Mold cavity partitioning and fixing structure, pulse aerator and membrane module

Abstract

This disclosure relates to the field of environmental water treatment technology, providing a cavity partitioning and fixing structure, a pulse aerator, and a membrane module. The cavity partitioning and fixing structure is disposed in the receiving space of a shell with a bottom opening. The cavity partitioning and fixing structure includes: a set of first cavity members, spaced apart; and a set of second cavity members, which are assembled with the first cavity members to form an interlocking connection to enclose at least one aeration chamber, and maintain a gap with the inner peripheral sidewall of the shell to form an air supply chamber communicating with the aeration chamber. The portion forming the interlocking connection protrudes at one end facing the bottom of the shell to form a hot-melt weld point, which is then melted during hot-melt welding to form a fixation. By assembling and hot-melting the separate first and second cavity members within the aerator shell to form the air supply chamber and aeration chamber, the underwater fixation is firm, eliminating the need for metal screws and avoiding corrosion, and effectively reducing processing difficulty.

Description

Technical Field

[0001] This disclosure relates to the field of environmental water treatment technology, and in particular to a cavity partitioning and fixing structure, a pulse aerator, and a membrane module. Background Technology

[0002] Membrane bioreactor (MBR) technology is a novel and highly efficient wastewater treatment process that combines efficient membrane separation technology with the traditional activated sludge process. The MBR achieves efficient sludge-water separation through hollow fiber membranes. Simultaneously, due to its effective retention capacity, it can retain microorganisms with long generation cycles, achieving deep wastewater purification. Furthermore, nitrifying bacteria can proliferate fully within the system, resulting in significant nitrification and enabling advanced phosphorus and nitrogen removal.

[0003] In related technologies, MBRs can be used in conjunction with aerators to continuously wash the membrane fibers through the gas-liquid two-phase flow generated by aeration, thereby removing sludge adsorbed on the membrane fiber surface. Some related technologies use pulse aerators with multiple aeration chambers to clean the membrane. However, some pulse aerators, such as the one in Chinese patent application CN202110000666.7, construct a structure with an air supply chamber and aeration chambers connected to it. It is evident that the air supply chamber and aeration chamber in the pulse aerator are separated by a partition structure containing spacers. However, this partition structure is integrally fixed to the outer shell, resulting in a complex structure that necessitates a one-piece molding of the aerator, increasing the manufacturing difficulty. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a cavity partitioning and fixing structure, a pulse aerator and a membrane module, to solve the problem of high processing difficulty caused by the pulse aerator's air supply chamber and aeration chamber being separated by an integral partitioning structure on the shell.

[0005] The first aspect of this disclosure provides a cavity partitioning and fixing structure disposed in the receiving space of a shell with a bottom opening. The cavity partitioning and fixing structure includes: a set of first cavity partitions, which are spaced apart; and a set of second cavity partitions, which are assembled with the set of first cavity partitions to form an interlocking connection to enclose at least one aeration chamber, and maintain a gap with the inner peripheral sidewall of the shell to form an air supply chamber communicating with the aeration chamber; wherein, the portion forming the interlocking connection protrudes at one end facing the bottom of the shell to form a hot melt welding point, so as to be melted in the hot melt welding to form a fixation.

[0006] In a first aspect embodiment, the first cavity member and the second cavity member are connected by an insert and a groove, and the insert forms a hot melt weld point protruding from the groove towards the bottom of the housing.

[0007] In an embodiment of the first aspect, the insert and the groove are interference-fitted.

[0008] In the first aspect of the embodiment, the insert and the groove are clearance-fitted.

[0009] In an embodiment of the first aspect, the insert is disposed in the first cavity member, and the groove is disposed in the second cavity member.

[0010] In an embodiment of the first aspect, the insert is formed from the edge of the first cavity member.

[0011] In the first aspect of the embodiment, the set of first diaphragm members are arranged at intervals along the arrangement of the aeration chambers, and the set of second diaphragm members fills the open side openings between adjacent first diaphragm members and surrounds and cooperates with the set of first diaphragm members.

[0012] In the first aspect of the embodiment, the first cavity member is fixedly connected to or integrally formed into the housing.

[0013] A second aspect of this disclosure provides a pulse aerator, comprising: a housing, a receiving space forming a bottom opening, and a cavity partitioning and fixing structure as described in any one aspect of the first aspect.

