Sewage treatment device for sewage treatment

Abstract

The invention relates to the technical field of sewage treatment equipment, and discloses a sewage treatment device for sewage treatment, which comprises an aeration tank, a fan arranged outside the aeration tank, a gas pipeline arranged at the bottom of the aeration tank, a plurality of nozzles arranged on the gas pipeline, and a bracket arranged inside the aeration tank, a fixing plate is mounted on the support, a positioning rod is slidably inserted into the fixing plate, a reciprocating plate is arranged at the top end of the positioning rod and located over the nozzle, a reciprocating spring sleeves the positioning rod, the other end of the reciprocating spring is connected with the fixing plate, and when the reciprocating plate is located at the top end, the reciprocating plate ascends under the pushing of gas; and the reciprocating plate descends under the pulling of the reciprocating spring. In the moving process of the brush plate, sludge on the spray head is removed, so that automatic cleaning of the spray head is realized, manpower is saved, the aeration tank does not need to be emptied, the spray head can be synchronously cleaned during sewage treatment, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and specifically relates to a sewage treatment device for sewage treatment. Background Technique

[0002] Urban sewage treatment is a process of removing pollutants in sewage through a series of physical, chemical, and biological methods to make it meet the discharge or reuse standards. During sewage treatment, pretreatment is first carried out, and large particulate solids are removed with a grille. Then the sewage stays in the sedimentation tank, and suspended solids form sludge through gravitational sedimentation, while the scum is scraped off. Then biological treatment is carried out, where the sewage is mixed with activated sludge, and microorganisms decompose organic matter. Subsequently, the sludge is separated in the secondary sedimentation tank. Then advanced treatment is carried out, and suspended solids and organic matter are further removed through sand filtration or activated carbon filtration, and pathogens are killed using chlorine, ultraviolet light, or ozone. Finally, the treated water is discharged or reused.

[0003] In the existing aeration tank required for sewage treatment, in order to make air and activated sludge fully contact, spray heads with small pores are often installed on the air pipes in the aeration tank. After long-term use of the spray heads, the spray heads will be blocked by activated sludge. At this time, it is necessary to drain the sewage in the aeration tank and manually clean the spray heads. However, this method not only consumes manpower but also affects the sewage treatment efficiency. Therefore, it does not meet the existing requirements, and for this reason, we propose a sewage treatment device for sewage treatment. Summary of the Invention

[0004] The present invention provides a sewage treatment device for sewage treatment, which has the beneficial effect of setting a reciprocating plate above the spray head. When the reciprocating plate moves up and down, it drives a brush plate to brush the spray head, realizing automatic cleaning of the spray head, saving manpower, and being able to clean the spray head synchronously during sewage treatment, improving the sewage treatment efficiency. It solves the problem mentioned in the above background technique that in the existing aeration tank required for sewage treatment, in order to make air and activated sludge fully contact, spray heads with small pores are often installed on the air pipes in the aeration tank. After long-term use of the spray heads, the spray heads will be blocked by activated sludge. At this time, it is necessary to drain the sewage in the aeration tank and manually clean the spray heads. However, this method not only consumes manpower but also affects the sewage treatment efficiency.

[0005] The present invention provides the following technical solution: A sewage treatment device for sewage treatment includes an aeration tank. A blower is arranged outside the aeration tank. A gas pipeline is arranged at the bottom of the aeration tank. The gas pipeline is communicated with the air outlet hole of the blower. A plurality of spray heads are arranged on the gas pipeline. A bracket is arranged inside the aeration tank. A fixing plate is installed on the bracket. A positioning rod is slidably inserted into the fixing plate. A reciprocating plate is arranged at the top of the positioning rod. The reciprocating plate is located directly above the spray head. A reciprocating spring is sleeved on the positioning rod, and the other end of the reciprocating spring is connected to the fixing plate;

[0006] When the reciprocating plate is at the top, the reciprocating plate rises under the push of gas. When the reciprocating plate is at the bottom, the reciprocating plate descends under the pull of the reciprocating spring;

[0007] A brush plate is arranged on the fixed plate, and the brush plate is in transmission connection with the reciprocating plate.

