Lifting type aerator

Abstract

The invention provides a lifting type aerator. The lifting type aerator comprises an annular sealing piece, a check valve, a compressed air pipe and an aeration pipe. The check valve comprises a check body and a rigid shell, an annular containing groove is formed in the outer wall of the rigid shell, the annular containing groove is formed in the circumferential direction of the rigid shell, the annular sealing piece is arranged in the annular containing groove, and at least part of the annular sealing piece protrudes out of the rigid shell. The aeration pipe is communicated with the compressed air pipe, the rigid shell is arranged at the communication position of the aeration pipe and the compressed air pipe, one part of the rigid shell is located in the compressed air pipe and detachably connected with the compressed air pipe, and the other part of the rigid shell is located in the aeration pipe and detachably connected with the aeration pipe. One part of the annular sealing element is clamped between the rigid shell and the compressed air pipe, and the other part of the annular sealing element is clamped between the rigid shell and the aeration pipe. According to the lifting type aerator, the assembly efficiency can be improved, and the assembly cost can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a lifting aerator. Background Art

[0002] In the sewage treatment process, the aerator mainly transfers oxygen in the air to the mixed liquid for the respiration of microorganisms in the activated sludge. At the same time, the mixed liquid is kept in a violent mixing state through stirring and mixing, ensuring full contact between the activated sludge, dissolved oxygen and organic matter, and preventing sludge deposition. It is an essential equipment for sewage aeration and oxygenation. Since the aerator is easily blocked or aged, it needs to be maintained within a certain period of time. In order to improve the maintenance convenience of the aerator, lift aerators are now more commonly used. For example, the utility model patent application with application number 201420094389.6 discloses a lift aerator, which better realizes the inspection and maintenance of the aerator under the operating conditions of the sewage treatment system. Protection effectively ensures the efficiency of sewage treatment, and is easy to control and clean, improving maintenance safety. However, for the corundum microporous aeration tube, when the compressed air supply is stopped, sewage will flow back to the aeration system pipeline, and even reach the air compressor, causing damage to the equipment. For example, in the utility model patent application with application number 201020240964.0, a check valve is added to the end of the corundum microporous aeration tube close to the aeration system pipeline to prevent the backflow of sewage; in another example, in the invention patent application with application number 201210067430.6, a check device is added to the end of the corundum microporous aeration tube close to the aeration system pipeline to prevent the backflow of sewage. However, the above-mentioned lifting aerator still has the following problems:

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

[0004] 2. The corundum microporous aeration tube and the aeration system pipeline need to be sealed;

[0005] Thus, in the assembly of the liftable aerator, a large amount of manpower and material resources are required, the assembly cost is high, and the assembly efficiency is low. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a lifting aerator which can improve assembly efficiency and reduce assembly cost.

[0007] The objective of the present invention is achieved through the following technical solutions:

[0008] A lifting aerator, used for lifting and connecting in the sedimentation tank, the lifting aerator comprises:

[0009] Ring seals;

[0010] A check valve, the check valve comprising a check body and a rigid shell, the check body being connected to the interior of the rigid shell, an annular receiving groove being provided on the outer wall of the rigid shell, the annular receiving groove being arranged around the circumference of the rigid shell, the annular seal being arranged in the annular receiving groove, and the annular seal at least partially protruding from the rigid shell;

[0011] Compressed air pipe;

[0012] An aeration pipe, wherein the aeration pipe is connected to the compressed air pipe, the rigid shell is arranged at the connection point between the aeration pipe and the compressed air pipe, and a part of the rigid shell is located in the compressed air pipe and is detachably connected to the compressed air pipe, and another part of the rigid shell is located in the aeration pipe and is detachably connected to the aeration pipe, a part of the annular seal is clamped between the rigid shell and the compressed air pipe, and another part of the annular seal is clamped between the rigid shell and the aeration pipe.

