Rainwater collection and utilization of municipal water supply and drainage engineering sewage recovery equipment

Abstract

The present application relates to a kind of rainwater collection and utilization municipal water supply and sewerage engineering sewage recovery equipment, belong to municipal drainage technical field.The equipment includes pre-embedded drainage pipeline, shunt branch, drain tank, rainwater collection tank, collection cylinder and supporting assembly, shunt branch is communicated with rainwater collection tank by connecting pipe joint, connecting pipe joint is equipped with rainwater guide assembly, filter screen is installed in drain tank, collection cylinder is communicated with drain tank, shunt branch respectively by guide sleeve, L-shaped communication pipeline I.The rainwater guide assembly is overturned by floating plate and drives guide plate, realizes the self-adaptive adjustment of rainwater diversion;Garbage blocked by filter screen is introduced into collection cylinder, and is conveniently cleaned by cooperating with the pumping cylinder of sanitation operation vehicle by screw conveyor roller;Rainwater in rainwater collection tank is transported to public toilet closestool recycling by water pump and pressure tank.The equipment solves the problems of poor rainwater and sewage shunt effect, difficult garbage cleaning and low rainwater utilization rate in prior art.

Description

Technical Field

[0001] This invention belongs to the field of municipal drainage technology and relates to a sewage recycling device for municipal water supply and drainage projects that can collect and utilize rainwater. Background Technology

[0002] With the acceleration of urbanization, the scale and complexity of municipal water supply and drainage projects continue to increase, and water shortage and water pollution problems are becoming increasingly prominent. As a clean and renewable resource, rainwater recycling has become an important way to alleviate the pressure on municipal water supply and realize the recycling of water resources. At present, rainwater collection and sewage discharge equipment are generally installed in municipal water supply and drainage systems. The core function is to achieve rainwater and sewage separation, avoid increasing the treatment load of sewage treatment plants after rainwater and sewage are mixed. At the same time, some equipment can collect rainwater for greening irrigation, road washing and other scenarios.

[0003] In existing technologies, rainwater harvesting equipment mostly uses fixed-volume collection tanks or containers to collect rainwater through pipes, which is then pumped to the end user. Rainwater and wastewater separation mainly relies on pre-installed diversion pipes. After initial interception of debris by grilles or filters, rainwater and wastewater are discharged or treated separately along different pipes. However, these types of equipment still have many shortcomings in practical applications:

[0004] Firstly, the separation of rainwater and sewage is ineffective and lacks adaptive adjustment capabilities. Traditional rainwater and sewage separation structures are mostly fixed designs, achieving the separation of rainwater and sewage through a single pipe. They cannot dynamically adjust the separation ratio according to the amount of rainfall and changes in rainwater level. When the rainfall is small, rainwater collection is insufficient, and a large amount of rainwater is directly discharged into the sewage pipe, resulting in resource waste. When the rainfall is large, the mixed rainwater and sewage is prone to excessive flow into the rainwater collection system, leading to a deterioration in the quality of the collected rainwater and increasing the difficulty of subsequent treatment.

[0005] Secondly, garbage collection and cleaning are difficult and can easily cause pipe blockage. Although solid waste such as plastic bags, branches, and stones carried in rainwater and sewage can be initially intercepted by grilles or filters, the intercepted garbage often accumulates on the surface of the filter or at pipe corners, requiring regular manual cleaning. This is not only labor-intensive and dangerous, but also prone to filter blockage and poor water flow if not cleaned in time, and can even lead to pipe siltation, increasing the maintenance cost of municipal pipelines. Summary of the Invention

[0006] This invention aims to provide a simplified wastewater recycling device for municipal water supply and drainage projects. Addressing the problems of inadequate rainwater and wastewater separation and inconvenient garbage collection in existing technologies, it achieves efficient recycling by optimizing the diversion and conveying processes. During the development process, the waste caused by slow diversion response was first analyzed, and a floating mechanical linkage was adopted to ensure self-adaptation. Simultaneously, to address garbage accumulation, a spiral conveyor system integrated with sanitation services was introduced to facilitate convenient maintenance. This design originates from actual municipal needs, and component coordination was iterated step-by-step to form a reliable solution.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater, comprising: a drainage pipe pre-buried underground, a branch pipe connected to the top of the drainage pipe, a drainage trough provided at the top of the branch pipe, and a manhole cover detachably installed at the top of the drainage trough;

[0008] A rainwater collection tank is pre-buried underground. One side of the branch pipe is connected to the rainwater collection tank through a connecting pipe joint. A rainwater guiding component is installed inside the connecting pipe joint. The rainwater guiding component includes a float plate and a guide plate. The guide plate is located at the top of the branch pipe.