[0014] A third aspect of this disclosure provides a membrane module comprising: a pulse aerator as described in the second aspect and a filter membrane located above the pulse aerator.

[0015] As described above, this disclosure relates to the field of environmental water treatment technology, providing a cavity partitioning and fixing structure, a pulse aerator, and a membrane module. The cavity partitioning and fixing structure is disposed in the receiving space of a shell with a bottom opening. The cavity partitioning and fixing structure includes: a set of first cavity members, spaced apart; and a set of second cavity members, which are assembled with the first cavity members to form an interlocking connection to enclose at least one aeration chamber, and maintain a gap with the inner peripheral sidewall of the shell to form an air supply chamber communicating with the aeration chamber. The portion forming the interlocking connection protrudes at one end facing the bottom of the shell to form a hot-melt weld point, which is then melted during hot-melt welding to form a fixed structure. By assembling and hot-melting the separate first and second cavity members within the aerator shell to enclose the air supply chamber and aeration chamber, the structure is firmly fixed underwater, eliminating the need for metal screws and avoiding corrosion. It also effectively simplifies the shell structure, eliminating the need to directly process a shell with air supply and aeration chambers, thus effectively reducing processing difficulty. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of the pulse aerator in an embodiment of this disclosure is shown.

[0017] Figure 2A three-dimensional structural diagram showing the separation of the pulse aeration device housing and the gas diversion component in an embodiment of this disclosure is provided.

[0018] Figure 3 This diagram illustrates a three-dimensional structure of the pulse aeration device hood from an inverted perspective, as shown in an embodiment of this disclosure.

[0019] Figure 4 This is a three-dimensional structural diagram of the pulse aeration device hood from another inverted perspective in an embodiment of this disclosure.

[0020] Figure 5 The diagram shown is a top view of the pulse aerator in an embodiment of this disclosure.

[0021] Figure 6 exhibit Figure 5 A schematic diagram of the cross-sectional view along the EE direction.

[0022] Figure 7 A side view of the pulse aerator in an embodiment of this disclosure is shown.

[0023] Figure 8 exhibit Figure 7 A cross-sectional schematic diagram of a medium-pulse aerator along the FF direction.

[0024] Figure 9 An exploded view of the cavity partitioning and fixing structure in an embodiment of this disclosure is shown.

[0025] Figure 10 A side view of the second cavity member in an embodiment of this disclosure is shown.

[0026] Figure 11 It shows Figure 2 A magnified view of the structure of part H in the middle. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0028] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0030] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0031] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0032] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0033] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0034] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0035] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0036] In related technologies, the air supply chamber and aeration chamber in a pulse aerator are formed by a partition structure containing some partitions. However, the partition structure is fixed to the outer shell, and the structural distribution is relatively complex. This makes the aerator, which needs to be integrally molded, complex and increases the processing difficulty of manufacturing the aerator.

[0037] In view of this, the present disclosure provides a pulse aerator, which solves the problems in the related art by designing a scheme for assembling and hot-melting the partition components that constitute the aeration chamber.

[0038] Please refer to the following: Figures 1 to 4 . Figure 1 A three-dimensional structural schematic diagram of the pulse aerator in an embodiment of this disclosure is shown. Figure 2 A three-dimensional structural diagram showing the separation of the pulse aeration device housing and the gas diversion component in an embodiment of this disclosure is provided. Figure 3 This diagram illustrates a three-dimensional structure of the pulse aeration device hood from an inverted perspective, as shown in an embodiment of this disclosure. Figure 4 This is a three-dimensional structural diagram of the pulse aeration device hood from another inverted perspective in an embodiment of this disclosure.

[0039] The pulse aerator 100 includes a housing 110, a cavity partitioning and fixing structure 120, and an aeration assembly 130.

[0040] The housing 110 forms a receiving space 1100 with a bottom opening 1101. As an example, the housing 110 includes a top wall and peripheral sidewalls adjoining the edge of the top wall, with no bottom wall forming the opening 1101. The housing 110 is exemplary implemented as a cuboid, having a length direction and a width direction. The shape of the housing 110 can also vary depending on the layout of the aeration chamber 1103. The top of the housing 110 forms an air inlet 111 communicating with the receiving space 1100 and a plurality of air outlets 112. In some embodiments, the air inlet 111 is located at one end along the length direction of the housing 110. The air inlet 111 can be connected to an air source to allow air to enter the housing 110. In some embodiments, the plurality of air outlets 112 can be linearly spaced along one extending direction of the housing 110.

