CN220469056U - Initial flow discarding facility - Google Patents

Abstract

The utility model relates to a class facility is abandoned in initial stage relates to rainwater treatment technical field, including rainwater collection well, water purification emission pipeline, sewage emission pipeline and control assembly, the processing chamber has been seted up in the rainwater collection well, the rainwater collection mouth has been seted up to the processing chamber top, water purification emission pipeline and sewage emission pipeline set up in the processing chamber bottom, control assembly includes the floater, the floater is located the processing intracavity, the processing intracavity is provided with a water line that floats, when the floater is located under the water line that floats, control assembly controls water purification emission pipeline closure, sewage emission pipeline is opened, when the floater rises and surpasss the water line that floats, control assembly controls water purification emission pipeline to open, sewage emission pipeline closure. The application shunts initial rainwater and middle and later period rainwater through the control assembly according to the water level change in the treatment cavity, reduces the quantity of the middle and later period rainwater entering the sewage treatment plant from the sewage discharge pipeline, and lightens the water conservancy load of the sewage treatment plant.

Description

Initial flow discarding facility

Technical Field

The application relates to the technical field of rainwater treatment, in particular to an initial drainage facility.

Background

Most of domestic cities are split in rain and sewage, sewage enters a sewage treatment plant to be treated, and the rainwater is closely discharged into a drainage system or other receiving water bodies, but the initial rainwater of the road contains a large amount of ss (solid suspended matters), hydrocarbon and heavy metal, the concentration of COD (organic pollutants) is higher, the pollution degree is far higher than that of the initial rainwater of the roof, and if the initial rainwater of the roof cannot be effectively treated, certain pollution is caused to urban environment.

At present, the initial rainwater is collected through an initial rainwater discarding device, and the existing initial rainwater discarding device comprises a water inlet pipe, a rainwater treatment cavity, a sewage collecting pipe, an overflow weir and a water draining pipe. The inlet tube intercommunication rainwater treatment chamber, overflow weir setting are separated into sewage treatment room and water purification treatment room with rainwater treatment chamber in the rainwater treatment chamber. The water inlet pipe and the sewage collecting pipe are positioned in the sewage treatment chamber, and the water outlet pipe is positioned in the water purification treatment chamber.

The amount of rainwater entering the initial rainwater discarding device at the initial stage of raining is small, and the initial rainwater flushes sundries on a pavement, so that the pollution degree of the initial rainwater is high, the initial rainwater with high pollution degree flows into the rainwater treatment cavity from the water inlet pipe, is blocked by the overflow weir, and is discharged into a sewage treatment plant through the sewage collecting pipe. The rain amount entering the initial drainage facility at the middle and later periods of rain is large, as most sundries in the road are taken away by the initial rain water, the rain water at the middle and later periods is relatively clean, and the relatively clean rain water at the middle and later periods enters the sewage treatment cavity and then flows over the overflow weir to enter the water purification treatment chamber connected with the drain pipe, and is drained by the drain pipe. At the same time, a large part of late-stage rainwater is discharged into a sewage treatment plant through a sewage collecting pipe. The prior art can collect a large amount of clean middle-late-stage rainwater while collecting the initial-stage rainwater with serious pollution, and increases the water conservancy load of a sewage treatment plant.

Disclosure of Invention

In order to reduce the amount of rainwater entering a sewage treatment plant at the middle and later stages and lighten the water conservancy load of the sewage treatment plant, the application provides an initial drainage facility.

