An energy-saving pulse aeration box and MBR membrane module

Abstract

This utility model discloses an energy-saving pulse aeration box and an MBR membrane module, which includes a box body, an air inlet structure, and an air storage cup. The box body is provided with a downward-opening air-containing cavity, and an air guide column is connected to the top side wall of the air-containing cavity. The air guide column extends downward and is provided with a hollow air guide hole. An air outlet is also provided at the upper part of the box body, and the upper end of the hollow air guide hole communicates with the air outlet. The air inlet structure is provided in the box body. The air storage cup is provided in the air-containing cavity and fixed to the box body. The air storage cup is provided with an upward-opening air storage cavity, and the air storage cup is covered by the air guide column. The air storage cavity is connected to the air-containing cavity and the hollow air guide hole. The air guide column includes a U-shaped arc wall and a straight plate wall. The two ends of the straight plate wall are connected to the two ends of the U-shaped arc wall. The two ends of the outer end face of the straight plate wall are respectively connected to reinforcing wing plates. A matching groove is recessed in the side wall of the air storage cavity, and the U-shaped arc wall and the two reinforcing wing plates are fitted into the matching groove. The energy-saving pulse aeration box with the above structure has good structural strength and durability.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an energy-saving pulse aeration box and MBR membrane module. Background Technology

[0002] Traditional MBR membrane module aeration structures typically employ continuous aeration, resulting in high energy consumption and low efficiency in both membrane cleaning and oxygen transfer. To address these issues, energy-efficient pulse aeration boxes have emerged, enabling intermittent pulse aeration. These boxes offer low energy consumption, high membrane cleaning efficiency, and high oxygen transfer efficiency, leading to their widespread application in MBR membrane modules. Existing energy-efficient pulse aeration boxes include a main body, an air storage cup, and an air inlet structure. The main body features a downward-opening air chamber with a hollow air guide column connected to its top wall. The air storage cup has an upward-opening air storage chamber, which is positioned outside the air guide column. The main body also features an air outlet. During operation, aeration gas is introduced into the air chamber through the air intake structure. The aeration gas gradually accumulates in the air chamber, pushing the water level inside the chamber downwards. When the water level in the air storage cup is lower than the lower end of the air guide column, the gas passes through the hollow holes of the air guide column and is ejected through the air outlet under water pressure, achieving the function of pulse aeration. The aforementioned aeration box, air guide column, and air storage cup need to withstand the pressure of both water and gas. However, the current structure still lacks sufficient strength, affecting the durability of the aeration box. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an energy-saving pulse aeration box with good structural strength and durability.

[0004] This utility model also proposes an MBR membrane module having the above-mentioned energy-saving pulse aeration box.

[0005] An energy-saving pulse aeration box according to a first aspect embodiment of the present invention includes: a box body having a downward-opening air-containing cavity, an air guide column connected to the top wall of the air-containing cavity, the air guide column extending downward, the air guide column having a hollow air guide hole penetrating through the upper and lower ends of the air guide column to form an opening, and an air outlet hole provided at the upper part of the box body, the upper end of the hollow air guide hole communicating with the air outlet hole; an air inlet structure disposed in the box body and used to input aeration gas into the air-containing cavity; and an air storage cup disposed in the air-containing cavity and fixed to the box body, the air storage cup having an upward-opening air storage cavity. The gas storage cup covers the gas guide column through the gas storage cavity, and the gas storage cavity is connected to the gas holding cavity and the hollow gas guide hole. The gas guide column includes a U-shaped arc wall and a straight plate wall. The two ends of the straight plate wall are connected to the two ends of the U-shaped arc wall to form a hollow column. The two ends of the outer end face of the straight plate wall are respectively connected to reinforcing wing plates. The reinforcing wing plates are arranged in the vertical direction and the upper end extends to the top side wall of the gas holding cavity. The side wall of the gas storage cavity is recessed with a matching groove adapted to the U-shaped arc wall and the two reinforcing wing plates. The U-shaped arc wall and the two reinforcing wing plates are fitted into the matching groove.

