JP2014183927A - Dishwashing system for dining hall - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dishwashing system for dining hall capable of improving efficiency in water utilization.SOLUTION: A dining hall dishwashing system 5 comprises a pre-washing device 6 by which a user may remove off leftover meals from dishes by himself when the user of a dining hall 1 returns dishes. The pre-washing device 6 comprises: a sink 8; a washing water valve 11 capable of jetting tap water for removing off the leftover meals on dishes into the sink 8; and a shower water jetting port 13 and a trough water jetting port 14 for washing away the leftover meals dropped into the sink 8, to an outlet 9 of the sink 8. In addition, the dining hall dishwashing system 5 comprises: a filtration device 21 filtrating leftover meals and washing wastewater discharged from the outlet 9 of the sink 8; and a circulation device 31 supplying the washing wastewater filtrated by the filtration device 21 to the shower water jetting port 13 and the trough water jetting port 14.

Description

  The present invention relates to a dishwasher dishwashing system that allows a user of a cafeteria to wash off the remaining dishes when the tableware is returned.

  Conventionally, in a self-service employee cafeteria, a simple cleaning device (hereinafter referred to as a “pre-cleaning device”) is used to allow the user's hand to wash away the leftovers of the tableware when the user returns the tableware. May be installed). Examples of the pre-cleaning device include a sink, a shower capable of spraying water toward the inside of the sink, and water discharge for pushing the remaining rice washed away by the shower water to the outlet of the sink by the power of water. Some devices include a device (see, for example, Patent Document 1).

Japanese Patent No. 3828871

  By the way, in the pre-cleaning apparatus as described above, water is supplied and used for both the shower and the water discharge apparatus, and a large amount of water is used. Therefore, water can be used more efficiently in the pre-cleaning apparatus. It has been demanded.

  The present invention has been made to solve the above-described problems and the like, and an object of the present invention is to provide a dinning tableware washing system capable of efficiently using water.

  In the following, each means suitable for solving the above-described problems will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. In a dining room dishwashing system equipped with a pre-cleaning device that allows the user to wash away the leftovers of tableware when the user of the dining room returns the tableware,
The pre-cleaning device is
A sink,
Washing water supply means capable of discharging clean water for washing off the leftovers of the dishes on the sink;
Excluding water supply means capable of discharging water for flushing the remaining food dropped on the sink to the outlet of the sink,
A filtering means for filtering residual rice and washing wastewater discharged from the outlet of the sink;
A dishwashing dish washing system comprising: a washing wastewater circulation means for supplying washing wastewater filtered by the filtering means to the reject water supply means.

  According to the means 1, the cleaning waste water discharged together with the remaining rice from the outlet of the sink is filtered and supplied to the drainage water supplying means, and the remaining rice dropped in the sink is reused as water for flushing to the outlet. be able to. Accordingly, the amount of clean water used can be remarkably reduced, and the cost can be reduced and the environmental load related to the production of clean water can be reduced.

  Also, the water that is used to wash away leftovers from tableware is clean water. For this reason, it is possible to prevent a situation in which the washing waste water adheres to the user's hand or the tableware when the remaining rice is washed away from the tableware. Therefore, the user's sanitary environment can be suitably maintained while utilizing the cleaning wastewater. Furthermore, since the clean water discharged from the cleaning water supply means for flowing the remaining rice from the tableware is mixed with the circulating water circulating through the tableware cleaning system for the cafeteria, it becomes the cleaning waste water. The situation where the sewage density | concentration of water raises remarkably can be suppressed.

Mean 2. The filtering means includes
A leftover filter for removing leftovers from the discharge and washing wastewater discharged from the outlet of the sink;
The waste water filtered by the left rice filter has a water storage tank that stores a certain amount of water by drainage through an overflow pipe, and the left food filter is located inside the water storage tank upper side,
The dishwashing dishwashing system according to means 1, wherein the washing wastewater circulation means sucks the washing wastewater from the reservoir by means of a circulation pump and supplies the suctioned wastewater supply means to the waste water supply means.

  According to the means 2, the waste water supply can be taken out by a pump with a simple structure in which an overflow pipe is attached to the housing where the leftover filter necessary for the pre-cleaning device is installed, and the waste water is supplied. Can be supplied to the means.

