JP2006175333A - Method and apparatus for cleaning deformed member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of cleaning a deformed member, typically a molded rubber hose difficult to clean because of bending, efficiently and reliably and an apparatus allowing automatization of cleaning work which has been based essentially upon manual work. <P>SOLUTION: The method of cleaning a deformed member has the first process S1 of charging a deformed member to be cleaned into a cleaning vessel, the second process S2 of evacuating the closed cleaning vessel, the third process S3 of pouring cleaning water into the cleaning vessel, the fourth process S4 of cleaning the deformed member, the fifth process S5 of draining the cleaning water from the cleaning vessel and the final process S7 of taking out the deformed member from the cleaning vessel and, if necessary, carrying out the sixth process S6 of evacuating the cleaning vessel to dry the deformed member after the fifth process S5. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for cleaning deformed members typified by variously bent molded rubber hoses such as a radiator hose and a vacuum hose of a vehicle, and a cleaning device suitably used for the cleaning method.

  A molded rubber hose is formed by inserting an unvulcanized rubber hose into a mandrel, vulcanizing and then pulling it out of the mandrel. As the release agent such as glycol is applied to the outer surface of the mandrel and the mandrel, the main purpose is to wash off the release agent after molding, or the purpose of removing foreign matter and dust remaining in the rubber hose, Cleaning with water or warm water is performed (Patent Document 1).

  However, if the bent molded rubber hose is simply put into the washing tank in which the water is stored, an air pool is likely to be generated at the bent portion, so that it is difficult to fill the molded rubber hose with the cleaning water. In order to reduce the accumulation of air during such cleaning, attempts have been made to rotate and vibrate the molded rubber hose that has been added by generating a water flow in the cleaning tank or stirring the cleaning tank. In the case of a rubber hose, the air reservoir often moves only in the molded rubber hose and cannot be completely removed, and a required cleaning result cannot be obtained. Therefore, in order to clean the inner wall surface of the molded rubber hose evenly, it is necessary to rely on manual work, and there is no actual effective cleaning method.

  Such a difficulty in cleaning is not limited to the case of a molded rubber hose having a bent portion as described above. Similarly, a bent tube made of metal or synthetic resin having various bent portions, or complicated unevenness or This is generally true for various deformed members such as molded products having through holes.

Japanese Patent No. 2757038 (second column, line 16 to third column, line 5)

  The present invention has been made in view of the above circumstances, and the object of the present invention is to provide a method for efficiently and reliably cleaning deformed members typified by molded rubber hoses that are bent and difficult to clean. It is another object of the present invention to provide an apparatus capable of automating a cleaning operation that has been conventionally relied on a manual operation.

  In order to solve the desired problem, in the present invention, as a method for cleaning the deformed member, first, a first step of putting the deformed member to be cleaned into the cleaning tank, and a first step in which the sealed cleaning tank is evacuated. 2 steps, a third step of pouring cleaning water into the cleaning tank, a fourth step of cleaning the deformed member, a fifth step of draining the cleaning water in the cleaning tank, and a final step of taking out the deformed member from the cleaning tank It was set as the cleaning method which consists of a process.

  In this cleaning method, the inside of the cleaning tank in which the deformed member is accommodated is sealed, and the cleaning water is injected after the vacuum state is established. Therefore, no matter what the bent portion exists in the molded rubber hose, for example, air is trapped inside. Can be reliably prevented. In the washing tank, rotating blades and turntables with external power are provided so that the deformed member contained in the washing water can be agitated and vibrated, and a casing or an ultrasonic vibration device that rotates vertically or horizontally is installed. It is desirable to provide or provide an external circulation path that generates a water flow in the washing water.

  The cleaning water can be used for normal materials, hot water, hot water, mixed water of cleaning agents, etc., the material of the deformed parts to be cleaned, and the type of target substances to be washed away (for example, mold release agents in the case of molded rubber hoses). Can be selected accordingly.

