Rainwater discarding filter device

Abstract

The utility model discloses a rainwater discarding filter device which comprises a three-way pipe shell and a clear water pipe, the clear water pipe is fixedly communicated with the upper end of the three-way pipe shell, a double-layer filter screen is arranged in the three-way pipe shell, the double-layer filter screen comprises a semi-cylindrical filter screen and an arc-shaped filter screen, the semi-cylindrical filter screen is installed on the inner wall of the three-way pipe shell in an attached mode, and the arc-shaped filter screen is installed on the outer wall of the three-way pipe shell. The semi-cylindrical filter screen is arranged on the inner side of the clear water pipe, and the semi-cylindrical filter screen is fixedly connected with the arc-shaped filter screen; according to the rainwater discarding filter device, through the obliquely-arranged large-aperture arc-shaped filter screen, meshes in the arc-shaped filter screen and the flowing direction of impurity garbage in the three-way pipe shell are staggered, large-particle impurity garbage can be blocked more efficiently, and then through cooperation with the small-aperture semi-cylindrical filter screen, the rainwater discarding effect is improved. Small-particle impurity garbage is filtered out on the rainwater filtered by the arc-shaped filter screen again, double-layer graded filtering is achieved, meshes in the semi-cylindrical filter screen and the arc-shaped filter screen can be effectively prevented from being blocked, and the rainwater filtering precision is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rainwater filtering, in particular to a rainwater discard flow filter device. Background Art

[0002] With the acceleration of urbanization, the progress of urban construction is also constantly strengthening, and the pressure on urban drainage is also increasing. As a new type of rainwater treatment tool, the rainwater waste flow filtration device can effectively reduce the urban drainage pressure and protect the water environment. Its basic principle is to discharge the rainwater directly into the underground reservoir after passing through the filtration device without passing through the sewage treatment plant, thereby saving land resources and reducing water pollution.

[0003] At present, generally, only one layer of stainless steel filter is arranged on the inner side of the outlet pipe on the shell of the rainwater discarding filter device. However, the size of the stainless steel filter is fixed. If the mesh size of the single-layer filter is small, the mesh is easily blocked by large particles of impurities and garbage. If the mesh size is large, the filtering accuracy of the filter is small. In order to avoid clogging of the filter, the mesh size of the filter in the general rainwater discarding filter device is moderate; therefore, the filtering accuracy of the existing rainwater discarding filter device is generally poor. Utility Model Content

[0004] The utility model aims to solve the problem of poor filtering accuracy of the rainwater discard flow filtering device in the prior art, and proposes a rainwater discard flow filtering device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A rainwater waste flow filter device comprises a three-way pipe shell and a clean water pipe, wherein the clean water pipe is fixedly connected to the upper end of the three-way pipe shell, and a double-layer filter screen is arranged in the three-way pipe shell;

[0007] The double-layer filter screen includes a semi-cylindrical filter screen and an arc-shaped filter screen. The semi-cylindrical filter screen is fitted on the inner wall of the three-way pipe shell, and the semi-cylindrical filter screen is arranged on the inner side of the clean water pipe. The semi-cylindrical filter screen and the arc-shaped filter screen are fixedly connected.

[0008] Preferably, the upper ends of the semi-cylindrical filter screen and the arc-shaped filter screen are fixedly connected with a cylindrical handle, and the cylindrical handle and the upper end inner cavity of the three-way pipe shell are embedded with each other.

[0009] Preferably, the lower end of the three-way tube shell is fixedly connected with a sewage pipe, the inner diameter of the sewage pipe is smaller than the inner diameter of the clean water pipe, and a water purification seat is slidably installed in the inner cavity of the lower end of the three-way tube shell.

[0010] Preferably, a cross nut is provided below the water purification seat, the cross nut is threadedly connected to the inner cavity of the lower end of the three-way tube shell, and a limiting ring is provided above the water purification seat, and the limiting ring is fixedly connected to the inner wall of the three-way tube shell.

[0011] Preferably, the upper end surface of the water purification seat is provided with a downwardly concave spherical groove, one side of the spherical groove is connected to a drainage groove, and the drainage groove and the sewage pipe are connected to each other.

[0012] Preferably, the upper end of the three-way tube shell is also fixedly connected to a water inlet pipe, and an upper cover is fixedly installed on the top of the three-way tube shell. The height of the water inlet pipe is higher than the height of the clean water pipe. Two limit blocks are fixedly installed on the inner wall of the three-way tube shell, and the two limit blocks are respectively arranged on both sides of the semi-cylindrical filter.

[0013] Compared with the prior art, the utility model provides a rainwater discard filter device, which has the following beneficial effects:

[0014] 1. The rainwater discard filter device, through the inclined large-aperture arc filter, staggers the mesh holes in the arc filter and the flow direction of impurities and garbage in the three-way tube shell, so that the impurities and garbage in the rainwater in the three-way tube shell cannot be aligned with the mesh holes in the arc filter, thereby more effectively blocking large particles of impurities and garbage, and then cooperates with a small-aperture semi-cylindrical filter to filter small particles of impurities and garbage from the rainwater filtered by the arc filter again. The double-layer graded filtration can effectively avoid the mesh holes in the semi-cylindrical filter and the arc filter from being blocked, and the accuracy of rainwater filtration is also higher.

[0015] 2. This rainwater discard filter device can completely discharge the residual rainwater in the three-way pipe shell through the spherical groove and drainage groove on the water purification seat, thereby effectively reducing the erosion of the three-way pipe shell and the water purification seat caused by acidic substances in the rainwater, thereby increasing the service life of the rainwater discard filter device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a rainwater discard filter device proposed by the utility model;

[0017] Figure 2 An exploded view of a rainwater discard filter device proposed by the utility model;

[0018] Figure 3 A cross-sectional view of a rainwater discard filter device proposed in the utility model Figure 1 ;

[0019] Figure 4 A cross-sectional view of a rainwater discard filter device proposed in the utility model Figure 2 .

[0020] In the figure: 1. three-way pipe shell; 2. upper cover; 3. water inlet pipe; 4. clean water pipe; 5. sewage pipe; 6. water purification seat; 7. positioning column; 8. spherical groove; 9. drainage groove; 10. cylindrical handle; 11. semi-cylindrical filter; 12. arc filter; 13. limit ring; 14. limit block; 15. cross nut. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Reference Figure 1-4 A rainwater discard filter device comprises a three-way pipe shell 1, which is arranged upright, and the top of the three-way pipe shell 1 is sealed and connected with an upper cover 2, and the upper cover 2 and the three-way pipe shell 1 are fixedly connected, and the upper left side of the three-way pipe shell 1 is fixedly connected with a water inlet pipe 3, and the upper right side of the three-way pipe shell 1 is fixedly connected with a clean water pipe 4, and the lower front side of the three-way pipe shell 1 is fixedly connected with a sewage pipe 5, and the inner diameters of the clean water pipe 4 and the water inlet pipe 3 are the same, and the height of the clean water pipe 4 is not higher than the height of the water inlet pipe 3;

[0024] The inner diameter of the sewage pipe 5 is 1 / 3 of the inner diameter of the water inlet pipe 3, that is, the cross-section of the water inlet pipe 3 and the clean water pipe 4 that can pass rainwater is much larger than the cross-section of the sewage pipe 5 that can pass rainwater. That is, when the cross-section of rainwater passing through the water inlet pipe 3 is larger than the cross-section of rainwater passing through the sewage pipe 5, the clean water pipe 4 and the sewage pipe 5 will drain water at the same time, which is mainly used to control the direction of rainwater flow.

