CN211774248U

CN211774248U - Downcomer water inlet device with filtering capability

Info

Publication number: CN211774248U
Application number: CN201921504988.XU
Authority: CN
Inventors: 赵海慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-10-27
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a downcomer water inlet device with filtering capability belongs to the supporting technical field who makes with the downcomer of domestic wash-basin, vegetable washing basin, including concave type filter chamber, the top of concave type filter chamber is provided with the water inlet, and the bottom is provided with the outlet, its characterized in that be provided with filter equipment in the concave type filter chamber, filter equipment covers the outlet, filter equipment filters the follow the water inlet flow direction the rivers in outlet, filter equipment is three-dimensional porous elasticity drainage material. The utility model discloses can effectively filter the hair or the residue that mix with in the rivers, avoid downcomer to block up, simultaneously, can also effectively avoid the hair winding above that.

Description

Downcomer water inlet device with filtering capability

Technical Field

The utility model relates to a domestic wash basin, the supporting technical field who makes with downcomer of vegetable washing basin, in particular to downcomer water inlet device with filtering capability.

Background

The household washbasin and vegetable washing basin are necessary facilities in modern family toilets and kitchens, people often use the washbasin for washing hands, faces and heads in the toilets, and people often use the vegetable washing basin for washing dishes and vegetables in the kitchens. After washing, the sewage in the hand basin or the vegetable basin is discharged into a sewer from a sewer pipe connected below.

When using wash basins and vegetable basins, people often encounter a problem that some hair or residues are often mixed in the water flow flowing to the water inlet of the sewer pipe. In order to filter these hairs and residues, existing wash basins or vegetable basins are usually provided with a mesh grid at the water inlet, said mesh grid being generally made of plastic or stainless steel material.

If the meshes of the mesh grid are made to be finer, the drainage speed is slower when the sewer port drains water, and the use experience of people is affected, so the mesh diameter of the mesh grid arranged at the water inlet of the existing hand basin or vegetable basin is usually more than 2 mm. While the diameter of the hair is generally about 0.07 mm, it is clear that the filtering precision is not sufficient by using a mesh grid with meshes of 2 mm or more, and the hair or residue entrained in the water flow cannot be effectively filtered.

Because the mesh-type grille is not highly precise in filtration, the hair or debris entrained in the water flow often enters the sewer pipe through the water inlet and is deposited in the sewer pipe. Along with the increase of the amount of hair or residues deposited in the sewer pipe, the sewer pipe can be gradually blocked, which brings troubles to the life of people.

The hair entrained in the water flow often also gets entangled in the mesh grid, which is very troublesome for people to clean.

In order to solve the above problems, there is a need for a filter device that is installed in the inlet of the drain pipe, can effectively filter the hair or residue mixed in the water flow without affecting the drainage speed, and can effectively prevent the hair from winding on the filter device.

Disclosure of Invention

To the above problems, the utility model provides a downcomer water inlet device with filtering capability can effectively filter the hair or the residue that mix with in the rivers, avoids downcomer to block up, simultaneously, can also effectively avoid the hair winding above that.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a downcomer water inlet device with filtering capability, includes concave filter chamber, the top of concave filter chamber is provided with the water inlet, and the bottom is provided with the outlet, its characterized in that be provided with filter equipment in the concave filter chamber, filter equipment covers the outlet, filter equipment filters follow water inlet flow to the rivers in outlet, filter equipment is three-dimensional porous elasticity drainage material.

Further, the three-dimensional porous elastic water filtering material is PP cotton or sponge.

Furthermore, a closed cover plate is arranged at the water inlet and covers the water inlet; when water needs to be drained, a user lifts the closed cover plate, and water is filtered by the filtering device in the concave filtering chamber and then is drained from the water outlet; when the water drainage is not needed, the user only needs to cover the closed cover plate at the water inlet.

