Multi-layer sand filtering device

Abstract

The utility model provides a multilayer sand filtration device, which belongs to the technical field of water treatment, is used for filtering filtrate, and comprises a tank body, a cover plate and a plurality of first partition plates, the first partition plates are arranged at intervals along the axial direction of the tank body, the first partition plates are connected with the inner wall of the tank body to form a plurality of accommodating cavities, and the accommodating cavities are filled with filter materials; each first partition plate is provided with a first through hole and a plurality of second through holes, and the second through holes are formed around the first through hole; the first pipeline penetrates through the first through hole and communicates with the liquid outlet, the first pipeline is provided with a plurality of third through holes, and the third through holes are located in the first through hole and face the hole wall of the first through hole; the second pipeline penetrates through the second through holes and is communicated with the liquid inlet, and the second pipeline is provided with a plurality of fourth through holes and is used for enabling filtrate to flow through the filter material through the fourth through holes. By arranging the multiple filtering layers, the circulation area of the sand filtering device is increased, the filtering efficiency is improved, and the size and the mass of the sand filtering device are reduced.

Description

Technical Field

[0001] This application belongs to the technical field of water treatment, and particularly relates to a multi-layer sand filter device. Background Art

[0002] As a pre-filter device for many apparatuses, the sand filter is widely used in many fields. The sand filter consists of filter media and a water distributor. After water enters the filter, it gradually seeps into the filter media from the upper part. When the water passes through the filter media, impurities are adsorbed by the filter media and are collected in the water distributor inside the filter under the filter media, and then flow out from the outlet of the filter, thereby achieving the filtering effect.

[0003] During the filtering process, as a pretreatment device, in order to reduce the resistance of the water flow, the volume of the sand filter is very large, which results in a very large volume and weight of the entire device, and further leads to an increase in the cost of the entire system. To a certain extent, it also limits the application of the sand filter. Therefore, it is necessary to reduce the volume and cost of the device. Utility Model Content

[0004] This application provides a multi-layer sand filter device, aiming to solve the problem of the relatively large volume of the existing sand filter device.

[0005] The first embodiment of this application provides a multi-layer sand filter device for filtering filtrate, including:

[0006] A tank body, one side of the tank body has an opening, and the other side is provided with a liquid outlet;

[0007] A cover plate, the cover plate seals the opening and is provided with a liquid inlet;

[0008] A plurality of first partition plates, the first partition plates are arranged at intervals along the axial direction of the tank body, and the first partition plates are connected to the inner wall of the tank body to form several accommodating cavities, and filter media are filled in the accommodating cavities; each of the first partition plates has a first through hole and several second through holes, and the second through holes are arranged around the first through hole;

[0009] A first pipe, the first pipe penetrates through the first through hole and is communicated with the liquid outlet, the first pipe has several third through holes, the third through holes are located inside the first through hole and are arranged towards the hole wall of the first through hole;

[0010] A second pipe, the second pipe penetrates through the second through hole and is communicated with the liquid inlet, the second pipe has several fourth through holes for allowing the filtrate to flow through the fourth through holes and pass through the filter media.

[0011] In some embodiments, inside each of the accommodating cavities, the bottom of the filter media is connected to the first partition plate, and there is a first gap between the top of the filter media and another first partition plate.

[0012] In some embodiments, a plurality of diversion grooves are provided on a side of the first partition plate close to the filter media. The diversion grooves communicate with the first through holes and extend from the position where the first through holes are located to the edge of the first partition plate.

[0013] In some embodiments, the fourth through hole communicates with the first gap.

[0014] In some embodiments, the multi-layer sand filtration device further includes:

[0015] A liquid inlet pipe that communicates with the liquid inlet;

[0016] A liquid outlet pipe that communicates with the liquid outlet.

[0017] In some embodiments, a second partition plate is further included. The second partition plate is disposed between the cover plate and the tank body. The second partition plate includes a plurality of fifth through holes to communicate with the second pipe. A second gap is formed between the second partition plate and the cover plate for allowing the filtrate to flow through the liquid inlet and enter the second pipe through the second gap.

[0018] In some embodiments, a first protrusion is provided on a side of the second partition plate close to the cover plate for forming a second gap between the second partition plate and the cover plate.

[0019] In some embodiments, the cover plate, the second partition plate and the tank body are fixed by bolts.