[0008] As an optional scheme of the sewage treatment device for sewage treatment according to the present invention, wherein: a vertical plate is installed on the fixed plate, a through groove is opened on the vertical plate, a sliding rod is slidably installed in the through groove, one end of the sliding rod is connected to the brush plate, a limiting plate is installed at the other end of the sliding rod, a compression spring is arranged on the side of the limiting plate, and the other end of the compression spring is connected to the vertical plate;

[0009] A trapezoidal plate is arranged at the bottom end of the reciprocating plate, and the hypotenuse of the trapezoidal plate intermittently abuts against the sliding rod.

[0010] As an optional scheme of the sewage treatment device for sewage treatment according to the present invention, wherein: a plurality of bubble holes are opened on the trapezoidal plate, and when the reciprocating plate descends, bubbles overflow from the bubble holes.

[0011] As an optional scheme of the sewage treatment device for sewage treatment according to the present invention, wherein: a first water passing hole is opened on the reciprocating plate, a first rotating plate for closing the first water passing hole is hinged on the reciprocating plate. When the reciprocating plate is at the top, the first rotating plate is opened. When the reciprocating plate is at the bottom, the first rotating plate is closed.

[0012] As an optional scheme of the sewage treatment device for sewage treatment according to the present invention, wherein: a first sliding groove is arranged on the reciprocating plate, a slider is slidably installed in the first sliding groove, a pull rod is hinged on the slider, and the other end of the pull rod is hinged to the first rotating plate;

[0013] A one-way compression spring is installed on the slider, the other end of the one-way compression spring is connected to the reciprocating plate, a guide plate is arranged on the fixed plate, a guiding groove is opened on the guide plate, a guiding rod is slidably installed in the guiding groove, a connecting rod is installed on the side of the guiding rod, and the other end of the connecting rod is connected to the slider.

[0014] As an optional scheme of the sewage treatment device for sewage treatment according to the present invention, wherein: the guiding groove includes a rising groove, a horizontal groove, a descending groove and an inclined groove, the rising groove, the horizontal groove, the descending groove and the inclined groove are connected in sequence, a one-way plate is hinged at the bottom end of the rising groove, a first torsion spring is arranged on the one-way plate, one end of the first torsion spring is connected to the one-way plate, and the other end of the first torsion spring is fixedly connected to the guide plate.

[0015] As an alternative embodiment of the sewage treatment device for sewage treatment according to the present invention, wherein: a second chute is provided on the fixed plate, a guiding block is slidably installed in the second chute, a moving block is provided on the side of the guiding block, a scraping plate for scraping activated sludge is slidably installed at the bottom of the moving block, and the scraping plate is in transmission connection with the reciprocating plate.

[0016] As an alternative embodiment of the sewage treatment device for sewage treatment according to the present invention, wherein: a return spring is provided on the fixed plate, and the other end of the return spring is connected to the moving block;

[0017] A pulling rope is connected between the moving block and the reciprocating plate, a guiding wheel is rotatably installed on the fixed plate, the guiding wheel is a roller provided with a groove, and the pulling rope is wound in the groove of the guiding wheel.

[0018] As an alternative embodiment of the sewage treatment device for sewage treatment according to the present invention, wherein: a rack is provided at the bottom of the fixed plate, a rotating shaft is installed on the moving block, a gear for meshing with the rack is rotatably installed on the rotating shaft, a rocker is installed at one end of the rotating shaft, a reciprocating rod is hinged at the other end of the rocker, and the reciprocating rod is hinged to the scraping plate.

[0019] As an alternative embodiment of the sewage treatment device for sewage treatment according to the present invention, wherein: a second water passing hole is provided on the scraping plate, a second rotating plate for closing the second water passing hole is hinged on the scraping plate, a second torsion spring is provided on the second rotating plate, one end of the second torsion spring is connected to the second rotating plate, and the other end of the second torsion spring is connected to the scraping plate;

[0020] A ratchet is provided on the gear, a pawl is hinged on the rotating shaft, and the pawl is movably engaged with the ratchet.

