Drain with filter screen structure and application thereof

Abstract

This utility model discloses a filter structure and a floor drain with a filter structure. The filter structure includes a mesh body that is inclined downward from the periphery to the center. The mesh body has multiple first filter holes. A baffle column extending upward is provided on the upper side of the mesh body and is located at an eccentric position of the mesh body. Under the action of the Karman vortex street effect, the vortex formed by the water flow on the mesh body has good continuity, reducing the possibility of hair getting tangled on the baffle column. Hair is efficiently gathered on the mesh body near the baffle column, effectively reducing the coverage of the first filter holes on the mesh body by hair, ensuring normal drainage of the mesh body for a long time, and reducing the frequency of cleaning.

Description

Technical Field

[0001] This utility model relates to the field of drainage equipment technology, and in particular to a filter structure and a floor drain using the same. Background Technology

[0002] Some existing floor drains have filters to collect hair from wastewater during bathroom use. However, hair tends to accumulate haphazardly on the filters, largely covering the mesh and preventing proper drainage. This necessitates frequent cleaning, significantly impacting the user experience. Utility Model Content

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the related art. To this end, the present invention proposes a filter structure.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model also proposes a floor drain having the above-mentioned filter structure.

[0006] According to a first aspect of the present invention, a filter structure includes a mesh body that is inclined downward from the periphery to the center, the mesh body having a plurality of first filter holes, and an upwardly extending baffle post on the upper side of the mesh body, the baffle post being located at an eccentric position of the mesh body.

[0007] The filter structure according to the embodiment of this utility model has at least the following beneficial effects: under the action of the Karman vortex street effect, the vortex formed by the water flow on the mesh has good continuity, reducing the possibility of hair getting tangled on the baffle column. The hair is efficiently gathered on the mesh near the baffle column, effectively reducing the coverage of the first filter hole on the mesh by the hair, ensuring normal drainage of the mesh for a long time, and reducing the frequency of cleaning.

[0008] According to some embodiments of this utility model, on the vertical cross-section passing through the center of the net body and the deflector column, the maximum horizontal dimension at both ends of the net body is L, the distance between the eccentric position of the deflector column and the end of the net body is L1, which satisfies the ratio of L1 / L in the range of 0.6 to 0.8, and the position of the deflector column is the lowest point on the upper side of the net body.

[0009] According to some embodiments of this utility model, on the vertical cross-section passing through the deflector column, the extension path of the mesh body from its periphery towards the deflector column is the fastest descent curve.

[0010] According to some embodiments of the present invention, the mesh body is provided with a settling trough, the settling trough is located at an eccentric position of the baffle column relative to the mesh body, the settling trough extends downward from the mesh body in a hollow cylindrical shape, the upper end of the settling trough is open, the settling trough is provided with a plurality of second filter holes, and the baffle column extends upward from the bottom of the settling trough and extends to the top of the settling trough.

[0011] According to some embodiments of the present invention, the mesh body is provided with a plurality of protruding strips, the protruding strips protrude upward from the upper side of the mesh body, the protruding strips extend in an arc around the deflector column, and each of the protruding strips is distributed in sequence from far to near along a spiral route centered on the deflector column.

[0012] According to some embodiments of the present invention, the highest height of the protrusion that is relatively far from the deflector is greater than the highest height of the protrusion that is relatively close to the deflector.

[0013] According to some embodiments of the present invention, the two ends of the protrusion are a first end and a second end, respectively. Along the water flow direction, the second end is located downstream of the first end, and the height of the protrusion gradually decreases from the first end to the second end.

[0014] According to some embodiments of the present invention, the mesh body is provided with an upwardly protruding part, the protruding part is arranged in a circular shape around the flow-blocking column, and the highest point of the flow-blocking column is higher than the highest point of the protruding part.

[0015] The floor drain according to a second aspect of the present invention includes a filter structure.

[0016] The floor drain according to the present invention has at least the following beneficial effects: the filter structure enables efficient drainage and reduces the frequency of cleaning the floor drain.

[0017] According to some embodiments of the present invention, a grate is also included, which covers the top of the mesh body. The grate has a plurality of strip-shaped drainage holes, which are distributed at equal intervals around the center of the grate, and the number of drainage holes is odd.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1This is a schematic diagram of one embodiment of the filter structure;

[0021] Figure 2 yes Figure 1 A schematic diagram of the vertical cross-section;

[0022] Figure 3 This is a schematic diagram of a second embodiment of the filter structure;

[0023] Figure 4 This is a schematic diagram of a third embodiment of the filter structure;

[0024] Figure 5 This is a schematic diagram of the fourth embodiment of the filter structure;

[0025] Figure 6 This is a schematic diagram of the floor drain structure.

[0026] Reference numerals: mesh body 100; first filter hole 110; baffle column 200; settling tank 300; second filter hole 310; protrusion 400; first end 410; second end 420; protrusion 500; grate 600; drain hole 610. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] This utility model relates to a filter structure, including a mesh body 100.

