Bottom board washing device

Abstract

To provide a bottom board washing device which can appropriately recycle washing water used in washing of a bottom board.SOLUTION: A bottom board washing device 100 has: a mounting part 110 on which a bottom board P is mounted; a conveyance part 130 for conveying the bottom board P mounted on the mounting part 110; a washing part 120 for washing the bottom board P by jetting washing water to the bottom board P from a plurality of jetting parts 121, while moving the bottom board P by the conveyance part 130; a water tank part 150 for storing the washing water jetted to wash the bottom board P; a pump 161 for pumping up the washing water stored in the water tank part 150; and a pipe 180 configured to be connected to the pump 161, and guide the washing water pumped up by the pump 161 to the plurality of jetting parts 121 in the washing part 120, wherein the pipe 180 has an openable / closable exhaust port 181 in the vicinity of a terminal of the pipe 180.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a sole cleaning device. [Background technology]

[0002] Generally, there are floor plates used at construction sites, work sites, etc. Floor plates are, for example, steel floor plates, and are laid (temporarily) for purposes such as securing a route for carrying in materials, protecting work floors and ground, and securing footing on soft ground.

[0003] There are known cleaning devices for cleaning such floor plates. For example, Patent Document 1 discloses a cleaning device for iron floor plates that safely and economically removes dirt from temporary walkway iron floor plates that are often used at construction sites in preparation for reuse.

[0004] Specifically, the iron plate washing device disclosed in Patent Document 1 removes dirt from the surface of the iron plate by spraying cleaning water with a washing machine while conveying the iron plate with a conveying roller device. Furthermore, in this iron plate washing device, the dirt on the iron plate is washed with high pressure by the washing machine, and the washing water used there is received and stored in a storage tank located below, and is filtered by a filter installed in the circulation path for reuse. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2015-80783 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the iron plate cleaning device disclosed in Patent Document 1, it is necessary to provide an appropriate filter in the circulation path according to the particle size of the dirt components, and if the filter becomes clogged with sludge, the filter must be replaced. There are various types of dirt components that are washed away from the iron plate, and it is also possible that foreign matter such as dirt and dust may enter from the top of the storage tank or pump room where the cleaning water is stored to be circulated and reused. There is a limit to how much these dirt components and foreign matter such as dirt and dust can be prevented by filters.

[0007] If dirt components and foreign matter such as garbage and dust that could not be prevented by the filter are contained in the cleaning water pumped up by the pump for reuse, there is a problem that these will remain in the circulation path (pipes) or cause clogging of the spray nozzle.

[0008] Therefore, the present invention has been made in consideration of the above-mentioned problems, and one of the objects of the present invention is to provide a floor board cleaning device that can appropriately reuse the cleaning water used to clean the floor boards. [Means for solving the problem]

[0009] A floor board cleaning device according to one embodiment of the present invention is a floor board cleaning device that cleans a floor board while moving it, and includes a placement section for placing the floor board, a transport section for transporting the floor board placed on the placement section, a cleaning section that cleans the floor board by spraying cleaning water from multiple spray sections onto the floor board while moving the floor board using the transport section, a water tank section for storing the cleaning water sprayed to clean the floor board, a pump for pumping up the cleaning water stored in the water tank section, and piping connected to the pump and configured to guide the cleaning water pumped up by the pump to the multiple spray sections in the cleaning section, and the piping has an openable and closable drain outlet near the end of the piping.

[0010] In the above aspect, the drain outlet may be in a closed state during a first period in which the pump is operating to spray cleaning water from multiple spraying devices, and may be changed from the closed state to an open state during a second period in which the pump rotation speed is lower than the rotation speed during the first period, or during a third period in which the pump is stopped.

[0011] In the above aspect, the second period may be a stop operation control period in which the pump is stopped.

[0012] In the above aspect, the drain may be changed from a closed state to an open state within a first predetermined time before the pump is stopped.

[0013] In the above aspect, the drain outlet may be changed from the closed state to the open state within a second predetermined time when the pump is stopped or after the pump is stopped.

