CN220951399U - MBR pulse aeration device and corresponding MBR pulse aeration system - Google Patents

Abstract

The MBR pulse aeration device provided by the utility model is characterized in that a pulse rotation device formed by combining a rotation shaft and blades is arranged in a closed structure formed by a hollow columnar shell and an upper sealing plate and a lower sealing plate, and an air inlet pipe and an air outlet pipe are connected to the closed structure. The gas entering from the inlet pipe and exiting from the outlet pipe pushes the vane and the rotating shaft to rotate when flowing in the closed structure. When the blade is pushed to the outlet pipe opening or even the inlet pipe opening by the airflow, the air flow rate leaving the closed structure from the outlet pipe is reduced or even temporarily zeroed, and the air flow rate leaving the closed structure from the outlet pipe is not restored until the blade leaves the outlet pipe opening or even the inlet pipe opening due to motion inertia. Therefore, the continuously transmitted gas can be converted into the output gas with the pulse change flow, so that the MBR pulse aeration device with simple structure and low cost can be used for realizing the pulse cleaning of the MBR membrane component.

Description

MBR pulse aeration device and corresponding MBR pulse aeration system

Technical Field

The utility model relates to the field of water treatment membrane materials, in particular to an MBR pulse aeration device and a corresponding MBR pulse aeration system, wherein the MBR pulse aeration device uses a mechanical structure capable of periodically changing gas flow.

Background

In recent years, in the field of water treatment Membrane materials, membrane Bioreactors (MBR) are widely used for treating industrial wastewater, domestic sewage, and the like. Currently, membrane modules used in commercial MBR products are mainly flat plate membranes, hollow fiber membranes, tubular membranes, curtain membranes, etc. Among them, flat membranes which are easy to clean, have good mechanical stability, strong anti-pollution performance, long life, good membrane surface flushing conditions, lower energy consumption and low maintenance cost have been widely used.

Aeration is an important ring when an MBR membrane module is used for treating sewage, wastewater and the like, so that on one hand, the reaction effect of the MBR membrane module is enhanced, and on the other hand, the blocking of the MBR membrane module is reduced. In the aspect of supplying the gas required by the aeration process, three methods of continuous stable gas supply, cyclic aeration and pulse aeration basically exist, and experimental tests and specific application experience show that the cyclic aeration or the pulse aeration is a mode which saves energy consumption and buffers membrane pollution.

In the prior art, two main methods for realizing cyclic aeration or pulse aeration are adopted. One is to use an electrically operated valve and control system to regulate the flow of gas through the valve by actively and alternately closing or opening the valve, thereby achieving pulsed or cyclic gas supply. The other is to use a speed reducer to drive a rotating device positioned in the space surrounded by the shell and the cover plate so as to adjust the flow of the gas flowing through the surrounding space, thereby realizing pulse gas supply or circulating gas supply. Of course, there are other hardware devices that can be used to regulate the flow of gas, but it is always necessary to use some kind of drive assembly to move some kind of hardware assembly to actively regulate the gas passage or gas supply, thereby intermittently or cyclically circulating the gas.

However, these prior arts are all unavoidable to encounter the following problems. First, whether an electric valve or other movable hardware components are used to adjust the gas channel, the gas channel is repeatedly opened and closed, so that damage can occur in the morning and evening, if the gas channel is not found and repaired in time, the pulse change of the gas flow can be out of control, and the electric valve needs to consume electric power and any hardware components need to be moved. Secondly, when using speed reducer or other drive assembly, mechanical operation process can take place to damage early and late, if not in time discover with repair, pulse air feed can take place pulse out of control and can't accurate aeration or even can't aeration't problem to the problem such as power is bigger and high-power consumption also is difficult to avoid.

Based on this, there is a continuing need for improvements whereby the MBR membrane module is aerated more efficiently.

