Lifting aerator

Abstract

This application provides a lift-type aerator. The lift-type aerator includes an annular seal, a check valve, a compressed air pipe, and an aeration pipe. The check valve includes a check body and a rigid housing. An annular groove is provided on the outer wall of the rigid housing, surrounding the circumference of the rigid housing. The annular seal is disposed within the annular groove and at least partially protrudes from the rigid housing. The aeration pipe communicates with the compressed air pipe. The rigid housing is located at the connection between the aeration pipe and the compressed air pipe. A portion of the rigid housing is located within the compressed air pipe and detachably connected to it, while another portion is located within the aeration pipe and detachably connected to it. A portion of the annular seal is sandwiched between the rigid housing and the compressed air pipe, and another portion is sandwiched between the rigid housing and the aeration pipe. The lift-type aerator improves assembly efficiency and reduces assembly costs.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a lift-type aerator. Background Technology

[0002] In wastewater treatment, aerators primarily transfer oxygen from the air into the mixed liquor, providing oxygen for the respiration of microorganisms in the activated sludge. Simultaneously, stirring and mixing ensure the mixed liquor is in a vigorous mixing state, guaranteeing sufficient contact between activated sludge, dissolved oxygen, and organic matter, preventing sludge sedimentation. Aerators are essential equipment for aerating and oxygenating wastewater. Because aerators are prone to clogging or aging, they require maintenance at regular intervals. To improve maintenance convenience, lift-type aerators are now widely used. For example, utility model patent application number 201420094389.6 discloses a lift-type aerator that effectively facilitates the inspection and maintenance of aerators under wastewater treatment system operating conditions. While these aerators effectively ensure wastewater treatment efficiency and facilitate control and cleaning, improving maintenance safety, a problem arises with corundum microporous aerators: when compressed air supply stops, wastewater can flow back into the aeration system pipeline, even reaching the air compressor and causing equipment damage. For example, utility model patent application number 201020240964.0 adds a check valve at the end of the corundum microporous aerator near the aeration system pipeline to prevent wastewater backflow. Similarly, invention patent application number 201210067430.6 adds a check device at the end of the corundum microporous aerator near the aeration system pipeline to prevent wastewater backflow. However, these lift-type aerators still have the following problems:

[0003] 1. The added check device or check valve needs to be installed in the corundum microporous aeration pipe with a rigid structure as the outer shell. The check valve and the pipe wall of the corundum microporous aeration pipe need to be sealed.

[0004] 2. A sealing treatment is required between the corundum microporous aeration pipe and the aeration system pipeline;

[0005] Therefore, the assembly of liftable aerators requires a large amount of manpower and resources, resulting in high assembly costs and low assembly efficiency. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lift-type aerator that can improve assembly efficiency and reduce assembly costs.

[0007] The objective of this invention is achieved through the following technical solution:

[0008] A lift-type aerator is used for vertically connecting to the sedimentation tank, the lift-type aerator comprising:

[0009] Annular seal;

[0010] A check valve, comprising a check body and a rigid housing, wherein the check body is connected to the interior of the rigid housing, and an annular groove is provided on the outer wall of the rigid housing, the annular groove being arranged circumferentially around the rigid housing, and an annular seal being disposed within the annular groove, and the annular seal at least partially protruding from the rigid housing.

[0011] Compressed air hose;

[0012] An aeration pipe is provided, which is connected to a compressed air pipe. A rigid outer shell is disposed at the connection between the aeration pipe and the compressed air pipe. A portion of the rigid outer shell is located inside the compressed air pipe and is detachably connected to the compressed air pipe, and another portion of the rigid outer shell is located inside the aeration pipe and is detachably connected to the aeration pipe. A portion of the annular seal is sandwiched between the rigid outer shell and the compressed air pipe, and another portion of the annular seal is sandwiched between the rigid outer shell and the aeration pipe.

[0013] In one embodiment, at least two first stop members are provided at the end of the compressed air pipe near the aeration pipe. Both first stop members are connected to the pipe wall of the compressed air pipe, and the two first stop members are arranged at intervals along the circumference of the compressed air pipe to form two first stop notches.

[0014] At least two second stop members are provided at the end of the aeration pipe near the compressed air pipe. Both second stop members are connected to the pipe wall of the aeration pipe, and the two second stop members are arranged at intervals along the circumference of the aeration pipe to form two second stop notches.

