Constant-pressure water replenishing device for water treatment
By replacing the float switch with a built-in pressure sensor and float structure, and combining an ultrasonic descaling device and a brush, the problems of poor sealing of the float switch and long-term immersion of the cleaning device in the constant pressure water supply device for water treatment are solved. This achieves accurate water level detection and stable water quality, ensuring the reliability of the equipment and excellent water quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI AODONG WATER TREATMENT TECHNOLOGY CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-19
AI Technical Summary
In existing water treatment constant pressure water replenishment devices, the poor sealing of the float switch allows water to enter the device, affecting the equipment life and water quality. In addition, the cleaning device becomes soft after long-term immersion in water, affecting water quality and equipment reliability.
By replacing the float switch with a built-in pressure sensor and float structure, combined with an ultrasonic descaling device and a liftable brush, non-contact scale breaking and constant pressure control are achieved, preventing water intrusion and equipment damage, and ensuring stable water quality.
It achieves accurate and stable water level detection, avoids equipment damage and water pollution, improves water quality stability and equipment reliability, and effectively removes scale.
Smart Images

Figure CN224258289U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of water treatment pressure control technology, specifically relating to a water treatment constant pressure water replenishment device. Background Technology
[0002] In water treatment, constant pressure water replenishment is often required in water tanks. This is achieved by setting up a water level control device to adjust the water pressure and replenish the water volume, keeping the water level constant. A common method is to use a float switch. However, existing float switches have some shortcomings: the position of the float switch is generally fixed in a certain position in the water tank and the height cannot be adjusted, so the range of water pressure control is relatively limited. Furthermore, there is a lack of measures for cleaning the inner wall of the water tank, because after long-term use, a large amount of scale will accumulate on the inner wall of the water tank.
[0003] Chinese utility model patent CN220788099U discloses a water treatment constant pressure water replenishment device, including a water tank, support legs, a grille, water treatment equipment, a rotating shaft, an inlet valve, a lifting water pressure control device, and a cleaning device. The support legs are located at the bottom of the water tank, the grille is located at the bottom interior of the water tank, the water treatment equipment is located on one side of the water tank and communicates with it, the rotating shaft is rotatably mounted on the upper end of the grille, the inlet valve is located on the side wall of the water tank, the lifting water pressure control device is located on the water tank and slides within the rotating shaft, and the cleaning device is located on the rotating shaft and situated on the water tank. This utility model belongs to the field of water treatment water pressure control technology, specifically referring to a water treatment constant pressure water replenishment device capable of adjusting the lifting of the water pressure control device and simultaneously removing scale from the inner wall of the water tank.
[0004] During use, the above-mentioned device replenishes water to the tank through the inlet valve. When the water reaches the height of the float switch, the float switch is lifted by the water pressure, the inlet valve is shut off, and the water in the tank provides water of equal pressure to the water treatment equipment. However, the float switch is placed directly inside the device. If the seal is not good, water will enter, damaging the device and contaminating the water source. Secondly, placing the cleaning brush directly inside the device not only takes up internal space, but also may become soft after being soaked in water for a long time, affecting the water quality. Utility Model Content
[0005] In view of the above-mentioned shortcomings in the existing technology, the present invention provides a water treatment constant pressure water replenishment device to solve the problems in the background technology.
[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0007] A water treatment constant pressure water replenishment device includes a water tank. The side wall of the water tank is provided with an inlet, an outlet and a drain. An ultrasonic descaling device and a controller are connected to the middle of the outer side wall. The top of the inner side is provided with a water replenishment and descaling component. The water tank is connected to water treatment equipment through the outlet. The water replenishment and descaling component includes a cylinder at the top, a connecting rod connected to the telescopic rod of the cylinder and a buoyancy detection device at the lower end. A brush is connected to the side wall of the connecting rod. The buoyancy detection device is provided with a float and a chute at the bottom. A second pressure sensor is provided at the upper end of the chute and a first pressure sensor is provided at the lower end.
[0008] Furthermore, the bottom of the water tank is arc-shaped and is fixed externally by a bracket.
