Water storage tank and water supply system

Abstract

The utility model provides a water storage tank and a water supply system, the water storage tank comprises a tank body and a germicidal lamp, the germicidal lamp is located in a containing cavity of the tank body, the upper end of the tank body is further provided with a circulation port communicated with the containing cavity, the lower end of the tank body is further provided with a water outlet communicated with the containing cavity, and the water outlet is communicated with the water storage tank. The water storage tank further comprises a first pipeline and a driving pump, the two ends of the first pipeline are communicated with the water outlet and the circulation opening respectively, and the driving pump is installed on the first pipeline. According to the water storage tank, the germicidal lamp and the driving pump can be started irregularly, when the driving pump works, water in the water storage cavity flows out of the water outlet in the lower end of the tank body and flows into the containing cavity from the circulating opening in the upper end of the tank body through the first pipeline, so that the water in the tank body circularly flows, and the circularly flowing water has the opportunity to flow through the germicidal lamp in a short distance; therefore, the water sterilizing effect of the sterilizing lamp is improved, and the problem that the sterilizing effect is poor due to the fact that the water is far away from the sterilizing lamp is solved.

Description

Technical Field

[0001] This utility model relates to a water storage tank and a water supply system. Background Technology

[0002] Commercial water purifiers typically include a storage tank for storing room-temperature water. To prevent bacterial growth within the tank, ultraviolet (UV) germicidal lamps are usually installed inside. These lamps are generally placed at the bottom or top of the tank. However, because UV radiation decreases significantly with distance in water, areas of low irradiance exist within the tank, resulting in uneven UV radiation distribution and ineffective sterilization. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a water storage tank and water supply system.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A water storage tank includes a tank body and a germicidal lamp, the germicidal lamp being located in the receiving cavity of the tank body, the upper end of the tank body being provided with a circulation port communicating with the receiving cavity, the lower end of the tank body being provided with a water outlet communicating with the receiving cavity, the water storage tank further including a first pipe and a drive pump, the two ends of the first pipe being respectively connected to the water outlet and the circulation port, and the drive pump being installed on the first pipe.

[0006] In this design, the water storage tank can periodically activate the germicidal lamp and drive pump. When the drive pump is operating, water in the storage chamber flows out from the outlet at the bottom of the tank, through the first pipe, and into the receiving chamber from the circulation port at the top of the tank. This circulates the water within the tank, ensuring that the circulating water has the opportunity to pass close to the germicidal lamp, thereby improving the sterilization effect of the lamp and solving the problem of poor sterilization due to the water being too far from the lamp. When the water in the storage tank is not used for an extended period, the germicidal lamp and drive pump can be periodically activated, causing water to flow out from the outlet and into the circulation port, circulating the water in the tank. This brings the water receiving less irradiation from the lamp closer to it, increasing the irradiation and improving the sterilization effect. Simultaneously, the periodic mixing of the circulating water also prevents the formation of irradiation dead zones in areas with consistently low irradiation levels.

[0007] Preferably, the bottom of the housing is also provided with a water inlet, and a water distributor is installed at the water inlet. The water distributor includes a bowl-shaped cover, which is fastened to the water inlet and connected to the housing. The bowl-shaped cover has water passage holes, and a plurality of water passage holes are arranged around the circumferential direction of the bowl-shaped cover. The water inlet communicates with the receiving cavity through the water passage holes.

[0008] In this design, the water distributor redirects the upward-flowing water to a slow flow through the side holes, allowing it to rise gradually from the bottom of the tank. This prevents the water from disturbing the already sterilized water within the storage tank. As the water enters the bottom, it is closest to the sterilizing lamp, receiving the maximum irradiation and resulting in the fastest bacterial elimination. After sterilization, the water is then slowly pushed upwards by the subsequent room-temperature water. The filtered water enters the storage tank through the inlet. This filtered water often contains bacteria (from the post-filter and pipes), which, upon entering the storage tank, rise slowly from the bottom via the water distributor, preventing them from mixing with the already sterilized water at the top.

[0009] Preferably, the middle part of the bowl-shaped cover has a downwardly protruding part, which is correspondingly provided with the water inlet;

[0010] And / or, the upper end of the housing is also provided with a first overflow port communicating with the receiving cavity;

[0011] And / or, the housing is also provided with a water inlet communicating with the receiving cavity, the water inlet being used to connect to the second overflow port of the hot water tank;

[0012] And / or, the water storage tank further includes a controller and a water level sensor, the water level sensor being installed in the receiving cavity, and both the water level sensor and the drive pump being electrically connected to the controller.