The initial flow discarding facility provided by the application adopts the following technical scheme:

an initial flow discarding facility comprises a rainwater collecting well, a purified water discharge pipeline, a sewage discharge pipeline, a control component and a floating ball;

the rainwater collecting well is arranged below a road, a treatment cavity is formed in the rainwater collecting well, a rainwater collecting opening is formed in the upper cavity wall of the treatment cavity, the rainwater collecting opening is communicated with the road, the water purifying discharge pipeline is communicated with the water discharging system, the water purifying discharge pipeline is communicated with the bottom of the treatment cavity, the sewage discharge pipeline is communicated with a sewage treatment plant, the sewage discharge pipeline is communicated with the bottom of the treatment cavity, the floating ball and the control assembly are both positioned in the treatment cavity, the floating ball is connected with the control assembly, and the control assembly is used for controlling the communication states of the water purifying discharge pipeline, the treatment cavity, the sewage discharge pipeline and the treatment cavity;

the treatment cavity is internally provided with a floating water line, when the floating ball is positioned below the floating water line, the water purifying discharge pipeline is closed and the sewage discharge pipeline is opened, and when the floating ball rises above the floating water line, the water purifying discharge pipeline is opened and the sewage discharge pipeline is closed.

By adopting the technical scheme, when no rainwater exists in the initial drainage facility, the control component controls the water purification discharge pipeline to be closed and the sewage discharge pipeline to be opened. When the floating ball is positioned below the floating water line, the heavy-pollution initial rain enters the treatment cavity from the rainwater collecting port, is converged at the bottom of the treatment cavity, and then enters the sewage treatment plant from the sewage discharge pipeline. When the rainfall is further increased, most of the rainwater entering the initial stage drainage facility is clean middle-stage and later-stage rainwater, the water level in the treatment cavity rises to drive the floating ball to move upwards to exceed the floating water level line, at the moment, under the control of the control component, the sewage discharge pipeline is closed, the water inlet discharge pipeline is opened, and the rainwater is discharged from the water purification discharge pipeline to enter the drainage system. When the water level is high, the sewage discharge pipeline is closed under the control of the control component, so that the sewage discharge pipeline is not drained any more, the amount of rainwater entering the middle and later stages of the sewage treatment plant is reduced, and the water conservancy load of the sewage treatment plant is lightened.

Optionally, the control assembly includes mount pad, valve plate and connecting piece, the mount pad sets up the chamber bottom of processing chamber, set up on the mount pad and communicate the processing chamber with the first through-hole of water purification discharge pipeline, intercommunication the processing chamber with the second through-hole of sewage discharge pipeline, the inside sliding tray of having seted up of mount pad, the sliding tray intercommunication first through-hole with the second through-hole, the valve plate with sliding tray sliding connection, the connecting piece is connected the valve plate with the floater, the connecting piece is used for passing through the floater goes up and down to drive the valve plate slides in the sliding tray, and shutoff first through-hole or the second through-hole.

Through adopting above-mentioned technical scheme, under normal state, the valve plate is located first through-hole in order to shutoff first through-hole, and the second through-hole communicates, and the serious first rain of pollution is discharged into sewage treatment plant through sewage discharge pipeline. When rainwater entering the initial drainage facility increases, and the floating ball moves upwards to exceed the floating water level line, the floating ball drives the connecting piece to rotate, the connecting piece drives the valve plate to be far away from the first through hole and slide into the second through hole, so that the first through hole is communicated, the second through hole is closed, and the rainwater is discharged from the water purification discharge pipeline to the drainage system. When the rainwater amount is reduced and the floating ball descends below the floating water level line, the floating ball drives the connecting piece to rotate, and the connecting piece drives the valve plate to move towards the first through hole, so that the second through hole is communicated again, the initial drainage facility returns to a state that the sewage discharge pipeline is opened and the purified water discharge pipeline is closed. Thereby realizing the automatic opening and closing adjustment of the water level change in the water purification discharge pipeline and the sewage discharge pipeline along with the treatment cavity.

Optionally, the connecting piece includes support frame and connecting rod, support frame fixed connection is in on the mount pad, the support frame with the connecting rod rotates to be connected, the connecting rod rotates in vertical plane, be provided with in the valve plate and rotate the piece, connecting rod one end is connected rotate the piece, rotate the piece and be used for driving when the connecting rod rotates the valve plate slides in order to shutoff first through-hole or second through-hole, connecting rod other end fixed connection the floater.