[0009] Furthermore, the inlet, outlet, and drain are all controlled by electric valves, with the inlet located at the bottom of the tank's side wall, the drain at the bottom of the tank, and the outlet in the middle of the tank's side wall.
[0010] Furthermore, the side wall of the connecting rod is provided with uniformly connected brushes, and the lower end is connected to a buoyancy detection device.
[0011] Furthermore, the float is cylindrical with a sphere at the bottom and a circular block at the top. The diameter of the middle part of the groove matches the diameter of the circular block, and the bottom has a through hole that matches the diameter of the float.
[0012] Furthermore, the input terminal of the controller is connected to the output terminals of the first and second pressure sensors, and the output terminal is connected to the input terminals of each electric valve and cylinder.
[0013] Compared with the prior art, this utility model has the following advantages:
[0014] 1. The pressure sensor is triggered by the up and down displacement of the float to monitor water level changes in real time. The water level detection element is changed from a mechanical float to a built-in pressure sensing structure, which avoids water intrusion into the device due to the failure of the float switch seal. This eliminates the risk of equipment damage and water pollution from the source. At the same time, the electrical signal transmission accuracy of the pressure sensor is improved compared to the mechanical float, ensuring more stable constant pressure control.
[0015] 2. A composite descaling system combining an ultrasonic descaling device and a liftable brush. The ultrasonic descaling device is externally installed on the outer wall of the water tank and achieves non-contact scale breaking through high-frequency vibration. The brush, which can be raised and lowered as needed, only contacts the inner wall during descaling and is placed on top of the device when not in use, thus avoiding long-term immersion of the brush in water. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of a water treatment constant pressure water replenishment device according to the present invention;
[0017] Figure 2 This is a schematic diagram of the structure of the brush of this utility model;
[0018] Figure 3 for Figure 1 Cross-sectional view at point A in the middle;
[0019] The reference numerals in the accompanying drawings include:
[0020] 1. Water tank; 11. Inlet; 12. Outlet; 13. Drain; 14. Support; 2. Water treatment equipment; 3. Water replenishment and descaling assembly; 31. Cylinder; 32. Connecting rod; 33. Brush; 4. Buoyancy detection device; 41. Float; 411. Round block; 42. First pressure sensor; 43. Second pressure sensor; 44. Slide groove; 5. Ultrasonic descaling device; 6. Controller. Detailed Implementation
[0021] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0022] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0023] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0024] In the description of this utility model, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating the connection relationship between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Example 1:
[0026] like Figure 1-3 As shown, this utility model is a water treatment constant pressure water replenishment device, including a water tank 1. The side wall of the water tank 1 is provided with an inlet 11, an outlet 12 and a drain outlet 13. An ultrasonic descaling device 5 and a controller 6 are connected to the middle of the outer side wall. The top of the tank is provided with a water replenishment and descaling component 3. The water tank 1 is connected to a water treatment equipment 2 through the outlet 12. The water replenishment and descaling component 3 includes a cylinder 31 at the top, a connecting rod 32 connected to the telescopic rod of the cylinder 31, and a buoyancy detection device 4 at the lower end. A brush 33 is connected to the side wall of the connecting rod 32. The buoyancy detection device 4 is provided with a float 41 and a groove 44 at the bottom. A second pressure sensor 43 is provided at the upper end of the groove 44 and a first pressure sensor 42 is provided at the lower end.
[0027] In this embodiment, the bottom of the water tank 1 is arc-shaped and is fixed externally by the bracket 14.
[0028] In this embodiment, the inlet 11, outlet 12, and drain 13 are all controlled by electric valves. The inlet 11 is located at the bottom of the side wall of the water tank 1, the drain 13 is located at the bottom of the water tank 1, and the outlet 12 is located in the middle of the side wall of the water tank 1. The inlet 11 is located at the bottom to ensure that water enters from the bottom and the water level rises steadily. The outlet 12 is located in the middle, so that impurities accumulate and settle when the water is still. The water in the middle can ensure both the continuity of water supply and the purity of the water.
[0029] In this embodiment, the side wall of the connecting rod 32 is provided with uniformly connected brushes 33, and the lower end is connected to a buoyancy detection device 4. The diameter of the brushes 33 is larger than the maximum diameter of the water tank 1.