Furthermore, a bouncing core column is fixedly connected to the bottom surface of the closed cover plate in the longitudinal direction, the bouncing core column comprises a lower fixed column and an upper telescopic column, and the telescopic column is fixedly connected with the closed cover plate; the fixed column penetrates through the filtering device and is detachably connected with the inner wall of the concave filtering chamber or the inner wall of a drain pipe connected with the water outlet through a supporting frame; a soft sealing ring is arranged between the sealing cover plate and the water inlet; when drainage is needed, after a user presses down the closed cover plate, the telescopic column of the bouncing core column extends upwards, the closed cover plate bounces upwards, and water flows into the water outlet after being filtered by the filtering device on the side face of the bouncing core column in the concave filtering chamber; when the water does not need to be drained, after the user presses the sealing cover plate again, the telescopic column of the bouncing core column contracts downwards, and the sealing cover plate closes downwards to seal the water inlet.

Further, the filtering device is fixedly connected with the closed cover plate, the filtering device is in a column shape, and the specification of the filtering device is matched with that of the water inlet; when water needs to be drained, a user lifts the closed cover plate upwards, the filter device is pulled out upwards from the water inlet along with the closed cover plate, the lower edge of the filter device after pulling out is not higher than the upper edge of the water inlet, and the outer side wall of the filter device is tightly attached to the inner side wall of the water inlet in the whole pulling out process; the water flow enters the filtering device from the side surface of the filtering device exposed above the water inlet, is filtered by the filtering device and then is discharged downwards from the water outlet; when the water does not need to be drained, a user presses the closed cover plate downwards, the filtering device is inserted into the water inlet along with the closed cover plate, and the closed cover plate is closed downwards to cover the water inlet.

Further, the filtering device is fixedly connected with the closed cover plate, the filtering device is in a column shape, and the specification of the filtering device is matched with that of the water inlet; the bottom surface of the closed cover plate is fixedly connected with a bouncing core column in the longitudinal direction, the bouncing core column comprises a fixed column below and a telescopic column above, and the telescopic column is fixedly connected with the closed cover plate; the fixed column penetrates through the filtering device and is detachably connected with the inner wall of the concave filtering chamber or the inner wall of a drain pipe connected with the water outlet through a supporting frame; a soft sealing ring is arranged between the sealing cover plate and the water inlet; when water needs to be drained, after a user presses the closed cover plate, the telescopic column of the bouncing core column extends upwards, the closed cover plate bounces upwards, the filtering device is pulled out upwards from the water inlet along with the closed cover plate, the lower edge of the filtering device after being pulled out is not higher than the upper edge of the water inlet, and the outer side wall of the filtering device is tightly attached to the inner side wall of the water inlet in the whole pulling-out process; the water flow enters the filtering device from the side surface of the filtering device exposed above the water inlet, and flows into the water outlet after being filtered by the filtering device; when the water does not need to be drained, after the user presses the sealing cover plate again, the telescopic column of the bouncing core column contracts downwards, the filtering device is inserted into the water inlet along with the sealing cover plate downwards, and the sealing cover plate closes downwards to seal the water inlet.

Furthermore, the filtering device is sheet-shaped, is longitudinally and annularly arranged below the edge of the closed cover plate along the vertical direction, and the top of the filtering device is fixedly connected with the bottom of the closed cover plate; the sheet-shaped filtering device is encircled below the closed cover plate to form a cylinder shape, and the specification of the outer side wall of the filtering device is matched with that of the water inlet; the bottom surface of the closed cover plate is longitudinally and fixedly connected with a bouncing core column, the bouncing core column comprises a fixed column below and a telescopic column above, the telescopic column is fixedly connected with the closed cover plate, and the fixed column is detachably connected with the concave filter chamber or the inner wall of a drain pipe connected with the drain port through a support frame; a soft sealing ring is arranged between the sealing cover plate and the water inlet; when water needs to be drained, after a user presses the closed cover plate, the telescopic column of the bouncing core column extends upwards, the closed cover plate bounces upwards, the filtering device is pulled out upwards from the water inlet along with the closed cover plate, the lower edge of the filtering device after being pulled out is not higher than the upper edge of the water inlet, and the outer side wall of the filtering device is tightly attached to the inner side wall of the water inlet in the whole pulling-out process; the water flow enters the filtering device from the side surface of the filtering device exposed above the water inlet, and flows into the water outlet after being filtered by the filtering device; when the water does not need to be drained, after the user presses the sealing cover plate again, the telescopic column of the bouncing core column contracts downwards, the filtering device is inserted into the water inlet along with the sealing cover plate downwards, and the sealing cover plate closes downwards to seal the water inlet.

