JP7049298B2 - Cleaning device for the object to be cleaned and method for cleaning the object to be cleaned using the device - Google Patents

Description

The present invention is to be cleaned with a cleaning liquid, for example, parts of construction machinery, vehicle parts such as automobiles, parts of various machine tools, machined parts such as gears and screws, and parts of aircraft. In particular, the cleaning device for the object to be cleaned and the cleaning device for the object to be cleaned that can automatically perform the aerial cleaning and the in-liquid cleaning of the object to be cleaned in two stages. The present invention relates to a method of cleaning an object to be cleaned using this.

Conventionally, for cleaning objects to be cleaned such as vehicle parts such as automobiles and parts of various machine tools, an aerial cleaning method is mainly used in which the objects to be cleaned are cleaned in the air with a cleaning liquid sprayed from a nozzle using a cleaning device. (See Patent Documents 1 to 6).

That is, the cleaning device for the object to be cleaned described in Patent Documents 1 to 6 accommodates the object to be cleaned such as vehicle parts in a metal cleaning car, and is inside the cleaning car from a nozzle arranged around the washing car. The cleaning liquid is sprayed toward the object to be cleaned to clean the object to be cleaned in the air, and the dirt such as oil and solids adhering to the object to be cleaned is removed by the air cleaning. ..

On the other hand, in addition to the above-mentioned air cleaning method, there is an in-liquid cleaning method for cleaning the object to be cleaned while the object to be cleaned is immersed in the cleaning solution using a cleaning device (see Patent Documents 7 to 9). ).

That is, in the cleaning device for the object to be cleaned described in Patent Documents 7 to 9, a metal cleaning basket containing the object to be cleaned such as vehicle parts is immersed in the cleaning liquid in the cleaning tank, and the cleaning liquid is discharged from the nozzle in this state. Is sprayed to generate a water flow in the cleaning tank to wash the object to be cleaned in the liquid, and the cleaning in the liquid removes dirt such as oil and solids adhering to the object to be cleaned. ing.

Jikkai Sho 51-040169 Jitsukaisho 55-147891 Jitsukaisho 57-1987 Gazette Jitsukaisho 57-152984 Jikkenhei 04-022081 Gazette Japanese Unexamined Patent Publication No. 06-09145 Japanese Unexamined Patent Publication No. 06-343931 Japanese Unexamined Patent Publication No. 07-256221 Japanese Unexamined Patent Publication No. 10-13626

However, since the above-mentioned cleaning device that performs aerial cleaning has a strong jet of cleaning liquid ejected from the nozzle, it has a high cleaning ability and is easy to remove dirt such as oil and solids adhering to the object to be cleaned. There is a problem that the cleaning liquid sprayed from the nozzle does not hit the object to be cleaned, and the dirt such as oil and solids adhering to the object to be cleaned cannot be completely removed.

In the cleaning device that performs aerial cleaning, the number of nozzles is increased or the cleaning basket and nozzles are rotated in order to reduce the number of places where the cleaning liquid from the nozzles does not hit. The number of parts of the cleaning device itself increases and the structure becomes complicated. Moreover, in the case of a structure in which the washing car and the nozzle are rotated, the rotation driving part of the table for rotating the washing car and the rotation driving part of the nozzle are located outside the washing tank, so that the rotation driving motor forming the rotation driving part is formed. A shaft sealing device is required to transmit power into the cleaning tank. As a result, the cleaning device that performs aerial cleaning has a problem that the number of parts is large, the number of maintenance points is large, and the cost is high.

Further, in a cleaning device that performs aerial cleaning, the nozzle diameter is reduced in order to increase the power of spraying the cleaning liquid from the nozzle, but in this case, there arises a problem that foreign matter is easily clogged in the nozzle. ..

Further, in a washing device that performs aerial washing, in order to wash the object to be washed in the washing car from the radial direction of the washing car, it is necessary to make the side surface of the washing car mesh-like. The strength of the washing car is reduced, it becomes difficult to obtain the strength to lift the washing car, and the objects to be washed must be individually put into the washing car placed in the washing tank, which increases the working time. Problems occur.

On the other hand, since the above-mentioned cleaning device for performing in-liquid cleaning cleans the object to be cleaned contained in the cleaning basket in a state of being immersed in the cleaning solution, the entire surface of the object to be cleaned can be cleaned, but the cleaning solution from the nozzle is used. Since the water flow generated by the injection of the above is weaker than the injection flow ejected from the aerial cleaning nozzle, there is a problem that the cleaning ability is lower than that of the aerial cleaning.

