Full-underground grille room at water inlet end of rainwater storage pond

Abstract

The invention discloses a full-underground grid room at a water inlet end of a rainwater storage tank, which is buried underground and comprises a lower-layer grid room and an upper-layer grid room, the water inlet end of the lower-layer grid room is provided with a settling chamber and is communicated with a rainwater inlet pipe; the water drainage end of the lower-layer grid room is provided with a refined filtration chamber and is communicated with a rainwater outlet pipe; gravel is longitudinally washed in the settling chamber, and a water retaining weir wall is arranged at the communication part of the settling chamber and the fine filtration chamber; an equipment chamber and an operation chamber are longitudinally distributed in the upper-layer grille room, a lifting type rainwater grille which downwards stretches into the fine filtration chamber to lift light pollutants is arranged in the equipment chamber, and a spiral feeder which longitudinally conveys the pollutants from the equipment chamber to the operation chamber is arranged in the equipment chamber; an elevator is arranged in the operating room; and a slag outlet flush with the ground is formed in the top of the full-underground grid room right above the elevator. The full-underground grille room is compact in underground structure, small in occupied space, simple in structure and easy to implement, and pollutants are subjected to coarse and fine separation treatment and automatic cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of rainwater filtration, and specifically to an all-underground grille chamber at the water inlet end of a rainwater storage tank. Background Art

[0002] A rainwater storage tank is a rainwater collection facility that occupies a large area and is generally built under public areas such as urban squares, green spaces, and parking lots. Its main function is to temporarily store the peak flow of rainwater runoff and then slowly discharge the rainwater from the storage tank after the maximum flow has decreased. It can not only avoid rainwater flood peaks, realize rainwater recycling, but also prevent the initial rainwater from polluting the receiving water body, and also play a positive role in the drainage scheduling between drainage areas. However, particulate impurities in rainwater are prone to deposit in the storage tank, and it is difficult to clean manually. Most existing rainwater storage tanks solve the problem of dirt accumulation and blockage by designing filtering equipment at the water inlet end.

[0003] However, the grilles or grille chambers at the water inlet end of existing rainwater storage tanks have the following problems:

[0004] Large space occupation: The ground grille chamber needs to additionally occupy above-ground space, affecting the urban landscape and land use.

[0005] Low pollutant separation efficiency: Traditional grilles only intercept large particulate debris and cannot synchronously treat light pollutants and sand and gravel, which easily leads to blockage of subsequent pipelines.

[0006] Difficult cleaning and maintenance: Pollutants need to be cleaned manually or by ground equipment, which is inconvenient to operate and poses safety hazards.

[0007] Insufficient hydraulic control: The existing water inlet end of the storage tank lacks the collaborative design of sedimentation and fine filtration, which easily causes secondary pollution.

[0008] Therefore, how to design an all-underground grille chamber at the water inlet end of a rainwater storage tank to solve the above technical problems has become an urgent technical problem for those skilled in the art. Summary of the Invention

[0009] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to provide an all-underground grille chamber at the water inlet end of a rainwater storage tank, which has a compact underground structure, small space occupation, coarse and fine separation treatment of pollutants and automatic cleaning, and is simple in structure and easy to implement.

[0010] To solve the above problems, the present invention provides an all-underground grille chamber at the water inlet end of a rainwater storage tank. The all-underground grille chamber is buried below the ground and includes a lower grille chamber and an upper grille chamber arranged from bottom to top;

[0011] The lower - layer grid chamber is arranged horizontally. A sedimentation chamber is provided at the water - inlet end of the lower - layer grid chamber and is connected to the rain - water inlet pipe. A fine - filtration chamber is provided at the water - drainage end of the lower - layer grid chamber and is connected to the rain - water outlet pipe. Sand and gravel are longitudinally flushed in the sedimentation chamber, and a water - retaining weir wall is provided at the connection between the sedimentation chamber and the fine - filtration chamber.

[0012] In the upper - layer grid chamber, an equipment room and an operation room are longitudinally arranged. In the equipment room, a lifting - type rain - water grid is provided which extends downward into the fine - filtration chamber to lift light pollutants, and a screw feeder is provided in the equipment room to longitudinally convey pollutants from the equipment room to the operation room. In the operation room, a hoist is provided. The hoist receives the light pollutants conveyed by the screw feeder, and a slag - discharging opening flush with the ground is opened on the top of the fully underground grid chamber directly above the hoist.

[0013] Preferably, flushing water - inlet openings and sewage - discharging openings are respectively provided at the longitudinal two ends of the bottom of the sedimentation chamber. The bottom plate of the sedimentation chamber is a longitudinally inclined slope plate, and the transverse two ends of the sedimentation chamber are respectively connected to the fine - filtration chamber and the rain - water inlet pipe. The height of the slope plate at the end with the flushing water - inlet opening is higher than that of the slope plate at the end with the sewage - discharging opening.

