JPS627406A - Apparatus for separating fluid - Google Patents

Abstract

PURPOSE:To develop sufficient separation characteristics at low pressure having the almost same level as household tap water and to simplify the flow control of a conc. fluid while attaining the wt. reduction and compactness of the titled apparatus, by providing a flow control throttle means to the outflow port of the conc. fluid to dispense with a pressure pump. CONSTITUTION:The fluid A to be treated introduced from the introducing port 1 directly connected to a spout of tap water is separated by a spiral type membrane element 4 and the transmitted conc. fluid C is taken out from a discharge port 9 through a water gathering pipe 5 having a hole 12. The conc. fluid is discharged as conc. water B from an outflow port 8 through a flow control throttle means 11. Hereupon, if the fluid A to be treated is tape water, the separation action of the fluid by the membrane element 4 and the security of the quantity of transmitted water are enabled only by the pressure of tap water without requiring a special pressure apparatus such as a pressure-up pump and pressure resistant strength can be sufficiently kept even if a container 3, end plates 2, 10 and piping members are made of an inexpensive member such as polyvinyl chloride.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for separating fluids by reverse osmosis and ultra-flushing.

In more detail, this article relates to a small permeate flow fluid separation device for household and research purposes.

[Prior art] Reverse osmosis, ultrafiltration method applies pressure higher than osmotic pressure to the fluid to be treated by the action of a semi-permeable membrane, separation of ions from fluid to be treated, removal of bacteria and fine particles, etc. Since it is possible to remove dissolved substances and concentrate without the need for heating, it can be used for desalination of seawater, production of ultrapure water, reuse of wastewater, and production of concentrated liquids that are useful in the food industry. Numerous applications are possible, and the scope of its industrial use is wide.

Particularly from the viewpoint of energy saving, it is recommended for use in large-scale systems that require a relatively large amount of permeate fluid, such as desalination of seawater, desalination of canned water, and IC manufacturing for electronic components. This is a fluid separation method that is actually in increasing demand.

On the other hand, small-scale systems such as household water purification equipment, cleaning equipment for research experiments, water spray equipment, etc. that use small permeate fluids require special pressurizing devices such as pressurizing pumps due to the principle of reverse osmosis. Therefore, the piping as ancillary equipment, the container that supports the membrane element, etc. must also have an appropriate pressure-resistant structure. Furthermore, since a valve and a flow ffi meter are required to control the flow rate of the concentrated fluid, there are problems in that the cost and running cost of the device increase and the shape of the device becomes unwieldy.

Although it is well known that reverse osmosis has superior separation characteristics compared to other adsorption methods, it is currently difficult to widely adopt it for consumer use due to the above-mentioned problems.

Therefore, there is a demand for small-sized devices that do not require a special pressurizing device, can operate at low pressure, are compact, and are inexpensive.

[Problems to be Solved by the Invention] The present invention improves these conventional drawbacks, and does not require any special equipment for pressurization, such as a pump, and has sufficient separation characteristics at a pressure as low as that of domestic water flow. The present invention aims to provide a minute A device that shows this, simplifies the flow rate control of the concentrated fluid, and is designed to reduce the cost and make the H7f more compact.

[Means for Solving the Problems] In order to achieve the above object, the present invention has the following configuration.

In a fluid separation device consisting of an inlet for introducing the fluid to be treated, an outlet for outflowing the concentrated fluid, an outlet for taking out the permeate fluid, a membrane element, and a container that supports the membrane element, a flow rate is applied to the outlet for the concentrated fluid. DESCRIPTION OF THE PREFERRED EMBODIMENTS A fluid separation device characterized in that a controlling throttle means is shown in detail.'' The present invention will be described in more detail below with reference to the drawings.

FIG. 1 shows a cross section of one embodiment of the separation apparatus of the present invention, in which 1 is an inlet for the fluid to be treated, 2 is an end plate of a container having the inlet, 3 is a container, and 4 is a membrane element. ,5
is a collection pipe for the permeate fluid, 6 is a blind stopper of the water collection pipe, 7 is a sealing member that seals the container and the membrane element, 8 is a concentrated fluid outlet, 9 is an outlet for taking out the permeate fluid, 10 is a concentrated fluid flow The end plate 11 of the container having an outlet and a permeate outlet is a restriction means for controlling the flow rate of the concentrated fluid.