[0015] The rigid shell has two annular fasteners protruding from its outer wall. The two annular fasteners are located opposite each other at both ends of the rigid shell. The two annular fasteners are arranged around the outer wall of the rigid shell to form an annular groove. Each annular fastener has at least two through grooves. The extension direction of each through groove intersects the extension direction of the annular groove. The two first stops of the compressed air pipe are slidably disposed in the two through grooves of one of the annular fasteners. The two second stops of the aeration pipe are slidably disposed in the two through grooves of the other annular fastener.

[0016] The aeration pipe is rotatably connected to the rigid housing, and the compressed air pipe is rotatably connected to the rigid housing;

[0017] When each of the first stop members slides along the corresponding through groove to disengage from the through groove, the first stop member compresses the annular seal, the corresponding annular fixing member passes through the first stop notch, and the compressed air pipe rotates relative to the rigid housing so that the first stop member abuts against the side of the corresponding annular fixing member closer to the other annular fixing member; when the second stop member slides along the corresponding through groove to disengage from the through groove, the second stop member compresses the annular seal, the corresponding annular fixing member passes through the second stop notch, and the aeration pipe rotates relative to the rigid housing so that the second stop member abuts against the side of the corresponding annular fixing member closer to the other annular fixing member.

[0018] In one embodiment, the annular seal extends in a wavy manner in the extension direction of any of the through slots of any of the annular fasteners.

[0019] In one embodiment, the rigid shell and the two annular fasteners are integrally formed.

[0020] In one embodiment, the inner diameter of both the aeration pipe and the inner diameter of the compressed air pipe are larger than the outer diameter of the annular fastener.

[0021] In one embodiment, the extension direction of each of the through slots is perpendicular to the extension direction of the annular groove.

[0022] In one embodiment, the first stop is a stainless steel first stop.

[0023] In one embodiment, the first stop and the compressed air pipe are integrally formed.

[0024] In one embodiment, the second stop is a corundum microporous second stop.

[0025] In one embodiment, the second stop and the aeration pipe are integrally formed.

[0026] In one embodiment, the number of the first stop members is three, all three first stop members are connected to the wall of the compressed air pipe, and the three first stop members are arranged at intervals along the circumference of the compressed air pipe to form three first stop notches.

[0027] The number of second stop members is three. All three second stop members are connected to the pipe wall of the aeration pipe, and the three second stop members are arranged at intervals along the circumference of the aeration pipe to form three second stop notches.

[0028] Each of the aforementioned annular fasteners has at least three through slots. The three first stop members of the compressed air pipe are slidably disposed in the three through slots of one of the annular fasteners, and the three second stop members of the aeration pipe are slidably disposed in the three through slots of the other annular fastener.

[0029] In one embodiment, the rigid housing is a stainless steel housing.

[0030] In one embodiment, the annular seal is a fluororubber ring, an EPDM rubber ring, a silicone rubber ring, or a fluorosilicone rubber ring.

[0031] In one embodiment, the aeration tube is a corundum microporous aeration tube.

[0032] In one embodiment, the check valve is a butterfly check valve.

[0033] Compared with the prior art, the present invention has at least the following advantages:

[0034] The lifting aerator of the present invention has an annular groove on the outer wall of the rigid shell, and an annular seal is disposed in the annular groove. The annular seal at least partially protrudes from the rigid shell, thus enabling the annular seal to achieve the sealing of the rigid shell, that is, the rigid shell achieves the sealing of the check valve through the annular seal. Further, a portion of the rigid shell is located inside and detachably connected to the compressed air pipe, and another portion of the rigid shell is located inside and detachably connected to the aeration pipe. A portion of the annular seal is sandwiched between the rigid shell and the compressed air pipe, and the other portion of the annular seal is sandwiched between the rigid shell and the aeration pipe, thus enabling the check valve to be located at the connection between the aeration pipe and the compressed air pipe. In this way, when a part of the rigid shell is assembled into the compressed air pipe, a portion of the annular seal is sandwiched between the rigid shell and the compressed air pipe, meaning the end of the compressed air pipe is sealed by the annular seal. Similarly, when the other part of the rigid shell is assembled into the aeration pipe, the other part of the annular seal is sandwiched between the rigid shell and the aeration pipe, meaning the end of the aeration pipe is sealed by the annular seal. Thus, when the check valve is assembled into the compressed air pipe and the aeration pipe, the sealing of the check valve, the compressed air pipe, and the aeration pipe is completed, effectively reducing the sealing process and thus improving the assembly efficiency of the lift aerator and reducing its assembly cost. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a lifting aerator according to an embodiment of the present invention;

[0037] Figure 2 for Figure 1 The diagram shows a cross-sectional view of a lift-type aerator.

[0038] Figure 3 for Figure 1 A magnified view of part A of the lift-type aerator shown;

[0039] Figure 4 for Figure 1 A partial view of the lift-type aerator shown;

[0040] Figure 5 for Figure 1 Another partial view of the lift-type aerator shown;

[0041] Figure 6 for Figure 1 Another partial view of the lift-type aerator shown;

[0042] Figure 7 for Figure 1 Another partial view of the lift-type aerator shown;

[0043] Figure 8 for Figure 1 A partial cross-sectional view of the lift-type aerator shown. Detailed Implementation

[0044] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0045] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0047] This application provides a lift-type aerator for vertical connection in a sedimentation tank. The lift-type aerator includes an annular seal, a check valve, a compressed air pipe, and an aeration pipe. The check valve includes a check body and a rigid housing. The check body is connected to the interior of the rigid housing. An annular groove is provided on the outer wall of the rigid housing, surrounding the circumference of the rigid housing. The annular seal is disposed within the annular groove, and at least partially protrudes from the rigid housing. The aeration pipe communicates with the compressed air pipe. The rigid housing is located at the connection between the aeration pipe and the compressed air pipe. A portion of the rigid housing is located within the compressed air pipe and detachably connected to it, while another portion is located within the aeration pipe and detachably connected to it. A portion of the annular seal is sandwiched between the rigid housing and the compressed air pipe, and another portion is sandwiched between the rigid housing and the aeration pipe.

[0048] The aforementioned lift-type aerator features an annular groove on the outer wall of the rigid outer shell. An annular seal is positioned within this groove, and at least partially protrudes from the rigid outer shell, ensuring its sealing. This means the annular seal effectively seals the rigid outer shell, thus providing a check valve seal. Furthermore, a portion of the rigid outer shell is located within and detachably connected to the compressed air pipe, while another portion is located within and detachably connected to the aeration pipe. A portion of the annular seal is sandwiched between the rigid outer shell and the compressed air pipe, and another portion is sandwiched between the rigid outer shell and the aeration pipe, thus placing the check valve at the connection between the aeration pipe and the compressed air pipe. When a portion of the rigid outer shell is assembled into the compressed air pipe, a portion of the annular seal is sandwiched between the rigid outer shell and the compressed air pipe, thus sealing the end of the compressed air pipe through the annular seal. Similarly, when the other portion of the rigid outer shell is assembled into the aeration pipe, the other portion of the annular seal is sandwiched between the rigid outer shell and the aeration pipe, again sealing the end of the aeration pipe through the annular seal. Thus, the sealing of the check valve, compressed air pipe, and aeration pipe is completed when the check valve is assembled into the compressed air pipe and the aeration pipe, effectively reducing the sealing process and improving the assembly efficiency of the lift aerator, while also significantly reducing its assembly cost.

[0049] To better understand the lift-type aerator of this application, the following further explanation is provided:

[0050] Please refer to the following: Figures 1 to 3 One embodiment of the lift-type aerator 10 includes an annular seal 100, a check valve 200, a compressed air pipe 300, and an aeration pipe 400. The check valve 200 includes a check body 210 and a rigid housing 220. The check body 210 is connected to the interior of the rigid housing 220. An annular positioning groove 201 is provided on the outer wall of the rigid housing 220. The annular positioning groove 201 is arranged circumferentially around the rigid housing 220. The annular seal 100 is disposed in the annular positioning groove 201, and the annular seal 100 at least partially protrudes from the rigid housing 220. The aeration pipe 400 is connected to the compressed air pipe 300. The rigid housing 220 is disposed at the connection between the aeration pipe 400 and the compressed air pipe 300. A portion of the rigid housing 220 is located inside the compressed air pipe 300 and is detachably connected to the compressed air pipe 300. Another portion of the rigid housing 220 is located inside the aeration pipe 400 and is detachably connected to the aeration pipe 400. A portion of the annular seal 100 is sandwiched between the rigid housing 220 and the compressed air pipe 300. Another portion of the annular seal 100 is sandwiched between the rigid housing 220 and the aeration pipe 400.

