A recycling water-saving device and a kitchen system using the same

Abstract

The present application relates to kitchen waste recycling water-saving device field, especially to a kind of circulating water-saving device and the kitchen system using the device, comprising: cooking bench, the cooking bench top end is provided with gas stove and water reservoir, the cooking bench side wall is provided with cold water supply pipe;Drainage groove, the drainage groove is opened in cooking bench end, the first drain pipe is fixedly connected with the drainage groove bottom end.This application is provided with first drain pipe, circulating pipe, drain pipe, turbidity sensor and three-way electromagnetic ball valve, when the turbidity value of first drain pipe exceeds threshold value, three-way electromagnetic ball valve is started, circulating pipe waterway is closed, drain pipe waterway is opened, drainage path is switched, to avoid sewage pollution to circulating water, when turbidity value restores threshold value, three-way electromagnetic ball valve is started, circulating pipe waterway is opened, drain pipe waterway is closed, circulating drainage path is switched, first drain pipe is discharged into clean water to circulating pipe, to realize energy-saving water use.

Description

Technical Field

[0001] This invention relates to the field of kitchen waste recycling and water-saving devices, and more particularly to a recycling-type water-saving device and a kitchen system using the device. Background Technology

[0002] The wok stove in the restaurant is one of the most commonly used kitchen equipment and an indispensable tool in the kitchen. At present, the wok stoves on the market have basically the same structure. The structure is that the stove body has a burner inside, and the wok is placed on the stove body. The heat generated by the burner heats the wok, and the high-temperature exhaust gas generated is directly discharged outside the stove.

[0003] For example, the invention patent with publication number CN117869956B discloses an intelligent kitchen cooking stove, which relates to the field of kitchen equipment technology; while the present invention includes a stove base and two stove bodies, the two stove bodies are installed on the upper surface of the stove base, a water tank is fixedly installed on the upper surface of the stove base, an L-shaped equipment plate is fixedly installed on one side of the stove base, a faucet is rotatably installed on one side of the L-shaped equipment plate, a U-shaped water baffle is fixedly installed on the upper surface of the stove base, and several evenly distributed drainage grooves are opened on both sides of the U-shaped water baffle. A collection box is fixedly installed on both sides of the stove base, and the drainage grooves are connected to the inner cavity of the collection box.

[0004] The above cases still have the following shortcomings:

[0005] For example, when using a wok stove for stir-frying over high heat for an extended period, the cold water tap needs to be turned on to continuously run cold water and lower the countertop temperature. At the same time, to save water, the released cold water will be reused through the circulation pipe. However, during the stir-frying process, it is inevitable to wash the pan. Since the pan contains oil stains and food residue, when washing the pan, the oil stains and food residue will be discharged into the circulation pipe along with the water flow, which can easily cause contamination.

[0006] To address these issues, the present invention proposes a circulating water-saving device and a kitchen system using the device. Summary of the Invention

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a circulating water-saving device and a kitchen system using the device, comprising: a stove, wherein a gas stove and a water storage tank are provided at the top of the stove, and a cold water supply pipe is provided on the side wall of the stove;

[0008] A drainage trough is provided at the end of the stove, and a first drain pipe is fixedly connected to the bottom end of the drainage trough.

[0009] A connecting pipe is fixedly connected to the bottom end of the first drain pipe, a circulation pipe is fixedly connected to the side of the connecting pipe, and a sewage pipe is fixedly connected to the bottom end of the connecting pipe.

[0010] A hot water supply pipe is installed on the side wall of the stove and is connected to a circulating water circuit.

[0011] A three-way solenoid ball valve is installed inside the connecting pipe and is used to switch the drainage path.

[0012] A turbidity sensor is installed at the top of the first drain pipe to detect the turbidity value inside the first drain pipe. When the turbidity value exceeds the threshold, the three-way solenoid ball valve is activated to switch the drainage path, thereby closing the circulation pipe and opening the sewage pipe.