Means 3. The overflow pipe is
A single pipe with a male thread at one end,
The reservoir is
A tapping having a female screw to which the overflow pipe can be screwed to the bottom,
A fixed amount of washing waste water can be stored by screwing the overflow pipe upright,
The dining tableware washing system according to means 2, characterized in that the washing waste water collected in the reservoir can be drained by loosening and removing the overflow pipe.

  According to the means 3, it is possible to easily and freely store and drain the water storage tank with a simple configuration.

Means 4. The filtering means includes
The water reservoir is configured to be movable with a caster,
4. The dining tableware washing system according to means 2 or 3, wherein, when in operation, the lower part of the overflow pipe of the reservoir is installed directly above the drainage groove of the cooking space.

  According to the means 4, if the lower part of the overflow pipe of the reservoir is located in the upper part of the drainage groove which is essential for the cooking space of the cafeteria, unnecessary washing wastewater can be obtained without any pipe connection. It can be discharged without polluting the surroundings. In addition, the water storage tank and the periphery of the water storage tank can be cleaned more smoothly and more carefully. Even if it becomes difficult to contact the reservoir itself by setting the storage tank installation space at a position that will not interfere with the work in the cooking space, Can be pulled out of the installation space to clean the water reservoir and the storage space of the water reservoir relatively easily. Therefore, even if the tableware cleaning system for canteens is installed, it is possible to prevent the workability in the cooking space from deteriorating while keeping the sanitary environment of the cooking space suitable.

  It should be noted that “the pipe connected to the water reservoir is detachably connected to the water reservoir via a coupler joint”. In this case, cleaning inside the pipe connected to the water storage tank can be performed more smoothly and more carefully.

  Means 5. The washing water supply means includes an operation means that can be operated by a user, or a detection means that can detect an operation in which the user pushes tableware in the vicinity of a water discharge position of the washing water supply means. Means 1 to 4 are configured to be switchable between an open state for discharging water and a closed state for stopping water in response to an operation or detection by the detection means. A dishwashing system for canteens according to any one of the above.

  According to the means 5, clean water can be discharged from the washing water supply means only when necessary. In other words, when the user is not using the pre-cleaning device or when the user finishes the meal and returns the tableware without taking out the leftover food, it is not necessary to use clean water. Therefore, the amount of clean water used can be further reduced as compared with the case where clean water is constantly discharged from the cleaning water supply means.

  The form of the operation means is not particularly limited, and any of a rotary handle type, a lever type, and a button type may be used. Further, as the detection means, for example, there is a non-contact position sensor or the like in the vicinity of the water discharge position of the cleaning water supply means, and it is configured to detect tableware or the like that is presented below the faucet of the cleaning water supply means. Is desirable.

It is a top view which shows the tableware cleaning system for dining rooms. It is a front view which shows the dishwashing system for dining rooms. It is a side view which shows a water reservoir etc. It is a front view which shows a water reservoir etc.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1 and FIG. 2, the dishwasher dish washing system 5 installed in the cafeteria 1 (in this example, the company employee cafeteria) is used when a user (dinner) of the cafeteria 1 returns the dishes. A pre-cleaning device 6 is provided that allows the eater himself to wash away the remaining dishes.

  The pre-cleaning device 6 extends from the eating space 2 to the cooking space 3 along the wall 4 of the eating space 2 of the dining room 1 and is configured to be able to place dishes, and is placed on the eating space 2 side. A conveyor 7 that transports the tableware to the cooking space 3 and a horizontally long sink 8 that is installed in a line along the extending direction of the conveyor 7 on the front side of the conveyor 7 are provided. In other words, the eater who finished the meal carries the tableware to the pre-cleaning device 6 and places it on the conveyor 7 so that the tableware is returned to the cooking space 3 side. Further, when the tableware is returned, if the tableware has leftovers, the leftovers are dropped on the sink 8 on the front side of the conveyor 7 before the tableware is placed on the conveyor 7. Incidentally, the tableware carried to the cooking space 3 (washing place) by the conveyor 7 is cleaned by a commercial dishwasher (not shown).

