A sponge city sewage interception and backflow prevention overflow well

Abstract

The utility model belongs to the technical field of sponge cities, and discloses a sewage interception and backflow prevention overflow well for sponge cities, including a main body device for collecting water and overflow drainage, wherein a backflow prevention device for floating, pressing and sealing to prevent backflow is arranged in the main body device, and also includes a filtering device for double-layer filtering and staggered synchronous lifting of two layers of filter screens arranged above the backflow prevention device; the filtering device includes a lower supporting edge, a lower fixing frame is arranged above the lower supporting edge, a lower filter basket is installed in the lower fixing frame, an upper supporting edge is arranged above the lower filter basket, and the shapes of the lower fixing frame and the upper supporting edge are staggered with each other. The sewage interception and backflow prevention overflow well for sponge cities described in the utility model is convenient for taking out the lower filter screen for cleaning through the staggered lifting setting; the two layers of filter screens are taken out at the same time through the staggered synchronous lifting setting, which further facilitates the removal of the filter screens; and the extraction is convenient through the setting of the handle.

Description

Technical Field

[0001] The utility model belongs to the technical field of sponge cities, and particularly relates to a sewage interception and backflow prevention overflow well of a sponge city. Background Art

[0002] Sponge city means that the city can adapt to environmental changes and respond to natural disasters like a sponge, absorbing, storing, infiltrating and purifying water when it rains, and releasing and utilizing the stored water when needed. The construction of sponge city is based on the concept of low-impact development, coordinating the systematic nature of natural precipitation, surface water and groundwater, coordinating various links of water recycling such as water supply and drainage, giving full play to the absorption, storage, infiltration and slow release of rainwater by ecological systems such as buildings, roads, green spaces and water systems, controlling rainwater runoff, and realizing an urban development mode of natural accumulation, natural infiltration and natural purification. The construction of sponge city combines natural approaches with artificial measures to maximize the accumulation, infiltration and purification of rainwater in urban areas on the premise of ensuring the safety of urban flood control and drainage. As a supporting facility in the construction of sponge city, overflow wells need to temporarily flow excess water in sponge city projects into natural water bodies (or sewage into rainwater ditches) through overflow pipes in overflow wells to avoid flooding the collection pool and affecting drainage.

[0003] In contrast, the Chinese patent with authorization announcement number CN218933377U discloses a sponge city sewage interception and backflow prevention overflow well, including a well body, a well cover and a drain outlet. A lifting mechanism connected to the well cover is provided at the upper end of the well body, and a filter assembly is provided at the upper part of the well body. The filter assembly includes a fixed cylinder and a multi-stage filter basket. An anti-overflow assembly is installed in the well body between the filter assembly and the drain outlet. The anti-overflow group includes a bracket, a guide cone and a movable float. A guide pipe is installed at the lower end of the guide cone. The upper surface of the movable float is movably abutted against the bottom surface of the guide pipe. The lower surface of the movable float is mounted on the bracket through a buffer mechanism, and the bracket is mounted on the inner wall of the well body.

[0004] The above patent adopts a multi-stage filtration setting to filter rainwater. After long-term use, the filter screen needs to be cleaned, but the lower filter screen is inside the overflow well and is inconvenient to be taken out for cleaning. Therefore, a new device needs to be designed. Utility Model Content

[0005] The utility model aims to provide a sponge city sewage interception and backflow prevention overflow well to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sponge city sewage interception and backflow prevention overflow well, comprising a main device for collecting water and overflow drainage, wherein a non-return device for floating, pressing and sealing to prevent backflow is arranged inside the main device, and further comprising a filtering device arranged above the non-return device for double-layer filtering and staggered synchronous lifting of two layers of filter screens;

[0008] The filtering device includes a lower supporting edge, a lower fixing frame is arranged on the upper part of the lower supporting edge, a lower filter basket is installed in the lower fixing frame, an upper supporting edge is arranged above the lower filter basket, the lower fixing frame and the upper supporting edge are arranged in staggered shapes, an upper fixing frame is arranged on the upper supporting edge, an upper filter basket is installed in the upper fixing frame, two connecting rods are symmetrically arranged on both sides between the upper fixing frame and the lower fixing frame, and handles are arranged on the connecting rods.

[0009] Furthermore: the main device includes a well body, a well cover is arranged on the top of the well body, a sewage pipe is arranged on the front side of the bottom of the well body, and an overflow pipe and a sewage inlet pipe are symmetrically arranged on both sides above the sewage pipe.

