Natural water treatment device with filter material convenient to replace and replacement method

Abstract

This application relates to the technical field of water purification equipment, and discloses a natural water treatment device and method for easy filter media replacement. Through a structure including a slidable, pull-out filling tank, a rotating assembly, and a collection assembly, it effectively solves the problems of high labor intensity and hazardous working environment associated with manual filter media replacement in the prior art. When the filter media in the filling tank becomes ineffective, the rotating assembly drives the tank lid to rotate, causing the filling tank to rotate 180° with the cooperation of the rotating slide and the locking rod. Simultaneously, the pulling assembly pulls the filling tank out above the collection assembly. At this time, the scraping assembly automatically scrapes the ineffective filter media into the collection box, eliminating the need for personnel to enter the container for cleaning. This process achieves mechanized and semi-automated filter media replacement, reducing the intensity of manual operation and the risks of exposure to dust and confined spaces. Through integrated collection and treatment, it improves replacement efficiency and ensures operational safety, overcoming the drawbacks of traditional large-scale filter media replacement.

Description

Technical Field

[0001] This application relates to the technical field of water purification equipment, and more particularly to a natural water treatment device and method for easy replacement of filter media. Background Technology

[0002] In the field of water treatment, especially when large-scale purification of natural water sources such as river water, lake water, and reservoir water is carried out, multi-stage filtration processes with quartz sand filters and activated carbon adsorbers as the core are commonly used.

[0003] However, in actual operation, the filtration and adsorption performance of the aforementioned traditional purification equipment and processes, which are consumables, gradually becomes saturated and ineffective as the operating time increases. This manifests as increased filtration resistance (pressure difference) and decreased effluent quality. Therefore, it is necessary to regenerate or replace them regularly to restore equipment efficiency and ensure long-term stable compliance of effluent quality.

[0004] Currently, small and medium-sized integrated water purification equipment or modular filter units on the market are widely used in scenarios such as rural water supply, industrial circulating water, and decentralized water supply in scenic areas due to their small footprint and flexible installation. After a single filter of such equipment is filled with wet filter media, the total weight is usually in the hundreds of kilograms. Although it does not reach the level that requires the intervention of large lifting equipment, it has far exceeded the physical strength limit that a single person can safely carry.

[0005] When replacing the filter media in these medium-weight filter units, current technology still mainly relies on semi-mechanized and arduous manual operations. Specifically, operators need to first open the filter head, and then use high-pressure water guns or tools such as shovels to clean out the inside of the container, removing the heavy, contaminated filter media one by one. This process is not only time-consuming and labor-intensive, but also extremely inefficient, and the working environment is harsh (risks include dust, confined spaces, and residual water), posing a serious threat to personnel health and safety.

[0006] Therefore, there is an urgent need for a natural water treatment device and replacement method that facilitates filter media replacement to solve the above problems. The above content is only for assisting in understanding the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0007] The main objective of this application is to provide a natural water treatment device that facilitates filter media replacement, suitable for small and medium-sized filtration equipment, in order to solve the problems of inconvenient operation, low efficiency, and safety and environmental pollution risks that arise when replacing waste filter media in existing technical solutions.

[0008] To achieve the above objectives, this application provides a natural water treatment device that facilitates filter media replacement, including a base, an inlet tank on the base, an inlet pipe and an outlet pipe on the inlet tank, and the other end of the outlet pipe is sequentially connected to a primary filter tank, a secondary filter tank, a tertiary filter tank and an RO water treatment system.

[0009] The primary filter bucket includes a bucket body, a bucket lid, and a filling bucket. The filling bucket is slidably disposed inside the bucket body. One end of the bucket lid is rotatably connected to the filling bucket, and the other end of the bucket lid is connected to a rotating assembly. The rotating assembly is slidably disposed on an annular slide. The annular slide is provided in the direction of the filling bucket's extension, and the annular slide is connected to the base.

[0010] The outer wall of the filling barrel is provided with a rotating groove, and a locking rod is provided on the annular slide; the locking rod is adapted to the rotating groove.

[0011] A collecting component is provided on the base below the annular slide, a first pulling component is provided below the collecting component, and a second pulling component is provided on the annular slide. The first pulling component and the second pulling component are connected to the rotating component.

[0012] The filling bucket is provided with a scraping component, and a driving component for driving the scraping component to move is provided above the collecting component;

[0013] The rotating component, the driving component, the first pulling component, and the second pulling component are electrically connected to the control box.

[0014] As a preferred embodiment of this application, it also includes a buffer component. The buffer component is provided at the bottom of the primary filter tank and the bottom of the secondary filter tank. The buffer component is used to collect the water after the primary filter tank and the secondary filter tank are opened. The buffer component includes a buffer box, a baffle and an electric push rod. The baffle is slidably disposed on the buffer box and is connected to the output end of the electric push rod.

[0015] As a preferred embodiment of this application, the rotating assembly includes a mounting bracket, a second slider, a first motor, an annular slide rail, and rollers;

[0016] The first motor is mounted on the mounting frame, and the output end of the first motor is connected to the bucket lid.

[0017] The mounting bracket is provided with an annular slide rail at one end near the output shaft of the first motor, and a plurality of first sliders are provided on the bucket cover, the plurality of first sliders being rotatably connected to the annular slide rail;

[0018] The mounting bracket is provided with the second slider, which is slidably connected to the annular slide rail.

[0019] The mounting bracket is provided with rollers on its left and right sides, and the rollers are slidably connected to the annular slide.

[0020] As a preferred embodiment of this application, the first pulling assembly includes a dual-axis motor, a first winding wheel, a guide frame, a first guide rod, a first spring, a movable pulley, a first pull rope, and a second pull rope;

[0021] The base is provided with the dual-axis motor, and the two output ends of the dual-axis motor are respectively provided with two first winding wheels;

[0022] The base is provided with the guide frame, the guide frame is provided with a fixed pulley group and a first guide rod, the movable pulley is slidably connected to the guide frame through a bearing seat, and the two ends of the bearing seat are provided with sliding plates, the sliding plates being slidably connected to the first guide rod;

[0023] The first guide rod is provided with the first spring, one end of the first spring is connected to the sliding plate, and the other end of the first spring is connected to the guide frame;

[0024] One end of the first pull rope is connected to the sliding plate, and the other end of the first pull rope is connected to the first winding wheel;

[0025] One end of the second pull rope is connected to the rotating assembly, and the other end of the second pull rope passes through a fixed pulley group and a movable pulley in sequence and is connected to the guide frame.

[0026] As a preferred embodiment of this application, the scraping assembly includes a second guide rod, a scraper, a telescopic assembly, and a monitoring assembly.

[0027] The filling barrel is provided with a second guide rod inside, and the scraper is slidably connected to the second guide rod. The scraper is provided at both ends of the filling barrel.

[0028] The scraper has a slot, and the telescopic component is slidably disposed in the slot. The telescopic component includes a first wedge block and a third spring. The two side walls of the slot have symmetrical first grooves, and the first wedge block is disposed in the first groove. One end of the third spring is connected to the first wedge block, and the other end of the third spring is connected to the inner wall of the first groove.

[0029] The first chute forms a semi-open chute and a sealed chamber through a non-magnetic partition. The first wedge block is embedded with a first electromagnet, and a second electromagnet is provided in the sealed chamber.

[0030] The filling barrel has a mounting hole on one side near the slot, and the monitoring component is installed in the mounting hole. The mounting hole forms a sealed space with the scraper through a transparent sheet.

[0031] As a preferred embodiment of this application, the drive assembly includes a sliding guide, a lifting rod, an insert block, a fixed slide rod, a fixed block, a third slider, a second spring, a first cylinder, a second wedge block, and a bullseye wheel;

[0032] The base is provided with two support frames, and the two support frames are provided with sliding guide frames. Two fixed slide rods are provided between the two sliding guide frames. Fixed blocks are provided at both ends of the fixed slide rods. Two third sliders are slidably arranged on the fixed slide rods between the two fixed blocks. The second spring is provided between the two third sliders.

[0033] The first cylinder is provided at one end of the support frame away from the third slider, and the output end of the first cylinder is connected to the second wedge block.

[0034] The lifting rod is provided with bullseye wheels at both ends, and the bullseye wheels are slidably connected to the sliding guide. The lifting rod is located at the bottom of the fixed slide rod, and a groove is provided on the lifting rod. The size of the groove is adapted to the size of the fixed slide rod.

[0035] As a preferred embodiment of this application, the collection assembly includes a support rod, a fourth spring, a support plate, and a collection box;

[0036] The base is provided with the support rod, the support rod is sleeved with the fourth spring, the support plate is slidably connected to the support rod, the fourth spring is connected between the support plate and the base, and the collection box is provided on the support plate.

[0037] As a preferred embodiment of this application, it also includes a control box, a booster pump, a first detection component, and a second detection component;

[0038] The output end of the three-stage filter tank is connected to the inlet end of the RO water treatment system through a first water pipe, and the booster pump is installed on the first water pipe.