[0013] In this design, the protrusion can change the direction and flow rate of the water entering from the inlet, evenly distributing the water to the surrounding area, and then slowly flowing out from the surrounding water passages. The slow-flowing water does not disrupt the overall state of the sterilized water in the water tank.

[0014] A first overflow port is provided on the tank. When the tank is full of water, the excess water can flow out from the first overflow port.

[0015] When the hot water tank is full, the excess water can flow out from the second overflow port on the hot water tank and then flow into the storage tank through the water inlet. The hot water can sterilize the storage tank.

[0016] The water level sensor is used to detect the water level in the water storage tank, and the controller can be used to start the drive pump and set the working time of the drive pump based on the water level information.

[0017] Preferably, the germicidal lamp is installed at the bottom of the housing, the water outlet is located at the bottom of the housing and close to the germicidal lamp, and the circulation port is located at the top of the housing.

[0018] In this design, the water outlet is located at the bottom of the tank, ensuring that all water inside the tank can flow out from the outlet and preventing stagnant water. The circulation port is located at the top of the tank, allowing water to flow in from above, creating a flowing water system, improving water mixing, and preventing bacterial growth.

[0019] By placing the water outlet close to the germicidal lamp, the water inside the chamber can flow close to the germicidal lamp when it passes through the outlet, thereby improving the sterilization effect of the germicidal lamp.

[0020] Preferably, there are two germicidal lamps, which are spaced apart at the bottom of the housing. The water outlet is located at the bottom of the housing and close to one of the germicidal lamps. The bottom of the housing is also provided with a water inlet, which is located at the bottom of the housing and close to the other germicidal lamp.

[0021] In this design, when water is introduced into the tank, the germicidal lamp near the inlet can sterilize the water entering the tank at close range. When water is drained, the germicidal lamp near the outlet can sterilize the water flowing out of the tank at close range, improving the sterilization effect and solving the problem of poor sterilization effect due to the distance between the water and the germicidal lamp.

[0022] A water supply system includes a water purification unit and a water storage tank as described above, wherein the water purification unit has a purification outlet connected to the water inlet of the water storage tank.

[0023] In this solution, the water purification unit is used to purify tap water. Since most water purification units produce water at a relatively low flow rate, the purified water is stored in a water storage tank for convenient use by users at any time, and a large flow rate of water can be achieved.

[0024] Preferably, the water supply system further includes a second pipe and a first solenoid valve and a second solenoid valve. One end of the second pipe is connected to the first pipe through a first three-way valve, and the other end of the second pipe is used to connect to the water supply end. The first three-way valve is located downstream of the drive pump. The first solenoid valve is installed on the first pipe and is located downstream of the first three-way valve. The second solenoid valve is installed on the second pipe.

[0025] In this solution, when a user uses water at the water outlet, the first solenoid valve is closed and the second solenoid valve is opened, driving the pump to draw water from the storage tank and deliver it to the water outlet via the second pipeline. When it is necessary to circulate and sterilize the water in the storage tank, the second solenoid valve is closed and the first solenoid valve is opened, driving the pump to draw water from the storage tank and allow it to flow into the circulation port via the first pipeline, thus achieving circulation and improving the sterilization effect.

[0026] Preferably, the water supply system further includes a hot water tank, a third pipe, and a third solenoid valve. One end of the third pipe is connected to the first pipe via a second three-way valve, and the other end of the third pipe is connected to the water inlet of the hot water tank. The second three-way valve is located between the drive pump and the first solenoid valve.

[0027] In this system, when the hot water tank needs to be filled, the first and second solenoid valves are closed, and the third solenoid valve is opened. The pump is then driven to draw water from the storage tank, which flows into the hot water tank through the first and third pipes, replenishing the tank. After filling is complete, the pump and the third solenoid valve are closed.

[0028] In the pipeline design, the third pipe used to replenish the hot water tank is connected to the first pipe used to transport room temperature water, so that part of the first pipe is used in an overlapping manner. When the hot water tank needs to be replenished, the water flows through the common part of the first pipe, which can clean the common part of the first pipe.

[0029] Preferably, the water supply system further includes a one-way valve installed on the third pipe, with the outlet of the one-way valve facing the hot water tank;

[0030] And / or, the water supply system further includes a heating element for heating the water in the hot water tank.