[0013] Preferred options also include:

[0014] A filter plate is rotatably connected to the inner wall of the top of the drain trough, and a drive motor is fixedly connected to the side wall of the stove. The output shaft of the drive motor is coaxially fixed with the filter plate.

[0015] A slag discharge trough is provided on the side wall of a drainage trough;

[0016] A collection box, which is slidably snapped onto the end of the stove, is used to collect food residue from the filter plate;

[0017] When the turbidity value exceeds the threshold, the output shaft of the drive motor rotates to tilt the filter plate.

[0018] Preferred options also include:

[0019] A fixed frame is fixedly connected to the end of the stove, and the collection box is slidably snapped into the fixed frame. The bottom plate of the collection box is a filter screen.

[0020] The second drain pipe has its top end fixedly connected to the bottom end of the fixed frame, and its bottom end fixedly connected to the sewage pipe.

[0021] Preferred options also include:

[0022] Piston plate, which is slidably and sealingly connected within the water storage tank;

[0023] A connecting rod, the top end of which is fixedly connected to the bottom end of the piston plate, and a pushing assembly is provided at the bottom end of the connecting rod;

[0024] When the turbidity value exceeds the threshold, the actuator pushes the piston plate upward to push the residual water in the water storage tank out of the tank, reducing the volume of the water storage tank and quickly replacing the sewage in the tank.

[0025] Preferably, the actuating component includes:

[0026] A rotating disc is rotatably connected inside the stove. A rotating shaft is fixedly connected to the bottom end of the rotating disc. A push rod is rotatably connected to the surface of the rotating shaft. The top end of the push rod is rotatably connected to the bottom end of a connecting rod.

[0027] A transmission assembly for driving the rotary disk to rotate.

[0028] Preferably, the transmission assembly includes a timing belt, one end of which is connected to a first pulley on the rotating shaft of the rotating disk, and the other end of which is connected to a second pulley on the rotating shaft of the filter plate.

[0029] Preferably, the upper surface of the filter plate is provided with an oleophobic layer.

[0030] In addition, the present invention also proposes a kitchen system, including a circulating water-saving device, and a number of exhaust holes, wherein the array of the number of exhaust holes is formed on the side wall of the gas stove;

[0031] The flue has one end connected to the gas stove to exhaust the flue gas from the gas stove, and the other end connected to a heat exchange shell, which is fixedly connected inside the stove. An exhaust pipe is fixedly connected to the top of the heat exchange shell.

[0032] A serpentine tube is located inside the heat exchange shell. One end of the serpentine tube is fixedly connected to the circulation pipe, and the other end is connected to the hot water supply pipe.

[0033] Preferably, a first partition is fixedly connected in an array inside the heat exchange shell, and a second partition is fixedly connected between the two first partitions. A first air hole is opened at the right end of the first partition, and a second air hole is opened at the left end of the second partition.

[0034] Preferably, a branch pipe is fixedly connected to the side wall of the hot water supply pipe, and the branch pipe is connected to an external insulated water tank.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] I. This invention, by setting up a first drain pipe, a circulation pipe, a sewage pipe, a turbidity sensor, and a three-way solenoid ball valve, activates the three-way solenoid ball valve when the turbidity value of the first drain pipe exceeds a threshold, closing the circulation pipe and opening the sewage pipe, thus switching the drainage path and preventing sewage from contaminating the circulating water. When the turbidity value returns to the threshold, the three-way solenoid ball valve is activated again, opening the circulation pipe and closing the sewage pipe, thus switching the circulation drainage path. The first drain pipe discharges clean water into the circulation pipe, thereby achieving energy-saving water use.

[0037] Second, this invention, by setting up a filter plate and a collection box, when the turbidity value exceeds the threshold, drives the output shaft of the motor to rotate, causing the filter plate to tilt so that the bottom of the filter plate is below the sludge discharge trough, thereby guiding the filtered residue into the collection box. This reduces clogging and prevents the residue on the filter plate from continuously affecting the detection results of the turbidity sensor, thus avoiding water waste. When the turbidity value returns to the threshold, the output shaft of the motor rotates, causing the filter plate to be horizontal, and the sludge discharge trough to be below the filter plate, preventing water from being discharged directly into the collection box without time to flow away, thus avoiding water waste.