[0021] The present invention has the following beneficial effects:

[0022] 1. For the sewage treatment device used for sewage treatment, when the reciprocating plate moves to the bottom end, the guide rod slides from the descending groove into the inclined groove. At this time, the guide rod drives the first rotating plate to close the first water passing hole through the connecting rod, slider and pull rod. At this time, the bubble thrust received by the bottom end of the reciprocating plate is greater than the pulling force of the reciprocating spring. Therefore, the reciprocating plate moves upward. When the reciprocating plate moves to the top end, the guide rod arranged in the guiding groove also moves to the top end of the ascending groove. At this time, under the action of the one-way compression spring, the slider drives the guide rod through the connecting rod, so that the guide rod slides from the ascending groove into the horizontal groove. At the same time, the slider pulls the first rotating plate through the pull rod to open the first water passing hole. At this time, since the area of the reciprocating plate decreases, the bubble thrust received by the reciprocating plate decreases, and at this time, the thrust received by the reciprocating plate is less than the pulling force of the reciprocating spring. Therefore, the reciprocating plate moves downward. When the reciprocating plate moves downward, the reciprocating plate drives the trapezoidal plate to move downward. The hypotenuse of the trapezoidal plate abuts against the sliding rod. Therefore, the sliding rod drives the brush plate to move. During the movement of the brush plate, the sludge on the nozzle is removed, thus realizing the automatic cleaning of the nozzle, saving manpower, not requiring the emptying of the aeration tank, and the nozzle can be cleaned synchronously during sewage treatment, improving the sewage treatment efficiency.

[0023] 2. For the sewage treatment device used for sewage treatment, when the reciprocating plate moves upward, the reciprocating plate drives the moving block and the scraper to move through the pull rope. When the moving block moves, the gear rotates because it meshes with the rack. The gear drives the rocker to make a circular motion, and the rocker drives the reciprocating rod to make a reciprocating swing. Further, the scraper reciprocates under the action of the reciprocating rod. Therefore, when the scraper reciprocates, it can stir the water flow at the bottom of the aeration tank, prevent the activated sludge from accumulating at the bottom of the aeration tank, and is conducive to the full combination of the activated sludge and the organic matter in the sewage. While the scraper moves to scrape out the sludge in the aeration tank, it also disturbs the water flow in the aeration tank, making it difficult for the activated sludge to accumulate at the bottom of the aeration tank and preventing the activated sludge from accumulating and blocking the nozzle, further increasing the practicality of this device. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the reciprocating plate of the present invention.

[0026] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of part A in it.

[0027] Figure 4 It is a schematic diagram of the structure of the guide plate of the present invention.

[0028] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of part B in it.

[0029] Figure 6 This is a schematic structural diagram of the scraper of the present invention.

[0030] Figure 7 This is a schematic installation structure diagram of the gear and rack of the present invention.

[0031] Figure 8 For the present invention Figure 7 An enlarged structural diagram of part C in the present invention.

[0032] Figure 9 This is a schematic sectional structure diagram of the present invention.

[0033] Figure 10 For the present invention Figure 9 An enlarged structural diagram of part D in the present invention.

[0034] Figure 11 For the present invention Figure 9 An enlarged structural diagram of part E in the present invention.