The present invention has been made to solve the above-mentioned problems, and the object to be cleaned can be washed in the air and in the liquid in two stages, and the cleaning ability can be significantly improved. The main purpose is to provide a cleaning device of the above and a method of cleaning an object to be cleaned using the same.

In order to achieve the above object, the cleaning device for an object to be cleaned according to the present invention has a cleaning tank in which a cleaning liquid is stored and an upper surface that is supported in the cleaning tank and has a drain port for lowering the water level. A bottom tubular cleaning drum and a tubular cleaning basket that is airtightly supported and placed on the upper end of the cleaning drum and has a net-like bottom surface for accommodating objects to be cleaned, are arranged in the cleaning tank. A cleaning device for an object to be cleaned, comprising a submersible pump and a cleaning nozzle that injects the cleaning liquid supplied from the submersible pump toward the object to be cleaned in the cleaning basket, wherein the drainage of the cleaning drum is provided. The opening area of the mouth is characterized in that the amount of the cleaning liquid sent from the submersible pump is set to be larger than the amount of the cleaning liquid drained from the drain port.

The cleaning nozzle is arranged on the inner wall surface of the lid of the cleaning tank provided with a lid that can be opened and closed upward, and the cleaning liquid is sprayed from the cleaning nozzle toward the object to be cleaned in the cleaning basket. Is preferable.

It is preferable that the cleaning nozzle is arranged in the cleaning drum so that the cleaning liquid is sprayed from the cleaning nozzle toward the object to be cleaned in the cleaning basket.

The method for cleaning the object to be cleaned according to the present invention is the method for cleaning the object to be cleaned using the cleaning device for the object to be cleaned according to any one of claims 1 to 3, wherein the object to be cleaned is housed. A step of setting the washing car on the washing drum in the washing tank and storing the washing liquid in the washing tank in an amount that the submersible pump can operate and the washing car is not immersed in the washing liquid. A step of operating a submersible pump to inject a cleaning liquid from the cleaning nozzle toward the object to be cleaned in the cleaning car to perform aerial cleaning of the object to be cleaned in the cleaning car, and the step of injecting from the cleaning nozzle. The cleaning liquid is sequentially accumulated in the cleaning drum and the cleaning basket, the object to be cleaned in the cleaning cage is completely immersed in the cleaning liquid, and the cleaning is performed by the water flow generated by the injection of the cleaning liquid from the cleaning nozzle. The step of submerged cleaning of the object to be cleaned in the car and the operation of the submersible pump are stopped, and the cleaning liquid in the cleaning drum and the cleaning car is drained into the cleaning tank from the drain port of the cleaning drum. It is characterized by including a step of draining the object to be washed in the washing basket.

The cleaning device for an object to be cleaned according to the present invention includes a submersible pump arranged in a cleaning tank, a bottomed tubular cleaning drum having a drain port for lowering the water level and an open top surface, and an airtight state at the upper end of the cleaning drum. It is equipped with a tubular cleaning basket with a net-like bottom surface that is supported and placed on the surface to be cleaned, and a cleaning nozzle that sprays the cleaning liquid supplied from the submersible pump toward the cleaning object in the cleaning cage. , The opening area of the drain port of the cleaning drum is set so that the amount of cleaning liquid sent from the submersible pump is larger than the amount of drainage of the cleaning liquid drained from the drain port of the cleaning drum. Cleaning and in-liquid cleaning can be automatically performed in two stages, and the cleaning ability can be significantly improved as compared with a cleaning device that performs air-in-air cleaning and in-liquid cleaning alone.

The method for cleaning an object to be cleaned according to the present invention includes a step of aerial cleaning of the object to be cleaned in the cleaning basket and a step of immersing the object to be cleaned in the cleaning basket in a cleaning liquid to clean the object to be cleaned in the liquid. Therefore, the cleaning ability can be significantly improved as compared with the cleaning method in which the air cleaning or the liquid cleaning is performed alone.

It shows the cleaning apparatus of the object to be cleaned which concerns on one Embodiment of this invention, and is the perspective view in the state which the lid is open. Similarly, the cleaning device for the object to be cleaned is shown, and the same perspective view as in FIG. 1 in a state where the cleaning tank and the like are transparent. Similarly, it is a vertical sectional front view of a cleaning device for an object to be cleaned. Similarly, the cleaning device for the object to be cleaned is shown, and it is a perspective view in a state where the cleaning basket is removed and the lid is opened. It is also a perspective view of a cleaning nozzle used in a cleaning device for an object to be cleaned. It is a vertical sectional view of the swivel joint of a cleaning nozzle. Similarly, it is explanatory drawing which shows the use state of the cleaning apparatus of the object to be cleaned.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the following embodiments.

