Oxygenation device for aerobic digestion treatment of sewage

Abstract

The utility model discloses an oxygenating device for aerobic digestion treatment of sewage, and belongs to the technical field of sewage treatment. A mounting base of the oxygenating device comprises an arc-shaped supporting plate and a plug-in air pipe, the arc-shaped inner wall of the arc-shaped supporting plate is matched with an air distribution pipeline, the plug-in air pipe comprises a threaded connection section and a plug-in connection section, the threaded connection section is in threaded connection with a disc type aerator main body, and the plug-in connection section is matched with air distribution holes of the air distribution pipeline; an annular guide boss is arranged on the outer wall of the main body of the inserting connection section, and the outer diameter of the annular guide boss is gradually increased in the direction close to the arc-shaped inner wall; the outer wall of the main body of the inserting connection section is sleeved with a sealing ring, the sealing ring abuts against the end face of the end, close to the arc-shaped inner wall, of the annular guide boss, the outer diameter of the sealing ring is smaller than that of the end of the annular guide boss, and the distance between the sealing ring and the arc-shaped inner wall is matched with the thickness of the pipe wall of the gas distribution pipeline. According to the oxygenating device, the sealing ring can be prevented from falling off, and the air tightness of connection between the base and the air distribution pipeline can be better guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to an oxygenating device for aerobic digestion treatment of sewage. Background Art

[0002] Aerobic elimination is an effective method in wastewater treatment. Aeration of wastewater using an oxygenator is a common procedure in aerobic elimination. Aeration provides sufficient dissolved oxygen in the wastewater, enabling better aerobic elimination. Among various oxygenation devices, disc-type microporous aerators are widely used due to their low energy consumption, large gas-liquid interface, and uniform bubble diffusion.

[0003] In some existing solutions, the disc diffuser body is connected to the air distribution pipe via a connection base with a threaded connector. One end of the connector is threaded into the disc diffuser body, while the other end of the connector is fitted with a rubber ring and then connected to the air distribution pipe. During installation, the rubber ring may fall off the connector, causing air leakage at the connection between the connector and the air distribution pipe. Utility Model Content

[0004] The purpose of this application is to provide an oxygenating device for aerobic digestion treatment of sewage, which can prevent the sealing ring from falling off and better ensure the airtightness of the connection between the base and the air distribution pipeline.

[0005] The embodiment of the present application is implemented as follows:

[0006] The embodiment of the present application provides an oxygenating device for aerobic digestion treatment of sewage, comprising a disc aerator body and a mounting base;

[0007] The mounting base includes an arc-shaped support plate and a plug-in ventilation pipe. The arc-shaped inner wall of the arc-shaped support plate matches the air distribution pipe. The plug-in ventilation pipe is arranged in the middle of the mounting base along the radial direction of the arc-shaped support plate. The plug-in ventilation pipe includes a threaded connection section and a plug-in connection section that are interconnected. The threaded connection section is located on the outer side of the arc-shaped support plate. The threaded connection section is threadedly connected to the ventilation joint of the disc aerator body. The plug-in connection section is located on the inner side of the arc-shaped support plate. The body of the plug-in connection section matches the air distribution hole of the air distribution pipe.

[0008] An annular guide boss is provided on a section of the outer wall of the main body of the plug-in connection section. The outer diameter of the annular guide boss at one end away from the arc-shaped inner wall is the same as the outer diameter of the main body of the plug-in connection section. The outer diameter of the annular guide boss gradually increases from the end away from the arc-shaped inner wall to the end close to the arc-shaped inner wall.

[0009] The outer wall of the main body of the plug-in connection section is also provided with a sealing ring, which is held against the end face of the annular guide boss close to the arc-shaped inner wall. The outer diameter of the sealing ring is smaller than the outer diameter of the annular guide boss close to the arc-shaped inner wall. The distance between the sealing ring and the arc-shaped inner wall matches the thickness of the pipe wall of the air distribution pipe, so that the sealing ring and the arc-shaped inner wall can cooperate to clamp the pipe wall of the air distribution pipe.