[0051] The aforementioned lift-type aerator 10 has an annular groove 201 on the outer wall of the rigid housing 220. An annular seal 100 is disposed within the annular groove 201, and at least partially protrudes from the rigid housing 220, thus ensuring the sealing of the rigid housing 220. In other words, the annular seal 100 seals the check valve 200. Furthermore, a portion of the rigid housing 220 is located within and detachably connected to the compressed air pipe 300, while another portion is located within and detachably connected to the aeration pipe 400. A portion of the annular seal 100 is sandwiched between the rigid housing 220 and the compressed air pipe 300, and the other portion is sandwiched between the rigid housing 220 and the aeration pipe 400, thus ensuring the check valve 200 is located between the aeration pipe 400 and the compressed air pipe 300. At the connection of the air pipe 300, when a part of the rigid housing 220 is assembled into the compressed air pipe 300, a part of the annular seal 100 is sandwiched between the rigid housing 220 and the compressed air pipe 300, meaning the end of the compressed air pipe 300 is sealed by the annular seal 100. Similarly, when another part of the rigid housing 220 is assembled into the aeration pipe 400, another part of the annular seal 100 is sandwiched between the rigid housing 220 and the aeration pipe 400, meaning the end of the aeration pipe 400 is sealed by the annular seal 100. Thus, when the check valve 200 is assembled into the compressed air pipe 300 and the aeration pipe 400, the seal of the check valve 200, the compressed air pipe, and the aeration pipe 400 is completed, effectively reducing the sealing process and thus improving the assembly efficiency of the lift aerator 10 and reducing the assembly cost of the lift aerator 10.

[0052] It is understandable that lift-type aerators still have the following problems:

[0053] 1. The corundum microporous aeration pipe is connected to the aeration system pipeline through a double external threaded joint. In the presence of an annular seal, in order to ensure the sealing effect of the connection between the corundum microporous aeration pipe and the aeration system pipeline, the screw tightness is relatively high, which makes the disassembly and installation of the corundum microporous aeration pipe less convenient.

[0054] 2. The check valve or check device installed in the corundum microporous aeration pipe is not easy to disassemble and install, and it is difficult to quickly disassemble it for use in other corundum microporous aeration pipes during the maintenance of the corundum microporous aeration pipe.

[0055] As mentioned above, both the aeration pipe and the compressed air pipe are detachably connected to the check valve. While this avoids the problem of low assembly efficiency caused by the need to gradually seal the moving ends of the aeration pipe, the ends of the compressed air pipe, and the check valve, the connection between the aeration pipe and the compressed air pipe requires high connection strength to ensure the stability of the connection due to the high internal pressure after compressed air is introduced. Generally, a double external threaded connector is used for connection. However, to ensure connection strength, the double external threaded connector has a high tightness when screwed into the aeration pipe and the air compression pipe. This forces the screwing process of the double external threaded connector to take a lot of effort and time, and may even require the use of tools. Since the maintenance frequency of the corundum microporous aeration pipe is high, it is necessary to improve the ease of disassembly and installation of the corundum microporous aeration pipe.

[0056] Generally, check valves are built into the aeration pipe. This requires sealing the check valve to the pipe wall before connecting the aeration pipe to the compressed air pipe. However, to ensure a good seal between the check valve and the aeration pipe, and given the relatively small inner diameter of the aeration pipe, assembling the check valve requires considerable effort and time, and may even require tools. Furthermore, check valves often require the use of springs, which increases the frequency of maintenance. Therefore, it is necessary to improve the ease of disassembly and installation of check valves.

[0057] In this application, the following design was made to enable quick disassembly of the corundum microporous aeration tube and the check valve:

[0058] Please refer to the following: Figures 3 to 6In one embodiment, at least two first stop members 500 are provided at the end of the compressed air pipe 300 near the aeration pipe 400. Both first stop members 500 are connected to the pipe wall of the compressed air pipe 300, and are arranged at intervals along the circumference of the compressed air pipe 300 to form two first stop notches 501. Further, at least two second stop members 600 are provided at the end of the aeration pipe 400 near the compressed air pipe 300. Both second stop members 600 are connected to the pipe wall of the aeration pipe 400, and are arranged at intervals along the circumference of the aeration pipe 400 to form two second stop notches 601. Furthermore, the outer wall of the rigid shell 220 is provided with two annular fasteners 230, which are located opposite each other at both ends of the rigid shell 220. The two annular fasteners 230 form annular placement grooves 201 around the outer wall of the rigid shell 220. Each annular fastener 230 has at least two through grooves 202, and the extending direction of each through groove 202 intersects the extending direction of the annular placement groove 201. The two first stoppers 500 of the compressed air pipe 300 are slidably disposed in the two through grooves 202 of one of its annular fasteners 230, and the two second stoppers 600 of the aeration pipe 400 are slidably disposed in the two through grooves 202 of the other annular fastener 230. Furthermore, the aeration pipe 400 and the rigid shell 220 are rotatably connected, and the compressed air pipe 300 is also rotatably connected to the rigid shell 220. Furthermore, when each first stop 500 slides along the corresponding through groove 202 to disengage from the through groove 202, the first stop 500 compresses the annular seal 100, the corresponding annular fixing member 230 passes through the first stop notch 501, and the compressed air pipe 300 rotates relative to the rigid shell 220 so that the first stop 500 abuts against the side of the corresponding annular fixing member 230 near the other annular fixing member 230; when the second stop 600 slides along the corresponding through groove 202 to disengage from the through groove 202, the second stop 600 compresses the annular seal 100, the corresponding annular fixing member 230 passes through the second stop notch 601, and the aeration pipe 400 rotates relative to the rigid shell 220 so that the second stop 600 abuts against the side of the corresponding annular fixing member 230 near the other annular fixing member 230.

