Pulse flow generation device and aeration system

Abstract

The utility model relates to the technical field of aeration equipment, in particular to a pulse flow generating device and an aeration system.The pulse flow generating device comprises a gas storage part, a driving part and a valve clack assembly; the air storage part is provided with an air inlet part, an air storage cavity and an air outlet part, the air inlet part and the air outlet part are both communicated with the air storage cavity, the air inlet part is used for being communicated with an air blower, and the air outlet part is used for being communicated with an aeration pipeline; the valve clack assembly is movably arranged in the air storage cavity and comprises a ventilation part and a blocking part which are connected with each other, and the driving part is in transmission connection with the valve clack assembly so as to drive the valve clack assembly to be switched between the blocking state and the communicating state according to a preset period. According to the pulse flow generation device and the aeration system provided by the invention, the aeration efficiency and the aeration uniformity are improved by periodically controlling the release of the gas, and compared with a continuous aeration mode, the pulse aeration can reduce the waste of the gas and reduce the energy consumption.

Description

Technical Field

[0001] This application relates to the field of aeration equipment technology, and in particular to a pulse flow generator and aeration system. Background Technology

[0002] Aeration plays a crucial role in activated sludge treatment technology. It involves introducing air or oxygen-enriched gas into the wastewater, providing the necessary dissolved oxygen for microorganisms and promoting homogenization of the mixture, thereby improving the efficiency and quality of wastewater treatment.

[0003] A typical aeration system mainly consists of a blower, aeration pipes, and microporous aerators. The blower, as the air source, is electrically driven and uses mechanical energy to deliver air into the air pipes. The aeration pipes then transport the air supplied by the blower to the aeration devices.

[0004] However, current aeration systems typically introduce a continuous, constant airflow from a blower directly into the aeration pipes. Under the impact of this continuous, constant airflow, the vibration of the microporous aerator will attenuate, and sludge and microbial flocs can even clog the micropores. This can lead to uneven bubble size and distribution. Larger bubbles will rise rapidly to the water surface, reducing the contact time between oxygen and water, thus lowering oxygen dissolution efficiency. To maintain the same aeration effect, the blower may need to provide more airflow to compensate for the decreased aeration efficiency. This will increase energy consumption, hindering energy conservation and cost reduction. Furthermore, the continuous airflow impact and vibration attenuation can accelerate wear on the aerator and its connecting components. This shortens the equipment's lifespan and increases the frequency and cost of maintenance and replacement. Utility Model Content

[0005] The purpose of this application is to provide a pulse flow generator and an aeration system to address, to some extent, the technical problems existing in the prior art. These problems include: existing aeration systems typically introduce a continuous, constant airflow from a blower directly into the aeration pipe; under the impact of this continuous, constant airflow, the vibration of the microporous aerator will attenuate; and sludge and microbial flocs may even clog the micropores of the aerator, leading to uneven bubble size and distribution, reducing oxygen dissolution efficiency; requiring greater energy consumption to maintain the aeration effect; and accelerated wear of the aerator and its connecting parts, which shortens the equipment's service life and increases the frequency and cost of maintenance and replacement.

[0006] According to a first aspect of this application, a pulse flow generating device is provided for connecting a blower and an aeration pipeline in an aeration system. The pulse flow generating device includes an air storage unit, a driving unit, and a valve assembly.

[0007] The gas storage section is provided with an air inlet, a gas storage cavity, and an air outlet. The air inlet and the air outlet are both connected to the gas storage cavity. The air inlet is used to connect to the blower, and the air outlet is used to connect to the aeration pipeline.

[0008] The valve assembly is movably disposed within the gas storage cavity. The valve assembly includes a venting part and a blocking part connected to each other. The driving part is pulsatorically connected to the valve assembly to drive the valve assembly to switch between a blocking state and a connecting state according to a predetermined cycle.

[0009] When the valve assembly is in the blocked state, the blocking part blocks the air outlet to cut off the connection between the air storage cavity and the aeration pipeline;

[0010] When the valve assembly is in the connected state, the vent is connected to the air outlet.

[0011] Preferably, the gas storage unit is provided with a plurality of gas outlets, and the aeration system includes a plurality of aeration pipes, with each gas outlet connected to one of the aeration pipes.