  Further, after the fifth step in the cleaning method, by performing a sixth step of drying the deformed member again by evacuating the inside of the cleaning tank, for example, the molded rubber hose bent in multiple stages is dried without leaving cleaning water. It becomes possible. The cleaning tank may be provided with a device for circulating hot air inside the sealed cleaning tank, and this hot air circulation is performed before the sixth step in which vacuum drying is performed, thereby cleaning the deformed member. It is possible to prevent various inconveniences caused by the temperature drop that occurs during vacuum suction by performing rough drying of the water and heating in the washing tank at the same time.

  Next, in the deformed member cleaning apparatus according to the present invention, the deformed member to be cleaned can be accommodated and taken out by opening and closing the lid so that the above-described cleaning method can be efficiently performed. And a drainage port and an outside air introduction valve, and a cleaning device comprising a sealable cleaning tank connected to a vacuum pump.

  The washing tank is configured so that, for example, a mesh container containing a large number of molded rubber hoses can be loaded and unloaded, so that a large amount of molded rubber hoses can be washed at a time. Needless to say, the water injection port and the drain port provided in the cleaning tank are configured to be opened and closed by the open / close valves, respectively, and by selectively opening and closing each open / close valve and the outside air introduction valve, the inside of the cleaning tank is evacuated, Wash water injection storage, drainage, and vacuum drying will be performed.

  In the washing tank, a washing water circulation path is provided outside, and a circulation pump is provided in the middle of the circulation path, so that a water flow can be generated in the washing water filled in the washing tank. In such a circulation path of the washing water, an opening / closing valve is interposed at a connection portion with the washing tank, and an opening / closing operation of each opening / closing valve generates a water flow in the washing tank and returns to a sealed state.

  Furthermore, in the cleaning device for a deformed member according to the present invention, the cleaning water storage tank disposed above the cleaning tank is connected to the water inlet of the cleaning tank, while the drainage storage tank disposed below the cleaning tank is connected to the cleaning tank drainage. By connecting the drainage storage tank and the washing water storage tank with a return water channel provided with a water return pump and a filter, the cleaning water was reused. In this device, the cleaning water is efficiently flowed only by opening and closing the opening / closing valve interposed between the tanks by arranging the cleaning water storage tank, the cleaning tank, and the drainage storage tank in this order in the vertical direction. There is also an advantage that can be made.

  According to the cleaning method of the present invention, a deformed member represented by a molded rubber hose that is bent and difficult to clean the inner wall surface can be efficiently and reliably cleaned to every corner. Moreover, by draining again after washing water is discharged in a vacuum state, the steps from charging into the washing tank to drying can be performed consistently without taking out the deformed member from the washing tank.

  In the cleaning apparatus according to the present invention, the cleaning from the deformed member to the drying can be performed consistently only by the selective opening / closing operation of each on-off valve and the outside air introduction valve, so that the cleaning operation can be automated. it can. In addition, the circulation pump provided outside the washing tank can generate a water flow in the washing water filled in the washing tank in a watertight manner, and a more reliable washing effect can be obtained. Furthermore, by arranging the washing water storage tank, the washing tank, and the drainage storage tank in this order from the top, the washing water can be efficiently flowed only by the opening / closing operation of the opening / closing valve interposed between each tank, By providing a return channel from the drainage storage tank located to the washing water storage tank located at the uppermost stage, it is possible to reuse the cleaning water and save the cleaning water.

  Hereinafter, a method and apparatus for cleaning a deformed member according to the present invention will be described with reference to the drawings. FIG. 1 is a process diagram showing only main processes in the method for cleaning a deformed member according to the present invention, and these processes can be carried out extremely smoothly by using a sealable cleaning tank described in detail later. it can.