Disclosure of utility model

The utility model provides an MBR pulse aeration device and a corresponding MBR pulse aeration system. Here, in one closed structure, there is one or more blades connected to the rotating shaft. The gas entering the enclosure from the inlet duct flows inside the enclosure and pushes the vanes to rotate about the axis of rotation before exiting the enclosure from the outlet duct. When any vane is separated from the opening of any air inlet pipe or even the opening of any air inlet pipe, the air flow channel between the air inlet pipe and the air outlet pipe is not affected by any vane, and the continuously-entering air can continuously leave. However, when a vane is moved to the opening of a gas outlet duct or even the opening of a gas inlet duct, the gas flow duct is restricted or even completely cut off, so that the gas flow leaving the enclosure is significantly reduced or even interrupted. Then, when the vane leaves the opening of the air outlet pipe or even the opening of the air inlet pipe due to movement inertia, the air flow pipeline is not affected by any vane again, so that the continuously entering air also continuously leaves. Obviously, the MBR pulse aeration device provided by the utility model can provide the gas with pulse flow, and the corresponding MBR pulse aeration system can use the gas with pulse flow to carry out aeration treatment on one or more MBR membrane components.

The utility model provides an MBR pulse aeration device, which comprises a hollow cylindrical shell, a first sealing plate, a second sealing plate, at least one air inlet pipe, at least one air outlet pipe and a pulse rotation device. The first sealing plate and the second sealing plate are respectively positioned at two opposite ends of the hollow columnar shell and are mutually contacted with the hollow columnar shell, so that a closed structure is formed. Here, the different inlet pipes are respectively connected to different parts of the closed structure, so that gas can enter the closed structure from at least one inlet pipe, and the different outlet pipes are respectively connected to different parts of the closed structure, so that gas can leave the closed structure from at least one outlet pipe. The pulse rotation device comprises a rotation shaft and at least one blade positioned on the rotation shaft. Further, the rotary shaft is positioned in the middle of the hollow columnar shell, and the opposite ends of the rotary shaft are respectively contacted with the first sealing plate and the second sealing plate.

Optionally, at least one of the air inlet pipe penetrates through the hollow cylindrical shell to enter the inside of the closed structure, and at least one of the air outlet pipe penetrates through the hollow cylindrical shell to enter the inside of the closed structure.

Optionally, at least one air inlet pipe penetrates through the first sealing plate to enter the interior of the closed structure, at least one air inlet pipe penetrates through the second sealing plate to enter the interior of the closed structure, at least one air outlet pipe penetrates through the first sealing plate to enter the interior of the closed structure, or at least one air outlet pipe penetrates through the second sealing plate to enter the interior of the closed structure.

Alternatively, when the distance between the opening of either air inlet pipe and the surface of the rotating shaft is not smaller than the dimension of either blade in the direction perpendicular to the axial direction of the rotating shaft, or the distance between the opening of either air outlet pipe and the surface of the rotating shaft is not smaller than the dimension of either blade in the direction perpendicular to the axial direction of the rotating shaft.

Optionally, when the hollow cylindrical housing is penetrated, the distance between the opening of any air inlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft, or the distance between the opening of any air outlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft.

Alternatively, when the distance between the opening of any air inlet pipe and the surface of the rotating shaft is not greater than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft, or the distance between the opening of any air outlet pipe and the surface of the rotating shaft is not greater than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft.

Alternatively, only one blade may be provided to temporarily close each inlet pipe opening and each outlet pipe opening in sequence by rotating around the rotation axis. But there may also be a plurality of vanes to increase the frequency at which each inlet pipe opening and each outlet pipe opening are periodically closed. The profile of the blade is only required to be large enough to be closed when approaching each air inlet pipe opening and each air outlet pipe opening, one common simple profile is in a crescent shape, and the width of the crescent can be adjusted according to requirements.