[0012] Preferably, the gas storage section is a closed cylinder, and the closed cylinder extends along a first direction;

[0013] The air intake is located at one end of the air storage unit in the first direction.

[0014] Preferably, the valve assembly includes a valve body, and the venting part and the sealing part are alternately connected along the circumferential direction of the closed cylinder, and the valve body is a connecting body formed by the venting part and the sealing part;

[0015] The outer wall of the sealing part can be fitted to the inner wall of the closed cylinder;

[0016] The air outlet is disposed on the side wall of the closed cylinder, and the valve body and the air outlet are aligned in the first direction.

[0017] The driving unit is a rotary driving device that drives the valve body to rotate within the gas storage cavity about the axis of the closed cylinder.

[0018] Preferably, the valve disc assembly further includes a drive shaft extending along the first direction;

[0019] The drive unit is located on the outside of the gas storage unit on the side opposite to the air intake unit; the drive shaft passes through the gas storage unit to connect the valve body and the drive unit.

[0020] Preferably, the system further includes a sealed bearing, which is disposed at the end of the gas storage unit opposite to the air inlet, and the drive shaft passes through the gas storage unit via the sealed bearing.

[0021] Preferably, the valve disc body comprises:

[0022] The annular cylindrical tube has a venting part that extends radially through the tube, and a sealing part that is the portion of the annular cylindrical tube without a venting part.

[0023] Multiple connecting ribs extend along the radial direction, with one end of each connecting rib converging and connecting at the axial position of the annular cylinder, and the other end of each connecting rib being fixed to the inner wall of the annular cylinder.

[0024] Preferably, the gas storage section further includes a limiting protrusion that protrudes into the gas storage space relative to the inner wall of the gas storage cavity;

[0025] The air outlet is provided with limiting protrusions on both sides in the first direction, so that the valve body is limited between the two limiting protrusions.

[0026] Preferably, the limiting protrusion is continuously arranged around the circumference of the gas storage space.

[0027] According to a second aspect of this application, an aeration system is provided, including the aforementioned blower, the aforementioned aeration pipeline, and the pulse flow generating device described in any of the aforementioned technical solutions. Therefore, it has all the beneficial technical effects of the pulse flow generating device, which will not be repeated here.

[0028] Compared with the prior art, the beneficial effects of this application are as follows:

[0029] The pulse flow generator provided in this application allows gas from a blower to enter a gas storage chamber via an inlet. Driven by a drive unit, a valve assembly switches between a blocked state and a connected state, thereby periodically controlling the gas discharge from the outlet (i.e., when the permeable part of the valve assembly moves to a state connected to the outlet, the gas storage chamber discharges gas into the aeration pipeline; during the process of the permeable part of the valve assembly moving out and the blocked part moving into and out of the outlet, the gas discharge volume from the gas storage chamber into the aeration pipeline gradually decreases; until the blocked part completely blocks the outlet, cutting off the connection between the gas storage chamber and the aeration pipeline; during the process of the blocked part of the valve assembly moving out and the permeable part moving into and out of the outlet, the gas discharge volume from the gas storage chamber into the aeration pipeline gradually increases, repeating the above four processes to achieve pulsed gas supply from the blower to the aeration pipeline). By periodically controlling the gas release, the aeration efficiency and uniformity are improved. Compared with continuous aeration, pulse aeration can reduce gas waste and energy consumption.

[0030] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the cross-sectional structure obtained by cutting along the plane containing the axis of the pulse flow generator provided in the embodiments of this application;

[0033] Figure 2 A side view of the valve body assembly provided in an embodiment of this application;

[0034] Figure 3 A front view of the valve body assembly provided in an embodiment of this application;

[0035] Figure 4 A side view of a valve body assembly provided in another embodiment of this application;

[0036] Figure 5 A front view of a valve body assembly provided in another embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the aeration system provided in an embodiment of this application.

[0038] Figure label:

[0039] 1-Valve disc assembly; 11-Valve disc body; 101-Blocking part; 102-Ventilating part; 111-Annular cylinder; 112-Connecting rib; 12-Drive shaft; 2-Air storage part; 20-Air storage cavity; 21-Air inlet part; 22-Air outlet part; 23-Limiting protrusion; 3-Sealed bearing; F1-First direction; F2-Second direction; F3-Third direction. Detailed Implementation

[0040] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0041] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0042] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] The following reference Figures 1 to 6 This application describes a pulse flow generating device and an aeration system according to some embodiments.

