CN104975649A - Separate system type initial rainwater regulation and storage pool - Google Patents

Abstract

The invention discloses a separate system type initial rainwater regulation and storage pool. The separate system type initial rainwater regulation and storage pool is characterized by comprising a natural water drainage unit and a buffer regulation and storage unit which are arranged in the water flow direction, the natural water drainage unit comprises a first buffer pool and a first hydraulic automatic tilting gate, a water inlet pipe is arranged on the upstream part of the first hydraulic automatic tilting gate in the first buffer pool, a natural water drainage outlet is formed in the downstream part of the first hydraulic automatic tilting gate in the first buffer pool, the buffer regulation and storage unit comprises a second buffer pool communicated with the first buffer pool, and a regulation and storage pool body, and the second buffer pool is communicated with the regulation and storage pool body through a second normally-open hydraulic automatic gate. According to the separate system type initial rainwater regulation and storage pool, initial rainwater separation is achieved, rainwater drainage is controlled and regulated according to the different rainfall amount, pollution caused when initial rainwater is directly drained and water accumulation in towns are effectively prevented, the structure is simple, the cost is low, full-automatic control can be achieved, manual operation is not needed, and regulation and storage are safe and reliable.

Description

Split system initial rainwater storage tank

technical field

The invention relates to a drainage system, in particular to an initial stage rainwater storage tank of diversion system.

Background technique

After the initial rainwater scours the air and the surface, it will carry a large amount of toxic and harmful substances. If the initial rainwater is discharged directly without treatment, the water body will be seriously polluted. The separate drainage system sends all urban sewage to the sewage treatment plant for treatment, but the initial rainwater is directly discharged into the water body without treatment, which will also cause serious pollution to the urban water body.

In the early stage of rainfall, road dust, mud, sand, oil, and even garbage quickly flow into the drainage pipes (canals) along with the initial rainwater, and the concentration indicators of major pollutants such as BOD, COD, and SS are even close to and reach the water inlet standard of the sewage treatment plant. In view of the above situation, with the increase of the reduction ratio of pollutants in domestic cities and the urgent requirement for the improvement of water quality of rivers and lakes, it is necessary to carry out the rain and sewage diversion system and continuously improve the interception multiple of the interception type sewage interception area. Rainwater is stored and stagnated to reduce pollution emissions. Therefore, establishing an initial rainwater storage tank with diversion system, collecting the initial rainwater into the storage tank, and then discharging it after treatment can effectively prevent water pollution and improve the water environment. The existing initial rainwater storage tank has the following disadvantages: 1) At the water inlet of the storage tank, the water level needs to be controlled. In China, manual or electric gates are mainly used, but this control method has opening and closing time. Shortcomings such as long and unreliable work, there is a lag in the regulation of rainwater, and it is easy to form waterlogging, resulting in urban waterlogging; 2) The control of initial rainwater interception flow is vague and extensive. Pollution, if there is too much initial rain in the interception, it will cause waste and unreasonable use of the limited resources of the rainwater storage tank. In addition, the treatment capacity of the sewage plant is also very high.

Contents of the invention

The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology, to provide a diversion-based initial rainwater storage tank, which can be regulated in time to collect the initial rainwater, avoid urban water accumulation, and discharge it after treatment, prevent water pollution and improve water quality. environment.

The technical solution of the present invention is: an initial stage rainwater storage tank of diversion system, which is characterized in that it includes a natural water body discharge unit and a buffer regulation and storage unit arranged along the direction of water flow and connected to each other, and the natural water body discharge unit includes a first buffer Pool and the first hydraulic automatic gate set in the first buffer pool, the first hydraulic automatic gate in the first buffer pool is provided with a water inlet pipe upstream, and the first hydraulic automatic gate in the first buffer pool is provided with a natural water outlet downstream ;

The buffer storage unit includes a second buffer pool and a storage pool connected to the first buffer pool, the second buffer pool and the storage pool are connected through a second hydraulic automatic gate that is normally open, and the storage tank The pool is located downstream of the second hydraulic automatic gate, the bottom of the second buffer pool is higher than or equal to the maximum storage water level of the storage tank, and a submersible sewage pump is installed in the storage tank.

