An automatic water treatment device for drainage pipes

Abstract

The present invention discloses an automatic water treatment device for drainage pipes, which relates to the technical field of water treatment for drainage pipes and includes: a rotary weir plate, a seal, a siphon drainage pipe, a medicine storage device, and a push-suction type medicine feeder. The rotary weir plate and the seal cooperate to intercept the sewage in the drainage pipe. The siphon drainage pipe quickly sucks the sewage and alluvium upstream of the rotary weir plate to the downstream of the rotary weir plate. The rotary weir plate and the medicine storage device cooperate to realize the automatic rotation and reset of the rotary weir plate. The medicine storage device and the push-suction type medicine feeder cooperate, and the push-suction type medicine feeder can adjust the dosage of medicine according to the water flow rate of the drainage pipe. For the separate stormwater pipes with mixed sewage, the present invention can prevent the formation of sediments in the drainage pipe during the dry season and automatically and reasonably dose the water flow during the rainy season, so that the mixing ratio of the medicine and the rainwater remains stable.

Description

Technical Field

[0001] The present invention relates to the technical field of drainage pipeline water treatment, and specifically relates to an automatic drainage pipeline water treatment device. Background Art

[0002] With the continuous acceleration of urban construction in China, drainage pipelines are being built longer and more sewage treatment plants are being constructed, resulting in a continuous improvement in the urban sewage treatment capacity of China. Drainage pipelines are an important part of the drainage system and also an important passage for the urban water cycle, mainly including rainwater and sewage pipelines under the separate sewer system, as well as combined sewer pipelines. Among them, the separate sewer system is a system that discharges domestic sewage, industrial wastewater, and rainwater separately in two or more independent pipelines; the combined sewer system is a drainage system that mixes domestic sewage, industrial wastewater, and rainwater and discharges them in the same channel. In recent years, relatively complete separate sewer pipeline systems have been formed in many large cities in China. However, due to reasons such as the lag in the construction of the sewage system behind the rainwater system and the failure to synchronously implement the connection of pollution sources to the pipeline network, some sewage that should have been connected to the sewage pipeline network has been mixed into the rainwater pipeline network, resulting in the fact that some separate sewer systems do not achieve true rain-sewage separation.

[0003] During the dry season, when the sewage in the drainage pipeline is in a state of low flow and low velocity, due to insufficient hydraulic scouring, particulate matter in the sewage will, under the action of gravity, accumulate a large amount of organic matter at the bottom of the pipeline to form sediments. When the sewage in the drainage pipeline remains in a low-velocity state for a long time, the organic matter components in the bottom sediments will ferment due to long-term lack of oxygen. On the one hand, it will make the sediments become black and smelly, and on the other hand, it will further increase the viscosity of the sediments, making it more difficult to scour the bottom sediments. The sediments will become black and smelly after staying in the drainage pipeline for a long time. When it rains, the black and smelly sediments will enter the natural water body with the rainwater, polluting the water resources. Therefore, for the separate sewer pipeline with mixed rainwater, the sewage sediments in the drainage pipeline will cause black and smelly pollution of the water body.

[0004] During the rainy season, the sources of pollutants in the rainwater discharged during rainy days are extensive, with high concentrations and a wide variety of types. In addition to being mixed with sewage and the deposition pollution in its pipelines, the runoff rainwater also carries a large amount of pollutants, including conventional pollutants such as ammonia nitrogen and COD, as well as new pollutants such as antibiotics and endocrine disruptors, and exists in the forms of particulate matter, colloids, and dissolved organic matter. If the rainwater is directly discharged into the water body without treatment, it may cause the pollutants to exceed the environmental capacity of the water body in a short time, leading to water body pollution. Therefore, it is necessary to treat the rainwater pipeline to reduce pollution, that is, a storage tank is set at the end of the renovated rainwater pipeline to collect the rainwater into the storage tank, and then discharge it after removing pollutants through physical sedimentation. In-situ coagulation and flocculation, as a rainwater treatment method, can make full use of the physical space of the rainwater pipeline and the turbulent flow conditions of the incoming water to achieve the full mixing of the coagulant, flocculant, and the incoming water of the rainwater pipeline. Currently, artificial dosing of coagulant and flocculant is usually used, and the staff cannot control the dosing quantity according to the actual flow rate of the rainwater in the drainage pipeline, resulting in a non-standard mixing ratio of the coagulant, flocculant, and rainwater. Summary of the Invention

[0005] To solve the problems in the prior art that the separate rainwater pipelines with mixed sewage accumulate sewage sediments during the dry season, causing black and odorous water pollution, and the mixing ratio of the medicament and rainwater is not standard during the rainy season, the present invention provides an automatic water treatment device for drainage pipelines, including:

[0006] A rotating weir plate, the rotating weir plate includes a first rotating shaft, a prefabricated torsion spring group, and a segmental baffle. One end of the first rotating shaft is connected to the prefabricated torsion spring group, and the prefabricated torsion spring group is connected to the top of the drainage pipeline and provides prefabricated torsion for the first rotating shaft; the other end of the first rotating shaft is connected to the baffle and coincides with the central axis of the baffle, and the bottom end of the baffle is in clearance fit with the inner wall of the drainage pipeline;

[0007] A seal, the seal is arc-shaped and connected to the inner wall of the drainage pipeline, and the seal is arranged on both sides of the rotating weir plate to limit the rotating weir plate and prevent water flow through;

[0008] A siphon drainage pipe, the inlet end of the siphon drainage pipe is arranged upstream of the rotating weir plate and communicated with the bottom of the inner cavity of the drainage pipeline, and the outlet end of the siphon drainage pipe is arranged downstream of the rotating weir plate and communicated with the side wall of the drainage pipeline;

[0009] Medicine storage device, the medicine storage device is arranged at the top of the baffle plate, and a direction correcting member is arranged below the medicine storage device for adjusting the orientation of the medicine storage device; the medicine storage device is provided with a medicine storage cavity, and the medicine storage cavity is communicated with an external medicine delivery member through a medicine delivery pipe; the medicine storage device is provided with a through water trough along the water flow direction, the medicine storage device is provided with a buffer cavity, and the buffer cavity has only one end open and is communicated with the water trough; the medicine storage device is rotatably connected with a water wheel, and the extending direction of the central axis of the water wheel is perpendicular to the water flow direction; one end of the water wheel is located in the water trough, and the other end is located in the buffer cavity;

[0010] Push-suction type medicine adding device, the push-suction type medicine adding device is connected with the water wheel and is used for adding medicine into the drainage pipe.

