Wastewater treater and aeration disc thereof

Abstract

The utility model discloses a wastewater treater and an aeration disc thereof. The aeration disc comprises an air distribution base, an aeration membrane and a pressing and fixing piece, the gas distribution base comprises a base body and a pressing part arranged on the periphery of the base body, and a pressing space is formed between the pressing part and the base body. The aeration membrane is arranged on the base body, and the periphery of the aeration membrane extends into the pressing space. An annular pressing and fixing piece compresses the aeration diaphragm to be installed in the pressing space, and the periphery of the aeration diaphragm and the base body are connected in a sealing and pressing mode through the pressing and fixing piece. According to the wastewater treatment device and the aeration disc thereof, the pressing and fixing piece compresses the aeration membrane and installs the aeration membrane in the pressing space, so that the aeration membrane can be replaced and reused, and the depreciation cost of equipment is reduced. And materials are not damaged in the dismounting process, so that the service life is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and particularly relates to a wastewater processor and an aeration disc thereof. Background Art

[0002] As is well known, the process of sewage treatment is often accompanied by oxygenation, and the most commonly used oxygen supply is a microporous aeration disc. The aeration disc is connected to the aeration cross pipe at the bottom of the pool through a saddle. For anti-corrosion requirements, the aeration disc (including gland, aeration diaphragm, base), saddle, and aeration cross pipe at the bottom of the pool are generally made of non-metallic materials. The current sealing connection method of the aeration head is mainly threaded connection, that is, threaded connection is used between the gland of the aeration head and the base of the aeration head, and threaded connection is used between the air inlet pipe of the aeration head and the saddle.

[0003] The main problems of threaded connection are as follows: The surface of the rubber is relatively rough, the friction force is large, and the fixing stroke is long. During the screwing process of the gland of the aeration head and the base of the aeration head, a large external force is required to tighten the gland. Due to the relatively soft material of the high molecular plastic, its thread will be damaged to a certain extent when tightened and fixed with a large external force. Once disassembled, it is difficult to tighten it again. The damage to the thread makes it difficult for the overall equipment of the aeration head to be reused again, reducing the service life of the aeration head. Secondly, the reason for the short service life of threaded connection is the creep of plastic (Creep refers to the continuous and irreversible deformation of high molecular materials over time under continuous stress). During installation, the tightening degree makes the force on the thread far exceed the elastic deformation range. Excessive tightening and fixing cause the teeth of the thread to creep and deform. After years of continuous creep, the thread is difficult to reset after being disassembled. Summary of the Utility Model

[0004] Based on this, in view of the problem that the existing aeration disc uses non-metallic materials and the sealing connection method of the aeration head uses threaded connection, resulting in difficulty in resetting the aeration head after disassembly and inability to reuse it, it is necessary to provide a wastewater treatment device and an aeration disc thereof.

[0005] An aeration disc, comprising:

[0006] A gas distribution base, including a base body and a pressing part provided on the periphery of the base body, a pressing space is formed between the pressing part and the base body;

[0007] An aeration diaphragm, provided on the base body, and the periphery of the aeration diaphragm extends into the pressing space; and

[0008] An annular pressing member, which compresses the aeration diaphragm and is installed in the pressing space, and the pressing member seals and presses the periphery of the aeration diaphragm against the base body.

[0009] In one embodiment, a sealing convex ring is provided on the base body, the sealing convex ring is located within the pressing space, and the periphery of the aeration diaphragm is provided on the sealing convex ring.

[0010] In one embodiment, the area of the aeration diaphragm within the pressing space is provided with a protruding anchoring edge, and the base body is provided with a receiving groove for receiving the anchoring edge.

[0011] In one embodiment, the pressing member is integrally circular;

[0012] Or the pressing member is integrally circular, and the pressing member is provided with a plurality of notches enabling the pressing member to be bent;

[0013] Or the pressing member includes a plurality of segments, and the plurality of segments are sequentially spliced along the circumferential direction to form the pressing member;

[0014] Or the pressing member is a strip capable of being bent and deformed, and the pressing member is bent along the circumferential direction to form a ring.

[0015] In one embodiment, the pressing member is provided with a concavo-convex structure, a hollow structure or a reinforcing structure.

[0016] In one embodiment, the pressing portion and / or the base body are provided with disassembly holes.