[0035] In the figure: 101, aeration tank; 102, fan; 103, gas pipeline; 104, spray head; 201, bracket; 202, fixing plate; 203, positioning rod; 204, reciprocating plate; 205, first water passing hole; 206, first rotating plate; 207, brush plate; 208, guide plate; 209, trapezoidal plate; 210, guiding groove; 211, guide rod; 212, connecting rod; 213, one-way plate; 214, bubble hole; 215, sliding rod; 216, limiting plate; 217, reciprocating spring; 218, compression spring; 220, vertical plate; 221, through groove; 222, slider; 223, pull rod; 224, one-way compression spring; 225, first sliding groove; 226, first torsion spring; 2011, rising groove; 2012, horizontal groove; 2013, descending groove; 2014, inclined groove; 301, scraper; 303, second water passing hole; 304, pull rope; 305, second sliding groove; 306, gear; 307, second torsion spring; 308, guiding block; 309, moving block; 310, return spring; 311, guiding wheel; 312, second rotating plate; 313, rack; 314, rocker; 315, reciprocating rod; 316, rotating shaft; 317, ratchet; 318, ratchet pawl. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: This embodiment is intended to promote the solution of the existing aeration tank required for sewage treatment. In order to make the air and activated sludge fully contact, a nozzle with fine air holes is often installed on the air pipe in the aeration tank. After the nozzle is used for a long time, the nozzle will be blocked by the activated sludge. At this time, it is necessary to empty the sewage in the aeration tank and clean the nozzle manually. However, this method not only consumes manpower, but also affects the sewage treatment efficiency. Please refer to Figures 1 to 11 A sewage treatment device for sewage treatment includes an aeration tank 101, a fan 102 is arranged outside the aeration tank 101, a gas pipeline 103 is arranged at the bottom of the aeration tank 101, the gas pipeline 103 is connected to the gas outlet of the fan 102, a plurality of nozzles are arranged on the gas pipeline 103, a bracket 201 is arranged inside the aeration tank 101, a fixing plate 202 is installed on the bracket 201, a positioning rod 203 is slidably inserted on the fixing plate 202, and a reciprocating Plate 204, the reciprocating plate 204 is located directly above the nozzle 104, a reciprocating spring 217 is sleeved on the positioning rod 203, the other end of the reciprocating spring 217 is connected to the fixed plate 202, when the reciprocating plate 204 is at the top, the reciprocating plate 204 rises under the push of the gas, when the reciprocating plate 204 is at the bottom, the reciprocating plate 204 descends under the pull of the reciprocating spring 217, a brush plate 207 for cleaning the nozzle 104 is provided on the fixed plate 202, and the brush plate 207 is transmission-connected to the reciprocating plate 204.

[0038] For details, please refer to Figure 2 A vertical plate 220 is installed on the fixed plate 202, and a through groove 221 is opened on the vertical plate 220. A slide bar 215 is slidably installed in the through groove 221. One end of the slide bar 215 is connected to the brush plate 207, and a limit plate 216 is installed on the other end of the slide bar 215. A compression spring 218 is arranged on the side of the limit plate 216, and the other end of the compression spring 218 is connected to the vertical plate 220. A trapezoidal plate 209 is arranged at the bottom end of the reciprocating plate 204, and the hypotenuse of the trapezoidal plate 209 is connected to the slide bar 2 15 intermittently contacts, when the reciprocating plate 204 moves downward, the reciprocating plate 204 drives the trapezoidal plate 209 to move downward, and the hypotenuse of the trapezoidal plate 209 contacts the slide bar 215, so the slide bar 215 drives the brush plate 207 to move, and the sludge on the nozzle 104 is cleared during the movement of the brush plate 207. When the reciprocating plate 204 moves upward, under the action of the compression spring 218, the limit plate 216, the slide bar 215 and the brush plate 207 are reset.

[0039] It should be noted that a plurality of bubble holes 214 are provided on the trapezoidal plate 209. When the reciprocating plate 204 descends, bubbles overflow from the bubble holes 214, thereby preventing the trapezoidal plate 209 from blocking the bubbles output by the nozzle 104, so that the bubbles can fully contact with the activated sludge in the aeration tank 101.

[0040] In order to reduce the resistance when the reciprocating plate 204 descends, a first water passing hole 205 is formed in the reciprocating plate 204. A first rotating plate 206 for closing the first water passing hole 205 is hinged on the reciprocating plate 204. When the reciprocating plate 204 is at the top, the first rotating plate 206 is opened. When the reciprocating plate 204 is at the bottom, the first rotating plate 206 is closed. It should be noted that when the reciprocating plate 204 is at the bottom, since the first water passing hole 205 is closed by the first rotating plate 206, at this time, the bubble thrust received at the bottom end of the reciprocating plate 204 is greater than the pulling force of the reciprocating spring 217. Therefore, the reciprocating plate 204 moves upward. When the reciprocating plate 204 is at the top, the first water passing hole 205 is opened. At this time, since the area of the reciprocating plate 204 decreases, the bubble thrust received by the reciprocating plate 204 decreases. And at this time, the thrust received by the reciprocating plate 204 is less than the pulling force of the reciprocating spring 217. Therefore, the reciprocating plate 204 moves downward.

[0041] Specifically, see Figure 2 、 Figure 3 A first sliding groove 225 is provided on the reciprocating plate 204. A slider 222 is slidably installed in the first sliding groove 225. A pull rod 223 is hinged on the slider 222. The other end of the pull rod 223 is hinged to the first rotating plate 206. A one-way compression spring 224 is installed on the slider 222. The other end of the one-way compression spring 224 is connected to the reciprocating plate 204. A guide plate 208 is provided on the fixed plate 202. A guiding groove 210 is formed in the guide plate 208. A guiding rod 211 is slidably installed in the guiding groove 210. A connecting rod 212 is installed on the side of the guiding rod 211. The other end of the connecting rod 212 is connected to the slider 222.

[0042] In addition, please refer to Figure 4 、 Figure 5, the guiding groove 210 includes a rising groove 2011, a horizontal groove 2012, a descending groove 2013 and an inclined groove 2014. The rising groove 2011, the horizontal groove 2012, the descending groove 2013 and the inclined groove 2014 are connected in sequence. A one-way plate 213 is hinged to the bottom end of the rising groove 2011. A first torsion spring 226 is arranged on the one-way plate 213. One end of the first torsion spring 226 is connected to the one-way plate 213, and the other end of the first torsion spring 226 is fixedly connected to the guiding plate 208. The one-way plate 213 enables the guiding rod 211 to only enter the rising groove 2011 from the inclined groove 2014 unidirectionally. Therefore, when the reciprocating plate 204 moves to the top end, the guiding rod 211 arranged in the guiding groove 210 also moves to the top end of the rising groove 2011. At this time, under the action of the one-way compression spring 224, the slider 222 drives the guiding rod 211 through the connecting rod 212, so that the guiding rod 211 slides from the rising groove 2011 into the horizontal groove 2012. At the same time, the slider 222 pulls the first rotating plate 206 through the pull rod 223 to open the first water passing hole 205. When the reciprocating plate 204 moves to the bottom end, the guiding rod 211 slides from the descending groove 2013 to the inclined groove 2014. At this time, the guiding rod 211 drives the first rotating plate 206 through the connecting rod 212, the slider 222 and the pull rod 223 to close the first water passing hole 205.

[0043] In this embodiment: when the reciprocating plate 204 moves to the bottom end, the guiding rod 211 slides from the descending groove 2013 to the inclined groove 2014. At this time, the guiding rod 211 drives the first rotating plate 206 through the connecting rod 212, the slider 222 and the pull rod 223 to close the first water passing hole 205. At this time, the bubble thrust received by the bottom end of the reciprocating plate 204 is greater than the pulling force of the reciprocating spring 217. Therefore, the reciprocating plate 204 moves upward. When the reciprocating plate 204 moves to the top end, the guiding rod 211 arranged in the guiding groove 210 also moves to the top end of the rising groove 2011. At this time, under the action of the one-way compression spring 224, the slider 222 drives the guiding rod 211 through the connecting rod 212, so that the guiding rod 211 slides from the rising groove 2011 into the horizontal groove 2012. At the same time, the slider 222 pulls the first rotating plate 206 through the pull rod 223 to open the first water passing hole 205. At this time, since the area of the reciprocating plate 204 decreases, the bubble thrust received by the reciprocating plate 204 decreases. And at this time, the thrust received by the reciprocating plate 204 is less than the pulling force of the reciprocating spring 217. Therefore, the reciprocating plate 204 moves downward. When the reciprocating plate 204 moves downward, the reciprocating plate 204 drives the trapezoidal plate 209 to move downward. The hypotenuse of the trapezoidal plate 209 abuts against the sliding rod 215. Therefore, the sliding rod 215 drives the brush plate 207 to move. During the movement of the brush plate 207, the sludge on the nozzle 104 is removed, thus realizing the automatic cleaning of the nozzle. Moreover, no external additional energy power is required, which is energy-saving and environment-friendly, saves manpower, and does not need to empty the aeration tank 101. The nozzle cleaning can be carried out synchronously during the sewage treatment, improving the sewage treatment efficiency.

[0044] Embodiment 2: This embodiment is intended to promote the solution of the problem that activated sludge will precipitate at the bottom of the aeration tank, which is not conducive to the full contact with organic matter in the water after precipitation, reducing the sewage treatment efficiency. In addition, the activated sludge will cover the nozzle when it precipitates to a certain thickness, causing the nozzle to be blocked. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figures 1 to 11 A No. 2 chute 305 is provided on the fixed plate 202, a guide block 308 is slidably installed in the No. 2 chute 305, a moving block 309 is provided on the side of the guide block 308, a scraper 301 for scraping activated sludge is slidably installed at the bottom of the moving block 309, and the scraper 301 is transmission-connected to the reciprocating plate 204.

[0045] For details, please refer to Figure 6 A return spring 310 is provided on the fixed plate 202, and the other end of the return spring 310 is connected to the moving block 309. A pull rope 304 is connected between the moving block 309 and the reciprocating plate 204. A guide wheel 311 is rotatably installed on the fixed plate 202. The guide wheel 311 is configured as a roller with a groove. The pull rope 304 is wound in the groove of the guide wheel 311. It should be noted that when the reciprocating plate 204 moves upward, the reciprocating plate 204 pulls the moving block 309 and the scraper 301 to move through the pull rope 304. When the reciprocating plate 204 moves downward, the moving block 309 and the scraper 301 are reset under the action of the return spring 310.

[0046] Also, please refer to Figure 7 A rack 313 is provided at the bottom of the fixed plate 202, a rotating shaft 316 is installed on the moving block 309, a gear 306 for meshing with the rack 313 is rotatably installed on the rotating shaft 316, a rocker 314 is installed at one end of the rotating shaft 316 away from the gear 306, a reciprocating rod 315 is hinged at the other end of the rocker 314, and the reciprocating rod 315 is hinged to the scraper 301. Specifically, when the moving block 309 moves, the gear 306 meshes with the rack 313. The gear 306 rotates, the gear 306 drives the rotating shaft 316 and the rocker 314 to make circular motion, the rocker 314 drives the reciprocating rod 315 to swing back and forth, and the scraper 301 reciprocates under the action of the reciprocating rod 315. Therefore, the scraper 301 can stir the water flow at the bottom of the aeration tank 101 when reciprocating, preventing the activated sludge from gathering at the bottom of the aeration tank 101, which is conducive to the full combination of the activated sludge and the organic matter in the sewage.

