A portable emergency activated carbon water purification device

Abstract

This utility model relates to the field of water purification equipment, specifically a portable emergency activated carbon water purification device, comprising: a water purification tank, a primary filtration mechanism fixedly connected to one side of the top of the water purification tank, a filter cover fixedly installed inside the primary filtration mechanism, and multiple sets of scrapers rotatably connected inside the filter cover; the inner wall of the water purification tank is provided with multiple detachable filter layers from top to bottom. Through the primary filtration mechanism, raw water enters the filter cylinder and undergoes gravity sedimentation in the annular gap between the inlet cover and the inner wall of the filter cylinder, achieving the sedimentation and separation of large particulate impurities. The pulverizing blades driven by the drive motor can pulverize larger impurities such as plastic fragments and fibrous materials that are not intercepted by the filter plates, reducing the possibility of clogging the subsequent filtration system; simultaneously, the rotating shaft drives the scrapers to move in a circular motion along the inner side wall of the filter cover, continuously scraping off attached impurities, which are then discharged through a drain pipe.

Description

Technical Field

[0001] This utility model belongs to the field of water purification equipment, specifically relating to a portable emergency activated carbon water purification device. Background Technology

[0002] The demand for portable water purification equipment is becoming increasingly prominent in emergency rescue, field operations, and temporary water supply scenarios.

[0003] Existing emergency water purification devices mostly use a single filter to intercept impurities. However, when faced with complex water quality containing plastic fragments, fibrous materials, etc., the filter is easily clogged by large particles of impurities and lacks a self-cleaning mechanism, resulting in a significant decrease in filtration efficiency over time.

[0004] Conventional activated carbon filtration systems mostly use a fixed structure, resulting in short filter bed replacement cycles and difficulty in regeneration. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing emergency water purification devices, such as the single filter screen being easily clogged by large particles of impurities in complex water quality and the lack of a self-cleaning mechanism, and the frequent replacement of conventional activated carbon filter layers due to their fixed structure. This invention aims to realize a portable emergency activated carbon water purification device.

[0006] To achieve the above-mentioned objectives, the technical solution of this utility model is: a portable emergency activated carbon water purification device, including a water purification tank, a primary filtration mechanism fixedly connected to one side of the top of the water purification tank, a filter cover fixedly installed inside the primary filtration mechanism, multiple sets of scrapers rotatably connected inside the filter cover, and multiple detachable filter layers arranged sequentially from top to bottom on the inner wall of the water purification tank.

[0007] In the aforementioned portable emergency activated carbon water purification device, the filter layer is an activated carbon filter layer, the interior of the water purification tank has a groove for sliding the filter layer in the vertical direction, one side wall of the water purification tank has a through hole for the filter layer to pass through, one end of the filter layer passes through the through hole and is fixedly connected to a baffle, and the contact surface between the baffle and the water purification tank is provided with an annular sealing gasket.

[0008] In the aforementioned portable emergency activated carbon water purification device, the filter layer comprises, from top to bottom, a large-pore activated carbon fiber cloth layer, a coconut shell activated carbon granule layer, a silver-loaded activated carbon fiber felt layer, and a high-density activated carbon rod layer.

[0009] In the aforementioned portable emergency activated carbon water purification device, the silver ion loading of the silver-loaded activated carbon fiber felt layer is 0.5-1.2wt%, and the porosity of the high-density activated carbon rod layer is ≥85%.

[0010] In the aforementioned portable emergency activated carbon water purification device, the primary filtration mechanism includes a filter cylinder, a drive motor, a filter cover, a water outlet connection pipe, a pulverizing blade, and a scraper. A water inlet pipe is fixedly connected to the top of the side wall of the filter cylinder. A water inlet cover is fixedly installed on the inner top wall of the filter cover by bolts. The bottom outer circumference of the water inlet cover forms an annular gap with the inner wall of the filter cylinder. A filter plate is provided at the bottom of the water inlet cover.