[0031] In this design, a check valve is used to prevent water in the hot water tank from flowing back into the storage tank through the third pipe.

[0032] Preferably, the water supply system further includes a hot water tank and a fourth pipe, the hot water tank having a second overflow port, one end of the fourth pipe being connected to the second overflow port, and the other end of the fourth pipe being connected to the water inlet of the water storage tank.

[0033] In this system, when room temperature water is not used for an extended period, the drive pump and the third solenoid valve can be activated, while the first and second solenoid valves are closed. This replenishes the hot water tank, flushing the pipes and simultaneously heating and sterilizing the water within the tank. Excess hot water from the tank flows into the storage tank through the second overflow port and the fourth pipe, where it sterilizes the water. If a large amount of water is added to the hot water tank, it can displace the hot water in the storage tank, maintaining a high temperature and thus sterilizing the water in the storage tank.

[0034] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0035] The positive and progressive effects of this utility model are as follows: The water storage tank can activate the germicidal lamp and drive pump at irregular intervals. When the drive pump is working, water in the storage chamber flows out from the outlet at the bottom of the tank, through the first pipe, and into the receiving chamber through the circulation port at the top of the tank, causing the water inside the tank to circulate. The circulating water has the opportunity to flow close to the germicidal lamp, thereby improving the sterilization effect of the lamp on the water and solving the problem of poor sterilization effect caused by the water being too far from the lamp. When the water in the storage tank is not used for a long time, the germicidal lamp and drive pump can be turned on periodically, causing water to flow out from the outlet and into the circulation port, circulating the water in the tank. This brings the water that receives less irradiation from the germicidal lamp closer to the lamp, increasing the irradiation and improving the sterilization effect. At the same time, the periodic circulation and mixing of the water also avoids the formation of irradiation dead zones in areas with low irradiation over a long period. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a water storage tank according to a preferred embodiment of the present invention. Figure 1 .

[0037] Figure 2 This is a schematic diagram of the structure of a water storage tank according to a preferred embodiment of the present invention. Figure 2 .

[0038] Figure 3 for Figure 2 Cross-sectional view along line AA.

[0039] Figure 4 This is a schematic diagram of the structure of a water equalizer according to a preferred embodiment of the present invention.

[0040] Figure 5 This is a schematic diagram of the water supply system according to a preferred embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] Box 1

[0043] Reception cavity 101

[0044] Water equalizer 102

[0045] Water passage 1021

[0046] Protrusion 1022

[0047] Circulation port 103

[0048] Outlet 104

[0049] Inlet 105

[0050] First overflow outlet 106

[0051] Water injection port 107

[0052] Germicidal lamp 2

[0053] First Pipeline 3

[0054] Drive pump 4

[0055] Water level sensor 5

[0056] Water purification unit 6

[0057] Post-filter 61

[0058] Membrane filter element 62

[0059] Booster pump 63

[0060] Pre-filter 64

[0061] Second Pipeline 7

[0062] First solenoid valve 8

[0063] Second solenoid valve 9

[0064] First three-way valve 10

[0065] Hot water tank 11

[0066] Second overflow outlet 111

[0067] Third Pipeline 12

[0068] Third solenoid valve 13

[0069] Second three-way valve 14

[0070] One-way valve 15

[0071] Heating element 16

[0072] Pipeline 4, No. 17

[0073] Water flow direction 100

[0074] Water end 200

[0075] 300 tap water Detailed Implementation

[0076] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0077] like Figures 1-5As shown, this embodiment discloses a water storage tank, which includes a tank body 1 and a germicidal lamp 2. The germicidal lamp 2 is located in the receiving cavity 101 of the tank body 1. The upper end of the tank body 1 is also provided with a circulation port 103 communicating with the receiving cavity 101, and the lower end of the tank body 1 is also provided with a water outlet 104 communicating with the receiving cavity 101. The water storage tank also includes a first pipe 3 and a drive pump 4. The two ends of the first pipe 3 are respectively connected to the water outlet 104 and the circulation port 103, and the drive pump 4 is installed on the first pipe 3.

