Filtering device of urban water supply and drainage pipeline

Abstract

A filtering device of an urban water supply and drainage pipeline is arranged in the water supply and drainage pipeline, a flange is arranged at an end opening of the water supply and drainage pipeline, an annular groove is formed in the outer side circular face of the flange, and an inner sleeve is arranged in the water supply and drainage pipeline; the outer circular face of the inner sleeve is sleeved with a conical filter cartridge, a plurality of filter holes are formed in the conical filter cartridge, the conical filter cartridge is provided with a bottom face and a conical tip end, the axis direction from the bottom face to the conical tip end is opposite to the water flow direction of the water supply and drainage pipeline, the conical filter cartridge is in sliding connection with the inner sleeve, and the bottom face of the conical filter cartridge is elastically connected with the inner sleeve through an elastic piece. Conveying water in the water supply and drainage pipeline can be filtered through the conical filtering cylinder, the filtering area can be greatly increased, the conical filtering cylinder can move or swing in the water supply and drainage pipeline within a small range according to the flow speed of the conveying water flow, particles or impurities in filtering holes of the conical filtering cylinder can be vibrated to fall off, and the filtering effect is good. And the phenomenon that large particles or impurities in conveyed water directly block the filtering holes can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply and drainage pipelines, and particularly relates to a filtering device for urban water supply and drainage pipelines. Background Art

[0002] Urban water supply and drainage pipelines are a crucial part of urban infrastructure, responsible for transporting water resources to residents and industrial users, and at the same time collecting and treating wastewater. To protect the water supply and drainage pipeline system, improve water quality, and reduce blockage phenomena, it is usually necessary to install a filtering structure in the water supply and drainage pipelines.

[0003] In the existing water supply and drainage pipelines, usually only a filter screen is installed at the port of the pipeline, and the particles or impurities in the water supply and drainage are intercepted by the filter screen. However, the filter screen is generally installed perpendicular to the port of the pipeline, with a limited filtering area, and larger particles or impurities are intercepted at the filter screen opening and will not fall down by themselves, which will directly block the filtering holes of the filter screen. When more filter screens are blocked, it will affect the water flow in the water supply and drainage pipelines. Summary of the Utility Model

[0004] To solve the technical problems existing in the above background art, the utility model provides a filtering device for urban water supply and drainage pipelines.

[0005] The technical solution of the utility model is as follows:

[0006] A filtering device for urban water supply and drainage pipelines is arranged inside the water supply and drainage pipeline. A flange is provided at the port of the water supply and drainage pipeline, and an annular groove is formed on the outer circular surface of the flange. An inner sleeve is arranged inside the water supply and drainage pipe. One side of the inner sleeve close to the port is detachably connected to the annular groove through an annular baffle, and the axis of the inner sleeve is coaxial with the axis of the water supply and drainage pipe.

[0007] A conical filter cylinder is sleeved on the outer circular surface of the inner sleeve, and a plurality of filtering holes are formed thereon. The conical filter cylinder has a bottom surface and a conical tip, and the axis direction from the bottom surface to the conical tip is opposite to the water flow direction of the water supply and drainage pipeline. The conical filter cylinder is slidably connected to the inner sleeve, and the sliding direction is the length direction of the inner sleeve, and the bottom surface of the conical filter cylinder is elastically connected to the inner sleeve through an elastic member.

[0008] The inner sleeve of the filtering device is used to connect the conical filter cylinder inside the water supply and drainage pipeline. The inner sleeve is connected to the flange through an annular baffle located inside the flange, which is convenient for the disassembly of the conical filter cylinder. The conical filter cylinder can filter the water transported in the water supply and drainage pipeline. Its conical surface can greatly increase the filtering area compared with the flat filter screen in the prior art, and the conical filter cylinder can move or swing within a small range in the water supply and drainage pipeline according to the flow velocity of the transported water flow, and can vibrate and drop the particles or impurities in its filtering holes, which can reduce the phenomenon that large particles or impurities in the transported water directly block the filtering holes and will not affect the filtering effect.

[0009] The specific structure that the above-mentioned conical filter cartridge can achieve small-range movement in water supply and drainage is that the bottom surface of the conical filter cartridge is provided with an outer sleeve sleeved and matched with the inner sleeve, and the end of the outer sleeve is clamped with the end of the inner sleeve.

