A municipal sewage treatment system with automatic rain and sewage discrimination function

Abstract

The present application relates to sewage treatment technical field, more specifically, it relates to a kind of municipal sewage treatment system with rainwater and sewage automatic discrimination function, including water collecting well and water collector, water collector is provided with several and respectively through inductive pipeline with water collecting well communication, water flow sensor that is cooperated with inductive pipeline is arranged in water collecting well;Water inlet and water outlet are respectively arranged in the upper and lower ends of water collecting well, and first filter device and second filter device that separate water inlet and water outlet are arranged in the middle of water collecting well;First filter device includes the sequentially arranged several drums, and several drums rotate in the same direction, and the adjacent drum is staggered with the insertion rod;Water outlet includes rainwater outlet and sewage outlet, and opening and closing control mechanism that controls rainwater outlet and sewage outlet to open alternatively is arranged in water collecting well.The present application is determined by water flow sensor and multiple water collectors with staggered distribution rainwater and domestic sewage, and the identification rate is significantly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, and more particularly to a municipal sewage treatment system with automatic rainwater and sewage discrimination function. BACKGROUND

[0002] In the traditional municipal combined sewer system, domestic sewage and rainwater share the pipe network, resulting in mixed overflow pollution of rivers during rainy days; while the separate system can separate rainwater and sewage, but there are problems of pipe misconnection and missing connection, leading to sewage entering rivers or rainwater entering sewage treatment plants. In the prior art, rainwater and sewage discrimination mainly relies on manual inspection and discrimination, which is difficult to ensure timeliness and has high labor cost.

[0003] The existing municipal sewage treatment system (such as CN112922114A) can realize rainwater and sewage separation, but relies on manual judgment of water type, has poor timeliness and high labor cost, and cannot automatically switch the processing path according to the water type, resulting in increased load of rainwater entering the sewage treatment plant or direct discharge of sewage polluting the river.

[0004] Therefore, it is necessary to improve the prior art. SUMMARY

[0005] In order to overcome the deficiencies in the prior art, a municipal sewage treatment system with automatic rainwater and sewage discrimination function is provided, which can automatically discriminate rainwater and sewage and treat them.

[0006] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0007] A municipal sewage treatment system with automatic rainwater and sewage discrimination function, comprising a water collecting well and a plurality of water collectors, the water collectors being communicated with the water collecting well through sensing pipes, and a water flow sensor being arranged in the water collecting well and cooperating with the sensing pipes;

[0008] The water collector comprises a water collecting cavity, a water collecting pipe and a floating cover, the water collecting pipe is arranged in the water collecting cavity and communicated with the sensing pipe, an annular groove is arranged between the water collecting pipe and the inner wall of the water collecting cavity, a floating column cooperating with the annular groove is fixedly connected to the lower end of the floating cover, the lower end of the annular groove is communicated with the inner cavity of the water collecting pipe through a water outlet, and a self-cleaning screen is arranged on the water flow passage between the floating cover and the water collecting cavity, for preventing impurities from blocking the sensing pipe;

[0009] The upper and lower ends of the water collecting well are respectively provided with a water inlet and a water outlet, a first filter device and a second filter device are arranged in the middle of the water collecting well to separate the water inlet and the water outlet, and a garbage collection box cooperating with the first filter device and the second filter device is arranged on the side of the water collecting well away from the water inlet; the first filter device comprises a plurality of rollers arranged in sequence, the plurality of rollers rotate in the same direction, and a plurality of insertion rods are arranged alternately on adjacent rollers; the filtering precision of the second filter device is greater than that of the first filter device.

[0010] The water outlet of the water collecting well comprises a rainwater outlet and a sewage outlet, and an opening and closing control mechanism is arranged in the water collecting well, the water flow sensor is electrically connected with a controller, and the controller is electrically connected with the opening and closing control mechanism, wherein the controller controls the opening and closing control mechanism to selectively open the rainwater outlet or the sewage outlet according to the flow signal detected by the water flow sensor.

[0011] Preferably, the outer circumferential surface of the roller is provided with a plurality of plug rod groups in the axial direction, each plug rod group comprises a plurality of plug rods distributed in the circumferential direction, and the plug rod groups of adjacent rollers are arranged alternately; the first roller is located at the lower end of the water inlet, and the upper end of the garbage collection box is provided with a scraping member matched with the plug rod group of the last roller.

[0012] The lower side of the water collecting well is rotatably provided with a hydraulic roller, the blades at the lower side of the hydraulic roller are matched with the water outlet; adjacent rollers are connected through a belt mechanism I, and one of the rollers is connected with the hydraulic roller through a belt mechanism II.

[0013] Preferably, the self-cleaning filter screen comprises a fixed filter screen and a floating filter screen, the fixed filter screen is fixedly connected with the lower end of the floating cover, the floating filter screen is slidingly matched with the fixed filter screen, and the lower end of the floating filter screen is slidingly connected with the inner wall of the water collecting cavity.

[0014] The floating filter screen comprises one or more annular filter screens, adjacent annular filter screens are slidingly matched and provided with anti-disengagement limiters, and when the upper end surface of the floating cover is flush with the upper end surface of the water collecting cavity, the top surface of the annular filter screen is flush with the top surface of the floating cover.

[0015] Preferably, the sewage outlet is communicated with a sewage treatment device through a pipeline, and the sewage treatment device is provided with a dosing mechanism.

[0016] The dosing mechanism comprises a medicine storage box, a medicine distributor and a medicine scraper, the medicine distributor is rotatably arranged in the medicine storage box, the upper end of the medicine distributor is attached to the medicine scraper, and the lower end of the medicine distributor is attached to the bottom wall of the medicine storage box.

[0017] A plurality of medicine outlets are arranged on the bottom wall of the medicine storage box, the medicine distributor is provided with a plurality of medicine distribution cavities corresponding to the positions of the medicine outlets, and when the medicine distribution cavities are aligned with the medicine outlets, the medicine scraper shields the upper end of the medicine distribution cavities.

[0018] The medicine distributor is connected with a rotary drive mechanism.

[0019] Preferably, the medicine distributor comprises an upper medicine distributor and a lower medicine distributor, the side of the upper medicine distributor and the side of the lower medicine distributor that are close to each other are both provided with sleeves, the sleeves of the upper medicine distributor and the lower medicine distributor are slidingly inserted to form the medicine distribution cavities, the lower medicine distributor is rotatably connected with the medicine storage box, and the upper medicine distributor is rotatably connected with the medicine scraper and moves up and down synchronously.

[0020] The scraping device is slidably connected with the medicine storage box and is provided with a height adjusting mechanism.

[0021] Preferably, the second filtering device comprises an obliquely arranged filter screen, and the low end of the filter screen is communicated with the garbage collection box.

[0022] Preferably, the opening and closing control mechanism comprises a control plate and a linear driver, the control plate is slidably arranged on the sidewall of the water collecting well and is provided with a through hole matched with the water outlet, and the linear driver is arranged between the water collecting well and the control plate to control the communication state of the through hole with the rainwater outlet or the sewage outlet.

[0023] Preferably, the garbage collection box comprises a placing frame, a first collection box and a second collection box, the first collection box and the second collection box are fixedly connected, the first collection box is slidably arranged on the placing frame, the upper side of the first collection box is provided with a garbage compaction mechanism, and the sidewall of the second collection box is provided with a water filtering groove.

[0024] The sidewall of the water collecting well is provided with a curved guide rail, two guide wheel sets matched with the curved guide rail are arranged on the two sides of the placing frame, and a lower limiting structure is arranged between the placing frame and the sidewall of the water collecting well.

[0025] Preferably, a plug sleeve is fixedly arranged in the middle of the medicine storage box, and a desiccant box is inserted in the plug sleeve.

[0026] Compared with the prior art, the present application has the following beneficial effects:

[0027] 1. The present application can automatically distinguish rainwater and domestic sewage through the water flow sensor and multiple water collectors distributed in a staggered manner, and can significantly improve the identification rate and accuracy. When the water collector is filled with water, the floating cover rises to increase the flow rate. After the water is turned off, the water in the annular groove is automatically discharged, the floating cover is lowered to drive the floating filter screen to scrape off the impurities on the sidewall of the fixed filter screen, and the filter screen is self-cleaned without external power, thereby solving the problem of blockage.

[0028] 2. The present application can clean the floating garbage in the water flow through multiple rollers with insertion rods, so as to avoid the accumulation of floating garbage on the filter screen to cause the failure of the filtering function. The energy of the outlet water flow is used to drive the roller to rotate, and the garbage is transferred to the garbage collection box, so as to reduce the external energy consumption.

[0029] 3. In the medicine adding mechanism of the present application, the single medicine adding amount of the medicine cavity can be adjusted, and it is suitable for different medicines. The garbage collection box is slidably installed through the curved guide rail and the guide wheel set, so as to be easily pulled out for replacement. The first collection box is provided with a compaction mechanism, which can compress the volume of the floating object and reduce the replacement period. BRIEF DESCRIPTION OF DRAWINGS

[0030] The specific embodiments of the present application will be further described in detail below with reference to the drawings.

[0031] Figure 1This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the water collector structure;

[0033] Figure 3 This is a schematic diagram of the internal structure of the water collector;

[0034] Figure 4 for Figure 3 A magnified view of part A in the image;

[0035] Figure 5 Schematic diagrams of belt mechanism I and belt mechanism II;

[0036] Figure 6 This is a schematic diagram of the internal structure of a water collection well;

[0037] Figure 7 This is a schematic diagram of the structure of a garbage collection bin;

[0038] Figure 8 This is a schematic diagram of the opening and closing control mechanism.

[0039] Figure 9 This is a schematic diagram of the first filtration device.

[0040] Figure 10 This is a schematic diagram of the drug dispensing mechanism.

[0041] Figure 11 This is a schematic diagram of the internal structure of the drug dispensing mechanism;

[0042] Figure 12 for Figure 11 A magnified view of part B in the image.

[0043] In the diagram: 1-Water collection well; 11-Water inlet; 12-Water outlet; 13-Hydraulic roller; 2-Water collector; 21-Sensing pipe; 22-Water flow sensor; 23-Water collection chamber; 24-Water collection pipe; 25-Floating cover; 26-Annular groove; 27-Floating column; 3-Self-cleaning filter screen; 31-Fixed filter screen; 32-Floating filter screen; 33-Anti-detachment limit; 4-First filtration device; 41-Roller; 42-Insertion rod; 43-Belt mechanism I; 44-Belt mechanism II; 45-Power motor; 5-Second filtration device; 6-Gas 61-Scrap collection bin; 62-Placement frame; 63-First collection bin; 64-Second collection bin; 65-Scrap compaction mechanism; 66-Water filter tank; 67-Bent guide rail; 68-Guide wheel assembly; 7-Opening and closing control mechanism; 71-Control panel; 72-Linear actuator; 73-Through hole; 8-Dosing mechanism; 81-Dosage storage box; 82-Dosage dispenser; 83-Scraper; 84-Dosage outlet; 85-Dosage dispensing chamber; 86-Sleeve; 87-Insertion sleeve; 88-Desiccant box; 9-Rotary drive mechanism; 91-Screw and nut structure. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application. EMBODIMENT

[0045] As Figures 1 to 3 shown, a municipal sewage treatment system with automatic rain and sewage discrimination function comprises a water collecting well 1 and a water collector 2. The water collecting well 1 is used for collecting domestic sewage and rainwater. The rainwater is filtered and discharged into a river. The domestic sewage is filtered and discharged into a sewage treatment plant or a sewage treatment device. The water collector 2 is used for discriminating whether the water flow flowing into the water collecting well 1 is sewage or rainwater.

[0046] Specifically, the water collector 2 is provided with a plurality of sensing pipes 21 and is in communication with the water collecting well 1. Preferably, the water collector 2 is distributed in a range of 100 m to 200 m around the water collecting well 1 (with the water collecting well 1 as the center), which can cover the “branch pipe-main pipe” water inlet area of the municipal pipe network, so as to ensure the collection of water inlet signals of multiple points at the same time and avoid the misjudgment of rain and sewage discrimination caused by the failure of a single water collector 2. The water collecting well 1 is provided with a water flow sensor 22 corresponding to each sensing pipe 21. The multiple water flow sensors 22 are concentrated in the same water collecting well 1, which can facilitate debugging and management.

[0047] The specific discrimination logic is as follows: The size of the discrimination time period (for example, three minutes) is set. In the time period, when the water flow sensor 22 senses no water inlet of the water collector 2 or a small number of water inlets of the water collectors 2 (less than 1 / 2 of the total number), it is determined that the water inlet in the time period is domestic sewage water inlet. When a large number of water collectors 2 (more than 1 / 2 of the total number) effectively inlet water, it is determined that the area is raining in the time period, and the water inlet is rainwater.

[0048] In this paper, effective water inlet refers to that, in the discrimination time period, the water flow in any 30 s interval is greater than 5 L / min.

[0049] As Figure 3 , Figure 4As shown, the water collector 2 comprises a water collecting cavity 23, a water collecting pipe 24 and a floating cover 25, the water collecting pipe 24 is arranged in the water collecting cavity 23 and communicates with the induction pipeline 21, an annular groove 26 is arranged between the water collecting pipe 24 and the inner wall of the water collecting cavity 23, and the lower end of the floating cover 25 is fixedly connected with a floating column 27 matched with the annular groove 26. The gap between the floating cover 25 and the water collecting cavity 23 forms a water flow channel, when water continuously enters the water collecting cavity 23 through the water flow channel, the annular groove 26 is first filled, the floating column 27 is driven by the buoyancy to make the floating cover 25 rise, so that the water inflow of the water flow channel is increased, and the water enters the water collecting well 1 through the water collecting pipe 24 and the induction pipeline 21.

[0050] In order to prevent floating objects or impurities from entering the water collecting cavity 23, a self-cleaning filter screen 3 is arranged on the water flow channel between the floating cover 25 and the water collecting cavity 23, which is used to avoid the induction pipeline 21 being blocked by impurities and ensure the accuracy of the detection signal of the water flow sensor 22. Preferably, the self-cleaning filter screen 3 comprises a fixed filter screen 31 and a floating filter screen 32, the fixed filter screen 31 is fixedly connected with the lower end of the floating cover 25, the floating filter screen 32 is slidingly matched with the fixed filter screen 31, and the lower end of the floating filter screen 32 is slidingly connected with the inner wall of the water collecting cavity 23. The anti-disengagement limit 33 is arranged between the floating filter screen 32 and the fixed filter screen 31, and the anti-disengagement limit 33 is arranged between the floating filter screen 32 and the inner wall of the water collecting cavity 23.

[0051] The floating filter screen 32 can adopt one or more annular filter screens, when multiple annular filter screens are adopted, the adjacent annular filter screens are slidingly matched and provided with the anti-disengagement limit 33. When the floating cover 25 rises under the action of the buoyancy, the water flow is filtered through the fixed filter screen 31 and the floating filter screen 32.

[0052] Preferably, the lower end of the annular groove 26 communicates with the inner cavity of the water collecting pipe 24 through a micro drain port, when the water flow channel stops inflowing, the water in the annular groove 26 is drained into the water collecting pipe 24 through the micro drain port, the floating cover 25 automatically descends (or is forced to descend) under the action of gravity and drives the fixed filter screen 31 and the floating filter screen 32 to descend, and the upper end surface of the floating filter screen 32 scrapes the side wall of the fixed filter screen 31.

[0053] Preferably, when the upper end surface of the floating cover 25 is flush with the upper end surface of the water collecting cavity 23, the top surface of the annular filter screen is flush with the top surface of the floating cover 25, so that the top surface of the annular filter screen neither affects the traffic nor easily accumulates garbage.

[0054] As Figure 1 , Figures 5 to 7As shown, the water collecting well 1 is provided with a water inlet 11 and a water outlet 12 at the upper and lower ends respectively, the water inlet 11 is used for flowing in rainwater or domestic sewage, the water collecting well 1 is provided with a first filter device 4 and a second filter device 5 in the middle part for separating the water inlet 11 and the water outlet 12, the filtering precision of the second filter device 5 is greater than that of the first filter device 4, and the water collecting well 1 is provided with a garbage collection box 6 on the side away from the water inlet 11 and matched with the first filter device 4 and the second filter device 5. The water flows out through the water outlet 12 after being treated by the first filter device 4 and the second filter device 5, and the floating garbage and the particulate garbage carried in the water flow enter the garbage collection box 6 after being filtered by the first filter device 4 and the second filter device 5.

[0055] Preferably, the first filter device 4 comprises a plurality of rollers 41 arranged in sequence, a plurality of plug rod groups are arranged on the outer circumferential surface of the roller 41 in the axial direction, each plug rod group comprises a plurality of plug rods 42 uniformly distributed in the circumferential direction, the plug rod groups of adjacent rollers 41 are arranged alternately, the first roller 41 is located at the lower end of the water inlet 11, and the upper end of the garbage collection box 6 is provided with a dirt scraping piece 61 matched with the plug rod group of the last roller 41. When the floating garbage is collected by the first roller 41, it is sequentially transferred to the garbage collection box 6 through a plurality of rollers 41 to realize collection.

[0056] In order to drive a plurality of rollers 41 to rotate in the same direction, a water power roller 13 is rotatably arranged on the lower side of the water collecting well 1, the blades on the lower side of the water power roller 13 are matched with the water outlet 12, adjacent rollers 41 are connected through a belt mechanism I 43, and one of the rollers 41 is connected with the water power roller 13 through a belt mechanism II 44. When the water flows out through the water outlet 12, the water power roller 13 is driven to rotate, and then the roller 41 is driven to rotate.

[0057] Preferably, in order to prevent the floating garbage (such as plastic bags, branches, etc.) in the water flow from being too large to cause the roller 41 to be stuck, a power motor 45 can be connected to the water power roller 13 through an electromagnetic clutch as a backup power. A liquid level meter is arranged in the water collecting well 1, when the liquid level height of the water collecting well 1 is greater than the designed maximum water level for 30 seconds, it indicates that the rotating motion of the water power roller 13 is affected by the roller 41 being stuck, at this time, the power motor 45 is involved (the involvement of the power motor 45 is controlled through the electromagnetic clutch), the water power roller 13 is driven, and the power of the roller 41 is increased, to ensure the collection effect of the floating garbage. When the water level falls to the normal water level and stabilizes for 10 seconds, the electromagnetic clutch is automatically disconnected, the power motor 45 stops working, and the water power driving mode is restored. The power supply lines of the electromagnetic clutch and the power motor 45 are protected by waterproof sleeves to avoid short circuit with sewage.

[0058] As shown in the figure, Figure 5 , Figure 7 , Figure 8As shown, the water outlet 12 includes a rainwater outlet and a sewage outlet, rainwater is discharged through the rainwater outlet, domestic sewage is discharged through the sewage outlet, and the water collecting well 1 is provided with an opening and closing control mechanism 7 for controlling the opening of the rainwater outlet and the sewage outlet. Preferably, the opening and closing control mechanism 7 includes a control plate 71 and a linear actuator 72, the control plate 71 is slidingly arranged on the side wall of the water collecting well 1 and is provided with a through hole 73 matched with the water outlet 12, and the linear actuator 72 is arranged between the water collecting well 1 and the control plate 71. The communication state of the through hole 73 with the rainwater outlet or the sewage outlet is controlled by the linear actuator 72. Preferably, the linear actuator 72 is a waterproof linear motor.

