Automatic water quality ph regulating device

Abstract

This utility model belongs to the technical field of aquaculture equipment, and particularly relates to an automatic pH adjustment device. Addressing the problems of low adjustment precision in existing devices and the difficulty in accurately controlling the amount of acid or alkali added manually, which easily leads to over-adjustment of pH, the following solution is proposed: an automatic pH adjustment device, including a casing with a partition installed inside. The beneficial effects of this utility model are: a pH sensor is located at the edge of the aquaculture pond with good flow, capturing real-time changes in water pH, transmitting the data to the terminal controller, and immediately initiating adjustment in case of abnormalities, with no detection lag, ensuring stable water quality; liquid dispensing is controlled by an electric slide rail, fine-tuning the connection between the dispensing hole and the dispensing pipe to control the amount; a spraying hood and stirring components help the liquid mix evenly; and the entire process is automatically controlled, significantly improving precision and avoiding excessive manual adjustment, providing stable and accurate water quality assurance for fish and shrimp farming.

Description

Technical Field

[0001] This utility model relates to a water quality pH adjustment device, specifically an automatic water quality pH adjustment device, belonging to the technical field of aquaculture equipment. Background Technology

[0002] In fish and shrimp farming, water pH is one of the key environmental factors affecting the growth, development, and survival of fish and shrimp. The suitable pH range is usually 7.5-8.5. When the pH is too high or too low, it will disrupt the physiological functions of fish and shrimp, leading to decreased appetite, slow growth, and even disease and death. In northern regions, due to the cold climate and low winter temperatures, fish and shrimp farming is mostly carried out in greenhouses or indoors. However, the water quality in the north is generally characterized by high hardness, and the chemical reaction rate in the water slows down under low temperatures, making the pH value prone to fluctuations and difficult to adjust.

[0003] In the prior art, such as the water quality pH self-regulating device disclosed in announcement number CN217230339U, this water quality pH self-regulating device uses the detection data of a water quality pH meter to understand the pH value of the water, and adds HCl solution to the water tank through a connecting pipe according to a certain ratio, and stirs it to fully mix the water and HCl solution, so that the water quality pH value reaches the normal range. This solves the problem that existing water quality pH regulating devices cannot effectively mix HCl solution with water quickly, which easily leads to unstable water quality pH value after adjustment. However, the above-mentioned prior art solutions have the following shortcomings: When using the above-mentioned water quality pH self-regulating devices, the water quality pH value adjustment mostly relies on manual operation. The pH value is sampled and tested periodically, and then acid or alkali solution is manually added according to the test results. This manual adjustment method has the following problems: low adjustment accuracy, difficulty in accurately controlling the amount of acid or alkali solution added manually, and easy to lead to over-adjustment of pH value. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pH adjustment device for water quality in order to solve the problems of low adjustment accuracy of the above-mentioned devices, difficulty in accurately controlling the amount of acid or alkali added manually, and easy over-adjustment of pH value.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: an automatic pH adjustment device for water quality, including an aquaculture pond and a pH sensor installed in the aquaculture pond; The surface of the aquaculture pond is equipped with an installation frame, and two storage boxes are symmetrically installed on the surface of the installation frame. The two storage boxes are used to store acidic and alkaline solutions for adjusting the pH value of the water, respectively. The bottom of the two storage boxes is connected to a feed pipe. The surface of the feed pipe is provided with a groove, and a control feed plate for controlling the opening and closing of the feed pipe is slidably connected in the groove. The surface of the control feed plate is provided with a feed hole. An electric slide rail is installed on one side of the mounting bracket. A guide block is slidably connected to the surface of the electric slide rail. An L-shaped connecting plate is fixedly installed at one end of the guide block. A control wedge plate is fixedly installed at one end of the L-shaped connecting plate. The control wedge plate pushes the control feeding plate on the corresponding feeding pipe to move, so that the feeding hole on the control feeding plate is connected to the inner diameter of the feeding pipe for dispensing acid / alkali solutions to adjust the pH value of the water.

