A sponge city rainwater purification device

Abstract

The present invention belongs to the technical field of sewage treatment, specifically a sponge city rainwater purification device, comprising a treatment part, a disturbance mechanism, a guide mechanism, a separation mechanism, a bearing mechanism and a driving assembly; the treatment part comprises a flocculation tank and a support frame arranged above the flocculation tank; the disturbance mechanism comprises a disturbance blade and a vortex blade, and the disturbance blade and the vortex blade are both rotatably arranged on the inner wall of the flocculation tank; the diversion mechanism comprises a guide tube and a diversion cover, the diversion cover is rotatably arranged on the bottom surface of the support frame, the guide tube is fixedly installed on the inner wall of the flocculation tank, and the guide tube is located directly below the diversion cover; the vortex blade is located in the inner cavity of the guide tube, and the axes coincide; the separation mechanism comprises a bearing frame, a filter layer and an oil-absorbing felt, and the bearing frame is arranged between the guide tube and the diversion cover; the filter layer is fixedly installed on the inner wall of the bearing frame; through the above-mentioned structure, the content of flocculants is reduced during the flocculation process, thereby improving the utilization rate of the flocculant and enhancing the flocculation effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to a sponge city rainwater purification device. Background Art

[0002] Under the concept of sponge city construction, the city realizes the "infiltration, retention, storage, purification, use and discharge" circulation system of rainwater through ecological design. During the migration of rainwater runoff on the surface, it inevitably carries various impurities, including grease. For example, the rainwater flowing in catering areas, urban solid waste and vehicle maintenance areas contains a large amount of grease. In order to prevent grease from affecting the reuse of water resources, the collected water resources will be treated.

[0003] Flocculation treatment is one of the commonly used methods for removing oil from sewage. By adding flocculants to the sewage and utilizing the electrical neutralization, adsorption and bridging effects of the flocculants, the oil and grease particles in the sewage are aggregated to form larger flocs, thereby achieving oil-water separation.

[0004] Flocculants continue to accumulate in the flocculation tank, resulting in increased fluid resistance in the tank and changes in the flow pattern of the water. This makes the residence time of sewage in the flocculation tank unevenly distributed, and some sewage cannot fully contact and react with the flocculant, reducing the utilization rate of the flocculant and affecting the grease removal effect.

[0005] Too many flocs will hinder the collision and combination of newly formed flocs with unreacted oil particles, reducing the flocculation reaction rate. Flocs that remain for a long time will be broken by the shear force of the water flow and redispersed into smaller particles, and may even cause some of the flocculated oil to be released back into the sewage, causing secondary pollution and further reducing the flocculation efficiency.

[0006] To this end, the present invention provides a sponge city rainwater purification device. Summary of the Invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve the technical problem is as follows: a sponge city rainwater purification device according to the present invention comprises a processing part, a flow disturbing mechanism, a flow guiding mechanism, a separation mechanism, a bearing mechanism and a driving assembly;

[0009] The processing part includes a flocculation tank and a support frame arranged above the flocculation tank;

[0010] The flow disturbing mechanism includes a flow disturbing blade and a vortex blade, and the flow disturbing blade and the vortex blade are both rotatably arranged on the inner wall of the flocculation tank;

[0011] The flow guide mechanism includes a flow guide tube and a diversion cover. The diversion cover is rotatably arranged on the bottom surface of the support frame, and the flow guide tube is fixedly installed on the inner wall of the flocculation tank. The flow guide tube is located directly below the diversion cover.

[0012] The vortex blades are located in the inner cavity of the guide tube, and their axes coincide with each other;

[0013] The separation mechanism includes a supporting frame, a filter layer and oil-absorbing felt, and the supporting frame is arranged between the guide tube and the diversion cover;

[0014] The filter layer is fixedly installed on the inner wall of the carrier frame, and one side of the oil-absorbing felt is fixed to the inner wall of the flocculation tank;

[0015] The driving assembly is used to control the spoiler blades and the vortex blades to rotate along the axis of the guide tube.

[0016] Preferably, the drive assembly includes a drive motor and a drive shaft, the drive motor is fixedly mounted on the upper end surface of the support frame, and one end of the drive shaft is fixedly connected to the output shaft of the drive motor;

[0017] The other end of the drive shaft extends to the inner cavity of the guide cylinder and is fixedly connected to the axial end of the vortex blade;

[0018] A bearing platform is rotatably installed at the bottom of the flocculation tank, a spoiler blade is fixedly installed on the outer wall of the bearing platform, and the bottom of the driving shaft is connected to the bearing platform through a one-way clutch.