[0014] In the above aspect, the piping may have a valve on the pump side of the drain outlet for controlling opening and closing of the drain outlet. Effect of the Invention

[0015] According to the present invention, it is possible to provide a floor board cleaning device that can appropriately reuse cleaning water used to clean floor boards. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing an outline of a floor board cleaning device 100 according to an embodiment of the present invention. [Diagram 2] 1 is a side cross-sectional view for explaining a state in which a floor plate P is cleaned in a floor plate cleaning device 100 according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram for explaining the configuration of piping 180 in the floor board cleaning apparatus 100 according to one embodiment of the present invention. [Figure 4] 1 is a diagram for explaining the opening and closing control of a valve 182 provided in a pipe 180. FIG. [Diagram 5] 13 is a flowchart showing the process flow regarding the operation of a pump 161 and a valve 182. [Figure 6] FIG. 13 is a diagram for explaining the configuration of piping 280 in a floor board cleaning apparatus 200 according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that the embodiment described below is merely a specific example for carrying out the present invention, and is not intended to limit the interpretation of the present invention. In addition, in order to facilitate understanding of the description, the same reference numerals are used as far as possible for the same components in each drawing, and duplicated descriptions may be omitted.

[0018] <One embodiment> [Configuration of floor cleaning equipment] FIG. 1 is an external perspective view showing an overview of a floor board cleaning device 100 according to one embodiment of the present invention, and FIG. 2 is a side cross-sectional view for explaining how a floor board P is cleaned in the floor board cleaning device 100 according to one embodiment of the present invention.

[0019] In FIG. 1, the floor board cleaning apparatus 100 includes a placement section 110, a cleaning section 120, a transport section (transport rollers) 130, an auxiliary roller 140, a water tank section 150, a pump chamber 160, a discharge path 170, piping 180, and a control means (not shown).

[0020] The placing section 110 is configured so that the loaded floor plate P to be cleaned can be placed thereon, and is opened so that the floor plate P can be brought in from above and one side of the placing section 110. Specifically, the floor plate P is placed on the placing section 110 by bringing in the floor plate P from one side using a forklift or by bringing in the floor plate P from above the floor plate cleaning apparatus 100 using a crane.

[0021] The placement unit 110 may also be provided with an auxiliary roller 140 for transporting the sole plate P placed on the placement unit 110 to the cleaning unit 120. The auxiliary roller 140 does not need to be equipped with a drive source such as a motor, unlike the transport unit (transport roller) 130 described below, and is a roller for assisting in the transport of the sole plate P placed on the auxiliary roller 140 by rotating in the transport direction of the sole plate P.

[0022] The cleaning unit 120 cleans the floor plate P while moving the floor plate P placed on the placement unit 110. For example, as shown in Fig. 2, the cleaning unit 120 cleans the floor plate P with cleaning water while the floor plate P is being moved in the area of ​​the cleaning unit 120 by the conveying unit (conveying rollers) 130.

[0023] For example, the cleaning unit 120 includes a plurality of spraying units 121 that spray cleaning water from above and below the floor plate P moved by the conveying unit (conveyor rollers) 130 in the area of ​​the cleaning unit 120. Here, the cleaning water sprayed to wash the floor plate P is pumped up from the pump chamber 160 by driving the pump 161, and is supplied via the piping 180 to the spraying units 121 arranged above and below the floor plate P moved by the conveying unit (conveyor rollers) 130. As a result, the floor plate P is washed by having the cleaning water sprayed toward the upper and lower surfaces as it moves within the area of ​​the cleaning unit 120.

[0024] The conveying section 130 conveys the sole plate P placed on the placing section 110 to the cleaning section 120, and typically also moves the sole plate P in the area of ​​the cleaning section 120. For example, the conveying section 130 is a plurality of conveying rollers 130 arranged approximately in parallel between the placing section 110 and the cleaning section 120, and includes a motor that drives the plurality of conveying rollers 130.

