Real-time monitoring device for water level of vehicle-mounted water tank of motor home

By using a sensor design that combines a float and a guide rod in the RV water tank, the problems of inaccuracy and inconvenience of traditional monitoring methods are solved, enabling real-time and accurate monitoring of water levels and convenient operation, thus improving the efficiency and hygiene of water tank level monitoring.

CN224189316UActive Publication Date: 2026-05-01HUBEI WEIERTEFEN RV TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HUBEI WEIERTEFEN RV TECH CO LTD
Filing Date
2025-06-25
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Traditional RV water tank level monitoring devices rely on level switches, which are inaccurate and inconvenient to monitor manually, making them unhygienic and complex to monitor.

Method used

The design combines a float and a guide rod with a sensor to monitor water level changes in real time. The sensor converts the float position signal into an electrical signal, which is then transmitted to the control module to display the water level data. The semi-transparent water tank material and scale lines further aid in observation.

Benefits of technology

It enables real-time and accurate monitoring of water tank levels, improving the convenience and flexibility of monitoring, reducing the need for manual intervention, and ensuring the stable operation of water-using equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a motor home vehicle-mounted water tank water level real-time monitoring device. The motor home vehicle-mounted water tank water level real-time monitoring device comprises a water tank body. A water inlet pipe and a water outlet pipe are arranged on one side of the water tank body, a mounting frame is arranged on the water tank body close to the water outlet pipe, a first filter and a water pump are arranged on the mounting frame, an electromagnetic valve is arranged at the bottom end of the water pump, and the first filter and the electromagnetic valve are connected with the water inlet pipe and the water outlet pipe respectively. A mounting groove is further formed in the top end of the water tank body in a penetrating mode, an end cover is arranged in the mounting groove, a sleeve and a sensor are further arranged at the bottom end of the end cover, a guide rod is further arranged in the sleeve, the top end of the guide rod is fixedly connected with the bottom end of the end cover, and the guide rod is further movably sleeved with a floating block. The top end of the water tank body is provided with a mounting groove for embedding the end cover, and the sleeve and the guide rod are fixed at the bottom of the end cover. When the water level changes, the floating block moves along the rod, the end cover bottom sensor senses the position, converts the position into water level data and transmits the water level data to the control module for display, and water level monitoring is achieved.
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Description

A real-time water level monitoring device for RV-mounted water tanks Technical Field

[0001] This utility model belongs to the field of monitoring device technology, and more specifically, it relates to a real-time monitoring device for the water level of a mobile home vehicle's onboard water tank. Background Technology

[0002] The RV water tank is installed inside or at the bottom of the RV and is used to store drinking water, washing water, and other domestic water. It stores daily water for RV trips and can meet the water needs of facilities such as faucets, toilets, and water heaters inside the vehicle. It is an important part of the RV water supply system and ensures water supply for RV trips. Traditional RV water tank level monitoring devices use simple level switches or rely on manual observation. Level switches can only provide a signal indicating whether the water level is high or low, and cannot achieve real-time and accurate monitoring of the water level. Manual observation requires frequent opening of the water tank to check, which is neither convenient nor hygienic. This makes the RV water tank level monitoring process complicated and inefficient. Summary of the Invention

[0003] To address the aforementioned technical problems, this utility model provides a real-time water level monitoring device for RV water tanks. This solves the technical problem that in the prior art, traditional RV water tank water level monitoring relies on level switches or manual observation. Level switches are inaccurate, and manual observation is inconvenient and unhygienic, resulting in complex and inefficient monitoring.

[0004] The purpose and effectiveness of this utility model's real-time water level monitoring device for RV-mounted water tanks are achieved through the following specific technical means:

[0005] A real-time water level monitoring device for a motorhome vehicle-mounted water tank includes a water tank body. An inlet pipe and an outlet pipe are respectively installed on one side of the water tank body. A mounting bracket is also installed on the water tank body near the outlet pipe. A first filter and a water pump are respectively installed on the mounting bracket. A solenoid valve is also installed at the bottom of the water pump. The first filter and the solenoid valve are respectively connected to the inlet pipe and the outlet pipe. A mounting groove is also formed through the top of the water tank body. An end cap is installed in the mounting groove. A sleeve and a sensor are also installed at the bottom of the end cap. A guide rod is also installed inside the sleeve, and the top of the guide rod is fixedly connected to the bottom of the end cap. A float is movably mounted on the guide rod.