[0041] Optionally, in Figure 1 and Figure 2 In this structure, each vent 112 is connected to a gas diverter 140. The gas diverter 140 is fixedly mounted on the outer top wall of the housing 110. The gas diverter 140 has a central cavity communicating with the vent 112, and diversion ports extending laterally and evenly around the central cavity. Large air bubbles discharged from the vent 112 are broken into multiple smaller air bubbles by the gas diverter 140 and output through the diversion ports. These smaller air bubbles can uniformly scrub the membrane module within its coverage area and also agitate the nearby water, achieving the agitation effect of a sludge mixing pump.

[0042] Please see Figure 3 and Figure 4 The pulse aerator 100 includes a cavity partitioning and fixing structure 120 disposed in the receiving space 1100. A continuous annular air supply chamber 1102 is formed between the structure and the inner wall of the housing 110, and a plurality of mutually spaced aeration chambers 1103 are formed around the air supply chamber 1102. The cavity partitioning and fixing structure 120 forms ventilation structures 160 at at least two opposite sides at predetermined height positions, connecting the air supply chamber 1102 and each aeration chamber 1103. That is, through the continuous annular air supply chamber 1102 surrounding the plurality of aeration chambers 1103, communication between the aeration chamber 1103 and the air supply chamber 1102 is formed at least on both sides of each aeration chamber 1103, allowing the air supply chamber 1102 to uniformly supply air to each aeration chamber 1103.

[0043] The aeration chamber 1103 and the air outlet 112 (see...) Figure 2 (Set in pairs) Figure 2 The example shows four air vents 112. Figure 4The image shows an aeration chamber 1103 corresponding to each air outlet 112. Each aeration chamber 1103 is equipped with an aeration component 130, which connects to the corresponding air outlet 112. Optionally, the plurality of air outlets 112 can be arranged at equal intervals. Each aeration chamber 1103 can be coaxially arranged with the corresponding air outlet 112. The plurality of aeration chambers 1103 have the same dimensions, thus having the same capacity for uniform air output.

[0044] Please see Figure 4 , Figure 7 , Figure 8 and Figure 9 The diagram illustrates an embodiment of the mold cavity partitioning and fixing structure 120. Figure 7 A side view of the pulse aerator in an embodiment of this disclosure is shown. Figure 8 exhibit Figure 7 A cross-sectional schematic diagram of a medium-pulse aerator along the FF direction. Figure 9 An exploded structural diagram showing the cavity partitioning and fixing structure.

[0045] The cavity partitioning and fixing structure 120 includes a set of first cavity partitions 121 and a set of second cavity partitions 122. The set of first cavity partitions 121 and the set of second cavity partitions 122 are connected by assembly and fitting (also known as snap-fit), which can separate the aeration chamber 1103 and the air supply chamber 1102. The assembly is simple, efficient, and reliable.

[0046] The set of first partition members 121 can be fixedly connected to the inner wall of the housing 110 and are arranged at intervals according to the arrangement of the aeration chambers 1103 to separate the aeration chambers 1103, forming gaps with the inner peripheral sidewall of the housing 110. In this embodiment, the gaps are annular and continuous. In the above illustrated example, the first partition members 121 can be arranged parallel to each other along the length of the housing 110 to form a linear arrangement of aeration chambers 1103. Of course, in other embodiments, the arrangement can be varied depending on the number and arrangement of the aeration chambers 1103.

[0047] from Figure 4 and Figure 9It can be seen that continuous airtight connections are formed between the edge surfaces of the part of the first compartment member 121 close to the top of the housing 110 and the inner top wall and the two side inner side walls of the housing 110 respectively, so that no gas / water communication can be formed between the air supply chamber 1102 and the aeration chamber 1103 (and between the aeration chambers 1103) at the continuous airtight connection, which limits that gas delivery between the air supply chamber 1102 and the aeration chamber 1103 needs to be formed through the ventilation structure 160. Among the group of said first compartment members 121, gaps are formed respectively between the two first compartment members 121 at the head and tail positions in the arrangement direction and the corresponding two inner side walls of the housing 110, and gaps are also formed respectively between the opposite side edge portions 1211 of the end of the first compartment member 121 away from the top wall of the housing 110 and the other two inner side walls of the housing 110, thereby producing an annular continuous gap, so as to Figure 4 shown, after connecting a group of said second compartment members 122, said annular continuous air supply chamber 1102 can be formed in said annular continuous gap.

