Reclaimed water filtering system

Abstract

The utility model provides a reclaimed water filtering system. The reclaimed water filtering system comprises a reclaimed water tank, a fiber ball filter, a multi-medium filter and an activated carbon filter which are connected in sequence. The activated carbon filter comprises a tank body, a tank cover, an upper plate frame, a lower plate frame and a plurality of activated carbon filter pipes, the tank cover covers the top of the tank body, the upper plate frame and the lower plate frame are arranged in the tank body, the upper plate frame is located above the lower plate frame, and the two ends of each activated carbon filter pipe penetrate through the upper plate frame and the lower plate frame respectively. And the lower plate frame is also provided with a water outlet. An inner thread is arranged at the joint of the lower plate frame and the activated carbon filter pipe, an outer thread matched with the inner thread is arranged on the lower portion of the activated carbon filter pipe, an annular plate is further arranged on the periphery of the upper portion of the activated carbon filter pipe and located above a hole, used for allowing the activated carbon filter pipe to penetrate through, in the upper plate frame, and the diameter of the annular plate is larger than that of the hole. A cover plate is arranged on the upper plate frame on one side of the hole. According to the invention, high-efficiency filtration of reclaimed water is realized.

Description

Technical Field

[0001] The present application relates to the field of water treatment technology, and in particular to a grey water filtration system. Background Art

[0002] The production of silicon-manganese alloy is a high-temperature smelting process, and the electric furnace equipment must be able to withstand high temperatures above 800°C. Under such high temperature conditions, steel equipment itself cannot withstand it and must be cooled by water. If tap water is used for cooling, the chloride ions in the tap water will corrode the equipment over a long period of operation, which is not conducive to the long-term operation of the equipment. At the same time, the production volume of silicon-manganese alloy is large, and a large amount of water resources need to be introduced. In order to save resources and reduce production costs, reclaimed water is used to cool steel equipment in actual factory production.

[0003] The quality of reclaimed water is between sewage and tap water. It is non-drinking water that meets national standards after purification of urban sewage and wastewater. It can be used within a certain range. It can be used to flush toilets, cars, road greening, watering green spaces, and compensate for boiler water. When reclaimed water is used to cool equipment in silicon-manganese alloy production, it also contains some impurities, which is not conducive to the circulation of reclaimed water in the pipeline. Therefore, it is necessary to filter the reclaimed water through a filtering device. The existing filtering device forms a filter plate by setting the filter material in a plate shape. As the filtration proceeds, more and more impurities are on the filter plate. When the filter plate needs to be replaced, it is difficult to replace due to its large size, and it is necessary to stop the filtration midway to replace the filter plate, which takes a long time and reduces the filtration efficiency of the reclaimed water. Utility Model Content

[0004] The present application provides a grey water filtration system to solve the above-mentioned problems mentioned in the background technology.

[0005] The present application provides a grey water filtration system, comprising: a grey water pool, a fiber ball filter, a multi-media filter and an activated carbon filter connected in sequence, wherein the outlet of the grey water pool is connected to the inlet of the fiber ball filter via a grey water pump.

[0006] The activated carbon filter includes a tank body, a tank cover, an upper plate frame, a lower plate frame and a plurality of activated carbon filter tubes. The tank cover covers the top of the tank body. The upper plate frame and the lower plate frame are arranged in the tank body, and the upper plate frame is located above the lower plate frame. The two ends of the activated carbon filter tube pass through the upper plate frame and the lower plate frame respectively. A drainage port is also provided on the lower plate frame.

[0007] An internal thread is provided at the connection between the lower plate frame and the activated carbon filter tube, an external thread matching the internal thread is provided at the lower part of the activated carbon filter tube, and a ring plate is also provided at the outer periphery of the upper part of the activated carbon filter tube. The ring plate is located above the hole on the upper plate frame for the activated carbon filter tube to pass through, and the diameter of the ring plate is larger than the diameter of the hole. A cover plate is provided on one side of the hole of the upper plate frame.

[0008] A water inlet pipe is arranged on the upper part of the tank body, the water inlet pipe is located above the upper plate frame, and a water outlet pipe is arranged on the bottom of the tank body.

[0009] Optionally, the output end of the water inlet pipe extends horizontally into the interior of the tank body, and water distribution holes are provided on the bottom and side walls of the water inlet pipe.