Preferably, the first hydraulic automatic gate is an inductive hydraulic automatic gate that is normally closed, and the opening water level of the first hydraulic automatic gate is equal to the bottom height of the second buffer pool.

Preferably, the second hydraulic automatic gate is a buoyant box type downstream control weir gate, and the closing water level of the second hydraulic automatic gate is the maximum storage water level of the storage tank.

Preferably, a flushing device and a high-definition camera are installed in the storage tank.

Further, it also includes a control unit, the signal input end of the submersible sewage pump and the signal output end of the high-definition camera are all connected to the control unit, a liquid level sensor is provided in the storage tank, and the signal output end of the liquid level sensor passes through the control unit Connect with the signal input terminal of the flushing device.

Further, the flushing device and the high-definition camera are respectively arranged on the left and right sides of the storage tank. The number and position of the flushing device and high-definition cameras can be adjusted and arranged according to the actual situation.

Preferably, a self-cleaning horizontal grid is provided in front of the second hydraulic automatic gate in the second buffer pool, and the self-cleaning horizontal grid includes horizontal grid bars arranged at intervals in the vertical direction and interspersed between each horizontal grid bar. The rake teeth are driven by hydraulic cylinders arranged behind the horizontal grille. The horizontal grille with self-cleaning function is set to intercept the floating and suspended matter entering the rainwater of the storage tank. During the rainfall process, the equipment operates continuously and automatically, scraping off the sundries stuck on the horizontal grille, allowing the floating and suspended matter to enter the downstream with the water flow for centralized treatment.

Preferably, the first buffer pool communicates with the second buffer pool through a connecting pipe, and the bottom of the connecting pipe is at the same height as the bottom of the second buffer pool.

Further, the bottom of the first buffer tank is at the same height as the bottom of the second buffer tank, and the bottom of the water inlet pipe is at the same height as the bottom of the first buffer tank.

Preferably, the bottom of the storage tank is concave to form a catchment area, and the submersible sewage pump is located in the catchment area.

In the present invention, the second hydraulic automatic gate of the buffer storage unit is installed at the entrance of the storage tank and is in a normally open state. When the water level of the storage tank reaches the maximum storage level, the second hydraulic automatic gate is closed, thereby preventing the water in the storage tank from The initial rainwater flows back into the pipe network. The first hydraulic automatic gate of the natural water body discharge unit is installed upstream of the natural water body discharge port, and the height of the opening water level is the height of the bottom of the second buffer pool, which is used to enter the later stage of the second buffer pool after the water level of the storage pool reaches the maximum storage level All rainwater is discharged to natural water bodies. When the sewage plant has processing capacity, the submersible sewage pump starts to discharge the rainwater in the storage tank through the sewage pipe to the sewage treatment plant for treatment.

The invention collects the initial rainwater into the storage tank, avoiding the harm of the initial rainwater to the natural water body; through the cooperation of the natural water discharge unit and the buffer storage unit, the middle and late rainwater after the storage tank is full is discharged to the natural water body in time, In turn, urban water accumulation was prevented; after the rainfall ended, the submersible sewage pump began to discharge the rainwater in the storage tank through the sewage pipe to the sewage treatment plant for treatment; the flushing device stirred and washed the bottom of the storage tank, and collected and adjusted it through a high-definition camera after washing. On the screen at the bottom of the storage tank, perform fixed-point flushing on the unwashed positions to clean the storage tank. The entire flushing process does not require an external water source, and the flushing effect is better than that of the flap flushing door and hydraulic dumping bucket, and the sediment content in the water is small, so it will not silt the buffer pool and pipes.