[0029] like Figure 1 and Figure 2As shown, the mesh body 100 is disc-shaped and slopes downwards from its periphery towards its center. The vertical cross-section of the mesh body 100 extends downwards in an arc shape from its periphery towards its center. The mesh body 100 has multiple first filter holes 110 evenly distributed on it. A flow-blocking column 200 is located on the upper side of the mesh body 100, extending upwards from its upper surface. The flow-blocking column 200 is positioned eccentrically on the mesh body 100. In use, the mesh body 100 can be installed in a bathroom drain, with its periphery lower than the upper side of the drain. During drainage, water overflows the drain outlet, flowing from the periphery of the net body 100 onto it. Due to the inclined design of the net body 100, most of the water flows towards the center of the net body 100 along its inclination. Some water is directly discharged from the first filter hole 110 near the periphery of the net body 100 to the bottom of the net body 100. As the water flows towards the center of the net body 100, it passes through the baffle column 200, resulting in a Karman vortex street effect. This causes the water flow after passing through the baffle column 200 to form periodic, regularly arranged, double-row Karman vortex street vortices with opposite rotation directions. Hair in the water flow will swirl and fall onto the net body 100 with the vortex formed by the water flow, and the water will be discharged downwards through the first filter hole 110. Under the influence of the Karman vortex street effect, the vortex formed by the water flow on the net body 100 has good continuity, while reducing the possibility of hair getting tangled on the baffle column 200. The hair is efficiently gathered on the net body 100 near the baffle column 200, effectively reducing the coverage of the first filter hole 110 on the net body 100 by the hair, ensuring that the net body 100 can drain normally for a long time and reducing the frequency of cleaning.

[0030] In one embodiment, such as Figure 1 and Figure 2 As shown, on the vertical cross-section passing through the center of the net body 100 and the baffle column 200, the maximum horizontal dimension of the left and right ends of the net body 100 is L, and the distance from the eccentric position of the baffle column 200 to the left / right end of the net body 100 is L1. The ratio of L1 / L is within the range of 0.6 to 0.8, including L1 / L=0.6 and L1 / L=0.8. Vertically, the location of the baffle column 200 is the lowest point on the upper side of the net body 100. The positioning of the baffle column 200 causes the water flow to form two vortices mainly near the center of the net body 100 after passing through it, causing hair to gather towards the center of the net body 100. In any vertical section passing through the baffle column 200, the extension path of the net body 100 from its periphery towards the baffle column 200 is the steepest descent curve, ensuring that the water flow quickly impacts the baffle column 200, thereby forming a high-speed rotating Karman vortex street vortex.

[0031] In one embodiment, such as Figure 3As shown, a settling trough 300 is provided on the mesh body 100. The settling trough 300 is located at an eccentric position relative to the baffle column 200 and the settling trough 300 extends downward from the mesh body 100 in a hollow cylindrical shape. The upper end of the settling trough 300 is open, meaning the upper end opening of the settling trough 300 is located on the upper surface of the mesh body 100, and the bottom of the settling trough 300 is lower than the lowest point of the mesh body 100. The settling trough 300 is provided with a plurality of second filter holes 310, which can be set at the bottom or on the peripheral wall of the settling trough 300. The baffle column 200 extends upward from the bottom of the settling trough 300 and extends above the settling trough 300. When the water flows through the baffle column 200, a Karman vortex street is formed. Hair in the water floats in the water and gathers with the Karman vortex street. Some solid particles in the water, such as sand, will fall below the baffle column 200 and accumulate in the settling tank 300 after impacting the baffle column 200.

[0032] In one embodiment, such as Figure 4 As shown, the net body 100 is provided with several protruding strips 400. The protruding strips 400 protrude upwards from the upper side of the net body 100 and extend in an arc around the flow-blocking column 200. The protruding strips 400 are distributed at intervals from far to near along a spiral path centered on the flow-blocking column 200. When water flows into the net body 100 and towards the flow-blocking section, part of the water flow impacts the protruding strips 400. The protruding strips 400 guide the flow direction of the water flow, causing the water flow to form a certain vortex before impacting the flow-blocking column 200, thereby improving the Karman vortex street effect. In this embodiment, four protruding strips 400 are provided on the mesh body 100, namely protruding strip 400A, protruding strip 400B, protruding strip 400C and protruding strip 400D. Protruding strips 400A, 400B, 400C and 400D are distributed sequentially at intervals along a spiral route, and protruding strips 400A, 400B, 400C and 400D gradually approach the deflector column 200. It can be set such that the maximum height of the protruding strip 400 that is relatively far from the deflector column 200 is greater than the maximum height of the protruding strip 400 that is relatively close to the deflector column 200, that is, the height of protruding strips 400A, 400B, 400C and 400D gradually decreases. When water flows into the net body 100 from its periphery, the height of the protrusion 400A is at its maximum, enhancing the guiding effect on the initial inflow of water. Subsequently, the heights of protrusions 400B, 400C, and 400D gradually decrease, ensuring that the water flow is guided without affecting the formation of a Karman vortex street when it finally passes through the guide column. Furthermore, the two ends of the protrusion 400 are a first end 410 and a second end 420, respectively. Along the water flow direction, the second end 420 is located downstream of the first end 410, and the height of the protrusion 400 gradually decreases from the first end 410 to the second end 420. As the water flows along the protrusion 400, it flows from the first end 410 to the second end 420. This gradual change in the height of the protrusion 400 effectively guides the water flow.

