Unmanned integrated water supply mobile pump station
By designing a multi-chamber water tank and connecting valve mechanism in the unmanned integrated mobile water supply pump station, the limitations of traditional water supply systems in multi-media adaptation and space utilization are solved, realizing flexible water supply mode switching and efficient water supply capacity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN XINMIAO ENG TECH CO LTD
- Filing Date
- 2026-01-21
- Publication Date
- 2026-06-26
Smart Images

Figure CN121700876B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mobile water station technology, specifically to an unmanned integrated mobile water supply pump station. Background Technology
[0002] To address the issues of traditional water supply systems being paralyzed, missing, or insufficiently adapted in scenarios such as natural disasters, large-scale temporary events, and fires, mobile water trucks can be rapidly deployed using mobile chassis. These trucks can be pre-planned for deployment locations, quickly transported to their destinations, and provide temporary water supply as needed. After the rescue operation, they can be withdrawn and recycled, achieving reuse and significantly reducing the overall cost of temporary water supply. Therefore, the development of mobile water stations is a necessary development to meet this demand.
[0003] The development of mobile water stations has entered a competitive stage. Currently, most water trucks merely serve as water resource transfer stations and are difficult to adapt to various scenarios. For example, water and foam may be used in fire fighting, while in ordinary scenarios, only water supply is needed. Under the condition of meeting the use of various media, the water tank space is divided too small, which may not be able to meet the large amount of water used next time. If the water tank space is not adjusted, it is difficult to meet the use of multiple media. Therefore, traditional water stations are difficult to balance this situation. In view of this situation, this invention proposes a new solution to improve the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide an unmanned integrated mobile water supply pump station to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an unmanned integrated mobile water supply pumping station, comprising:
[0006] The chassis, pump module, water tank, and transfer platform module are all mounted on the chassis, with the transfer platform module positioned between the pump module and the water tank.
[0007] The water pump module has at least three output terminals for connecting to external water pipes and supplying water to external sources;
[0008] The water tank is equipped with at least two baffles, which divide the water tank into at least three chambers.
[0009] The transfer station module includes a central water plate and a connecting valve mechanism. The central water plate has an internal hollow structure. The connecting valve mechanism is located between the central water plate and the water tank. The central water plate and the water tank are at the same height. The connecting valve mechanism makes the water tank and the central water plate form a communicating vessel effect. Moreover, the unit water flow rate of the connecting valve mechanism is greater than the maximum water intake of the pump module.
[0010] The transfer station module is used to enable each chamber of the water tank to supply water to each output end of the pump module, or for each chamber to supply water to any one output end of the pump module.
[0011] Furthermore, the connecting valve mechanism includes a housing, a panel, and a mating plate;
[0012] The casing is fixed to the side of the water tank facing the central water plate, and a water hole coaxial with the output end of the pump module is opened on the casing.
[0013] The panel is fixed to the inner wall of the casing. The panel has a hole coaxial with the output end, and the diameter of the hole is larger than the diameter of the corresponding water hole on the water tank.
[0014] The top and bottom widths of the docking plate are adapted to the top and bottom inner wall widths of the cover shell. A tube is provided in the middle of the docking plate. The outer diameter of the tube is adapted to the inner diameter of the hole on the panel. An insert tube is slidably connected to the inner wall of the tube. The insert tube is positioned directly opposite the water hole on the water tank.
[0015] Furthermore, a hanging plate is fixed to the surface of the cannula, and the vertical width of the hanging plate is greater than the vertical width of the covering shell.
[0016] Several hinge blocks are installed on the upper and lower surfaces of the shell, and locking screws are installed on the hinge blocks. The upper and lower mounting plates have corresponding slots, and the locking screws can be inserted into the slots after rotation.
[0017] The locking screw is equipped with at least two nut handles for locking the lateral position of the mounting plate and the insertion tube.
[0018] Further, the docking plate is screwed with a fixing screw, and a screw connector is installed on the surface of the water tank at the position corresponding to the fixing screw. The fixing screw is screwed and fixed to the screw connector.
[0019] A sealing gasket is provided at the handle of the fixing screw.