[0006] As a further improvement of this utility model, the end of the control feed plate near the control wedge plate is arc-shaped.

[0007] As a further improvement of this utility model: the width of the feeding plate is controlled to be greater than the inner diameter of the feeding tube and less than the outer diameter of the feeding tube, and the size of the feeding hole is adapted to the inner diameter of the feeding tube.

[0008] As a further embodiment of this utility model: a T-shaped rod is slidably connected to one end surface of the control feeding plate, a fixing plate is installed at one end of the T-shaped rod, the fixing plate is fixedly installed on one side surface of the feeding tube, a return spring is sleeved on the outer surface of the T-shaped rod, one end of the return spring abuts against the fixing plate, and the other end of the return spring abuts against one side surface of the control feeding plate.

[0009] As a further embodiment of this utility model: a servo motor is fixedly installed on the bottom surface of the mounting bracket, a connecting shaft is installed on the output shaft end of the servo motor, a spray hood is installed on one end of the connecting shaft, the liquid outlet ends of the two control feed pipes are inclined towards the spray hood and extend to the top of the spray hood, the bottom surface of the spray hood has a ring of multiple leak holes for acid / alkali leakage, and multiple spray pipes are installed at an angle at the bottom end of the spray hood, and the multiple spray pipes are all connected to the spray hood.

[0010] As a further embodiment of this utility model: a rotating rod is fixedly connected to the bottom surface of the spraying cover, one end of the rotating rod is rotatably connected to the aquaculture pond, and multiple sets of stirring shafts and spiral stirring blades are installed on the outer surface of the rotating rod, with the spiral directions of two adjacent spiral stirring blades being opposite.

[0011] As a further improvement of this utility model: a protective cover is installed inside the aquaculture pond, the protective cover is placed on the outside of the stirring shaft and the spiral stirring blades, and the surface of the protective cover is provided with a number of micropores.

[0012] As a further improvement of this utility model: both storage tanks are provided with viewing windows on their surfaces, and the pH sensor, electric slide rail and servo motor are all connected to the terminal controller. The pH sensor is located at the edge of the aquaculture tank.

[0013] The beneficial effects of this utility model are: This utility model's pH sensor is directly installed inside the aquaculture pond, located at the edge where water flow is good. It can continuously capture changes in the overall pH value of the pond water without the need for regular manual sampling. The detected pH data is transmitted to the terminal controller in real time. The controller can quickly analyze whether the water quality deviates from the preset range. Once an abnormality is detected, the adjustment process is immediately initiated. There is no information lag caused by detection intervals. This real-time monitoring mode ensures that staff can grasp the dynamics of water quality at the first moment. The device can also automatically respond at the optimal adjustment time, avoiding missing the adjustment window due to insufficient manual detection frequency. It ensures that the water quality is always in a stable state suitable for fish and shrimp growth, providing stable and accurate water quality assurance for fish and shrimp farming. In terms of liquid dispensing control, the electric slide rail drives the control wedge plate to push the control feed plate. The connection between the feed hole and the inner diameter of the feed pipe can be finely adjusted by controlling the sliding distance, so as to accurately control the liquid outflow. At the same time, the width of the feed plate and the size of the feed hole are properly matched to ensure that the liquid passes through at a stable flow rate and avoids sudden increases or decreases in dispensing due to improper hole diameter. In the liquid diffusion stage, the spray hood, together with the leakage hole and the spray pipe, evenly covers the acid and alkali solutions to all areas of the aquaculture pond. The rotating rod drives the stirring shaft and the reverse spiral dispersing blades to accelerate the mixing and prevent excessive local liquid concentration from causing over-adjustment. The entire adjustment process does not require manual judgment of dosage. The terminal controller automatically controls the pH value based on real-time pH data, which greatly improves the adjustment accuracy and effectively avoids the problem of excessive pH adjustment caused by manual operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 In this utility model Figure 1 A schematic diagram of the side view structure; Figure 3 This is a schematic diagram of the structure of the L-shaped connecting plate and the control wedge plate in this utility model; Figure 4 This is a schematic diagram of the structure of the control feeding plate, T-shaped rod and fixing plate in this utility model; Figure 5 This is a schematic diagram of the connecting shaft and the protective cover in this utility model; Figure 6 This is a schematic diagram of the structure of the spraying cover, stirring shaft and rotating rod in this utility model; Figure 7 This is a schematic diagram of the structure of the leakage hole and the spraying pipe in this utility model.

