Self-cleaning sewage treatment equipment

Abstract

The present invention relates to the technical field of sewage treatment, specifically to a self-cleaning sewage treatment equipment, the equipment comprises a shell, a water inlet pipe and a water outlet pipe are arranged on the front side of the shell, a sedimentation tank, an aeration tank, a reaction tank and a clean water tank are arranged in sequence from left to right inside the shell, a self-cleaning mechanism is arranged in the sedimentation tank, the self-cleaning mechanism comprises a V-shaped plate, a spiral push column and a sewage pipe, the V-shaped plate is arranged at the lower end of the sedimentation tank, the spiral push column is located in the sewage pipe, an opening is arranged at the upper end of the sewage pipe, the V-shaped plate is connected to both sides of the opening, the front end of the sewage pipe passes through the shell and then extends out, and a sewage valve is installed on the sewage pipe. The equipment can realize both conventional cleaning of the sedimentation tank and deep cleaning of the sedimentation tank.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a self-cleaning sewage treatment device. Background Art

[0002] Domestic sewage and industrial wastewater need to be treated with sewage treatment equipment before being discharged into the official website to avoid the damage of pollutants or heavy metals to water bodies or soil. Mature sewage treatment equipment consists of sedimentation tanks, aeration tanks, reaction tanks and other parts. The sedimentation tank is the first process of sewage treatment. The pollutants accumulated inside it are the most, and the accumulation rate is relatively fast. Compared with other parts such as aeration tanks, the sedimentation tank is cleaned most frequently. Since the sewage treatment equipment is a connected design, when the sedimentation tank is being cleaned or cleaned, it will inevitably affect the use of other areas. Therefore, how to achieve rapid cleaning of the sedimentation tank is the key to improving the working efficiency of sewage treatment equipment.

[0003] In the prior art, the traditional cleaning method is to manually enter the sedimentation tank for cleaning, which takes a long time and is labor-intensive. Therefore, sewage treatment equipment companies have also tried to add a self-cleaning mechanism in the sedimentation tank, using a stirring shaft to drive a cleaning brush to scrape the inner wall of the sedimentation tank. However, this type of design is often suitable for cylindrical sedimentation tanks, and the cleaning brush can only clean a fixed area. Therefore, multiple sets of cleaning brushes are required, which makes the cost of this type of equipment high. In particular, the more cleaning brushes are used, the higher the failure rate. Therefore, the practicality of this type of equipment is poor, resulting in a low market share. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a self-cleaning sewage treatment equipment, which adopts automatic cleaning for the sedimentation tank that is easy to get dirty, reduces the downtime of sewage treatment equipment for maintenance, and improves the utilization efficiency of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-cleaning sewage treatment equipment, comprising a shell, a water inlet pipe and a water outlet pipe are arranged on the front side of the shell, a sedimentation tank, an aeration tank, a reaction tank and a clean water tank are arranged in sequence from left to right inside the shell, the upper end of the sedimentation tank is connected to the water inlet pipe, the lower end of the aeration tank is provided with an aeration pipe, a membrane bioreactor is arranged inside the reaction tank, the upper end of the clean water tank is connected to the water outlet pipe, and connecting water pipes are arranged between the sedimentation tank and the aeration tank, between the aeration tank and the reaction tank, and between the reaction tank and the clean water tank. A water pump is connected in series in the middle of the connecting water pipe, a fan is provided on the rear side of the shell, the air outlet of the fan is connected with the air inlet of the aeration pipe, the water inlet end of the connecting water pipe is lower than the drainage end, a self-cleaning mechanism is arranged in the sedimentation tank, the self-cleaning mechanism comprises a V-shaped plate, a spiral pushing column and a sewage pipe, the V-shaped plate is arranged at the lower end of the sedimentation tank, the spiral pushing column is located in the sewage pipe, an opening is arranged at the upper end of the sewage pipe, the V-shaped plate is connected on both sides of the opening, the front end of the sewage pipe extends out after passing through the shell, and a sewage valve is installed on the sewage pipe.

