the introduced seawater becomes equal to or higher than a predetermined pressure, the relief valve 29 opens and the pressure water is supplied to the bypass hose 28. It is designed to release.

[0008] Next, Fig. 4 shows an example of a conventional washing machine using sea water or fresh water, which is used for washing nets in a seafood farm and various washing of fishing boats and fishing ground facilities. Is. In this figure, the same or equivalent parts as in FIG. 3 are designated by the same reference numerals.

When the pressure-feed pump 13 is driven by the transmission member 15, the power of the engine 1 adjusted to a predetermined number of revolutions by the slot lever 3 through the cable 2 is driven by the transmission member 15, and the seawater 7 becomes strainer 8. Through the water suction hose 30, discharged to the pressure feed pipe 17, guided from the extended high pressure hose 31 to the cleaning nozzle 32, jetting high-pressure seawater toward the object to be cleaned, mesh and basket. Clean the deposits. At this time, the injection pressure is adjusted by the pressure regulating valve 33, and the spillage is collected by the spillage pipe 34.
It is released into the seawater 7 which is the liquid source via the.

When the cleaning operation is performed with fresh water, the fresh water 38 is stored in a fresh water tank 37 installed in the vicinity of the cleaning device by the extension hose 36 from the tap 35 of the water supply. , The strainer 8, the water-absorbing hose 30, and the spill-water hose 34 are put in and sucked by the pressure pump 13, and guided from the extended high-pressure hose 31 to the cleaning nozzle 32.
The cleaning work is performed by injecting high-pressure fresh water.

[0011]

A small and simple seawater desalination apparatus as shown in FIG. 3 has been introduced into fishing boats, remote islands where water supply is not installed, drought areas, and seawater or fresh water. The washing machine as shown in 4 is also installed in a seafood farm and a fishery facility, and is purchased and used separately. That is, although each device has many parts that can be shared, since it is a dedicated machine, a user who needs both uses will purchase the above two devices, which is economical. There is a drawback and a problem that the physical burden becomes large.

[0012]

In the present invention, attention is paid to the fact that the seawater desalination apparatus and the washing machine can share main constituent elements and members such as a pump for feeding liquid, a prime mover, and piping. Then, so as to create drinking water from the seawater through the reverse osmosis membrane, in order from the seawater side, the strainer (8),
Prefilter (12), detour (C) selectively installed in parallel with this prefilter (12), liquid transfer device (A), reverse osmosis membrane section
(B) and a fresh water tank (54) selectively connected to this and a drinking water tank (25) having a filter (23) interposed therein, which is a seawater desalination apparatus, wherein the liquid transfer A washing unit (D) can be selectively communicated between the device (A) and the reverse osmosis membrane unit (B), while the washing unit (D) is a unit of the reverse osmosis membrane unit (B). Proposed is a seawater desalination apparatus, which is connected to the concentrated water under pressure so as to be connectable and disconnectable, and the fresh water tank (54) is selectively connectable and disconnectable to the suction side of the liquid transfer device (A). Therefore, by selectively using each of the above-mentioned constituent parts, drinking water from seawater, fresh water for washing, washing work with concentrated water under the fresh water of these drinking water and fresh water for washing, washing work with seawater, fresh water It can be used for cleaning work.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seawater desalination apparatus of the present invention is schematically shown in FIG. 1, in which some of the components are equivalent to those shown in FIG. 3 or FIG. Or, the same parts will be denoted by the same reference numerals. To describe, the seawater 7 is passed through the strainer 8, the suction pipe 9, and the prefilter 12 through the liquid delivery device A, the reverse osmosis membrane part B, and the filter 23, and the drinking water tank 25.
From the strainer 8 to the prefilter 12
A bypass C leading to the liquid delivery device A without passing through the liquid delivery device A and a branch between the liquid delivery device A and the reverse osmosis membrane part B to selectively select a cleaning part D.
To the washing section D from the circuit E for returning the concentrated water under pressure of the reverse osmosis membrane section B to the seawater 7, the reverse osmosis membrane section B and the filter 23. And a circuit H selectively connected to the inflow side of the liquid delivery apparatus A from the fresh water tank 54.