[0020] Furthermore, the end of the tube is fixed with a rubber joint, and a sealing rubber ring is fixed at the water hole of the water tank.
[0021] The outer diameter of the rubber joint is larger than the inner diameter of the sealing rubber ring, and the inner diameter of the rubber joint is less than or equal to the inner diameter of the sealing rubber ring.
[0022] A sealing ring is provided on the insertion tube, and the thickness of the sealing ring is adapted to the inner diameter of the hole on the panel and the thickness of the tube.
[0023] Furthermore, a spring is provided between the mounting plate and the docking plate, and the spring is sleeved on the surface of the insertion tube.
[0024] Further, the central water plate has several water holes at the three output ends of the pump module, and each water hole is equipped with a receiving pipe.
[0025] Each insertion tube is fixed with a steel corrugated pipe at the end facing the central water plate, and the steel corrugated pipe is connected to the corresponding receiving pipe through a flange.
[0026] Furthermore, the output end of the pump module has at least three valve pipes, each equipped with a mechanical pump and a valve, which is one or both of mechanical valves and electronic valves;
[0027] The water pump module also includes a water supply pipe mounted on a bracket, and a water suction pump is installed on the water supply pipe;
[0028] A level gauge is installed at the central water plate.
[0029] Furthermore, the water tank has an opening at the top, the water tank and the chassis are detachably connected, the bottom of the water tank is connected to the chassis by several hinges, and the top of the water tank is equipped with several hooks;
[0030] A water supply valve is installed on one side of the water tank.
[0031] Furthermore, it also includes a vehicle shell, which covers the water pump module, transfer platform module and water tank and is fixedly installed on the chassis;
[0032] Sliding doors are provided on the vehicle body at the positions corresponding to the output end of the water pump module and the water tank replenishment valve.
[0033] Compared with the prior art, the beneficial effects of the present invention are:
[0034] This integrated mobile pump station divides the water tank into three chambers. Combined with the connecting valve mechanism and central water plate design of the transfer station module, it enables flexible switching between supplying water to the corresponding output end from multiple chambers or supplying water to any single output end centrally. It not only meets the needs of multi-media partitioned storage and supply in scenarios such as fire fighting, but also ensures the output of large amounts of water resources through centralized water supply in ordinary water supply scenarios, completely solving the adaptation limitations caused by the fixed space division of water tanks in traditional water stations.
[0035] Meanwhile, the connecting valve mechanism ensures sealing performance during chamber switching through precise docking of the insertion tube and sealing ring, spring-assisted guidance, and a locking screw structure. In addition, the multi-output configuration, dual control of mechanical and electronic valves, real-time liquid level monitoring, and atmospheric pressure balance opening make water supply mode switching more flexible and operation status more controllable. The dual water supply path of the water supply pipe and water supply valve also improves the adaptability under different water source conditions. Attached Figure Description
[0036] Figure 1 This is a schematic diagram of the overall structure of the present invention;
[0037] Figure 2 This is a structural schematic diagram of the present invention in its overall perspective state;
[0038] Figure 3 This is a side view structural diagram of the present invention;
[0039] Figure 4 This is a schematic diagram of the internal structure of the vehicle body of the present invention;
[0040] Figure 5 This is a schematic diagram of the position and structure of the connecting valve mechanism of the present invention;
[0041] Figure 6 This is a schematic diagram of the connecting valve mechanism of the present invention;
[0042] Figure 7 This is a schematic cross-sectional view of the connecting valve mechanism of the present invention.
