A pulse aerator and dissolved oxygen control system

Abstract

The invention relates to the technical field of pulse aerators, and specifically discloses a pulse aerator and a dissolved oxygen control system, comprising: an aerator body, the aerator body comprising an air inlet, a water inlet and a nozzle, and a nozzle opening at the end of the nozzle; a scraping mechanism, the scraping mechanism being located at the periphery of the nozzle; a driving mechanism, the driving mechanism being located inside the nozzle; and a polymer component, the polymer component being located inside the nozzle, the polymer component being able to spray high-pressure water spray to the driving mechanism by gathering high-pressure water spray, thereby providing a strong scraping power for the scraping mechanism. Before an operator performs aeration treatment on a water area through the aerator body, the operator first passes air into the aerator body alone, blows and cleans the nozzle, and then passes water alone, and changes the water spraying diameter inside the nozzle through the polymer component, thereby increasing the water pressure. The water pressure pushes a baffle to drive the scraping mechanism to clean the nozzle and the nozzle opening surface through the driving mechanism, thereby facilitating the scraping and cleaning of stubborn impurities attached to the nozzle surface.

Description

Technical Field

[0001] The invention relates to the technical field of pulse aerators, in particular to a pulse aerator and a dissolved oxygen control system. Background Art

[0002] The pulse aerator uses the negative pressure area formed by high-speed water flow to inhale air, mixes water and air through a nozzle, and then sprays it out at high speed to form a large number of tiny bubbles. These bubbles quickly diffuse in the water and oxidize and decompose organic matter in sewage. It is mainly used for aerobic pool oxygen supply, municipal sewage treatment and sludge aerobic digestion, promotes the oxidative decomposition of organic matter and removes harmful gases, reduces the content of harmful substances in water, further improves water quality, and reduces pollution to the environment.

[0003] When the existing pulse aerator is in use, since the aerator works in the sewage environment, the dirt, impurities or suspended matter in the water can easily clog the aerator nozzle. Regular cleaning and maintenance will increase the cost, which is very inconvenient to use. Therefore, we propose a pulse aerator and dissolved oxygen control system. Summary of the invention

[0004] The object of the present invention is to provide a pulse aerator and a dissolved oxygen control system to solve the problem in the above background technology that regular cleaning and maintenance will increase the cost and be very inconvenient in use.

[0005] To achieve the above object, the present invention provides the following technical solutions: a pulse aerator and a dissolved oxygen control system, comprising an aerator body, the aerator body comprising an air inlet, a water inlet and a nozzle, and a nozzle is provided at the end of the nozzle;

[0006] The scraping mechanism is located outside the nozzle and can scrape away dirt outside the nozzle when the aerator body is working;

[0007] The driving mechanism is located inside the nozzle and can provide scraping power to the scraping mechanism through high-pressure water spraying inside the nozzle;

[0008] The polymer component is located inside the nozzle and can provide a strong scraping power for the scraping mechanism by concentrating the high-pressure water spray and spraying it toward the driving mechanism.

[0009] Among them, the driving mechanism includes a baffle arranged inside the nozzle, the baffle is slidably connected to the nozzle, two support frames are fixedly connected to the outer wall of the baffle, through grooves are provided at both ends of the nozzle, the two support frames penetrate the through grooves and are slidably connected to the through grooves, a spring is fixedly connected to the end of the baffle away from the aerator body, a fixed plate is fixedly connected to the end of the spring away from the baffle, two fixed rods are fixedly connected to the outer wall of the fixed plate, and the two fixed rods are fixedly connected to the inner wall of the nozzle.

[0010] Among them, the scraping mechanism includes a scraping ring rotatably connected to the outer periphery of the nozzle, an annular groove is arranged inside the scraping ring, the support frame is located inside the annular groove and is slidably connected to the annular groove, a spiral groove is arranged on the outer wall of the nozzle, a slider is fixedly connected to the inner wall of the scraping ring, the slider is located inside the spiral groove and is slidably connected to the spiral groove, and a scraping member capable of scraping and cleaning the outer wall and nozzle of the nozzle is arranged inside the scraping ring.

[0011] Among them, the scraper includes multiple rotating grooves opened inside the scraper ring, each rotating groove has a rotating rod fixedly connected to the inner wall, the outer periphery of the rotating rod has a scraper plate rotatably connected, the scraper plate has a cleaning brush fixedly connected to one end near the nozzle, the cleaning brush is located inside the rotating groove and is rotatably connected to the rotating groove.