The invention realizes the separation of initial rainwater, controls and regulates the discharge of rainwater in an orderly manner according to the difference in rainfall and rainfall, effectively prevents the pollution of direct discharge of initial rainwater and the accumulation of water in cities and towns, and has a simple structure, low cost, and can be fully distributed. Automatic control, no manual operation, safe and reliable regulation and storage.

Description of drawings

Fig. 1 is a structural representation of the present invention

Figure 2 is a sectional view of A-A in Figure 1

Figure 3 is a top view of the self-cleaning horizontal grille

Figure 4 is a side view of the self-cleaning horizontal grille

Figure 5 is a structural schematic diagram of the first hydraulic automatic gate

Figure 6 is a top view of the structure of the first hydraulic automatic gate

Figure 7 is a schematic diagram of the opening structure of the buoyant chamber of the first hydraulic automatic gate

Figure 8 is a schematic diagram of opening the first hydraulic automatic gate

Figure 9 is a schematic diagram of the closing structure of the buoyant chamber of the first hydraulic automatic gate

Figure 10 is a schematic diagram of closing the gate of the first hydraulic automatic gate

Among them: 1. The first buffer pool 2. The second buffer pool 3. Inlet pipe 4. Natural water outlet 5. The first hydraulic automatic gate 6. Storage tank 7. The second hydraulic automatic gate 8. Submersible sewage pump 9. Flushing device 10. HD camera 11. Liquid level sensor 12. Self-cleaning horizontal grid 13. Connecting pipe 14. The first hydraulic automatic gate opening water level height 15. The second hydraulic automatic gate closing water level height 16. Water collection area 501. Rotation Shaft 502. Float 503. Gate 504. Float chamber 505. Float chamber

506. Float 507. Water inlet 508. Water outlet 509. Counterweight 510. First pulley 511. Second pulley 512. Wire rope 121. Horizontal grid 122. Rake teeth 123. Hydraulic cylinder.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-2, the present invention includes a connected natural water body discharge unit and a buffer storage unit, the natural water body discharge unit includes a first buffer pool 1 and a first hydraulic automatic gate 5 arranged in the first buffer pool 1 ; The buffer storage unit includes a second buffer pool 2 and a storage tank 6, and the second buffer pool 2 and the storage pool 6 are connected through a second hydraulic automatic gate 7 that is normally open. The first buffer tank 1 and the second buffer tank 2 are connected through a connecting pipe 13 , and the bottom of the connecting pipe 13 is flush with the second buffer tank 2 . The left side of the first buffer tank 1 (upstream of the first hydraulic automatic gate 5) is provided with a water inlet pipe 3, the bottom of the first buffer tank 1 is flush with the bottom of the second buffer tank 2, and the bottom of the water inlet pipe 3 is in line with the bottom of the first buffer tank 1 flush. The rear of the first buffer pool 1 (downstream of the first hydraulic automatic gate 5 ) is provided with a natural water discharge port 4 .

The left and right sides in Fig. 1 correspond to the left and right sides of this embodiment, and the up and down correspond to the rear and front of this embodiment. The first hydraulic automatic gate 5 is an inductive hydraulic automatic gate that is normally closed and automatically opened when the water level in the induction regulating storage tank 6 reaches the opening water level. As shown in Figure 5-10, the inductive hydraulic automatic gate includes a rotating shaft 501 fixed between the two walls of the first buffer pool 1, and a floating tank 502 and a gate 503 respectively arranged on both sides of the rotating shaft 501. The floating tank 502 is located at In the buoyancy tank chamber 504, a float chamber 505 is provided in the adjustment storage tank 6, and the lower part of the float chamber 505 has a water flow hole communicating with the adjustment storage tank 6; the float chamber 505 is provided with a float 506; adjacent to the first buffer tank 1 There is a water inlet 507 at the bottom of the side wall of the pontoon chamber 504, and there is a water outlet 508 near the bottom of the side wall of the pontoon chamber of the storage tank 6, and the diameter of the water inlet 507 is much larger than the water outlet 508; There is a counterweight 509 to block the water inlet 507. The counterweight 509 and the float 506 are linked through a linkage. The linkage includes a first pulley 510 located above the float chamber 505 in the adjustment storage tank 6 and a first pulley located in the buoy chamber 504. The second pulley 511 above, the steel wire rope 512 is connected between the float 506 and the counterweight 509, and one end of the steel rope 512 is connected to the float 506, and the other end passes through the first pulley 510 and the second pulley 511 to connect the counterweight 509; the float 506 The quality of is greater than the quality of counterweight 509. The height of the water inlet water level of the float chamber 505 is the height of the maximum storage water level of the storage tank 6 . The height of the water level at the water inlet 507 of the buoyancy tank chamber is the height of the bottom of the second buffer pool 2, which is also the height of the bottom of the first buffer pool 1.