[0009] A collection cylinder is installed on one side of the diversion branch pipe. The collection cylinder is connected to the drainage tank through a guide sleeve. A filter screen for intercepting garbage is installed in the drainage tank. An L-shaped connecting pipe I is connected to one side of the diversion branch pipe. The other end of the L-shaped connecting pipe I is fixedly connected to the outer wall of the collection cylinder. A filter through hole connected to the L-shaped connecting pipe I is opened on the outer wall of the collection cylinder.

[0010] The floating plate rotates the guide plate as the water level in the rainwater collection tank changes, thus diverting and guiding the rainwater. The garbage intercepted by the filter screen is guided into the collection cylinder through the guide sleeve, and the sewage flows back to the diversion branch pipe after being filtered through the L-shaped connecting pipe I and the filter through hole.

[0011] As a further improvement to the above technical solution:

[0012] The connecting pipe joint includes a docking cylinder sleeved on the outer wall of the branch pipe and the drain trough. An L-shaped connecting pipe II is fixedly connected to one side of the docking cylinder. The bottom end of the L-shaped connecting pipe II extends into the rainwater collection tank. The L-shaped connecting pipe II is connected to a docking pipe, which extends into the rainwater collection tank. Holes are opened at the bottom ends of both the docking pipe and the L-shaped connecting pipe II. A rectangular opening communicating with the L-shaped connecting pipe II is opened on the outer wall of the docking cylinder.

[0013] The rainwater diversion assembly further includes a rotating shaft I rotatably installed inside an L-shaped connecting pipe II. A rotating seat I is fixedly sleeved on the outer wall of the rotating shaft I. A guide rod is fixedly installed on the inner wall of the L-shaped connecting pipe II. The float plate is slidably sleeved on the guide rod. The rotating seat I and the float plate are rotatably connected to the same connecting rod I. The rotating shaft II is rotatably installed inside the L-shaped connecting pipe II. A rotating seat III is fixedly sleeved on the outer wall of the rotating shaft II. The rotating seat II is fixedly sleeved on the outer wall of the rotating shaft I. The rotating seat II and the rotating seat III are rotatably connected to the same connecting rod II. The guide plate is fixedly connected to the outer wall of the rotating shaft II.

[0014] When the float slides along the guide rod, it drives the guide plate to flip through connecting rod I, rotating shaft I, connecting rod II, and rotating shaft II, thereby realizing the on / off control of the L-shaped connecting pipe II.

[0015] A spiral conveyor roller I is rotatably installed inside the collection cylinder. A sealing cover plate is detachably installed at the top of the collection cylinder. The spiral blades of the spiral conveyor roller I are in clearance fit with the inner wall of the collection cylinder for conveying the garbage intercepted inside the collection cylinder.

[0016] It also includes a water pump and a pressure tank installed on the ground. The water pump inlet extends through a pipe into a rainwater collection tank, and the water pump outlet is connected to the pressure tank through a pipe. The pressure tank is connected to the public toilet through a pipe.

[0017] The pump draws rainwater from the rainwater collection tank and sends it to the pressure tank. After the pressure tank stabilizes the water supply pressure, it delivers rainwater to the toilet, thus realizing rainwater recycling.

[0018] It also includes a sanitation vehicle and a garbage collection bin. The sanitation vehicle is adjustablely equipped with a pumping cylinder, and a spiral conveying roller II is rotatably installed inside the pumping cylinder. A drive motor is fixedly installed on the top of the pumping cylinder, and the output end of the drive motor is fixedly connected to the spiral conveying roller II. A sealing plug that is inserted and matched with the bottom end of the spiral conveying roller II is fixedly connected to the top of the spiral conveying roller I. A discharge opening is provided on one side of the top of the pumping cylinder. The garbage collection bin is installed at the bottom of the sanitation vehicle, and a feeding opening adapted to the discharge opening is opened on one side of the garbage collection bin.

[0019] The drive motor drives the spiral conveyor roller II and the spiral conveyor roller I to rotate synchronously, conveying the garbage inside the collection cylinder to the garbage collection bin through the discharge opening and the feed opening.

[0020] The sanitation vehicle is fixedly equipped with a support base, through which a rotating shaft is rotatably mounted. One end of the rotating shaft is fixedly connected to a rotating ring, and the pumping cylinder is fixedly installed inside the rotating ring. A connecting base plate is fixedly sleeved on the outer wall of the other end of the rotating shaft.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The municipal water supply and drainage engineering sewage recycling equipment disclosed in this invention can collect and utilize rainwater. Through the mechanical linkage structure of the rainwater diversion component, the rainwater flow rate can be adaptively adjusted. When the rainfall is small, rainwater can be fully collected and stored in the rainwater collection tank. The collected rainwater is pumped and pressurized by a pump and a pressurized tank to be transported to the public toilet to replace tap water for flushing, which significantly reduces the consumption of municipal tap water and improves the utilization rate of rainwater resources.