[0012] Among them, the polymer part includes a plurality of inlay grooves opened on the inner wall of the nozzle, the inner wall of the inlay groove is fixedly connected with an elastic plate, the end of the elastic plate close to the baffle is not fixed to the inner wall of the inlay groove, a blocking ring is arranged between the elastic plate and the nozzle, and the blocking ring is slidably connected to the nozzle.

[0013] The elastic plate near the embedding groove gradually becomes thinner in the direction from the aerator body to the nozzle.

[0014] The elastic plate is arc-shaped at one end close to the baffle plate, and the elastic plate is triangular in shape as a whole, and the elastic plate is slightly narrower at one end close to the baffle plate.

[0015] Among them, an air inlet pipe is fixedly connected to the upper end of the aerator body, the air inlet pipe is located outside the air inlet, a butterfly valve is arranged inside the air inlet pipe, a rope is wrapped around the valve stem in the center of the butterfly valve, and the end of the rope away from the valve stem is fixedly connected to the barrier ring.

[0016] Among them, a pulse aerator control system includes:

[0017] An aerator start module, used for sending a start signal to start the aerator body;

[0018] The control center is used to receive the pneumatic signal sent by the aerator start module and send execution instructions;

[0019] An execution module is used to receive and execute execution instructions sent by the control center;

[0020] The control center includes: a signal receiving unit and an instruction sending unit, the signal receiving unit is used to receive the start signal sent by the aerator start module, and the instruction sending unit is used to send an air suction instruction, a water suction instruction and an aeration instruction to the execution module;

[0021] The execution module includes: an air suction control unit and a water suction control unit;

[0022] The air suction control unit is used to open the air inlet valve when receiving the air suction execution command and the aeration command, so as to pass air into the aerator body, and use the air to first blow and clean the dirt and impurities in the nozzle and the nozzle;

[0023] The water absorption control unit is used to absorb water from the water inlet and spray it out from the aerator body when receiving the water absorption execution instruction and the aeration instruction. The high-pressure water flow is sprayed out through the small hole in the center of the aggregated elastic plate. The strong water pressure drives the scraping mechanism through the driving mechanism to scrape and clean the dirt attached to the outside of the nozzle and cannot be blown away.

[0024] The present invention has at least the following beneficial effects:

[0025] When the present invention is in use, before the operator performs aeration treatment in the water area through the aerator body, he first introduces air into the aerator body separately, blows air into the nozzle to clean it, and then passes water separately, and changes the water spraying diameter inside the nozzle through the polymer component, thereby increasing the water pressure. The water pressure pushes the baffle to drive the scraping mechanism through the driving mechanism to clean the nozzle and the nozzle surface, so as to facilitate the scraping and cleaning of stubborn impurities attached to the nozzle surface. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 This is a schematic diagram of the exploded structure of the scraping mechanism of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the nozzle part of the present invention;

[0029] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of the middle A area;

[0030] Figure 5 It is a schematic diagram of the internal structure of the nozzle of the present invention;

[0031] Figure 6 This is a schematic diagram of the scraper plate structure of the present invention;

[0032] Figure 7 This is a schematic diagram of the internal structure of the scraping ring of the present invention;

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the air intake pipe of the present invention;

[0034] Fig. 9 for Figure 8 Schematic diagram of the enlarged structure of the middle B area;

[0035] Fig.10 It is a schematic diagram of the steps of the aerator control system of the present invention.

[0036] In the figure: 1. aerator body; 11. air inlet; 12. water inlet; 13. nozzle; 14. nozzle; 2. scraper mechanism; 21. scraper ring; 22. annular groove; 23. spiral groove; 24. slider; 3. drive mechanism; 31. baffle; 32. support frame; 33. through groove; 34. spring; 35. fixed plate; 36. fixed rod; 4. polymer part; 41. inlay groove; 42. elastic plate; 43. barrier ring; 5. scraper; 51. rotating groove; 52. rotating rod; 53. scraper plate; 54. cleaning brush; 6. air inlet pipe; 61. butterfly valve; 62. valve stem; 63. rope. DETAILED DESCRIPTION

[0037] 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.