[0019] Preferably, a mounting cylinder is rotatably mounted on the bottom surface of the support frame, and the upper end surface of the diverter cover is fixedly connected to the bottom surface of the mounting cylinder;

[0020] The drive shaft passes through the mounting cylinder, and the radial outer wall of the drive shaft is connected to the inner wall of the mounting cylinder through a one-way deep groove ball bearing;

[0021] An elastic strip is fixedly mounted on the radial outer wall of the mounting cylinder, the other end of the elastic strip extends to the interior of the carrier frame and is fixedly mounted with a mounting plate, and a scraping plate is fixedly mounted on the outer wall of the mounting plate;

[0022] The filter layer is made of elastic material, and the bottom surface of the scraping plate is slidably fitted with the upper end surface of the filter layer.

[0023] Preferably, a slag discharge bucket is fixedly mounted on the outer wall of the carrier frame, the slag discharge bucket is tilted, and there are multiple slag discharge buckets, which are evenly distributed in a ring shape along the axis of the diversion cover;

[0024] The scraping plate is made of elastic material, and a blocking rod is fixedly installed at the contact position between the slag discharge bucket and the supporting frame.

[0025] Preferably, an air cylinder is rotatably mounted on the bottom surface of the carrier, a control cylinder is fixedly mounted on one end of the air cylinder, and a recoil plate is fixedly mounted on the outer wall of the control cylinder;

[0026] A control plug for controlling the air pressure in the air reservoir cavity is elastically mounted in the inner cavity of the air reservoir, and the control cylinder, the recoil plate and the inner cavity of the air reservoir are interconnected;

[0027] The upper end surface of the recoil plate is in sliding contact with the bottom surface of the filter layer, and an extrusion plug for squeezing the filter layer is elastically installed inside the recoil plate. The recoil plate is located just below the scraper plate.

[0028] Preferably, a guide frame is fixedly installed on the inner wall of the control cylinder, and a transmission rod is slidably installed on the inner wall of the guide frame. The bottom of the transmission rod is fixedly connected to the inner wall of the control cylinder through an elastic member, and the other end of the transmission rod is fixedly connected to the bottom surface of the extrusion plug, which is made of elastic material.

[0029] Preferably, a sliding bar is slidably installed on the inner wall of the control cylinder, the side wall of the sliding bar is slidably fitted with the outer wall of the transmission rod, and a guide groove is opened, and a guide pin is fixedly installed on the outer wall of the transmission rod, one end of the guide pin extends to the inner cavity of the guide groove and slidably fits with the inner wall of the guide groove.

[0030] Preferably, one end of the sliding bar extends to the inner cavity of the air cylinder and is fixedly installed with a guide pin. The inner wall of the air cylinder is fixedly installed with a mounting pin. The outer wall of the mounting pin is rotated with a transmission ring through a torsion spring. The radial outer wall of the transmission ring is provided with a guide groove that slides with the guide pin. The inner wall of the transmission ring is fixedly installed with a traction rope, and the other end of the traction rope is fixedly connected to the outer wall of the control plug.

[0031] Preferably, a guide cylinder is fixedly mounted on the radial outer wall of the drive shaft in one direction, a sliding rod is slidably mounted on the inner wall of the guide cylinder, and one end of the sliding rod is fixedly connected to the outer wall of the control plug;

[0032] The radial outer wall of the guide tube and the outer wall of the carrier are fixedly installed with transmission oblique blocks, and multiple transmission oblique blocks are evenly arranged along the axis of the guide tube. The outer wall of the control plug is fixedly installed with a pressure plate for pressing the transmission oblique blocks.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1. The present invention controls the sewage in the flocculation tank to gush upward along the guide tube by arranging vortex blades, and also arranges oil absorption felt, which is used to absorb grease in the sewage inside the flocculation tank, thereby further improving the efficiency of grease treatment. Liquid leaked from the filter layer drips onto the top of the oil absorption felt, and the grease is absorbed again by the top of the oil absorption felt. During the flocculation process, the content of flocculants is reduced, and the concentration of pollutants such as grease in the solution is reduced, which promotes the flocculation reaction to proceed in the direction of generating flocculants, so that the flocculant and the remaining grease are fully contacted and reacted, thereby improving the utilization rate of the flocculant and enhancing the flocculation effect. At the same time, the reduction of the flocculant content in the sewage effectively reduces the resistance to the rotation of the turbulent blades and the vortex blades, and the mutual promotion further improves the efficiency of removing grease in the sewage.