[0078] like Figure 3 and Figure 5 As shown, in this embodiment, the water storage tank can periodically activate the germicidal lamp 2 and the drive pump 4. When the drive pump 4 is working, water in the storage chamber flows out from the outlet 104 at the lower end of the tank body 1, passes through the first pipe 3, and flows into the receiving chamber 101 from the circulation port 103 at the upper end of the tank body 1, causing the water in the tank body 1 to circulate. The circulating water has the opportunity to flow close to the germicidal lamp 2, thereby improving the sterilization effect of the germicidal lamp 2 on the water and solving the problem of poor sterilization effect caused by the water being far away from the germicidal lamp 2. When the water in the storage tank is not used for a long time, the germicidal lamp 2 and the drive pump 4 can be turned on periodically, causing water to flow out from the outlet 104 and flow in from the circulation port, circulating the water in the tank. This allows water that receives less irradiation from the germicidal lamp 2 to come closer to the germicidal lamp 2, increasing the irradiation and improving the sterilization effect. At the same time, periodically circulating and mixing the water also avoids the formation of irradiation dead zones in areas with low irradiation over a long period of time.

[0079] like Figure 3 As shown, the germicidal lamp 2 is installed at the bottom of the housing 1, the water outlet 104 is located at the bottom of the housing 1 and close to the germicidal lamp 2, and the circulation port 103 is located at the top of the housing 1. The water outlet 104 is located at the bottom of the housing 1, ensuring that all water in the housing 1 can flow out through the water outlet 104, preventing stagnant water in the housing 1. The circulation port 103 is located at the top of the housing 1, facilitating water to flow in from above, creating flowing water, improving water mixing, and preventing bacterial growth. Positioning the water outlet 104 close to the germicidal lamp 2 allows water in the housing 1 to flow directly past the germicidal lamp 2, thereby improving the sterilization effect of the germicidal lamp 2.

[0080] like Figure 3As shown, in this embodiment, there are two germicidal lamps 2, spaced apart at the bottom of the housing 1. The water outlet 104 is located at the bottom of the housing 1 and close to one of the germicidal lamps 2. The bottom of the housing 1 also has a water inlet 105, located at the bottom of the housing 1 and close to the other germicidal lamp 2. When water is introduced into the housing 1, the germicidal lamp 2 near the water inlet 105 can sterilize the water entering the housing 1 at close range. When water is drained, the germicidal lamp 2 near the water outlet 104 can sterilize the water flowing out of the housing 1 at close range, improving the sterilization effect and solving the problem of poor sterilization effect due to the distance between the water and the germicidal lamp 2. In other embodiments, the number of germicidal lamps can be set according to user needs.

[0081] like Figure 3 and Figure 4 As shown, the bottom of the tank 1 is also provided with a water inlet 105, and a water distributor 102 is installed on the water inlet 105. The water distributor 102 includes a bowl-shaped cover, which is fastened to the water inlet 105 and connected to the tank 1. The bowl-shaped cover has water passage holes 1021, and several water passage holes 1021 are arranged around the circumference of the bowl-shaped cover. The water inlet 105 communicates with the receiving cavity 101 through the water passage holes 1021. The water distributor 102 changes the upward flow of water to slowly flow out through the water passage holes 1021 on the side of the water distributor 102, and then slowly rises from the bottom of the tank. The water flow does not disrupt the overall state of the sterilized water in the water storage tank. When the water enters the bottom, it is close to the sterilizing lamp 2 and receives the maximum irradiation from the sterilizing lamp 2, killing bacteria the fastest. After sterilization, the water is slowly pushed to the top by the subsequent room temperature water. The filtered water enters the storage tank through the inlet 105. The filtered water often contains bacteria (growing in the post-filter and pipeline). When it enters the storage tank, it slowly rises from the bottom through the water distributor 102 and will not mix with the sterilized water at the top.

[0082] like Figure 4 As shown, the bowl-shaped lid has a downward-protruding protrusion 1022 in the middle, which corresponds to the water inlet 105. The protrusion 1022 can change the direction and flow rate of the water entering from the water inlet 105, evenly distributing the water to the surrounding area, and then slowly flowing out from the surrounding water passages 1021. The slow-flowing water does not disrupt the overall state of the sterilized water in the water tank.

[0083] like Figures 1-3 As shown, the upper end of the housing 1 is also provided with a first overflow port 106 that communicates with the receiving cavity 101. When the housing 1 is full of water, excess water can flow out from the first overflow port 106. The first overflow port 106 can also be used as a vent for the housing 1.