  First, in the first step S1, a deformed member to be cleaned is placed in the cleaning tank. The loading operation into the washing tank is preferably performed for each container in a state of being accommodated in a mesh container or the like in order to facilitate the subsequent removal operation. Next, as the second step S2, after the cleaning tank is sealed, the vacuum state is realized by sucking the air in the cleaning tank with a vacuum pump or the like, and the process proceeds to the cleaning water pouring operation as the third process S3. The cleaning water injection operation is performed by connecting the cleaning water supply pipe to the water injection port of the cleaning tank and opening the on-off valve that closes the water injection port. The washing water is injected until the washing tank is filled.

  Subsequently, after the cleaning operation as the fourth step S4 is performed, a fifth step S5 for draining the cleaning water is performed. Effluent water can be easily drained by connecting the drain pipe to the drain of the washing tank, opening the open / close valve that closes the drain, and introducing external air into the washing tank. can do.

  After draining the cleaning water filled in the cleaning tank, it is possible to perform natural or forced drying by another process while taking out the object to be cleaned as a final process S7. As shown, if the sixth step S6 for drying the object to be cleaned is performed by evacuating the cleaning tank again after the fifth step S5, the drying step is performed without taking out the object to be cleaned. Can be done consistently.

  FIG. 2 is a front view showing an example of the irregular member cleaning apparatus according to the present invention, FIG. 3 is a plan view of the apparatus, and FIG. 4 is a left side view of the apparatus. The cleaning apparatus 1 of this example can seal the cleaning water storage tank T1 whose upper surface is open at the top to the middle after constructing a three-stage rack-shaped main body frame by assembling L-section steel (angle material) The cleaning tank W and the drainage storage tank T2 whose upper surface is open at the bottom are respectively assembled.

  Two water injection ports W1 and W1 are provided on the top surface side of the cleaning tank W, and each is connected to the bottom surface of the cleaning water storage tank T1 through cleaning water injection valves 11 and 11. . On the other hand, two drain outlets W2 and W2 are provided on the bottom surface side of the cleaning tank W, and the pipes hanging from each lead to the drainage storage tank T2 through drain valves 12 and 12. Then, on the bottom surface side of the drainage storage tank T2, a return water channel 22a for returning the used cleaning water to the cleaning water storage tank T1 for reuse, and a final for draining the used cleaning water out of the apparatus. A drainage channel 23 is connected.

  As shown in FIGS. 3 and 4, the return water passage 22a is branched into two bypass pipes 221 and 222 in front of the water return pump P3, and one filter F and F is provided in the middle of each branch pipe. Is provided. The reason why the two filters F and F are used in this way is that the convenience of replacement of clogging can be achieved by selectively using one of the filters F. The bypass pipes 221 and 222 join again immediately before the water return pump P3, and a return water passage 22b suspended upward from the water return pump P3 extends into the wash water storage tank T1.

  The supply of cleaning water to the cleaning device 1 of this example is performed by a supply pipe 21 connected to city water such as industrial water or a dedicated cleaning water supply device. The supply pipe 21 includes a first supply pipe 211 that reaches the wash water storage tank T1 via the first supply valve 131 and a second supply pipe 212 that reaches the drainage storage tank T2 via the second supply valve 132. Branched. The structure that can supply unused washing water to the drainage storage tank T2 is to ensure smooth circulation of the washing water by adding additional water at an early stage to the washing water that naturally decreases in the washing process, and thus for the washing work. This is to prevent useless waiting time, and is particularly effective when adjusting the temperature of the cleaning water.

  However, water level sensors T11 and T21 for managing the amount of water stored in each of the wash water storage tank T1 and the drain water storage tank T2 are provided outside, and the water temperature for managing the temperature of the wash water in each storage tank. Sensors T12 and T22 are provided.