[0025] In this embodiment, a water purification seat 6 is installed at the lower end of the three-way tube shell 1. The overall shape of the water purification seat 6 is disc-shaped. Four positioning columns 7 are fixedly installed on the periphery of the water purification seat 6. The water purification seat 6 is sealed and slidably installed on the lower end of the three-way tube shell 1 through the four positioning columns 7. A limit ring 13 is provided on the upper part of the water purification seat 6 for extrusion contact. The limit ring 13 is fixedly connected to the inner wall of the three-way tube shell 1. A cross nut 15 is contacted and connected to the lower part of the water purification seat 6. The outer ring of the cross nut 15 is threadedly connected to the inner wall of the lower end of the three-way tube shell 1.

[0026] The upper end surface of the water purification seat 6 is provided with a downwardly concave spherical groove 8, the lowest point of the spherical groove 8 is set on the central axis of the water purification seat 6, and a drainage groove 9 is set on one side of the spherical groove 8. The drainage groove 9 is set in the radial direction of the water purification seat 6, and the head end of the drainage groove 9 is set at the lowest point of the spherical groove 8, and the lower bottom surface of the drainage groove 9 from the head end to the end gradually tilts downward, and the drainage groove 9 is seamlessly connected with the sewage pipe 5 on the three-way pipe shell, that is, after the water inlet pipe 3 on the three-way pipe shell 1 stops inletting water, the three-way pipe shell 1 can use the spherical groove 8 and the drainage groove 9 on the water purification seat 6 to completely discharge the rainwater in the three-way pipe shell 1.

[0027] In this embodiment, a double-layer filter screen is further provided in the three-way tube shell 1. The double-layer filter screen is composed of a cylindrical handle 10. The lower end of the cylindrical handle 10 is cylindrical, and the lower end of the cylindrical handle 10 and the inner wall of the three-way tube shell 1 are interlocked to cover the inlet end of the clean water pipe 4. A semi-cylindrical filter screen 11 is provided on one side of the cylindrical handle 10. The outer wall of the semi-cylindrical filter screen 11 and the inner wall of the right end of the three-way tube shell 1 are in contact with each other. An arc filter screen 12 is fixedly installed between the lower end of the left side of the cylindrical handle 10 and the lower end of the semi-cylindrical filter screen 11. The two side edges and the lower side edges of the semi-cylindrical filter screen 11 are fixedly connected to the two side edges and the lower side edges of the arc filter screen 12 respectively.

[0028] Limit blocks 14 are provided on both sides of the lower end of the semi-cylindrical filter 11, and the limit blocks 14 are fixedly connected to the inner wall of the three-way pipe shell 1. The two limit blocks 14 are mainly used to limit the installation position of the semi-cylindrical filter 11 in the double-layer filter. The upper end of the cylindrical handle 10 is arranged above the clean water pipe 4 and the water inlet pipe 3, and only a small space is reserved between the top of the cylindrical handle 10 and the lower bottom surface of the upper cover 2 to ensure that the semi-cylindrical filter 11 always blocks the clean water pipe 4, that is, rainwater entering the water inlet pipe 3 needs to be filtered twice by the arc filter 12 and the semi-cylindrical filter 11 before it can enter the clean water pipe 4 for discharge. The mesh aperture of the arc filter 12 is 5 mm, and the mesh aperture of the semi-cylindrical filter 11 is 0.5 mm, that is, the mesh aperture of the arc filter 12 is larger than the mesh aperture of the semi-cylindrical filter 11.

[0029] According to the utility model, when a sufficient amount of rainwater is discharged into the water inlet pipe 3 by using the rainwater discarding filter device, that is, the cross-section of the water inlet pipe 3 and the clean water pipe 4 through which rainwater passes is much larger than the cross-section of the sewage pipe 5 through which rainwater passes, the rainwater first enters the three-way pipe shell 1, and as the rainwater in the three-way pipe shell 1 accumulates and reaches the height of the clean water pipe 4, the rainwater entering the water inlet pipe 3 will be discharged through the clean water pipe 4 and the sewage pipe 5 in turn;