[0020] In some embodiments, the number of the first partition plates is 3 to 6.

[0021] In some embodiments, the first pipe is formed by sequentially connecting a plurality of first sub-pipes end to end. Among them, a first connection part is provided between two adjacent first sub-pipes, and the first connection part is disposed towards the hole wall of the first through hole;

[0022] The second pipe is formed by sequentially connecting a plurality of second sub-pipes end to end. Among them, a second connection part is provided between two adjacent second sub-pipes, and the second connection part is disposed towards the hole wall of the second through hole.

[0023] In some embodiments, a second protrusion is provided along the outer periphery of the first through hole of the first partition plate for surrounding the first connection part.

[0024] In some embodiments, a third protrusion is provided along the outer periphery of the second through hole of the first partition plate for surrounding the second connection part.

[0025] In some embodiments, the first sub-pipeline has a first outer wall, and an annular first step portion and a second step portion are provided on the first outer wall for clamping the second convex portion between the first step portion and the second step portion.

[0026] In some embodiments, the second sub-pipeline has a second outer wall, and an annular third step portion and a fourth step portion are provided on the second outer wall for clamping the third convex portion between the third step portion and the fourth step portion.

[0027] The present application provides a multi-layer sand filtration device for filtering filtrate, including: a tank body, one side of the tank body has an opening, and the other side is provided with a liquid outlet; a cover plate, the cover plate seals the opening and is provided with a liquid inlet; a plurality of first partition plates, the first partition plates are arranged at intervals along the axial direction of the tank body, and the first partition plates are connected to the inner wall of the tank body to form a plurality of accommodation cavities, and filter media are filled in the accommodation cavities; each first partition plate has a first through hole and a plurality of second through holes, and the second through holes are arranged around the first through hole; a first pipeline, the first pipeline penetrates through the first through hole and is communicated with the liquid outlet, the first pipeline has a plurality of third through holes, the third through holes are located in the first through hole and are arranged towards the hole wall of the first through hole; a second pipeline, the second pipeline penetrates through the second through hole and is communicated with the liquid inlet, the second pipeline has a plurality of fourth through holes for allowing the filtrate to flow through the filter media through the fourth through holes. By arranging multiple filtration layers, the incoming liquid is distributed to multiple layers for simultaneous filtration, greatly increasing the flow area of the sand filtration device, reducing the amount of filter media used, thereby reducing the overall volume and total mass of the sand filtration device while ensuring the filtration efficiency, further expanding the application scenarios of the sand filtration device, and having certain market promotion value and prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The following will make the technical solutions and other beneficial effects of the present application obvious through a detailed description of the specific embodiments of the present application in conjunction with the drawings.

[0029] Figure 1 is a three-dimensional structural schematic diagram of a multi-layer sand filtration device provided by the present application;

[0030] Figure 2 is an exploded structural schematic diagram of a multi-layer sand filtration device provided by the present application;

[0031] Figure 3 is a side view structural schematic diagram of a multi-layer sand filtration device provided by the present application;

[0032] Figure 4 is an A-A cross-sectional structural schematic diagram of a multi-layer sand filtration device provided by the present application;

[0033] Figure 5 is a B-B cross-sectional structural schematic diagram of a multi-layer sand filtration device provided by the present application;

[0034] Figure 6 It is a partial enlarged schematic view of part a in Embodiment 5 of this application;

[0035] Figure 7 It is a partial enlarged schematic view of part b in Embodiment 5 of this application;

[0036] Figure 8 It is a schematic structural view of the first partition plate in a multi-layer sand filtration device provided by this application;

[0037] Figure 9 It is a schematic structural view of the first pipeline in a multi-layer sand filtration device provided by this application;

[0038] Figure 10 It is a partial enlarged schematic view of part c in Embodiment 9 of this application;

[0039] Figure 11 It is a schematic structural view of the second pipeline in a multi-layer sand filtration device provided by this application;

[0040] Figure 12 It is a partial enlarged schematic view of part d in Embodiment 11 of this application;

[0041] Figure 13 It is a schematic working process view of a multi-layer sand filtration device provided by this application;

[0042] Reference numerals:

[0043] Tank body - 100, cover plate - 110, bolt - 111, filter material - 120, first gap - 130, first partition plate - 200, first through hole - 210, second through hole - 220, diversion groove - 230, second protrusion - 240, third protrusion - 250, first pipeline - 300, third through hole - 310, first sub-pipeline - 320, first step - 321, second step - 322, first connection - 330, second pipeline - 400, fourth through hole - 410, second sub-pipeline - 420, third step - 421, fourth step - 422, second connection - 430, liquid inlet pipe - 500, liquid outlet pipe - 600, second partition plate - 700, several fifth through holes - 710, second gap - 720, first protrusion - 730, support feet - 800. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.