Through adopting above-mentioned technical scheme, connect floater and valve plate by connecting rod and support piece, realize changing the horizontal migration of valve plate with the reciprocates of floater into, opening or closure, the opening or closure of sewage discharge pipeline of final control water purification discharge pipeline.

Optionally, the rotating member includes a rotating sleeve and a pin rod, a rotating groove is formed downward on one side of the valve plate, which is opposite to the processing cavity, the pin rod is located in the rotating groove and is rotationally connected with the valve plate along a direction parallel to the rotating direction of the connecting rod, the pin rod is fixedly connected with the peripheral wall of the rotating sleeve, and one end of the connecting rod is coaxially and slidably connected with the rotating sleeve.

Through adopting above-mentioned technical scheme, the connecting rod slides in rotating the cover, drives the valve plate through rotating the cover and removes to realize valve plate horizontal slip's effect when driving the connecting rod pivoted through the floater.

Optionally, a rainwater grate is covered at the rainwater collecting opening of the rainwater collecting well.

By adopting the technical scheme, the rainwater grate reduces the probability that the passersby falls into the initial drainage facility.

Optionally, a plurality of support columns fixedly connected with the bottom of the treatment cavity are arranged below the rainwater grate.

By adopting the technical scheme, the support column strengthens the internal strength of the initial drainage arrangement, improves the compression strength of the rainwater grate, and reduces the probability of the compression damage of the rainwater grate.

Optionally, a guide plate is arranged on the side wall of the rainwater grate, one side, close to the rainwater grate, of the guide plate is obliquely arranged from bottom to top in a direction away from the rainwater grate, and the highest position of the guide plate is flush with a road.

Through adopting above-mentioned technical scheme, the guide plate of slope setting for the initial stage is abandoned and is flowed the facility and is lower than the road installation around, and then more gathers the initial stage and abandon the rainwater around the facility, has enlarged the initial stage and has abandoned the scope that flows the setting and collect the rainwater, has accelerated the initial stage and has abandoned the speed that the facility collected around the rainwater.

Optionally, the sieve mesh of rainwater grate is filled with the water seepage material, the rainwater grate below is provided with the filter screen, water seepage material with the filter screen up end butt.

Through adopting above-mentioned technical scheme, infiltration material and filter screen can filter great impurity in the rainwater, have reduced the probability that water purification discharge pipeline and sewage discharge pipeline are stopped up, and debris are filtered by infiltration material and are stayed in the rainwater grate surface, have made things convenient for cleaning personnel to clear up.

Optionally, the treatment cavity includes the subsidence chamber and the water storage chamber of intercommunication each other, the subsidence chamber is located the water storage chamber below, the subsidence chamber volume is less than the water storage chamber volume, the water purification discharge pipeline with sewage discharge pipeline all connects the subsidence chamber bottom.

Through adopting above-mentioned technical scheme, the less chamber that sinks of volume makes the rainwater in the processing chamber more quick gathering to water discharge pipeline and sewage discharge pipeline department to the water level in the chamber that sinks rises fast.

In summary, the present application includes at least one of the following beneficial technical effects:

1. at the initial stage of rainfall, the rainwater entering the initial drainage facility is smaller, when the primary rainwater with serious pollution is mainly used, the sewage discharge pipeline is opened, the purified water discharge pipeline is closed, the primary rainwater with serious pollution is discharged from the sewage discharge pipeline, and the primary rainwater enters a sewage treatment plant for treatment. In the middle and later period of rainfall, when the rainwater is cleaner and the water yield is great, the sewage discharge pipeline is closed, the rainwater is no longer discharged through the sewage discharge pipeline, the water purification discharge pipeline is opened, and the rainwater is discharged into the drainage system from the water purification discharge pipeline. The amount of rainwater entering the sewage treatment plant from the sewage discharge pipeline at the middle and later stages is reduced, so that the water conservancy load of the sewage treatment plant is reduced;