The fluid A to be treated is introduced through the inlet 1 through the membrane element 4 (the element is, for example, a channel material for the fluid to be treated,
The fluid is separated by the action of a spiral membrane made of a channel material for permeated fluid (preferably used is a spiral type membrane 1 to 1), and the permeated fluid hole is a water collection pipe 5 having 12 holes.
The permeated fluid C is taken out from the outlet 9 through the permeate.

On the other hand, the fluid concentrated in the permeable substance is discharged as concentrated water B from the outlet 8 through the restricting means 11 for controlling the flow rate. As the flow rate control throttle means 11, a flow rate control throttle plate or the like is preferably used.

Now, if the fluid A to be treated is general tap water, there is no need for a special pressurizing device, such as a boost pump, and only the tap water pressure, for example, a pressure of 1.5 to 5 to 9/-, is applied to the membrane niremen 1 to 5. Since the fluid separation effect and the amount of permeated water are within the range that is possible for a small system, the inlet can be connected directly to the pipe.

Of course, in the present invention, 1.5 to 5 ki/af
There is no problem in using a pump with a pressure of r.

Therefore, container 3, end plate 2.10. For other piping materials, it is not necessary to use FRP, stainless steel plates, and pressure-resistant piping materials used in devices that utilize reverse osmosis; low-cost materials such as vinyl chloride or ABS resin have sufficient pressure resistance. It is possible to maintain In addition, the container 3 and the end plates 2 and 10
may be fixed by a screw method or by an adhesive method.

Furthermore, the flow rate control aperture disk 11 provided in the outlet 8 preferably used in the present invention is capable of obtaining a constant flow rate regardless of pressure fluctuations of the fluid A to be treated, so that the amount of concentrated water can be quantified. valves, such as stop valves,
Pole valves, cocks, and flowmeters such as rotameter equipment are no longer required, simplifying the equipment and reducing costs.
You can measure the fall. . That is, the flow rate can be adjusted at the outlet of the device.

In the present invention, the inlet 1 of the device or its extension pipe is preferably structured so that it can be directly connected to a water faucet. In such a structure, the tip of the inlet 1 may be fixedly attached to a water faucet, or it may be attached with a removable adjustment like the water outlet of an automatic domestic washing machine. good.

As described above, the main feature of the present invention is that in a fluid separation device for reverse osmosis and ultrafiltration, the inlet port is directly connected to the low pressure pipe line without the need for a special pressurizing device, and the inlet is not affected by pressure fluctuations. It is necessary that a constant flow restricting means that is not used is connected to the concentrated fluid outlet.

[Example] Next, a detailed explanation will be given with reference to examples.

Example 1 Using the device shown in Fig. 1, the pressure at the inlet 1 was directly connected to an industrial water pipe having a pressure of 3 ki/g, and the outlet 8 had a hole diameter Q of 5 m.
A water flow test was carried out by controlling the concentration flow rate to 400 ml/min using a squeeze plate having a diameter of 100 m.

The membrane element 4 installed inside the device has an outer diameter of 58 mm.
It has a spiral shape with a length of 430 mm and an effective semipermeable membrane area of 1 m2, and the overall size of the device is 76 m in external diameter.
m, and the length was 500 mm.

Using the above apparatus, a permeated water loss of 120 m1/min was obtained from the outlet hole 9. Its ion concentration decomposition characteristics are shown in Table 1, and it was a desirable pure water.

] The pure water obtained in the table above can be used as spray water for ultrasonic humidifiers, which requires a relatively small amount of fresh water, or as drinking water with a storage tank, cleaning water, etc. Ta.

[Advantageous Effects of the Invention 1] By using this device, the following merits (-) are produced.

■ No pressure pump is required, and the use of low-pressure components reduces equipment costs and running costs.

■ By using a diaphragm to control the flow of concentrated fluid, conventional valves and flowmeters are no longer necessary, making it possible to reduce equipment costs and operating costs.

■ It is now possible to convert the device from 1 to 1.

As described above, the present invention aims to provide a compact system as an extremely practical fluid separation device.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of one embodiment of the separation device of the present invention. 1: Inlet port 3: Container 4: Membrane element 8: Outlet port 9: Outlet port 11: Squeezing means Δ: 98% fluid B: Concentrated fluid C: Permeated fluid

Claims (2)

[Claims] (1) An inlet for introducing the fluid to be treated, an outlet for outflowing the concentrated fluid, an outlet for taking out the permeate fluid, a membrane element,
A fluid separation device comprising a container supporting the membrane element, characterized in that a condensed fluid outlet is equipped with a flow rate control restricting means. (2) The fluid separation device according to claim (1), wherein the fluid inlet to be treated has a structure that allows direct connection to a water pipe.