Automatic water feeding and discharging device and system for sweeping robot

Abstract

The invention discloses an automatic water feeding and discharging device for a sweeping robot. The water level control valve is arranged in the main body water tank and is connected with a household tap water pipeline through a water pipe quick connector; the floater water level control mechanism comprises a floater and a connecting rod and is used for controlling opening and closing of the water level control valve according to water level changes in the main water tank; the clear water adding assembly comprises a clear water adding nozzle, a clear water adding hose and a pressure valve, the clear water adding hose is communicated with the main body water tank and the clear water adding nozzle, and the pressure valve is arranged on the clear water adding hose; the sewage discharging assembly comprises a sewage discharging nozzle, a sewage discharging hose and a three-way connector, the sewage discharging hose is communicated with the sewage discharging nozzle and the three-way connector, and the three-way connector is connected with a household sewage pipeline through a sewage discharging pipe; the butt joint detection electrode is arranged on the front side of the device and used for making contact with a host charging pole piece and forming a short circuit signal to trigger a host to start a water feeding and discharging process. The device is ingenious in structure, small in size and free of a power supply, two water tanks are arranged, and the cost of the device is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of sweeping robots, and in particular to an automatic water supply and discharge device for a household sweeping robot. Background Art

[0002] Smart robot vacuums, thanks to their simple operation and convenience, have become increasingly popular, becoming a common household appliance for office workers and modern families. While operating, the main unit requires its own supply of clean water. After cleaning, the main unit also collects some wastewater, which is stored in its wastewater tank. Due to the limited size of the main unit, the capacity of the clean water and wastewater tanks is generally very small, severely limiting the main unit's operating time.

[0003] The current market solution for adding clean water and draining wastewater to the host is to design a dedicated base station with a dedicated clean water tank and wastewater tank inside. The clean water tank provides clean water to the host, while the wastewater tank collects wastewater from the host. Dedicated clean water and wastewater connections are provided between the host and the base station for adding clean water and draining wastewater.

[0004] This technical solution has certain advantages, that is, the clean water tank and sewage tank installed in the base station are generally large in capacity, which can collect the clean water and sewage required for the host to perform several cycles of work.

[0005] However, the drawback is that the large amount of clean water and sewage stored in the base station will be stored for a long time, especially the sewage, which will pollute the environment and air. It also needs to be cleaned regularly by humans. If the cleaning is forgotten, the base station or even the host will not be able to continue working. Summary of the Invention

[0006] The object of the present invention is to provide an automatic water supply and discharge device for a sweeping robot, so as to improve the cleaning and sewage treatment efficiency of the sweeping robot.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: An automatic water supply and discharge device for a sweeping robot, comprising: Main water tank, used to store clean water; A water level control valve is provided in the main water tank and is connected to the household tap water pipe via a water pipe quick connector; The float water level control mechanism includes a float and a connecting rod, and is used to control the opening and closing of the water level control valve according to the water level changes in the main water tank; A fresh water adding assembly includes a fresh water adding nozzle, a fresh water adding hose, and a pressure valve. The fresh water adding hose connects the main water tank and the fresh water adding nozzle, and the pressure valve is provided on the fresh water adding hose. A sewage discharge assembly includes a sewage discharge nozzle, a sewage discharge hose, and a tee joint. The sewage discharge hose connects the sewage discharge nozzle and the tee joint, and the tee joint is connected to the household sewage pipe through the sewage discharge pipe; The docking detection electrode is located on the front of the device and is used to contact the charging electrode of the host and form a short-circuit signal, triggering the host to start the water supply and drainage process.

[0008] Furthermore, the sewage hose is provided with a first one-way valve to prevent sewage from flowing back.

[0009] Furthermore, an overflow pipe is provided in the main water tank, and the overflow pipe is connected to the three-way joint through a second one-way valve.

[0010] Furthermore, the height of the overflow pipe outlet is higher than the normal working water level of the main water tank and lower than the top of the water tank.