[0015] In the diagram: 1. Aquaculture pond; 2. pH sensor; 3. Mounting frame; 4. Storage box; 5. Electric slide rail; 6. Guide block; 7. L-shaped connecting plate; 8. Control wedge plate; 9. Feed pipe; 10. Waist groove; 11. Control feed plate; 12. Feed hole; 13. Fixing plate; 14. Return spring; 15. T-shaped rod; 16. Servo motor; 17. Connecting shaft; 18. Spraying hood; 19. Spraying pipe; 20. Leakage hole; 21. Rotating rod; 22. Stirring shaft; 23. Spiral agitator blades; 24. Protective cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1 like Figures 1 to 7 As shown, an automatic pH adjustment device for water quality includes an aquaculture pond 1 and a pH sensor 2 installed in the aquaculture pond 1. An installation frame 3 is installed on the surface of the aquaculture pond 1. Two storage boxes 4 are symmetrically installed on the surface of the installation frame 3. The two storage boxes 4 are used to store acidic and alkaline solutions for adjusting the pH value of the water, respectively. The bottom of the two storage boxes 4 are connected to a feed pipe 9. A groove 10 is opened on the surface of the feed pipe 9. A control feed plate 11 for controlling the opening and closing of the feed pipe 9 is slidably connected in the groove 10. A feed hole 12 is opened on the surface of the control feed plate 11. An electric slide rail 5 is installed on one side of the mounting bracket 3. A guide block 6 is slidably connected to the surface of the electric slide rail 5. An L-shaped connecting plate 7 is fixedly installed at one end of the guide block 6. A control wedge plate 8 is fixedly installed at one end of the L-shaped connecting plate 7. The control wedge plate 8 pushes the control feeding plate 11 on the corresponding feeding pipe 9 to move, so that the feeding hole 12 on the control feeding plate 11 is connected to the inner diameter of the feeding pipe 9 for dispensing acid / alkali solution to adjust the pH value of the water.

[0018] Two symmetrically installed storage tanks 4 are used for independent storage of acid and alkali solutions, respectively. This avoids chemical reactions caused by mixing the acid and alkali solutions, ensuring the purity and effectiveness of the regulated liquid. The discharge pipe 9 serves as a liquid delivery channel, directly connecting the storage tanks 4 to the subsequent spraying components, ensuring directional flow of the acid / alkali solution and preventing leakage. The waist groove 10 provides a sliding trajectory for the control discharge plate 11, limiting its movement direction and ensuring that the control discharge plate 11 slides only along the preset path, avoiding opening and closing failures caused by deviation. The control discharge plate 11 opens and closes the discharge pipe 9 by sliding. With the discharge hole 12 on the surface, the liquid can flow smoothly when the discharge hole 12 is connected to the inner diameter of the discharge pipe 9; when misaligned, it closes. The structure is simple and reliable. Compared with traditional valve control, it has no complex sealing structure, reducing failures caused by liquid corrosion and lowering maintenance costs. At the same time, the sliding distance can be controlled. Fine-tuning the opening and closing degree lays the foundation for precise quantity control. The movable control wedge 8 is used to push the control feeding plate 11 on the corresponding feeding pipe 9 to move, so that the feeding hole 12 on the control feeding plate 11 is connected to the inner diameter of the feeding pipe 9 for the release of acid / alkali solution to adjust the pH value of the water. By directionally pushing the corresponding control feeding plate 11 by the control wedge 8, the release of acid or alkali solution can be controlled separately for different situations of acidic or alkaline water quality, making the adjustment more targeted. At the same time, the cooperation between the control wedge 8 and the control feeding plate 11 does not require complex electrical control components. Liquid flow can be realized by relying on mechanical structure, reducing the device's dependence on complex circuits, improving the operational stability in humid aquaculture environments, and reducing the risk of electrical failure. The water flow in the edge area of ​​the aquaculture pond 1 is better, which can reflect the overall water quality pH value in the pond and avoid the bias of detection data caused by local dead water areas.

