JPH02233190A - Supersonic wave apparatus for cleaning and flush-removal - Google Patents

Abstract

PURPOSE:To prevent air from dissolving by an upper high temperature layer and improve cleaning and flush-removing efficiency by cavitation in a lower low temperature layer by circulating upper and lower high and low temperature layers of water in separate circulating systems while keeping prescribed high and low temperature ranges. CONSTITUTION:A water circulating system for water in an upper high temperature layer and a water circulating system for water in a lower low temperature layer are installed separately in a cleaning tub 1 having a supersonic oscillator 2. The water in high temperature layer enter a heating tub 7 having a heater 6 through a circulating pipe 5 to be heated to a certain temp. and then enters a circulating pump 8, and returned to the original high temperature layer H through a filter. Meanwhile, the water in a low temperature layer L enters a vacuum degassing tub 13 through a circulating pipe 12, and then cooled by a cooling apparatus, and returned to the original low temperature layer L through a circulation pump 16 and a filter 17. By this way, a stable low temperature zone is formed and since circulating water is under degassed condition, effective cavitation is generated at the time of supersonic wave radiation.

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention relates to an ultrasonic cleaning and deburring device, and more specifically, the invention relates to an ultrasonic cleaning and deburring device. This paper relates to an improvement in a device that separates water emitted into upper and lower high-temperature layer waters, and in particular to a device that forms a region of low-temperature layer water as a stable sharp air zone in the lower part. [Prior Art] As is well known, when cleaning or deburring workpieces using ultrasonic waves, it is said that the more cavitation occurs in the cleaning liquid to which ultrasonic waves are emitted, the better the cleaning and deburring effects will be. There is. Experiments have confirmed that in order to produce better cavitation, it is desirable that the cleaning solution into which the workpiece is placed is under a sharp air condition. More specifically, it is desirable to aerate as much as possible the dissolved gases contained in the cleaning liquid that have a lower boiling point than the cleaning liquid. Therefore, the present applicant has previously proposed some of these degassing means. That is, in the case of the technique shown in Patent Application No. 184568 of 1988, a boiling tank is used as the aeration means, and the cleaning liquid aerated by the boiling tank is caused to flow into the upper part of the cleaning tank to form a high temperature zone, Next, by immersing the work in this cleaning tank, the cleaning liquid overflows by the volume of the work, and this is returned to the lower part of the cleaning tank to form a low temperature zone.

[Problem to be solved by the invention]

According to the above conventional technology, the dissolved gas is degassed by the tank and the overflow cleaning liquid is sent to the lower low temperature zone, so cavitation is better generated when ultrasonic waves are radiated, and the cleaning and deburring effects are significant. It was confirmed that Moreover, since there is a tank that enters from the boiling tank and forms a high temperature zone, this high temperature zone prevents gas from dissolving into the low temperature zone, so that the aerated state is better maintained.

However, when the present applicant used this degassing device and used water as the cleaning liquid to clean and deburr the workpiece, there were several problems that needed to be solved.

The remarkable point is that in the case of water, the difference in specific gravity due to temperature difference is slight, so when forming a section into an upper high temperature layer and a lower low temperature layer in the cleaning tank, it is difficult to clearly distinguish them using the above method. It is. For this reason, a phenomenon occurred in which both the function of preventing gas dissolution in the upper high-temperature layer and the function of optimal cavitation generation under degassing conditions in the lower low-temperature layer could not be utilized effectively. However, due to the recent demand for prevention of air pollution caused by fluorocarbons, the importance of using water as a cleaning liquid is increasing, so a better means of forming an upper high-temperature layer and a lower low-temperature layer is to use water. It has been demanded. [Object] Therefore, the object of the present invention is to provide an ultrasonic cleaning and deburring device using water as a cleaning liquid, which divides the water layer into an upper high temperature layer and a lower low temperature layer. Needless to say, it is desirable to provide a means for forming the upper and lower layers more clearly.

Therefore, even though water is used as the cleaning liquid, gas dissolution in the upper high temperature layer water can be better prevented, and the cleaning and deburring effects can be more fully achieved through cavitation in the lower low temperature layer water which is under a completely deaerated state. Ultrasonic cleaning,
To provide deburring equipment.