[0039] A second water pipe is provided between the primary filter tank and the secondary filter tank, and the first detection component is provided on the second water pipe;

[0040] A third water pipe is provided between the secondary filter barrel and the tertiary filter barrel, and the second detection component is provided on the third water pipe;

[0041] The booster pump, the first detection component, the second detection component, and the control box are electrically connected.

[0042] This application also provides a replacement method for a natural water treatment device with easily replaceable filter media, applicable to the aforementioned natural water treatment device with easily replaceable filter media, comprising the following steps:

[0043] The first and second detection components are used to detect the water flowing out of the primary and secondary filter tanks and then the results are fed back to the control box.

[0044] The control box determines that the filter media of the corresponding filter canister is ineffective or clogged, and at the same time depressurizes the target filter canister and simultaneously activates the buffer component to collect the residual water in the target filter canister.

[0045] The lid is driven to rotate relative to the barrel body to unlock by a rotating component. Then, the rotating component, the lid and the filling barrel are moved away from the barrel body along the annular slide by the first and second pulling components, so that the filling barrel is completely separated from the barrel body.

[0046] As the filling barrel moves on the annular slide, the locking rod on the annular slide cooperates with the rotating groove on the outer wall of the filling barrel, causing the filling barrel to gradually rotate, so that the exhausted filter material inside the filling barrel falls into the collection assembly below under the action of gravity;

[0047] When the filling barrel is flipped to the preset angle, the monitoring component is triggered to start the drive component. The drive component drives the scraping component to move back and forth along the guide direction inside the filling barrel, scraping off the residual filter material attached to the inner wall of the filling barrel. The residual filter material falls into the collection component.

[0048] After scraping and cleaning, the second pulling component, in conjunction with the first pulling component, moves the filling tank along the annular slide towards the tank body. During the movement, the opposing action of the locking rod and the rotating slide causes the filling tank to flip and reset. New filter media is then filled into the reset filling tank. After filling, the buffer component is closed.

[0049] Once the filling tank is moved to the preset installation position, the rotating component drives the tank cover to rotate relative to the tank body, achieving a sealed connection between the tank cover and the tank body; the water inlet passage and the passage between the target filter tank and the upstream and downstream filter structures are reopened, restoring the filtration operation of the device.

[0050] As a preferred embodiment of this application, the specific scraping steps of the scraping component after the filling barrel is flipped to a preset angle are as follows:

[0051] The control box controls the extension of the first cylinder in the drive assembly, which pushes the second wedge block to move; the inclined surface of the second wedge block contacts the lifting rod, raising the lifting rod so that the insert on the lifting rod is inserted into the slot on the scraper.

[0052] The control box controls the first cylinder to extend further, pushing the lifting rod. The lifting rod drives the scraper to move along the second guide rod to scrape the material inside the filling barrel.

[0053] After the scraping stroke on one side is completed, the first cylinder retracts and the scraper is reset by the action of the second spring; the control box controls the drive assembly on the other side to perform the same scraping steps, and scrapes repeatedly by alternating left and right.

[0054] This application provides a natural water treatment device that facilitates filter media replacement. Through a structure including a slidable, removable filling tank, a rotating assembly, and a collection assembly, it effectively solves the problems of high labor intensity and hazardous working environments associated with manual filter media replacement in the prior art. When the filter media in the filling tank becomes ineffective, the rotating assembly drives the tank lid to rotate, causing the filling tank to rotate 180° with the cooperation of the rotating slide and the locking rod. Simultaneously, the pulling assembly pulls the filling tank out above the collection assembly. At this point, the scraping assembly automatically scrapes the ineffective filter media into the collection box, eliminating the need for personnel to enter the container for cleaning. This process achieves mechanized and semi-automated filter media replacement, reducing the intensity of manual operation and the risks of exposure to dust and confined spaces. Furthermore, the integrated collection and processing improves replacement efficiency and ensures operational safety, thus overcoming the drawbacks of traditional large-scale filter media replacement. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of a first structure of a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0056] Figure 2 This is a schematic diagram of a second structure of a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0057] Figure 3 This is a schematic diagram of the water pipe connection of a natural water treatment device with easy filter media replacement according to an embodiment of this application;

[0058] Figure 4 This is a diagram of the first state of the filling tank after it extends out of the tank body in a natural water treatment device for easy replacement of filter media according to an embodiment of this application.

[0059] Figure 5 This is a cross-sectional view of the filling tank located in the tank body of a natural water treatment device for easy filter media replacement according to an embodiment of this application;

[0060] Figure 6 This is a schematic diagram of the rotating component in a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0061] Figure 7 This is a first exploded view of a natural water treatment device with easy filter media replacement according to an embodiment of this application;

[0062] Figure 8 This is a cross-sectional view of a scraper in a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0063] Figure 9 This application provides an embodiment of a natural water treatment device with easily replaceable filter media. Figure 8 An enlarged schematic diagram of part A in the middle;

[0064] Figure 10 This is a schematic diagram of the connection between the bucket lid and the bucket body in a natural water treatment device for easy replacement of filter media according to an embodiment of this application.

[0065] Figure 11 This is an initial state diagram of the drive component in a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0066] Figure 12 This is a schematic diagram of the connection between the annular slide and the clamping rod in a natural water treatment device for easy replacement of filter media according to an embodiment of this application.

[0067] Figure 13 This is a schematic diagram of the drive component in a natural water treatment device with easy filter media replacement according to an embodiment of this application.

[0068] Figure 14 This is a schematic diagram of the structure of the first pull component in a natural water treatment device for easy replacement of filter media according to an embodiment of this application;

[0069] Figure 15 This is a diagram showing the second state of the filling tank after it extends out of the tank body in a natural water treatment device for easy replacement of filter media according to an embodiment of this application.

[0070] Figure 16 This is a schematic diagram of the structure of a buffer component in a natural water treatment device with easy filter media replacement according to an embodiment of this application;

[0071] Figure 17 This is a diagram showing the operating state of the drive component in a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0072] Figure 18 This is a schematic diagram of the connection between the insert and the slot in a natural water treatment device for easy replacement of filter media according to an embodiment of this application.

[0073] Figure 19 This is a schematic diagram of a third structure of a natural water treatment device that facilitates filter media replacement, according to an embodiment of this application.

[0074] Figure 20This is a schematic diagram of the structure of a collection component in a natural water treatment device that facilitates filter media replacement, according to one embodiment of this application.

[0075] Explanation of reference numerals in the attached figures:

[0076] 1. Base; 2. Inlet tank; 3. Inlet pipe; 4. Outlet pipe; 5. Primary filter tank; 6. Secondary filter tank; 7. Tertiary filter tank; 8. RO water treatment system; 9. Rotating assembly; 10. Circular slide; 11. Clamping rod; 12. Collection assembly; 13. First pulling assembly; 14. Second pulling assembly; 15. Scraper assembly; 16. Buffer assembly; 17. Drive assembly; 18. Third pull rope;

[0077] 51. Barrel body; 52. Barrel lid; 53. Filling barrel; 54. Rotary chute; 55. Arc plate; 91. Mounting bracket; 92. First slider; 93. First motor; 94. Circular slide rail; 95. Second slider; 96. Roller; 121. Support rod; 122. Fourth spring; 123. Support plate; 124. Collection box; 131. Dual-axis motor; 132. First winding wheel; 133. Guide frame; 134. First guide rod; 135. First spring; 136. Movable pulley; 137. First pull rope; 138. Second pull rope; 139. Fixed pulley block; 1310. Sliding plate; 151. Second guide rod ; 152, scraper; 153, slot; 154, telescopic assembly; 155, transparent sheet; 161, buffer box; 162, baffle; 163, electric push rod; 171, sliding guide; 172, lifting rod; 173, fixed slide rod; 174, fixed block; 175, third slider; 176, second spring; 177, first cylinder; 178, second wedge block; 179, bullseye wheel; 1710, groove; 1711, insert block; 1541, first wedge block; 1542, third spring; 1543, first slide groove; 1544, partition; 1545, first electromagnet; 1546, second electromagnet. Detailed Implementation

[0078] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0079] Furthermore, descriptions using terms such as "first" and "second" in this application are for descriptive purposes only (e.g., to distinguish identical or similar elements) and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, technical solutions from different embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed in this application.

[0080] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 12 In one embodiment, the natural water treatment device provided in this application, which facilitates the replacement of filter media, includes a base 1, an inlet tank 2 on the base 1, an inlet pipe 3 and an outlet pipe 4 on the inlet tank 2, and the other end of the outlet pipe 4 is sequentially connected to a primary filter tank 5, a secondary filter tank 6, a tertiary filter tank 7 and an RO water treatment system 8; that is, the other end of the outlet pipe 4 is connected to the primary filter tank 5, and then the water flows sequentially through the secondary filter tank 6, the tertiary filter tank 7 and the RO water treatment system 8.