[0019] Furthermore, the end of the control feed plate 11 near the control wedge plate 8 is arc-shaped.

[0020] The arc-shaped design transforms the point contact between the control wedge plate 8 and the control feed plate 11 into a surface contact, increasing the contact area while reducing frictional resistance. This avoids jamming or component wear caused by sharp edge contact, extending the service life of both. The arc-shaped surface has a natural guiding function. When the control wedge plate 8 pushes the control feed plate 11, the arc-shaped surface can automatically adapt to the contact angle, ensuring that the thrust is evenly transmitted to the control feed plate 11. This prevents excessive local force from causing deformation of the control feed plate 11, ensuring a smooth sliding process and improving the reliability of the opening and closing control of the feed tube 9.

[0021] Furthermore, the width of the feeding plate 11 is controlled to be greater than the inner diameter of the feeding tube 9 and less than the outer diameter of the feeding tube 9, and the size of the feeding hole 12 is adapted to the inner diameter of the feeding tube 9.

[0022] The width of the control feed plate 11 is greater than its inner diameter and less than its outer diameter, ensuring that it completely covers the inner diameter area of ​​the feed pipe 9. When closed, it can completely block the liquid flow, avoiding leakage of acid and alkali solutions due to incomplete coverage. The width being less than the outer diameter prevents the control feed plate 11 from exceeding the range of the feed pipe 9, avoiding interference with surrounding components such as the T-shaped rod 15 and the fixing plate 13, ensuring smooth sliding. The feed hole 12 is adapted to the inner diameter of the feed pipe 9, allowing the liquid to pass through at a stable flow rate. This avoids the situation where the orifice diameter is too large, causing a sudden increase in dosage and resulting in excessive pH adjustment, or the orifice diameter is too small, causing slow dosage and prolonging the adjustment time. This ensures that the dosage of acid and alkali solutions is accurately matched with the water quality adjustment requirements, improving the accuracy of pH adjustment.

[0023] Furthermore, a T-shaped rod 15 is slidably connected to one end surface of the control feed plate 11, and a fixing plate 13 is installed at one end of the T-shaped rod 15. The fixing plate 13 is fixedly installed on one side surface of the feed tube 9. A return spring 14 is sleeved on the outer surface of the T-shaped rod 15. One end of the return spring 14 abuts against the fixing plate 13, and the other end of the return spring 14 abuts against one side surface of the control feed plate 11.

[0024] The T-shaped rod 15 cooperates with the fixed plate 13 to provide dual limit and guide for the control feeding plate 11, ensuring that the control feeding plate 11 slides only along the axis of the T-shaped rod 15, avoiding lateral deviation or shaking, and further improving sliding stability; the reset spring 14 uses elastic force to automatically push the control feeding plate 11 back to the initial closed position after the control wedge plate 8 is reset.

[0025] Example 2 Improvements based on Example 1: Furthermore, a servo motor 16 is fixedly installed on the bottom surface of the mounting bracket 3. A connecting shaft 17 is installed on the output shaft end of the servo motor 16. A spray hood 18 is installed on one end of the connecting shaft 17. The liquid outlet ends of the two control discharge pipes 9 are inclined towards the spray hood 18 and extend to the top of the spray hood 18. The bottom surface of the spray hood 18 is evenly distributed with multiple leakage holes 20 for acid / alkali leakage. Multiple spray pipes 19 are installed at an angle at the bottom end of the spray hood 18. All multiple spray pipes 19 are connected to the spray hood 18.