[0006] According to an embodiment of the present invention, an energy-saving pulse aeration box has at least the following beneficial effects: In the above-described structure, the air guide column includes a U-shaped arc wall and a straight plate wall. The straight plate wall connects two reinforcing wing plates, so that the air guide column and the reinforcing wing plates together form an "A"-shaped cross-sectional structure with good structural strength. In addition to being fixed to the top side wall of the air chamber, the air storage cup is also mutually fitted and matched with the U-shaped arc wall and the reinforcing wing plates of the settling trough and the air guide column, so that the air guide column and the air storage cup can support each other under pressure, making the entire structure strong and able to withstand water pressure and air pressure, and the aeration box durable.

[0007] According to some embodiments of this utility model, a communicating channel is formed between the air guide column and the cavity wall of the gas-containing cavity; the opening of the gas-storing cavity is spaced from the top side cavity wall of the gas-containing cavity; the lower end of the air guide column is spaced from the bottom wall of the gas-storing cavity of the gas-storing cup; the upper end of the communicating channel communicates with the opening of the gas-storing cavity; and the lower end of the communicating channel communicates with the lower end of the hollow air guide hole. The communicating channel is formed between the straight plate wall and the cavity side wall of the gas-storing cavity opposite to the straight plate wall.

[0008] According to some embodiments of the present invention, the outer surface of the U-shaped arc wall is provided with multiple reinforcing ribs, the reinforcing ribs extend along the length direction of the air guide column, and each of the reinforcing ribs is arranged at intervals along the arc extension direction of the U-shaped arc wall. The upper end of the reinforcing rib extends to connect to the top side cavity wall of the air chamber, and the U-shaped arc wall abuts against the groove wall of the matching sink through the reinforcing ribs.

[0009] According to some embodiments of the present invention, the box body includes a base shell and an air outlet hood. The air-containing cavity and the air guide column are disposed on the base shell. The air outlet hood is installed on the upper end of the base shell. The air outlet hole is disposed on the air outlet hood. The air outlet hood covers the upper side of the hollow air guide hole. The air outlet hood and the base shell enclose each other to form an air outlet channel for connecting the hollow air guide hole and the air outlet hole.

[0010] According to some embodiments of the present invention, the vent hood has multiple vent holes distributed on both sides of the vent hood, and the vent channel includes sub-channels corresponding to each of the vent holes. One end of each sub-channel is interconnected with the hollow air guide hole, and the other end of each sub-channel is connected to the corresponding vent hole.

[0011] According to some embodiments of the present invention, fasteners are provided for fastening the vent and the base shell, and the fasteners are also provided for the gas storage cup to lock the gas storage cup together with the vent and the base shell.

[0012] According to some embodiments of the present invention, the vent hood is provided with vent reinforcing ribs, the vent reinforcing ribs constitute the channel wall of the vent channel, and the upper end face of the base shell is provided with slots that are adapted to a portion of the vent reinforcing ribs, the vent reinforcing ribs being inserted into the slots.

[0013] According to some embodiments of this utility model, the air intake structure is an air intake box, which is disposed below the air-containing cavity of the box body. The air intake box has an air intake cavity with its opening facing downward. The side wall of the air intake cavity is provided with multiple air intake and output holes. The projection of the air intake and output holes in the vertical direction is within the range of the opening of the air-containing cavity. One end of the air intake box is provided with an air inlet, which is used to input aeration gas into the air intake cavity.

[0014] According to some embodiments of the present invention, the box body is provided with an external connecting pipe for connecting to an external gas pipeline, one end of the air inlet box is provided with a connecting pipe, the air inlet is provided in the connecting pipe, the connecting pipe is inserted into the external connecting pipe, and the other end of the air inlet box is fastened to the box body by fasteners.

[0015] According to a second aspect of the present invention, an MBR membrane module includes: a membrane frame; multiple MBR membrane arrays arranged in a row on the membrane frame; and an energy-saving pulse aeration box as described in the first aspect of the present invention, wherein the energy-saving pulse aeration box is disposed at the lower part of the membrane frame, and multiple energy-saving pulse aeration boxes are arranged in a row on the lower side of the MBR membrane array. In each energy-saving pulse aeration box, at least three sets of air guide columns, air storage cups, and air outlets are provided and arranged in a straight line.