[0038] Third, by setting a second drain pipe, when the filter plate is tilted, some water will enter the collection box. Through the filter hole at the bottom of the collection box, the sewage in the collection box is discharged into the sewage pipe through the second drain pipe, thereby achieving solid-liquid separation.

[0039] Fourth, this invention, by setting a piston plate, when the turbidity value exceeds the threshold, pushes the piston plate upward to push the residual water in the water storage tank out of the tank, reducing the tank volume. On the one hand, this facilitates the rapid replacement and discharge of sewage and residue in the tank, allowing the sewage to be discharged into the drainage ditch. On the other hand, during the process of the piston discharging water from the tank, the surface of the stove is subjected to increased water flow force, which helps to quickly wash oil stains and residues on the stove surface into the drainage ditch, achieving rapid cleaning of the stove surface and reducing sewage discharge time, thereby reducing water waste. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0041] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0042] Figure 3 This is a cross-sectional view of the stove in this invention. Figure 1 ;

[0043] Figure 4 for Figure 3 Enlarged at point A in the middle;

[0044] Figure 5 This is a cross-sectional view of the stove in this invention. Figure 2 ;

[0045] Figure 6 This is a schematic diagram showing the connection between the rotating disk and the push rod in this invention;

[0046] Figure 7 This is a schematic diagram showing the connection between the gas stove and the flue in this invention;

[0047] Figure 8 This is a schematic diagram showing the connection between the serpentine tube and the heat exchange shell in this invention.

[0048] In the diagram: 1. Stove; 2. Gas stove; 3. Water tank; 4. Cold water supply pipe; 5. Hot water supply pipe; 6. Drainage trough; 7. First drain pipe; 8. Connecting pipe; 9. Circulation pipe; 10. Sewage pipe; 11. Three-way solenoid ball valve; 12. Turbidity sensor; 13. Filter plate; 14. Drive motor; 15. Slag discharge trough; 16. Collection box; 17. Fixing frame; 18. Second drain pipe; 19. Piston plate; 20. Connecting rod; 21. Rotary disc; 22. Push rod; 23. Synchronous belt; 24. Smoke vent; 25. Flue; 26. Heat exchange shell; 27. Serpentine tube; 28. First partition; 29. ​​First vent; 30. Second partition; 31. Second vent; 32. Branch pipe; 33. Smoke vent. Detailed Implementation

[0049] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0050] like Figures 1 to 8 The circulating water-saving device shown is characterized by comprising:

[0051] Stove 1, with a gas stove 2 and a water storage tank 3 installed at the top of stove 1, and a cold water supply pipe 4 installed on the side wall of stove 1, with a cold water valve installed at the end of the cold water supply pipe 4.

[0052] Drainage trough 6 is located at the end of the stove 1, and the bottom end of drainage trough 6 is fixedly connected to the first drain pipe 7.

[0053] Connecting pipe 8 is fixedly connected to the bottom end of the first drain pipe 7. A circulation pipe 9 is fixedly connected to the side of the connecting pipe 8, and a sewage pipe 10 is fixedly connected to the bottom end of the connecting pipe 8.

[0054] Hot water supply pipe 5 is installed on the side wall of stove 1. Hot water supply pipe 5 is connected to the water circuit of circulation pipe 9. A hot water valve is installed at the end of hot water supply pipe 5.

[0055] The three-way solenoid ball valve 11 is installed inside the connecting pipe 8 and is used to switch the drainage path. The model number of the three-way solenoid ball valve 11 is Q944F.

[0056] Turbidity sensor 12 is installed at the top of the first drain pipe 7 to detect the turbidity value in the first drain pipe 7. When the turbidity value exceeds the threshold, the three-way solenoid ball valve 11 is activated by the external PLC controller (model Siemens S7-1200) to switch the drainage path, so that the water circuit of the circulation pipe 9 is closed and the water circuit of the sewage pipe 10 is opened. The model of turbidity sensor 12 is InPro8200.

