JPH0670802U - Floating blade type defoaming device - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention changes the liquid quality with respect to foam generated on the liquid surface of a tank used for foaming cooling liquid used for machine tools or other general foaming liquid. First, it is an object of the present invention to provide a device in which the effervescent liquid can be used without anxiety, because the device is made compact or the bubbles are broken and gradually defoamed without adversely affecting the environment. The floating vane type defoaming device of the present invention floats a floating vane 5 that follows in a constant floating state on the liquid surface of a tank used for foaming liquid, for example, a motor 11 with a speed reducer integrated therein.
The low speed rotation of the rotary drive plate 7 is transmitted to the vertical rotary drive plate 7 through the coupling 9 and the joint 8.
Is slowly passed through a hole 6 having a rectangular cross section perpendicular to the center of the floating blade 5 and slowly rotated.
It is characterized by being a defoaming device that gradually defoams.

Description

[Detailed description of the device] [0001]     [Industrial applications]   The present invention is applicable to a foaming cooling liquid used for machine tools or other general foaming liquids. Comparing the device without changing the liquid quality against the foam generated on the liquid surface of the used tank Gradual defoaming by blasting or rupturing without adversely affecting the environment Therefore, it is a device that can use the foaming liquid with confidence. [0002]     [Prior art]   As a defoaming method, conventionally, a method of chemically adding an antifoaming agent, or Forced by heating (electric heater) 22 and pump 23 as shown in FIG. The physical methods such as filtration 24, other radiation irradiation, high frequency vibration, spark, etc. Was commonly known. However, either method causes some troubles and eliminates them. I couldn't.   [0003]       [Problems to be solved by the device]     In order to improve the workability, the cooling fluid for machine tools has an increasing permeability. It is generated when additives are mixed and general effervescent liquids such as those related to fermentation are used. The amount of foam becomes more and more tough, and it is becoming more difficult to break it. . As a result, a foam layer that floats on the liquid surface accumulates and does not overflow from the tank and pollute the floor surface. Which disorders were frequent. Unlike the liquid level detection, the detection of these bubbles is There are few suitable ones, but those that are expensive, suitable and low cost None, bubble breaking is becoming more difficult. Therefore, as these defoaming means, Instead, a chemical defoaming agent may be considered, but in this case, the liquid will deteriorate, and With defoaming, there are many problems and problems that cannot be realized in terms of cost, space, environment, etc. Had occurred. [0004]     [Means for Solving the Problems]   The present invention was made to solve the above-mentioned problems, and is used in machine tools. On the liquid surface of the tank used for foaming cooling liquid or other general foaming liquid. Floating stirrer blades that stir and rotate, and a constant floating state due to vertical fluctuations of the liquid surface It is a floating vane type defoaming device that is equipped to follow. [0005]     [Work]   For example, a cross-shaped floating blade floating on the coolant surface has a hole with a rectangular cross section in the center. It is clear that there is a belt-shaped rotary drive plate with the same cross section that penetrates this hole with a margin. It is inserted vertically, and the upper end of this rotary drive plate is, for example, a decelerated electric motor. It is connected to the rotary drive. Therefore, a slow rotational drive from this driver 、 When given to the floating blade, this floating blade is always constant in the vertical fluctuation of the cooling liquid level. While following the levitating state, stir and rotate at a low speed. [0006]   Therefore, some of the bubbles that float between the floating blades are Some may be discharged from here by stirring and rotating, but due to slow rotation, foam is generated. Most of them stayed between the blades due to the surface tension of Ruptured bubbles, and those attached to the surface of the blade with the same surface tension as the above on the rear surface of the blade, Some are torn and pulled by the bubbles that have been compressed and shrunk by the trailing blades. While these phenomena are continuously repeated, the bubbles gradually disappear. [0007]     【Example】   The floating vane type defoaming device of the present invention is used for a coolant tank of a machine tool using a coolant. The embodiment used will be described with reference to FIG.   Cooling liquid 2 is stored in the cooling liquid tank 1, and bubbles 4 are generated on the liquid upper surface 3. There is. Then, on this liquid surface, the cross-shaped stirring floating blades 5 are used to cover a part of the vertical surface of the blades. It is raised above the liquid surface. This floating blade 5 has a hole 6 with a rectangular cross section in the center. Is vertically penetrated, and the rotary drive plate 7 is vertically penetrated with a margin in this hole 6. It The upper end of the rotary drive plate 7 is connected via a joint 8 and a coupling 9. Connected to a speed reducer-integrated electric motor 11 mounted on a bracket 10 . [0008]   Therefore, the low-speed rotation of the speed reducer-integrated electric motor 11 causes the coupling 9 and the joint. The floating blade 5 is slowly rotated via the rotary drive plate 7 and the rotary drive plate 7. Then the liquid surface 3 The bubbles 4 of the floating blades 5 are combined with the adhesion due to the surface tension of the vertical surface of the floating blade 5, and bubbles on the advancing side. A part of the foam 4 is crushed, and on the other side, a part of the foam 4 is also broken or torn. It is gradually defoamed. [0009]     [Effect of device]   According to the floating vane type defoaming device of the present invention, the defoaming of the conventional defoaming means Deterioration of liquid quality by chemical means using agents, heating, filtration, irradiation, high frequency High costs due to wave vibration, physical means such as sparks, expansion of space, or environment Use the effervescent liquid because it can gradually defoam without fear of adversely affecting With regard to the liquid of machinery and general industrial equipment, it is possible to operate these with confidence. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state in which a floating vane type defoaming device according to an embodiment of the present invention is applied to a foamed cooling liquid tank. FIG. 2 shows a conventional physical defoaming means. Explanatory drawing of some examples [Explanation of symbols] 1 ... Coolant tank 7 ... Rotation drive plate 3 ... Liquid upper surface 8 ... Joint 4 ... Foam 9 ... Coupling 5 ... Floating blade 11 ... Integrated electric motor

Claims (1)

[Claims for utility model registration] [Application 1] Floating blades for stirring are floated on the liquid surface of the tank used for the foaming cooling liquid used for machine tools or other general foaming liquid, It was equipped to follow the vertical movement of the liquid surface in a constant floating state.
Floating blade type defoaming device.