[Means to solve problems]

In order to achieve the above purpose, the tree invention has the following technical means. That is, this invention will be explained using the reference numerals in the attached drawings that correspond to the embodiments. , the water is divided into an upper high-temperature layer H and a lower low-temperature layer L, the high-temperature layer H has the function of preventing gas from dissolving in the water of the lower low-temperature layer L, and the lower low-temperature layer L has the function of preventing gas from dissolving in the water of the lower low temperature layer L. W washing,
In an ultrasonic cleaning and deburring device having a function as a deburring area; having a water circulation system for the upper high temperature layer H and a water circulation system for the lower low temperature layer L that are independent of each other; The formation water circulation system includes a heating tank 7 in which a heater 6 is installed inside a circulation pipe 5 connected between one part of the washing tank in which upper high temperature formation water is stored and another part, a circulation pump 8, and a filtration filter 9. The lower low temperature layer water circulation system includes a vacuum deaeration tank 13, a cooler 15 and a circulation pump in a circulation pipe 12 connected between one part of the washing tank where the lower low temperature layer water is stored and the other part. This is an ultrasonic cleaning and deburring device characterized by having a filtration filter 16 and a filtration filter 17 installed therein. [Function] With the above configuration, the upper and lower hot water layers H and L are circulated by mutually independent circulation systems to maintain a predetermined high or low temperature range, so that the cleaning liquid Even if water is used as the liquid, the high-temperature layer H and the low-temperature layer L can be clearly distinguished. That is, the high temperature layer water first enters a heating tank 7 having a heater 6 via a high temperature layer water circulation system and is heated to a constant temperature. The water then enters a circulation pump 8, where oil, sewage components, etc. are removed by a filtration filter 9, and then returned to the water region of the high-temperature layer H. Therefore, dissolution and contamination of gases with a boiling point lower than that of water are prevented. On the other hand, water in the low temperature layer L first enters the vacuum degassing tank 13 via the water circulation system of the low temperature layer L;
There, the dissolved gas is aerated under vacuum, then cooled by a cooler 15, passed through a circulation pump 16, oil and other wastewater components are removed by a filtration filter 17, and then returned to the water in the low-temperature layer L. Since this is a deaerated state, good cavitation occurs when ultrasonic waves are radiated, and the workpiece is cleaned and deburred.
In this way, high and low temperature water are circulated separately and maintained at high and low temperatures separately, so that a stable low temperature water zone is formed.

〔Example〕

Next, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Reference numeral 1 indicates a cleaning tank, and 2 indicates an ultrasonic vibrator. A side tank 4 that communicates with the cleaning tank 1 through a circumferential port 3 is integrally attached to the side of the approximately middle portion of the cleaning tank 1. It is being done. Water as a cleaning liquid is stored in the cleaning tank 1, and this water is divided into an upper high temperature layer H and a lower low temperature layer L. That is, the area is set so that the water entering the four side tanks is in the high temperature layer H. In order to achieve the above-mentioned object in such a device, the present invention is made as follows. That is, a pipe 5 for the high temperature layer water circulation system is installed between the bottom of the side tank 4 on one side containing the high temperature layer H and the bottom of the side tank 4 on the other side, and heaters 6 are sequentially installed in the pipe 5 from upstream. A heating tank 7, a circulation pump 8, and a filtration filter 9 are installed. Bypass pipes 11 having bypass valves 10 are connected in parallel upstream and downstream of the circulation pump 8. On the other hand, a pipe 12 of a low temperature layer circulation system is connected between one side and the other side of the cleaning tank 1 portion in the area where the low temperature layer L is contained. A vacuum degassing tank 13 having a heater 6, a suction filter 14, a cooler 15, a circulation pump 1B, and a filtration filter 17 are disposed in this pipe 12 in this order from upstream. Furthermore, a suction port 18 is provided in the upper part of this cleaning tank l, and a configuration is adopted in which water vapor sucked in from this port is guided to a condenser 20 via a pipe 19, and the liquid condensed here is condensed via a pipe 21. The air is returned to the hot tank 7, and an intake blower 22 is connected to the condenser 20. The gas sucked in from the vacuum pump 23 provided above the vacuum degassing tank 13 is returned to above the liquid in the side tank 4 via the pipe 24, and is sucked in through the suction port 18.

In the figure, 25 indicates a refrigerator, and W indicates a workpiece to be cleaned or deburred.