[0014] Preferably, the top of the water - retaining weir wall is cast and supported on the top and two side walls of the lower - layer grid chamber. A water - passing opening connecting the sedimentation chamber and the fine - filtration chamber is provided in the middle of the water - retaining weir wall, and a water - retaining weir fixed to the bottom plate of the lower - layer grid chamber by casting is fixedly provided at the bottom of the water - retaining weir wall.

[0015] Preferably, a manhole is opened on the top plate of the upper - layer grid chamber, and a ladder connecting the manhole is fixedly provided on the side wall of the upper - layer grid chamber.

[0016] The advantages of the present invention compared with the prior art are as follows:

[0017] 1. Fully underground layered design:

[0018] Lower - layer grid chamber: Horizontally arranged, including a sedimentation chamber (connected to the rain - water inlet pipe) and a fine - filtration chamber (connected to the rain - water outlet pipe). The bottom of the sedimentation chamber is a longitudinally inclined slope plate (slope 0.5% - 1%), and sand and gravel flushing and discharging are realized through the flushing water - inlet opening and the sewage - discharging opening.

[0019] Upper - layer grid chamber: Longitudinally arranged with an equipment room and an operation room. In the equipment room, a lifting - type rain - water grid (vertically extending into the fine - filtration chamber) and a screw feeder are provided. The operation room is equipped with a hoist and a ground slag - discharging opening [1][3].

[0020] 2. Key components:

[0021] Water - retaining weir wall: Arranged between the sedimentation chamber and the fine - filtration chamber, with a water - passing opening in the middle and fixed by casting at the bottom, ensuring stable hydraulic transition and preventing sand and gravel from flushing into the fine - filtration chamber.

[0022] Automated cleaning system: The lifting grille lifts light pollutants to the screw feeder, longitudinally conveys them to the elevator, and finally automatically discharges them through the ground slag outlet.

[0023] The innovation of the present invention also lies in:

[0024] Three-dimensional zoning treatment: Through the partition design of the sedimentation chamber (sand and gravel sedimentation) and the fine filtration chamber (interception of light pollutants), the classification treatment of pollutants is realized.

[0025] Fully underground automation: The equipment room and the operation room are integrated underground, and through the linkage of the screw feeder and the elevator, no manual intervention is required.

[0026] Hydraulic optimization: The slope plate and the water retaining weir wall cooperate to control the water flow velocity, extend the sedimentation time, improve the sand and gravel separation efficiency, and facilitate the flushing and cleaning of the sedimentation chamber. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] Figure 1 It is a side sectional view of the present invention;

[0029] Figure 2 is Figure 1 a sectional view of the A-A section in

[0030] Figure 3 is Figure 1 a sectional view of the B-B section in

[0031] Figure 4 It is a top view of the present invention;

[0032] In the figure: 1 - manhole; 2 - ladder; 3 - operation room; 4 - slag outlet; 5 - screw feeder; 6 - elevator; 7 - lifting rainwater grille; 8 - equipment room; 9 - fine filtration chamber; 10 - sedimentation chamber; 11 - rainwater inlet pipe; 12 - flushing water inlet; 13 - slope plate; 14 - water retaining weir wall; 15 - water passing port; 16 - water retaining weir; 17 - rainwater outlet pipe; 18 - sewage outlet. Detailed Embodiments

[0033] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0034] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0035] The present invention will be further described in detail below with reference to the accompanying drawings.

[0036] Combined with Figures 1 to 4 , a drilling trolley for the maintenance construction of existing railway track slabs of the present invention includes:

[0037] A fully underground grille chamber at the water inlet end of a rainwater storage and regulation pond. The fully underground grille chamber is buried below the ground surface and includes a lower grille chamber and an upper grille chamber arranged from bottom to top;

[0038] The lower grille chamber is arranged horizontally. A sedimentation chamber 10 is provided at the water inlet end of the lower grille chamber and is connected to a rainwater inlet pipe 11. A fine filtration chamber 9 is provided at the drainage end of the lower grille chamber and is connected to a rainwater outlet pipe 17; Sand and gravel are longitudinally washed in the sedimentation chamber, and a water retaining weir wall 14 is provided at the connection between the sedimentation chamber and the fine filtration chamber;

[0039] An equipment room 8 and an operation room 3 are longitudinally arranged in the upper grille chamber. Among them, a lifting type rainwater grille 7 that extends downward into the fine filtration chamber to lift light pollutants is provided in the equipment room, and a screw conveyor 5 that longitudinally conveys pollutants from the equipment room to the operation room is provided in the equipment room; A hoist 6 is provided in the operation room. The hoist receives the light pollutants conveyed by the screw conveyor, and a slag outlet 4 flush with the ground surface is opened on the top of the fully underground grille chamber directly above the hoist.