[0084] like Figures 1-3 , Figure 5As shown, the tank body 1 is also provided with a water inlet 107 that communicates with the receiving cavity 101. The water inlet 107 is used to connect to the second overflow port 111 of the hot water tank 11. When the hot water tank 11 is full, the excess water can flow out from the second overflow port 111 on the hot water tank 11, and then flow into the water storage tank through the water inlet 107. The flowing hot water can sterilize the water storage tank.

[0085] like Figures 1-3 As shown, the water storage tank also includes a controller and a water level sensor 5. The water level sensor 5 is installed in the receiving cavity 101. Both the water level sensor 5 and the drive pump 4 are electrically connected to the controller. The water level sensor 5 is used to detect the water level in the water storage tank. The controller can be used to start the drive pump 4 and set the operating time of the drive pump 4 based on the water level information, so as to balance energy saving and sterilization effects. Figures 1-3 As shown, there are three water level sensors 5, which are used to detect low, medium and high water levels respectively.

[0086] like Figure 5 As shown, this embodiment also discloses a water supply system, which includes a water purification unit 6 and a water storage tank as described above. The water purification outlet of the water purification unit 6 is connected to the water inlet 105 of the water storage tank. The water purification unit 6 is used to purify tap water. Since the water purification unit 6 produces water at a relatively small flow rate, the purified water is stored in the water storage tank for convenient use by the user at any time, thus achieving a large flow rate of water output.

[0087] like Figure 5 As shown, the water purification unit 6 includes a post-filter 61, a membrane filter 62, a booster pump 63, and a pre-filter 64. When the water purification unit 6 produces water, the solenoid valve at the inlet is opened, and the tap water at the tap water inlet 300 undergoes preliminary filtration through the pre-filter 64. After being pressurized by the booster pump 63, it enters the membrane filter 62. The purified water then passes through a one-way valve and the post-filter 61 before entering the storage tank 1 for storage. The sterilizing lamp 2 inside the tank 1 sterilizes the stored water.

[0088] like Figure 3 and Figure 5As shown, the water supply system also includes a second pipe 7, a first solenoid valve 8, and a second solenoid valve 9. One end of the second pipe 7 is connected to the first pipe 3 via a first three-way valve 10, and the other end of the second pipe 7 is used to connect to the water outlet 200. The first three-way valve 10 is located downstream of the drive pump 4. The first solenoid valve 8 is installed on the first pipe 3 and downstream of the first three-way valve 10. The second solenoid valve 9 is installed on the second pipe 7. When a user uses water at the water outlet 200, the first solenoid valve 8 is closed, and the second solenoid valve 9 is opened. The drive pump 4 draws water from the storage tank and delivers it to the water outlet 200 via the second pipe 7. When it is necessary to circulate and sterilize the water in the storage tank, the second solenoid valve 9 is closed, and the first solenoid valve 8 is opened. The drive pump 4 draws water from the storage tank and flows into the circulation port 103 via the first pipe 3, achieving circulation.

[0089] like Figure 5 As shown, the water supply system also includes a hot water tank 11, a third pipe 12, and a third solenoid valve 13. One end of the third pipe 12 is connected to the first pipe 3 via a second three-way valve 14, and the other end of the third pipe 12 is connected to the water inlet of the hot water tank 11. The second three-way valve 14 is located between the drive pump 4 and the first solenoid valve 8. When water needs to be added to the hot water tank 11, the first solenoid valve 8 and the second solenoid valve 9 are closed, and the third solenoid valve 13 is opened. The drive pump 4 draws water from the storage tank, which flows into the hot water tank 11 through the first pipe 3 and the third pipe 12, replenishing the hot water tank 11. After the water filling is completed, the drive pump 4 and the third solenoid valve 13 are closed.

[0090] like Figure 5 As shown, in the pipeline design, the third pipe 12 used to replenish water to the hot water tank 11 is connected to the first pipe 3 used to transport room temperature water, so that a part of the first pipe 3 is used in overlap. When the hot water tank 11 needs to be replenished, the water flows through the common part of the first pipe 3, which can clean the common part of the first pipe 3 and prevent the growth of bacteria.

[0091] like Figure 5 As shown, the water supply system also includes a one-way valve 15, which is installed on the third pipe 12, with its outlet facing the hot water tank 11. The one-way valve 15 is used to prevent water in the hot water tank 11 from flowing back into the storage tank through the third pipe 12.