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

[0012] The push-suction type medicine adding device includes a medicine adding pipe and a medicine adding rod. The inlet end of the medicine adding pipe is communicated with the medicine storage cavity, and the outlet end is intermittently communicated with the drainage pipe; one end of the medicine adding rod is connected with the second rotating shaft of the water wheel through a rotating member, and the other end is slidably matched with the inner wall of the medicine adding pipe and reciprocates in the medicine adding pipe. The rotating member is used for converting the mechanical energy of the second rotating shaft into the kinetic energy of the medicine adding rod.

[0013] The rotating member includes a turntable and a connecting rod. The turntable is connected with the second rotating shaft and is coaxial with the second rotating shaft. One end of the connecting rod is movably connected with the edge of the turntable, and the other end is movably connected with the medicine adding rod.

[0014] The sealing member includes a first sealing member and a second sealing member distributed on both sides of the first rotating shaft. The first sealing member is arranged on the upstream side of the rotating weir plate to prevent one end of the baffle plate from rotating upstream due to the prefabricated torsion and prevent water flow through. The second sealing member is arranged on the downstream side of the rotating weir plate to prevent the other end of the baffle plate from rotating downstream and prevent water flow through.

[0015] The medicine delivery pipe is connected with the rotating weir plate. The medicine storage device is obliquely arranged on the baffle plate through the medicine delivery pipe. The inclination direction of the medicine delivery pipe faces the upstream of the baffle plate. The medicine delivery pipe is provided with a torsion elimination component; the medicine delivery pipe includes a first medicine delivery pipe and a second medicine delivery pipe, and the first medicine delivery pipe, the torsion elimination component and the second medicine delivery pipe are sequentially communicated;

[0016] The torsion elimination component includes a first component and a second component. The second component is provided with a medicine delivery cavity. One end of the first component is matched with the inner wall of the medicine delivery cavity through a ball, and the other end penetrates through the medicine delivery cavity; the first medicine delivery pipe penetrates through the first component and is communicated with the medicine delivery cavity, and the second medicine delivery pipe penetrates through the second component and is communicated with the medicine delivery cavity;

[0017] The alignment member includes an aligned plate and an alignment shaft that are connected, and the areas of the aligned plates on both sides of the alignment shaft are different.

[0018] The inlet end of the siphon drain pipe is provided with a cyclone-like device, which includes a top plate and a bottom plate. The bottom plate is provided with a water outlet vertically penetrating therethrough, and the water outlet is communicated with the siphon drain pipe. A flow guide plate is arranged between the top plate and the bottom plate, and a flow guide channel is formed between two adjacent flow guide plates.

[0019] One end of the medicine adding rod located inside the medicine adding pipe is provided with a liquid outlet penetrating along the moving direction of the medicine adding rod and is provided with a blocking cap hinged to the medicine adding rod. The blocking cap is used for intermittently closing the liquid outlet; the outlet end of the medicine adding pipe is provided with a pipe cap hinged to the medicine adding pipe, and the pipe cap is used for intermittently closing the medicine adding pipe.

[0020] It further includes a ball blocking assembly, and the ball blocking assembly is arranged in the vertical section of the medicine adding pipe. The ball blocking assembly includes a floating ball, a sliding rod, a sealing ball and a sealing ring. The sliding rod vertically penetrates the medicine adding pipe and is in sealed sliding connection with the medicine adding pipe. The top end of the sliding rod is connected to the floating ball, and the bottom end is connected to the sealing ball. The sealing ball is located inside the medicine adding pipe and is provided with a counterweight. The sealing ring is arranged inside the medicine adding pipe. When the sealing ball is at the lowest position, the sealing ball is in sealed cooperation with the sealing ring.

[0021] An exhaust valve is arranged at the upper end of the medicine storage instrument, and a filter screen is arranged at the inlet end of the water overflow tank. The filter screen is used for filtering the water flowing through the water overflow tank.

[0022] The water wheel is provided with a plurality of blades.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] The present invention intercepts low-flow and small-volume sewage in the drainage pipe by setting a prefabricated torsion spring group at the top of the first rotating shaft and setting seals on both sides of the baffle for limiting and sealing, so that the baffle is perpendicular to the sewage flow direction. By setting a siphon drainage pipe to connect the upstream and downstream of the baffle, when the liquid level height in the upstream reaches the siphon water level of the siphon drainage pipe, that is, the liquid level height reaches the top of the siphon drainage pipe, a siphon phenomenon occurs in the siphon drainage pipe, quickly sucking the sewage and alluvial deposits at the bottom of the drainage pipe to the downstream of the baffle to prevent the formation of sediments in the drainage pipe. During the rainy season, when the sewage flow is large and the flow rate is fast, and the water level upstream of the baffle exceeds the top of the baffle, the cross-sectional areas of the water flows in the vertical direction on both sides of the bottom end of the first rotating shaft are different, and a torsion force is generated at the bottom end of the first rotating shaft. As the water level rises, the torsion force gradually increases. When the generated torsion force exceeds the prefabricated torsion force of the prefabricated spring group, the baffle twists around the first rotating shaft, and the rotating weir plate does not affect the drainage of the drainage pipe. At the same time, the medicine storage device rotates relative to the baffle, so that the opening direction of the water passing trough is consistent with the water flow direction. The water flow passes through the water passing trough and drives the water wheel to rotate. The greater the water flow velocity, the greater the rotation speed of the water wheel, and the greater the dosage of the added medicine. The device can automatically adjust the dosage of the added medicine according to the flow rate in the drainage pipe, so that the mixing ratio of the medicine and rainwater is maintained stable. When the water level gradually decreases, the torsion force at the bottom of the rotating weir plate gradually decreases, and the rotating weir plate starts to rotate due to the prefabricated torsion force, completing the automatic reset of the device. The present invention has the characteristics of simplicity, reliability, economy and environmental protection. Only simple transformation of the existing rainwater pipe is required to prevent the formation of sediments in the drainage pipe and automatically and reasonably add medicine to the water flow during the rainy season, which can ensure the tightness, uniformity and unidirectionality of the medicine addition. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a top view when the rotating weir plate is closed;