[0057] In existing technologies, it is inevitable to wash the pan during cooking. Since the pan contains oil and food residue, these residues are washed into the circulation pipes along with the water, easily causing contamination. This technical solution can solve the above problems. The specific operation is as follows:

[0058] During the cooking process, the cold water valve is opened, allowing the cold water supply pipe 4 to continuously inject cold water into the water storage tank 3. After the water storage tank 3 is full, the cold water flows into the top surface of the stove 1. This helps to lower the ambient temperature and reduce discomfort for people, and also lowers the surface temperature of the stove 1 to avoid high-temperature damage.

[0059] After the cold water flows into the top of the stove 1, it will gradually flow to the front of the stove 1 and enter the drain trough 6. Then, the cold water is guided to the connecting pipe 8 through the first drain pipe 7. Then, under the guidance of the three-way solenoid ball valve 11, the cold water flows to the hot water supply pipe 5 through the circulation pipe 9. Since the cold water will increase its own temperature while cooling the stove 1, it is beneficial to heat the circulating cold water. When hot water is needed, the hot water valve is turned on.

[0060] During the continuous discharge of water from the first drain pipe 7, the turbidity of the water flow in the first drain pipe 7 is detected in real time by the turbidity sensor 12. If cold water is used to wash the pot, oil stains or food residue will enter the first drain pipe 7, causing the turbidity value to increase. When the turbidity value exceeds the threshold, the three-way solenoid ball valve 11 is activated to close the water circuit of the circulation pipe 9 and open the water circuit of the sewage pipe 10, switching the sewage discharge path. The sewage from the first drain pipe 7 is discharged into the sewage pipe 10 and discharged through the sewage pipe 10 to avoid the sewage from polluting the recyclable water.

[0061] When the turbidity value returns to the threshold, the three-way solenoid ball valve 11 is activated to open the water circuit of the circulation pipe 9 and close the water circuit of the sewage pipe 10, switching the circulation drainage path. The first drain pipe 7 discharges clean water into the circulation pipe 9, thereby achieving energy-saving water use.

[0062] As a further embodiment of the present invention, it also includes:

[0063] The filter plate 13 is rotatably connected to the inner wall of the top of the drain trough 6. The drive motor 14 is fixedly connected to the side wall of the stove 1. The output shaft of the drive motor 14 is coaxially fixed with the filter plate 13.

[0064] Slag discharge trough 15 is provided on the side wall of drainage trough 6;

[0065] Collection box 16 is slidably attached to the end of stove 1 and is used to collect food residue on filter plate 13.

[0066] When the turbidity value exceeds the threshold, the output shaft of the drive motor 14 rotates to make the filter plate 13 tilted.

[0067] Specifically, by setting up a filter plate 13 and a collection box 16, when the turbidity value exceeds the threshold, the output shaft of the drive motor 14 rotates to tilt the filter plate 13, so that the sludge discharge trough 15 is located below the bottom of the filter plate 13 to guide the residue, thereby guiding the filtered residue into the collection box 16. This reduces clogging and prevents the residue on the filter plate 13 from continuously affecting the detection results of the turbidity sensor 12, thus avoiding water waste. When the turbidity value returns to the threshold, the output shaft of the drive motor 14 rotates to make the filter plate 13 horizontal, so that the sludge discharge trough 15 is located below the side of the filter plate 13, preventing water from being discharged directly into the collection box 16 through the sludge discharge trough 15, thus avoiding water waste.

[0068] It should be noted that the upper surface of the filter plate 13 is provided with an oleophobic layer to reduce the adhesion of oil and avoid affecting the detection results of the turbidity sensor 12.

[0069] As a further embodiment of the present invention, it also includes:

[0070] The fixed frame 17 is fixedly connected to the end of the stove 1. The collection box 16 is slidably snapped into the fixed frame 17. The bottom plate of the collection box 16 is a filter screen.