[0059] Preferably, the water flow sensor 22 is electrically connected with a controller, the controller is electrically connected with the opening and closing control mechanism 7, and the controller determines whether the inflow is rainwater or domestic sewage according to the flow data collected by the water flow sensor 22 and the amount of water inflow into the water collector 2. By default, the through hole 73 of the control plate 71 is communicated with the sewage outlet (to ensure that all domestic sewage enters the sewage treatment equipment); when the controller determines that the inflow is rainwater, the through hole 73 is switched to be communicated with the rainwater outlet after a delay of a period of time (for example, 15 minutes) through the linear actuator 72. The technical purpose of the 15-minute delay design is to: the rainwater at the initial stage of rainfall carries road mud and oil stains, and the water quality is poor (COD is usually > 80 mg / L), which needs to be treated by the sewage treatment equipment through the sewage outlet first; after 15 minutes of rainfall, the rainwater has fully washed the road, and the water quality meets the "river discharge standard" (COD≤50 mg / L) in the "Discharge Standard of Pollutants in Municipal Wastewater Treatment Plant" (GB 18918-2002), and then switched to direct discharge through the rainwater outlet, taking into account pollution control and rainwater discharge efficiency.

[0060] As shown in Figure 1 , Figures 10 to 12 The sewage outlet is communicated with the sewage treatment equipment through a pipeline, and the sewage treatment equipment is provided with a dosing mechanism 8. Preferably, the dosing mechanism 8 includes a storage box 81, a medicine distributor 82 and a medicine scraper 83, the medicine distributor 82 is rotationally arranged in the storage box 81, the upper end of the medicine distributor 82 is attached to the medicine scraper 83, the lower end of the medicine distributor 82 is attached to the bottom wall of the storage box 81, and the medicine scraper 83 has a spoke structure.

[0061] A plurality of medicine outlets 84 are arranged on the bottom wall of the storage box 81, and a plurality of medicine distribution cavities 85 are arranged on the medicine distributor 82 corresponding to the positions of the medicine outlets 84. The medicine distributor 82 is connected with a rotary drive mechanism 9, which can be driven by a motor. When the rotary drive mechanism 9 drives the medicine distributor 82 to rotate, the lower end of the medicine distribution cavity 85 is intermittently communicated with the medicine outlet 84 (at the same time, the upper end of the medicine distribution cavity 85 is intermittently blocked by the medicine scraper 83).

[0062] When the medicine distribution cavity 85 is misaligned with the lower medicine outlet 84, the upper end of the medicine distribution cavity 85 is not blocked by the medicine scraping device 83, and the medicine in the medicine storage box 81 enters the medicine distribution cavity 85; when the medicine distribution cavity 85 is in communication with the lower medicine outlet 84, the upper end of the medicine distribution cavity 85 is blocked by the medicine scraping device 83, and the medicine in the medicine storage box 81 stops entering the medicine distribution cavity 85, and the medicine in the medicine distribution cavity 85 is discharged into the water flow through the lower medicine outlet 84.

[0063] In order to conveniently adjust the single dose of the medicine distribution cavity 85, the medicine distributor 82 comprises an upper medicine distributor and a lower medicine distributor, and the side of the upper medicine distributor and the lower medicine distributor close to each other is provided with a sleeve 86, the sleeves 86 of the upper medicine distributor and the lower medicine distributor are slidingly inserted to form the medicine distribution cavity 85, the lower medicine distributor is rotationally connected with the medicine storage box 81, the upper medicine distributor is rotationally connected with the medicine scraping device 83 and moves up and down synchronously, and the medicine scraping device 83 is slidingly connected with the medicine storage box 81 and is provided with a height adjusting mechanism. Preferably, the height adjusting mechanism can adopt a screw nut structure 91, the height of the medicine scraping device 83 is adjusted by pulling the screw to move up and down, and the screw is locked by the nut.