[0028] Figure 3 It is a top view when the rotating weir plate is opened;

[0029] Figure 4 It is a schematic cross-sectional view when the medicine storage device is in a certain state;

[0030] Figure 5 It is Figure 4Schematic diagram in the A-A direction;

[0031] Figure 6 is Figure 4 Schematic diagram in the B-B direction;

[0032] Figure 7 is Figure 4 Schematic diagram in the C-C direction;

[0033] Figure 8 is Figure 6 Schematic diagram in the D-D direction;

[0034] Figure 9 is Figure 6 Schematic diagram in the D-D direction in another state;

[0035] Figure 10 is Figure 9 Enlarged view at E in the figure;

[0036] Figure 11 is Figure 9 Enlarged view at F in the figure;

[0037] Figure 12 Schematic sectional view of the torsion elimination component;

[0038] Figure 13 is Figure 12 Schematic diagram in the G-G direction;

[0039] Figure 14 is Figure 12 Schematic diagram in the H-H direction;

[0040] Figure 15 Schematic diagram of the alignment part;

[0041] Figure 16 Schematic diagram of the flow deflector;

[0042] Figure 17 Schematic partial sectional view of the cyclone-like device;

[0043] Figure 18 Schematic diagram of the flow deflector in another embodiment;

[0044] Figure 19 Schematic diagram of the siphon drainage pipeline route.

[0045] Reference numerals:

[0046] 11. Drainage pipe; 12. Rotating weir plate; 121. First rotating shaft; 122. Prefabricated torsion spring group; 123. Baffle; 13. Seal; 131. First seal; 132. Second seal; 14. Siphon drainage pipe; 15. Medicine storage instrument; 151. Medicine storage cavity; 152. Water overflow tank; 153. Buffer cavity; 154. Water wheel; 16. Alignment member; 161. Alignment plate; 162. Alignment shaft; 17. Medicine delivery pipe; 171. First medicine delivery pipe; 172. Second medicine delivery pipe; 18. Push-suction type medicine adding device; 181. Medicine adding pipe; 1811. Pipe cap; 182. Medicine adding rod; 1821. Liquid outlet; 1822. Blocking cap; 183. Rotating member; 1831. Turntable; 1832. Connecting rod; 19. Torsion elimination assembly; 191. First component; 192. Second component; 1921. Medicine delivery cavity; 20. Cyclone-like device; 201. Top plate; 202. Bottom plate; 203. Flow guiding plate; 204. Flow guiding channel; 21. Ball blocking assembly; 211. Floating ball; 212. Sliding rod; 213. Sealing ball; 214. Sealing ring; 215. Counterweight; 22. Exhaust valve; 23. Filter screen; 24. Siphon water level; 25. Torsion water level. Detailed implementation mode

[0047] The following further describes in detail the implementation mode of the present invention in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention. Without contradiction, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples.

[0048] Figure 1 Illustrates the overall structural schematic diagram of the present invention. Figure 2 Illustrates the top view when the rotating weir plate 12 is closed (the arrow direction in the figure indicates the water flow direction). Figure 3 Illustrates the top view when the rotating weir plate 12 is opened. Figure 4 Illustrates the sectional schematic diagram of the medicine storage instrument 15. Figure 5 Illustrates Figure 4 The schematic diagram in the A-A direction in (the arrow direction in the figure indicates the water flow direction). Figure 6 Illustrates Figure 4 The schematic diagram in the B-B direction in (the arrow direction in the figure indicates the water flow direction). Figure 7 Illustrates Figure 4 The schematic diagram in the C-C direction in, as Figures 1-7As shown in the figure, the automatic water treatment device for the drainage pipe 11 in this embodiment includes a rotary weir plate 12, a seal 13, a siphon drainage pipe 14, a chemical storage instrument 15, and a push-suction chemical feeder 18. The rotary weir plate 12 includes a first rotating shaft 121, a prefabricated torsion spring group 122, and a segmental baffle 123. One end of the first rotating shaft 121 is connected to the prefabricated torsion spring group 122. The prefabricated torsion spring group 122 is connected to the top end of the drainage pipe 11 and provides prefabricated torsion for the first rotating shaft 121. The other end of the first rotating shaft 121 is connected to the baffle 123 and coincides with the central axis of the baffle 123. The baffle 123 can rotate around the first rotating shaft 121 as the central axis. The bottom end of the baffle 123 is arc-shaped and is in clearance fit with the inner wall of the drainage pipe 11. The prefabricated torsion of the prefabricated torsion spring group 122 causes the baffle 123 to rotate. When the water level in the drainage pipe 11 is lower than the top end of the baffle 123, since the cross-sectional areas of the baffle 123 on both sides of the first rotating shaft 121 corresponding to the water flow in the vertical direction are equal, the torsional forces of the baffle 123 on both sides are the same.

[0049] As Figure 1 and Figure 2 shown in the figure, the seal 13 is arc-shaped and is connected to the inner wall of the drainage pipe 11. The seal 13 is provided on both sides of the rotary weir plate 12 to limit the rotary weir plate 12 and prevent water flow through. The seals 13 on both sides can limit the rotation direction of the baffle 123. The baffle 123 abuts against the seal 13, and the seal 13 can limit the water flow passing through the gap between the baffle 123 and the drainage pipe 11.

[0050] As Figure 1 , Figure 2 and Figure 19 shown in the figure, the inlet end of the siphon drainage pipe 14 is provided upstream of the rotary weir plate 12 and is communicated with the bottom of the inner cavity of the drainage pipe 11. The outlet end of the siphon drainage pipe 14 is provided downstream of the rotary weir plate 12 and is communicated with the side wall of the drainage pipe 11. The siphon drainage pipe 14 is in an inverted U shape. When the liquid in the siphon drainage pipe 14 passes over the highest point (i.e., the siphon water level 24) and falls due to gravity, a siphon phenomenon will occur in the siphon drainage pipe 14, and the sediment upstream of the rotary weir plate 12 will be quickly transported downstream of the rotary weir plate 12.