[0010] In some embodiments, an end surface of the annular guide boss close to one end of the arc-shaped inner wall is provided with an accommodating groove, and a portion of the sealing ring is embedded in the accommodating groove.

[0011] In some embodiments, in the end face of the annular guide boss close to the arc-shaped inner wall, the accommodating groove is located at one end of the outer wall of the main body of the plug-in connection section; a section of the outer wall of the main body of the plug-in connection section is also provided with an anti-slip boss, which is located on the side of the accommodating groove close to the arc-shaped inner wall, and the anti-slip boss is in contact with the sealing ring.

[0012] In some embodiments, in the axial direction of the plug-in ventilation tube, the annular guide boss is located in the middle portion of the main body of the plug-in connection section.

[0013] In some embodiments, in the axial direction of the plug-in ventilation pipe, the distance from the annular guide boss to the end of the main body of the plug-in connection section away from the arc-shaped inner wall is a first specified distance, and the first specified distance is greater than the wall thickness of the air distribution pipe.

[0014] In some embodiments, a sealing sleeve is embedded in the end face of the annular guide boss near one end of the arc-shaped inner wall. The sealing sleeve is located on the outside of the sealing ring and is spaced apart from the sealing ring. The distance between the sealing sleeve and the arc-shaped inner wall is less than the thickness of the wall of the air distribution duct, so that the sealing sleeve cooperates with the arc-shaped inner wall in a curved form to clamp the wall of the air distribution duct.

[0015] In some embodiments, the distance from one end of the sealing sleeve close to the arc-shaped inner wall to the outer wall of the main body of the plug-in connection section is a second specified distance, and the distance from one end of the sealing sleeve away from the arc-shaped inner wall to the outer wall of the main body of the plug-in connection section is a third specified distance, and the second specified distance is less than or equal to the third specified distance.

[0016] In some embodiments, the sealing sleeve extends axially along the plug-in ventilation tube, and the second designated distance is equal to the third designated distance.

[0017] In some embodiments, the mounting base is composed of a curved support plate and a plug-in vent tube.

[0018] In some embodiments, the arc-shaped support plate is provided with positioning sliders at both ends in the circumferential direction; the mounting base also includes an arc-shaped engaging plate, which is used to slidably cooperate with the air distribution duct along the axial direction, and the arc-shaped engaging plate cooperates with the arc-shaped support plate to engage the air distribution duct, and the arc-shaped engaging plate is provided with positioning sleeves at both ends in the circumferential direction, and the positioning sleeves are used to slidably sleeve on the outside of the positioning slider along the axial direction of the arc-shaped engaging plate.

[0019] The oxygenation device for aerobic digestion treatment of sewage provided in the embodiments of the present application has the following beneficial effects:

[0020] In this application, an annular guide boss is provided on the outer wall of the main body of the plug-in connection section, and the inner diameter of the annular guide boss gradually increases in the direction approaching the arc-shaped inner wall of the arc-shaped support plate, so as to facilitate plug-in cooperation with the air distribution hole of the air distribution pipe.

[0021] The sealing ring is arranged on the side of the annular guide boss close to the arc inner wall. The annular guide boss has an anti-drop limit function for the sealing ring, which can prevent the sealing ring from falling off and better ensure the airtightness of the connection between the installation base and the air distribution pipe.

[0022] The distance between the sealing ring and the curved inner wall matches the thickness of the air distribution duct wall. After the air distribution hole passes through the annular guide boss, the sealing ring and the curved inner wall cooperate to clamp the air distribution duct wall, thus achieving a sealed connection. In this sealed state, since the air distribution duct wall is clamped between the sealing ring and the curved inner wall, the air distribution duct wall can be well aligned with the curved inner wall, thereby balancing the force between the curved support plate and the air distribution duct wall, which is beneficial to improving the working stability and service life of the curved support plate.

[0023] Based on this, the sealing ring is held against the end face of the annular guide boss, and the outer diameter of the sealing ring is made smaller than the outer diameter of the annular guide boss. After the air distribution hole passes through the annular guide boss, the annular guide boss can protect the sealing ring to avoid friction damage between the hole wall of the air distribution hole and the sealing ring, and at the same time avoid the hole wall of the air distribution hole driving the sealing ring to shift and affect the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of a local working state of an existing disc-type microporous aerator;

[0026] Figure 2 for Figure 1 A partial enlarged view of position II in the middle;

[0027] Figure 3 A schematic structural diagram of an oxygenation device for aerobic digestion treatment of sewage provided in an embodiment of the present application;

[0028] Figure 4 A schematic structural diagram of a mounting base provided in an embodiment of the present application at a viewing angle;

[0029] Figure 5 for Figure 4 A partial enlarged view of the middle V;

[0030] Figure 6 A schematic structural diagram of a mounting base provided in an embodiment of the present application from another perspective;

[0031] Figure 7 A schematic diagram of a working state of a mounting base and an air distribution duct provided in an embodiment of the present application;

[0032] Figure 8 for Figure 7 A partial enlarged view of position VIII in the middle;

[0033] Figure 9 A schematic diagram of the working status of another mounting base and air distribution duct provided in an embodiment of the present application.

[0034] icon:

[0035] 100-Oxygenation device for aerobic digestion treatment of sewage;

[0036] 110-disc aerator body; 111-aeration disc; 112-vent connector;

[0037] 120 - Mounting base; 121 - Arc-shaped support plate; 1211 - Arc-shaped inner wall; 1212 - Positioning slide; 122 - Plug-in vent pipe; 1221 - Threaded connection section; 1222 - Plug-in connection section; 12221 - Annular guide boss; 12222 - Sealing ring; 12223 - Anti-slip boss; 12224 - Sealing sleeve; 123 - Arc-shaped clamping plate; 1231 - Positioning sleeve;

[0038] 200-connection base; 210-thread connector; 220-arc plate; 230-rubber ring;

[0039] 300-Gas distribution duct. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0042] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of this application, it should be noted that the terms "center", "up", "down", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0044] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0045] Furthermore, the terms “vertical”, “parallel”, etc. do not mean that the components are required to be absolutely vertical or parallel, but may be slightly tilted.

[0046] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] See also Figure 1 and Figure 2In some prior arts, the main body of the disc-type microporous aerator is connected to the air distribution pipe 300 through a connecting base 200 with a threaded joint 210. The threaded joint 210 is located at one end outside the arc-shaped plate 220 of the connecting base 200 and is used for threaded connection with the main body of the disc-type microporous aerator. The threaded joint 210 is located at one end inside the arc-shaped plate 220 of the connecting base 200 and is connected to the air distribution pipe 300 after being sleeved with a rubber ring 230.

[0048] Research has found that in this design, the rubber ring 230 may fall off from the threaded connector 210 during installation, causing air leakage at the connection between the threaded connector 210 and the air distribution duct 300. Figure 2 Based on the sealing state of this design, the rubber ring 230 is clamped between the curved plate 220 and the wall of the air distribution duct 300, so that there is a gap between the curved plate 220 and the wall of the air distribution duct 300 and they cannot fit well. The force between the curved plate 220 and the wall of the air distribution duct 300 is concentrated, and deformation is likely to occur, which affects the working stability and service life.

[0049] In order to effectively improve the above-mentioned problems, the technical solution of the present application is proposed, and the technical solution of the present application will be exemplarily described below through some embodiments.

[0050] See also Figure 3 The present invention provides an oxygenation device 100 for aerobic digestion of sewage, comprising a disc aerator body 110 and a mounting base 120. The disc aerator body 110 may be conventionally designed, with an aeration disc 111 disposed on the top and a vent connector 112 disposed on the bottom, connected to the aeration disc 111.

[0051] See also Figures 4 to 8 The mounting base 120 includes a curved support plate 121 and a plug-in ventilation tube 122. The curved inner wall 1211 of the curved support plate 121 matches the air distribution duct 300 so that the curved inner wall 1211 can fit the outer wall of the air distribution duct 300; the central angle corresponding to the curved inner wall 1211 is illustratively ≤180°.

[0052] See also Figures 4 to 6The plug-in ventilation pipe 122 is arranged in the middle of the mounting base 120 along the radial direction of the arc-shaped support plate 121, that is, in the middle area of ​​the mounting base 120, the plug-in ventilation pipe 122 penetrates the mounting base 120 along the plate thickness direction of the arc-shaped support plate 121. The plug-in ventilation pipe 122 includes a threaded connection section 1221 and a plug-in connection section 1222 that are interconnected. The threaded connection section 1221 is located on the outer side of the arc-shaped support plate 121, and the outer side is relative to the circular area corresponding to the arc-shaped support plate 121. The outer side is the side away from the air distribution pipe 300 in the working state. The threaded connection section 1221 is threadedly connected to the ventilation joint 112 of the disc aerator body 110; the plug-in connection section 1222 is located on the inner side of the arc-shaped support plate 121, and the inner side is also relative to the circular area corresponding to the arc-shaped support plate 121. The inner side is the side close to the air distribution pipe 300 in the working state. The main body of the plug-in connection section 1222 matches the air distribution hole of the air distribution pipe 300, so that the main body of the plug-in connection section 1222 can be slidably matched with the air distribution hole of the air distribution pipe 300.

[0053] Among them, a section of the outer wall of the main body of the plug-in connection section 1222 is provided with an annular guide boss 12221, which can be located in the middle area of ​​the main body of the plug-in connection section 1222, or at the end of the main body of the plug-in connection section 1222 away from the arc-shaped inner wall 1211.

[0054] The outer diameter of the end of the annular guide boss 12221 away from the arcuate inner wall 1211 is the same as the outer diameter of the main body of the plug-in connection section 1222. The outer diameter of the annular guide boss 12221 gradually increases from the end away from the arcuate inner wall 1211 to the end closer to the arcuate inner wall 1211. It is understood that the sidewall of the annular guide boss 12221 can be an inclined plane or an inclined arcuate surface, and is exemplarily an inclined plane.

[0055] The outer wall of the main body of the plug-in connection section 1222 is also covered with a sealing ring 12222, exemplarily made of rubber. The sealing ring 12222 abuts against the end surface of the annular guide boss 12221 near the arcuate inner wall 1211. The outer diameter of the sealing ring 12222 is smaller than the outer diameter of the end of the annular guide boss 12221 near the arcuate inner wall 1211. In other words, in the radial direction of the main body of the plug-in connection section 1222, the end of the annular guide boss 12221 near the arcuate inner wall 1211 protrudes beyond the sealing ring 12222.

[0056] The distance between the sealing ring 12222 and the curved inner wall 1211 matches the wall thickness of the gas distribution duct 300. In other words, the distance between the sealing ring 12222 and the curved inner wall 1211 is less than or equal to the wall thickness of the gas distribution duct 300, so that the sealing ring 12222 and the curved inner wall 1211 can cooperate to clamp the wall of the gas distribution duct 300. For example, the distance between the sealing ring 12222 and the curved inner wall 1211 is slightly less than the wall thickness of the gas distribution duct 300, which facilitates the sealing ring 12222 and the curved inner wall 1211 to cooperate to more tightly clamp the wall of the gas distribution duct 300.

[0057] The oxygenation device 100 for aerobic digestion treatment of sewage provided in the embodiment of the present application has the following working principle:

[0058] First, connect the mounting base 120 to the air distribution pipe 300 via the plug-in connection section 1222, and then thread the vent connector 112 of the disc aerator body 110 to the threaded connection section 1221 of the mounting base 120. When connecting the mounting base 120 to the air distribution pipe 300, first insert the end of the plug-in connection section 1222 away from the arc-shaped inner wall 1211 into the air distribution hole of the air distribution pipe 300. When the air distribution hole moves to the annular guide boss 12221, the air distribution hole slides over the annular guide boss 12221 under the guidance of the annular guide boss 12221 until the air distribution hole passes the annular guide boss 12221. At this time, see Figure 7-Figure 8 The air distribution hole is sleeved on one end of the main body of the plug-in connection section 1222 close to the arc-shaped inner wall 1211, and the inner wall of the air distribution duct 300 is clamped between the arc-shaped inner wall 1211 and the sealing ring 12222.

[0059] Based on the above working principle, the oxygenation device 100 for aerobic digestion treatment of sewage provided in the embodiment of the present application has the following beneficial effects:

[0060] An annular guide boss 12221 is provided on the outer wall of the main body of the plug-in connection section 1222. The inner diameter of the annular guide boss 12221 gradually increases as it approaches the curved inner wall 1211 of the curved support plate 121, facilitating plug-in engagement with the air distribution holes of the air distribution duct 300. A sealing ring 12222 is positioned on the side of the annular guide boss 12221 near the curved inner wall 1211. This annular guide boss 12221 acts as a retaining stop for the sealing ring 12222, preventing it from falling off and ensuring an airtight connection between the mounting base 120 and the air distribution duct 300. The distance between sealing ring 12222 and curved inner wall 1211 matches the wall thickness of the air distribution duct 300. After the air distribution hole passes through annular guide boss 12221, sealing ring 12222 and curved inner wall 1211 cooperate to clamp the wall of the air distribution duct 300, thereby achieving a sealed connection. In this sealed state, since the wall of the air distribution duct 300 is clamped between sealing ring 12222 and curved inner wall 1211, the wall of the air distribution duct 300 can be well aligned with the curved inner wall 1211, thereby balancing the forces between the curved support plate 121 and the wall of the air distribution duct 300, which is beneficial to improving the operating stability and service life of the curved support plate 121. Based on this, the sealing ring 12222 is supported on the end face of the annular guide boss 12221, and the outer diameter of the sealing ring 12222 is smaller than the outer diameter of the annular guide boss 12221. After the air distribution hole passes through the annular guide boss 12221, the annular guide boss 12221 can protect the sealing ring 12222 to avoid friction damage between the hole wall of the air distribution hole and the sealing ring 12222, and at the same time avoid the hole wall of the air distribution hole driving the sealing ring 12222 to shift and affect the sealing.

[0061] In some examples, an end surface of the annular guide boss 12221 near one end of the arc-shaped inner wall 1211 is provided with a receiving groove, and a portion of the sealing ring 12222 is embedded in the receiving groove. Exemplarily, the receiving groove is hemispherical, for embedding half of the sealing ring 12222 in the receiving groove.

[0062] Based on the above design, the sealing ring 12222 is partially embedded in the accommodating groove. After the air distribution hole passes through the annular guide boss 12221, the sealing ring 12222 can be better protected from the influence of the hole wall of the air distribution hole. The position of the sealing ring 12222 is accurate and stable, which is conducive to the sealing ring 12222 to reliably cooperate with the arc-shaped inner wall 1211 to clamp the wall of the air distribution pipe 300 to achieve sealing.

[0063] Furthermore, in the end face of the annular guide boss 12221 near the arcuate inner wall 1211, the accommodating groove is located at one end of the outer wall of the main body of the plug-in connection section 1222, that is, the accommodating groove is arranged inwardly; a section of the outer wall of the main body of the plug-in connection section 1222 is also provided with an anti-slip boss 12223, which is located on the side of the accommodating groove near the arcuate inner wall 1211, and the anti-slip boss 12223 contacts and cooperates with the sealing ring 12222. The anti-slip boss 12223 can be annular in design, surrounding a circle along the circumference of the main body of the plug-in connection section 1222; the anti-slip boss 12223 can also be provided in plurality, with the plurality of anti-slip bosses 12223 distributed at intervals along the circumference of the main body of the plug-in connection section 1222.

[0064] In the above design, the accommodating groove is located at one end of the outer wall of the main body near the plug-in connecting section 1222. On the one hand, the sealing ring 12222 is kept away from the outer edge of the annular guide boss 12221, so that the sealing ring 12222 can better avoid contact with the hole wall of the air distribution hole after the air distribution hole passes through the annular guide boss 12221; on the other hand, it is convenient for contact with the anti-slip boss 12223. By superimposing the anti-slip limiting effect of the anti-slip boss 12223, the position of the sealing ring 12222 is more accurate and stable, which is more conducive to the sealing ring 12222 to reliably cooperate with the arc-shaped inner wall 1211 to clamp the pipe wall of the air distribution pipe 300 to achieve sealing.

[0065] In some examples, in the axial direction of the plug-in vent tube 122, the annular guide boss 12221 is located in the middle of the main body of the plug-in connection section 1222. In other words, on the side of the annular guide boss 12221 away from the arc-shaped inner wall 1211, there is a section of the main body of the plug-in connection section 1222.

[0066] Based on the above design, when the plug-in connecting section 1222 is inserted into the air distribution hole of the air distribution duct 300, the main body of the plug-in connecting section 1222 located at the end is first inserted into the air distribution hole. The main body of the plug-in connecting section 1222 can be positioned and guided, which is conducive to sliding the air distribution hole to the annular guide boss 12221 more accurately and quickly.

[0067] Optionally, in the axial direction of the plug-in ventilation pipe 122, the distance from the annular guide boss 12221 to the end of the plug-in connection section 1222 away from the arcuate inner wall 1211 is a first specified distance, and the first specified distance is greater than the wall thickness of the air distribution duct 300. In other words, the axial length of the main body of the plug-in connection section 1222 at the end is greater than the wall thickness of the air distribution duct 300; before the air distribution hole moves to the annular guide boss 12221, the air distribution hole can be completely sheathed on the outer wall of the main body of the plug-in connection section 1222 at the end.

[0068] In some embodiments, see Figures 4 to 6 The end surface of the annular guide boss 12221 near the arc-shaped inner wall 1211 is embedded with a sealing sleeve 12224, which is made of rubber. The sealing sleeve 12224 is located outside the sealing ring 12222 and is spaced apart from the sealing ring 12222. The distance between the sealing sleeve 12224 and the arc-shaped inner wall 1211 is less than the wall thickness of the gas distribution duct 300. Figure 7-Figure 8 , so that the sealing sleeve 12224 cooperates with the arc-shaped inner wall 1211 in a curved shape to clamp the pipe wall of the gas distribution pipe 300.

[0069] In this design, sealing sleeve 12224 cooperates with curved inner wall 1211 to clamp the wall of air distribution duct 300, thereby achieving a sealed connection. This double seal, achieved by sealing ring 12222 and sealing sleeve 12224, helps improve the sealing performance of the connection. The curved shape of sealing sleeve 12224 presses against the wall of air distribution duct 300, allowing it to exert greater force on the wall of air distribution duct 300, thus achieving a better seal. Furthermore, after the air distribution hole passes through annular guide boss 12221, sealing sleeve 12224 also separates sealing ring 12222 from the wall of the air distribution hole from its outer side, thereby better protecting sealing ring 12222 and ensuring a more accurate and stable position of sealing ring 12222.

[0070] Optionally, the distance between the end of the sealing sleeve 12224 closest to the curved inner wall 1211 and the outer wall of the main body of the plug-in connection section 1222 is a second specified distance, and the distance between the end of the sealing sleeve 12224 farther from the curved inner wall 1211 and the outer wall of the main body of the plug-in connection section 1222 is a third specified distance, where the second specified distance is less than or equal to the third specified distance. In other words, the sealing sleeve 12224 can extend axially along the plug-in vent tube 122, or can extend obliquely toward the outer wall of the main body of the plug-in connection section 1222.

[0071] Based on the above design, the working principle is as follows:

[0072] After the air distribution hole passes through the annular guide boss 12221, the hole wall of the air distribution hole abuts against the outer wall of the sealing sleeve 12224, and pushes the sealing sleeve 12224 to bend toward the outer wall of the main body close to the plug-in connecting section 1222; as the air distribution hole further approaches the arc-shaped inner wall 1211 along the axial direction, the bent sealing sleeve 12224 slides relative to the air distribution pipe 300, gradually separates from the air distribution hole and bends to fit the arc-shaped inner wall 1211.

