CN104790517B - A kind of early-stage rainwater overflow grating of band vacuum draw slag removing function - Google Patents

Abstract

The present invention relates to the early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function, including: overflow partition wall, it is located in sump and sump hydroecium is divided into main hydroecium and overflow hydroecium；Grid, is located at overflow partition wall top, for intercepting the particulate form pollutant in rainwater；Also include: vacuum suction apparatus, be located at and catchment on the borehole wall, for aspirating the residue removed on grid.Compared with prior art, the residue on grid can be absorbed by vacuum suction apparatus of the present invention, uses the mode of vacuum draw can obtain more preferably residue elimination effect.

Description

An initial rainwater overflow grille with vacuum suction and slag removal function

technical field

The invention relates to a pollution reduction technology in the field of municipal drainage, in particular to an initial rainwater overflow grille with vacuum suction and slag removal function.

Background technique

For the urban combined drainage system, the initial rainwater that exceeds the interception capacity of the main drainage pipe is directly discharged into the urban river; for the urban diversion drainage system, the initial rainwater formed by rainfall is also directly discharged into the urban river. Since the initial rainwater carries a large amount of particulate pollutants, when the initial rainwater without any treatment is directly discharged into the urban river, it will cause serious pollution to the water environment quality and ecological environment of the river. At present, for the treatment of initial rainwater pollution, engineering measures such as rainwater storage tanks are often used to intercept and store initial rainwater. However, limited by factors such as site, economy, operation and maintenance, the volume of the rainwater storage tank cannot be made very large. Therefore, the problem of initial rainwater pollution is still very serious. It is a new technology emerging in recent years to intercept the particulate matter in the initial rainwater by using the overflow grid. However, the existing overflow grille technology has various deficiencies such as low interception efficiency of particulate pollutants, poor self-cleaning effect, easy damage to equipment, difficult maintenance and installation, and high engineering cost.

For example, the Chinese patent whose authorized notification number is CN 203878735 U discloses a kind of unpowered self-cleaning overflow grille system, including a grille for covering on the drain outlet, and several holes for drainage are provided on the top surface of the grille. The drainage groove and the top surface of the grille are arched outwards as a whole to form an outer arc-shaped curved surface. During the use of this utility model, the garbage is changed from being covered on the top surface of the grille in the form of surface contact to being intercepted on the outer arc-shaped surface of the grille of the utility model in the form of point contact or line contact. It is beneficial to intercept more garbage. However, when the distance between the arc-shaped grille bars is too large, the utility model may not be able to realize the function of the overflow grille. If the distance is too small, it cannot be cleaned thoroughly because there is no additional cleaning equipment. When there is a lot of dirt, clogging may occur.

Therefore, scientific and technological research and development and engineering technicians in this field are committed to developing a vacuum suction slag removal device with high particle state interception efficiency, good self-cleaning effect, simple design structure, good equipment stability, easy installation and maintenance, and low engineering cost. Functional primary stormwater overflow grating and method.

Contents of the invention

The object of the present invention is to provide an initial rainwater overflow grille with vacuum suction and slag removal function for water collection wells in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

An initial rainwater overflow grille with vacuum suction and slag removal function, including:

The overflow partition wall is set in the sump well and divides the sump well water chamber into the main water chamber and the overflow water chamber;

Grid, set on the top of the overflow partition wall, is used to intercept the particulate pollutants in the rainwater;

Also includes:

The vacuum suction device is installed on the wall of the water collection well, and is used to suck and remove the residue on the grid net.

The main water chamber is provided with a confluence water inlet pipe and a cutoff water outlet pipe;

The vacuum suction device includes:

cavity;

There are several air outlets, which are arranged on the cavity and arranged in a line, for the residue to pass through and enter the cavity;

The emptying pipe is respectively connected with the cavity and the intercepting outlet pipe, and is used for discharging the residue in the cavity to the intercepting outlet pipe.

The grid net is a semicircular long plate-shaped grid net, which is horizontally arranged on the top of the overflow partition wall and the axis is parallel to the overflow partition wall. The vacuum suction device also includes oscillating spinner;

The rotator controls the swing of the air outlet to suck away the residues at different positions of the semicircular long plate grid.

The axis when the air suction port swings coincides with the axis of the semicircular long plate grille.

The semicircular convex side of the grid net is arranged upward on the overflow partition wall.

The vacuum suction device also includes:

Exhaust fan, located in the emptying pipe, is used to drive the residue into the cavity and discharge to the intercepting outlet pipe;

The control component is respectively connected with the exhaust fan and the rotator, and is used for controlling the exhaust fan and the rotator to work.

The control assembly includes an automatic control unit, a starter, and a vacuum pump and a solenoid valve connected to each other. Extractor fan connection.

