JPS5932192B2 - cleaning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a cleaning device for cleaning various parts such as automobile parts.

Technical Background of the Invention and Problems Therein Generally, this type of cleaning device includes a cleaning basket for storing objects to be cleaned, such as automobile parts, in a cleaning tank, and a cleaning liquid is sprayed onto the objects to be cleaned from a number of spray nozzles. , has been washed.

Cleaning liquid is supplied to each injection nozzle from a storage tank (see Japanese Patent Laid-Open No. 56-67570).
However, in this cleaning device, only one storage tank containing the cleaning liquid is installed, and the cleaning liquid is pumped by supplying pressurized air into the storage tank. While the cleaning liquid was being supplied from the tank, the cleaning liquid was not refluxed into the storage tank, making it impossible to perform the cleaning action continuously.

In addition, in order to increase cleaning efficiency during cleaning, the cleaning basket (rotary table) is rotated, but since the cleaning basket is always rotated in one direction, it is difficult to clean the object regardless of its shape. In some cases, uneven cleaning occurs, and the object to be cleaned cannot be effectively cleaned.

Furthermore, there is also a cleaning device in which the cleaning liquid in the storage tank is supplied to each injection nozzle by an electric pump so that the cleaning action can be performed continuously.

However, when using an expensive electric pump, it is not possible to use flammable liquids as the cleaning liquid due to the risk of electrical sparks, and the discharge pressure of the cleaning liquid with the electric pump cannot be controlled by the viscosity of the cleaning liquid. It was difficult to change the method depending on the shape of the object to be cleaned. Purpose of the Invention In consideration of the above-mentioned points, the present invention does not use a pump to supply and spray the cleaning liquid, nor does it use a motor to rotate the object to be cleaned or the nozzle, but rotates the object by using the injection pressure of the cleaning liquid. At least two tanks for the above-mentioned cleaning liquid are provided, and pressurized air is injected into one tank to forcibly push out the cleaning liquid, part of which is sent to the cleaning nozzle, and the other part is used for rotation. The purpose of this design is to provide a cleaning device that can perform continuous and highly efficient cleaning by returning pressure air to the other tank after the air has passed, and by alternately switching the supply of pressurized air to this tank. be.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a cleaning device according to the present invention includes a cleaning tank having a cleaning basket therein for accommodating objects to be cleaned, and a cleaning liquid being sprayed toward the objects to be cleaned in the cleaning basket. a nozzle device equipped with a plurality of injection nozzles for cleaning, a plurality of sealed storage tanks installed below the cleaning tank and storing cleaning liquid, a supply piping system extending from the storage tank toward the injection nozzle, and the cleaning a selective rotation mechanism that selectively reversibly rotates the nozzle device or the cleaning basket by means of return piping extending from the tank to each storage tank and discharge pressure discharged from a branch pipe branched from the supply piping system; It has a liquid pressure feeding device that selectively supplies the cleaning liquid in the storage tank to the injection nozzle.

Embodiments of the Invention An embodiment of the cleaning device according to the present invention will be described with reference to the accompanying drawings.

1 and 2, reference numeral 10 indicates a cleaning apparatus of the present invention for cleaning objects to be cleaned such as automobile parts and various parts.

In the cleaning device 10, a cleaning tank 12 is installed on the top of a main body 11. Inside the cleaning tank 12, a cleaning basket 13 (not shown) for storing objects to be cleaned is removably installed, and in parallel with this cleaning basket 13, a pre-cleaning basket 14 for manually cleaning various parts is installed. On the other hand, the cleaning tank 12
Two (or more than one) storage tanks 15 and 16 are arranged in parallel below the cleaning liquid.

Each storage tank 15, 16 has a cylindrical sealed structure, and a heater 17 is provided below the storage tank 15, 16.
is being heated. Further, the storage tanks 15 and 16 are connected to a nozzle device 21 via a cleaning liquid supply piping system 20.