[0025] The motor drives the multiple transport rollers 130 to rotate, and transports the floor plate P placed on the placement section 110 to the cleaning section 120. Similarly, multiple transport rollers 130 are configured in the cleaning section 120 area, and the floor plate P is moved in the cleaning section 120 area by rotating these, while being cleaned by the above-mentioned cleaning section 120.

[0026] The multiple conveying rollers 130 convey the floor plate P placed on the mounting section 110 to the cleaning section 120, and further move the floor plate P in the area of ​​the cleaning section 120, or may move the floor plate P back and forth in the area of ​​the cleaning section 120 and then move it back to the mounting section 110 again.

[0027] In addition, in this embodiment, the placement section 110 and the transport section 130 are described separately, but the placement section 110 may have the function of the transport section 130 capable of transporting the sole plate P placed on the placement section 110, or the transport section 130 may function as the placement section 110 on which the sole plate P can be placed, while moving the sole plate P. In other words, the placement section 110 and the transport section 130 may be configured to have or include each other's functions.

[0028] The water tank section 150 is configured to receive and store from below the cleaning water sprayed toward the floor plate P by the cleaning section 120, the cleaning water reflected by the floor plate P, and foreign matter (dirt) removed from the floor plate P.

[0029] The cleaning water stored in the water tank section 150 is discharged as wastewater, or purified (filtered) by removing foreign matter (dirt) contained in the cleaning water and reused as cleaning water. Specifically, the foreign matter (dirt) accumulated in the water tank section 150 is discharged from the discharge port 171 via the discharge path 170 arranged at the bottom of the water tank section 150, and when it is to be used (circulated) as cleaning water again, the cleaning water is sent to the pump chamber 160, and the pump 161 is driven in the pump chamber 160 to pump up the cleaning water and supply it to the spray section 121 of the cleaning section 120 via the piping 180.

[0030] The control means controls the operations of the above-mentioned cleaning unit 120, transport unit 130, discharge path 170 (sludge removal device), and pump 161. For example, the control means controls the start and end (stop) of operation, the rotation speed and rotation direction, etc. of the multiple transport rollers 130 (motors). In addition, the control means controls which of the spraying units 121 in the cleaning unit 120 will spray cleaning water, the start and end (stop) of operation of the spraying unit 121, and the amount and pressure of the sprayed cleaning water.

[0031] Typically, the control means controls the operation of the conveying rollers 130 (motor) so as to move the floor plate P placed on the placement section 110 to the cleaning section 120, and controls the operation of the spray section 121 of the cleaning section 120 so as to clean the floor plate P with cleaning water while the floor plate P is moved through the area of ​​the cleaning section 120 by the conveying rollers 130.

[0032] Furthermore, the control means operates a discharge passage 170 (sludge discharge device) to discharge sludge accumulated at the bottom of the water tank section 150, and operates a pump 161 to pump up cleaning water in a pump chamber 160 to supply cleaning water to the cleaning section 120.

[0033] In this manner, the cleaning water pumped up by the pump 161 is sprayed from the multiple spraying parts 121 in the cleaning part 120 via the piping 180 to clean the floor plate P.

[0034] Here, it is important to reduce dirt on the pipes 180, etc., that occurs when cleaning water containing foreign matter (dirt and sludge) is reused, and further to suppress clogging of the multiple jetting parts 121. Below, a process for reducing the amount of cleaning water containing foreign matter (dirt and sludge) remaining in the pipes 180 will be described in detail.

[0035] Piping Configuration First, the configuration of the pipes 180 that guide the cleaning water pumped up by the pump 161 to the multiple jetting parts in the cleaning part 120 will be described.

[0036] 3 is a diagram for explaining the configuration of the piping 180 in the floor board cleaning device 100 according to one embodiment of the present invention. As shown in FIG. 3, the piping 180 is connected to the pump 161, and in the cleaning section 120, an upper piping 180A is provided above the transport section (transport rollers) 130, and a lower piping 180B is provided below the transport section (transport rollers) 130.