[0046] See Figures 1 to 5As shown, an embodiment of the first aspect of this application provides a pulse flow generator for connecting a blower and an aeration pipeline in an aeration system. The pulse flow generator includes an air storage section 2, a drive section, and a valve assembly 1. The air storage section 2 is provided with an air inlet 21, an air storage cavity 20, and an air outlet 22. Both the air inlet 21 and the air outlet 22 are connected to the air storage cavity 20. The air inlet 21 is used to communicate with the blower, and the air outlet 22 is used to communicate with the aeration pipeline. The valve assembly 1 is movably disposed within the air storage cavity 20. The valve assembly 1 includes a permeable part 102 and a blocking part 101 connected to each other. The drive section is driven to the valve assembly 1 to drive the valve assembly 1 to switch between a blocking state and a connected state according to a predetermined cycle. When the valve assembly 1 is in the blocking state, the blocking part 101 blocks the air outlet 22 to cut off the connection between the air storage cavity 20 and the aeration pipeline. When the valve assembly 1 is in the connected state, the vent 102 is connected to the vent 22.

[0047] According to the pulse flow generating device provided by the above technical features, the gas from the blower enters the gas storage chamber 20 through the air inlet 21. Under the drive of the drive unit, the valve assembly 1 switches between a blocking state and a connecting state, thereby periodically controlling the gas to be discharged from the outlet 22 (that is, when the venting part 102 of the valve assembly 1 moves to the state of connecting with the outlet 22, the gas storage part 2 discharges gas into the aeration pipeline; during the process of the venting part 102 of the valve assembly 1 moving out and the blocking part 101 moving into the outlet 22, the gas discharge volume of the gas storage part 2 into the aeration pipeline gradually decreases; until the blocking part 101 completely blocks the outlet 22, cutting off the connection between the gas storage chamber 20 and the aeration pipeline; during the process of the blocking part 101 of the valve assembly 1 moving out and the venting part 102 moving into the outlet 22, the gas discharge volume of the gas storage part 2 into the aeration pipeline gradually increases, and the above four processes are repeated to realize the blower's control of the aeration. The gas pipeline provides pulsed gas, which periodically controls the release of gas, transforming the continuous and constant airflow output from the existing blower into a pulsed intermittent aeration mode through a pulse flow generator. This pulsed intermittent aeration increases the outlet pressure and velocity of the aerator. The intermittent impact of the airflow on the water flow enhances the cutting effect between the airflow and water flow, accelerating the turbulence of the water body and thus speeding up the renewal rate of the liquid film at the gas-liquid interface, increasing the oxygen transfer rate. Simultaneously, the air outlet causes membrane vibration, reducing the diameter of the generated bubbles and allowing them to have a larger surface area for contact with the liquid, further improving the oxygen transfer rate. Frequent pore expansion and contraction and the instantaneous acceleration of the outlet airflow velocity effectively prevent clogging of the micropores by sludge and microbial flocs, improving aeration efficiency and uniformity. Compared to continuous aeration, pulsed aeration reduces gas waste and energy consumption.

[0048] Preferably, such as Figure 1As shown in the figure, an example of the above-mentioned gas storage unit 2 being provided with two gas outlets 22 is illustrated. Correspondingly, the aeration system described below may include two aeration pipelines, with each gas outlet 22 connected to one aeration pipeline, so as to enable the same blower to supply gas to the two aeration pipelines at the same time, thereby effectively improving the utilization rate of the gas supplied by the blower, increasing the energy utilization rate, and reducing the energy consumption of a single aeration pipeline.

[0049] However, this is not the only option. The number of air outlets 22 in the air storage unit 2 can be adjusted according to the number of aeration pipes in the aeration system. For example, the number of air outlets 22 in the air storage unit 2 can be 1, 3, 4, 5 or more.

[0050] Preferably, such as Figure 1 As shown, the gas storage section 2 can be a closed cylinder extending along the first direction F1, which not only facilitates the movement of the valve assembly 1 within the gas storage section 2, but also facilitates the processing and manufacturing of the gas storage section 2.