[0011] In the aforementioned portable emergency activated carbon water purification device, a cover plate is fixedly connected to the top of the filter cylinder by bolts. The output shaft of the drive motor passes through the cover plate and is fixedly connected to a rotating shaft. Crushing blades are evenly distributed and fixed on the outer circumferential surface of the rotating shaft above the filter plate. A connecting cylinder is fixedly connected to the outer circumferential surface of the rotating shaft below the filter plate. Scrapers with an inclination angle of 30°-45° are fixedly arranged in a circumferential array on the outer circumferential surface of the connecting cylinder.

[0012] In the aforementioned portable emergency activated carbon water purification device, the upper half of the filter cover is provided with filter holes, and the lower half is a sealed structure. The gap between the outer edge of the scraper and the inner wall of the filter cover is 0.5-1mm. A drain pipe is fixedly connected to the bottom of the filter cylinder, and the drain pipe is equipped with a solenoid valve.

[0013] In the aforementioned portable emergency activated carbon water purification device, the top of the side wall of the water purification tank is provided with a water inlet, the bottom of the water purification tank is provided with a water outlet pipe, the bottom of the side wall of the filter cartridge is connected to the water inlet via a pipe, and the water outlet pipe is provided with a flow regulating valve and a TDS detection interface.

[0014] Compared with the prior art, the portable emergency activated carbon water purification device of this utility model has at least the following beneficial effects:

[0015] 1. This portable emergency activated carbon water purification device utilizes a primary filtration mechanism. After raw water enters the filter cartridge, gravity sedimentation occurs in the annular gap between the inlet hood and the inner wall of the filter cartridge, achieving the separation of large particulate impurities. The pulverizing blades driven by the motor can pulverize larger impurities such as plastic fragments and fibrous materials that are not intercepted by the filter plate, reducing the possibility of clogging subsequent filtration systems. Simultaneously, the rotating shaft drives the scraper to move circumferentially along the inner wall of the filter cover, continuously scraping away attached impurities, which are then discharged through the drain pipe. This reduces the occurrence of filter cover clogging and helps maintain filtration efficiency for a longer period.

[0016] 2. A multi-layered, progressive activated carbon filter structure is adopted, with each layer focusing on a specific function. The top layer, large-pore activated carbon fiber cloth, intercepts larger particulate impurities; the coconut shell activated carbon granule layer adsorbs residual chlorine and organic pollutants; the silver-impregnated activated carbon fiber felt layer possesses antibacterial properties, inhibiting biofilm formation; and the high-density activated carbon rods retain fine particles. Furthermore, the filter layers employ a detachable slotted structure, facilitating periodic activation and regeneration of the coconut shell activated carbon granule layer. This significantly improves upon the inconvenience of filter layer replacement and regeneration in conventional activated carbon filtration systems, contributing to extended equipment lifespan and enhanced filtration efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the main view of the filter cartridge of this utility model;

[0020] Figure 4 This is a cross-sectional schematic diagram of the filter cartridge of this utility model;

[0021] Figure 5 This is a schematic diagram of the scraper blade of this utility model.

[0022] In the diagram: 1. Water tank; 2. Baffle; 3. Water outlet pipe;

[0023] 4. Primary filtration mechanism; 401. Filter cartridge; 402. Drive motor; 403. Filter cover; 404. Inlet pipe; 405. Outlet connection pipe; 406. Filter plate; 407. Crusher; 408. Drain pipe; 409. Rotating shaft; 4010. Connecting cylinder; 4011. Scraper; 4012. Inlet cover;

[0024] 5. Filter layer; 6. Water inlet connection. Detailed Implementation

[0025] The portable emergency activated carbon water purification device of this utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] This embodiment discloses a portable emergency activated carbon water purification device. Existing emergency water purification devices have single filters that are easily clogged by large particles in complex water quality and lack a self-cleaning mechanism. Furthermore, conventional activated carbon filter layers suffer from frequent replacement due to their fixed structure. Referring to… Figures 1-5 It mainly includes a water purification tank 1, a primary filtration mechanism 4 is fixedly connected to the top side of the water purification tank 1, a filter cover 403 is fixedly installed inside the primary filtration mechanism 4, and multiple sets of scrapers 4011 are rotatably connected inside the filter cover 403. The inner wall of the water purification tank 1 is provided with multiple layers of detachable filter layers 5 from top to bottom.

