Biochemical pool on-line replacement aeration system for water pollution treatment

Abstract

The present application relates to a kind of water pollution treatment's biochemical pool on-line replacement aeration system, including multiple aeration hose being spaced apart along the width direction of pool body, the left end of aeration hose is connected with the air supply branch pipe being detachably connected, the upper end of air supply branch pipe is detachably connected with air supply main pipe, it is characterized in that: on-line replacement aeration system further includes the hose support for being arranged in the lower side of aeration tank pool body, the bottom of hose support is spaced apart with the bottom of aeration tank pool body, support column is fixed on hose support, the upper end of support column is connected to the pool top support on the upper end of aeration tank pool body, hose support is provided with hose limiting group being correspondingly arranged with aeration hose, each hose limiting group includes multiple hose limiters being spaced apart along left and right directions, hose limiter has hose limiting portion for corresponding aeration hose to be moved and installed along left and right directions, the right end of aeration hose is connected between pool top support by pull rope.The present application provides a kind of on-line replacement aeration system, which can complete aeration hose replacement without pool body draining.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewage treatment, and discloses an online replacement aeration system for a biochemical tank for water pollution treatment. BACKGROUND

[0002] In a sewage treatment unit, a biochemical system unit is the most widely used secondary treatment unit. An aeration system in an aeration tank is one of the key devices for aerobic reaction of the biochemical system.

[0003] The aeration system in the prior art comprises a plurality of aeration hoses fixed to the bottom of the aeration tank, the aeration hoses are arranged at intervals along the width direction of the tank body, one end of the aeration hose is connected with a vertical air supply branch pipe, and the upper end of the air supply branch pipe is connected with an air supply pipeline.

[0004] In use, the air supply pipeline supplies air to each aeration hose through each air supply branch pipe, and the air enters the aeration tank through the air holes on the aeration hose, so as to increase the dissolved oxygen content in the aeration tank. The existing technology has the problem that after being used for a period of time, the aeration hose needs to be replaced due to damage, blockage and the like, and the replacement mode of the aeration hose in the prior art is that the sewage treatment plant needs to be shut down, then the water in the aeration tank is discharged, the aeration hose is replaced, and then the water is injected to restore production.

[0005] The traditional aeration hose replacement system needs to shut down the equipment to replace the aeration hose, which affects the sewage treatment efficiency of the sewage treatment plant. SUMMARY

[0006] The present application aims to provide an online replacement aeration system which can complete replacement of the aeration hose without discharging the water in the tank body.

[0007] To solve the above technical problems, the technical scheme of the online replacement aeration system for the biochemical tank for water pollution treatment in the present application is as follows:

[0008] The online replacement aeration system for the biochemical tank for water pollution treatment comprises a plurality of aeration hoses arranged at intervals along the width direction of the tank body, the left end of the aeration hose is connected with a detachable air supply branch pipe, the upper end of the air supply branch pipe is detachably connected with an air supply main pipe, the online replacement aeration system further comprises a hose support arranged on the lower side of the aeration tank, the bottom of the hose support is arranged at an interval from the bottom of the aeration tank, a support column is fixed on the hose support, the upper end of the support column is connected to the tank top support on the upper end of the aeration tank, a hose limiting group corresponding to the aeration hose is arranged on the hose support, each hose limiting group comprises a plurality of hose limiters arranged at intervals in the left-right direction, the hose limiter has a hose limiting portion for allowing the corresponding aeration hose to move and pass through in the left-right direction, and the right end of the aeration hose is connected to the tank top support through a pull rope.

[0009] Further, the hose support includes a unit frame extending in length along a left-right direction and in width along a front-rear direction, support columns are arranged at four corners of the unit frame, a plurality of frame beams extending in length along the front-rear direction are arranged on the unit frame, the frame beams are arranged in the left-right direction at intervals, and the hose stopper is arranged on the corresponding frame beam.

[0010] Further, the hose stopper includes a stopper base and a stop disc arranged on an upper side of the stopper base and extending in axis along the left-right direction, a hose stopper part is arranged on the stop disc, a guide rod guided and moved in the up-down direction with the stopper base is fixed to a bottom of the stop disc, and a guide rod return spring applying a force in the downward direction to the guide rod is arranged between the stopper base and the guide rod.

[0011] Further, at least three hose positioning rods are arranged on the stop disc at intervals in the circumferential direction of the stop disc, the hose positioning rods are connected to the stop disc in a hinged manner, the hose positioning rods are in the form of inclined rods gradually approaching the axis of the stop disc from right to left, the left end of the hose positioning rod has a contact pressing part in contact with and pressing the outer periphery of the aeration hose, the contact pressing parts of the hose positioning rods together form the hose stopper part, a positioning rod spring is arranged between the hose positioning rod and the stop disc to force the left end of the hose positioning rod to approach the axis of the stop disc, and the contact pressing part is located on the inner side of the inner wall of the stop disc.

[0012] Further, the positioning rod spring is a torsion spring arranged between the hose positioning rod and the stop disc.