[0071] The second drain pipe 18 is fixedly connected at its top end to the bottom end of the fixed frame 17, and the bottom end of the second drain pipe 18 is fixedly connected to the sewage pipe 10.

[0072] Specifically, by setting up a second drain pipe 18, when the filter plate 13 is tilted, some water will enter the collection box 16. Through the filter hole at the bottom of the collection box 16, the sewage in the collection box 16 will be discharged into the sewage pipe 10 through the second drain pipe 18 (without passing through the turbidity sensor 12), thereby achieving solid-liquid separation.

[0073] As a further embodiment of the present invention, it also includes:

[0074] Piston plate 19 is sealed and slidably connected inside water storage tank 3;

[0075] The connecting rod 20 has its top end fixedly connected to the bottom end of the piston plate 19, and a pushing component is provided at the bottom end of the connecting rod 20.

[0076] When the turbidity value exceeds the threshold, the pusher pushes the piston plate 19 to move upward, so as to push the water remaining in the water storage tank 3 out of the water storage tank 3, reduce the volume of the water storage tank 3, and quickly replace the sewage in the water storage tank 3.

[0077] Specifically, during the washing process, some grease or food residue can easily enter the water storage tank 3. Because the water storage tank 3 has a certain volume, the water in it cannot become completely clean in a short time, causing the turbidity value to continuously exceed the threshold, thus wasting water. This technical solution can solve the above problem. The specific operation is as follows:

[0078] When the turbidity value exceeds the threshold, the pusher pushes the piston plate 19 upward to push the water remaining in the water storage tank 3 out of the water storage tank 3, reducing the volume of the water storage tank 3. On the one hand, this facilitates the rapid replacement and discharge of sewage and residue in the water storage tank 3, allowing the sewage in the water storage tank 3 to enter the drainage trough 6 for discharge. On the other hand, during the process of the piston plate 19 discharging water from the water storage tank 3, the surface of the stove 1 is subjected to the force of the water flow, which helps to quickly wash the oil stains and residue on the surface of the stove 1 into the drainage trough 6, thereby achieving rapid cleaning of the surface of the stove 1, reducing the sewage discharge time, and thus helping to reduce the waste of water resources.

[0079] When the turbidity value returns to the threshold, the piston plate 19 moves downward to restore the volume of the water storage tank 3, which on the one hand meets the water needs of the staff, and on the other hand prepares for the next cleaning of the stove surface 1.

[0080] As a further embodiment of the present invention, the driving component includes:

[0081] Rotary disc 21 is rotatably connected inside stove 1. A rotating shaft is fixedly connected to the bottom of the rotating disc 21. A push rod 22 is rotatably connected to the surface of the rotating shaft. The top of the push rod 22 is rotatably connected to the bottom of the connecting rod 20.

[0082] A transmission assembly is used to drive the rotary disk 21 to rotate.

[0083] The transmission assembly includes a timing belt 23, one end of which is connected to a first pulley on the rotating shaft of the rotating disk 21, and the other end is connected to a second pulley on the rotating shaft of the filter plate 13.

[0084] Specifically, during the rotation of the output shaft of the drive motor 14, the filter plate 13 rotates, and under the transmission of the synchronous belt 23, the rotating disk 21 rotates, causing the push rod 22 to rotate, thereby pushing the connecting rod 20 to move upward, causing the piston plate 19 to move upward, so as to discharge the sewage in the water storage tank 3.

[0085] To address the aforementioned issues, this invention also proposes a kitchen system utilizing a circulating water-saving device, comprising: several exhaust vents 24 arrayed on the side wall of a gas stove 2; a flue 25, one end of which is connected to the gas stove 2 for discharging the flue gas from the gas stove 2, and the other end connected to a heat exchange shell 26 fixedly connected inside the stove 1, with an exhaust pipe 33 fixedly connected to the top of the heat exchange shell 26; a serpentine pipe 27 located inside the heat exchange shell 26, one end of which is fixedly connected to a circulation pipe 9, and the other end connected to a hot water supply pipe 5; and a branch pipe 32 fixedly connected to the side wall of the hot water supply pipe 5, the branch pipe 32 being connected to an external insulated water tank.

