Water purification device and water purification filter element

Abstract

A water purifying tank is divided into a settling zone and a treatment zone by a partition plate, the settling zone and the treatment zone are communicated with each other through a water guide pipe, a first closing plate is slidably connected into the settling zone and can close the water guide pipe, and a chemical feeding cylinder is arranged at the top end of the water purifying tank and is communicated with the settling zone; the driving mechanism is arranged on the water purifying tank in a sliding manner and can intermittently drive the precipitation assembly to lift, and the first sealing plate can be driven to lift through lifting of the precipitation assembly; a slag removing opening is formed in the settling area, and the slag collecting box is arranged on the water purifying box and is communicated with the slag removing opening; the second sealing assembly is slidably arranged on the water purification tank and connected with the precipitation assembly, and the second sealing assembly can seal the slag removal opening; and when the precipitation assembly is lifted to the vertex, the slag pushing assembly can abut against the precipitation assembly, and the slag pushing assembly is made to move towards the slag collecting box. The outer cylinder is rotatably arranged in the treatment area and faces the water guide pipe. According to the water purification device and the water purification filter element, the outflow of sediments during drainage can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and specifically relates to a water purification device and a water purification filter element. Background Art

[0002] Sewage treatment is a process of purifying sewage to meet the water quality requirements for discharging into a certain water body or reusing it. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, and catering, and is also increasingly entering the daily lives of ordinary people.

[0003] Existing sewage treatment generally involves factories treating acidic and alkaline sewage generated in production and manufacturing, which contains a large amount of silt and sand. Existing sewage treatment equipment cannot be targeted for treatment. To solve such problems, relevant technical personnel have designed a water purification device as shown in CN112499804A. However, when cleaning the sediment in this device, it is necessary to first drain the sewage. Inevitably, some sediment will flow out with the drained water, that is, it will be discharged with the sewage, which will inevitably affect the next water purification effect. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a water purification device to solve the technical problem that sediment is likely to flow out together during the drainage process in the sedimentation area mentioned in the above background art.

[0005] To achieve the aforementioned invention purpose, the technical solutions adopted by the present invention include: A water purification device, comprising a water purification tank, a partition board, a water guide pipe, a medicine feeding cylinder, a first closing board, a sedimentation component, a driving mechanism, a slag collection tank, a second closing component, a slag pushing component, and an outer cylinder; The partition board is arranged inside the water purification tank. The partition board divides the water purification tank into a sedimentation area and a treatment area, and they are interconnected through the water guide pipe. The first closing board is slidably connected to the sedimentation area in a liftable manner and can close the opening of the water guide pipe facing the sedimentation area. The medicine feeding cylinder is arranged at the top of the water purification tank and is connected to the sedimentation area; The sedimentation component is inserted into the sedimentation area in a liftable manner. The driving mechanism is slidably arranged on the water purification tank and is connected to the sedimentation component. The driving component can intermittently drive the sedimentation component to lift and lower. The lifting of the sedimentation component can drive the first closing board to lift; There is a slag removal port in the sedimentation area. The slag collection tank is arranged on the water purification tank and is connected to the slag removal port; The second closing component is slidably arranged on the water purification tank and is connected to the sedimentation component. The second closing component can close the slag removal port; The slag pushing assembly is slidably disposed through the precipitation area. When the precipitation assembly is lifted to the apex, the slag pushing assembly can abut against the precipitation assembly and move the slag pushing assembly towards the slag collection tank.

[0006] The outer cylinder is rotatably disposed in the treatment area and faces the water guide pipe.

[0007] Further, the precipitation assembly includes a mounting frame, a precipitation filter plate, a sliding rod, and a fixing plate; the sliding rod is vertically movably disposed through the water purification tank, one end of the sliding rod located in the precipitation area is connected to the mounting frame, the precipitation filter plate is disposed in the mounting frame, and the sliding and lifting of the mounting frame can drive the first closing plate to slide; the other side of the sliding rod located outside the water purification tank is fixedly connected to the fixing plate, and the driving mechanism can drive the fixing plate to move up and down.

