High-alkalinity wastewater pH self-adaptive polyaluminum chloride preparation equipment

Abstract

The utility model discloses a kind of high-alkalinity wastewater pH self-adaptive type polyaluminium chloride preparation equipment, including protective tank, the inside fixed mounting of protective tank has inner tank, the top of protective tank is fixedly installed with feed pipe, the inner cavity of feed pipe is connected with the inner cavity of inner tank, the top of protective tank is provided with the stirring assembly for the material inside inner tank is stirred, the top of protective tank is provided with the monitoring assembly for the acid-base value of the material inside inner tank is monitored, heating assembly is arranged between protective tank and inner tank for the temperature rise of inner tank, the utility model is set through the setting of monitoring assembly, acid-base degree sensor real-time acquisition inner tank material's acid-base value, data is fed back to controller, once the material acid-base value deviates from setting range is detected, controller controls push component, selects acidic or alkaline solution from storage mechanism and injects into inner tank, promptly adjusts acid-base environment, effectively avoids high-alkalinity wastewater alkaline fluctuation interference polyaluminium chloride hydrolysis polymerization reaction.

Description

Technical Field

[0001] This utility model relates to the technical field of pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater, specifically a pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater. Background Technology

[0002] The special environment of high-alkalinity wastewater gives the prepared polyaluminum chloride certain characteristics in terms of structure and performance. Under high-alkalinity conditions, the hydrolysis and polymerization reactions of aluminum ions may be better controlled, making the molecular structure of the product more reasonable and the basicity higher, thus having a better flocculation effect and a stronger ability to remove pollutants such as suspended solids, colloids and heavy metal ions from wastewater.

[0003] Currently, Chinese patent CN219596577U discloses an adaptive feeding polyaluminum chloride reactor, including a reactor body; a drive motor is embedded in the center of the top surface of the reactor body; it also includes drive rods rotatably mounted on both the left and right sides of the reactor body via bearings; the left and right sides of the material storage box are fixedly connected to the top of the feeding channel; a drive gear is rotatably mounted on the center of the drive frame via bearings, and driven gears are rotatably mounted on both the left and right sides of the drive frame via bearings. This adaptive feeding polyaluminum chloride reactor uses the drive gear inside the reactor body to drive the rotating guide rod and grinding scraper to grind the material on the top surface of the sieve cone plate, preventing blockages and incomplete reactions during subsequent reactions. A feeding meter, in conjunction with a metering device, controls the continuous feeding of equal amounts of material into the reactor body.

[0004] The aforementioned adaptive feeding polyaluminum chloride reactor still has some problems in use. It cannot monitor the pH value of the material, so the alkalinity fluctuation of high alkalinity wastewater will seriously interfere with the hydrolysis and polymerization reaction of polyaluminum chloride, making it difficult to ensure the stability of the product's basicity, and thus affecting the product's flocculation performance. Utility Model Content

[0005] The purpose of this invention is to provide a pH-adaptive polyaluminum chloride preparation device for high-alkalinity wastewater, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pH-adaptive polyaluminum chloride preparation device for high-alkalinity wastewater includes a protective tank, an inner tank fixedly installed inside the protective tank, a feed pipe fixedly installed on the top of the protective tank, the inner cavity of the feed pipe being connected to the inner cavity of the inner tank, a stirring component for stirring the material inside the inner tank being provided on the top of the protective tank, a monitoring component for monitoring the pH value of the material inside the inner tank being provided on the top of the protective tank, and a heating component for heating the inner tank being provided between the protective tank and the inner tank.

[0008] The monitoring component includes a controller fixedly installed on the upper surface of one side of the protective tank. An acid-base sensor is fixedly installed on the top of the protective tank. The acquisition end of the acid-base sensor penetrates downward through the protective tank and extends into the inner cavity of the inner tank. The signal output end of the acid-base sensor is electrically connected to the signal input end of the controller via a wire. A storage mechanism for storing acidic and alkaline solutions is fixedly installed on the upper surface of the other side of the protective tank. A pushing component for pushing solutions into the inner tank is provided on the lower part of the other side of the protective tank. The pushing component is connected to the storage mechanism via a connecting piece. The controller can control the pushing component to operate based on the values ​​fed back by the acid-base sensor.

