A combined sewer network overflow rainwater interception device

Abstract

The present invention discloses a combined sewer network overflow rainwater interception device, including a combined sewer network, a flood control gate, a coarse grid, a float-controlled flow regulating valve and a hydraulic flat plate fine grid; the combined sewer network is provided with a water inlet and a water outlet; the flood control gate controls the water level or pressure difference when overflow occurs in the combined sewer network; the coarse grid blocks large-volume pollutants in sewage; the float-controlled flow regulating valve is arranged between the coarse grid and the hydraulic flat plate fine grid; the hydraulic flat plate fine grid is used to collect and treat pollutants in a centralized manner. The present invention has a simple and reasonable structure, and a coarse grid, a float-controlled flow regulating valve and a hydraulic flat plate fine grid are sequentially arranged in the combined sewer network according to the direction of water flow to intercept sewage in a step-by-step manner, and is used to intercept large-volume pollutants and suspended solids in sewage, and a brush is arranged on the hydraulic flat plate fine grid so that particles in each grid interception area can be cleared and released, reducing the problem of grid blockage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage interception in a combined sewer network, and in particular to a sewage interception device for overflow rainwater in a combined sewer network. Background Art

[0002] Rainwater at the beginning of rainfall is referred to as primary rain. In the beginning of rainfall, rainwater dissolves a large amount of polluting gases such as acidic gases, automobile exhaust, and factory exhaust in the air. After falling to the ground, it washes asphalt felt roofs, asphalt concrete roads, construction sites, etc., so that the primary rain contains a large amount of organic matter, pathogens, heavy metals, grease, suspended solids and other pollutants. Therefore, the pollution level of primary rain is relatively high, usually exceeding the pollution level of ordinary urban sewage. If the early rainwater is directly discharged into natural water bodies, it will cause very serious pollution to the water bodies, so the primary rain needs to be treated. At present, the interception pipe network system is usually used to intercept the primary rain to the sewage pipe and send it to the sewage treatment plant for purification. The pollution level of rainwater in the later stage of rainfall is relatively light. After pre-treatment, the suspended matter and solid particle impurities in the water are intercepted and directly discharged into the natural water body. However, the current primary rain interception facilities have the following disadvantages: 1) The interception equipment has a complex structure and is difficult to operate; 2) In particular, the equipment for intercepting pollution from rainwater before discharge is prone to blockage.

[0003] Therefore, in order to overcome the shortcomings and defects in the background technology, the present invention provides a combined sewer network overflow rainwater interception device, which performs gradual sewage interception through a coarse grid and a hydraulic flat plate fine grid, and is used to intercept large-volume pollutants and suspended matter in sewage. In addition, a brush is provided on the hydraulic flat plate fine grid so that the particles in each grid interception area can be cleared and released, thereby reducing the problem of grid clogging. Summary of the invention

[0004] The purpose of the present invention is to provide a combined sewer network overflow rainwater sewage interception device.

[0005] The present invention is achieved through the following technical solutions:

[0006] A combined sewer network overflow rainwater interception device, comprising a combined sewer network, a flood control gate, a coarse grid, a float-controlled flow regulating valve and a hydraulic flat plate fine grid;

[0007] The combined sewer network is provided with a water inlet and a water outlet, and a flood control gate is provided on one side of the water inlet. A coarse grid, a floating control flow regulating valve and a hydraulic flat plate fine grid are sequentially provided in the combined sewer network according to the direction of the water flow;

[0008] Flood control gates, which control the water level or pressure differential in the combined sewer network when overflow occurs;

[0009] The coarse screen is installed opposite to the water inlet of the combined sewer network to block large pollutants in the sewage;

[0010] The float-controlled flow regulating valve is set between the coarse grid and the hydraulic flat plate fine grid to ensure that the sewage with large-volume pollutants is blocked is sent to the hydraulic flat plate fine grid at a constant flow rate or opening and closing degree;

[0011] The hydraulic flat plate fine screen is installed opposite to the outlet of the combined sewer network, and pollutants are collected and treated through the hydraulic flat plate fine screen.

[0012] Furthermore, the float-controlled flow regulating valve includes a valve seat, a valve and a buoy. A drain outlet is arranged on the valve seat. A rotating shaft is arranged on one side of the drain outlet of the valve seat. The valve and the buoy are installed on the rotating shaft. The buoy drives the rotating shaft to rotate through changes in water level so that the valve rotates to open or close the drain outlet of the valve seat.

[0013] Furthermore, a group of notches are arranged on both sides of the valve, one notch coincides with the drain port on the valve seat to fully open the drain port, and the other notch leaves a gap through the notch when the valve is closed to facilitate lifting of the valve.