[0008] Further, the driving mechanism includes a driving assembly, a driven assembly, and a transmission assembly; the driving assembly and the transmission assembly are respectively rotatably disposed on the water purification tank, the driving assembly can intermittently drive the driven assembly to rotate, the transmission assembly is slidably disposed on the water purification tank and is connected to the fixing plate, and the driven assembly can drive the transmission assembly to perform linear reciprocating motion.

[0009] Further, the driven assembly includes a driven rotating rod and a sprocket; the driven rotating rod is rotatably connected to the water purification tank and is connected to the transmission assembly, the sprocket is coaxially fixed on the driven rotating rod, and the driving assembly can intermittently drive the sprocket to rotate.

[0010] Further, the driving assembly includes a driving motor, a turntable, a driving rod, and a limiting convex block; the driving motor is disposed on the water purification tank, the turntable is coaxially fixed on the output shaft of the driving motor, the driving rod is eccentrically fixed on the turntable and can drive the sprocket to rotate, and the limiting convex block is coaxially fixed on the turntable and can limit the rotation of the sprocket during the rotation gap.

[0011] Further, the transmission assembly includes a driving rod, a driven rod, a connecting rod, and a sliding plate; the driving rod is fixedly connected to the driven rotating rod, one end of the driven rod is hinged to the driving rod, the other end is hinged to the connecting rod, the connecting rod is fixedly connected to the sliding plate, the sliding plate is slidably connected to the water purification tank and is connected to the fixing plate.

[0012] Further, the slag pushing assembly includes a cylinder and a slag pushing plate; the cylinder is disposed on the water purification tank, the slag pushing plate is fixedly disposed on the output shaft of the cylinder and is located in the precipitation area, the switch of the cylinder is a touch switch, and the lifting of the precipitation assembly can squeeze the touch switch.

[0013] Further, the second closing component includes a second closing plate and a telescopic rod; the second closing plate is slidably inserted through the water purification tank and can close the slag removal port; one end of the telescopic rod is connected to the second closing plate, and the other end is connected to the precipitation component.

[0014] A water purification filter element is applied to any one of the above-mentioned water purification devices. The filter element is detachably arranged in the outer cylinder, and the purification filter element is composed of a cylinder, an activated carbon filter layer, an RO membrane filter layer, and an ultrafiltration membrane layer.

[0015] Compared with the prior art, the advantages of the present invention include: In this application, after the precipitation is completed, the precipitation component is lifted by the driving mechanism, so that the precipitation component is away from the sewage. During the lifting process, the first closing plate is opened, and the sewage below the precipitation component can be discharged to the treatment area, thereby reducing the possibility that the precipitated impurities are carried to the next treatment area when the sewage flows; in addition, the slag removal port can be opened simultaneously after lifting, so that the impurities on the precipitation component can be pushed out of the water purification tank while draining water, without repeatedly opening the water purification tank for slag removal, and at the same time avoiding the possibility of the precipitation component being blocked due to forgetting to remove slag. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is an overall schematic diagram of a water purification device in the present invention; Figure 2 For Figure 1 The enlarged schematic diagram of part A shown; Figure 3 For Figure 1 The sectional schematic diagram of a water purification device shown; Figure 4 For Figure 1 The sectional schematic diagram of another angle of a water purification device shown.