[0026] The connecting shaft 17 serves as the core of power transmission, stably transmitting the rotational motion of the servo motor 16 to the spraying hood 18. Its high-strength structure can withstand the weight of the spraying hood 18 and the internal liquid, preventing breakage or deformation during rotation and ensuring stable operation of the spraying function. The spraying hood 18 achieves the diffusion and dispensing of acid and alkali solutions through rotation. Compared with traditional fixed pipe direct spraying, it can evenly cover a larger area of ​​liquid, solving the problem of uneven pH value in water caused by localized dispensing. When the spraying hood 18 rotates, the evenly distributed annular holes 20 use centrifugal force to evenly spray the liquid towards the central area of ​​the aquaculture pond 1, avoiding excessively high liquid concentration in the central area. The inclined spraying pipe 19 can project the liquid towards the edge of the aquaculture pond 1, covering the edge areas that are difficult for the holes 20 to reach, forming an all-round dispensing coverage, further improving the mixing uniformity of acid and alkali solutions with the water.

[0027] Furthermore, a rotating rod 21 is fixedly connected to the bottom surface of the spraying cover 18. One end of the rotating rod 21 is rotatably connected to the aquaculture pond 1. Multiple sets of stirring shafts 22 and spiral stirring blades 23 are installed on the outer surface of the rotating rod 21. The spiral directions of two adjacent spiral stirring blades 23 are opposite.

[0028] The rotating rod 21 rotates synchronously with the spraying cover 18, achieving the linkage of spraying and stirring without the need for an additional power source. This simplifies the device structure and reduces energy consumption. The stirring shaft 22 can directly stir the water, accelerating the fusion of acid and alkali solutions with the water, shortening the pH adjustment time, and improving adjustment efficiency. When the adjacent opposite spiral stirring blades 23 rotate, they can form an upward and downward convection of water flow (the forward spiral blades push water upward, and the reverse spiral blades press water downward), breaking the water stratification phenomenon and preventing acid and alkali solutions from remaining only on the surface or bottom of the water. This ensures that the regulating liquid quickly diffuses to all water layers in the aquaculture pond 1, ensuring a uniform pH value in the pond, preventing fish and shrimp from experiencing stress reactions due to local water quality discomfort, and improving the survival rate of aquaculture.

[0029] Furthermore, a protective cover 24 is installed inside the aquaculture pond 1. The protective cover 24 covers the outside of the stirring shaft 22 and the spiral stirring blades 23, and the surface of the protective cover 24 is provided with several micropores.

[0030] The protective cover 24 can effectively isolate the rotating stirring shaft 22 and the spiral stirring blades 23, preventing the fish and shrimp in the breeding pond 1 from being hit or scratched by the rotating parts. It plays a key protective role, especially for small juvenile fish and shrimp, ensuring their survival. The microporous design on the surface ensures that the water can flow freely without hindering the water flow generated by stirring and the diffusion of acid and alkali solutions. While achieving safety protection, it does not affect the pH adjustment effect.

[0031] Furthermore, both storage tanks 4 are equipped with viewing windows on their surfaces, and the pH sensor 2, electric slide rail 5, and servo motor 16 are all connected to the terminal controller via signals; the pH sensor 2 is located at the edge of the aquaculture tank 1.

[0032] The viewing window allows staff to visually observe the remaining levels of acid and alkali solutions in storage tank 4, enabling them to determine whether liquid replenishment is needed without opening the tank. This convenient and efficient operation reduces liquid evaporation or contamination caused by frequent tank opening. The terminal controller receives real-time data from pH sensor 2, quickly determines whether water quality needs adjustment through built-in algorithms, and automatically generates control commands. These commands synchronously drive electric slide rail 5 to adjust liquid dispensing and servo motor 16 to control spraying and stirring, significantly reducing manual intervention, lowering the labor intensity of aquaculture workers, and avoiding subjective errors from manual operation, thus improving adjustment accuracy and efficiency. Furthermore, the terminal controller automatically records the detection data from pH sensor 2 and the operating parameters of electric slide rail 5 and servo motor 16, forming a complete water quality adjustment log. This allows staff to trace the adjustment process, analyze water quality change patterns, and provide data support for subsequent optimization of aquaculture management strategies, promoting the intelligent and refined development of fish and shrimp farming.