2. the opening and closing states of the water purifying discharge pipeline and the sewage discharge pipeline are controlled through the floating degree of the floating ball in the initial drainage facility, so that when the rainwater amount entering the initial drainage facility is small, the rainwater is discharged by the sewage discharge pipeline, when the rainwater amount entering the initial drainage facility is large, the sewage discharge pipeline is automatically closed, the water purifying discharge pipeline is automatically opened, when the rainwater amount returns to the small state or no rainwater exists in the initial drainage facility, the water purifying discharge pipeline is returned to the state of being opened, and the opening and closing states of the water purifying discharge pipeline and the sewage discharge pipeline are controlled by the water level change in the treatment cavity;

3. when the initial drainage facility collects rainwater, the rainwater grate is sunk below the road, and the flow plates guide water around the initial drainage facility to enter the treatment cavity from the rainwater grate, so that the rainwater collection range and the rainwater collection speed of the initial drainage facility are enlarged.

Drawings

Fig. 1 is a schematic view of the external structure of an embodiment of the present application.

Fig. 2 is a schematic diagram of an internal structure in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a control component in an embodiment of the present application.

Fig. 4 is an enlarged schematic view of the portion a in fig. 2.

Fig. 5 is an enlarged schematic view of portion B of fig. 3.

In the figure: 1. a rainwater collection well; 11. a processing chamber; 111. a water storage chamber; 112. a sinking cavity; 113. a floating water line; 12. a rainwater collection port; 2. a purified water discharge pipe; 3. a sewage discharge pipe; 31. a U-shaped tube section; 4. a control assembly; 41. a mounting base; 411. a sliding groove; 412. a first through hole; 413. a second through hole; 42. a valve plate; 421. a rotating groove; 43. a connecting piece; 431. a support frame; 432. a connecting rod; 44. a rotating member; 441. a rotating sleeve; 442. a pin rod; 5. a floating ball; 6. a rain grate; 61. a sieve pore; 7. a support column; 8. a deflector; 9. a water permeable material; 10. a filter screen; 101. rib plates.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-5.

The embodiment of the application discloses an initial flow discarding facility. Referring to fig. 1 and 2, the initial drainage facility includes a rainwater collecting well 1, a clean water discharge pipe 2, a sewage discharge pipe 3, a control assembly 4, and a float 5.

The rainwater collection well 1 is arranged below a road, a treatment cavity 11 is formed in the rainwater collection well 1, a rainwater collection opening 12 is formed in the upper cavity wall of the treatment cavity 11, and the rainwater collection opening 12 is communicated with the road. The treatment chamber 11 comprises a sinking chamber 112 and a water storage chamber 111 which are communicated with each other, the sinking chamber 112 is positioned below the water storage chamber 111, and the volume of the sinking chamber 112 is smaller than that of the water storage chamber 111. The water purification discharge pipeline 2 is communicated with the water discharge system and the bottom of the sinking cavity 112, and the sewage discharge pipeline 3 is communicated with the sewage treatment plant and the bottom of the sinking cavity 112, so that the water level in the sinking cavity 112 can rise rapidly. A U-shaped pipe section 31 is provided in the sewage discharge pipe 3 to prevent the emission of biogas odor in the sewage discharge pipe 3. The floating ball 5 and the control component 4 are both positioned in the sinking cavity 112, and the floating ball 5 is connected with the control component 4. The control assembly 4 connects the clean water discharge line 2 and the sewage discharge line 3.

A floating water line 113 is provided in the process chamber 11. When the floating ball 5 is positioned below the floating water line 113, the control assembly 4 controls the water purification discharge pipeline 2 to be closed, and the sewage discharge pipeline 3 to be opened and communicated with the sinking cavity 112. When the floating ball 5 rises above the floating water line 113, the control component 4 controls the clean water discharge pipeline 2 to be opened and communicated with the sinking cavity 112, and the sewage discharge pipeline 3 to be closed.