[0051] However, it is not limited to this. As long as the valve assembly 1 can move within the gas storage section 2, the gas storage section 2 can also be other rotating chambers.

[0052] like Figures 1 to 5 As shown in the figure, F1 can be an example of the first direction mentioned above. For ease of description, two mutually perpendicular directions on the plane perpendicular to the first direction F1 are defined as the second direction F2 and the third direction F3, respectively. F2 shown in the figure can be an example of the second direction mentioned above, and F3 shown in the figure can be an example of the third direction mentioned above.

[0053] Preferably, such as Figure 1 As shown, the air intake 21 can be provided at one end of the air storage unit 2 in the first direction F1.

[0054] In an embodiment, preferably, such as Figures 1 to 5 As shown, the valve assembly 1 may include a valve body 11, and the venting part 102 and the sealing part 101 are alternately connected along the circumferential direction of the closed cylinder. The valve body 11 is a connecting body formed by the venting part 102 and the sealing part 101.

[0055] Preferably, such as Figure 1 , Figure 2 and Figure 4As shown, the outer wall of the sealing part 101 can fit against the inner wall of the closed cylinder, and the air outlet 22 is disposed on the side wall of the closed cylinder. The valve body 11 and the air outlet 22 are aligned in the first direction F1 to facilitate the switching of the valve assembly 1 between the sealing state and the connected state, and to ensure the tightness of the sealing part 101 in sealing the gas storage part 2. Correspondingly, the driving part can be a rotary driving device to drive the valve body 11 to rotate within the gas storage cavity 20 about the axis of the closed cylinder, thereby realizing the switching of the valve assembly 1 between the sealing state and the connected state.

[0056] Optionally, the aforementioned rotary drive device can be a rotary motor. Preferably, the rotary motor can have a speed regulation function to adjust the switching cycle between the blocking state and the connecting state by changing the rotational speed of the rotary motor.

[0057] Preferably, such as Figures 1 to 5 As shown, the valve disc assembly 1 may further include a drive shaft 12 extending along the first direction F1, and the valve disc body 11 may be connected to the drive unit via the drive shaft 12.

[0058] Preferably, the drive unit is located on the outside of the air storage unit 2 on the side opposite to the air intake unit 21, which not only facilitates the maintenance and control of the drive unit, but also reduces the space occupied by the drive unit in the air storage unit 2.

[0059] Preferably, such as Figure 1 As shown, the above-mentioned pulse flow generating device may also include a sealed bearing 3. The sealed bearing 3 is disposed at one end of the gas storage section 2 opposite to the air inlet section 21. The drive shaft 12 passes through the gas storage section 2 via the sealed bearing 3 to ensure the smooth rotation of the drive shaft 12 and the sealing of the gas storage section 2.

[0060] In an embodiment, preferably, such as Figures 1 to 3 An example is shown of the valve disc body 11, including an annular cylinder 111 and a plurality of connecting ribs 112. Specifically, as shown... Figure 3 As shown, the vent 102 can be a vent hole that penetrates the annular cylinder 111 in the radial direction, and the sealing part 101 can be the part of the annular cylinder 111 without a vent hole. The connecting ribs 112 can extend in the radial direction, and one end of multiple connecting ribs 112 converges and connects at the axial position of the annular cylinder 111. The other end of the connecting ribs 112 is fixed to the inner wall of the annular cylinder 111. This not only improves the strength of the valve assembly 1 through the connecting ribs 112, but also allows the connecting ribs 112 to be connected to the drive shaft 12, so that the drive shaft 12 can be positioned on the axis of the annular cylinder 111.

[0061] It should be noted that the number of vent holes provided on the annular cylinder 111 can be adaptively adjusted according to the switching cycle between the blocked state and the connected state. Preferably, the number of vent holes provided on the annular cylinder 111 can be an even number, and the even number of vent holes can be symmetrically arranged about the axis of the annular cylinder 111 to ensure the rotational balance of the valve disc body 11.

[0062] However, it is not limited to this. The valve disc assembly 1 is not limited to the form of the annular cylinder 111. As long as the valve disc assembly 1 can switch between blocking and connecting the air outlet 22, the valve disc body 11 can also have other structures, for example... Figure 4 and Figure 5 The example shown shows multiple sector-shaped columns spaced apart along the circumferential direction of the gas storage section 2. Correspondingly, the sector-shaped columns can be the aforementioned sealing section 101, and the interval between adjacent sector-shaped columns is formed as the aforementioned venting section 102.