[0038] See also Figure 1-10 The present invention provides a technical solution: a pulse aerator and a dissolved oxygen control system, comprising an aerator body 1, the aerator body 1 comprising an air inlet 11, a water inlet 12 and a nozzle 13, and a nozzle 14 is provided at the end of the nozzle 13;

[0039] The scraping mechanism 2 is located at the periphery of the nozzle 13, and the scraping mechanism 2 can scrape the dirt at the periphery of the nozzle 13 when the aerator body 1 is working;

[0040] The driving mechanism 3 is located inside the nozzle 13, and the driving mechanism 3 can provide scraping power for the scraping mechanism 2 through high-pressure water spraying inside the nozzle 13;

[0041] The polymer component 4 is located inside the nozzle 13. The polymer component 4 can spray high-pressure water toward the driving mechanism 3 by concentrating the water, thereby providing a strong scraping power for the scraping mechanism 2;

[0042] When the present invention is in use, before the operator performs aeration treatment in the water area through the aerator body 1, he first introduces air into the aerator body 1 separately, blows and cleans the nozzle 13, and then passes water separately, and changes the water spraying diameter inside the nozzle 13 through the polymer part 4, so as to increase the water pressure. The water pressure pushes the baffle 31 to drive the scraping mechanism 2 through the driving mechanism 3 to clean the surface of the nozzle 13 and the nozzle 14, so as to facilitate the scraping and cleaning of stubborn impurities attached to the surface of the nozzle 13.

[0043] The driving mechanism 3 includes a baffle 31 arranged inside the nozzle 13, the baffle 31 is slidably connected to the nozzle 13, the outer wall of the baffle 31 is fixedly connected to two support frames 32, through grooves 33 are provided at both ends of the nozzle 13, the two support frames 32 penetrate the through grooves 33 and are slidably connected to the through grooves 33, the end of the baffle 31 away from the aerator body 1 is fixedly connected to a spring 34, the end of the spring 34 away from the baffle 31 is fixedly connected to a fixing plate 35, the outer wall of the fixing plate 35 is fixedly connected to two fixing rods 36, and the two fixing rods 36 are fixedly connected to the inner wall of the nozzle 13.

[0044] When the aerator body 1 is started, the water flow inside the aerator body 1 is sprayed toward the baffle 31 through the nozzle 13, thereby pushing the baffle 31 to drive the support frame 32 to move inside the through groove 33. At this time, the baffle 31 compresses the spring 34, and the baffle 31 moves toward the fixed plate 35. The baffle 31 drives the support frame 32 to slide in the through groove 33, which can drive the scraping mechanism 2 at the end of the support frame 32 to scrape and clean the outer periphery of the nozzle 13.

[0045] The scraping mechanism 2 includes a scraping ring 21 rotatably connected to the periphery of the nozzle 13, an annular groove 22 is provided inside the scraping ring 21, a support frame 32 is located inside the annular groove 22 and is slidably connected to the annular groove 22, a spiral groove 23 is provided on the outer wall of the nozzle 13, a slider 24 is fixedly connected to the inner wall of the scraping ring 21, the slider 24 is located inside the spiral groove 23 and is slidably connected to the spiral groove 23. Since the support frame 32 is located inside the annular groove 22 provided on the inner side of the scraping ring 21, when the support frame 32 moves, the support frame 32 drives the annular groove 22 to move around the nozzle 13. Since the spiral groove 23 is provided on the periphery of the nozzle 13, and the slider 24 fixedly connected to the inner side of the scraping ring 21 is located inside the spiral groove 23, the slider 24 moves along the spiral groove 23. At this time, the scraping ring 21 is in a rotating state, and the support frame 32 drives the scraping ring 21 to move. The scraping ring 21 performs a spiral movement around the nozzle 13, which facilitates the scraping and cleaning of the stubborn dirt attached to the outside of the nozzle 13 by the inner side of the scraping ring 21.

[0046] A scraper 5 capable of scraping and cleaning the outer wall of the nozzle 13 and the nozzle 14 is arranged inside the scraper ring 21. The scraper 5 includes a plurality of rotating grooves 51 opened inside the scraper ring 21. A rotating rod 52 is fixedly connected to the inner wall of each rotating groove 51. A scraper plate 53 is rotatably connected to the outer periphery of the rotating rod 52. A cleaning brush 54 is fixedly connected to one end of the scraper plate 53 close to the nozzle 13. The cleaning brush 54 is located inside the rotating groove 51 and is rotatably connected to the rotating groove 51. When the scraper ring 21 spirally moves and extends out of the end of the nozzle 13, the scraper plate 53 located inside the rotating groove 51 is disengaged from the outer wall of the nozzle 13. At this time, the scraper plate 53 rotates around the rotating rod 52. The cleaning brush 54 of the scraper plate 53 close to one end of the nozzle 13 can scrape and clean the nozzle 14, and can clean the nozzle 13 and the nozzle 14 in all directions.

