Municipal drainage structure

Abstract

The utility model discloses a municipal drainage structure which comprises a drainage tank arranged at the mouth of a drainage well, and the drainage tank comprises a fixed shell and a U-shaped filter screen arranged in the fixed shell in a sliding mode. The fixed shell is fixedly arranged at a wellhead of the drainage well; a plurality of drainage holes are formed in the side wall and the bottom of the filter screen, a spring is arranged outside the filter screen, and the two ends of the spring are connected with the filter screen and the fixed shell respectively. The situation that the water level rises rapidly due to the fact that the filter screen cannot be used after the bottom of the filter screen is blocked can be avoided, when the bottom of the filter screen is blocked, the filter screen moves downwards relative to the fixed shell, and emergency drainage is conducted through the drainage holes in the side face of the filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal drainage engineering, and particularly relates to a municipal drainage structure. Background Art

[0002] Municipal roads reach all regions of the city, are used for urban transportation and pedestrians, facilitate residents' lives, work and cultural and entertainment activities, and are connected to roads outside the city to bear the external traffic. Urban road drainage refers to the measures taken to drain the precipitation on the urban road surface.

[0003] In the existing drainage trough set on the road, during the drainage process, some sundries with larger volumes are blocked by the filter net located at the notch of the drainage trough. Such a structure is prone to the situation that the filter net is blocked and water cannot be drained, resulting in a rapid rise in the water accumulation level. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a municipal drainage structure, which can avoid the situation that the water level rises rapidly when the bottom of the filter net is blocked and cannot be used. When the bottom of the filter net of the utility model is blocked, the filter net moves downward relative to the fixed shell, and emergency drainage is carried out through the drainage holes on the side of the filter net.

[0005] The purpose of the utility model is realized by the following technical solutions:

[0006] A municipal drainage structure includes a drainage trough arranged at the wellhead of a drainage well. The drainage trough includes a fixed shell and a concave filter net slidably arranged in the fixed shell;

[0007] The fixed shell is fixedly arranged at the wellhead of the drainage well;

[0008] A plurality of drainage holes are arranged on the side wall and bottom of the filter net. A spring is arranged outside the filter net, and two ends of the spring are respectively connected with the filter net and the fixed shell.

[0009] Further, the cross-section of the fixed shell is square.

[0010] Further, the cross-section of the fixed shell is circular, and the filter net is a cylindrical shell structure.

[0011] Further, a baffle is arranged at the top of the filter net. At least two sliding grooves are arranged along the circumference on the inner wall of the fixed shell. The baffle is slidably arranged in the sliding grooves, and two ends of the spring are respectively fixedly connected with the bottom of the sliding groove and the baffle.

[0012] Further, an annular support frame is fixedly arranged on the inner wall of the drainage well. The inner diameter of the support frame is smaller than the outer diameter of the fixed shell, and the bottom of the fixed shell is arranged on the support frame.

[0013] Further, the support frame is made of stainless steel.

[0014] Further, the cross-section of the support frame is triangular.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model can avoid the situation where the water level rises rapidly when the bottom of the filter screen is blocked and cannot be used. When the bottom of the filter screen of the present utility model is blocked, the filter screen moves downward relative to the fixed housing, and emergency drainage is carried out through the drainage holes on the side of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a drainage trough in the prior art;

[0018] Figure 2 is a schematic overall structural diagram of a municipal drainage structure;

[0019] Figure 3 is Figure 2 an enlarged schematic diagram of a partial area A in

[0020] Figure 4 is a schematic diagram of the municipal drainage structure when the bottom of the filter screen is blocked;

[0021] Figure 5 is Figure 4 an enlarged schematic diagram of a partial area B in

[0022] In the figure, 1, drainage well; 2, fixed housing; 3, filter screen; 4, drainage hole; 5, spring; 6, baffle; 7, sliding groove; 8, support frame; 9, drainage trough. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0024] Referring to Figures 2 - 5 , the present utility model provides a technical solution:

[0025] Embodiment:

[0026] As Figures 2 - 5 shown, a municipal drainage structure includes a drainage trough 9 provided at the wellhead of the drainage well 1. The drainage trough 9 includes a fixed housing 2 and a concave-shaped filter screen 3 slidably disposed within the fixed housing 2;

[0027] The fixed housing 2 is fixedly arranged at the wellhead of the drainage well 1;

[0028] As Figure 3 and Figure 5 shown, a plurality of drain holes 4 are provided on the side wall and bottom of the filter screen 3, a spring 5 is arranged outside the filter screen 3, and both ends of the spring 5 are respectively connected to the filter screen 3 and the fixed housing 2.