[0063] In an embodiment, such as Figure 1 As shown, preferably, the gas storage section 2 may further include a limiting protrusion 23. The limiting protrusion 23 protrudes into the gas storage space relative to the inner wall of the gas storage space. The gas outlet section 22 is provided with limiting protrusions 23 on both sides in the first direction F1, so that the valve body 11 is limited between the two limiting protrusions 23. This not only effectively prevents the valve body 11 from moving in the first direction F1 during rotation, but also reduces the amount of air leakage when the valve assembly 1 is in a blocked state through the mechanical seal between the limiting protrusion 23 and the valve body 11.

[0064] Furthermore, the aforementioned limiting protrusion 23 can be continuously arranged around the circumference of the gas storage space, which not only improves the limiting stability of the limiting protrusion 23 on the valve disc body 11, but also improves the mechanical sealing between the limiting protrusion 23 and the valve disc body 11.

[0065] like Figure 1 As shown, taking the above-mentioned valve body 11 as an example of an annular cylinder 111 structure, preferably, the above-mentioned limiting protrusion 23 may include a limiting connecting portion and an extending wrapping portion, wherein the limiting connecting portion is fixedly connected to the inner wall of the gas storage portion 2, the extending wrapping portion is connected to one end of the limiting connecting portion away from the inner wall of the gas storage portion 2, and the extending wrapping portion extends from the edge of the annular cylinder 111 to the middle of the annular cylinder 111 along the first direction F1, so as to form a limiting guide groove between the limiting protrusion 23 and the inner wall of the gas storage portion 2 for the edge of the annular cylinder 111 to be engaged, so that the edge of the annular cylinder 111 is completely wrapped by the limiting guide groove, so as to further improve the mechanical sealing between the limiting protrusion 23 and the valve body 11.

[0066] See Figure 6The second aspect of this application also provides an aeration system, including the blower, the aeration pipeline and the pulse flow generator described in any of the above embodiments, and thus has all the beneficial technical effects of the pulse flow generator, which will not be repeated here.

[0067] Preferably, the blower is connected to the air inlet 21 of the pulse flow generator.

[0068] Preferably, the aeration pipeline is connected to the air outlet 22 of the pulse flow generator.

[0069] Optionally, the aeration system described above may include one of the aforementioned aeration pipelines.

[0070] Preferably, such as Figure 6 As shown, the aeration system described above may include multiple aeration pipelines.

[0071] Preferably, such as Figure 6 As shown, the aeration system may also include an aeration unit, and the end of each aeration pipe away from the pulse flow generator may be connected to the aeration unit.

[0072] Correspondingly, such as Figure 6 As shown, the aeration system can include multiple aeration units, that is, each of the above-mentioned aeration pipes can be connected to one aeration unit. In other words, the pulse flow generator in the aeration system can be connected to multiple aeration units one by one through the corresponding aeration pipes, which can improve the operating efficiency of the system and reduce the energy consumption of each aeration unit.

[0073] Preferably, such as Figure 6 As shown, the aeration system may further include an aerator connected to the aeration unit to generate delivery bubbles into the material to be treated.

[0074] Preferably, such as Figure 6 As shown, each aeration unit can be connected to multiple aerators simultaneously to improve aeration efficiency and increase oxygen transfer area. Based on the features described above, with... Figures 1 to 6 The following description uses the aeration system shown as an example to illustrate the working principle of the aeration system:

[0075] Driven by electricity, the blower draws in air through its inlet, pressurizes it, and outputs it through its outlet. The air then enters the pulse flow generator via the main pipeline. The pulse flow generator is equipped with an air inlet 21 and several air outlets 22. The air inlet 21 is connected to the main air pipeline at the blower outlet, and the air outlets 22 are connected to the aeration units via aeration pipelines. The continuous air entering the pulse flow generator is periodically and sequentially distributed to the several air outlets 22 within the generator, forming a pulsed airflow. This pulsed airflow is then transported to each aeration unit through the aeration pipeline, and then supplies oxygen to multiple aerators downstream of the aeration units. Oxygen is intermittently released into the reaction tank through the aerators.

