An automatic water quality filtering control device based on a single-chip microcomputer

Abstract

The utility model discloses a water quality automatic filtration control device based on singlechip, including filter drum and vertical setting in the filter drum inner chamber middle part for the raw water filtration purification cylinder, and the purification cylinder inner chamber below is sand filter layer, the upper side of purification cylinder inner chamber is provided with filter hole no.

Description

Technical Field

[0001] This utility model belongs to the field of water filtration technology, and in particular relates to an automatic water filtration control device based on a single-chip microcomputer. Background Technology

[0002] In the field of water filtration, filtration devices using quartz sand filter layers are widely used in raw water purification because they can trap suspended solids, colloids, and other impurities in the water through the pores of the filter layer. However, with long-term use, the quartz sand filter layer of these devices will gradually become clogged by the trapped impurities, leading to increased water flow resistance, decreased filtration efficiency, and even affecting the quality of the effluent.

[0003] In existing technologies, such devices lack a backwashing mechanism that can be integrated into their own structure. When faced with filter layer clogging, it is often necessary to manually disassemble the device, remove the filter layer for cleaning or replacement. This is not only cumbersome and time-consuming, but also forces the filtration process to be interrupted, making it impossible to meet the continuous and efficient water filtration requirements and difficult to adapt to automated operation scenarios. Utility Model Content

[0004] The purpose of this utility model is to provide a microcontroller-based automatic water filtration control device to solve the problem mentioned in the background art that water filtration devices using quartz sand filter layers lack an automated backwashing mechanism that can be integrated into their own structure, which in turn easily leads to cumbersome manual disassembly and cleaning of the filter layer, interruption of the filtration process, and inability to meet the technical problems of continuous and efficient water filtration.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A microcontroller-based automatic water filtration control device includes a filter cylinder and a purification cylinder vertically arranged in the middle of the filter cylinder's inner cavity for filtering raw water. The lower part of the purification cylinder's inner cavity is a sand filter layer. A filter hole is provided through the upper part of the purification cylinder's inner cavity for the raw water to be filtered to enter and for backwash water to exit. A water pump is provided on one side of the filter cylinder, and the input end of the water pump is connected to a suction pipe. A backwashing assembly is provided on the left side of the filter cylinder, wherein the backwashing assembly includes a second water pump for providing power. The output end of the second water pump is connected to a second pump pipe, and the second pump pipe is interconnected with the suction pipe.

[0006] Preferably, a purification cylinder is provided on the left side of the filter cylinder for storing the purified raw water. The top of the purification cylinder is connected to a water quality testing chamber two via a bracket. A water quality testing group two is installed on the surface of the water quality testing chamber two for testing the raw water that has been filtered and enters the water quality testing chamber two.

[0007] Preferably, the left side of the filter cartridge is connected to a water quality testing chamber, and a water quality testing unit is installed inside the water quality testing chamber.

[0008] Preferably, a filter tube is vertically installed inside the purification cylinder, the top of the filter tube penetrates the sand filter layer and extends to the top of the inner cavity of the purification cylinder, and a second filter hole is opened on the surface of the filter tube and inside the sand filter layer.

[0009] Preferably, a ring plate cleaning component is slidably sleeved on the surface of the purification cylinder, and a spiral groove is formed on the surface of the purification cylinder. A ball bearing is movably embedded on the surface of the ring plate cleaning component, and one end of the ball bearing extends into the inner cavity of the spiral groove.

[0010] Preferably, the outer surface of the ring plate cleaning component is fitted with a floating ring, which can float in the water inside the filter cylinder. The outer surface of the floating ring is connected to a connecting plate, and the outer surface of the connecting plate is fitted with a cleaning brush.

[0011] Preferably, a pull rope is connected to the top of the ring plate cleaning component, and a guide tube is installed through the top of the surface of the purification cylinder. The other end of the pull rope passes through the guide tube and extends into the inner cavity of the purification cylinder, while a limit buckle is connected to the surface of the pull rope and located on the outside of the purification cylinder.

[0012] Preferably, a magnetic ring is fitted onto the top of the cleaning brush surface, and an electromagnet is embedded in the top of the filter cartridge cavity.

[0013] Preferably, the end of the pull rope away from the ring plate cleaning component is connected to a connecting ring plate, and a scraper is sleeved on the outer side of the connecting ring plate, wherein the scraper is used to clean the inner wall of the purification cylinder.