[0048] Optionally, the first compartment member 121 may be provided with a reinforcing structure, for example, one or more reinforcing ribs 1212 connecting the first compartment member 121 and the inner top wall of the housing 110 / the inner side wall of the housing 110, etc.

[0049] Said group of second compartment members 122 are in surrounding connection and cooperation with said group of first compartment members 121, so as to form each said aeration chamber 1103 on the side facing away from said gap (i.e., the inner side). In Figure 4 and Figure 9 , each first compartment member 121 is arranged at intervals along a straight line, and open sides are formed on opposite sides of adjacent first compartment members 121 in the arrangement direction, so there can be two second compartment members 122, which are respectively fixedly connected with the edge portions 1211 of the first compartment members 121 on the same side at the two sides to form a surrounding connection to fill said open sides and enclose each said aeration chamber 1103. It can be understood that in other examples, since the arrangement of the first compartment members 121 changes based on the required arrangement of the aeration chambers 1103, the number and size of each second compartment member 122 and the number of connected first compartment members 121 can all be changed. For example, for a plurality of aeration chambers 1103 in a "field" shaped layout, the middle "ten" shape can be constituted by the first compartment members 121, and the outer "mouth" shape can be constituted by the second compartment members 122. Therefore, the embodiment of the cavity dividing and fixing structure 120 in the drawings of the present disclosure is only an example, and is not limited thereto. Moreover, said group of second compartment members 122 can define said annular continuous air supply chamber 1102 in said gap on the side facing said gap (i.e., the outer side). Thereby, the structure of the pulse aerator 100 with a plurality of aeration chambers 1103 and the air supply chamber 1102 surrounding the aeration chambers 1103 is formed. The second compartment member 122 may be provided with a ventilation structure 160 to connect the air supply chamber 1102 and each aeration chamber 1103.

[0050] In addition, Figure 2 It shows Figure 9 The state after the first partition 121 and the second partition 122 are fitted and connected. Figure 11 It shows Figure 2 A magnified view of the structure of part H in the middle. From Figure 11 As can be seen, the insert protrudes partially from the groove 1221 towards the bottom of the housing 110. Since the first and second partition members 121 and 122 can be made of thermoplastic materials, the protruding portion of the insert can serve as a thermoplastic weld point 12111, which is melted away by thermoplastic welding to fix the first and second partition members 121 and 122 at a single point. Utilizing the protruding portion after the thermoplastic materials are interlocked as a weld point for thermoplastic welding to form a fixed connection eliminates the need for metal screws, reduces the risk of sewage corrosion, and provides a secure fixation, effectively extending the lifespan of the pulse aerator.

[0051] exist Figure 9 In this embodiment, the first cavity member 121 and the second cavity member 122 can be fitted together. The first cavity member 121 and the second cavity member 122 can be fitted together via a strip and a groove 1221, meaning the strip can be inserted into the groove 1221. Optionally, the strip and the groove 1221 can be interference-fitted for mutual locking and positioning. Alternatively, in other embodiments, a clearance fit can be used. Exemplarily, the strip is formed on the edge 1211 of the first cavity member 121, and the groove 1221 is formed on the second cavity member 122. Alternatively, in other embodiments, the objects on which the strip and the groove 1221 are located can be interchanged, and this is not a limitation.

[0052] It should be noted that although the illustrated embodiment shows the cavity fixing structure 120 applied to form a continuous annular air supply chamber 1102 surrounding each aeration chamber 1103 for uniform air supply, it is understood that the cavity fixing structure 120 can also be applied to form air supply chambers and aeration chambers with other layout structures, such as the aerator structure in Chinese patent application CN202110000666.7. Of course, the cavity fixing structure 120 will also change according to the layout structure of the air supply chambers and aeration chambers in the required application scenario. Therefore, it is not limited to the illustrated embodiment of this disclosure. The cavity fixing structure 120, which is assembled, fitted, connected and hot-melted, can achieve the purpose of reducing the difficulty of processing and forming the shell structure.