The utility model provides an MBR pulse aeration system, which comprises an MBR die pool, an MBR pulse aeration device, a gas source and at least one gas pipeline. Here, the MBR membrane tank is used for placing one or more MBR membrane components, the gas source is used for providing gas for cleaning the one or more MBR membrane components, at least one gas pipeline is used for transmitting the gas from the gas source to the MBR pulse aeration device and from the MBR pulse aeration device to the MBR membrane tank, and the MBR pulse aeration device is used for converting the gas continuously provided by the gas source into the gas with pulse flow. The MBR pulse aeration device comprises a hollow cylindrical shell, a first sealing plate, a second sealing plate, at least one air inlet pipe, at least one air outlet pipe and a pulse rotation device. The first sealing plate and the second sealing plate are respectively positioned at two opposite ends of the hollow columnar shell and are mutually contacted with the hollow columnar shell, so that a closed structure is formed. Here, the different inlet pipes are respectively connected to different parts of the closed structure, so that gas can enter the closed structure from at least one inlet pipe, and the different outlet pipes are respectively connected to different parts of the closed structure, so that gas can leave the closed structure from at least one outlet pipe. The pulse rotation device comprises a rotation shaft and at least one blade positioned on the rotation shaft. In addition, the at least one gas inlet pipe is connected to a gas source, and one end of any gas line is connected to a gas outlet pipe and the other end is connected to the MBR membrane tank.

Optionally, the gas pipeline and the first sealing plate inside the MBR pulse aeration device are integrated together with the gas outlet pipe into a flat plate with one or more holes, so that the gas passing through the MBR pulse aeration device is directly conveyed to the MBR die pool from the at least one hole, and the one or more holes are corresponding to the one or more MBR membrane components in a staggered way, thereby enabling each MBR membrane component to be fully subjected to pulse aeration treatment.

Alternatively, at least one of the air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not smaller than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air outlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air outlet pipe and the surface of the rotating shaft is not smaller than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft.

Optionally, at least one of the air inlet pipe penetrates through the first sealing plate and enters the inside of the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air inlet pipe penetrates through the second sealing plate and enters the inside of the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air outlet pipe penetrates through the first sealing plate and enters the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft. Or at least one air outlet pipe penetrates through the second sealing plate and enters the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft.

Alternatively, only one blade may be provided to temporarily close each inlet pipe opening and each outlet pipe opening in sequence by rotating around the rotation axis. But there may also be a plurality of vanes to increase the frequency at which each inlet pipe opening and each outlet pipe opening are periodically closed. The profile of the blade is only required to be large enough to be closed when approaching each air inlet pipe opening and each air outlet pipe opening, one common simple profile is in a crescent shape, and the width of the crescent can be adjusted according to requirements.

The present utility model has at least the following advantageous effects. Firstly, the structure is simple, and only the hollow columnar shell, the first sealing plate and the second sealing plate which are used for forming the closed structure and the pulse rotating device which is positioned inside the closed structure and consists of a rotating shaft and at least one blade are provided. Obviously, the utility model does not use a speed reducer, an electric valve and the like, and does not use a driving assembly or movable hardware and the like, and has a simpler and more simplified structure compared with the prior art. Second, using the gas flow to drive the rotation of the blades about the axis of rotation is easy to achieve. Particularly, when the MBR membrane module is cleaned, gas is used, whether the gas is continuously flowing or intermittently flowing, so that the utility model directly uses a driving pulse rotation device of the flowing gas to adjust the flow rate of the conveyed gas along the way that the gas is conveyed to the MBR membrane module from a gas source. Therefore, the utility model does not need extra device and extra power to drive the pulse rotation device, and can make the extra power loss zero. Furthermore, the utility model does not limit the outline and the size of the blade, and only when the blade is pushed to the opening of a specific air outlet pipe or even a specific air inlet pipe by flowing air, the blade can block or even completely block the air from entering or exiting the specific air outlet pipe or even the specific air inlet pipe. Therefore, by changing the outline and the size of the blade, the flow of the gas from the gas inlet pipe to the gas outlet pipe through the pulse rotating device can be changed by the blade, so that the gas with the same flow rate and the same flow velocity from the gas inlet pipe can be adjusted into the pulse gas with different pulse flow rates, and then the pulse gas is transmitted to the cleaning treatment MBR membrane component through the gas outlet pipe.

Drawings

Fig. 1A to 1E are schematic diagrams of abstracts, showing the basic architecture and operation mechanism of an MBR pulse aeration device according to a first embodiment of the present utility model.

Fig. 2A to 2B are schematic diagrams of abstracts, showing the basic architecture and one possible variation of the MBR pulse aeration system according to a second embodiment of the present utility model.