[0045] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. 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. In the description of the present application, "a plurality of" means two or more unless otherwise clearly and specifically limited. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0046] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application.

[0047] The first embodiment of the present application provides a multi-layer sand filtration device for filtering filtrate, including:

[0048] A tank body 100, see Figures 1 to 3 , one side of the tank body 100 has an opening, and the other side is provided with a liquid outlet;

[0049] A cover plate 110, see Figure 1 and Figure 2 , the cover plate 110 seals the opening and is provided with a liquid inlet;

[0050] A plurality of first partition plates 200, see Figure 4 and Figure 8 , the first partition plates 200 are arranged at intervals along the axial direction of the tank body 100, and the first partition plates 200 are connected to the inner wall of the tank body 100 to form several accommodation cavities, and filter media 120 are filled in the accommodation cavities; each first partition plate 200 has a first through hole 210 and several second through holes 220, and the second through holes 220 are arranged around the first through hole 210;

[0051] A first pipeline 300, see Figure 5 and Figure 6 , the first pipeline 300 penetrates through the first through hole 210 and is communicated with the liquid outlet, the first pipeline 300 has several third through holes 310, the third through holes 310 are located inside the first through hole 210 and are arranged towards the hole wall of the first through hole 210;

[0052] The second pipe 400, see Figure 5 and Figure 7 , the second pipe 400 penetrates through the second through-hole 220 and is communicated with the liquid inlet. The second pipe 400 has a plurality of fourth through-holes 410 for allowing the filtrate to flow through the fourth through-holes 410 and pass through the filter media 120.

[0053] When filtering the filtrate using the sand filtration device, the resistance of the filtrate flowing through the filter media 120 is related to the cross-sectional area of the filter media 120. Therefore, the larger the filtrate flow rate, the larger the cross-sectional area of the required filter media 120. See Figure 13 , when the multi-layer sand filtration device provided in this application works, by using the first partition plate 200, the filter media 120 inside the sand filtration device is divided into multiple filter layers. After the filtrate enters the liquid inlet through the liquid inlet pipe 500, it is shunted by flowing into a plurality of second pipes 400, and under the action of gravity, it passes through the fourth through-holes 410 corresponding to each filter layer on the second pipe 400 and enters different filter layers simultaneously to complete the filtration respectively. Subsequently, the filtrate that has completed the filtration flows into the first pipe through the third through-holes 310 and is discharged through the liquid outlet pipe 600 into the storage tank or the next process. The multi-layer sand filtration device provided in this application can distribute the incoming liquid to multiple layers for simultaneous filtration through the scheme of stratifying the filter media 120 and performing shunt filtration, greatly increasing the flow-through area of the sand filtration device, reducing the amount of filter media used, thereby reducing the overall volume and total mass of the sand filtration device while ensuring the filtration efficiency, and further expanding the application scenarios of the sand filtration device.

[0054] In some embodiments, as Figure 2 shown, the number of the second pipes 400 corresponds to the number of the second through-holes 220 in each first partition plate 200, so that the second pipes 400 can be arranged around the first pipe 300, thereby having a better shunt and confluence effect.

[0055] In some embodiments, at the bottom of the filter media 120 in each accommodation cavity, it is connected to the first partition plate 200, and there is a first gap 130 between the top of the filter media 120 and another first partition plate 200.

[0056] By providing a certain gap 130 between the top of the filter media 120 and the bottom of the upper first partition plate 200, it can make the filtrate enter the filter layer more smoothly and then flow into the filter media 120.

[0057] See Figure 8 , in some embodiments, a plurality of diversion grooves 230 are provided on the side of the first partition plate 200 close to the filter media 120. The diversion grooves 230 are communicated with the first through-holes 210 and extend from the position where the first through-holes 210 are located to the edge of the first partition plate 200.

