Intelligent water quality circulating purification device for crab culture
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI CHUANGYUAN AGRI DEV CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional water quality control devices suffer from problems such as delayed control, high cost, and ecological damage. They cannot accurately control the dosage of chemical agents, leading to excessive or residual chemical agents, which damages the crab's osmotic pressure regulation system, affects its blood oxygen-carrying capacity, and causes abnormal molting.
The system employs an intelligent water circulation and purification device, including a purification mixing tank, an automatic dosing component, a PLC controller, a stirring motor, a filter screen, and sensors. This enables precise chemical dosing and closed-loop water quality management. The PLC controller adds chemicals at set times, the stirring rod mixes the water, and the filter screen filters the water, preventing excessive or residual chemicals.
This approach has protected the crabs, improved their survival rate, ensured water quality stability and aquaculture efficiency, and avoided sudden changes in water quality and equipment maintenance issues.
Smart Images

Figure CN224530644U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crab farming technology, and in particular to an intelligent water circulation and purification device for crab farming. Background Technology
[0002] The water level for crab farming needs to be adjusted according to the season and the crab's growth stage. In spring, shallow water farming helps raise the water temperature, promotes the growth of plankton, and increases natural food sources. In summer and autumn, as the crabs grow, increasing the water volume and using deeper water farming can correspondingly increase the crabs' living space and promote growth. Generally, the water depth is maintained at 0.6-1.5 meters, and can be adjusted to 1-1.2 meters during hot seasons.
[0003] As aquaculture develops towards intensification and intelligentization, traditional water quality control methods (such as artificial water changes and chemical agent administration) are no longer sufficient to meet the water quality stability requirements of high-density crab farming. As benthic crustaceans, crabs are extremely sensitive to water quality parameters such as dissolved oxygen, ammonia nitrogen, and pH. Deterioration in water quality can directly lead to reduced feeding, abnormal molting, and even large-scale mortality.
[0004] Existing traditional water exchange devices suffer from problems such as delayed regulation, high cost, and ecological damage. They cannot accurately control the dosage of chemical agents, which can lead to excessive or residual chemical agents that directly damage the crab's osmotic pressure regulation system, resulting in decreased blood oxygen-carrying capacity, abnormal molting, or even death. Utility Model Content
[0005] The purpose of this invention is to solve the problems of existing traditional water exchange devices, such as lagging regulation, high cost, and ecological damage. They cannot accurately control the addition of chemical agents, which can lead to excessive or residual chemical agents that directly damage the crab's osmotic pressure regulation system, resulting in decreased blood oxygen carrying capacity, abnormal molting, or even death.
[0006] To achieve the above objectives, the present invention adopts the following technical solution: an intelligent water circulation and purification device for crab farming, comprising a purification mixing tank, an automatic dosing component connected to the front surface of the purification mixing tank, the automatic dosing component including an inlet pipe, an outlet pipe connected to the bottom of the front of the purification mixing tank, an outlet water pump connected to one side of the outlet pipe, an inlet water pump connected to one side of the inlet pipe, a stirring motor connected to the center of the top of the purification mixing tank, a stirring rod connected to the output end of the stirring motor, a support frame connected to the top of one side of the purification mixing tank, four sets of support legs connected in a ring at the bottom of the support frame, a medicine cartridge sleeved inside the support frame, a first flow sensor connected to the bottom of the medicine cartridge, a solenoid valve connected to the bottom of the first flow sensor, a dosing pipe connected to the bottom of the solenoid valve, and a PLC controller connected to the outer surface of one side of the purification mixing tank.
[0007] Furthermore, the PLC controller is connected to an external power supply via a control switch, and the PLC controller is also connected to the first flow sensor and the solenoid valve via wires.
[0008] Furthermore, the output end of the stirring motor is fixedly connected to the stirring rod, and the support leg is L-shaped.
[0009] Furthermore, an anti-clogging component is connected to one side of the inlet pipe. The anti-clogging component includes a filter box, the surface of which has a groove, and a sealing ring is provided inside the groove.
[0010] Furthermore, a top cover is connected to the top of the filter box, and bolts are connected to the four corners of the top cover. A second flow sensor is connected to the side of the inlet pipe near the filter box.
[0011] Furthermore, the filter box is equipped with a first filter screen, a second filter screen, and a third filter screen, respectively, and an alarm is connected to the side of the purification mixing tank near the inlet water pump.
[0012] Furthermore, the alarm is connected to the second flow sensor by a wire.
[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, after the inlet water pump is turned on, the aquaculture water will enter the purification and mixing tank. Under the control of the PLC controller, the solenoid valve will open automatically to add medicine at regular intervals. With the use of the stirring rod, the mixing will be accelerated and the mixing effect will be improved. Finally, the water can be discharged into the aquaculture area through the outlet pipe for use. This avoids the problem of insufficient control of chemical agent dosage due to manual dosing, which may lead to excessive or residual chemical agents. This protects the crabs and improves their survival rate.