When no rainwater enters the initial drainage facility, the sewage discharge pipeline 3 is opened, and the clean water discharge pipeline 2 is closed. When the amount of rain water is small in the early stage of rain, and the floating ball 5 is positioned below the floating water line 113, the primary rain with serious pollution flows into the sinking cavity 112, and at the moment, the sewage discharge pipeline 3 is opened, and the primary rain is discharged to a sewage treatment plant for treatment through the sewage discharge pipeline 3. The water quantity of the rainwater in the middle and later stages is large and clean, when the floating ball 5 floats upwards to exceed the floating water level line 113, the clean water discharge pipeline 2 is opened, the sewage discharge pipeline 3 is closed, and the rainwater in the middle and later stages is discharged into a drainage system through the clean water discharge pipeline 2. Thereby reducing the amount of rainwater entering the sewage treatment plant in the middle and later stages and lightening the water conservancy load of the sewage treatment plant.

Referring to fig. 1 and 2, a rainwater grate 6 is covered and arranged above a rainwater collecting opening 12 of a rainwater collecting well 1, a plurality of support columns 7 are arranged below the rainwater grate 6, the upper ends of the support columns 7 are in contact with the rainwater grate 6, the lower ends of the support columns 7 are in butt joint with the bottom of a cavity of a treatment cavity 11, the support columns 7 strengthen the strength of the inside of the initial drainage arrangement, the compression strength of the rainwater grate 6 is improved, the probability of the compression damage of the rainwater grate 6 is reduced, and meanwhile, the probability that pedestrians who pass through step on the rainwater grate 6 and fall into the initial drainage facility is also reduced.

The side wall of the rainwater grate 6 is provided with a guide plate 8, one side of the guide plate 8 close to the rainwater grate 6 is obliquely arranged from bottom to top in a direction away from the rainwater grate 6, and the highest position of the guide plate 8 is flush with a road. The initial drainage facility is lower than the surrounding road, so that the initial drainage facility is easier to collect surrounding rainwater, the rainwater collecting range of the initial drainage facility is enlarged, and the surrounding rainwater collecting speed of the initial drainage facility is accelerated.

The mesh holes 61 of the rainwater grate 6 are filled with water seepage materials 9, a filter screen 10 is arranged below the rainwater grate 6, the water seepage materials 9 are abutted with the upper end face of the filter screen 10, and the water seepage materials 9 can be preferably water-permeable asphalt. The water seepage material 9 and the filter screen 10 can filter out larger impurities in the rainwater, and the impurities are filtered by the water seepage material 9 and remain on the surface of the rainwater grate 6, so that cleaning staff can conveniently clean the rainwater grate, and the blockage probability of the water purification discharge pipeline 2 and the sewage discharge pipeline 3 is reduced.

A plurality of rib plates 101 are also arranged in the rainwater grate 6, and two ends of the rib plates 101 are fixedly connected to the side wall of the rainwater grate 6. The rib 101 strengthens the strength of the rain grate 6 so that the probability of the rain grate 6 being damaged is reduced.

Referring to fig. 2 and 3, the control assembly 4 includes a mounting seat 41, a valve plate 42, a connecting member 43, and a rotating member 44.

Wherein, the mounting seat 41 is arranged at the bottom of the treatment cavity 11, and the mounting seat 41 is provided with a first through hole 412 which is communicated with the treatment cavity 11 and the purified water discharge pipeline 2, and a second through hole 413 which is communicated with the treatment cavity 11 and the sewage discharge pipeline 3. The inside of mount pad 41 has offered the sliding tray 411, and the sliding tray 411 communicates first through-hole 412 and second through-hole 413, and valve plate 42 is placed in mount pad 41, and valve plate 42 and sliding tray 411 sliding connection.

Next, referring to fig. 3 and 4, the connecting member 43 includes a support frame 431 and a connecting rod 432, the support frame 431 is fixedly connected to the mounting seat 41, the support frame 431 is rotatably connected to the connecting rod 432, the connecting rod 432 rotates in a vertical plane, the rotating member 44 is disposed in the valve plate 42, and one end of the connecting rod 432 is connected to the rotating member 44.