The storage tank 6 is located behind the second buffer tank 2 (downstream of the second hydraulic automatic gate 7), and the second hydraulic automatic gate 7 is a buoyant box type downstream control weir gate (the structure has been disclosed by the utility model CN204001177). The common state of the second hydraulic automatic gate 7 is to open, and the closing water level height 15 of the second hydraulic automatic gate is the maximum retention water level height of the storage tank 6 . The bottom of the second buffer tank 2 is higher than the bottom of the storage tank 6 so that the storage tank has enough water storage space. The bottom of the second buffer tank 2 can be selected to be higher than or flush with the maximum water level of the storage tank 6. In this embodiment The bottom of the second buffer tank 2 is higher than the maximum water level of the storage tank 6. The bottom of the storage tank 6 is concave to form a catchment area 16, and the storage tank 6 is provided with a submersible sewage pump 8 located in the water collection area 16, and the discharge end of the submersible sewage pump 8 leads to a sewage treatment plant.

A self-cleaning horizontal grid 12 is provided in front of the second hydraulic automatic gate 7 in the second buffer pool 2 . The self-cleaning horizontal grid 12 includes horizontal grid bars 121 arranged at intervals along the vertical direction and rake teeth 122 interspersed between each grid 121 , and the rake teeth 122 are driven by a hydraulic cylinder 123 arranged behind the horizontal grid bars 121 . The hydraulic cylinder 123 drives the rake teeth 122 to move back and forth between the horizontal grid bars 121 to remove the sundries between the horizontal grid bars 121 . A flushing device 9 and a high-definition camera 10 are arranged symmetrically on the left and right sides of the storage tank 6, and the flushing device 9 is an intelligent injector.

The present invention also includes a control unit (not shown in the figure), the control unit includes a PLC controller and a SCADA system, and the control unit controls the submersible sewage pump 8, the flushing device 9, the high-definition camera 10, the liquid level sensor 11, and the self-cleaning horizontal grid. 12 for monitoring, the signal input end of the submersible sewage pump 8 is connected to the control unit, the storage tank 6 is provided with a liquid level sensor 11, and the signal output end of the liquid level sensor 11 passes through the control unit and the signal input end of the flushing device 9, a high-definition camera 10 signal input connections. The self-cleaning horizontal grid 12 also includes a grid liquid level sensor (not shown), the signal output end of the grid liquid level sensor is connected to the control unit, and the signal input end of the hydraulic cylinder is connected to the control unit. When the liquid level reaches the lowermost horizontal grille, the grille liquid level sensor transmits the signal to the hydraulic cylinder through the control unit, and the movement of the hydraulic cylinder drives the rake teeth to move, and the equipment runs automatically without interruption to scrape off the sundries stuck on the horizontal grille , Let the floating and suspended solids enter the downstream with the water flow and then concentrate on treatment.