[0092] like Figure 5 As shown, the water supply system also includes a heating element 16, which is used to heat the water in the hot water tank 11.

[0093] like Figure 5As shown, the water supply system has a fourth pipe 17, and the hot water tank 11 has a second overflow port 111. One end of the fourth pipe 17 is connected to the second overflow port 111, and the other end of the fourth pipe 17 is connected to the water inlet 107 of the storage tank. When the room temperature water is not used for a long time, the drive pump 4 and the third solenoid valve 13 can be turned on, and the first solenoid valve 8 and the second solenoid valve 9 can be closed to replenish the hot water tank 11. On the one hand, the injected water can flush the pipeline, and on the other hand, the water flowing into the hot water tank 11 can be heated and sterilized. At the same time, the excess hot water in the hot water tank 11 flows into the storage tank through the second overflow port 111 and the fourth pipe 17, and the hot water can sterilize the water in the storage tank. If a large amount of water is injected into the hot water tank 11, the high-temperature hot water in the hot water tank 11 can be replaced in the storage tank, so that the water temperature in the storage tank is at a high temperature, thereby sterilizing the storage tank at high temperature.

[0094] High-temperature sterilization of the water supply pipeline. By starting the drive pump 4 and the first solenoid valve 8 (for 5 minutes), the water supply pipeline (first pipe 3) can be sterilized by high temperature.

[0095] like Figure 5 As shown, the water flow direction in the water supply system is 100°. Figure 5 As indicated by the arrow in the diagram. In this embodiment, the germicidal lamp is an ultraviolet germicidal lamp.

[0096] In the description herein, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0097] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A water storage tank comprising a tank body and a germicidal lamp located in a receiving cavity of the tank body, characterized in that, The upper end of the box body is further provided with a circulating port communicated with the containing cavity, and the lower end of the box body is further provided with a water outlet port communicated with the containing cavity. The sterilization lamp is installed at the bottom of the box body, the water outlet port is located at the bottom of the box body and is arranged close to the sterilization lamp, and the circulating port is located at the top of the box body.

2. The water storage tank of claim 1, wherein The bottom of the box body is further provided with a water inlet port, and a water equalizer is installed on the water inlet port.

3. The water storage tank of claim 2, wherein The middle part of the bowl-shaped cover body has a downward protruding protruding part corresponding to the water inlet port. The upper end of the box body is further provided with a first overflow port communicated with the containing cavity. The box body is further provided with a water filling port communicated with the containing cavity. The water storage tank further comprises a controller and a water level sensor, the water level sensor is installed on the containing cavity, and the water level sensor and the driving pump are electrically connected with the controller.

4. The water storage tank of claim 1, wherein The number of the sterilization lamps is two, the two sterilization lamps are arranged at the bottom of the box body in a spaced manner, the water outlet port is located at the bottom of the box body and is arranged close to one of the sterilization lamps, and the bottom of the box body is further provided with a water inlet port.

5. A water supply system, characterized by The water supply system comprises a water purification unit and the water storage tank as claimed in any one of claims 1-4, and the water purification port of the water purification unit is connected to the water inlet port of the water storage tank.

6. The water supply system of claim 5, wherein The water supply system further comprises a second pipeline, a first electromagnetic valve and a second electromagnetic valve, one end of the second pipeline is communicated with the first pipeline through a first three-way valve, the other end of the second pipeline is used for connecting a water consumption end, the first three-way valve is located downstream of the driving pump, the first electromagnetic valve is installed on the first pipeline and located downstream of the first three-way valve, and the second electromagnetic valve is installed on the second pipeline.

7. The water supply system of claim 6, wherein The water supply system further comprises a hot water tank, a third pipeline and a third electromagnetic valve, one end of the third pipeline is communicated with the first pipeline through a second three-way valve, the other end of the third pipeline is communicated with the water filling port of the hot water tank, and the second three-way valve is located between the driving pump and the first electromagnetic valve.

8. The water supply system of claim 7, wherein The water supply system further comprises a one-way valve, the one-way valve is installed on the third pipeline, and the outlet of the one-way valve faces the hot water tank. The water supply system further comprises a heating body for heating water in the hot water tank.

9. The water supply system of claim 5, wherein, The water supply system further comprises a hot water tank and a fourth pipeline, the hot water tank has a second overflow port, one end of the fourth pipeline is connected to the second overflow port, and the other end of the fourth pipeline is connected to the water filling port of the water storage tank.

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