Liquid level floating ball valve and dosing device
By designing a level float valve that combines mechanical and electrical signal detection, the problems of low control efficiency and poor reliability of existing dosing devices have been solved, achieving precise control of water level and consistency of drug concentration.
Patent Information
- Application Number
- CN202520498203.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Existing dosing devices suffer from inefficient control methods, high labor costs, and are prone to misoperation. Existing float valves cannot control the lower limit of water level, and solenoid valves have poor control reliability and are prone to failure in the event of circuit failure or power outage.
A liquid level float valve was designed, which combines mechanical structure and electrical signal detection. The valve core movement is controlled by a float drive mechanism, and a reed switch is set in the valve body to detect the upper and lower limits of the water level. It works in conjunction with a solenoid valve to achieve precise control.
It achieves precise control of water level, improves the reliability and control accuracy of the device, avoids overflow problems caused by electrical failure, and ensures the consistency of drug concentration.
Smart Images
Figure CN223768230U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a liquid level float valve and a dosing device. Background Technology
[0002] The treatment of phosphorus-containing wastewater is a significant environmental issue. With continuous improvements and development in phosphorus removal technology, the types of phosphorus removal agents are also increasing. Currently, commonly used phosphorus removal agents mainly include aluminum salts, iron salts, calcium salts, and composite phosphorus removal agents. In practical applications, most wastewater treatment plants use a mixture of iron and aluminum salts for phosphorus removal. This method removes phosphorus from the water through a series of adsorption and coagulation reactions, achieving good results and stable effluent, thus meeting the expected phosphorus removal requirements.
[0003] In the application of phosphorus removal agents, the agent is typically mixed with water and pumped into the reaction tank via a dosing device. Existing dosing devices usually rely on manual control of the influent flow; after adding a certain amount of tap water and phosphorus removal agent, the dosing must be stopped to prevent overflow or changes in agent concentration. However, this manual control method requires on-site monitoring, is inefficient, has high labor costs, is inconvenient to operate, and is prone to misoperation or untimely control. Existing technologies also use float valves to control water levels, but these valves can only control the upper limit, not the lower limit. Furthermore, there are methods using level gauges in conjunction with solenoid valves for control, but this purely circuit-based approach has poor reliability; a circuit fault or power outage can lead to control failure. Utility Model Content
[0004] The purpose of this utility model is to provide a liquid level float valve with a novel structure, simple operation, and mechanical reliability, while also transmitting electrical signals to control the upper and lower limits of the water level.
[0005] Another objective of this invention is to provide a dosing device that uses the aforementioned float valve to control the water level. This device not only offers high control accuracy but also high reliability, making it better suited for use in wastewater treatment.
[0006] The embodiments of this utility model are implemented as follows:
[0007] A level float valve includes a valve housing, a valve core, and a float drive mechanism for driving the valve core. The valve housing is divided into a first cavity and a second cavity by a baffle arranged along its height. The valve housing includes an end wall located on one side of the first cavity, with an inlet that penetrates the valve housing and communicates with the first cavity. The bottom wall of the first cavity has an outlet. The valve core is slidably embedded in the first cavity, and a sliding rod is provided on the side of the valve core away from the inlet. A through hole is provided on the baffle, and the sliding rod slides into the through hole and extends into the second cavity. A first reed switch and a second reed switch are spaced apart on the top wall of the second cavity. A magnetic block is provided on the side of the sliding rod facing the top wall of the second cavity. When the valve core abuts against the baffle, the magnetic block faces the first reed switch; when the valve core abuts against the end wall, the magnetic block faces the second reed switch.
[0008] Furthermore, in other preferred embodiments of this utility model, an elastic sealing ring is provided on the inner wall of the through hole.
[0009] Furthermore, in other preferred embodiments of this utility model, the valve core is provided with a plug at one end facing the water inlet, and the size of the plug matches the water inlet.
[0010] Furthermore, in other preferred embodiments of this utility model, a gap is provided between the valve core and the cavity wall of the first cavity.
[0011] Furthermore, in other preferred embodiments of this utility model, the float drive mechanism includes a float and a connecting rod, one end of the connecting rod is connected to the float, and the other end is hinged to the valve housing; a guide groove is provided at the bottom of the sliding rod, and a lever is provided at the end of the connecting rod away from the float, with the end of the lever embedded in the guide groove.
[0012] A dosing device includes a tank, with a water inlet at the top of the tank and the aforementioned liquid level float valve installed at the water inlet.
[0013] Furthermore, in other preferred embodiments of this utility model, the dosing device further includes a water inlet pipe connected to the water inlet, and a solenoid valve is provided on the water inlet pipe.
[0014] Furthermore, in other preferred embodiments of this utility model, the dosing device also includes a control module, and the first reed switch, the second reed switch, and the solenoid valve are all electrically connected to the control module.