[0081] The primary filter canister 5 includes a canister body 51, a canister cover 52, and a filling canister 53. The filling canister 53 is slidably disposed inside the canister body 51. One end of the canister cover 52 is rotatably connected to the filling canister 53. It can be understood that a turntable is provided in the filling canister 53. The turntable is two cylinders of different diameters coaxially connected. The larger diameter cylinder is embedded in the filling canister 53, and the smaller diameter cylinder is connected to the canister cover 52.

[0082] The other end of the bucket lid 52 is connected to the rotating component 9, which is slidably mounted on the annular slide 10. The annular slide 10 is provided in the extension direction of the filling bucket 53, and the annular slide 10 is connected to the base 1.

[0083] The outer wall of the filling barrel 53 is provided with a rotating slide 54, and a locking rod 11 is provided on the annular slide 10; the locking rod 11 is adapted to the rotating slide 54.

[0084] A collection component 12 is provided on the base 1 below the annular slide 10. A first pulling component 13 is provided below the collection component 12. A second pulling component 14 is provided on the annular slide 10. The first pulling component 13 and the second pulling component 14 are connected to the rotating component 9.

[0085] A scraping assembly 15 is provided in the filling bucket 53, and a driving assembly 17 for driving the scraping assembly 15 to move is provided above the collecting assembly 12.

[0086] The rotating assembly 9, the driving assembly 17, the first pulling assembly 13, and the second pulling assembly 14 are electrically connected to the control box.

[0087] It should be noted that in this embodiment, the filling tank 53 in the primary filter tank 5 is provided with a connection hole (not shown in the figure), and a filter plate is provided on the connection hole. The filter plate is provided with multiple filter holes, the size of which is smaller than the size of the filter media particles and allows water to pass through smoothly.

[0088] This connection hole is used to connect the primary filter tank 5 and the secondary filter tank 6 through the second water pipe, ensuring that the water in the primary filter tank 5 can enter the secondary filter tank 6. The filling tank 53 in the secondary filter tank 6 is also equipped with a corresponding connection hole and filter plate, specifically located at the inlet of the third water pipe connected to the tertiary filter tank 7. The difference lies in the different positions of the connection hole and filter plate, but they serve the same function.

[0089] Please refer to Figure 5 More specifically, in this embodiment, the water inlet tank 2 and the primary filter tank 5 are connected by a fourth water pipe; in order to prevent the water inlet from directly impacting the filter layer or forming a short flow, an arc-shaped plate 55 is fixedly installed inside the tank body 51 near the outlet port of the fourth water pipe.

[0090] The outlet port of the fourth water pipe passes through the barrel 51 and extends into it. The length of the extended part exceeds the position of the scraper 152 of the scraper assembly 15 in the initial state. The arc plate 55 is arc-shaped and is set vertically or inclined in front of the outlet port of the fourth water pipe. Its arc concave surface faces the water outlet direction of the fourth water pipe. Several arc-shaped openings or water distribution holes are opened on the arc plate 55.

[0091] A gap is provided between the bottom of the arc plate 55 and the top of the filling barrel 53 to prevent the filling barrel 53 from interfering with the arc plate 55 when it is moved out or reset.

[0092] When water flows in at high speed from the fourth water pipe, it first impacts the concave surface of the arc plate 55. Through the blocking and guiding effect of the arc plate 55, the kinetic energy of the water flow is consumed, achieving buffering and deceleration. After buffering, the water flows out through the arc-shaped openings or water distribution holes on the arc plate 55, changing the original unidirectional direct flow state and making the water flow evenly distributed on the surface of the filter media layer below. This avoids channeling or impact depressions in the filter media layer due to excessively high local water flow velocity. At the same time, some of the water flowing out from the fourth water pipe can also flow through the gaps at the bottom of the arc plate 55, serving as an auxiliary water distribution channel. Through the above structure, it is ensured that the water flow is fully buffered and evenly distributed before entering the filter layer, thereby improving filtration efficiency and preventing unfiltered water from directly entering the next stage of the pipeline.

[0093] Furthermore, one end of the lid 52 is rotatably connected to the filling barrel 53. It can be understood that a turntable is provided in the filling barrel 53. The turntable structure is specifically two cylinders of different diameters coaxially connected. The larger diameter cylinder is embedded in the filling barrel 53, and the smaller diameter cylinder is connected to the lid 52. When the rotating component 9 drives the lid 52 to rotate, the larger cylinder in the turntable rotates freely in the filling barrel 53. Therefore, when the lid 52 is opened and closed, the filling barrel 53 will not rotate. When the rotating groove 54 on the filling barrel 53 contacts the locking rod 11, the filling barrel 53 rotates. At this time, the filling barrel 53 will rotate freely around the larger cylinder and will not interfere with the lid 52.

[0094] Furthermore, the control box is pre-programmed with a control program and integrates a clock circuit, power supply module, digital input module, analog input module, and RS485 communication module. The clock circuit is specifically integrated into the main control board of the control box (such as a microcontroller, PLC, or embedded system). The clock circuit generates continuous clock pulse signals to provide a unified time reference for the control box. Based on the time reference provided by the clock circuit and combined with the preset timing logic, the control program in the control box generates corresponding control commands and outputs them sequentially to the rotating component 9, the first pulling component 13, the second pulling component 14, and the drive component 17. This precisely controls each component to coordinate its actions according to the preset action sequence and time interval, thereby achieving automated replacement of the filter media.

[0095] More specifically, in order to achieve precise positioning and control of the filling barrel 53 during movement and rotation, multiple position detection sensors are provided at intervals along the movement path of the filling barrel 53 on the annular slide 10, and detection marks are correspondingly provided on the side of the mounting frame 91 and the bottom or side of the filling barrel 53. The detection marks are metal induction blocks or permanent magnets.

[0096] Each position detection sensor is electrically connected to the digital input module of the control box; when the filling bucket 53 moves along the annular slide 10 with the mounting frame 91, the detection mark passes through each position detection sensor in sequence, triggering the corresponding sensor to output a switch signal; the control box determines the current position according to the received signal sequence, and controls the first pulling component 13, the second pulling component 14, and the first motor 93 to perform corresponding actions according to the preset program;

[0097] To establish damping in a timely manner when the filling bucket 53 enters the gravity acceleration zone and control its rotation speed, the position detection sensor includes a rotation initial detection sensor. Preferably, in this embodiment, the rotation initial detection sensor is installed on the annular slide 10, and its installation position corresponds to the moving distance of the mounting frame 91 when the filling bucket 53 rotates 45°. When the mounting frame 91 moves to this position, the sensor is triggered, and the control box determines that the filling bucket 53 has rotated to about 45°, confirming that it has entered the gravity acceleration zone.

[0098] At this time, the control box drives the friction assembly located on the back of the filling barrel 53 to run. The friction plate on the friction assembly contacts the outer wall of the filling barrel 53 to generate friction, so as to prevent the filling barrel 53 from rotating too fast due to the acceleration of gravity when it rotates to more than 90°.

[0099] Preferably, in this embodiment, the friction assembly includes a second cylinder, a connecting plate, a fifth spring, a mounting plate, and a friction plate; the second cylinder is fixedly connected to the annular slide 10 via a mounting bracket 91, and its output end is fixedly connected to the connecting plate; a third guide rod is fixedly provided on the connecting plate, and the mounting plate is slidably sleeved on the third guide rod; the fifth spring is sleeved on the third guide rod, with one end abutting against the connecting plate and the other end abutting against the mounting plate, for providing preload; a friction plate is fixedly provided on the side of the mounting plate near the filling barrel 53, the friction plate being made of wear-resistant material, with its friction surface facing the outer wall of the filling barrel 53;

[0100] When the control box triggers the friction assembly to run, the second cylinder extends, pushing the connecting plate and mounting plate toward the filling barrel 53 until the friction plate contacts the outer wall of the filling barrel 53; the preload of the fifth spring keeps the friction plate pressed against the outer wall of the filling barrel 53 with a certain pressure, generating a stable friction force; when it is necessary to release the friction, the second cylinder retracts, driving the mounting plate and friction plate to detach from the filling barrel 53.

[0101] The friction pads are preferably made of polyetheretherketone (PEEK) or ultra-high molecular weight polyethylene (UHMW-PE), which have self-lubricating properties, good wear resistance, stable friction coefficient, and are suitable for immersion conditions. By adjusting the compression of the fifth spring or the extension pressure of the second cylinder, the magnitude of the friction force can be precisely controlled to meet the needs of different working conditions.

[0102] Meanwhile, the position detection sensor also includes a material unloading completion detection sensor and a reset completion detection sensor. The material unloading completion detection sensor corresponds to the movement distance of the mounting frame 91 when the filling barrel 53 rotates to 180°, and the reset completion detection sensor corresponds to the movement distance of the mounting frame 91 when the filling barrel 53 rotates in the opposite direction and returns to 0° (opening upwards).