Next, in FIG. 2, which more specifically expresses the configuration of the apparatus of the present invention schematically shown in FIG. 1, the conventional structure shown in FIG. 3 and FIG. 4 is the same as in FIG. The same or like parts as those in the example will be described with the same reference numerals. In FIG. 2, the engine 1 as a prime mover is started, and after the speed is set to a predetermined value by the slot lever 3 through the cable 2, the power of the engine 1 is transmitted through the transmission member 5 by operating the clutch 4. When the water is transmitted to the supply pump 6, the supply pump 6 is driven so that the seawater 7 is sucked from the suction pipe 9 through the strainer 8 and discharged to the supply pipe 10.

A prefilter 12 is installed in the passage of the supply pipe 10 in which a pressure gauge 11 is interposed, and fine foreign matter mixed in seawater is filtered, and a pressure pump 13 as a liquid feeding device A is provided. When it is ready to be supplied to
The pressure feed pump 13 is operated by the clutch 14 to
The power of the engine 1 is transmitted via the transmission member 15.

The pressure-feeding pump 13 sucks in and discharges the supplied seawater, and the pulsation is reduced by the accumulator 16 and is introduced into the reverse osmosis membrane 18 of the reverse osmosis membrane portion B through the pressure-feeding pipe 17. It The reverse osmosis membrane 1 is provided in the outlet pipe 19.
8 is provided with a pressure regulating valve 20 that constitutes the reverse osmosis membrane portion B, and the pressure regulating valve 20 is viewed by looking at the pressure gauge 21 so that the pressure of seawater introduced into the reverse osmosis membrane 18 becomes a predetermined reverse osmosis pressure.
The permeated water from the outlet pipe 22 by adjusting the
Concentrated water is obtained from.

The permeated water is further adsorbed and removed of chlorine and odor by a filter 23 such as an activated carbon filter, stored as drinking water 26 in a drinking water tank 25 from a discharge pipe 24, and used from a cock 27 for timely use. To be done.

On the other hand, the concentrated water passes through the pressure regulating valve 20 and passes through the circuit F.
Is discharged and discharged from the bypass hose 28 which constitutes Since the relief valve 29 protects the reverse osmosis membrane 18, when the pressure of the introduced seawater becomes equal to or higher than a predetermined pressure, the relief valve 29 opens to release the pressurized water to the bypass hose 28. It is becoming like this.

A three-way cock 39 is provided in the middle of the suction pipe 9, and the three-way cock 39 is connected to a three-way cock 41 provided on the supply pipe 10 by a conduit 40, and the supply pipe 10 Another three-way cock 42 is installed in the pipe, and a pipe line 43 coming out of the three-way cock 42 is connected to the pressure feed pump 13 via the pressure gauge 11 and passes through these three-way cocks 39, 41, 42. The detour C is formed.

A branch pipe 45 extending from a three-way cock 44 provided in the middle of the pressure feed pipe 17 is connected to a pressure regulating valve 33, and is derived from this pressure regulating valve 33 which constitutes a circuit E together with the three-way cock 44 and the branch pipe 45. The pipe line 46 is a coupler 47.
Is connected to the extended high pressure hose 31 and a washing nozzle 32 having an open / close lever 48 is formed at the end of the extended high pressure hose 31. The extended high pressure hose 31 and the open / close lever are provided. The cleaning unit D is composed of the cleaning nozzle 48 and the cleaning nozzle 32.

A branch pipe 49, which branches from the pipe line 46 and constitutes the circuit G, is connected to a three-way cock 50, and the three-way cock 50 is provided downstream of the pressure regulating valve 20 of the outlet pipe 19, Spill pipe 5 derived from the pressure regulating valve 20
1 is connected to the bypass hose 28.

The lead-out pipe 53 from the three-way cock 52 provided in the middle of the lead-out pipe 22 is introduced into the fresh water tank 54, and the clean water 55 for cleaning stored in the fresh water tank 54.
Can be taken out of the cock 56 as needed. A suction pipe 57, which is drawn from the fresh water tank 54 and constitutes the circuit H, is connected to the three-way cock 41.

