Rain and sewage diversion device

Abstract

The utility model provides a rain and sewage diversion device, belongs to the technical field of municipal drainage devices, and effectively solves the problem that sewage treatment burden is increased due to the fact that a large amount of rainwater flows into a sewage discharge pipeline when an existing rain and sewage diversion well is used. According to the technical scheme, the device comprises a mounting plate arranged on the outer side of a sewage draining exit, an opening is formed in the mounting plate, a rotating rod is connected to the upper portion of the mounting plate and arranged in one side of a first connecting plate and one side of a second connecting plate in a sleeved mode, the first connecting plate is connected with a plugging component, and the second connecting plate is connected with a buoy. A first limiting rod and a second limiting rod are fixedly connected to the two sides of the upper portion of the mounting plate correspondingly, and an angle adjusting and fixing part is arranged between the first connecting plate and the second connecting plate. The rainwater and sewage diversion device has the beneficial effects that the rainwater and sewage diversion device can automatically prevent a large amount of rainwater from entering the sewage pipeline under the condition that the water flow of the rainwater and sewage confluence pipe is sharply increased, and the rainwater and the sewage are shunted.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal drainage devices, in particular to a rainwater and sewage diversion device. Background Art

[0002] With the continuous development of urbanization, the scale of cities has gradually increased, and the resident population has increased year by year. The original urban infrastructure construction can no longer meet the normal living needs of urban residents. In recent years, urban drainage has been difficult and the phenomenon of urban flooding has been particularly serious, affecting the healthy development of the city. Therefore, it is urgently necessary to transform the urban drainage system into a rainwater and sewage diversion system.

[0003] At present, the diversion and reconstruction of rainwater and sewage wells usually involves setting up separate sewage drain pipes and rainwater drain pipes, and setting up an overflow wall in front of the rainwater drain outlet. When there is no large amount of rainwater entering the well, the sewage will be blocked by the overflow wall and enter the sewage drain pipe. When a large amount of rainwater enters the well, the water level rises and overflows the overflow wall and is discharged from the rainwater drain pipe. This form of reconstruction can achieve partial diversion of rainwater, but while the rainwater is diverted, a large amount of rainwater still flows out of the sewage drain pipe, causing large fluctuations in the water inlet and water quality of the sewage treatment plant, significantly increasing the operating burden and treatment operating costs of the sewage treatment plant.

[0004] Therefore how to solve the above-mentioned technical problems just becomes the problem that the utility model faces. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a rainwater-sewage diversion device which is easy to install and has strong applicability. It can automatically prevent a large amount of rainwater from entering the sewage pipeline when the water flow in the combined rainwater-sewage pipe increases dramatically during rain, and divert rainwater and sewage, thereby reducing the processing burden on the sewage treatment plant.

[0006] The technical solution adopted by the utility model to solve the technical problem is: the utility model provides a rainwater and sewage diversion device, characterized in that it includes a mounting plate arranged in the rainwater and sewage diversion well and outside the sewage outlet, and an opening having the same size as the sewage outlet is opened at the center of the lower side of the mounting plate;

[0007] The mounting plate is located at the center of the opening and is horizontally rotatably connected to a rotating rod, the outer portion of the rotating rod is respectively sleeved in one side of a first strip-shaped connecting plate and a second connecting plate, the first connecting plate is connected to a blocking component on a side away from the rotating rod, and the second connecting plate is connected to a buoy on a side away from the rotating rod;

[0008] A first limiting rod and a second limiting rod cooperating with the first connecting plate and the second connecting plate are respectively fixedly connected to both sides of the upper part of the mounting plate;

[0009] An angle adjustment fixing component is provided between the first connecting plate and the second connecting plate;

[0010] The blocking component is connected and matched with an expansion component.

[0011] A first through hole with a diameter matching the diameter of the rotating rod is provided on one side of the first connecting plate, a rotating sleeve fixedly connected to the side wall of the first connecting plate is provided on the outer side of the first through hole, the inner diameter of the rotating sleeve is the same as the inner diameter of the first through hole and the central axis coincides with the inner diameter of the first through hole, at least two card slots penetrating to the rear side of the first connecting plate are provided on the inner wall of the rotating sleeve at equal distances along its axial direction, and at least two card strips slidingly engaged with and engaging with the card slots are provided on the outer wall of the rotating rod along its axial direction;

[0012] One side of the second connecting plate is sleeved on the outer side of the rotating sleeve.