[0010] Optionally, the activated carbon filter tube includes an inner mesh tube, an outer mesh tube and an activated carbon filter material layer, the outer mesh tube is sleeved outside the inner mesh tube, and the space between the outer mesh tube and the inner mesh tube is the activated carbon filter material layer.

[0011] Optionally, the ring plate is arranged on the outer periphery of the top of the outer network pipe.

[0012] Optionally, the tank cover is composed of two semicircular cover plates, and the side walls of the two semicircular cover plates close to the center of the tank cover are movably connected.

[0013] Optionally, a first handle is movably provided on each of the two semicircular cover plates, and a second handle is movably provided on the ring plate.

[0014] Optionally, supporting feet are arranged around the bottom of the tank body.

[0015] The grey water filtration system provided in this application realizes efficient filtration of grey water and has the following beneficial effects compared with the prior art:

[0016] (1) By filtering the reclaimed water through the fiber ball filter, the multi-media filter and the activated carbon filter for multiple times in sequence, the impurities such as suspended matter, colloidal matter, free matter and the like in the reclaimed water are removed. By placing the activated carbon in the activated carbon filter tube, not only the filtering area of ​​the activated carbon is increased, but also it is conducive to the independent control of a single activated carbon filter tube, so that the replacement of a single activated carbon filter tube is realized, and the operation is more convenient. It is also possible to replace the activated carbon filter tubes one by one without stopping the entire filtration system to replace the filter material, so that the activated carbon filter can filter continuously, which helps to improve the efficiency of reclaimed water filtration. By arranging a ring plate on the outer periphery of the upper part of the activated carbon filter tube, the diameter of the ring plate is larger than the diameter of the hole, so that the activated carbon filter tube will not fall through the upper plate frame, thereby achieving the effect of further fixing the activated carbon filter tube. At the same time, the ring plate can also seal the connection between the activated carbon filter tube and the upper plate frame to prevent the unfiltered reclaimed water from leaking, thereby improving the reclaimed water purification effect.

[0017] (2) The activated carbon filter tube includes an inner mesh tube, an outer mesh tube and an activated carbon filter material layer. The outer mesh tube is sleeved outside the inner mesh tube, and the space between the outer mesh tube and the inner mesh tube is filled with activated carbon to form an activated carbon filter material layer. In this way, after the reclaimed water enters the activated carbon filter tube, the filtration area is the side wall area of ​​the inner mesh tube, which helps to increase the filtration area of ​​the reclaimed water in the activated carbon filter tube and improve the filtration efficiency.

[0018] (3) The tank cover is composed of two semicircular cover plates, and the side walls near the center of the tank cover are movably connected. This arrangement allows the two semicircular cover plates to be opened independently. When replacing the activated carbon filter tube, only the semicircular cover plate at the corresponding position needs to be opened, making the operation more convenient. It can also reduce the escape of gas in the tank body when replacing the activated carbon filter tube, which is conducive to the cleanliness of the operating environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 A schematic diagram of the structure of a grey water filtration system provided in one embodiment of the present application;

[0021] Figure 2 A schematic diagram of the structure of an activated carbon filter provided in one embodiment of the present application;

[0022] Figure 3 A schematic diagram of the connection of an activated carbon filter tube provided in one embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of a water inlet pipe provided in one embodiment of the present application;

[0024] Figure 5 A schematic diagram of the structure of an activated carbon filter tube provided in one embodiment of the present application;

[0025] Figure 6 A schematic diagram of the structure of an activated carbon filter provided in another embodiment of the present application;

[0026] Description of reference numerals:

[0027] 1: grey water pool, 2: fiber ball filter, 3: multi-media filter, 4: activated carbon filter, 6: support leg, 110: grey water pump, 410: tank body, 411: water inlet pipe, 412: water outlet pipe, 413: water distribution hole, 420: tank cover, 421: semicircular cover plate, 422: first handle, 430: upper plate frame, 431: cover plate, 440: lower plate frame, 441: internal thread, 450: activated carbon filter tube, 451: external thread, 452: ring plate, 453: second handle, 510: internal mesh pipe, 520: external mesh pipe, 530: activated carbon filter material layer, 4401: drain outlet. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0029] like Figure 1 , Figure 2 and Figure 3 As shown, the present application provides a grey water filtration system, comprising: a grey water pool 1, a fiber ball filter 2, a multi-media filter 3 and an activated carbon filter 4 connected in sequence, and the outlet of the grey water pool 1 and the inlet of the fiber ball filter 2 are connected via a grey water pump 110.