[0053] like Figure 9As shown, the first partition member 121 has an edge 1211 at one end away from the top of the housing 110, formed by a notch on the opposite side at that end, maintaining the gap with the adjacent inner wall of the housing 110. The edge 1211 has an example of a curved shape, such as a broken line, a curve, or a straight line connecting curves; the example in the figure is a broken line shape. The edge 1211 extends upward from the gap position maintaining the gap with the adjacent inner wall of the housing 110 to abut against the adjacent inner wall of the housing 110. The second partition member 122 can engage with the edge 1211 in a shape-fitting manner as follows: Figure 8 The spacer divides the space into an air supply chamber 1102 and an aeration chamber 1103 located on opposite sides. The advantage of this design is that the volume ratio between the aeration chamber 1103 and the air supply chamber 1102 can be adjusted. Specifically, if the first partition 121 is designed to be completely separated from the inner wall of the adjacent housing 110, the volume of the gap increases, meaning the volume of the air supply chamber 1102 increases while the volume of the aeration chamber 1103 decreases. Because the ventilation structure 160 is relatively low, a large portion of the upper volume of the air supply chamber 1102 becomes unusable, instead encroaching on and sacrificing the volume of the aeration chamber 1103, thus resulting in a lower aeration intensity for an aeration device of the same size. By designing the curved edge 1211 of the first partition member 121 and the cooperating second partition member 122, the space above the portion of the second partition member 122 that bends to the inner wall of the adjacent housing 110 becomes the volume of the aeration chamber 1103. With the same volume of pulse aerator 100, the volume of the aeration chamber 1103 can be effectively increased, thereby increasing the aeration intensity. It is understood that by configuring the edge 1211 and the second partition member 122 with different degrees of curvature, different volume ratios of the aeration chamber 1103 and the air supply chamber 1102 can be obtained.

[0054] Alternatively, in other embodiments, the first partition 121 may only be connected to the inner top wall of the housing 110 and not to the inner side wall of the housing 110. Instead, a second partition 122 is installed and connected to both the first partition 121 and the inner top wall. This creates a clearance gap between the second partition 122 and the opposing inner side wall of the housing 110, forming an air supply chamber. Furthermore, the second partition 122 and the first partition 121 together enclose various aeration chambers. Therefore, the assembly of a set of first partitions 121 and second partitions 122 to construct aeration and air supply chambers can take many forms, and is not limited to the illustrations.

[0055] Please refer to them together. Figure 9 and Figure 10 , Figure 10 The diagram shows a side view of the second cavity member in an embodiment of this disclosure.

[0056] As can be seen, the edge portion 1211 and the connected second cavity member 122 extend upwardly at an angle to the inner wall of the housing 110. In other embodiments, the edge portion 1211 and the connected second cavity member 122 may also be selected as a right-angled curved structure, and are not limited thereto.

[0057] See also Figure 3 and Figure 4 The ventilation structure 160 may include at least one ventilation opening 162 formed at the bottom end of the mold cavity partition fixing structure 120, and at least one air supply hole unit 161 formed on the wall surface of the mold cavity partition fixing structure 120. As an example, the air supply hole unit 161 may be positioned higher than the ventilation opening 162.

[0058] As an example, the cavity wall of each aeration chamber 1103 (i.e., the part of the aeration chamber 1103 enclosed by the cavity partition fixing structure 120) can be provided with multiple ventilation openings 162, for example Figure 3 and Figure 4 The four ventilation openings 162 shown are evenly distributed in pairs on a pair of opposing cavity walls of the aeration chamber 1103, cooperating with the annular continuous air supply chamber 1102 to uniformly introduce air into each aeration chamber 1103. Optionally, the four ventilation openings 162 can be arranged symmetrically around the central axis of the corresponding aeration chamber 1103. It is understood that in other embodiments, the number of ventilation openings 162 can vary; for example, a pair of ventilation openings 162 may be symmetrically distributed relative to the central axis of the aeration chamber 1103 on a pair of opposing cavity walls adjacent to the air supply chamber 1102. For example, in Figure 4 In this configuration, a pair of ventilation openings 162 can be arranged radially along the center of the aeration chamber 1103 on the pair of chamber walls, such as at positions A and B on the pair of chamber walls along the width direction perpendicular to the housing 110. Alternatively, they can be staggered in the width direction, such as at positions C and D on the pair of chamber walls at an angle.

