JPH0454819Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The invention is used in various chemical industries that use liquids, such as plating equipment for IC lead frames that uses plating liquid containing surfactants. The present invention relates to a liquid supply device that is used to return the plating liquid that has passed through the plating part to a reserve tank or the like while suppressing the entrapment of bubbles.

BACKGROUND TECHNOLOGY In the chemical industry, for example, when pouring a liquid into a storage tank, if foaming or air entrapment is extremely inconvenient, a liquid path is provided that is inclined to the liquid level to prevent the liquid from flowing down slowly. In some cases, it is configured so that it enters the liquid surface. Needless to say, if even the slightest amount of foaming is not allowed, the angle of inclination of the liquid path is preferably made very gentle so that the liquid flows down very slowly.

Problems to be Solved by the Invention However, with the above configuration, when trying to pour a large amount of liquid into the liquid storage tank in a short time without foaming, it is necessary to configure the slope angle of the liquid path to be gentle. In order to be able to introduce a large amount of liquid, it is necessary that the cross-sectional area of the liquid passage be large. Furthermore, if the angle of inclination is made gentler, the length of the liquid path increases accordingly, and thus the conventional configuration results in a large-scale device, which is very inconvenient in terms of space.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a liquid supply device that has a simple configuration and can flow a large amount of liquid into a liquid storage tank while preventing foaming. purpose.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a liquid guide member that guides the liquid flowing out from the liquid processing device into the liquid storage tank below from the part on the liquid processing device side. The curved surface was formed so that the slope gradually became gentle toward the part that came into contact with the inside of the tank, and the surface was made to be almost parallel to the liquid level near the level of the collected liquid.

Effect With the above configuration, the liquid flowing out from the liquid processing device is greatly accelerated and flows down at the steeply sloped part in the first half of the liquid guide member, and the direction of the flow is determined by the level of the liquid that has already accumulated at the subsequent gentle sloped part. The flowing liquid is deflected in a direction almost parallel to the flow, and the flowing liquid is smoothly discharged onto the accumulated liquid.

Examples Examples of the present invention will be described below. The liquid supply device in this example is used in a partial plating device for IC lead frames, and is used to return the plating liquid flowing out from the plating area to the lower reserve tank to prevent foaming. It is.
In the figure, 1 is a reserve tank for storing the plating liquid 2, 3 is a plating part in which the lead frame is accommodated, and 4 is a pump for feeding the plating liquid 2 in the reserve tank 1 to the plating part 3. . Reference numeral 5 designates a guide plate whose base is fixed to the outlet of the plating part 3 and guides the plating liquid from the plating part 3 into the reserve tank 1, and has a total length of about 1 m. The guide plate 5 is constructed by curving a vinyl chloride plate, and the base part 6 on the side of the plating liquid supply part is greatly curved, and at the end there is a straight part 7 which is a long straight line. It is formed. The liquid level of the plating liquid 2 in the reserve tank 1 is adjusted to be constant at all times, and in this embodiment, it is set at a height approximately 50 cm below the liquid outlet 8 of the plating part 3. There is. The height of the guide plate 5 is set so that its straight part 7 is slightly below the level of the plating liquid 2, and its slope is such that the angle A between the horizontal plane and the guide plate at the point of contact 9 with the liquid level is approximately It is set to be within 10°.

The plating liquid for operating the pump 4 is sucked from the reserve tank 1 as shown by the arrow, passes through the plating section 3, and flows out from the liquid outlet 8. The outflowing plating liquid flows down on the guide plate 5, but since the angle of inclination is very steep at the base of the guide plate 5, the plating liquid flows down at a very high speed. The angle of approach of the falling plating liquid is deflected by the curve formed in the guide plate 5, and it smoothly enters the plating liquid that has already accumulated at a very gentle angle. Although the falling plating liquid flows at a very high speed, it intersects with the plating liquid that has already accumulated at a very gentle angle, so the plating liquids do not collide violently, and the air Biting hardly occurs.

In this embodiment, the guide plate 5 is fixed, but if the height of the plating liquid changes to some extent, it should be adjusted so that the approach angle of the plating liquid does not exceed about 20°. Therefore, it is necessary to make the slope of the guide plate 5 itself gentle. for that purpose,
It is preferable to make the base of the guide plate 5 rotatable and to attach a float made of foamed resin or the like to the guide plate 5 so that the guide plate 5 floats in the plating liquid at an appropriate depth.

Effects of the invention As described above, the present invention provides a liquid processing device by forming a curved surface on the liquid guide member so that the slope gradually becomes gentle from the root part to the part that comes into contact with the liquid already accumulated in the liquid storage tank. Even though the liquid flowing out of the . Even if a large amount of liquid is poured in a short period of time, almost no air will be trapped. With this configuration, a large amount of liquid can be poured into the liquid storage tank in a short period of time without foaming using a very simple device.
It has become possible to significantly improve the performance of various processing processes that use liquids that do not allow air to be mixed in.
Its practical effects are significant.

[Brief explanation of the drawing]

The figure is a sectional view of a lead frame partial plating device using a liquid supply device according to an embodiment of the present invention. 1... Reserve tank, 3... Plating part, 4...
...Pump, 5...Guide plate, 6...Root, 7...
...Straight section, 8...Liquid outlet.

Claims (1)

[Scope of utility model registration request] It has a liquid guide member that guides the liquid flowing out from the liquid processing section to the liquid storage tank, and is characterized in that the liquid guide member is formed with a curved surface so as to have a gradual gentle slope from the liquid processing section side to the tip side. liquid supply device.