The cavity is provided with a plurality of air outlets, and the emptying pipe includes an emptying main pipe and a plurality of emptying branch pipes. One end of the emptying branch pipes is respectively connected to the air outlets one by one, and the other end is connected to the exhaust pipe. The input end of the empty main pipe is connected, and the output end of the empty main pipe is connected with the intercepting outlet pipe.

The number of the air outlets is consistent with the number of the air outlets, and the air outlets are arranged in a linear arrangement on the cavity and correspond to the positions of the air outlets one by one.

An overflow outlet pipe is arranged on the overflow water chamber, and the overflow outlet pipe is connected with the city receiving water body.

Compared with the prior art, the present invention has the following advantages:

1) The vacuum suction device can suck and remove the residue on the grid net, and the vacuum suction method can obtain a more ideal residue removal effect.

2) A plurality of exhaust outlets are set on the cavity and arranged in a linear shape, which can meet the adaptation of grids of different lengths. The air is stable.

3) The grid net is a semicircular long plate-shaped grid net, which can increase the surface area and strengthen the ability to remove particulate pollutants in overflow water.

4) The axis of the air exhaust port when it swings coincides with the axis of the semicircular long plate-shaped grille, which can realize that the air exhaust port is always close to the grid net to absorb and remove the residue.

5) One end of the evacuation branch pipe is respectively connected to the air outlets in one-to-one correspondence, so that the aerodynamic performance of each air outlet can be consistent.

6) The number of air outlets is consistent with the number of air outlets, and the air outlets are arranged in a linear arrangement on the cavity, and correspond to the position of the air outlets one by one, so that the aerodynamic performance of each air outlet can be consistent.

Description of drawings

Figure 1 is a schematic cross-sectional view of the layout of the water collection well and the overflow grid;

Figure 2 is a schematic top view of the layout structure of the water collection well and the overflow grid;

Fig. 3 is the structural representation of vacuum suction device;

Fig. 4 is the partial perspective structure schematic diagram of grid net;

Fig. 5 is a partial structural schematic diagram of the control assembly;

Among them: 1. Automatic control unit, 2. Vacuum pump, 3. Solenoid valve, 4. Rotator, 5. Grid mesh, 6. Vacuum suction device, 7. Air outlet, 8. Overflow partition wall, 9. Collector Water well, 10. Confluence inlet pipe, 11. Closure outlet pipe, 12. Flow limiting component, 13. Overflow outlet pipe, 14. Maximum operating water level of overflow grille, 15. Minimum operating water level of overflow grille, 16. Access escalator , 17, ultrasonic level gauge, 18, main water chamber, 19, overflow water chamber, 20, cavity, 21, emptying branch pipe, 22, emptying main pipe.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

An initial rainwater overflow grid with vacuum suction and slag removal function, as shown in Figure 1 and Figure 2, includes an overflow partition wall 8, a grid mesh 5 and a vacuum suction device 6, and the overflow partition wall 8 is set In the water collection well 9 and divide the water chamber of the water collection well 9 into a main water chamber 18 and an overflow water chamber 19, the bottom of the main water chamber 18 and the overflow water chamber 19 are separated by an overflow partition wall 8, and the top is communicated by a grid mesh 5, The main water chamber 18 is provided with a confluence inlet pipe 10 and an intercepting outlet pipe 11, an overflow water chamber 19 is provided with an overflow outlet pipe 13, and a grille 5 is arranged on the top of the overflow partition wall 8 for intercepting particles in the rainwater. Pollutants, the vacuum suction device 6 is located on the wall of the water collection well 9, and is used to suck and remove the residue on the grid net 5. The gap of the grid net 5 is 4.1 to 7.9 mm, preferably 6 mm. Made of stainless steel.

The water collection well 9 also includes an automatic flow limiting assembly 12, which is located at the junction of the interception outlet pipe 11 and the main water chamber 18, and the water collection well 9 is also provided with an access ladder 16, which is convenient for the staff to enter the bottom of the water collection well 9 to carry out Overhaul of water collection well 9.

As shown in Figure 3, the vacuum suction device 6 includes:

cavity 20;

There are a plurality of exhaust outlets 7, as shown in Figure 4, which are arranged on the cavity 20 and arranged in a line, for the residue to pass through and enter the cavity 20;

The emptying pipe is respectively connected with the cavity 20 and the intercepting outlet pipe 11, and is used to discharge the residue in the cavity 20 to the intercepting outlet pipe 11, and finally to the sewage treatment plant through the municipal sewage pipe.