[0040] Preferably, a flushing water inlet 12 and a sewage outlet 18 are respectively opened at the longitudinal two ends of the bottom of the sedimentation chamber. The bottom plate of the sedimentation chamber is set as a longitudinally inclined slope plate 13, and the transverse two ends of the sedimentation chamber are respectively connected to the fine filtration chamber and the rainwater inlet pipe; The height of the slope plate at the end of the flushing water inlet is higher than the height of the slope plate at the end of the sewage outlet.

[0041] Preferably, the top of the water retaining weir wall is poured and supported on the top and side walls between the lower grids. A water passage opening 15 connecting the sedimentation chamber and the fine filtration chamber is provided in the middle of the water retaining weir wall, and a water retaining weir 16 fixedly arranged on the bottom plate of the lower grid chamber is fixedly arranged at the bottom of the water retaining weir wall.

[0042] Preferably, a manhole 1 is provided on the top plate of the upper grid chamber, and a ladder 2 communicating with the manhole is fixedly arranged on the side wall of the upper grid chamber.

[0043] In addition, preferably, the screw feeder, the lifting type rainwater grille and the elevator all adopt mature products in the prior art. Among them, the lifting type rainwater grille can adopt a lifting type rainwater grille for urban flood drainage channels disclosed in CN222140266U.

[0044] The working principle of the present invention is as follows:

[0045] A fully underground grid chamber at the water inlet end of a rainwater storage tank of the present invention, and its operation method includes the following steps:

[0046] S1. Rainwater is introduced into the sedimentation chamber through the rainwater inlet pipe for sedimentation. Large particle pollutants are deposited on the slope plate and accumulate at a low position on the slope plate; when the water level in the sedimentation chamber reaches the height of the water passage opening, it flows into the fine filtration chamber; the lifting type rainwater grille in the fine filtration chamber starts to lift light pollutants such as water plants and plastic bags to the feed inlet of the screw feeder in the equipment room, and the screw feeder sends the pollutants into the slag box carried on the elevator.

[0047] S2. When the slag box in S1 is filled with grid slag, the PLC control system starts the elevator, and it runs upward in the vertical direction to lift the slag box filled with grid slag to the ground through the slag outlet on the ground.

[0048] S3. When the slag box filled with grid slag in S2 is lifted to the ground through the ground maintenance hole, the on-site maintenance personnel pour the grid slag in the slag box into a special grid slag transport vehicle for centralized cleaning, and put the empty slag box back to the elevator.

[0049] S4. When the empty slag box in S3 is put back to the elevator, the PLC control system starts the elevator to drive the slag box to descend and reset to the discharge outlet of the screw feeder.

[0050] The present invention and its implementation manners have been described above. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. An all-underground grille chamber at the inlet end of a rainwater storage tank, characterized in that: The fully underground grille chamber is buried below the ground surface and includes a lower grille chamber and an upper grille chamber arranged from bottom to top; The lower grille chamber is arranged horizontally. A sedimentation chamber is provided at the water inlet end of the lower grille chamber and is connected to the rainwater inlet pipe. A fine filtration chamber is provided at the drainage end of the lower grille chamber and is connected to the rainwater outlet pipe. Sand and gravel are longitudinally flushed in the sedimentation chamber, and a water retaining weir wall is provided at the connection between the sedimentation chamber and the fine filtration chamber; An equipment room and an operation room are longitudinally arranged in the upper grille chamber. Among them, a lifting type rainwater grille that extends downward into the fine filtration chamber to lift light pollutants is provided in the equipment room, and a screw feeder for longitudinally transporting pollutants from the equipment room to the operation room is provided in the equipment room. A hoist is provided in the operation room. The hoist receives the light pollutants transported by the screw feeder, and a slag outlet flush with the ground surface is opened on the top of the fully underground grille chamber directly above the hoist.

2. The fully underground grille chamber at the water inlet end of the rainwater storage tank according to claim 1, wherein: Flush water inlets and sewage outlets are respectively opened at the longitudinal two ends of the bottom of the sedimentation chamber. The bottom plate of the sedimentation chamber is set as a longitudinally inclined slope plate, and the transverse two ends of the sedimentation chamber are respectively connected to the fine filtration chamber and the rainwater inlet pipe; The height of the slope plate at one end of the flush water inlet is higher than the height of the slope plate at the sewage outlet end.

3. The fully underground grille chamber at the water inlet end of the rainwater storage tank according to claim 2, wherein: The top of the water retaining weir wall is poured and supported on the top and two side walls of the lower grille chamber. A water passing port connecting the sedimentation chamber and the fine filtration chamber is opened in the middle of the water retaining weir wall, and a water retaining weir fixed to the bottom plate of the lower grille chamber by pouring is fixedly provided at the bottom of the water retaining weir wall.

4. The fully underground grille chamber at the water inlet end of the rainwater storage tank according to claim 1, characterized in that: A manhole is opened on the top plate of the upper grille chamber, and a ladder connecting the manhole is fixedly provided on the side wall of the upper grille chamber.

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