[0014] Preferably, a microcontroller is installed at the front end of the filter cartridge surface, and an alarm is installed at the top of the filter cartridge end.

[0015] The automatic water filtration control device based on a single-chip microcomputer of this invention has the following advantages: This microcontroller-based automatic water filtration control device works by injecting raw water into the filter cartridge through the inlet pipe. The raw water flows into water quality testing chamber one, where water quality testing group one detects the water quality and transmits the signal to the microcontroller controller. The raw water then enters the inner cavity of the purification cartridge through filter holes one, and is filtered through multiple layers of quartz sand with particle sizes decreasing. The purified water enters the pipe through filter holes two and is transported to water pump one by the suction pipe. When it passes through water quality testing chamber two, water quality testing group two detects the water quality. Qualified water is pumped into the purification cartridge for storage by water pump one, while unqualified water is returned to the filter cartridge for reflux filtration through the return pipe. The microcontroller controller can also control the injection of purification solution into the filter cartridge through the solenoid valve and flow sensor of the dosing pipe.

[0016] This microcontroller-based automatic water filtration control device, during backwashing, activates pump two, which sends purified water from the purification cylinder through pump pipe one and pump pipe two into the suction pipe. The water then backwashes the sand filter layer through filter pipe hole two, while wastewater enters the filter cylinder through filter hole one and is discharged from the drain pipe. When raw water is injected, the water level in the filter cylinder rises, causing the floating ring, ring plate cleaning component, and cleaning brush to move upwards, cleaning the outer wall of the purification cylinder and the inner wall of the filter cylinder respectively. The scraper moves downwards with the pull rope to clean the inner wall of the purification cylinder. After the distance sensor at the top of the filter cylinder detects that the magnetic ring is in place, the microcontroller controller controls the electromagnet to engage and limit the movement. The solenoid valves of the inlet pipe, drain pipe, and other pipelines, as well as pumps one and two, are all controlled by the microcontroller controller, realizing automated filtration and backwashing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is one of the three-dimensional structural schematic diagrams of the present utility model; Figure 2 This is the second three-dimensional schematic diagram of the overall structure of this utility model; Figure 3 This is a top view of the overall structure of this utility model; Figure 4 For the present utility model Figure 3 Schematic diagram of the AA section structure along the middle; Figure 5 This is a three-dimensional cross-sectional view of the filter cartridge structure of this utility model; Figure 6 This is a three-dimensional schematic diagram of the filter cartridge structure of this utility model; Figure 7 This is a schematic diagram of the assembly of the cleaning brush, floating ring, pull rope, and scraper of this utility model; Figure 8 This is a schematic diagram of the assembly of the pull rope, scraper, and connecting ring plate of this utility model; Figure 9 This is a cross-sectional view of the cleaning brush structure of this utility model; Figure 10 This is a system principle block diagram of this utility model.

[0019] Explanation of markings in the diagram: 100, Filter cartridge; 110, Inlet pipe; 120, Drain pipe; 130, Water quality testing chamber one; 140, Water quality testing group one; 150, Filter tube; 200, Purification cartridge; 210, Water pump one; 220, Suction pipe; 230, Auxiliary pipe; 300, Water pump two; 301, Pump pipe one; 302, Pump pipe two; 400, Water quality testing chamber two; 410, Water quality testing group two; 500, Purification cartridge; 51 0. Filter hole one; 520. Water quality testing group three; 530. Electromagnet; 540. Spiral groove; 600. Ring plate cleaning component; 610. Ball bearing; 620. Float ring; 630. Connecting plate; 640. Cleaning brush; 650. Magnetic ring; 700. Pull rope; 701. Guide tube; 702. Limit buckle; 710. Scraper; 720. Connecting ring plate; 721. Annular sliding plate; 800. Alarm; 900. Microcontroller controller. Detailed Implementation

[0020] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0021] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0024] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0025] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an automatic water filtration control device based on a single-chip microcomputer.

[0026] This device is also suitable for factory circulating water purification scenarios, such as machining and electronics factory cooling circulating water, and can meet the daily circulating water demand of 10-15m³ for a single production line.