[0013] In one of the embodiments, at least two first stoppers are provided at the end of the compressed air pipe close to the aeration pipe, the two first stoppers are connected to the pipe wall of the compressed air pipe, and the two first stoppers are arranged at intervals along the circumference of the compressed air pipe to form two first stop gaps;

[0014] At least two second stoppers are provided at the end of the aeration pipe close to the compressed air pipe, the two second stoppers are connected to the pipe wall of the aeration pipe, and the two second stoppers are arranged at intervals along the circumference of the aeration pipe to form two second stop gaps;

[0015] The outer wall of the rigid shell is provided with two annular fixing members, the two annular fixing members are relatively located at two ends of the rigid shell, the two annular fixing members are arranged around the outer wall of the rigid shell to form the annular receiving groove, each of the annular fixing members is provided with at least two through grooves, the extension direction of each through groove intersects with the extension direction of the annular receiving groove, the two first stoppers of the compressed air pipe are slidably arranged at the two through grooves of one of the annular fixing members in a one-to-one correspondence, and the two second stoppers of the aeration pipe are slidably arranged at the two through grooves of the other annular fixing member in a one-to-one correspondence;

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

[0017] When each of the first stop members slides along the corresponding through groove until it is disengaged from the through groove, the first stop member squeezes the annular seal, the corresponding annular fixing member passes through the first stop gap, and the compressed air pipe rotates relative to the rigid shell so that the first stop member abuts against the side of the corresponding annular fixing member close to the other annular fixing member; when the second stop member slides along the corresponding through groove until it is disengaged from the through groove, the second stop member squeezes the annular seal, the corresponding annular fixing member passes through the second stop gap, and the aeration pipe rotates relative to the rigid shell so that the second stop member abuts against the side of the corresponding annular fixing member close to the other annular fixing member.

[0018] In one of the embodiments, the annular sealing member extends in a wave shape in an extension direction of any through groove of any annular fixing member.

[0019] In one embodiment, the rigid shell and the two annular fixing members are an integrally formed structure.

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

[0021] In one embodiment, the extending direction of each of the through grooves is perpendicular to the extending direction of the annular receiving groove.

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

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

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

[0025] In one embodiment, the second stopper and the aeration tube are integrally formed.

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

[0027] The number of the second stoppers is three, the three second stoppers are all connected to the tube wall of the aeration tube, and the three second stoppers are arranged at intervals along the circumference of the aeration tube to form three second stop gaps;

[0028] Each of the annular fixing members is provided with at least three through grooves, the three first stoppers of the compressed air pipe are slidably arranged in correspondence with each other at the three through grooves of one of the annular fixing members, and the three second stoppers of the aeration pipe are slidably arranged in correspondence with each other at the three through grooves of the other annular fixing member.

[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 is provided with an annular mounting groove on the outer wall of the rigid shell, the annular seal is arranged in the annular mounting groove, and the annular seal at least partially protrudes from the rigid shell, so that the annular seal realizes the sealing of the rigid shell, that is, the sealing of the check valve is realized by the annular seal in the rigid shell; further, the rigid shell is coordinated so that a part of the rigid shell is located in the compressed air pipe and is detachably connected to the compressed air pipe, and another part of the rigid shell is located in the aeration pipe and is detachably connected to the aeration pipe, a part of the annular seal is clamped between the rigid shell and the compressed air pipe, and another part of the annular seal is clamped between the rigid shell and the aeration pipe, so that the check valve is arranged at the connection between the aeration pipe and the compressed air pipe. That is, when a part of the rigid shell is assembled in the compressed air pipe, a part of the annular seal is sandwiched between the rigid shell and the compressed air pipe, that is, the end of the compressed air pipe is sealed by the annular seal, and when the other part of the rigid shell is assembled in the aeration pipe, the other part of the annular seal is sandwiched between the rigid shell and the aeration pipe, that is, the end of the aeration pipe is sealed by the annular seal. In this way, when the check valve is assembled with the compressed air pipe and the aeration pipe, the sealing of the check valve, the compressed air pipe and the aeration pipe is completed, which effectively reduces the sealing process, thereby better improving the assembly efficiency of the lift aerator and better reducing the assembly cost of the lift aerator. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 It is a structural schematic diagram of a lifting aerator according to one embodiment of the present invention;

[0037] Figure 2 for Figure 1 A cross-sectional view of the lift aerator shown;

[0038] Figure 3 for Figure 1 A partial enlarged view of the lift aerator at A shown;