[0103] Specifically, each position detection sensor uses an inductive proximity switch, preferably the Omron E2E-X2ME1 type. The control box has a preset control program and an integrated clock circuit. When the mounting bracket 91 moves with the filling barrel 53, the metal detection mark triggers each position sensor in sequence, and the sensor outputs a switch signal to the control box. The control box determines the position and executes corresponding control based on the received signal, combined with the current process stage and the cumulative time recorded by the clock circuit.

[0104] It should be noted that when the reset completion detection sensor is triggered, if the current unloading start stage is in progress, the control box will pause for a preset time (e.g., 2 seconds) via the clock circuit before continuing unloading; if the current reset completion stage is in progress, the control box will confirm that the filling tank 53 has returned to its initial position (opening upwards), then stop pulling the component and issue a prompt to wait for new filter media to be filled.

[0105] It is understood that in this embodiment, the quality of the water discharged from the outlet pipe 4 can be used to determine whether the filter media (such as quartz sand) in the primary filter tank 5 needs to be replaced due to saturation. For example, when the turbidity of the effluent is >1 NTU (or 0.5-1 NTU higher than the turbidity of the effluent during initial filtration, where NTU is a unit of scattering turbidity), replacement should be considered; or replacement can be carried out periodically based on experimental data inference.

[0106] During replacement, the first pulling component 13 drives the rotating component 9 to move on the annular slide 10. The rotating component 9 drives the connected lid 52 to rotate, thereby causing the filling bucket 53, which is rotatably connected to the lid 52, to slide out from inside the bucket body 51. During the sliding out process of the filling bucket 53, the rotating groove 54 on its outer wall interacts with the locking rod 11 on the annular slide 10, guiding the filling bucket 53 to complete an approximately 180° rotation at the end of the extraction. At this time, the scraping component 15 set inside the filling bucket is triggered or driven to scrape off the failed filter media inside the bucket, causing it to fall into the preset collection component 12 below, thus completing the automatic cleaning and collection of the filter media, replacing the traditional manual operation. The entire replacement process is completed by the coordinated mechanical components, realizing the mechanization and automation of filter media replacement and solving the problem of manual replacement mentioned in the background art.

[0107] Specifically, please refer to Figure 2 , Figure 3 , Figure 16Based on the above embodiments, a buffer component 16 is also included. A buffer component 16 is provided at the bottom of the primary filter tank 5 and the bottom of the secondary filter tank 6. The buffer component 16 is used to collect the water after the primary filter tank 5 and the secondary filter tank 6 are opened. The buffer component 16 includes a buffer tank 161, a baffle 162 and an electric push rod 163. The baffle 162 is slidably arranged on the buffer tank 161 and is connected to the output end of the electric push rod 163.

[0108] Specifically, please refer to Figure 1 , Figure 4 , Figure 6 , Figure 10 Based on the above embodiments, the rotating assembly 9 includes a mounting bracket 91, a second slider 95, a first motor 93, an annular slide rail 94, and a roller 96;

[0109] A first motor 93 is installed on the mounting bracket 91, and the output end of the first motor 93 is connected to the bucket lid 52.

[0110] An annular slide rail 94 is provided at one end of the mounting bracket 91 near the output shaft of the first motor 93. Several first sliders 92 are provided on the barrel cover 52, and the several first sliders 92 are rotatably connected to the annular slide rail 94.

[0111] The mounting bracket 91 is provided with a second slider 95, which is slidably connected to the annular slide rail 94.

[0112] Rollers 96 are provided on the left and right sides of the mounting bracket 91, and the rollers 96 are slidably connected to the annular slide 10.

[0113] It is understandable that when the control box receives the filter media replacement signal and closes the inlet valve, it first controls the electric push rod 163 to retract, causing the baffle 162 to slide and open the drain port of the buffer tank 161; then it controls the rotating component 9 to open the tank cover 52. At this time, the water remaining in the tank body 51 and the filling tank 53 flows into the buffer tank 161 for temporary storage under the action of gravity; the outlet of the buffer tank 161 is connected to the inlet tank 2 through the return pipe. When the water level in the buffer tank 161 reaches the preset height, the control box opens the valve on the return pipe, so that the buffer water flows back to the inlet tank 2, mixes with the subsequent inlet water, and re-enters the filtration system.

[0114] After the filter media is replaced and the lid 52 is resealed, the control box controls the electric push rod 163 to extend, which drives the baffle 162 to slide and close the drain port of the buffer box 161, in preparation for the next replacement.

[0115] The aforementioned buffer component 16 effectively solves the problem of residual water overflowing when the filter canister is turned on, while also enabling water recycling and reuse, thus improving the system's water-saving performance.

[0116] Specifically, please refer to Figure 1 , Figure 10 , Figure 14 Based on the above embodiments, the first pulling component 13 includes a dual-axis motor 131, a first winding wheel 132, a guide frame 133, a first guide rod 134, a first spring 135, a movable pulley 136, a first pull rope 137, and a second pull rope 138.

[0117] A dual-axis motor 131 is provided on the base 1, and two first winding wheels 132 are respectively provided on the two output ends of the dual-axis motor 131.

[0118] A guide frame 133 is provided on the base 1. A fixed pulley group 139 and a first guide rod 134 are provided on the guide frame 133. A movable pulley 136 is slidably connected to the guide frame 133 through a bearing seat. Sliding plates 1310 are provided at both ends of the bearing seat. The sliding plates 1310 are slidably connected to the first guide rod 134.

[0119] A first spring 135 is provided on the first guide rod 134. One end of the first spring 135 is connected to the sliding plate 1310, and the other end of the first spring 135 is connected to the guide frame 133.

[0120] The number of first pull ropes 137 is two in a group, one end of each first pull rope 137 is connected to the sliding plate 1310, and the other end of each first pull rope 137 is connected to the first winding wheel 132.

[0121] One end of the second pull rope 138 is connected to the rotating component 9, and the other end of the second pull rope 138 is connected to the guide frame 133 via the fixed pulley group 139 and the movable pulley 136 in sequence.

[0122] Preferably, in this embodiment, the dual-axis motor 131 is specifically a dual-axis reduction motor. It can be understood that the structure and working principle of the second pulling component 14 are the same as those of the first pulling component 13, so they will not be described again. For further distinction, the second pulling component 14 is represented by a third pull rope 18, indicating its connection to the rotating component 9. That is, one end of the third pull rope 18 passes through the fixed pulley group 139 and the movable pulley 136 in the second pulling component 14 and is connected to the guide frame 133 in the second pulling component 14. The other end of the third pull rope 18 is fixedly connected to the second slider 95. Among them, the first pull rope 137, the second pull rope 138 and the third pull rope 18 are all steel ropes.

[0123] The pulley system composed of the movable pulley 136 and the fixed pulley group 139 in the first pulling assembly 13 and the second pulling assembly 14 can achieve the effects of saving effort and space. Specifically, one end of the second pull rope 138 is fixed to the guide frame 133, passes through the movable pulley 136 and the fixed pulley group 139 in sequence, and is connected to the rotating assembly 9 to form a movable pulley mechanism. According to the principle of mechanics, the driving force acting on the sliding plate 1310 (i.e., the resultant force of the reaction force of the first spring 135 and the tension of the first pull rope 137) is only half of the tension at the load end, which achieves a 2x effort-saving effect, allowing the dual-axis reduction motor to drive the filter barrel assembly weighing hundreds of kilograms. At the same time, the movable pulley 136 only needs to move half of the travel of the mounting frame 91, eliminating the need for a pulling device with the same travel as the mounting frame 91, thus saving more space overall.

[0124] Meanwhile, the first spring 135 absorbs the impact during the start-up and stop phases by utilizing elastic deformation, providing flexible buffering; on the other hand, when the dual-axis motor 131 releases the pull rope, the elastic force of the first spring 135 pushes the sliding plate 1310 and the movable pulley 136 to move in the opposite direction; that is, the first spring 135 is used to assist the movable pulley 136 and the sliding plate 1310 in resetting.

[0125] It should be noted that, in order to ensure that the active traction of any component is not affected by the elastic interference of the other component, the rated traction force output by the dual-axis reduction motor on the active side is significantly greater than the elastic reaction force generated by the first spring 135 on the passive side when it is at its maximum compression or extension stroke. At the same time, when the first pulling component 13 performs the pulling action, the control box will simultaneously send a command to the dual-axis motor in the second pulling component 14, so that it outputs a small torque in the reverse direction.

[0126] Specifically, when the first pulling component 13 is the active side, that is, when the first pulling component 13 pulls the mounting bracket 91 and the filling bucket 53 to move away from the bucket body 51, the dual-shaft reduction motor retracts the rope, the movable pulley 136 is pulled, and the first spring 135 in the first pulling component 13 is gradually compressed.

[0127] At the same time, as the second pulling assembly 14 is the driven side, as the mounting bracket 91 is pulled away, the third pull rope 18 connected to the mounting bracket 91 is pulled out, which drives the movable pulley on the driven side to move, causing the first spring in the second pulling assembly 14 to be gradually stretched.

[0128] Specifically, please refer to Figure 5 , Figure 7 , Figure 8 , Figure 9 Based on the above embodiments, the scraping assembly 15 includes a second guide rod 151, a scraper 152, a telescopic assembly 154, and a monitoring assembly.