[0010] Furthermore: the anti-return device includes two guide plates symmetrically arranged on both sides, a fixing ring is arranged between the guide plates, a pad is arranged under the fixing ring, two slide rails are symmetrically arranged on the front and rear sides of the pad, a pressure plate is slidably installed between the two slide rails, and a floating block is arranged under the pressure plate.

[0011] Furthermore: the upper filter basket is connected to the upper fixing frame by bolts, and the upper filter basket is made of 304 stainless steel.

[0012] Furthermore: the manhole cover is in a grid shape, and the manhole cover is hingedly connected to the manhole body.

[0013] Furthermore: the pad is made of silicone material, and the floating block is made of foam material.

[0014] Compared with the prior art, the beneficial effects are:

[0015] 1. The setting of offset lifting makes it easy to take out the lower filter for cleaning;

[0016] 2. By staggering and synchronously lifting the two layers of filters, the two layers of filters can be taken out at the same time, which further facilitates the removal of the filters;

[0017] 3. The handle makes it easier to take out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a sponge city sewage interception and backflow prevention overflow well described in the utility model;

[0019] Figure 2This is an axonometric diagram of the main device of a sponge city sewage interception and backflow prevention overflow well described in the utility model;

[0020] Figure 3 This is an axonometric diagram of a backflow prevention device for a sponge city sewage interception and backflow prevention overflow well described in the utility model;

[0021] Figure 4 It is an axonometric diagram of a filtering device for a sponge city sewage interception and backflow prevention overflow well described in the utility model.

[0022] In the accompanying drawings, 101, well body; 102, sewage pipe; 103, overflow pipe; 104, sewage inlet pipe; 105, well cover; 201, guide plate; 202, fixing ring; 203, pad; 204, slide rail; 205, pressure plate; 206, floating block; 301, lower supporting edge; 302, lower fixing frame; 303, lower filter basket; 304, upper supporting edge; 305, upper fixing frame; 306, upper filter basket; 307, connecting rod; 308, handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 4 A sponge city sewage interception and backflow prevention overflow well includes a main device for collecting water and overflow drainage. The main device is equipped with a non-return device for floating, pressing and sealing to prevent backflow. It also includes a filtering device arranged above the non-return device for double-layer filtration and staggered synchronous lifting of two layers of filter screens.

[0025] In this embodiment: the main device includes a well body 101, a well cover 105 is arranged on the top of the well body 101, a sewage pipe 102 is arranged on the front side of the bottom of the well body 101, an overflow pipe 103 and a sewage inlet pipe 104 are symmetrically arranged on both sides above the sewage pipe 102, and the well cover 105 is in a grid shape. The well cover 105 is hingedly connected to the well body 101. In normal use, sewage enters the well body 101 through the sewage inlet pipe 104 and is discharged to the sewage treatment plant through the sewage pipe 102. In heavy rain, rainwater enters the well body 101 through the well cover 105, causing the water level in the well body 101 to rise until it reaches the position of the overflow pipe 103 and is discharged through the overflow pipe 103;

[0026] In this embodiment: the anti-return device includes two guide plates 201 symmetrically arranged on both sides, a fixing ring 202 is arranged between the guide plates 201, a pad 203 is arranged under the fixing ring 202, two slide rails 204 are symmetrically arranged on the front and rear sides of the pad 203, a pressure plate 205 is slidably installed between the two slide rails 204, a floating block 206 is arranged under the pressure plate 205, the pad 203 is made of silica gel material, and the floating block 206 is made of foam material. After being filtered by the filtering device, the rainwater falls on the guide plate 201 and flows to the bottom of the well body 101 through the fixing ring 202. When the water level in the well body 101 is too high, the floating block 206 will follow the water level to drive the pressure plate 205 to rise along the slide rail 204, press the pad 203, thereby closing the fixing ring 202 to prevent sewage from flowing upward;