[0043] In the diagram: 1. Chassis; 2. Vehicle body; 3. Water pump module; 301. Valve pipe; 302. Mechanical pump; 303. Level gauge; 304. Water supply pipe; 305. Suction pump; 4. Water tank; 401. Threaded connector; 402. Sealing rubber ring; 403. Opening; 404. Baffle; 405. Water supply valve; 5. Connecting valve mechanism; 501. Encasing shell; 502. Panel; 503. Connecting plate; 504. Fixing screw; 505. Sealing gasket; 506. Pipe; 507. Insert pipe; 508. Steel-reinforced corrugated pipe; 509. Rubber joint; 510. Spring; 511. Hinge block; 512. Locking screw; 513. Nut handle; 514. Hanging plate; 515. Sealing rubber ring; 6. Central water plate; 7. Hinge; 8. Receiving pipe. Detailed Implementation
[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0045] This mobile pump station adopts electronic power steering, which is easier to steer than mechanical steering. Operators can control the direction without much effort, especially under full load or complex road conditions. It greatly reduces the intensity of operation and improves the efficiency of operation. It can travel continuously for 30KM when empty, and is suitable for most short-distance operation scenarios.
[0046] like Figures 1-7As shown, the present invention provides a technical solution: an unmanned integrated mobile water supply pump station, including a pumping module 3, a water tank 4, and a transfer platform module. The pumping module 3, water tank 4, and transfer platform module are all installed on the chassis 1 of the mobile water station. The transfer platform module is located between the pumping module 3 and the water tank 4. The pumping module 3 is used to connect to an external water pipe to transfer water from the transfer platform module to the outside of the equipment for water supply or fire fighting, etc. The pumping module 3 has at least three output ends, which can be used to supply water to the outside of the equipment separately or to supply water to the outside using any one of the output ends. The transfer platform module is used to connect the water tank 4 to the pumping module 3, and realizes the function of supplying water to the three output ends separately or to any one of the output ends through the transfer platform module. The water tank 4 has three chambers, which can supply water to the three output ends separately through the transfer platform module, or the three chambers can be concentrated to supply water to any one of the output ends through the transfer platform module.
[0047] The pump module 3 supports up to 3 water supply zones. It can divide the water supply system into multiple independent zones according to on-site needs, such as living areas, work areas, and office areas of construction sites, or different resettlement points for emergency rescue. Each zone can adjust water pressure and flow independently to meet the differentiated water supply needs of different areas. Alternatively, it can use different fire extinguishing media according to various fire hazards. The output end needs to be installed with a special fire-fighting pipe for spraying. The whole vehicle is powered by 380V industrial voltage, with a maximum water supply power of 22KW. It is powerful and meets the power standards for industrial scenarios. It can be directly connected to the construction site or municipal power supply line without the need for additional transformer configuration.
[0048] like Figure 3 , Figure 4 as well as Figure 5 As shown, to ensure the smooth implementation of the above embodiments, it is necessary to understand that the transfer station module includes a central water plate 6 and a connecting valve mechanism 5. The central water plate 6 is a hollow plate structure formed by welding iron sheets. The connecting valve mechanism 5 is located between the central water plate 6 and the water tank 4. The height of the central water plate 6 is consistent with the height of the water tank 4. The connecting valve mechanism 5 allows the water tank 4 and the central water plate 6 to form a communicating vessel effect. That is to say, the pumping module 3 can draw water from the central water plate 6. It is necessary to understand that the unit flow rate of the connecting valve mechanism 5 needs to be greater than the maximum water intake of the pumping module 3 to avoid pressure loss.
[0049] like Figure 5 and Figure 6As shown, the connecting valve mechanism 5 includes a housing 501, which is fixed to one side of the water tank 4. Three water holes, coaxial with the output ends, are opened on the side facing the central water plate 6. These water holes are located inside the housing 501. A panel 502 is fixed to the inner wall of the housing 501. The panel 502 is welded to the inner wall of the housing 501 or integrally formed with the housing 501. The panel 502 also has holes coaxial with the output ends, and the diameter of these holes is larger than the diameter of the water holes on the water tank 4. The connecting valve mechanism 5 also includes... The device includes a docking plate 503, the upper and lower widths of which are adapted to the upper and lower inner wall widths of the covering shell 501. The middle part of the docking plate 503 is a tube 506, the outer diameter of which is exactly matched to the inner diameter of the hole on the panel 502. The inner wall of the tube 506 is slidably connected to an insert tube 507, which is directly opposite the water hole of the water tank 4. That is to say, when the insert tube 507 is connected to the hole on the water tank 4, the water in the water tank 4 can be transferred to the central water plate 6 through the insert tube 507.