1 to 4 show a cleaning device 1 for an object to be cleaned according to an embodiment of the present invention, and the cleaning device 1 is, for example, a vehicle part such as an automobile, a part of various machine tools, and machining of gears, screws, and the like. The object to be cleaned, such as the parts to be cleaned and the parts of an aircraft, is cleaned with the cleaning liquid W, and the cleaning in the air and the cleaning in the liquid can be automatically performed in two stages.

That is, as shown in FIGS. 1 to 4, the cleaning device 1 for the object to be cleaned has a cleaning tank 2 in which the cleaning liquid W is stored and an upper surface supported in the cleaning tank 2 and having a drain port 3a for lowering the water level. A bottomed tubular cleaning drum 3 with an open bottom, a tubular cleaning basket 4 that is airtightly supported and placed on the upper end of the cleaning drum 3 and has a net-like bottom surface for accommodating objects to be cleaned, and cleaning. A pair of the submersible pump 5 arranged in the tank 2 and the cleaning liquid W supplied from the submersible pump 5 rotatably supported by the injection reaction force of the cleaning liquid W while injecting the cleaning liquid W toward the object to be cleaned in the cleaning basket 4. The cleaning nozzles 6 and 6'are provided, and the opening area of the drain port 3a of the cleaning drum 3 is such that the amount of water sent from the cleaning liquid W from the submersible pump 5 is larger than the amount of drainage of the cleaning liquid W drained from the drain port 3a. It is set to increase.

Specifically, as shown in FIGS. 1 to 4, the cleaning tank 2 has a tank body 7 formed in a box shape whose upper surface is opened by a metal plate and a shallow box shape whose lower surface is opened by a metal plate. A lid 8 that is formed on the upper end of the back wall of the tank body 7 and is rotatably attached upward by a plurality of hinges 42 to open and close the upper opening of the tank body 7, and both side walls of the tank body 7. A pair of opening and closing dampers 9 that are interposed between both sides of the lid 8 to hold the lid 8 in an open position and open and close the lid 8 with a light force, and the upper end of the front wall of the tank body 7. A locking tool 10 interposed between the portion and the front portion of the lid 8 to lock the lid 8 in a closed state, and a handle 11 for opening and closing the lid 8 provided on the front portion of the lid 8. And a plate-shaped heat insulating material 12 attached to the outer surface of the tank body 7 excluding the outer surface of the upper end portion of the tank body 7.

Further, in the cleaning tank 2, a rod-shaped heater 13 for heating the cleaning liquid W stored in the cleaning tank 2 to a predetermined temperature (for example, 50 ° C. to 70 ° C.) and an old cleaning liquid W in the cleaning tank 2 are charged. A drain valve 14 for discharging to the outside and a water level hose 15 for checking the water level in the washing tank 2 are provided.

The washing tank 2 is placed and fixed on a washing tank stand 17 provided with a plurality of casters 16 so that the washing tank 2 can be moved to an arbitrary place.

As shown in FIGS. 1 to 3, the cleaning drum 3 is formed in a circular bottomed cylinder whose upper surface is opened by a metal plate, and the cleaning drum stand 18 provided on the upper surface of the bottom wall of the cleaning tank 2. It is placed and fixed in a horizontal position.

Further, a plurality of drainage ports 3a for lowering the water level are formed at the lower end of the peripheral wall of the cleaning drum 3 at equal angles, and the opening areas of the plurality of drainage ports 3a are such that the cleaning liquid W is sent from the submersible pump 5. The amount of water is set to be larger than the amount of drainage of the cleaning liquid W drained from all the drainage ports 3a.

Further, on the outer peripheral surface of the peripheral wall of the cleaning drum 3, a long plate-shaped cleaning car guide 19 for positioning the cleaning car 4 described later while guiding the cleaning drum 3 with respect to the cleaning drum 3 is provided at equal angles. .. By providing the cleaning car guide 19 on the outer peripheral surface of the cleaning drum 3, the cleaning car 4 is supported and placed on the upper end of the cleaning drum 3 with its axis aligned with the axis of the cleaning drum 3. ing.