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

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

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

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

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

[0044] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

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

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0047] The present application provides a lifting aerator, which is used for lifting and connecting in a sedimentation tank. The lifting 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 shell, the check body is connected to the inside of the rigid shell, an annular mounting groove is provided on the outer wall of the rigid shell, the annular mounting groove is arranged around the circumference of the rigid shell, the annular seal is arranged in the annular mounting groove, and the annular seal at least partially protrudes from the rigid shell. The aeration pipe is connected to the compressed air pipe, the rigid shell is arranged at the connection point between the aeration pipe and the compressed air pipe, and a part of the rigid shell is located in the compressed air pipe and is detachably connected to the compressed air pipe, and another part of the rigid shell is located in the aeration pipe and is detachably connected to the aeration pipe, a part of the annular seal is sandwiched between the rigid shell and the compressed air pipe, and another part of the annular seal is sandwiched between the rigid shell and the aeration pipe.

[0048] The above-mentioned lifting aerator is provided with an annular mounting groove on the outer wall of the rigid shell, the annular seal is arranged in the annular mounting groove, and the annular seal at least partially protrudes from the rigid shell, so that the annular seal realizes the sealing of the rigid shell, that is, the sealing of the check valve is realized by the annular seal in the rigid shell; further, a part of the rigid shell is located in the compressed air pipe and is detachably connected to the compressed air pipe, and another part of the rigid shell is located in the aeration pipe and is detachably connected to the aeration pipe, a part of the annular seal is clamped between the rigid shell and the compressed air pipe, and another part of the annular seal is clamped between the rigid shell and the aeration pipe, so that the check valve is arranged at the connection between the aeration pipe and the compressed air pipe. That is, when a part of the rigid shell is assembled in the compressed air pipe, a part of the annular seal is clamped between the rigid shell and the compressed air pipe, that is, the end of the compressed air pipe is sealed by the annular seal, and when the other part of the rigid shell is assembled in the aeration pipe, the other part of the annular seal is clamped between the rigid shell and the aeration pipe, that is, the end of the aeration pipe is sealed by the annular seal. In this way, when the check valve is assembled with the compressed air pipe and the aeration pipe, the sealing of the check valve, the compressed air pipe and the aeration pipe is completed, which effectively reduces the sealing process, thereby greatly improving the assembly efficiency of the lift aerator and greatly reducing the assembly cost of the lift aerator.

[0049] In order to better understand the lifting aerator of the present application, the lifting aerator of the present application is further explained as follows:

[0050] Please also read Figures 1 to 3 The lifting aerator 10 of one embodiment 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 shell 220. The check body 210 is connected to the inside of the rigid shell 220. An annular receiving groove 201 is provided on the outer wall of the rigid shell 220. The annular receiving groove 201 is arranged around the circumference of the rigid shell 220. The annular seal 100 is arranged in the annular receiving groove 201, and the annular seal 100 at least partially protrudes from the rigid shell 220. The aeration pipe 400 is connected to the compressed air pipe 300, the rigid shell 220 is arranged at the connection point between the aeration pipe 400 and the compressed air pipe 300, and a part of the rigid shell 220 is located in the compressed air pipe 300 and is detachably connected to the compressed air pipe 300, and another part of the rigid shell 220 is located in the aeration pipe 400 and is detachably connected to the aeration pipe 400, a part of the annular seal 100 is clamped between the rigid shell 220 and the compressed air pipe 300, and another part of the annular seal 100 is clamped between the rigid shell 220 and the aeration pipe 400.