[0011] Furthermore, the water level control valve is a mechanical float valve, which controls the opening and closing of the valve by driving a connecting rod through the rise and fall of the float.

[0012] Furthermore, a float positioning rod is provided at the bottom of the main water tank.

[0013] Furthermore, the pressure valve is a normally closed diaphragm valve, and the opening pressure threshold matches the negative pressure range of the host water suction pump.

[0014] Furthermore, the docking detection electrode is an elastic metal sheet, which is short-circuited internally and is used to send an electrical signal indicating successful docking to the host.

[0015] Furthermore, the device as a whole does not require an external power supply and relies on the negative pressure and sewage discharge power provided by the host to complete the water supply and drainage operations.

[0016] The present invention also provides a household sweeping robot system, comprising: The automatic water supply and drainage device described above; The main unit of the sweeping robot has a built-in water suction pump and sewage pump, and is equipped with interfaces matching the fresh water supply nozzle, sewage discharge nozzle and docking detection electrode; The host automatically starts the water suction pump or the sewage discharge pump by detecting the short-circuit signal of the docking detection electrode.

[0017] This device aims to improve the efficiency of cleaning and wastewater removal by robot vacuums, automatically and promptly discharging collected wastewater from the base station into household sewage pipes. This eliminates the need for manual, timed treatment of wastewater from the base station. Its ingenious structure reduces the need for two water tanks, resulting in a compact device and significantly lowering costs. Another benefit is that it does not require household power, significantly enhancing safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a front structural diagram of the automatic water supply and drainage device of the present invention; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the automatic water supply and drainage device of the present invention; FIG3 is a cross-sectional view of the structure of the automatic water supply and drainage device of the present invention. Description of the symbols in the accompanying drawings: 1. Main water tank, 2. Water inlet pipe, 3. First water pipe quick connector, 4. Water level control valve, 5. Connecting rod, 6. Float, 7. Clean water hose, 8. Pressure valve, 9. Clean water nozzle, 10. Sewage nozzle, 11. Sewage hose, 12. First check valve, 13. Tee joint, 14. Second water pipe quick connector, 15. Sewage pipe, 16 Overflow port, 17. Second check valve, 18. Electrode shrapnel DETAILED DESCRIPTION The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.

[0019] See also Figure 1-3 , the structure of this patent is described as follows: The automatic water supply and discharge device of a sweeping robot of the present invention comprises: The water supply device includes a main water tank 1, in which a water level control valve 4 is provided. The water level control valve 4 is connected to the tap water inlet pipe 2 through a first water pipe quick connector 3, and the domestic tap water is connected to the device. The tap water enters the main water tank 1 through the water level control valve 4, and the water level control valve 4 is connected to the float 6 through a connecting rod 5. When the water level is advanced, the float 6 rises, driving the connecting rod 5 to block the water level control valve and stop adding water; when the water level drops, the float 6 drops, driving the connecting rod 5, and opening the water level control valve switch to add water. As a preferred embodiment of the present invention, a float positioning rod is provided at the lower part of the main water tank 1.

[0020] To add water to the main unit, the water in the main water tank 1 is connected to the clean water adding nozzle 9 through the clean water adding hose 7. A pressure valve 8 is provided on the clean water adding hose 7. When the main unit needs to add clean water, suction is generated. After the pressure valve 8 is opened, clean water can enter the main unit. Optionally, the pressure valve is a normally closed diaphragm valve, and the opening pressure threshold matches the negative pressure range of the main unit water suction pump; For sewage discharge, the main unit is connected to the sewage discharge nozzle 10, which is connected to the three-way joint 13 through the sewage hose 11. A first one-way valve 12 is set at the sewage hose 11 where it connects to the three-way joint 13 to prevent water backflow. Then, the sewage hose 11 is connected to the sewage pipe 15 through the second water pipe quick connector 14 to discharge the sewage into the household sewage channel; Overflow pipe: When the water level control valve 4 fails due to other reasons, the water level will continue to rise. An overflow pipe 16 is set at a certain height in the water tank. The overflow pipe 16 is connected to the tee connection 13, so that water enters the tee connection 13 and is then discharged into the domestic sewage channel through the sewage pipe. A second one-way valve 17 is set at the connection between the overflow pipe 16 and the tee connection 13 to prevent water from flowing back into the water tank. Two electrode springs 18 are located on the front of the device, facing the main unit charging spring. These two electrode springs are connected by internal wires to form a short circuit. When the main unit is docked with the fresh water filling nozzle 9 and the sewage discharge nozzle 10, the electrode springs 18 are also contacted. A low-voltage short-circuit signal indicates that the main unit and device are properly connected, and water filling and sewage discharge can then be performed.