[0033] Working principle: First, acidic and alkaline solutions for adjusting the pH value of the water are added to two storage tanks 4 symmetrically arranged on the surface of the mounting frame 3. The remaining liquid level inside the storage tanks 4 can be observed in real time through the viewing window on the surface of the storage tanks 4, which facilitates timely replenishment. Second, the appropriate pH threshold range for the aquaculture water is preset by the terminal controller (such as 7.5-8.5 commonly used in fish and shrimp farming). At the same time, the pH sensor 2, electric slide rail 5 and servo motor 16 are connected to the terminal controller to ensure that each component can receive controller commands and feed back operating data. In the initial state, the control feed plate 11 is in the initial position under the elastic force of the return spring 14. The return spring 14 is sleeved on the outer surface of the T-shaped rod 15. One end abuts against the fixed plate 13 fixedly installed on one side surface of the feed pipe 9, and the other end abuts against one side surface of the control feed plate 11. At this time, the feed hole 12 on the surface of the control feed plate 11 is misaligned with the inner diameter of the feed pipe 9. The feed pipe 9 remains closed, and acid or alkali cannot flow from the storage tank 4 into the subsequent components. At the same time, the guide block 6 on the surface of the electric slide rail 5 drives the L-shaped connecting plate 7 and the control wedge plate 8 to stay in the initial standby position and not contact the control feed plate 11. The servo motor 16 is in the stop state, and the spraying cover 18, the stirring shaft 22 and the spiral stirring blade 23 all remain stationary. After the device is started, the pH sensor 2, which is located at the edge of the aquaculture pond 1, continuously detects the pH value of the water in the aquaculture pond 1 and converts the real-time detected pH data into an electrical signal and transmits it to the terminal controller. After receiving the signal, the terminal controller compares and analyzes the detected pH value with the preset pH threshold range to determine whether the adjustment program needs to be started. If the detected pH value is within the preset threshold range, the device maintains the initial standby state and the pH sensor 2 continues to monitor in real time. If the detected pH value is higher than the upper limit of the preset threshold (i.e., the water quality is too alkaline) or lower than the lower limit of the preset threshold (i.e., the water quality is too acidic), the terminal controller generates the corresponding adjustment command and starts the subsequent adjustment process. When the terminal controller determines that the water quality is too acidic (pH value is lower than the preset lower limit) and alkali solution needs to be added for adjustment, the controller sends a command to the electric slide rail 5 to control the guide block 6 on the drive surface of the electric slide rail 5 to move along the slide rail direction. The guide block 6 drives the fixedly connected L-shaped connecting plate 7 to move synchronously, thereby causing the control wedge plate 8 fixedly installed at one end of the L-shaped connecting plate 7 to move towards the feed pipe 9 corresponding to the storage tank 4 storing alkali solution. As the control wedge 8 moves, it gradually contacts the control feed plate 11 on the feed tube 9 (the end of the control feed plate 11 near the control wedge 8 is arc-shaped to reduce frictional resistance during contact and ensure smooth pushing). Continuing to move the control wedge 8, it generates a horizontal thrust on the control feed plate 11, causing it to slide along the waist groove 10 (formed on the surface of the feed tube 9). At this time, the return spring 14 undergoes elastic deformation due to the compression of the control feed plate 11. When 11 slides to the preset position, the discharge hole 12 on its surface is fully connected to the inner diameter of the discharge pipe 9 (the size of the discharge hole 12 is adapted to the inner diameter of the discharge pipe 9, and the width of the discharge plate 11 is controlled to be greater than the inner diameter of the discharge pipe 9 and less than the outer diameter of the discharge pipe 9 to prevent liquid leakage from the gap). The alkali solution in the storage tank 4 flows out through the discharge pipe 9 and the discharge hole 12. Since the liquid outlet end of the discharge pipe 9 is inclined towards the spray hood 18 and extends to the top of the spray hood 18, the alkali solution flows directly into the interior of the spray hood 18. When the terminal controller detects that the pH value of the water has risen back to the preset threshold range through the pH sensor 2, the controller sends a reverse command to the electric slide rail 5, the control guide block 6 drives the control wedge plate 8 to reset, and the control feed plate 11 slides in the opposite direction along the waist groove 10 under the elastic restoring force of the reset spring 14. The inner diameter of the feed hole 12 and the feed pipe 9 are misaligned again, the feed pipe 9 is closed, and the alkaline solution feeding stops. When the terminal controller determines that the water quality is too alkaline (pH value is higher than the preset upper limit) and acid needs to be added for adjustment, its working process is the same as that of alkaline solution addition. The terminal controller controls the electric slide rail 5 to drive the guide block 6, L-shaped connecting plate 7 and control wedge plate 8 to move towards the feed pipe 9 corresponding to the storage tank 4 for storing acid. The control wedge plate 8 pushes the control feed plate 11 on the feed pipe 9 to slide, so that the feed hole 12 is connected to the inner diameter of the feed pipe 9. The acid flows into the spray hood 18 through the feed pipe 9. After the pH value drops to the preset range, the control wedge plate 8 resets, and the control feed plate 11 closes the feed pipe 9 under the action of the reset spring 14, and the acid addition stops. While the terminal controller sends the acid or alkali liquid injection command, it will simultaneously send a start command to the servo motor 16. The servo motor 16 is fixedly installed on the bottom surface of the mounting frame 3. The connecting shaft 17 installed at the output shaft end drives the spraying cover 18 connected at one end to rotate around the connecting shaft 17 as the axis. The acid or alkali liquid flowing into the spraying cover 18 is evenly sprayed into the water in the aquaculture pond 1 through multiple evenly distributed holes 20 in a ring on the bottom surface of the spraying cover 18 under the action of centrifugal force. The other part is diffused and sprayed in all directions through multiple spraying pipes 19 (all connected to the inside of the spraying cover 18) installed at an angle at the bottom end of the spraying cover 18, so as to achieve the initial uniform distribution of acid or alkali liquid in the aquaculture pond 1. Meanwhile, the rotating rod 21 installed on the bottom surface of the spray cover 18 rotates synchronously with the spray cover 18. One end of the rotating rod 21 is rotatably connected to the aquaculture pond 1. Multiple sets of stirring shafts 22 and spiral dispersing blades 23 installed on its outer surface rotate accordingly. The stirring shafts 22 stir the water and accelerate the mixing of acid or alkali with the water. Two adjacent spiral dispersing blades 23 are set in opposite spiral directions, which can form an upward and downward convection flow during rotation, further breaking up the water stratification, so that the acid or alkali can be quickly and evenly diffused to various areas in the aquaculture pond 1, avoiding sudden changes in the pH value of the local water. In addition, the protective cover 24 installed in the aquaculture pond 1 covers the outside of the stirring shaft 22 and the spiral stirring blades 23, which can prevent the fish and shrimp in the aquaculture pond 1 from colliding with the rotating parts and causing damage. At the same time, the several micro-holes on the surface of the protective cover 24 do not affect the flow and mixing of water, ensuring that the mixing effect is not affected. When the pH sensor 2 detects that the pH value of the water in the aquaculture pond 1 is stable within the preset threshold range, the terminal controller sends a command. On the one hand, it controls the electric slide rail 5 to drive the control wedge plate 8 to reset, so that the feed pipe 9 is closed and the acid or alkali solution is stopped. On the other hand, it controls the servo motor 16 to stop, and the spraying cover 18, stirring shaft 22 and spiral stirring blade 23 stop working. The device returns to the standby state, and the pH sensor 2 continues to monitor the pH value of the water in real time. If the pH value deviates from the preset range again, the device will repeat the above adjustment process to continuously maintain the stability of the pH value of the water.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic pH adjustment device for water quality, comprising an aquaculture pond (1) and a pH sensor (2) disposed within the aquaculture pond (1); characterized in that: The surface of the aquaculture pond (1) is equipped with an installation frame (3), and two storage boxes (4) are symmetrically installed on the surface of the installation frame (3). The two storage boxes (4) are used to store acidic and alkaline solutions for adjusting the pH value of the water, respectively. The bottom ends of the two storage boxes (4) are connected to a feed pipe (9). The surface of the feed pipe (9) is provided with a waist groove (10). A control feed plate (11) for controlling the opening and closing of the feed pipe (9) is slidably connected in the waist groove (10). The surface of the control feed plate (11) is provided with a feed hole (12). An electric slide rail (5) is installed on one side of the mounting bracket (3). A guide block (6) is slidably connected to the surface of the electric slide rail (5). An L-shaped connecting plate (7) is fixedly installed at one end of the guide block (6). A control wedge plate (8) is fixedly installed at one end of the L-shaped connecting plate (7). The control wedge plate (8) pushes the control feeding plate (11) on the corresponding feeding pipe (9) to move, so that the feeding hole (12) on the control feeding plate (11) is connected to the inner diameter of the feeding pipe (9) for dispensing acid / alkali solution to adjust the pH value of the water.