[0051] The above-mentioned lifting aerator 10 is provided with an annular mounting groove 201 on the outer wall of the rigid shell 220, and the annular seal 100 is arranged in the annular mounting groove 201, and the annular seal 100 at least partially protrudes from the rigid shell 220, that is, the annular seal 100 realizes the sealing of the rigid shell 220, that is, the sealing of the check valve 200 is realized by the annular seal 100 in the rigid shell 220; further, a part of the rigid shell 220 is located in the compressed air pipe 300 and is detachably connected to the compressed air pipe 300, and another part of the rigid shell 220 is located in the aeration pipe 400 and is detachably connected to the aeration pipe 400, a part of the annular seal 100 is clamped between the rigid shell 220 and the compressed air pipe 300, and another part of the annular seal 100 is clamped between the rigid shell 220 and the aeration pipe 400, that is, the check valve 200 is arranged between the aeration pipe 400 and the compressed air At the connection of the air pipe 300, that is, when a part of the rigid shell 220 is assembled in the compressed air pipe 300, a part of the annular seal 100 is sandwiched between the rigid shell 220 and the compressed air pipe 300, that is, the end of the compressed air pipe 300 is sealed by the annular seal 100, and when the other part of the rigid shell 220 is assembled in the aeration pipe 400, the other part of the annular seal 100 is sandwiched between the rigid shell 220 and the aeration pipe 400, that is, the end of the aeration pipe 400 is sealed by the annular seal 100. In this way, when the check valve 200 is assembled with the compressed air pipe 300 and the aeration pipe 400, the sealing of the check valve 200, the air compression pipe and the aeration pipe 400 is completed, which effectively reduces the sealing process, thereby better improving the assembly efficiency of the lift aerator 10 and better reducing the assembly cost of the lift aerator 10.

[0052] It is understandable that the lifting aerator still has the following problems:

[0053] 1. The corundum microporous aeration tube 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 tube and the aeration system pipeline, the threaded connection is relatively tight, which makes the disassembly and installation convenience of the corundum microporous aeration tube relatively poor;

[0054] 2. The non-return valve or non-return device installed in the corundum microporous aeration tube is less convenient to disassemble and install, and it is difficult to disassemble it quickly to use it in other corundum microporous aeration tubes during the repair of the corundum microporous aeration tube.

[0055] It is mentioned above that both the aeration pipe and the compressed air pipe are detachably connected to the check valve. Although it is better to avoid the problem of low assembly efficiency due to the need to gradually seal the movable end of the aeration pipe, the end of the compressed air pipe and the check valve, the connection between the aeration pipe and the compressed air pipe requires a higher connection strength to ensure the connection stability of the aeration pipe and the compressed air pipe due to the high internal pressure after the compressed air is introduced. Generally, the connection is made through a double external threaded joint. In order to ensure the connection strength, the double external threaded joint has a higher tightness when it is screwed to the aeration pipe and the compressed air pipe, which forces the screwing process of the double external threaded joint to take a lot of effort and time, and even requires the use of tools. The maintenance frequency of the corundum microporous aeration pipe is high, and it is necessary to improve the convenience of disassembly and installation of the corundum microporous aeration pipe.

[0056] Generally, the check valve is built into the aeration pipe, so the check valve needs to be sealed and connected to the pipe wall of the aeration pipe, and then the aeration pipe is sealed and connected to the compressed air pipe. The check valve is sealed and connected to the aeration pipe. In order to ensure the sealing effect of the connection between the check valve and the aeration pipe, combined with the small inner diameter of the aeration pipe, it takes effort and time to assemble the check valve to the aeration pipe, and even requires the use of tools. The check valve often requires the use of springs, which forces the maintenance frequency of the check valve to be high. Therefore, it is necessary to improve the convenience of disassembly and installation of the check valve;

[0057] In this application, in order to realize the rapid disassembly of the corundum microporous aeration tube and the rapid disassembly of the check valve, the following design is made:

[0058] Please also read Figures 3 to 6In one embodiment, at least two first stoppers 500 are provided at the end of the compressed air pipe 300 close to the aeration pipe 400, and the two first stoppers 500 are connected to the pipe wall of the compressed air pipe 300, and the two first stoppers 500 are arranged at intervals along the circumference of the compressed air pipe 300 to form two first stop gaps 501. Further, at least two second stoppers 600 are provided at the end of the aeration pipe 400 close to the compressed air pipe 300, and the two second stoppers 600 are connected to the pipe wall of the aeration pipe 400, and the two second stoppers 600 are arranged at intervals along the circumference of the aeration pipe 400 to form two second stop gaps 601. Further, two annular fixing members 230 are convexly provided on the outer wall of the rigid shell 220, and the two annular fixing members 230 are relatively located at the two ends of the rigid shell 220, and the two annular fixing members 230 are arranged around the outer wall of the rigid shell 220 to form an annular receiving groove 201, and each annular fixing member 230 is provided with at least two through grooves 202, and the extension direction of each through groove 202 intersects with the extension direction of the annular receiving groove 201, and the two first stoppers 500 of the compressed air pipe 300 are slidably provided at the two through grooves 202 of one of the annular fixing members 230, and the two second stoppers 600 of the aeration pipe 400 are slidably provided at the two through grooves 202 of the other annular fixing member 230. Further, the aeration pipe 400 is rotatably connected to the rigid shell 220, and the compressed air pipe 300 is rotatably connected to the rigid shell 220. Further, when each first stopper 500 slides along the corresponding through groove 202 to be separated from the through groove 202, the first stopper 500 squeezes 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 stopper 500 abuts against the side of the corresponding annular fixing member 230 close to the other annular fixing member 230; when the second stopper 600 slides along the corresponding through groove 202 to be separated from the through groove 202, the second stopper 600 squeezes 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 stopper 600 abuts against the side of the corresponding annular fixing member 230 close to the other annular fixing member 230.

