CN211735691U

CN211735691U - Gutter inlet capable of intercepting initial rainwater

Info

Publication number: CN211735691U
Application number: CN201921973397.7U
Authority: CN
Inventors: 王廷根
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-10-23
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to the technical field of urban drainage facilities, in particular to a rainwater port capable of intercepting initial rainwater, which comprises a drainage well, a floating control flow regulating valve, a flow guiding device, a buoy component, a baffle component, a water inlet grate, a sewage pipeline and a rainwater pipeline, wherein the sewage pipeline and the rainwater pipeline are respectively arranged at two sides of the drainage well, the floating control flow regulating valve is arranged inside the drainage well, the valve end is coaxially arranged at the mouth of the sewage pipeline, the inner side of the drainage well is also provided with a limit block, the buoy end of the floating control flow regulating valve is arranged on the limit block, the baffle component is arranged in the middle of the drainage well and divides the drainage well into a rainwater and sewage mixing chamber and a drainage chamber, the buoy component and the baffle component are coaxially arranged in the rainwater and sewage mixing chamber, the bottoms of the baffle component and the buoy component are both pressed at the bottom end of the drainage well, the flow guiding device is arranged above the baffle, the water inlet grate is arranged at the upper port of the drainage well, and the device has the advantages of simple structure, easy installation, low manufacturing cost and obvious flow dividing effect.

Description

Gutter inlet capable of intercepting initial rainwater

Technical Field

The utility model relates to a town drainage facility technical field, concretely relates to inlet for stom water that can damming initial stage rainwater.

Background

When rainfall occurs, due to various reasons such as human activities, dust fall, vehicle driving, lack of sanitary facilities and the like, certain pollutants can be accumulated on the ground and enter a drainage pipeline along with the rainfall, so that certain pollution is generated. In addition, sewage (swill) from roadside catering is poured from a rainwater inlet, irregular vehicle washing, garbage sprinkling, outdoor vegetable market, fire fighting, traffic accidents and other reasons can cause pollutants to enter a rainwater pipeline, and the rainwater is called initial rainwater and is easy to cause serious damage to the environment; the measure that people taken at present sets up at a certain position of rainwater pipeline system and dams the facility (vatch basin), dams initial stage rainwater to the regulation pond, adopts sediment, cyclone separation or carry initial stage rainwater to sewage treatment plant and handle, however, to rainwater drainage pipeline system, because the position apart from the vatch basin is far and near different, the rainwater arrival time difference is very big: in the place close to the intercepting well, the initial rainwater quickly reaches the intercepting well; and in a far place, when the initial rainwater reaches the intercepting well, the initial rainwater at the near place is already past, and the initial rainwater entering the intercepting well is not the initial rainwater any more. In order to obtain better collection effect, a large number of intercepting wells are often required to be arranged, which causes high cost and is not beneficial to popularization and application.

Chinese patent CN201821851527.5 discloses a gutter inlet with a flap which can intercept initial rainwater. The rainwater inlet with the turnover plate capable of intercepting initial rainwater comprises a rainwater well, a water inlet grate covering the upper end opening of the rainwater well, and a rainwater pipeline and a sewage pipeline which are arranged at the positions, close to the lower end, of the rainwater well, wherein the bottom end of the rainwater well is fixedly provided with an isolation wall which divides the rainwater well into two parts, and the rainwater pipeline and the sewage pipeline are respectively positioned at two sides of the isolation wall; the upper end of the isolation wall is movably provided with a rotating plate which can turn over at two sides of the isolation wall, the lower end surface of the rotating plate at the same side with the rainwater pipeline is fixedly provided with a water collecting tank, and the lower end surface of the rotating plate at the same side with the sewage pipeline is fixedly provided with a heavy object block; and a baffle is fixedly arranged on the inner wall of the catch basin.

The device shunts through turning over the board, and the rotation point structure is stable inadequately, and it is more troublesome to maintain.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can cut off inlet for stom water of initial stage rainwater, the device simple structure, easily installation, low in cost, and the reposition of redundant personnel effect is obvious.