[0073] Under this working principle, on the one hand, after the air distribution hole passes through the annular guide boss 12221 and before the outer wall of the air distribution duct 300 fits the curved inner wall 1211, the sealing sleeve 12224 can guide the movement of the air distribution hole and act as a transition buffer, making the clamping process smoother. On the other hand, the air distribution duct 300 always slides and rubs the sealing sleeve 12224 in the same direction, so that the sealing sleeve 12224 remains in the same bending direction. Figure 7-Figure 8 When the outer side of the pipe wall of the gas distribution duct 300 fits the arc-shaped inner wall 1211, a front end section of the sealing sleeve 12224 can fit smoothly on the pipe wall of the gas distribution duct 300 through the side wall, ensuring better sealing contact performance.

[0074] Exemplarily, sealing sleeve 12224 extends axially along the connected ventilation tube 122, with the second specified distance being equal to the third specified distance. When the extended length of sealing sleeve 12224 is constant, this design facilitates production and installation of sealing sleeve 12224 compared to an inclined arrangement. Furthermore, sealing sleeve 12224 has a wider range of contact with the wall of air distribution duct 300, achieving a better seal.

[0075] In some exemplary embodiments, the mounting base 120 is composed of a curved support plate 121 and a plug-in ventilation tube 122 .

[0076] In the present application, the outer wall of the main body of the plug-in connection section 1222 is provided with an annular guide boss 12221, and the sealing ring 12222 and the arcuate inner wall 1211 clamp the wall of the gas distribution duct 300, so that the plug-in connection section 1222 can achieve an interference fit and clamping seal with the gas distribution duct 300. Based on this, in some embodiments, the mounting base 120 is only equipped with the arcuate support plate 121 and the plug-in vent, and the plug-in connection section 1222 is used to achieve an interference fit with the gas distribution duct 300, making the connection operation more convenient.

[0077] It should be noted that in the embodiment of the present application, the mounting base 120 can also be provided with other clamping structures that cooperate with the arc-shaped support plate 121, which are used to cooperate with the arc-shaped support plate 121 to clamp the air distribution duct 300, which is beneficial to improve the connection stability between the mounting base 120 and the air distribution duct 300.

[0078] See also Figure 9In other exemplary embodiments, the arc-shaped support plate 121 is provided with positioning sliders 1212 at both ends in the circumferential direction, and the positioning sliders 1212 exemplarily extend along the radial direction of the arc-shaped support plate 121 toward the outer side of the arc-shaped support plate 121; the mounting base 120 also includes an arc-shaped engaging plate 123, and the arc-shaped engaging plate 123 is used to slidably cooperate with the air distribution pipe 300 along the axial direction of the arc-shaped engaging plate 123, and the arc-shaped engaging plate 123 cooperates with the arc-shaped support plate 121 to engage the air distribution pipe 300, and the arc-shaped engaging plate 123 is provided with positioning sleeves 1231 at both ends in the circumferential direction, and the positioning sleeves 1231 are used to slidably sleeve on the outside of the positioning slider 1212 along the axial direction of the arc-shaped engaging plate 123.

[0079] Optionally, through holes are provided through the positioning slider 1212 and the positioning sleeve 1231 for reinforcement with fasteners such as bolts.

[0080] In this design, the arc-shaped engaging plate 123 and the arc-shaped supporting plate 121 engage the air distribution duct 300, and then fix it through the cooperation of the positioning sleeve 1231 and the positioning slider 1212, so that the connection between the mounting base 120 and the air distribution duct 300 is more stable.

[0081] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An oxygenating device for aerobic digestion of sewage, characterized in that: The oxygenating device for aerobic digestion treatment of sewage comprises a disc aerator body and a mounting base; The mounting base includes an arc-shaped support plate and a plug-in ventilation pipe, the arc-shaped inner wall of the arc-shaped support plate matches the air distribution pipe, the plug-in ventilation pipe is radially penetrated through the middle part of the mounting base along the arc-shaped support plate, the plug-in ventilation pipe includes a threaded connection section and a plug-in connection section that are interconnected, the threaded connection section is located on the outer side of the arc-shaped support plate, the threaded connection section is threadedly connected to the ventilation joint of the disc aerator body, the plug-in connection section is located on the inner side of the arc-shaped support plate, and the main body of the plug-in connection section matches the air distribution hole of the air distribution pipe; A section of the outer wall of the main body of the plug-in connection section is provided with an annular guide boss, the outer diameter of the end of the annular guide boss away from the arc-shaped inner wall is the same as the outer diameter of the main body of the plug-in connection section, and the outer diameter of the annular guide boss gradually increases from the end away from the arc-shaped inner wall to the end close to the arc-shaped inner wall; The outer wall of the main body of the plug-in connection section is also sleeved with a sealing ring, which abuts against the end face of the annular guide boss close to the arc-shaped inner wall. The outer diameter of the sealing ring is smaller than the outer diameter of the annular guide boss close to the arc-shaped inner wall. The distance between the sealing ring and the arc-shaped inner wall matches the thickness of the pipe wall of the air distribution pipe, so that the sealing ring and the arc-shaped inner wall can cooperate to clamp the pipe wall of the air distribution pipe.