In the above embodiment, a plurality of drainage ports 3a for lowering the water level are formed at the lower end of the peripheral wall of the cleaning drum 3 at equal angles. The position to be formed is not limited to that according to the above embodiment, and may be any number and position as long as all the cleaning liquid W in the cleaning drum 3 can be drained. For example, in another embodiment, only one drain port 3a may be formed at the lower end of the peripheral wall of the cleaning drum 3, or one or a plurality of drain ports 3a may be formed on the bottom wall of the cleaning drum 3. Alternatively, one or a plurality of drainage ports 3a may be formed on both the lower end of the peripheral wall and the bottom wall of the cleaning drum 3.

As shown in FIGS. 3 and 7, the washing basket 4 includes a peripheral wall 20 formed in a circular tubular shape by a metal plate, a lattice-shaped reinforcing body 21 provided at the lower end opening of the peripheral wall 20, and a reinforcing body 21. A circular net 22 that is supported and fixed on the upper surface of the crane and on which objects to be cleaned such as vehicle parts are placed, a long plate-shaped reinforcing rib 23 provided on the outer peripheral surface of the peripheral wall 20 at equal angles, and a peripheral wall 20. A plurality of inverted U-shaped hanging metal fittings 24 provided at equal angles on the upper end portion are provided, and a wire rope can be hooked on the hanging metal fittings 24 so that the hanging work can be performed by a crane or the like.

As shown in FIGS. 2 and 4, the submersible pump 5 is arranged on the bottom surface of a corner in the cleaning tank 2, is attached to a vertically oriented motor (not shown) and a lower portion of the motor, and is rotated by the motor. It is provided with a pump 5a in which the impeller is rotatably housed in the pump casing, a cooling jacket case 5b for forming a cooling jacket around the motor, and the like. In the present embodiment, the submersible pump 5 is a low-pressure submersible pump 5 having a discharge pressure of about 0.1 MPa to 0.3 MPa.

Thus, in the submersible pump 5, when the motor is started with the pump 5a immersed in water, the impeller of the pump 5a is rotated by the motor, and the impeller of the pump 5a is rotated into the pump casing from the suction port formed in the pump casing. Water is sucked, and the sucked water is discharged from the discharge port formed in the pump casing. Further, the water discharged from the discharge port of the pump 5a is discharged from the drain port of the cooling jacket case 5b after cooling the motor through the cooling jacket formed around the motor.

In the submersible pump 5, the nipple 25 and the cheese pipe 26 are sequentially connected to the drain port of the cooling jacket case 5b, and by connecting the two water supply hoses 27 and 28 to the cheese pipe 26, the submersible pump 5 is connected. The cleaning liquid W can be supplied in two directions from the above.

The cleaning nozzles 6 and 6'inject the cleaning liquid W supplied from the submersible pump 5 toward the object to be cleaned in the cleaning basket 4, and rotate in a horizontal posture by the injection reaction force of the cleaning liquid W. It has become. In the present embodiment, as shown in FIGS. 1 to 4, the cleaning nozzles 6 and 6'are arranged on the inner wall surface of the lid 8 of the cleaning tank 2 and in the cleaning drum 3, respectively, and are located above the cleaning basket 4. The cleaning liquid W is sprayed from both the bottom and the bottom toward the object to be cleaned in the cleaning basket 4.

The upper cleaning nozzle 6 is provided at the downstream end of the upper pipe 30 fixed to the inner wall surface of the lid 8 of the cleaning tank 2 via a fixing metal fitting 29, and one of the water supply hoses 27 and cheese. It is connected to the submersible pump 5 via a pipe 26 and a nipple 25.

As shown in FIGS. 1 and 5, the upper cleaning nozzle 6 has a swivel joint 31 that communicates with the submersible pump 5 via a water supply hose 27 and the like, and an arm that is supported by the swivel joint 31 and communicates with the swivel joint 31. The tube 32 is provided with a plurality of nozzle bodies 33 provided in the arm tube 32 and having a nozzle body 33a communicating with the arm tube 32, and the nozzle body 33a of at least one nozzle body 33 is a cleaning nozzle 6. It is formed so that the injection reaction force of the cleaning liquid W can be applied to the cleaning nozzle 6 by injecting the cleaning liquid W along the circumferential direction around the center of rotation of the cleaning nozzle 6.

As shown in FIG. 6, the swivel joint 31 is connected downward to the downstream end of the upper pipe 30, and has a tubular shaft 34 having a flange 34a at the downstream end and a downstream end of the shaft 34. A rotating portion 35 that is rotatably covered around the axis of the shaft portion 34 and is formed in a hollow circular shape that communicates with the arm tube 32 of the cleaning nozzle, and a bolt 36 and a nut on one end surface of the rotating portion 35. It is provided with an annular retaining plate 38 fixed by 37 to prevent the shaft portion 34 from coming off from the rotating portion 35, and bushes 39, 39'interposed between the shaft portion 34 and the rotating portion 35.