The initial rainwater storage tank of the above-mentioned diversion system is only for urban rainwater, and the rainwater pipeline is connected with the urban water body. In order to prevent the urban water body from being polluted, all the initial rainwater in the rainwater pipeline must be collected into the storage tank; the urban sewage is treated by the sewage pipeline and sewage factory connected.

The working process of the initial rainwater storage tank of the above-mentioned diversion system is as follows: the initial rainwater flows from the inlet pipe 3 through the first buffer tank 1, and the connecting pipe 13 enters the second buffer tank 2. At this time, the first hydraulic automatic gate 5 is in the usual closed state. state, the second hydraulic automatic gate 7 is in the usual open state, and the rainwater enters the storage tank 6 by the second hydraulic automatic gate 7, and the self-cleaning grid 12 intercepts the floating and suspended matter in the rainwater of the storage tank 6. During the rainfall process, the equipment operates automatically without interruption, scraping off the sundries stuck on the horizontal grid bar 121, and allowing the floating and suspended matter to enter the downstream along with the water flow and then be concentrated for treatment. When the water level in the storage tank 6 reaches the maximum water level, as shown in Fig. 2, the closing water level 15 of the second hydraulic automatic gate, the buoyant tank chamber in the second hydraulic automatic gate 7 enters the water, and the buoyant tank drives the gate to close, and the rainwater Can't continue to enter in the storage pool 6 from the second buffer pool 2. At this time, water enters the float chamber 505 of the first hydraulic automatic gate 5, and the float 506 floats up. The counterweight 509 descends in conjunction with the float 506 through the wire rope 512 and then opens the water inlet 507. As shown in Figure 7-8, the water flows rapidly after entering. Enter the buoyancy tank chamber 504, the buoyancy tank 502 floats up to drive the gate 503 to open, and the rainwater enters the natural water body through the natural water body discharge port 4. The opening water level height of the first hydraulic automatic gate 5 is the height of the bottom of the second buffer pool 2. The purpose is to ensure that all rainwater is discharged to the natural water body in the later stage and avoid water accumulation in the second buffer pool 2. The connecting pipe 13 , the second buffer pool 2 , the first buffer pool 1 , and the bottom of the water inlet pipe 3 are all in the same level, completely avoiding the accumulation of water in the second buffer pool 2 .

After the rainfall ends, when the sewage treatment plant has the processing capacity, the rainwater in the storage tank 6 is pumped to the sewage pipe with the submersible sewage pump 8, and is discharged to the sewage treatment plant by the sewage pipe for processing. The submersible sewage pump 8 is turned on by the control unit, and the liquid level sensor 11 monitors the water level in the storage tank 6 in real time. When the water level of the adjustment storage tank 6 drops, the float 506 pulls the counterweight 509 to the top through the pulley 510 and the pulley 511. After flowing out, the buoyancy tank 502 sinks and drives the first hydraulic automatic gate 503 to close, as shown in Figure 9-10. When the water level of the storage tank 6 drops, the liquid level sensor 11 transmits the signal to the flushing device 9 through the control unit, and the intelligent injector of the flushing device 9 starts to stir, so that part of the sediment deposited at the bottom of the pool is taken away by the rainwater, and when the storage tank When the water level of 6 drops to the bottom of the pool, the liquid level sensor 11 transmits the signal to the flushing device 9 through the control unit, and the intelligent injector starts to flush the bottom of the pool. And the image signal is transmitted to the control unit, and the control unit divides the bottom of the storage tank into an intelligent grid area. If there is a stain at the bottom of the storage tank 6, the flushing device is controlled according to the coordinate relationship between the position of the stain and the flushing device 9. 9. The head of the water pump and the required angle of rotation enable the flushing device 9 to perform point-to-point cleaning on the stain position, and rinse the storage tank 6 clean. The entire flushing process does not require an external water source, and the flushing effect is better than that of the flap flushing door and hydraulic dumping bucket, and the sediment content in the water is small, so it will not silt the buffer pool and pipes. The storage tank system uses PLC as the core controller. During automatic control, it outputs control signals to field equipment and collects real-time data of equipment status to form a stable and reliable closed-loop control.