[0129] A second guide rod 151 is provided inside the filling barrel 53, and a scraper 152 is slidably connected to the second guide rod 151. Scrapers 152 are provided at both ends of the filling barrel 53.

[0130] The scraper 152 has a slot 153, and a telescopic component 154 is slidably disposed in the slot 153. The telescopic component 154 includes a first wedge block 1541 and a third spring 1542. The two side walls of the slot 153 are symmetrically provided with first sliding grooves 1543, and the first wedge block 1541 is disposed in the first sliding groove 1543. One end of the third spring 1542 is connected to the first wedge block 1541, and the other end of the third spring 1542 is connected to the inner wall of the first sliding groove 1543.

[0131] By setting the telescopic component 154, it can actively occupy the space of the slot 153 under normal conditions to prevent impurities or filter media from clogging the slot 153. When needed, it can passively push open the first wedge block 1541 through the insert block 1711 to ensure reliable cooperation between the insert block 1711 and the slot 153, thus solving the problem that the insert block 1711 cannot be inserted due to filter media residue.

[0132] The first chute 1543 forms a semi-open chute and a closed chamber through a non-magnetic partition 1544. The first wedge block 1541 is embedded with a first electromagnet 1545, and a second electromagnet 1546 is provided in the closed chamber.

[0133] A mounting hole is provided on one side of the filling barrel 53 near the slot 153. A monitoring component is installed in the mounting hole. The mounting hole forms a sealed space with the scraper 152 through the transparent sheet 155.

[0134] More specifically, the monitoring components are an infrared transmitter and an infrared receiver. The infrared transmitter is installed in a mounting hole on the filling barrel 53. The mounting hole has a battery compartment, which contains a button lithium battery (such as CR2032) to provide power to the infrared transmitter. The positive and negative terminals of the battery compartment are connected to the infrared transmitter circuit through spring contacts. The opening of the battery compartment is provided with a waterproof sealing cap for easy replacement.

[0135] A normally open reed switch is connected in series in the power supply circuit of the infrared transmitter. The reed switch is installed on the filling barrel 53 and is located adjacent to the infrared transmitter. A permanent magnet is embedded in the annular slide 10 at the position corresponding to the reed switch. When the filling barrel 53 rotates to a predetermined position of 180° and remains stationary after a preset time, the reed switch moves with the filling barrel 53 to the vicinity of the permanent magnet and closes under the action of the magnetic field, connecting the circuit between the infrared transmitter and the battery. In other positions, the reed switch is open, and the infrared transmitter is completely de-energized, so that the infrared transmitter is only activated when there is a detection requirement, avoiding power waste.

[0136] The circuit board of the infrared transmitter integrates a low-power oscillation circuit. When the reed switch is closed, the oscillation circuit immediately drives the infrared emitting diode to emit an infrared beam in pulse mode. In this embodiment, the infrared transmitter preferably uses the SFH4511 infrared emitting diode manufactured by OSRAM, with a peak wavelength of 940nm and an emission angle of ±10°.

[0137] An infrared receiver is embedded in the annular carriage 10 at a position corresponding to the infrared transmitter. Its installation method is the same as that of the infrared transmitter. It is sealed by opening a mounting hole and using an optical window (such as borosilicate glass) with an infrared transmittance of ≥90%. The surface of the window is flush with the inner wall of the annular carriage 10. The infrared receiver preferably uses an SFH213 photodiode that is compatible with SFH4511. Its output terminal is connected to the signal conditioning circuit of the control box through a cable. This circuit includes a transimpedance amplifier, a bandpass filter and a voltage comparator.

[0138] The infrared transmitter and infrared receiver together constitute an infrared detection component, used to detect whether the filling barrel 53 has rotated to a predetermined angle. When the filling barrel 53 moves with the mounting frame 91 and rotates to 180°, the infrared transmitter on the filling barrel 53 and the infrared receiver on the annular slide 10 are exactly aligned. The infrared beam is emitted from the transmitter and received by the receiver. The voltage signal generated after photoelectric conversion is processed by the signal conditioning circuit and transmitted to the control box through the cable. The control box determines that the filling barrel 53 has rotated to the correct position based on this signal and triggers the drive component 17 to start the scraping process accordingly.

[0139] Both the infrared transmitter and receiver are encapsulated in epoxy resin or installed in a sealed housing to meet the protection requirements for immersion conditions.

[0140] Specifically, please refer to Figure 1 , Figure 2 , Figure 10 , Figure 11 , Figure 13 , Figure 17 , Figure 18 , Figure 19 Based on the above embodiments, the drive assembly 17 includes a sliding guide 171, a lifting rod 172, an insert block 1711, a fixed slide rod 173, a fixed block 174, a third slider 175, a second spring 176, a first cylinder 177, a second wedge block 178, and a bullseye wheel 179.

[0141] The base 1 is provided with two support frames, and the two support frames are provided with sliding guide frames 171. Two fixed slide rods 173 are provided between the two sliding guide frames 171. Fixed blocks 174 are provided at both ends of the fixed slide rods 173. Two third sliders 175 are slidably arranged on the fixed slide rods 173 between the two fixed blocks 174. A second spring 176 is provided between the two third sliders 175.

[0142] A first cylinder 177 is provided at the end of the support frame away from the third slider 175, and the output end of the first cylinder 177 is connected to a second wedge block 178.

[0143] The lifting rod 172 is provided with bullseye wheels 179 at both ends. The bullseye wheels 179 are slidably connected to the sliding guide 171. The lifting rod 172 is located at the bottom of the fixed slide rod 173. The lifting rod 172 is provided with a groove 1710. The size of the groove 1710 is adapted to the size of the fixed slide rod 173.

[0144] Specifically, please refer to Figure 1 , Figure 15 , Figure 19 , Figure 20 Based on the above embodiments, the collection component 12 includes a support rod 121, a fourth spring 122, a support plate 123, and a collection box 124.

[0145] A support rod 121 is provided on the base 1, a fourth spring 122 is sleeved on the support rod 121, a support plate 123 is slidably connected to the support rod 121, the fourth spring 122 is connected between the support plate 123 and the base 1, and a collection box 124 is provided on the support plate 123.

[0146] It is understandable that the fourth spring 122 is set up to buffer the impact load generated by the collection box 124 when receiving filter material, and to allow the support plate 123 and the collection box 124 to float within a certain range to adapt to the height changes of collection boxes 124 of different specifications. When the collection box 124 is full of filter material, a forklift can be used to lift the collection box 124 together with the support plate 123 from the upper end of the support rod 121 and transport it away for disposal. After emptying, the collection box 124 and the support plate 123 are put back on the support rod 121 and restored by the fourth spring 122.

[0147] It should be noted that, in order to ensure that the exhausted filter media falls completely into the collection box 124, the top opening size of the collection box 124 should be larger than the projected range of the movement trajectory of the discharge port of the filling barrel 53. Specifically, when the filling barrel 53 rotates 180° to discharge during the movement, the movement trajectory of its discharge port forms a spatial curved surface. The coverage area of ​​the collection box 124 should completely enclose the projection area of ​​this curved surface on the ground, so as to ensure that even if the filter media is scattered to some extent during the throwing process, it can still fall into the collection box 124, avoiding the exhausted filter media from falling to the ground and causing pollution.

[0148] Specifically, please refer to Figure 3 Based on the above embodiments, it also includes a control box (not shown in the figure), a booster pump, a first detection component, and a second detection component;

[0149] The output end of the three-stage filter tank 7 is connected to the inlet end of the RO water treatment system 8 through the first water pipe, and a booster pump is installed on the first water pipe.

[0150] A second water pipe is installed between the primary filter tank 5 and the secondary filter tank 6, and a first detection component is installed on the second water pipe;

[0151] A third water pipe is installed between the secondary filter tank 6 and the tertiary filter tank 7, and a second detection component is installed on the third water pipe;

[0152] The booster pump, the first detection component, the second detection component, and the control box are electrically connected.

[0153] The first detection component specifically employs a differential pressure sensor, specifically the MDM491 differential pressure transmitter manufactured by MicroSensor Co., Ltd., with a range of 0–100 kPa, outputting a 4–20 mA standard analog signal, and an accuracy of ±0.25%FS. This differential pressure sensor is used to monitor the degree of filter bed clogging in the primary filter tank 5 in real time. It integrates a differential pressure sensitive element (such as a piezoresistive silicon chip or a capacitive membrane). The high-pressure end of the sensor is connected to the inlet of the primary filter tank 5 through a pressure tapping pipeline, and the low-pressure end is connected to the outlet. The inlet and outlet water pressures act simultaneously on both sides of the sensitive element, causing the sensitive element to undergo a physical deformation (or bridge imbalance) proportional to the pressure difference between the two sides.

[0154] The sensor's internal circuitry converts this physical change into a 4-20mA standard analog signal and transmits it to the control box in real time. The control box calculates the real-time differential pressure ΔP based on the received signal value and compares it with a preset threshold.