[0028] The top of the water purification tank 1 is rigidly connected to the primary filtration mechanism 4 via a flange-type quick-connect interface. Inside the filtration mechanism is a conical filter cover 403 assembly. This filter cover 403 is fixed to the center of the inner cavity of the filter cylinder 401 using a circumferential positioning structure, and its outer edge forms an annular flow channel with the inner wall of the filter cylinder 401. A rotating scraper 4011 assembly is axially supported within the inner cavity of the filter cover 403 via a bearing assembly. The scraper 4011 assembly transmits power to an external drive device via a mechanical transmission mechanism, and its circumferential motion trajectory maintains a dynamic sealing fit with the inner wall of the filter cover 403. Multiple filter layers 5 are vertically arranged on the inner wall of the water purification tank 1, which are quickly installed and removed via a pull-out sliding rail structure. Each filter layer 5 adopts a staggered flow layout design, forming a progressive filtration gradient from top to bottom. The top inlet is connected to the outlet pipe 3 of the primary filtration unit via a flexible hose. After preliminary treatment, the water enters the water purification tank 1 tangentially, forming a spiral downward flow within the tank, sequentially penetrating each layer of filter media to achieve multi-stage purification.

[0029] Reference Figure 1 and Figure 2 The filter layer 5 is an activated carbon filter layer. A groove for sliding the filter layer 5 is vertically formed inside the water purification tank 1. A through hole for the filter layer 5 to pass through is provided on one side wall of the water purification tank 1. One end of the filter layer 5 passes through the through hole and is fixedly connected to a baffle 2. An annular sealing gasket is provided on the contact surface between the baffle 2 and the water purification tank 1. The filter layer 5 includes, from top to bottom, a large-pore activated carbon fiber cloth layer, a coconut shell activated carbon granule layer, a silver-loaded activated carbon fiber felt layer, and a high-density activated carbon rod layer. The silver ion loading of the silver-loaded activated carbon fiber felt layer is 0.5-1.2 wt%, and the porosity of the high-density activated carbon rod layer is ≥85%.

[0030] Four sets of T-shaped guide rail assemblies are arranged along the axial direction on the inner wall of the water purification tank 1, with each set of guide rails corresponding to a filter layer 5. The filter layer 5 is rigidly connected to the baffle 2 through end flanges. The outer side of the baffle 2 is provided with a circumferential sealing groove, and the annular sealing gasket embedded in the groove is made of elastomer material. A reliable seal with the wall panel of the water purification tank 1 is achieved through axial pre-tightening force. Each filter layer 5 is arranged vertically from top to bottom according to functional gradient. The top large-pore fiber cloth layer serves as the primary filtration unit. Its surface is specially treated to form a three-dimensional mesh structure, which can effectively intercept suspended solids and particulate impurities in the water flow. The middle coconut shell activated carbon layer is filled with granular media, and deep adsorption is achieved through the tortuous flow channels formed by the irregularly shaped media. The lower silver-loaded fiber felt layer is loaded with antibacterial components through ion exchange technology, which inhibits the growth of microorganisms while filtering. The bottom high-density activated carbon rod serves as the terminal filtration unit. It adopts a porous media sintering process to form a micron-level pore structure to ensure that the water quality meets the direct drinking water standards. Each filter layer 5 can be quickly replaced through a pull-out structure. The handle structure on the outside of the baffle 2 makes it easy for operators to disassemble and install with one hand. The lip design of the sealing gasket can automatically compensate for dimensional changes caused by thermal expansion and contraction during equipment operation, ensuring sealing reliability under long-term use.