The grid net 5 is a semi-circular long plate-shaped grid net 5, which is horizontally arranged on the top of the overflow partition wall 8 and the axis is parallel to the overflow partition wall 8. The vacuum suction device 6 also includes a fixed chamber 20 and a control The rotator 4 that the air outlet 7 swings;

The rotator 4 controls the air outlet 7 to swing 180 degrees to absorb the residue on the different positions of the semicircular long plate-shaped grid net 5 .

The axis when the air exhaust port 7 swings coincides with the axis of the semicircular long plate-shaped grille.

The semicircular convex side of the grid net 5 is arranged on the overflow partition wall 8 upwards.

The vacuum suction device 6 also includes:

The exhaust fan is arranged in the emptying pipe, and is used to drive the residue to enter the cavity 20 and discharge to the intercepting outlet pipe 11;

The control assembly is connected with the exhaust fan and the rotator 4 respectively, and is used to control the exhaust fan and the rotator 4 to work.

The overflow grid also includes a power supply assembly, which includes a water turbine, a generator and a storage battery connected in sequence. The water turbine is arranged at the junction of the overflow outlet pipe 13 and the interception outlet pipe 11. The generator and the storage battery are respectively connected to the control assembly and the exhaust fan. connect.

As shown in Figure 5, the control assembly includes an automatic control unit 1, a starter, and a vacuum pump 2 and a solenoid valve 3 that are connected to each other. 4 connection, the starter is connected with the exhaust fan, and the automatic control unit 1 adjusts the working frequency and the pumping frequency of the rotator 4 of the vacuum suction device 6 according to the height of the water level in the drainage system sump 9 (especially the main water chamber 18) when it rains. The wind power of the fan, the liquid level information in the water collection well 9 is measured by the ultrasonic liquid level gauge 17, and the ultrasonic liquid level gauge 17 is connected with the automatic control unit 1. In addition, the automatic control unit 1, the vacuum pump 2, and the electromagnetic valve 3 are all located at In the separate working room outside the drainage system sump 9. .

The parameters and models of vacuum pump 2, solenoid valve 3, rotator 4, grid net 5, vacuum aspirator 6 and emptying pipe 7 are determined according to the specific parameters of the urban drainage system area served and the initial rainwater overflow facilities.

The cavity 20 is provided with a plurality of air outlets, and the emptying pipe includes an emptying main pipe 22 and a plurality of emptying branch pipes 21. One end of the emptying branch pipe 21 is respectively connected with the air outlets one by one, and the other end is connected with the emptying dry pipe. The input end of the pipe 22 is connected, and the output end of the emptying main pipe 22 is connected with the cut-off outlet pipe 11 .

The number of air outlets is consistent with the number of the air outlets 7 , and the air outlets are arranged in a linear arrangement on the cavity 20 and correspond to the positions of the air outlets 7 one by one.

The overflow water chamber 19 is provided with an overflow outlet pipe 13, and the overflow outlet pipe 13 is connected with the city receiving water body.

The usage method of the above-mentioned overflow grill specifically includes three modes: non-rainfall mode, regular mode during rainfall and preventive self-cleaning mode during rainfall:

Wherein, the non-rainfall mode specifically includes the following steps:

a. The ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is lower than the minimum water level 15 of the overflow grid, the automatic control unit 1 controls the vacuum pump 2, the solenoid valve 3 and the starter to stop working;

b. According to the set preventive overflow grille self-cleaning cycle, the automatic control unit 1 regularly controls the vacuum pump 2, the solenoid valve 3 and the starter to start, and then drives the rotator 4 and the exhaust fan to start, and the rotator 4 drives the exhaust port to press Set the regular frequency to swing 180 degrees to maintain and clean the grille 5 .

The routine pattern during rainfall includes the following steps:

a. After the rain starts, the ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is higher than the minimum water level 15 of the overflow grid, the grid 5 starts to intercept the particulate pollutants in the initial rainwater.

b. According to the set routine self-cleaning cycle of the overflow grille, the automatic control unit 1 controls the vacuum pump 2, the solenoid valve 3 and the starter to start, and then drives the rotator 4 and the exhaust fan to start, and the rotator 4 drives the exhaust port to operate according to the set Make a 180-degree swing at a regular frequency to maintain and clean the grille 5.

c. The residues cleaned on the grid net 5 are discharged into the intercepting outlet pipe 11 through the cavity 20, the emptying branch pipe 21 and the emptying main pipe 22 in sequence, and are transported to the sewage treatment plant through the intercepting outlet pipe 11.

d. When the rain stops, the ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is lower than the minimum water level 15 of the overflow grid, the automatic control unit 1 controls the vacuum pump 2, the solenoid valve 3 and the starter to stop working .