Furthermore, the circumference of water inlet encircles and is equipped with the drainage plate, the height of drainage plate bottom surface is followed one side of keeping away from the water inlet near water inlet side direction and is rised gradually, the drainage plate guide accelerates rivers and gets into the water inlet.

Furthermore, in the concave filtering chamber, the top surface of the filtering device covers the water inlet, and the edge of the top surface of the filtering device is flush with the edge of the water inlet.

Further, the top surface of the filtering device is planar, or convex, or concave, or wavy.

The utility model has the advantages that:

in the utility model, the three-dimensional porous elastic water filtering material is adopted to replace the traditional mesh grid for filtering hair and residue, so that the hair or the residue mixed in the water flow flowing to the water inlet of the sewer pipe in the hand basin and the vegetable basin can be effectively filtered on the premise of not influencing the drainage speed, thereby effectively avoiding the problem of frequent blockage of the sewer pipe;

the utility model discloses in, adopt three-dimensional porous elasticity drainage material replaces traditional mesh grid, can also effectively avoid hair winding above that, and the clearance is got up simple and conveniently to solved the user when clearing up traditional mesh grid, need will twine the problem that the hair on mesh grid peeled off a bit more, solved a user's a big vexation.

Drawings

In order to more clearly illustrate the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural diagram i according to a first embodiment of the present invention.

Fig. 2 is a second schematic structural diagram provided in the second embodiment of the present invention.

Fig. 3 is a third schematic structural diagram provided by the third embodiment of the present invention.

Fig. 4 is a schematic structural diagram four provided by the fourth embodiment of the present invention.

Fig. 5 is a schematic structural diagram five provided by the fourth embodiment of the present invention.

Fig. 6 is a schematic structural diagram six according to the fourth embodiment of the present invention.

Description of reference numerals: 1. a concave filter chamber; 2. a water inlet; 3. a water outlet; 4. a filtration device; 5. closing the cover plate; 6. fixing a column; 7. a telescopic column; 8. a support frame; 9. a drain pipe; 10. a soft sealing ring; 11. a drainage plate; 12. a bracket; 13 a first connecting rod; 14. an annular bracket; 15 second connecting rod.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

Example one

Referring to fig. 1, the sewer pipe water inlet device with the filtering function comprises a concave filtering chamber 1, wherein a water inlet 2 is formed in the top of the concave filtering chamber 1, a water outlet 3 is formed in the bottom of the concave filtering chamber 1, and the water inlet 2 is larger than or equal to the water outlet 3. A filtering device 4 is arranged in the concave filtering chamber 1, the filtering device 4 covers the water outlet 3, the filtering device 4 filters water flowing from the water inlet 2 to the water outlet 3, and the filtering device 4 is made of a three-dimensional porous elastic water filtering material. The three-dimensional porous elastic water filtering material is PP cotton or sponge.

The PP cotton or the sponge is arranged in the concave filter chamber 1 to filter water flow, and the PP cotton or the sponge has the advantages of small resistance to water flow, high drainage speed and high filtering precision, can effectively prevent hair or residues from entering a sewer pipe, and can not be wound on the PP cotton or the sponge.

In this embodiment, the thickness of the PP cotton or sponge is preferably 0.5 cm to 1.5 cm.

The water inlet 2 is provided with a closed cover plate 5, the closed cover plate 5 covers the water inlet 2, and the closed cover plate 5 can be embedded in the water inlet 2 or cover the upper part of the water inlet 2. In this embodiment, the closing cover plate 5 covers the water inlet 2.