[0031] The silver-loaded activated carbon fiber felt layer employs a synergistic antibacterial mechanism of ion exchange and physical adsorption: the oxygen-containing functional groups (carboxyl and hydroxyl groups) on the surface of activated carbon undergo a complexation reaction with silver ammonia solution, allowing Ag to be chemically bonded to the fiber surface. The loading is controlled at 0.8-1.0 wt% to avoid excessive ion release. When water flows through, the positively charged Ag adsorbs the negatively charged bacterial cell wall through Coulomb attraction, penetrates the cell membrane, enters the cytoplasm, and binds to the protein sulfhydryl groups (-SH), thus inactivating the enzyme system. The microporous structure of the activated carbon fiber forms an ion diffusion barrier, achieving zero-order release of silver ions through the pore size confinement effect, ensuring a continuous antibacterial concentration of 0.02-0.05 mg / L throughout the 12-month service life. ++

[0032] Reference Figures 1-5 The primary filtration mechanism 4 includes a filter cylinder 401, a drive motor 402, a filter cover 403, a water outlet connection pipe 405, a pulverizing blade 407, and a scraper 4011. A water inlet pipe 404 is fixedly connected to the top of the side wall of the filter cylinder 401. A water inlet cover 4012 is fixedly installed on the inner top wall of the filter cover 403 by bolts. The bottom outer circumference of the water inlet cover 4012 forms an annular gap with the inner wall of the filter cylinder 401. A filter plate 406 is provided at the bottom of the water inlet cover 4012.

[0033] A cover plate is bolted to the top of the filter cartridge 401. The output shaft of the drive motor 402 passes through the cover plate 4014 and is fixedly connected to a rotating shaft 409. Crushing blades 407 are evenly distributed and fixed on the outer circumferential surface of the rotating shaft 409 above the filter plate 406. A connecting cylinder 4010 is fixedly connected to the outer circumferential surface of the rotating shaft 409 below the filter plate 406. Scrapers 4011 with an inclination angle of 30°-45° are fixedly arranged in a circumferential array on the outer circumferential surface of the connecting cylinder 4010. The upper half of the filter cover 403 has filter holes, and the lower half is a sealed structure. The gap between the outer edge of the scraper 4011 and the inner wall of the filter cover 403 is 0.5-1mm. A drain pipe 408 is fixedly connected to the bottom of the filter cartridge 401, and the drain pipe 408 is equipped with a solenoid valve.

[0034] The water tank 1 has an inlet port 6 on the top of its side wall and an outlet pipe 3 at the bottom. The bottom of the filter cartridge 401 is connected to the inlet port 6 via a pipe. The outlet pipe 3 is equipped with a flow regulating valve and a TDS detection interface.

[0035] The annular settling zone formed by the outer edge of the inlet hood 4012 and the inner wall of the filter cylinder 401 enables uniform water flow and pre-settling of large particles. This area can be cleaned periodically by opening the cover plate on the filter cylinder 401. The stepped filter plate 406 at the bottom of the inlet hood 4012 is concentrically fitted with the rotating shaft 409 via a variable diameter structure. The output shaft of the drive motor 402 extends into the inner cavity of the filter cylinder 401 via a mechanical seal assembly. The pulverizing blades 407 on the upper section of the rotating shaft 409 feature a streamlined blade design, pulverizing unintercepted impurities through high-speed rotation. The connecting cylinder 4010 connected to the lower section of the rotating shaft 409 is rigidly connected to the scraper blade 4011 assembly via a keyway structure. The scraper blade 4011's inclination angle matches the taper of the filter hood 403, forming a dynamic sealing band during rotation to effectively prevent scaling on the filter screen surface. The upper part of the filter cover 403 features a slit-type filter hole array evenly distributed along the circumference, which is staggered with the movement trajectory of the scraper 4011 to ensure efficient impurity removal. The drain pipe 408 is located at the bottom conical section of the filter cylinder 401, and is linked to the PLC control system via a solenoid valve to achieve dual-mode operation: timed drain and level-triggered emergency drain. The clean water tank 1 and the primary filtration mechanism 4 form a closed-loop water circuit through a quick-connect pipe. The guide vanes at the inlet 6 direct the water flow tangentially into the tank, forming a spiral flow pattern with the built-in baffle assembly, effectively extending the filtration path and improving filtration efficiency. The flow regulating valves on the outlet pipes 3 employ a proportional throttling structure, forming feedback control with the TDS detection interface to ensure stable effluent quality.