To achieve the purpose, the utility model adopts the following technical proposal: the utility model provides a can cut off inlet for stom water of initial stage rainwater, including the drainage shaft, it adjusts the valve to float accuse, guiding device, the flotation pontoon subassembly, the baffle subassembly, it combs to advance water, sewer line and sewer line set up the both sides at the drainage shaft respectively, it adjusts the valve setting at the inside and valve-end coaxial setting of drainage shaft at the sewer line mouth to float accuse, the drainage shaft inboard still is provided with the stopper, it adjusts the flotation pontoon end of valve to float accuse and places on the stopper, the baffle subassembly sets up in the middle of the drainage shaft and divide into dirty mixing chamber of rain and drainage chamber with the drainage shaft, the flotation pontoon subassembly sets up at dirty mixing chamber of rain with the baffle subassembly coaxial direction, the bottom of baffle subassembly and flotation pontoon subassembly all supports the bottom at the drainage shaft, guiding device sets up in baffle subassembly top, guiding device slope is towards dirty mixing chamber of rain, it sets up the upper port at the.

As an optimal scheme of the inlet for stom water that can cut off initial stage rainwater, it adjusts the flow valve to float accuse including the base plate, the flashboard, the sealing washer, rotate the seat, first flotation pontoon and rocking arm, be provided with the sluice gate on the base plate, the sluice gate end coaxial setting of base plate is on sewage pipe, the coaxial setting of sealing washer is on the sluice gate, it sets up the upper portion at the flashboard to rotate the seat, the one end setting of rocking arm is in the one end of first flotation pontoon, the rotation end of flashboard and the other end fixed connection of rocking arm, the rotation end rotation of flashboard is installed on rotating the seat, under the non-rainfall state, first flotation pontoon supports and presses on the stopper.

As an optimal scheme of the gutter inlet capable of intercepting initial rainwater, the flow guide device comprises a flow guide plate and a support, the flow guide plate is obliquely arranged on the upper part of the drainage well through the support, and the bottom end of the flow guide plate faces the rainwater and sewage mixing chamber.

As an optimal selection scheme of the inlet for stom water that can cut off initial stage rainwater, the vertical slide rail that is provided with in both sides of the inside dirty mixing chamber of rain of drainage well, the flotation pontoon subassembly is including the flotation pontoon baffle, first arrangement frame and second flotation pontoon, first arrangement frame sets up the top at the flotation pontoon baffle along the axial is perpendicular, the second flotation pontoon is along the bottom of radial fixed mounting at first arrangement frame, the both ends of first arrangement frame are provided with the slider, first arrangement frame slides through the slider and sets up in the slide rail, flotation pontoon baffle bottom is supported and is pressed in the bottom of drainage well and one side that the flotation pontoon baffle was located the one side of baffle subassembly.

As an optimal scheme of inlet for stom water of initial stage rainwater can cut off, the baffle subassembly is including the fixed plate, the fly leaf, second place frame and third flotation pontoon, fixed plate fixed mounting is in drainage well center bottom, fixed plate bottom level is higher than the bottom of drainage well, one side align to grid that the fixed plate is located the dirty mixing chamber of rain, the spout is located the dirty one side of mixing chamber of rain, one side of fly leaf is provided with the guide post the same with the spout figure, the fly leaf passes through the guide post gomphosis in the spout, the fly leaf bottom is supported and is pressed in the bottom of drainage well, guide post and spout clearance fit, the second place frame sets up the top at the fly leaf along the axial is perpendicular, one side of second place frame is towards the flotation pontoon subassembly, third flotation pontoon fixed mounting is.

As a preferred scheme of the rainwater inlet capable of intercepting initial rainwater, the floating barrel baffle and the movable plate are both made of light waterproof materials.

The utility model has the advantages that:

during initial precipitation, the water flow is small, rainwater flows into the drainage well through the water inlet grate, the rainwater flows to the rainwater and sewage mixing chamber under the flow guiding effect of the flow guiding device, and the floating barrel end of the floating control flow regulating valve is arranged on the limiting block, so that a certain gap is formed at the gate end of the floating control flow regulating valve, the initial rainwater flows to a sewage pipeline from the rainwater and sewage mixing chamber, and the initial sewage is convenient to collect and treat;

when the water flow is large, the speed of rainwater flowing to the rainwater and sewage mixing chamber is higher than the speed of rainwater flowing to a sewage pipeline from the rainwater and sewage mixing chamber, so that the rainwater in the rainwater and sewage mixing chamber is accumulated, when a certain amount of rainwater is reached, the buoy end of the floating control flow regulating valve leaves the limiting block under the buoyancy effect of water, so that the gate of the floating control flow regulating valve is closed, so that the rainwater is continuously accumulated, meanwhile, the buoy component moves upwards under the buoyancy effect of the water, so that the bottom end of the buoy component is separated from the bottom end of the drainage well, the rainwater passes through the baffle component, the movable end of the baffle component moves upwards under the buoyancy effect of the water, so that the rainwater can flow to the drainage chamber from the rainwater and sewage mixing chamber and then flows to the rainwater pipeline from the drainage chamber, and at;