[0009] As a preferred technical solution, the storage mechanism includes a support frame fixedly installed on the upper surface of the other side of the protective tank. Two sets of storage boxes are placed on the surface of the support frame, and the two sets of storage boxes respectively contain an acidic solution and an alkaline solution.

[0010] As a preferred technical solution, the pushing component includes a conveying pipe fixedly installed on the lower surface of the other side of the protective tank. One end of the conveying pipe extends inward and communicates with the inner cavity of the inner tank. One end of the conveying pipe is provided with an anti-backflow component to prevent the material inside the inner tank from flowing back into the conveying pipe. The other end of the conveying pipe is connected to a piston cylinder. A piston disc is slidably connected to the inner cavity of the piston cylinder. A fixing plate is fixedly connected to the opening of the piston cylinder. An electric push rod is fixedly installed on the surface of the fixing plate. The telescopic end of the electric push rod passes through the fixing plate and is fixedly connected to the surface of the piston disc. The signal input end of the electric push rod is electrically connected to the signal output end of the controller through a wire.

[0011] As a preferred technical solution, the connecting component includes a three-way pipe connected to the end of the piston cylinder. The two sets of output ends of the three-way pipe are respectively connected to solenoid valves. The output ends of the two sets of solenoid valves are respectively connected to connecting pipes. The other ends of the two sets of connecting pipes are respectively connected to the inner cavity of the corresponding side storage box. The input ends of the two sets of solenoid valves are respectively electrically connected to the signal output end of the controller through wires and are both controlled by the controller.

[0012] As a preferred technical solution, the anti-backflow assembly includes an installation plate fixedly installed inside one end of the conveying pipe. A sealing disc is sealed and inserted into the opening of the conveying pipe. A connecting rod is fixedly connected to one end of the sealing disc. The end of the connecting rod passes through the installation plate and is fixedly connected to a fixing disc. A conical spring is sleeved on the surface of the connecting rod between the fixing disc and the installation plate. A limiting disc is fixedly sleeved on the surface of the connecting rod located between the sealing disc and the fixing plate.

[0013] As a preferred technical solution, the heating assembly includes a heat-conducting layer disposed between the inner tank and the protective tank, an electric heating tube disposed between the inner tank and the protective tank, the electric heating tube being controlled by a controller, a temperature sensor being fixedly installed at the bottom of the protective tank, the detection end of the temperature sensor extending upward to the space between the inner tank and the protective tank to monitor the temperature of the heat-conducting layer, and the signal output end of the temperature sensor being electrically connected to the signal input end of the controller via a wire.

[0014] As a preferred technical solution, the stirring assembly includes a drive motor fixedly installed on the top of the protective tank. The output end of the drive motor is keyed to a transmission rod. The end of the transmission rod rotates downward through the protective tank and extends into the interior of the inner tank. A stirring plate is fixedly connected to the end of the transmission rod located inside the inner tank.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, through the setup of a monitoring component, a stirring component, and a heating component, uses an acid-base sensor to collect the acid-base value of the material in the inner tank in real time and feeds the data back to the controller. Once the acid-base value of the material deviates from the set range, the controller can quickly control the push component to select an acidic or alkaline solution from the storage mechanism and inject it into the inner tank, thus adjusting the acid-base environment of the material in a timely manner. This effectively avoids interference from the alkalinity fluctuations of high-alkalinity wastewater with the hydrolysis and polymerization reaction of polyaluminum chloride, ensuring that the reaction takes place at a suitable acid-base level, guaranteeing the stability of the product's basicity, and improving the product's flocculation performance. At the same time, the stirring component can make the material mix more evenly, ensuring that the data collected by the acid-base sensor is more representative, and also allowing the adjusted acid-base solution to fully react with the material. In addition, the heating component provides a suitable temperature environment for the material reaction. Together with the monitoring and adjustment functions, it ensures the smooth progress of the polyaluminum chloride reaction from multiple aspects. Compared with single-function devices, it can better deal with the problem of acid-base value fluctuations of the material.