[0059] In some embodiments, at least two air supply hole units 161 are symmetrically distributed on a pair of opposing cavity walls adjacent to the air supply cavity 1102 of the aeration cavity 1103, relative to the central axis of the aeration cavity 1103. Figure 3 and Figure 4 The diagram shows that there is a pair of air supply hole units 161, which are staggered in the width direction and symmetrically arranged on the walls of the pair of chambers relative to the central axis of the aeration chamber 1103, so as to cooperate with the annular continuous air supply chamber 1102 to uniformly ventilate each aeration chamber 1103.

[0060] The air supply unit 161 may include at least one air supply hole 1611, and two air supply holes 1611 are shown in the figure. The size and number of air supply holes 1611 in each air supply unit 161 are related to the air supply volume from the air supply chamber 1102 to the aeration chamber 1103. Since the pulse aerator 100 is placed in the wastewater to be treated, if the air supply holes 1611 are too small, they are easily blocked by sludge; if the air supply holes 1611 are too large or there are too many, it can cause gas fluctuations. Therefore, the appropriate size and number of air supply holes 1611 can be selected according to the required air supply effect.

[0061] In other embodiments, the number of air supply port units 161 and the number of air supply ports 1611 included can also vary. In one example, there may be four air supply port units 161, located one-to-one in... Figure 2 and Figure 4 Above each vent opening 162, each air supply unit 161 may include only one air supply port 1611, which is consistent with... Figure 2 and Figure 4 In the embodiment, four ventilation openings 162 are used in conjunction with four air supply holes 1611 for ventilation. The ventilation volume is similar, but the structure can be different, and the uniformity may be better.

[0062] Optionally, in Figure 11 The diagram shows that the air supply hole 1611 in the air supply hole unit 161 may have a variable diameter section 16111 with an increasing cross-sectional area from the air supply chamber 1102 to the aeration chamber 1103. As an example, the end of the air supply hole 1611 facing the aeration chamber 1103 may be made into a chamfered structure to form the variable diameter section 16111. Since the air pressure in the air supply hole unit 161 is relatively low, it is not easy to wash away the accumulated material in the hole. Therefore, when the water / air flow flows from the air supply chamber 1102 to the aeration chamber 1103, it can obtain a larger movement space through the variable diameter section 16111 after passing through the air supply hole 1611. This can effectively prevent the accumulation of debris in the air supply hole 1611, such as effectively preventing fibrous debris or even aquatic parasites (such as red nematodes) from getting stuck in the air supply hole 1611, thereby improving the reliability of the aeration device.

[0063] In addition, the ventilation structure 160 includes a higher-positioned air supply hole unit 161 and a lower-positioned ventilation opening 162. According to the aeration principle of the pulse aerator, gas introduced into the air inlet 111 flows downwards into the air supply chamber 1102, lowering the water level in the air supply chamber 1102 so that the gas first connects to the higher-positioned air supply hole unit 161. Therefore, the ventilation unit is used preferentially to supply air from the air supply chamber 1102 to the aeration chamber 1103. When the air supply hole unit 161 is blocked and cannot supply air, the water level can be further lowered to connect the gas and the ventilation opening 162, still allowing air supply from the air supply chamber 1102 to the aeration chamber 1103. That is to say, the ventilation opening 162 serves as a backup for the air supply hole unit 161 to supply air from the air supply chamber 1102 to the aeration chamber 1103, achieving a "main-backup" redundant air supply design, which can effectively improve the reliability of the pulse aerator 100.

[0064] It should be noted that, since each aeration chamber 1103 is equipped with a corresponding ventilation structure 160, therefore Figure 3 and Figure 4 Only some parts are marked, not all of them. In other embodiments, the plurality of air outlets 112 and aeration chambers 1103 may not be arranged in a straight line, but may be arranged in an array such as a square, ring, or circle, and are not limited to the structure in this embodiment.

[0065] like Figure 4 As shown, multiple aeration components 130 are respectively disposed in each of the aeration chambers 1103, for connecting the paired aeration chambers 1103 and the air outlets 112. For example... Figure 5 and Figure 6 The structure of the aeration component 130 is described in detail below. Figure 5 The diagram shown is a top view of the pulse aerator 100 in an embodiment of this disclosure. Figure 6 exhibit Figure 5 A schematic diagram of the cross-sectional view along the EE direction.