Finally, referring to fig. 3 and 5, the rotating member 44 includes a rotating sleeve 441 and a pin 442, a rotating groove 421 is formed in a side of the valve plate 42 facing the processing chamber 11 downward, the pin 442 is located in the rotating groove 421 and is rotationally connected with the valve plate 42 along a direction parallel to a rotation direction of the connecting rod 432, the pin 442 is fixedly connected with a circumferential wall of the rotating sleeve 441, and one end of the connecting rod 432 is coaxially and slidably connected with the rotating sleeve 441.

When the rainwater in the middle and later period increases, the water level in the sinking cavity 112 rises to the extent that the floating ball 5 moves upwards to exceed the floating water level line 113, the floating ball 5 drives the connecting rod 432 to rotate anticlockwise around the supporting frame 431 in a vertical plane, the connecting rod 432 drives the rotating sleeve 441 to rotate anticlockwise in the vertical plane in the rotating groove 421, and accordingly the valve plate 42 is driven to move towards the second through hole 413 to seal the second through hole 413, and the rainwater is discharged from the purified water discharge pipeline 2 to a drainage system.

When the rainwater amount is reduced, the floating ball 5 descends below the floating water line 113, the floating ball 5 drives the connecting rod 432 to rotate clockwise in the vertical plane around the supporting frame 431, the connecting rod 432 drives the valve plate 42 to move towards the first through hole 412 through the rotating sleeve 441, the second through hole 413 is communicated, the first through hole 412 is closed, the sewage discharge pipeline 3 is opened, and the purified water discharge pipeline 2 is closed. Thereby realizing the effect of automatically opening, closing and adjusting the purified water discharge pipeline 2 and the sewage discharge pipeline 3 along with the water level change in the sinking cavity 112.

The implementation principle of the initial flow discarding facility in the embodiment of the application is as follows: in a normal state, the sewage discharge pipe 3 is opened and the clean water discharge pipe 2 is closed. At the initial stage of rainfall, when the rainwater entering the initial drainage facility is smaller and the primary rainwater with serious pollution is mainly used, the primary rainwater is concentrated in the sinking cavity 112 and is discharged into a sewage treatment plant from the sewage discharge pipeline 3. In the middle and later period of rainfall, the rainwater is cleaner and the water quantity is larger, the water level in the sinking cavity 112 rises rapidly, and when the floating ball 5 rises along with the water level to exceed the floating water line 113, the connecting rod 432 rotates clockwise or anticlockwise around the supporting frame 431. The connecting rod 432 rotates to drive the valve plate 42 to move towards the sewage discharge pipeline 3, the first through hole 412 is communicated finally, the second through hole 413 is closed, the clean water discharge pipeline 2 is opened, the middle-late rainwater enters the clean water discharge pipeline 2 and finally flows to the drainage system, the effect of diversion of the rainwater entering the initial drainage facility is finally achieved, the quantity of the middle-late rainwater entering the sewage treatment plant is reduced, and the water conservancy load of the sewage treatment plant is lightened.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. An initial flow discarding facility, characterized by: comprises a rainwater collecting well (1), a purified water discharge pipeline (2), a sewage discharge pipeline (3), a control component (4) and a floating ball (5);

the rainwater collecting well (1) is arranged below a road, a treatment cavity (11) is formed in the rainwater collecting well (1), a rainwater collecting opening (12) is formed in the upper cavity wall of the treatment cavity (11), the rainwater collecting opening (12) is communicated with the road, the water purifying and discharging pipeline (2) is used for being communicated with a water discharging system, the water purifying and discharging pipeline (2) is communicated with the cavity bottom of the treatment cavity (11), the sewage discharging pipeline (3) is used for being communicated with a sewage treatment plant, the sewage discharging pipeline (3) is communicated with the cavity bottom of the treatment cavity (11), the floating ball (5) and the control component (4) are both located in the treatment cavity (11), the floating ball (5) is connected with the control component (4), and the control component (4) is used for controlling the communication states of the water purifying and discharging pipeline (2) and the treatment cavity (11), and the sewage discharging pipeline and the treatment cavity (11).