[0023] 2. The municipal water supply and drainage engineering sewage recycling equipment disclosed in this invention can collect and utilize rainwater. With the help of the filter screen in the drainage trough, the filter through holes in the collection cylinder and the diversion design of the L-shaped connecting pipe, rainwater and sewage can achieve solid-liquid separation and rainwater-sewage separation in the early stage of entering the equipment. The rainwater is recycled after purification, and the sewage with a small amount of impurities is discharged through the drainage pipe, which effectively reduces the total amount of pollutants entering the sewage treatment system and reduces the treatment pressure and operating cost of municipal sewage treatment plants.

[0024] 3. The municipal water supply and drainage engineering sewage recycling equipment disclosed in this invention can collect and utilize rainwater. After solid waste in rainwater and sewage is intercepted by a filter screen, it is collected into a collection cylinder through a guide sleeve and an L-shaped connecting pipe I. With the precise docking of the spiral conveyor roller I with the pumping cylinder of the sanitation vehicle, the garbage can be quickly transported to the garbage collection bin without the need for manual cleaning down the manhole. This avoids garbage accumulation and blockage of municipal pipelines, reduces the labor and time costs of pipeline dredging and maintenance, and reduces the corrosion and wear of the pipelines caused by garbage. Attached Figure Description

[0025] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention;

[0027] Figure 2 This is a cross-sectional view of the connecting pipe joint of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0028] Figure 3 This is a cross-sectional view of the drainage trough of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0029] Figure 4 This is a schematic cross-sectional view of the collection cylinder of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0030] Figure 5This is a schematic diagram of the connection structure between a sanitation vehicle and a pumping cylinder for a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0031] Figure 6 This is a schematic diagram of the hydraulic cylinder II and the pumping cylinder structure of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0032] Figure 7 for Figure 5 A magnified structural diagram of part A in the middle;

[0033] Figure 8 This is a cross-sectional structural diagram of the pumping cylinder of a municipal water supply and drainage engineering sewage recycling device that can collect and utilize rainwater according to the present invention.

[0034] Attached reference numerals: 1. Drainage pipe; 2. Branch pipe; 21. L-shaped connecting pipe I; 3. Drainage trough; 31. Manhole cover; 32. Filter screen; 4. Rainwater collection tank; 5. Connecting pipe joint; 51. Connecting cylinder; 501. Rectangular opening; 52. L-shaped connecting pipe II; 53. Connecting pipe; 6. Collection cylinder; 61. Guide sleeve; 62. Filter through hole; 63. Screw conveyor roller I; 64. Sealing cover plate; 65. Sealing plug; 7. Pressure tank; 8. Water pump; 9. Sanitation vehicle; 91. Support base; 911. Rotating shaft; 91 2. Connecting base plate; 92. Rotating ring; 93. Waste collection bin; 931. Feed opening; 932. Positioning base plate; 94. Multi-stage telescopic hydraulic cylinder; 95. Hydraulic cylinder II; 10. Pumping cylinder; 101. Spiral conveying roller II; 102. Drive motor; 103. Discharge opening; 11. Rainwater guiding assembly; 111. Rotating shaft I; 112. Rotating seat I; 113. Guide rod; 114. Float plate; 115. Connecting rod I; 116. Rotating seat II; 117. Rotating shaft II; 118. Guide plate; 119. Rotating seat III; 120. Connecting rod II. Detailed Implementation

[0035] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0036] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0037] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances. Example

[0038] like Figures 1-8 As shown, a municipal water supply and drainage engineering sewage recycling equipment that can collect and utilize rainwater is mainly used in the rainwater and sewage treatment and rainwater recycling and reuse scenarios of municipal roads. Its overall structure takes into account the functions of rainwater and sewage separation, garbage collection, rainwater storage and reuse, and the connection method and installation structure of each component have good feasibility and practicality.

[0039] Drainage pipe 1 is pre-buried in a pre-designed concrete trench beneath the municipal road. The inner wall of the trench is treated with anti-corrosion coating. A sand and gravel bedding layer is filled between the outer wall of the pipe and the inner wall of the concrete trench. The bedding layer is laid evenly to ensure that the pipe is under balanced stress and has strong stability after installation. One end of the branch pipe 2 is connected to the top of drainage pipe 1 by hot-melt welding. The weld at the connection is full and can effectively prevent leakage after anti-corrosion treatment. The top of the branch pipe 2 extends into the installation pit under the sidewalk. The shape of the installation pit is adapted to the drainage channel 3. The bottom of the pit is also laid with a sand and gravel bedding layer for leveling. The drainage trough 3 is made of stainless steel and is a square trough structure. Its top is flush with the ground. The manhole cover 31 is detachably installed on the top of the drainage trough 3 by stainless steel bolts. The bolts are evenly distributed along the edge of the manhole cover 31. Multiple water-permeable holes are evenly opened on the manhole cover 31. The water-permeable holes are arranged in a quincunx pattern, which can ensure that rainwater can seep in quickly and can initially prevent large debris such as plastic bags and branches from entering the equipment. The contact surface between the manhole cover 31 and the drainage trough 3 is equipped with rubber gaskets to enhance the sealing effect and prevent the manhole cover 31 from shifting.

[0040] The rainwater collection tank 4 is pre-buried underground on one side of the drainage pipe 1, maintaining a reasonable horizontal distance from the drainage pipe 1 to facilitate the installation and arrangement of the connecting pipe joint 5. The rainwater collection tank 4 is made of welded steel plate, and the inner wall of the tank is coated with a food-grade anti-corrosion coating, which can effectively prevent secondary pollution during rainwater storage. The bottom of the tank is equipped with an anti-slip pad to prevent displacement during long-term use. The top of the tank is equipped with an inspection port, which is located near the edge of the tank for easy access and maintenance. The inspection port is sealed by a sealing cap, which is threaded to the inspection port, and further enhances the sealing performance with a sealing ring. The connecting pipe joint 5 has a connecting cylinder 51 made of stainless steel. Its two ends are fitted onto the outer walls of the branch pipe 2 and the drain trough 3, and are locked and fixed by double clamps. The double clamps are distributed at both ends of the connecting cylinder 51, and the inner side of the clamp is equipped with a nitrile rubber gasket. After tightening the bolts, a tight seal can be achieved to prevent rainwater leakage. An L-shaped connecting pipe II 52 is welded and fixed to one side of the connecting cylinder 51. The bending angle of the L-shaped connecting pipe II 52 is a right angle, and its bottom is connected to the connecting pipe 53 through a flange. A rubber sealing gasket is provided between the flanges, and the bolts are evenly distributed around the flange circumference to ensure a firm connection. The bottom ends of the connecting pipe 53 and the L-shaped connecting pipe II 52 extend into the rainwater collection tank 4, with the extended ends close to the bottom of the tank to make full use of the tank's capacity to store rainwater. The bottom ends of both the connecting pipe 53 and the L-shaped connecting pipe II 52 have circular holes to balance the pressure inside and outside the pipes and prevent water flow obstruction due to pressure difference. A rectangular opening 501 is opened on the outer wall of the connecting cylinder 51, which communicates with the interior of the L-shaped connecting pipe II 52. The edges of the opening are chamfered to avoid scratching the rainwater flow channel and reduce water flow resistance.

[0041] The rainwater diversion assembly 11 is installed inside the L-shaped connecting pipe II 52. The diversion rod 113 is a cylindrical stainless steel rod, and its two ends are fixed to the inner wall of the L-shaped connecting pipe II 52 by welding. The weld is polished to ensure that the inner wall of the flow channel is smooth. The outer wall of the diversion rod 113 is machined with an axial guide groove. The float plate 114 is made of closed-cell foam plastic material, which has sufficient buoyancy to drive the linkage mechanism. The inner wall of the float plate 114 is provided with a slider that matches the guide groove. The slider is made of wear-resistant nylon material to reduce friction loss with the diversion rod 113 and ensure that the float plate 114 can only slide up and down along the diversion rod 113 and will not rotate circumferentially. Both ends of connecting rod I115 are rotatably connected to rotating seat I112 and float plate 114 respectively via pins. Stainless steel elastic retaining rings are installed at both ends of the pins to prevent them from falling off during operation. Rotating seat I112 is fixedly sleeved on the outer wall of rotating shaft I111 by a flat key. The flat key and keyway fit tightly to ensure stable power transmission. Both ends of rotating shaft I111 are rotatably installed in bearing seats on the inner wall of L-shaped connecting pipe II52 via waterproof bearings with sealing rings. The outer ring of the waterproof bearing is interference-fitted with the bearing seat, and the inner ring is transition-fitted with rotating shaft I111, effectively preventing rainwater from entering the bearing and causing jamming or corrosion. Rotating seat II116 is fixed to the outer wall of rotating shaft I111 by a flat key, located on one side of rotating seat I112. The two ends of connecting rod II120 are connected to rotating seat II116 and rotating seat III119 respectively by pins, with the connection method being the same as connecting rod I115, ensuring smooth and synchronized operation (the linkage design improves the flow diversion response accuracy, reduces the risk of jamming in traditional valves, and improves system reliability). Rotating seat III119 is fixed to the outer wall of rotating shaft II117 by a flat key. The two ends of rotating shaft II117 are also installed on the inner wall of L-shaped connecting pipe II52 by waterproof bearings. The guide plate 118 is fixed to the outer wall of rotating shaft II117 by welding. The shape of the guide plate 118 is adapted to the internal cross-section of the diversion branch pipe 2, and its edge is bonded with a lip-shaped rubber sealing strip to ensure that the guide plate 118 can tightly fit the inner wall of the pipe when closed, preventing rainwater leakage.

[0042] The collecting cylinder 6 is welded from stainless steel and has an overall cylindrical structure. Its bottom is fixed to the ground by a concrete foundation, which is poured flat and fits tightly to the bottom of the cylinder to ensure stable load-bearing capacity. One end of the guide sleeve 61 is connected to the bottom of the drainage trough 3 via a flange. A rubber sealing gasket is installed between the flanges, and bolts are evenly distributed around the circumference of the flange to ensure uniform stress. The other end is welded to the side wall of the collecting cylinder 6, and the weld is treated with anti-corrosion to prevent rainwater erosion. The filter screen 32 is detachably installed inside the drainage trough 3 by stainless steel bolts, located below the guide sleeve 61. The screen is fixed by a pressure frame, which is tightened to the edge of the screen by bolts, ensuring a firm installation and facilitating disassembly and cleaning later. One end of the L-shaped connecting pipe I21 is welded to the side wall of the branch pipe 2, with a full weld and no pores. The other end is welded to the outer wall of the collection cylinder 6. The outer wall of the collection cylinder 6 has multiple filter holes 62, which are connected to the inside of the L-shaped connecting pipe I21 to further filter impurities and guide rainwater. The bottom end of the spiral conveying roller I63 is rotatably mounted inside the collection cylinder 6 via a bearing. The bearing seat adopts a sealed structure to prevent impurities from entering the bearing. The spiral blades of the spiral conveying roller I63 have a continuous spiral structure, and the blade edges are treated with wear resistance. The gap between the roller and the inner wall of the collection cylinder 6 is reasonably controlled to ensure that there is no residue or jamming during garbage transportation. The sealing cover 64 is detachably installed on the top of the collection cylinder 6 by bolts. The contact surface between the cover and the top of the cylinder is equipped with a sealing gasket, which can prevent odor from escaping and prevent rainwater from entering the interior of the collection cylinder 6.

[0043] The water pump 8 is installed in a ground-level equipment room with rainproof and ventilation functions. The water pump 8 is a self-priming centrifugal pump, with its inlet extending through a PVC pipe into the rainwater collection tank 4. A filter screen is installed at the end of the pipe; the filter screen is detachable and secured with clips for easy periodic cleaning of impurities, preventing pump blockage and damage. The drain end of the water pump 8 is connected to the pressure tank 7 via a high-pressure rubber hose. A check valve and pressure gauge are installed on the hose. The check valve uses a one-way sealing structure to prevent water in the pressure tank 7 from flowing back to the water pump 8. The pressure gauge is used to monitor the pressure in the hose in real time, allowing operators to monitor the equipment's operating status. The pressure tank 7 is made of stainless steel and contains a butyl rubber air bladder. The air bladder is elastic and durable, effectively stabilizing the water supply pressure and preventing water pressure fluctuations from affecting use. The pressure tank 7 is connected to the public restroom's toilet water supply pipe via a PE pipe. An adjustable pressure reducing valve is installed on the pipe, allowing adjustment of the output pressure to meet toilet flushing needs.

[0044] The sanitation vehicle 9 is a conventional municipal sanitation vehicle. The support base 91 is fixedly installed inside the vehicle's cargo compartment using high-strength bolts. The bolts pass through the base and connect to a pre-embedded steel plate at the bottom of the cargo compartment, enhancing the fixing strength. A rotating shaft 911 passes through the support base 91 and is rotatably connected to it via a deep groove ball bearing with a dust cover. The dust cover effectively prevents dust from entering the bearing, extending its service life. A rotating ring 92 is welded to one end of the rotating shaft 911, with a strong weld. The pumping cylinder 10 passes through the rotating ring 92. A connecting base plate 912 is welded to the other end of the rotating shaft 911, with the weld reinforced to improve load-bearing capacity. One end of the cylinder body of hydraulic cylinder II 95 is rotatably connected to the beam of sanitation vehicle 9 via a pin, and one end of the piston rod is rotatably connected to the connecting base plate 912 via a pin. A self-lubricating bearing is provided at the pin connection to reduce friction loss. Through the extension and retraction of hydraulic cylinder II 95, the rotating shaft 911 can be driven to rotate around the support base 91, thereby flexibly adjusting the tilt angle of the pumping cylinder 10 to adapt to different operating scenarios. When not in use, it can be horizontally stored on sanitation vehicle 9, and when in use, it can be unfolded into a vertical position or other angles. The cylinder body of multi-stage telescopic hydraulic cylinder 94 is fixed to the outer wall of pumping cylinder 10 by bolts, and one end of the piston rod is fixedly connected to rotating ring 92 by bolts. Multi-stage telescopic hydraulic cylinder 94 adopts a segmented telescopic design, which can precisely control the axial lifting and lowering movement of pumping cylinder 10 to achieve precise docking with collection cylinder 6. The sealing plug 65 is welded to the top of the spiral conveyor roller I 63. Inside the extraction cylinder 10, a spiral conveyor roller II 101 rotates via bearings. The bottom end of the spiral conveyor roller II 101 has a slot that mates with the sealing plug 65; the two are in a clearance fit, and lithium-based grease is applied to the mating surfaces to reduce wear during insertion and removal. When the extraction cylinder 10 descends, the sealing plug 65 can be accurately inserted into the slot, achieving effective power transmission. The drive motor 102 is bolted to the top of the extraction cylinder 10 and is a geared motor. The output shaft of the drive motor 102 is fixedly connected to the spiral conveyor roller II 101 via a flexible coupling. The flexible coupling absorbs vibration, protects the motor and the spiral conveyor roller, and ensures stable power transmission. The discharge opening 103 is welded to one side of the top of the pumping cylinder 10 and is tilted downwards to facilitate the smooth sliding of garbage. The garbage collection bin 93 is fixed to the bottom compartment of the sanitation vehicle 9 by bolts. The feed opening 931 on one side corresponds to the position where the discharge opening 103 is lowered. The positioning plate 932 is fixed to one side of the garbage collection bin 93 by welding. The positioning plate 932 is arc-shaped and its curvature is perfectly matched with the curvature of the outer wall of the discharge opening 103. The inner side of the positioning plate 932 is pasted with an anti-slip rubber pad, which can enhance the fit with the discharge opening 103 and ensure that the garbage can accurately enter the garbage collection bin 93 during discharge, avoiding spillage and secondary pollution.

[0045] During rainfall, rainwater flows evenly into the drainage channel 3 through the permeable holes of the manhole cover 31. When passing through the filter screen 32, solid waste such as plastic bags, branches, and stones are intercepted on the screen surface. The rainwater then flows through the screen openings to the guide sleeve 61 and the branch pipe 2, effectively reducing channel blockage. Part of the rainwater enters the collection cylinder 6 directly through the guide sleeve 61, while the other part flows into the branch pipe 2. When the water level in the rainwater collection tank 4 is low, the float plate 114, under its own weight, is in a low position along the guide rod 113. This, through the connecting rod I 115, drives the rotating seat I 112 to rotate around the rotating shaft I 111. The rotation of the rotating shaft I 111 synchronously drives the rotating seat II 116 to rotate. The rotating seat II 116, through the connecting rod II 120, pulls the rotating seat III 119, causing the rotating shaft II 117 to rotate accordingly. This, in turn, causes the guide plate 118 to tilt and seal the branch pipe 2. Rainwater in the diversion branch pipe 2 flows smoothly into the L-shaped connecting pipe II 52 through the rectangular opening 501, and then flows into the rainwater collection tank 4 for storage through the connecting pipe 53. When the rainfall is heavy and the water level in the rainwater collection tank 4 continues to rise to the preset height, the float plate 114 moves smoothly upward along the guide rod 113 under the action of buoyancy, and drives the guide plate 118 to slowly flip downward and open the diversion branch pipe 2. Excess rainwater is discharged through the drainage pipe 1 to prevent the rainwater collection tank 4 from overflowing. The water flows to the collection cylinder 6, is filtered through the filter hole 62, and is discharged back into the diversion branch pipe 2. Solid waste is left in the collection cylinder 6, while liquid is discharged through the drainage pipe 1, realizing the separation of rainwater and sewage and the separation of garbage.

[0046] When it is necessary to clean the garbage inside the collection cylinder 6, drive the sanitation vehicle 9 to the equipment installation position, align the position of the collection cylinder 6 with the vehicle's own positioning device or by manual observation, operate the hydraulic cylinder II 95 to adjust the tilt angle of the pumping cylinder 10 so that the bottom end of the pumping cylinder 10 is aligned with the top end of the collection cylinder 6, and then start the multi-stage telescopic hydraulic cylinder 94 to drive the pumping cylinder 10 to descend axially, so that the slot at the bottom end of the spiral conveying roller II 101 is precisely engaged with the sealing plug 65 at the top end of the spiral conveying roller I 63. At the same time, the bottom end of the pumping cylinder 10 is tightly fitted with the top end of the collection cylinder 6, forming a closed seal on one end of the guide sleeve 61 to prevent dust or leakage during garbage transportation. At this time, the discharge opening 103 and the feed opening 931 correspond. The drive motor 102 is started, and the motor output power is transmitted to the screw conveyor roller II 101 through the flexible coupling. The screw conveyor roller II 101 drives the screw conveyor roller I 63 to rotate synchronously through the sealing plug 65. The garbage in the collection cylinder 6 moves upward along the inner wall of the collection cylinder 6 under the continuous pushing of the screw blades. There is no residue or jamming during the process. Finally, the garbage smoothly enters the garbage collection bin 93 through the discharge opening 103 and the feed opening 931, completing the garbage cleaning and recycling. After the garbage is cleaned up, the drive motor 102 is turned off, and the multi-stage telescopic hydraulic cylinder 94 drives the extraction cylinder 10 to rise, so that the sealing plug 65 separates from the slot. Then, the hydraulic cylinder II 95 is used to adjust the extraction cylinder 10 to reset, and the sanitation vehicle 9 can be driven away from the site.