[0047] It should be noted that the power for the reciprocating plate 204 to move downward in this embodiment comes from the tension of the reciprocating spring 217 and the pull rope 304. Therefore, the greater the tension of the pull rope 304, the more conducive it is to the rapid downward movement of the reciprocating plate 204. When the reciprocating plate 204 moves downward rapidly, the moving speed of the brush plate 207 is also correspondingly accelerated, so the cleaning effect of the brush plate 207 is better. Therefore, please refer toFigure 7 , Figure 9 , Figure 10 , Figure 11 , a second water passing hole 303 is formed in the scraping plate 301, a second rotating plate 312 for closing the second water passing hole 303 is hinged to the scraping plate 301, a second torsion spring 307 is arranged on the second rotating plate 312, one end of the second torsion spring 307 is connected to the second rotating plate 312, the other end of the second torsion spring 307 is connected to the scraping plate 301. When the scraping plate 301 returns to its original position, the second water passing hole 303 is opened, the resistance of the scraping plate 301 is reduced, and the tension of the pulling rope 304 correspondingly increases, so that the reciprocating plate 204 quickly moves downward. In addition, a ratchet 317 is arranged on the gear 306, a pawl 318 is hinged to the rotating shaft 316, and the pawl 318 is movably engaged with the ratchet 317. Specifically, when the scraping plate 301 scrapes sludge, the pawl 318 is engaged with the ratchet 317, and the gear 306 and the ratchet 317 drive the rotating shaft 316 and the rocker 314 to do circular motion, and the rocker 314 drives the reciprocating rod 315 to do reciprocating swing. Further, the scraping plate 301 reciprocates under the action of the reciprocating rod 315. When the scraping plate 301 returns, the pawl 318 is not engaged with the ratchet 317. Therefore, although the gear 306 rotates, it does not drive the rotating shaft 316 to rotate through the ratchet 317. Therefore, the scraping plate 301 does not do reciprocating motion when returning, ensuring that the second water passing hole 303 is always open, which is beneficial to reducing the resistance of the scraping plate 301 when returning.

[0048] In this embodiment: when the reciprocating plate 204 moves upward, the reciprocating plate 204 drives the moving block 309 and the scraping plate 301 to move through the pulling rope 304. When the moving block 309 moves, the gear 306 rotates because it meshes with the rack 313. The gear 306 drives the rocker 314 to do circular motion, and the rocker 314 drives the reciprocating rod 315 to do reciprocating swing. Further, the scraping plate 301 reciprocates under the action of the reciprocating rod 315. Therefore, when the scraping plate 301 reciprocates, it can stir the water flow at the bottom of the aeration tank 101, prevent the activated sludge from accumulating at the bottom of the aeration tank 101, and is beneficial to the full combination of the activated sludge and the organic matter in the sewage. While the scraping plate 301 moves to scrape out the sludge in the aeration tank 101, it disturbs the water flow in the aeration tank 101, and it is difficult for the activated sludge to accumulate at the bottom of the aeration tank 101, preventing the activated sludge from accumulating and blocking the nozzle 104, further increasing the practicability of the device.

[0049] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0050] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A sewage treatment device for sewage treatment, comprising an aeration tank (101), a fan (102) is arranged outside the aeration tank (101), a gas pipeline (103) is arranged at the bottom of the aeration tank (101), the gas pipeline (103) is communicated with the gas outlet of the fan (102), and a plurality of nozzles are arranged on the gas pipeline (103), characterized in that: A bracket (201) is provided inside the aeration tank (101), a fixing plate (202) is installed on the bracket (201), a positioning rod (203) is slidably inserted on the fixing plate (202), a reciprocating plate (204) is provided at the top of the positioning rod (203), the reciprocating plate (204) is located directly above the nozzle (104), a reciprocating spring (217) is sleeved on the positioning rod (203), and the other end of the reciprocating spring (217) is connected to the fixing plate (202); When the reciprocating plate (204) is located at the top end, the reciprocating plate (204) rises under the push of the gas, and when the reciprocating plate (204) is located at the bottom end, the reciprocating plate (204) descends under the pull of the reciprocating spring (217); A brush plate (207) is provided on the fixed plate (202), and the brush plate (207) is drivingly connected to the reciprocating plate (204).

2. A sewage treatment device for sewage treatment according to claim 1, characterized in that: A vertical plate (220) is installed on the fixed plate (202), a through groove (221) is provided on the vertical plate (220), a sliding rod (215) is slidably installed in the through groove (221), one end of the sliding rod (215) is connected to the brush plate (207), and a limiting plate (216) is installed on the other end of the sliding rod (215), a compression spring (218) is provided on the side of the limiting plate (216), and the other end of the compression spring (218) is connected to the vertical plate (220); A trapezoidal plate (209) is provided at the bottom end of the reciprocating plate (204), and the inclined edge of the trapezoidal plate (209) intermittently contacts the sliding rod (215).