When the closed cover plate 5 is covered above the water inlet 2, the top surface of the filter device 4 covers the top surface of the water inlet 2 in the concave filter chamber 1, and the edge of the top surface of the filter device 4 is flush with the edge of the top surface of the water inlet 2. The beneficial effect is that in the process of filtering water flow by the filter device 4, impurities such as hair accumulated on the surface of the filter device 4 can be cleaned more easily.

The top surface of the PP cotton or sponge can be planar, or convex, or concave, or wavy, and the convex, or concave, or wavy top surface can increase the filtering area of the top surface contacted with water flow, increase the drainage speed, and contain more hair or residues. The bottom surface of the closed cover plate 5 is matched with the top surface of the PP cotton or the sponge. In this embodiment, the top surface of the PP wool or sponge is planar.

For convenience of lifting and placing, according to the preference of a user, a lifting handle can be arranged at the top of the closed cover plate 5, or the lifting handle is not required. The sealing cover plate 5 with be provided with soft sealing washer 10 between the water inlet 2, soft sealing washer 10 is the elastic silica gel sealing washer.

When drainage is needed, a user lifts the closed cover plate 5, and water is filtered by the filtering device 4 in the concave filtering chamber 1 and then is discharged from the drainage port 3; when the water does not need to be drained, the user only needs to cover the closed cover plate 5 at the water inlet 2.

During the use of the filter device 4 by the user, as the use time increases, a part of fine impurities may permeate into the interior of the filter device 4, and the user may choose to clean the filter device for reuse or directly replace the filter device. The PP wool or sponge is inexpensive, typically about 0.2 yuan for replacement of one filter unit 4. The filtering device 4 has low cost, convenient use and easy popularization.

Example two

Referring to fig. 2, the other steps are the same as the first embodiment, except that a bouncing post is longitudinally fixed on the bottom surface of the sealing cover plate 5, and the bouncing post is a device commonly used in the field. The bouncing core column comprises a fixed column 6 at the lower part and a telescopic column 7 at the upper part, and in the embodiment, the top end of the telescopic column 7 is fixedly connected with the center of the bottom surface of the closed cover plate 5; the fixing column 6 passes through the filtering device 4, and is detachably connected with the inner wall of the drain pipe 9 connected with the concave filtering chamber 1 or the water outlet 3 through a support frame 8, and water flow can pass through the gap of the support frame 8, in this embodiment, the support frame 8 is clamped with the inner wall of the drain pipe 9 connected below the water outlet 3; the fixing column 6 is tightly attached to the filtering device 4 in the circumferential direction.

When drainage is needed, after a user presses down the closed cover plate 5, the telescopic column 7 of the bouncing core column extends upwards, the closed cover plate 5 bounces upwards, and water flows into the drainage outlet 3 after being filtered by the filtering device 4 on the side surface of the bouncing core column in the concave filtering chamber 1; when the water does not need to be drained, after the user presses the sealing cover plate 5 again, the telescopic column 7 of the bouncing core column contracts downwards, and the sealing cover plate 5 closes downwards to seal the water inlet 2.

The traditional sewer water inlet device with the bouncing core column and the closed cover is characterized in that a net rack with filtering and supporting functions is arranged at the bottom of the bouncing core column, the net rack is usually arranged at a position about 2 cm below the water inlet 2, and the traditional sewer water inlet device has the problem that hair often deposits and winds on the net rack to cause slow drainage and even blockage of a sewer, and the net rack is troublesome to clean. Due to the defect, the traditional sewer pipe water inlet devices with the bouncing core column and the sealing cover on the market are gradually eliminated.

In this embodiment, the edge of 4 top surfaces of filter equipment is kept flat with the edge of 2 top surfaces of water inlet, and at the in-process that filters rivers, impurity such as hair all can remain filter equipment 4's surface, clearance get up for traditional rack convenient and fast more, solved the drawback of traditional rack.