2. The automatic pH adjustment device for water quality according to claim 1, characterized in that: The end of the control feed plate (11) near the control wedge plate (8) is arc-shaped.

3. The automatic pH adjustment device for water quality according to claim 1, characterized in that: The width of the control feeding plate (11) is greater than the inner diameter of the feeding tube (9) and less than the outer diameter of the feeding tube (9), and the size of the feeding hole (12) is adapted to the inner diameter of the feeding tube (9).

4. The automatic pH adjustment device for water quality according to claim 1, characterized in that: A T-shaped rod (15) is slidably connected to one end surface of the control feed plate (11). A fixing plate (13) is installed at one end of the T-shaped rod (15). The fixing plate (13) is fixedly installed on one side surface of the feed tube (9). A return spring (14) is sleeved on the outer surface of the T-shaped rod (15). One end of the return spring (14) abuts against the fixing plate (13), and the other end of the return spring (14) abuts against one side surface of the control feed plate (11).

5. The automatic pH adjustment device for water quality according to claim 1, characterized in that: A servo motor (16) is fixedly installed on the bottom surface of the mounting bracket (3). A connecting shaft (17) is installed on the output shaft end of the servo motor (16). A spray hood (18) is installed on one end of the connecting shaft (17). The liquid outlet ends of the two control feed pipes (9) are inclined toward the spray hood (18) and extend to the top of the spray hood (18). The bottom surface of the spray hood (18) is evenly distributed with multiple leak holes (20) for acid / alkali leakage. Multiple spray pipes (19) are installed at the bottom end of the spray hood (18) at an angle. The multiple spray pipes (19) are connected to the spray hood (18).

6. The automatic pH adjustment device for water quality according to claim 5, characterized in that: The bottom surface of the spraying cover (18) is fixedly connected to a rotating rod (21). One end of the rotating rod (21) is rotatably connected to the breeding pond (1). Multiple sets of stirring shafts (22) and spiral stirring blades (23) are installed on the outer surface of the rotating rod (21). The spiral directions of two adjacent spiral stirring blades (23) are opposite.

7. The automatic pH adjustment device for water quality according to claim 6, characterized in that: The aquaculture pond (1) is equipped with a protective cover (24), which covers the outside of the stirring shaft (22) and the spiral stirring blades (23), and the surface of the protective cover (24) is provided with a number of micro-holes.

8. The automatic pH adjustment device for water quality according to claim 5, characterized in that: Both storage tanks (4) have viewing windows on their surfaces. The pH sensor (2), electric slide rail (5) and servo motor (16) are all connected to the terminal controller. The pH sensor (2) is located at the edge of the aquaculture pond (1).

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