[0006] The above technical solution further includes that multiple sets of guide grooves are evenly opened on the periphery of the water tank body, and each set of guide grooves is provided with an installation component, and one side of the mounting bracket is detachably connected to one set of the installation components.

[0007] The above technical solution further includes that the bottom end of the guide rod is provided with an installation part, and a limiting member is detachably sleeved on the installation part, and the bottom end of the float is in contact with the limiting member.

[0008] The above technical solution further includes that a second filter is provided at the top of the water pump, and the water pump, the solenoid valve and the sensor are all electrically connected to the control module in the RV through wiring.

[0009] The above technical solution further includes that a handle is provided at the top of both the water tank body and the end cap; a sealing element is also provided inside the end cap, and the periphery of the sealing element is in contact with the mounting groove.

[0010] The above technical solution further includes that the water tank body is provided with a cleaning port, and the cleaning port is also fitted with a sealing cap.

[0011] The above technical solution further includes that the water tank body is made of semi-transparent polyethylene material, and two sets of scale lines are provided on opposite sides of the water tank body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. An installation groove is formed at the top of the water tank body, and the end cap is embedded in the installation groove. A fixed sleeve and guide rod are fixed at the bottom of the end cap. The guide rod passes through the center hole of the float, and the float is fitted onto the guide rod. When the water level rises, the float moves upward along the guide rod due to buoyancy; when the water level falls, the float moves downward along the guide rod due to gravity. A sensor is installed at the bottom of the end cap to sense the position of the float in real time, converting the float position information into an electrical signal, which is transmitted to the control module through a circuit. The control module processes the electrical signal and then displays the real-time water level data in the water tank, realizing accurate dynamic monitoring of the water level.

[0014] 2. The guide grooves around the water tank body, along with the mounting components, allow for detachable connection of the mounting bracket, facilitating adjustment of the installation position; the end caps are equipped with handles and seals for easy opening and to ensure a tight seal; the cleaning port is equipped with a sealing cap for easy cleaning; the semi-transparent material and scale lines facilitate observation of the water level; the detachability of each component facilitates maintenance and replacement, enhancing the overall ease of use and flexibility of the device. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the assembled structure of this utility model.

[0016] Figure 2 is a schematic diagram of the internal structure of this utility model after assembly.

[0017] Figure 3 is an exploded structural diagram of the end cap of this utility model.

[0018] Figure 4 is a structural schematic diagram of the water tank body of this utility model.

[0019] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0020] 1. Water tank body; 2. First filter; 3. Water pump; 4. Solenoid valve; 5. Sensor; 6. Second filter; 101. Inlet pipe; 102. Outlet pipe; 103. Mounting bracket; 104. End cap; 105. Sleeve; 106. Guide rod; 107. Float; 201. Guide groove; 202. Mounting component; 301. Limiting component; 501. Handle; 502. Sealing component; 601. Cleaning port; 602. Sealing cover; 701. Scale line. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0022] Example:

[0023] As shown in Figures 1 to 4, this utility model provides a real-time water level monitoring device for a motorhome vehicle-mounted water tank, including a water tank body 1. An inlet pipe 101 and an outlet pipe 102 are respectively installed on one side of the water tank body 1. A mounting bracket 103 is also installed on the water tank body 1 near the outlet pipe 102. A first filter 2 and a water pump 3 are respectively installed on the mounting bracket 103. A solenoid valve 4 is also installed at the bottom of the water pump 3. The first filter 2 and the solenoid valve 4 are respectively connected to the inlet pipe 101 and the outlet pipe 102. A mounting groove is also provided through the top of the water tank body 1. An end cap 104 is installed in the mounting groove. A sleeve 105 and a sensor 5 are also installed at the bottom of the end cap 104. A guide rod 106 is also installed inside the sleeve 105, and the top of the guide rod 106 is fixedly connected to the bottom of the end cap 104. A float 107 is also movably mounted on the guide rod 106. An inlet pipe 101 and an outlet pipe 102 are installed on one side of the water tank body 1. The inlet pipe 101 is connected to the first filter 2, and the water pump 3 is connected to the first filter 2 through a pipeline. When the water pump 3 is working, the external water source is filtered by the first filter 2 and then delivered to the water tank body 1 through the inlet pipe 101. A solenoid valve 4 is installed on the outlet pipe 102. The water pump 3 is connected to the outlet pipe 102 through the solenoid valve 4. When water is needed, the solenoid valve 4 is opened, and the water pump 3 pumps the water in the water tank body 1 out through the outlet pipe 102 to meet the water needs of the RV, forming a complete process of water inflow, filtration, pumping into the water tank, and controlled outflow.