Further, the bushes 39, 39'of the swivel joint 31 are formed of ultra-high molecular weight polyethylene having excellent wear resistance, chemical resistance and slipping characteristics. In this embodiment, two bushes 39, 39'with different shapes are used for the bushes 39, 39'. One bush 39 is formed of an annular disk made of ultra-high molecular weight polyethylene, and is interposed between one end surface of the tubular shaft portion 34 and the bottom surface of the recessed portion of the rotating portion 35. The other bush 39'is formed of ultra-high molecular weight polyethylene into a cylindrical shape having a flange at one end, and is between the shaft portion 34 and the inner peripheral surface of the recessed portion of the rotating portion 35, and the shaft portion 34 and the retaining plate. It is interposed between the inner peripheral surface of 38.

The thickness of the two bushes 39, 39'is set between the shaft portion 34 and the disc-shaped bush 39 and between the shaft portion 34 and the tubular bush 39'when the cleaning liquid W flows into the swivel joint 31. It is set so that a gap for water lubrication is formed between the two and the pressure of the cleaning liquid W.

The arm tube 32 is connected to the outer peripheral surface of the rotating portion 35 of the swivel joint 31, and has a linear arm tube 32a (consisting of a short tube, a cheese tube and an elbow) communicating with the rotating portion 35, and an outer peripheral surface of the rotating portion 35. It is provided with a T-shaped arm tube 32b (consisting of a short tube, a cheese tube and an elbow) which is connected to and is arranged on the axis of the linear arm tube 32a and communicates with the rotating portion 35.

Further, the arm tube 32 is provided with a nozzle body 33 having a spout 33a communicating with the arm tube 32. In the present embodiment, the arm tube 32 of the upper cleaning nozzle 6 is provided with four nozzle bodies 33, two at the tip of the linear arm tube 32a and two at the tip of the T-shaped arm tube 32b, respectively. Two nozzle bodies 33 are provided.

The two nozzle bodies 33 at the tip of the linear arm tube 32a and the one nozzle body 33 at the tip of the T-shaped arm tube 32b have the linear arm tube 32a and the T-shape with the spout 33a facing straight down. The other nozzle body 33 at the tip of the T-shaped arm tube 32b is connected to the shaped arm tube 32B in a continuous manner, and the ejection port 33a of the nozzle body 33a is a cleaning solution along the circumferential direction around the center of rotation of the cleaning nozzle 6. It is connected to the T-shaped arm tube 32b in an inclined posture in a continuous manner so that W can be injected.

On the other hand, the lower cleaning nozzle 6'is provided at the upper end of the lower pipe 40 arranged in the cleaning drum 3 and penetrating the center of the bottom wall of the cleaning drum 3, and the other water feeding hose. 28, connected to the submersible pump 5 via a cheese tube 26 and a nipple 25.

The lower cleaning nozzle 6'has the same structure and shape as the upper cleaning nozzle 6, and the ejection port 33a is arranged in the cleaning drum 3 in a posture facing upward. Since the lower cleaning nozzle 6'has the same structure and shape as the upper cleaning nozzle 6 only in a different mounting direction from the upper cleaning nozzle 6, the same members and parts as the upper cleaning nozzle 6 Have the same reference number, and detailed description thereof will be omitted.

In the present embodiment, the upper cleaning nozzle 6 rotates counterclockwise in a plan view, and the lower cleaning nozzle 6'rotates clockwise in a plan view.

Thus, when the upper cleaning nozzle 6 and the lower cleaning nozzle 6'supply the cleaning liquid W to the swivel joint 31 via the water supply hoses 27, 28, etc. by the submersible pump 5, the cleaning liquid W becomes the swivel joint 31. It flows into the arm tube 32 through the inside of the tubular shaft portion 34 and the hollow rotating portion 35, and is ejected from the ejection ports 33a of the four nozzle bodies 33 provided in the arm tube 32 toward the inside of the cleaning basket 4. Will be done.

At this time, in the upper cleaning nozzle 6 and the lower cleaning nozzle 6', one ejection port 33a injects the cleaning liquid W along the circumferential direction around the rotation center of the cleaning nozzles 6 and 6', so that the cleaning nozzles 6 and 6' The injection reaction force of the cleaning liquid W is applied to 6', and the rotating portion 35, the arm tube 32, and the four nozzle bodies 33 rotate around the axis of the tubular shaft portion 34, and the inside of the cleaning drum 3 The cleaning liquid W can be sprayed over the entire area of the above.