when not rainfall or rainfall volume reduction, the speed of rainwater flow direction rain dirty mixing chamber is less than the speed of rainwater from rain dirty mixing chamber flow direction drainage chamber, thereby make the water yield in the rain dirty mixing chamber reduce gradually, support to press in the bottom of drainage shaft until the bottom of flotation pontoon subassembly, and baffle subassembly bottom supports to press in the bottom of drainage shaft, the flotation pontoon end of superficial accuse flow control valve supports to press on the stopper, certain clearance is opened to the valve of superficial accuse flow control valve, thereby make the rainwater flow direction sewage pipe who remains in rain dirty mixing chamber, wait for the next rainfall up to the rainwater drain.

The device simple structure, easily installation, low in cost, and the reposition of redundant personnel effect is obvious.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a front view of a gutter inlet for intercepting initial rainwater according to an embodiment of the present invention;

fig. 2 is a side view of a drainage well of a gully for intercepting initial rainwater according to an embodiment of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

fig. 4 is a perspective view of a float-controlled flow regulating valve of a gutter inlet capable of intercepting initial rainwater according to an embodiment of the present invention;

fig. 5 is a perspective view of a float bowl assembly of a gutter inlet for intercepting initial rainwater according to an embodiment of the present invention;

fig. 6 is a perspective view of a guiding device of a gutter inlet capable of intercepting initial rainwater according to an embodiment of the present invention;

fig. 7 is a first perspective view of a baffle assembly of a gully capable of intercepting initial rainwater according to an embodiment of the present invention;

fig. 8 is a second perspective view of a baffle assembly of a gutter inlet capable of intercepting initial rainwater according to an embodiment of the present invention;

in the figure:

1. a drainage well; 1a, a limiting block; 1b, a slide rail;

2. a float control flow regulating valve; 2a, a substrate; 2b, a gate plate; 2c, a sealing ring; 2d, rotating the base; 2e, a first buoy; 2f, a rocker arm;

3. a flow guide device; 3a, a guide plate; 3b, a bracket;

4. a float assembly; 4a, a buoy baffle; 4b, a first placing frame; 4b1, slider; 4c, a second buoy;

5. a baffle assembly; 5a, fixing plates; 5a1, a chute; 5b, a movable plate; 5b1, guide post; 5c, a second placing frame; 5d, a third buoy;

6. a water inlet grate;

7. a sewage conduit;

8. a rainwater pipeline.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are used only for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms will be understood by those skilled in the art according to the specific circumstances.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being either a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the gutter inlet capable of intercepting initial rainwater comprises a drainage well 1, a floating control flow regulating valve 2, a flow guiding device 3, a buoy assembly 4, a baffle assembly 5, a water inlet grate 6, a sewage pipeline 7 and a rainwater pipeline 8, wherein the sewage pipeline 7 and the rainwater pipeline 8 are respectively arranged at two sides of the drainage well 1, the floating control flow regulating valve 2 is arranged in the drainage well 1, a valve end is coaxially arranged at a port of the sewage pipeline 7, a limiting block 1a is further arranged at the inner side of the drainage well 1, the buoy end of the floating control flow regulating valve 2 is arranged on the limiting block 1a, the baffle assembly 5 is arranged in the middle of the drainage well 1 and divides the drainage well 1 into a rainwater and sewage mixing chamber and a drainage chamber, the buoy assembly 4 and the baffle assembly 5 are coaxially arranged in the rainwater and sewage mixing chamber, the bottom ends of the baffle assembly 5 and the buoy assembly 4 are both pressed against the bottom end of the drainage well, the flow guiding device 3 is arranged, the guiding device 3 inclines towards the rain and sewage mixing chamber, and the water inlet grate 6 is arranged at the upper end of the drainage well 1.