[0036] The TDS detection interface is an integrated water quality monitoring component. Its core functions include: real-time conductivity detection: acquiring the conductivity signal of the effluent flow through a dual-probe sensor, and calculating the TDS value based on the linear relationship between ion mobility and conductivity; multi-parameter linkage display: establishing data communication with the equipment control panel to synchronously display water temperature, flow rate, and TDS value; triggering a yellow warning light when TDS > 50 ppm, and activating a red alarm and automatically closing the effluent solenoid valve when TDS > 100 ppm; and adaptive adjustment function: forming a closed-loop control system with the flow regulating valve. When the TDS value shows an upward trend, the stepper motor drives the valve core to reduce the flow cross-section, prolonging the contact time of the water flow in the filter layer, ensuring dynamic stability of the effluent water quality.

[0037] The working principle of this portable emergency activated carbon water purification device is as follows: raw water first enters the filter cylinder 401 through the water inlet pipe 404, and then flows into the annular gap between the water inlet cover 4012 and the inner wall of the filter cylinder 401. That is, the annular area where the water inlet cover 4012 and the filter cylinder 401 do not directly contact each other. This gap is designed to slow down the water flow speed, and large particles of impurities settle to the bottom of the gap through natural sedimentation, thus achieving preliminary gravity separation.

[0038] Water that has settled slowly overflows into the inlet shroud 4012. Drive motor 402 drives two sets of functional components to operate synchronously via rotating shaft 409.

[0039] Above the filter plate 406: The rotating shredder 407 crushes larger impurities, such as plastic fragments and fibrous materials, that are not intercepted by the filter plate 406 into tiny particles, preventing blockage of the subsequent filtration system.

[0040] Below the filter plate 406: The rotating shaft 409 drives the connecting cylinder 4010 to rotate, causing the inclined scraper 4011 to move in a circular motion along the inner wall of the filter cover 403. The scraper 4011 continuously scrapes away impurities adhering to the inner wall of the filter cover 403 and discharges them through the drain pipe 408, ensuring that the filter cover 403 maintains its permeability for a long time. After filtering for a certain period of time, the solenoid valve on the drain pipe 408 is opened to discharge the dirt, and the filtered water flows out through the outlet connecting pipe 405.

[0041] The purified water, after being treated by the primary filtration unit 4, is delivered to the inlet connection 6 at the top of the water purification tank 1 through the outlet connection pipe 405 and the hose. After entering the water purification tank 1, the water first comes into contact with the uppermost activated carbon filter layer 5, which is made of large-pore activated carbon fiber cloth, mainly intercepting particulate impurities with a diameter >50μm and fine suspended solids that have not been completely crushed.

[0042] Water flows vertically through a three-layer progressive filtration structure under the action of gravity: The second layer is a coconut shell activated carbon granule layer with a particle size of 1.5-2.0mm. It removes residual chlorine, organic pollutants and odorous substances in the water through van der Waals adsorption. This layer is designed with a detachable slot structure for easy periodic activation and regeneration.

[0043] The third layer: silver-loaded activated carbon fiber felt layer, silver ion slow-release technology achieves continuous antibacterial effect, effectively inhibiting the formation of biofilm by bacteria on the filter layer surface;

[0044] The fourth layer consists of high-density activated carbon rods with a porosity of >85%, which trap fine particles of 0.5-5μm through capillary coagulation, and a guide channel is set at the end to ensure uniform water flow distribution.

[0045] The purified water is output through the outlet pipe 3 at the bottom of the water tank 1. This pipe is equipped with a flow regulating valve and a TDS detection interface. The drain pipe 408 of the primary filtration mechanism 4 adopts a timed automatic discharge control: the solenoid valve is in the default closed state, and the discharge program is started when the sediment height in the filter cartridge 401 reaches the set liquid level.