Description of the component reference numerals

101 … Hollow columnar shell

102 … First seal plate

103 … Second seal plate

104 … Air inlet pipe

105 … Air outlet pipe

106 … Pulse rotating device

1061 … Rotating shaft

1062 … Blade

201 … MBR (Membrane bioreactor) die pool

202 … MBR pulse aeration device

203 … Gas source

204 … Gas line

2051 … Holes

2052 … Flat plate

Detailed Description

The following detailed description of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and such range or value should be understood to include values approaching those range or value. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.

The utility model provides an MBR pulse aeration device and a corresponding MBR pulse aeration system. The device is used for converting the continuously inflowing gas into the gas with pulse output, or converting the gas with stable flow into the gas with periodic fluctuation flow, thereby performing the treatment of cleaning and the like on the MBR membrane component.

As shown in fig. 1A and 1B, a first embodiment of the present utility model provides an MBR pulse aeration device, which includes a hollow cylindrical housing 101, a first sealing plate 102, a second sealing plate 103, an air inlet pipe 104, an air outlet pipe 105, and a pulse rotation device 106. Here, the first sealing plate 102 and the second sealing plate 103 are respectively located at opposite ends of the hollow cylindrical housing 101 and are in contact with the hollow cylindrical housing 101, so that the three together form a closed structure surrounding an inner space. Here, the gas inlet pipe 104 is connected to the hollow cylindrical housing 101 such that gas can enter the interior space of the closed structure from the gas inlet pipe 104, and the gas outlet pipe 105 is connected to the hollow cylindrical housing 101 such that gas can leave the interior space of the closed structure from the gas outlet pipe 105. Here, the pulse rotation device 106 includes a rotation shaft 1061 and a blade 1062 positioned at the rotation shaft 1061. Further, the rotary shaft 1061 is disposed within the enclosed structure and has opposite ends respectively contacting the first sealing plate 102 and the second sealing plate 103, or respectively connected to the first sealing plate 102 and the second sealing plate 103.

Obviously, the gas entering the interior space of the enclosure from the inlet duct 104 will flow within the enclosure before exiting the interior space of the enclosure from the outlet duct 105, thereby exerting pressure on the vanes 1062, causing the vanes 1062 to rotate about the axis of rotation 1061 connected to the first and second closure plates 102, 103. In this closed structure, the positions of the air inlet pipe 104 and the air outlet pipe 105 are fixed, that is, the openings of the air inlet pipe 104 and the air outlet pipe 105 are fixed. Thus, when the vane 1062 is positioned away from the opening of the gas outlet 105 (or from the opening of the gas inlet pipe 104), the gas can fully enter and exit the closed structure and fully drive the vane 1062 to rotate, and the gas flow exiting from the gas outlet pipe 105 can be stably maintained at about the gas flow entering from the gas inlet pipe 104, and the balance of one inlet and one outlet is maintained. Then, when the vane 1062 is driven by the flow of gas to a position immediately adjacent to the opening of the outlet pipe 105 (or immediately adjacent to the opening of the inlet pipe 104), the flow of gas into and out of the enclosure is impeded or even completely blocked by the vane 1062, such that the flow of gas exiting from the outlet pipe 105 drops significantly or even completely zeroes, and little or no flow of gas drives the vane 1062. However, due to the inertia of the motion, the vane 1062 continues to rotate away from the opening immediately adjacent to the outlet pipe 105 (or immediately adjacent to the inlet pipe 104) so that gas again can enter and exit the enclosure sufficiently and the vane 1062 is driven sufficiently to rotate so that the flow of gas exiting the outlet pipe 105 is again maintained stably at about the flow of gas entering the inlet pipe 104, again maintaining a one-in-one-out balance. In other words, the gas having a steady flow rate, which is originally inputted from the gas inlet pipe 104, may be adjusted to a gas having a periodically intermittent flow rate or a pulse flow rate, which exits from the gas outlet 105. Here, fig. 1C, 1D and 1E schematically illustrate the change in the geometric relationship between the vane 1062 rotating about the rotation axis 1061 and the opening of the outlet duct 105. Obviously, the gas flow path of the gas from the inlet pipe 104 or the closed space into the outlet pipe 105 is intermittently blocked or even completely blocked by the vane 1062, so that the flow rate of the gas exiting from the outlet pipe 105 is changed in pulses.