3. A sewage treatment device for sewage treatment according to claim 2, characterized in that: The trapezoidal plate (209) is provided with a plurality of bubble holes (214), and when the reciprocating plate (204) descends, bubbles overflow from the bubble holes (214).

4. A sewage treatment device for sewage treatment according to claim 1, characterized in that: The reciprocating plate (204) is provided with a first water hole (205), and the reciprocating plate (204) is hinged with a first rotating plate (206) for closing the first water hole (205); when the reciprocating plate (204) is located at the top end, the first rotating plate (206) is opened, and when the reciprocating plate (204) is located at the bottom end, the first rotating plate (206) is closed.

5. A sewage treatment device for sewage treatment according to claim 4, characterized in that: The reciprocating plate (204) is provided with a first slide groove (225), a slider (222) is slidably installed in the first slide groove (225), a pull rod (223) is hinged on the slider (222), and the other end of the pull rod (223) is hinged to the first rotating plate (206); A one-way compression spring (224) is installed on the slider (222), and the other end of the one-way compression spring (224) is connected to the reciprocating plate (204). A guide plate (208) is provided on the fixed plate (202), and a guide groove (210) is provided on the guide plate (208). A guide rod (211) is slidably installed in the guide groove (210), and a connecting rod (212) is installed on the side of the guide rod (211), and the other end of the connecting rod (212) is connected to the slider (222).

6. A sewage treatment device for sewage treatment according to claim 5, characterized in that: The guide groove (210) comprises an ascending groove (2011), a horizontal groove (2012), a descending groove (2013) and an inclined groove (2014); the ascending groove (2011), the horizontal groove (2012), the descending groove (2013) and the inclined groove (2014) are connected in sequence; a one-way plate (213) is hinged at the bottom end of the ascending groove (2011); a first torsion spring (226) is arranged on the one-way plate (213); one end of the first torsion spring (226) is connected to the one-way plate (213); and the other end of the first torsion spring (226) is fixedly connected to the guide plate (208).

7. A sewage treatment device for sewage treatment according to claim 1, characterized in that: A No. 2 slide groove (305) is arranged on the fixed plate (202), a guide block (308) is slidably installed in the No. 2 slide groove (305), a moving block (309) is arranged on the side of the guide block (308), a scraper (301) for scraping activated sludge is slidably installed at the bottom of the moving block (309), and the scraper (301) is connected to the reciprocating plate (204) in a driving manner.

8. A sewage treatment device for sewage treatment according to claim 7, characterized in that: A return spring (310) is provided on the fixed plate (202), and the other end of the return spring (310) is connected to the moving block (309); A pull rope (304) is connected between the moving block (309) and the reciprocating plate (204), a guide wheel (311) is rotatably mounted on the fixed plate (202), the guide wheel (311) is configured as a roller with a groove, and the pull rope (304) is wound around the groove of the guide wheel (311).

9. A sewage treatment device for sewage treatment according to claim 8, characterized in that: A rack (313) is arranged at the bottom of the fixed plate (202), a rotating shaft (316) is installed on the moving block (309), a gear (306) for meshing with the rack (313) is rotatably installed on the rotating shaft (316), a rocker (314) is installed at one end of the rotating shaft (316), a reciprocating rod (315) is hinged at the other end of the rocker (314), and the reciprocating rod (315) is hinged to the scraper (301).

10. A sewage treatment device for sewage treatment according to claim 9, characterized in that: The scraper (301) is provided with a second water hole (303), the scraper (301) is hinged with a second rotating plate (312) for closing the second water hole (303), the second rotating plate (312) is provided with a second torsion spring (307), one end of the second torsion spring (307) is connected to the second rotating plate (312), and the other end of the second torsion spring (307) is connected to the scraper (301); The gear (306) is provided with a ratchet (317), the rotating shaft (316) is hinged with a ratchet pawl (318), and the ratchet pawl (318) is movably engaged with the ratchet (317).

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