The above is only a specific embodiment of the present invention. It should be pointed out that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention shall be covered by the protection scope of the present invention. within.

Claims (10)

1. A diversion system initial stage rainwater storage pond, is characterized in that, comprises the natural water body discharge unit and the buffer adjustment and storage unit that are arranged along the flow direction, communicates with each other, and described natural water body discharge unit comprises the first buffer pool (1) and A first hydraulic automatic gate (5) that is normally closed in the first buffer tank (1) is provided, and a water inlet pipe (3) is provided upstream of the first hydraulic automatic gate (5) in the first buffer tank (1), A natural water outlet (4) is provided downstream; The buffer storage unit includes a second buffer pool (2) and a storage pool (6) communicated with the first buffer pool (1), and between the second buffer pool (2) and the storage pool (6) It communicates through the second hydraulic automatic gate (7) which is normally open, the storage tank (6) is located downstream of the second hydraulic automatic gate (7), and the bottom of the second buffer tank (2) is higher than or level with A submersible sewage pump (8) is arranged in the storage tank (6) at the height of the maximum storage water level of the storage tank (6). 2. The initial stage rainwater storage tank of diversion system as claimed in claim 1, characterized in that, the first hydraulic automatic gate (5) is an induction type hydraulic automatic gate that is normally closed, and the first hydraulic automatic gate ( 5) The height of the opening water level is the height of the bottom of the second buffer pool (2). 3. The initial stage rainwater storage tank of diversion system as claimed in claim 1, characterized in that, the second hydraulic automatic gate (7) is a buoyant box type downstream control weir gate, and the second hydraulic automatic gate (7) The closed water level height is the maximum retention water level height of the storage tank (6). 4. The initial stage rainwater storage tank of diversion system according to claim 1, characterized in that, a flushing device (9) and a high-definition camera (10) are arranged in the storage tank (6). 5. The initial stage rainwater storage tank of diversion system as claimed in claim 4, is characterized in that, also comprises control unit, and the signal input terminal of submersible sewage pump (8), the signal output terminal of high-definition camera (10) are all connected with control unit , the liquid level sensor (11) is arranged in the storage tank (6), and the signal output end of the liquid level sensor (11) is connected with the signal input end of the flushing device (9) through the control unit. 6. The initial stage rainwater storage tank of diversion system according to claim 4, characterized in that, the flushing device (9) and the high-definition camera (10) are respectively arranged on the left and right sides of the storage tank (6). 7. The initial stage rainwater storage tank of diversion system as claimed in claim 1, characterized in that, a self-cleaning horizontal grid (12) is provided upstream of the second hydraulic automatic gate (7) in the second buffer tank (2) , the self-cleaning horizontal grid (12) includes horizontal grid bars (121) arranged at intervals along the vertical direction and rake teeth (122) interspersed between each horizontal grid bar (121), and the rake teeth (122 ) is driven by a hydraulic cylinder (123) arranged behind the horizontal grid bar (121). 8. The initial stage rainwater storage tank of diversion system as claimed in claim 1, characterized in that, the first buffer tank (1) is communicated with the second buffer tank (2) through a connecting pipe (13), and the connecting pipe (13) The bottom is at the same height as the bottom of the second buffer tank (2). 9. The initial stage rainwater storage tank of diversion system as claimed in claim 8, characterized in that, the bottom of the first buffer tank (1) is at the same height as the bottom of the second buffer tank (2), and the water inlet pipe (3) ) bottom is at the same height as the bottom of the first buffer pool (1). 10. The initial stage rainwater storage tank of diversion system as claimed in claim 1, characterized in that, the bottom of the edge of the storage tank (6) is concave to form a water collection area (16), and the submersible sewage pump (8) is located at Inside catchment area (16).