[0013] The angle adjustment fixing component includes a plurality of adjustment holes equidistantly provided on the outer wall of the rotating sleeve along the radial direction thereof, the adjustment holes are not connected to the inner side of the rotating sleeve, the second connecting plate is provided with a second through hole which is rotatably matched with the rotating sleeve, the outer wall of the second connecting plate is provided with a penetrating positioning hole along the radial direction of the second through hole and corresponding to the adjusting hole, the outer side of the positioning hole is fixedly connected with a U-shaped frame with an opening facing downward, the top of the U-shaped frame is provided with an insertion hole corresponding to the positioning hole, the insertion hole has the same inner diameter as the positioning hole and the adjusting hole, and a fixing pin is inserted and matched therebetween, the fixing cap of the fixing pin is located on the outer side of the U-shaped frame and its diameter is larger than the inner diameter of the insertion hole;

[0014] The fixing pin is fixedly and coaxially sleeved with a circular baffle close to the outer wall of the second connecting plate, and a spring is sleeved on the portion of the fixing pin located between the baffle and the inner wall of the top of the U-shaped frame.

[0015] A third through hole is formed on the side of the second connecting plate away from the second through hole, a screw having an outer diameter matching the inner diameter of the second through hole is fixedly connected to the lower rear side of the buoy, and a nut is threadedly matched on the side of the screw away from the buoy;

[0016] The outer side of the rotating rod close to the mounting plate is coaxially sleeved with a first limit plate that cooperates with the first connecting plate, and the side of the rotating rod away from the mounting plate is sleeved with a second limit plate that slides with it. The outer end of the rotating rod is provided with an external thread, and the outer end of the rotating rod is threadedly connected to a fixing cap.

[0017] The blocking component comprises a circular bottom plate, the edge of the bottom plate is fixedly connected to a cylindrical first side plate, the top of the first side plate is fixedly connected to a cover plate, and the first connecting plate is fixedly connected to the outer wall of the cover plate;

[0018] The expansion component includes four positioning bars fixedly connected to the top of the bottom plate at equal distances along its radial direction, the inner side of the positioning bar is close to the center of the bottom plate, the outer side of the positioning bar is fixedly connected to the inner side of the first side plate, the inner side of each positioning bar is slidably connected to a telescopic rod running through both sides thereof, the inner side ends of the telescopic rods are fixedly connected to racks, and the two opposite racks are located at different heights from the adjacent racks;

[0019] The center of the bottom plate is rotatably connected with a gear, and the upper and lower sides of the gear are respectively meshed with the four racks, and the top of the gear is coaxially fixedly connected with a knob that penetrates the outside of the cover plate.

[0020] The expansion component also includes a circular expansion plate, a central portion of which is provided with a circular hole having the same diameter as that of the base plate, an edge of the expansion plate is fixedly connected with a cylindrical second side plate, each outer end of the telescopic rod is provided with a threaded hole, and a fixing bolt is threadedly connected between each threaded hole and the second side plate.

[0021] The bottom of the two lower racks and the top of the two upper racks are both provided with guide strips along their sliding directions, and the top of the base plate and the bottom of the cover plate are provided with guide grooves matched with the guide strips.

[0022] The mounting plate is rectangular in shape, and fixing bolts are fixedly connected between the edge of the mounting plate and the inner wall of the rainwater and sewage diversion well.

[0023] When the utility model is actually used: the device is installed on the inner wall of the sewage outlet, according to the specific situation of the current rain and sewage diversion well, the angle between the first connecting plate and the second connecting plate is adjusted by the angle adjustment fixing component, according to the specific situation of the current rain and sewage diversion well, the appropriate float is selected and installed according to the water flow situation, and according to the size of the sewage outlet, it is selected whether to install an expansion component to increase the blocking area, the deadweight of one side of the float is greater than the deadweight of one side of the blocking component, under the action of the first limiting rod, the float and the blocking component are respectively located on both sides of the sewage outlet, which does not affect the normal entry of sewage into the sewage pipe. When a large amount of rainwater pours in on rainy days, the water level in the well rises, and after exceeding the overflow wall, the rainwater is discharged from the rainwater outlet pipe. At the same time, when the water level rises, the float floats up, driving the blocking component to rotate downward, thereby blocking most of the sewage outlet, and the second limiting rod limits the blocking position from shifting, effectively preventing a large amount of rainwater from pouring into the sewage pipe and entering the sewage treatment plant. When the rain stops, the water level slowly drops below the overflow wall, and the remaining rainwater in the well can continue to be gradually discharged from the sewage outlet, and the device returns to its initial position.

[0024] Among them, the adjustment process of the angle adjustment fixing component is to pull the fixing pin outward so that the front end of the fixing pin is disengaged from the adjustment hole. At this time, the second connecting plate can be rotated to change the angle to a suitable angle, and then the fixing pin is released. Under the action of the spring, the fixing pin is reinserted into the current corresponding adjustment hole to fix the angle.

[0025] In addition, when the size of the original blocking component cannot meet the current sewage outlet size requirement, the telescopic rod can be extended by rotating the knob, and then expansion plates of different sizes can be selected as needed. The sizes of the circular holes on expansion plates of different sizes are the same and match the size of the base plate, and then the second side plate is fixedly connected to the first side plate by fixing bolts, thereby increasing the blocking area.

[0026] In addition, buoys of different sizes can be configured and selected according to needs, and the fixed connection between the buoy and the second connecting plate can be completed conveniently and quickly through the cooperation of the nut and the screw.

[0027] The beneficial effects of the utility model are:

[0028] 1. The utility model can change the angle between the buoy and the baffle according to the size of the buoy, so that the device can adapt to the lower flow limit of the water storage volume of different well chambers;

[0029] 2. The utility model can change the size of the float according to different water flow rates, and can be applied to the flow limiting requirements under different water flow conditions;

[0030] 3. The size of the pipeline of the plugging component of the utility model is expanded to meet the needs of different drainage pipe diameters;

[0031] 4. The utility model does not require external power, can be installed and debugged once, and can be used permanently, reducing the amount of maintenance;

[0032] 5. The utility model is safe, reliable, green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is the front view of the utility model;

[0034] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0035] Figure 3 It is a schematic diagram of the partial structure of the utility model from the first angle;

[0036] Figure 4 for Figure 3 A magnified schematic diagram of area A;

[0037] Figure 5 It is a schematic diagram of the partial structure of the utility model from the first angle;

[0038] Figure 6 This is a schematic diagram of the position structure of the blocking component and the expansion component of the utility model;

[0039] Figure 7 for Figure 6 A magnified schematic diagram of area B;

[0040] Figure 8 This is a schematic diagram of the structure of the utility model when there is no large amount of rainwater entering the rainwater and sewage diversion well;

[0041] Fig. 9 It is a schematic diagram of the structure of the utility model when a large amount of rainwater enters the rainwater and sewage diversion well.

[0042] Among them, the figure markings are: 1. rainwater and sewage diversion well; 101. sewage outlet; 102. combined water inlet pipe; 103. rainwater outlet pipe; 104. overflow wall; 2. mounting plate; 201. opening; 202. rotating rod; 203. first limiting rod; 204. second limiting rod; 205. clamping strip; 206. first limiting plate; 207. second limiting plate; 208. external thread; 209. fixing cap; 210. fixing bolt; 3. first connecting plate; 301. first through hole; 302. rotating sleeve; 303. clamping groove; 4. second connecting plate; 401. second through hole; 402. third through hole; 5. blocking component ;501, bottom plate;502, first side plate;503, cover plate;6, float;601, screw;602, nut;7, angle adjustment fixing component;701, adjustment hole;702, positioning hole;703, U-shaped frame;704, jack;705, fixing pin;706, baffle;707, spring;8, expansion component;801, positioning strip;802, telescopic rod;803, rack;804, gear;805 knob;806, expansion plate;807, round hole;808, second side plate;809, threaded hole;810, fixing bolt;811, guide strip;812, guide groove. DETAILED DESCRIPTION

[0043] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0044] See also Figures 1 to 9As shown, the utility model is a rainwater-sewage diversion device, including a mounting plate 2 arranged in a rainwater-sewage diversion well 1 and outside a sewage outlet 101, an opening 201 of the same size as the sewage outlet 101 is opened at the center of the lower side of the mounting plate 2, a rotating rod 202 is horizontally rotated and connected to the center of the mounting plate 2 located above the opening 201, the outer side of the rotating rod 202 is respectively sleeved in one side of a first connecting plate 3 and a second connecting plate 4 in a strip shape, a blocking component 5 is connected to the side of the first connecting plate 3 away from the rotating rod 202, and a buoy 6 is connected to the side of the second connecting plate 4 away from the rotating rod 202, and the first limiting rod 203 and the second limiting rod 204 cooperating with the first connecting plate 3 and the second connecting plate 4 are respectively fixedly connected on both sides of the upper part of the mounting plate 2, an angle adjustment fixing component 7 is arranged between the first connecting plate 3 and the second connecting plate 4, and the blocking component 5 is connected and matched with an expansion component 8. The mounting plate 2 is rectangular, and a fixing bolt 210 is fixedly connected between the edge of the mounting plate 2 and the inner wall of the rainwater-sewage diversion well 1.

[0045] A first through hole 301 with a hole diameter matching the diameter of the rotating rod 202 is provided on one side of the first connecting plate 3, and a rotating sleeve 302 fixedly connected to the side wall of the first connecting plate 3 is provided on the outer side of the first through hole 301. The inner diameter of the rotating sleeve 302 is the same as the inner diameter of the first through hole 301 and the central axis coincides with that of the first through hole 301. The inner wall of the rotating sleeve 302 is provided with at least two slots 303 equidistantly along its axial direction and extending to the rear side of the first connecting plate 3. The outer wall of the rotating rod 202 is provided with at least two clips 205 sliding and snap-fitting with the slots 303 along its axial direction, and one side of the second connecting plate 4 is sleeved on the outer side of the rotating sleeve 302.

[0046] The angle adjustment fixing component 7 includes a plurality of adjustment holes 701 equidistantly provided along the radial direction of the outer wall of the rotating sleeve 302, the adjustment holes 701 are not connected to the inner side of the rotating sleeve 302, the second connecting plate 4 is provided with a second through hole 401 rotatably matched with the rotating sleeve 302, the outer wall of the second connecting plate 4 is provided with a through positioning hole 702 along the radial direction of the second through hole 401 and corresponding to the adjustment hole 701, the outer side of the positioning hole 702 is fixedly connected with a U-shaped frame 703 with an opening facing downward, and the top of the U-shaped frame 703 A plug hole 704 is provided corresponding to the positioning hole 702. The inner diameters of the plug hole 704, the positioning hole 702 and the adjustment hole 701 are the same, and a fixing pin 705 is inserted therebetween. The fixed cap of the fixing pin 705 is located on the outside of the U-shaped frame 703 and its diameter is larger than the inner diameter of the plug hole 704. The fixing pin 705 is fixedly and coaxially sleeved with a circular baffle 706 close to the outer wall of the second connecting plate 4. The part of the fixing pin 705 between the baffle 706 and the inner wall of the top of the U-shaped frame 703 is sleeved with a spring 707.

[0047] A third through hole 402 is provided on the side of the second connecting plate 4 away from the second through hole 401, and a screw 601 whose outer diameter matches the inner diameter of the second through hole 401 is fixedly connected to the lower rear side of the float 6, and a nut 602 is threadedly engaged with the side of the screw away from the float 6. The first limit plate 206 that matches the first connecting plate 3 is coaxially sleeved on the outer side of the rotating rod 202 close to the mounting plate 2, and a second limit plate 207 that slides with the rotating rod 202 is sleeved on the side away from the mounting plate 2, and an external thread 208 is provided on the outer end of the rotating rod 202, and a fixing cap 209 is threadedly connected to the outer end of the rotating rod 202.

[0048] The blocking component 5 includes a circular bottom plate 501, a cylindrical first side plate 502 is fixedly connected to the edge of the bottom plate 501, a cover plate 503 is fixedly connected to the top of the first side plate 502, and the first connecting plate 3 is fixedly connected to the outer wall of the cover plate 503. The expansion component 8 includes four positioning bars 801 fixedly connected to the top of the bottom plate 501 at equal distances along its radial direction, the inner side of the positioning bar 801 is close to the center of the bottom plate 501, and the outer side of the positioning bar 801 is fixed to the inner side of the first side plate 502. The inner side of each positioning bar 801 is slidably connected with a telescopic rod 802 passing through both sides thereof, the inner ends of the telescopic rods 802 are fixedly connected with racks 803, the two opposite racks 803 and the adjacent racks 803 are located at different heights, the central part of the bottom plate 501 is rotatably connected with a gear 804, the upper and lower sides of the gear 804 are respectively meshed with four racks 803, and the top of the gear 804 is coaxially fixedly connected with a knob 805 passing through the outer side of the cover plate 503.

[0049] The expansion component 8 also includes a circular expansion plate 806, a circular hole 807 with the same diameter as the bottom plate 501 is opened at the center of the expansion plate 806, a cylindrical second side plate 808 is fixedly connected to the edge of the expansion plate 806, a threaded hole 809 is opened at the outer end of each telescopic rod 802, and a fixing bolt 810 is threadedly connected between each threaded hole 809 and the second side plate 808. The bottom of the two racks 803 at the bottom and the top of the two racks 803 at the top are both provided with guide bars 811 along their sliding direction, and the top of the bottom plate 501 and the bottom of the cover plate 503 are provided with guide grooves 812 that cooperate with the guide bars 811.

[0050] In actual use: install the device on the inner wall of the sewage outlet 101, adjust the angle between the first connecting plate 3 and the second connecting plate 4 through the angle adjustment fixing component 7 according to the specific situation of the current rain and sewage diversion well 1, select and install the appropriate float 6 according to the water flow, and choose whether to install the expansion component 8 to increase the blocking area according to the size of the sewage outlet 101. The deadweight of one side of the float 6 is greater than the deadweight of one side of the blocking component 5. Under the action of the first limit rod 203, the float 6 and the blocking component 5 are respectively located on both sides of the sewage outlet 101, which does not affect the normal flow of sewage. Entering the sewage pipe, when a large amount of rainwater pours in on rainy days, the water level in the well rises, and after exceeding the overflow wall 104, the rainwater is discharged from the rainwater outlet pipe 103. At the same time, when the water level rises, the float 6 floats up, driving the blocking component 5 to rotate downward, thereby blocking most of the sewage outlet. The second limit rod 204 limits the blocking position from shifting, effectively preventing a large amount of rainwater from pouring into the sewage pipe and entering the sewage treatment plant. When the rain stops, the water level slowly drops below the overflow wall 104, and the remaining rainwater in the well can continue to be gradually discharged from the sewage outlet 101, and the device returns to its initial position.

[0051] Among them, the adjustment process of the angle adjustment fixing component 7 is to pull the fixing pin 705 outward so that the front end of the fixing pin 705 is disengaged from the adjustment hole 701. At this time, the second connecting plate 207 can be rotated to change the angle to a suitable angle, and then the fixing pin 705 is released. Under the action of the spring 707, the fixing pin 705 is reinserted into the currently corresponding adjustment hole 701 to fix the angle.

[0052] In addition, when the size of the original blocking component 5 cannot meet the size requirement of the current sewage outlet 101, the extension component 8 can be used to rotate the knob 805 to extend the telescopic rod 802, and then different sizes of expansion plates 806 can be selected as needed. The sizes of the circular holes 807 on the expansion plates 806 of different sizes are the same and are compatible with the size of the bottom plate 501. Then, the second side plate 808 is fixedly connected to the first side plate 502 by the fixing bolts 810, thereby increasing the blocking area.

[0053] In addition, buoys 6 of different sizes can be configured and selected according to needs. The fixed connection between the buoy 6 and the second connecting plate 4 can be completed conveniently and quickly through the cooperation between the nut 602 and the screw 601.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rainwater and sewage diversion device, characterized in that: It comprises a mounting plate (2) arranged in a rainwater and sewage diversion well (1) and located outside a sewage outlet (101), wherein an opening (201) having the same size as the sewage outlet (101) is provided at the center of the lower side of the mounting plate (2); The mounting plate (2) is located at the center portion above the opening (201) and is horizontally rotatably connected to a rotating rod (202); the exterior of the rotating rod (202) is respectively sleeved inside one side of a first strip-shaped connecting plate (3) and a second connecting plate (4); the first connecting plate (3) is connected to a blocking component (5) on the side away from the rotating rod (202); and the second connecting plate (4) is connected to a buoy (6) on the side away from the rotating rod (202); A first limiting rod (203) and a second limiting rod (204) which cooperate with the first connecting plate (3) and the second connecting plate (4) are respectively fixedly connected to both sides of the upper part of the mounting plate (2); An angle adjustment fixing component (7) is provided between the first connecting plate (3) and the second connecting plate (4); The blocking component (5) is connected and matched with an expansion component (8).

2. The rainwater and sewage diversion device according to claim 1, characterized in that: A first through hole (301) having a hole diameter matching the diameter of the rotating rod (202) is provided on one side of the first connecting plate (3); a rotating sleeve (302) fixedly connected to the side wall of the first connecting plate (3) is provided on the outside of the first through hole (301); the inner diameter of the rotating sleeve (302) is the same as the inner diameter of the first through hole (301) and the central axis coincides with the inner diameter of the first through hole (301); at least two clamping grooves (303) penetrating to the rear side of the first connecting plate (3) are provided on the inner wall of the rotating sleeve (302) at equal intervals along its axial direction; and at least two clamping strips (205) slidingly engaged with and clamped in the clamping grooves (303) are provided on the outer wall of the rotating rod (202) along its axial direction; One side of the second connecting plate (4) is sleeved on the outer side of the rotating sleeve (302).