[0030] The activated carbon filter 4 includes a tank body 410, a tank cover 420, an upper plate frame 430, a lower plate frame 440 and a plurality of activated carbon filter tubes 450. The tank cover 420 covers the top of the tank body 410. The upper plate frame 430 and the lower plate frame 440 are arranged in the tank body 410, and the upper plate frame 430 is located above the lower plate frame 440. The two ends of the activated carbon filter tube 450 pass through the upper plate frame 430 and the lower plate frame 440 respectively. A drain port 4401 is also provided on the lower plate frame 440.

[0031] An internal thread 441 is provided at the connection between the lower plate frame 440 and the activated carbon filter tube 450, and an external thread 451 matching the internal thread 441 is provided at the lower part of the activated carbon filter tube 450. A ring plate 452 is also provided on the outer periphery of the upper part of the activated carbon filter tube 450. The ring plate 452 is located above the hole on the upper plate frame 430 for the activated carbon filter tube 450 to pass through, and the diameter of the ring plate 452 is larger than the diameter of the hole. A cover plate 431 is provided on the upper plate frame 430 on one side of the hole.

[0032] A water inlet pipe 411 is disposed at the upper portion of the tank body 410 , and the water inlet pipe 411 is located above the upper plate frame 430 . A water outlet pipe 412 is disposed at the bottom of the tank body 410 .

[0033] Specifically, the reclaimed water contains impurities such as suspended matter and colloidal matter. If the reclaimed water is used as a cooling medium for cooling the electric furnace in silicon manganese production without further treatment, these impurities will clog the delivery pipeline as the filtration proceeds, reducing the flow of the cooling medium and being detrimental to the cooling of the electric furnace. Therefore, the filtration system provided by the present application is used to filter the impurities in the reclaimed water and then cool the electric furnace.

[0034] The reclaimed water stored in the reclaimed water pool 1 is powered by the reclaimed water pump 110 and sequentially transported to the fiber ball filter 2, the multi-media filter 3 and the activated carbon filter 4 for multiple filtrations to remove suspended matter, colloidal substances, free matter and other impurities in the reclaimed water. First, through the fiber ball filter 2, the fiber ball as a filter material has a low density, good flexibility, compressibility, and a large specific surface area and porosity, which adsorbs and intercepts suspended particles in the water, thereby achieving the purpose of preliminary filtration of suspended particles in the reclaimed water. During filtration, due to pressure, the fiber balls cross each other, forming a loose upper and dense lower filter layer distribution state, which is conducive to improving the filtration efficiency of reclaimed water.

[0035] The multi-media filter 3 is a process of using two or more filter media to pass water with high turbidity through a certain thickness of granular or non-granular materials under a certain pressure, thereby effectively removing suspended impurities and clarifying the water. Common filter materials include quartz sand, anthracite, activated carbon, magnetite, garnet, porous ceramics, manganese sand, plastic balls, etc. In this application, quartz sand, anthracite, and manganese sand are used as filter materials to further remove mud, sand, suspended matter, colloids and other impurities and algae and other organisms in the water.

[0036] The activated carbon filter 4 is filled with activated carbon. The activated carbon has many micropores and a huge specific surface area, and has a strong physical adsorption capacity. It is used to filter free matter, microorganisms, and some heavy metal ions in water, and can effectively reduce the chromaticity of water.

[0037] The activated carbon filter 4 includes a tank body 410, a tank cover 420, an upper plate frame 430, a lower plate frame 440 and a plurality of activated carbon filter tubes 450. The tank body 410 is used to provide a filtering space, and the upper plate frame 430 and the lower plate frame 440 are used to fix the plurality of activated carbon filter tubes 450. The plurality of activated carbon filter tubes 450 are used to filter the water entering the tank body 410 and adsorb suspended matter, colloid and other impurities in the water. The two ends of the activated carbon filter tube 450 pass through the upper plate frame 430 and the lower plate frame 440 respectively. The water enters the tank body 410 from the water inlet pipe 411 and first falls on the upper plate frame 430. The upper plate frame 430 not only fixes the activated carbon filter tube 450, but also distributes the water entering the water, so that the water is first spread on the upper plate frame 430, and then enters the activated carbon filter tube 450 from the top of the activated carbon filter tube 450 for filtration. The grey water flows through the activated carbon filter tube 450, and the impurities are adsorbed and filtered by the activated carbon therein and retained in the activated carbon filter tube 450. The obtained purified water flows out through the side wall of the activated carbon filter tube 450, and flows to the bottom of the tank body 410 through the drain port 4401, and is finally discharged through the outlet pipe 412 and enters subsequent purification equipment, such as grey water softening equipment.

