JP2003080178A - Washing liquid spraying device and vehicle washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a washing liquid spraying device in which there is no fear that the washing liquid is retained in a washing liquid spraying nozzle and a closure of a nozzle hole caused by a drying and solidification of the washing liquid is prevented. SOLUTION: The washing liquid spraying device comprises a turn table 9 for placing a vehicle C to be washed thereon; a washing liquid nozzle 4 and a water nozzle 5 opposed to the vehicle C on the turn table; a washing liquid feeding device 22 connected to the washing liquid nozzle 4; a compression air feeding device 23 connected to the washing liquid nozzle 4; and closing valves 25a, 25b for switching a fluid route to the washing liquid nozzle to any one from the washing liquid feeding device and the compression air feeding device. After a spraying of the washing liquid by the washing liquid nozzle 4 is completed, the closing valves 25a, 25b are open/close-controlled by a delay of a predetermined time such that the compression air is fed from the compression air feeding device 23 to the washing liquid nozzle 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning liquid injection device, a vehicle cleaning device and a vehicle cleaning method. More specifically, the present invention relates to a cleaning liquid injection device that sprays a cleaning liquid onto the outer surface of a vehicle, a vehicle cleaning device that decomposes and separates oils and fats and the like with the cleaning liquid, and then rinses this with water, and a vehicle cleaning method.

[0002]

2. Description of the Related Art Conventionally, various types of flaw detection tests have been performed on bogies of railroad vehicles such as electric trains and diesel locomotives (having wheels for mounting a main body for accommodating passengers and cargo). In order to carry out this flaw detection test, it is necessary to clean the outer surface of the truck prior to the test. Known examples of this cleaning include air-blowing cleaning in which dirt is blown off by compressed air, wet cleaning in which hot water or a cleaning liquid is sprayed, and the like.

In wet cleaning, hot water is previously sprayed onto the surface of the dolly by an injection nozzle to remove dirt that easily falls off and to raise the temperature of the dolly. Then, the cleaning liquid is sprayed onto the outer surface of the trolley by an injection nozzle to decompose and separate oil and fats. Then, hot water is sprayed by the spray nozzle to wash away the oil and fat components and dirt that have been decomposed and separated together with the cleaning liquid. After that, for a predetermined period of time, water is continuously sprayed to carry out finish cleaning. During the cleaning operation, the sprayed cleaning liquid and water are drained while being cleaned along with the dropped dirt. The washed carriage is dried and then moved to the inspection process.

[0004]

Generally, after the cleaning liquid is sprayed onto the carriage, it is left for a predetermined time until the oil and fat on the surface of the carriage is decomposed and separated, and then rinsed with warm water. Therefore, the cleaning liquid jet nozzle is exposed to a high temperature environment for a long time. As a result, the cleaning liquid remaining in the cleaning liquid injection nozzle may be dried and solidified, and the nozzle hole may be blocked. In addition, since the vehicle cleaning device is generally operated intermittently (2 to 3 days of operation and then 2 to 3 days of rest, etc.), the problem of blockage is more likely to occur after the operation is stopped. As the cleaning liquid, for example, an alkaline degreasing cleaning liquid or the like is used, but this cleaning liquid for decomposing and separating the oil and fat necessarily inevitably solidifies by drying.

The present invention has been made in order to solve the above problems, and there is provided a cleaning liquid ejecting apparatus in which there is no possibility that the cleaning liquid remains in the cleaning liquid ejecting nozzle, and therefore, the clogging of the nozzle hole due to the drying and solidification of the cleaning liquid is prevented. Is intended to provide. Another object of the present invention is to provide a vehicle cleaning device and a vehicle cleaning method that achieve such effects.

[0006]

A cleaning liquid spraying device of the present invention is a spraying device for spraying a cleaning liquid onto an object to be cleaned and cleaning the same. The cleaning liquid spraying nozzle is connected to the cleaning liquid spraying nozzle. A cleaning liquid supply device, a compressed air supply device connected to the cleaning liquid injection nozzle, and a switching device for switching the fluid path to the cleaning liquid injection nozzle from one of the cleaning liquid supply device and the compressed air supply device It has and.