The supply piping system 20 extends from the first storage tank 15.
Both the supply pipes 22 and 23 are joined in the middle and connected to the nozzle device 21. Each supply pipe 2
Check valves 24 and 25 are interposed on the merging portion sides of the valves 2 and 23, respectively, and branch pipes 26 and 27 are branched from the upstream sides of the check valves 24 and 25, respectively. Branch pipes 26 and 27 are the storage tank 1
2, and the nozzle device 21 is selectively rotated reversibly by the liquid pressure discharged from this opening. As shown in FIGS. 3 and 4, the nozzle device 21 has a rectangular shape as a whole, and has a piping 3 with a part cut out at the top.
has 0.

Inside this pipe 30, a large number of injection nozzles 31 are installed at predetermined intervals. The piping 30 is connected to the supply piping system 20 via a fluid rotary joint 32 and is rotatably supported around the vertical axis of the rotary joint 32 . The pipe 30 is reinforced in the middle by a ring-shaped horizontal support ring 33. The support ring 33 is provided with a large number of cut and raised portions 34 radially outward from the peripheral wall surface. The cut-and-raised portions 34 are installed at equal intervals, and the front and back surfaces of each cut-and-raised portion 34 are formed as pressure-receiving surfaces, and the cleaning liquid is discharged from the openings of the branch pipes 26 and 27 toward the pressure-receiving surfaces. . The branch pipes 26 and 27 are installed in a V-shape as shown in FIG. 4 so as to rotate the nozzle device 21 in opposite directions, and the cleaning liquid is directed from one branch pipe 26 toward the cut and raised surface. The nozzle device 21 is rotated counterclockwise when it is discharged from the other branch pipe, and clockwise when it is discharged from the other branch pipe, and a rotation mechanism that selectively rotates the nozzle device 21 is provided. It consists of 29. Note that the branch pipes 26 and 27 may be provided in an inverted V-shape as shown by the dashed line in FIG. 4, and the support ring 3
Instead of providing the cut and raised portion 34 on the support ring 3, the outer peripheral surface of the support ring may be periodically formed with an uneven surface, a concave surface, or a convex surface by concave and convex machining, concave machining, or convex machining. A recess 35 is formed at the bottom of the storage tank 12, and the recess 35
A filter 36 is interposed therein.

A return pipe 37 is connected to the recess 35 . This return pipe 37 is branched in the middle, and each branch pipe 37a, 37b is connected to the lower part of the storage tank 15, 16 via a check valve 38, 39. Further, a pressure air supply device 40 constituting a liquid pressure feeding device is connected to the storage tanks 15 and 16, and pressure air supply pipes 41 and 42 of this air supply device are connected to each other.
is connected to the top of each storage tank 15,16.

The other ends of the air supply pipes 41, 42 are connected to a compressed air supply source (not shown) such as a compressor directly or via air piping installed in the factory. Control valves 44, 45 such as electromagnetic valves are interposed in the air supply pipes 41, 42, and branch pipes 46, 47 branched from the downstream side of the control valves 44, 45 are connected to the control valves 44, 45. The silencer 50 is opened to the atmosphere through control valves 48 and 49 that are linked to the opening and closing of the silencer 50, while the drain (cleaning liquid) guided by the silencer 50 is returned to the cleaning tank 12. In addition, in FIG. 2, the reference numeral 52 is a drain pipe, and a drain valve 53 is provided in the middle.

Further, a branched pipe 55 extends from the supply piping system 20 to the preliminary cleaning tank 14 side, and a valve 56 is provided in the middle of this pipe 55, and various parts can be handled by hand by opening the valve 56 as necessary. The cleaning operation is now possible. Next, the cleaning action of the cleaning device will be explained.

In the preparation stage before operation, the control valve 44 is activated as shown in FIG.
, 45 are closed, and the other control valves 48, 49 are kept open.

When cleaning is to be performed from this state, the control valve 44 is opened and the control valve 48 is closed. As a result, pressurized air is supplied from the air supply source through the supply pipe 41 into the first storage tank 15, which pushes down the liquid level of the stored cleaning liquid and acts as a pump. Due to this pumping action, the first storage tank 15
The cleaning liquid stored in the cleaning basket 1 passes through the first supply pipe 22 of the supply piping system 20 and the fluid rotary joint 32, and is supplied to the nozzle device 21, and from each injection nozzle 31 of the cleaning basket 1.
It is sprayed towards the object to be cleaned housed in the interior of the container. At this time, a part of the cleaning liquid supplied from the first storage tank 15 is discharged toward the support ring 33 of the nozzle device 21 through the branch pipe 26, and this discharge pressure is received by the pressure receiving surface of the cut and raised part 34.