EXAMPLE III

Referring to fig. 3, the other steps are the same as the first embodiment, except that the filtering device 4 is fixedly connected with the closed cover plate 5, the filtering device 4 is in a column shape, and the specification of the filtering device is matched with that of the water inlet 2; in this embodiment, water inlet 2 be circular, filter equipment 4 adopt the PP cotton to make, be cylindrically, the cotton lateral wall of cylindrical PP with 2 specification phase-matchs of water inlet. The top of the cylindrical PP cotton is fixedly connected with the closed cover plate 5.

In practical use, in order to make the cylindrical PP cotton and the sealing cover plate 5 connected more firmly and more durable in plugging, in this embodiment, a bracket 12 with a specification matched with the bottom surface of the cylindrical PP cotton is arranged at the bottom end of the cylindrical PP cotton, a first connecting rod 13 is fixedly connected between the bracket 12 and the sealing cover plate 5, the first connecting rod 13 is arranged at the center of the cylindrical PP cotton, and water flow can pass through the gap of the bracket 12.

When water needs to be drained, a user lifts the closed cover plate 5 upwards, the filter device 4 is pulled out upwards from the water inlet 2 along with the closed cover plate 5, the lower edge of the filter device 4 after being pulled out is not higher than the upper edge of the water inlet 2, and the outer side wall of the filter device 4 is tightly attached to the inner side wall of the water inlet 2 in the whole pulling-out process; the water flow enters the filtering device 4 from the side surface of the filtering device 4 exposed above the water inlet 2, is filtered by the filtering device 4 and then is discharged downwards from the water outlet 3; when the water does not need to be drained, a user presses the closed cover plate 5 downwards, the filtering device 4 is inserted into the water inlet 2 along with the closed cover plate 5, and the closed cover plate 5 is closed downwards to cover the water inlet 2.

Because the water inlet 2 of the existing hand basin or vegetable basin is small, the water drainage speed is slow, and impurities such as hair and the like are easily silted on the surface of the transversely arranged reticular grille at the water inlet 2 in the water drainage process, so that the water drainage is slow. The advantage of this embodiment is that after the filter device 4 is pulled out upwards from the water inlet 2 along with the closing cover 5, the water flow can enter the water inlet 2 from the side of the filter device 4, and the water inlet speed is faster because the filter surface for water inlet is larger. Since the impurities such as hairs are not easily clogged on the surface of the filtering means 4 longitudinally disposed in the present embodiment and are not wound around the filtering means 4, compared to the mesh-like grating disposed in the transverse direction, the filtering means 4 described in the present embodiment drains water more quickly and smoothly.

Example four

Referring to fig. 4, the rest of the embodiment is the same as the first embodiment, except that the filtering device 4 is fixedly connected with the closed cover plate 5, the filtering device 4 is in a column shape, and the specification of the filtering device is matched with that of the water inlet 2; in this embodiment, the water inlet 2 be circular, filter device 4 be cylindrical, the specification of cylindrical filter device 4's lateral wall with circular water inlet 2 cooperatees.

The bottom surface of the closed cover plate 5 is longitudinally and fixedly connected with a bouncing core column which is longitudinally arranged at the center of the cylindrical filter device 4. The bouncing core column comprises a fixed column 6 at the lower part and a telescopic column 7 at the upper part, and the telescopic column 7 is fixedly connected with the closed cover plate 5; the fixing column 6 passes through the filtering device 4, is detachably connected with the inner wall of the concave filtering chamber 1 or the inner wall of a drain pipe 9 connected with the drain port 3 through a supporting frame 8, and water flow can pass through the gap of the supporting frame 8.

In practical use, in order to make the cylindrical filtering device 4 and the sealing cover plate 5 more firmly connected and more durable in plugging, in this embodiment, an annular bracket 14 with a specification matched with the bottom surface of the cylindrical filtering device 4 is arranged at the bottom end of the cylindrical filtering device 4, the annular bracket 14 is arranged in the circumferential direction of the bouncing core column, four second connecting rods 15 are fixedly connected between the annular bracket 14 and the sealing cover plate 5, the four second connecting rods 15 are evenly arranged around the bouncing core column, the second connecting rods 15 are embedded in the cylindrical filtering device 4, and water flow can pass through gaps of the annular bracket 14.