[0047] The polymer part 4 includes a plurality of inlay grooves 41 formed on the inner wall of the nozzle 13. The inner wall of the inlay groove 41 is fixedly connected with an elastic plate 42. The end of the elastic plate 42 close to the baffle plate 31 is not fixed to the inner wall of the inlay groove 41. A barrier ring 43 is provided between the elastic plate 42 and the nozzle 13. The barrier ring 43 is slidably connected to the nozzle 13. When the barrier ring 43 is located inside the nozzle 13 and moves, the barrier ring 43 can squeeze the elastic plate 42 close to the inlay groove 41 and gradually become thinner from the aerator body 1 to the nozzle 14. The force plate 42 is formed by the elastic plate 42 and the elastic plate 42 is brought closer to the center of the barrier ring 43. Since the end of the elastic plate 42 close to the baffle 31 is arc-shaped, and the elastic plate 42 is triangular as a whole, the end of the elastic plate 42 close to the baffle 31 is slightly narrower. The water flow inside the aerator body 1 is sprayed out through the small holes formed by the gathering of multiple elastic plates 42. Under the same pressure, reducing the water spray diameter will increase the water pressure, so that the water flow causes a greater impact force on the baffle 31, which makes it easier for the baffle 31 to compress the spring 34 and drive the support frame 32 to move.

[0048] The upper end of the aerator body 1 is fixedly connected with an air inlet pipe 6, and the air inlet pipe 6 is located outside the air inlet port 11. A butterfly valve 61 is arranged inside the air inlet pipe 6. A rope 63 is wound around the valve stem 62 in the center of the butterfly valve 61. The end of the rope 63 away from the valve stem 62 is fixedly connected to the barrier ring 43. After the aerator body 1 is started, when the butterfly valve 61 of the air inlet pipe 6 is closed, the aerator body 1 absorbs water and sprays it from the nozzle 13. When the butterfly valve 61 is closed, the valve stem 62 is rotated, and the rope 63 around the valve stem 62 is wound and contracted. Since the other end of the rope 63 is fixedly connected to the barrier ring 43, the rope 63 drives the barrier ring 43. The movement will gather the elastic plate 42, thereby changing the water spraying diameter inside the nozzle 13. When the butterfly valve 61 of the air inlet pipe 6 is opened for normal aeration operation, the barrier ring 43 is reset, the internal diameter of the nozzle 13 is restored, the water pressure impacting the baffle 31 is reduced, the spring 34 is reset, and the baffle 31 drives the support frame 32 to move in the reverse direction. At this time, the scraper ring 21 is reversely spirally rotated and reset, and the scraper plate 53 abuts the nozzle and then rotates around the rotating rod 52 to the rotating groove 51, so that the aerator body 1 can aerate the water area, promote the oxidation and decomposition of organic matter and remove harmful gases, improve water quality, and reduce pollution to the environment.

[0049] The pulse aerator body 1 efficiently disperses oxygen into the water by generating strong airflow pulses, thereby increasing the dissolved oxygen content. This efficient oxygen dispersion method enables oxygen to more fully contact organic matter and other oxygen-requiring microorganisms in the water. During the pulse aeration process, the violent movement of bubbles promotes the material exchange between air and liquid. During the initial aeration, the oxygen molecules in the air are retained in the gaps between water molecules. At the same time, after the aeration is completed, due to the change in water pressure, the water molecules squeeze the oxygen molecules therein. At this time, a large amount of oxygen is precipitated, and under the pulsed continuous aeration, the oxygen molecules in the water continue to fuse into the gaps between the water molecules, thereby increasing the fusion effect of the oxygen molecules in the water molecules, thereby accelerating the decomposition and degradation process of pollutants.