[0038] As the filtration proceeds, more and more impurities are trapped in the activated carbon in the activated carbon filter tube 450. When the activated carbon in the activated carbon filter tube 450 needs to be replaced, the tank cover 420 is opened, and after the activated carbon filter tube 450 is lifted and pulled out of the upper plate frame 430, the cover plate 431 is covered on the upper plate frame 430 for the activated carbon filter tube 450 to pass through the hole to prevent the unfiltered water from leaking through the hole into the space between the upper plate frame 430 and the lower plate frame 440, ensuring that the water can be filtered through the activated carbon filter tube 450, thereby improving the efficiency of water filtration and improving water quality. After the activated carbon filter tube 450 is pulled out, a new activated carbon filter tube 450 is put in again, fixed by the upper plate frame 430 and the lower plate frame 440, and the replacement of the activated carbon filter tube 450 is completed. This arrangement makes the replacement of the activated carbon filter tube 450 shorter and more convenient, thereby improving the filtration efficiency of the water.

[0039] Specific operations for replacing the activated carbon filter tube 450: an internal thread 441 is provided at the connection between the lower plate frame 440 and the activated carbon filter tube 450, and an external thread 451 matching the internal thread 441 is provided at the lower part of the activated carbon filter tube 450. When the activated carbon filter tube 450 is placed inside the tank body 410 and the filtering work can be carried out normally, the external thread 451 at the lower part of the activated carbon filter tube 450 is tightened and matched with the internal thread 441, and the top of the activated carbon filter tube 450 extends out of the upper plate frame 430, so as to fix the activated carbon filter tube 450 and carry out normal filtering work. When the activated carbon filter tube 450 needs to be replaced, the activated carbon filter tube 450 is twisted to loosen the outer thread 451 and the inner thread 441 at the lower part of the activated carbon filter tube 450, so that the activated carbon filter tube 450 is separated from the lower plate frame 440, and then the activated carbon filter tube 450 is lifted up and pulled out. At the same time, the cover plate 431 covers the hole of the upper plate frame 430 for the activated carbon filter tube 450 to pass through under the action of gravity, so as to prevent unfiltered water from leaking through the hole. A new activated carbon filter tube 450 is taken out for installation, and the activated carbon filter tube 450 is replaced.

[0040] At the same time, a ring plate 452 is also provided on the outer periphery of the upper part of the activated carbon filter tube 450, and the diameter of the ring plate 452 is larger than the diameter of the hole on the upper plate frame 430 for the activated carbon filter tube 450 to pass through, so that the activated carbon filter tube 450 will not fall through the upper plate frame 430, thereby further fixing the activated carbon filter tube 450. At the same time, the ring plate 452 can also seal the connection between the activated carbon filter tube 450 and the upper plate frame 430 to prevent the unfiltered grey water from leaking, thereby improving the grey water purification effect.

[0041] By placing the activated carbon in the activated carbon filter tube 450, not only the filtering area of ​​the activated carbon is increased, but also it is conducive to independent control of a single activated carbon filter tube 450, so that the replacement of a single activated carbon filter tube 450 is realized, and the operation is more convenient. It is also possible to replace the activated carbon filter tubes 450 one by one without stopping the entire filtering system to replace the filter material, so that the activated carbon filter 4 can filter continuously, which helps to improve the efficiency of the water filtration.

[0042] The present application realizes efficient filtration of reclaimed water through the above scheme. By filtering the reclaimed water through a fiber ball filter, a multi-media filter and an activated carbon filter for multiple times in sequence, suspended matter, colloidal substances, free matter and other impurities in the reclaimed water are removed. By setting the activated carbon in the activated carbon filter tube, not only the filtration area of ​​the activated carbon is increased, but also it is conducive to independent control of a single activated carbon filter tube, and the replacement of a single activated carbon filter tube is realized, and the operation is more convenient. It is also possible to replace the activated carbon filter tubes one by one without stopping the overall filtration system to replace the filter material, so that the activated carbon filter can filter continuously, which helps to improve the efficiency of reclaimed water filtration. By setting a ring plate on the outer periphery of the upper part of the activated carbon filter tube, the diameter of the ring plate is larger than the large diameter of the hole, so that the activated carbon filter tube will not fall through the upper plate frame, thereby further fixing the activated carbon filter tube. At the same time, the ring plate can also seal the connection between the activated carbon filter tube and the upper plate frame to prevent the unfiltered reclaimed water from leaking, thereby improving the reclaimed water purification effect.