According to this structure, the cleaning liquid and the compressed air can be arbitrarily sent to the cleaning liquid injection nozzle by switching the switching device. For example, even if the cleaning liquid remains in the nozzle after the cleaning liquid is sprayed, it can be blown off and removed by spraying the compressed air. As a result, it is possible to avoid a situation in which the nozzle is clogged due to the dry solidification of the residual cleaning liquid.

A control device for controlling the operation of the switching device is provided, and the control device switches the switching device to the compressed air supply device with a predetermined time delay after the injection of the cleaning liquid by the cleaning liquid injection nozzle is completed. In the cleaning liquid injection device controlled to switch to the cleaning liquid injection device, the cleaning liquid injection nozzle is considered to be the time required for the injected cleaning liquid to permeate the oil and fat on the surface of the vehicle to be cleaned and decompose and separate it. It is possible to set the above-mentioned predetermined time after the end of the injection of the cleaning liquid. After that, it is possible to prevent the above-mentioned blockage of the nozzle by automatically injecting compressed air.

The vehicle cleaning apparatus of the present invention is one of the above-described cleaning liquid ejecting apparatuses, a turntable for mounting a vehicle to be cleaned, and a water jet so as to face the vehicle on the turntable. And a water injection device in which a nozzle is arranged, and the cleaning liquid injection nozzle of the cleaning liquid injection device is arranged so as to face the vehicle on the turntable.

According to this vehicle cleaning device, the cleaning liquid injection nozzle does not become clogged by injecting compressed air, and a plurality of carriages can be continuously cleaned. Further, since the trolley to be cleaned is rotated and rotated by the turntable, the cleaning liquid injection nozzle may be fixed, and it is not necessary to move it by a robot or the like. Furthermore, it is possible to reduce the number of cleaning liquid injection nozzles.

The vehicle cleaning method of the present invention comprises a pre-cleaning step of injecting warm water to a vehicle to be cleaned by a water injection nozzle, a cleaning step of injecting cleaning liquid to the vehicle to be cleaned by a cleaning solution injection nozzle, and then a water injection nozzle. Includes a cleaning liquid removing step of injecting warm water to the vehicle to be cleaned to wash out the cleaning liquid, and a finish cleaning step of injecting water to the vehicle to be cleaned by a water injection nozzle. The operation of injecting compressed air from the cleaning liquid injection nozzle after a predetermined time has elapsed from the end of step 1 is included.

According to this cleaning method, the residual cleaning liquid in the nozzle is blown off by injecting compressed air, so that the nozzle can be prevented from being clogged due to the drying and solidification of the cleaning liquid even in a high temperature environment thereafter. Since the cleaning step uses a cleaning liquid, it can be said to be a step of decomposing and separating oil and fat on the surface of the vehicle to be cleaned.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a cleaning liquid injection device, a vehicle cleaning device, and a vehicle cleaning method of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a plan view schematically showing an embodiment of a vehicle cleaning apparatus of the present invention, and FIG. 2 is a II-II line arrow view showing the front of the vehicle cleaning apparatus of FIG.

In the cleaning device 1 shown in FIGS. 1 and 2, a car wash space 2 for spraying hot water or a cleaning liquid onto the carriage C is partitioned by a wall. A carrier vehicle 3 for mounting a carriage C in the car wash space 2, a cleaning liquid injection nozzle (hereinafter, referred to as a cleaning liquid nozzle) 4 for injecting a cleaning liquid onto the carriage 2,
A water jet nozzle (hereinafter, referred to as a water nozzle) 5 that jets water containing warm water is provided.

The transport vehicle 3 is reciprocated on the rail 6 laid in the pit A to and from the car wash space 2 and the entry / exit space 7 outside thereof. The reciprocating motion is performed by pulling the chain 8b engaged with the sprocket 8a in the forward and reverse directions by the motor 8c. A turntable 9 is provided on the upper surface of the carrier 3.
Is provided. On the turntable 9, a rail 10a is laid so that the truck C to be cleaned can get in. A rail 10b is also laid outside the pit A so as to face the rail 10a. A shutter 11 that can be opened and closed is provided at the boundary between the car wash space 2 and the car entry / exit space 7. The shutter 11 closes the car wash space 2 after the carriage C is put into the car wash space 2 to close the car wash space 2. Isolate.