[0027] like Figures 1-10 As shown, the present invention provides an automatic water filtration control device based on a single-chip microcomputer, including a filter cylinder 100 and a purification cylinder 500 vertically arranged in the middle of the inner cavity of the filter cylinder 100 for filtering raw water. The upper end of the purification cylinder 500 is fastened to the top wall of the inner cavity of the filter cylinder 100 by bolts. The filter cartridge 100 is installed next to the factory's circulating water return pipe, and the inlet pipe 110 is connected to the return pipe. If the raw water contains metal debris, its inner filter disc is upgraded to a 0.5mm pore size stainless steel filter screen to intercept metal debris with a diameter >0.5mm, reducing the burden on the purification cartridge 500. The water quality detection group 140 can be equipped with an oil sensor. When the oil content exceeds 5mg / L, the single-chip microcomputer controller 900 controls the dosing pipe to inject oil removal agent, with a single dosing volume of 100-150mL, and simultaneously adjusts the pH to 7.0-8.0.

[0028] like Figure 4As shown, the left side of the filter cartridge 100 is connected to a water quality testing chamber 130, and a water quality testing group 140 is installed inside the water quality testing chamber 130. The water quality testing group 140 is bidirectionally connected to the microcontroller controller 900. When raw water enters the filter cartridge 100, the liquid will flow into the water quality testing chamber 130. The water quality testing group 140 can assist in the detection of the liquid entering the water quality testing chamber 130.

[0029] Specifically, the bottom of the inner cavity of the water quality testing chamber 130 is beveled. This beveled design guides the liquid in the water quality testing chamber 130 as it is discharged from the filter cartridge 100, thus directing the liquid into the filter cartridge 100. Specifically, the bottom of the inner wall of the filter cylinder 100 is connected to an inlet pipe 110, and the bottom of the inner cavity of the filter cylinder 100 is connected to a drain pipe 120, which is used to discharge the wastewater and impurities after backwashing. Solenoid valves are installed on the surfaces of both the drain pipe 120 and the inlet pipe 110 to control the opening and closing of the inner cavities of the inlet pipe 110 and the drain pipe 120. The input end of the solenoid valve is electrically connected to the output end of the microcontroller 900. A filter tube 150 is vertically installed inside the purification cylinder 500. The bottom of the filter tube 150 is connected to the input end of the water suction pipe 220. The top of the filter tube 150 penetrates the sand filter layer and extends to the top of the inner cavity of the purification cylinder 500. A plug is threaded to the top of the purification cylinder 500. A filter hole 2 is opened through the surface of the filter tube 150 and inside the sand filter layer. After being filtered by the sand filter layer in the purification cylinder 500, the pure raw water can enter the filter tube 150 through the filter hole 2 and finally be sent out through the water suction pipe 220.

[0030] Similarly, during backwashing, the water enters the purification cylinder 500 through the filter hole 2 via the pump pipe 301, the water pump 300, the pump pipe 302, the suction pipe 220, and the filter pipe 150, and then backwashes the sand filter layer. The backwashed liquid flows into the filter cylinder 100 through the filter hole 510 and is finally discharged through the drain pipe 120.

[0031] In practical use, the second filter hole can also be distributed at the bottom of the surface of the filter tube 150 and located at the bottom of the sand filter layer.

[0032] The inner cavity of the 500 purification cylinder contains a sand filter layer, which is made of quartz sand. Quartz sand is a naturally formed irregular granular material that can form uniform pores after being piled up. This ensures that water can pass through while effectively trapping suspended solids, colloids and other impurities in the water.

[0033] Specifically, the sand filter layer is a multi-layer sand filter layer, which is laid in layers according to the particle size from large to small. For example, the bottom layer is 1-2mm quartz sand and the top layer is 0.5-1mm quartz sand, forming a gradient filtration and improving the interception efficiency.

[0034] Specifically, the top of the filter cartridge 100 is connected to a dosing pipe. A solenoid valve and a flow sensor are installed on the surface of the dosing pipe. Through the cooperation of the solenoid valve and the flow sensor with the dosing pipe, the purified medicine can be controlled to be delivered into the filter cartridge 100. The output end of the solenoid valve on the surface of the dosing pipe is electrically connected to the input end of the microcontroller 900, while the flow sensor is bidirectionally electrically connected to the microcontroller 900.