[0086] Specifically, during the cooking process, the flue gas from the gas stove 2 is discharged into the heat exchange shell 26 through the flue 25. An oil removal plate is added inside the flue 25 to remove grease from the flue gas. In addition, a flue gas cooling coil is added at the inlet of the heat exchange shell 26 to pre-cool the gas to below 150°C. The water in the serpentine tube 27 is continuously heated through the heat exchange shell 26 to achieve waste heat recovery. The heated water enters the insulated water tank through the branch pipe 32 for storage. When other kitchen appliances need to use hot water, such as dishwashers, the hot water in the insulated water tank is delivered to the dishwasher through an external water pump for use.

[0087] As a further embodiment of the present invention, a first partition 28 is fixedly connected in an array inside the heat exchange shell 26, and a second partition 30 is fixedly connected between the two first partitions 28. A first vent 29 is opened at the right end of the first partition 28, and a second vent 31 is opened at the left end of the second partition 30.

[0088] Specifically, by setting the first baffle 28 and the second baffle 30, the flue gas flows upward along a serpentine flow trajectory, thereby extending the heat exchange area and improving the heat exchange efficiency.

[0089] The working principle of this invention is as follows: During the cooking process, the cold water valve is opened, so that the cold water supply pipe 4 continuously injects cold water into the water storage tank 3. After the water storage tank 3 is full, the cold water flows into the top surface of the stove 1. On the one hand, this helps to reduce the ambient temperature and reduce the discomfort of people, and on the other hand, it reduces the surface temperature of the stove 1 and avoids high temperature damage.

[0090] After cold water flows into the top of the stove 1, it will gradually flow to the front of the stove 1 and enter the drain trough 6. Then, through the first drain pipe 7, the cold water is guided to the connecting pipe 8. Then, under the guidance of the three-way solenoid ball valve 11, the cold water flows through the circulation pipe 9 to the hot water supply pipe 5. Since the cold water will increase its own temperature while cooling the stove 1, it is beneficial to heat the circulating cold water. When hot water is needed, the hot water valve is opened.

[0091] During the continuous discharge of water from the first drain pipe 7, the turbidity of the water flow in the first drain pipe 7 is detected in real time by the turbidity sensor 12. If cold water is used to wash the pot, oil stains or food residue will enter the first drain pipe 7, causing the turbidity value to increase. When the turbidity value exceeds the threshold, the three-way solenoid ball valve 11 is activated to close the water circuit of the circulation pipe 9 and open the water circuit of the sewage pipe 10, switching the sewage discharge path. The sewage from the first drain pipe 7 is discharged into the sewage pipe 10 and discharged through the sewage pipe 10 to avoid the sewage from polluting the recyclable water.

[0092] When the turbidity value returns to the threshold, the three-way solenoid ball valve 11 is activated to open the water circuit of the circulation pipe 9 and close the water circuit of the sewage pipe 10, switching the circulation drainage path. The first drain pipe 7 discharges clean water into the circulation pipe 9, thereby achieving energy-saving water use.