[0017] In one embodiment, the base body is a flat plate structure, and the opening of the pressing space is horizontally arranged; or

[0018] The periphery of the base body is turned downwards to form a flanging, the pressing portion is connected to the flanging, and the opening of the pressing space is vertically arranged.

[0019] In one embodiment, the pressing portion and the base body are of a split structure, and the pressing portion and the base body are detachably connected.

[0020] In one embodiment, the pressing portion and the base body are connected by snap connection, pin connection or threaded connection.

[0021] A wastewater treatment device includes:

[0022] An aeration disc as described in any one of the above.

[0023] For the above wastewater treatment device and its aeration disc, the aeration diaphragm belongs to a structure prone to clogging and fouling. When the aeration diaphragm needs to be disassembled, the pressing member is taken out from the pressing space, and then the replacement of the aeration diaphragm can be carried out. The above wastewater treatment device and its aeration disc can realize the replacement and reuse of the aeration diaphragm, reduce the equipment depreciation cost, cause no damage to the materials during the disassembly and assembly process, and greatly extend the service life. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0025] Figure 1 Schematic diagram of the connection between the aeration plate and the aeration cross pipe in one embodiment;

[0026] Figure 2 for Figure 1 An enlarged view of the medium-voltage fasteners installed in the press-fit space;

[0027] Figure 3 for Figure 2 Schematic diagram of the middle anchoring edge and the sealing convex ring combined into one;

[0028] Figure 4 for Figure 3 A schematic diagram of the middle compression space with the opening facing upward;

[0029] Figure 5 A schematic diagram of a plurality of mounting holes designed along the circumference of the base body;

[0030] Figure 6 for Figure 5 Cross-sectional view of the large and small holes of the middle mounting hole;

[0031] Figure 7 A schematic diagram of the design of the insertion rod on the press-fit part;

[0032] Figure 8 for Figure 5 The base body shown is Figure 7 A schematic diagram of the assembly of the press-fit portion shown;

[0033] Figure 9 A schematic diagram showing the connection between the pressing portion and the base body via a positioning pin;

[0034] Figure 10 Schematic diagram of the press-fit part and the base body connected by threads

[0035] Figure 11 A schematic diagram of opening multiple notches in a compression member;

[0036] Figure 12 is a schematic diagram of a bar-shaped pressing piece;

[0037] Figure 13 It is a schematic diagram of assembling a plurality of segments of a compression member;

[0038] Figure 14 Schematic diagrams of various cross sections of compression fittings;.

[0039] Reference numerals:

[0040] 1 - Aeration disc, 2 - Air inlet pipe, 3 - Aeration cross pipe, 4 - Saddle, 10 - Air distribution base, 11 - Base body, 111 - Sealing convex ring, 112 - Accommodating groove, 113 - Flange, 12 - Pressing part, 121 - Extension part, 122 - Engaging part,, 123 - Disassembly hole, 13 - Pressing space, 132 - Opening, 14 - Mounting hole, 141 - Large hole, 142 - Small hole, 143 - Guiding inclined surface, 144 - Insert rod, 145 - Clamping joint, 146 - Pin rod, 15 - Positioning pin, 20 - Aeration diaphragm, 21 - Anchoring edge, 30 - Pressing member, 31 - Notch, 32 - Segment, 33 - Hollow structure, 34 - Reinforcing structure. 35 - Concave-convex structure. Specific embodiments

[0041] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0042] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate 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 embodiments.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0044] The wastewater treatment device in one embodiment includes, as Figure 1 shown in the aeration disc 1. An air inlet pipe 2 is provided at the lower end of the aeration disc 1. A saddle 4 is provided on the aeration cross pipe 3, and the saddle 4 is connected to the air inlet pipe 2 to realize the connection between the aeration disc 1 and the aeration cross pipe 3. Specifically, the aeration disc 1 includes an air distribution base 10, an aeration diaphragm 20, and an annular pressing member 30.

[0045] Please refer to Figure 2, the air distribution base 10 includes a base body 11 and a pressing portion 12 provided on the periphery of the base body 11. A pressing space 13 is formed between the pressing portion 12 and the base body 11. The aeration diaphragm 20 is provided on the base body 11, and the periphery of the aeration diaphragm 20 extends into the pressing space 13. The pressing member 30 compresses the aeration diaphragm 20 and is installed in the pressing space 13. After being in place, the pressing member 30 is located between the aeration diaphragm 20 and the pressing portion 12, and the pressing member 30 seals and presses the periphery of the aeration diaphragm 20 against the base body 11.