[0024] The top of the water tank body 1 has a through-type mounting groove, into which the end cap 104 is fitted and embedded. The bottom of the end cap 104 is fixed with a guide rod 106, a sleeve 105, and a sensor 5. A float 107 is fitted onto the guide rod 106 and can slide freely. Based on the principle of communicating vessels, when the water level in the water tank body 1 changes, water enters and exits through the lower opening of the sleeve 105, keeping the liquid level inside the sleeve 105 equal to the liquid level inside the water tank body 1. When the water level rises, the float 107 rises with the liquid level inside the sleeve 105 and moves upward along the guide rod 106 under the action of buoyancy; when the water level falls, the float 107 falls with the liquid level and moves downward along the guide rod 106 under the action of gravity. The sensor 5 continuously monitors the position of the float 107 on the guide rod 106, converting the position signal into water level data for real-time water level monitoring; this sensor 5 can be an IL-300 model sensor.

[0025] A second filter 6 is installed at the top of the water pump 3. The water pump 3, solenoid valve 4, and sensor 5 are all electrically connected to the control module inside the RV via wiring. The second filter 6 at the top of the water pump 3 allows external water to enter the water tank 1 after initial filtration by the first filter 2. When water is used, the water in the tank is pumped out by the water pump 3 and then filtered a second time by the second filter 6. This two-stage filtration process intercepts impurities of different sizes in the water, reducing the probability of impurities entering the RV's water system, ensuring stable operation of the water-using equipment, and preventing blockages. The water pump 3, solenoid valve 4, and sensor 5 are connected to the control module inside the RV via wiring. Sensor 5 senses the position change of the float 107 on the guide rod 106, converting it into water level data that is transmitted to the control module. The control module presents the water level information in data form, allowing the user to determine the water level in the water tank 1 and perform water addition or usage operations accordingly.

[0026] As shown in Figures 1, 2, and 4, the water tank body 1 is also equipped with a cleaning port 601, and a sealing cap 602 is fitted over the cleaning port 601. The water tank body 1 is made of semi-transparent polyethylene, and two sets of scale lines 701 are arranged opposite each other on both sides of the water tank body 1. The cleaning port 601 on the water tank body 1 allows cleaning tools or cleaning agents to be directly inserted into the water tank by removing the sealing cap 602 to clean residual dirt on the inner wall and bottom of the water tank. The sealing cap 602, fitted over the cleaning port 601, ensures the water tank is sealed after cleaning, preventing water leakage and maintaining the normal water storage function of the water tank. Simultaneously, the semi-transparent polyethylene material of the water tank body 1 allows for a direct observation of the approximate water level inside. The two sets of scale lines 701 on both sides provide users with a precise water level reference. Users can read the values ​​of the scale lines 701 through the semi-transparent material of the water tank body 1, and combined with the data transmitted by the sensor 5, achieve dual confirmation of the water level in the water tank, ensuring the accuracy of water usage planning.

[0027] As shown in Figures 1, 2, and 4, both the top of the water tank body 1 and the end cap 104 are equipped with handles 501; a sealing element 502 is also installed inside the end cap 104, with its periphery contacting the mounting groove. The handles 501 on the top of the water tank body 1 facilitate moving or adjusting its position; the handles 501 on the top of the end cap 104 facilitate opening or closing the end cap 104 for inspection, maintenance, and replacement of internal components such as the sensor 5 and float 107. The sealing element 502 inside the end cap 104, with its periphery contacting the mounting groove, forms a sealed structure after the end cap 104 is installed in the mounting groove at the top of the water tank body 1, preventing external dust and debris from entering the water tank body 1, avoiding water leakage, and ensuring the normal operation of the water tank's water storage function.