[0059] First, the two first stop members 500 of the compressed air pipe 300 are arranged at intervals along the circumference of the compressed air pipe 300 to form two first stop notches 501. Each annular fixing member 230 is provided with at least two through slots 202, the extension direction of each through slot 202 intersecting the extension direction of the annular positioning slot 201. This ensures that when the compressed air pipe 300 drives the first stop member 500 to slide into the rigid housing 220, the annular fixing member 230, through the corresponding first stop notch 501, connects with the compressed air pipe 300. With zero clearance setting, the first stop 500 is allowed to slide further into the rigid housing 220 along the through groove 202, so that when the compressed air pipe 300 drives the first stop 500 to rotate relative to the rigid housing 220, the first stop 500 can be more easily abutted against the side of the corresponding annular fixing member 230 near the other annular fixing member 230, that is, the assembly of the compressed air pipe 300 on the rigid housing 220 can be more easily realized, which improves the ease of assembly and disassembly of the check valve 200 and the compressed air pipe 300.

[0060] Secondly, the two second stop members 600 of the aeration pipe 400 are arranged at intervals along the circumference of the aeration pipe 400 to form two second stop notches 601. Each annular fixing member 230 has at least two through grooves 202, and the extending direction of each through groove 202 intersects the extending direction of the annular positioning groove 201. This ensures that when the aeration pipe 400 drives the second stop member 600 to slide into the rigid outer shell 220, the annular fixing member 230, through the corresponding second stop notch 601, connects with the aeration pipe 400. The avoidance setting allows the second stop 600 to slide further into the rigid housing 220 along the through groove 202, so that when the aeration pipe 400 drives the second stop 600 to rotate relative to the rigid housing 220, the second stop 600 can be more easily abutted against the side of the corresponding annular fixing member 230 near the other annular fixing member 230. In other words, the assembly of the aeration pipe 400 on the rigid housing 220 can be more easily realized, which improves the ease of assembly and disassembly of the check valve 200 and the aeration pipe 400.

[0061] Next, when each first stop 500 slides along the corresponding through groove 202 to disengage from the through groove 202, the first stop 500 presses against the annular seal 100. When the second stop 600 slides along the corresponding through groove 202 to disengage from the through groove 202, the second stop 600 presses against the annular seal 100. In this way, the annular seal 100 exerts a force on the first stop 500 against the corresponding annular fixing member 230, and the annular seal 100 exerts a force on the second stop 600 against the corresponding annular fixing member 230. This better ensures the connection strength between the aeration pipe 400 and the compressed air pipe 300 and the check valve 200, and better ensures the stability of the check valve 200 connected to the aeration pipe 400 and the compressed air pipe 300, thereby better ensuring the structural stability of the lift aerator 10.

[0062] In summary, the ease of assembly and disassembly of the check valve 200 and the aeration pipe 400 has been improved. This improved ease of assembly and disassembly of the check valve 200 and the aeration pipe 400, while ensuring the structural stability of the lift aerator 10, has also enabled the quick disassembly and assembly of the check valve 200 and the aeration pipe 400, thus significantly improving the ease of use of the lift aerator 10.

[0063] It should be noted that by placing part of the check valve 200 inside the aeration pipe 400 and the other part inside the compressed air pipe 300, the installation of the check valve 200 can be completed at the outer ends of the aeration pipe 400 and the compressed air pipe 300. This initially improves the convenience of assembling and disassembling the check valve 200.