  Further, the pre-cleaning device 6 includes a cleaning faucet 11 (in this example, a sink top type) as cleaning water supply means capable of discharging clean water to wash away the leftovers of tableware in the sink 8 (tank), and the sink 8 A shower spout 13 and a trough spout 14 are provided as drain water supply means capable of discharging water for pouring water for pouring the remaining rice dropped into (the tank) to the discharge port 9 of the table 8. The washing faucet 11 is provided with a lever 12 as an operating means, and a eater can operate the lever 12 to open and close the washing faucet 11. That is, when returning the tableware, in order to drop the leftovers of the tableware to the sink 8, even if the tableware is turned over, if the leftovers do not fall on the tableware, the water is removed from the washing tap 11 and the leftovers. Can be washed off in the sink 8.

  Basically, the pair of sinks 8 are symmetrical to each other. More specifically, as shown in FIG. 2 and the like, the outlets 9 of the sinks 8 are not the bottom surface (of the tank) but the sinks 8 are abutted on the inner side of the back side (conveyor 7 side). It is formed in the side part (the central side in the left-right direction when viewed as a whole of the pre-cleaning device 6). In addition, the bottom surface of the sink 8 is inclined downward toward the discharge port 9 and is configured to be continuous with the discharge port 9 at the most downstream position.

  Further, a plurality of shower spouts 13 are provided at predetermined intervals along the lateral width direction on the inner side surface on the near side of the sink 8. Moreover, the trough water spouting port 14 is provided on the inner surface opposite to the side where the pair of sinks 8 are abutted. In the present embodiment, in the state where the pre-cleaning device 6 is operated, the water is basically discharged from the shower water outlet 13 and the trough water outlet 14 at all times. Therefore, the remaining rice dropped on the sink 8 is swept away to the discharge port 9 by the water discharged from the shower spout 13 and the trough spout 14.

  Furthermore, as shown in FIG. 3 etc., the sink 8 is provided with the discharge chute 15 which carries the left rice and washing | cleaning wastewater discharged | emitted from the discharge port 9 to the cooking space 3 under the conveyor 7. FIG. As shown in FIG. 3, an opening 4a is formed in the wall 4 below the conveyor 7 so that the eating space 2 and the cooking space 3 communicate with each other, and a discharge chute 15 is formed in the opening 4a. It is inserted.

  In addition, as shown in FIG. 2 and FIG. 3, the lower part of the sink 8 is a space opened to the eating space 2 side. In this space, a tray on which tableware is placed up to the pre-cleaning device 6 is placed. A tray dispenser 18 with casters to be collected is accommodated. That is, the user of the cafeteria 1 can perform a series of operations in one place, such as washing away the remaining dishes from the sink 8, placing the dishes on the conveyor 7, and returning the empty tray to the tray dispenser 18. it can.

  Moreover, as shown in FIG. 3, FIG. 4, etc., the dining tableware washing | cleaning system 5 is a filtration apparatus 21 as a filtration means which filters the residual rice discharged | emitted from the discharge port 9 (discharge chute 15) of the sink 8, and washing | cleaning wastewater. And a circulation device 31 as a washing wastewater circulation means for supplying the washing wastewater filtered by the filtration device 21 to the shower water discharge port 13 and the trough water discharge port 14.

  The filtration device 21 receives leftovers and washing wastewater discharged from the outlet 9 of the sink 8 and carried to the cooking space 3 by the discharge chute 15, and a leftover filter 22 for removing the leftovers from the remaining rice and washing wastewater. And a water reservoir 23 for storing a certain amount of the washing wastewater filtered by the remaining rice filter 22. The water reservoir 23 is, for example, a stainless steel housing, and has a configuration in which the leftover filter 22 can be detachably fixed to the inside of the upper side via a support metal. In the water storage tank 23, a cleaning waste water storage volume is secured so that the waste water in the water storage tank 23 will not be dripped even if the cleaning waste water is pumped up to the upper shower spout 13 and trough spout 14 by a circulation pump 32 described later. In order to maintain the specified water level that can be achieved, an overflow pipe 24 that discharges only the cleaning waste water that exceeds the specified water level is provided upright from the bottom. The water storage tank 23 is provided corresponding to the circulation connection port 25 connected to the circulation device 31, and the cleaning wastewater stored in the water storage tank 23 is supplied to the circulation device 31 when the cleaning wastewater is supplied from the water storage tank 23. A strainer 26 is provided for removing finer leftovers contained therein.