The treatment cavity (11) is internally provided with a floating water line (113), when the floating ball (5) is positioned under the floating water line (113), the water purification discharge pipeline (2) is closed and the sewage discharge pipeline (3) is opened, and when the floating ball (5) rises to exceed the floating water line (113), the water purification discharge pipeline (2) is opened and the sewage discharge pipeline (3) is closed.

2. The primary reject stream facility according to claim 1, wherein: the control assembly (4) comprises a mounting seat (41), a valve plate (42) and a connecting piece (43), wherein the mounting seat (41) is arranged at the bottom of a cavity of the treatment cavity (11), a first through hole (412) which is communicated with the treatment cavity (11) and the purified water discharge pipeline (2) and a second through hole (413) which is communicated with the treatment cavity (11) and the sewage discharge pipeline (3) are formed in the mounting seat (41), a sliding groove (411) is formed in the mounting seat (41), the sliding groove (411) is communicated with the first through hole (412) and the second through hole (413), the valve plate (42) is in sliding connection with the sliding groove (411), the connecting piece (43) is connected with the valve plate (42) and the floating ball (5), and the connecting piece (43) is used for driving the valve plate (42) to slide to block the first through hole (412) or the second through hole (413) according to the lifting of the floating ball (5).

3. The primary reject stream apparatus according to claim 2, wherein: the connecting piece (43) comprises a supporting frame (431) and a connecting rod (432), the supporting frame (431) is fixedly connected to the mounting seat (41), the supporting frame (431) is rotationally connected with the connecting rod (432), the connecting rod (432) rotates in a vertical plane, a rotating piece (44) is arranged in the valve plate (42), one end of the connecting rod (432) is connected with the rotating piece (44), the rotating piece (44) is used for driving the valve plate (42) to slide into the first through hole (412) or the second through hole (413) when the connecting rod (432) rotates, and the other end of the connecting rod (432) is fixedly connected with the floating ball (5).

4. A primary reject arrangement according to claim 3, wherein: the rotating piece (44) comprises a rotating sleeve (441) and a pin rod (442), one side, opposite to the processing cavity (11), of the valve plate (42) is downwards provided with a rotating groove (421), the pin rod (442) is located in the rotating groove (421) and is rotationally connected with the valve plate (42) along a direction parallel to the rotating direction of the connecting rod (432), the pin rod (442) is fixedly connected with the peripheral wall of the rotating sleeve (441), and one end of the connecting rod (432) is coaxially and slidably connected with the rotating sleeve (441).

5. The primary reject stream facility according to claim 1, wherein: the rainwater collecting opening (12) of the rainwater collecting well (1) is covered with a rainwater grate (6).

6. The primary reject stream apparatus according to claim 5, wherein: a plurality of support columns (7) fixedly connected with the bottom of the treatment cavity (11) are arranged below the rainwater grate (6).

7. The primary reject stream apparatus according to claim 5, wherein: the side wall of the rainwater grate (6) is provided with a guide plate (8), one side of the guide plate (8) close to the rainwater grate (6) is obliquely arranged from bottom to top to the direction away from the rainwater grate (6), and the highest position of the guide plate (8) is flush with a road.

8. The primary reject stream apparatus according to claim 5, wherein: the rainwater grate is characterized in that water seepage materials (9) are filled in the sieve holes (61) of the rainwater grate (6), a filter screen (10) is arranged below the rainwater grate (6), and the water seepage materials (9) are abutted to the upper end face of the filter screen (10).

9. The primary reject stream facility according to claim 1, wherein: the treatment cavity (11) comprises a sinking cavity (112) and a water storage cavity (111) which are communicated with each other, the sinking cavity (112) is positioned below the water storage cavity (111), the volume of the sinking cavity (112) is smaller than that of the water storage cavity (111), and the clean water discharge pipeline (2) and the sewage discharge pipeline (3) are both connected with the bottom of the sinking cavity (112).