Based on the above configuration, the cleaning and deburring operations of the workpiece W will be explained. The work W is immersed into the lower low temperature layer L. Here, cavitation occurs in the water due to ultrasonic radiation from the ultrasonic vibrator 2, and the workpiece W is cleaned and deburred. In the above, it is desirable that the temperature of the lower low temperature layer L is 20 to 30°C, and the temperature of the upper high temperature layer H is about 65 to 100°C. In particular, the upper high temperature layer H is circulated through the pipe 5, the heating #fj 7, the circulation pump 8, and the filtration filter 9 into the high temperature layer H, and in this process, the heating tank is heated to a predetermined high temperature. Heater 6 of 7
maintained by heating. And independently of this, the lower low temperature layer L is circulated through the pipe 12 through the vacuum degassing tank 13, the suction filter 14, the cooler 15, the circulation pump 16, and the filtration filter 17, and in this process, a predetermined amount of The temperature is maintained at a low temperature by cooling with a cooler 15. In this way, the upper and lower high and low temperature layers H and L are clearly separated from each other. Therefore, the effect of preventing gas from dissolving into the lower low temperature layer L by the upper high temperature layer H is maintained, and the cavitation generation under degassing conditions by the lower low temperature layer L and the resulting cleaning and deburring effects are maintained satisfactorily. Thus, the water vapor from the upper high temperature layer H is taken in through the suction port 18, liquefied in the condenser 20, and returned to the heating tank 7. Similarly, it occurs in the vacuum degassing tank 13, and the vacuum pump 23
The water vapor taken in is also taken in from the suction port 18. In addition, the temperature and deaeration state of the lower low temperature layer L can be controlled by the bypass flow rate using the pipe 26.

〔effect〕

As described above, according to the present invention, since water with low pollution is used as the cleaning liquid, it can be made pollution-free, and the cleaning liquid of this water can be clearly divided into upper and lower high and low temperature layers H and L. This is because the upper high-temperature layer H and the lower low-temperature layer L can be circulated individually and independently maintained within a predetermined temperature range. Therefore, it is possible to effectively prevent air dissolution due to the upper high temperature layer H, and to effectively prevent cavitation from occurring due to the low temperature layer L serving as the lower aeration zone. Therefore, cleaning and deburring effects are improved.

[Brief explanation of the drawing]

FIG. 1 of the attached drawings is a system diagram of an apparatus showing an embodiment of the present invention, in which H indicates the upper high temperature layer, L indicates the lower low temperature layer, 5 indicates the water circulation system pipe of the high temperature layer, and 12 indicates the low temperature layer. This is a pipe in the water circulation system.

Claims (4)

[Claims] (1) It has a cleaning tank 1 and an ultrasonic transducer 2 for emitting ultrasonic waves to the water in the cleaning tank 1, and the water is divided into an upper high temperature layer H and a lower low temperature layer L, and The high-temperature layer H has a function of preventing gas from dissolving in the water in the lower low-temperature layer L, and the lower low-temperature layer L has the function of cleaning the workpiece W, ultrasonic cleaning and deburring, and functions as a deburring area. The apparatus has a water circulation system for the upper high temperature layer H and a water circulation system for the lower low temperature layer L that are independent of each other, and the upper high temperature layer water circulation system includes a cleaning tank in which the upper high temperature layer water is stored. A heater 6 is installed in the circulation pipe 5 connected between one part and the other part.
The lower low temperature layer water circulation system is connected between one part of the washing tank in which the lower low temperature layer water is stored and the other part. An ultrasonic cleaning and deburring device characterized in that a vacuum deaeration tank 13, a cooler 15, a circulation pump 16, and a filtration filter 17 are arranged in a circulation pipe 12. (2) At the top of the cleaning tank 1, there is a steam inlet 18 and an intake pipe 19.
, a condenser 20 is provided, and the water vapor evaporated from the water in the upper high temperature layer H is liquefied in the condenser 20, and the condensed liquid is returned to the heating tank 7 in the upper high temperature layer water circulation system. The ultrasonic cleaning and deburring device according to claim 1, characterized in that: (3) The water vapor generated from the vacuum degassing tank 13 disposed in the lower low temperature layer water circulation system is returned to the upper part of the cleaning tank 1 and is taken in from the suction port 18. The ultrasonic cleaning and deburring apparatus according to claim 1. (4) A pipe 26 is connected downstream of the vacuum deaeration tank 13 of the lower low temperature layer water circulation system to allow the water in the lower low temperature layer L in the cleaning tank to directly flow in without going through the vacuum deaeration tank 13. The ultrasonic cleaning and deburring device according to claim 1, characterized in that: