After-rain wastewater treatment device for sewer

Abstract

The invention relates to the technical field of wastewater treatment, in particular to an after-rain wastewater treatment device for a sewer, which comprises a sewer well lid and a sealing well lid, and further comprises a water passing tank, a water inlet pipe and a water outlet pipe, the sediment water tank is mounted in the shaft and located below the sealing well lid; the precipitation assembly is mounted in the precipitation water tank; the water changing assembly is installed in the water passing water tank and used for temporarily storing rainwater in the water passing water tank and changing the temporarily stored rainwater into the precipitation water tank after precipitation in the precipitation water tank is completed; according to the device, through the arrangement of the precipitation assembly and the water changing assembly, rainwater can be rapidly precipitated to form a separation layer, sludge in wastewater after raining can be treated, and the situation that the sludge is deposited in a sewer, and consequently the sewer is blocked is avoided.

Description

Technical Field

[0001] The present invention relates to the field of wastewater treatment, and particularly to a device for treating rainwater wastewater used in sewers. Background Art

[0002] A rainwater wastewater treatment device is a device specifically used for treating wastewater generated after rain. It removes impurities, pollutants, and harmful substances in the wastewater through means such as collection, filtration, and purification, so that the treated water meets certain water quality standards and can be used for reuse or safe discharge. This helps to reduce the pollution of rainwater to the environment and at the same time realizes the recycling of water resources, which has important environmental protection significance.

[0003] During rainfall, rainwater will wash the ground surface and carry a large amount of sediment, debris, etc. into the drainage system. If the cross-section of the drainage system is too small, the slope is insufficient, etc., it will cause the water flow velocity to slow down, and the sediment cannot be discharged smoothly, resulting in silt accumulation. Silt accumulation will reduce the effective drainage space of the sewer, cause the drainage speed to slow down, and even completely block, leading to problems such as urban waterlogging. Moreover, silt accumulation will increase the maintenance difficulty and cost of the sewer, and regular cleaning and repair are required. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a device for treating rainwater wastewater used in sewers.

[0005] The present invention provides a device for treating rainwater wastewater used in sewers, including a manhole cover and a sealing cover, which are respectively arranged on the top of the shaft of the manhole. The device further includes:

[0006] A water passing tank, installed inside the shaft and located at the bottom of the manhole cover. The opening of the water passing tank is connected to the manhole cover, and all the rainwater entering from the manhole cover enters the water passing tank;

[0007] A sedimentation tank, installed inside the shaft and located below the sealing cover. The sedimentation tank is connected to the water passing tank through a connecting channel;

[0008] A sedimentation component, installed inside the sedimentation tank, for sedimenting the rainwater entering the inside of the sedimentation tank;

[0009] A water changing component, installed inside the water passing tank, for temporarily storing the rainwater inside the water passing tank and changing the temporarily stored rainwater to the inside of the sedimentation tank after sedimentation is completed inside the sedimentation tank;

[0010] When there is rain, the rainwater flows along the manhole cover into the interior of the water passing tank. When the rainwater is in the precipitation process inside the sedimentation tank, the rainwater is temporarily stored in the interior of the water passing tank. After the precipitation in the sedimentation tank is completed, the rainwater inside the water passing tank accumulates to a certain amount and then enters the interior of the sedimentation tank under the action of the water changing component. Subsequently, the water changing component seals the interior of the sedimentation tank, enabling the rainwater to stand still and precipitate inside the sedimentation tank. Thus, through the switching between the water passing tank and the sedimentation tank, when the rainwater is precipitating, it can be in a static state, avoiding the situation where the flowing water fluctuates driven by the incoming rainwater and affecting the precipitation effect. This is conducive to the rapid precipitation of rainwater to form a separation layer. After separation, the supernatant is discharged, and the sludge is collected, thereby realizing the treatment of sludge in the wastewater after rain and helping to avoid the situation where sludge accumulates inside the sewer and causes sewer blockage.

[0011] Preferably, the precipitation component includes:

[0012] A number of inclined plates, vertically arrayed and fixed inside the sedimentation tank;

[0013] A gap, arranged between the bottom of the inclined plate and the reserve of the sedimentation tank, for the precipitated sludge to sink;

[0014] A drainage component, installed inside the sedimentation tank, for discharging the supernatant when the precipitation is completed;

[0015] A sludge discharging component, installed inside the sedimentation tank, for discharging the sludge when the precipitation is completed;

[0016] After the rainwater enters the interior of the sedimentation tank, the sedimentation tank is divided into multiple shallow pool spaces by a number of inclined plates. Thus, when the rainwater precipitates inside the shallow pool spaces, the sludge can quickly precipitate onto the surface of the inclined plates, which is conducive to the rapid precipitation of rainwater. After the sludge precipitates on the surface of the inclined plates, under the action of the inclination of the inclined plates, the precipitated sludge gradually slides down along the inclined surface of the inclined plates towards the gap, and then slides down along the gap to the bottom of the sedimentation tank, which is conducive to the rapid precipitation of the sludge;

[0017] After the precipitation is completed, the drainage component can discharge the supernatant after precipitation from the manhole, and the sludge in the lower layer is collected by the sludge discharging component for unified cleaning after rain.

[0018] Preferably, the water changing component includes:

[0019] A return-shaped plate, fixed to the upper half inside the water passing tank;

[0020] Two first electric telescopic rods, symmetrically fixed on the inner wall of the water passing tank and located below the return-shaped plate;

[0021] The baffle is fixed to the tops of the telescopic ends of the two first electric telescopic rods, and when moving upward to the topmost position, it fits the inner ring edge of the loop-shaped plate to form a seal.

[0022] After the first electric telescopic rod is activated, it can push the baffle to move vertically through the telescopic end. When the baffle moves upward to abut against the bottom of the loop-shaped plate, the baffle and the loop-shaped plate are sealed by a rubber strip. Thus, when rainwater enters the inside of the water passing tank, it is retained in the space above the baffle, which is conducive to preventing rainwater from entering the inside of the sedimentation tank and interfering with the sedimentation inside the sedimentation tank. When the baffle moves downward and disengages from the loop-shaped plate, the rainwater can flow downward along the edge of the baffle until it enters the inside of the sedimentation tank, thereby realizing the replacement of water inside the sedimentation tank.

[0023] Preferably, the water replacement assembly further includes:

[0024] A piston, slidably inserted into the inside of the connecting channel;

[0025] Two sliding rods, symmetrically fixed to both ends of the piston and slidably connected to the inner wall of the water passing tank;

[0026] Two waist-shaped groove plates, respectively fixed to the tops of the two sliding rods;

[0027] Two straight rods, symmetrically fixed to the bottom of the baffle;

[0028] Two sliding contacts, respectively fixed to the bottoms of the two straight rods and respectively slidably connected to the two waist-shaped groove plates;

[0029] When the baffle moves upward, it drives the straight rod to move upward. The straight rod moving upward drives the sliding contact to move upward. While the sliding contact moves upward, it slides inside the waist-shaped groove plate, thereby driving the waist-shaped groove plate to pull the sliding rod to slide along the trajectory of the sliding rod, and thus pulling the piston out of the inside of the connecting channel through the sliding rod, so as to realize the connection between the space below the baffle in the water passing tank and the sedimentation tank. At this time, the baffle and the loop-shaped plate form a seal. Similarly, after the baffle moves downward, it drives the piston to insert into the inside of the connecting channel to form a seal. At this time, rainwater can enter the space below the baffle, thereby forming a cross-flow of rainwater.

[0030] Preferably, the water replacement assembly further includes:

[0031] A flocculant tank, fixed above the sedimentation tank;

[0032] A blanking tank, fixed to the top of the sedimentation tank and having its top communicating with the bottom opening of the flocculant tank;

[0033] A first control valve, fixedly installed inside the bottom opening of the flocculant tank;

[0034] A first opening is provided through a side wall of the lower material box in contact with the connecting channel;

[0035] A feeding roller is rotatably mounted inside the first opening, and drives the flocculant inside the feeding box to be fed out by the rotation;

[0036] When water flows through the inside of the connecting channel, the flow of water drives the feed roller to rotate, and the feed roller drives the flocculant inside the feed box to be discharged through rotation, thereby driving the flocculant to be put into the rainwater. The flocculant can be a liquid flocculant, which is conducive to accelerating the precipitation speed of impurities such as silt in the rainwater, and is conducive to the rapid precipitation of rainwater in heavy rain;

[0037] The interior of the flocculant box is used for storing flocculants. By controlling the first control valve to open, flocculants can be input into the interior of the lower material box, which is beneficial for controlling the input amount of flocculants.

[0038] Preferably, the precipitation component further comprises:

[0039] A plurality of rectangular openings are respectively opened through the upper ends of the inclined plates;

[0040] A plurality of clamping plates, respectively clamped and installed inside each of the rectangular openings;

[0041] A connecting plate is slidably mounted on the side wall of the sedimentation water tank, and one side is fixedly connected to all the clamping plates, and the top is provided with an inclined surface adapted to be pushed by the piston;

[0042] An elastic support rod, fixed to the bottom of the sedimentation water tank, elastically supporting the connecting plate through the top;

[0043] When the piston is pushed into the interior of the connecting channel, the bottom of the piston pushes the inclined surface of the top of the connecting plate downward, thereby pushing the connecting plate to move downward, and the connecting plate drives the clamping plate to move downward, so that the clamping plate is inserted into the interior of the rectangular opening to form a shield. At this time, the clamping plate is flush with the surface of the inclined plate for sedimentation. When the piston moves out of the interior of the connecting channel, the connecting plate is pushed upward under the elastic action of the elastic support rod, thereby driving the clamping plate to move out of the interior of the rectangular opening, so that when rainwater enters the interior of the sedimentation water tank, it can form a flow on the surface of the inclined plate, which is conducive to flushing the silt sediment remaining on the surface of the inclined plate, so that the sediment is washed to the bottom of the sedimentation water tank for sedimentation again, which is conducive to avoiding the situation where the sediment accumulates on the surface of the inclined plate without falling;

[0044] The surface of the inclined plate is coated with a smooth coating, which facilitates the sliding of the settled silt.

[0045] Preferably, the precipitation component further comprises:

[0046] The first storage tank is fixed to the bottom of the sedimentation water tank;

[0047] The second storage tank is fixed to the bottom of the water passing tank;

[0048] Two connecting ports are respectively opened between the bottom of the first storage tank and the sedimentation water tank and between the bottom of the second storage tank and the water passing tank;

[0049] Two shielding members are respectively fixed inside the two connecting ports. The tops of the shielding members are linearly arrayed with a plurality of narrow openings, and the tops of all the narrow openings form wide openings through the formation of inclined openings;

[0050] When rainwater and silt enter the inside of the sedimentation water tank or the water passing tank, the silt will naturally settle downward. When the silt settles, it passes through the inclined opening and the narrow opening and enters the inside of the first storage tank or the second storage tank. When the subsequent water flow enters the inside of the sedimentation water tank or the water passing tank, the water flow impacts on the water surface. Even when the water flow impacts the shielding member, due to the setting of the narrow opening, the connecting space above and below the shielding member is narrow, so that the impact of the rainwater is weakened after being blocked by the shielding member, thereby reducing the impact of the rainwater on the silt deposited inside the first storage tank or the second storage tank and reducing the situation of the silt re-mixing into the rainwater, which is beneficial to improving the filtering efficiency of the silt in the rainwater.

[0051] Preferably, the silt discharging assembly includes:

[0052] A recycling box is fixed to the top of the sedimentation water tank;

[0053] A silt pump is fixed to the top of the sedimentation water tank;

[0054] A first collecting pipe is fixedly connected between the input end of the silt pump and the bottom of the first storage tank;

[0055] A second collecting pipe is fixedly connected between the input end of the silt pump and the bottom of the second storage tank;

[0056] Two second control valves are respectively fixed inside the first collecting pipe and the second collecting pipe;

[0057] A discharge pipe is fixedly connected between the output end of the silt pump and the upper end of the side wall of the recycling box, and the discharge pipe is detachably connected to the recycling box;

[0058] After the sludge pump is started, it drives the sludge to reach the recycling tank from the inside of the first storage tank along the first collection pipe through the discharge pipe, and from the inside of the second storage tank along the second collection pipe through the discharge pipe, so as to realize the recycling of the sludge. The sealed manhole cover can be removed, so that the staff can process the sludge by taking out the recycling tank, thus eliminating the need for the staff to open the sewer for cleaning, and the recycled sludge will not occupy the space inside the sewer to cause blockage.

[0059] Preferably, the drainage assembly includes:

[0060] Two straight cylinders are symmetrically fixed at both ends inside the sedimentation water tank and penetrate through the inclined plate. A straight notch is formed between the opposite sides of the two straight cylinders;

[0061] Two drain pipes are respectively slidably and sealingly installed inside the two straight cylinders, and the bottoms penetrate through the sedimentation water tank;

[0062] Two filter nets are respectively fixedly installed at the tops of the two drain pipes;

[0063] Two third electric telescopic rods are symmetrically installed on the top of the sedimentation water tank, and respectively drive the two drain pipes to move vertically through the telescopic ends;

[0064] After the third electric telescopic rod is started, it drives the drain pipe to move downward. During the downward movement of the drain pipe, the top of the drain pipe is exposed from the straight notch, so that the supernatant enters the drain pipe through the straight notch and the top of the drain pipe and is discharged, thus realizing the discharge of the supernatant. As the drain pipe gradually moves downward, the supernatant is gradually discharged, which helps to avoid the situation that the direct opening of the bottom drain port causes the water flow velocity to be too fast and the sludge to be re-mixed into the water flow. The filter net can play a certain filtering role on the sludge.

[0065] Preferably, it further includes:

[0066] A direct discharge box is fixed on the side wall of the water passing water tank;

[0067] A second opening is penetrated through the top of the side wall of the direct discharge box and penetrates and communicates with the water passing water tank;

[0068] A fourth electric telescopic rod is fixedly installed inside the direct discharge box;

[0069] A sealing plate is fixed at the end of the telescopic end of the fourth electric telescopic rod and is sealingly inserted into the second opening;

[0070] A discharge port is penetrated through the bottom of the side wall of the direct discharge box;

[0071] A water level detector is installed inside the water passing water tank;

[0072] The water level detector can detect the water level inside the water passing tank. When it detects that the rainwater inside the water passing tank overflows, that is, when the rainfall is too large to achieve precipitation of the rainwater, the fourth electric telescopic rod is activated at this time. The fourth electric telescopic rod drives the sealing plate to disengage from the second opening, so that the rainwater is directly discharged along the trajectory of the second opening, the straight drainage box and the drainage outlet, which is beneficial to avoid the situation of a large amount of water accumulation on the road surface caused by untimely drainage.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] 1. Through the setting of the precipitation component and the water changing component, when the rainwater is precipitated, it can be in a static state, avoiding the situation that the water flow fluctuates when the rainwater enters and affects the precipitation effect. This is beneficial to quickly precipitate the rainwater to form a separation layer. After separation, the supernatant is discharged, and the sludge is collected, thereby realizing the treatment of the sludge in the wastewater after the rain, and being beneficial to avoiding the situation that the sludge deposits inside the sewer and causes the sewer to be blocked.

[0075] 2. Through the setting of the feeding roller, the flocculant is driven to be put into the rainwater. The flocculant can adopt a liquid flocculant, which is beneficial to accelerating the precipitation speed of impurities such as sludge in the rainwater and is beneficial to quickly precipitating the rainwater during heavy rain.

[0076] 3. Through the setting of the shielding member, the impact of the rainwater on the precipitated sludge is reduced, and the situation that the sludge is remixed into the rainwater is reduced, which is beneficial to improving the filtration efficiency of the sludge in the rainwater. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 It is a schematic structural diagram of the present invention installed inside the manhole.

[0078] Figure 2 It is a schematic overall structural diagram of the present invention.

[0079] Figure 3 It is a schematic structural diagram of the present invention after overall section Figure 1 .

[0080] Figure 4 It is of the present invention Figure 3 The enlarged structural schematic diagram of part A.

[0081] Figure 5 It is of the present invention Figure 3 The enlarged structural schematic diagram of part B.

[0082] Figure 6 It is of the present invention Figure 3 The enlarged structural schematic diagram of part C.

[0083] Figure 7 Structural schematic diagram after the overall section of the present invention Figure 2 。

[0084] Figure 8 For the present invention Figure 7 Enlarged structural schematic diagram at position D in

[0085] Figure 9 Structural schematic diagram after the overall section of the present invention Figure 3 。

[0086] Figure 10 For the present invention Figure 9 Enlarged structural schematic diagram at position E in

[0087] In the figure: 1, sewer well; 101, sewer well cover; 102, sealed well cover; 103, water passing tank; 104, sedimentation tank; 105, connecting path; 106, wellbore; 2, inclined plate; 201, gap; 3, baffle plate; 301, return plate; 302, first electric telescopic rod; 4, piston; 401, sliding rod; 402, waist groove plate; 403, sliding contact; 404, straight rod; 5, clamping plate; 501, rectangular opening; 502, connecting plate; 503, elastic support rod; 6, flocculant tank; 601, first control valve; 602, blanking tank; 603, blanking roller; 604, first opening; 7, first storage tank; 701, second storage tank; 702, connecting port; 703, shielding member; 704, inclined opening; 705, narrow opening; 8, recycling tank; 801, sludge pump; 802, first collecting pipe; 803, second collecting pipe; 804, discharge pipe; 9, straight cylinder; 901, drain pipe; 902, filter screen; 903, third electric telescopic rod; 10, direct discharge box; 1001, fourth electric telescopic rod; 1002, second opening; 1003, sealing plate; 1004, discharge port; 11, connecting pipe. Detailed implementation manners

[0088] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations.

[0089] As Figures 1 to 10 shown, a rainwater wastewater treatment device for sewers includes a sewer well cover 101 and a sealed well cover 102, which are respectively arranged at the top of the wellbore 106 of the sewer well 1, and further includes:

[0090] A water passing tank 103, which is installed inside the wellbore 106 and is located at the bottom of the sewer well cover 101. The opening of the water passing tank 103 is connected to the sewer well cover 101, and all the rainwater entering from the sewer well cover 101 enters the water passing tank 103;

[0091] The sedimentation water tank 104 is installed inside the wellbore 106 and below the sealed manhole cover 102. The sedimentation water tank 104 is connected to the water passing tank 103 through the connecting channel 105;

[0092] The sedimentation assembly is installed inside the sedimentation water tank 104 and is used for sedimenting the rainwater entering the inside of the sedimentation water tank 104;

[0093] The water changing assembly is installed inside the water passing tank 103 and is used for temporarily storing the rainwater inside the water passing tank 103 and changing the temporarily stored rainwater into the sedimentation water tank 104 after the sedimentation in the sedimentation water tank 104 is completed;

[0094] During rainfall, rainwater will wash the ground surface and bring a large amount of sediment, debris, etc. into the drainage system. If the cross-section of the drainage system is too small, the slope is insufficient, etc., it will cause the water flow velocity to slow down, and the sediment cannot be discharged smoothly, resulting in silt accumulation. Silt accumulation will reduce the effective drainage space of the sewer, leading to a slowdown in the drainage speed, or even complete blockage, causing problems such as urban waterlogging. Moreover, silt accumulation will increase the maintenance difficulty and cost of the sewer, and regular cleaning and repair are required;

[0095] This embodiment of the present invention can solve the above problems. The specific implementation method is as follows. When there is rainwater, the rainwater flows along the manhole cover 101 into the inside of the water passing tank 103. When the rainwater is in the sedimentation process inside the sedimentation water tank 104, the rainwater is temporarily stored inside the water passing tank 103. After the sedimentation in the sedimentation water tank 104 is completed, the rainwater inside the water passing tank 103 accumulates to a certain amount and then enters the sedimentation water tank 104 under the action of the water changing assembly. Subsequently, the water changing assembly seals the inside of the sedimentation water tank 104, so that the rainwater stands still and sediments inside the sedimentation water tank 104. Thus, through the switching between the water passing tank 103 and the sedimentation water tank 104, when the rainwater is sedimenting, it can be in a static state, avoiding the situation that the water flow fluctuation caused by the entry of rainwater affects the sedimentation effect. This is conducive to the rapid sedimentation of rainwater to form a separation layer. After separation, the supernatant is discharged, and the silt is collected, thereby realizing the treatment of silt in the rainwater wastewater after rain, and is conducive to avoiding the situation of silt deposition inside the sewer, causing sewer blockage.

[0096] As an optional embodiment, the sedimentation assembly includes:

[0097] A number of inclined plates 2 are vertically arrayed and fixed inside the sedimentation water tank 104;

[0098] The gap 201 is arranged between the bottom of the inclined plate 2 and the reserve of the sedimentation water tank 104 and is used for the settled silt to sink;

[0099] The drainage assembly is installed inside the sedimentation water tank 104 and is used for discharging the supernatant after sedimentation is completed;

[0100] A silt discharge component, installed inside the sedimentation water tank 104, is used to discharge silt when sedimentation is completed;

[0101] After rainwater enters the inside of the sedimentation water tank 104, the sedimentation water tank 104 is divided into multiple shallow pool spaces by several inclined plates 2. When the rainwater is sedimented inside the shallow pool space, the silt can quickly sediment to the surface of the inclined plate 2, which is conducive to the rapid sedimentation of rainwater. After the silt sediments on the surface of the inclined plate 2, under the inclination of the inclined plate 2, the sedimented silt gradually slides down to the gap 201 along the inclined surface of the inclined plate 2, and then slides down along the gap 201 to the bottom of the sedimentation water tank 104, which is conducive to the rapid sedimentation of silt;

[0102] After sedimentation is completed, the drainage component can discharge the supernatant after sedimentation from the sewer well, and the lower-layer silt is collected by the silt discharge component for unified cleaning after rain.

[0103] As an alternative embodiment, the water changing component includes:

[0104] A return-shaped plate 301, fixed to the upper half inside of the water passing water tank 103;

[0105] Two first electric telescopic rods 302, symmetrically fixed on the inner wall of the water passing water tank 103 and located below the return-shaped plate 301;

[0106] A baffle 3, fixed to the top of the telescopic ends of the two first electric telescopic rods 302, fits the inner circle edge of the return-shaped plate 301 to form a seal when moving up to the topmost position;

[0107] After the first electric telescopic rod 302 is started, it can push the baffle 3 to move vertically through the telescopic end. When the baffle 3 moves up to abut against the bottom of the return-shaped plate 301, the baffle 3 and the return-shaped plate 301 are sealed by a rubber strip. When rainwater enters the inside of the water passing water tank 103, it is retained in the space above the baffle 3, which is conducive to preventing rainwater from entering the inside of the sedimentation water tank 104 and interfering with the sedimentation inside the sedimentation water tank 104. When the baffle 3 moves down and disengages from the return-shaped plate 301, the rainwater can flow down along the edge of the baffle 3 until it enters the inside of the sedimentation water tank 104, thus realizing the water change inside the sedimentation water tank 104.

[0108] As an alternative embodiment, the water changing component further includes:

[0109] A piston 4, slidably inserted into the inside of the connecting channel 105;

[0110] Two sliding rods 401, symmetrically fixed to both ends of the piston 4 and slidably connected to the inner wall of the water passing water tank 103;

[0111] Two waist groove plates 402 are respectively fixed to the tops of the two sliding rods 401;

[0112] Two straight rods 404 are symmetrically fixed to the bottom of the baffle 3;

[0113] Two sliding contacts 403 are respectively fixed to the bottoms of the two straight rods 404 and are respectively slidably connected to the two waist groove plates 402;

[0114] When the baffle 3 moves upward, it drives the straight rod 404 to move upward. The upward movement of the straight rod 404 drives the sliding contact 403 to move upward. While the sliding contact 403 moves upward, it slides inside the waist groove plate 402, thereby driving the waist groove plate 402 to pull the sliding rod 401 to slide along the trajectory of the sliding rod 401, thereby pulling the piston 4 out of the inside of the connecting channel 105 through the sliding rod 401, so as to realize that the space below the baffle 3 where the water passing tank 103 is located communicates with the sedimentation tank 104. At this time, the baffle 3 and the return plate 301 form a seal. Similarly, after the baffle 3 moves downward, it drives the piston 4 to insert into the inside of the connecting channel 105 to form a seal. At this time, rainwater can enter the space below the baffle 3, thereby forming a transposition flow of rainwater.

[0115] As an alternative embodiment, the water changing assembly further includes:

[0116] A flocculant tank 6 is fixed above the sedimentation tank 104;

[0117] A blanking tank 602 is fixed to the top of the sedimentation tank 104, and the top communicates with the bottom opening of the flocculant tank 6;

[0118] A first control valve 601 is fixedly installed inside the bottom opening of the flocculant tank 6;

[0119] A first opening 604 is formed through the side wall of the blanking tank 602 in contact with the connecting channel 105;

[0120] A blanking roller 603 is rotatably installed inside the first opening 604 and drives the flocculant inside the blanking tank 602 to be discharged by rotation;

[0121] When the water flow passes through the inside of the connecting channel 105, the flowing action of the water flow drives the blanking roller 603 to rotate. The blanking roller 603 drives the flocculant inside the blanking tank 602 to be discharged by rotation, thereby driving the flocculant to be put into the rainwater. The flocculant can adopt a liquid flocculant, which is beneficial to accelerating the precipitation speed of impurities such as silt in the rainwater and is beneficial to quickly precipitating the rainwater during heavy rain;

[0122] The inside of the flocculant tank 6 is used for storing the flocculant. By controlling the opening of the first control valve 601, the flocculant can be input into the inside of the blanking tank 602, which is beneficial to controlling the input amount of the flocculant.