[0010] Regarding the installation position relationship between the outer sleeve and the inner sleeve, a first retaining ring is provided on the outer side of the end of the inner sleeve away from the annular baffle, and a second retaining ring is provided on the inner side of the end of the outer sleeve away from the bottom surface. The inner diameter of the second retaining ring is smaller than the outer diameter of the first retaining ring.

[0011] To facilitate the rapid reset of the conical filter cartridge after being pushed and moved when the water flow is large, so as to achieve reciprocating movement or shaking, an elastic member is connected between the first retaining ring and the second retaining ring.

[0012] The conical filter cartridge drives the outer sleeve to move or shake on the outside of the inner sleeve. The shaking range is that the inner diameter of the outer sleeve is 1-5 cm larger than the outer diameter of the inner sleeve. This range can vibrate and drop some particles or impurities on the filter net.

[0013] The spacing range in which the above-mentioned conical filter cartridge drives the outer sleeve to be able to move along its axis is that the maximum spacing between the first retaining ring and the second retaining ring along their axes is 2-10 cm.

[0014] To facilitate the rapid collection of the particles or impurities filtered by the conical filter cartridge, a receiving sleeve is threadedly connected to the outer wall of the outer sleeve. The receiving sleeve extends along the axis of the outer sleeve towards the side away from the annular baffle. The receiving sleeve is inserted into the water supply and drainage pipeline and is adapted to it. The outer diameter of the receiving sleeve is adapted to the inner diameter of the water supply and drainage pipeline, and it can be closely attached to the inner wall of the water supply and drainage pipeline, and can also be pulled out of the water supply and drainage pipeline for easy disassembly. The length of the receiving sleeve is 5-20 cm.

[0015] To be able to collect the iron-containing particles or impurities in the conveyed water in the water supply and drainage pipeline, a magnetic adsorption frame is provided on the side of the receiving sleeve away from the annular baffle, and a plurality of magnets are provided on the magnetic adsorption frame.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The conical filter cartridge is arranged at the port of the water supply and drainage pipeline, which is not only convenient for installation and disassembly, but also convenient for cleaning the filtered particles or impurities. Moreover, the conical tip of the conical filter cartridge faces the water flow of the conveyed water in the water supply and drainage pipeline, which can increase the filtering area and facilitate the dispersion of larger particles or impurities on the outer periphery of the bottom surface of the conical filter cartridge without affecting the normal flow of the conveyed water in the water supply and drainage pipeline;

[0018] Moreover, the conical filter cartridge can slide along the axis of the outer sleeve by means of the flow rate of water in the water supply and drainage pipeline, and can reciprocate or shake through the elastic member. The reciprocating movement or shaking of the conical filter cartridge can shake the particles or impurities blocked on its filter holes to break away from the filter holes, reducing the blockage of the filter holes and the blockage of the conical filter cartridge, and preventing the water supply and drainage pipeline from being unable to supply and drain water normally;

[0019] The outer wall of the outer sleeve is threadedly connected with a storage sleeve, and the storage sleeve extends along the axis of the outer sleeve away from the annular baffle, which is convenient for quickly collecting the particles or impurities filtered by the conical filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In the drawings:

[0021] Figure 1 is the first cross-sectional structure schematic diagram;

[0022] Figure 2 is Figure 1 the enlarged structure schematic diagram at A in;

[0023] Figure 3 is the second cross-sectional structure schematic;

[0024] Figure 4 is Figure 3 the enlarged structure schematic diagram at B in;

[0025] Figure 5 is the structure schematic diagram of the storage sleeve and the conical filter cartridge;

[0026] The components represented by the reference numerals in the drawings are:

[0027] 1. Water supply and drainage pipeline; 2. Flange; 201. Annular groove; 3. Inner sleeve; 4. Conical filter cartridge; 401. Bottom surface; 402. Conical tip; 5. Annular baffle; 6. Elastic member; 7. Outer sleeve; 8. First retaining ring; 9. Second retaining ring; 10. Storage sleeve; 11. Magnetic adsorption frame; 12. Magnet. DETAILED DESCRIPTION OF THE INVENTION