[0016] The MBR membrane module according to the embodiments of the present invention has at least the following beneficial effects: due to the adoption of the energy-saving pulse aeration box of the first aspect of the present invention, the MBR membrane module has the characteristics of energy saving, good aeration effect, stable aeration box structure, and good durability; each energy-saving pulse aeration box is provided with at least three sets of air guide columns, the air storage cup and the air outlet, with a wide aeration range and sufficient aeration.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a perspective view of the gas storage box according to an embodiment of the present utility model;

[0020] Figure 2 This is an exploded view of the gas storage box according to an embodiment of the present utility model;

[0021] Figure 3 This is a sectional view of a vertical plane half-section of an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the air guide column according to an embodiment of the present invention;

[0023] Figure 5 This is a three-dimensional schematic diagram of the gas storage cup according to an embodiment of the present utility model;

[0024] Figure 6 This is a cross-sectional view taken along the horizontal direction of an embodiment of the present utility model;

[0025] Figure 7 This is an exploded view of the box body according to an embodiment of the present utility model;

[0026] Figure 8 This is a three-dimensional schematic diagram of the air outlet cover according to an embodiment of the present utility model;

[0027] Figure 9 This is a three-dimensional schematic diagram of an MBR membrane module according to an embodiment of the present invention.

[0028] Figure label:

[0029] Box body 100, air chamber 110, air guide column 120, air outlet 130, base shell 140, air outlet cover 150, air outlet channel 160, pressure relief hole 111, hollow air guide hole 121, U-shaped arc wall 122, straight plate wall 123, reinforcing wing plate 124, slot 141, outer pipe part 142, cover reinforcing rib 151;

[0030] Air intake structure 200, air intake chamber 210, air intake outlet 220, air inlet 230, connecting pipe 240;

[0031] Air cup 300, air chamber 310, matching sink 320, and ear bracket 330;

[0032] Connecting channel 400;

[0033] membrane frame 500;

[0034] MBR membrane array 600. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0038] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0039] Reference Figures 1 to 9 An energy-saving pulse aeration box includes a box body 100, an air inlet structure 200, and an air storage cup 300. The box body 100 has a downward-opening air-containing cavity 110. An air guide column 120 is connected to the top wall of the air-containing cavity 110. The air guide column 120 extends downward and has a hollow air guide hole 121 that penetrates the upper and lower ends of the air guide column 120 to form an opening. An air outlet 130 is also provided at the upper part of the box body 100, and the upper end of the hollow air guide hole 121 communicates with the air outlet 130. The air inlet structure 200 is disposed in the box body 100 and is used to input aeration gas into the air-containing cavity 110. The gas cup 300 is disposed in the gas cavity 110 and fixed to the box body 100. The gas cup 300 is provided with an upward-facing gas cavity 310. The gas cup 300 is covered by a gas guide column 120 through the gas cavity 310. The gas cavity 310 is connected to the gas cavity 110 and the hollow gas guide hole 121. The air guide column 120 includes a U-shaped arc wall 122 and a straight plate wall 123. The two ends of the straight plate wall 123 are connected to the two ends of the U-shaped arc wall 122 to form a hollow column. The two ends of the outer end face of the straight plate wall 123 are respectively connected to reinforcing wing plates 124. The reinforcing wing plates 124 are arranged in the vertical direction and the upper end extends to the top side wall of the air chamber 110. The side wall of the air storage chamber 310 is recessed with a matching groove 320 that is adapted to the U-shaped arc wall 122 and the two reinforcing wing plates 124. The U-shaped arc wall 122 and the two reinforcing wing plates 124 are fitted into the matching groove 320.

[0040] The above-described structure includes a U-shaped arc wall 122 and a straight plate wall 123. The straight plate wall 123 connects two reinforcing wing plates 124, so that the air guide column 120 and the reinforcing wing plates 124 together form an "A" shaped cross-sectional structure with good structural strength. The air storage cup 300 is fixed to the top side wall of the air chamber 110, and also fits into the U-shaped arc wall 122 and the reinforcing wing plates 124 of the air guide column 120 through the matching of the settling trough 320 and the air guide column 120. This allows the air guide column 120 and the air storage cup 300 to support each other under pressure, resulting in good structural strength, the ability to withstand water pressure and air pressure, and good durability of the aeration box.