[0043] like Figure 4 As shown, optionally, the output end of the water inlet pipe 411 extends horizontally into the interior of the tank body 410 , and water distribution holes 413 are provided at the bottom and side walls of the water inlet pipe 411 .

[0044] Specifically, water distribution holes 413 are provided at the bottom and side walls of the water inlet pipe 411 to increase the falling area of ​​the grey water after entering the tank body 410, so that the falling distribution of the grey water is more uniform, which is conducive to the filtration amount of activated carbon in each activated carbon filter tube 450 being similar, avoiding excessive amount in some activated carbon filter tubes 450.

[0045] like Figure 5 As shown, optionally, the activated carbon filter tube 450 includes an inner mesh tube 510 , an outer mesh tube 520 and an activated carbon filter material layer 530 , the outer mesh tube 520 is sleeved outside the inner mesh tube 510 , and the space between the outer mesh tube 520 and the inner mesh tube 510 is the activated carbon filter material layer 530 .

[0046] Specifically, the outer mesh tube 520 is sleeved on the outer side of the inner mesh tube 510, and the space between the outer mesh tube 520 and the inner mesh tube 510 is filled with activated carbon to form an activated carbon filter material layer 530. In this way, after the grey water enters the activated carbon filter tube 450, the filtration area is the side wall area of ​​the inner mesh tube 510, which helps to increase the filtration area of ​​the grey water in the activated carbon filter tube 450 and improve the filtration efficiency.

[0047] like Figure 4 As shown, optionally, the ring plate 452 is arranged on the outer periphery of the top of the outer network pipe 520.

[0048] Specifically, this can improve the sealing between the activated carbon filter tube 450 and the upper plate frame 430, prevent the leakage of unfiltered grey water, and improve the water quality of the filtered grey water.

[0049] like Figure 6 As shown, optionally, the tank cover 420 is composed of two semicircular cover plates 421, and the side walls of the two semicircular cover plates 421 close to the center of the tank cover 420 are movably connected.

[0050] Specifically, the two semicircular covers 421 can be opened independently, and when replacing the activated carbon filter tube 450, only the semicircular cover 421 at the corresponding position needs to be opened, making the operation more convenient. It can also reduce the escape of gas in the tank body 410 when replacing the activated carbon filter tube 450, which is conducive to the cleanliness of the operating environment.

[0051] like Figure 5 and Figure 6 As shown, optionally, a first handle 422 is movably provided on each of the two semicircular cover plates 421 , and a second handle 453 is movably provided on the ring plate 452 .

[0052] Specifically, the first handle 422 is used to facilitate the opening and closing of the two semicircular cover plates 421, and the second handle 453 is used to apply force to the ring plate 452 by holding the second handle 453 when replacing the activated carbon filter tube 450, thereby lifting and pulling out the activated carbon filter tube 450. The setting of the first handle 422 and the second handle 453 makes it more convenient to replace the activated carbon filter tube 450.

[0053] Optionally, supporting feet 6 are provided around the bottom of the tank body 410 .

[0054] Specifically, the support legs 6 are used to support the tank body 410 to increase the stability of the tank body 410 .

[0055] The technical solution of the present application is described in detail below with reference to specific embodiments.

[0056] The operation process of the water filtration system of this embodiment is as follows:

[0057] The water stored in the water tank 1 is powered by the water pump 110 and sequentially transported to the fiber ball filter 2, the multi-media filter 3 and the activated carbon filter 4 for multiple filtrations to remove impurities such as suspended matter, colloidal matter, and free matter in the water. In the activated carbon filter 4, the water is transported to the surface of the upper plate frame 430 through the water distribution holes 413 on the water inlet pipe 411. The upper plate frame 430 distributes the incoming water so that the water is first spread on the upper plate frame 430 and then enters the activated carbon filter tube 450 from the top of the activated carbon filter tube 450 for filtration. The water flows through the activated carbon filter tube 450, and the impurities are adsorbed and filtered by the activated carbon therein and are trapped in the activated carbon filter tube 450. The purified water flows out through the side wall of the activated carbon filter tube 450 and flows to the bottom of the tank 410 through the drain port 4401, and is finally discharged through the outlet pipe 412 and enters the subsequent purification equipment, such as the water softening equipment.