[0033] In one embodiment, such as Figure 5 As shown, the mesh body 100 has an upwardly protruding protrusion 500. The protrusion 500 is arranged in a ring around the baffle column 200, and the highest point of the baffle column 200 is higher than the highest point of the protrusion 500. In vertical cross-section, the protrusion 500 is similar to a wave, with the crest of the protrusion 500 lower than the highest point of the baffle column 200, and the trough of the protrusion 500 near the baffle column 200 connecting with the bottom or lower part of the baffle column 200. Under the action of the Karman vortex street and the cooperation of the protrusion 500, hair mainly accumulates in the trough of the protrusion 500 on the side away from the baffle column 200. As long as the accumulated hair does not exceed the highest height (crest) of the protrusion 500, the water flow can normally drain through the corresponding first filter hole 110 from the trough between the protrusion 500 and the baffle column 200, thereby further reducing the cleaning frequency.

[0034] like Figure 6 As shown, this utility model also relates to a floor drain, including the aforementioned filter structure. The filter structure is installed in the drain outlet through the floor drain, enabling efficient drainage and reducing the frequency of floor drain cleaning. The floor drain also includes a grate 600. The grate 600 covers the top of the mesh body 100, and the grate 600 has multiple strip-shaped drainage holes 610, which are evenly spaced from the center of the grate 600. The number of drainage holes 610 is odd. This odd number of drainage holes 610 creates an asymmetrical arrangement on the grate 600, resulting in uneven distribution of drainage velocity and pressure when water flows through the grate 600, thus generating vortices. The resulting vortex then flows back into the mesh body 100, forming a more pronounced Karman vortex street in conjunction with the baffle column 200, thereby improving the hair collection effect.

[0035] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, references to terms such as "some specific embodiments" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A filter structure, characterized in that: The device includes a mesh body (100) that is inclined downward from the periphery to the center. The mesh body (100) is provided with a plurality of first filter holes (110). The upper side of the mesh body (100) is provided with an upwardly extending baffle column (200), which is located at an eccentric position of the mesh body (100).

2. The filter structure according to claim 1, characterized in that: On the vertical cross-section passing through the center of the net body (100) and the baffle column (200), the maximum horizontal dimension of both ends of the net body (100) is L, the distance between the eccentric position of the baffle column (200) and the end of the net body (100) is L1, and the ratio of L1 / L is in the range of 0.6 to 0.

8. The location of the baffle column (200) is the lowest point on the upper side of the net body (100).

3. The screen structure according to claim 1 or 2, characterized in that: On the vertical cross-section passing through the baffle column (200), the extension path of the net body (100) from its periphery toward the baffle column (200) is the fastest descent curve.

4. The filter structure according to claim 1, characterized in that: The mesh body (100) is provided with a settling trough (300), the settling trough (300) is located at an eccentric position of the baffle column (200) relative to the mesh body (100), the settling trough (300) extends downward from the mesh body (100) in a hollow cylindrical shape, the upper end of the settling trough (300) is open, the settling trough (300) is provided with a plurality of second filter holes (310), the baffle column (200) extends upward from the bottom of the settling trough (300) and extends to the top of the settling trough (300).

5. The filter structure according to claim 1, characterized in that: The mesh body (100) is provided with a plurality of protrusions (400). The protrusions (400) protrude upward from the upper side of the mesh body (100). The protrusions (400) extend in an arc around the baffle column (200). Each of the protrusions (400) is distributed in sequence from far to near along a spiral route centered on the baffle column (200).

6. The filter structure according to claim 5, characterized in that: The highest height of the protrusion (400) that is relatively far from the deflector (200) is greater than the highest height of the protrusion (400) that is relatively close to the deflector (200).

7. The filter structure according to claim 5 or 6, characterized in that: The two ends of the protrusion (400) are a first end (410) and a second end (420), respectively. The second end (420) is located downstream of the first end (410) along the water flow direction. The height of the protrusion (400) gradually decreases from the first end (410) to the second end (420).

8. The filter structure according to claim 1, characterized in that: The mesh body (100) is provided with an upwardly protruding part (500), the protruding part (500) is arranged in a ring around the flow-blocking column (200), and the highest point of the flow-blocking column (200) is higher than the highest point of the protruding part (500).

9. A floor drain, characterized in that: Includes the filter structure described in any one of claims 1 to 8.

10. The floor drain according to claim 9, characterized in that: It also includes a grate (600) that covers the top of the mesh body (100). The grate (600) has a plurality of strip-shaped drainage holes (610) that are distributed at equal intervals around the center of the grate (600). The number of drainage holes (610) is odd.

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