[0035] 2. The present invention sets a recoil plate and an extrusion plug. After the filter layer filters the flocculants, the flocculant content inside the flocculation tank decreases. At this time, the output shaft of the driving motor is controlled to reverse again, driving the turbulent blades to rotate and stir. At this time, the mounting cylinder rotates, driving the scraper plate to scrape the surface of the filter layer, and cooperates with the extrusion of the extrusion plug and the recoil of the recoil plate to clean the surface of the filter layer, maintain the permeability of the filter layer, and thereby improve the efficiency of reducing the flocculant content, thereby improving the working efficiency of the overall flocculation operation. With stirring, the flocculant content in the flocculation tank increases again. At this time, the driving shaft is controlled to rotate forward, the liquid gushes, and the filter layer after the flow device scrapes is realized to realize a closed working loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 It is a schematic structural diagram of the present invention as a whole;

[0038] Figure 2 It is a schematic diagram of the internal structure of the flocculation tank of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the carrier frame of the present invention;

[0040] Figure 4 This is a schematic diagram of the internal structure of the guide tube in the present invention;

[0041] Figure 5 It is a schematic diagram of the installation of the filter layer in the present invention;

[0042] Figure 6 It is a schematic diagram of the internal structure of the gas storage cylinder of the present invention;

[0043] Figure 7 This is a schematic diagram of the installation of the extrusion plug in the present invention;

[0044] Figure 8 is a schematic diagram of the guide groove in the present invention;

[0045] Figure 9 Schematic diagram of the guide groove in the present invention.

[0046] In the figure: 1. flocculation tank; 2. support frame; 3. drive motor; 4. diverter cover; 5. carrier frame; 6. filter layer; 7. slag bucket; 8. elastic strip; 9. scraper plate; 10. mounting pin; 11. oil-absorbing felt; 12. drive shaft; 13. carrier platform; 14. guide tube; 15. spoiler blade; 16. vortex blade; 17. transmission wedge; 18. mounting tube; 19. blocking rod; 20. mounting plate; 21. control tube; 22. guide tube; 23. recoil plate; 24. air storage cylinder; 25. extrusion plug; 26. traction rope; 27. control plug; 28. top pressure plate; 29. ​​sliding rod; 30. transmission ring; 31. transmission rod; 32. guide groove; 33. sliding strip; 34. guide frame; 35. guide groove; 36. guide pin; 37. guide pin. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0048] like Figures 1 to 9 As shown, the sponge city rainwater purification device described in the present invention includes a processing part, a flow disturbing mechanism, a flow guiding mechanism, a separation mechanism, a bearing mechanism and a driving assembly.

[0049] The treatment section includes a flocculation tank 1 and a support frame 2 arranged above the flocculation tank 1. The collected sewage (rainwater containing grease and small particulate impurities) is transported to the flocculation tank 1 through a pump group. The flocculation tank 1 has an inlet and a drain. The sewage enters through the inlet and the treated sewage is discharged through the drain. The support frame 2 is used for equipment installation and for staff to walk on, and its bottom is connected to the foundation.

[0050] After the sewage is injected into the flocculation tank 1 , a flocculant (in this embodiment, a polyaluminum chloride flocculant solution is selected as the flocculant) is added into the flocculation tank 1 , so that the oil in the sewage is flocculated and precipitated, thereby facilitating the reuse of the treated sewage.

[0051] The disturbance mechanism includes a disturbance blade 15 and a vortex blade 16. The disturbance blade 15 and the vortex blade 16 are both rotatably arranged on the inner wall of the flocculation tank 1. The disturbance blade 15 is arranged at the bottom of the flocculation tank 1. The liquid inside the flocculation tank 1 is stirred by rotating the disturbance blade 15 to facilitate the full mixing of the flocculant and increase the flocculation rate. The vortex blade 16 is used to control the water body in the flocculation tank 1 to flow in the vertical direction, thereby controlling the interactive flow of the upper and bottom liquids in the flocculation tank 1.

[0052] The diversion mechanism includes a guide tube 14 and a diverter cover 4. The diverter cover 4 is rotatably arranged on the bottom surface of the support frame 2. The guide tube 14 is fixedly installed on the inner wall of the flocculation tank 1. The guide tube 14 is located directly below the diverter cover 4, wherein the diverter cover 4 is an inverted cone. When the sewage inside the flocculation tank 1 impacts the inside of the diverter cover 4, it flows along the bottom of the diverter cover 4 and then diffuses to the surroundings.

[0053] The vortex blades 16 are located in the inner cavity of the guide tube 14, and the axes coincide with each other. During the rotation of the vortex blades 16, the sewage flows along the inner cavity of the guide tube 14. When the vortex blades 16 rotate in the forward direction, the sewage flows from bottom to top in the guide tube 14 and sprays out the bottom surface of the branch diversion cover 4 at the upper end.

[0054] The separation mechanism includes a supporting frame 5, a filter layer 6 and an oil-absorbing felt 11. The supporting frame 5 is arranged between the guide tube 14 and the diverter cover 4. The sewage sprayed along the guide tube 14 to the bottom surface of the diverter cover 4 flows along the bottom surface of the diverter cover 4 due to gravity until it drips on the upper end surface of the supporting frame 5 and flows along the upper end surface of the supporting frame 5.

[0055] The filter layer 6 is fixedly mounted on the inner wall of the support frame 5. In this embodiment, the filter layer 6 is made of filter non-woven fabric. The sewage flowing along the outer wall of the support frame 5 flows to the filter layer 6 and then leaks downward. The flocculants and solid particle impurities remain above the filter layer 6, and the leaked liquid flows back to the inside of the flocculation tank 1.

[0056] One side of the oil-absorbing felt 11 is fixed to the inner wall of the flocculation tank 1, and the other side of the oil-absorbing felt 11 is located directly below the filter layer 6. The oil-absorbing felt 11 is used to absorb the grease in the sewage inside the flocculation tank 1, thereby further improving the efficiency of grease treatment. The liquid leaked from the filter layer 6 drips onto the top of the oil-absorbing felt 11, and the grease is absorbed again by the top of the oil-absorbing felt 11, thereby further removing the grease that has not been flocculated. At the same time, compared with the prior art, in which the oil-absorbing felt 11 only floats on the surface of the sewage to absorb oil, the sewage is made to flow from top to bottom above the oil-absorbing felt 11, which can effectively increase the contact area between the oil-absorbing felt 11 and the sewage, thereby improving the oil absorption efficiency.

[0057] The driving assembly is used to control the rotation of the turbulent blades 15 and the vortex blades 16 along the axis of the guide tube 14 as a power source for controlling the flow of sewage. In this embodiment, by reducing the content of flocculants during the flocculation process, the concentration of pollutants such as grease in the solution is reduced. According to the principle of chemical equilibrium, this is conducive to promoting the flocculation reaction in the direction of generating flocculants, so that the flocculant and the remaining grease are fully in contact and reacted, thereby improving the utilization rate of the flocculant and enhancing the flocculation effect. At the same time, the reduction in the flocculant content in the sewage effectively reduces the resistance to the rotation of the turbulent blades 15 and the vortex blades 16. Under mutual promotion, the removal efficiency of grease in the sewage is further improved.

[0058] At the same time, the content of flocs is reduced to prevent the flocs that stay for a long time from being broken by the shear force of the water flow, and the risk of flocs breaking during the stirring process is reduced.

[0059] The drive assembly includes a drive motor 3 and a drive shaft 12. The drive motor 3 is fixedly mounted on the upper end surface of the support frame 2. One end of the drive shaft 12 is fixedly connected to the output shaft of the drive motor 3. The support frame 2 provides an installation and support position for the drive motor 3, and the drive shaft 12 is driven to rotate by the drive motor 3.

[0060] The other end of the drive shaft 12 extends to the inner cavity of the guide cylinder 14 and is fixedly connected to the axial end of the vortex blade 16. When the drive shaft 12 is controlled by the drive motor 3 to rotate forward, the vortex blade 16 rotates synchronously. At this time, the sewage moves upward in the guide cylinder 14. When the drive shaft 12 is driven by the drive motor 3 to rotate in the reverse direction, the vortex blade 16 rotates synchronously in the reverse direction. At this time, the sewage flows downward in the guide cylinder 14.

[0061] A supporting platform 13 is rotatably installed at the bottom of the flocculation tank 1, and the spoiler blades 15 are fixedly installed on the outer wall of the supporting platform 13. The bottom of the drive shaft 12 is connected to the supporting platform 13 through a one-way clutch. When the drive shaft 12 rotates forward, the drive shaft 12 idles, and the supporting platform 13 remains fixed. When the drive shaft 12 rotates reversely, the drive shaft 12 drives the supporting platform 13 and the spoiler blades 15 to rotate through the one-way clutch, thereby realizing the mixing of sewage and flocculant.

[0062] When the drive shaft 12 rotates in the reverse direction, the vortex blades 16 rotate in the reverse direction, thereby controlling the upper sewage in the flocculation tank 1 to flow downward, cooperating with the rotation of the turbulent blades 15 at the bottom to further improve the mixing efficiency, thereby improving the efficiency of oil flocculation.

[0063] As a preferred embodiment of the present invention, a mounting cylinder 18 is rotatably mounted on the bottom surface of the support frame 2, and the upper end surface of the diverter cover 4 is fixedly connected to the bottom surface of the mounting cylinder 18, and the mounting cylinder 18 provides installation and support for the diverter cover 4.

[0064] The drive shaft 12 passes through the mounting cylinder 18, and the radial outer wall of the drive shaft 12 is connected to the inner wall of the mounting cylinder 18 through a one-way deep groove ball bearing, wherein the torque transmission direction of the one-way clutch is the same as the torque transmission direction of the one-way deep groove bearing, so that when the drive shaft 12 rotates in the reverse direction, the mounting cylinder 18 is driven to rotate, and when the drive shaft 12 rotates in the forward direction, the mounting cylinder 18 remains fixed.

[0065] Since the liquid gushing needs to be controlled when the vortex blades 16 rotate in the forward direction, sufficient power is required to maintain the rotation speed. When the drive shaft 12 rotates in the forward direction, the mounting cylinder 18 and the supporting platform 13 remain fixed, and the drive shaft 12 completely transfers the kinetic energy to the vortex blades 16, thereby maintaining a reasonable distribution of kinetic energy.

[0066] An elastic strip 8 is fixedly mounted on the radial outer wall of the mounting tube 18 . In this embodiment, the elastic strip 8 is made of an elastic copper plate.

[0067] The other end of the elastic strip 8 extends to the interior of the carrier frame 5 and is fixedly installed with a mounting plate 20. The outer wall of the mounting plate 20 is fixedly installed with a scraper plate 9. During the rotation of the mounting cylinder 18, the elastic strip 8 drives the mounting plate 20 and the scraper plate 9 to rotate.

[0068] The filter layer 6 is made of elastic material. In this embodiment, the outside of the filter layer 6 is a filter non-woven fabric, and the inside is sewn and filled with filter sponge. The bottom surface of the scraper plate 9 slides and fits with the upper end surface of the filter layer 6. The elastic force of the elastic strip 8 presses the scraper plate 9, so that the scraper plate 9 has a tendency to fit with the surface of the filter layer 6 in real time.

[0069] After the filter layer 6 filters the flocculants, the flocculant content inside the flocculation tank 1 decreases. At this time, the output shaft of the drive motor 3 is controlled to reverse again, driving the turbulent blades 15 to rotate and stir. At this time, the mounting cylinder 18 rotates, driving the scraper plate 9 to scrape the surface of the filter layer 6, clean the surface of the filter layer 6, maintain the permeability of the filter layer 6, and thereby improve the efficiency of reducing the flocculant content, thereby improving the working efficiency of the overall flocculation operation. With stirring, the flocculant content in the flocculation tank 1 increases again. At this time, the drive shaft 12 is controlled to rotate forward, the liquid gushes, and the filter layer 6 scraped by the flow device is scraped to realize a closed working loop.

[0070] A slag discharge hopper 7 is fixedly mounted on the outer wall of the supporting frame 5 . The slag discharge hopper 7 is tilted, and there are multiple slag discharge hoppers 7 . The other end of the slag discharge hopper 7 extends to the outside of the flocculation tank 1 .

[0071] The plurality of slag discharge buckets 7 are evenly distributed in a ring shape along the axis of the diverter cover 4 , so as to facilitate the flocculants collected above the filter layer 6 to slide down.

[0072] The scraping plate 9 is made of elastic material and is tilted. During the rotation of the scraping plate 9 , the inclined surface of the scraping plate 9 pushes the flocculent material to the slag discharge hopper 7 to discharge the flocculent material.

[0073] A blocking rod 19 is fixedly installed at the contact position between the slag hopper 7 and the carrier frame 5. As the scraper plate 9 rotates, the scraper plate 9 fits against the blocking rod 19, causing the rotating scraper plate 9 to deform until the scraper plate 9 separates from the blocking rod 19 and hits the next blocking rod 19, generating vibration, driving the slag hopper 7 (the slag hopper 7 is made of elastic material) to vibrate, thereby improving the efficiency of flocs sliding off the slag hopper 7.

[0074] As a preferred embodiment of the present invention, an air cylinder 24 is rotatably mounted on the bottom surface of the carrier frame 5, a control cylinder 21 is fixedly mounted on one end of the air cylinder 24, a recoil plate 23 is fixedly mounted on the outer wall of the control cylinder 21, a slider is provided on the outer wall of the air cylinder 24, and a slide rail (not shown in the figure) for sliding of the slider is provided at the bottom of the carrier frame 5, and support is provided for the control cylinder 21 and the recoil plate 23 through the air cylinder 24.

[0075] The inner cavity of the air cylinder 24 is elastically installed with a control plug 27 for controlling the air pressure in the inner cavity of the air cylinder 24. The control plug 27 is made of rubber, and its outer wall is sealed to the inner wall of the air cylinder 24. One end of the control plug 27 is connected to the inner cavity of the air cylinder 24 through a spring.

[0076] The inner cavities of the control cylinder 21 , the recoil plate 23 and the air reservoir 24 are interconnected. The air pressure in the inner cavities of the control cylinder 21 , the recoil plate 23 and the air reservoir 24 is controlled by sliding the control plug 27 .

[0077] The air cylinder 24 has an air inlet and an exhaust port. A one-way valve is provided in the air inlet. When the control plug 27 slides back and forth, the external air is controlled to enter the interior of the air cylinder 24 through the air inlet and be discharged from above the recoil plate 23.

[0078] The upper end surface of the recoil plate 23 is slidably fitted with the bottom surface of the filter layer 6, and a squeezing plug 25 for squeezing the filter layer 6 is elastically installed inside the recoil plate 23. The squeezing plug 25 has a conical structure, thereby realizing unidirectional conduction of the recoil plate 23. When the control plug 27 slides back and forth, the gas inside the gas storage cylinder 24 is discharged through the recoil plate 23, and the control plug 27 is pushed upward to squeeze the filter layer 6 and assist the filter layer 6 in draining water. At the same time, when the gas is discharged, the filter layer 6 is recoiled upward to discharge the dirt mixed in the holes on the upper side of the filter layer 6, thereby improving the cleaning efficiency of the filter layer 6 and maintaining the efficiency of floc removal.

[0079] The recoil plate 23 is located directly below the scraper plate 9. When the recoil plate 23 recoils, the filter layer 6 bulges upward, and the scraper plate 9 scrapes the bulging part of the filter layer 6, thereby improving the efficiency of scraping cleaning, mutually promoting and improving the cleaning efficiency of the filter layer 6, thereby maintaining the efficiency of reducing the floc content, and improving the flocculation quality.

[0080] A guide frame 34 is fixedly mounted on the inner wall of the control cylinder 21 , and a transmission rod 31 is slidably mounted on the inner wall of the guide frame 34 . The guide frame 34 provides installation and guidance for the transmission rod 31 .

[0081] The bottom of the transmission rod 31 is fixedly connected to the inner wall of the control cylinder 21 through an elastic member, and the other end of the transmission rod 31 is fixedly connected to the bottom surface of the extrusion plug 25. The extrusion plug 25 is made of elastic material. Through the elastic member at the bottom of the transmission rod 31, the extrusion plug 25 is controlled to have a tendency to fit with the surface of the recoil plate 23 in real time, thereby achieving one-way blocking of the inner cavity of the recoil plate 23.

[0082] As a preferred embodiment of the present invention, a sliding bar 33 is slidably mounted on the inner wall of the control cylinder 21 , and the side wall of the sliding bar 33 is slidably fitted with the outer wall of the transmission rod 31 and is provided with a guide groove 35 , which is inclined.

[0083] A guide pin 36 is fixedly installed on the outer wall of the transmission rod 31, and one end of the guide pin 36 extends to the inner cavity of the guide groove 35 and slides in contact with the inner wall of the guide groove 35. By adjusting the sliding bar 33 laterally, the guide pin 36 is driven to slide along the inner cavity of the inclined guide groove 35, thereby controlling the sliding of the transmission rod 31 and the extrusion plug 25. After the extrusion plug 25 slides down and fits against the outer wall of the recoil plate 23, the recoil plate 23 is closed. When the extrusion plug 25 slides on the recoil plate 23 and separates from the recoil plate 23, the recoil plate 23 is turned on.

[0084] When the squeezing plug 25 is in contact with the recoil plate 23, as the control plug 27 slides, the inner cavity of the recoil plate 23 gradually rises. At this time, the squeezing plug 25 is controlled to separate from the recoil plate 23, and the pressurized air is discharged, thereby increasing the recoil force of the recoil filter layer 6. During the reciprocating sliding of the control plug 27, the squeezing plug 25 is controlled to intermittently fit and separate from the recoil plate 23, thereby controlling the internal gas of the recoil plate 23 to be pressurized and then discharged, thereby improving the cleaning quality of the filter layer 6 and maintaining the efficiency of capturing flocs.

[0085] One end of the sliding bar 33 extends to the inner cavity of the air storage cylinder 24 and is fixedly mounted with a guide pin 37 . The reciprocating sliding guide pin 37 drives the sliding bar 33 to slide back and forth, thereby controlling the reciprocating sliding of the extrusion plug 25 .

[0086] The inner wall of the air reservoir 24 is fixedly mounted with a mounting pin 10, and the outer wall of the mounting pin 10 is rotated by a torsion spring with a transmission ring 30, and the radial outer wall of the transmission ring 30 is provided with a guide groove 32 (such as Figure 9 As shown), the rotating transmission ring 30 controls the reciprocating sliding of the sliding bar 33 through the cooperation of the guide groove 32 and the guide pin 37, thereby controlling the closing and conduction of the inner cavity of the recoil plate 23.

[0087] A traction rope 26 is fixedly installed on the inner wall of the transmission ring 30, and the other end of the traction rope 26 is fixedly connected to the outer wall of the control plug 27. The traction rope 26 is wound inside the transmission ring 30. When the control plug 27 is away from the transmission ring 30 (at this time, air is inhaled inside the air cylinder 24), the traction rope 26 pulls the transmission ring 30 to rotate, and controls the sliding bar 33 to slide back and forth. When the control plug 27 approaches the transmission ring 30 (at this time, the air is exhausted inside the air cylinder 24), the torsion spring controls the transmission ring 30 to reset and rotate, thereby controlling the sliding bar 33 to slide back and forth. When the air is exhausted inside the air cylinder 24, the squeezing plug 25 squeezes the recoil plate 23 of the filter layer 6 while exhausting and backwashing the filter layer 6. When the air is inhaled in the air cylinder 24, only the squeezing plug 25 squeezes the bottom of the filter layer 6.

[0088] A guide cylinder 22 is fixedly installed on the radial outer wall of the drive shaft 12 in one direction, and a sliding rod 29 is slidably installed on the inner wall of the guide cylinder 22. The outer wall of the sliding rod 29 slides and fits with the inner wall of the guide cylinder 22. One end of the sliding rod 29 is fixedly connected to the outer wall of the control plug 27. The sliding rod 29 slides, driving the control plug 27 to slide synchronously.

[0089] The radial outer wall of the guide cylinder 14 and the outer wall of the carrier frame 5 are fixedly mounted with a transmission bevel 17. A plurality of transmission bevels 17 are evenly arranged along the axis of the guide cylinder 14. The outer wall of the control plug 27 is fixedly mounted with a pressure plate 28 for pressing the transmission bevel 17. As the drive shaft 12 rotates in the opposite direction, the guide cylinder 22 is driven to rotate synchronously. At this time, the air storage cylinder 24 rotates synchronously, and the transmission bevel 17 pushes the pressure plate 28 to drive the control plug 27 to slide. After the pressure plate 28 is separated from the transmission bevel 17, the control plug 27 is reset by the elastic force, thereby realizing the reciprocating sliding of the control plug 27, so as to control the recoil exhaust of the recoil plate 23.

[0090] In this embodiment, the control plug 27 is selected to slide back and forth to control the internal air pressure of the air storage cylinder 24, and the spring force, the transmission bevel 17 and the top pressure plate 28 are used to drive the control plug 27 to slide back and forth, instead of directly using an air pump as the backwash air source. This is because after the top pressure plate 28 is separated from the transmission bevel 17, the elastic force exerted on the control plug 27 drives the control plug 27 and the top pressure plate 28 to reset. In the process, the top pressure plate 28 hits the outer wall of the supporting frame 5, thereby generating vibration, so that the flocs remaining on the upper surface of the supporting frame 5 can slide onto the filter layer 6, thereby facilitating the scraping and discharge of the flocs, thereby improving the floc collection efficiency.