[0041] In this embodiment, a connecting channel 400 is formed between the air guide column 120 and the cavity wall of the air-containing cavity 110. The opening of the air-storing cavity 310 is spaced from the top side cavity wall of the air-containing cavity 110. The lower end of the air guide column 120 is spaced from the bottom wall of the air-storing cavity 310 of the air-storing cup 300. The upper end of the connecting channel 400 is connected to the opening of the air-storing cavity 310, and the lower end of the connecting channel 400 is connected to the lower end of the hollow air guide hole 121. The connecting channel 400 is formed between the straight plate wall 123 and the cavity side wall of the air-storing cavity 310 opposite to the straight plate wall 123. With the above structure, the gas storage chamber 310 can be connected to the gas container 110 and the hollow air guide hole 121 in a simple way. The connecting channel 400 is located between the straight plate wall 123 and the cavity side wall of the gas storage chamber 310 opposite to the straight plate wall 123. The structure of the straight plate wall 123 reduces the volume occupied by the air guide column 120, so that the connecting channel 400 has sufficient width, thereby ensuring smooth flow.

[0042] In some embodiments (not shown in the figures), the outer surface of the U-shaped arc wall 122 is provided with multiple reinforcing ribs. These ribs extend along the length of the air guide column 120, and are spaced apart along the arcuate extension direction of the U-shaped arc wall 122. The upper ends of the ribs extend to connect to the top wall of the air chamber 110. The U-shaped arc wall 122 abuts against the wall of the matching groove 320 through the reinforcing ribs. Using this structure, the reinforcing ribs abut against the wall of the matching groove 320, thus forming direct support between them, resulting in good structural strength.

[0043] In some embodiments, the height of the reinforcing ribs gradually decreases from top to bottom, and the lower end is lowered to be flush with the outer surface of the U-shaped arc wall 122. With the above structure, when assembling the air guide column 120 and the air storage cup 300, a mutually pressing fit can be gradually formed, making assembly easier and less likely to damage the components.

[0044] In this embodiment, the box body 100 includes a base shell 140 and an air vent 150. An air-containing cavity 110 and an air guide column 120 are disposed on the base shell 140. The air vent 150 is mounted on the upper end of the base shell 140, and an air vent 130 is disposed on the air vent 150. The air vent 150 covers the upper side of the hollow air guide hole 121, and the air vent 150 and the base shell 140 enclose each other to form an air outlet channel 160 for connecting the hollow air guide hole 121 and the air vent 130. Using the above structure, dividing the box body 100 into a base shell 140 and an air vent 150 facilitates manufacturing. Furthermore, different shapes and numbers of air vents can be configured by using different air vents 150.

[0045] In this embodiment, the exhaust hood 150 has multiple exhaust holes 130 distributed on both sides of the exhaust hood 150. The exhaust channel 160 includes sub-channels corresponding to each exhaust hole 130. One end of each sub-channel is interconnected and connected to the hollow air guide hole 121, while the other end of each sub-channel is connected to the corresponding exhaust hole 130. Using this structure, the gas output from the hollow air guide hole 121 can be diverted to each exhaust hole 130, thereby achieving multi-directional air output and improving the aeration effect.

[0046] In this embodiment, fasteners are provided to secure the vent 150 and the base shell 140 together. These fasteners also pass through the gas reservoir 300, locking the gas reservoir 300 together with the vent 150 and the base shell 140. This structure allows for simultaneous fastening of three components, simplifying the fixing process and avoiding the use of multiple fasteners or multiple fixing points, thus facilitating manufacturing. In this embodiment, the gas reservoir 300 is equipped with mounting brackets 330 to cooperate with the fasteners.

[0047] In one embodiment, the fastener can be a screw, which passes sequentially through the vent 150 and the base shell 140 and is threaded onto the gas reservoir 300, thereby securing the three together. In other embodiments, the fastener can be other structures, such as a combination of bolts and nuts, where the bolt passes through the vent 150, the base shell 140, and the gas reservoir 300, and the nuts secure the three together; or the fastener can be a rivet, used for fixing. In another embodiment, a sealing gasket can be added for tightening to prevent air leakage.

[0048] In this embodiment, the vent 150 is provided with vent reinforcing ribs 151, which form the channel wall of the vent channel 160. The upper end face of the base shell 140 is provided with slots 141 that are adapted to a portion of the vent reinforcing ribs 151, and the vent reinforcing ribs 151 are inserted into the slots 141. With the above structure, the vent reinforcing ribs 151 can strengthen the vent 150 and, by using the vent reinforcing ribs 151 to form the channel wall of the vent channel 160, the structure can be simplified. Furthermore, the cooperation between the vent reinforcing ribs 151 and the slots 141 of the base shell 140 improves the stability of the connection structure.