The preventive self-cleaning mode during rainfall specifically includes the following steps:

a. After the rain starts, the ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is higher than the minimum water level 15 of the overflow grid, the grid 5 starts to intercept the particulate pollutants in the initial rainwater.

b. According to the set routine self-cleaning cycle of the overflow grille, the automatic control unit 1 controls the vacuum pump 2, the solenoid valve 3 and the starter to start, and then drives the rotator 4 and the exhaust fan to start, and the rotator 4 drives the exhaust port to operate according to the set Make a 180-degree swing at a regular frequency to maintain and clean the grille 5.

c. The residues cleaned on the grid net 5 are discharged into the intercepting outlet pipe 11 through the cavity 20, the emptying branch pipe 21 and the emptying main pipe 22 in sequence, and are transported to the sewage treatment plant through the intercepting outlet pipe 11.

d. The ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is higher than the maximum water level 14 of the overflow grille, the automatic control unit 1 controls according to the set preventive overflow grille self-cleaning cycle. Start the vacuum pump 2, solenoid valve 3 and starter, and increase the power of vacuum pump 2, solenoid valve 3 and exhaust fan, and then drive the rotator 4 and the exhaust fan to normally open, and the rotator 4 drives the vacuum aspirator 6 according to the set routine The frequency rotator 4 drives the air outlet to swing 180 degrees according to the set conventional frequency, and strengthens the maintenance and cleaning of the grid mesh 5 .

e. The ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is lower than the maximum water level 14 of the overflow grille, the automatic control unit 1 controls according to the set routine overflow grille self-cleaning cycle. The vacuum pump 2, solenoid valve 3 and starter work, and then drive the rotator 4 and the exhaust fan to start. The rotator 4 drives the vacuum suction device 6 to operate at the set conventional frequency. Swing, carry out routine maintenance and cleaning to the grid mesh 5.

f. When the rain stops, the ultrasonic liquid level gauge 17 detects the water level in the main water chamber 18 in real time. When the water level is lower than the minimum water level 15 of the overflow grid, the automatic control unit 1 controls the vacuum pump 2, the solenoid valve 3 and the starter to stop working .

Claims (10)

1. an early-stage rainwater overflow grating for band vacuum draw slag removing function, including:

Overflow partition wall, is located in sump and sump hydroecium is divided into main hydroecium and overflow hydroecium；

Grid, is located at overflow partition wall top, for intercepting the particulate form pollutant in rainwater；

It is characterized in that, also include:

Vacuum suction apparatus, is located at and catchments on the borehole wall, for aspirating the residue removed on grid.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 1, its Being characterised by, described main hydroecium is provided with interflow water inlet pipe and the outlet pipe that dams；

Described vacuum suction apparatus includes:

Cavity；

Suction opeing, is provided with multiple altogether, is located on cavity and in the linear alignment, passes through for residue and enter cavity；

Evacuated tube, is connected with cavity and the outlet pipe that dams respectively, for arranging the residue in cavity to the outlet pipe that dams.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 2, its Being characterised by, described grid is semicircle long plate shape grid, and level is located at overflow partition wall top and axis and is overflow Stream partition wall is parallel, and described vacuum suction apparatus also includes for fixed cavity and controls the rotator that suction opeing swings；

Described rotator controls suction opeing and swings, to absorb the residue on semicircle long plate shape grid diverse location.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its It is characterised by, axis when described suction opeing swings and the dead in line of semicircle long plate shape grid.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its Being characterised by, the semi-cylindrical hill of described grid is arranged on overflow partition wall on the side.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 3, its Being characterised by, described vacuum suction apparatus also includes:

Extraction fan, is located in evacuated tube, is used for driving residue to enter cavity and row to the outlet pipe that dams；

Control assembly, be connected with extraction fan and rotator respectively, be used for controlling extraction fan and rotator functions.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 6, its Being characterised by, described control assembly includes automatic control unit, trigger and interconnective vacuum pump and electromagnetism Valve, described automatic control unit is connected with trigger, vacuum pump and electromagnetic valve respectively, described electromagnetic valve and rotator Connecting, described trigger is connected with extraction fan.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 2, its Being characterised by, described cavity is provided with multiple venthole, and described evacuated tube includes emptying main and multiple emptying arm, One end of described emptying arm connects one to one with venthole respectively, and the other end all connects with the input emptying main Connecing, the outfan of described emptying main is connected with the outlet pipe that dams.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 8, its Being characterised by, the number of described venthole is consistent with the number of suction opeing, and described venthole is that the linear alignment is located at chamber On body, and with the position one_to_one corresponding of suction opeing.

The early-stage rainwater overflow grating of a kind of band vacuum draw slag removing function the most according to claim 1, its Being characterised by, described overflow hydroecium is provided with overflow outlet pipe, and this overflow outlet pipe is connected with city receiving water body.