During initial precipitation, the water flow is small, rainwater flows into the drainage well 1 through the water inlet grate 6, under the flow guiding effect of the flow guiding device 3, the rainwater flows into the rainwater and sewage mixing chamber, the floating barrel end of the floating control flow regulating valve 2 is arranged on the limiting block 1a, so that a certain gap is formed at the gate end of the floating control flow regulating valve 2, the initial rainwater flows into the sewage pipeline 7 from the rainwater and sewage mixing chamber, and the initial sewage is convenient to collect and treat;

when the water flow is large, the speed of rainwater flowing to the rainwater and sewage mixing chamber is higher than the speed of rainwater flowing to the sewage pipeline 7 from the rainwater and sewage mixing chamber, so that the rainwater in the rainwater and sewage mixing chamber is accumulated, when a certain amount of rainwater is reached, the buoy end of the floating control flow regulating valve 2 leaves the limiting block 1a under the buoyancy action of water, so that the gate of the floating control flow regulating valve 2 is closed, so that the rainwater is continuously accumulated, meanwhile, the buoy component 4 moves upwards under the buoyancy action of water, so that the bottom end of the buoy component 4 is separated from the bottom end of the drainage well 1, the rainwater passes through the baffle component 5, the movable end of the baffle component 5 moves upwards under the buoyancy action of water, so that the rainwater can flow to the drainage chamber from the rainwater and sewage mixing chamber and then flows to the rainwater pipeline 8 from the drainage chamber, and at the moment;

when not rainfall or rainfall volume diminishes, the speed that the rainwater flows to the dirty mixing chamber of rain is less than the speed that the rainwater flows to the drainage chamber from the dirty mixing chamber of rain to make the water yield in the dirty mixing chamber of rain reduce gradually, support to press in the bottom of drainage well 1 until the bottom of flotation pontoon subassembly 4, and baffle subassembly 5 bottom supports to press in the bottom of drainage well 1, the flotation pontoon end of floating accuse flow control valve 2 supports to press on stopper 1a, certain clearance is opened to the valve of floating accuse flow control valve 2, thereby make the rainwater that remains in the dirty mixing chamber of rain flow to sewer line 7, wait for the next rainfall till the rainwater is arranged to the greatest extent.

The floating control flow regulating valve 2 comprises a base plate 2a, a gate plate 2b, a sealing ring 2c, a rotating seat 2d, a first buoy 2e and a rocker arm 2f, a gate opening is formed in the base plate 2a, the gate opening end of the base plate 2a is coaxially arranged on a sewage pipeline 7, the sealing ring 2c is coaxially arranged on the gate opening, the rotating seat 2d is arranged on the upper portion of the gate plate 2b, the first buoy 2e is arranged on the upper portion of the gate opening, one end of the rocker arm 2f is arranged at one end of the first buoy 2e, the rotating end of the gate plate 2b is fixedly connected with the other end of the rocker arm 2f, the rotating end of the gate plate 2b is rotatably arranged on the rotating seat 2e, and the first buoy 2e is abutted against a limiting block 1a in a non-.

Float accuse flow control valve 2 and open through buoyancy to sewage pipe 7's water inlet and close, before the rainfall, first flotation pontoon 2e supports and presses on stopper 1a, thereby make flashboard 2b and the gate opening with rocking arm 2f fixed connection have certain clearance, thereby make the initial stage rainwater can flow in sewage pipe 7 from the clearance, when the rainfall is great, the water yield increase in the dirty mixing chamber of rain, thereby make first flotation pontoon 2e use to rotate seat 2d and upwards rotate as the axle center, thereby make flashboard 2b close the gate opening, and the sealing strip can prevent the later stage rainwater from gate opening flow direction sewage pipe 7.

The flow guide device 3 comprises a flow guide plate 3a and a support 3b, the flow guide plate 3a is obliquely arranged on the upper part of the drainage well 1 through the support 3b, and the bottom end of the flow guide plate 3a faces the rain and sewage mixing chamber.

Guiding device 3 is used for getting into the dirty mixing chamber of rain of drainage shaft 1 with the rainwater guide, and support 3b is used for with guide plate 3a fixed mounting on the upper portion of drainage shaft 1, and when the rainwater was from drainage shaft 1 whereabouts, the rainwater can fall into the dirty mixing chamber of rain from the guide plate 3a of slope to make the rainwater shunt the processing at dirty mixing chamber of rain.

The both sides of the inside rain and sewage mixing chamber of drainage shaft 1 are vertical to be provided with slide rail 1b, flotation pontoon subassembly 4 is including flotation pontoon baffle 4a, first arrangement frame 4b and second flotation pontoon 4c, first arrangement frame 4b sets up the top at flotation pontoon baffle 4a along the axial is perpendicular, second flotation pontoon 4c is along the bottom of radial fixed mounting at first arrangement frame 4b, the both ends of first arrangement frame 4b are provided with slider 4b1, first arrangement frame 4b slides through slider 4b1 and sets up in slide rail 1b, flotation pontoon baffle 4a bottom is supported and is pressed in the bottom of drainage shaft 1 and one side of flotation pontoon baffle 4a is located one side of baffle subassembly 5.