[0030] When the rainwater enters the clean water pipe 4 from the water inlet pipe 3 and the inner cavity of the three-way pipe shell 1 in turn, the impurities and garbage in the rainwater will settle to the lower right in a parabola, and the arc filter 12 is inclined, and the mesh holes in the arc filter 12 and the flow direction of the impurities and garbage in the three-way pipe shell 1 are staggered, which makes the arc filter 12 more efficient in blocking the impurities and garbage, and the mesh diameter of the arc filter 12 is 5mm, that is, the arc filter 12 can block and filter the impurities and garbage with a size of more than 5mm in the rainwater, that is, the semi-cylindrical filter 11 and The size of the impurities and garbage in the rainwater passing through the arc filter 12 is less than 5mm, and the semi-cylindrical filter 11 with a pore size of 0.5mm blocks and filters the impurities and garbage below 0.5mm in the rainwater again. The graded filtration can effectively prevent the mesh holes in the semi-cylindrical filter 11 and the arc filter 12 from being blocked, and the filtering accuracy is higher. The filtered rainwater is discharged into the underground reservoir, which reduces the effect of water pollution and can be used for greening watering. The impurities and garbage above 0.5mm will also sink by their own weight and be discharged from the sewage pipe 5;

[0031] When the water inlet pipe 3 on the three-way pipe shell 1 stops taking in water, the spherical groove 8 and the drainage groove 9 on the water purification seat 6 can be used to completely discharge the residual rainwater in the three-way pipe shell 1. As is well known, rainwater contains a large amount of acidic substances, which will corrode the three-way pipe shell 1 and the water purification seat 6. That is, after the residual rainwater in the three-way pipe shell 1 is completely discharged through the water purification seat 6, the service life of the rainwater discard filter device can be increased.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rainwater waste flow filter device, comprising a three-way pipe shell (1) and a clean water pipe (4), wherein the clean water pipe (4) is fixedly connected to the upper end of the three-way pipe shell (1), characterized in that: A double-layer filter screen is arranged inside the three-way pipe shell (1); The double-layer filter screen comprises a semi-cylindrical filter screen (11) and an arc-shaped filter screen (12); the semi-cylindrical filter screen (11) is fitted on the inner wall of the three-way pipe shell (1), and the semi-cylindrical filter screen (11) is arranged on the inner side of the clean water pipe (4); the semi-cylindrical filter screen (11) and the arc-shaped filter screen (12) are fixedly connected.

2. A rainwater discard filter device according to claim 1, characterized in that: The upper ends of the semi-cylindrical filter screen (11) and the arc-shaped filter screen (12) are fixedly connected with a cylindrical handle (10), and the cylindrical handle (10) and the upper inner cavity of the three-way pipe shell (1) are interlocked.

3. A rainwater discard filter device according to claim 1, characterized in that: The lower end of the three-way pipe shell (1) is fixedly connected to a sewage pipe (5), the inner diameter of the sewage pipe (5) is smaller than the inner diameter of the clean water pipe (4), and a water purification seat (6) is slidably mounted in the inner cavity of the lower end of the three-way pipe shell (1).

4. A rainwater discard filter device according to claim 3, characterized in that: A cross nut (15) is provided below the water purification seat (6), and the cross nut (15) is threadedly connected to the inner cavity of the lower end of the three-way pipe shell (1). A limit ring (13) is provided above the water purification seat (6), and the limit ring (13) is fixedly connected to the inner wall of the three-way pipe shell (1).

5. A rainwater discard filter device according to claim 3, characterized in that: The upper end surface of the water purification seat (6) is provided with a spherical groove (8) that is recessed downwards, one side of the spherical groove (8) is connected to a drainage groove (9), and the drainage groove (9) and the sewage pipe (5) are connected to each other.

6. A rainwater discard filter device according to claim 1, characterized in that: The upper end of the three-way pipe shell (1) is also fixedly connected to a water inlet pipe (3), and a top cover (2) is fixedly installed on the top of the three-way pipe shell (1). The height of the water inlet pipe (3) is higher than the height of the clean water pipe (4). Two limit blocks (14) are fixedly installed on the inner wall of the three-way pipe shell (1), and the two limit blocks (14) are respectively arranged on both sides of the semi-cylindrical filter screen (11).

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