When water needs to be drained, after a user presses the closed cover plate 5, the telescopic column 7 of the bouncing core column extends upwards, the closed cover plate 5 bounces upwards, the filtering device 4 is pulled out upwards from the water inlet 2 along with the closed cover plate 5, the lower edge of the filtering device 4 after being pulled out is not higher than the upper edge of the water inlet 2, and the outer side wall of the filtering device 4 is tightly attached to the inner side wall of the water inlet 2 in the whole pulling-out process; the water flow enters the filtering device 4 from the side surface of the filtering device 4 exposed above the water inlet 2, is filtered by the filtering device 4 and then flows into the water outlet 3; when the water does not need to be drained, after the user presses the sealing cover plate 5 again, the telescopic column 7 of the bouncing core column contracts downwards, the filtering device 4 is inserted into the water inlet 2 along with the sealing cover plate 5, and the sealing cover plate 5 closes and seals the water inlet 2 downwards.

The beneficial effect of this embodiment is the same as the embodiment, and the difference lies in, after introducing the spring stem, the switch operation is more convenient.

EXAMPLE five

Referring to fig. 5, the rest of the embodiment is the same as the first embodiment, except that the filtering device 4 is in a sheet shape, longitudinally and annularly arranged below the edge of the closed cover plate 5 along the vertical direction, and the top of the filtering device is fixedly connected with the bottom of the closed cover plate 5; the sheet-shaped filtering device 4 is surrounded under the closed cover plate 5 to form a cylinder shape, and the specification of the outer side wall of the filtering device is matched with that of the water inlet 2; in this embodiment, the water inlet 2 is circular, and the sheet-shaped filtering device 4 surrounds a cylinder below the sealing cover plate 5; the top surface of the cylindrical filtering device 4 is fixedly connected with the closed cover plate 5, and the specification of the outer side surface is matched with the water inlet 2.

The bottom surface of the closed cover plate 5 is fixedly connected with a bouncing core column in the longitudinal direction, the bouncing core column is arranged in the center of the cylindrical filtering device 4 and comprises a lower fixed column 6 and an upper telescopic column 7, and the telescopic column 7 is fixedly connected with the closed cover plate 5; the fixed column 6 is detachably connected with the inner wall of the concave filter chamber 1 or the inner wall of a drain pipe 9 connected with the drain port 3 through a support frame 8. The water flow can pass through the gap of the support frame 8.

In this embodiment, for making slice filter equipment 4 is more firmly durable when the plug be provided with the stainless steel rack on cylinder filter equipment 4's the inner wall, the side of stainless steel rack with the bonding of 4 inner walls of cylinder filter equipment links firmly, the top of stainless steel rack links firmly with closing apron 5.

When the filter is used specifically, the sheet-shaped filter device 4 longitudinally and circularly arranged below the edge of the closed cover plate 5 along the vertical direction can be PP cotton or sponge, and can also be a stainless steel filter screen, and when the stainless steel filter screen is adopted, the diameter of meshes of the stainless steel filter screen is less than or equal to 2 mm.

When water needs to be drained, after a user presses the closed cover plate 5, the telescopic column 7 of the bouncing core column extends upwards, the closed cover plate 5 bounces upwards, the filtering device 4 is pulled out upwards from the water inlet 2 along with the closed cover plate 5, the lower edge of the filtering device 4 after being pulled out is not higher than the upper edge of the water inlet 2, and the outer side wall of the cylindrical filtering device 4 is tightly attached to the inner side wall of the water inlet 2 in the whole pulling-out process; the water flow enters the filtering device 4 from the side surface of the filtering device 4 exposed above the water inlet 2, is filtered by the filtering device 4 and then flows into the water outlet 3; when the water does not need to be drained, after the user presses the sealing cover plate 5 again, the telescopic column 7 of the bouncing core column contracts downwards, the filtering device 4 is inserted into the water inlet 2 along with the sealing cover plate 5, and the sealing cover plate 5 closes and seals the water inlet 2 downwards.