[0064] A desiccant box 88 is inserted in the insert sleeve 87 in the middle of the medicine storage box 81, for keeping the medicine in the medicine storage box 81 dry.

[0065] Preferably, the second filtering device 5 comprises an obliquely arranged filter screen, and the low end of the filter screen is in communication with the garbage collection box 6.

[0066] As shown in Figure 9 The garbage collection box 6 comprises a placing frame 62, a first collection box 63 and a second collection box 64, the first collection box 63 and the second collection box 64 are fixedly connected, the first collection box 63 is used for collecting the floating objects filtered by the first filtering device 4, the second collection box 64 is used for collecting the particulate matter filtered by the second filtering device 5, and the sidewall of the second collection box 64 is provided with a water filtering groove 66.

[0067] The first collection box 63 is slidingly arranged on the placing frame 62, and the upper side of the first collection box 63 is provided with a garbage compaction mechanism 65, which can adopt a hydraulic driven pressing plate.

[0068] In order to facilitate the installation and replacement of the garbage collection box 6, the sidewall of the water collecting well 1 is provided with a curved guide rail 67, the two sides of the placing frame 62 are provided with two guide wheel sets 68 matched with the curved guide rail 67, and a lower limiting structure is arranged between the placing frame 62 and the sidewall of the water collecting well 1. When it is necessary to replace the garbage collection box 6, the garbage collection box 6 can be pulled out along the curved guide rail 67 by means of a rope or the like.

[0069] The preferred embodiments of the present application have been described in detail above, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application, and all such changes are intended to be included within the scope of the present application.

Claims

1. A municipal wastewater treatment system with automatic rainwater and wastewater separation function, characterized in that: It includes a water collection well (1) and several water collectors (2). The water collectors (2) are connected to the water collection well (1) through a sensing pipe (21). A water flow sensor (22) that cooperates with the sensing pipe (21) is installed in the water collection well (1). The water collector (2) includes a water collecting chamber (23), a water collecting pipe (24), and a floating cover (25). The water collecting pipe (24) is located inside the water collecting chamber (23) and is connected to the sensing pipe (21). An annular groove (26) is provided between the water collecting pipe (24) and the inner wall of the water collecting chamber (23). A floating column (27) that cooperates with the annular groove (26) is fixedly connected to the lower end of the floating cover (25). The lower end of the annular groove (26) is connected to the inner cavity of the water collecting pipe (24) through a drain outlet. A self-cleaning filter (3) is provided on the water flow channel between the floating cover (25) and the water collection chamber (23) to prevent impurities from clogging the sensing pipe (21); the self-cleaning filter (3) includes a fixed filter (31) and a floating filter (32). The fixed filter (31) is fixedly connected to the lower end of the floating cover (25), and the floating filter (32) is slidably engaged with the fixed filter (31). The lower end of the floating filter (32) is slidably connected to the inner wall of the water collection chamber (23); The floating filter (32) includes one or more annular filters, with adjacent annular filters slidingly fitted and provided with anti-detachment limiters (33); when the upper surface of the floating cover (25) is flush with the upper surface of the water collection chamber (23), the top surface of the annular filter is flush with the top surface of the floating cover (25); The water collection well (1) is provided with an inlet (11) and an outlet (12) at its upper and lower ends, respectively. A first filter device (4) and a second filter device (5) are provided in the middle of the water collection well (1) to separate the inlet (11) and the outlet (12). A garbage collection bin (6) is provided on the side of the water collection well (1) away from the inlet (11) to cooperate with the first filter device (4) and the second filter device (5). The first filter device (4) includes a number of rollers (41) arranged in sequence. The rollers (41) rotate in the same direction. Insert rods (42) are staggered on adjacent rollers (41). The filtration accuracy of the second filter device (5) is greater than that of the first filter device (4). The outlet (12) of the water collection well (1) includes a rainwater outlet and a sewage outlet. The water collection well (1) is equipped with an opening and closing control mechanism (7). The water flow sensor (22) is electrically connected to a controller. The controller is electrically connected to the opening and closing control mechanism (7). The controller controls the opening and closing control mechanism (7) to open either the rainwater outlet or the sewage outlet according to the flow signal detected by the water flow sensor (22).

2. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 1, characterized in that: The outer surface of the roller (41) is provided with a number of rod groups along the axial direction. Each rod group includes a number of rods (42) evenly distributed along the circumference. The rod groups of adjacent rollers (41) are staggered. The first roller (41) is located at the lower end of the water inlet (11). The upper end of the garbage collection box (6) is provided with a scraper (61) that cooperates with the rod group of the last roller (41). A hydraulic roller (13) is rotatably mounted on the lower side of the water collection well (1), and the blades on the lower side of the hydraulic roller (13) cooperate with the water outlet (12); adjacent rollers (41) are connected by belt mechanism I (43), and one of the rollers (41) is connected to the hydraulic roller (13) by belt mechanism II (44).

3. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 1, characterized in that: The wastewater outlet is connected to the wastewater treatment equipment via a pipeline, and the wastewater treatment equipment is equipped with a dosing mechanism (8). The dosing mechanism (8) includes a medicine storage box (81), a medicine dispenser (82) and a medicine scraper (83). The medicine dispenser (82) is rotatably disposed inside the medicine storage box (81). The upper end of the medicine dispenser (82) is in contact with the medicine scraper (83), and the lower end of the medicine dispenser (82) is in contact with the bottom wall of the medicine storage box (81). The bottom wall of the medicine storage box (81) is provided with several medicine inlets (84), and the medicine dispenser (82) is provided with several medicine dispensing chambers (85) corresponding to the positions of the medicine inlets (84). When the medicine dispensing chambers (85) are aligned with the medicine inlets (84), the medicine scraper (83) blocks the upper end of the medicine dispensing chambers (85). The dispensing device (82) is connected to a rotary drive mechanism (9).

4. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 3, characterized in that: The medicine dispenser (82) includes an upper medicine dispenser and a lower medicine dispenser. A sleeve (86) is provided on the side of the upper medicine dispenser and the lower medicine dispenser that are close to each other. The sleeves (86) of the upper medicine dispenser and the lower medicine dispenser are slidably inserted to form a medicine dispensing cavity (85). The lower medicine dispenser is rotatably connected to the medicine storage box (81), and the upper medicine dispenser is rotatably connected to the medicine scraper (83) and moves up and down synchronously. The scraper (83) is slidably connected to the medicine storage box (81) and is equipped with a height adjustment mechanism.

5. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 1, characterized in that: The second filtration device (5) includes an inclined filter screen, the lower end of which is connected to the garbage collection bin (6).

6. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 1, characterized in that: The opening and closing control mechanism (7) includes a control plate (71) and a linear actuator (72). The control plate (71) is slidably disposed on the side wall of the water collection well (1) and is provided with a through hole (73) that cooperates with the water outlet (12). The linear actuator (72) is disposed between the water collection well (1) and the control plate (71). The linear actuator (72) controls the connection state between the through hole (73) and the rainwater outlet or sewage outlet.

7. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 1, characterized in that: The garbage collection bin (6) includes a mounting frame (62), a first collection bin (63) and a second collection bin (64). The first collection bin (63) and the second collection bin (64) are fixedly connected. The first collection bin (63) is slidably mounted on the mounting frame (62). A garbage compaction mechanism (65) is provided on the upper side of the first collection bin (63). A water filter tank (66) is provided on the side wall of the second collection bin (64). The side wall of the water collection well (1) is provided with a curved guide rail (67), and the two sides of the mounting frame (62) are provided with two guide wheel groups (68) that cooperate with the curved guide rail (67). A lower limit structure is provided between the mounting frame (62) and the side wall of the water collection well (1).

8. A municipal sewage treatment system with automatic rainwater and sewage separation function according to claim 3, characterized in that: A sleeve (87) is fixedly provided in the middle of the medicine storage box (81), and a desiccant box (88) is inserted into the sleeve (87).

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