[0006] Furthermore, the self-cleaning mechanism also includes a first drive motor, which is arranged at the rear side of the shell, and the output shaft of the first drive motor is fixedly connected to the rear end of the spiral pushing column.

[0007] Furthermore, the self-cleaning mechanism also includes a lifting frame and four second drive motors. The lifting frame is slidably connected to the inside of the sedimentation tank. A scraper is arranged on the lifting frame. The edge of the scraper is in contact with the inner wall of the sedimentation tank. The four second drive motors are all arranged below the V-shaped plate. The output shafts of the four second drive motors are all fixed with transmission screws. The output shafts of the second drive motors are rotatably connected to the V-shaped plate through sealed bearings. The transmission screws are arranged in a vertical direction. The four transmission screws are respectively threadedly connected to the screw holes at the four corners of the lifting frame.

[0008] Furthermore, there are two scrapers, both of which are U-shaped scrapers. The two scrapers are offset up and down and partially overlap in space. The two scrapers can scrape the front and rear inner walls of the sedimentation tank twice.

[0009] Furthermore, the self-cleaning mechanism also includes a nozzle and a liquid inlet hose. The nozzles are multiple and are arranged on the lower surface of the lifting frame. The lifting frame is a hollow structure. The nozzles are all connected to the interior of the lifting frame. One end of the liquid inlet hose is extended into the shell and connected to the liquid inlet of the lifting frame.

[0010] Furthermore, there are two liquid inlet hoses, the lifting frame is a hollow structure, an isolation plate is arranged inside the lifting frame, and the isolation plate divides the hollow area of ​​the lifting frame into a first chamber and a second chamber with independent spaces, and the nozzle is arranged on the lower surface of the lifting frame. The nozzle includes a nozzle body and a floating diverter assembly arranged in the nozzle body, and the floating diverter assembly includes a floating ring, a support spring sleeved on the outside of the floating ring, and a sealing partition fixed in the floating ring. The floating ring is sleeved in the nozzle body, and a first annular step is arranged on the outside of the floating ring. The inner wall of the nozzle body is provided with A second annular step is matched with the first annular step, the support spring is located between the first annular step and the second annular step, the sealing baffle is made of rubber material, the sealing baffle divides the space in the floating ring into a third chamber and a fourth chamber, the third chamber is connected to the first chamber, the fourth chamber is connected to the second chamber, a positioning groove is arranged at the upper end of the sealing baffle, a diverter plate is arranged at the nozzle outlet of the nozzle body, the cross-section of the diverter plate is a herringbone shape, the diverter plate is located at the lower end of the sealing baffle, and the liquid sprayed from the third chamber and the fourth chamber is sprayed in different directions under the action of the diverter plate.

[0011] Further, the cross section of the first chamber is larger than the cross section of the second chamber.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The self-cleaning sewage treatment equipment disclosed in the present invention, when large particles of dirt in the sewage slide down in the sedimentation tank, they are concentrated in the sewage pipe under the guidance of the V-shaped plate, and the dirt can be discharged from the front end of the sewage pipe after the first drive motor, so as to realize the routine self-cleaning of the sewage treatment equipment. When it is necessary to clean the dirt on the inner wall of the sedimentation tank, the cleaning agent is introduced through the liquid inlet hose and sprayed on the side wall of the sedimentation tank through the nozzle, and the second drive motor is started at the same time, and the impurities on the inner wall of the sedimentation tank are pushed and scraped by the U-shaped scraper staggered up and down, so as to realize the deep cleaning of the sedimentation tank.

[0014] 2. The self-cleaning sewage treatment equipment disclosed in the present invention has a hollow structure for the lifting frame, which can firstly reduce the dead weight of the lifting frame and reduce the load of the second drive motor. In addition, the lifting frame also serves as a connecting component between the liquid inlet hose and the nozzle.

[0015] In different usage environments of the present application, the liquid introduced into the liquid inlet hose is different. When the liquid inlet hose introduces a precipitating agent into the sedimentation tank, in order to achieve sufficient contact between the precipitating agent and the sewage, the nozzle is preferably sprayed toward the central area of ​​the sedimentation tank. When the liquid inlet hose introduces a cleaning agent into the sedimentation tank, in order to achieve re-contact between the cleaning agent and the inner wall of the sedimentation tank, the nozzle is preferably sprayed toward the surrounding area of ​​the sedimentation tank. Therefore, using a liquid inlet hose on the market with an existing nozzle on the market cannot meet the needs of both conditions at the same time. Therefore, the present application specifies the number of liquid inlet hoses and the nozzles used as the connection. The structure of the lifting frame between the liquid inlet hose and the nozzle is optimized, specifically: two liquid inlet hoses are used, and an isolation plate is arranged in the lifting frame. The isolation plate divides the hollow area of ​​the lifting port into a first chamber and a second chamber. At the same time, a diverter plate is arranged at the nozzle of the nozzle. When the precipitation agent is introduced into the first chamber, it is sprayed toward the center of the sedimentation tank, which is conducive to the full mixing of the precipitation agent and the sewage; when the cleaning agent is introduced into the second chamber, the cleaning agent is sprayed toward the side walls of the sedimentation tank, which is conducive to the cleaning agent to act concentratedly on the dirt on the side walls of the sedimentation tank, so that one set of mechanism realizes two functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the self-cleaning sewage treatment equipment in Example 1;

[0017] Figure 2 is a perspective view of the self-cleaning sewage treatment equipment in Example 1;

[0018] Figure 3 This is a schematic diagram of the structure inside the housing in Example 1;

[0019] Figure 4 It is a cross-sectional view of the self-cleaning sewage treatment equipment in Example 1;

[0020] Figure 5 for Figure 4 The enlarged view of the area marked with A;

[0021] Figure 6 This is a cross-sectional view of the lifting frame and the nozzle in Example 2.

[0022] In the figure: 100-shell, 101-water inlet pipe, 102-water outlet pipe, 103-sedimentation tank, 104-aeration tank, 105-reaction tank, 106-clear water tank, 107-aeration pipe, 108-membrane bioreactor, 109-connecting water pipe, 110-water pump, 111-fan, 112-control unit, 201-V-plate, 202-screw push column, 203-drain pipe, 204-first drive motor, 205-lifting frame, 206-second driving motor, 207-scraper, 208-transmission screw, 209-sprinkler, 210-liquid inlet hose, 211-isolation plate, 212-first chamber, 213-second chamber, 214-sprinkler body, 215-floating ring, 216-support spring, 217-sealing partition, 218-third chamber, 219-fourth chamber, 220-positioning groove, 221-diverter plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figure 1-5 , this embodiment provides a self-cleaning sewage treatment equipment, including a shell 100 and a self-cleaning mechanism.

[0026] The front side of the housing 100 is provided with an inlet pipe 101 and an outlet pipe 102. The inlet pipe 101 is used to introduce sewage into the housing 100, and the outlet pipe 102 is used to discharge treated water from the housing 100. The interior of the housing 100 is provided with a sedimentation tank 103, an aeration tank 104, a reaction tank 105 and a clean water tank 106 from left to right. The upper end of the sedimentation tank 103 is connected to the inlet pipe 101, the lower end of the aeration tank 104 is provided with an aeration pipe 107, and the interior of the reaction tank 105 is provided with a membrane The upper ends of the bioreactor 108 and the clean water tank 106 are connected to the outlet pipe 102. A connecting water pipe 109 is provided between the sedimentation tank 103 and the aeration tank 104, between the aeration tank 104 and the reaction tank 105, and between the reaction tank 105 and the clean water tank 106. A water pump 110 is connected in series in the middle of the connecting water pipe 109. A fan 111 is provided at the rear side of the housing 100. The air outlet of the fan 111 is connected to the air inlet of the aeration pipe 107 to provide power for the oxygen supply in the aeration pipe 107. A control unit 112 is provided at the rear side of the housing 100. The control unit 112 adopts a programmable logic control module. The controlled ends of the water pump 110 and the fan 111 are electrically connected to the control end of the control unit. It should be pointed out that the water inlet end of the connecting water pipe 109 is lower than the drainage end, that is, the aeration tank 104, the reaction tank 105 and the clean water tank 106 adopt a water pipe arrangement with the water inlet from the bottom and the water outlet from the top.

[0027] The self-cleaning mechanism is arranged in the sedimentation tank 103, and the self-cleaning mechanism includes a V-shaped plate 201, a spiral pushing column 202 and a sewage pipe 203. The V-shaped plate 201 is arranged at the lower end of the sedimentation tank 103, and the spiral pushing column 202 is located in the sewage pipe 203. The sewage pipe 203 is arranged in a horizontal direction, and an opening is arranged at the upper end of the sewage pipe 203. The V-shaped plate 201 is connected to both sides of the opening. The front end of the sewage pipe 203 extends out after passing through the shell 100, and a sewage valve is installed on the sewage pipe 203.

[0028] In this embodiment, the self-cleaning mechanism also includes a first drive motor 204, which is arranged on the rear side of the shell 100, and the output shaft of the first drive motor 204 is fixedly connected to the rear end of the spiral pushing column 202, and the controlled end of the first drive motor 204 is connected to the control end of the control unit 112.

[0029] In this embodiment, the self-cleaning mechanism also includes a lifting frame 205 and four second drive motors 206. The lifting frame 205 is slidably connected to the inside of the sedimentation tank 103. A scraper 207 is arranged on the lifting frame 205. The edge of the scraper 207 is in contact with the inner wall of the sedimentation tank 103. The four second drive motors 206 are all arranged below the V-shaped plate 201. The output shafts of the four second drive motors 206 are all fixed with transmission screws 208. The output shafts of the second drive motors 206 are rotatably connected to the V-shaped plate 201 through sealed bearings. The transmission screws 208 are arranged in the vertical direction. The four transmission screws 208 are respectively threadedly connected to the screw holes at the four corners of the lifting frame 205. The controlled end of the second drive motor 206 is connected to the control end of the control unit 112.

[0030] In this embodiment, the self-cleaning mechanism also includes a nozzle 209 and a liquid inlet hose 210. The nozzle 209 is arranged in multiple numbers on the lower surface of the lifting frame 205. The lifting frame 205 is a hollow structure. A bending tube is arranged on the inner side of the four corners of the lifting frame 205, that is, the four corners of the lifting frame 205 are the positions of the screw holes, and the bending tube and other parts of the lifting frame 205 except the four corners are connected as a hollow area. The nozzles 209 are all connected to the inside of the lifting frame 205, and one end of the liquid inlet hose 210 is extended into the shell 100 and connected to the liquid inlet of the lifting frame 205.

[0031] The working principle of a self-cleaning sewage treatment equipment provided by the present invention is as follows:

[0032] Sewage treatment process: Sewage is introduced into the sedimentation tank 103 in the housing 100 through the water inlet pipe 101 through the pipeline, and the water pump 110 is started to make the sewage pass through the sedimentation tank 103, the aeration tank 104 and the reaction tank 105 in sequence through the connecting water pipe 109. When the sewage is in the sedimentation tank 103, the external precipitation agent is sprayed from the nozzle 209 through the liquid inlet hose 210 and the lifting frame 205, so that the solid particles in the sewage are precipitated in the sedimentation tank 103; when the sewage is in the aeration tank 104, the fan 111 is started, and the aeration pipe 107 is used to transport oxygen into the aeration tank 104, so that the microorganisms in the activated sludge in the aeration tank 104 and the organic matter in the sewage are degraded and converted; when the sewage is in the reaction tank 105, the membrane bioreactor 108 is used to intercept suspended matter and bacteria, and the treated water is finally temporarily stored in the clear water tank 106 and discharged from the outlet pipe 102.

[0033] Self-cleaning process: as the impurities accumulated at the bottom of the sedimentation tank 103 increase, under the guidance of the V-shaped plate 201, the impurities are concentrated in the sewage pipe 203, and the first drive motor 204 is started. The output shaft of the first drive motor 204 drives the spiral push column 202 to rotate, and the sewage valve is opened to discharge the impurities from the sewage pipe 203. At the same time, the external cleaning agent is sprayed from the nozzle 209 through the liquid inlet hose 210 and the lifting frame 205 to reduce the adhesion of impurities to the inner wall of the sedimentation tank 103. At the same time, the second drive motor 206 is started. The second drive motor 206 drives the lifting frame 205 and the scraper 207 on the lifting frame 205 to move downward through the screw transmission, and the scraper 207 that is staggered up and down and is U-shaped is used to push and scrape the impurities on the inner wall of the sedimentation tank 103 to complete the self-cleaning effect of the sedimentation tank. Affected by the discharge direction of dirt in the sedimentation tank 103 and the arrangement direction of the V-shaped plate 201, there is a large amount of dirt on the front and rear side walls (especially the front wall) of the sedimentation tank 103. The scraper 207 of the present invention is designed as a U-shaped structure. The two scrapers 207 are staggered up and down and partially overlap in space (the space on the front and rear sides). The front and rear inner walls of the sedimentation tank 103 can be scraped on both sides, which is beneficial to improving the cleaning effect.

[0034] Example 2

[0035] A self-cleaning sewage treatment equipment provided in this embodiment has a structure that is basically the same as that of Embodiment 1, except that: in the self-cleaning mechanism, there are two liquid inlet hoses 210, the lifting frame 205 is a hollow structure, an isolation plate 211 is arranged inside the lifting frame 205, and the isolation plate 211 divides the hollow area of ​​the lifting frame into a first chamber 212 and a second chamber 213 that are independent of each other in space. There are multiple nozzles 209 arranged on the lower surface of the lifting frame 205, and the nozzles 209 include a nozzle body 214 and a floating diversion component arranged in the nozzle body 214. The floating diversion component includes a floating ring 215 and a support spring 216 sleeved on the outside of the floating ring 215 and a sealing partition 217 fixed in the floating ring 215. The floating ring 215 is sleeved in the nozzle body 214, and a first annular step is arranged on the outside of the floating ring 215. A second annular step matched with the first annular step is arranged on the inner wall of the head body 214, and the support spring 216 is located between the first annular step and the second annular step. The sealing baffle 217 is made of rubber material. The sealing baffle 217 divides the space in the floating ring 215 into a third chamber 218 and a fourth chamber 219. The third chamber 218 is connected to the first chamber 212, and the fourth chamber 219 is connected to the second chamber 213. A positioning groove 220 is arranged at the upper end of the sealing baffle 217. When the nozzle body 214 is threadedly connected to the lifting frame 205, the support spring 216 is compressed, and the positioning groove 220 of the sealing baffle 217 is always in contact with the lower surface of the isolation plate 211. A diverter plate 221 is arranged at the nozzle outlet of the nozzle body 214. The cross section of the diverter plate 221 is a herringbone shape, and the diverter plate 221 is located at the lower end of the sealing baffle 217.

[0036] The clean sewage treatment equipment of this embodiment, when in use:

[0037] When the right liquid inlet hose 210 passes the precipitating agent into the first chamber 212, the precipitating agent enters the third chamber 218 through the first chamber 212, and the spray direction from the nozzle 209 is shown by the solid arrow in the figure, that is, the precipitating agent is sprayed toward the center of the sedimentation tank 103, which is conducive to the full mixing of the precipitating agent and the sewage; when the left liquid inlet hose 210 passes the cleaning agent into the second chamber 213, the cleaning agent enters the fourth chamber 219 through the second chamber 213, and the spray direction of the nozzle 209 is shown by the dotted arrow in the figure, that is, the cleaning agent is sprayed toward the surrounding side walls of the sedimentation tank 103, which is conducive to the cleaning agent to act concentratedly on the dirt on the side walls of the sedimentation tank 103.