[0021] In summary, this device has the following advantages 1. No need for separate power supply, reducing safety risks.

[0022] 2. This device is directly connected to the household tap water, and there is no need to add a clean water tank in the middle to add water to the host, nor is there any need for manual water addition to the water tank.

[0023] 3. This equipment can discharge the host sewage directly into the household sewage pipe. There is no need to add a sewage tank in the middle for turnover, and no manual participation in sewage discharge is required.

[0024] 4. The structure of this equipment is ingenious, and the efficiency of adding, cleaning and discharging sewage is greatly improved. At the same time, there is no complex structure such as dedicated clean water tank and sewage tank; it eliminates the large water tank, related pumps, complex control system and power module, making the equipment structure more compact and significantly reducing costs.

[0025] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An automatic water supply and discharge device for a sweeping robot, characterized in that: include: Main water tank, used to store clean water; A water level control valve is provided in the main water tank and is connected to the domestic tap water pipe via a first water pipe quick connector; The float water level control mechanism includes a float and a connecting rod, and is used to control the opening and closing of the water level control valve according to the water level changes in the main water tank; A fresh water adding assembly includes a fresh water adding nozzle, a fresh water adding hose, and a pressure valve. The fresh water adding hose connects the main water tank and the fresh water adding nozzle, and the pressure valve is provided on the fresh water adding hose. A sewage discharge assembly includes a sewage discharge nozzle, a sewage discharge hose, and a tee joint. The sewage discharge hose connects the sewage discharge nozzle and the tee joint, and the tee joint is connected to the household sewage pipe through the sewage discharge pipe; The docking detection electrode is located on the front of the device and is used to contact the charging electrode of the host and form a short-circuit signal, triggering the host to start the water supply and drainage process.

2. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: The sewage hose is provided with a first one-way valve to prevent sewage from flowing back.

3. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: An overflow pipe is also provided in the main water tank, and the overflow pipe is connected to the three-way joint through a second one-way valve.

4. The automatic water supply and drainage device of a sweeping robot according to claim 3, characterized in that: The height of the overflow pipe opening is higher than the normal working water level of the main water tank and lower than the top of the water tank.

5. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: The water level control valve is a mechanical float valve, which controls the opening and closing of the valve by driving the connecting rod through the rise and fall of the float.

6. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: A float positioning rod is provided at the bottom of the main water tank.

7. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: The pressure valve is a normally closed diaphragm valve, and the opening pressure threshold matches the negative pressure range of the host water suction pump.

8. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: The docking detection electrode is an elastic metal sheet, which is short-circuited internally and is used to send an electrical signal indicating successful docking to the host.

9. The automatic water supply and drainage device of a sweeping robot according to claim 1, characterized in that: The device as a whole does not require an external power supply and relies on the negative pressure and sewage discharge power provided by the host to complete the water supply and drainage operations.

10. A household sweeping robot system, characterized in that: include: The automatic water supply and drainage device according to any one of claims 1 to 9; The main unit of the sweeping robot has a built-in water suction pump and sewage pump, and is equipped with interfaces matching the fresh water supply nozzle, sewage discharge nozzle and docking detection electrode; The host automatically starts the water suction pump or the sewage discharge pump by detecting the short-circuit signal of the docking detection electrode.

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