[0046] In an embodiment, a sealing convex ring 111 is provided on the base body 11. The sealing convex ring 111 is located in the pressing space 13, and the periphery of the aeration diaphragm 20 is provided on the sealing convex ring 111. After the pressing member 30 is installed in the pressing space 13, the aeration diaphragm 20 is compressed between the sealing convex ring 111 and the pressing member 30, and the sealing convex ring 111 plays a sealing role to prevent gas from escaping between the aeration diaphragm 20 and the base body 11.

[0047] In an embodiment, a protruding anchoring edge 21 is provided in the area of the aeration diaphragm 20 located in the pressing space 13, and the base body 11 is provided with a receiving groove 112 for receiving the anchoring edge 21. Among them, the anchoring edge 21 is clamped in the receiving groove 112, which can prevent the aeration diaphragm 20 from loosening during aeration.

[0048] As Figure 3 shown, further, since the material of the aeration diaphragm 20 can also be made of a sealing material, the functions of the anchoring edge 21 and the sealing convex ring 111 can be combined into one. At this time, there is no need to design the sealing convex ring 111, and the anchoring edge 21 can be used as the sealing structure. At this time, the contact end of the anchoring edge 21 and the base body 11 should be in an arc curve contact for better sealing effect.

[0049] In an embodiment, the pressing portion 12 includes an extending portion 121 and a clamping portion 122. The extending portion 121 is connected to the base body 11, the clamping portion 122 is connected to the extending portion 121, and the clamping portion 122 and the base body 11 partially overlap, so that a pressing space 13 is formed between the pressing portion 12 and the base body 11.

[0050] In an embodiment, the base body 11 is generally a flat plate structure, the extending portion 121 is perpendicular to the base body 11, and the clamping portion 122 extends toward the middle of the base body 11, so that the opening 132 of the pressing space 13 is horizontally arranged. At this time, the pressing member 30 is horizontally loaded into the pressing space 13, the aeration diaphragm 20 is better stressed and has a long service life.

[0051] Please refer to Figure 4, in another embodiment, the peripheral edge of the base body 11 is turned downward to form a flanging 113, and the pressing portion 12 is connected to the flanging 113. Specifically, the extending portion 121 is perpendicular to the flanging 113, and the engaging portion 122 extends upward, so that the opening 132 of the pressing space 13 is vertically arranged. Since the opening 132 is designed to face upward, the pressing member 30 can be directly pressed downward integrally from above, and the pressing member 30 may not be designed with a notch 31 or not designed as multiple segments, which is convenient for the installation of the pressing member 30.

[0052] In one embodiment, since the air distribution base 10 has a pressing portion 12, the air distribution base 10 has a structure with a large cavity in the middle, which is not convenient for the demolding of the air distribution base 10. Therefore, the pressing portion 12 of the air distribution base 10 and the base body 11 are of a split structure, and the two are respectively manufactured by molds, and then the pressing portion 12 and the base body 11 are detachably connected.

[0053] Please refer to Figures 5 to 8 , in one embodiment, a plurality of mounting holes 14 can be designed on the base body 11. The mounting holes 14 include large holes 141 and small holes 142 with different diameters along the circumferential direction. Among them, the bottom surface of the small hole 142 has a guiding inclined surface 143, and the guiding inclined surface 143 gradually extends downward in a direction away from the large hole 141.

[0054] A plug rod 144 is designed at the bottom of the pressing portion 12, and a clamping joint 145 with an increased diameter is designed at the end of the plug rod 144. When the pressing portion 12 and the base body 11 are installed, the plug rod 144 is inserted through the large hole 141 of the mounting hole 14, and the clamping joint 145 at the end of the plug rod 144 extends out of the base body 11. Then, the pressing portion 12 is rotated. During the process that the plug rod 144 enters the small hole 142, the clamping joint 145 slides along the guiding inclined surface 143 of the small hole 142, and the clamping joint 145 of the plug rod 144 is clamped with the guiding inclined surface 143 of the small hole 142.

[0055] In order to prevent the plug rod 144 from withdrawing from the small hole 142 of the mounting hole 14, a laterally designed jack can be designed on the base body 11. After the plug rod 144 enters the small hole 142 of the mounting hole 14, a pin rod 146 is inserted into the jack and inserted into the plug rod 144 to realize the locking of the pressing portion 12. Among them, a deformation groove can be designed at one end of the pin rod 146, so that the end of the pin rod 146 can be compressed and deformed to pass through the jack and the plug rod 144, and then expand and be clamped.