[0155] When the detected differential pressure value continuously exceeds the preset threshold (e.g., 0.5 bar to 1 bar), the control box determines that the filter bed is severely clogged and the backwashing process needs to be started; if the differential pressure rises again quickly after backwashing, it is determined that the filter media may be caked or severely clogged and the filter media replacement process needs to be started.

[0156] The second detection component specifically uses a residual chlorine sensor. The preferred residual chlorine sensor is the GNST-FCl238 model produced by Suijing Company. It adopts the constant voltage method measurement principle, with a range of 0 to 20 mg / L, an accuracy of ±0.05 mg / L, automatic temperature and pH compensation functions, and outputs RS485 Modbus protocol digital signals.

[0157] This sensor is used to monitor the residual chlorine concentration in the effluent of the secondary filter tank 6 in real time and to determine whether the activated carbon filter media has failed. The sensor is immersed in the third water pipe between the secondary filter tank 6 and the tertiary filter tank 7. Under the action of a constant potential, its working electrode undergoes an oxidation-reduction reaction with hypochlorous acid in the water, generating a current signal that is proportional to the residual chlorine concentration. The microprocessor inside the sensor combines the compensation data from the temperature sensor and the pH sensor to calculate the accurate residual chlorine concentration value.

[0158] The sensor communicates with the control box via an RS485 bus: the power cord is connected to DC 24V, the RS485 A+ line is connected to the A+ terminal of the RS485 module in the control box, and the RS485 B- line is connected to the B- terminal. The sensor periodically uploads data such as residual chlorine value, pH value, and temperature according to the Modbus RTU protocol. The control box obtains the real-time residual chlorine concentration through protocol parsing. When the residual chlorine concentration exceeds a preset threshold (e.g., 0.05 mg / L to 0.1 mg / L), it determines that the activated carbon adsorption capacity has been exhausted, triggering the filter media replacement process of the secondary filter cartridge 6.

[0159] This application also provides a replacement method for a natural water treatment device that facilitates filter media replacement, applicable to the aforementioned natural water treatment device that facilitates filter media replacement, comprising the following steps:

[0160] The water flowing out of the primary filter tank 5 and the secondary filter tank 6 is detected by the first detection component and the second detection component, and the results are fed back to the control box.

[0161] The control box determines that the filter media of the corresponding filter canister is ineffective or clogged, and at the same time depressurizes the target filter canister and simultaneously activates the buffer component 16 to collect the residual water in the target filter canister.

[0162] The rotating component 9 drives the lid 52 to rotate relative to the barrel body 51 to unlock. Then, the first pulling component 13 and the second pulling component 14 drive the rotating component 9, the lid 52 and the filling barrel 53 to move along the annular slide 10 away from the barrel body 51, so that the filling barrel 53 is completely separated from the barrel body 51.

[0163] As the filling barrel 53 moves on the annular slide 10, the locking rod 11 on the annular slide 10 cooperates with the rotating slide groove 54 on the outer wall of the filling barrel 53, causing the filling barrel 53 to gradually rotate, so that the failed filter material in the filling barrel 53 falls into the collection component 12 below under the action of gravity.

[0164] When the filling barrel 53 is flipped to a preset angle, the monitoring component is triggered to start the drive component 17. The drive component 17 drives the scraping component 15 to move back and forth in the guide direction inside the filling barrel 53, scraping off the residual filter material attached to the inner wall of the filling barrel 53. The residual filter material falls into the collection component 12.

[0165] After the scraping and cleaning is completed, the second pulling component 14, together with the first pulling component 13, drives the filling barrel 53 to move along the annular slide 10 towards the barrel body 51. During the movement, the locking rod 11 and the rotating slide 54 cooperate in opposite directions to make the filling barrel 53 flip and reset. New filter material is filled into the reset filling barrel 53. After filling is completed, the buffer component 16 is closed.

[0166] After the filling tank 53 is moved to the preset installation position, the rotating component 9 drives the tank cover 52 to rotate relative to the tank body 51, thereby achieving a sealed connection between the tank cover 52 and the tank body 51; the water inlet passage and the passage between the target filter tank and the upstream and downstream filter structures are reopened, and the filtration operation of the device is restored.

[0167] Specifically, based on the above embodiments, the scraping steps of the scraping assembly 15 after the filling barrel 53 is flipped to a preset angle are as follows:

[0168] The control box controls the extension of the first cylinder 177 in the drive assembly 17, pushing the second wedge block 178 to move; the inclined surface of the second wedge block 178 contacts the lifting rod 172, raising the lifting rod 172, so that the insert block 1711 on the lifting rod 172 is inserted into the slot 153 on the scraper 152;

[0169] The control box controls the first cylinder 177 to extend further, pushing the lifting rod 172. The lifting rod 172 drives the scraper 152 to move along the second guide rod 151 to scrape the material inside the filling barrel 53.

[0170] After the scraping stroke on one side is completed, the first cylinder 177 retracts and the scraper 152 is reset under the action of the second spring 176; the control box controls the drive assembly 17 on the other side to perform the same scraping steps, and scrapes the material repeatedly by alternating left and right.

[0171] In summary, please refer to Figures 1-20 The natural water treatment device provided in this application, which facilitates filter media replacement, is used as follows: First, the inlet pipe 3 on the inlet tank 2 is connected to the outlet pipe 4 of the water pump. Natural water introduced from the outside flows out from the outlet pipe 4 of the water pump and enters the inlet tank 2 along the inlet pipe 3. In the inlet tank 2, it first undergoes initial sedimentation, which settles impurities to the bottom of the inlet tank 2. Then, the upper clear liquid enters the primary filter tank 5 filled with quartz sand along the outlet pipe 4 of the inlet tank 2. In the primary filter tank 5, anthracite, quartz sand, magnetite, and pebbles are filled from top to bottom. The upper clear liquid passes through these filter media from top to bottom. Utilizing the design of the different filter media in the primary filter tank 5 with differences in particle size and specific gravity, residual suspended solids, colloids, turbidity, algae, and some large organic particles in the water are removed step by step.

[0172] Subsequently, the water flows sequentially into the secondary filter tank 6 filled with activated carbon, the tertiary filter tank 7 filled with PP cotton, and finally into the RO water treatment system 8 under the action of the booster pump. The purified water after being treated by the RO water treatment system 8 flows out from the outlet pipe 4 of the RO water treatment system 8, while the concentrated water after being treated by the RO water treatment system 8 is discharged from the wastewater pipe of the RO water treatment system 8. Finally, it can flow back to the inlet tank 2 for further filtration or be stored in a special water storage tank.

[0173] A differential pressure sensor is installed on the second water pipe between the primary filter tank 5 and the secondary filter tank 6. When the differential pressure reaches a preset threshold, it indicates that the filter bed is severely clogged and backwashing is required. If the differential pressure rises again quickly after backwashing, it indicates that the filter media may be caked or severely clogged and needs to be replaced. The differential pressure sensor is electrically connected to the control box, which can receive data from the differential pressure sensor in real time. When the control box receives an abnormal value from the differential pressure sensor, it closes the valve on the inlet tank 2 and the switch valve between the primary filter tank 5 and the secondary filter tank 6.

[0174] At this time, the control box first opens the pressure relief valve located on the primary filter tank 5 to release pressure. Simultaneously, the control box controls the electric push rod 163 to retract, causing the baffle 162 to move and opening the buffer tank 161. After the preset time for pressure release is completed, the control box then controls the first motor 93 to slowly rotate. Since the tank cover 52 and the tank body 51 are connected by threads and waterproof tape, the rotation of the first motor 93 drives the tank cover 52 to rotate. The first slider 92 on the tank cover 52 rotates along the annular slide 10. At the same time, the control... The box controls the rotation of the dual-axis motor 131, which drives the first winding wheel 132 to rotate. During the rotation of the first winding wheel 132, the first pull rope 137 is wound up. During the winding process, the first pull rope 137 pulls the movable pulley 136 to slide along the first guide rod. At this time, the sliding plates 1310 at both ends of the bearing seat gradually squeeze the first spring 135. During the movement of the movable pulley 136, the second pull rope 138 is also pulled. At this time, the mounting bracket 91 also slides along the annular slide 10 under the action of the second pull rope 138.

[0175] It is understandable that while the mounting frame 91 moves, the first motor 93 drives the lid 52 to rotate, enabling the lid 52 to open automatically. After opening, the water remaining inside the bucket 51 will enter the buffer tank 161 in the buffer assembly 16 for storage. The buffer tank 161 is connected to the inlet bucket 2, so this water can continue to flow back into the inlet bucket 2 for further filtration, thus achieving water saving. Specifically, to further achieve water saving, in another embodiment, a corresponding water pump, water pipe, control valve, and buffer tank 161 can be added to the three-stage filter bucket 7 and the RO water treatment system 8. When replacing the PP cotton in the three-stage filter bucket 7 or the RO membrane in the RO water treatment system 8, the water remaining in the three-stage filter bucket 7 and the RO water treatment system 8 can be buffered in the buffer tank 161 before flowing into the inlet bucket 2.