[0037] Specifically, piping 180 enters from one lateral end (side wall) of cleaning section 120 on the pump 161 side, extends from one end to the other end inside cleaning section 120 as upper piping 180A, turns back near the other end, extends from the other end to one end inside cleaning section 120 as lower piping 180B, and exits from one end (side wall).

[0038] The upper piping 180A is provided with a plurality of jetting parts 121 at a predetermined interval from one end to the other end inside the cleaning section 120, and the cleaning water pumped up by the pump 161 is guided to each of the plurality of jetting parts 121 via the piping 180 (upper piping 180A) and jetted downward from each of the plurality of jetting parts 121. In this way, the upper surface of the sole plate P moved by the conveying part (conveying roller) 130 in the cleaning section 120 area is cleaned.

[0039] Similarly, the lower pipe 180B is provided with a plurality of jetting parts 121 at a predetermined interval from one end to the other end inside the cleaning section 120, and the cleaning water pumped up by the pump 161 is guided to each of the plurality of jetting parts 121 via the pipes 180 (upper pipe 180A and lower pipe 180B) and sprayed upward from each of the plurality of jetting parts 121. As a result, the lower surface of the sole plate P moved by the conveying part (conveying roller) 130 in the cleaning section 120 area is cleaned.

[0040] Furthermore, piping 180 has drain outlet 181 that can be opened and closed near the end of piping 180. In the case of piping 180 shown in Fig. 3, drain outlet 181 is provided at the end of lower piping 180B, which is near the end of the flow path of cleaning water pumped up by pump 161, and valve 182 that controls the opening and closing of drain outlet 181 is provided on the front side of the drain outlet 181.

[0041] The opening and closing of the valve 182 may be controlled by a control means (not shown), and the cleaning water remaining in the pipe 180 is drained by opening and closing the drain outlet 181 .

[0042] [Valve opening and closing control] 4 is a diagram for explaining the opening and closing control of the valve 182 provided in the pipe 180. As shown in FIG. 4, the opening and closing control of the valve is performed based on the rotation speed of the pump 161.

[0043] Specifically, while the floor plate P is moving in the area of ​​the cleaning section 120 by the transport section (transport roller) 130, the multiple spraying sections 121 spray cleaning water from above and below the floor plate P to clean the floor plate P. That is, during the period (first period) in which the floor plate P is moving in the area of ​​the cleaning section 120 and being cleaned, the valve 182 is set to the "closed state" to close the drain port 181, and the pump 161 is driven to pump up the cleaning water, as a "cleaning operation." The cleaning water pumped up by the pump 161 is supplied to the multiple spraying sections 121 via the piping 180.

[0044] Then, when cleaning of the floor plate P is completed and the stopping operation of the pump 161 is started (time t1), the valve 182 is changed from the "closed state" to the "open state." During the pump stopping operation period (time t1 to time t2: second period) and the stop period of the pump 161 (time t2 and thereafter: third period), the drain port 181 is opened and the cleaning water remaining in the piping 180 is drained from the drain port 181.

[0045] Here, the pump stopping operation refers to an operation performed when stopping the pump 161, and is a so-called slow stopping operation in which, for example, the rotation speed of the pump 161 that was driven to pump up cleaning water during the cleaning operation is not suddenly reduced (stopped all at once), but rather the rotation speed of the pump 161 is gradually reduced to stop the pump 161.

[0046] That is, during the pump stop operation period (second period from time t1 to time t2), pump 161 is operating, and cleaning water is pumped up and supplied to pipe 180. As a result, inside pipe 180, cleaning water pumped up by pump 161 flows from the pump 161 side through upper pipe 180A and lower pipe 180B toward drain outlet 181 at the end of lower pipe 180B. The cleaning water inside pipe 180 is drained from drain outlet 181, reducing the amount of foreign matter (dirt) remaining in pipe 180.