[0018] Reference Signs: Clean water tank 1, sedimentation area 10, slag removal port 101, treatment area 11, partition plate 12, water guide pipe 13, medicine adding cylinder 14, first closing plate 2, sedimentation assembly 3, installation frame 31, sedimentation filter plate 32, sliding rod 33, fixing plate 34, driving mechanism 4, active assembly 41, driving motor 411, turntable 412, driving rod 413, limiting convex block 414, driven assembly 42, driven rotating rod 421, sprocket 422, transmission assembly 43, driving rod 431, driven rod 432, connecting rod 433, sliding plate 434, slag collection box 5, second closing assembly 6, second closing plate 61, telescopic rod 62, slag pushing assembly 7, air cylinder 71, touch switch 711, slag pushing plate 72, outer cylinder 8, filter element 9. Detailed implementation manners

[0019] In view of the deficiencies in the prior art, the inventors of this case have proposed the technical solution of the present invention through long-term research and a large number of practices. The following will further explain the technical solution, its implementation process and principle in combination with the drawings in the embodiments of this application and specific implementation cases.

[0020] It should be noted that the embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and cannot be understood as a limitation to the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the spirit, principle and scope defined by the claims of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0021] In the description of this application, words such as "first", "second", "third" and the like do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "one" do not indicate a quantity limitation, but indicate that there is at least one. Words such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Connection" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0022] In the description of the present application, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, when using position terms such as both sides, outer side, upper and lower, etc., it should be understood that they are only used for easy understanding and description, considering that the structure may be facing other positions.

[0023] In the description of the present application, unless otherwise clearly defined and limited, the technical terms or scientific terms used should have the ordinary meaning understood by those with ordinary skills in the field to which the present application belongs. Terms such as "installation", "connection", "coupling", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or a contact connection or an integral connection; for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0024] The embodiments of the present invention are intended to introduce and illustrate the structural composition of the water purification device and the cooperation relationship between the various component structures. Unless otherwise specified, the dimensions, materials, manufacturing processes, etc. of the components suitable for the water purification device in the embodiments of the present invention can be selected according to specific circumstances, and no special limitations and explanations are made here.

[0025] Furthermore, in order to enable the public to have a better understanding of the present invention, in the following detailed description of the present invention, some specific details are described in detail. Those skilled in the art can fully understand the present invention without the description of these details.

[0026] Please refer to Figures 1-4 , this embodiment provides a water purification device, including a water purification tank 1, a partition plate 12, a water guide pipe 13, a medicine adding cylinder 14, a first closing plate 2, a precipitation assembly 3, a driving mechanism 4, a slag collection tank 5, a second closing assembly 6, a slag pushing assembly 7, and an outer cylinder 8; The partition plate 12 is arranged in the purified water tank 1. The partition plate 12 divides the purified water tank 1 into a sedimentation area 10 and a treatment area 11, and they are interconnected through a water guide pipe 13. The first closing plate 2 is slidably connected to the sedimentation area 10 in a liftable manner and can close the opening of the water guide pipe 13 facing the sedimentation area 10. The medicine adding cylinder 14 is arranged at the top of the purified water tank 1 and communicates with the sedimentation area 10. Specifically, the sedimentation area 10 is above and the treatment area 11 is below. Under the action of gravity and when not lifted by an external force, the first closing plate 2 closes one side of the water guide pipe 13 in the sedimentation area 10. At the same time, when the first closing plate 2 closes one end of the water guide pipe 13, the sedimentation area 10 and the treatment area 11 are not interconnected. The medicine adding cylinder 14 is used to put various water purification agents, mainly flocculants.

[0027] The sedimentation component 3 is slidably arranged in the sedimentation area 10 in a liftable manner. Specifically, one side of the sedimentation component 3 is located at the bottom of the sedimentation area 10, and the other side passes through the top of the purified water tank 1. The driving mechanism 4 is slidably arranged on the purified water tank 1 and is connected to the sedimentation component 3. The driving component can intermittently drive the sedimentation component 3 to lift, and the lifting of the sedimentation component 3 can drive the first closing plate 2 to lift. It should be understood that the sedimentation component 3 can filter the precipitated impurities, that is, the impurities cannot pass through the sedimentation component 3 while the water can pass through. After the driving mechanism 4 drives the sedimentation component 3 to lift, the height position of the sedimentation component 3 can be maintained. After the first closing plate 2 is lifted, the water in the sedimentation area 10 can flow into the treatment area 11 through the water guide pipe 13.