[0027] In this embodiment, the filtering device includes a lower support edge 301, a lower fixed frame 302 is arranged on the lower support edge 301, a lower filter basket 303 is installed in the lower fixed frame 302, an upper support edge 304 is arranged above the lower filter basket 303, the lower fixed frame 302 and the upper support edge 304 are arranged in a mutually staggered manner, an upper fixed frame 305 is arranged on the upper support edge 304, an upper filter basket 306 is installed in the upper fixed frame 305, two connecting rods 307 are symmetrically arranged on both sides between the upper fixed frame 305 and the lower fixed frame 302, a handle 308 is arranged on the connecting rod 307, and the upper filter Basket 306 is bolted to the upper fixed frame 305. The upper filter basket 306 is made of 304 stainless steel. The upper support edge 304 supports the upper filter basket 306 through the upper fixed frame 305. The lower support edge 301 supports the lower filter basket 303 through the lower fixed frame 302 for filtering. After long-term use, open the manhole cover 105, hold the handle 308 to pull the upper fixed frame 305 upward, so that it drives the lower fixed frame 302 to pass through the upper support edge 304 through the connecting rod 307, thereby synchronously pulling the upper filter basket 306 and the lower filter basket 303 out of the well body 101 for easy cleaning.

[0028] Working principle: In normal use, sewage enters the well body 101 through the sewage inlet pipe 104 and is discharged to the sewage treatment plant through the sewage discharge pipe 102; in heavy rain, rainwater enters the well body 101 through the well cover 105, is filtered by the upper filter basket 306 and the lower filter basket 303, falls on the guide plate 201, and flows to the bottom of the well body 101 through the fixing ring 202, so that the water level in the well body 101 rises until it reaches the overflow pipe 103 and is discharged through the overflow pipe 103; when the well body 101 When the water level inside is too high, the float 206 will follow the water level and drive the pressure plate 205 to rise along the slide rail 204, pressing the pad 203, thereby closing the fixing ring 202 to prevent sewage from flowing upward; after long-term use, open the manhole cover 105, hold the handle 308 and pull the upper fixing frame 305 upward, so that it drives the lower fixing frame 302 to pass through the upper support edge 304 through the connecting rod 307, thereby synchronously pulling the upper filter basket 306 and the lower filter basket 303 out of the well body 101 for easy cleaning.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge city sewage interception and backflow prevention overflow well, comprising a main device for collecting water and overflow drainage, wherein a backflow prevention device for floating, pressing and sealing to prevent backflow is arranged in the main device, characterized in that: It also includes a filtering device disposed above the anti-return device for double-layer filtering and staggered synchronous lifting of two layers of filter screens; The filtering device comprises a lower supporting edge (301), a lower fixing frame (302) is arranged on the lower supporting edge (301), a lower filtering basket (303) is installed in the lower fixing frame (302), an upper supporting edge (304) is arranged above the lower filtering basket (303), the lower fixing frame (302) and the upper supporting edge (304) are arranged in a staggered manner, an upper fixing frame (305) is arranged on the upper supporting edge (304), an upper filtering basket (306) is installed in the upper fixing frame (305), two connecting rods (307) are symmetrically arranged on both sides between the upper fixing frame (305) and the lower fixing frame (302), and a handle (308) is arranged on the connecting rod (307).

2. A sponge city sewage interception and backflow prevention overflow well according to claim 1, characterized in that: The main device comprises a well body (101), a well cover (105) is arranged on the top of the well body (101), a sewage pipe (102) is arranged on the front side of the bottom of the well body (101), and an overflow pipe (103) and a sewage inlet pipe (104) are symmetrically arranged on both sides above the sewage pipe (102).

3. The sponge city sewage interception and backflow prevention overflow well according to claim 1 is characterized in that: The anti-return device comprises two guide plates (201) symmetrically arranged on both sides, a fixing ring (202) is arranged between the guide plates (201), a pad (203) is arranged below the fixing ring (202), two slide rails (204) are symmetrically arranged on the front and rear sides of the pad (203), a pressure plate (205) is slidably installed between the two slide rails (204), and a floating block (206) is arranged below the pressure plate (205).

4. The sponge city sewage interception and backflow prevention overflow well according to claim 1 is characterized by: The upper filter basket (306) is bolted to the upper fixing frame (305), and the upper filter basket (306) is made of 304 stainless steel.

5. The sponge city sewage interception and backflow prevention overflow well according to claim 2 is characterized in that: The manhole cover (105) is in the shape of a grid, and the manhole cover (105) is hingedly connected to the manhole body (101).

6. The sponge city sewage interception and backflow prevention overflow well according to claim 3 is characterized by: The pad (203) is made of silica gel, and the floating block (206) is made of foam material.

Images