[0049] In this embodiment, the air intake structure 200 is an air intake box, which is located below the air-containing cavity 110 of the box body 100. The air intake box has an air intake cavity 210 with its opening facing downwards. Multiple air intake outlet holes 220 are formed on the side wall of the air intake cavity 210. The projection of the air intake outlet holes 220 in the vertical direction falls within the opening range of the air-containing cavity 110. One end of the air intake box has an air inlet 230, which is used to input aeration gas into the air intake cavity 210. The aeration gas enters the air intake cavity 210 through the air inlet 230 and is buffered in the air intake cavity 210 until the liquid level is pushed down by the gas to the air intake outlet holes 220. The gas then exits through the air intake outlet holes 220 in the form of bubbles, and under the action of buoyancy, it vertically enters the air-containing cavity 110 of the upper box body 100, completing the air intake. Using the above structure, a primary air intake buffer can be formed through the air intake box, resulting in stable air pressure.

[0050] In this embodiment, a plurality of pressure relief holes 111 are provided on the lower part of the sidewall of the gas chamber 110. The pressure relief holes 111 are located below the lower end of the air guide column 120. When the input pressure of the aeration gas is large and the liquid level drops rapidly to the position of the pressure relief hole 111, pressure relief can be achieved to ensure the working stability of the aeration box.

[0051] In this embodiment, the main body 100 is provided with an external connecting pipe 142 for connecting to an external gas pipeline. One end of the air inlet box is provided with a connecting pipe 240, and an air inlet 230 is located within the connecting pipe 240, which is inserted into the external connecting pipe 142. The other end of the air inlet box is fastened to the main body 100 using fasteners. These fasteners may be combinations of screws, bolts, and nuts, or rivets. This structure for fixing the air inlet box is simple, easy to assemble, and provides a secure fixation. In this embodiment, the air inlet box is fixed to the base shell 140 of the main body 100.

[0052] The MBR membrane module provided in this embodiment includes: a membrane frame 500, an MBR membrane array 600, and an energy-saving pulse aeration box according to the first aspect of this invention. Multiple MBR membrane arrays 600 are arranged in a row on the membrane frame 500. Multiple energy-saving pulse aeration boxes are located at the lower part of the membrane frame 500 and arranged side-by-side on the lower side of the MBR membrane array 600. Each energy-saving pulse aeration box has at least three sets of air guide columns 120, air storage cups 300, and air outlets 130, arranged in a straight line. Due to the use of the energy-saving pulse aeration box according to the first aspect of this invention, the MBR membrane module features energy saving, good aeration effect, stable aeration box structure, and good durability. Each energy-saving pulse aeration box has at least three sets of air guide columns 120, air storage cups 300, and air outlets 130, resulting in a wide aeration range and sufficient aeration. In the embodiment, a plurality of air vents 130 on each air vent 150 are grouped together with an air guide column 120 and an air storage cup 300.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An energy-saving pulse aeration box, characterized in that, include: The box body (100) is provided with a downward-facing air-containing cavity (110). The top side wall of the air-containing cavity (110) is connected to an air guide column (120). The air guide column (120) extends downward and is provided with a hollow air guide hole (121). The hollow air guide hole (121) penetrates the upper and lower ends of the air guide column (120) to form an opening. The upper part of the box body (100) is also provided with an air outlet (130). The upper end of the hollow air guide hole (121) is connected to the air outlet (130). An air intake structure (200) is disposed on the box body (100) and used to input aeration gas into the air chamber (110); A gas storage cup (300) is disposed in the gas-containing cavity (110) and fixed to the box body (100). The gas storage cup (300) is provided with an upward-facing gas storage cavity (310). The gas storage cup (300) covers the gas guide column (120) through the gas storage cavity (310). The gas storage cavity (310) is connected to the gas-containing cavity (110) and the hollow gas guide hole (121). The air guide column (120) includes a U-shaped arc wall (122) and a straight plate wall (123). The two ends of the straight plate wall (123) are connected to the two ends of the U-shaped arc wall (122) to form a hollow column. The two ends of the outer end face of the straight plate wall (123) are respectively connected to reinforcing wing plates (124). The reinforcing wing plates (124) are arranged in the vertical direction and the upper end extends to the top side wall of the air-containing cavity (110). The side wall of the air-storing cavity (310) is recessed with a matching groove (320) that is adapted to the U-shaped arc wall (122) and the two reinforcing wing plates (124). The U-shaped arc wall (122) and the two reinforcing wing plates (124) are fitted into the matching groove (320).