[0076] The aeration system provided based on the above technical features has the following advantages:

[0077] 1. Compared with existing continuous aeration, pulse intermittent aeration, under the same conditions, further enhances the turbulence of water flow, accelerates the renewal rate of liquid film at the gas-liquid interface, improves oxygen transfer rate, and improves oxygen transfer efficiency.

[0078] 2. Pulse aeration can release and close air more frequently, which causes the membrane to vibrate, reducing the diameter of the generated bubbles and giving the bubbles a larger surface area to contact the water, thereby further improving the oxygen transfer rate.

[0079] 3. Pulse aeration can frequently expand and contract the pores on the membrane of the aerator, which can effectively reduce the clogging of the micropores by sludge and bacteria.

[0080] 4. Compared with existing continuous aeration, pulse intermittent aeration achieves the same oxygenation effect, has higher power efficiency, and can reduce the total amount of aeration.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A pulse stream generating device, characterized by, The application relates to a pulse flow generating device for connecting a blower and an aeration pipeline in an aeration system. The air storage part is provided with an air inlet part, an air storage cavity and an air outlet part, the air inlet part and the air outlet part are communicated with the air storage cavity, the air inlet part is used for being communicated with the blower, and the air outlet part is used for being communicated with the aeration pipeline. The valve assembly is movably arranged in the air storage cavity, the valve assembly comprises a gas permeable part and a plugging part which are connected with each other, and the driving part is in transmission connection with the valve assembly so as to drive the valve assembly to switch between a plugging state and a communication state according to a predetermined cycle. When the valve assembly is in the plugging state, the plugging part plugs the air outlet part so as to cut off the communication between the air storage cavity and the aeration pipeline. When the valve assembly is in the communication state, the gas permeable part is communicated with the air outlet part.

2. The pulse stream generating device of claim 1, wherein, The air storage part is provided with a plurality of air outlet parts, and the aeration system comprises a plurality of aeration pipelines, each air outlet part is docked with one aeration pipeline.

3. The pulse flow generating device according to claim 1, wherein the air storage part is a closed cylinder which extends along a first direction; the air inlet part is arranged at one end of the air storage part in the first direction.

4. The pulse flow generating device according to claim 3, wherein the valve assembly comprises a valve body, the gas permeable part and the plugging part are alternately connected along the circumferential direction of the closed cylinder, and the valve body is a connecting body formed by the gas permeable part and the plugging part; the outer wall of the plugging part can be arranged in close contact with the inner wall of the closed cylinder; the air outlet part is arranged on the side wall of the closed cylinder, and the valve body and the air outlet part are arranged in alignment in the first direction; the driving part is a rotary driving device for driving the valve body to rotate in the air storage cavity with the axis of the closed cylinder as the axis.

5. The pulse flow generating device according to claim 4, wherein the valve assembly further comprises a driving shaft which extends along the first direction; the driving part is arranged outside the air storage part on the side opposite to the air inlet part, the driving shaft penetrates through the air storage part to connect the valve body and the driving part.

6. The pulse stream generating device of claim 5, wherein, a sealing bearing is further arranged at one end of the air storage part opposite to the air inlet part, and the driving shaft penetrates through the air storage part through the sealing bearing.

7. The pulsed stream generating device of claim 4, wherein, the valve body comprises: a ring cylinder, the gas permeable part is a gas permeable hole which penetrates through the ring cylinder in a radial direction, and the plugging part is a part of the ring cylinder which is not provided with the gas permeable hole; a plurality of connecting ribs which extend along the radial direction, one end of the plurality of connecting ribs converges at the position of the axis of the ring cylinder and is connected, and the other end of the connecting rib is fixed to the inner wall of the ring cylinder.

8. The pulsed stream generating device of claim 4, wherein, the air storage part further comprises a limiting protrusion which protrudes into the air storage space relative to the inner wall of the air storage cavity; The two sides of the air outlet part in the first direction are provided with the limiting protrusions, so that the valve body is limited between the two limiting protrusions.

9. The pulse stream generating device of claim 8, wherein, The limiting protrusions are continuously arranged along the circumferential direction of the gas storage space.

10. An aeration system characterized by, The pulse flow generating device of any one of claims 1 to 9, the air blower, and the aeration pipeline.

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