In the car wash space 2, the cleaning liquid nozzle 4 and the water nozzle 5 are arranged so as to face the upper surface, the side surface and the lower surface of the carriage C on the turntable 9. Therefore, it is possible to wash every corner of the surface of the carriage C by sequentially injecting the water and the washing liquid from the nozzles 4 and 5 while rotating the turntable 9. The turntable 9 makes one revolution in several tens of seconds, for example.
A drain 12 for collecting and discharging the sprayed cleaning liquid and water is provided at the bottom of the car wash space 2.

As shown in FIG. 3, the cleaning device 1 includes:
Drainage tank 13 for discharging used water and cleaning liquid
And a circulation line 14 for circulating and using relatively clean used water and the like. This circulation line 1
4 and the water nozzle 5 function as a water injection device. The circulation line 14 has a first storage tank 1 for temporarily storing water.
5 and the second storage tank 16, and a pump P for pumping water. A circulation pipe 17 is arranged from the drain port 12 to the water nozzle 5 via both storage tanks 15 and 16. And this circulation pipe 17
Near the connection point to the drainage port 12 of the
It is connected to the. On-off valves 18a and 18b are provided at branch portions of the circulation pipe 17 for switching the flow paths. This is to discharge or circulate used water and the like as needed. An on-off valve 19 is arranged near the connection point of the circulation pipe 17 to the water nozzle 5. Further, each storage tank 15, 16 is provided with a heater 21 for heating water in the tank, and the storage tank 16 is provided with a water supply pipe 20 for replenishing wash water.

Further, the main cleaning device 1 includes a cleaning liquid supply device 2
2 and a compressed air supply device 23 are provided. As the compressed air supply device 23, a blower for factory air supply is generally used. Therefore, air pressure of several hundred kPa is sufficient. A pipe 24 is connected from the cleaning liquid supply device 22 and the compressed air supply device 23 to reach the cleaning liquid nozzle 4. On-off valves 25a, 25b for switching the flow path leading to the cleaning liquid nozzle 4 from the cleaning liquid supply device 22 to the compressed air supply device 23 are provided in each of the portions of the pipe 24 before joining. The cleaning liquid supply device 22, the compressed air supply device 23, the cleaning liquid nozzle 4, and the opening / closing valves 25a and 25b function as a cleaning liquid injection device.

Further, the cleaning device 1 is provided with a control device 26. The control device 26 rotates the turntable 9, opens and closes the shutter 11, opens and closes the on-off valves 18a, 18b, 19, 25a and 25b, operates the pumps P, and operates the heater 21 based on the set temperature. Controls on / off operations. By controlling the operation of each device by the control device 26, the cleaning water can be saved and the cleaning liquid nozzle 4 can be operated substantially without maintenance.

FIG. 4 shows an example of the cleaning liquid nozzle 4. The cleaning liquid nozzle 4 according to the present embodiment has a nominal diameter of 1
A plurality of nozzle fittings 28 are attached to a / 2 to 3/4 inch stainless steel pipe 27 at intervals of 10 to 20 cm in the longitudinal direction by screwing or welding. The nozzle fitting 28 has an injection hole 2 having an inner diameter of about 1 mm.
8a is provided. As described above, this injection hole 2
If the cleaning liquid remains in 8a, it may be dried and solidified in a high temperature environment. In the present cleaning device 1, after the cleaning liquid is sprayed, the remaining cleaning liquid is blown off by compressed air before it solidifies.

An example of the operation of the cleaning device 1 will be described below.

In general, the trolley C is washed by warm water to remove the dirt on the surface of the trolley and to warm the trolley, and then to wash the trolley with a cleaning liquid to decompose and separate fats and oils. (Washing step), a washing step of washing away the oil and fat components and dirt decomposed and separated by blowing warm water together with the washing solution (washing solution removing step), and finally a finishing washing step of continuously spraying water on the carriage C for washing.

First, the carriage C to be cleaned is moved onto the turntable 9 in the entry / exit space 7. At this time, shutter 1
1 is open. Then, the carrier 3 is drawn into the car wash space 2. Immediately after this operation, the shutter 11 is closed by a signal from the control device 26.