[0066] like Figure 6 As shown, the aeration assembly 130 includes an air outlet pipe 131 and an air collection hood 132. One end of the air outlet pipe 131 is connected to the inner top wall of the housing 110 and communicates with the air outlet 112, while the other end, away from the inner top wall of the housing 110, has an air inlet 1311. The air collection hood 132 is fitted upwards around the air outlet pipe 131, with its upper end maintaining a gap with the inner top wall of the housing 110 to form an air collection port 1321, and its lower end has a discharge port 1322. The discharge port 1322 is used to allow sludge sedimentation in the air collection chamber 1323 of the air collection hood 132 to be discharged from the discharge port 1322 into the aeration chamber 1103.

[0067] Referring to the airflow arrows in the diagram, the working principle of the pulse aerator 100 is explained. Gas is introduced through the air inlet 111 and flows downwards into the air supply chamber 1102. As the gas enters and rises in the air supply chamber 1102, it forces water out from the bottom of the housing 110, lowering the water level in the air supply chamber 1102. When the water level drops to expose the air supply hole unit 161, the air supply chamber 1102 connects to the aeration chamber 1103 through the air venting unit to supply air to the aeration chamber 1103. Similarly, as gas is continuously introduced into the aeration chamber 1103, the water level in the aeration chamber 1103 decreases. Since the gas collection hood 132 is connected to the aeration chamber 1103 through the gas collection port 1321, the water level also decreases until the water level drops to expose the air inlet 1311 at the bottom of the gas collection hood 132. The gas can enter the gas collection hood 132 through the air collection port 1321 and enter the air outlet pipe 131 through the air inlet 1311 to be sent out through the air outlet 112, so that it can be diverted and output by the gas diverter 140 to form aeration. After aeration is formed, the sewage in the aeration chamber 1103 rises and refills the aeration chamber 1103. Subsequently, by continuously filling the gas collection chamber 1323 of the gas collection hood 132 with air, the pulse aerator 100 will continuously repeat the above aeration process. Thus, the pulse aerator 100 will form an intermittent aeration. To facilitate the sewage being pushed out of the air supply chamber 1102 and the aeration chamber 1103, it can be as follows: Figure 4 As shown in the figure, the housing 110 may also be provided with overflow grooves 1104 for water to overflow at the bottom of the two inner side walls.

[0068] exist Figure 6 In this process, the vent pipe 131 can be integrally formed with the housing 110, or the vent pipe 131 can be fixedly connected to the inner top wall of the housing 110 by means of snap-fit, heat fusion or other methods.

[0069] like Figure 6 As can be seen, the air outlet pipe 131 is a pipe with a straight central axis that is coaxial with the air outlet 112, and the air collection hood 132 is a hood that is coaxial with the air outlet pipe 131 and extends in a straight line.

[0070] Alternatively, in other optional embodiments, the gas collecting hood 132 and the gas outlet pipe 131 may be eccentrically positioned along one extension direction of the housing 110, i.e., their central axes are not collinear. Alternatively, the gas outlet pipe 131 and the gas outlet hole 112 may be eccentrically positioned along the width direction of the housing 110. Alternatively, the gas outlet pipe 131 and the gas outlet hole 112 may be eccentrically positioned along both the length and width directions of the housing 110. The gas outlet pipe 131 is more conducive to breaking the instantaneous balance of pulse aeration, making pulse aeration easier to occur and more uniform, unaffected by environmental factors.

