Surface aerator
By designing inclined blades in the surface aerator, tangent inflow and lifting are achieved, the problems of large blade motion resistance and low water body lifting efficiency in the prior art are solved, and the aeration effect and energy efficiency are improved.
Patent Information
- Application Number
- CN202421766933.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-24
Smart Images
Figure CN222886702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewage treatment devices, in particular to a surface aerator. Background Art
[0002] A surface aerator (hereinafter referred to as a surface aerator) is a key device for an oxidation ditch in sewage biological treatment. It rotates an aeration impeller to cause intense agitation on the water surface and mix with air, so that oxygen in the air dissolves in water.
[0003] In the aerator in the related art, the impact of the blade and the water body is utilized to make the water body splash around. The resistance of the blade movement is large and the water body lifting efficiency is low. Summary of the Utility Model
[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a surface aerator, in which the material lifting process is smoother, the blade rotation resistance is small, and the lifting efficiency is high.
[0005] The surface aerator according to the embodiment of the utility model includes: a base body, the base body can rotate axially and the rotation axis extends in the up and down direction; blades, the blades are arranged on the base body, and in the reverse rotation direction, the blades extend obliquely upward, and at least the upper surface of the blades is a plane.
[0006] According to the surface aerator of the embodiment of the utility model, the blades are obliquely arranged, and at least the upper surface of the blades is a plane. In this way, when the base body rotates, the surface aerator can realize tangential inflow and lifting of the material to be lifted, that is, the blades can make the water body and sludge to be lifted move obliquely upward along the streamline body. There is no "impact" between the blades and the lifted material, and the lifted material moves along the streamline body, the lifting is smooth, the resistance is small, the lifting efficiency is high, the energy consumption is small, the throwing and dispersion degree is large, it is easier to realize the mixing of the lifted material and air, and it is more beneficial to aeration and oxygenation.
[0007] In some embodiments, the lower surface of the blade is a plane or a curved surface.
[0008] In some embodiments, the upper surface of the blade is parallel to the lower surface of the blade.
[0009] In some embodiments, a plurality of the blades are circumferentially spaced apart around the base body, and a flow channel for fluid flow is defined between adjacent blades.
[0010] In some embodiments, the base body includes a first component, the first component is a flat plate component, and the upper end of the blade is connected to the lower end surface of the first component.
[0011] In some embodiments, the base includes a first component, an outer peripheral surface of the first component is a conical surface, and an upper end of the blade is connected to the outer peripheral surface of the first component or faces the outer peripheral surface of the first component.
[0012] In some embodiments, the base includes a second component, and the blade is connected to an outer peripheral surface of the second component.
[0013] In some embodiments, the base includes a first component and a second component, a lower end surface of the first component and an upper end surface of the second component overlap and are connected in the up-down direction.
[0014] In some embodiments, the surface aerator further includes a stabilizing cone, a rotating shaft is connected to an upper end in the axial direction of the base, one axial end of the stabilizing cone is connected to a lower end in the axial direction of the base, the stabilizing cone is a solid of revolution, and an outer diameter of one axial end of the stabilizing cone is larger than an outer diameter of the other axial end of the stabilizing cone.
[0015] In some embodiments, an axial other end surface of the base and an axial one end surface of the stabilizing cone overlap and are connected in the up-down direction.
[0016] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:
[0018] Figure 1 is an overall structure diagram of the surface aerator according to an embodiment of the present utility model;
[0019] Figure 2 is a schematic structural diagram of the surface aerator according to an embodiment of the present utility model;
[0020] Figure 3 is a schematic structural diagram of the blade in the surface aerator according to an embodiment of the present utility model.
[0021] Reference numerals:
[0022] Surface aerator 100;
[0023] Base 10; First component 101; Second component 102;
[0024] Blade 20;
[0025] Upper surface 201; Lower surface 202; Flow channel 203; First edge 204; Second edge 205; Third edge 206;
[0026] Stable cone 30; rotating shaft 40; vertical direction F1. Detailed implementation mode
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0028] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in the specification of the utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of the present utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.
[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0030] The term "and / or" in the present utility model only describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the front and rear associated objects.
[0031] In the embodiments of the present utility model, the same reference numerals represent the same components, and for the sake of simplicity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components shown in the drawings of the embodiments of the present utility model, as well as the overall thickness, length, width, etc. of the integrated device are only for illustrative purposes and should not constitute any limitation to the present utility model.
[0032] In the present utility model, "a plurality of" means two or more (including two).
[0033] The following will describe the surface aerator 100 of the present utility model in conjunction with Figures 1 to 3 to describe the surface aerator 100 of the present utility model.
[0034] As Figures 1 to 3 shown, the surface aerator 100 according to an embodiment of the present utility model includes a base body 10 and blades 20. The base body 10 is axially rotatable and the rotation axis extends in the up and down direction F1; the blades 20 are provided on the base body 10, and in the reverse rotation direction, the blades 20 extend obliquely upward, and at least the upper surface 201 of the blades 20 is a plane.
[0035] Specifically, the base body 10 is used to fix the blades 20, and the base body 10 can rotate about an axis extending in the up and down direction F1 so as to drive the blades 20 to rotate about an axis extending in the up and down direction F1.
[0036] In the reverse rotation direction, the blades 20 extend obliquely upward. For example, reference can be made to Figure 1 shown, the blades 20 rotate in the clockwise direction, and in the counterclockwise direction, the blades 20 extend obliquely upward. For example, reference can be made to Figure 2 , the blades 20 rotate counterclockwise, then in the clockwise direction, the blades 20 extend obliquely upward. In the reverse rotation direction, the blades 20 extend obliquely upward, that is, the included angle between the tangent direction at any position of the blades 20 and the horizontal plane is less than 90°.
[0037] For the surface aerator 100 that rotates in the clockwise direction, during operation, the water body has a tendency to deviate from the lower surface 202 of the blades 20. The lower surface 202 of the blades 20 is the back surface, and the upper surface 201 of the blades 20 is the front surface; for the surface aerator 100 that rotates in the counterclockwise direction, during operation, the water body has a tendency to deviate from the lower surface 202 of the blades 20. The lower surface 202 of the blades 20 is the back surface, and the upper surface 201 of the blades 20 is the front surface.
[0038] For the surface aerator 100 according to an embodiment of the present utility model, the blades 20 are obliquely arranged, and at least the upper surface 201 of the blades 20 is a plane. In this way, when the base body 10 rotates, the surface aerator 100 can achieve tangential inflow and lifting of the material to be lifted, that is, the blades 20 can make the lifted water body and sludge move obliquely upward almost along the streamline body. There is no "impact" action between the blades 20 and the lifted material. The lifted material moves almost along the streamline body, with smooth lifting, small resistance, high lifting efficiency, low energy consumption, large degree of throwing and dispersion, and it is easier to realize the mixing of the lifted material and air, which is more conducive to aeration and oxygenation.
[0039] In some embodiments, reference can be made to Figure 1 , the lower surface 202 of the blades 20 is a plane or a curved surface.
[0040] For an embodiment in which both the upper surface 201 and the lower surface 202 of the blade 20 are flat surfaces, the machining complexity of the blade 20 is low, which is beneficial to reducing the manufacturing cost of the blade 20, and further beneficial to reducing the production cost of the surface aerator 100.
[0041] Wherein, both the upper surface 201 and the lower surface 202 of the blade 20 may be flat surfaces, the upper surface 201 and the lower surface 202 of the blade 20 may be parallel, or, the upper surface 201 and the lower surface 202 of the blade 20 may also not be parallel.
[0042] Wherein the upper surface 201 of the blade 20 is a flat surface and the lower surface 202 of the blade 20 is a curved surface. In this way, the different flow velocities of the water body flowing along the upper surface 201 and the lower surface 202 of the blade 20 can be utilized, so as to further improve the flow pattern of the lower surface and improve the lifting efficiency of the water body.
[0043] In some embodiments, reference may be made to Figure 1 that the upper surface 201 and the lower surface 202 of the blade 20 are parallel.
[0044] That is to say, the blade 20 is a flat plate type blade. In this way, the processing of the blade 20 is more convenient and the processing cost is lower.
[0045] In some embodiments, a plurality of blades 20 are circumferentially spaced around the base body 10, and a flow channel 203 for fluid flow is defined between adjacent blades 20. By adjusting the number of the blades 20, the lifting efficiency of the surface aerator 100 for the water body and the sludge can be maximized, and a better aeration and oxygenation effect can be obtained.
[0046] In some embodiments, the base body 10 includes a first component 101, the first component 101 is a flat plate member, and the upper end of the blade 20 is connected to the lower end surface of the first component 101. For example, the first component 101 is a cylindrical member extending along the up-and-down axis, and the upper end of the blade 20 is connected to the lower end surface of the first component 101. In this way, the structure of the surface aerator 100 is simple, the production cost is low, and it is easy to promote.