[0047] When recycled rainwater is needed, pump 8 is started. The pump body first performs self-priming and venting to ensure it is full of water before normal rainwater delivery. Pump 8 draws rainwater stored in rainwater collection tank 4 and sends it through pipelines to pressure tank 7. Pressure tank 7 uses internal air bladders to buffer pressure fluctuations and stabilize the water supply pressure. When the pressure inside the tank reaches a preset value, pump 8 automatically stops; when the pressure drops below the set value, it automatically restarts to automatically replenish water and ensure a stable water supply. Pressure tank 7 continuously delivers the treated rainwater to the toilets in public restrooms, realizing rainwater recycling and effectively improving water resource utilization.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A municipal water supply and drainage engineering wastewater recycling device capable of rainwater harvesting and utilization, characterized in that, include: A drainage pipe (1) is pre-buried underground. A branch pipe (2) is connected to the top of the drainage pipe (1). A drainage trough (3) is set on the top of the branch pipe (2). A manhole cover (31) can be detachably installed on the top of the drainage trough (3). A rainwater collection tank (4) is pre-buried underground. One side of the branch pipe (2) is connected to the rainwater collection tank (4) through a connecting pipe joint (5). A rainwater guiding component (11) is installed inside the connecting pipe joint (5). The rainwater guiding component (11) includes a float plate (114) and a guide plate (118). The guide plate (118) is located at the top of the branch pipe (2). A collection cylinder (6) is set on one side of the diversion branch pipe (2). The collection cylinder (6) is connected to the drain tank (3) through the guide sleeve (61). A filter screen (32) for intercepting garbage is installed in the drain tank (3). An L-shaped connecting pipe I (21) is connected to one side of the diversion branch pipe (2). The other end of the L-shaped connecting pipe I (21) is fixedly connected to the outer wall of the collection cylinder (6). A filter through hole (62) connected to the L-shaped connecting pipe I (21) is opened on the outer wall of the collection cylinder (6). Among them, the floating plate (114) drives the guide plate (118) to flip as the water level in the rainwater collection tank (4) changes, realizing the diversion and guidance of rainwater. The garbage intercepted by the filter screen (32) is introduced into the collection cylinder (6) through the guide sleeve (61). The sewage is filtered through the L-shaped connecting pipe I (21) and the filter through hole (62) and then flows back to the diversion branch pipe (2). The connecting pipe joint (5) includes a docking cylinder (51) sleeved on the outer wall of the branch pipe (2) and the drain trough (3). An L-shaped connecting pipe II (52) is fixedly connected to one side of the docking cylinder (51). The bottom end of the L-shaped connecting pipe II (52) extends into the rainwater collection tank (4). The L-shaped connecting pipe II (52) is connected to a docking pipe (53). The docking pipe (53) extends into the rainwater collection tank (4). Holes are opened at the bottom ends of both the docking pipe (53) and the L-shaped connecting pipe II (52). A rectangular opening (501) communicating with the L-shaped connecting pipe II (52) is opened on the outer wall of the docking cylinder (51). The rainwater diversion assembly (11) also includes a rotating shaft I (111) rotatably installed inside the L-shaped connecting pipe II (52). The rotating shaft I (111) is fixedly fitted with a rotating seat I (112) on its outer wall, and a guide rod (113) is fixedly installed on the inner wall of the L-shaped connecting pipe II (52). The float plate (114) is slidably fitted on the guide rod (113). The rotating seat I (112) and the float plate (114) are rotatably connected by the same connecting rod I (115). The rotating shaft II (117) is rotatably installed inside the L-shaped connecting pipe II (52). The rotating seat III (119) is fixedly fitted on the outer wall of the rotating shaft II (117). The rotating seat II (116) is fixedly fitted on the outer wall of the rotating shaft I (111). The rotating seat II (116) and the rotating seat III (119) are rotatably connected by the same connecting rod II (120). The guide plate (118) is fixedly connected to the outer wall of the rotating shaft II (117). When the float plate (114) slides along the guide rod (113), it drives the guide plate (118) to flip through the connecting rod I (115), rotating shaft I (111), connecting rod II (120), and rotating shaft II (117), thereby realizing the on / off control of the L-shaped connecting pipe II (52).