[0050] Specifically, to ensure the smooth implementation of the above embodiments, it is necessary to know that a hanging plate 514 is fixed on the surface of the insertion tube 507. The vertical width of the hanging plate 514 is greater than the vertical width of the covering shell 501. Several hinge blocks 511 are installed on the upper and lower surfaces of the covering shell 501. A locking screw 512 is installed on the hinge block 511. The hanging plate 514 has slots at both the upper and lower parts. After the locking screw 512 is rotated, it can be positioned exactly at the slot. At least two nut handles 513 are also provided on the locking screw 512. Through the setting of this structure, the position of the insertion tube 507 in the lateral direction can be adjusted and locked. That is to say, the position of the hanging plate 514 can be locked by the two nut handles 513. The fixing of the hanging plate 514 and the insertion tube 507 means that the insertion tube 507 can be adjusted by the above structure.
[0051] like Figure 6 and Figure 7 As shown, regarding this scheme, it is also necessary to understand that a fixing screw 504 is provided on the docking plate 503 for screwing the screw to the docking plate 503. A screw connector 401 is installed on the surface of the water tank 4 at the corresponding fixing screw 504. The fixing screw 504 is screwed to the screw connector 401 for fixing the position of the docking plate 503. A sealing gasket 505 is also provided at the handle of the fixing screw 504 for sealing and increasing stability.
[0052] Additionally, a rubber joint 509 is fixed to the end of the insertion tube 507 by heat welding, and a corresponding sealing rubber ring 402 is heat welded to the water hole of the water tank 4. The outer diameter of the rubber joint 509 is larger than the inner diameter of the sealing rubber ring 402, while the inner diameter of the rubber joint 509 is at least smaller than the inner diameter of the sealing rubber ring 402. This ensures a seal after the rubber joint 509 and the sealing rubber ring 402 are joined. It should also be noted that the outer diameter of the insertion tube 507 is smaller than the inner diameter of the hole on the panel 502. Ensure that the insertion tube 507 can pass smoothly through the hole on the panel 502, and also provide a sealing rubber ring 515 on the insertion tube 507. The thickness of the sealing rubber ring 515 matches the inner diameter of the hole on the panel 502, and also matches the thickness of the tube 506. When the insertion tube 507 is disconnected from the sealing rubber ring 402, the sealing rubber ring 515 can block the seal between the tube 506 and the panel 502, preventing water leakage. Furthermore, under internal pressure, the sealing rubber ring 515 fits tightly against the gap, resulting in a better sealing effect.
[0053] A spring 510 is provided between the mounting plate 514 and the docking plate 503. The spring 510 is sleeved on the surface of the insertion tube 507. In this case, the smoothness and stability of the insertion tube 507 during lateral movement are improved, and the operation is smoother.
[0054] like Figure 6 and Figure 7 As shown, to ensure the smooth implementation of the above embodiments, it is also necessary to understand that the central water plate 6 is also provided with several water holes corresponding to the three output ends, and a receiving pipe 8 is installed at each water hole. A steel corrugated pipe 508 is fixed to the end of each insertion pipe 507 facing the central water plate 6. The receiving pipes 8 corresponding to the steel corrugated pipe 508 are connected and installed by flanges. The setting of the steel corrugated pipe 508 allows the insertion pipe 507 to be moved laterally within a certain range, and the flange connection is stable and reliable. During use, the position of the insertion pipe 507 can be adjusted by the steel corrugated pipe 508 without disassembling the flange.
[0055] The output end of the water pump module 3 consists of at least three valve pipes 301, each equipped with a mechanical pump 302. The mechanical pump 302 performs the pumping operation, and different pressures of water output can be achieved by installing mechanical pumps 302 with different power. Each valve pipe 301 is also equipped with a valve, which can be a mechanical valve or an electronic valve, or both mechanical and electronic valves can be installed simultaneously for calibration and comparison, all of which can open and close the valve pipe 301. In addition, the water pump module 3 also includes a water supply pipe 304 mounted on a bracket. A water suction pump 305 is installed on the water supply pipe 304. The water supply pipe 304 is used to replenish the water tank 4 with water, which is especially suitable for water sources without external pressure. For example, after the water supply pipe is connected to the water supply pipe 304, the water can be actively drawn by the water suction pump 305, which is relatively convenient. A level gauge 303 is also installed at the central water plate 6 to monitor the water level in the water tank 4 at any time.