[0028] As shown in Figures 1 and 4, multiple sets of guide grooves 201 are evenly distributed around the perimeter of the water tank body 1. Each set of guide grooves 201 contains a mounting component 202. One side of the mounting bracket 103 is detachably connected to one set of mounting components 202. The multiple sets of guide grooves 201 around the perimeter of the water tank body 1, each containing a mounting component 202, allow for detachable connection of one side of the mounting bracket 103 to any set of mounting components 202. This facilitates the installation of the mounting bracket 103 and its other components. During installation, the mounting bracket 103 is docked and fixed to the mounting component 202; during disassembly, they are separated. This allows for easy adjustment of the mounting bracket 103's position according to the water tank layout and RV space, or for maintenance and replacement of the mounting bracket 103 and its connecting components. The guide grooves 201 and the mounting components 202 cooperate to provide positioning and support for the mounting bracket 103. After the mounting bracket 103 is connected to the mounting component 202, the mounting component 202 is embedded in the guide groove 201, which restricts the movement of the mounting bracket 103 and makes the mounting bracket 103 firmly fixed on the side of the water tank body 1. This ensures that the first filter 2, water pump 3 and other components on the mounting bracket 103 will not shake or shift during operation, and maintains the stable operation of the water circulation system.

[0029] As shown in Figures 2 and 3, a mounting part is also provided at the bottom of the guide rod 106, and a limiting member 301 is detachably fitted on the mounting part. The bottom end of the float 107 contacts the limiting member 301. With the limiting member 301 fitted on the mounting part at the bottom of the guide rod 106, when the float 107 moves downward along the guide rod 106, its bottom end contacts the limiting member 301, preventing the float 107 from moving further downward and fixing the lowest position of the float 107. This ensures that the float 107 moves within a set range with the rise and fall of the water level, preventing the float 107 from detaching from the guide rod 106 or sinking to the bottom of the water tank and affecting monitoring. Simultaneously, the limiting member 301 is detachably fitted on the mounting part. During installation, the limiting member 301 is fitted into the mounting part and fixed to install the float 107. During maintenance, the limiting member 301 is removed, allowing the float 107 to be taken out of the guide rod 106 for inspection, cleaning, or replacement, reducing maintenance difficulty and improving repair efficiency.

[0030] The above description is merely an embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A real-time water level monitoring device for a motorhome vehicle-mounted water tank, comprising a water tank body (1), characterized in that: The water tank body (1) is provided with an inlet pipe (101) and an outlet pipe (102) on one side. A mounting bracket (103) is also provided on the water tank body (1) near the outlet pipe (102). A first filter (2) and a water pump (3) are respectively mounted on the mounting bracket (103). A solenoid valve (4) is also provided at the bottom of the water pump (3). The first filter (2) and the solenoid valve (4) are respectively connected to the inlet pipe (101) and the outlet pipe (102). A water outlet pipe (102) is connected; an installation groove is also provided through the top of the water tank body (1), an end cap (104) is provided in the installation groove, a sleeve (105) and a sensor (5) are provided at the bottom of the end cap (104), a guide rod (106) is provided in the sleeve (105), and the top of the guide rod (106) is fixedly connected to the bottom of the end cap (104), and a float (107) is movably sleeved on the guide rod (106).

2. The RV-mounted water tank real-time water level monitoring device according to claim 1, characterized in that: The water tank body (1) has multiple sets of guide grooves (201) evenly opened on its periphery. Each set of guide grooves (201) is provided with an installation component (202). One side of the mounting bracket (103) is detachably connected to one of the installation components (202).

3. The real-time water level monitoring device for a motorhome's onboard water tank according to claim 1, characterized in that: The bottom end of the guide rod (106) is also provided with an installation part, and a limiting member (301) is also detachably sleeved on the installation part, and the bottom end of the float (107) contacts the limiting member (301).

4. The real-time water level monitoring device for a motorhome's onboard water tank according to claim 1, characterized in that: The top of the water pump (3) is also provided with a second filter (6). The water pump (3), the solenoid valve (4) and the sensor (5) are all electrically connected to the control module in the RV through a circuit.

5. The RV-mounted water tank real-time water level monitoring device according to claim 1, characterized in that: The top of both the water tank body (1) and the end cap (104) are provided with handles (501); a sealing element (502) is also provided inside the end cap (104), and the periphery of the sealing element (502) is in contact with the mounting groove.

6. The real-time water level monitoring device for a motorhome's onboard water tank according to claim 1, characterized in that: The water tank body (1) is also provided with a cleaning port (601), and a sealing cap (602) is also fitted on the cleaning port (601).

7. The RV-mounted water tank real-time water level monitoring device according to claim 1, characterized in that: The water tank body (1) is made of semi-transparent polyethylene material, and two sets of scale lines (701) are provided on both sides of the water tank body (1).