  The cleaning water is heated by water vapor introduced from the outside of the apparatus through the steam pipe 31. That is, the steam pipe 31 includes a first steam pipe 311 that reaches the wash water storage tank T1 via the first steam valve 141, and a second steam pipe 312 that reaches the drain water storage tank T2 via the second steam valve 142. At the tips of the first and second steam pipes 311 and 312, an ejection pipe 313 having a large number of steam ejection holes is extended along the bottom of each water storage tank ( (See FIG. 3). The reason why steam can be introduced not only into the washing water storage tank T1 but also into the drainage storage tank T2 is that the cleaning water reused through the return water channel is adjusted at an early stage so that the cleaning work can be performed. This is to prevent useless waiting time.

  The cleaning tank W of this example is a rectangular parallelepiped that is long in the back direction and includes a sealing lid W5 that opens and closes on the front side by hinges W7 provided at two upper and lower positions on the left side, and the sealing lid W5 is closed. In this case, the structure can be firmly fixed by the lock devices W6 provided at four places in the vertical and horizontal directions. A vacuum pump P1 is arranged on the right side of the cleaning tank W, and the vacuum pump P1 and the cleaning tank W are connected by a pipe 41 having a vacuum valve 15 in the middle. A circulation pump P2 is disposed below the vacuum pump P1, and a first circulation path 51 that includes a first circulation valve 161 and reaches the rear side of the cleaning tank W, and A second circulation path 52 that includes the two circulation valves 162 and reaches the front side of the cleaning tank W is connected to each other. Therefore, if the first and second circulation valves 161 and 162 are opened and the circulation pump P2 is operated in a state where the cleaning tank W is filled with the cleaning water, the cleaning water in the cleaning tank W is provided outside. Since the first and second circulation paths 51 and 52 and the cleaning tank W are moved, a water flow can be generated in the cleaning tank W.

  In addition, as shown in FIG. 4, a water level sensor W8 is also provided outside the washing tank W so that the water level of the washing water can be sensed, and the washing tank W is washed after the washing operation is completed. An outside air introduction valve 6 used when draining water is provided.

  FIG. 5 and FIG. 6 are process diagrams showing an operation procedure when the deformed member is cleaned using the cleaning apparatus configured as described above. FIG. FIG. 6 shows the process from operation to completion. The symbols S1, S2a,... Attached to the respective steps in the figure correspond to the symbols S1 attached to the main steps in the cleaning method according to the present invention shown in FIG.

  First, the sealing lid W5 of the cleaning tank W in the cleaning apparatus according to the present invention is opened, and the washing basket containing the object to be cleaned is set in the cleaning tank W (S1). Next, after closing the sealing lid W5 (S2a), the vacuum valve 15 is opened and the vacuum pump P1 is operated to bring the cleaning tank W into a high vacuum state (S2b). When the vacuum state is confirmed, the vacuum pump P1 is stopped and the vacuum valve 15 is closed, and the sealing lid is locked by the four locking devices W6 (S2c). After reconfirming the locked state, the cleaning water injection valves 11 and 11 are opened, and the cleaning water stored in the cleaning water reservoir T1 is injected into the cleaning tank W from the injection ports W1 and W1 (S3). . The water injection state is monitored by the water level sensor W8, and when the water filling state is reached, the cleaning water injection valves 11 and 11 are closed and cleaning is started (S4). The cleaning time is appropriately set according to the state of the cleaning object and is monitored by timer measurement. During the cleaning, the first and second circulation valves 161 and 162 are opened as described above, and the circulation pump P2 is operated to generate a water flow in the cleaning tank W.

  When a predetermined cleaning time has elapsed, the circulation pump P2 is stopped, the first and second circulation valves 161 and 162 are closed, and the operation proceeds to the drainage of the cleaning water. The drainage of the washing water is performed by opening the outside air introduction valve 6 in the washing tank W and opening the two drain valves 12, 12 so that the washing water filled in the washing tank W is discharged into the drain outlet W2, This is performed by pouring from W2 to the drainage storage tank T2 (S5). The drainage state is monitored by the water level sensor W8, and after confirming that the drainage is completely completed, the two drainage valves 12 and 12 are closed, and the process proceeds to the next high vacuum drying (S6).