[0051] As Figure 1 , Figure 4 , Figure 5The medicine storage device 15 is provided at the top of the baffle 123. A direction correcting member 16 is provided below the medicine storage device 15 for adjusting the orientation of the medicine storage device 15. The medicine storage device 15 is located on one side of the first rotating shaft 121, and on this side, the baffle 123 will rotate upstream due to the prefabricated torsion. When the water level in the drainage pipe 11 is higher than the baffle 123, since one side of the baffle 123 is connected to the medicine storage device 15, the cross-sectional area of this side of the baffle 123 and the medicine storage device 15 in the direction perpendicular to the water flow is larger than that of the other side of the baffle 123, generating torsion. The medicine storage device 15 is provided with a medicine storage chamber 151, and the medicine storage chamber 151 is communicated with an external medicine delivery member (not shown in the figure) through a medicine delivery pipe 17. The external medicine delivery member can deliver medicine to the medicine storage chamber 151 through the medicine delivery pipe 17. The medicine storage device 15 is provided with a through water tank 152 along the water flow direction, and the water flow in the drainage pipe 11 can pass through the water tank 152. The direction correcting device can adjust the orientation of the medicine storage device 15 so that the length extension direction of the water tank 152 is consistent with the water flow direction. The medicine storage device 15 is further provided with a buffer chamber 153. Only one end of the buffer chamber 153 is open, and the opening faces the water tank 152. The buffer chamber 153 is communicated with the water tank 152 through this opening. The water wheel 154 is rotationally connected to the medicine storage device 15 through a second rotating shaft. The water wheel 154 rotates synchronously with the second rotating shaft, and the extension direction of the central axis of the water wheel 154 is perpendicular to the water flow direction; one end of the water wheel 154 is located in the water tank 152, and the other end is located in the buffer chamber 153. The flowing water can impact one end of the water wheel 154 in the water tank 152, and one end of the water wheel 154 in the buffer chamber 153 will not be impacted by the flowing water. When the water flow passes through the water tank 152, it can drive the water wheel 154 to rotate. As the flow rate of the water flow in the drainage pipe 11 increases, the flow velocity of the water flow in the water tank 152 becomes faster, and the rotation speed of the water wheel 154 also becomes faster.

[0052] As Figure 6 shown, the push-suction type medicine adding device 18 is connected to the water wheel 154 for adding medicine into the drainage pipe 11. The faster the rotation speed of the water wheel 154, the larger the dosage of the added medicine, and the dosage of the added medicine can be automatically adjusted according to the flow rate in the drainage pipe 11.

[0053] In the present invention, a prefabricated torsion spring group 122 is arranged at the top of the first rotating shaft 121, and seals 13 are arranged on both sides of the baffle 123 for limiting and sealing, so that the baffle 123 is perpendicular to the sewage flow direction, and the sewage with low flow velocity and small flow rate in the drainage pipe 11 is intercepted; a siphon drainage pipe 14 is arranged to connect the upstream and downstream of the baffle 123. When the liquid level height in the upstream reaches the siphon water level 24 of the siphon drainage pipe 14, that is, when the liquid level height reaches the top of the siphon drainage pipe 14, a siphon phenomenon occurs in the siphon drainage pipe 14, and the sewage and alluvial deposits at the bottom of the drainage pipe 11 are quickly sucked to the downstream of the baffle 123 to prevent the formation of sediments in the drainage pipe 11. During the rainy season, the sewage flow rate is large and the flow velocity is fast. When the water level upstream of the baffle 123 exceeds the top of the baffle 123, the cross-sectional areas in the vertical direction of the water flow on both sides of the first rotating shaft 121 are different, and a torsion force is generated at the bottom end of the first rotating shaft 121. As the water level rises, the torsion force gradually increases. When the generated torsion force exceeds the prefabricated torsion force of the prefabricated spring group, the baffle 123 rotates around the first rotating shaft 121, and the rotating weir plate 12 will not affect the drainage of the drainage pipe 11. At the same time, the medicine storage device 15 rotates relative to the baffle 123, so that the opening direction of the water passing trough 152 is consistent with the water flow direction. The water flow passes through the water passing trough 152 and drives the water wheel 154 to rotate. The greater the water flow velocity, the greater the rotation speed of the water wheel 154, and the greater the dosage of the added medicine. The device can automatically adjust the dosage of the added medicine according to the flow rate in the drainage pipe 11, so that the mixing ratio of the medicine and the rainwater is maintained stable. When the water level gradually decreases, the torsion force at the bottom of the rotating weir plate 12 gradually decreases, and the rotating weir plate 12 starts to rotate due to the prefabricated torsion force, completing the automatic reset of the device. The present invention has the characteristics of being simple, reliable, economical and environmentally friendly. Only simple transformation of the existing rainwater pipe is required to prevent the formation of sediments in the drainage pipe 11 and reasonably add medicine to the water flow during the rainy season.

[0054] It should be noted here that the first rotating shaft 121 can be inserted, welded or integrally formed with the baffle 123. The baffle 123 can be coaxially arranged with the drainage pipe 11. Preferably, the water wheel 154 is divided by the central axis, with one end located in the water passing trough 152 and the other end located in the buffer chamber 153. At this time, the efficiency of converting the kinetic energy of the water flow into the mechanical energy of the water wheel 154 is the highest. The external medicine feeding member can be a medicine bottle or a medicine mixing pool on the ground above the drainage pipe 11, and the medicine includes coagulants, flocculants, etc. For a separate rainwater pipe mixed with sewage, auxiliary facilities such as a sedimentation well can be arranged behind this device to collect the sewage back into the sewage pipe.

[0055] According to an embodiment of the present invention, Figure 8 illustrates Figure 6 the schematic diagram in the D-D direction (the arrow direction in the figure indicates the water flow direction), Figure 9 illustrates Figure 6Schematic diagram in the D-D direction in another state. The push-suction type chemical feeder 18 includes a chemical feeding pipe 181 and a chemical feeding rod 182. The inlet end of the chemical feeding pipe 181 is communicated with the medicine storage cavity 151, and the outlet end is intermittently communicated with the drainage pipe 11. One end of the chemical feeding rod 182 is connected to the second rotating shaft of the water wheel 154 through a rotating member 183, and the other end is slidably engaged with the inner wall of the chemical feeding pipe 181 and reciprocates in the chemical feeding pipe 181. The rotating member 183 is used to convert the mechanical energy of the second rotating shaft into the kinetic energy of the chemical feeding rod 182. The reciprocating motion of the chemical feeding rod 182 cooperates with the outlet end of the chemical feeding pipe 181. When the chemical feeding rod 182 pushes the medicine towards the outlet end of the chemical feeding pipe 181, the outlet end is communicated with the drainage pipe 11. When the chemical feeding rod 182 returns to its original position, the medicine refills the chemical feeding pipe 181, and the outlet end of the chemical feeding pipe 181 is closed.

[0056] According to an embodiment of the present invention, as Figure 6 shown, the rotating member 183 includes a turntable 1831 and a connecting rod 1832. The turntable 1831 is connected to the second rotating shaft and is coaxial with the second rotating shaft. One end of the connecting rod 1832 is movably connected to the edge of the turntable 1831, and the other end is movably connected to the chemical feeding rod 182. The connecting rod 1832 can drive the reciprocating suction motion of the chemical feeding rod 182 by using the circular motion of the turntable 1831.

[0057] It should be noted here that the turntable 1831 can be made of steel material. There are raised points at the connection between the turntable 1831 and the connecting rod 1832. The connecting rod 1832 can be connected to the turntable 1831 through a movable rivet, and the connecting rod 1832 can also be connected to the chemical feeding rod 182 through a movable rivet.

[0058] According to an embodiment of the present invention, Figure 10 illustrates Figure 9 the enlarged view at E in Figure 11 illustrates Figure 9 the enlarged view at F in Figures 8-10 shown, one end of the chemical feeding rod 182 located in the chemical feeding pipe 181 is provided with a liquid outlet 1821 penetrating along the moving direction of the chemical feeding rod 182 and is provided with a blocking cap 1822 hinged to the chemical feeding rod 182. The hinged part is located above the liquid outlet 1821. The blocking cap 1822 is used to intermittently close the liquid outlet 1821. The outlet end of the chemical feeding pipe 181 is provided with a pipe cap 1811 hinged to the chemical feeding pipe 181. The pipe cap 1811 is used to intermittently close the chemical feeding pipe 181. The outlet of the chemical feeding pipe 181 is preferably vertically upward. One end of the pipe cap 1811 is hinged to the chemical feeding pipe 181 and is in the upstream. When the medicine moves towards the outlet end of the chemical feeding pipe 181, the pipe cap 1811 is "pushed open" by the medicine and rotates, and the medicine in the chemical feeding pipe 181 enters the drainage pipe 11. When no medicine is being dosed, the pipe cap 1811 rotates and closes the chemical feeding pipe 181 due to the action of gravity and the impact of water flow.

[0059] It should be noted here that the outer wall of this end of the medicine adding rod 182 is preferably in sealed sliding fit with the inner wall of the medicine adding tube 181, and the material is rubber. When the medicine adding rod 182 pushes the medicine to move towards the outlet end of the medicine adding tube 181, the blocking cap 1822 drops due to gravity and uses the medicine at the front end of the medicine adding rod 182 to make the blocking cap 1822 seal the liquid outlet 1821. The front end of the medicine adding rod 182 is the end of the medicine adding rod 182 close to the outlet of the medicine adding tube 181. When the medicine adding rod 182 resets, the pressure at the front end of the medicine adding rod 182 becomes smaller, the blocking cap 1822 unscrews, and the medicine at the rear end of the medicine adding rod 182 enters the front end of the medicine adding rod 182 through the liquid outlet 1821, so that the medicine in the liquid storage cavity fills the medicine adding tube 181, and this cycle is repeated to achieve the delivery of the medicine.

[0060] When adding medicine, the medicine adding rod 182 pushes the medicine to move towards the outlet end of the medicine adding tube 181, the blocking cap 1822 closes, and the pipe cap 1811 opens. The medicine adding rod 182 puts the medicine in the medicine adding tube 181 into the drainage pipe 11; when the medicine adding rod 182 resets, the blocking cap 1822 opens, the medicine in the liquid storage cavity fills the medicine adding tube 181, and the pipe cap 1811 closes to prevent the rainwater in the drainage pipe 11 from entering the medicine adding tube 181. This cycle is repeated to achieve the automatic addition of the medicine.

[0061] According to an embodiment of the present invention, as Figure 11 shown, it further includes a ball blocking assembly 21. The routing of the medicine adding tube 181 includes a funnel-shaped section. The ball blocking assembly 21 is arranged in the vertical part of the funnel-shaped section of the medicine adding tube 181. The ball blocking assembly 21 includes a floating ball 211, a sliding rod 212, a sealing ball 213, and a sealing ring 214. The sliding rod 212 vertically penetrates the medicine adding tube 181 and is in sealed sliding connection with the medicine adding tube 181. The top end of the sliding rod 212 is connected to the floating ball 211, and the bottom end is connected to the sealing ball 213. The sealing ball 213 is located inside the medicine adding tube 181 and is provided with a counterweight 215. The sealing ring 214 is arranged inside the medicine adding tube 181. When the sealing ball 213 is at the lowest position, the sealing ball 213 is in sealed cooperation with the sealing ring 214 to prevent the medicine from moving; when the sealing ball 213 is at the highest position, the inner wall of the medicine adding tube 181 limits the sealing ball 213, and the medicine at the handle part enters the spoon part from below the sealing ball 213. When the water level in the drainage pipe 11 continuously rises, the floating ball 211 is in the water flow and its position also rises. The sealing ball 213 leaves the sealing ring 214, and the medicine can move inside the medicine adding tube 181; when the water level drops, the sealing ball 213 starts to drop due to the gravity of the counterweight 215, and the sealing ball 213 is in sealed cooperation with the sealing ring 214 to prevent the leakage of the system medicine.

[0062] It should be noted here that the water level height corresponding to the highest position of the sealing ball 213 should be lower than the water level height at which the water wheel 154 starts to rotate. That is, when the water level is low in the dry season, the sealing ball 213 prevents the agent in the dosing pipe 181 from moving and prevents liquid leakage. When the water level rises in the rainy season, the sealing ball 213 leaves the sealing ring 214 and gradually rises to the highest position. When the water level continues to rise, the water wheel 154 starts to rotate, and the push-suction type dosing device 18 starts to dose medicine.

[0063] According to an embodiment of the present invention, as Figure 4 shown, an exhaust valve 22 is provided at the upper end of the medicine storage device 15. The medicine storage device 15 can discharge the accumulated gas inside through the exhaust valve 22. A filter screen 23 is provided at the inlet end of the water passing trough 152. The filter screen 23 is used to filter the water flow passing through the water passing trough 152, preventing impurities in the water flow from affecting the service life of the device.

[0064] According to an embodiment of the present invention, as Figure 5 shown, the water wheel 154 is provided with multiple blades, and the water flow pushes the blades to move. The water wheel 154 can also be of other shapes, such as annular.

[0065] According to an embodiment of the present invention, as Figure 2 and Figure 3 shown, the seal 13 includes a first seal 131 and a second seal 132 distributed on both sides of the first rotating shaft 121. The first seal 131 is provided on the upstream side of the rotating weir plate 12, and is used to prevent one end of the baffle 123 from rotating upstream due to the prefabricated torsion and prevent the water flow from passing through. The second seal 132 is provided on the downstream side of the rotating weir plate 12, and is used to prevent the other end of the baffle 123 from rotating downstream due to the prefabricated torsion and prevent the water flow from passing through. In the dry season, the baffle 123 has a tendency to rotate due to the prefabricated torsion, and the seal 13 limits the position of the baffle 123, making the baffle 123 perpendicular to the water flow direction; at the same time, the seal 13 restricts the water flow passing through the gap between the baffle 123 and the drainage pipe 11, which is beneficial for the baffle 123 to intercept sewage and reach the siphon water level 24 of the siphon drain pipe 14. In the rainy season, the torsion at the bottom end of the first rotating shaft 121 is greater than the prefabricated torsion at the top end, and the baffle 123 can rotate in the direction opposite to the prefabricated torsion. When the baffle 123 is opened to the maximum, the included angle between the baffle 123 and the water flow direction is 0.

[0066] According to an embodiment of the present invention, Figure 12 illustrates a schematic cross-sectional view of the torsion elimination assembly 19, Figure 13 illustrates Figure 12 the schematic view in the G-G direction in Figure 14 illustrates Figure 12 the schematic view in the H-H direction in Figure 15 illustrates a schematic view of the alignment member 16, as Figures 12-15As shown, the medicine delivery pipe 17 is connected to the rotary weir plate 12. The medicine storage instrument 15 is inclinedly arranged on the baffle 123 through the medicine delivery pipe 17. The inclination direction of the medicine delivery pipe 17 faces the upstream of the baffle 123. When the rotary weir plate 12 rotates, the medicine storage instrument 15 being inclinedly arranged at the top of the baffle 123 can increase the projected area of the baffle 123 and the side of the medicine storage instrument 15 perpendicular to the water flow direction, making the projected area of this side perpendicular to the water flow direction always larger than the other side. The medicine delivery pipe 17 is provided with a torsion elimination component 19, enabling the medicine storage instrument 15 to rotate relative to the baffle 123. The medicine delivery pipe 17 includes a first medicine delivery pipe 171 and a second medicine delivery pipe 172. The first medicine delivery pipe 171, the torsion elimination component 19, and the second medicine delivery pipe 172 are connected in sequence. The torsion elimination component 19 includes a first component 191 and a second component 192. A medicine delivery cavity 1921 is provided inside the second component 192. One end of the first component 191 is fitted with the inner wall of the medicine delivery cavity 1921 through a ball, and the other end penetrates through the medicine delivery cavity 1921; the first medicine delivery pipe 171 penetrates through the first component 191 and is connected to the medicine delivery cavity 1921, the second medicine delivery pipe 172 penetrates through the second component 192 and is connected to the medicine delivery cavity 1921. The first medicine delivery pipe 171 is connected to the medicine storage instrument 15, and the second medicine delivery pipe 172 is connected to the baffle 123. The first medicine delivery pipe 171 can rotate relative to the second medicine delivery pipe 172. When the first medicine delivery pipe 171 is twisted, the ball will rotate and displace, thereby eliminating the torsional force of the second medicine delivery pipe 172.

[0067] The alignment member 16 includes an aligned plate 161 and an alignment shaft 162 which are connected. The areas of the aligned plates 161 on both sides of the alignment shaft 162 are different. The side with the smaller area is on the same side as the inlet end of the water passing trough 152. When facing the water flow, due to the different areas and different shaft distances on both sides of the alignment shaft 162, the aligned plate 161 will rotate around the alignment shaft 162, and rotate until the side with the smaller area is upstream, that is, the inlet end of the water passing trough 152 faces the oncoming water direction.

[0068] It should be noted here that one end of the first component 191 penetrates through one end of the medicine delivery cavity 1921 and is rotatably connected to the second component 192 in a sealed manner. The second medicine delivery pipe 172 penetrates through the second component 192 in a sealed manner. The first medicine delivery pipe 171 and the second medicine delivery pipe 172 are rigid pipes. The section of the medicine delivery pipe 17 inside the drainage pipe 11 is connected to the first rotating shaft 121 and the baffle 123. A torsion elimination component 19 can also be provided on the section of the medicine delivery pipe 17 outside the drainage pipe 11 to eliminate the deformation of the medicine delivery pipe 17 caused by the torsion of the baffle 123.

[0069] According to an embodiment of the present invention, Figure 16 Schematic diagram of the guide plate 203 is illustrated, Figure 17 Partial cross-sectional schematic diagram of the cyclone-like 20 is illustrated, Figure 18Schematic diagram of the deflector 203 in another embodiment is illustrated. The inlet end of the siphonic drain pipe 14 is provided with a cyclone-like device 20. The cyclone-like device 20 includes a top plate 201 and a bottom plate 202. The bottom plate 202 is provided with a vertically penetrating water outlet, and the water outlet is communicated with the siphonic drain pipe 14. A deflector 203 is arranged between the top plate 201 and the bottom plate 202. The extending direction of the deflector 203 from outside to inside can be clockwise or counterclockwise. A diversion channel 204 is formed between two adjacent deflectors 203. Sewage enters the cyclone-like device 20 through the diversion channel 204 and enters the siphonic drain pipe 14 through the water outlet. On the one hand, it prevents the generation of swirl on the water surface and the entry of air into the siphonic drain pipe 14. On the other hand, a water-cut swirl is formed at the bottom of the water, which can scour the bottom sediment and is beneficial to transfer the alluvial deposits upstream of the baffle 123 to downstream of the baffle 123.

[0070] It is generally considered that the mud content in municipal sewage in the drainage pipe 11 is generally above 99.5%. Therefore, it is considered that the flow law of sewage follows the general fluid law, and the calculation is carried out according to the hydraulic uniform flow formula.

[0071] Calculation formula for the head loss of the siphonic drain pipe 14 pipeline: h = h j + h i

[0072]

[0073] Where:

[0074] h represents the total head loss (m);

[0075] h j represents the frictional head loss (m);

[0076] h i represents the local head loss (m);

[0077] v represents the average cross-sectional velocity (m / s);

[0078] l represents the total length of the siphonic drain pipe (m);

[0079] d represents the diameter of the siphonic drain pipe (m);

[0080] R represents the hydraulic radius (m);

[0081] ξ represents the local head loss coefficient.

[0082] Figure 19 Illustrated is the routing of the siphonic drain pipe 14. According to the routing design of this time, ξ = 4.62. UPVC pipes are used in this design. For example:

[0083] ①The diameter d of the siphonic drain pipe 14 is 0.15 m, the total length of the siphonic drain pipe 14 is taken as l = 2 m, the average flow velocity of the siphonic drain pipe 14 is taken as v = 0.70 m / s. After calculation, the sewage flow rate Q = 0.0124 m 3 / s, and the total head loss h = 0.34 m. That is to say, when the water surface pressure difference H before and after the baffle 123 is greater than 0.34 m, the siphonic drain pipe 14 will quickly suck the sewage, and the higher the water surface pressure difference before and after, the better the sucking effect;

[0084] ②The diameter d of the siphonic drain pipe 14 is 0.20 m, the total length of the siphonic drain pipe 14 is taken as l = 2 m, the average flow velocity of the siphonic drain pipe 14 is taken as v = 0.70 m / s. After calculation, the sewage flow rate Q = 0.022 m 3 / s, and the total head loss h = 0.27 m. That is to say, when the water surface pressure difference H before and after the baffle 123 is greater than 0.27 m, the siphonic drain pipe 14 will quickly suck the sewage.

[0085] Comparing the two schemes, it can be seen that: the greater the water surface pressure difference H before and after the baffle 123, the larger the diameter d of the siphonic drain pipe 14, the greater the drainage flow rate, and the better the sucking effect. However, considering economy and applicability, the water surface pressure difference H before and after the baffle 123 should be ≥ 0.35 m. Therefore, this design scheme is applicable to the modification of drainage pipes 11 above DN800, and it is recommended that the siphonic drain pipe 14 should preferably adopt DN100 - DN200.

[0086] Working principle of the present invention: In the rainwater pipe with mixed sewage, when the water level is low in the dry season, the baffle 123 is perpendicular to the sewage flow direction. The rotary weir plate 12 and the seal 13 intercept the sewage with low flow velocity and small flow rate, causing the water storage level H1 to gradually increase. When the water level reaches the top height of the siphonic drain pipe 14, that is, the siphon water level 24, a siphon phenomenon will occur in the siphonic drain pipe 14, and the sewage stored upstream of the rotary weir plate 12 will be quickly sucked. Due to the extremely rapid siphon suction, and because the inlet end of the siphonic drain pipe 14 is at the bottom of the drainage pipe 11, an instantaneous and strong bottom scour water wave will be formed, which has a scouring effect on the bottom sediment. Also, because a cyclone-like device 20 is provided at the inlet end, a swirl flow will be formed at the bottom of the pipe, further increasing the scouring of the bottom sediment. At the same time, the sealing ball 213 and the sealing ring 214 are in sealing cooperation to prevent the movement of the medicament in the dosing pipe 181 and prevent liquid leakage. In the rainy season, as the rainfall runoff continuously increases, the water level H2 in the drainage pipe 11 gradually rises. When the water level exceeds the upper end of the baffle 123, a torque begins to be generated at the lower end of the rotary weir plate 12. As the water level rises, the torque gradually increases. When the water level exceeds the torsion water level 25, the generated torque exceeds the pre-set torque of the prefabricated spring group, and the rotary weir plate 12 twists around the first rotation axis 121 to achieve the purpose of rapid drainage without affecting the drainage function of the drainage pipe 11. At the same time, the medicine storage device 15 rotates relative to the baffle 123, making the opening direction of the water passing trough 152 consistent with the water flow direction; the sealing ball 213 leaves the sealing ring 214 and gradually rises to the highest position, and the medicament at the handle of the bucket-shaped section of the dosing pipe 181 can enter the scoop through the lower part of the sealing ball 213. When the water level continues to rise, the water flow impacts the blades of the water wheel 154 in the water passing trough 152, and the water wheel 154 starts to rotate. The greater the flow rate, the greater the rotation speed of the water wheel 154. The turntable 1831 rotates synchronously with the water wheel 154, and the connecting rod 1832 can drive the reciprocating suction movement of the dosing rod 182 by using the circular motion of the turntable 1831. When dosing, the dosing rod 182 pushes the medicament towards the outlet end of the dosing pipe 181, the blocking cap 1822 closes, and the pipe cap 1811 opens. The dosing rod 182 puts the medicament in the dosing pipe 181 into the drainage pipe 11; when the dosing rod 182 returns to its original position, the blocking cap 1822 opens, the pipe cap 1811 closes, and the medicament in the liquid storage cavity fills the dosing pipe 181, and this process repeats to achieve automatic dosing of the medicament based on the flow rate of the drainage pipe 11.

[0087] As the rainfall ends, the drainage water level H2 gradually decreases, and the torque at the lower end of the rotary weir plate 12 gradually decreases. When the torque is less than the pre-set torque of the prefabricated spring group, the rotary weir plate 12 automatically resets to the original dry-season drainage state. The sealing ball 213 drops and is in sealing cooperation with the sealing ring 214.

[0088] The technical solutions of the embodiments in the present invention can be combined, and the technical features in the embodiments can also be combined to form a new technical solution. Structures that are not mentioned in the embodiments but can achieve the relevant functions in the embodiments are prior art.