3. The rainwater and sewage diversion device according to claim 2, characterized in that: The angle adjustment fixing component (7) comprises a plurality of adjustment holes (701) equidistantly provided along the radial direction of the outer wall of the rotating sleeve (302); the adjustment holes (701) do not penetrate the outer wall of the rotating sleeve (302); the second connecting plate (4) is provided with a second through hole (401) rotatably matched with the rotating sleeve (302); the outer wall of the second connecting plate (4) is provided with a penetrating positioning hole (702) along the radial direction of the second through hole (401) and corresponding to the adjustment hole (701); A U-shaped frame (703) with an opening facing downward is fixedly connected to the outer side of the positioning hole (702); a plug hole (704) is provided at the top of the U-shaped frame (703) corresponding to the positioning hole (702); the plug hole (704) has the same inner diameter as the positioning hole (702) and the adjustment hole (701); and a fixing pin (705) is inserted and matched therebetween; a fixing cap of the fixing pin (705) is located on the outer side of the U-shaped frame (703) and has a diameter greater than the inner diameter of the plug hole (704); The fixing pin (705) is fixedly and coaxially sleeved with a circular baffle (706) close to the outer wall of the second connecting plate (4), and a spring (707) is sleeved on the portion of the fixing pin (705) located between the baffle (706) and the top inner wall of the U-shaped frame (703).

4. The rainwater and sewage diversion device according to claim 3, characterized in that: A third through hole (402) is formed on a side of the second connecting plate (4) away from the second through hole (401); a screw (601) having an outer diameter matching the inner diameter of the second through hole (401) is fixedly connected to the lower rear side of the buoy (6); a nut (602) is threadedly matched on a side of the screw away from the buoy (6); The rotating rod (202) is coaxially sleeved with a first limit plate (206) cooperating with the first connecting plate (3) on one side close to the mounting plate (2), and the rotating rod (202) is sleeved with a second limit plate (207) slidably cooperating with the first connecting plate (3) on the other side away from the mounting plate (2). The outer end of the rotating rod (202) is provided with an external thread (208), and the outer end of the rotating rod (202) is threadedly connected with a fixing cap (209).

5. The rainwater and sewage diversion device according to claim 1, characterized in that: The blocking component (5) comprises a circular bottom plate (501), the edge of the bottom plate (501) is fixedly connected to a cylindrical first side plate (502), the top of the first side plate (502) is fixedly connected to a cover plate (503), and the first connecting plate (3) is fixedly connected to the outer wall of the cover plate (503); The expansion component (8) comprises four positioning bars (801) fixedly connected to the top of the bottom plate (501) at equal distances along its radial direction, the inner side of the positioning bar (801) is close to the center of the bottom plate (501), the outer side of the positioning bar (801) is fixedly connected to the inner side of the first side plate (502), the inner side of each positioning bar (801) is slidably connected to a telescopic rod (802) passing through both sides thereof, the inner side end of the telescopic rod (802) is fixedly connected to a rack (803), and the two opposite racks (803) are located at different heights from the adjacent racks (803); The center of the bottom plate (501) is rotatably connected to a gear (804), the upper and lower sides of the gear (804) are respectively meshed with the four racks (803), and the top of the gear (804) is coaxially fixedly connected to a knob (805) that passes through the outside of the cover plate (503).

6. The rainwater and sewage diversion device according to claim 5, characterized in that: The expansion component (8) further comprises a circular expansion plate (806), the central portion of which is provided with a circular hole (807) having the same diameter as that of the base plate (501), the edge of which is fixedly connected with a cylindrical second side plate (808), the outer end of each telescopic rod (802) being provided with a threaded hole (809), and a fixing bolt (810) being threadedly connected between each threaded hole (809) and the second side plate (808).

7. The rainwater and sewage diversion device according to claim 6, characterized in that: The bottom of the two lower racks (803) and the top of the two upper racks (803) are both provided with guide bars (811) along their sliding direction, and the top of the base plate (501) and the bottom of the cover plate (503) are provided with guide grooves (812) that cooperate with the guide bars (811).

8. The rainwater and sewage diversion device according to claim 1, characterized in that: The mounting plate (2) is rectangular in shape, and fixing bolts (210) are fixedly connected between the edge of the mounting plate (2) and the inner wall of the rainwater and sewage diversion well (1).

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