[0017] 2. This utility model, through the setting of the pushing component, allows the electric push rod to drive the piston disc to move inside the piston cylinder, which can precisely control the amount of acid and alkali solution pushed into the inner tank. Based on the value fed back by the acidity and alkalinity sensor, the controller can accurately calculate the required amount of solution and achieve quantitative pushing through the electric push rod, avoiding adding too much or too little solution, ensuring that the acidity and alkalinity of the material are accurately adjusted to the appropriate range, stabilizing the reaction process of polyaluminum chloride, and improving product quality.

[0018] 3. By setting up an anti-backflow component, this utility model can ensure that the solution flows smoothly into the inner tank during the solution pushing process, and can also quickly prevent the material backflow when pushing stops, maintaining the stability of the solution flow direction in the conveying pipe, ensuring that the acid-base adjustment process is not disturbed by the material backflow, so that each adjustment operation can be completed as expected, ensuring the stability of the polyaluminum chloride reaction environment, and thus stabilizing the product performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the protective tank and inner tank of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the tee pipe of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the piston cylinder and conveying pipe of this utility model.

[0023] In the picture:

[0024] 100. Protective tank; 101. Feed pipe; 102. Valve; 103. Discharge pipe; 104. Inner tank;

[0025] 200. Controller; 201. Electric heating element; 202. pH sensor; 203. Temperature sensor; 204. Thermal conductive layer;

[0026] 300. Drive motor; 301. Transmission rod; 302. Stirring plate;

[0027] 400. Support frame; 401. Storage box; 402. T-shaped pipe; 403. Connecting pipe; 404. Solenoid valve;

[0028] 500. Piston cylinder; 501. Fixing plate; 502. Electric push rod; 503. Conveying pipe; 504. Piston disc; 505. Mounting plate; 506. Limiting disc; 507. Connecting rod; 508. Sealing disc; 509. Conical spring; 510. Fixing disc. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0030] Please see Figure 1-4 This embodiment provides a pH-adaptive polyaluminum chloride preparation device for high alkalinity wastewater, including a protective tank 100, an inner tank 104 fixedly installed inside the protective tank 100, a feed pipe 101 fixedly installed on the top of the protective tank 100, the inner cavity of the feed pipe 101 being connected to the inner cavity of the inner tank 104, a stirring assembly for stirring the material inside the inner tank 104 being provided on the top of the protective tank 100, a monitoring assembly for monitoring the acid-base value of the material inside the inner tank 104 being provided on the top of the protective tank 100, a heating assembly for heating the inner tank 104 being provided between the protective tank 100 and the inner tank 104, a discharge pipe 103 fixedly connected to the bottom of the protective tank 100, the inner cavity of the discharge pipe 103 being connected to the inner cavity of the inner tank 104, and a valve 102 connected to the output end of the discharge pipe 103;