[0028] See Figure 1 、 Figure 2 and Figure 3As shown in the figure, a filtering device for urban water supply and drainage pipes is arranged inside the water supply and drainage pipe 1. The port of the water supply and drainage pipe 1 is provided with a flange 2. An annular groove 201 is formed on the outer circular surface of the flange 2. The annular groove 201 is coaxial with the axis of the flange 2. In this embodiment, the depth of the annular groove 201 is 0.5 - 2 cm, and in this embodiment, the depth of 0.5 cm is selected according to the size and thickness of the flange 2. An inner sleeve 3 is arranged inside the water supply and drainage pipe. One side of the inner sleeve 3 close to the port is detachably connected to the annular groove 201 through an annular baffle 5, and the axis of the inner sleeve 3 is coaxial with the axis of the water supply and drainage pipe. The annular baffle 5 is installed in the annular groove 201 through a plurality of fastening bolts. Since two water supply and drainage pipes 1 with flanges 2 of the same diameter need to be connected through the flange 2, the thickness of the annular baffle 5 is set to be less than the depth of the annular groove 201, which does not affect the sealed installation between the two water supply and drainage pipes 1.

[0029] A conical filter cartridge 4 is sleeved on the outer circular surface of the inner sleeve 3, and a plurality of filter holes are formed thereon. The conical filter cartridge 4 has a bottom surface 401 and a conical tip 402. The axial direction from the bottom surface 401 to the conical tip 402 is opposite to the water flow direction of the water supply and drainage pipe 1. The conical filter cartridge 4 is slidably connected to the inner sleeve 3, and the sliding direction is the length direction of the inner sleeve 3. The bottom surface 401 of the conical filter cartridge 4 is elastically connected to the inner sleeve 3 through an elastic member 6.

[0030] See Figure 3 and Figure 4 As shown in the figure, the specific structure that the above conical filter cartridge 4 can move within a small range in the water supply and drainage is that the bottom surface 401 of the conical filter cartridge 4 is provided with an outer sleeve 7 that is sleeved and matched with the inner sleeve 3, and the end of the outer sleeve 7 is clamped with the end of the inner sleeve 3. The conical filter cartridge 4 drives the outer sleeve 7 to move or shake outside the inner sleeve 3. The shaking range is that the inner diameter of the outer sleeve 7 is 1 - 5 cm larger than the outer diameter of the inner sleeve 3. This range can vibrate and drop some particles or impurities on the filter screen. Regarding the installation position relationship between the outer sleeve 7 and the inner sleeve 3, a first retaining ring 8 is arranged on the outer side of one end of the inner sleeve 3 away from the annular baffle 5, and a second retaining ring 9 is arranged on the inner side of one end of the outer sleeve 7 away from the bottom surface 401. The inner diameter of the second retaining ring 9 is smaller than the outer diameter of the first retaining ring 8 to prevent the outer sleeve 7 from detaching from the inner sleeve 3. To facilitate the conical filter cartridge 4 to quickly reset after being pushed and moved when the water flow is large and achieve reciprocating movement or shaking, an elastic member 6 is connected between the first retaining ring 8 and the second retaining ring 9. The elastic member 6 is a compression spring, and the length direction of the compression spring is parallel to the axis of the inner sleeve 3, which is convenient for the outer sleeve 7 and the conical filter cartridge 4 to reset. The spacing range that the above conical filter cartridge 4 drives the outer sleeve 7 to be able to move along its axis is that the maximum spacing between the first retaining ring 8 and the second retaining ring 9 along their axes is 2 - 10 cm. In this embodiment, the maximum spacing between the first retaining ring 8 and the second retaining ring 9 along their axes is selected to be 5 cm. This spacing range can enable the conical filter cartridge 4 and the outer sleeve 7 to move or shake better.

[0031] The function achieved by the above structure is that the inner sleeve 3 of the filtering device is used to connect the conical filter cartridge 4 in the water supply and drainage pipe 1. The inner sleeve 3 is connected to the flange 2 through the annular baffle 5 located in the flange 2, which facilitates the disassembly of the conical filter cartridge 4. The conical filter cartridge 4 can filter the water conveyed in the water supply and drainage pipe 1. Its conical surface can greatly increase the filtering area compared with the flat filter screen in the prior art. Moreover, the conical filter cartridge 4 can move or swing within a small range in the water supply and drainage pipe 1 according to the flow rate of the conveyed water flow, which can vibrate and drop the particles or impurities in its filter holes, reduce the phenomenon that large particles or impurities in the conveyed water directly block the filter holes, and will not affect the filtering effect.