  In addition, the storage tank 23 is arranged so that the lower part of the overflow pipe 24 is located immediately above the drainage groove 29 formed on the floor surface of the cooking space 3 when the dining tableware washing system 5 is in operation. The cleaning wastewater discharged from the pipe 24 is caused to flow into the sewage through the drainage groove 29 and the like. Further, the overflow pipe 24 is screwed onto a tapping having a female screw on the inner surface fixed in a watertight manner so that the male screw applied to the outer surface of one end protrudes below the bottom surface of the water storage basin 23. It can be fixed upright. As a result, the overflow pipe 24 is detachably attached to the water storage tank 23. By loosening the fastening of the overflow pipe 24 with, for example, a pipe wrench from above the opened water storage tank 23, the overflow pipe 24 is provided. Is removed from the water storage tank 23, so that all washing waste water stored in the water storage tank 23 can be drained from the water storage tank 23. When the overflow pipe 24 is frequently attached and removed, a drainage port that can be opened and closed is separately provided on the bottom surface of the water storage tank 23, and the drainage port is located above the drainage groove 29 formed on the floor surface of the cooking space 3. The drain outlet may be opened only when draining the stored washing wastewater. Further, the water reservoir 23 of the present embodiment includes a caster 27. For this reason, when cleaning the water storage basin 23 and its surroundings, the water storage basin 23 can be moved so as to facilitate the cleaning operation.

  The circulation device 31 includes a circulation pump 32, a circulation water pipe 33 that connects the circulation pump 32 and the water storage tank 23 (circulation connection port 25), and between the circulation pump 32, the shower water discharge port 13, and the trough water discharge port 14. The water discharge connecting pipe 34 is connected. Then, by driving the circulation pump 32, the cleaning wastewater stored in the reservoir 23 is discharged from the shower outlet 13 and the trough outlet 14 to the sink 8 through the circulation pipe 33 and the outlet connection pipe 34. After that, it returns (circulates) to the water reservoir 23 through the discharge port 9 and the discharge chute 15 of the sink 8. In addition, the washing | cleaning waste water (circulation water) circulated is mixed with the business detergent.

  In addition, at least a part of the circulating water pipe 33 is composed of a flexible hose, and is deformed / displaced following the movement of the water reservoir 23. Furthermore, the circulating water pipe 33 is detachably connected to the circulating connection port 25 of the water storage tank 23 by a coupler joint 35 (see FIG. 4).

  Moreover, in this embodiment, the supplementary water pipe 41 which can supply clean water with respect to the water storage tank 23 is provided. That is, in order to circulate water with the circulation pump 32 in the dining room dish washing system 5 when the dining room dish washing system 5 is operated for the first time, first, it is necessary to store water in the water storage tank 23. At this time, clean water is stored in the reservoir 23 through the makeup water pipe 41.

  Further, as shown in FIGS. 1 and 4, a water level sensor 42 capable of detecting that a specified amount of water has been stored in the water reservoir 23 and a makeup water pipe 41 can be opened and closed. A water supply electromagnetic valve 43 that closes the makeup water pipe 41 when it is detected that a prescribed amount of water has been stored in 23 is provided. The make-up water pipe 41 is connected to the water reservoir 23 at a position above the upper end of the overflow pipe 24 so that washing waste water does not flow into the make-up water pipe 41.

  In addition, at least a part of the makeup water pipe 41 is configured by a flexible hose so that it is deformed / displaced following the movement of the water reservoir 23. Further, the makeup water pipe 41 is detachably connected to the water reservoir 23 by a coupler joint 45 (see FIG. 4).

  Next, the flow of operation of the dining room dishwashing system 5 will be described. First, when the water reservoir 23 is empty in order to accept the user (dinner) in the cafeteria, the person concerned with the cafeteria (meal provider) can adjust the water supply solenoid valve at the start of the meal time. 43 is opened, and clean water is supplied to the reservoir 23 through the replenishing water pipe 41. When a certain amount of clean water is stored in the reservoir 23, the water supply electromagnetic valve 43 is automatically closed in response to detection by the water level sensor 42, and water supply is stopped.