EXAMPLE six

Referring to fig. 6, the other steps are the same as the first embodiment, except that the circumferential direction of the water inlet 2 is provided with a flow guide plate 11, the height of the bottom surface of the flow guide plate 11 gradually increases from the side close to the water inlet 2 to the side far from the water inlet 2, and the flow guide plate 11 guides and accelerates the water flow to enter the water inlet 2.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a downcomer water inlet device with filtering capability, includes concave filter chamber (1), the top of concave filter chamber (1) is provided with water inlet (2), and the bottom is provided with outlet (3), its characterized in that be provided with filter equipment (4) in concave filter chamber (1), filter equipment (4) cover outlet (3), filter equipment (4) filter follow water inlet (2) flow direction the rivers in outlet (3), filter equipment (4) are three-dimensional porous elasticity drainage material.

2. The sewer pipe water inlet device with the filtering function of claim 1, wherein the stereoscopic porous elastic water filtering material is PP cotton or sponge.

3. A sewer pipe water inlet device with filtering function as claimed in claim 1, characterized in that a closing cover plate (5) is provided at said water inlet (2), said closing cover plate (5) covers said water inlet (2); when water needs to be drained, a user lifts the closed cover plate (5), and water is filtered by the filtering device (4) in the concave filtering chamber (1) and then is drained from the water outlet (3); when the water does not need to be drained, a user only needs to cover the closed cover plate (5) at the water inlet (2).

4. The sewer pipe water inlet device with filtering function of claim 3, characterized in that the bottom surface of the sealing cover plate (5) is fixedly connected with a bouncing column longitudinally, the bouncing column comprises a lower fixed column (6) and an upper telescopic column (7), and the telescopic column (7) is fixedly connected with the sealing cover plate (5); the fixed column (6) penetrates through the filtering device (4) and is detachably connected with the inner wall of the concave filtering chamber (1) or the drainage outlet (3) through a support frame (8); a soft sealing ring (10) is arranged between the sealing cover plate (5) and the water inlet (2); when water needs to be drained, after a user presses the closed cover plate (5), the telescopic column (7) of the bouncing core column extends upwards, the closed cover plate (5) bounces upwards, and water flows into the water outlet (3) after being filtered by the filtering device (4) on the side face of the bouncing core column in the concave filtering chamber (1); when the water does not need to be drained, after the user presses the sealing cover plate (5) again, the telescopic column (7) of the bouncing core column contracts downwards, and the sealing cover plate (5) closes and seals the water inlet (2) downwards.

5. The sewer pipe water inlet device with filtering function as claimed in claim 3, characterized in that said filtering device (4) is fixedly connected with said closing cover plate (5), said filtering device (4) is in the shape of a column, and the size of said filtering device is matched with that of said water inlet (2); when water needs to be drained, a user lifts the closed cover plate (5) upwards, the filtering device (4) is pulled out upwards from the water inlet (2) along with the closed cover plate (5), the lower edge of the filtering device (4) after being pulled out is not higher than the upper edge of the water inlet (2), and the outer side wall of the filtering device (4) is tightly attached to the inner side wall of the water inlet (2) in the whole pulling-out process; the water flow enters the filtering device (4) from the side surface of the filtering device (4) exposed above the water inlet (2), and is downwards discharged from the water outlet (3) after being filtered by the filtering device (4); when the water does not need to be drained, a user presses the closed cover plate (5) downwards, the filtering device (4) is inserted into the water inlet (2) along with the closed cover plate (5), and the closed cover plate (5) is closed downwards to cover the water inlet (2).