[0031] The monitoring component includes a controller 200 fixedly installed on the upper surface of one side of the protective tank 100. An acid-base sensor 202 is fixedly installed on the top of the protective tank 100. The sensor's acquisition end extends downwards through the protective tank 100 and into the inner cavity of the inner tank 104. The signal output of the sensor 202 is electrically connected to the signal input of the controller 200 via a wire. A storage mechanism for storing acidic and alkaline solutions is fixedly installed on the upper surface of the other side of the protective tank 100. A pushing component for pushing solutions into the inner tank 104 is provided on the lower part of the other side of the protective tank 100. The pushing component is connected to the storage mechanism via a connecting piece. The controller 200 can control the pushing component to operate based on the values ​​fed back by the acid-base sensor. Through the configuration of the monitoring component, stirring component, and heating component, the acid-base sensor 202 collects data in real time. The pH value of the material in inner tank 104 is fed back to controller 200. Once the pH value of the material deviates from the set range, controller 200 can quickly control the push component to select acidic or alkaline solution from the storage mechanism and inject it into inner tank 104. This timely adjustment of the acid-base environment of the material effectively avoids interference from the alkalinity fluctuations of high-alkalinity wastewater with the hydrolysis and polymerization reaction of polyaluminum chloride, ensuring that the reaction takes place at a suitable pH level. This guarantees the stability of the product's basicity and improves the product's flocculation performance. At the same time, the stirring component can make the material more uniformly mixed, ensuring that the data collected by the pH sensor 202 is more representative. It also allows the adjusted acid-base solution to react fully with the material. In addition, the heating component provides a suitable temperature environment for the material reaction. Together with the monitoring and adjustment functions, it ensures the smooth progress of the polyaluminum chloride reaction from multiple aspects. Compared with single-function equipment, it can better deal with the problem of pH fluctuations of the material.

[0032] The controller 200 can be selected as a DSP controller 200, and its specific model can be, but is not limited to, TMS320F2812. The acid-base sensor 202 can be, but is not limited to, one of Mettler Toledo InPro3250i, Thermo Scientific Orion 3Star, and E+HCPS11D-7BA21. Meanwhile, how the acid-base sensor 202 is connected to the controller 200 via wires and communicates is a well-known technical means for those skilled in the art, and will not be described in detail here.

[0033] The storage mechanism includes a support frame 400 fixedly installed on the upper surface of the other side of the protective tank 100. Two sets of storage boxes 401 are placed on the surface of the support frame 400. The two sets of storage boxes 401 contain acidic solutions and alkaline solutions respectively. Through the setting of the storage mechanism, the two sets of storage boxes 401 store acidic and alkaline solutions respectively, providing sufficient and clearly classified solution reserves for adjusting the acid and alkalinity of the material. When the controller 200 determines that the acid and alkalinity needs to be adjusted, it can quickly and accurately obtain the solution from the corresponding storage box 401, avoiding adjustment errors caused by solution confusion, ensuring that the acid and alkalinity of the material can be adjusted in a timely and effective manner, and maintaining the stable progress of the polyaluminum chloride reaction.

[0034] The pushing component includes a conveying pipe 503 fixedly installed on the lower surface of the other side of the protective tank 100. One end of the conveying pipe 503 extends inward and communicates with the inner cavity of the inner tank 104. One end of the conveying pipe 503 is provided with an anti-backflow component to prevent material inside the inner tank 104 from flowing back into the conveying pipe 503. The other end of the conveying pipe 503 is connected to a piston cylinder 500. A piston disc 504 is slidably connected to the inner cavity of the piston cylinder 500. A fixing plate 501 is fixedly connected to the opening of the piston cylinder 500. An electric push rod 502 is fixedly installed on the surface of the fixing plate 501. The telescopic end of the electric push rod 502 passes through the fixing plate. 501 is fixedly connected to the surface of piston disc 504. The signal input end of electric push rod 502 is electrically connected to the signal output end of controller 200 through wires. Through the setting of the pushing component, electric push rod 502 drives piston disc 504 to move inside piston cylinder 500, which can accurately control the amount of acid and alkali solution pushed to inner tank 104. According to the value fed back by acid and alkali sensor 202, controller 200 can accurately calculate the required amount of solution and realize quantitative pushing through electric push rod 502, avoiding adding too much or too little solution, ensuring that the acid and alkali value of the material is accurately adjusted to the appropriate range, stabilizing the reaction process of polyaluminum chloride, and improving product quality.