[0058] When the activated carbon filter tube 450 is placed inside the tank body 410 and the filtering work can be carried out normally, the outer thread 451 at the lower part of the activated carbon filter tube 450 is tightened and adapted with the inner thread 441, and the top of the activated carbon filter tube 450 extends out of the upper plate frame 430, so as to fix the activated carbon filter tube 450 and carry out the filtering work normally. As the filtering proceeds, more and more impurities are trapped in the activated carbon in the activated carbon filter tube 450. When the activated carbon in the activated carbon filter tube 450 needs to be replaced, the tank cover 420 is opened, and the activated carbon filter tube 450 is twisted so that the outer thread 451 at the lower part of the activated carbon filter tube 450 is loosened with the inner thread 441, and the activated carbon filter tube 450 is separated from the lower plate frame 440, and then the activated carbon filter tube 450 is lifted up and pulled out, and at the same time, the cover plate 431 covers the hole of the upper plate frame 430 for the activated carbon filter tube 450 to pass through under the action of gravity, so as to prevent the unfiltered water from leaking through the hole. Take a new activated carbon filter tube 450 for installation, screw the activated carbon filter tube 450 again, the two ends of the activated carbon filter tube 450 pass through the upper plate frame 430 and the lower plate frame 440 respectively, the external thread 451 and the internal thread 441 at the lower part of the activated carbon filter tube 450 are tightened and adapted again, and the activated carbon filter tube 450 is replaced.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A grey water filtration system, characterized in that: include: A grey water pool (1), a fiber ball filter (2), a multi-media filter (3) and an activated carbon filter (4) connected in sequence, wherein the outlet of the grey water pool (1) and the inlet of the fiber ball filter (2) are connected via a grey water pump (110); The activated carbon filter (4) comprises a tank body (410), a tank cover (420), an upper plate frame (430), a lower plate frame (440) and a plurality of activated carbon filter tubes (450); the tank cover (420) covers the top of the tank body (410); the upper plate frame (430) and the lower plate frame (440) are arranged in the tank body (410), and the upper plate frame (430) is located above the lower plate frame (440); two ends of the activated carbon filter tube (450) pass through the upper plate frame (430) and the lower plate frame (440) respectively; and a drainage port (4401) is also provided on the lower plate frame (440); An internal thread (441) is provided at the connection between the lower plate frame (440) and the activated carbon filter tube (450); an external thread (451) matching the internal thread (441) is provided at the lower portion of the activated carbon filter tube (450); a ring plate (452) is further provided on the outer periphery of the upper portion of the activated carbon filter tube (450); the ring plate (452) is located above a hole on the upper plate frame (430) for the activated carbon filter tube (450) to pass through, and the diameter of the ring plate (452) is greater than the diameter of the hole; and a cover plate (431) is provided on one side of the hole of the upper plate frame (430); A water inlet pipe (411) is provided at the upper portion of the tank body (410), and the water inlet pipe (411) is located above the upper plate frame (430). A water outlet pipe (412) is provided at the bottom of the tank body (410).

2. The grey water filtration system according to claim 1, characterized in that: The output end of the water inlet pipe (411) extends horizontally into the interior of the tank body (410), and water distribution holes (413) are provided at the bottom and side walls of the water inlet pipe (411).

3. The grey water filtration system according to claim 1, characterized in that: The activated carbon filter tube (450) comprises an inner network tube (510), an outer network tube (520) and an activated carbon filter material layer (530); the outer network tube (520) is sleeved outside the inner network tube (510); and the space between the outer network tube (520) and the inner network tube (510) is the activated carbon filter material layer (530).

4. The grey water filtration system according to claim 3, characterized in that: The ring plate (452) is arranged on the outer periphery of the top of the outer network tube (520).

5. The grey water filtration system according to claim 1, characterized in that: The tank cover (420) is composed of two semicircular cover plates (421), and the side walls of the two semicircular cover plates (421) close to the center of the tank cover (420) are movably connected.

6. The grey water filtration system according to claim 5, characterized in that: A first handle (422) is movably provided on each of the two semicircular cover plates (421), and a second handle (453) is movably provided on the ring plate (452).

7. The reclaimed water filtration system according to any one of claims 1 to 6, characterized in that: Support feet (6) are arranged circumferentially on the bottom of the tank body (410).

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