[0064] It should also be noted that when the rigid shell 220 is connected to the aeration pipe 400 and the compressed air pipe 300 respectively, the annular seal 100 is sandwiched between the first stop 500 and the second stop 600. That is, the annular seal 100 is squeezed into a compressed state by the first stop 500 and the second stop 600, thereby causing the annular seal 100 to tightly abut against the first stop 500 and the second stop 600. At the same time, the annular seal 100 is also sandwiched between the aeration pipe 400 and the rigid shell 220, and also between the compressed air pipe 300 and the rigid shell 220. This effectively achieves double sealing of the ends of the aeration pipe 400 and the compressed air pipe 300, further improving the sealing effect of the aeration pipe 400 and the compressed air pipe 300 while ensuring the sealing effect of the check valve 200.

[0065] Furthermore, when the rigid shell is connected to the compressed air pipe, the side of the first stop member away from the air aeration pipe is positioned close to the outer wall of the rigid shell, which better ensures the stopping effect of the first stop member and the annular fixing member.

[0066] Furthermore, when the rigid shell is connected to the aeration pipe, the side of the second stop away from the aeration pipe is located near the outer wall of the rigid shell, which better ensures the stopping effect of the second stop and the fixing member.

[0067] Furthermore, when the rigid housing is connected to the compressed air pipe, a first snap-fit ​​member protrudes from the side of the first stop member near the corresponding annular fixing member. Further, a first snap-fit ​​groove is provided on the side of the annular fixing member near the corresponding first stop member, and the first snap-fit ​​member snaps into the first snap-fit ​​groove. It can be understood that after pushing the compressed air pipe into the rigid housing and squeezing the annular seal, the compressed air pipe is simultaneously rotated to rotate relative to the rigid housing. This effectively achieves the first snap-fit ​​member snapping into the first snap-fit ​​groove, and under the action of the annular seal, the snap-fit ​​stability of the first snap-fit ​​member at the first snap-fit ​​groove is good, further improving the connection stability between the compressed air pipe and the check valve. Similarly, after pushing the compressed air pipe into the rigid housing and squeezing the annular seal, the compressed air pipe is simultaneously rotated to rotate relative to the rigid housing. This effectively disengages the first snap-fit ​​member from the first snap-fit ​​groove, thereby ensuring the ease of installation and disassembly of the compressed air pipe and the check valve.

[0068] Furthermore, when the rigid shell is connected to the aeration pipe, a second snap-fit ​​component protrudes from the side of the second stop near the corresponding annular fixing component. Further, a second snap-fit ​​groove is provided on the side of the annular fixing component near the corresponding second stop, and the second snap-fit ​​component snaps into the second snap-fit ​​groove. It can be understood that after pushing the aeration pipe into the rigid shell and squeezing the annular sealing component, the aeration pipe is simultaneously rotated to rotate relative to the rigid shell. This effectively achieves the second snap-fit ​​component snapping into the second snap-fit ​​groove, and under the action of the annular sealing component, the snap-fit ​​stability of the second snap-fit ​​component at the second snap-fit ​​groove is good, further improving the connection stability between the aeration pipe and the check valve. Similarly, after pushing the aeration pipe into the rigid shell and squeezing the annular sealing component, the aeration pipe is simultaneously rotated to rotate relative to the rigid shell. This effectively disengages the second snap-fit ​​component from the second snap-fit ​​groove, thereby ensuring the ease of installation and disassembly of the aeration pipe and the check valve.

[0069] Furthermore, the rigid outer shell is an annular shell, and its outer diameter is less than or equal to 4 / 5 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid outer shell is greater than or equal to 1 / 5 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid outer shell is equal to 2 / 3 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid outer shell is less than or equal to 4 / 5 of the inner diameter of the compressed air pipe. Further, the outer diameter of the rigid outer shell is greater than or equal to 1 / 5 of the inner diameter of the compressed air pipe. Further, the outer diameter of the rigid outer shell is equal to 2 / 3 of the inner diameter of the compressed air pipe. This design effectively ensures sufficient airflow while maintaining the stability of the connection between the aeration pipe and the compressed air pipe to the check valve.

[0070] Please refer to the following: Figures 4 to 7 In one embodiment, there are three first stop members 500, each connected to the wall of the compressed air pipe 300, and the three first stop members 500 are arranged at intervals along the circumference of the compressed air pipe 300 to form three first stop notches 501. Further, there are three second stop members 600, each connected to the wall of the aeration pipe 400, and the three second stop members 600 are arranged at intervals along the circumference of the aeration pipe 400 to form three second stop notches 601. Furthermore, each annular fixing member 230 is provided with at least three through slots 202. The three first stop members 500 of the compressed air pipe 300 are slidably disposed in the three through slots 202 of one of the annular fixing members 230, and the three second stop members 600 of the aeration pipe 400 are slidably disposed in the three through slots 202 of the other annular fixing member 230, which further ensures the stability of the aeration pipe 400 and the compressed air pipe 300 connected to the check valve 200.