[0035] The electric actuator 502 is equipped with an absolute encoder, the specific model of which can be, but is not limited to, the German P+F Pepperl+Fuchs AVM58N-011AAR0GN-1212. Meanwhile, how the controller 200 is wired to the electric actuator 502 is a well-known technical method for those skilled in the art, and will not be described in detail here.

[0036] The connecting component includes a three-way pipe 402 connected to the end of the piston cylinder 500. The two output ends of the three-way pipe 402 are respectively connected to solenoid valves 404. The output ends of the two solenoid valves 404 are respectively connected to connecting pipes 403. The other ends of the two connecting pipes 403 are respectively connected to the inner cavity of the corresponding storage tank 401. The input ends of the two solenoid valves 404 are electrically connected to the signal output end of the controller 200 through wires and are both controlled by the controller 200. Through the setting of the connecting component, the two solenoid valves 404 correspond to the connecting pipes 403 of acidic and alkaline solutions respectively. The controller 200 intelligently controls the opening and closing of the solenoid valves 404 according to the acid and alkalinity of the material, accurately selects the required solution to be delivered to the inner tank 104, realizes automated and directional acid and alkalinity adjustment, requires no manual intervention, quickly responds to changes in the acid and alkalinity of the material, adjusts the reaction environment in a timely manner, and effectively solves the problems caused by alkalinity fluctuations in high alkalinity wastewater.

[0037] Among them, the specific model of solenoid valve 404 can be Baode 6014 series.

[0038] The anti-backflow component includes an installation plate 505 fixedly installed inside one end of the conveying pipe 503. A sealing disc 508 is sealed and inserted into the opening of the conveying pipe 503. A connecting rod 507 is fixedly connected to one end of the sealing disc 508. The end of the connecting rod 507 passes through the installation plate 505 and is fixedly connected to a fixing disc 510. A conical spring 509 is sleeved on the surface of the connecting rod 507 between the fixing disc 510 and the installation plate 505. A limiting disc 506 is fixedly sleeved on the surface of the connecting rod 507 between the sealing disc 508 and the fixing plate 501. By setting up the anti-backflow component, during the solution pushing process, it can ensure that the solution flows smoothly into the inner tank 104, and can quickly prevent the material backflow when pushing stops, maintaining the stability of the solution flow direction in the conveying pipe 503, ensuring that the acid-base value adjustment process is not disturbed by the material backflow, so that each adjustment operation can be completed as expected, ensuring the stability of the polyaluminum chloride reaction environment, and thus stabilizing the product performance.

[0039] The heating assembly includes a heat-conducting layer 204 disposed between the inner tank 104 and the protective tank 100. An electric heating tube 201 is disposed between the inner tank 104 and the protective tank 100 and is controlled by a controller 200. A temperature sensor 203 is fixedly installed at the bottom of the protective tank 100. The detection end of the temperature sensor 203 extends upward between the inner tank 104 and the protective tank 100 to monitor the temperature of the heat-conducting layer 204. The signal output end of the temperature sensor 203 is electrically connected to the signal input end of the controller 200 through a wire. Through the setting of the electric heating tube 201, the electric heating tube 201 and the heat-conducting layer 204 heat the material in the inner tank 104. The temperature sensor 203 monitors and feeds back the temperature data to the controller 200 in real time to ensure that the material is at the optimal temperature for the polyaluminum chloride reaction. The appropriate temperature and the precise adjustment of pH work together to create excellent conditions for the hydrolysis polymerization reaction, reduce the impact of unstable temperature and pH on the reaction, ensure the stability of the product's basicity, and improve the product's flocculation performance.

[0040] Among them, the heat-conducting layer 204 is either pure water or heat-conducting oil.

[0041] Among them, the temperature sensor 203 is PT100. Meanwhile, how the controller 200 interacts with the temperature sensor 203 and the electric heating tube 201, and how it controls the electric heating tube 201, are well-known technical means to those skilled in the art, and will not be described in detail here.