The buoy component 4 is used for first-level diversion, later stage rainwater is guided to flow into the drainage chamber of the drainage well 1, when the precipitation is large, rainwater in the rainwater-sewage mixing chamber is accumulated, when the horizontal plane is gradually higher than the bottom end of the second buoy 4c, the second buoy 4c is under the buoyancy action of water and the limiting action of the slide rail 1b, the second buoy 4c drives the first placing frame 4b and the buoy baffle 4a to vertically move upwards, so that the bottom end of the buoy baffle 4a is separated from the bottom end of the water inlet well, so that the movable end of the baffle component 5 is opened, so that rainwater can flow into the drainage chamber from the rainwater-sewage mixing chamber, the sliding block 4b1 is limited in the sliding groove 5a1, when the precipitation is reduced, the rainwater in the rainwater-sewage mixing chamber is reduced, so that the second buoy 4c is reduced along with the water plane, so that the buoy baffle 4a falls, so that the bottom end of the buoy baffle 4a is pressed at the bottom end of the, thereby blocking the flow of rainwater to the drain chamber.

The baffle plate component 5 comprises a fixed plate 5a, a movable plate 5b, a second placing frame 5c and a third buoy 5d, the fixed plate 5a is fixedly installed at the bottom of the center of the drainage well 1, the horizontal plane of the bottom end of the fixed plate 5a is higher than the bottom end of the drainage well 1, sliding chutes 5a1 are uniformly arranged on one side of the fixed plate 5a, the sliding chutes 5a1 are positioned on one side of the rain and sewage mixing chamber, guide posts 5b1 with the same number as the sliding chutes 5a1 are arranged on one side of the movable plate 5b, the movable plate 5b is embedded in the sliding chutes 5a1 through the guide posts 5b1, the bottom end of the movable plate 5b is pressed against the bottom end of the drainage well 1, the guide column 5b1 is in clearance fit with the sliding groove 5a1, the second placing frame 5c is vertically arranged at the top end of the movable plate 5b along the axial direction, one side of the second placing frame 5c faces the buoy component 4, and the third buoy 5d is fixedly arranged at the bottom end of the second placing frame 5 c.

Baffle subassembly 5 is used for the second grade water conservancy diversion, with the later stage rainwater from dirty mixing chamber guide flow direction drainage chamber of rain, when rainfall is great, flotation pontoon subassembly 4 opens, the rainwater is through baffle subassembly 5, third flotation pontoon 5d is under the buoyancy of water and the limiting displacement of spout 5a1, drive first arrangement frame 4b and fly leaf 5b rebound, thereby make fly leaf 5b bottom break away from the bottom of drainage well 1, thereby open the passageway, make the rainwater can follow dirty mixing chamber flow direction drainage chamber, guide post 5b1 and when the rainfall reduces, the water yield in the dirty mixing chamber of rain reduces gradually, thereby make third flotation pontoon 5d reduce along with the water level, thereby make fly leaf 5b fall, make the bottom of fly leaf 5b support again and press in the bottom of drainage well 1, thereby block the rainwater and flow to the drainage chamber.

The pontoon baffle plate 4a and the movable plate 5b are both made of light waterproof materials.

Buoy baffle 4a and fly leaf 5b are light waterproof material and can be so that when rainfall is less, buoy baffle 4a and fly leaf 5 b's bottom can support and press in the bottom of drainage well 1 to block initial stage rainwater flow direction drainage chamber, and when rainfall is great, buoy baffle 4a and fly leaf 5b can upwards remove under the buoyancy of flotation pontoon, thereby make the later stage rainwater can flow to drainage chamber.