[0071] Please refer to the following: Figure 3 , Figure 6 and Figure 8In one embodiment, the annular seal 100 extends in a wavy pattern along the extension direction of any through groove 202 of any annular fastener 230. It can be understood that the wavy extension of the annular seal 100, when fitted onto the outer wall of the rigid housing 220, results in an expanded and elongated state with a wavy texture. This ensures that when the aeration pipe 400 and the air compression pipe are connected to the rigid housing 220, the interference between the pipe walls of the aeration pipe 400 and the compressed air pipe 300 and the annular seal 100 is relatively weak. Combined with the good extensibility of the wavy texture of the annular seal 100, it allows the annular seal 100 to reach the first stop. When the force applied by the first stop 500 and the second stop 600 is relatively small, the annular seal 100 is compressed by the first stop 500 and the second stop 600. At this time, the annular seal 100 contracts with a wavy pattern and the width of the annular seal 100 increases, which enhances the interference between the annular seal 100 and the pipe wall of the aeration pipe 400 and the pipe wall of the compressed air pipe 300, respectively, thus ensuring the sealing effect between the rigid shell 220, the aeration pipe 400 and the compressed air pipe 300.

[0072] In one embodiment, the rigid shell and the two annular fasteners are integrally formed.

[0073] In one embodiment, the inner diameter of both the aeration pipe and the compressed air pipe is larger than the outer diameter of the annular fastener.

[0074] Please refer to the following: Figures 6 to 7 In one embodiment, the extension direction of each through groove 202 is perpendicular to the extension direction of the annular placement groove 201.

[0075] In one embodiment, the first stop is a stainless steel first stop.

[0076] In one embodiment, the first stop and the compressed air pipe are integrally formed.

[0077] In one embodiment, the second stop is a corundum microporous second stop.

[0078] In one embodiment, the second stop and the aeration pipe are integrally formed.

[0079] In one embodiment, the rigid housing is a stainless steel housing.

[0080] In one embodiment, the annular seal is a fluororubber ring, an EPDM rubber ring, a silicone rubber ring, or a fluorosilicone rubber ring.

[0081] In one embodiment, the aeration tube is a corundum microporous aeration tube.

[0082] In one embodiment, the check valve is a butterfly check valve. Further, the rigid housing serves as the valve body, and the check body includes a locking block, spring, valve disc, and vertical rod, among other structures that enable the check function. The butterfly check valve is a conventional check valve in the art. This application only aims to protect the material and structure of the rigid housing; therefore, the structure of the check body, as well as the connection and positional relationship between the check body and the rigid housing, will not be described in detail.

[0083] Compared with the prior art, the present invention has at least the following advantages:

[0084] The lifting aerator 10 of the present invention has an annular groove 201 on the outer wall of the rigid shell 220, and an annular seal 100 disposed in the annular groove 201, with the annular seal 100 at least partially protruding from the rigid shell 220, thus enabling the annular seal 100 to achieve the sealing of the rigid shell 220, that is, the annular seal 100 achieves the sealing of the check valve 200 through the rigid shell 220. Further, a portion of the rigid shell 220 is located within and detachably connected to the compressed air pipe 300, and another portion of the rigid shell 220 is located within and detachably connected to the aeration pipe 400. A portion of the annular seal 100 is sandwiched between the rigid shell 220 and the compressed air pipe 300, and another portion of the annular seal 100 is sandwiched between the rigid shell 220 and the aeration pipe 400, thus enabling the check valve 200 to be disposed between the aeration pipe 400 and the compressed air pipe 300. At the connection of the air pipe 300, when a part of the rigid housing 220 is assembled into the compressed air pipe 300, a part of the annular seal 100 is sandwiched between the rigid housing 220 and the compressed air pipe 300, meaning the end of the compressed air pipe 300 is sealed by the annular seal 100. Similarly, when another part of the rigid housing 220 is assembled into the aeration pipe 400, another part of the annular seal 100 is sandwiched between the rigid housing 220 and the aeration pipe 400, meaning the end of the aeration pipe 400 is sealed by the annular seal 100. Thus, when the check valve 200 is assembled into the compressed air pipe 300 and the aeration pipe 400, the seal of the check valve 200, the compressed air pipe, and the aeration pipe 400 is completed, effectively reducing the sealing process and thus improving the assembly efficiency of the lift aerator 10 and reducing the assembly cost of the lift aerator 10.