[0042] The stirring assembly includes a drive motor 300 fixedly installed on the top of the protective tank 100. The output end of the drive motor 300 is keyed to a transmission rod 301. The end of the transmission rod 301 rotates downward, passes through the protective tank 100, and extends into the interior of the inner tank 104. The end of the transmission rod 301 located inside the inner tank 104 is fixedly connected to a stirring plate 302. Through the setting of the stirring plate 302, continuous stirring is carried out during the process of adjusting the acidity and alkalinity of the material and heating, so that the acid and alkaline solutions are fully mixed with the materials, the temperature distribution is more uniform, and the incomplete or uneven reaction caused by local acidity and alkalinity and temperature differences is avoided. The uniform reaction environment helps to improve the reaction effect of polyaluminum chloride, stabilize product quality, and make up for the reaction instability problem caused by the inability to monitor and adjust the acidity and alkalinity of the original equipment.

[0043] Working principle;

[0044] First, the acidic and alkaline solutions are poured into their respective storage tanks 401. Then, high-alkalinity wastewater is added into the inner tank 104 through the feed pipe 101. At the same time, the temperature sensor 203 is activated, which monitors the temperature of the heat-conducting layer 204 in real time and feeds the signal back to the controller 200. If the temperature is lower than the set value, the controller 200 will activate the electric heating tube 201 to heat the inner tank 104 to keep the material in a suitable temperature environment. Then, the material to be processed is added into the tank.

[0045] At this time, the drive motor 300 is turned on. The drive motor 300 drives the stirring plate 302 to rotate in the inner tank 104 through the transmission rod 301, stirring the material and making the material evenly mixed, which helps with subsequent acid and alkali value monitoring and adjustment as well as heating uniformity.

[0046] Meanwhile, the pH sensor 202 collects the pH information of the material in the inner tank 104 in real time and transmits the signal to the controller 200. When the value fed back by the pH sensor 202 deviates from the set range, the controller 200 controls the solenoid valve 404 and the electric push rod 502 according to the specific situation. When the material is too acidic, the controller 200 will open the solenoid valve 404 connected to the alkaline solution storage tank 401 and start the electric push rod 502 to push the piston disc 504 to move in the piston cylinder 500, pushing the alkaline solution into the inner tank 104 through the delivery pipe 503 to neutralize the acidity. Conversely, if the material is too alkaline, the solenoid valve 404 connected to the acidic solution storage tank 401 will be opened to push the acidic solution for neutralization.

[0047] During the solution delivery process, the conical spring 509 in the anti-backflow assembly ensures that the sealing disc 508 fits tightly against the opening of the delivery pipe 503, preventing material in the inner tank 104 from flowing back into the delivery pipe 503. When solution is being delivered, the pressure of the solution overcomes the elastic force of the conical spring 509, causing the sealing disc 508 to open and the solution to enter the inner tank 104.

[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pH-adaptive polyaluminum chloride preparation device for high-alkalinity wastewater, characterized in that, The device includes a protective tank (100), an inner tank (104) fixedly installed inside the protective tank (100), a feed pipe (101) fixedly installed on the top of the protective tank (100), the inner cavity of the feed pipe (101) being connected to the inner cavity of the inner tank (104), a stirring assembly for stirring the material inside the inner tank (104) being provided on the top of the protective tank (100), a monitoring assembly for monitoring the acid-base value of the material inside the inner tank (104) being provided on the top of the protective tank (100), and a heating assembly for heating the inner tank (104) being provided between the protective tank (100) and the inner tank (104).

2. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 1, characterized in that: The monitoring component includes a controller (200) fixedly installed on the upper surface of one side of the protective tank (100). An acid-base sensor (202) is fixedly installed on the top of the protective tank (100). The acquisition end of the acid-base sensor (202) penetrates downward through the protective tank (100) and extends into the inner cavity of the inner tank (104). The signal output end of the acid-base sensor (202) is electrically connected to the signal input end of the controller (200) through a wire. A storage mechanism for storing acidic and alkaline solutions is fixedly installed on the upper surface of the other side of the protective tank (100). A pushing component for pushing the solution into the inner tank (104) is provided on the lower part of the other side of the protective tank (100). The pushing component is connected to the storage mechanism through a connecting piece. The controller (200) can control the pushing component to operate according to the value fed back by the acid-base sensor.

3. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 2, characterized in that: The storage mechanism includes a support frame (400) fixedly installed on the upper surface of the other side of the protective tank (100). Two sets of storage boxes (401) are placed on the surface of the support frame (400), and the two sets of storage boxes (401) respectively contain an acidic solution and an alkaline solution.

4. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 3, characterized in that: The pushing component includes a conveying pipe (503) fixedly installed on the lower surface of the other side of the protective tank (100). One end of the conveying pipe (503) extends inward and communicates with the inner cavity of the inner tank (104). One end of the conveying pipe (503) is provided with an anti-backflow component to prevent the material inside the inner tank (104) from flowing back into the conveying pipe (503). The other end of the conveying pipe (503) is connected to a piston cylinder (500). The inner cavity of the piston cylinder (500) is sealed and slidably connected to a piston disc (504). The opening of the piston cylinder (500) is fixedly connected to a fixing plate (501). An electric push rod (502) is fixedly installed on the surface of the fixing plate (501). The telescopic end of the electric push rod (502) passes through the fixing plate (501) and is fixedly connected to the surface of the piston disc (504). The signal input end of the electric push rod (502) is electrically connected to the signal output end of the controller (200) through a wire.

5. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 4, characterized in that: The connecting component includes a three-way pipe (402) connected to the end of the piston cylinder (500). The two output ends of the three-way pipe (402) are respectively connected to solenoid valves (404). The output ends of the two sets of solenoid valves (404) are respectively connected to connecting pipes (403). The other ends of the two sets of connecting pipes (403) are respectively connected to the inner cavity of the corresponding side storage box (401). The input ends of the two sets of solenoid valves (404) are respectively electrically connected to the signal output end of the controller (200) through wires and are both controlled by the controller (200).

6. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 5, characterized in that: The anti-backflow assembly includes a mounting plate (505) fixedly installed inside one end of the conveying pipe (503). A sealing disc (508) is sealed and inserted into the opening of the conveying pipe (503). A connecting rod (507) is fixedly connected to one end of the sealing disc (508). The end of the connecting rod (507) passes through the mounting plate (505) and is fixedly connected to a fixing disc (510). A conical spring (509) is sleeved on the surface of the connecting rod (507) between the fixing disc (510) and the mounting plate (505). A limiting disc (506) is fixedly sleeved on the surface of the connecting rod (507) between the sealing disc (508) and the fixing plate (501).

7. The pH-adaptive polyaluminum chloride preparation equipment for high-alkalinity wastewater according to claim 6, characterized in that: The heating assembly includes a heat-conducting layer (204) disposed between the inner tank (104) and the protective tank (100). An electric heating tube (201) is provided between the inner tank (104) and the protective tank (100). The electric heating tube (201) is controlled by a controller (200). A temperature sensor (203) is fixedly installed at the bottom of the protective tank (100). The detection end of the temperature sensor (203) extends upward to the space between the inner tank (104) and the protective tank (100) to monitor the temperature of the heat-conducting layer (204). The signal output end of the temperature sensor (203) is electrically connected to the signal input end of the controller (200) through a wire.

8. A pH-adaptive polyaluminum chloride preparation device for high-alkalinity wastewater according to any one of claims 1-7, characterized in that: The stirring assembly includes a drive motor (300) fixedly installed on the top of the protective tank (100). The output end of the drive motor (300) is keyed to a transmission rod (301). The end of the transmission rod (301) rotates downward through the protective tank (100) and extends into the interior of the inner tank (104). The end of the transmission rod (301) located inside the inner tank (104) is fixedly connected to a stirring plate (302).

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