Further, since the operation mechanism of the present utility model only requires the rotation of the pulse rotation device 106 during the process of entering and leaving the closed structure, the air inlet pipe 104 or the air outlet pipe 105 may contact the hollow cylindrical housing 101, the first sealing plate 102 or the second sealing plate 103 and form the opening in the hollow cylindrical housing 101, the first sealing plate 102 or the second sealing plate 103, or even the air inlet pipe 104 or the air outlet pipe 105 may penetrate the hollow cylindrical housing 101, the first sealing plate 102 or the second sealing plate 103 and form the opening in the closed structure. Of course, it is relatively easy and common to place the air inlet pipe 105 and the air outlet pipe 105 in contact with the hollow cylindrical housing 101 or penetrating the hollow cylindrical housing 101.

Of course, although fig. 1A and 1B show examples in which two air inlet pipes 104 are respectively located at opposite sides of the hollow cylindrical housing 101, two air outlet pipes 105 are also respectively located at opposite sides of the hollow cylindrical housing 101, two air inlet pipes 104 are located on the same plane and two air outlet pipes 104 are located on the other plane, and the pulse rotation device 106 has a single large vane 1062, the present utility model is not limited thereto. First, the number of the air inlet pipe 104 and the air outlet pipe 105 is not limited, and the positions of the air inlet pipe 104 and the air outlet pipe 105 are not limited, and the number of the blades 1062 is not limited. As long as there are conduits for gas to enter and leave, respectively, as long as the gas can contact the vane 1062 and urge the vane 1062 to rotate about the axis of rotation 1061 during the flow from the inlet tube 104 to the outlet tube 105, as long as the gas flow rate when the gas exits can be intermittently varied adjacent or even in contact with the outlet tube 105 opening or even the inlet tube 104 opening during the rotation of the vane 1062 about the axis of rotation 1061.

Further, when the air inlet pipe 104 or even the air outlet pipe 105 is in contact with or penetrates the hollow cylindrical housing 101, the vane 1062 is in interaction with the air inlet pipe 104 or even the air outlet pipe 105 opening at a region closer to the rotation axis 1061 than the air inlet pipe 104 or even the air outlet pipe 105 opening, but when the air inlet pipe 104 or even the air outlet pipe 105 is in contact with or penetrates the first sealing plate 102 or the second sealing plate 103, the vane 1062 is in interaction with the air inlet pipe 104 or even the air outlet pipe 105 opening at a region closer to the rotation axis 1061 above or below the air inlet pipe 104 or even the air outlet pipe 105 opening. Thus, to ensure that the flow path of gas exiting this enclosure can be blocked or even blocked when the vane 1062 is adjacent to the outlet duct 105 or even the inlet duct 104, the size profile of the vane 1062 has some requirements or preferred options. When the inlet pipe 104 or even the outlet pipe 105 is in contact with or penetrates the hollow cylindrical housing 101, the dimension of the vane 1062, or the dimension of the vane 1062 in the direction from the surface of the rotating shaft 1061 to the opening of a specific outlet pipe 105 or the opening of a specific inlet pipe 104, is not greater than the distance from the surface of the rotating shaft 1061 to the opening of the specific outlet pipe 105 or the opening of the specific inlet pipe 104. In this case, the distance between the opening of any one of the air inlet pipes 104 and the rotation shaft 1061 is not smaller than the dimension of any one of the blades 1062 in the direction perpendicular to the axial direction of the rotation shaft 1061, or the distance between the opening of any one of the air outlet pipes 105 and the rotation shaft 1061 is not smaller than the dimension of any one of the blades 1062 in the direction perpendicular to the axial direction of the rotation shaft 1061. In contrast, when the inlet pipe 104 or even the outlet pipe 105 is in contact with or penetrates the first sealing plate 102 or the second sealing plate 103, the dimension of the vane 1062 or the dimension of the vane 1062 in the direction from the surface of the rotating shaft 1061 to the opening of a specific outlet pipe 105 or the opening of a specific inlet pipe 104 is not smaller than the distance from the surface of the rotating shaft 1061 to the opening of the specific outlet pipe 105 or the opening of the specific inlet pipe 104. In this case, the distance between the opening of any one of the air inlet pipes 104 and the rotation shaft 1061 is not greater than the dimension of any one of the blades 1062 in the direction perpendicular to the axial direction of the rotation shaft 1061, or the distance between the opening of any one of the air outlet pipes 105 and the rotation shaft 1061 is not greater than the dimension of any one of the blades 1062 in the direction perpendicular to the axial direction of the rotation shaft 1061.

For example, some completed tests and simulations show that when the air inlet pipe 104 or even the air outlet pipe 105 is in contact with or penetrates the hollow cylindrical housing 101, a practically feasible option is that the distance between the opening of any air inlet pipe 104 and the rotation axis 1061 is not more than one hundred and five percent of the dimension of any vane 1062 in the direction perpendicular to the axial direction of the rotation axis 1061, or that the distance between the opening of any air outlet pipe 105 and the rotation axis 1061 is not more than one hundred and five percent of the dimension of any vane 1062 in the direction perpendicular to the axial direction of the rotation axis 1061. One sample tested was a hollow cylindrical housing 101 having an outer diameter of 400 centimeters (mm) and an inner diameter of 300 centimeters (mm), with a distance between the edge of the vane 1062 and the inner surface of the hollow cylindrical housing 101 of 3 centimeters (mm). I.e. any openings through the inlet 104 and outlet 105 tubes of the hollow cylindrical housing 101 are only 3 centimeters (mm) from the edge of the vane 1062. In other words, the distance from the opening of either inlet tube 104 or either outlet tube 105 to the axis of rotation 1061 in a direction perpendicular to the axis of rotation 1061 is no greater than one hundred and five percent of the size of the vane 1062 in that direction. For example, the plurality of air inlet pipes 104 may be arranged along the axial direction of the rotation shaft 1061, the plurality of air outlet pipes 105 may be arranged along the axial direction of the rotation shaft 1061, and the plurality of air inlet pipes 104 and the plurality of air outlet pipes 105 may be arranged alternately along the axial direction of the rotation shaft 1061. For example, the plurality of air inlet pipes 104 may be or may be uniformly distributed on the hollow cylindrical housing 101 in a plane perpendicular to the axial direction of the rotation shaft 1061, the plurality of air outlet pipes 105 may be uniformly distributed on the hollow cylindrical housing 101 in a plane perpendicular to the axial direction of the rotation shaft 1061, or the plurality of air inlet pipes 104 and the plurality of air outlet pipes 105 may be alternately and uniformly distributed on the hollow cylindrical housing 101 in a plane perpendicular to the axial direction of the rotation shaft 1061.

Further, the profile of a vane 1062, etc. may also be adjustable when the vane 1062 is sized sufficiently to effectively block or even completely block gas from entering or exiting a particular outlet duct 105 or even a particular inlet duct 104 when blown by gas into the vicinity of the particular outlet duct 105 opening or even the particular inlet duct 104 opening. For example, when the thickness of a vane 1062 exceeds the diameter of any opening, the vane 1062 more easily effectively blocks or even completely blocks gas from entering or exiting the opening. For example, when the dimension of a vane 1062 in the direction perpendicular to the axis of rotation 1061 is sufficiently close to or even in contact with a particular outlet tube 105 opening or a particular inlet tube 104 opening, the greater the width of the vane 1062 or the greater the width of the end of the vane 1062 distal from the axis of rotation 1061, the more significant pulsed gas flow can be achieved when the vane 1062 is driven by the flow of gas adjacent to a particular outlet tube 105 opening or a particular inlet tube 104 opening, effectively blocking or even completely blocking the flow of gas into or out of the particular outlet tube 105 or even the particular inlet tube 104.