[0014] Furthermore, the hydraulic flat plate fine grid comprises a flat plate fine grid, a brush assembly mounted on the flat plate fine grid and moving directionally on the flat plate fine grid, and a hydraulic cylinder mounted on the flat plate fine grid and used for driving the brush assembly to move directionally.

[0015] Furthermore, a plurality of grid retention areas are arranged on the flat fine grid, and the brush assembly covers the plurality of grid retention areas, and the blockages in the corresponding grid retention areas are brushed back and forth by directional movement.

[0016] Furthermore, the brush assembly includes a plurality of brush boxes and support rods, and the plurality of brush boxes are connected in pairs through the support rods to form an integral structure, and the hydraulic cylinder drives the entire structure to move to achieve directional movement of the brush assembly.

[0017] Furthermore, the tops of the multiple brush boxes are commonly connected to a connecting rod, which is connected to a hydraulic rod of a hydraulic cylinder. The connecting rod is driven by the linear reciprocating motion of the hydraulic rod to drive the overall structure formed by the brush box and the support rod to move in a directional manner.

[0018] The beneficial effects of the present invention are as follows: the present invention has a simple and reasonable structure, and in the combined sewer network, coarse grids, float-controlled flow regulating valves and hydraulic flat-plate fine grids are sequentially arranged according to the direction of water flow to intercept sewage in a step-by-step manner, and are used to intercept large-volume pollutants and suspended matter in sewage, and brushes are arranged on the hydraulic flat-plate fine grids so that particles in each grid interception area can be cleared and released, thereby reducing the problem of grid clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the float-controlled flow regulating valve of the present invention.

[0021] Figure 3 Another structural schematic diagram of the float-controlled flow regulating valve of the present invention.

[0022] Figure 4 It is a structural schematic diagram of the hydraulic flat plate fine grid of the present invention.

[0023] Figure 5 Another structural schematic diagram of the hydraulic flat plate fine grid of the present invention.

[0024] in:

[0025] 1. Combined sewer network;

[0026] 11. Water inlet;

[0027] 12. Water outlet;

[0028] 2. Flood control gates;

[0029] 3. Coarse grid;

[0030] 4. Float control flow regulating valve;

[0031] 41. Valve seat;

[0032] 411. Drainage outlet;

[0033] 42. Valve;

[0034] 421. Gap;

[0035] 43. Float;

[0036] 44. Rotating shaft;

[0037] 45. Limiting structure;

[0038] 451, shaft mounting hole;

[0039] 4511, limit block;

[0040] 4512. Incline I;

[0041] 4513. Incline II;

[0042] 4514, card slot;

[0043] 452, rotating sleeve;

[0044] 4521, limiting protrusion;

[0045] 5. Hydraulic flat plate fine grid; 51. Flat plate fine grid;

[0046] 511, grid interception area;

[0047] 52. Brush assembly;

[0048] 521, brush box;

[0049] 522, support rod;

[0050] 523, connecting rod;

[0051] 53. Hydraulic cylinder. DETAILED DESCRIPTION

[0052] 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 the embodiments.

[0053] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0054] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] like Figures 1 to 5 A combined sewer network overflow rainwater interception device is shown, comprising a combined sewer network 1, a flood control gate 2, a coarse grid 3, a float-controlled flow regulating valve 4 and a hydraulic flat plate fine grid 5;

[0057] The combined sewer network 1 is provided with a water inlet 11 and a water outlet 12. A flood control gate 2 is provided on one side of the water inlet 11 of the combined sewer network 1. A coarse grid 3, a floating control flow regulating valve 4 and a hydraulic flat plate fine grid 5 are sequentially provided in the combined sewer network 1 according to the direction of the water flow.

[0058] Flood control gate 2, controlling the water level or pressure difference when overflow occurs in the combined sewer network 1;

[0059] The coarse screen 3 is arranged opposite to the water inlet 11 of the combined sewer network 1 to block large-volume pollutants in the sewage;

[0060] The float-controlled flow regulating valve 4 is arranged between the coarse grid 3 and the hydraulic flat plate fine grid 5 to ensure that the sewage with large volume of pollutants is blocked is sent to the hydraulic flat plate fine grid 5 at a constant flow rate or opening and closing degree;

[0061] The hydraulic flat plate fine grid 5 is arranged opposite to the water outlet 12 of the combined sewer network 1 , and the pollutants are collected and processed in a centralized manner through the hydraulic flat plate fine grid 5 .

[0062] In this embodiment, the float-controlled flow regulating valve 4 includes a valve seat 41, a valve 42 and a buoy 43. The valve seat 41 is provided with a drain port 411. The valve seat 41 is provided with a rotating shaft 44 on one side of the drain port 411. The valve 42 and the buoy 43 are mounted on the rotating shaft 44. The buoy 43 drives the rotating shaft 44 to rotate through the change of water level so that the valve 42 rotates to open or close the drain port 411 of the valve seat 41.