  Thereafter, the conveyor 7 is driven and the circulation pump 32 is driven to circulate the water stored in the water reservoir 23. That is, the water stored in the water reservoir 23 is discharged from the shower spout 13 and the trough spout 14 to the sink 8 through the circulating water pipe 33 and the spout connection pipe 34, and the outlet 9 and discharge chute of the sink 8. 15, the water is collected (circulated) in the reservoir 23. In the present embodiment, the conveyor 7 and the circulation pump 32 are always driven and water is circulated until the meal time ends (until the last eater returns the tableware). In the present embodiment, the conveyor 7 and the circulation pump 32 can be started and stopped at respective timings.

  When the meal time ends, the conveyor 7 and the circulation pump 32 are stopped, the sink 8 is cleaned using the washing tap 11 and the like, and the residue (residual rice) of the leftover filter 22 is processed. Further, the cleaning wastewater stored in the water storage tank 23 is periodically drained, the circulation device 31 is drained, and the water storage tank 23 and its surroundings are cleaned.

  Although not shown in the drawings, the installation space for the water storage basin 23 of the present embodiment is sandwiched between work benches and pipes pass upward, so that the water storage basin 23 remains in the installation space. It is difficult to clean the scissors 23 and the like. Therefore, when cleaning the water storage basin 23, etc., the water storage basin 23, the drainage groove 29, etc. are cleaned after the water storage basin 23 is drawn from the installation space to the passage of the cooking space 3. In addition, about cleaning of the tableware washing system 5 for cafeterias, replacement of circulating water, etc., it is appropriately dealt with according to various situations on site, for example, when it is judged that the sewage concentration of circulating water is high. Alternatively, the cleaning wastewater stored in the water reservoir 23 may be removed every time the meal ends. Further, the water discharge connecting pipe 34 is regularly subjected to high pressure cleaning.

  Next, the flow of use of the dining table cleaning system 5 will be described. When the eater finishes the meal, he moves to a place where the pre-cleaning device 6 is located to return the tableware. In this embodiment, a meal container for placing food such as dishes and bowls, a meal tool for moving food such as chopsticks and spoons, and a tray for placing a plurality of meal containers and meal tools together. It is designed to be collected separately. First, the food utensils are returned to a dedicated collection stand (not shown) installed near the pre-cleaning device 6.

  In addition, the food container is placed on the conveyor 7 of the pre-cleaning device 6 and returned. At this time, if there is leftovers in the meal container, the remaining containers are dropped onto the sink 8 by turning the meal container over the sink 8 or the like. If leftover food still adheres to the food container, the washing tap 11 is opened and the remaining food is washed out from the food container with tap water. In addition, the remaining rice dropped on the sink 8 is pushed away to the discharge port 9 by the circulating water discharged from the shower water discharge port 13 and the trough water discharge port 14.

  In addition, the trays that have been emptied after the meal utensils and the meal containers are returned are returned to the tray dispenser 18 housed below the sink 8. A gap into which the tray can be inserted is formed between the upper surface of the tray dispenser 18 and the lower surface of the sink 8. The tray is inserted into the gap without pulling out the tray dispenser 18. It is placed on the dispenser 18 and returned. As described above, the return of the user's tableware is completed. In addition, when a hand becomes dirty at the time of a meal, tableware return, etc., it is also possible to open the washing tap 11 and wash the hand.

  As described in detail above, in this embodiment, the washing wastewater discharged from the discharge port 9 of the sink 8 together with the leftovers is filtered by the filter device 21, and then the shower spout 13 and the trough of the sink 8 are filtered by the circulation device 31. The leftover food supplied to the spout 14 and dropped on the sink 8 can be reused as water for flushing to the discharge port 9. Accordingly, the amount of clean water used can be remarkably reduced, and the cost can be reduced and the environmental load related to the production of clean water can be reduced.

  Also, the water that is used to wash away leftovers from tableware is clean water. For this reason, it is possible to prevent a situation in which the washing waste water adheres to the user's hand or the tableware when the remaining rice is washed away from the tableware. Therefore, the user's sanitary environment can be suitably maintained while utilizing the cleaning wastewater. Furthermore, since the clean water discharged from the washing faucet 11 in order to flow the remaining rice from the tableware is mixed with the circulating water circulating in the dining tableware washing system 5 to become washing waste water, each time the remaining rice is poured into the sink 8 Moreover, the situation where the sewage density | concentration of circulating water raises remarkably can be suppressed.