[0059] First, the two first stoppers 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 gaps 501, and each annular fixing member 230 is provided with at least two through grooves 202, and the extension direction of each through groove 202 intersects with the extension direction of the annular mounting groove 201, so that when the compressed air pipe 300 drives the first stopper 500 to slide into the rigid housing 220, the annular fixing member 230 is in contact with the compressed air pipe 300 through the corresponding first stop gaps 501. 0 avoidance setting, and the first stopper 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 stopper 500 to rotate relative to the rigid housing 220, it is more convenient to realize that the first stopper 500 abuts against the side of the corresponding annular fixing member 230 close to the other annular fixing member 230, that is, it is more convenient to realize the assembly of the compressed air pipe 300 on the rigid housing 220, and the convenience of assembly and disassembly of the check valve 200 and the compressed air pipe 300 is better improved;

[0060] Secondly, the two second stoppers 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, and each annular fixing member 230 is provided with at least two through grooves 202, and the extension direction of each through groove 202 intersects with the extension direction of the annular mounting groove 201, so that when the aeration pipe 400 drives the second stopper 600 to slide into the rigid housing 220, the annular fixing member 230 is in contact with the aeration pipe 400 through the corresponding second stop notches 601. The second stopper 600 is allowed to slide further into the rigid housing 220 along the through groove 202, so that when the aeration pipe 400 drives the second stopper 600 to rotate relative to the rigid housing 220, the second stopper 600 is more conveniently abutted against the side of the corresponding annular fixing member 230 close to the other annular fixing member 230, that is, the aeration pipe 400 is more conveniently assembled on the rigid housing 220, and the convenience of assembly and disassembly of the check valve 200 and the aeration pipe 400 is better improved;

[0061] Next, when each first stopper 500 slides along the corresponding through groove 202 until it is out of the through groove 202, the first stopper 500 squeezes the annular seal 100, and when the second stopper 600 slides along the corresponding through groove 202 until it is out of the through groove 202, the second stopper 600 squeezes the annular seal 100, so that the annular seal 100 gives the first stopper 500 a force to resist the corresponding annular fixing member 230, and the annular seal 100 gives the second stopper 600 a force to resist the corresponding annular fixing member 230, thereby better ensuring the connection strength of the aeration pipe 400 and the compressed air pipe 300 with the check valve 200 respectively, thereby better ensuring the stability of the check valve 200 connected to the aeration pipe 400 and the compressed air pipe 300 respectively, thereby better ensuring the structural stability of the lifting aerator 10;

[0062] In summary, the convenience of assembly and disassembly of the check valve 200 and the aeration pipe 400 is improved, and the convenience of assembly and disassembly of the check valve 200 and the aeration pipe 400 is improved, that is, on the basis of better ensuring the structural stability of the lift aerator 10, the quick disassembly and quick assembly of the check valve 200 and the aeration pipe 400 are better realized, and the convenience of use of the lift aerator 10 is better improved.

[0063] It should be noted that the check valve 200 is partially located in the aeration pipe 400 and the other part is located in the compressed air pipe 300. In fact, 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, which preliminarily realizes the improvement of the convenience of assembling and disassembling the check valve 200.