[0063] More specifically, a group of notches 421 are provided on both sides of the valve 42, one notch 421 overlaps with the drain port 411 on the valve seat 41 to fully open the drain port 411, and the other notch 421 leaves a gap through the notch 421 when the valve 42 is closed to facilitate the lifting of the valve 42. If the notch 421 is not provided on the valve 42, then it is necessary to rotate the valve 42 at a larger angle to completely rotate it away from the drain port 411 to achieve full opening of the drain port 411. However, the present invention provides notches 421 on the valve 42, and the drain port 411 can be fully opened as long as the drain port 411 overlaps with the notch 421 on the valve 42 at a certain angle. When the float 43 reaches the highest position, the valve 42 fully opens the drain port 411 of the valve seat 41 through the notch 421 on one side; when the valve 42 is closed, the notch 421 on the other side leaves a gap to facilitate the next lifting;

[0064] A limiting structure 45 is provided between the rotating shaft 44 and the valve seat 41. The limiting structure 45 includes a rotating shaft mounting hole 451 provided on the valve seat 41 and a rotating shaft sleeve 452 provided at one end of the rotating shaft 44. The rotating shaft sleeve 452 is provided at one end of the rotating shaft 44. The rotating shaft 44 is rotatably provided in the rotating shaft mounting hole 451 through the rotating shaft sleeve 452.

[0065] A pair of limit blocks 4511 are disposed on the inner side wall of the rotating shaft installation hole 451. A single limit block 4511 includes an inclined surface I 4512 and an inclined surface II 4513. A clamping groove 4514 is disposed between the inclined surface I 4512 and the inclined surface II 4513.

[0066] A pair of limiting protrusions 4521 matching the slots 4514 are provided on the rotating shaft sleeve 452. The rotating shaft sleeve 452 rotates so that the limiting protrusions 4521 slide on the inclined surface I 4512 and the inclined surface II 4513 and finally get locked in the slots 4514.

[0067] In actual use, the water level rises, the float 43 moves upward, drives the rotating shaft 44 to rotate, so that the limiting protrusion 4521 on the rotating shaft sleeve 452 is separated from the clamping groove 4514 and leaves the limiting block 4511, and the valve 42 is lifted and gradually opens the drain port 411 as the water level rises until the drain port 411 is fully opened;

[0068] As the water level drops, the float 43 moves downward, driving the rotating shaft 44 to rotate in the opposite direction, so that the valve 42 gradually closes the drain outlet 411, and the limiting protrusion 4521 slides onto the inclined surface I 4512 and slides on the inclined surface I 4512 and finally gets stuck in the slot 4514. The valve 42 is in a closed state with a gap left. Even if the limiting protrusion 4521 slides onto the inclined surface II 4513 due to excessive rotation, it will automatically slide into the slot 4514 to be closed with a gap left.

[0069] In this embodiment, the hydraulic flat plate fine grid 5 comprises a flat plate fine grid 51, a brush assembly 52 mounted on the flat plate fine grid 51 and directional moving on the flat plate fine grid, and a hydraulic cylinder 53 mounted on the flat plate fine grid 51 and used to drive the brush assembly 52 to directional move;

[0070] A plurality of grid retention areas 511 are provided on the flat grid 51, and the brush assembly 52 covers the plurality of grid retention areas 511, and washes the blockages in the corresponding grid retention areas 511 back and forth by directional movement;

[0071] More specifically, the brush assembly 52 includes a plurality of brush boxes 521 and a support rod 522. The plurality of brush boxes 521 are connected to each other through the support rod 522 to form an integral structure. The hydraulic cylinder 53 drives the entire structure to move to achieve directional movement of the brush assembly 52. ​​The tops of the plurality of brush boxes 521 are commonly connected to a connecting rod 523. The connecting rod 523 is connected to the hydraulic rod of the hydraulic cylinder 53. The connecting rod 523 is driven by the linear reciprocating motion of the hydraulic rod to drive the overall structure formed by the brush box 521 and the support rod 522 to move in a directional manner.

[0072] The directional movement of the entire structure of the brush assembly 52 is achieved through a connecting rod 523. The tops of multiple brush boxes 521 are connected to a connecting rod 523, and the connecting rod 523 is connected to the hydraulic rod of the hydraulic cylinder 53. The connecting rod 523 is driven by the linear reciprocating motion of the hydraulic rod to drive the overall structure formed by the brush box 521 and the support rod 522 to move in a directional manner.

[0073] Both ends of a single brush box 521 are equipped with slides that slide on the guide rail shaft. A brush is installed in the brush box 521 and the brush protrudes from the bottom of the brush box 521 to clean the grille racks in the grille retention area 511, clearing and releasing the internal blockages in the gaps of the grille racks, and effectively preventing the problem of grille rack blockage.