[0028] A slag removal port 101 is arranged in the sedimentation area 10. The slag collection box 5 is arranged on the purified water tank 1 and communicates with the slag removal port 101. The second closing component 6 is slidably arranged on the purified water tank 1 and is connected to the sedimentation component 3. The second closing component 6 can close the slag removal port 101. It should be understood that the second closing component 6 can be lifted along with the lifting of the sedimentation component 3, thereby opening the slag removal port 101.

[0029] The slag pushing component 7 is slidably arranged in the sedimentation area 10. When the sedimentation component 3 is lifted to the top, the slag pushing component 7 can abut against the sedimentation component 3 and move the slag pushing component 7 towards the slag collection box 5. That is, when the sedimentation component 3 is lifted to the top, the slag pushing component 7 pushes the precipitated impurities on the sedimentation component 3 into the slag collection box 5. Since the driving mechanism 4 intermittently drives the sedimentation component 3 to lift, at the highest point, the sedimentation component 3 can maintain this height, giving the slag pushing component 7 enough time to remove the slag.

[0030] The outer cylinder 8 is rotatably arranged in the treatment area 11 and faces the water guide pipe 13. It should be understood that the filter element 9 is arranged in the outer cylinder 8, and the water flow in the water guide pipe 13 causes the outer cylinder 8 to rotate and is filtered through the filter element 9.

[0031] In addition, the sedimentation area 10 and the treatment area 11 are respectively provided with a water inlet pipe and a water outlet pipe. The preferred water inflow volume of the sedimentation area 10 at one time does not exceed the slag removal port 101.

[0032] In this application, after precipitation is completed, the precipitation assembly 3 is lifted by the driving mechanism 4 so that the precipitation assembly 3 is away from the sewage. During the lifting process, the first closing plate 2 is opened, and the sewage below the precipitation assembly 3 can be discharged to the treatment area 11, thereby reducing the possibility that the sewage will carry the precipitated impurities when flowing to the next treatment area 11; in addition, the slag removal port 101 can be opened simultaneously after lifting, so that the impurities on the precipitation assembly 3 can be pushed out of the clean water tank 1 while the water is flowing down, without repeatedly opening the clean water tank 1 for slag removal, and at the same time avoiding the possibility of the precipitation assembly 3 being blocked due to forgetting to remove slag.

[0033] Further, the precipitation assembly 3 includes a mounting frame 31, a precipitation filter plate 32, a sliding rod 33 and a fixing plate 34; the sliding rod 33 is vertically movably penetrated through the clean water tank 1, one end of the sliding rod 33 located in the precipitation area 10 is connected to the mounting frame 31, the precipitation filter plate 32 is arranged in the mounting frame 31, and the sliding and lifting of the mounting frame 31 can drive the first closing plate 2 to slide; one side of the sliding rod 33 located outside the clean water tank 1 is fixedly connected to the fixing plate 34, and the driving mechanism 4 can drive the fixing plate 34 to lift and lower. Preferably, a chute is provided on one side of the precipitation area 10 of the clean water tank 1, and the first closing plate 2 is slidably connected in the chute and is higher than the side surface of the clean water tank 1. The outer side surface of the mounting frame 31 is preferably the same size as or slightly smaller than the cross-sectional size of the precipitation area 10, and preferably a plurality of sliding rods 33 are provided and penetrate through the top surface of the clean water tank 1.

[0034] Further, the driving mechanism 4 includes a driving component 41, a driven component 42 and a transmission component 43; the driving component 41 and the transmission component 43 are respectively rotatably arranged on the clean water tank 1, the driving component 41 can intermittently drive the driven component 42 to rotate, the transmission component 43 is slidably arranged on the clean water tank 1 and is connected to the fixing plate 34, and the driven component 42 can drive the transmission component 43 to perform linear reciprocating motion. It should be understood that the driving component 41 can limit the accidental rotation of the driven component 42 during the rotation gap.