[0123] As an alternative embodiment, the precipitation assembly further includes:

[0124] A plurality of rectangular openings 501 are respectively formed through the upper end of the inclined plate 2;

[0125] A plurality of clamping plates 5 are respectively clamped and installed inside each rectangular opening 501;

[0126] A connecting plate 502 is slidably installed on the side wall of the sedimentation water tank 104, and one side is fixedly connected to all the clamping plates 5, and a slope adapted to be pushed by the piston 4 is provided at the top;

[0127] An elastic support rod 503 is fixed to the bottom of the sedimentation water tank 104 and elastically supports the connecting plate 502 through the top;

[0128] When the piston 4 is pushed into the inside of the connecting channel 105, the bottom of the piston 4 pushes the slope at the top of the connecting plate 502 downward, thereby pushing the connecting plate 502 to move downward. The connecting plate 502 drives the clamping plate 5 to move downward, so that the clamping plate 5 is inserted into the inside of the rectangular opening 501 to form a shield. At this time, the clamping plate 5 is flush with the surface of the inclined plate 2 for sedimentation. When the piston 4 moves out of the inside of the connecting channel 105, under the elastic action of the elastic support rod 503, the connecting plate 502 is pushed upward, thereby driving the clamping plate 5 to move out of the inside of the rectangular opening 501, so that when rainwater enters the inside of the sedimentation water tank 104, it can flow on the surface of the inclined plate 2, which is beneficial to flushing the residual silt sediment on the surface of the inclined plate 2, so that the sediment is washed to the lower part of the sedimentation water tank 104 for sedimentation again, which is beneficial to avoiding the situation where the sediment accumulates on the surface of the inclined plate 2 and does not fall;

[0129] The surface of the inclined plate 2 is a smooth coating, which is beneficial to the sliding of the sedimented silt.

[0130] As an alternative embodiment, the precipitation assembly further includes:

[0131] A first storage tank 7 is fixed to the bottom of the sedimentation water tank 104;

[0132] A second storage tank 701 is fixed to the bottom of the water passing tank 103;

[0133] Two connecting ports 702 are respectively formed between the bottom of the first storage tank 7 and the bottom of the sedimentation water tank 104 and between the bottom of the second storage tank 701 and the bottom of the water passing tank 103;

[0134] Two shielding members 703 are respectively fixed inside the two connecting ports 702. A plurality of narrow openings 705 are formed through the top of the shielding member 703 in a linear array, and the top of all the narrow openings 705 forms a wide opening through the formation of an inclined opening 704;

[0135] When rainwater and silt enter the interior of the sedimentation water tank 104 or the water passing tank 103, the silt will naturally settle downward. When the silt settles, it passes through the inclined opening 704 and the narrow opening 705 and enters the interior of the first storage tank 7 or the second storage tank 701. When the subsequent water flow enters the interior of the sedimentation water tank 104 or the water passing tank 103, the water flow impacts on the water surface. Even when the water flow impacts the shielding member 703, due to the setting of the narrow opening 705, the connecting space above and below the shielding member 703 is narrow, so that the impact of the rainwater is weakened after being blocked by the shielding member 703, thereby reducing the impact of the rainwater on the silt deposited in the interior of the first storage tank 7 or the second storage tank 701, and reducing the situation where the silt is remixed into the rainwater, which is beneficial to improving the filtration efficiency of the silt in the rainwater.

[0136] As an optional embodiment, the silt discharge assembly includes:

[0137] A recycling box 8, fixed to the top of the sedimentation water tank 104;

[0138] A silt pump 801, fixed to the top of the sedimentation water tank 104;

[0139] A first collection pipe 802, fixedly connected between the input end of the silt pump 801 and the bottom of the first storage tank 7;

[0140] A second collection pipe 803, fixedly connected between the input end of the silt pump 801 and the bottom of the second storage tank 701;

[0141] Two second control valves, respectively fixed inside the first collection pipe 802 and the second collection pipe 803;

[0142] A discharge pipe 804, fixedly connected between the output end of the silt pump 801 and the upper end of the side wall of the recycling box 8, and the discharge pipe 804 and the recycling box 8 are detachably connected;

[0143] After the silt pump 801 is started, it drives the silt to reach the recycling box 8 from the interior of the first storage tank 7 along the first collection pipe 802 through the discharge pipe 804, and from the interior of the second storage tank 701 along the second collection pipe 803 through the discharge pipe 804, thereby realizing the recycling of the silt. The sealing manhole cover 102 can be removed, so that the staff can process the silt by taking out the recycling box 8, so that it is not necessary for the staff to open the sewer to enter for cleaning, and the recycled silt will not occupy the space inside the sewer to form a blockage;

[0144] A connecting pipe 11 is also connected between the recycling box 8 and the water passing tank 103. When the sludge is conveyed into the interior of the recycling box 8, after a long time of sedimentation, the rainwater mixed in the sludge is separated again due to the sedimentation of the sludge. At this time, by opening the third control valve inside the connecting pipe 11, the rainwater can enter the interior of the water passing tank 103 through the connecting pipe 11, which helps to avoid the situation that a large amount of rainwater accumulates inside the recycling box 8, resulting in no storage space for the sludge.