[0047] In this embodiment, the valve 182 is changed from the "closed state" to the "open state" when the stopping operation of the pump 161 is started (time t1). However, the timing is not limited to this as long as the cleaning water in the pipe 180 is drained from the drain outlet 181 due to the pressure and flow rate in the pipe 180 when the valve 182 is changed from the "closed state" to the "open state".

[0048] The timing for changing the valve 182 from the "closed state" to the "open state" may be, for example, any timing during the pump stop operation period (second period: from time t1 to time t2), or within a first predetermined time before the pump 161 is stopped, or the timing (time t2) when the pump 161 is stopped, or within a second predetermined time after the pump 161 is stopped. In other words, the timing for changing the valve 182 from the "closed state" to the "open state" may be set appropriately depending on the type and performance of the pump 161.

[0049] Next, the process flow of the operations of the pump 161 and the valve 182 controlled by the control means will be described.

[0050] Fig. 5 is a flowchart showing a process flow regarding the operations of the pump 161 and the valve 182. As shown in Fig. 5, the control means controls the operations of the pump 161 and the valve 182 through steps S110 to S140.

[0051] In step S110, the control means closes the drain outlet 181 by setting the valve 182 to the "closed state."

[0052] In step S120, the control means operates the pump 161. Specifically, the control means operates the conveying section (conveying rollers) 130 to move the floor plate P placed on the placement section 110 within the area of ​​the cleaning section 120. Then, while the floor plate P is moving within the area of ​​the cleaning section 120, the control means drives the pump 161 to pump up cleaning water, and causes the cleaning water to be sprayed onto the floor plate P from the multiple spraying sections 121 via the piping 180.

[0053] In step S130, the control means judges whether or not to start the stopping operation of the pump 161. Specifically, the control means may detect whether the floor plate P has passed through the area of ​​the cleaning unit 120 and the cleaning of the floor plate P has been completed. For example, when the floor plate P has passed through the area of ​​the cleaning unit 120 and the cleaning of the floor plate P has been completed, it judges that the stopping operation of the pump 161 is to be started and proceeds to the processing of step S140 ("Yes" in step S130). On the other hand, when the floor plate P is in the area of ​​the cleaning unit 120 and the cleaning operation is to be continued, it does not judge that the stopping operation of the pump 161 is to be started and returns to the processing of step S120 ("No" in step S130).

[0054] In step S140, the control means sets valve 182 to the "open state" to open drain outlet 181. This causes the cleaning water (including foreign matter such as dirt and sludge) remaining in pipe 180 to be drained from drain outlet 181.

[0055] As described above, according to the floor board washing device 100 of the embodiment of the present invention, while the floor board P placed on the placement unit 110 is moved in the area of ​​the washing unit 120 by the conveying unit (conveying roller) 130, washing water is sprayed from the multiple spraying units 121 toward the upper and lower surfaces of the floor board P to wash the floor board P. The water tank unit 150 stores the washing water sprayed to wash the floor board P, and the pump 161 pumps up the washing water. Then, the washing water is supplied to the multiple spraying units 121 through the piping 180 connected to the pump 161, and is reused to wash the floor board P. An openable and closable drainage port 181 is provided near the end of the piping 180, and the control means controls the valve 182 provided in front of it to make the drainage port 181 "closed" during the washing operation, and changes it from the "closed" state to the "open" state during the stop operation period of the pump 161. This allows the cleaning water (including foreign matter such as dirt and sludge) remaining in the pipe 180 to be drained from the drain outlet 181 depending on the pressure and flow rate within the pipe 180.

[0056] As a result, dirt on the pipes 180, for example, that occurs when cleaning water containing foreign matter (dirt or sludge) is reused can be reduced, and furthermore, clogging of the multiple ejecting parts 121 can be suppressed.

[0057] In this way, by opening the drain outlet 181, the cleaning water remaining in the piping 180 is drained (the piping 180 is cleaned) may be drained every time one floor plate P is cleaned, or every time several floor plates P are cleaned, or may be performed every predetermined time or for each work unit. This can be set appropriately depending on the degree of dirt inside the piping 180 and the time required to clean the piping 180.