[0035] Further, the driven component 42 includes a driven rotating rod 421 and a sprocket 422; the driven rotating rod 421 is rotatably connected to the clean water tank 1 and is connected to the transmission component 43, the sprocket 422 is coaxially fixedly arranged on the driven rotating rod 421, and the driving component 41 can intermittently drive the sprocket 422 to rotate.

[0036] Further, the driving component 41 includes a driving motor 411, a turntable 412, a driving rod 431413 and a limiting convex block 414; the driving motor 411 is arranged on the clean water tank 1, the turntable 412 is coaxially fixedly arranged on the output shaft of the driving motor 411, the driving rod 431413 is eccentrically fixedly arranged on the turntable 412 and can drive the sprocket 422 to rotate, and the limiting convex block 414 is coaxially fixedly arranged on the turntable 412 and can limit the rotation of the sprocket 422 during the rotation gap. That is, the driving component 41 and the driven component 42 can be approximately regarded as a sprocket 422 mechanism.

[0037] Further, the transmission assembly 43 includes a driving rod 431413, a driven rod 432, a connecting rod 433 and a sliding plate 434; the driving rod 431413 is fixedly connected to the driven rotating rod 421, one end of the driven rod 432 is hinged to the driving rod 431413, the other end is hinged to the connecting rod 433, the connecting rod 433 is fixedly connected to the sliding plate 434, and the sliding plate 434 is slidably connected to the water purification tank 1 and connected to the fixing plate 34. That is, the transmission assembly 43 can be approximately regarded as a crank-slider mechanism.

[0038] Further, the slag pushing assembly 7 includes a cylinder 71 and a slag pushing plate 72; the cylinder 71 is arranged on the water purification tank 1, the slag pushing plate 72 is fixedly arranged on the output shaft of the cylinder 71 and is located in the sedimentation area 10, the switch of the cylinder 71 is a touch switch 711, and the lifting of the sedimentation assembly 3 can squeeze the touch switch 711. Specifically, the fixing plate 34 of the sedimentation assembly 3 can squeeze the touch switch 711. When the touch switch 711 is squeezed, the cylinder 71 extends, and when the fixing plate 34 is away from the cylinder 71 of the clear switch, the cylinder 71 retracts.

[0039] Further, the second closing assembly 6 includes a second closing plate 61 and a telescopic rod 62; the second closing plate 61 is slidably inserted through the water purification tank 1 and can close the slag removal port 101; one end of the telescopic rod 62 is connected to the second closing plate 61, and the other end is connected to the sedimentation assembly 3. Specifically, the telescopic rod 62 is connected to the fixing plate 34. By setting the telescopic switch, the opening time of the second closing plate 61 can be delayed to prevent sewage from flowing out of the slag removal port 101.

[0040] A water purification filter element is applied to any one of the above-mentioned water purification devices. The filter element 9 is detachably arranged in the outer cylinder 8, and the filter element 9 is composed of a cylinder, an activated carbon filter layer, an RO membrane filter layer and an ultrafiltration membrane layer.

[0041] The above-mentioned water purification device and water purification filter element can reduce the outflow of sediment during drainage.