[0145] As an alternative embodiment, the drainage assembly includes:

[0146] Two straight cylinders 9 are symmetrically and fixedly arranged at both ends inside the sedimentation tank 104 and penetrate through the inclined plate 2. A straight groove is formed between the opposite sides of the two straight cylinders 9;

[0147] Two drain pipes 901 are respectively installed inside the two straight cylinders 9 in a sliding and sealed manner, and their bottoms penetrate through the sedimentation tank 104;

[0148] Two filter meshes 902 are respectively fixedly installed at the tops of the two drain pipes 901;

[0149] Two third electric telescopic rods 903 are symmetrically installed at the top of the sedimentation tank 104, and respectively drive the two drain pipes 901 to move vertically through their telescopic ends;

[0150] After the third electric telescopic rod 903 is activated, it drives the drain pipe 901 to move downward. During the downward movement of the drain pipe 901, the top of the drain pipe 901 is exposed from the straight groove, so that the supernatant enters the drain pipe 901 through the straight groove and the top of the drain pipe 901 and is discharged, thereby realizing the discharge of the supernatant. As the drain pipe 901 gradually moves downward, the supernatant is gradually discharged, which helps to avoid the situation that the water flow rate is too fast when directly opening the drain opening at the bottom, resulting in the sludge being re-mixed into the water flow. The filter mesh 902 can play a certain filtering role on the sludge.

[0151] As an alternative embodiment, it further includes:

[0152] A direct discharge box 10 is fixed on the side wall of the water passing tank 103;

[0153] A second opening 1002 is formed through the top of the side wall of the direct discharge box 10 and penetrates and communicates with the water passing tank 103;

[0154] A fourth electric telescopic rod 1001 is fixedly installed inside the direct discharge box 10;

[0155] A sealing plate 1003 is fixed at the end of the telescopic end of the fourth electric telescopic rod 1001 and is hermetically inserted into the interior of the second opening 1002;

[0156] The discharge port 1004 is opened through the bottom of the side wall of the direct drainage box 10;

[0157] The water level detector is installed inside the water passing tank 103;

[0158] The water level detector can detect the water level inside the water passing tank 103. When it detects that the rainwater inside the water passing tank 103 overflows, that is, when the rainfall is too large to precipitate the rainwater, the fourth electric telescopic rod 1001 is started at this time. The fourth electric telescopic rod 1001 drives the sealing plate 1003 to disengage from the second opening 1002, so that the rainwater is directly discharged along the trajectory of the second opening 1002, the direct drainage box 10, and the discharge port 1004, which is beneficial to avoiding the situation of a large amount of water accumulation on the road surface due to untimely drainage.

[0159] The working principle of the present invention: When there is rainwater, the rainwater flows along the manhole cover 101 into the inside of the water passing tank 103. When the rainwater is in the precipitation process inside the precipitation tank 104, the rainwater is temporarily stored inside the water passing tank 103. After the precipitation in the precipitation tank 104 is completed, when the rainwater inside the water passing tank 103 accumulates to a certain amount, it enters the inside of the precipitation tank 104 under the action of the water changing component. Subsequently, the water changing component seals the inside of the precipitation tank 104, so that the rainwater is statically precipitated inside the precipitation tank 104. Thus, through the switching between the water passing tank 103 and the precipitation tank 104, when the rainwater is precipitated, it can be in a static state, avoiding the situation that the water flow fluctuation caused by the entry of rainwater affects the precipitation effect, which is beneficial to enabling the rainwater to quickly precipitate to form a separation layer. After separation, the supernatant is discharged, and the sludge is collected, so as to realize the treatment of the sludge in the wastewater after rain, which is beneficial to avoiding the situation that the sludge deposits inside the sewer and causes the sewer to be blocked.

[0160] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A post-rainwater wastewater treatment device for a sewer, comprising a manhole cover (101) and a sealing manhole cover (102), which are respectively arranged at the top of a shaft (106) of a sewer (1), characterized in that: Also includes: A water-passing tank (103) is installed inside the shaft (106) and is located at the bottom of the manhole cover (101); the opening of the water-passing tank (103) is connected to the manhole cover (101); and all rainwater entering through the manhole cover (101) enters the water-passing tank (103); A sedimentation water tank (104) is installed inside the wellbore (106) and is located below the sealing well cover (102). The sedimentation water tank (104) is connected to the water transfer tank (103) via a connecting channel (105); A sedimentation component installed inside the sedimentation water tank (104) and used for sedimenting rainwater entering the sedimentation water tank (104); The water exchange component is installed inside the water transfer tank (103) and is used to temporarily store rainwater inside the water transfer tank (103) and exchange the temporarily stored rainwater for water inside the sedimentation tank (104) after the sedimentation inside the sedimentation tank (104) is completed.

2. A post-rainwater treatment device for sewers according to claim 1, characterized in that: The precipitation component comprises: A plurality of inclined plates (2) are fixed in a vertical array inside the sedimentation water tank (104); A gap (201) is provided between the bottom of the inclined plate (2) and the reserve of the sedimentation water tank (104) for allowing the sedimented sludge to sink; A drainage assembly installed inside the sedimentation water tank (104) and used to discharge the supernatant when sedimentation is completed; The sludge removal component is installed inside the sedimentation water tank (104) and is used to discharge the sludge when sedimentation is completed.

