A sewer dredging device and a sewage treatment system

Abstract

The present invention relates to the technical field of sewage treatment, and specifically to a sewer dredging device and a sewage treatment system, which include a base shaft installed between two horizontally arranged horizontal pipes arranged side by side. A seesaw is rotatably installed on the base shaft, and water receiving troughs capable of receiving sewage flowing out of the corresponding horizontal pipes are respectively installed at both ends of the seesaw; the trough length directions of the two water receiving troughs are respectively parallel to the axial directions of the corresponding horizontal pipes, and one end of the two water receiving troughs close to the horizontal pipes is an outlet end for discharging the sewage received in the water receiving trough, and the other end is a water blocking end for blocking the sewage flowing down from the horizontal pipes; the two water receiving troughs can swing up and down alternately under the impact of the sewage flowing out alternately from the two horizontal pipes, and cleaning rods inserted into the corresponding horizontal pipes are arranged on both of the two water receiving troughs, and the two cleaning rods can perform a flapping action of flapping the inner bottom surface of the corresponding horizontal pipe along with the up-and-down alternating swing of the two water receiving troughs. The present invention can effectively avoid the accumulation of solids in the horizontal pipe of the L-shaped sewer, extend the period of manual cleaning, and reduce the cleaning cost.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a sewer pipe dredging device and a sewage treatment system. Background Art

[0002] As a key equipment for sewage treatment, sewer pipes are prone to blockage due to accumulation of solid matter during daily use, causing them to lose their drainage function. Therefore, they need to be cleaned regularly to avoid blockage as much as possible.

[0003] In daily life, the most commonly used are kitchen sewage pipes and bathroom sewage pipes. In cities, due to the high buildings and large number of residents, it is usually necessary to use branch pipes to converge into a main pipe for sewage discharge, collection and treatment. In some remote areas or rural areas, there are usually one or two-story buildings and the residents are more dispersed. Therefore, each household usually uses L-shaped sewer pipes arranged side by side to discharge kitchen sewage and bathroom sewage, and uses buckets or dug pits to collect sewage for subsequent reuse.

[0004] During the sewage discharge process, the sewage flows along the vertical pipe of the L-shaped sewer pipe to the horizontal pipe, and then flows into the sewage treatment point through the horizontal pipe. Since the wall of the vertical pipe is relatively smooth, and the adhesion force between the solids and the pipe wall is much smaller than the sum of their own gravity and the thrust of the water flow, it is difficult for them to adhere to the vertical pipe. For the horizontal pipe, although its wall is also relatively smooth, the solids lose the driving force of gravity at this time. On the contrary, gravity is converted into friction between the solids and the pipe wall, which hinders the movement of the solids. As the thrust of the water flow decreases, the friction force on the solids is greater than the thrust of the water flow, and some solids will remain in the horizontal pipe at this time. As time goes by, in the absence of water flow in the horizontal pipe, the water on the surface of the solids evaporates, so they stick to the horizontal pipe, causing the lower surface of the pipe wall in the horizontal pipe to become rough, so that when the sewage is discharged next time, it can provide greater friction resistance, causing more solids to accumulate and stick in the horizontal pipe. In the long run, the flow of the sewer pipe will eventually decrease, or even become blocked, and manual cleaning will be required at this time.

[0005] It can be seen that the horizontal pipe of the current L-shaped sewer pipe is prone to solid accumulation during use, and requires regular manual cleaning and dredging, which is time-consuming and labor-intensive, and therefore needs to be solved urgently. Summary of the invention

[0006] In order to avoid and overcome the technical problems existing in the prior art, the present invention provides a sewer pipe dredging device and a sewage treatment system. The present invention can effectively avoid the accumulation of solids in the L-shaped sewer pipe transverse pipe, extend the manual cleaning cycle, and reduce the cleaning cost.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A sewer dredging device includes a base shaft installed between two horizontally arranged pipes arranged side by side. The base shaft is parallel to the horizontal pipes. A seesaw is rotatably installed on the base shaft. Water receiving troughs for receiving sewage flowing out from the corresponding horizontal pipes are respectively installed at both ends of the seesaw. The trough length directions of the two water receiving troughs are respectively parallel to the axial directions of the corresponding horizontal pipes. And one end of the two water receiving troughs close to the horizontal pipes is the water outlet end for flowing out the sewage received in the trough, and the other end is the water blocking end for blocking the sewage flowing down from the horizontal pipes. The two water receiving troughs can swing up and down alternately under the impact of the sewage flowing out alternately from the two horizontal pipes. Cleaning rods inserted into the corresponding horizontal pipes are arranged on both water receiving troughs. The two cleaning rods can perform a flapping action of flapping the inner bottom surface of the corresponding horizontal pipes along with the up and down alternating swing of the two water receiving troughs.

[0009] As a further scheme of the present invention: The cleaning rod is L-shaped. Its horizontal rod is inserted into the horizontal pipe, and its vertical rod is inserted into the vertical pipe. A vertically arranged avoidance groove is opened on the inner pipe wall of the vertical pipe close to the water receiving trough. The vertical rod is slidably inserted into the avoidance groove to avoid the sewage falling in the vertical pipe.

[0010] As a further scheme of the present invention: A horizontal groove for the horizontal rod to be embedded when it is at the highest point is opened on the inner top surface of the horizontal pipe, and the horizontal groove and the avoidance groove are communicated and cooperated to form an L-shaped hidden groove.

[0011] As a further scheme of the present invention: The transition between the vertical rod and the horizontal rod is an arc transition.

[0012] As a further scheme of the present invention: A U-shaped plate is clamped at the water outlet end of the water receiving trough, and the cleaning rod is fixedly installed at the highest point of the U-shaped plate.

[0013] As a further scheme of the present invention: Scrapers capable of sliding and scraping the inner wall of the water receiving trough along the trough length direction are installed in both water receiving troughs. A horizontally arranged reference rod that is fixedly installed is installed in the middle of the two water receiving troughs, and the length direction of the reference rod is perpendicular to the trough length direction of the water receiving trough. Both ends of the reference rod are respectively hinged to the scrapers close to the corresponding rod ends through connecting rods to form a double-hinged three-rod mechanism in cooperation. The two scrapers can perform a reciprocating scraping action of scraping the water receiving trough along with the up and down alternating swing of the two water receiving troughs under the traction of the two connecting rods.

[0014] As a further scheme of the present invention: Rolled edges that are bent inward are formed on both sides of the water receiving trough. Both ends of the arc-shaped scraper fitted in the water receiving trough respectively abut against the inner side surfaces of the two rolled edges.

[0015] As a further solution of the present invention: The base shaft is fixedly installed on the wall surface between the two horizontal pipes, and the axis of the base shaft is located in the symmetry plane of the two horizontal pipes; the reference rod is fixed at the other shaft end of the base shaft, and the two cooperate to form a T-shaped rod.

[0016] A sewage treatment system, which applies the above-mentioned sewer dredging device, includes a first treatment tank for purifying toilet sewage and a second treatment tank for purifying kitchen sewage and bathroom sewage at the same time; the water inlet of the first treatment tank is connected to a toilet sewer, and the water outlet of the first treatment tank is communicated with the water inlet of the second treatment tank; the water inlet of the second treatment tank is also connected and installed with an L-shaped kitchen sewer and an L-shaped bathroom sewer, and the kitchen sewer and the bathroom sewer are arranged side by side; the sewer dredging device is installed between the kitchen sewer and the bathroom sewer to dredge the two.

[0017] As a further solution of the present invention: The first treatment tank includes a first ripening tank, a second ripening tank and a sedimentation tank that are connected in sequence along the water flow direction; the first ripening tank and the second ripening tank are connected by a first connecting pipe, and the height of the water inlet of the first connecting pipe in the first ripening tank is lower than the height of the water outlet of the first connecting pipe in the second ripening tank; the second ripening tank and the sedimentation tank are connected by a second connecting pipe, and the height of the water inlet of the second connecting pipe in the second ripening tank is lower than the height of the water outlet of the second connecting pipe in the sedimentation tank; the second treatment tank includes a sedimentation tank and a wetland tank arranged in sequence along the water flow direction, and the kitchen sewer and the bathroom sewer are installed in the sedimentation tank; the sedimentation tank and the wetland tank are connected to each other by a U-shaped pipe with an opening downward; the sedimentation tank is connected to the sedimentation tank through a third connecting pipe, and a total water outlet pipe is installed at the water outlet of the wetland tank.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In the sewer dredging device of the present invention, the sewage impact drives the water receiving tank to swing up and down, driving the cleaning rod to beat the inner bottom surface of the horizontal pipe. It cleverly uses the kinetic energy of the sewage itself as the power source, without additional energy input, which is energy-saving and environmentally friendly; the automatic beating action of the cleaning rod can remove the solid deposits in the horizontal pipe in real time, avoiding pipeline blockage caused by impurity deposition, significantly extending the manual cleaning cycle; reducing the frequency of manual intervention, directly reducing the cleaning costs such as manpower and material resources, and at the same time ensuring the long-term and efficient drainage of the sewer, improving the overall use efficiency.

[0020] 2. The cleaning rod is designed in an L shape. The horizontal rod is responsible for the flapping cleaning inside the horizontal pipe, and the vertical rod "staggers peaks" with the sewage in the vertical pipe through the avoidance groove. This not only ensures that the cleaning rod swings with the water receiving tank to complete the cleaning task of the horizontal pipe, but also creates space for the sewage falling in the vertical pipe through the avoidance groove, avoiding the vertical rod from obstructing normal drainage and hanging on solid substances in the sewage, realizing the non-interference between the "dredging" and "draining" processes, and making the device more compatible in function.

[0021] 3. The horizontal groove on the inner top surface of the horizontal pipe is connected to the avoidance groove to form an L-shaped hidden groove. When the horizontal rod of the cleaning rod swings with the water receiving tank to the highest point, it can be embedded in the horizontal groove for storage. This design eliminates the potential obstruction of the cleaning rod to the sewage flow, that is, in the non-working state, the cleaning rod is completely hidden, and the sewage flows through the horizontal pipe without structural interference, ensuring unobstructed drainage paths, optimizing the space utilization rate inside the pipe, and enhancing the overall fluency of the system.

[0022] 4. The transition between the vertical rod and the horizontal rod adopts an arc design. From the perspective of fluid mechanics, the arc transition can effectively reduce the resistance when the sewage impacts the cleaning rod, making the water flow smoother; from the perspective of mechanical durability, it avoids frequent scraping between sharp corners and the inner wall of the horizontal pipe, reduces the wear speed of components, extends the service life of the cleaning rod, and at the same time reduces the risk of debris accumulation caused by scraping, maintaining the cleanliness inside the pipe.

[0023] 5. A U-shaped plate is clamped at the water outlet end of the water receiving tank, and the cleaning rod is fixed at the highest point of the U-shaped plate. This installation method strengthens the stability of the cleaning rod: the U-shaped plate provides reliable support for the cleaning rod, ensuring that it always maintains an accurate position during the swinging process of the water receiving tank, making the flapping action more regular and impactful, enhancing the cleaning effect on the inner wall of the horizontal pipe, and avoiding the problem of cleaning failure caused by loosening.

[0024] 6. The scraper is driven by a double-hinged three-bar mechanism to scrape the inner wall of the water receiving tank as the water receiving tank swings. When the water receiving tank receives sewage, impurities are easily attached to the inner wall. The reciprocating scraping of the scraper can remove these residues in time: on the one hand, it prevents the accumulation of impurities from affecting the swinging sensitivity of the water receiving tank, on the other hand, it maintains the cleanliness inside the water receiving tank, avoids the long-term retention of pollutants from generating odors or bacteria, and at the same time maintains the instantaneous water storage capacity of the water receiving tank, enabling it to receive a sufficient amount of water to ensure that the water it receives can make it move downward, further enhancing the overall operation stability and hygiene of the device.

[0025] 7. The curled edge of the water receiving tank cooperates with the arc-shaped scraper, and both ends of the scraper abut against the inner side surface of the curled edge. The curled edge provides accurate guidance for the movement of the scraper, ensuring that the scraping action covers the entire inner wall of the water receiving tank without cleaning dead corners; at the same time, the fit between the curled edge and the scraper enhances the sealing performance of the water receiving tank, preventing sewage from overflowing during the swinging process, ensuring the comprehensiveness of scraping and cleaning, and avoiding sewage leakage from polluting the surrounding environment.

[0026] 8. The base shaft and the reference rod form a T-shaped structure, and the base shaft is symmetrically installed on the wall between the two horizontal pipes. The symmetrical layout ensures the mechanical balance when the water receiving tank swings, reducing the shaking or jamming caused by uneven stress; the T-shaped structure simplifies the installation process, making the overall device more compact and stable, facilitating later maintenance and repair, improving the reliability of the long-term operation of the device, and reducing the failure probability caused by unstable structure.

[0027] 9. The sewage treatment system integrates a sewer dredging device to treat the sewage from toilets, kitchens, and bathrooms in different zones. According to the characteristics of sewage from different sources, classification purification is achieved through the first treatment tank and the second treatment tank, improving the treatment efficiency; at the same time, the dredging device is applied to the sewer pipes in the kitchen and bathroom to actively prevent pipe blockage, organically combining the two functions of "sewage purification" and "pipe maintenance", constructing a more perfect sewage treatment system, and enhancing the practicality of the system.

[0028] 10. The first treatment tank utilizes the height difference between the tank bodies (the high and low design of the inlet and outlet of the connecting pipe), and with the help of the gravity of the water flow, the sewage is gradually ripened and precipitated, and the treatment process can be promoted without additional power; the sedimentation tank and the wetland tank of the second treatment tank cooperate with the U-shaped pipe, and the communication design between the sedimentation tank and the sedimentation tank constructs a scientific sewage purification path: by optimizing the physical structure to optimize the sewage flow sequence, multiple treatments such as impurity precipitation and biological purification are realized, ensuring the sewage purification effect and improving the sewage treatment quality and efficiency of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the sewage treatment system in the present invention.

[0030] Figure 2 It is a schematic structural diagram of the first treatment tank in the present invention.

[0031] Figure 3 It is a schematic structural diagram of the second treatment tank in the present invention.

[0032] Figure 4 It is a schematic structural diagram of the dredging device in the present invention.

[0033] Figure 5 It is a schematic assembly structural diagram of the cleaning rod and the sewer pipe in the present invention.

[0034] In the figure: 1. first treatment tank; 11. first maturation tank; 12. second maturation tank; 13. sedimentation tank; 14. first connecting pipe; 15. second connecting pipe; 16. third connecting pipe; 17. toilet drain pipe; 2. second treatment tank; 21. sedimentation tank; 22. wetland tank; 23. U-shaped pipe; 24. main outlet pipe; 25. kitchen drain pipe; 26. bathroom drain pipe; 27. vertical pipe; 271. avoidance trough; 28. horizontal pipe; 281. horizontal trough; 3. drain pipe dredging device; 31. base shaft; 32. seesaw; 33. water receiving trough; 331. water retaining plate; 332. U-shaped plate; 34. cleaning rod; 341. horizontal rod; 342. vertical rod; 35. reference rod; 36. connecting rod; 37. scraper. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 5 , gives the specific composition of the sewer dredging device and sewage treatment system. Figures 1 to 3 As shown, the sewage treatment system includes a first treatment tank 1 for purifying toilet sewage and a second treatment tank 2 for purifying kitchen sewage and bathroom sewage at the same time. The first treatment tank 1 and the second treatment tank 2 are both rectangular as a whole, and the first treatment tank 1 includes three sub-tanks, and the second treatment tank 2 includes two sub-tanks. The three sub-tanks of the first treatment tank 1 are a first maturation tank 11, a second maturation tank 12 and a sedimentation tank 13 which are sequentially connected and arranged along the direction of water flow. The two sub-tanks of the second treatment tank 2 are a sedimentation tank 21 and a wetland tank 22 which are sequentially arranged along the direction of water flow.

[0037] A toilet drain pipe 17 is installed at the water inlet of the first maturation tank 11, and the sewage generated in the toilet flows into the first maturation tank 11 along the toilet drain pipe 17. The first maturation tank 11 and the second maturation tank 12 are connected to each other through a gradually raised first connecting pipe 14, so that the treated sewage flows into the second maturation tank 12. The second maturation tank 12 and the sedimentation tank 13 are connected to each other through a gradually raised second connecting pipe 15.

[0038] The first maturation tank 11 has a volume ratio of 2:1, which is twice the volume of the second maturation tank 12, forming a primary hydrolysis acidification environment, and decomposing large molecular organic matter into small molecular substances through anaerobic microorganisms.

[0039] The second maturation tank 12 further converts the remaining organic matter into harmless substances through facultative / aerobic microbial action, creating conditions for further sedimentation in the subsequent sedimentation tank 13.

[0040] The first connecting pipe between the two maturation tanks adopts a "low-in and high-out" structure, effectively intercepting fecal residues and fecal skins. Similarly, a second connecting pipe 15 is used between the second maturation tank 12 and the sedimentation tank 13, which can further intercept fecal residues and fecal skins. Through two-stage sedimentation separation, more than 90% of the solid substances are settled during the maturation stage, avoiding entering the subsequent second treatment tank 2. The volume ratio of the two maturation tanks to the sedimentation tank 13 is 2 + 1:3, forming a stable hydraulic retention time to adapt to the fluctuations in the quality and quantity of rural sewage, ensuring the stable inlet load of the subsequent second treatment tank 2.

[0041] The kitchen sewer pipe 25 and the bathroom sewer pipe 26 are installed in the sedimentation tank 21, and the sedimentation tank 21 and the wetland tank 22 are connected to each other through a U-shaped pipe 23 with an opening downward. The sedimentation tank 13 and the sedimentation tank 21 are connected to each other through a third connecting pipe 16. A main outlet pipe 24 is installed at the outlet of the wetland tank 22, and the sewage after multiple treatments flows out from the main outlet pipe 24.

[0042] In the sedimentation tank 21, solid substances such as suspended matters and food residues in the sewage are removed by static sedimentation, avoiding clogging of the subsequent wetland tank 22. Using the water intake design in the middle of the U-shaped pipe 23, the upper grease layer and the lower sediment layer are isolated, and only the middle-layer sewage is allowed to enter the wetland tank 22.

[0043] The wetland tank 22 achieves advanced treatment through a composite ecosystem. A gravel layer with a thickness of 15 - 20 cm is laid at the bottom of the wetland tank 22 to form a filtering medium, which can intercept fine suspended matters. The woven bag layer in the wetland tank 22 provides an attachment carrier for microorganisms, promoting the aerobic decomposition of organic matter. Aquatic plants such as cannas planted in the wetland tank 22 absorb nutrients such as nitrogen, phosphorus, and potassium through their roots. The soil covering layer covering the plant roots provides a substrate for plant growth, forming a complete ecological purification chain. The sedimentation tank 21 and the wetland tank 22 are connected through the U-shaped pipe 23, which not only prevents impurities in the sedimentation tank 21 from entering the wetland tank 22 but also ensures that the bottom filler layer of the wetland tank 22 fully exerts its adsorption effect. This two-stage structure achieves the dual treatment effect of "physical sedimentation + biological purification", and finally realizes resource utilization through the landscape design of aquatic plants.

[0044] As Figure 4 and Figure 5 shown, the sewer pipe dredging device 3 of the present invention is installed between the kitchen sewer pipe 25 and the bathroom sewer pipe 26 to dredge the two. Both the kitchen sewer pipe 25 and the bathroom sewer pipe 26 are L-shaped sewer pipes, with their vertical pipes 27 arranged vertically and their horizontal pipes 28 arranged horizontally. The sewer pipe dredging device 3 is installed between the two parallel horizontal pipes 28.

[0045] The sewer pipe dredging device 3 includes a base shaft 31 fixedly mounted on the wall and arranged horizontally. The base shaft 31 and the transverse pipe 28 are parallel to each other. The base shaft 31 itself does not rotate, but serves as a support shaft for the rotation of the seesaw 32. The seesaw 32 is rotatably mounted on the base shaft 31. The seesaw 32 is a symmetrical part, and the lengths extending to both sides of the base shaft 31 are the same. The two ends of the seesaw 32 are respectively installed with a water receiving trough 33 that can receive the sewage flowing out of the corresponding transverse pipe 28. The water receiving trough 33 is semicircular, and its axis is arranged horizontally, and is located on the falling trajectory of the water flow of the corresponding transverse pipe 28, so as to receive the sewage.

[0046] One end of the two water receiving grooves 33 close to the horizontal pipe 28 is a water outlet end for the sewage received in the groove, and the other end is a water retaining end for blocking the sewage flowing down from the horizontal pipe 28. The water retaining end is installed with a water retaining plate 331 to block the sewage flushed down by the horizontal pipe 28, so that the water receiving grooves 33 can store a certain amount of water in a short time to make it sink and press up the other water receiving groove 33, and then the sewage flows out from the water outlet end, the weight is reduced, and it rises again, so that the two water receiving grooves 33 can swing up and down alternately under the impact of the sewage flowing out alternately from the two horizontal pipes 28.

[0047] A U-shaped plate 332 is clamped at the water outlet end of the water receiving trough 33, and the U-shaped plate 332 opens downward. The cleaning rod 34 is fixedly installed at the highest point of the U-shaped plate 332, and the cleaning rod 34 can make a beating action to beat the inner bottom surface of the corresponding horizontal pipe 28 as the two water receiving troughs 33 swing up and down alternately. The cleaning rod 34 is L-shaped, and its horizontal rod 341 is inserted in the horizontal pipe 28, and its vertical rod 342 is inserted in the vertical pipe 27; the vertical pipe 27 is provided with a vertically arranged avoidance groove 271 on the inner pipe wall near the water receiving trough 33, and the vertical rod 342 is slidably inserted in the avoidance groove 271 to avoid the sewage falling in the vertical pipe 27. The cleaning rod 34 is designed to be L-shaped, the horizontal rod 341 is responsible for the patting and cleaning inside the horizontal pipe 28, and the vertical rod 342 is "peaked" with the sewage in the vertical pipe 27 through the avoidance groove 271, which not only ensures that the cleaning rod 34 swings with the water receiving groove 33 to complete the cleaning task of the horizontal pipe 28, but also makes room for the sewage falling in the vertical pipe 27 through the avoidance groove 271, so as to avoid the vertical rod 342 from obstructing normal drainage and hanging solid objects in the sewage, so as to achieve the mutual non-interference of the "unblocking" and "drainage" processes, and make the device more compatible in function. A horizontal groove 281 is provided on the inner top surface of the horizontal pipe 28 for the horizontal rod 341 to be embedded when it is at the highest point, and the horizontal groove 281 and the avoidance groove 271 are connected to each other to form an L-shaped hidden groove, that is, in the non-working state, the cleaning rod 34 is completely hidden, and the sewage is not interfered with by the structure when flowing through the horizontal pipe 28, ensuring that the drainage path is unobstructed, optimizing the space utilization rate in the pipeline, and improving the overall fluency of the system.

[0048] The scraper 37 symmetrically installed inside the water receiving tank 33 adopts a double-hinged three-bar linkage design, and a spatial transmission system is composed of a reference rod 35, a connecting rod 36 and an arc-shaped scraper 37. The reference rod 35 is a stainless steel round rod, horizontally fixed on the center line of the two water receiving tanks 33 and perpendicular to the base shaft 31, and its two ends are respectively hinged to the scrapers 37 on both sides through the connecting rod 36. The scraper 37 is made of stainless steel, and the fitting error with the inner wall of the water receiving tank 33 is ≤0.5 mm. A 15° edge is designed at the edge of the scraper 37 and a 0.1 mm WC-Co wear-resistant coating is sprayed. When the water receiving tank 33 swings up and down under the impact of sewage, the connecting rod 36 converts the rotational motion into a reciprocating linear motion of the scraper 37 along the length direction of the water receiving tank 33, and the scraping frequency is synchronized with the swinging frequency of the water receiving tank 33 through the double-hinged three-bar mechanism. The scraper 37 cooperates with the curled edge of the water receiving tank 33 to achieve 100% coverage scraping of the inner wall of the water receiving tank 33 and automatically discharge the scraping objects.

[0049] When sewage flows into the corresponding water receiving tank 33 from the horizontal pipe 28, the gravitational moment generated by the water flow impact drives the water receiving tank 33 to swing around the base shaft 31, driving the L-shaped cleaning rod 34 to move synchronously. That is, the cross bar 341 of the cleaning rod 34 is embedded in the inner bottom surface of the horizontal pipe 28 and beats along the swinging track, and the solid impurities attached to the pipe wall are removed by periodic beating; the vertical rod 342 slides along the avoidance groove 271 on the inner wall of the vertical pipe 27, which not only avoids hindering the sewage from falling but also ensures the stability of the beating action. At the same time, the swing of the water receiving tank 33 drives the scraper 37 system through the double-hinged three-bar mechanism: the connecting rods 36 fixed at both ends of the reference rod 35 convert the rotational motion of the water receiving tank 33 into a linear reciprocating motion of the scraper 37, so that the scraper 37 fits the groove wall for scraping, and the edge blade cooperates with the curled edge diversion groove to automatically discharge the scraping objects. The cleaning rod 34 is stored in the L-shaped hidden groove on the top surface of the horizontal pipe 28 in the non-working state to avoid interfering with the water flow; the scraper 37 is connected to the connecting rod 36 through a spherical hinge, which can adapt to a certain spatial angle change, and cooperate with the 0.1 mm WC-Co wear-resistant coating to achieve efficient wear-resistant scraping. Both are self-driven by the sewage kinetic energy to achieve double cleaning of the inner wall of the horizontal pipe 28 and the water receiving tank 33.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A sewer pipe dredging device, characterized in that: The invention comprises a base shaft (31) installed between two transverse pipes (28) arranged side by side, the base shaft (31) and the transverse pipe (28) being parallel to each other; a seesaw (32) being rotatably installed on the base shaft (31), and water receiving grooves (33) for receiving sewage flowing out of the corresponding transverse pipe (28) being installed at both ends of the seesaw (32); the groove length directions of the two water receiving grooves (33) are parallel to the axial direction of the corresponding transverse pipe (28), and the ends of the two water receiving grooves (33) close to the transverse pipe (28) are for receiving sewage flowing out of the corresponding transverse pipe (28). The water receiving trough (33) has a water outlet end for receiving sewage, and the other end is a water retaining end for retaining sewage flowing down from the transverse pipe (28); the two water receiving troughs (33) can swing up and down alternately under the impact of sewage flowing out alternately from the two transverse pipes (28), and the two water receiving troughs (33) are both provided with cleaning rods (34) inserted in the corresponding transverse pipes (28), and the two cleaning rods (34) can perform a beating action to beat the inner bottom surface of the corresponding transverse pipe (28) as the two water receiving troughs (33) swing up and down alternately.

2. A sewer pipe dredging device according to claim 1, characterized in that: The cleaning rod (34) is L-shaped, with its horizontal rod (341) inserted into the horizontal pipe (28), and its vertical rod (342) inserted into the vertical pipe (27); a vertically arranged avoidance groove (271) is provided on the inner pipe wall of the vertical pipe (27) close to the water receiving groove (33), and the vertical rod (342) is slidably inserted into the avoidance groove (271) to avoid the sewage falling in the vertical pipe (27).

3. A sewer pipe dredging device according to claim 2, characterized in that: A transverse groove (281) is provided on the inner top surface of the transverse tube (28) for the transverse rod (341) to be embedded when the transverse rod (341) is at the highest point, and the transverse groove (281) and the avoidance groove (271) are connected to each other to form an L-shaped hidden groove.

4. A sewer pipe dredging device according to claim 3, characterized in that: The transition between the vertical rod (342) and the horizontal rod (341) is an arc-shaped transition.

5. A sewer pipe dredging device according to claim 4, characterized in that: A U-shaped plate (332) is clamped at the water outlet end of the water receiving trough (33), and the cleaning rod (34) is fixedly mounted at the highest point of the U-shaped plate (332).

6. A sewer pipe dredging device according to any one of claims 1 to 5, characterized in that: A scraper (37) is installed in each of the two water receiving grooves (33) to slide and scrape the groove wall of the water receiving groove (33) along the groove length direction; a fixed horizontally arranged reference rod (35) is installed in the middle of the two water receiving grooves (33), and the length direction of the reference rod (35) is perpendicular to the groove length direction of the water receiving groove (33); the two rod ends of the reference rod (35) are respectively hinged to the scraper (37) near the corresponding rod end through a connecting rod (36) to form a double-hinged three-bar mechanism; the two scrapers (37) can perform a reciprocating scraping action to scrape the water receiving grooves (33) under the traction of the two connecting rods (36) as the two water receiving grooves (33) swing up and down alternately.

7. A sewer pipe dredging device according to claim 6, characterized in that: Both sides of the water receiving trough (33) are formed with inwardly bent curling edges, and both ends of an arc-shaped scraper (37) fitted in the water receiving trough (33) are respectively abutted against the inner side surfaces of the two curling edges.

8. A sewer pipe dredging device according to claim 7, characterized in that: The base shaft (31) is fixedly mounted on the wall between the two transverse tubes (28), and the axis of the base shaft (31) is located in the symmetry plane of the two transverse tubes (28); the reference rod (35) is fixed to the other axial end of the base shaft (31), and the two cooperate to form a T-shaped rod.

9. A sewage treatment system, the sewage treatment system using a sewer pipe dredging device as claimed in claim 8, characterized in that: The invention comprises a first treatment pool (1) for purifying toilet sewage and a second treatment pool (2) for purifying kitchen sewage and bathroom sewage at the same time; the water inlet of the first treatment pool (1) is connected to a toilet drain pipe (17), and the water outlet of the first treatment pool (1) is connected to the water inlet of the second treatment pool (2); the water inlet of the second treatment pool (2) is also connected to an L-shaped kitchen drain pipe (25) and an L-shaped bathroom drain pipe (26), and the kitchen drain pipe (25) and the bathroom drain pipe (26) are arranged side by side; the drain pipe dredging device (3) is installed between the kitchen drain pipe (25) and the bathroom drain pipe (26) to dredge the two.

10. A sewage treatment system according to claim 9, characterized in that: The first treatment tank (1) comprises a first maturation tank (11), a second maturation tank (12) and a sedimentation tank (13) which are sequentially arranged and connected along a water flow direction; the first maturation tank (11) and the second maturation tank (12) are connected via a first connecting pipe (14), and the height of the first connecting pipe (14) located at the water inlet of the first maturation tank (11) is lower than the height of the first connecting pipe (14) located at the water outlet of the second maturation tank (12); the second maturation tank (12) and the sedimentation tank (13) are connected via a second connecting pipe (15), and the second connecting pipe (15) is located at the water outlet of the second maturation tank (12). ) is lower than the height of the water outlet of the second connecting pipe (15) in the sedimentation tank (13); the second treatment tank (2) comprises a sedimentation tank (21) and a wetland tank (22) arranged in sequence along the water flow direction, and a kitchen drain pipe (25) and a bathroom drain pipe (26) are installed in the sedimentation tank (21); the sedimentation tank (21) and the wetland tank (22) are connected to each other through a U-shaped pipe (23) with an opening facing downward; the sedimentation tank (13) is connected to the sedimentation tank (21) through a third connecting pipe (16), and a main water outlet pipe (24) is installed at the water outlet of the wetland tank (22).

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