6. The sewer pipe water inlet device with filtering function as claimed in claim 3, characterized in that said filtering device (4) is fixedly connected with said closing cover plate (5), said filtering device (4) is in the shape of a column, and the size of said filtering device is matched with that of said water inlet (2); the bottom surface of the closed cover plate (5) is fixedly connected with a bouncing core column in the longitudinal direction, the bouncing core column comprises a lower fixed column (6) and an upper telescopic column (7), and the telescopic column (7) is fixedly connected with the closed cover plate (5); the fixed column (6) penetrates through the filtering device (4) and is detachably connected with the inner wall of the concave filtering chamber (1) or the drainage outlet (3) through a support frame (8); a soft sealing ring (10) is arranged between the sealing cover plate (5) and the water inlet (2); when water needs to be drained, after a user presses the closed cover plate (5), the telescopic column (7) of the bouncing core column extends upwards, the closed cover plate (5) bounces upwards, the filtering device (4) is pulled out upwards from the water inlet (2) along with the closed cover plate (5), the lower edge of the filtering device (4) after being pulled out is not higher than the upper edge of the water inlet (2), and the outer side wall of the filtering device (4) is tightly attached to the inner side wall of the water inlet (2) in the whole pulling-out process; the water flow enters the filtering device (4) from the side surface of the filtering device (4) exposed above the water inlet (2), and flows into the water outlet (3) after being filtered by the filtering device (4); when the water does not need to be drained, after the user presses the sealing cover plate (5) again, the telescopic column (7) of the bouncing core column contracts downwards, the filtering device (4) is inserted into the water inlet (2) along with the sealing cover plate (5), and the sealing cover plate (5) closes and seals the water inlet (2) downwards.

7. The sewer pipe water inlet device with the filtering function as claimed in claim 3, characterized in that the filtering device (4) is in a sheet shape, is longitudinally and annularly arranged below the edge of the closed cover plate (5) along the vertical direction, and the top of the filtering device is fixedly connected with the bottom of the closed cover plate (5); the flaky filtering device (4) is surrounded under the closed cover plate (5) to form a cylinder shape, and the specification of the outer side wall of the flaky filtering device is matched with that of the water inlet (2); the bottom surface of the closed cover plate (5) is longitudinally and fixedly connected with a bouncing core column, the bouncing core column comprises a fixed column (6) below and a telescopic column (7) above, the telescopic column (7) is fixedly connected with the closed cover plate (5), and the fixed column (6) is detachably connected with the inner wall of the concave filter chamber (1) or a drain pipe (9) connected with the drain port (3) through a support frame (8); a soft sealing ring (10) is arranged between the sealing cover plate (5) and the water inlet (2); when water needs to be drained, after a user presses the closed cover plate (5), the telescopic column (7) of the bouncing core column extends upwards, the closed cover plate (5) bounces upwards, the filtering device (4) is pulled out upwards from the water inlet (2) along with the closed cover plate (5), the lower edge of the filtering device (4) after being pulled out is not higher than the upper edge of the water inlet (2), and the outer side wall of the filtering device (4) is tightly attached to the inner side wall of the water inlet (2) in the whole pulling-out process; the water flow enters the filtering device (4) from the side surface of the filtering device (4) exposed above the water inlet (2), and flows into the water outlet (3) after being filtered by the filtering device (4); when the water does not need to be drained, after the user presses the sealing cover plate (5) again, the telescopic column (7) of the bouncing core column contracts downwards, the filtering device (4) is inserted into the water inlet (2) along with the sealing cover plate (5), and the sealing cover plate (5) closes and seals the water inlet (2) downwards.

8. The sewer pipe water inlet device with the filtering function is characterized in that the water inlet (2) is circumferentially provided with a flow guide plate (11), the height of the bottom surface of the flow guide plate (11) gradually increases from the side close to the water inlet (2) to the side far away from the water inlet (2), and the flow guide plate (11) guides and accelerates the water flow to enter the water inlet (2).

9. A sewer inlet device with filtering function as claimed in claim 1, characterized in that in said concave filtering chamber (1), the top surface of said filtering means (4) covers the inlet (2), and the edge of the top surface of said filtering means (4) is flush with the edge of said inlet (2).

10. A sewer inlet device with filtering function according to claim 1, characterized in that the top surface of said filtering means (4) is plane, or convex, or concave, or wave-shaped.