[0056] Please refer to Figure 9, in another embodiment, the pressing portion 12 and the base body 11 at least partially overlap axially. The pressing portion 12 and the base body 11 are provided with pin holes in the overlapping portion, and the positioning pin 15 is inserted into the pin holes to detachably connect the pressing portion 12 and the base. Among them, one end of the positioning pin 15 can be designed with a deformation groove so that the end of the positioning pin 15 can be compressed and deformed to pass through the pin hole, and the end of the positioning pin 15 expands and is clamped after passing through the pin hole.

[0057] Please refer to Figure 10 , or, an external thread can be designed on the base body 11, and an internal thread can be designed on the pressing portion 12, and the pressing portion 12 and the base body 11 are threadedly connected. Due to the threaded connection between the pressing portion 12 and the base body 11, only the two need to be tightened, so there is no need for a large screwing force, and the thread damage can be avoided. At the same time, since the fastening force between the base body 11 and the pressing portion 12 is not large, it will not cause the force on the thread to far exceed the elastic deformation range, resulting in creep deformation of the thread teeth.

[0058] In one embodiment, the pressing portion 12 and / or the base body 11 are provided with disassembly holes 123. That is, the disassembly holes 123 can be designed on the pressing portion 12, or on the base body 11, or on both the pressing portion 12 and the base body 11.

[0059] Please refer to Figure 3 , when the pressing portion 12 and the base body 11 are of an integrally formed structure, the disassembly hole 123 communicates with the pressing space 13. The disassembly hole 123 can be designed on the pressing portion 12. For example, the disassembly hole 123 is provided on the extension portion 121. Of course, the disassembly hole 123 can also be designed on the base body 11. When disassembling the aeration diaphragm 20, a disassembly rod can be inserted through the disassembly hole 123 to eject the pressing member 30 from the pressing space 13.

[0060] Please refer to Figure 8 , when the pressing portion 12 and the base body 11 are of a split structure, there is no need to design disassembly holes 123 for the threaded connection and pin connection methods. When the pressing portion 12 and the base body 11 are clamped by screwing, disassembly holes 123 are designed on both the pressing portion 12 and the base body 11, and one or more groups of disassembly holes 123 can be designed according to needs. When disassembling the pressing portion 12 and the base body 11, the pin rod 146 is removed, and two disassembly rods are respectively inserted into the upper and lower disassembly holes 123, and the two disassembly rods are pushed in opposite directions, and the pressing portion 12 and the base body 11 will rotate relative to each other to realize the disassembly of the pressing portion 12 and the base body 11.

[0061] In one embodiment, when the pressing part 12 and the base body 11 are of a split structure, since the pressing member 30 can be directly placed on the aeration diaphragm 20 from top to bottom and then the pressing part 12 is installed, the pressing part 12 does not affect the installation of the pressing member 30. Therefore, the pressing member 30 can be made of a rigid integral circular ring. Of course, the pressing member 30 can also be designed as a multi-segment assembled structure according to needs.

[0062] Please refer to Figure 11 , in one embodiment, when the pressing part 12 and the base body 11 are of an integrally formed structure, and the pressing member 30 is of an integral structure and the material hardness is relatively high and cannot be bent on a large scale. The pressing member 30 is provided with a plurality of notches 31 that enable the pressing member 30 to be bent, facilitating the installation of the annular pressing member 30 into the pressing space 13. Among them, the notches 31 can be provided on the inner wall of the pressing member 30 or can be provided on the outer wall of the pressing member 30 along the radial direction, as long as the thickness of the pressing member 30 can be thinned and bent.

[0063] Please refer to Figure 12 , in another embodiment, when the pressing part 12 and the base body 11 are of an integrally formed structure, the pressing member 30 is of an integral structure and the material hardness can meet a certain degree of bending, the pressing member 30 can be made into a strip that can be bent and deformed, and the pressing member 30 is bent along the circumferential direction to form a ring. Of course, the pressing member 30 can also be a closed ring, that is, the pressing member 30 is an integral circular ring, and the pressing member 30 is squeezed into the pressing space 13 by a pressure pliers or a hydraulic device.