[0035] The input end of the dosing tube is connected to the output end of the dosing chamber of the external device.

[0036] In practical use, such as Figures 4 to 6 As shown, a filter disc can be installed at the bottom of the inner cavity of the filter cartridge 100. The filter disc can assist in filtering large particulate impurities that enter the filter cartridge 100 through the liquid inlet pipe 110.

[0037] A filter hole 510 is provided through the upper part of the inner cavity of the purification cylinder 500 for the raw water to be filtered to enter and the backwash water to be discharged. Figures 1 to 4 As shown, a water pump 210 is provided on one side of the filter cartridge 100. The water pump 210 is installed at the top of the purification cartridge 200. The input end of the water pump 210 is connected to a suction pipe 220, which extends into the inner cavity of the filter cartridge 100 for conveying the filtered raw water outward. A purification cartridge 200 is provided on the left side of the filter cartridge 100 for storing the purified raw water. The output end of the water pump 210 extends into the inner cavity of the purification cartridge 200 for pumping the purified raw water into the purification cartridge 200 for storage. The input end of the second water pump 300 is connected to an interconnected pump... Pipe 301 extends to the bottom of the inner cavity of the purification cylinder 200, and can pump the filtered raw water in the purification cylinder 200 to the filter cylinder 100 through water pump 300 to backwash its internal structure. The top of the purification cylinder 200 is connected to the water quality testing chamber 400 through a bracket. The output end of the water quality testing chamber 400 is connected to the surface of the suction pipe 220 through pipes. The surface of the water quality testing chamber 400 is equipped with a water quality testing group 410, which is used to test the filtered raw water that enters the water quality testing chamber 400. The output pipe of water quality testing chamber 2 400 is also connected to a return pipe. The output end of the return pipe is connected to the top of the inner cavity of filter cylinder 100. After the raw water is filtered by filter cylinder 100 and purification cylinder 500, the filtered raw water enters water quality testing chamber 2 400 and is tested by water quality testing group 2 410. Raw water that passes the test flows back into suction pipe 220 through the output pipe of water quality testing group 2 410, and finally flows into purification cylinder 200 through water pump 1 210. Raw water that fails the test by water quality testing group 2 410 is returned to filter cylinder 100 through the return pipe for further filtration.

[0038] Specifically, the water quality testing unit 2410 and the microcontroller controller 900 are bidirectionally electrically connected.

[0039] like Figure 5 As shown, a water quality detection module 3 520 is embedded in the inner cavity of the purification cylinder 500. The water quality detection module 3 520 is bidirectionally electrically connected to the microcontroller 900 and is used to assist in the detection of the raw water entering the purification cylinder 500.

[0040] Water quality testing group 2 410, water quality testing group 1 140, and water quality testing group 3 520 include at least one detection sensor, which is selected from one or more of turbidity sensor, pH sensor, and residual chlorine sensor; the output terminal of each detection sensor is electrically connected to the corresponding signal input terminal of the microcontroller controller 900 control module for synchronously collecting multiple water quality parameters.

[0041] Specifically, a backwashing assembly is provided on the left side of the filter cartridge 100. This backwashing assembly includes a second water pump 300, which is located on the left side of the filter cartridge 100 and at the bottom of the purification cartridge 200. The output end of the second water pump 300 is connected to a second pump pipe 302, which is connected to a suction pipe 220. Thus, with the combined action of the second water pump 300 and the second pump pipe 302, the purified water in the purification cartridge 200 can be reversed and discharged into the filter cartridge 100 to rinse the inside of the filter cartridge 100.

[0042] Specifically, the surface of pump tube 202 is connected to an auxiliary tube 230, which extends to the upper end of the inner cavity of filter cylinder 100. The output port of the auxiliary tube 230 is inclined toward the inner wall of filter cylinder 100. The auxiliary tube 230 can draw pure water from the pure cylinder 200 into the filter cylinder 100 to rinse the inner wall of the filter cylinder 100.

[0043] A ring plate cleaning component 600 is slidably mounted on the surface of the purification cylinder 500. The ring plate cleaning component 600 can clean the outer wall of the purification cylinder 500. A spiral groove 540 is opened on the surface of the purification cylinder 500. A ball bearing 610 is movably embedded in the surface of the ring plate cleaning component 600. One end of the ball bearing 610 extends into the inner cavity of the spiral groove 540. The ball bearing 610 can slide along the spiral groove 540.