In the pre-cleaning step, the cleaning liquid supply device 2
The second open / close valve 25a, the open / close valve 18a of the drainage tank 13 and the open / close valve 25b of the compressed air supply device 23 are closed, and the open / close valves 18b and 19 of the wash water circulation line 14 are opened.
The heater 21 of both storage tanks 15 and 16 is operated to heat the wash water in the tanks. Then, while rotating the turntable 9, each pump P of the circulation line 14 is operated to inject hot water from the water nozzle 5 toward the entire surface of the carriage C.
The operation of these devices is controlled by the controller 26. Then, the hot water jetted toward the carriage C is removed from the storage tanks 15 and 16 and the water nozzles while the dust and oil components are removed by the filtering device 29 and the oil and fat removing device 30 arranged in each of the storage tanks 15 and 16. It is continuously used by circulating 5 times. Wash water is supplied from the water supply pipe 20 to the storage tank 16 as needed. When the pre-cleaning is completed, the pump P is stopped. In this embodiment, this pre-cleaning step is performed for about 15 minutes. At the end of the pre-cleaning, the carriage C has been heated to an appropriate temperature.

Next, in the oil / fat separation step, the controller 2
6 closes the opening / closing valves 18b and 19 of the wash water circulation line 14, and opens the opening / closing valve 25a of the cleaning liquid supply device 22 and the opening / closing valve 18a of the drainage tank 13. The heater 21 may be turned off or may be kept on. Then, while rotating the turntable 9, the cleaning liquid supply device 2
The second pump P is operated to inject the cleaning liquid from the cleaning liquid nozzle 4 toward the entire surface of the carriage C. This injection is performed for about 3 minutes. After that, the pump P is stopped and the cleaning liquid supply device 2
The second on-off valve 25a is closed and held for about 10 minutes. During this time, the cleaning liquid spreads to every corner of the outer surface of the trolley C, causes a chemical reaction with the oil and fat on the trolley surface, and decomposes and separates it. Since the trolley C is heated in the pre-cleaning step, decomposition and separation of oil and fat by the cleaning liquid is promoted.

Immediately before or immediately after entering the flushing process, the control device 26 controls the opening / closing valve 25 of the compressed air supply device 23.
Open b. Then, compressed air is jetted from the cleaning liquid nozzle 4, and even if the cleaning liquid remains in the nozzle fitting 28, it is all blown out. The compressed air may be blown out for a short time. As a result, there is no possibility that the injection hole 28a is blocked due to the solidification of the residual cleaning liquid.

Next, in the flushing step, the control device 26 closes the opening / closing valve 25b of the compressed air supply device 23 and opens the opening / closing valve 19 of the circulation pipe 17 before the water nozzle 5. Further, the heaters 21 of both storage tanks 15 and 16 are operated to heat the wash water in the tanks. And turntable 9
While rotating, the pump P of the circulation line 14 is operated to inject hot water from the water nozzle 5 toward the entire surface of the carriage C.
When the second storage tank 16 has a sufficient amount of hot water, the pump P at the outlet of the first storage tank 15 does not have to be operated. The dirt containing the oil and fat separated from the carriage C by this hot water jet is washed away with the wash liquid by the hot water. This wastewater is primarily stored in the drainage tank 13 and then drained and cleaned. This process is continued for about 5 minutes.

Finally, in the finish cleaning process, the controller 2
Reference numeral 6 closes the opening / closing valve 18a of the drainage tank 13 and opens the opening / closing valve 18b of the circulation line 14 upstream of the first storage tank 15. Then, while rotating the turntable 9, each pump P of the circulation line 14 is operated to inject water from the water nozzle 5 toward the entire surface of the carriage. By doing this,
The water jetted toward the carriage C circulates through the storage tanks 15 and 16 and the water nozzle 5 and is continuously used. Wash water is supplied from the water supply pipe 20 to the storage tank 16 as needed.
When the finish cleaning is completed, the pump P is stopped. In this embodiment, this finishing cleaning process is performed for about 20 minutes. Finally, the surface of the truck is naturally dried or hot air dried.

Through the above steps, the surface of the trolley C is cleaned and the flaw detection test can be performed. Further, the cleaning liquid nozzle 4 waits with its injection hole 28a in a perfect state in order to clean the next carriage. Furthermore, since the cleaning water is circulated in the pre-cleaning step and the finishing cleaning step, the amount of water used is greatly reduced.