[0093] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A circulating water-saving device, characterized in that, include: A stove (1) is provided with a gas stove (2) and a water storage tank (3) at the top of the stove (1), and a cold water supply pipe (4) is provided on the side wall of the stove (1). Drainage trough (6), the drainage trough (6) is located at the end of the stove (1), and the bottom end of the drainage trough (6) is fixedly connected to the first drainage pipe (7). A connecting pipe (8) is fixedly connected to the bottom end of the first drain pipe (7), a circulation pipe (9) is fixedly connected to the side of the connecting pipe (8), and a sewage pipe (10) is fixedly connected to the bottom end of the connecting pipe (8). Hot water supply pipe (5), the hot water supply pipe (5) is installed on the side wall of the stove (1), and the hot water supply pipe (5) is connected to the circulation pipe (9) water circuit; A three-way solenoid ball valve (11) is installed inside the connecting pipe (8) and is used to switch the drainage path; Turbidity sensor (12) is set at the top of the first drain pipe (7) to detect the turbidity value in the first drain pipe (7). When the turbidity value exceeds the threshold, the three-way solenoid ball valve (11) is activated to switch the drainage path, so that the water circuit of the circulation pipe (9) is closed and the water circuit of the sewage pipe (10) is opened. It also includes: a filter plate (13), which is rotatably connected to the inner wall of the top of the drain trough (6), and a drive motor (14) is fixedly connected to the side wall of the stove (1), and the output shaft of the drive motor (14) is coaxially fixed with the filter plate (13); Slag discharge trough (15), the slag discharge trough (15) is opened on the side wall of the drainage trough (6); Collection box (16) is slidably attached to the end of the stove (1) for collecting food residue on the filter plate (13); when the turbidity value exceeds the threshold, the output shaft of the drive motor (14) rotates so that the filter plate (13) is tilted. It also includes: a fixed frame (17), which is fixedly connected to the end of the stove (1), and the collection box (16) is slidably snapped into the fixed frame (17), and the bottom plate of the collection box (16) is a filter screen plate; The second drain pipe (18) has its top end fixedly connected to the bottom end of the fixed frame (17), and its bottom end is fixedly connected to the sewage pipe (10). It also includes: a piston plate (19), which is sealed and slidably connected in the water storage tank (3); A connecting rod (20) is fixedly connected at its top end to the bottom end of a piston plate (19), and a pushing assembly is provided at the bottom end of the connecting rod (20). When the turbidity value exceeds the threshold, the pusher pushes the piston plate (19) to move upward, so as to push the water remaining in the water storage tank (3) out of the water storage tank (3) and reduce the volume of the water storage tank (3) so as to quickly replace the sewage in the water storage tank (3).

2. The circulating water-saving device according to claim 1, characterized in that, The pushing component includes: a rotating disk (21), which is rotatably connected to the stove (1), a rotating shaft is fixedly connected to the bottom end of the rotating disk (21), a push rod (22) is rotatably connected to the surface of the rotating shaft, and the top end of the push rod (22) is rotatably connected to the bottom end of the connecting rod (20); A transmission assembly for driving the rotating disk (21) to rotate.

3. The circulating water-saving device according to claim 2, characterized in that, The transmission assembly includes a timing belt (23), one end of which is connected to a first pulley on the rotating shaft of the rotating disk (21), and the other end is connected to a second pulley on the rotating shaft of the filter plate (13).

4. The circulating water-saving device according to claim 3, characterized in that, The filter plate (13) has an oleophobic layer on its upper surface.

5. A kitchen system, characterized in that, The device includes a circulating water-saving device as described in any one of claims 1-4, and further includes a plurality of exhaust holes (24), wherein the plurality of exhaust holes (24) are arrayed on the side wall of the gas stove (2); The flue (25) is connected to the gas stove (2) at one end and is used to discharge the flue gas from the gas stove (2). The other end is connected to the heat exchange shell (26), which is fixedly connected inside the stove (1). The top of the heat exchange shell (26) is fixedly connected to the exhaust pipe (33). The serpentine tube (27) is located inside the heat exchange shell (26). One end of the serpentine tube (27) is fixedly connected to the circulation pipe (9), and the other end is connected to the hot water supply pipe (5).

6. A kitchen system according to claim 5, characterized in that, The heat exchange shell (26) is fixedly connected with a first partition (28), and a second partition (30) is fixedly connected between the two first partitions (28). A first air hole (29) is opened at the right end of the first partition (28), and a second air hole (31) is opened at the left end of the second partition (30).

7. A kitchen system according to claim 6, characterized in that, The hot water supply pipe (5) has a branch pipe (32) fixedly connected to its side wall, and the branch pipe (32) is connected to an external insulated water tank.

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