[0044] A floating ring 620 is fitted on the outer surface of the ring plate cleaning component 600. The floating ring 620 can float in the water inside the filter cylinder 100. Affected by the water level inside the filter cylinder 100, the floating ring 620 can change the position of the ring plate cleaning component 600 and the connecting plate 630. The outer surface of the floating ring 620 is connected to the connecting plate 630, and the outer surface of the connecting plate 630 is fitted with a cleaning brush 640. The cleaning brush 640 can clean the inner wall of the filter cylinder 100.

[0045] like Figures 6 to 8 As shown, a pull rope 700 is connected to the top of the ring plate cleaning component 600, and a guide tube 701 is installed through the top of the surface of the purification cylinder 500. The other end of the pull rope 700 passes through the guide tube 701 and extends into the inner cavity of the purification cylinder 500. A limit buckle 702 is connected to the surface of the pull rope 700 and located on the outside of the purification cylinder 500. The limit buckle 702 works with the guide tube 701 to limit the pull rope 700. A magnetic ring 650 is fitted onto the top of the surface of the cleaning brush 640, while an electromagnet 530 is embedded in the top of the inner cavity of the filter cartridge 100. When the magnetic ring 650 is on the side of the electromagnet 530, the electromagnet 530 is energized and can attract the magnetic ring 650, thereby limiting the structure such as the cleaning brush 640, the floating ring 620, and the ring plate cleaning component 600.

[0046] Specifically, the input terminal of the electromagnet 530 is electrically connected to the output terminal of the microcontroller 900, and the microcontroller 900 can control the purification cylinder 500 to open or close.

[0047] The end of the pull rope 700 away from the ring plate cleaning component 600 is connected to a connecting ring plate 720, and a scraper 710 is sleeved on the outside of the connecting ring plate 720. The scraper 710 is used to clean the inner wall of the purification cylinder 500. The surface of the connecting ring plate 720 is fitted with an annular sliding plate 721, and the inner surface of the scraper 710 is provided with a spiral groove. The annular sliding plate 721 extends into the spiral groove and slides in connection with its surface.

[0048] In practical use, raw water to be filtered is injected into the filter cylinder 100 through the inlet pipe 110. After the raw water enters the filter cylinder 100, as the water level gradually rises, it can drive the floating ring 620 to move upward, which in turn drives the cleaning brush 640 and the ring plate cleaning component 600 to move upward, cleaning the outer wall of the purification cylinder 500 and the inner wall of the filter cylinder 100. At the same time, when the ring plate cleaning component 600 moves upward, it is suspended from the base point in the guide pipe 701 and subjected to... Under the influence of gravity, the scraper 710 pulls the rope 700 downward to clean the inner wall of the purification cylinder 500 until the limit buckle 702 abuts against a section of the guide tube 701, preventing the scraper 710 from moving further downward. At this time, the magnetic ring 650 is in contact with the electromagnet 530. The microcontroller 900 can then control the electromagnet 530 to open and attract the magnetic ring 650, limiting the cleaning brush 640 and other structures so that they are positioned above the inner cavity of the filter cylinder 100.

[0049] In order for the microcontroller controller 900 to automatically turn on the electromagnet 530, a distance sensor is installed on the top of the inner cavity of the filter cartridge 100. The distance sensor is bidirectionally electrically connected to the microcontroller controller 900. In actual use, the distance sensor threshold is set by the microcontroller controller 900. When the magnetic ring 650 moves to the electromagnet 530 and the distance sensor detects the corresponding value, the signal can be transmitted to the microcontroller controller 900 to control the electromagnet 530 to turn on.

[0050] A microcontroller 900 is installed at the front end of the filter cartridge 100. An alarm 800 is installed at the top of the end of the filter cartridge 100. The alarm 800 is used for alarm activation. The input of the alarm 800 is electrically connected to the output of the microcontroller 900. When the sensor detects an abnormality in the water filtration process, the alarm 800 can be activated to sound an alarm. The alarm 800 is a three-color alarm light, which can use red, green, and yellow.

[0051] In this scheme, solenoid valves are installed on the surfaces of the inlet pipe 110, outlet pipe 120, suction pipe 220, auxiliary pipe 230, pump pipe 1 301, pump pipe 2 302, return pipe, and other pipes. The output end of the solenoid valve is electrically connected to the output end of the microcontroller 900.