[0015] The beneficial effects of this utility model embodiment are:
[0016] This invention provides a liquid level float valve, comprising a valve body, a valve core, and a float drive mechanism for driving the valve core. It retains the mechanical structure of a traditional float valve and allows for valve opening and closing control via a float. Furthermore, a first reed switch and a second reed switch are spaced apart on the top wall of the second chamber, allowing for water level detection via electrical signal transmission and control of upper and lower water level limits in conjunction with a solenoid valve. This invention also provides a dosing device, comprising a tank with an inlet at the top, where the aforementioned liquid level float valve is located. This device offers not only high control precision but also strong reliability, making it better suited for wastewater treatment applications. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A cross-sectional view of a liquid level float valve in its first state, provided for an embodiment of this utility model;
[0019] Figure 2 This is a cross-sectional view of a liquid level float valve in a second state, provided as an embodiment of the present invention.
[0020] Icons: 100-Level float valve; 110-Valve housing; 111-Baffle; 1111-Elastic sealing ring; 112-First chamber; 1121-Inlet; 1122-Outlet; 113-Second chamber; 1131-First reed switch; 1132-Second reed switch; 114-End wall; 120-Valve core; 121-Sliding rod; 122-Magnetic block; 123-Plug; 124-Guide groove; 130-Float drive mechanism; 131-Float; 132-Connecting rod; 133-Lever. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. Example
[0026] This embodiment provides a liquid level float valve 100, referring to... Figure 1 As shown, it includes a valve housing 110, a valve core 120, and a float drive mechanism 130 for driving the movement of the valve core 120.
[0027] Among them, such as Figure 1 As shown, the valve housing 110 is internally divided into a first cavity 112 and a second cavity 113 by a baffle 111 arranged along its height. The valve housing 110 includes an end wall 114 located on one side of the first cavity 112, with an inlet 1121 that penetrates the valve housing 110 and communicates with the first cavity 112. The bottom wall of the first cavity 112 has an outlet 1122. The valve core 120 is slidably embedded in the first cavity 112. A sliding rod 121 is provided on the side of the valve core 120 away from the inlet 1121. A through hole (not shown) is provided on the baffle 111. The sliding rod 121 slides with the through hole and extends into the second cavity 113. The valve core 120 can move towards the inlet 1121 under the drive of the float drive mechanism 130 and block the inlet 1121, thereby cutting off the water flow. When the valve core 120 moves away from the inlet 1121, the water flow can be restored.
[0028] Furthermore, the top wall of the second cavity 113 is spaced apart by a first reed switch 1131 and a second reed switch 1132. A magnetic block 122 is provided on the side of the sliding rod 121 facing the top wall of the second cavity 113. When the valve core 120 abuts against the baffle 111, the magnetic block 122 is directly opposite the first reed switch 1131, triggering an electrical signal to indicate that the water level has reached the lower limit. When the valve core 120 abuts against the end wall 114, the magnetic block 122 is directly opposite the second reed switch 1132, triggering an electrical signal to indicate that the water level has reached the upper limit. This configuration, when used alone, can detect the upper and lower limits of the water level and prompt the operator to perform corresponding operations. When used in conjunction with a solenoid valve (not shown), it can achieve the effect of controlling the upper and lower limits of the water level.
[0029] like Figure 1 or Figure 2 As shown, an elastic sealing ring 1111 is provided on the inner wall of the through hole. The elastic sealing ring 1111 can prevent liquid from entering the second cavity 113 from the first cavity 112, thereby better protecting the electrical components.
[0030] The valve core 120 has a plug 123 at one end facing the water inlet 1121, and the size of the plug 123 matches that of the water inlet 1121. The plug 123 can be inserted into the water inlet 1121 to better cut off the water flow.
[0031] Furthermore, a gap (not shown) is provided between the valve core 120 and the cavity wall of the first cavity 112. The gap allows water to flow before and after the valve core 120, avoiding the problem of excessive resistance when the valve core 120 moves.
[0032] Optionally, the float drive mechanism 130 includes a float 131 and a connecting rod 132. One end of the connecting rod 132 is connected to the float 131, and the other end is hinged to the valve housing 110. A guide groove 124 is provided at the bottom of the sliding rod 121, and a lever 133 is provided at the end of the connecting rod 132 away from the float 131. The end of the lever 133 is embedded in the guide groove 124. The length of the guide groove 124 is designed according to the movement displacement of the valve core 120. Figure 1 Taking the perspective of [unclear context] as an example, when the lever 133 is turned to the right, the lever 133 contacts the right side wall of the guide groove 124 and pushes the valve core 120 to slide to the right, ultimately closing the inlet 1121. When the lever 133 is turned to the left, the lever 133 contacts the left side wall of the guide groove 124 and pushes the valve core 120 to slide to the left, ultimately abutting against the baffle 111.
[0033] This embodiment also provides a dosing device, which includes a tank, with an inlet 1121 at the top of the tank and the aforementioned liquid level float valve 100 at the inlet 1121.
[0034] Furthermore, the dosing device also includes a water inlet pipe connected to the water inlet 1121, and a solenoid valve is installed on the water inlet pipe. The dosing device also includes a control module, and the first reed switch 1131, the second reed switch 1132, and the solenoid valve are all electrically connected to the control module.