2. The oxygenation device for aerobic digestion treatment of sewage according to claim 1, characterized in that: An accommodating groove is formed on an end surface of the annular guide boss close to one end of the arc-shaped inner wall, and a portion of the sealing ring is embedded in the accommodating groove.

3. The oxygenation device for aerobic digestion treatment of sewage according to claim 2, characterized in that: In the end face of the annular guide boss close to one end of the arc-shaped inner wall, the accommodating groove is located at one end of the outer wall of the main body of the plug-in connection section; a section of the outer wall of the main body of the plug-in connection section is also provided with an anti-slip boss, and the anti-slip boss is located on one side of the accommodating groove close to the arc-shaped inner wall, and the anti-slip boss is in contact with the sealing ring.

4. The oxygenation device for aerobic digestion treatment of sewage according to claim 1, characterized in that: In the axial direction of the plug-in ventilation pipe, the annular guide boss is located in the middle portion of the main body of the plug-in connection section.

5. The oxygenation device for aerobic digestion treatment of sewage according to claim 4, characterized in that: In the axial direction of the plug-in ventilation pipe, the distance from the annular guide boss to the end of the main body of the plug-in connection section away from the arc-shaped inner wall is a first specified distance, and the first specified distance is greater than the wall thickness of the air distribution pipe.

6. The oxygenation device for aerobic digestion treatment of sewage according to claim 1, characterized in that: A sealing sleeve is embedded in the end face of the annular guide boss close to one end of the arc-shaped inner wall. The sealing sleeve is located on the outside of the sealing ring and is spaced apart from the sealing ring. The distance between the sealing sleeve and the arc-shaped inner wall is less than the thickness of the pipe wall of the air distribution pipe, so that the sealing sleeve cooperates with the arc-shaped inner wall in a curved form to clamp the pipe wall of the air distribution pipe.

7. The oxygenation device for aerobic digestion treatment of sewage according to claim 6, characterized in that: The distance from the end of the sealing sleeve close to the arc-shaped inner wall to the outer wall of the main body of the plug-in connection section is a second specified distance, and the distance from the end of the sealing sleeve away from the arc-shaped inner wall to the outer wall of the main body of the plug-in connection section is a third specified distance, and the second specified distance is less than or equal to the third specified distance.

8. The oxygenation device for aerobic digestion treatment of sewage according to claim 7, characterized in that: The sealing sleeve extends along the axial direction of the plug-in ventilation tube, and the second specified distance is equal to the third specified distance.

9. The oxygenation device for aerobic digestion treatment of sewage according to any one of claims 1 to 8, characterized in that: The mounting base is composed of the arc-shaped support plate and the plug-in ventilation pipe.

10. The oxygenation device for aerobic digestion treatment of sewage according to any one of claims 1 to 8, characterized in that: The arc-shaped support plate is provided with positioning sliders at both ends in the circumferential direction; the mounting base also includes an arc-shaped engaging plate, which is used to slidably cooperate with the air distribution duct along the axial direction, and the arc-shaped engaging plate cooperates with the arc-shaped support plate to engage the air distribution duct, and the arc-shaped engaging plate is provided with positioning sleeves at both ends in the circumferential direction, and the positioning sleeves are used to slidably sleeve on the outside of the positioning slider along the axial direction of the arc-shaped engaging plate.

Images