[0032] See Figure 3 and Figure 5 As shown, finally, to facilitate the rapid collection of the particles or impurities filtered by the conical filter cartridge 4, a storage sleeve 10 is threadedly connected to the outer wall of the outer sleeve 7. The storage sleeve 10 extends along the axis of the outer sleeve 7 away from the annular baffle 5. The storage sleeve 10 is inserted into the water supply and drainage pipe 1 and is adapted to it. The outer diameter of the storage sleeve 10 is adapted to the inner diameter of the water supply and drainage pipe 1, can be closely attached to the inner wall of the water supply and drainage pipe 1, and can also be pulled out of the water supply and drainage pipe 1 for easy disassembly. The length of the storage sleeve 10 is 5 - 20 cm. By disassembling the inner sleeve 3 and the outer sleeve 7, the disassembly of the storage sleeve 10 can be realized to collect the larger particles or impurities between the storage sleeve 10 and the conical filter cartridge 4. A magnetic adsorption frame 11 is provided on the side of the storage sleeve 10 away from the annular baffle 5, and a plurality of magnets 12 are provided on the magnetic adsorption frame 11 to collect the iron-containing particles or impurities in the water conveyed in the water supply and drainage pipe 1 by the magnets 12 at different positions.

Claims

1. A filtering device for urban water supply and drainage pipelines, which is arranged inside the water supply and drainage pipeline (1), and a flange (2) is provided at the port of the water supply and drainage pipeline (1), and is characterized in that, An annular groove (201) is provided on the outer circular surface of the flange (2). An inner sleeve (3) is arranged inside the water supply and drainage pipe. One side of the inner sleeve (3) close to the port is detachably connected to the annular groove (201) through an annular baffle (5), and the axis of the inner sleeve (3) is coaxial with the axis of the water supply and drainage pipe. A conical filter cartridge (4) is sleeved on the outer circular surface of the inner sleeve (3), and a plurality of filter holes are formed therein. The conical filter cartridge (4) has a bottom surface (401) and a conical tip (402). The axial direction from the bottom surface (401) to the conical tip (402) is opposite to the water flow direction of the water supply and drainage pipeline (1). The conical filter cartridge (4) is slidably connected to the inner sleeve (3), and the sliding direction is the length direction of the inner sleeve (3). The bottom surface (401) of the conical filter cartridge (4) is elastically connected to the inner sleeve (3) through an elastic member (6).

2. The filtering device for urban water supply and drainage pipes according to claim 1, wherein A jacket (7) sleeved and matched with the inner sleeve (3) is provided on the bottom surface (401) of the conical filter cartridge (4), and the end of the jacket (7) is clamped with the end of the inner sleeve (3).

3. The filtering device for urban water supply and drainage pipes according to claim 2, characterized in that, A first retaining ring (8) is provided on the outer side of one end of the inner sleeve (3) away from the annular baffle (5). A second retaining ring (9) is provided on the inner side of one end of the jacket (7) away from the bottom surface (401). The inner diameter of the second retaining ring (9) is smaller than the outer diameter of the first retaining ring (8).

4. The filtering device for urban water supply and drainage pipelines according to claim 3, characterized in that, The first retaining ring (8) and the second retaining ring (9) are connected through an elastic member (6).

5. The filtering device for urban water supply and drainage pipelines according to claim 4, characterized in that, The inner diameter of the jacket (7) is 1 - 5 cm larger than the outer diameter of the inner sleeve (3).

6. The filtering device for urban water supply and drainage pipelines according to claim 5, wherein, The maximum distance between the first retaining ring (8) and the second retaining ring (9) along their axes is 2 - 10 cm.

7. The filtering device for urban water supply and drainage pipelines according to claim 2, characterized in that, A receiving sleeve (10) is threadedly connected to the outer wall of the jacket (7). The receiving sleeve (10) is inserted into the water supply and drainage pipeline (1) and is adapted thereto. The receiving sleeve (10) extends along the axial direction of the jacket (7) towards the side away from the annular baffle (5).

8. The filtering device for urban water supply and drainage pipes according to claim 7, characterized in that, A magnetic attracting frame (11) is provided on the side of the receiving sleeve (10) away from the annular baffle (5), and a plurality of magnets (12) are provided on the magnetic attracting frame (11).

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