[0074] The hydraulic flat-plate fine grid 5 is arranged opposite to the water outlet 12 of the combined sewer network 1. The water sent by the float-controlled flow regulating valve 4 passes through the grid rack from the bottom of the flat-plate fine grid 51 and flows out from the top. A preferred embodiment is that the present invention sets four grid retention areas 511 to divide the water flow into four streams. The width of a single grid retention area 511 is 65 cm. In conjunction with the grid retention area 511, the present invention sets four brush boxes 521. The four brush boxes 521 are connected by three support rods 522. The linear reciprocating action of the hydraulic rod drives the connecting rod 523 to drive the brush assembly 52 to reciprocate as a whole, so that the brush box 521 reciprocates in the corresponding grid retention area 511. The brush in the brush box 521 extends into the gap between the grid racks to remove and release the particles blocked in the gap between the grid racks, thereby preventing the flat-plate fine grid 51 from being blocked.

[0075] The beneficial effects of the present invention are as follows: the present invention has a simple and reasonable structure, and in the combined sewer network, coarse grids, float-controlled flow regulating valves and hydraulic flat-plate fine grids are sequentially arranged according to the direction of water flow to intercept sewage in a step-by-step manner, and are used to intercept large-volume pollutants and suspended matter in sewage, and brushes are arranged on the hydraulic flat-plate fine grids so that particles in each grid interception area can be cleared and released, thereby reducing the problem of grid clogging.

[0076] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined sewer network overflow rainwater interception device, characterized in that: It includes combined sewer network, flood control gates, coarse screens, float-controlled flow regulating valves and hydraulic flat plate fine screens; The combined sewer network is provided with a water inlet and a water outlet, and a flood control gate is provided on one side of the water inlet. A coarse grid, a floating control flow regulating valve and a hydraulic flat plate fine grid are sequentially provided in the combined sewer network according to the direction of the water flow; Flood control gates, which control the water level or pressure differential in the combined sewer network when overflow occurs; The coarse screen is installed opposite to the water inlet of the combined sewer network to block large pollutants in the sewage; The float-controlled flow regulating valve is set between the coarse grid and the hydraulic flat plate fine grid to ensure that the sewage with large-volume pollutants is blocked is sent to the hydraulic flat plate fine grid at a constant flow rate or opening and closing degree; The hydraulic flat plate fine grid is set directly opposite to the outlet of the combined sewer network, and the pollutants are collected and treated through the hydraulic flat plate fine grid; The float-controlled flow regulating valve comprises a valve seat, a drain port is arranged on the valve seat, a rotating shaft is arranged on one side of the drain port, a valve and a float are mounted on the rotating shaft, and the float drives the rotating shaft to rotate through the change of water level so that the valve rotates to open or close the drain port of the valve seat; As the water level rises, the buoy moves upward, driving the shaft to rotate, causing the limit protrusion on the shaft sleeve to disengage from the slot and leave the limit block. The valve is lifted and gradually opens the drain port as the water level rises until the drain port is fully opened. When the water level drops, the buoy moves downward, driving the shaft to rotate in the opposite direction, so that the valve gradually closes the drain port. The limiting protrusion slides onto the inclined surface I and then slides on the inclined surface I and finally gets stuck in the slot. The valve is in a closed state with a gap. Even if the limiting protrusion slides onto the inclined surface II due to excessive rotation, it will automatically slide into the slot to close the valve with a gap. A set of notches are provided on both sides of the valve, one notch coincides with the drain port on the valve seat to fully open the drain port, and the other notch leaves a gap through the notch when the valve is closed to facilitate lifting of the valve; The hydraulic flat plate fine grid comprises a flat plate fine grid, a brush assembly installed on the flat plate fine grid and directional movement on the flat plate fine grid, and a hydraulic cylinder installed on the flat plate fine grid and used for driving the brush assembly to directional movement.

2. A combined sewer network overflow rainwater interception device according to claim 1, characterized in that: The flat fine grid is provided with a plurality of grid retention areas, and the brush assembly covers the plurality of grid retention areas, and washes the blockages in the corresponding grid retention areas back and forth through directional movement.

3. A combined sewer network overflow rainwater interception device according to claim 2, characterized in that: The brush assembly comprises a plurality of brush boxes and a support rod. The plurality of brush boxes are connected in pairs through the support rod to form an integral structure. The hydraulic cylinder drives the entire structure to move to achieve directional movement of the brush assembly.

4. A combined sewer network overflow rainwater interception device according to claim 3, characterized in that: The tops of the multiple brush boxes are connected to a connecting rod, which is connected to the hydraulic rod of the hydraulic cylinder. The connecting rod is driven by the linear reciprocating motion of the hydraulic rod to drive the overall structure formed by the brush box and the support rod to move in a directional manner.

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