Further, the swivel joint 31 of the upper cleaning nozzle 6 and the lower cleaning nozzle 6 ′ includes bushes 39, 39 ′ formed of ultra-high molecular weight polyethylene having excellent sliding characteristics, and has a shaft portion 34 and bushes 39, 39 ′. Since a gap for water lubrication is formed between the cleaning liquid W and the cleaning liquid W, the resistance during rotation of the upper cleaning nozzle 6 and the lower cleaning nozzle 6'is small, and the upper cleaning nozzle 6 and the upper cleaning nozzle 6 and The lower cleaning nozzle 6'can be rotated smoothly and smoothly.

In the above embodiment, four nozzle bodies 33 are provided for each of the upper cleaning nozzle 6 and the lower cleaning nozzle 6', and the direction of the ejection port 33a of one of the nozzle bodies 33 is changed. The number of nozzle bodies 33 and the number of spouts 33a with different directions are not limited to those according to the above embodiment, and the upper cleaning nozzle 6 and the lower cleaning nozzle 6'can be rotated for cleaning. Any number may be used as long as the cleaning liquid W can be sprayed into the car 4.

Further, in the above embodiment, the arm tube 32 of the upper cleaning nozzle 6 and the lower cleaning nozzle 6'is formed from the linear arm tube 32a and the T-shaped arm tube 32b, but in other embodiments, the arm tube 32 is formed. The linear arm tube 32a and the T-shaped arm tube 32b are integrally formed, and the arm tube 32 is inserted through the rotating portion 35 of the swivel joint 31 in a circumferential direction and is located in the rotating portion 35 of the arm tube 32. An opening may be formed in the portion to be used.

Further, in the above embodiment, the nozzle body 33 is connected to the arm tube 32 of the upper cleaning nozzle 6 and the lower cleaning nozzle 6'to form the ejection port 33a, but in other embodiments, the ejection port 33a is formed. , The nozzle body 33 may be omitted, and the ejection port 33a may be formed directly on the arm tube 32.

Further, in the above embodiment, both the upper cleaning nozzle 6 and the lower cleaning nozzle 6'are rotated by the injection reaction force of the cleaning liquid W, but the upper cleaning nozzle 6 and the lower cleaning nozzle 6 are rotated. The cleaning nozzle 6 (6') of both or either of the' may be fixed.

In FIG. 1, 41 is a control panel connected to the submersible pump 5 and the heater 13 to control the submersible pump 5 and the heater 13.

Next, a case where the object to be cleaned such as vehicle parts and machined parts is cleaned by using the above-mentioned cleaning device 1 for the object to be cleaned will be described.

FIG. 7 shows the water level when the cleaning device 1 is stopped and the water level when the cleaning device 1 is operated, and the broken line A in FIG. 7 shows the water level when the cleaning device 1 is stopped. C indicates the water level during operation of the cleaning device 1, the alternate long and short dash line B indicates the water level at which the cleaning liquid W overflows from the cleaning basket 4, and the two-dot chain line C indicates the cleaning liquid W accumulated in the cleaning tank 2. Indicates the water level of.

First, the cleaning basket 4 containing the object to be cleaned is set on the cleaning drum 3 in the cleaning tank 2, and the cleaning liquid W can be operated by the submersible pump 5 in the cleaning tank 2 and the cleaning basket 4 is immersed in the cleaning liquid W. Store only a small amount.

That is, the washing car 4 in the washing tank 2 is lifted by a crane or the like via a hanging metal fitting 24 and moved to the outside of the washing tank 2, and a predetermined amount of the object to be washed is housed in the washing basket 4. After the object to be cleaned is housed in the cleaning basket 4, the cleaning basket 4 is lifted again by a crane or the like and placed on the cleaning drum 3 in the cleaning tank 2.

At this time, since the peripheral wall 20 of the cleaning basket 4 is formed of a metal plate, the strength of the cleaning basket 4 is increased, and the cleaning basket 4 containing the object to be cleaned is lifted by a crane or the like and put into the cleaning tank 2. And the work time can be shortened.