[0091] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0092] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0093] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sponge city rainwater purification device, characterized by: It includes a processing part, a flow-disturbing mechanism, a flow-guiding mechanism, a separating mechanism, a carrying mechanism and a driving assembly; The processing part includes a flocculation tank and a support frame arranged above the flocculation tank; The flow disturbing mechanism includes a flow disturbing blade and a vortex blade, and the flow disturbing blade and the vortex blade are both rotatably arranged on the inner wall of the flocculation tank; The flow guide mechanism includes a flow guide tube and a diverter cover, the diverter cover is rotatably arranged on the bottom surface of the support frame, and the flow guide tube is fixedly installed on the inner wall of the flocculation tank, and the flow guide tube is located directly below the diverter cover; The vortex blades are located in the inner cavity of the guide tube, and their axes coincide with each other; The separation mechanism includes a supporting frame, a filter layer and oil-absorbing felt, wherein the supporting frame is arranged between the guide tube and the diversion cover; The filter layer is fixedly mounted on the inner wall of the carrier frame, and one side of the oil-absorbing felt is fixed to the inner wall of the flocculation tank; The driving assembly is used to control the spoiler blades and the vortex blades to rotate along the axis of the guide tube; An air cylinder is rotatably mounted on the bottom surface of the carrier, a control cylinder is fixedly mounted on one end of the air cylinder, and a recoil plate is fixedly mounted on the outer wall of the control cylinder; The inner cavity of the gas reservoir is elastically mounted with a control plug for controlling the air pressure in the inner cavity of the gas reservoir, and the control cylinder, the recoil plate and the inner cavity of the gas reservoir are interconnected; A guide cylinder is fixedly mounted on the radial outer wall of the drive shaft in one direction, a sliding rod is slidably mounted on the inner wall of the guide cylinder, and one end of the sliding rod is fixedly connected to the outer wall of the control plug; The radial outer wall of the guide tube and the outer wall of the carrier are both fixedly mounted with transmission oblique blocks, and a plurality of transmission oblique blocks are evenly arranged along the axis of the guide tube. The outer wall of the control plug is fixedly mounted with a pressure plate for pressing the transmission oblique blocks.

2. A sponge city rainwater purification device according to claim 1, characterized in that: The drive assembly includes a drive motor and a drive shaft, wherein the drive motor is fixedly mounted on the upper end surface of the support frame, and one end of the drive shaft is fixedly connected to the output shaft of the drive motor; The other end of the drive shaft extends to the inner cavity of the guide cylinder and is fixedly connected to the axial end of the vortex blade; A bearing platform is rotatably mounted on the bottom of the flocculation tank, the spoiler blades are fixedly mounted on the outer wall of the bearing platform, and the bottom of the driving shaft is connected to the bearing platform via a one-way clutch.

3. A sponge city rainwater purification device according to claim 2, characterized in that: The bottom surface of the support frame is rotatably mounted with a mounting cylinder, and the upper end surface of the diverter cover is fixedly connected to the bottom surface of the mounting cylinder; The drive shaft passes through the mounting cylinder, and the radial outer wall of the drive shaft is connected to the inner wall of the mounting cylinder via a one-way deep groove ball bearing; An elastic strip is fixedly mounted on the radial outer wall of the mounting cylinder, the other end of the elastic strip extends to the interior of the carrier frame and is fixedly mounted with a mounting plate, and a scraping plate is fixedly mounted on the outer wall of the mounting plate; The filter layer is made of elastic material, and the bottom surface of the scraping plate is slidably fitted with the upper end surface of the filter layer.

4. A sponge city rainwater purification device according to claim 3, characterized in that: A slag discharge bucket is fixedly mounted on the outer wall of the carrier frame. The slag discharge bucket is tilted and multiple slag discharge buckets are provided. The multiple slag discharge buckets are evenly distributed in a ring shape along the axis of the diverter cover. The scraping plate is made of elastic material, and a blocking rod is fixedly installed at the contact position between the slag discharge bucket and the supporting frame.

5. A sponge city rainwater purification device according to claim 4, characterized in that: The upper end surface of the recoil plate is in sliding contact with the bottom surface of the filter layer, and an extrusion plug for extruding the filter layer is elastically installed inside the recoil plate. The recoil plate is located directly below the scraper plate.

6. The sponge city rainwater purification device according to claim 5, characterized in that: A guide frame is fixedly installed on the inner wall of the control cylinder, and a transmission rod is slidably installed on the inner wall of the guide frame. The bottom of the transmission rod is fixedly connected to the inner wall of the control cylinder through an elastic member, and the other end of the transmission rod is fixedly connected to the bottom surface of the extrusion plug, and the extrusion plug is made of elastic material.

7. A sponge city rainwater purification device according to claim 6, characterized in that: A sliding bar is slidably installed on the inner wall of the control cylinder, and the side wall of the sliding bar is slidably fitted with the outer wall of the transmission rod and a guide groove is opened. A guide pin is fixedly installed on the outer wall of the transmission rod, and one end of the guide pin extends to the inner cavity of the guide groove and slidably fits with the inner wall of the guide groove.

8. The sponge city rainwater purification device according to claim 7, characterized in that: One end of the sliding bar extends to the inner cavity of the air cylinder and is fixedly installed with a guide pin. The inner wall of the air cylinder is fixedly installed with a mounting pin. The outer wall of the mounting pin is rotated with a transmission ring through a torsion spring. The radial outer wall of the transmission ring is provided with a guide groove that slides with the guide pin. The inner wall of the transmission ring is fixedly installed with a traction rope, and the other end of the traction rope is fixedly connected to the outer wall of the control plug.

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