[0047] In some embodiments, reference may be made to Figure 1 and Figure 2 that the base body 10 includes a first component 101, and along the up-and-down direction, the circumferential side surface of the first component 101 gradually approaches the rotation axis of the base body 10, and the upper end of the blade 20 is connected to the outer peripheral surface of the first component 101. For example, the outer peripheral surface of the first component 101 is a conical surface.
[0048] In some embodiments, the base body 10 includes a first component 101. Along the direction from top to bottom, the circumferential side surface of the first component 101 gradually approaches the rotation axis of the base body 10, and the upper end of the blade 20 faces the outer peripheral surface of the first component 101.
[0049] By providing the first component 101, the first component 101 can guide the lifting material, and can obliquely guide the lifting material into the air, avoiding the problem of a large bend in the flow path of the lifting material, which is beneficial to increasing the flow smoothness of the lifting material, reducing the flow resistance of the lifting material, and increasing the scattering effect of the lifting material being scattered around.
[0050] For the embodiment where the blade 20 is connected to the outer peripheral surface of the first component 101, that is to say, the first component 101 functions to install and fix the blade 20. For the embodiment where the base body 10 includes both the first component 101 and the second component 102, and the blade 20 is fixed to both the first component 101 and the second component 102, it is beneficial to increase the installation stability of the blade 20, and the blade 20 is not likely to be damaged or detached.
[0051] In some embodiments, reference may be made to Figure 1 and Figure 2 , the base body 10 includes a second component 102, and the blade 20 is connected to the outer peripheral surface of the second component 102.
[0052] Specifically, the blade 20 is connected to the second component 102 on the side in the radial direction and facing the outer peripheral surface of the second component 102, and the radial direction is perpendicular to the up and down direction F1. In this way, the connection area between the blade 20 and the base body 10 is larger, and the blade 20 is not likely to shake or be damaged, and the connection stability between the blade 20 and the base body 10 is better. For example, the second component 102 may be a cylindrical member and its central axis extends along the up and down direction F1.
[0053] In some embodiments, reference may be made to Figure 1 and Figure 2 , the base body 10 includes a first component 101 and a second component 102, and the lower end surface of the first component 101 and the upper end surface of the second component 102 overlap and are connected in the up and down direction F1. In this way, the connection position between the first component 101 and the second component 102 can have a relatively smooth transition, which can reduce the possibility of flow defects when the lifting material passes through the first component 101 and the second component 102, and reduce the flow resistance of the lifting material.
[0054] In some embodiments, reference may be made to Figure 3, the blade 20 may include a first edge 204, a second edge 205, and a third edge 206. Among them, the first edge 204 is used to connect to the outer peripheral surface of the first component 101, the second edge 205 is used to connect to the outer peripheral surface of the second component 102, and the third edge 206 is located on the side radially away from the second component 102.
[0055] In some embodiments, reference may be made to Figure 1 and Figure 2 , the surface aerator 100 further includes a stabilizing cone 30. The upper axial end of the base 10 is connected to a rotating shaft 40, and the lower axial end of the base 10 is connected to one axial end of the stabilizing cone 30. The stabilizing cone 30 is a rotating body, and the outer diameter of one axial end of the stabilizing cone 30 is greater than the outer diameter of the other axial end of the stabilizing cone 30. For example, the outer peripheral surface of the stabilizing cone 30 is in the shape of a frustum of a cone, a cone, or a top, etc. The outer diameter of the other axial end of the stabilizing cone 30 can be greater than zero or can be zero.
[0056] Specifically, the rotating shaft 40 is connected to the upper end surface of the base 10, and the stabilizing cone 30 is connected to the lower end surface of the base 10. The stabilizing cone 30 utilizes the principle of rotational stability of a gyroscope, can improve the fluid flow field, and can avoid or reduce the lateral vibration and swaying of the surface aerator 100 during operation, has the functions of stabilizing the surface aerator 100, reducing the working noise of the surface aerator 100, and extending the service life of the surface aerator 100.
[0057] In embodiments where the surface aerator 100 includes a stabilizing cone 30, the base 10 may only include the first component 101, or the base 10 may only include the second component 102 (in this case, the rotating shaft 40 is directly connected to the second component 102), or the base 10 may include both the first component 101 and the second component 102.
[0058] In some embodiments, one or more of the first component 101, the second component 102, and the stabilizing cone 30 may be solid or hollow.
[0059] In some embodiments, as Figure 1 and Figure 2 shown, the other axial end surface of the base 10 and the one axial end surface of the stabilizing cone 30 overlap and are connected in the up-down direction F1.