[0176] Under the action of the dual-axis motor 131, the mounting frame 91, the first motor 93, the filling barrel 53, and the barrel cover 52 gradually move away from the barrel body 51 and move along the annular slide 10. When the filling barrel 53 is completely separated from the barrel body 51, the rotating slide 54 on the filling barrel 53 begins to dock with the locking rod 11. Due to the action of the locking rod 11 and the rotating slide 54, as the filling barrel 53 continues to move, the filling barrel 53 will slowly flip during the movement. During the flipping process, the filter media such as quartz sand filled in the filling barrel 53 will be poured into the collection box 124 and collected. When all the pouring is completed or the collection box 124 is full, the collection box 124 is detached from the support plate 123 by a forklift and pulled away for disposal. Then, the empty collection box 124 is placed back in place.

[0177] Specifically, most of the filter media in the filling tank 53 will fall into the collection box 124 due to gravity. However, there may still be problems such as filter media sticking to the wall or incomplete falling. Therefore, when the filling tank 53 rotates 180 degrees, the monitoring component on the filling tank 53 will respond to the optical fiber on the drive component 17, and the control box will control the first cylinder 177 to extend a preset length. When the first cylinder 177 extends, it drives the second wedge block 178 to move closer to the third slider 175. During the movement, the inclined surface of the second wedge block 178 and the lifting rod 17 2. Contact, gradually raise the lifting rod 172 until the bottom of the groove 1710 on the lifting rod 172 is in close contact with the bottom of the fixed slide rod 173, and the lifting rod 172 is fully raised. When the lifting rod 172 is fully raised, the insert block 1711 is just inserted into the deep part of the slot 153. During the insertion process, the insert block 1711 will contact the inclined surface of the second wedge block 178 and gradually squeeze the two first wedge blocks 1541, gradually shrinking the two first wedge blocks 1541 into the two first slide grooves 1543, and the third spring 1542 is compressed.

[0178] It should be noted that, in order for the groove 1710 to fit smoothly with the bottom of the fixed slide bar 173, the size of the groove 1710 should be larger than the size of the fixed slide bar 173; the size of the slot 153 is larger than the size of the insert block 1711. After the insert block 1711 is inserted into the slot 153 and presses against the two first wedge blocks 1541, it continues to extend and approach the slot 153 to ensure that the subsequent insert block 1711 can drive the hanging plate to move.

[0179] After being fully raised, the side wall of the lifting rod 172 contacts or has a reserved gap with the third slider 175. While the first cylinder 177 continues to extend, the second wedge block 178 still presses against the lifting rod 172. During the movement, the lifting rod 172 will squeeze the third slider 175, causing the third slider 175 to slide along the fixed slide rod 173. Since the other end (left side) of the fixed slide rod 173 is provided with a fixing block 174, the third slider 175 at the other end (left side) is restricted by the fixing block 174 and cannot move. At this time, the third slider 175 on the right side gradually compresses the second spring 176 during the movement. During the specific movement, the lifting rod 172 drives the scraper 152 to move along the direction of the second guide rod 151. During this period, through The bullseye wheels 179 at both ends of the lifting rod 172 achieve rolling friction with the sliding guide 171, which can reduce resistance and prevent jamming. When the first cylinder 177 on the right drives the lifting rod 172 and scraper 152 on the right to complete the extension stroke of the first cylinder 177, the first cylinder 177 on the right is retracted under the control of the control box. At the same time as the first cylinder 177 retracts, it drives the lifting rod 172 and scraper 152 to move in opposite directions. At this time, the third slider 175 also gradually resets under the action of the second spring 176. After all the components that realize the scraping of the right side are reset, the control box drives the left side to scrape the material in the same way. After repeated left and right scraping actions, most of the filter material in the filling tank 53 can be unloaded.

[0180] It should be noted that the full extension stroke of the first cylinder 177 is greater than half the length of the filling barrel 53 to ensure that the material inside the filling barrel 53 can be completely scraped when scraping material on both sides. When scraping material on both sides for the first time, the extension speed of the first cylinder 177 is relatively slow, and then the extension speed will gradually increase until the filter material in the filling barrel 53 is completely or within the preset requirements.

[0181] After unloading is completed, under the control of the control system, the first cylinder 177, the third slider 175, and the lifting rod 172 are reset. The lifting rods 172 on both sides will no longer be raised. When the third slider 175 is fully reset, that is, when the lifting rod 172 is pushed to the top of the initial position, the control box energizes the first electromagnet 1545 and the second electromagnet 1546. The first electromagnet 1545 and the second electromagnet 1546 attract each other. At this time, the third spring 1542 is further compressed, and the two first wedge blocks 1541 no longer clamp the insert block 1711. Since the size of the insertion port is larger than the insert block 1711, the second wedge block 178 no longer supports the lifting rod 172. Under the action of gravity, the lifting rod 172 will move downward along the track of the sliding guide 171.

[0182] Subsequently, when the clock circuit built into the control box reaches the preset time, the second pulling component 14, located above the annular slide 10, pulls the mounting bracket 91 and the filling bucket 53 towards the bucket body 51 in the same driving manner as the first pulling component 13. During this process, the first pulling component 13 will reverse accordingly to adapt to the pulling action of the second pulling component 14. As the filling bucket 53 is pulled back, it is again acted upon by the locking rod 11 and the rotating slide 54, rotating 180 degrees in the opposite direction. At this time, it continues to be pulled by the second pulling component 14, and the rotating slide 54 disengages from the locking rod 11 to restrict it, that is, the filling bucket 53 will not rotate relative to the rod during the subsequent movement. Then, the position detection sensor set on the annular slide 10 detects that the mounting bracket 91 has reached the preset position and stops.

[0183] During the period when the filling tank 53 is stopped, new filter media can be continuously filled into the filling tank 53. The filling method can be manual operation of a forklift or the use of a robot arm or other equipment to fill the filter media into the filling tank 53 one by one. After the filling is completed, the operator restarts the device through the control panel. Under the control of the program set in the control box, the second pulling component 14 pulls the filling tank 53 filled with filter media such as quartz sand, the tank cover 52, the first motor 93, and the mounting bracket 91 again towards the direction of the tank body 51.

[0184] A metal sensing block is installed on the mounting bracket 91. After the position detection sensor detects that the mounting bracket 91 has reached the preset position, the control box controls the motor to rotate and seal the cover 52 to the body 51. At the same time, the control box controls the electric push rod 163 to extend and move the baffle 162 to close the buffer box 161 and prevent impurities from entering the buffer box 161. Then, the control box opens the previously closed valve, thus completing the automatic replacement and filling of filter media in the primary filter tank 5.

[0185] More specifically, during the process of pouring the filter media into the filling tank 53, the moving position of the mounting frame 91 is detected and fed back by the position detection sensor set on the annular slide 10 during the steps of opening the tank cover 52 and separating it from the tank body 51, and the filling tank 53 and the new filter media filling step. The control box controls the start and stop of the first pulling component 13 or the second pulling component 14 according to the feedback signal.

[0186] The structure of the secondary filter tank 6 is the same as that of the primary filter tank 5. Its working principle, unloading method, and filling method are the same as those of the primary filter tank 5. The difference is that a residual chlorine sensor is installed on the water pipe connecting the secondary filter tank 6 and the tertiary filter tank 7. When residual chlorine is detected penetrating the effluent, it is a clear signal that the activated carbon has failed, indicating that the adsorption capacity of the carbon bed has been exhausted. At this time, the control box is triggered to replace the filter media in the secondary filter tank 6.

[0187] It should be noted that when the primary filter cartridge 5 and the secondary filter cartridge 6 are detected to need filter media replacement, under the control of the preset program in the control box, the filter media of the primary filter cartridge 5 will be replaced first. After the filter media of the primary filter cartridge 5 is replaced, the filter media of the secondary filter cartridge 6 will be replaced.

[0188] This invention provides a natural water treatment device that facilitates filter media replacement. By monitoring differential pressure and residual chlorine in real time, the system can accurately determine the failure points of quartz sand and activated carbon filter media and automatically initiate the replacement procedure. This achieves a leap from periodic or experience-based maintenance to condition-based precision maintenance, which not only ensures water quality but also avoids resource waste.

[0189] Secondly, through the actuator consisting of a control box, motor, cylinder, slide rail, etc., the entire process of depressurization, opening the lid, pulling out the bucket, tilting and pouring, mechanical scraping, and resetting and sealing is completed automatically; personnel do not need to enter the container, completely eliminating the safety and health risks caused by working in a confined space, dust exposure, biological contact and high-intensity physical labor.

[0190] Before replacement, the original water in the filter canister is recycled to the inlet, which effectively reduces the water consumption generated during the maintenance process and achieves the water-saving goal.

