JPH0356316Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a water purifier.
The present invention relates to a water purifier suitable for regenerating used water used as a machining fluid, for example, as a machining fluid.

(Prior Art) For example, pure water is often used as machining fluid in electric discharge machining equipment, especially wire-cut electric discharge machining equipment.
Generally, tap water is obtained by passing it through a water purifier containing an ion exchange resin or the like. Conventional water purifiers used for this purpose have a cylindrical container filled with ion exchange resin and sealed, with a water injection pipe for injecting the water to be regenerated and the ion exchange resin used for regeneration. An output pipe is provided to take out the purified water. Here, the end of the water injection pipe inside the cylindrical container is arranged at a level above the ion exchange resin layer, and the end of the output pipe inside the cylindrical container is arranged at a level below the ion exchange resin layer. .

(Problem to be solved by the invention) This conventional water deionizer is made up of an ion exchange resin stored in a sealed cylindrical container as described above, so the water to be treated is passed through the water injection pipe. When water is poured into a cylindrical container, small air bubbles mixed with the water to be treated accumulate in the upper part of the cylindrical container, and the performance of the upper part of the ion exchange resin layer inside the cylindrical container deteriorates due to the air. This has the problem that the life of the water purifier is halved.

The purpose of the present invention is to provide an improved water purifier that can solve the above-mentioned problems in the prior art.

(Means for solving the problem) The features of the present invention for solving the above problems are as follows:
A case containing an ion exchange resin, an injection pipe provided above the case for injecting the liquid to be treated into the case, and pure water obtained by being treated with the ion exchange resin. and an output pipe provided in the case to take out the gas from the case, the upper part of the output pipe provided in the case to discharge the gas accumulated in the upper part of the case to the outside. It is provided with a small hole with a small opening area that does not make it impossible to take out pure water from the output pipe.

(Operation) When the liquid to be treated is injected into the case through the injection pipe, the injected liquid is converted into pure water by the ion exchange resin, and is taken out to the outside via the output pipe. Air mixed with the liquid injected into the case through the water injection pipe accumulates upwards within the case, but is released to the outside through a small hole provided inside the case at the top of the output pipe. . This results in
It is possible to prevent the ion exchange resin from coming into direct contact with air, etc.

(Example) Hereinafter, the present invention will be explained in detail with reference to the illustrated example.

The drawing shows a partial cross-sectional view of an embodiment of the water purifier according to the present invention. The water purifier 1 has a casing 3 filled with an ion exchange resin 2,
A water injection pipe 4 is provided in the upper part of the casing 3. The water injection pipe 4 is for injecting water from the outside to be treated by the water purifier 1 into the casing 3, and its tip 4a is formed of the ion exchange resin 2. Ion exchange resin layer 5
It is located near the top of the . Tip 4 of water injector 4
The water to be treated, supplied from a, permeates into the ion exchange resin layer 5 and reaches the bottom of the casing 3, during which time the water to be treated is made into pure water by the action of the ion exchange resin 2.

An output pipe 6 is provided at the top of the casing 3 in order to take out the pure water accumulated at the bottom of the casing 3 to the outside of the casing 3. The tip 6a of the output pipe 6 extends to near the bottom of the casing 3, and the pure water accumulated at the bottom of the casing 3 flows through the output pipe due to the difference between the water pressure in the water injection pipe 4 and the water pressure in the output pipe 6. 6 and can be taken out to the outside via the output pipe 6.

The water to be treated is transferred to the casing 3 via the water injection pipe 4.
When the water is injected into the casing 3, air that mixes with the water to be treated and enters the casing 3 accumulates in the casing 3, preventing the air layer formed by this air from reaching the ion exchange resin layer 5. For this purpose, a small hole 7 is provided in the wall of the output tube 6 inside the casing 3. This small hole 7 is formed at an appropriate position near the upper end of the casing 3 and above the ion exchange resin layer 5, and has a diameter of 0.1 (mm).
It is determined by the degree.

Therefore, if air enters the casing 3 when the water to be treated is injected into the casing 3 via the injection pipe 4, the air will be drawn into the upper part of the casing 3. In the normal operating state of the water purifier 1, the inside of the casing 3 is filled with water from the water injection pipe 4, and the ion exchange resin layer 5 is not exposed to air. The air that enters the casing 3 along with the water to be treated through the water injection pipe 4 is collected above the casing 3, but since the output pipe 6 is provided with a small hole 7, the air enters the upper part of the casing 3. The accumulated air is appropriately discharged to the outside through the small holes 7, and the ion exchange resin layer 5 never comes into contact with air, so that its life can be significantly extended.

Note that when the amount of water to be treated that is injected through the water injection pipe 4 is increased, water flows out from the small hole 7, but the opening area of the small hole 7 is such that the water flows out from the small hole 7. The value is set to a small enough value (in the example shown, the hole is 0.1 (mm) in diameter) that does not adversely affect the extraction of pure water from the output pipe 6. does not cause any inconvenience at all.

(Effects of the invention) According to the invention, as described above, a small hole is formed above the inner part of the casing of the output pipe with a small opening area that does not make it impossible to take out pure water from the output pipe. Since this is provided, it is possible to effectively prevent air from accumulating in the water purifier, and therefore, the life of the water purifier can be greatly extended compared to conventional water purifiers.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the water purifier according to the present invention. 1... water purifier, 2... ion exchange resin, 3...
Casing, 4... Water injection pipe, 5... Ion exchange resin layer, 6... Output pipe, 7... Small hole.

Claims (1)

[Scope of utility model registration request] A case containing an ion exchange resin, an injection pipe provided above the case for injecting the liquid to be treated into the case, and pure water obtained by being treated with the ion exchange resin. and an output pipe provided in the case for taking out the water from the case,
In order to discharge gas accumulated in the upper part of the case to the outside, a small opening area is provided at the upper part of the output pipe in the case so as not to make it impossible to take out pure water from the output pipe. A water purifier characterized by having small holes.