[0060] That is to say, at the connection position between the base 10 and the stabilizing cone 30, the transition is smooth, which can reduce the possibility of flow defects when the lifting material passes through the connection position between the base 10 and the stabilizing cone 30, and reduce the flow resistance of the lifting material; at the same time, the connection area between the base 10 and the stabilizing cone 30 is also larger, and the connection stability is better.
[0061] A specific embodiment is given below to illustrate the surface aerator 100 of the present invention.
[0062] As shown Figures 1 to 3 in the figure, the surface aerator 100 includes a first component 101, a second component 102, a stabilizing cone 30 and blades 20. The lower end surface of the first component 101 and the upper end surface of the second component 102 overlap and are connected in the up-and-down direction F1. The lower end surface of the second component 102 and the upper end surface of the stabilizing cone 30 overlap and are connected in the up-and-down direction F1.
[0063] The first component 101, the second component 102 and the stabilizing cone 30 form a base body 10, and the base body 10 can rotate axially and the rotation axis extends along the up-and-down direction F1. Along the direction from top to bottom, the outer peripheral surface of the first component 101 is a conical surface, the upper end of the blade 20 is connected to the outer peripheral surface of the first component 101, and the blade 20 is also connected to the outer peripheral surface of the second component 102. The stabilizing cone 30 is a rotating body and the outer peripheral surface is in the shape of a top.
[0064] In the reverse rotation direction, the blade 20 extends obliquely upward. The upper surface 201 and the lower surface 202 of the blade 20 are both flat surfaces and are parallel to each other. A plurality of blades 20 are circumferentially spaced around the base body 10, and a flow channel 203 for fluid flow is defined between adjacent blades 20.
[0065] For the surface aerator 100 of this embodiment, when the base body 10 rotates, tangential inflow and lifting can be achieved, that is, the blade 20 can make the lifted water body and silt move obliquely upward almost along the streamline body. There is no "impact" effect between the blade 20 and the lifted substance. The lifted substance moves almost along the streamline body, with smooth lifting, small resistance, high lifting efficiency, low energy consumption, large degree of throwing and dispersion, easier to realize the mixing of the lifted object and air, more conducive to aeration and oxygenation, and stable operation.
[0066] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0067] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.
Claims
1. A surface aerator, characterized in that: include: A base (10), wherein the base (10) is axially rotatable and the rotation axis extends along the up-down direction (F1); The blade (20) is arranged on the base (10), and the blade (20) extends upward at an angle opposite to the rotation direction, and at least the upper surface (201) of the blade (20) is a plane.
2. The surface aerator according to claim 1, characterized in that: The lower surface (202) of the blade (20) is a flat surface or a curved surface.
3. The surface aerator according to claim 1, characterized in that: The upper surface (201) of the blade (20) and the lower surface (202) of the blade (20) are parallel.
4. The surface aerator according to claim 1, characterized in that: A plurality of blades (20) are arranged at intervals in the circumferential direction around the base body (10), and flow channels (203) for fluid flow are defined between adjacent blades (20).
5. The surface aerator according to claim 1, characterized in that: The base (10) comprises a first component (101), the first component (101) is a flat plate, and the upper end of the blade (20) is connected to the lower end surface of the first component (101).
6. The surface aerator according to claim 1, characterized in that: The base (10) comprises a first component (101), the outer peripheral surface of the first component (101) is a conical surface, and the upper end of the blade (20) is connected to the outer peripheral surface of the first component (101) or faces the outer peripheral surface of the first component (101).
7. The surface aerator according to any one of claims 1 to 6, characterized in that: The base body (10) comprises a second component (102), and the blade (20) is connected to the outer peripheral surface of the second component (102).
8. The surface aerator according to claim 1, characterized in that: The base (10) comprises a first component (101) and a second component (102), wherein a lower end surface of the first component (101) and an upper end surface of the second component (102) overlap and are connected in the up-down direction (F1).
9. The surface aerator according to claim 1, characterized in that: It also includes a stabilizing cone (30), wherein the axial upper end of the base (10) is connected to a rotating shaft (40), and the axial lower end of the base (10) is connected to one axial end of the stabilizing cone (30), and the stabilizing cone (30) is a rotating body, and the outer diameter of one axial end of the stabilizing cone (30) is greater than the outer diameter of the other axial end of the stabilizing cone (30).
10. The surface aerator according to claim 9, characterized in that: The other axial end surface of the base (10) overlaps and is connected to the one axial end surface of the stabilizing cone (30) in the up-down direction (F1).