  Moreover, in this embodiment, the washing faucet 11 is equipped with the lever 12, and it is comprised so that the washing faucet 11 can be opened and closed by the eater. For this reason, clean water can be discharged from the washing tap 11 only when necessary. That is, when the user does not use the pre-cleaning device 6 or when the user finishes the meal and returns the tableware without taking out the leftover food, it is not necessary to use clean water. Therefore, the amount of clean water used can be further reduced as compared with the case where clean water is constantly discharged from the washing tap 11.

  Further, the water reservoir 23 is provided with a caster 27 so as to be movable. For this reason, cleaning of the water storage tank 23 and the peripheral part (drainage groove 29 etc.) of the water storage tank 23 can be performed more smoothly and more carefully. Moreover, even if it becomes difficult to contact the water storage tank 23 by setting the installation space of the water storage tank 23 at a position that does not interfere with the work in the cooking space 3, the operation of the dishwasher dish washing system 5 is stopped. Thereafter, the water storage tank 23 can be pulled out of the installation space, and the water storage tank 23 and the installation space of the water storage tank 23 can be cleaned relatively easily. Therefore, even if the tableware cleaning system 5 for canteens is installed, it is possible to prevent the workability in the cooking space 3 from deteriorating while keeping the sanitary environment of the cooking space 3 suitable.

  In addition, the circulating water pipe 33 and the makeup water pipe 41 connected to the water storage tank 23 are detachably connected to the water storage tank 23 by coupler joints 35 and 45. For this reason, the cleaning in the pipe connected to the water storage tank 23 can be performed more smoothly and more carefully.

  In addition, the water storage tank 23 of the filtration device 21 includes an overflow pipe 24 that discharges the cleaning wastewater that exceeds the specified water level when the stored cleaning wastewater exceeds the specified water level. For this reason, oil or relatively small dust that has passed through the leftover filter 22 and floated in the water storage tank 23 can be effectively discharged from the overflow pipe 24. Therefore, the amount of oil and dust contained in the circulating water can be reduced.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the washing faucet 11 includes the lever 12, but is not particularly limited to such a configuration. For example, the cleaning faucet 11 includes a rotary handle or button, and can be used to operate the lever or button. It may be configured to open and close accordingly. In addition, for example, a sensor (for example, an infrared sensor) is provided as a detecting means capable of detecting the tableware provided below the faucet of the washing faucet 11, and the washing faucet 11 opens and closes in response to the detection of the sensor. You may comprise. Thus, even when the sensor is used instead of the lever 12, there is no leftover in the tableware, and the user's operation of returning the tableware as it is is not detected, and the operation of dropping the leftover from the tableware to the sink 8 is performed. By detecting so that the amount of clean water discharged from the washing faucet 11 can be reliably reduced. Even if the washing faucet 11 is of a handle type or a button type, the user can automatically enter the closed state even if the user does not perform the closing operation after the washing faucet 11 is opened. You may employ | adopt the thing of such a structure.

  (B) In the above embodiment, when the water supply electromagnetic valve 43 is closed in accordance with the detection of the water level sensor 42, the conveyor 7 and the circulation pump 32 may start driving automatically. . In the above embodiment, the water level sensor 42 and the water supply electromagnetic valve 43 may be omitted, and the makeup water pipe 41 may be manually opened and closed.

  Further, the remaining rice filter 22 may be configured not to be immersed in the washing waste water stored in the water storage tank 23 (positioned above the upper end portion of the overflow pipe 24). When adopting this configuration, it is desirable that the lower part of the leftover filter 22 is located inside the water storage tank 23 so that the washing wastewater filtered by the leftover filter 22 is not scattered. As a matter of course, as in the above embodiment, the waste filter 22 is configured so that the entire remaining rice filter 22 is located inside the water storage tank 23, so that the effect of preventing the washing waste water from scattering can be further enhanced. In addition, it is possible to temporarily install another leftover filter 22 on the upstream side of the leftover filter 22 so that the leftover process of the leftover filter 22 can be performed smoothly even during the operation of the dishwashing dish washing system 5. It is good also as providing an installation part.