[0050] A pulse aerator control system, comprising:

[0051] An aerator start module, used for sending a start signal to start the aerator body 1;

[0052] The control center is used to receive the pneumatic signal sent by the aerator start module and send execution instructions;

[0053] An execution module is used to receive and execute execution instructions sent by the control center;

[0054] The control center includes: a signal receiving unit and an instruction sending unit, the signal receiving unit is used to receive the start signal sent by the aerator start module, and the instruction sending unit is used to send an air suction instruction, a water suction instruction and an aeration instruction to the execution module;

[0055] The execution module includes: an air suction control unit and a water suction control unit;

[0056] The air intake control unit is used to open the valve of the air intake pipe 6 when receiving the air intake execution instruction and the aeration instruction, so as to pass air into the aerator body 1, and use the air to first blow and clean the dirt and impurities in the nozzle 13 and the nozzle 14;

[0057] The water absorption control unit is used to absorb water from the water inlet 12 and spray it out from the aerator body 1 when receiving the water absorption execution instruction and the aeration instruction. The high-pressure water flow is sprayed out through the central small hole of the aggregated elastic plate 42. The strong water pressure drives the scraping mechanism 2 through the driving mechanism 3 to scrape and clean the dirt attached to the outside of the nozzle 13 that cannot be blown away.

[0058] A pulse aerator control system includes the following steps when working:

[0059] Step 1: The aerator start module is used to start the aerator body 1. The aerator start module sends a start signal to the signal module inside the control center. The signal module sends an execution instruction to the execution module through the signal receiving unit and the instruction sending unit. The execution module sends an air intake instruction to the air intake control unit to open the valve of the air inlet pipe 6, pass air into the aerator body 1, and use the air to first blow and clean the dirt and impurities in the nozzle 13 and the nozzle 14;

[0060] After the valve of the air inlet pipe 6 is opened, the barrier ring 43 is not pulled by the rope 63, the inside of the nozzle 13 is in normal caliber, and the air ejected from the aerator body 1 blows and cleans the nozzle 13 and the nozzle 14, first blowing away the debris suspended at the nozzle 14, making it convenient for the aerator body 1 to aerate the water area.

[0061] Step 2: The control center sends a water absorption signal to the signal module. After the signal is processed inside the signal module, the control center sends a water absorption command to the execution module to control the water absorption control unit to start. At the same time, the air suction control unit closes the valve of the air inlet pipe 6. Water is absorbed from the water inlet 12 and sprayed out from the aerator body 1. The high-pressure water flow sprays out through the small hole in the center of the elastic plate 42 after polymerization. The strong water pressure drives the scraping mechanism 2 through the driving mechanism 3 to scrape and clean the dirt attached to the outside of the nozzle 13 that cannot be blown away;

[0062] When the valve of the air intake pipe 6 is closed, the valve stem 62 in the center of the butterfly valve 61 wraps around and pulls the rope 63, so that the rope 63 pulls the barrier ring 43. The barrier ring 43 gathers the elastic plate 42 and leaves a small arc hole. High-pressure water flows out through the small hole. Under the same pressure, reducing the water spray diameter will increase the water pressure. The high-pressure water flow pushes the baffle 31 so that the support frames 32 at both ends of the baffle 31 drive the scraper ring 21 to move and scrape away the stubborn debris on the periphery of the nozzle 13.

[0063] Step 3: After the signal module receives the aeration operation command from the control center, the execution module controls the air intake control unit and the water intake control unit to perform normal aeration operation. The air in the air intake pipe 6 and the water inhaled by the water inlet 12 are mixed and sprayed out inside the aerator body 1 to oxidize and decompose the organic matter.