2. The municipal water supply and drainage engineering wastewater recycling equipment capable of rainwater harvesting and utilization according to claim 1, characterized in that, The collection cylinder (6) is rotatably installed with a spiral conveying roller I (63), and a sealing cover plate (64) is detachably installed at the top of the collection cylinder (6). The spiral blades of the spiral conveying roller I (63) are in clearance fit with the inner wall of the collection cylinder (6) for conveying the garbage intercepted in the collection cylinder (6).

3. The municipal water supply and drainage engineering wastewater recycling equipment capable of rainwater harvesting and utilization according to claim 2, characterized in that, It also includes a water pump (8) and a pressure tank (7) installed on the ground. The water inlet of the water pump (8) extends into the rainwater collection tank (4) through a pipe. The drain of the water pump (8) is connected to the pressure tank (7) through a pipe. The pressure tank (7) is connected to the public toilet through a pipe. Among them, the water pump (8) draws out the rainwater stored in the rainwater collection tank (4) and sends it into the pressure tank (7). After the pressure tank (7) stabilizes the water supply pressure, it delivers rainwater to the toilet to realize rainwater recycling.

4. The municipal water supply and drainage engineering wastewater recycling equipment capable of rainwater harvesting and utilization according to claim 3, characterized in that, It also includes a sanitation vehicle (9) and a garbage collection bin (93). The sanitation vehicle (9) is equipped with an adjustable pumping cylinder (10). A spiral conveying roller II (101) is rotatably installed inside the pumping cylinder (10). A drive motor (102) is fixedly installed on the top of the pumping cylinder (10). The output end of the drive motor (102) is fixedly connected to the spiral conveying roller II (101). A sealing plug (65) that is inserted and matched with the bottom end of the spiral conveying roller II (101) is fixedly connected to the top end of the spiral conveying roller I (63). A discharge opening (103) is provided on one side of the top end of the pumping cylinder (10). The garbage collection bin (93) is installed at the bottom of the sanitation vehicle (9). A feed opening (931) that matches the discharge opening (103) is opened on one side of the garbage collection bin (93). Among them, the drive motor (102) drives the spiral conveyor roller II (101) and the spiral conveyor roller I (63) to rotate synchronously, and transport the garbage in the collection cylinder (6) to the garbage collection box (93) through the discharge opening (103) and the feed opening (931).

5. The municipal water supply and drainage engineering wastewater recycling equipment for rainwater harvesting and utilization according to claim 4, characterized in that, A support base (91) is fixedly installed on the sanitation vehicle (9). A rotating shaft (911) is rotatably installed through the support base (91). A rotating ring (92) is fixedly connected to one end of the rotating shaft (911). The pumping cylinder (10) is fixedly installed inside the rotating ring (92). A connecting base plate (912) is fixedly sleeved on the outer wall of the other end of the rotating shaft (911). The sanitation vehicle (9) is equipped with a hydraulic cylinder II (95). One end of the hydraulic cylinder II (95) is rotatably connected to the beam of the sanitation vehicle (9). The output end of the hydraulic cylinder II (95) is rotatably connected to the connecting base plate (912). The hydraulic cylinder II (95) extends and retracts to drive the rotating shaft (911) to rotate, thereby adjusting the tilt angle of the pumping cylinder (10).

6. The municipal water supply and drainage engineering wastewater recycling equipment for rainwater harvesting and utilization according to claim 5, characterized in that, The outer wall of the pumping cylinder (10) is fixedly installed with a multi-stage telescopic hydraulic cylinder (94). The output end of the multi-stage telescopic hydraulic cylinder (94) is fixedly connected to the rotating ring (92). The inside of the collecting cylinder (6) is stepped. The connection between the guide sleeve (61) and the collecting cylinder (6) is located at the top of the collecting cylinder (6). The diameter of the pumping cylinder (10) is adapted to the top diameter of the collecting cylinder (6). Among them, the multi-stage telescopic hydraulic cylinder (94) drives the pumping cylinder (10) to move up and down, so that the sealing plug (65) is inserted into or separated from the spiral conveying roller II (101), and at the same time, the bottom end of the pumping cylinder (10) is attached to the top end of the collecting cylinder (6) to seal one end of the guide sleeve (61).

7. The municipal water supply and drainage engineering wastewater recycling equipment for rainwater harvesting and utilization according to claim 6, characterized in that, A positioning base plate (932) is fixedly connected to one side of the garbage collection bin (93). The positioning base plate (932) is arc-shaped, and the curvature of the positioning base plate (932) is adapted to the diameter of the discharge opening (103) to guide the garbage discharged from the discharge opening (103) to accurately enter the feed opening (931).

8. The municipal water supply and drainage engineering wastewater recycling equipment for rainwater harvesting and utilization according to claim 1, characterized in that, The guide plate (118) has a lip-shaped rubber sealing strip bonded to its edge to enhance the sealing performance when the guide plate (118) is closed.

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