[0030] In this embodiment, the float 41 is cylindrical with a sphere at the lower end and a circular block 411 at the upper end. The diameter of the middle part of the groove 44 matches the diameter of the circular block 411, and the lower end has a through hole matching the diameter of the float 41. This ensures that the float 41 remains stable during its up-and-down movement, preventing tilting and ensuring accuracy.
[0031] In this embodiment, the input terminal of the controller 6 is connected to the output terminals of the first pressure sensor 42 and the second pressure sensor 43, and the output terminal is connected to the input terminals of each electric valve and the cylinder 31.
[0032] Working principle:
[0033] When the water level in tank 1 drops, the float 41 sinks along the slide 44 due to reduced buoyancy, triggering an electrical signal. After receiving the low water level signal, the controller 6 opens the electric valve of the inlet 11 to replenish water. When the water level rises to the set height, the float 41 floats up, triggering a high water level signal, and the controller 6 closes the electric valve of the inlet 11 to stop replenishing water.
[0034] Simultaneously, the cylinder 31 can be activated at regular intervals or as needed to drive the connecting rod 32 and brush 33 to move up and down to clean the inner wall of the water tank 1. The ultrasonic descaling device 5 synchronously emits high-frequency vibrations to dislodge the scale. The arc-shaped design at the bottom of the water tank 1 guides the scale to gather towards the drain outlet 13. During descaling, the controller 6 opens the electric valve of the drain outlet 13 to discharge the scale.
[0035] The above are merely embodiments of this utility model. The circuits, electronic components, and modules involved are all prior art, fully achievable by those skilled in the art, and require no further explanation. The content protected by this application does not involve improvements to the software or methods. Commonly known structures and characteristics in the solution are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field to which this utility model pertains prior to the application date or priority date, are able to access all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Those skilled in the art can, under the guidance of this application, improve and implement this solution in conjunction with their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.
Claims
1. A water treatment constant pressure water supply device, comprising a water tank (1), characterized in that: The water tank (1) has an inlet (11), an outlet (12) and a drain (13) on its side wall. An ultrasonic descaling device (5) and a controller (6) are connected to the middle of the outer side wall. A water replenishment and descaling assembly (3) is provided at the top inside. The water tank (1) is connected to a water treatment equipment (2) through the outlet (12). The water replenishment and descaling assembly (3) includes a cylinder (31) at the top, a connecting rod (32) connected to the telescopic rod of the cylinder (31), and a buoyancy detection device (4) at the bottom. A brush (33) is connected to the side wall of the connecting rod (32). The buoyancy detection device (4) is provided with a float (41) and a chute (44) at the bottom. A second pressure sensor (43) is provided at the upper end of the chute (44) and a first pressure sensor (42) is provided at the lower end.
2. The water treatment constant pressure water supply device as described in claim 1, characterized in that: The bottom of the water tank (1) is arc-shaped and is fixed externally by a bracket (14).
3. The water treatment constant pressure water supply device as described in claim 2, characterized in that: The inlet (11), outlet (12) and drain (13) are all controlled by electric valves. The inlet (11) is located at the bottom of the side wall of the water tank (1), the drain (13) is located at the bottom of the water tank (1), and the outlet (12) is located in the middle of the side wall of the water tank (1).
4. The water treatment constant pressure water supply device as described in claim 3, characterized in that: The connecting rod (32) has a uniformly connected brush (33) on its side wall, and a buoyancy detection device (4) is connected to its lower end.
5. A water treatment constant pressure water supply device as described in claim 4, characterized in that: The float (41) is cylindrical with a sphere at the bottom and a circular block (411) at the top. The diameter of the middle part of the groove (44) matches the diameter of the circular block (411), and the bottom part has a through hole that matches the diameter of the float (41).
6. A water treatment constant pressure water supply device as described in claim 5, characterized in that: The input terminal of the controller (6) is connected to the output terminals of the first pressure sensor (42) and the second pressure sensor (43), and the output terminal is connected to the input terminals of each electric valve and the cylinder (31).