After the cleaning basket 4 containing the object to be cleaned is set in the cleaning tank 2, the cleaning liquid W is stored in the cleaning tank 2 in an amount that the submersible pump 5 can operate and the cleaning basket 4 is not immersed in the cleaning liquid W. That is, the cleaning liquid W is stored in the cleaning tank 2 up to the position of the broken line A in FIG. The position of the broken line A in FIG. 7 is set to a position slightly lower than the position of the ejection port 33a of the lower cleaning nozzle 6'.

In the above embodiment, the cleaning basket 4 containing the object to be cleaned is set in the cleaning tank 2, and then the cleaning liquid W is stored in the cleaning tank 2. However, in other embodiments, the cleaning tank 2 is used. After storing the cleaning liquid W in the cleaning tank 2, the cleaning basket 4 containing the object to be cleaned may be set in the cleaning tank 2.

After the cleaning basket 4 is set in the cleaning tank 2 and the cleaning liquid W is stored, the switch of the operation panel 41 is operated to operate the submersible pump 5, and the heater 13 is activated to heat the cleaning liquid W to a predetermined temperature. ..

When the submersible pump 5 is operated, the cleaning liquid W is supplied to the upper cleaning nozzle 6 and the lower cleaning nozzle 6', and the cleaning liquid W is directed toward the cleaning basket 4 from the outlets 33a of the upper cleaning nozzle 6 and the lower cleaning nozzle 6'. The cleaning liquid W is sprayed. That is, the upper cleaning nozzle 6 and the lower cleaning nozzle 6'inject the cleaning liquid W continuously in the vertical direction and the inclined direction from above and below the cleaning basket 4 toward the inside of the cleaning cage 4. At this time, the upper cleaning nozzle 6 and the lower cleaning nozzle 6'inject the cleaning liquid W toward the inside of the cleaning basket 4 while rotating due to the injection reaction force of the cleaning liquid W injected in the inclined direction.

At the start of operation of the cleaning device 1, the cleaning liquid W passes through the air and directly cleans the object to be cleaned in the cleaning basket 4. Therefore, oil and solid matter adhering to the object to be cleaned are performed. It is possible to cleanly remove dirt such as.

Further, during the operation of the cleaning device 1, the cleaning liquid W is drained into the cleaning tank 2 from the drain port 3a of the cleaning drum 3, but the cleaning liquid W is ejected from the upper cleaning nozzle 6 and the lower cleaning nozzle 6'. Since the amount, that is, the amount of water sent from the submersible pump 5 is larger than the amount of drainage from the drain port 3a of the cleaning drum 3, the cleaning liquid W gradually accumulates in the cleaning drum 3 and the cleaning basket 4, and the cleaning drum 3 is charged. And the water level in the washing basket 4 rises sequentially.

It should be noted that the water level gradually rises with the passage of time, and until the washing basket 4 is full, part of the washing is performed in the air, and part of the washing liquid W is in the liquid for washing the object to be washed while flowing. Cleaning is done.

After a certain period of time has elapsed from the start of operation of the cleaning device 1, the empty cleaning drum 3 and the cleaning basket 4 are filled with the cleaning liquid W, and the cleaning liquid W sequentially overflows from the upper end of the cleaning basket 4. At this time, water flow is generated in the cleaning drum 3 and the cleaning basket 4 by the injection of the cleaning liquid W from the lower cleaning nozzle 6', and the object to be cleaned in the cleaning basket 4 is washed in the liquid. Therefore, the entire surface of the object to be cleaned can be cleaned. Further, at the time of complete in-liquid washing, the water level of the washing liquid W is at the position of the alternate long and short dash line B and the alternate long and short dash line C.

Then, when the cleaning of the object to be cleaned is completed after a predetermined time has elapsed, the operation of the submersible pump 5 and the heater 13 is stopped, and the injection of the cleaning liquid W from the upper cleaning nozzle 6 and the lower cleaning nozzle 6'disappears. Therefore, the washing water in the washing drum 3 and the washing basket 4 is drained into the washing tank 2 from the drain port 3a of the washing drum 3, and the water level of the washing liquid W in the washing tank 2 is the first water level (broken line in FIG. 7). Return to the state of position A).

After that, the washing basket 4 is taken out from the inside of the washing tank 2 to the outside of the washing tank 2 by a crane or the like, and the object to be washed is taken out. Since the temperature of the cleaning liquid W is appropriately adjusted by the heater 13, the temperature of the object to be cleaned is raised by being immersed in the cleaning liquid W during in-liquid cleaning, and the cleaning liquid W is drained after the cleaning is completed. , Drys quickly in the air.