[0056] like Figure 6 and Figure 7 As shown, the water tank 4 is equipped with at least two baffles 404, which divide the water tank 4 into at least three areas, each area corresponding to an output end. An opening 403 is also provided on the top of the water tank 4 to ensure atmospheric pressure balance inside the water tank 4. The water tank 4 is made of sheet metal or aluminum sheet. The water tank 4 is detachably connected to the chassis 1. The bottom of the water tank 4 is connected to the chassis 1 by several hinges 7, and the top of the water tank 4 is also equipped with several hooks for easy lifting. During the preparation process, the water tank 4 is first lifted onto the chassis 1 and connected to the chassis 1 by the hinges 7. Then, water is added after connecting to the central water plate 6 through the connecting valve mechanism 5. The water tank 4 is made of food-grade 304 stainless steel, which is corrosion-resistant and pollution-free. When providing guaranteed water supply, it ensures that the water quality meets drinking water standards.
[0057] After the pump module 3, the transfer station module, and the water tank 4 are all ready, the mobile water station also includes the vehicle shell 2. The vehicle shell 2 is lifted to cover the three modules and installed and fixed to complete the final preparation. The vehicle shell 2 is equipped with several sliding doors for connecting pipes. At the same time, a water supply valve 405 is also installed on one side of the water tank 4. The water supply valve 405 is also used to temporarily supply water to the water tank 4, such as water from a water source with external pressure, such as a fire pipe. A sliding door is also installed on the vehicle shell 2 at the position corresponding to the water supply valve 405 for use.
[0058] In summary, the two baffles 404 inside the water tank 4 divide it into three areas, each corresponding to the output end of the three valve pipes 301 of the pump module 3. The connecting valve mechanism 5 of the transfer station module connects to the sealing rubber ring 402 at the water hole of the water tank 4 through the insert pipe 507 inside the casing 501. Water supply is achieved by utilizing the communicating vessel effect formed by the central water plate 6 and the water tank 4. The lateral position of the insert pipe 507 can be adjusted and locked by adjusting the locking screw 512, the hanging plate 514 and the spring 510, so as to meet the needs of the three chambers to supply water to any output end individually or centrally. The steel corrugated pipe 508 is adapted to the lateral movement of the insert pipe 507. The pump module 3 is securely connected to the receiving pipe 8 of the central water plate 6 via a flange. The pump module 3 pumps water through the mechanical pump 302 on the valve pipe 301. Water can be supplied to one or more output terminals by controlling the mechanical valves or electronic valves of each valve pipe 301. The level gauge 303 at the central water plate 6 monitors the water level of the water tank 4 in real time. The opening 403 above the water tank 4 ensures the internal atmospheric pressure balance. Finally, water is supplied to the outside through the valve pipe 301 or used for fire fighting and other scenarios. The pump adopts a silent motor and shock absorption design, and the operating noise is less than 60 decibels, which is equivalent to the volume of daily conversation. It is suitable for noise-sensitive scenarios such as residential areas and hospital areas.
[0059] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.