[0014] 2. In this utility model, the first filter screen, the second filter screen and the third filter screen filter particulate impurities of different sizes respectively. The second flow sensor can detect whether there is blockage. If blockage occurs, the alarm will be automatically activated to remind the operator to clean the filter screen. A closed-loop management is formed from water quality protection, equipment maintenance to aquaculture efficiency improvement, which can avoid the problem of sudden changes in water quality caused by filter failure. Attached Figure Description
[0015] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an intelligent water circulation and purification device for crab farming; Figure 2 This utility model provides a cross-sectional structural diagram of an intelligent water circulation and purification device for crab farming. Figure 3 This utility model provides a schematic diagram of the medicine cartridge structure of an intelligent water circulation and purification device for crab farming; Figure 4 This invention presents an exploded view of the filter box structure of an intelligent water circulation and purification device for crab farming.
[0016] Legend: 1. Purification mixing tank; 2. Automatic dosing assembly; 201. Inlet pipe; 202. Outlet pipe; 203. Outlet water pump; 204. Inlet water pump; 205. Stirring motor; 206. Stirring rod; 207. Support frame; 208. Drug cartridge; 209. First flow sensor; 210. Solenoid valve; 211. Dosing pipeline; 212. Support leg; 213. PLC controller; 3. Anti-clogging assembly; 301. Filter box; 302. Groove; 303. Sealing ring; 304. Top cover; 305. Bolt; 306. Second flow sensor; 307. First filter screen; 308. First filter screen; 309. Third filter screen; 310. Alarm. Detailed Implementation
[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0019] Example 1, as Figure 1 - Figure 3As shown, this utility model provides an intelligent water circulation and purification device for crab farming, including a purification mixing tank 1. An automatic dosing assembly 2 is connected to the front surface of the purification mixing tank 1. The automatic dosing assembly 2 includes an inlet pipe 201. An outlet pipe 202 is connected to the bottom of the front of the purification mixing tank 1. An outlet water pump 203 is connected to one side of the outlet pipe 202. An inlet water pump 204 is connected to one side of the inlet pipe 201. A stirring motor 205 is connected to the center of the top of the purification mixing tank 1. A stirring rod 206 is connected to the output end of the stirring motor 205. A support frame 207 is connected to the top of one side of the purification mixing tank 1. The bottom of the support frame 207 is annularly connected to... There are four sets of support legs 212. A medicine cartridge 208 is sleeved inside the support frame 207. A first flow sensor 209 is connected to the bottom of the medicine cartridge 208. A solenoid valve 210 is connected to the bottom of the first flow sensor 209. A dosing pipe 211 is connected to the bottom of the solenoid valve 210. A PLC controller 213 is connected to one side of the outer surface of the purification mixing tank 1. The PLC controller 213 is connected to an external power supply wire through a control switch. The PLC controller 213 is wired to the first flow sensor 209 and the solenoid valve 210. The output end of the stirring motor 205 is fixedly connected to the stirring rod 206. The support legs 212 are L-shaped.
[0020] The effect achieved in Embodiment 1 is as follows: the inlet water pump 204 can draw aquaculture water into the purification mixing tank 1 through the inlet pipe 201. The timed start program is input into the PLC controller 213, and the PLC controller 213 will open the solenoid valve 210 at regular intervals. After the solenoid valve 210 is opened, the medicine in the medicine cartridge 208 will enter the purification mixing tank 1 through the first flow sensor 209 and the medicine addition pipe 211. Under the action of the stirring motor 205, the stirring rod 206 will drive the aquaculture water and medicine to quickly mix. When the added medicine reaches the required dosage, the first flow sensor 209 will send an electrical signal to the PLC controller 213. After receiving the signal, the PLC controller 213 will automatically close the solenoid valve 210 and stop the medicine addition. Then, under the action of the outlet pipe 202 and the outlet water pump 203, the water source will flow back into the aquaculture pond to achieve the problem of recycling. This avoids the problem of insufficient control of chemical medicine dosage by manual medicine addition, which may lead to excessive or residual chemical medicine. This protects the crabs and improves their survival rate.
[0021] Example 1, as Figure 1 and Figure 4As shown, an anti-clogging component 3 is connected to one side of the inlet pipe 201. The anti-clogging component 3 includes a filter box 301. A groove 302 is provided on the surface of the filter box 301. A sealing ring 303 is provided inside the groove 302. A top cover 304 is connected to the top of the filter box 301. Bolts 305 are connected to the four corners of the top cover 304. A second flow sensor 306 is connected to the side of the inlet pipe 201 near the filter box 301. A first filter screen 307, a second filter screen 308, and a third filter screen 309 are respectively connected inside the filter box 301. An alarm 310 is connected to the side of the purification mixing tank 1 near the inlet water pump 204. An electrical wire connection is formed between the alarm 310 and the second flow sensor 306.