[0052] Specifically, such as Figure 10 As shown, the microcontroller 900 is bidirectionally electrically connected to water quality detection group 2 410, water quality detection group 140 and water quality detection group 3 520 respectively, and the output terminal of the microcontroller 900 is electrically connected to the input terminal of electromagnet 530, alarm 800, water pump 1 210 and water pump 2 300 respectively.

[0053] The single-chip microcontroller 900 is the core hub of this automatic water filtration control device. Its model is STM32F103. It receives detection signals from water quality detection group 140, water quality detection group 2 410, water quality detection group 3 520 and distance sensor through bidirectional electrical connection. After processing, it outputs instructions according to preset logic to control the start and stop of water pump 1 210 and water pump 2 300, the opening and closing of solenoid valves in pipelines such as inlet pipe 110 and outlet pipe 120, the on / off state of electromagnet 530, and the alarm 800. It can also link the solenoid valve and flow sensor of the dosing pipe to adjust the dosing amount, realize the automatic filtration, backwashing and abnormal early warning of the device. In essence, it is a control unit that integrates signal receiving, processing and instruction sending functions to ensure the automated operation of the entire device.

[0054] Backwashing is adapted to the high-frequency water demand of industry. The microcontroller controller 900 is preset to start once every 8 hours to avoid the peak water consumption of the production line. The output pressure of water pump 2 300 is set to 0.5MPa to adapt to industrial power supply. Pump pipe 1 301 and pump pipe 2 302 are made of high-pressure resistant PVC pipe to avoid rupture due to excessive water pressure. A high-pressure nozzle is added to the output port of auxiliary pipe 230 to wash away residual oil and metal dust on the inner wall of filter cartridge 100. The wastewater is connected to the factory wastewater pretreatment system through drain pipe 120.

[0055] The 200-cell purification tank has a capacity of 5m³, sufficient to supply circulating water to the production line for one hour. The second 400 water quality testing chamber has a newly added conductivity sensor (410 in the second water quality testing group). Industrial circulating water conductivity must be controlled below 500μS / cm; exceeding this limit triggers a return flow and re-filtration. The 800 alarm is connected to the factory's DCS system; in case of an anomaly, in addition to a local alarm, a signal is simultaneously sent to the central control room. All pipes are made of 304 stainless steel, resistant to industrial wastewater corrosion, and the solenoid valves are compatible with the factory's 380V power supply, ensuring stable operation.

[0056] The working principle of an automatic water filtration control device based on a microcontroller: The raw water to be filtered is injected into the filter cylinder 100 through the inlet pipe 110. The raw water flows into the water quality detection chamber 130, where the water quality detection group 140 detects the water quality and transmits the signal to the microcontroller controller 900. The raw water then enters the inner cavity of the purification cylinder 500 through the filter hole 510 and is filtered through a multi-layer quartz sand filter layer with particle sizes decreasing. The purified water enters the pipe through the filter hole 2 of the filter pipe 150 and is transported to the water pump 210 by the suction pipe 220. When it passes through the water quality detection chamber 200, the water quality detection group 210 detects the water quality. Qualified water is pumped into the purification cylinder 200 for storage by the water pump 210, while unqualified water is returned to the filter cylinder 100 for reflux filtration through the return pipe. The microcontroller controller 900 can also control the injection of purification solution into the filter cylinder 100 through the solenoid valve and flow sensor of the dosing pipe.

[0057] During backwashing, the microcontroller controller 900 starts water pump 300, which sends purified water from the purified cylinder 200 through pump pipe 301 and pump pipe 302 into the suction pipe 220. The water then backwashes the sand filter layer through filter pipe 150 and filter holes 2. Wastewater enters the filter cylinder 100 through filter holes 510 and is discharged from the drain pipe 120. When raw water is injected, the water level in the filter cylinder 100 rises, causing the floating ring 620, the ring plate cleaning component 600, and the cleaning brush 640 to move upwards, cleaning them respectively. The outer wall of the purification cylinder 500 and the inner wall of the filter cylinder 100 are cleaned by the scraper 710 moving down with the pull rope 700. After the distance sensor at the top of the filter cylinder 100 detects that the magnetic ring 650 is in place, the microcontroller 900 controls the electromagnet 530 to engage and limit the movement. The solenoid valves of the inlet pipe 110, the outlet pipe 120 and other pipes, as well as the water pump 210 and the water pump 300, are all controlled by the microcontroller 900 to realize automated filtration and backwashing.