As a result, the nozzle device 21 is rotated counterclockwise as shown in FIG. 6, and as the nozzle device 21 rotates, the cleaning liquid is sprayed over the entire surface of the object to be cleaned, thereby cleaning the object. Cleaning liquid 1 sprayed towards the object to be cleaned
After washing the object to be washed, the washing basket 8 passes between the meshes of the washing basket 13 and is dropped into the washing tank 12, where it is stored.

The stored cleaning liquid is then purified by a filter 35,
It is refluxed into the second storage tank 16 through the return pipe 37. At this time, the check valve 38 of the return pipe 37 is closed by the pressure of the cleaning liquid 18 on the first storage tank 15 side. Moreover, since the inside of the second storage tank 16 is opened to the atmosphere by the silencer 50 via the air supply pipe 42 and the branch pipe 49, the cleaning liquid in the cleaning tank 12 is smoothly returned through the return pipe 37. The second storage tank 16 is filled. The supply amount of the cleaning liquid 18 in the first storage tank 15 is time-controlled by a timer or the like (not shown), and when a predetermined amount of cleaning liquid is supplied, the control valves 44, 45, 48, and 49 are switched to open and close, as shown in FIG. As shown in FIG. 2, control valves 45 and 48 are opened and other control valves 44 and 49 are closed.

As a result, the pressurized air is supplied to the second storage tank 16 side, and due to the pumping action of this pressurized air, the cleaning liquid in the second storage tank 16 is transferred to the second supply pipe 23 of the supply piping system 20 and the fluid rotary joint 332. The water is supplied to the nozzle device 21 through a large number of spray nozzles 31, and is sprayed toward the object to be cleaned, thereby cleaning the object.

At this time, a part of the supplied cleaning liquid is injected toward the support ring 33 of the nozzle device 21 through the branch pipe 27, and its discharge pressure is received by the pressure receiving surface of the cut and raised portion 34 of the support ring 33.

As a result, the nozzle device 21 (as shown in FIG. 8)
It is rotated clockwise around the vertical axis of the fluid rotary joint 32. By rotating the nozzle device 21 clockwise and jetting the cleaning liquid from each jet nozzle 31 of the nozzle device 21, the object to be cleaned can be effectively cleaned. The cleaning liquid used to clean the object to be cleaned passes through the mesh of the cleaning basket 13 and is stored in the cleaning tank 12.

The stored cleaning liquid is filtered through a filter 36, returned to the first storage tank 15 through a return pipe 37, and stored in this tank 15. At this time, the first storage tank 15
Since the inside is opened to the atmosphere via the air supply pipe 41 and the branch pipe 46 by the silencer 50, the cleaning liquid passing through the return pipe 37 is smoothly guided into the first storage tank 15.

The flow back to the second storage tank 16 is restricted and regulated by the check valve 39 being closed. This check valve 39 is closed by the hydraulic pressure of the second storage tank 16. However,
When a predetermined amount of the cleaning liquid in the second storage tank 16 is supplied (
This is time-managed using a timer (not shown), etc.), and the control valve 44
, 45, 48, and 49 are automatically switched between opening and closing.

Thereafter, the cleaning is performed in sequence, and the cleaning action continues automatically and continuously to clean the object to be cleaned. At that time, the cleaning time of the object to be cleaned is appropriately determined depending on its shape, size, amount, etc., and the injection force injected from each injection nozzle 31 of the nozzle device 21 is controlled by the control valve 44 to adjust the pressure of pressurized air.
, 45. In the description of one embodiment of the present invention, the cleaning basket is fixedly installed and the nozzle device is rotated around the vertical axis. However, as shown in FIG. It may be fixed and rotatably support the cleaning passket 56.

In this case, it is necessary to install a large number of pressure receiving plates 57 on the outer peripheral surface of the cleaning basket 56 at equal intervals. Effects of the Invention As described above, in the cleaning device according to the present invention, a plurality of sealed storage tanks are provided below the storage tank,
Since the cleaning liquid stored in each storage tank is selectively used, supplied to the nozzle device via the supply piping system, and sprayed from each injection nozzle of the nozzle device toward the liquid to be cleaned, the shape of the object to be cleaned is Depending on the size, amount, etc., even a small cleaning device can efficiently perform the cleaning action continuously for a predetermined period of time.