2. The energy-saving pulse aeration box according to claim 1, characterized in that: A connecting channel (400) is formed between the air guide column (120) and the cavity wall of the air-containing cavity (110). The opening of the air-storing cavity (310) is spaced from the top side cavity wall of the air-containing cavity (110). The lower end of the air guide column (120) is spaced from the bottom wall of the air-storing cavity (310) of the air-storing cup (300). The upper end of the connecting channel (400) is connected to the opening of the air-storing cavity (310). The lower end of the connecting channel (400) is connected to the lower end of the hollow air guide hole (121). The connecting channel (400) is formed between the straight plate wall (123) and the cavity side wall of the air-storing cavity (310) opposite to the straight plate wall (123).

3. The energy-saving pulse aeration box according to claim 1, characterized in that: The outer side of the U-shaped arc wall (122) is provided with multiple reinforcing ribs. The reinforcing ribs extend along the length of the air guide column (120). Each reinforcing rib is arranged at intervals along the arc extension direction of the U-shaped arc wall (122). The upper end of the reinforcing rib extends to the top side wall of the air chamber (110). The U-shaped arc wall (122) abuts against the groove wall of the matching groove (320) through the reinforcing ribs.

4. The energy-saving pulse aeration box according to claim 1, characterized in that: The main body (100) of the box includes a base shell (140) and an air vent (150). The air-containing cavity (110) and the air guide column (120) are disposed on the base shell (140). The air vent (150) is installed on the upper end of the base shell (140). The air vent (130) is disposed on the air vent (150). The air vent (150) covers the upper side of the hollow air guide hole (121). The air vent (150) and the base shell (140) enclose each other to form an air outlet channel (160) for connecting the hollow air guide hole (121) and the air vent (130).

5. The energy-saving pulse aeration box according to claim 4, characterized in that: The vent hood (150) has multiple vent holes (130) distributed on both sides of the vent hood (150). The vent channel (160) includes sub-channels corresponding to each of the vent holes (130). One end of each sub-channel is connected to the other and to the hollow air guide hole (121). The other end of each sub-channel is connected to the corresponding vent hole (130).

6. The energy-saving pulse aeration box according to claim 4, characterized in that: Fasteners are provided to fasten the vent hood (150) and the base shell (140), and the fasteners are also provided to the gas storage cup (300) to lock the gas storage cup (300) together with the vent hood (150) and the base shell (140).

7. The energy-saving pulse aeration box according to claim 4, characterized in that: The vent hood (150) is provided with a hood reinforcing rib (151), which forms the channel wall of the vent channel (160). The upper end face of the base shell (140) is provided with a slot (141) that is adapted to part of the hood reinforcing rib (151), and the hood reinforcing rib (151) is inserted into the slot (141).

8. The energy-saving pulse aeration box according to claim 1, characterized in that: The air intake structure (200) is an air intake box, which is located below the air-containing cavity (110) of the box body (100). The air intake box has an air intake cavity (210) with its opening facing downward. The side wall of the air intake cavity (210) is provided with a plurality of air intake and output holes (220). The projection of the air intake and output holes (220) in the vertical direction is within the range of the opening of the air-containing cavity (110). One end of the air intake box is provided with an air inlet (230), which is used to input aeration gas into the air intake cavity (210).

9. The energy-saving pulse aeration box according to claim 8, characterized in that: The box body (100) is provided with an external pipe section (142) for connecting to an external gas pipeline. One end of the air inlet box is provided with a connecting pipe section (240), and the air inlet (230) is provided in the connecting pipe section (240). The connecting pipe section (240) is inserted into the external pipe section (142). The other end of the air inlet box is fastened to the box body (100) by fasteners.

10. An MBR membrane module, characterized in that, include: membrane frame (500); MBR membrane arrays (600) are provided in multiples and installed in rows on the membrane frame (500); The energy-saving pulse aeration box according to any one of claims 1 to 9, wherein the energy-saving pulse aeration box is disposed at the lower part of the membrane frame (500), and multiple energy-saving pulse aeration boxes are disposed and arranged side by side on the lower side of the MBR membrane row (600). In each energy-saving pulse aeration box, at least three sets of air guide column (120), air storage cup (300) and air outlet (130) are disposed and arranged in a straight line.

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