[0046] The sewage discharge cycle lasts 15-20 seconds. The PLC controller realizes the timing linkage between the reverse rotation of the 407 crusher and the opening of the sewage discharge valve, and uses the water vortex effect to enhance the sewage discharge efficiency.

[0047] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0048] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0049] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A portable emergency activated carbon water purification device, characterized in that: The water purification tank (1) includes a primary filtration mechanism (4) fixedly connected to one side of the top of the water purification tank (1). A filter cover (403) is fixedly installed inside the primary filtration mechanism (4). Multiple sets of scrapers (4011) are rotatably connected inside the filter cover (403). Multiple detachable filter layers (5) are arranged on the inner wall of the water purification tank (1) from top to bottom.

2. The portable emergency activated carbon water purification device according to claim 1, characterized in that: The filter layer (5) is an activated carbon filter layer. The interior of the water purification tank (1) has a groove for sliding of the filter layer (5) in the vertical direction. One side wall of the water purification tank (1) has a through hole for the filter layer (5) to pass through. One end of the filter layer (5) passes through the through hole and is fixedly connected to a baffle (2). The contact surface between the baffle (2) and the water purification tank (1) is provided with an annular sealing gasket.

3. The portable emergency activated carbon water purification device according to claim 1, characterized in that: The filter layer (5) includes, from top to bottom, a large-pore activated carbon fiber cloth layer, a coconut shell activated carbon particle layer, a silver-loaded activated carbon fiber felt layer, and a high-density activated carbon rod layer.

4. The portable emergency activated carbon water purification device according to claim 3, characterized in that: The silver ion loading of the silver-loaded activated carbon fiber felt layer is 0.5-1.2 wt%, and the porosity of the high-density activated carbon rod layer is ≥85%.

5. The portable emergency activated carbon water purification device according to claim 1, characterized in that: The primary filtration mechanism (4) includes a filter cylinder (401), a drive motor (402), a filter cover (403), a water outlet connection pipe (405), a pulverizing blade (407), and a scraper (4011). A water inlet pipe (404) is fixedly connected to the top of the side wall of the filter cylinder (401). A water inlet cover (4012) is fixedly provided on the inner top wall of the filter cover (403) by bolts. The bottom outer circumference of the water inlet cover (4012) forms an annular gap with the inner wall of the filter cylinder (401). A filter plate (406) is provided at the bottom of the water inlet cover (4012).

6. The portable emergency activated carbon water purification device according to claim 5, characterized in that: The top of the filter cylinder (401) is fixedly connected to a cover plate by bolts. The output shaft of the drive motor (402) passes through the cover plate and is fixedly connected to a rotating shaft (409). The rotating shaft (409) is evenly fixedly provided with crushing blades (407) on the outer circumferential surface above the filter plate (406). The rotating shaft (409) is fixedly connected to a connecting cylinder (4010) on the outer circumferential surface below the filter plate (406). The connecting cylinder (4010) is fixedly provided with scraper blades (4011) with an inclination angle of 30°-45° in a circumferential array on the outer circumferential surface.

7. The portable emergency activated carbon water purification device according to claim 5, characterized in that: The upper half of the filter cover (403) is provided with filter holes, and the lower half is a sealed structure. The gap between the outer edge of the scraper (4011) and the inner wall of the filter cover (403) is 0.5-1mm. The bottom of the filter cylinder (401) is fixedly connected to a drain pipe (408), and the drain pipe (408) is provided with a solenoid valve.

8. The portable emergency activated carbon water purification device according to claim 5, characterized in that: The water purification tank (1) has an inlet port (6) on the top of its side wall and an outlet pipe (3) at the bottom. The bottom of the filter cylinder (401) is connected to the inlet port (6) via a pipe. The outlet pipe (3) is equipped with a flow regulating valve and a TDS detection interface.

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