[0191] Finally, by using "tilting and tilting" and "unidirectional reciprocating mechanical scraping", the filter media, especially the easily caking filter media, is thoroughly removed. This solves the problem of incomplete cleaning and impact on the performance of new filter media in traditional methods, and ensures the recovery effect of the filter unit.

[0192] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, apparatus, article, or method that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, apparatus, article, or method. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or method that includes that element. The above descriptions are merely preferred embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural modifications made based on the content of this specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A natural water treatment device which facilitates replacement of filter media, characterized in that, Includes a base, on which a water inlet tank is provided, and on which a water inlet pipe and a water outlet pipe are provided, and the other end of the water outlet pipe is sequentially connected to a primary filter tank, a secondary filter tank, a tertiary filter tank, and an RO water treatment system. The primary filter includes a barrel body, a barrel cover, and a filling barrel. The filling barrel is slidably disposed inside the barrel body. One end of the barrel cover is rotatably connected to the filling barrel, and the other end of the barrel cover is connected to a rotating assembly. The rotating assembly is slidably disposed on an annular slide. The annular slide is provided in the direction of the filling barrel's extension, and the annular slide is connected to the base. The outer wall of the filling barrel is provided with a rotating groove, and a locking rod is provided on the annular slide; the locking rod is adapted to the rotating groove. A collecting component is provided on the base below the annular slide, a first pulling component is provided below the collecting component, and a second pulling component is provided on the annular slide. The first pulling component and the second pulling component are connected to the rotating component. The filling bucket is provided with a scraping component, and a driving component for driving the scraping component to move is provided above the collecting component; The scraping assembly includes a second guide rod, a scraper, a telescopic assembly, and a monitoring assembly. The filling barrel is provided with a second guide rod inside, and the scraper is slidably connected to the second guide rod. The scraper is provided at both ends of the filling barrel. The scraper has a slot, and the telescopic component is slidably disposed in the slot. The telescopic component includes a first wedge block and a third spring. The two side walls of the slot have symmetrical first grooves, and the first wedge block is disposed in the first groove. One end of the third spring is connected to the first wedge block, and the other end of the third spring is connected to the inner wall of the first groove. The first chute forms a semi-open chute and a closed chamber through a non-magnetic partition. A first electromagnet is embedded in the first wedge block, and a second electromagnet is provided in the closed chamber. The filling barrel has a mounting hole on one side near the slot, and the monitoring component is installed in the mounting hole. The mounting hole forms a sealed space with the scraper through a transparent sheet. The rotating component, the driving component, the first pulling component, and the second pulling component are electrically connected to the control box.

2. The natural water treatment device with easy filter media replacement according to claim 1, characterized in that, It also includes a buffer component, which is provided at the bottom of both the primary filter tank and the secondary filter tank. The buffer component is used to collect the water after the primary filter tank and the secondary filter tank are opened. The buffer component includes a buffer tank, a baffle and an electric push rod. The baffle is slidably provided on the buffer tank and is connected to the output end of the electric push rod.

3. A natural water treatment device with easily replaceable filter media according to claim 1, characterized in that, The rotating assembly includes a mounting bracket, a second slider, a first motor, an annular slide rail, and rollers; The first motor is mounted on the mounting frame, and the output end of the first motor is connected to the bucket lid. The mounting bracket is provided with an annular slide rail at one end near the output shaft of the first motor, and a plurality of first sliders are provided on the bucket cover, the plurality of first sliders being rotatably connected to the annular slide rail; The mounting bracket is provided with the second slider, which is slidably connected to the annular slide rail. The mounting bracket is provided with rollers on its left and right sides, and the rollers are slidably connected to the annular slide.

4. A natural water treatment device with easily replaceable filter media according to claim 1, characterized in that, The first pulling assembly includes a dual-axis motor, a first winding wheel, a guide frame, a first guide rod, a first spring, a movable pulley, a first pull rope, and a second pull rope; The base is provided with the dual-axis motor, and the two output ends of the dual-axis motor are respectively provided with two first winding wheels; The base is provided with the guide frame, the guide frame is provided with a fixed pulley group and a first guide rod, the movable pulley is slidably connected to the guide frame through a bearing seat, and the two ends of the bearing seat are provided with sliding plates, the sliding plates being slidably connected to the first guide rod; The first guide rod is provided with the first spring, one end of the first spring is connected to the sliding plate, and the other end of the first spring is connected to the guide frame; One end of the first pull rope is connected to the sliding plate, and the other end of the first pull rope is connected to the first winding wheel; One end of the second pull rope is connected to the rotating assembly, and the other end of the second pull rope passes through a fixed pulley group and a movable pulley in sequence and is connected to the guide frame.

5. A natural water treatment device with easily replaceable filter media according to claim 1, characterized in that, The drive assembly includes a sliding guide, a lifting rod, an insert block, a fixed slide rod, a fixed block, a third slider, a second spring, a first cylinder, a second wedge block, and a bullseye wheel; The base is provided with two support frames, and the two support frames are provided with sliding guide frames. Two fixed slide rods are provided between the two sliding guide frames. Fixed blocks are provided at both ends of the fixed slide rods. Two third sliders are slidably arranged on the fixed slide rods between the two fixed blocks. The second spring is provided between the two third sliders. The first cylinder is provided at one end of the support frame away from the third slider, and the output end of the first cylinder is connected to the second wedge block. The lifting rod is provided with bullseye wheels at both ends, and the bullseye wheels are slidably connected to the sliding guide. The lifting rod is located at the bottom of the fixed slide rod, and a groove is provided on the lifting rod. The size of the groove is adapted to the size of the fixed slide rod.

6. A natural water treatment device with easily replaceable filter media according to claim 1, characterized in that, The collection assembly includes a support rod, a fourth spring, a support plate, and a collection box; The base is provided with the support rod, the support rod is sleeved with the fourth spring, the support plate is slidably connected to the support rod, the fourth spring is connected between the support plate and the base, and the collection box is provided on the support plate.

7. A natural water treatment device with easily replaceable filter media according to claim 1, characterized in that, It also includes a control box, a booster pump, a first detection component, and a second detection component; The output end of the three-stage filter tank is connected to the inlet end of the RO water treatment system through a first water pipe, and the booster pump is installed on the first water pipe. A second water pipe is provided between the primary filter tank and the secondary filter tank, and the first detection component is provided on the second water pipe; A third water pipe is provided between the secondary filter barrel and the tertiary filter barrel, and the second detection component is provided on the third water pipe; The booster pump, the first detection component, the second detection component, and the control box are electrically connected.

8. A method for replacing filter media in a natural water treatment device, applicable to the natural water treatment device for easy filter media replacement as described in any one of claims 1-7, characterized in that... Includes the following steps: The first and second detection components are used to detect the water flowing out of the primary and secondary filter tanks and then the results are fed back to the control box. The control box determines that the filter media of the corresponding filter canister is ineffective or clogged, and at the same time depressurizes the target filter canister and simultaneously activates the buffer component to collect the residual water in the target filter canister. The lid is driven to rotate relative to the barrel body to unlock by a rotating component. Then, the rotating component, the lid and the filling barrel are moved away from the barrel body along the annular slide by the first and second pulling components, so that the filling barrel is completely separated from the barrel body. As the filling barrel moves on the annular slide, the locking rod on the annular slide cooperates with the rotating groove on the outer wall of the filling barrel, causing the filling barrel to gradually rotate, so that the exhausted filter material inside the filling barrel falls into the collection assembly below under the action of gravity; When the filling barrel is flipped to the preset angle, the monitoring component is triggered to start the drive component. The drive component drives the scraping component to move back and forth along the guide direction inside the filling barrel, scraping off the residual filter material attached to the inner wall of the filling barrel. The residual filter material falls into the collection component. After the scraping and cleaning is completed, the second pulling component, in conjunction with the first pulling component, drives the filling barrel to move along the annular slide towards the barrel body. During the movement, the locking rod and the rotating slide groove work in opposite directions to cause the filling barrel to flip and reset. New filter media is then filled into the reset filling barrel, and the buffer component is closed after filling is completed. Once the filling tank is moved to the preset installation position, the rotating component drives the tank cover to rotate relative to the tank body, achieving a sealed connection between the tank cover and the tank body; the water inlet passage and the passage between the target filter tank and the upstream and downstream filter structures are reopened, restoring the filtration operation of the device.

9. A method for replacing filter media in a natural water treatment device according to claim 8, characterized in that, The specific scraping steps of the scraping component after the filling barrel is flipped to the preset angle are as follows: The control box controls the extension of the first cylinder in the drive assembly, which pushes the second wedge block to move; the inclined surface of the second wedge block contacts the lifting rod, raising the lifting rod so that the insert on the lifting rod is inserted into the slot on the scraper. The control box controls the first cylinder to extend further, pushing the lifting rod. The lifting rod drives the scraper to move along the second guide rod to scrape the material inside the filling barrel. After the scraping stroke on one side is completed, the first cylinder retracts and the scraper is reset by the action of the second spring; the control box controls the drive assembly on the other side to perform the same scraping steps, and scrapes repeatedly by alternating left and right.

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