[0035] The dosing device operates as follows:
[0036] As the water level drops, the float 131 moves downward, causing the lever 133 to rotate to the left; the lever 133 pushes the left side wall of the guide groove 124, causing the valve core 120 to slide to the left, eventually abutting against the baffle 111, achieving the desired effect. Figure 1In this state, the magnetic block 122 is facing the first reed switch 1131. The first reed switch 1131 is triggered and transmits an electrical signal to the control module. The control module controls the solenoid valve to open and perform water replenishment.
[0037] As water is replenished, the water level rises, causing the float 131 to move upwards, which in turn rotates the lever 133 to the right. The lever 133 pushes the right side wall of the guide groove 124, causing the valve core 120 to slide to the right, ultimately sealing the inlet 1121, achieving the desired effect. Figure 2 In this state, the magnetic block 122 is facing the second reed switch 1132. The second reed switch 1132 is triggered and transmits an electrical signal to the control module. The control module controls the solenoid valve to close, and the water replenishment operation is completed.
[0038] This design retains the mechanical control mode of traditional float valves, effectively preventing overflow problems in case of electrical failure or power outage. Furthermore, with traditional float valves, water replenishment begins as soon as the valve core 120 leaves the inlet 1121 when the water level drops slightly. However, in wastewater treatment dosing devices, chemical powder and water need to be mixed to form a solution, and the traditional float valve's operating mode makes it difficult to control the concentration of the solution. In this embodiment, the dosing device incorporates a solenoid valve. When the water level drops, the solenoid valve remains closed, and water replenishment does not begin even when the valve core 120 leaves the inlet 1121. Water replenishment only begins when the lower water level limit is triggered. The amount of water replenished each time is controllable; that is, the difference between the lower and upper water levels is controlled by calculating the amount of chemical powder needed. A fixed amount of powder is added manually or automatically during the replenishment process, ensuring a consistent chemical concentration after each replenishment.
[0039] In summary, this utility model embodiment provides a liquid level float valve 100, which includes a valve body 110, a valve core 120, and a float drive mechanism 130 for driving the movement of the valve core 120. It retains the mechanical structure of a traditional float valve, and the opening and closing of the valve can be controlled by the float 131. Furthermore, a first reed switch 1131 and a second reed switch 1132 are spaced apart on the top wall of the second cavity 113, which can detect the water level by transmitting electrical signals and can also be used in conjunction with a solenoid valve to control the upper and lower limits of the water level. This utility model embodiment also provides a dosing device, which includes a tank with an inlet 1121 at the top, and the aforementioned liquid level float valve 100 is installed at the inlet 1121. It not only has high control accuracy but also strong reliability, making it better suited for wastewater treatment.
[0040] The above description is merely a preferred 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 liquid level float and ball valve characterized by, The valve includes a valve shell, a valve core, and a floating ball driving mechanism for driving the valve core to move, the valve shell is divided into a first cavity and a second cavity by a baffle arranged in the height direction of the valve shell, the valve shell includes an end wall on one side of the first cavity, the end wall is provided with a water inlet, the water inlet communicates with the first cavity through the valve shell, and the bottom wall of the first cavity is provided with a water outlet; the valve core is slidably embedded in the first cavity, the valve core is provided with a sliding rod on the side away from the water inlet, the baffle is provided with a through hole, the sliding rod is in sliding fit with the through hole and extends into the second cavity; the top wall of the second cavity is provided with a first dry reed tube and a second dry reed tube at intervals, the sliding rod is provided with a magnetic block on the side facing the top wall of the second cavity, the magnetic block faces the first dry reed tube when the valve core abuts against the baffle, and the magnetic block faces the second dry reed tube when the valve core abuts against the end wall.
2. The liquid level float and ball valve according to claim 1, characterized in that An elastic sealing ring is arranged on the inner wall of the through hole.
3. The liquid level float and ball valve according to claim 2, wherein, The valve core is provided with a plug part at the end facing the water inlet, and the size of the plug part matches that of the water inlet.
4. The liquid level float and ball valve according to claim 3, characterized in that A gap is arranged between the valve core and the cavity wall of the first cavity.
5. The liquid level float and ball valve according to claim 4, wherein, The floating ball driving mechanism includes a floating ball and a connecting rod, one end of the connecting rod is connected with the floating ball, and the other end is hingedly connected with the valve shell; the bottom of the sliding rod is provided with a guide groove, and the end of the connecting rod away from the floating ball is provided with a lever, and the end of the lever is embedded in the guide groove.
6. A dosing device, characterized in that The water inlet is provided with the liquid level floating ball valve according to any one of claims 1-5.
7. The dosing device of claim 6, wherein, The dosing device further includes a water inlet pipe in communication with the water inlet, and the water inlet pipe is provided with an electromagnetic valve.
8. The dosing device of claim 7, wherein, The dosing device further includes a control module, and the first dry reed tube, the second dry reed tube, and the electromagnetic valve are electrically connected with the control module.