[0058] In this embodiment, the drain port 181 is opened to drain the cleaning water remaining in the piping 180 during a slow stop operation to stop the pump 161, but this is not limited to this. For example, when a forklift is used to carry in a floor plate P from one side, the floor plate P is moved to the other side by the conveying section (conveyor rollers) 130, and then the floor plate P is turned back and moved to the original one side while being washed, the rotation speed of the pump 161 may be reduced near the turning position to turn the drain port 181 to the "open state."

[0059] <Other embodiments> Although the configuration of the piping 180 shown in FIG. 3 has been described as one embodiment of the present invention, the piping is not limited to this, and other configurations are also possible.

[0060] Fig. 6 is a diagram for explaining the configuration of piping 280 in a floor board cleaning apparatus 200 according to another embodiment of the present invention. As shown in Fig. 6, the piping 280 is connected to a pump 161, and in the cleaning section 120, an upper piping 280A is provided above the transport section 130 (transport rollers) and a lower piping 280B is provided below the transport section 130 (transport rollers).

[0061] 3, the pipe 280 branches into an upper pipe 280A and a lower pipe 280B at a position before (or immediately after) entering the cleaning unit 120 from the pump 161.

[0062] The upper pipe 280A and the lower pipe 280B extend from one end to the other end inside the cleaning unit 120, and have drain ports 281A and 281B that can be opened and closed near the respective ends of the upper pipe 280A and the lower pipe 280B. Drain ports 281A and 281B are provided at the respective ends of the upper pipe 280A and the lower pipe 280B, which are near the ends of the flow paths of the cleaning water pumped up by the pump 161, and valves 282A and 282B that control the opening and closing of the drain ports 281A and 281B are provided in front of them.

[0063] The above-described embodiments are intended to facilitate understanding of the present invention, and are not intended to limit the present invention. The elements of each embodiment, as well as their arrangement, materials, conditions, shapes, sizes, etc., are not limited to those shown as examples and can be changed as appropriate. In addition, configurations shown in different embodiments can be partially substituted or combined with each other. [Explanation of symbols]

[0064] 100, 200... Sole plate cleaning device, 110... placement section, 120... cleaning section, 121... spray section, 130... transport section (transport roller), 140... auxiliary roller, 150... water tank section, 160... pump chamber, 161... pump, 170... discharge passage, 171... discharge port, 180, 180A, 180B, 280, 280A, 280B... piping, 181, 281A, 281B... drain port, 182, 282A, 282B... valve, P... sole plate

Claims

1. A floor plate cleaning device that cleans floor plates while moving them, A placement portion on which the bottom plate is placed; A conveying section that conveys the sole plate placed on the placement section; a cleaning unit that cleans the floor plate by spraying cleaning water from a plurality of spray units onto the floor plate while moving the floor plate by the transport unit; A water tank portion for storing washing water sprayed for washing the floor plate; A pump for pumping up cleaning water stored in the water tank; A pipe connected to the pump and configured to guide the cleaning water pumped up by the pump to a plurality of jetting parts in the cleaning part, The pipe has an openable and closable drain outlet near the end of the pipe. Floor cleaning device.

2. The drain outlet is In a first period in which the pump is operated to spray cleaning water from the multiple spraying units, the cleaning unit is in a closed state, The pump is changed from a closed state to an open state during a second period during which the pump rotates at a speed lower than the speed during the first period, or during a third period during which the pump is stopped.

2. The sole cleaning device according to claim 1.

3. The second period is a stop operation control period for stopping the pump.

3. The sole cleaning device according to claim 2.

4. The drain outlet is changed from a closed state to an open state within a first predetermined time before the pump is stopped.

3. The sole cleaning device according to claim 2.

5. The drain outlet is changed from a closed state to an open state within a second predetermined time when the pump is stopped or after the pump is stopped.

3. The sole cleaning device according to claim 2.

6. The piping has a valve on the pump side of the drain outlet for controlling opening and closing of the drain outlet. A plank cleaning device according to any one of claims 1 to 5.

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