[0058] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this utility model.

Claims

1. A microcontroller-based automatic water filtration control device, characterized in that: The filter includes a filter cartridge (100) and a purification cartridge (500) vertically arranged in the middle of the inner cavity of the filter cartridge (100) for filtering raw water. The lower part of the inner cavity of the purification cartridge (500) is a sand filter layer. A filter hole (510) is opened through the upper part of the inner cavity of the purification cartridge (500) for the raw water to be filtered to enter and the backwash water to be discharged. A water pump (210) is provided on one side of the filter cartridge (100). The input end of the water pump (210) is connected to a suction pipe (220). A backwashing assembly is provided on the left side of the filter cartridge (100). The backwashing assembly includes a water pump (300) for providing power. The output end of the water pump (300) is connected to a pump pipe (302), and the pump pipe (302) is connected to the suction pipe (220).

2. The automatic water filtration control device based on a single-chip microcomputer according to claim 1, characterized in that: A purification cylinder (200) is provided on the left side of the filter cylinder (100) for storing purified raw water. The top of the purification cylinder (200) is connected to a water quality testing chamber (400) via a bracket. A water quality testing group (410) is installed on the surface of the water quality testing chamber (400) for testing the filtered raw water that enters the water quality testing chamber (400).

3. The automatic water filtration control device based on a single-chip microcomputer according to claim 2, characterized in that: The left side of the filter cartridge (100) is connected to a water quality testing chamber (130), and a water quality testing group (140) is installed inside the water quality testing chamber (130).

4. The automatic water filtration control device based on a single-chip microcomputer according to claim 3, characterized in that: A filter tube (150) is vertically installed inside the purification cylinder (500). The top of the filter tube (150) penetrates the sand filter layer and extends to the top of the inner cavity of the purification cylinder (500). Filter holes are opened on the surface of the filter tube (150) and inside the sand filter layer.

5. The automatic water filtration control device based on a single-chip microcomputer according to claim 4, characterized in that: The surface of the purification cylinder (500) is slidably fitted with a ring plate cleaning component (600), and the surface of the purification cylinder (500) is provided with a spiral groove (540). A ball (610) is movably embedded in the surface of the ring plate cleaning component (600), and one end of the ball (610) extends into the inner cavity of the spiral groove (540).

6. The automatic water filtration control device based on a single-chip microcomputer according to claim 5, characterized in that: The outer surface of the ring plate cleaning component (600) is fitted with a floating ring (620), which can float in the water in the filter cylinder (100). The outer surface of the floating ring (620) is connected to a connecting plate (630), and the outer surface of the connecting plate (630) is fitted with a cleaning brush (640).

7. The automatic water filtration control device based on a single-chip microcomputer according to claim 6, characterized in that: The top of the ring plate cleaning component (600) is connected to a pull rope (700), and a guide tube (701) is installed through the top of the surface of the purification cylinder (500). The other end of the pull rope (700) passes through the guide tube (701) and extends into the inner cavity of the purification cylinder (500). A limit buckle (702) is connected to the surface of the pull rope (700) and located on the outside of the purification cylinder (500).

8. The automatic water filtration control device based on a single-chip microcomputer according to claim 7, characterized in that: A magnetic ring (650) is fitted onto the top of the surface of the cleaning brush (640), while an electromagnet (530) is fitted onto the top of the inner cavity of the filter cartridge (100).

9. The automatic water filtration control device based on a single-chip microcomputer according to claim 8, characterized in that: The end of the pull rope (700) away from the ring plate cleaning component (600) is connected to a connecting ring plate (720), and a scraper (710) is sleeved on the outer side of the connecting ring plate (720). The scraper (710) is used to clean the inner wall of the purification cylinder (500).

10. The automatic water filtration control device based on a single-chip microcomputer according to claim 9, characterized in that: A single-chip microcontroller (900) is installed at the front end of the surface of the filter cartridge (100), and an alarm (800) is installed at the top of the end of the filter cartridge (100).

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