Next, various methods of using the seawater desalination apparatus of the present invention having the above-mentioned structure will be sequentially described. First, in the production of drinking water, the seawater 7 is passed through the strainer 8 and the seawater 7 through the strainer 8 and the suction pipe 9. Pumping up, prefilter 12
The seawater 7 filtered in step 3 is supplied to the pressure pump 13 and discharged. Next, this seawater 7 is adjusted to a predetermined pressure by the pressure regulating valve 20, introduced into the reverse osmosis membrane 18, separated into permeated water and concentrated water, and the permeated water passes through the three-way cock 52 and adsorbs the scaly component etc. in the filter 23. The drinking water 26 is removed to make fresh water and stored in the drinking water tank 25.

Next, in producing fresh water for cleaning, in the production of drinking water, the three-way cock 52 is switched to the direction of the outlet pipe 53 to create fresh water for cleaning 55, and the fresh water tank 54.
Store in.

In the washing operation with seawater, the pressure feed pump 13 pumps the seawater 7 from the strainer 8 to the three-way cocks 39, 41, 42 while the power of the engine 1 is shut off by the clutch 4 and the supply pump 6 is stopped. Inhaled through the pressure feed pipe 43
Is discharged. The three-way cock 44 is in the direction of the branch pipe 45, and is adjusted to a predetermined pressure by the pressure regulating valve 33, so that the coupler 47
The cleaning operation is carried out by the cleaning nozzle 32 through the extended high pressure hose 31 connected to it. When the injection is stopped, the entire flow rate is discharged from the pressure regulating valve 33 from the spill pipe 34 and discharged by the bypass hose 28.

In the cleaning operation with fresh water, the power of the engine 1 is shut off by the clutch 4 and the supply pump 6 is stopped, and the pumping pump 13 cleans the clean water 55 stored in the fresh water tank 54. Suction pipe 57, three-way cock 41,
It is sucked through 42 and discharged to the pressure feed pipe 17. At this time, the three-way cock 44 is in the direction of the branch pipe 45, is adjusted to a predetermined pressure by the pressure regulating valve 33, is guided to the coupler 47, and is passed through the extended high pressure hose 31 connected thereto, and the washing nozzle 32 is connected.
Perform the cleaning work by. Since the water is saved when cleaning with clean water, the outlet of the bypass hose 28 is the clean water tank 5
When the injection is stopped by the open / close lever 48, the entire flow rate is discharged from the pressure regulating valve 33 from the spill pipe 34 and discharged by the bypass hose 28.

In order to produce fresh water for cleaning while performing the washing operation using the concentrated water, in the case where the drinking water is produced while performing the washing operation using the concentrated water, the three-way cock 52 is connected to the outlet pipe 53. Switching to the direction, clean water 55 for cleaning is generated and stored in the fresh water tank 54. On the other hand, on the other hand, a washing operation with concentrated water is performed. The injection from the cleaning nozzle 32 and the stop are performed by the open / close lever 48, and when the injection is stopped, the entire flow rate is discharged from the spill pipe 51 from the pressure regulating valve 20.

In order to produce drinking water while performing a washing operation using concentrated water, the three-way cock 50 is switched in the direction of the branch pipe 49 in the above-mentioned drinking water making process to divert the concentrated water under pressure. The washing nozzle 3 is led from the pipe 49 to the coupler 47 and is passed through the extended high pressure hose 31 connected thereto.
Perform the cleaning work according to 2. Meanwhile, drinking water is produced.

When an engine is used as a prime mover, the flow rate of seawater introduced into the reverse osmosis membrane 18 can be controlled by a slot lever 3 which adjusts the rotation speed of the engine 1, and when only the cleaning work is performed. Can also use the engine 1 at a high speed with the throttle lever-3, which makes it possible to increase the injection flow rate. The pressure of seawater introduced into the reverse osmosis membrane 18 is about 40.
A ~60Kgf / cm ² and this is within the range of pressures used in conventional cleaning machines.

In the present invention, as described above, among the components of the conventional seawater desalination apparatus and the washing machine, the pressure pump 13, the engine 1 as the prime mover, and the pressure regulating valve 3 are included.
3, the accumulator 16, the pressure gauge 21 and the suction pipe 9, the supply pipe 10, the pressure feeding pipe 17, the outlet pipe 22, the outlet pipe 19, the bypass hose 28 and the like are commonly used, and the three-way cocks 42, 4 are used.
4, 52, 39, 41, 50 are provided so as to have a function of performing the above-mentioned 6 types of work, and these can be selected by a combination of the operations of the three-way cocks. The cock can also be of the electric type and, in this case, can be selected by a switch.