[0064] It should also be noted that when the rigid shell 220 is respectively connected to the aeration pipe 400 and the compressed air pipe 300, the annular seal 100 is clamped between the first stopper 500 and the second stopper 600, that is, the annular seal 100 is squeezed to a compressed state by the first stopper 500 and the second stopper 600, so that the annular seal 100 is closely abutted against the first stopper 500 and the second stopper 600; at the same time, the annular seal 100 is also clamped between the aeration pipe 400 and the rigid shell 220, and the annular seal 100 is also clamped between the compressed air pipe 300 and the rigid shell 220, which effectively realizes the double sealing of the end of the aeration pipe 400 and the end of the compressed air pipe 300, and further improves 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 first stopper is arranged close to the outer wall of the rigid shell on a side away from the air aeration pipe, which better ensures the stopping effect of the first stopper and the annular fixing member.

[0066] Furthermore, when the rigid shell is connected to the aeration pipe, the second stopper is arranged on a side away from the aeration pipe and adjacent to the outer wall of the rigid shell, which better ensures the stopping effect of the second stopper and the fixing member.

[0067] Further, when the rigid shell is connected to the compressed air pipe, a first clamping member is convexly provided on one side of the first stopper close to the corresponding annular fixing member. Further, a first clamping groove is provided on one side of the annular fixing member close to the corresponding first stopper, and the first clamping member is clamped at the first clamping groove. It can be understood that after pushing the compressed air pipe to slide into the rigid shell and squeezing the annular seal, the compressed air pipe is synchronously rotated to rotate the compressed air pipe relative to the rigid shell, so that the first clamping member can be better clamped at the first clamping groove, and under the action of the annular seal, the clamping stability of the first clamping member at the first clamping groove is better, further improving the connection stability of the compressed air pipe and the check valve; similarly, after pushing the compressed air pipe to slide into the rigid shell and squeezing the annular seal, the compressed air pipe is synchronously rotated to rotate the compressed air pipe relative to the rigid shell, so that the first clamping member can be better separated from the first clamping groove, thereby better ensuring the convenience 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 clamping piece is convexly provided on one side of the second stopper close to the corresponding annular fixing piece. Furthermore, a second clamping groove is provided on one side of the annular fixing piece close to the corresponding second stopper, and the second clamping piece is clamped at the second clamping groove. It can be understood that after the aeration pipe is pushed to slide into the rigid shell and the annular seal is squeezed, the aeration pipe is synchronously rotated to rotate the aeration pipe relative to the rigid shell, so that the second clamping piece can be better clamped at the second clamping groove, and under the action of the annular seal, the clamping stability of the second clamping piece at the second clamping groove is better, further improving the connection stability of the aeration pipe and the check valve; similarly, after the aeration pipe is pushed to slide into the rigid shell and the annular seal is squeezed, the aeration pipe is synchronously rotated to rotate the aeration pipe relative to the rigid shell, so that the second clamping piece can be better separated from the second clamping groove, thereby better ensuring the convenience of installation and disassembly of the aeration pipe and the check valve.

[0069] Further, the rigid shell is an annular shell, and the outer diameter of the rigid shell is less than or equal to 4 / 5 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid shell is greater than or equal to 1 / 5 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid shell is equal to 2 / 3 of the inner diameter of the aeration pipe. Further, the outer diameter of the rigid 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 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 shell is equal to 2 / 3 of the inner diameter of the compressed air pipe, which better ensures the stability of the aeration pipe and the compressed air pipe respectively connected to the check valve on the basis of ensuring sufficient air circulation.

[0070] Please also read Figures 4 to 7 In one embodiment, the number of the first stoppers 500 is three, and the three first stoppers 500 are all connected to the pipe wall of the compressed air pipe 300, and the three first stoppers 500 are arranged at intervals along the circumference of the compressed air pipe 300 to form three first stop gaps 501. Further, the number of the second stoppers 600 is three, and the three second stoppers 600 are all connected to the pipe wall of the aeration pipe 400, and the three second stoppers 600 are arranged at intervals along the circumference of the aeration pipe 400 to form three second stop gaps 601. Furthermore, each annular fixing member 230 is provided with at least three through grooves 202, and the three first stop members 500 of the compressed air pipe 300 are slidably disposed one by one at the three through grooves 202 of one annular fixing member 230, and the three second stop members 600 of the aeration pipe 400 are slidably disposed one by one at the three through grooves 202 of the other annular fixing member 230, further ensuring the stability of the aeration pipe 400 and the compressed air pipe 300 respectively connected to the check valve 200.

[0071] Please also read Figure 3 , Figure 6 and Figure 8In one embodiment, the annular seal 100 extends in a wavy shape in the extending direction of any through groove 202 of any annular fixing member 230. It can be understood that the annular seal 100 extends in a wavy shape. When the annular seal 100 is sleeved on the outer wall of the rigid shell 220, the annular seal 100 is in an expanded and elongated state with a wavy pattern, so that when the aeration pipe 400 and the air compression pipe are connected to the rigid shell 220, the pipe wall of the aeration pipe 400 and the pipe wall of the compressed air pipe 300 both have weak interference with the annular seal 100. Combined with the wavy pattern of the annular seal 100, it has good elasticity, so that the annular seal 100 can be at the first stop. When the force applied by the first stopper 500 and the second stopper 600 is small, the ring seal 100 contracts, which is conducive to the ring seal 100 being squeezed into a compressed state by the first stopper 500 and the second stopper 600. At this time, the ring seal 100 contracts in a wave pattern, and the width of the ring seal 100 increases, so that the interference between the ring seal 100 and the pipe wall of the aeration pipe 400 and the pipe wall of the compressed air pipe 300 is enhanced, thereby 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 housing and the two annular fixing members are an integrally formed structure.

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

[0074] Please also read Figure 6 to Figure 7 In one embodiment, the extending direction of each through groove 202 is perpendicular to the extending direction of the annular receiving groove 201 .

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

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

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

[0078] In one embodiment, the second stopper 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 sealing member 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. Furthermore, the rigid shell is a valve body, and the check body includes a block, a spring, a valve disc, a vertical rod and other structures for realizing the check function. The butterfly check valve is a conventional check valve in the art. This application is only intended to protect the material and structure of the rigid shell, so the structure of the check body, and the connection and positional relationship between the check body and the rigid shell are not 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 is provided with an annular receiving groove 201 on the outer wall of the rigid shell 220, and the annular seal 100 is arranged in the annular receiving groove 201, and the annular seal 100 at least partially protrudes from the rigid shell 220, that is, the annular seal 100 realizes the sealing of the rigid shell 220, that is, the sealing of the check valve 200 is realized by the annular seal 100 in the rigid shell 220; further, a part of the rigid shell 220 is located in the compressed air pipe 300 and is detachably connected to the compressed air pipe 300, and another part of the rigid shell 220 is located in the aeration pipe 400 and is detachably connected to the aeration pipe 400, a part of the annular seal 100 is clamped between the rigid shell 220 and the compressed air pipe 300, and another part of the annular seal 100 is clamped between the rigid shell 220 and the aeration pipe 400, that is, the check valve 200 is arranged between the aeration pipe 400 and the compressed air At the connection of the air pipe 300, that is, when a part of the rigid shell 220 is assembled in the compressed air pipe 300, a part of the annular seal 100 is sandwiched between the rigid shell 220 and the compressed air pipe 300, that is, the end of the compressed air pipe 300 is sealed by the annular seal 100, and when the other part of the rigid shell 220 is assembled in the aeration pipe 400, the other part of the annular seal 100 is sandwiched between the rigid shell 220 and the aeration pipe 400, that is, the end of the aeration pipe 400 is sealed by the annular seal 100. In this way, when the check valve 200 is assembled with the compressed air pipe 300 and the aeration pipe 400, the sealing of the check valve 200, the air compression pipe and the aeration pipe 400 is completed, which effectively reduces the sealing process, thereby better improving the assembly efficiency of the lift aerator 10 and better reducing the assembly cost of the lift aerator 10.

[0085] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A lifting aerator, used for lifting and connecting in the sedimentation tank, characterized in that: The lifting aerator comprises: Ring seals; A check valve, the check valve comprising a check body and a rigid shell, the check body being connected to the interior of the rigid shell, an annular receiving groove being provided on the outer wall of the rigid shell, the annular receiving groove being arranged around the circumference of the rigid shell, the annular seal being arranged in the annular receiving groove, and the annular seal at least partially protruding from the rigid shell; Compressed air pipe; An aeration pipe, wherein the aeration pipe is connected to the compressed air pipe, the rigid shell is arranged at the connection point between the aeration pipe and the compressed air pipe, and a part of the rigid shell is located in the compressed air pipe and is detachably connected to the compressed air pipe, and another part of the rigid shell is located in the aeration pipe and is detachably connected to the aeration pipe, a part of the annular seal is clamped between the rigid shell and the compressed air pipe, and another part of the annular seal is clamped between the rigid shell and the aeration pipe.