Claims
1. An unmanned integrated mobile water supply pumping station, characterized in that, include: The chassis (1), pump module (3), water tank (4) and transfer platform module are all installed on the chassis (1), and the transfer platform module is located between the pump module (3) and the water tank (4). The water pump module (3) is equipped with at least three output terminals for connecting to external water pipes and supplying water to external sources; The water tank (4) is provided with at least two baffles (404), which divide the water tank (4) into at least three chambers; The transfer station module includes a central water plate (6) and a connecting valve mechanism (5). The central water plate (6) has an internal hollow structure. The connecting valve mechanism (5) is located between the central water plate (6) and the water tank (4). The central water plate (6) and the water tank (4) are at the same height. The connecting valve mechanism (5) makes the water tank (4) and the central water plate (6) form a communicating vessel effect. The unit water flow of the connecting valve mechanism (5) is greater than the maximum water intake of the pump module (3). The transfer station module is used to realize the function of each chamber of the water tank (4) supplying water to each output end of the pump module (3), or each chamber supplying water to any one output end of the pump module (3); The connecting valve mechanism (5) includes a housing (501), a panel (502), and a docking plate (503); The casing (501) is fixed to the side of the water tank (4) facing the central water plate (6), and the casing (501) has a water hole coaxial with the output end of the pump module (3); The panel (502) is fixed to the inner wall of the shell (501). The panel (502) has a hole coaxial with the output end, and the diameter of the hole is larger than the diameter of the corresponding water hole on the water tank (4). The upper and lower widths of the docking plate (503) are adapted to the upper and lower inner wall widths of the covering shell (501). A tube (506) is provided in the middle of the docking plate (503). The outer wall diameter of the tube (506) is adapted to the inner wall diameter of the hole on the panel (502). An insert tube (507) is slidably connected to the inner wall of the tube (506). The insert tube (507) is set opposite to the water hole on the water tank (4). The central water plate (6) has several water holes corresponding to the three output ends of the pump module (3), and each water hole is equipped with a receiving pipe (8). Each insertion tube (507) has a steel corrugated pipe (508) fixed at one end facing the central water plate (6), and the steel corrugated pipe (508) is connected to the corresponding receiving pipe (8) through a flange.
2. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, A hanging plate (514) is fixed on the surface of the cannula (507), and the vertical width of the hanging plate (514) is greater than the vertical width of the covering shell (501). Several hinge blocks (511) are installed on the upper and lower surfaces of the shell (501). A locking screw (512) is installed on the hinge block (511). The hanging plate (514) has corresponding slots on the upper and lower surfaces. After the locking screw (512) rotates, it is inserted into the slot. The locking screw (512) is provided with at least two nut handles (513) for locking the lateral position of the hanging plate (514) and the insertion tube (507).
3. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, A fixing screw (504) is screwed onto the docking plate (503), and a screw connector (401) is installed on the surface of the water tank (4) at the position corresponding to the fixing screw (504). The fixing screw (504) is screwed and fixed to the screw connector (401). A sealing gasket (505) is provided at the handle of the fixing screw (504).
4. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, A rubber joint (509) is fixed to the end of the insertion tube (507), and a sealing rubber ring (402) is fixed to the water hole of the water tank (4). The outer diameter of the rubber joint (509) is larger than the inner diameter of the sealing rubber ring (402), and the inner diameter of the rubber joint (509) is less than or equal to the inner diameter of the sealing rubber ring (402). The insertion tube (507) is provided with a sealing ring (515), the thickness of which is adapted to the inner wall diameter of the hole on the panel (502) and the thickness of the tube (506).
5. The unmanned integrated mobile water supply pumping station according to claim 2, characterized in that, A spring (510) is provided between the hanging plate (514) and the docking plate (503), and the spring (510) is sleeved on the surface of the insertion tube (507).
6. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, The output end of the pump module (3) is at least three valve pipes (301), each valve pipe (301) is equipped with a mechanical pump (302) and a valve, the valve being one or both of mechanical valves and electronic valves; The water pump module (3) also includes a water supply pipe (304) mounted by a bracket, and a water pump (305) is provided on the water supply pipe (304). A level gauge (303) is installed at the water plate (6).
7. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, The water tank (4) has an opening (403) at the top. The water tank (4) and the chassis (1) are detachably connected. The bottom of the water tank (4) is connected to the chassis (1) by several hinges (7). The top of the water tank (4) has several hooks. A water supply valve (405) is provided on one side of the water tank (4).
8. The unmanned integrated mobile water supply pumping station according to claim 1, characterized in that, It also includes a vehicle shell (2), which covers the water pump module (3), the transfer station module and the water tank (4) and is fixedly installed on the chassis (1); Sliding doors are provided on the vehicle body (2) at the positions corresponding to the output end of the water pump module (3) and the water tank (4) water supply valve (405).