Next, Table 1 shows the six functions of the device of the present invention and the direction of passage of each three-way cock. The direction of communication is based on the installation mode of each three-way cock shown in FIG.

[0032]

[Table 1]

[0033]

【The invention's effect】

1) By using the device according to the present invention, it has a function of producing water by desalination of seawater and a function of a washing machine, so that it is not necessary to separately install each mechanical device as in the conventional case.
It is possible to perform various kinds of work, and since the prime mover and the pump are operated by one unit, there is an economic effect that energy savings can be achieved and facility investment costs can be reduced. 2) Each work can be selected by changing the direction of the three-way cock, which is convenient for handling and use. 3) Since water can be created while washing, it has a high added value due to the simultaneous function and has a labor-saving effect. 4) Since it can be washed with fresh water after washing with seawater, the washing effect is high.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an apparatus of the present invention.

FIG. 2 is a configuration diagram more specifically expressing the device of the present invention.

FIG. 3 is a configuration diagram of a small and simple seawater desalination apparatus according to a conventional technique.

FIG. 4 is a configuration diagram showing an example of a conventional washing machine using seawater or fresh water.

[Explanation of symbols]

 A Liquid sending device B Reverse osmosis membrane part C Detour D Cleaning part 8 Strainer 12 Prefilter 23 Filter 25 Drinking water tank 54 Fresh water tank

Claims (7)

[Claims] 1. A strainer (8), a prefilter (12), and this prefilter (12) are selectively disposed in order from the seawater side so that drinking water is produced from seawater through a reverse osmosis membrane. A bypass line (C) installed in parallel, a liquid delivery device (A), a reverse osmosis membrane part (B), a fresh water tank (54) selectively communicating with this, and a filter (2
3) A seawater desalination apparatus that is connected to a drinking water tank (25) having an intermediate interposed therebetween, wherein the liquid delivery apparatus (A) and the reverse osmosis membrane section
A washing part (D) can be selectively communicated with (B), while the washing part (D) can be connected to and disconnected from the concentrated water under pressure of the reverse osmosis membrane part (B). A seawater desalination apparatus in which the fresh water tank (54) is connected and can be selectively connected to and disconnected from the suction side of the liquid transfer apparatus (A). 2. The strainer (8) and the prefilter (1)
2. The seawater freshwater according to claim 1, wherein a system from 2), a liquid sending device (A), a reverse osmosis membrane part (B), and a drinking water tank (25) through a filter (23) is selected. Method of use of water purification equipment for drinking water production. 3. A strainer (8) and a prefilter (1)
The fresh water production for cleaning of a seawater desalination apparatus according to claim 1, wherein a system leading to the fresh water tank (54) through 2), the liquid sending device (A) and the reverse osmosis membrane part (B) is selected. Usage for water. 4. A system in which seawater is pressure-fed from the strainer (8) to the cleaning section (D) by the bypass (C) directly via the liquid delivery device (A) is selected. Of using the seawater desalination equipment in Japan for washing with seawater. 5. The fresh water of the seawater desalination apparatus according to claim 1, wherein a system is selected in which the fresh water from the fresh water tank (54) is pressure-fed to the cleaning section (D) via the liquid feeding apparatus (A). How to use for cleaning work. 6. The strainer (8) and a prefilter (1)
2), the liquid-sending device (A), while performing the clean fresh water for cleaning consisting of a system that goes through the reverse osmosis membrane part (B) to the fresh water tank (54), the reverse osmosis membrane part (B) Concentrated water under pressure is added to the cleaning unit.
The method of using the seawater desalination apparatus according to claim 1, wherein the washing operation is performed by sending the liquid to (D). 7. The strainer (8) and a prefilter (1)
2) and the liquid feeding device (A), the reverse osmosis membrane portion (B), while performing drinking water fresh water consisting of a system that goes through the filter (23) to the drinking water tank (25), the reverse osmosis membrane The method of using the seawater desalination apparatus according to claim 1, wherein concentrated water under pressure in the section (B) is sent to the cleaning section (D) to perform the cleaning operation.