[0058] By providing the diversion groove 230, it is further conducive to the filtrate passing through the filter media 120 to converge into the first conduit 230 through the diversion groove 230.

[0059] In some embodiments, the fourth through-hole 410 communicates with the first gap 130, enabling the diverted filtrate to flow through the fourth through-hole 410 to the top of the filter media 120 of the corresponding filtration layer, achieving more thorough filtration.

[0060] See Figure 3 , in some embodiments, the multi-layer sand filtration device further includes:

[0061] A liquid inlet pipe 500, which is connected to the liquid inlet.

[0062] A liquid outlet pipe 600, which is connected to the liquid outlet.

[0063] See Figure 2 and Figure 5 , in some embodiments, it further includes a second partition plate 700, which is disposed between the cover plate 110 and the tank body 100. The second partition plate 700 includes a plurality of fifth through-holes 710 for communicating with the second conduit 400. A second gap 720 is formed between the second partition plate 700 and the cover plate 110, for enabling the filtrate to enter the second conduit 400 through the liquid inlet and flowing through the second gap 720.

[0064] In some embodiments, a first protrusion 730 is provided on one side of the second partition plate 700 close to the cover plate 110, for forming the second gap 720 between the second partition plate 700 and the cover plate 110.

[0065] By providing the second gap 720, it is further possible to divert the filtrate at the liquid inlet, enabling the filtrate to enter each second conduit 400 more evenly.

[0066] In some embodiments, the cover plate 110, the second partition plate 700, and the tank body 100 are fixed by bolts 111.

[0067] In some embodiments, the number of the first partition plates 200 is 3 to 6. Further, the number of the first partition plates 200 can be any one of 3, 4, 5, and 6. When the number of the first partition plates 200 satisfies the above value range, it can ensure that the sand filtration device has a relatively ideal total height, and at the same time ensure that the filtrate entering each filtration layer can be fully filtered.

[0068] In some embodiments, the first conduit 300 and the second conduit 400 can be respectively formed by assembling a plurality of sub-conduits. Each section of the sub-conduit corresponds to one filtration layer, thereby facilitating the hierarchical assembly of the sand filtration device and flexibly adjusting the number of filtration layers according to different usage scenarios.

[0069] See Figure 9 and Figure 10 , the first pipeline 300 is formed by sequentially connecting a plurality of first sub-pipelines 320 end to end. Among them, there is a first connection 330 between two adjacent first sub-pipelines 320, and the first connection 330 is arranged towards the hole wall of the first through hole 210;

[0070] See Figure 11 and Figure 12 , the second pipeline 400 is formed by sequentially connecting a plurality of second sub-pipelines 420 end to end. Among them, there is a second connection 430 between two adjacent second sub-pipelines 420, and the second connection 430 is arranged towards the hole wall of the second through hole 220.

[0071] See Figure 6 , in some embodiments, the first partition 200 is provided with a second protrusion 240 along the outer periphery of the first through hole 210 for surrounding the first connection 330, so as to fix two adjacent first sub-pipelines 320.

[0072] See Figure 7 , in some embodiments, the first partition 200 is provided with a third protrusion 250 along the outer periphery of the second through hole 220 for surrounding the second connection 430, so as to fix two adjacent second sub-pipelines 420.

[0073] See Figure 6 and Figure 11 , in some embodiments, the first sub-pipeline 320 has a first outer wall, and a ring-shaped first step 321 and a second step 322 are provided on the first outer wall for engaging the second protrusion 240 between the first step 321 and the second step 322, so as to further fix two adjacent first sub-pipelines 320.

[0074] See Figure 7 and Figure 12 , in some embodiments, the second sub-pipeline 420 has a second outer wall, and a ring-shaped third step 421 and a fourth step 422 are provided on the second outer wall for engaging the third protrusion 250 between the third step 421 and the fourth step 422, so as to further fix two adjacent second sub-pipelines 420.