[0022] The effect achieved in Embodiment 1 is that the second flow sensor 306 can be used to monitor the flow rate of the inlet pipe 201 in real time. When a lot of impurities are adsorbed on the surfaces of the first filter screen 307, the second filter screen 308, and the third filter screen 309, the second flow sensor 306 will clearly sense the decrease in water flow and then automatically activate the alarm 310 to remind the operator to clean the inside of the filter box 301 in time. During cleaning, the filter box 301 is completely removed, and then the top cover 304 and the sealing ring 303 are removed. At this time, the first filter screen 307, the second filter screen 308, and the third filter screen 309 are taken out and the surface impurities are cleaned. They are then placed into the filter box 301 in sequence, and the sealing ring 303 is placed behind the groove 302. Finally, the top cover 304 is fixed to the surface of the filter box 301 by bolts 305.
[0023] Working principle: After the inlet water pump 204 is turned on, the aquaculture water will enter the purification mixing tank 1. Under the control of the PLC controller 213, the solenoid valve 210 will open automatically to add medicine at regular intervals. With the use of the stirring rod 206, the mixing will be accelerated and the mixing effect will be improved. Finally, it can be discharged into the aquaculture area through the outlet pipe 202 for use. This avoids the problem of insufficient control of chemical agent dosage by manual dosing, which may lead to excessive or residual chemical agents. This protects the crabs and improves their survival rate. The first filter screen 307, the second filter screen 308 and the third filter screen 309 filter impurities of different sizes respectively. The second flow sensor 306 can detect whether there is a blockage. If a blockage occurs, the alarm 310 will automatically open to remind the operator to clean the filter screen. A closed-loop management system is formed from water quality protection, equipment maintenance to aquaculture efficiency improvement, which can avoid the problem of sudden changes in water quality caused by filtration failure.
[0024] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.
Claims
1. A crab farming intelligent water quality circulating purification device, comprising a purification stirring tank (1), characterized in that: The front end surface of the purification stirring box (1) is connected with an automatic medicine feeding assembly (2); The automatic medicine feeding assembly (2) comprises a liquid inlet pipe (201), the bottom of the front end of the purification stirring box (1) is connected with a liquid outlet pipe (202), one side of the liquid outlet pipe (202) is connected with a liquid outlet pump (203), one side of the liquid inlet pipe (201) is connected with a liquid inlet pump (204), the top center of the purification stirring box (1) is connected with a stirring motor (205), the output end of the stirring motor (205) is connected with a stirring rod (206), the top of one side of the purification stirring box (1) is connected with a support frame (207), the bottom of the support frame (207) is connected with four groups of support legs (212) in a ring shape, the inside of the support frame (207) is sleeved with a medicine cartridge (208), the bottom of the medicine cartridge (208) is connected with a first flow sensor (209), the bottom of the first flow sensor (209) is connected with a solenoid valve (210), the bottom of the solenoid valve (210) is connected with a medicine feeding pipeline (211), the outer surface of one side of the purification stirring box (1) is connected with a PLC controller (213).
2. The intelligent water quality circulating purification device for crab culture according to claim 1, characterized in that: The PLC controller (213) is connected with an external power line through a control switch, and the PLC controller (213) is connected with the first flow sensor (209) and the solenoid valve (210) through wires.
3. The intelligent water quality circulating purification device for crab culture according to claim 2, characterized in that: The output end of the stirring motor (205) is fixedly connected with the stirring rod (206), and the support legs (212) are L-shaped.
4. The intelligent water quality circulating purification device for crab culture according to claim 1, characterized in that: One side of the liquid inlet pipe (201) is connected with an anti-blocking assembly (3), the anti-blocking assembly (3) comprises a filter box (301), the surface of the filter box (301) is provided with a groove (302), and the inside of the groove (302) is provided with a sealing ring (303).
5. The intelligent water quality circulating purification device for crab culture according to claim 4, characterized in that: The top of the filter box (301) is connected with a top cover (304), the four corners of the top cover (304) are connected with bolts (305), and one side of the liquid inlet pipe (201) close to the filter box (301) is connected with a second flow sensor (306).
6. The intelligent water quality circulating purification device for crab culture according to claim 5, characterized in that: The inside of the filter box (301) is connected with a first filter screen (307), a second filter screen (308) and a third filter screen (309) respectively, and one side of the purification stirring box (1) close to the liquid inlet pump (204) is connected with an alarm (310).
7. The intelligent water quality circulating purification device for crab culture according to claim 6, characterized in that: The alarm (310) is connected with the second flow sensor (306) through wires.