  If necessary, hot air is circulated in the washing tank W as a previous step, and then the vacuum valve 15 is opened again, and the vacuum pump P1 is operated to perform high vacuum drying (S6). The drying time is measured by a timer, and after the time that the object to be cleaned is sufficiently dried, the vacuum pump P1 is stopped, the vacuum valve 15 is closed and the sealing lid W5 is opened (S7a). (S7b), a series of cleaning operations are completed.

  On the other hand, the cleaning water drained and stored from the cleaning tank W to the drainage storage tank T2 is returned to the cleaning water storage tank T1 while high vacuum drying (S6) is performed in the cleaning tank W ( S8) It will be reused for the next cleaning step. Returning water is performed by operating the return pump P3, and the wash water from which dust and the like are removed by the filter F through the return pipe 22a connected to the bottom surface of the drainage storage tank T2 through the bypass pipes 221 and 222. It is led to the washing water storage tank T1 through the return water channel 22b. The water storage volume is monitored by the water level sensor T21 in the drainage storage tank T2 and the water level sensor T11 in the washing water storage tank T1, and when sufficient washing water is not secured even by returning water from the drainage storage tank T2. Then, the first or second supply valve 131 or 132 is opened to perform additional water injection.

It is process drawing which showed only the main processes in the cleaning method of the deformed member which concerns on this invention. It is the front view which showed an example of the washing | cleaning apparatus of the deformed member based on this invention. It is a top view of the apparatus. It is a left view of the same device. It is process drawing which shows the operation procedure of the apparatus, and has shown until the time of completion | finish of washing | cleaning. It is process drawing which shows the operation procedure of the apparatus, and shows from draining of washing water to completion of work.

Explanation of symbols

6 Outside air introduction valve
11 Wash water injection valve
12 Drain valve
13 Final drain valve
15 Vacuum valve
21 Supply pipe
22a, 22b Return channel
23 Final drainage channel
31 Steam piping
41 Piping
51 1st circuit
52 Second circuit
131 First supply valve
132 Second supply valve
141 First steam valve
142 Second steam valve
161 First circulation valve
162 Second circulation valve
211 First supply pipe
212 Second supply valve
221, 222 Bypass pipe
311 First steam pipe
312 Second steam pipe
313 Jet pipe F Filter P1 Vacuum pump P2 Circulation pump P3 Water return pump T1 Washing water storage tank T2 Drainage storage tank T11, T21 Water level sensor T12, T12 Water temperature sensor W Washing tank W1 Injection port W2 Drainage port W5 Sealing lid W6 Locking device W7 Hinge W8 Water level sensor

Claims (5)

The first step of putting the deformed member to be cleaned into the cleaning tank, the second step of vacuuming the sealed cleaning tank, the third step of injecting cleaning water into the cleaning tank, and cleaning the deformed member A method for cleaning a deformed member, comprising: a fourth step to perform, a fifth step of draining the cleaning water in the cleaning tank, and a final step of removing the deformed member from the cleaning tank. The method for cleaning a deformed member according to claim 1, wherein after the fifth step, a sixth step is performed in which the inside of the cleaning tank is again evacuated to dry the deformed member. A device for cleaning a deformed member comprising a sealable cleaning tank connected to a vacuum pump, which can store and take out a deformed member to be cleaned by opening and closing the lid, and has a water inlet, a drain port and an outside air introduction valve. . 4. The apparatus for cleaning a deformed member according to claim 3, wherein a circulation path for washing water is provided outside the washing tank, and a circulation pump is provided in the middle of the circulation path. The washing water storage tank arranged above the washing tank is connected to the water injection port of the washing tank, while the drainage storage tank arranged below the washing tank is connected to the washing tank drain port, and further provided with a water return pump and a filter. The apparatus for cleaning a deformed member according to claim 3 or 4, wherein the drainage storage tank and the washing water storage tank are connected by a return channel.

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