[0064] After the valve of the air inlet pipe 6 is opened, the butterfly valve 61 opens, and the valve stem 62 in the center of the butterfly valve 61 releases the rope 63, so that the blocking ring 43 is reset, and then the internal diameter of the nozzle 13 returns to normal size, which facilitates the normal aeration operation of the aerator body 1.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pulse aerator, comprising: An aerator body (1), the aerator body (1) comprising an air inlet (11), a water inlet (12) and a nozzle (13), the nozzle (14) being provided at the end of the nozzle (13); It is characterized by: also including: a scraping mechanism (2), the scraping mechanism (2) being located at the periphery of the nozzle (13), and the scraping mechanism (2) being capable of scraping away dirt at the periphery of the nozzle (13) when the aerator body (1) is working; The scraping mechanism (2) comprises a scraping ring (21) rotatably connected to the periphery of the nozzle (13), and an annular groove (22) is provided inside the scraping ring (21); A driving mechanism (3), the driving mechanism (3) being located inside the nozzle (13), and the driving mechanism (3) being capable of providing scraping power for the scraping mechanism (2) by spraying high-pressure water inside the nozzle (13); The driving mechanism (3) comprises a baffle (31) arranged inside the nozzle (13); The baffle (31) is slidably connected to the nozzle (13); the outer wall of the baffle (31) is fixedly connected to two support frames (32); a through groove (33) is provided on the wall of the nozzle (13); the two support frames (32) penetrate the through groove (33) and are slidably connected to the through groove (33); a spring (34) is fixedly connected to one end of the baffle (31) away from the aerator body (1); a fixing plate (35) is fixedly connected to one end of the spring (34) away from the baffle (31); two fixing rods (36) are fixedly connected to the outer wall of the fixing plate (35); and the two fixing rods (36) are fixedly connected to the inner wall of the nozzle (13); The support frame (32) is located inside the annular groove (22) and is slidably connected to the annular groove (22); the outer wall of the nozzle (13) is provided with a spiral groove (23); the inner wall of the scraper ring (21) is fixedly connected with a slider (24); the slider (24) is located inside the spiral groove (23) and is slidably connected to the spiral groove (23); and a scraper (5) capable of scraping and cleaning the outer wall of the nozzle (13) and the nozzle (14) is provided inside the scraper ring (21); A polymer component (4), the polymer component (4) being located inside the spray pipe (13), and the polymer component (4) being capable of spraying high-pressure water toward the driving mechanism (3) by concentrating the water, thereby providing a strong scraping power for the scraping mechanism (2); The polymer component (4) comprises a plurality of inlay grooves (41) formed on the inner wall of the nozzle (13), the inner wall of the inlay groove (41) being fixedly connected to an elastic plate (42), the end of the elastic plate (42) close to the baffle (31) being not fixed to the inner wall of the inlay groove (41), a barrier ring (43) being provided between the elastic plate (42) and the nozzle (13), and the barrier ring (43) being slidably connected to the nozzle (13); An air inlet pipe (6) is fixedly connected to the upper end of the aerator body (1), the air inlet pipe (6) is located outside the air inlet (11), a butterfly valve (61) is arranged inside the air inlet pipe (6), a rope (63) is wound around the valve stem (62) in the center of the butterfly valve (61), and the end of the rope (63) away from the valve stem (62) is fixedly connected to the barrier ring (43).

2. The pulse aerator according to claim 1, characterized in that: The scraper (5) comprises a plurality of rotating grooves (51) formed inside the scraper ring (21); a rotating rod (52) is fixedly connected to the inner wall of each rotating groove (51); a scraper plate (53) is rotatably connected to the outer periphery of the rotating rod (52); a cleaning brush (54) is fixedly connected to one end of the scraper plate (53) close to the nozzle (13); the cleaning brush (54) is located inside the rotating groove (51) and is rotatably connected to the rotating groove (51).

3. The pulse aerator according to claim 1, characterized in that: The elastic plate (42) has a side close to the embedding groove (41) that gradually becomes thinner in a direction from the aerator body (1) to the nozzle (14).

4. The pulse aerator according to claim 1, characterized in that: The end of the elastic plate (42) close to the baffle plate (31) is arc-shaped, and the elastic plate (42) is triangular in shape as a whole. The end of the elastic plate (42) close to the baffle plate (31) is slightly narrow.

5. A pulse aerator dissolved oxygen control system, used to control a pulse aerator according to any one of claims 1 to 4, characterized in that: include: An aerator start module, used for sending a start signal to start the aerator body (1); The control center is used to receive the pneumatic signal sent by the aerator start module and send execution instructions; An execution module is used to receive and execute execution instructions sent by the control center; The control center includes: a signal receiving unit and an instruction sending unit, the signal receiving unit is used to receive the start signal sent by the aerator start module, and the instruction sending unit is used to send an air suction instruction, a water suction instruction and an aeration instruction to the execution module; The execution module includes: an air suction control unit and a water suction control unit; An air intake control unit, for opening the valve of the air intake pipe (6) upon receiving an air intake execution instruction and an aeration instruction, allowing air to enter the aerator body (1), and using the air to first blow and clean dirt and impurities in the nozzle (13) and the nozzle (14); The water absorption control unit is used to absorb water from the water inlet (12) and spray it out from the aerator body (1) when receiving the water absorption execution instruction and the aeration instruction, and the high-pressure water flow is sprayed out through the central small hole of the aggregated elastic plate (42). The strong water pressure drives the scraping mechanism (2) through the driving mechanism (3) to scrape and clean the dirt attached to the outside of the nozzle (13) that cannot be blown away.

Images