[0038] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A self-cleaning sewage treatment device, comprising a shell, a water inlet pipe and a water outlet pipe are arranged on the front side of the shell, a sedimentation tank, an aeration tank, a reaction tank and a clean water tank are arranged in sequence from left to right inside the shell, the upper end of the sedimentation tank is connected to the water inlet pipe, the lower end of the aeration tank is provided with an aeration pipe, a membrane bioreactor is arranged inside the reaction tank, the upper end of the clean water tank is connected to the water outlet pipe, connecting water pipes are arranged between the sedimentation tank and the aeration tank, between the aeration tank and the reaction tank, and between the reaction tank and the clean water tank, a water pump is connected in series in the middle of the connecting water pipe, a fan is arranged on the rear side of the shell, the air outlet of the fan is connected to the air inlet of the aeration pipe, the water inlet end of the connecting water pipe is lower than the drainage end, and it is characterized in that: A self-cleaning mechanism is arranged in the sedimentation tank, and the self-cleaning mechanism comprises a V-shaped plate, a spiral pushing column and a sewage pipe, the V-shaped plate is arranged at the lower end of the sedimentation tank, the spiral pushing column is located in the sewage pipe, an opening is arranged at the upper end of the sewage pipe, the V-shaped plate is connected to both sides of the opening, the front end of the sewage pipe penetrates through the shell and then extends out, a sewage valve is installed on the sewage pipe, the self-cleaning mechanism also comprises a lifting frame, the lifting frame is slidably connected to the interior of the sedimentation tank, the self-cleaning mechanism also comprises a nozzle and a liquid inlet hose, the nozzle is a plurality of nozzles arranged on the lower surface of the lifting frame, the lifting frame is a hollow structure, the nozzles are all connected with the interior of the lifting frame, one end of the liquid inlet hose is extended into the shell and then connected with the liquid inlet of the lifting frame; there are two liquid inlet hoses, the lifting frame is a hollow structure, an isolation plate is arranged inside the lifting frame, the isolation plate divides the hollow area of ​​the lifting frame into a first chamber and a second chamber that are independent of space, the nozzle is arranged in the lifting frame The nozzle comprises a nozzle body and a floating flow diverter assembly arranged in the nozzle body, the floating flow diverter assembly comprises a floating ring, a support spring sleeved on the outside of the floating ring, and a sealing baffle fixed in the floating ring, the floating ring is sleeved in the nozzle body, a first annular step is arranged on the outside of the floating ring, a second annular step matched with the first annular step is arranged on the inner wall of the nozzle body, the support spring is located between the first annular step and the second annular step, the sealing baffle is made of rubber material, the sealing baffle divides the space in the floating ring into a third chamber and a fourth chamber, the third chamber is connected to the first chamber, the fourth chamber is connected to the second chamber, a positioning groove is arranged on the upper end of the sealing baffle, a diverter plate is arranged at the nozzle of the nozzle body, the cross section of the diverter plate is a herringbone shape, the diverter plate is located at the lower end of the sealing baffle, and the liquid sprayed from the third chamber and the fourth chamber is sprayed in different directions under the action of the diverter plate.

2. The self-cleaning sewage treatment equipment according to claim 1 is characterized in that: The self-cleaning mechanism also includes a first drive motor, which is arranged on the rear side of the shell, and the output shaft of the first drive motor is fixedly connected to the rear end of the spiral pushing column.

3. The self-cleaning sewage treatment equipment according to claim 2 is characterized in that: The self-cleaning mechanism also includes four second drive motors. A scraper is arranged on the lifting frame. The edge of the scraper is in contact with the inner wall of the sedimentation tank. The four second drive motors are all arranged below the V-shaped plate. The output shafts of the four second drive motors are all fixed with transmission screws. The output shafts of the second drive motors are rotatably connected to the V-shaped plate through sealed bearings. The transmission screws are arranged in a vertical direction. The four transmission screws are respectively threadedly connected to the screw holes at the four corners of the lifting frame.

4. The self-cleaning sewage treatment equipment according to claim 3 is characterized in that: There are two scrapers, both of which are U-shaped scrapers. The two scrapers are offset up and down and partially overlap in space. The two scrapers can scrape the front and rear inner walls of the sedimentation tank twice.

5. The self-cleaning sewage treatment equipment according to claim 1 is characterized in that: The cross section of the first chamber is larger than the cross section of the second chamber.

Images