For example, some completed tests and simulations show that only a single blade is required to rotate about the axis of rotation, thereby effectively temporarily closing each inlet opening and each outlet opening in sequence. Of course, if it is desired to raise the frequency at which each inlet pipe opening is periodically closed with each outlet pipe opening, a plurality of vanes may be used simultaneously, especially when the inlet pipe openings and the outlet pipe openings are located in different planes, respectively. The profile and the size of the blade can be effectively closed only when the blade is close to a certain air inlet pipe opening or a certain air outlet pipe opening, one common simple profile is in a crescent shape, and the width and the bending degree of the crescent can be adjusted according to requirements.

Incidentally, since the present utility model uses the vane 1062 to change the gas flow path without using the vane 1062 to support a structure or to withstand vibration, friction, pressure, etc., any lightweight and any easily processed material may be used to form the vane 1062, practical application is not difficult.

As shown in fig. 2A, a second embodiment of the present utility model provides an MBR pulse aeration system, which includes an MBR membrane tank 201, an MBR pulse aeration device 202, a gas source 203, and a gas line 24. Here, the MBR membrane tank 201 is used to house one or more MBR membrane modules 2011, the gas source 203 is used to provide gas for cleaning each MBR membrane module 2011, the gas pipeline 204 is used to transfer the gas from the gas source 203 to the MBR pulse aeration device 202 and from the MBR pulse aeration device 202 to the MBR membrane tank 201, and the MBR pulse aeration device 202 is used to convert the gas continuously provided by the gas source 203 into the gas with pulse flow rate. Here, the MBR pulse aeration device 202 is described in the second embodiment of the present utility model, and thus the details of the MBR pulse aeration device 202 will not be repeated.

Obviously, the MBR pulse aeration system can effectively perform pulse aeration treatment on each MBR membrane module 2011, so that not only the MBR pulse aeration device 202 is simple in structure and easy to operate, but also the structure of the MBR membrane tank 201 does not need to be specially designed for the pulse aeration treatment, and only each MBR membrane module 2011 needs to be arranged respectively, and the gas pipeline 24 can transmit the gas with pulse flow to each MBR membrane module 2011. That is, the relative geometry of the MBR module 201 and the MBR pulse aeration apparatus 202, how to connect the two with the gas line 24, is not particularly limited.

For example, as shown in fig. 2B, one possible design is to have the MBR die tank 201 directly above the MBR pulse aeration device 202 and in direct contact with the MBR pulse aeration device 202. The first sealing plate inside the MBR pulse aeration device 202 may then be integrated with the gas outlet pipe and the gas line 24 into a plate 2052 with one or more holes 2051, such that the gas with the pulse gas flow is directly transferred from the at least one hole 2051 into the MBR die tank 201. At this time, the holes 2051 may be staggered with respect to the MBR membrane modules 2011, so that each MBR membrane module 2011 may be fully subjected to the pulse aeration treatment.

The above description of the common general knowledge will not be described in detail, as will be appreciated by those skilled in the art.

The foregoing description of the embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims (10)

1. An MBR pulse aeration device, comprising:

A hollow cylindrical housing;

A first sealing plate and a second sealing plate which are respectively positioned at two opposite ends of the hollow columnar shell and are mutually contacted with the hollow columnar shell so as to form a closed structure;

At least one air inlet pipe, different air inlet pipes are respectively connected to different parts of the closed structure, so that a gas can enter the closed structure from at least one air inlet pipe;

At least one gas outlet pipe, different gas outlet pipes are respectively connected to different parts of the closed structure, so that the gas can leave the closed structure from at least one gas outlet pipe; and

A pulse rotation device, which comprises a rotation shaft and at least one blade, wherein any blade is positioned on the rotation shaft;

The rotating shaft is positioned in the closed structure, and two opposite ends of the rotating shaft are respectively contacted with the first sealing plate and the second sealing plate.

2. The MBR pulse aeration device according to claim 1, comprising at least one of:

At least one air inlet pipe penetrates through the hollow columnar shell and enters the inside of the closed structure; and

At least one air outlet pipe penetrates through the hollow columnar shell and enters the inside of the closed structure.

3. The MBR pulse aeration device according to claim 1, comprising at least one of:

At least one air inlet pipe penetrates through the first sealing plate and enters the inside of the sealing structure;

at least one air inlet pipe penetrates through the second sealing plate and enters the inside of the sealing structure;

at least one air outlet pipe penetrates through the first sealing plate and enters the inside of the sealing structure; and

At least one air outlet pipe penetrates through the second sealing plate and enters the inside of the sealing structure.

4. The MBR pulse aeration device according to claim 2, comprising at least one of:

The distance between the opening of any air inlet pipe and the surface of the rotating shaft is not smaller than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft;

The distance between the opening of any air outlet pipe and the surface of the rotating shaft is not smaller than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft;

The distance between the opening of any air inlet pipe and the surface of the rotating shaft is no more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft; and

The distance between the opening of any air outlet pipe and the surface of the rotating shaft is no more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft.

5. An MBR pulse aeration device according to claim 3, comprising at least one of:

The distance between the opening of any air inlet pipe and the surface of the rotating shaft is not greater than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft; and

The distance between the opening of any air outlet pipe and the surface of the rotating shaft is not greater than the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft.

6. The MBR pulse aeration device according to claim 1, comprising at least one of:

The number of the blades is one; and

The contour of at least one blade is crescent.

7. An MBR pulse aeration system, comprising:

an MBR membrane pool for placing one or more MBR membrane modules;

An MBR pulse aeration device comprises a hollow cylindrical shell, a first sealing plate, a second sealing plate, at least one air inlet pipe, at least one air outlet pipe and a pulse rotation device, wherein the first sealing plate and the second sealing plate are respectively positioned at two opposite ends of the hollow cylindrical shell and are mutually contacted with the hollow cylindrical shell to form a closed structure, different air inlet pipes are respectively connected to different parts of the closed structure so that a gas can enter the closed structure from at least one air inlet pipe, different air outlet pipes are respectively connected to different parts of the closed structure so that the gas can leave the closed structure from at least one air outlet pipe, the pulse rotation device comprises a rotating shaft and at least one blade positioned at the rotating shaft, and the rotating shaft is positioned inside the closed structure, and the two opposite ends of the rotating shaft are respectively mutually contacted with the first sealing plate and the second sealing plate;

a gas source for providing a gas for cleaning the one or more MBR membrane modules and connected to the at least one gas inlet pipe; and

At least one gas line for delivering gas from the gas source to the MBR pulse aeration device and from the MBR pulse aeration device to the MBR membrane tank.

8. The MBR pulse aeration system according to claim 7, wherein the gas line and the first sealing plate inside the MBR pulse aeration device are integrated together with the gas outlet pipe into a plate having one or more holes, so that the gas passing through the MBR pulse aeration device is directly transferred from the at least one hole to the MBR die pool, and the one or more holes are alternately corresponding to the one or more MBR membrane modules, thereby allowing each of the MBR membrane modules to be sufficiently pulse-aerated.

9. The MBR pulse aeration system according to claim 7, comprising at least one of:

At least one air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not smaller than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft;

At least one air outlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air outlet pipe and the surface of the rotating shaft is not smaller than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft;

at least one air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft;

At least one air inlet pipe penetrates through the hollow cylindrical shell and enters the inside of the closed structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not more than one hundred and five percent of the dimension of any blade in the direction perpendicular to the axial direction of the rotating shaft;

At least one air inlet pipe penetrates through the first sealing plate and enters the inside of the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft;

At least one air inlet pipe penetrates through the second sealing plate and enters the inside of the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft;

at least one air outlet pipe penetrates through the first sealing plate and enters the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft; and

At least one air outlet pipe penetrates through the second sealing plate and enters the sealing structure, and the distance between the opening of the air inlet pipe and the surface of the rotating shaft is not greater than the dimension of the blade in the direction perpendicular to the axial direction of the rotating shaft.

10. The MBR pulse aeration system according to claim 7, comprising at least one of:

The number of the blades is one; and

The contour of at least one blade is crescent.