2. The lifting aerator according to claim 1, characterized in that: At least two first stoppers are provided at the end of the compressed air pipe close to the aeration pipe, the two first stoppers are connected to the pipe wall of the compressed air pipe, and the two first stoppers are arranged at intervals along the circumference of the compressed air pipe to form two first stop gaps; At least two second stoppers are provided at the end of the aeration pipe close to the compressed air pipe, the two second stoppers are connected to the pipe wall of the aeration pipe, and the two second stoppers are arranged at intervals along the circumference of the aeration pipe to form two second stop gaps; The outer wall of the rigid shell is provided with two annular fixing members, the two annular fixing members are relatively located at two ends of the rigid shell, the two annular fixing members are arranged around the outer wall of the rigid shell to form the annular receiving groove, each of the annular fixing members is provided with at least two through grooves, the extension direction of each through groove intersects with the extension direction of the annular receiving groove, the two first stoppers of the compressed air pipe are slidably arranged at the two through grooves of one of the annular fixing members in a one-to-one correspondence, and the two second stoppers of the aeration pipe are slidably arranged at the two through grooves of the other annular fixing member in a one-to-one correspondence; The aeration pipe is rotatably connected to the rigid shell, and the compressed air pipe is rotatably connected to the rigid shell; When each of the first stop members slides along the corresponding through groove until it is disengaged from the through groove, the first stop member squeezes the annular seal, the corresponding annular fixing member passes through the first stop gap, and the compressed air pipe rotates relative to the rigid shell so that the first stop member abuts against the side of the corresponding annular fixing member close to the other annular fixing member; when the second stop member slides along the corresponding through groove until it is disengaged from the through groove, the second stop member squeezes the annular seal, the corresponding annular fixing member passes through the second stop gap, and the aeration pipe rotates relative to the rigid shell so that the second stop member abuts against the side of the corresponding annular fixing member close to the other annular fixing member.

3. The lifting aerator according to claim 2, characterized in that: The annular sealing member extends in a wave shape in an extending direction of any through groove of any annular fixing member.

4. The lifting aerator according to claim 2, characterized in that: The rigid shell and the two annular fixing members are an integrally formed structure.

5. The lifting aerator according to claim 2, characterized in that: The inner diameter of the aeration pipe and the inner diameter of the compressed air pipe are both larger than the outer diameter of the annular fixing member; and / or, The extending direction of each through groove is perpendicular to the extending direction of the annular receiving groove.

6. The lifting aerator according to claim 2, characterized in that: The first stopper is a stainless steel first stopper; and / or, The first stopper and the compressed air pipe are integrally formed.

7. The lifting aerator according to claim 2, characterized in that: The second stopper is a corundum microporous second stopper; and / or, The second stopper and the aeration pipe are an integrally formed structure.

8. The lifting aerator according to claim 2, characterized in that: The number of the first stoppers is three, the three first stoppers are all connected to the pipe wall of the compressed air pipe, and the three first stoppers are arranged at intervals along the circumference of the compressed air pipe to form three first stop gaps; The number of the second stoppers is three, the three second stoppers are all connected to the tube wall of the aeration tube, and the three second stoppers are arranged at intervals along the circumference of the aeration tube to form three second stop gaps; Each of the annular fixing members is provided with at least three through grooves, the three first stoppers of the compressed air pipe are slidably arranged in correspondence with each other at the three through grooves of one of the annular fixing members, and the three second stoppers of the aeration pipe are slidably arranged in correspondence with each other at the three through grooves of the other annular fixing member.

9. The lifting aerator according to claim 1, characterized in that: The rigid housing is a stainless steel housing; and / or, The annular sealing member 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.

10. The lifting aerator according to claim 1, characterized in that: The check valve is a butterfly check valve.

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