[0029] The cross-section of the fixed housing 2 is circular, and the filter screen 3 is a cylindrical housing structure. (The cross-section of the fixed housing 2 can also be square, and the corresponding filter screen 3 is also a square housing structure. Setting the filter screen 3 to be square can increase the volume ratio of the filter screen 3.)

[0030] A baffle 6 is provided at the top of the filter screen 3, at least two sliding grooves 7 are provided along the circumference on the inner wall of the fixed housing 2, the baffle 6 is slidably arranged in the sliding grooves 7, and both ends of the spring 5 are respectively fixedly connected to the bottom of the sliding grooves 7 and the baffle 6.

[0031] Working principle: During normal filtration, sundries are intercepted inside the filter screen 3, and water flows into the drainage well 1 through the bottom of the filter screen 3.

[0032] When the bottom of the filter screen 3 is blocked, the sundries and liquid level inside the filter screen 3 rise. When the weight borne by the filter screen 3 becomes larger and is greater than the elastic force of the spring 5, the filter screen 3 automatically moves downward. When the filter screen 3 moves downward, the drain holes 4 on the side wall of the filter screen 3 are located below the fixed housing 2. At this time, even if the bottom of the filter screen 3 is blocked, the filter screen 3 can still filter and drain water normally.

[0033] The utility model can avoid the situation that the water level rises rapidly due to the inability to use after the bottom of the filter screen 3 is blocked. When the bottom of the filter screen 3 of the utility model is blocked, the filter screen 3 moves downward relative to the fixed housing 2, and emergency drainage is carried out through the drain holes 4 on the side of the filter screen 3.

[0034] Furthermore, an annular support frame 8 is fixedly arranged on the inner wall of the drainage well 1. The inner diameter of the support frame 8 is smaller than the outer diameter of the fixed housing 2, and the bottom of the fixed housing 2 is arranged on the support frame 8; the support frame 8 is made of stainless steel; the cross-section of the support frame 8 is triangular. With such a setting, the fixed housing can be vertically placed into the drainage well and supported by the support frame. When the filter screen is blocked, only the fixed housing and the filter screen need to be pulled out as a whole to carry out the filter screen dredging work.

[0035] The above are only the preferred embodiments of the present utility model. It should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the concept described herein through the above teachings or the technology or knowledge in the relevant field. And the changes and alterations made by those skilled in the art that do not depart from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A municipal drainage structure, comprising a drainage trough arranged at the wellhead of a drainage well, characterized in that: The drainage trough comprises a fixed shell, and a concave-shaped filter screen slidably arranged in the fixed shell; The fixed housing is fixedly arranged at the wellhead of the drainage well; The side wall and the bottom of the filter are provided with a plurality of drainage holes, and a spring is provided outside the filter, and two ends of the spring are respectively connected with the filter and the fixed shell.

2. The municipal drainage structure according to claim 1, characterized in that: The cross section of the fixed housing is square.

3. The municipal drainage structure according to claim 1, characterized in that: The cross section of the fixed shell is circular, and the filter screen is a cylindrical shell structure.

4. The municipal drainage structure according to claim 3, characterized in that: A baffle is provided on the top of the filter screen, and at least two sliding grooves are circumferentially provided on the inner wall of the fixed shell. The baffle is slidably arranged in the sliding groove, and the two ends of the spring are fixedly connected to the bottom of the sliding groove and the baffle respectively.

5. The municipal drainage structure according to claim 3, characterized in that: An annular support frame is fixedly provided on the inner wall of the drainage well, the inner diameter of the support frame is smaller than the outer diameter of the fixed shell, and the bottom of the fixed shell is arranged on the support frame.

6. The municipal drainage structure according to claim 5, characterized in that: The supporting frame is made of stainless steel.

7. The municipal drainage structure according to claim 5, characterized in that: The cross section of the support frame is triangular.

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