In addition, since a selective rotation mechanism is provided that selectively reversibly rotates the nozzle device or the cleaning basket using the liquid pressure discharged from the branch pipe branched from the supply piping system, the nozzle device and the cleaning basket can be rotated relative to each other. Moreover, since the rotation can be performed reversibly, uneven cleaning can be eliminated and the cleaning action can be performed effectively and efficiently.

Furthermore, if the liquid pressure feeding device is configured with a pressurized air supply device and the cleaning liquid is supplied by pressurized air,
By adjusting the pressure of the pressurized air, the injection pressure of the cleaning liquid injected from the nozzle device can be adjusted, and
Since there is no need to use an electric pump, organic solvents, etc. can also be used, and there is no need to select the type of cleaning liquid.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the cleaning device according to the present invention, FIG. 2 is a diagram showing the principle of the cleaning device according to the present invention, and FIG.
The figure is a perspective view showing a combination of a cleaning basket and a nozzle device provided in a cleaning tank of a cleaning device, FIG. 4 is a plan view of FIG. 3, and FIG. Figure 6 is a plan view showing the rotation direction of the nozzle device during the cleaning action shown in Figure 5. Figure 7 is a diagram showing the cleaning action using the cleaning liquid from the storage tank. Figure 7 is a diagram showing the cleaning action using the cleaning liquid from the second storage tank. FIG. 8 is a diagram showing the rotation direction of the nozzle device during the cleaning action shown in FIG. 7, and FIG. 9 is a diagram showing a modification of the present invention. 10...Cleaning device, 12...Cleaning tank,
13,56...Washing basket, 14...
...Preliminary cleaning basket, 15, 16... Storage tank, 18... Washing liquid, 20... Supply piping system, 21, 55... Nozzle device, 22
, 23... Supply piping, 26, 27...
Branch pipe, 29...Selective rotation mechanism, 31...
... Injection nozzle, 32 ... Fluid rotary joint, 3
3...Support ring, 34...Cut and raise (
pressure receiving surface), 38...Return piping, 40...
・Liquid pressure feeding device (pressure air supply device), 41, 42...
...Air supply pipe, 44, 45, 48, 49...
... Control valve, 50 ... Silencer.

Claims (1)

[Scope of Claims] 1. A nozzle device comprising: a cleaning tank having a cleaning basket therein for accommodating an object to be cleaned; and a plurality of injection nozzles for spraying a cleaning liquid toward the object to be cleaned in the cleaning basket; at least two sealed storage tanks installed below the cleaning tank to store cleaning liquid; a supply piping system extending from each of the storage tanks toward the injection nozzle; and a supply piping system extending from the cleaning tank to each storage tank. It has a return pipe and a branch pipe that is branched from the supply pipe system and opens toward the pressure receiving part of the nozzle device or the cleaning basket, and selectively controls the nozzle device or the cleaning basket by the liquid pressure discharged from the branch pipe. A cleaning device comprising: a selective rotation mechanism for reversible rotation; and a liquid pressure feeding device for selectively pumping pressurized gas to each storage tank in order to selectively supply the cleaning liquid in each storage tank to an injection nozzle. 2 Two storage tanks are installed in parallel, and the supply piping of the supply piping system extends from each storage tank, and each supply piping is joined in the middle and connected to the nozzle device, and the cleaning liquid is sent from each storage tank to the liquid pressure feeding device. A cleaning device according to claim 1, which is selectively supplied by. 3. The nozzle device or the cleaning basket has a large number of pressure-receiving surfaces formed at equal intervals in the circumferential direction, and each of the pressure-receiving surfaces has a tip of a branch pipe as claimed in claim 1 or 2.
Cleaning equipment as described in Section. 4. The cleaning device according to claim 1, wherein the cleaning basket is detachably installed in the cleaning tank, and the nozzle device is rotatably installed around a vertical axis. 5. The cleaning device according to claim 1, wherein the cleaning basket is rotatably installed in the cleaning tank around a vertical axis, and the nozzle device is fixedly installed in the cleaning tank.