[0064] As Figure 13 shown, when the pressing part 12 and the base body 11 are of an integrally formed structure and the material hardness of the pressing member 30 is relatively high and cannot be bent on a large scale, the pressing member 30 can adopt a split structure. Specifically, the pressing member 30 includes a plurality of arc-shaped segments 32, and the plurality of segments 32 are sequentially assembled along the circumferential direction to form an annular pressing member 30, realizing the installation of the pressing member 30 into the pressing space 13. At this time, it is necessary to control the gap between the plurality of segments 32 to be less than 1 mm so as not to affect the sealing effect at the joint.

[0065] Please refer to Figure 14 , in one embodiment, the pressing member 30 is provided with a hollow structure 33, and the hollow structure 33 can reduce the weight of the pressing member 30 and reduce the cost. Or, the pressing member 30 can also be provided with a reinforcing structure 34, and the pressing member 30 is made of an inner and outer composite material to meet the hardness and strength requirements. The pressing member 30 is provided with a concave-convex structure 35, and the concave-convex structure 35 can increase the pressure of the pressing member 30 on the aeration diaphragm 20, ensuring that the pressing member 30 seals the peripheries of the aeration diaphragm 20 and the base body 11. In order to facilitate the extrusion of the pressing member 30 into the pressing space 13, the cross-sectional shape of the pressing member 30 is preferably made into an upper arc, a lower arc, upper and lower arcs, a multi-sided arc, a rectangle (chamfered rectangle), a circle, etc.

[0066] In one embodiment, the aeration diaphragm 20 can be made of a single material such as ethylene propylene diene monomer rubber and silicone rubber, etc., or can be made of a composite material such as PTFE-coated rubber, etc. Other components of the aeration disk 1 are preferably made of high molecular materials such as ABS, PE, PP, and fiberglass.

[0067] For the above wastewater treatment device and its aeration disk 1, the aeration disk 1 is made of high molecular materials, which is corrosion-resistant and has a long service life. The aeration diaphragm 20 belongs to a structure prone to blockage and fouling. When the aeration diaphragm 20 needs to be disassembled, the pressing member 30 is taken out from the pressing space 13, and then the replacement of the aeration diaphragm 20 can be carried out. The above wastewater treatment device and its aeration disk 1 can realize the replacement and reuse of the aeration diaphragm 20, reducing the equipment depreciation cost. There is no damage to the materials during the disassembly and assembly process, greatly prolonging the service life.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. An aeration disc, characterized in that, Comprising: An air distribution base, including a base body and a pressing portion provided at the periphery of the base body, a pressing space being formed between the pressing portion and the base body; An aeration diaphragm, provided on the base body, and the periphery of the aeration diaphragm extending into the pressing space; and An annular pressing member, the pressing member compressing the aeration diaphragm and installing it in the pressing space, the pressing member sealingly pressing the periphery of the aeration diaphragm against the base body.

2. The aeration disc according to claim 1, wherein A sealing convex ring is provided on the base body, the sealing convex ring is located in the pressing space, and the periphery of the aeration diaphragm is provided on the sealing convex ring.

3. The aeration disk according to claim 1, characterized in that, The area of the aeration diaphragm located in the pressing space is provided with a protruding anchoring edge, and the base body is provided with a receiving groove for receiving the anchoring edge.

4. The aeration disc according to claim 1, wherein The pressing member is an integral circular ring; Or the pressing member is an integral circular ring, and the pressing member is provided with a plurality of notches enabling the pressing member to be bent; Or the pressing member includes a plurality of segments, and the plurality of segments are sequentially spliced along the circumferential direction to form the pressing member; Or the pressing member is a strip capable of bending and deforming, and the pressing member is bent along the circumferential direction to form a ring.

5. The aeration disc according to claim 1, characterized in that, The pressing member is provided with a concavo-convex structure, a hollow structure or a reinforcing structure.

6. The aeration disc according to claim 1, wherein The pressing portion and / or the base body is provided with a disassembly hole.

7. The aeration disc according to claim 1, characterized in that, The base body is a flat plate structure, and the opening of the pressing space is horizontally arranged; or The periphery of the base body is turned downwards to form a flanging, the pressing portion is connected to the flanging, and the opening of the pressing space is vertically arranged.

8. The aeration disk according to claim 1, characterized in that The pressing portion and the base body are of a split structure, and the pressing portion and the base body are detachably connected.

9. The aeration disc according to claim 2, wherein, The pressing portion and the base body are connected by snap connection, pin connection or screw connection.

10. A wastewater processor, characterized in that, Comprising: The aeration disc according to any one of claims 1-9.

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