3. A post-rainwater treatment device for sewers according to claim 2, characterized in that: The water changing assembly comprises: A circular plate (301) is fixed to the inner upper half of the water transfer tank (103); Two first electric telescopic rods (302) are symmetrically fixed on the inner wall of the water transfer tank (103) and are located below the circular plate (301); The baffle (3) is fixed to the top of the telescopic ends of the two first electric telescopic rods (302), and when it moves upward to the top, it fits against the inner circle edge of the circular plate (301) to form a seal.

4. A post-rainwater treatment device for sewers according to claim 3, characterized in that: The water changing assembly also includes: A piston (4) is slidably inserted into the interior of the connecting channel (105); Two sliding rods (401) are symmetrically fixed to the two ends of the piston (4) and are slidably connected to the inner wall of the water tank (103); Two waist groove plates (402) are respectively fixed on the top of the two sliding rods (401); Two straight rods (404) are symmetrically fixed to the bottom of the baffle (3); The two sliding contacts (403) are respectively fixed to the bottoms of the two straight rods (404) and are respectively slidably connected to the two waist groove plates (402).

5. A post-rainwater treatment device for sewers according to claim 4, characterized in that: The water changing assembly also includes: A flocculant tank (6) is fixed above the sedimentation water tank (104); A feed box (602) is fixed to the top of the sedimentation water tank (104), and the top is connected to the bottom opening of the flocculant tank (6); A first control valve (601) is fixedly installed inside the bottom opening of the flocculant tank (6); A first opening (604) is provided through the side wall of the lower material box (602) and the connecting channel (105) in contact with each other; The unloading roller (603) is rotatably installed inside the first opening (604), and drives the flocculant inside the unloading box (602) to be unloaded through the rotation.

6. A post-rainwater treatment device for sewers according to claim 4, characterized in that: The precipitation component also includes: A plurality of rectangular openings (501) are respectively formed through the upper ends of the inclined plates (2); A plurality of snap-on plates (5) are snap-on mounted inside each of the rectangular openings (501); A connecting plate (502) is slidably mounted on the side wall of the sedimentation water tank (104), and one side of the connecting plate is fixedly connected to all the clamping plates (5), and a top is provided with an inclined surface adapted to push against the piston (4); The elastic support rod (503) is fixed to the bottom of the sedimentation water tank (104) and elastically supports the connecting plate (502) through the top.

7. A post-rainwater treatment device for sewers according to claim 6, characterized in that: The precipitation component also includes: A first storage tank (7) fixed to the bottom of the sedimentation water tank (104); A second storage box (701) is fixed to the bottom of the water transfer tank (103); Two connecting ports (702) are respectively opened between the first storage box (7) and the bottom of the sedimentation water tank (104) and between the second storage box (701) and the bottom of the water transfer tank (103); The two shielding members (703) are respectively fixed inside the two connecting openings (702); the tops of the shielding members (703) are provided with a plurality of narrow openings (705) in a linear array, and the tops of all the narrow openings (705) are formed into wide openings by opening oblique openings (704).

8. A post-rainwater treatment device for sewers according to claim 7, characterized in that: The blood stasis removal component comprises: A recovery tank (8) fixed to the top of the sedimentation water tank (104); A sludge pump (801) is fixed to the top of the sedimentation water tank (104); A first collecting pipe (802) fixedly connected between the input end of the sludge pump (801) and the bottom of the first storage tank (7); A second collecting pipe (803) fixedly connected between the input end of the sludge pump (801) and the bottom of the second storage tank (701); Two second control valves, respectively fixed inside the first collecting pipe (802) and the second collecting pipe (803); The discharge pipe (804) is fixedly connected between the output end of the sludge pump (801) and the upper end of the side wall of the recovery box (8), and the discharge pipe (804) and the recovery box (8) are detachably connected.

9. A post-rainwater treatment device for sewers according to claim 7, characterized in that: The drainage assembly comprises: Two straight cylinders (9) are symmetrically fixed at two ends of the interior of the sedimentation water tank (104) and penetrate the inclined plate (2), and a straight slot is provided between opposite sides of the two straight cylinders (9); Two drainage pipes (901) are respectively installed in a sliding and sealing manner inside the two straight cylinders (9), and the bottoms thereof pass through the sedimentation water tank (104); Two filter screens (902) are respectively fixedly installed on the tops of the two drainage pipes (901); Two third electric telescopic rods (903) are symmetrically installed on the top of the sedimentation water tank (104), and drive the two drainage pipes (901) to move vertically through their telescopic ends.

10. The post-rainwater treatment device for sewers according to claim 1, characterized in that: Also includes: A direct discharge box (10) is fixed on the side wall of the water transfer tank (103); A second opening (1002) is formed through the top of the side wall of the direct discharge box (10) and is connected to the water transfer tank (103); A fourth electric telescopic rod (1001) is fixedly installed inside the straight-discharge box (10); A sealing plate (1003) is fixed to the telescopic end of the fourth electric telescopic rod (1001) and is sealingly plugged into the interior of the second opening (1002); A discharge port (1004) is provided through the bottom of the side wall of the straight discharge box (10); A water level detector is installed inside the water tank (103).

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