As described above, since the above-mentioned cleaning device 1 for the object to be cleaned can automatically perform the air cleaning and the liquid cleaning of the object to be cleaned in two stages, the air cleaning and the liquid cleaning can be performed independently. The cleaning capacity can be significantly improved as compared with the conventional cleaning equipment performed in.

Further, in the cleaning device 1 for the object to be cleaned, the submersible pump 5 and the cleaning nozzles 6 and 6'are arranged in the cleaning tank 2, and the cleaning nozzles 6 and 6'are rotated by the injection reaction force of the cleaning liquid W. The rotation drive unit of the table that rotates the cleaning basket, the rotation drive unit of the nozzle, and the shaft sealing device are no longer required, the number of parts of the cleaning device 1 itself is reduced, the structure is simplified, the number of maintenance points is reduced, and the cost is reduced. Can be planned. Moreover, since the cleaning nozzles 6, 6'are rotated by the injection reaction force of the cleaning liquid W, even if the cleaning nozzles 6, 6'come into contact with the object to be cleaned and stop, mechanical failure of the motor or the like may occur. There is no need for a protective device or the like.

Further, since the cleaning device 1 for the object to be cleaned includes a tubular cleaning basket 4 having a net-like bottom surface, the strength of the tubular cleaning basket 4 is compared with that of a cleaning basket having a net-like structure as a whole. The cylindrical cleaning basket 4 into which the object to be cleaned is loaded can be lifted by a crane or the like and loaded into the cleaning tank 2, and the working time can be shortened.

Further, since the cleaning device 1 for the object to be cleaned has bushes 39, 39'interlocated between the shaft portion 34 and the rotating portion 35 of the swivel joint 31 of the cleaning nozzles 6 and 6', the cleaning nozzles 6 and 6' 6'can be rotated smoothly. Moreover, since the bushes 39 and 39'are made of ultra-high molecular weight polyethylene, the cleaning nozzles 6 and 6'rotate more smoothly.

1 Cleaning device 2 Cleaning tank 3 Cleaning drum 3a Drain port 4 Cleaning basket 5 Submersible pump 6 Upper cleaning nozzle 6'Lower cleaning nozzle W Cleaning liquid

Claims (4)

A cleaning tank in which the cleaning liquid is stored and a cleaning tank
A bottomed cylindrical cleaning drum supported in the cleaning tank and having a drain port for lowering the water level and having an open upper surface.
A cylindrical cleaning basket that is airtightly supported and placed on the upper end of the cleaning drum and has a net-like bottom surface for accommodating objects to be cleaned.
The submersible pump arranged in the washing tank and
A cleaning device for an object to be cleaned, comprising a cleaning nozzle for injecting the cleaning liquid supplied from the submersible pump toward the object to be cleaned in the cleaning basket.
The opening area of the drain port of the cleaning drum is set so that the amount of the cleaning liquid sent from the submersible pump is larger than the amount of drainage of the cleaning liquid drained from the drain port. Device. The cleaning nozzle is arranged on the inner wall surface of the lid of the cleaning tank provided with a lid that can be opened and closed upward, and the cleaning liquid is sprayed from the cleaning nozzle toward the object to be cleaned in the cleaning basket. The cleaning device according to claim 1, wherein the cleaning device is characterized by the above. The cleaning according to claim 1 or 2, wherein the cleaning nozzle is arranged in the cleaning drum, and the cleaning liquid is sprayed from the cleaning nozzle toward the object to be cleaned in the cleaning basket. Device. A method for cleaning an object to be cleaned using the cleaning device for the object to be cleaned according to any one of claims 1 to 3.
The washing car containing the object to be washed is set on the washing drum in the washing tank, and the washing liquid can be operated by the submersible pump in the washing tank, and the washing car is not immersed in the washing liquid. The process of storing only the amount and
A step of operating the submersible pump to inject a cleaning liquid from the cleaning nozzle toward the object to be cleaned in the cleaning car, and cleaning the object to be cleaned in the washing car in the air.
The cleaning liquid sprayed from the cleaning nozzle is sequentially accumulated in the cleaning drum and the cleaning basket, and the object to be cleaned in the cleaning basket is completely immersed in the cleaning liquid to obtain the cleaning liquid from the cleaning nozzle. The step of submerged cleaning of the object to be cleaned in the cleaning basket with the water flow generated by the injection.
A step of stopping the operation of the submersible pump, draining the cleaning liquid in the cleaning drum and the cleaning car into the cleaning tank from the drain port of the cleaning drum, and draining the object to be cleaned in the cleaning basket. A method for cleaning an object to be cleaned, which comprises.

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