The utility model discloses a theory of operation:

It should be understood that the above-described embodiments are merely illustrative of the preferred embodiments of the present invention and the technical principles thereof. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, these modifications are within the scope of the present invention as long as they do not depart from the spirit of the present invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A rainwater inlet capable of intercepting initial rainwater is characterized by comprising a drainage well (1), a floating control flow regulating valve (2), a flow guiding device (3), a buoy component (4), a baffle component (5), a water inlet grate (6), a sewage pipeline (7) and a rainwater pipeline (8), wherein the sewage pipeline (7) and the rainwater pipeline (8) are respectively arranged at two sides of the drainage well (1), the floating control flow regulating valve (2) is arranged in the drainage well (1), the valve end is coaxially arranged at the opening of the sewage pipeline (7), the inner side of the drainage well (1) is also provided with a limit block (1 a), the buoy end of the floating control flow regulating valve (2) is placed on the limit block (1 a), the baffle component (5) is arranged in the middle of the drainage well (1) and divides the drainage well (1) into a rainwater and sewage mixing chamber and a drainage chamber, the buoy component (4) and the baffle component (5) are coaxially arranged in a rainwater and sewage mixing chamber, baffle subassembly (5) and flotation pontoon subassembly (4) bottom all support and press in the bottom of blowdown well, and guiding device (3) set up in baffle subassembly (5) top, and guiding device (3) slope is towards the dirty mixing chamber of rain, and comb (6) of intaking sets up the last port in drainage well (1).

2. A gully for intercepting primary rainwater according to claim 1, wherein the float-controlled flow control valve (2) comprises a base plate (2 a), a shutter plate (2 b) and a sealing ring (2 c), rotate seat (2 d), first flotation pontoon (2 e) and rocking arm (2 f), be provided with the sluice gate on base plate (2 a), the sluice gate end coaxial setting of base plate (2 a) is on sewage pipe (7), sealing washer (2 c) coaxial setting is on the sluice gate, it sets up the upper portion at flashboard (2 b) to rotate seat (2 d), the one end setting of rocking arm (2 f) is in the one end of first flotation pontoon (2 e), the rotation end of flashboard (2 b) and the other end fixed connection of rocking arm (2 f), the rotation end rotation of flashboard (2 b) is installed on rotating seat (2 d), under the non-rainfall state, first flotation pontoon (2 e) support and press on stopper (1 a).

3. A gutter inlet for intercepting initial rainwater according to claim 1, wherein the guiding means (3) comprises a guiding plate (3 a) and a bracket (3 b), the guiding plate (3 a) is obliquely arranged on the upper part of the drainage shaft (1) through the bracket (3 b), and the bottom end of the guiding plate (3 a) faces the rainwater and sewage mixing chamber.

4. The gutter inlet capable of intercepting initial rainwater according to claim 1, wherein sliding rails (1 b) are vertically arranged on two sides of a rainwater and sewage mixing chamber in the drainage well (1), the buoy assembly (4) comprises a buoy baffle (4 a), a first placing frame (4 b) and a second buoy (4 c), the first placing frame (4 b) is vertically arranged at the top end of the buoy baffle (4 a) along the axial direction, the second buoy (4 c) is fixedly arranged at the bottom end of the first placing frame (4 b) along the radial direction, sliding blocks (4 b 1) are arranged at two ends of the first placing frame (4 b), the first placing frame (4 b) is slidably arranged in the sliding rails (1 b) through the sliding blocks (4 b 1), the bottom end of the buoy baffle (4 a) is pressed against the bottom end of the drainage well (1), and one side of the buoy baffle (4 a) is located on one side of the baffle assembly (5).

5. The gutter inlet capable of intercepting initial rainwater according to claim 1, wherein the baffle assembly (5) comprises a fixed plate (5 a), a movable plate (5 b), a second mounting frame (5 c) and a third buoy (5 d), the fixed plate (5 a) is fixedly installed at the bottom of the center of the drainage well (1), the horizontal plane of the bottom end of the fixed plate (5 a) is higher than the bottom end of the drainage well (1), sliding chutes (5 a 1) are uniformly arranged on one side of the fixed plate (5 a) located in the rainwater and sewage mixing chamber, the sliding chutes (5 a 1) are located on one side of the rainwater and sewage mixing chamber, guide posts (5 b 1) with the same number as the sliding chutes (5 a 1) are arranged on one side of the movable plate (5 b), the movable plate (5 b) is embedded in the sliding chute (5 a 2) through the guide posts (5 b 1), the bottom end of the movable plate (5 b) is pressed against the bottom end of the drainage well (1), and the guide posts (5 b 38964) are in clearance fit with the sliding chutes (5, the second placing frame (5 c) is vertically arranged at the top end of the movable plate (5 b) along the axial direction, one side of the second placing frame (5 c) faces the buoy component (4), and the third buoy (5 d) is fixedly arranged at the bottom end of the second placing frame (5 c).

6. A gutter inlet for intercepting early rainwater according to claim 4 or 5, wherein the float baffle (4 a) and the movable plate (5 b) are made of light waterproof material.