[0085] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A lifting aerator, characterized in that, The lift aerator includes: Annular seal; A check valve, comprising a check body and a rigid housing, wherein the check body is connected to the interior of the rigid housing, and an annular groove is provided on the outer wall of the rigid housing, the annular groove being arranged circumferentially around the rigid housing, and an annular seal being disposed within the annular groove, and the annular seal at least partially protruding from the rigid housing. Compressed air hose; An aeration pipe is provided, which is connected to a compressed air pipe. A rigid outer shell is disposed at the connection between the aeration pipe and the compressed air pipe. A portion of the rigid outer shell is located inside the compressed air pipe and is detachably connected to the compressed air pipe. Another portion of the rigid outer shell is located inside the aeration pipe and is detachably connected to the aeration pipe. A portion of the annular seal is sandwiched between the rigid outer shell and the compressed air pipe. Another portion of the annular seal is sandwiched between the rigid outer shell and the aeration pipe. Among them, the check valve is a butterfly check valve, and the rigid shell is the valve body of the butterfly check valve; At least two first stop members are provided at the end of the compressed air pipe near the aeration pipe. Both first stop members are connected to the pipe wall of the compressed air pipe, and the two first stop members are arranged at intervals along the circumference of the compressed air pipe to form two first stop notches. At least two second stop members are provided at the end of the aeration pipe near the compressed air pipe. Both second stop members are connected to the pipe wall of the aeration pipe, and the two second stop members are arranged at intervals along the circumference of the aeration pipe to form two second stop notches. The rigid shell has two annular fasteners protruding from its outer wall. The two annular fasteners are located opposite each other at both ends of the rigid shell. The two annular fasteners are arranged around the outer wall of the rigid shell to form an annular placement groove. Each annular fastener has at least two through grooves. The extension direction of each through groove intersects with the extension direction of the annular placement groove. The first stop of the compressed air pipe is slidably disposed in the through groove of one of the annular fasteners. The second stop of the aeration pipe is slidably disposed in the through groove of the other annular fastener. The aeration pipe is rotatably connected to the rigid outer shell, and the compressed air pipe is also rotatably connected to the rigid outer shell; When each of the first stop members slides along the corresponding through groove to disengage from the through groove, the first stop member compresses the annular seal, the corresponding annular fixing member passes through the first stop notch, and the compressed air pipe rotates relative to the rigid housing so that the first stop member abuts against the side of the corresponding annular fixing member closer to the other annular fixing member; when the second stop member slides along the corresponding through groove to disengage from the through groove, the second stop member compresses the annular seal, the corresponding annular fixing member passes through the second stop notch, and the aeration pipe rotates relative to the rigid housing so that the second stop member abuts against the side of the corresponding annular fixing member closer to the other annular fixing member.

2. The lifting aerator according to claim 1, characterized in that, The annular seal extends in a wavy shape in the extension direction of any of the through grooves of any of the annular fasteners.

3. The lifting aerator according to claim 1, characterized in that, The rigid outer shell and the two annular fasteners are integrally formed.

4. The lifting aerator according to claim 1, characterized in that, The inner diameter of both the aeration pipe and the compressed air pipe is larger than the outer diameter of the annular fixing member; and / or, The extension direction of each of the through slots is perpendicular to the extension direction of the annular groove.

5. The lifting aerator according to claim 1, characterized in that, The first stop is a stainless steel first stop; and / or, The first stop and the compressed air pipe are integrally formed.

6. The lifting aerator according to claim 1, characterized in that, The second stop is a corundum microporous second stop; and / or, The second stop and the aeration pipe are integrally formed.

7. The lifting aerator according to claim 1, characterized in that, The number of the first stop members is three. All three first stop members are connected to the pipe wall of the compressed air pipe, and the three first stop members are arranged at intervals along the circumference of the compressed air pipe to form three first stop notches. The number of second stop members is three. All three second stop members are connected to the pipe wall of the aeration pipe, and the three second stop members are arranged at intervals along the circumference of the aeration pipe to form three second stop notches. Each of the annular fixing members has three through slots. The three first stop members of the compressed air pipe are slidably disposed in the three through slots of one of the annular fixing members, and the three second stop members of the aeration pipe are slidably disposed in the three through slots of the other annular fixing member.

8. The lifting aerator according to claim 1, characterized in that, The rigid outer casing is a stainless steel casing; and / or, The annular seal is a fluororubber ring, an EPDM rubber ring, a silicone rubber ring, or a fluorosilicone rubber ring; and / or, The aeration tube is a corundum microporous aeration tube.

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