[0089] As mentioned above, the above are only specific embodiments 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 can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An automatic water treatment device for drainage pipes, characterized in that, Comprising: A rotating weir plate, which includes a first rotating shaft, a prefabricated torsion spring group, and a segmental baffle. One end of the first rotating shaft is connected to the prefabricated torsion spring group, and the prefabricated torsion spring group is connected to the top end of the drainage pipe and provides prefabricated torsion for the first rotating shaft; the other end of the first rotating shaft is connected to the baffle and coincides with the central axis of the baffle, and the bottom end of the baffle is in clearance fit with the inner wall of the drainage pipe; A seal, which is arc-shaped and connected to the inner wall of the drainage pipe, and is arranged on both sides of the rotating weir plate to limit the rotating weir plate; A siphon drainage pipe, the inlet end of which is arranged upstream of the rotating weir plate and communicates with the bottom of the inner cavity of the drainage pipe, and the outlet end of which is arranged downstream of the rotating weir plate and communicates with the side wall of the drainage pipe; A medicine storage device, which is rotatably arranged on the top of the baffle, and a direction correcting member is arranged below the medicine storage device for adjusting the orientation of the medicine storage device; the medicine storage device is provided with a medicine storage cavity, and the medicine storage cavity is communicated with an external medicine delivery member through a medicine delivery pipe; the medicine storage device is provided with a through water tank along the water flow direction, and the medicine storage device is provided with a buffer cavity, and the buffer cavity has only one end open and communicates with the through water tank; the medicine storage device is rotatably connected with a water wheel, and the extending direction of the central axis of the water wheel is perpendicular to the water flow direction; one end of the water wheel is located in the through water tank, and the other end is located in the buffer cavity; A push-suction type medicine adding device, which is connected to the water wheel and is used for adding medicine into the drainage pipe.

2. The automatic water treatment device for drainage pipes according to claim 1, characterized in that, The push-suction type medicine adding device includes a medicine adding pipe and a medicine adding rod. The inlet end of the medicine adding pipe is communicated with the medicine storage cavity, and the outlet end is intermittently communicated with the drainage pipe; one end of the medicine adding rod is connected to the second rotating shaft of the water wheel through a rotating member, and the other end is slidably matched with the inner wall of the medicine adding pipe and reciprocates in the medicine adding pipe, and the rotating member is used for converting the mechanical energy of the second rotating shaft into the kinetic energy of the medicine adding rod.

3. The automatic water treatment device for drainage pipes according to claim 2, characterized in that, The rotating member includes a turntable and a connecting rod. The turntable is connected to the second rotating shaft and is coaxial with the second rotating shaft. One end of the connecting rod is movably connected to the edge of the turntable, and the other end is movably connected to the medicine adding rod.

4. The automatic water treatment device for drainage pipes according to claim 1, characterized in that, The seal includes a first seal and a second seal distributed on both sides of the first rotating shaft. The first seal is arranged on the upstream side of the rotating weir plate to prevent one end of the baffle from rotating upstream due to prefabricated torsion and prevent water flow through. The second seal is arranged on the downstream side of the rotating weir plate to prevent the other end of the baffle from rotating downstream and prevent water flow through.

5. The automatic water treatment device for drainage pipes according to claim 1, characterized in that, The medicine delivery pipe is connected to the rotating weir plate, and the medicine storage device is obliquely arranged on the baffle through the medicine delivery pipe. The inclination direction of the medicine delivery pipe faces the upstream of the baffle, and the medicine delivery pipe is provided with a torsion elimination assembly; the medicine delivery pipe includes a first medicine delivery pipe, a torsion elimination assembly, and a second medicine delivery pipe, which are communicated in sequence; The torque elimination component includes a first member and a second member. A medicine delivery chamber is provided in the second member. One end of the first member is cooperated with the inner wall of the medicine delivery chamber through a ball, and the other end penetrates through the medicine delivery chamber; The first medicine delivery pipe penetrates through the first member and communicates with the medicine delivery chamber, and the second medicine delivery pipe penetrates through the second member and communicates with the medicine delivery chamber; The alignment member includes an aligned plate and an aligned shaft which are connected. The areas of the aligned plates on both sides of the aligned shaft are different.

6. The automatic water treatment device for drainage pipes according to claim 1, characterized in that, A cyclone-like device is provided at the inlet end of the siphon drain pipe. The cyclone-like device includes a top plate and a bottom plate. A vertically penetrating water outlet is provided on the bottom plate. The water outlet communicates with the siphon drain pipe. A flow guide plate is provided between the top plate and the bottom plate. A flow guide channel is formed between two adjacent flow guide plates.

7. The automatic water treatment device for drainage pipes according to claim 2 or 3, characterized in that, One end of the medicine adding rod located in the medicine adding pipe is provided with a liquid outlet penetrating along the movement direction of the medicine adding rod and is provided with a blocking cap hinged to the medicine adding rod. The blocking cap is used for intermittently closing the liquid outlet; a pipe cap hinged to the medicine adding pipe is provided at the outlet end of the medicine adding pipe. The pipe cap is used for intermittently closing the medicine adding pipe.

8. The automatic water treatment device for drainage pipes according to claim 2 or 3, characterized in that, It further includes a ball blocking component. The ball blocking component is arranged in the vertical section of the medicine adding pipe. The ball blocking component includes a floating ball, a sliding rod, a sealing ball and a sealing ring. The sliding rod vertically penetrates through the medicine adding pipe and is in sealed sliding connection with the medicine adding pipe. The top end of the sliding rod is connected to the floating ball, and the bottom end is connected to the sealing ball. The sealing ball is located in the medicine adding pipe and is provided with a counterweight. The sealing ring is arranged in the medicine adding pipe. When the sealing ball is at the lowest position, the sealing ball is in sealed cooperation with the sealing ring.

9. The automatic water treatment device for drainage pipes according to any one of claims 1-6, characterized in that, An exhaust valve is provided at the upper end of the medicine storage device. A filter screen is provided at the inlet end of the water overflow tank. The filter screen is used for filtering the water flowing through the water overflow tank.

10. The automatic water treatment device for drainage pipes according to any one of claims 1-6, characterized in that, The water wheel is provided with a plurality of blades.

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