[0071] For example Figure 4 and Figure 6 As shown, optionally, a baffle 150 may be provided in the flow channel connecting the air inlet 111 of the housing 110 to the air supply chamber 1102. When gas flows into the air inlet 111, the flow velocity may be too high and it may directly rush out of the air supply chamber 1102. Furthermore, the downward rush of gas may also create turbulence, affecting the uniformity of air supply to the aeration chamber 1103 and potentially causing local disturbances. The baffle 150 can mitigate the impact force of the rushing gas, so that the gas impacting the baffle 150 is blocked and slowed down before flowing into the side air supply chamber 1102, allowing the gas to supply the air supply chamber 1102 smoothly, effectively balancing and stabilizing the supply / aeration of the pulse aerator 100. As an example, the flow channel may be vertical, in which case the baffle 150 may be located below the air inlet 111, either directly below or offset from directly below. Alternatively, in other embodiments, the flow channel may be of other shapes or segments, and is not limited thereto. For example, the baffle 150 may be a planar, polygonal, or arc-shaped baffle, etc. For example, the baffle 150 may be integrally connected to the housing 110. Further optionally, the baffle 150 may be integrally connected to the sidewall of the housing 110 adjacent to the air inlet 111 (for example, one end sidewall of the housing 110 in one extending direction). To enhance the strength of the baffle 150, its opposite ends may be respectively connected to the end sidewall and a first cavity member 121 adjacent to the end sidewall, while the other two ends of the baffle 150 maintain a distance from the corresponding inner sidewall of the housing 110 to allow gas to enter the air supply chamber 1102.

[0072] In another embodiment of this disclosure, a membrane module may also be provided. The membrane module includes a pulse aerator 100 as described in any of the previous embodiments, and a filter membrane located above the pulse aerator 100. The pulse aerator performs a scrubbing and cleaning action on the filter membrane during aeration. The membrane module including the pulse aerator 100 in this embodiment reduces energy consumption by more than 50% compared to conventional perforated tube aeration.

[0073] In summary, this disclosure relates to the field of environmental water treatment technology, providing a cavity partitioning and fixing structure, a pulse aerator, and a membrane module. The cavity partitioning and fixing structure is located in the accommodating space of a shell with a bottom opening. The cavity partitioning and fixing structure includes: a set of first cavity members, spaced apart; and a set of second cavity members, which are assembled with the first cavity members to form an interlocking connection to enclose at least one aeration chamber, and maintain a gap with the inner peripheral sidewall of the shell to form an air supply chamber communicating with the aeration chamber. The portion forming the interlocking connection protrudes at one end facing the bottom of the shell to form a hot-melt weld point, which is then melted during hot-melt welding to form a fixed structure. By assembling and hot-melting the separate first and second cavity members within the aerator shell to enclose the air supply chamber and aeration chamber, the structure is firmly fixed underwater, eliminating the need for metal screws and avoiding corrosion. It also effectively simplifies the shell structure, eliminating the need to directly machine a shell with air supply and aeration chambers, thus effectively reducing processing difficulty.

[0074] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A mold cavity partitioning and fixing structure, characterized in that, The mold cavity partitioning and fixing structure includes: (The structure is located within the receiving space of a shell with an open bottom.) A set of first-stage partition components are arranged at intervals; A set of second partition components are assembled with the set of first partition components to form an interlocking connection to enclose at least one aeration chamber, and a gap is maintained between them and the inner peripheral sidewall of the shell to form an air supply chamber communicating with the aeration chamber. The portion forming the interlocking connection protrudes at one end toward the bottom of the housing to form a hot melt weld point, which is then melted during the hot melt welding process to form a fixed connection.

2. The mold cavity partition fixing structure according to claim 1, wherein The first and second partitions are connected by inserts and grooves, and the inserts form hot melt weld points protruding from the grooves towards the bottom of the housing.

3. The mold cavity partition fixing structure according to claim 2, wherein The insert and the groove are interference fit.

4. The mold cavity partitioning and fixing structure according to claim 2, characterized in that, The insert and the groove are fitted with a clearance.

5. The mold cavity partitioning and fixing structure according to claim 2, characterized in that, The insert is disposed in the first cavity member, and the groove is disposed in the second cavity member.

6. The mold cavity partitioning and fixing structure according to claim 5, characterized in that, The insert is formed from the edge of the first cavity member.

7. The mold cavity partitioning and fixing structure according to claim 1, characterized in that, The first set of diaphragm members are arranged at intervals along the aeration chamber, and the second set of diaphragm members fills the open side openings between adjacent first diaphragm members and surrounds and cooperates with the first set of diaphragm members.

8. The mold cavity partition fixing structure according to claim 1, wherein The first cavity component is fixedly connected to or integrally formed into the housing.

9. A pulse aerator characterized by, include: The shell forms a receiving space with an opening at the bottom; The cavity partitioning and fixing structure as described in any one of claims 1 to 8.

10. A membrane module characterized by, include: The pulse aerator and the filter membrane located above the pulse aerator as described in claim 9.

Images