  In the above embodiment, a drain outlet is formed on the bottom surface of the water reservoir 23 and the overflow pipe 24 is detachably attached thereto via tapping. However, the configuration related to drainage of the water reservoir 23 is limited. It is not something. For example, a drainage outlet for discharging cleaning wastewater exceeding a certain water level is formed on the side surface of the water storage tank 23, and a drainage outlet for discharging all cleaning wastewater stored in the bottom surface of the water storage tank 23 is formed. It is good to do. However, by adopting a configuration in which the overflow pipe 24 is provided to the discharge port formed on the bottom surface of the water storage tank 23 as in the above embodiment, the cleaning wastewater discharged by exceeding a certain water level can Even if no piping is provided, the water can be discharged to the drainage groove 29 while suppressing scattering. In addition, the drainage of the reservoir 23 is only one, and the overflow pipe 24 is attached to the drainage groove, so that a certain amount of washing wastewater can be reliably stored in the reservoir 23. Can be prevented.

  (C) In the above embodiment, supply amount control means for controlling the amount of water discharged from the trough water outlet 14 may be provided. For example, when a water storage section is provided corresponding to the trough water outlet 14 or a water discharge connecting pipe 34 is provided exclusively, or when the use of the user is detected from the trough water outlet 14, You may comprise so that circulating water may be discharged to the sink 8 or the amount of water discharged from the trough water outlet 14 may be increased. In addition, as in the above embodiment, by continuously circulating the circulating water at a constant speed or higher in the circulating path of the circulating water, it is possible to suppress a situation such as dust adhering in the pipe of the circulating path. . Moreover, the shape, size, and number of the trough water discharge ports 14 are not particularly limited. For example, a plurality of trough water discharge ports 14 may be provided with a predetermined interval, or may be formed in a slit shape.

  (D) In the above embodiment, the embodiment is embodied in an employee cafeteria in a company, but can also be applied to a student cafeteria in a school, an employee dormitory, a cafeteria in a student dormitory, or the like.

  DESCRIPTION OF SYMBOLS 1 ... Dining room, 5 ... Dining table washing system, 6 ... Pre-cleaning apparatus, 8 ... Sink, 9 ... Discharge port, 11 ... Cleaning faucet, 12 ... Lever, 13 ... Shower spout, 14 ... Trough spout, 21 DESCRIPTION OF SYMBOLS ... Filtration apparatus, 22 ... Remnant filter, 23 ... Reservoir, 24 ... Overflow pipe, 27 ... Caster, 31 ... Circulation device, 32 ... Circulation pump, 35 ... Coupler joint.

Claims (5)

In a dining room dishwashing system equipped with a pre-cleaning device that allows the user to wash away the leftovers of tableware when the user of the dining room returns the tableware,
The pre-cleaning device is
A sink,
Washing water supply means capable of discharging clean water for washing off the leftovers of the dishes on the sink;
Excluding water supply means capable of discharging water for flushing the remaining food dropped on the sink to the outlet of the sink,
A filtering means for filtering residual rice and washing wastewater discharged from the outlet of the sink;
A dishwashing dish washing system comprising: a washing wastewater circulation means for supplying washing wastewater filtered by the filtering means to the reject water supply means. The filtering means includes
A leftover filter for removing leftovers from the discharge and washing wastewater discharged from the outlet of the sink;
The waste water filtered by the left rice filter has a water storage tank that stores a certain amount of water by drainage through an overflow pipe, and the left food filter is located inside the water storage tank upper side,
2. The dining tableware washing system according to claim 1, wherein the washing waste water circulation means sucks washing waste water from the reservoir by a circulation pump and supplies the suction waste water supply means to the waste water supply means. The overflow pipe is
A single pipe with a male thread at one end,
The reservoir is
A tapping having a female screw to which the overflow pipe can be screwed to the bottom,
A fixed amount of washing waste water can be stored by screwing the overflow pipe upright,
3. The dining tableware cleaning system according to claim 2, wherein the cleaning waste water collected in the water storage tank can be drained by loosening and removing the overflow pipe. The filtering means includes
The water reservoir is configured to be movable with a caster,
4. The dining tableware washing system according to claim 2 or 3, wherein the lower part of the overflow pipe of the water storage tank is installed immediately above the drainage groove of the cooking space during operation. The washing water supply means
The operation means operable by the user, or a detection means capable of detecting the operation of the user inserting the tableware near the water discharge position of the cleaning water supply means,
According to the operation to the operation means or the detection by the detection means, it is configured to be switchable between an open state for discharging clean water and a closed state for stopping clean water. The dining tableware washing system according to any one of claims 1 to 4.

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