[0042] It should be understood that the above embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can also be made. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A water purification device, characterized in that: It includes a clean water tank, a partition, a water guide pipe, an upper medicine barrel, a first closing plate, a sedimentation component, a driving mechanism, a slag collecting box, a second closing component, a slag pushing component and an outer barrel; The partition is arranged in the clean water tank, and the partition divides the clean water tank into a sedimentation area and a treatment area, which are connected to each other through the water guide pipe. The first closing plate is slidably connected in the sedimentation area and can close the opening of the water guide pipe toward the sedimentation area. The upper medicine barrel is arranged at the top of the clean water tank and is connected to the sedimentation area. The sedimentation assembly can be lifted and lowered in the sedimentation area, the driving mechanism can be slidably arranged on the clean water tank and connected to the sedimentation assembly, the driving assembly can intermittently drive the sedimentation assembly to lift, and the lifting of the sedimentation assembly can drive the first closing plate to lift; The sedimentation area is provided with a slag removal port, the slag collection box is provided on the clean water tank and is connected to the slag removal port; the second sealing component is slidably provided on the clean water tank and is connected to the sedimentation component, and the second sealing component can close the slag removal port; The slag pushing assembly is slidably arranged in the settling area, and when the settling assembly is lifted to the top, the slag pushing assembly can abut against the settling assembly and move the slag pushing assembly toward the slag collecting box; The outer cylinder is rotatably arranged in the processing area and faces the water conduit.

2. A water purification device according to claim 1, characterized in that: The sedimentation assembly includes a mounting frame, a sedimentation filter plate, a sliding rod and a fixed plate; the sliding rod is liftably arranged on the clean water tank, the sliding rod is located at one end of the sedimentation area and is connected to the mounting frame, the sedimentation filter plate is arranged in the mounting frame, and the sliding lifting of the mounting frame can drive the first closing plate to slide; the sliding rod is located on one side outside the clean water tank and is fixedly connected to the fixed plate, and the driving mechanism can drive the fixed plate to rise and fall.

3. A water purification device according to claim 2, characterized in that: The driving mechanism includes an active component, a driven component and a transmission component; the active component and the transmission component are respectively rotatably arranged on the clean water tank, the active component can intermittently drive the driven component to rotate, the transmission component can be slidably arranged on the clean water tank and connected to the fixed plate, and the driven component can drive the transmission component to reciprocate linearly.

4. A water purification device according to claim 3, characterized in that: The driven component includes a driven rotating rod and a groove wheel; the driven rotating rod is rotatably connected to the clean water tank and connected to the transmission component, the groove wheel is coaxially fixed on the driven rotating rod, and the active component can intermittently drive the groove wheel to rotate.

5. A water purification device according to claim 4, characterized in that: The active component includes a driving motor, a turntable, a driving rod and a limiting protrusion; the driving motor is arranged on the clean water tank, the turntable is coaxially fixed on the output shaft of the driving motor, the driving rod is eccentrically fixed on the turntable and can drive the groove wheel to rotate, and the limiting protrusion is coaxially fixed on the turntable and can limit the rotation of the groove wheel in the rotation gap.

6. A water purification device according to claim 5, characterized in that: The transmission assembly includes a driving rod, a driven rod, a connecting rod and a slide plate; the driving rod is fixedly connected to the driven rotating rod, one end of the driven rod is hinged to the driving rod, and the other end is hinged to the connecting rod, the connecting rod is fixedly connected to the slide plate, and the slide plate is slidably connected to the clean water tank and connected to the fixed plate.

7. A water purification device according to claim 6, characterized in that: The slag pushing assembly includes a cylinder and a slag pushing plate; the cylinder is arranged on the clean water tank, the slag pushing plate is fixed on the output shaft of the cylinder and is located in the sedimentation area, the switch of the cylinder is a touch switch, and the lifting of the sedimentation assembly can squeeze the touch switch.

8. A water purification device according to claim 7, characterized in that: The second closing assembly includes a second closing plate and a telescopic rod; the second closing plate can be slidably installed on the clean water tank and can close the slag removal port; one end of the telescopic rod is connected to the second closing plate, and the other end is connected to the sedimentation assembly.

9. A water purification filter element, applied to a water purification device according to any one of claims 1 to 8, characterized in that: The filter element is detachably arranged in the outer cylinder, and the filter element consists of a cylinder, an activated carbon filter layer, an RO membrane filter layer, and an ultrafiltration membrane layer.

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