The heater 2 is also used in the finish cleaning step.
1 may be activated to use hot water. As a result, since the trolley C is heated after the finish cleaning, the drying can be easily performed without using any special means.

Further, the on-off valves 25a and 25b shown in FIG.
Alternatively, a check valve may be provided at each position. In that case, the one check valve is the nozzle 4 of the pipe 24 in FIG.
From the side to the cleaning liquid supply device 22, and the other check valve is installed so as to prevent the flow from the nozzle 4 side to the compressed air supply device 23.

[0033]

According to the present invention, there is no risk that the cleaning liquid will remain in the cleaning liquid nozzle, and therefore the nozzle hole can be prevented from being blocked by the drying and solidification of the cleaning liquid.

[Brief description of drawings]

FIG. 1 is a plan view schematically showing an embodiment of a vehicle cleaning device of the present invention.

2 is a II-II line arrow view showing the front of the vehicle cleaning device of FIG. 1. FIG.

3 is a block diagram showing the vehicle cleaning device of FIG. 1. FIG.

FIG. 4 is a partially cutaway perspective view showing an example of a cleaning liquid jet nozzle in the vehicle cleaning device of FIG.

[Explanation of symbols]

1 ... Vehicle cleaning device 2 ... Car wash space 3 ... Transport vehicle 4 ... Cleaning liquid nozzle 5 ... Water nozzle 6, 10a, 10b ... Rail 7 ... ・ Entry / exit space 8a ... sprocket 8b ... Chain 8c ... motor 9 ... Turntable 11 ... Shutter 12 ... Drainage port 13 ... Drainage tank 14 ... Circulation line 15 ... First storage tank 16 ... Second storage tank 17 ... Circulation piping 18a, 18b, 19, 25a, 25b ... Open / close valve 20 ... Water supply pipe 21 ... Heater 22 ··· Cleaning liquid supply device 23 ··· Compressed air supply device 24 ... Piping 25a, 25b ... Open / close valve 26 ··· Control device 27 ... Stainless steel pipe 28 ... Nozzle fitting 28a ... Injection hole 29 .. Filtration device 30 ··· Oil and fat removing device A ... Pit C ... Truck (vehicle to be washed) P ... Pump

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3B201 AA31 AB05 BB03 BB23 BB82                       BB88 BB90 BB92 CC12 CD22                 3D026 AA02 AA12 AA18 AA19 AA24                 4F033 AA04 BA02 BA04 GA01 GA11                       HA01 LA03

Claims (4)

[Claims] 1. An injection device for injecting a cleaning liquid onto an object to be cleaned for cleaning the same, comprising: a cleaning liquid injection nozzle; a cleaning liquid supply device connected to the cleaning liquid injection nozzle; and a connection to the cleaning liquid injection nozzle. And a switching device for switching the fluid path to the cleaning liquid injection nozzle to either the cleaning liquid supply device or the compressed air supply device. 2. A compressed air supply device comprising a control device for controlling the operation of the switching device, wherein the control device switches the switching device with a predetermined time delay after the injection of the cleaning liquid by the cleaning liquid injection nozzle is completed. The cleaning liquid ejecting apparatus according to claim 1, wherein the cleaning liquid ejecting apparatus is controlled so as to be switched to. 3. A cleaning liquid ejecting apparatus according to claim 1, wherein a turntable for mounting a vehicle to be cleaned and the cleaning liquid ejecting nozzle are arranged so as to face the vehicle on the turntable. A vehicle cleaning device comprising: a water injection device in which a water injection nozzle is arranged so as to face a vehicle on a table. 4. A pre-cleaning step of injecting warm water to a vehicle to be cleaned by a water injection nozzle, a cleaning step of injecting a cleaning liquid to the vehicle to be cleaned by a cleaning liquid injection nozzle, and a vehicle to be cleaned by a water injection nozzle. It includes a cleaning liquid removal process of spraying warm water to wash away the cleaning liquid, and then a finish cleaning process of spraying water to the vehicle to be cleaned by a water spray nozzle. A method for cleaning a vehicle, which includes an operation of injecting compressed air from a cleaning liquid injection nozzle later.