[0075] The above has introduced in detail a multi-layer sand filtration device provided by an embodiment of the present application. Specific examples are used in the present application to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and 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 multi-layer sand filtration device for filtering filtrate, characterized in that, Comprising: A tank body (100), one side of the tank body (100) has an opening, and the other side is provided with a liquid outlet; A cover plate (110), the cover plate (110) seals the opening, and is provided with a liquid inlet; A plurality of first partition plates (200), the first partition plates (200) are arranged at intervals along the axial direction of the tank body (100), the first partition plates (200) are connected to the inner wall of the tank body (100) to form a number of accommodating cavities, and filter media (120) are filled in the accommodating cavities; each of the first partition plates (200) has a first through hole (210) and a number of second through holes (220), and the second through holes (220) are arranged around the first through hole (210); A first pipe (300), the first pipe (300) penetrates through the first through hole (210) and is communicated with the liquid outlet, the first pipe (300) has a number of third through holes (310), the third through holes (310) are located in the first through hole (210) and are arranged towards the hole wall of the first through hole (210); A second pipe (400), the second pipe (400) penetrates through the second through hole (220) and is communicated with the liquid inlet, the second pipe (400) has a number of fourth through holes (410) for allowing the filtrate to flow through the fourth through holes (410) and pass through the filter media (120).

2. The multi-layer sand filtration device according to claim 1, characterized in that, In each of the accommodating cavities, the bottom of the filter media (120) is connected to the first partition plate (200), and there is a first gap (130) between the top of the filter media (120) and another first partition plate (200).

3. The multi-layer sand filtering device according to claim 2, characterized in that, A number of flow guiding grooves (230) are provided on one side of the first partition plate (200) close to the filter media (120), the flow guiding grooves (230) are communicated with the first through hole (210), and extend from the position where the first through hole (210) is located to the edge of the first partition plate (200).

4. A multi-layer sand filtration device according to claim 2, characterized in that, The fourth through hole (410) is communicated with the first gap (130).

5. The multi-layer sand filtration device according to claim 1, characterized in that, Also comprising: A liquid inlet pipe (500), the liquid inlet pipe (500) is communicated with the liquid inlet; A liquid outlet pipe (600), the liquid outlet pipe (600) is communicated with the liquid outlet.

6. A multi-layer sand filtration device according to claim 1, characterized in that, Also comprising a second partition plate (700), the second partition plate (700) is arranged between the cover plate (110) and the tank body (100), the second partition plate (700) includes a number of fifth through holes (710) to communicate with the second pipe (400), and there is a second gap (720) between the second partition plate (700) and the cover plate (110) for allowing the filtrate to flow through the liquid inlet and enter the second pipe (400) through the second gap (720).

7. A multi-layer sand filtration device according to claim 6, characterized in that, A first convex portion (730) is provided on one side of the second partition plate (700) close to the cover plate (110) for forming the second gap (720) between the second partition plate (700) and the cover plate (110).

8. A multi-layer sand filtration device according to claim 6, characterized in that, The cover plate (110), the second partition plate (700) and the tank body (100) are fixed by bolts (111).

9. The multi-layer sand filtration device according to claim 1, characterized in that, The number of the first partition plates (200) is 3 to 6.

10. The multi-layer sand filtration device according to claim 1, characterized in that, The first pipeline (300) is formed by sequentially connecting a plurality of first sub-pipelines (320) end to end. Among them, there is a first connection part (330) between two adjacent first sub-pipelines (320), and the first connection part (330) is arranged towards the hole wall of the first through hole (210); The second pipeline (400) is formed by sequentially connecting a plurality of second sub-pipelines (420) end to end. Among them, there is a second connection part (430) between two adjacent second sub-pipelines (420), and the second connection part (430) is arranged towards the hole wall of the second through hole (220).

11. A multi-layer sand filtration device according to claim 10, characterized in that, The first partition plate (200) is provided with a second protrusion part (240) along the outer periphery of the first through hole (210) for surrounding the first connection part (330); and / or, The first partition plate (200) is provided with a third protrusion part (250) along the outer periphery of the second through hole (220) for surrounding the second connection part (430).

12. A multi-layer sand filtration device according to claim 11, characterized in that, The first sub-pipeline (320) has a first outer wall, and an annular first step part (321) and a second step part (322) are arranged on the first outer wall for clamping the second protrusion part (240) between the first step part (321) and the second step part (322).

13. A multi-layer sand filtration device according to claim 11, characterized in that, The second sub-pipeline (420) has a second outer wall, and an annular third step part (421) and a fourth step part (422) are arranged on the second outer wall for clamping the third protrusion part (250) between the third step part (421) and the fourth step part (422).

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