[0013] Further, the radial gap between the outer periphery of the aeration hose and the inner wall of the stop disc is 5mm-15mm.

[0014] Further, the left end of the hose positioning rod is rotatably assembled with a pressing ball, and the contact point of the pressing ball in point contact with the outer periphery of the aeration hose forms the contact pressing part.

[0015] The beneficial effects of the present application are: in the present application, in normal use, each aeration hose passes through the hose limiting part of the corresponding hose limiter, the aeration hose is positioned on the hose support, the bottom of the hose support is suspended on the upper side of the bottom of the aeration tank body, the aeration hose normally introduces air into the aeration tank, and normally works, when the aeration hose needs to be replaced, the connection between the pull rope and the top support of the tank is released, the upper end of the pull rope is connected with the new aeration hose, the connection between the air supply branch pipe and the air supply main pipe is released, the left end of the aeration hose is pulled through the air supply branch pipe, the aeration hose is integrally moved to the left under the pulling action of the air supply branch pipe, in this way, the new aeration hose is sequentially inserted into each hose limiter of the corresponding set of hose limiting groups from right to left under the pulling action of the pull rope, until the left end of the new aeration hose is pulled out through the leftmost hose limiter and out of the liquid surface, the new aeration hose is connected with the air supply branch pipe and the air supply main pipe again, realizing online replacement of the aeration hose without stopping production. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present disclosure are shown by way of example, and wherein like or corresponding elements refer to like or corresponding parts throughout several views. In the drawings:

[0017] Figure 1 is a use state diagram of one embodiment of the online replacement aeration system of the biochemical tank for water pollution treatment in the present application;

[0018] Figure 2 is a cooperation schematic diagram of the hose limiter, the hose support and the tank body in the side view direction in 1;

[0019] Figure 3 is Figure 1 a top view of a single support unit in 1;

[0020] Figure 4 is Figure 2 a cooperation schematic diagram of a single hose limiter and the aeration hose in 1;

[0021] Figure 5 is Figure 4 a side view of 1;

[0022] Figure 6 is Figure 5 a structural schematic diagram of the hose limiter in 1;

[0023] Figure 7 is a pulling schematic diagram of the aeration hose when the aeration hose is replaced in the present application;

[0024] Figure 8 is Figure 7 a shape schematic diagram of the aeration hose in 1;

[0025] Figure 9 yes Figure 1 Enlarged view of point B in the image;

[0026] 1. Aeration tank body; 2. Air supply branch pipe; 3. Air supply main pipe; 5. Support column; 6. Unit frame; 7. Aeration hose; 8. Pull rope; 9. Hose limiter; 10. Tank top support; 11. Clamp; 12. Hose positioning rod; 13. Limiting plate; 14. Frame beam; 15. Fixed shaft; 16. Pressing ball; 17. Radial clearance; 18. Limiter base; 19. Guide rod return spring; 20. Guide rod; 21. Contact pressing part; 22. New aeration hose. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0028] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0029] An example of an implementation of an online replacement aeration system for a biological treatment pond in this invention. Figures 1-9 As shown:

[0030] Before describing the specific structure of the online replacement aeration system in this invention, a brief structural description of the existing aeration tank is provided. The aeration tank includes a rectangular tank body 1 with a length extending in the left-right direction and a width extending in the front-back direction. A metal roof support 10 is provided at the upper end of the aeration tank body 1. A main air supply pipe 3 is provided at the left end of the aeration tank body 1.

[0031] The online aeration system includes multiple aeration hoses 7 spaced apart along the width of the aeration tank (front-to-back direction). Each aeration hose 7 extends horizontally. The left end of each aeration hose 7 is detachably connected to an air supply branch pipe 2 via a clamp 11. The upper end of the air supply branch pipe 2 is vertically oriented and detachably connected to the main air supply pipe 3 via a flange. All of the above is prior art and will not be described in detail here.

[0032] The online replacement aeration system further comprises a hose support arranged at the lower side of the aeration tank body, the bottom of the hose support is spaced apart from the bottom of the aeration tank body, a support column 5 is fixed on the hose support, and the upper end of the support column 5 is connected to the tank top support 10 at the upper end of the aeration tank body by means of bolts (or welding).

[0033] In the embodiment, the hose support comprises a unit frame 6 extending in the left-right direction and having a width extending in the front-rear direction, the support column 5 is arranged at the four corners of the unit frame 6, a plurality of frame beams 14 extending in the front-rear direction are arranged on the unit frame 6, each frame beam 14 is spaced apart in the left-right direction, and the hose stopper 9 is arranged on the corresponding frame beam 14. The four support columns are fixed at the four corners of the unit frame.

[0034] The hose support is provided with a plurality of hose stopper groups corresponding to the aeration hoses, each hose stopper group comprises a plurality of hose stoppers 9 spaced apart in the left-right direction, the hose stopper 9 has a hose stopper portion for allowing the corresponding aeration hose to move and pass through in the left-right direction, and the right end of the aeration hose is connected to the tank top support by means of the pull rope 8. In the embodiment, the aeration hose before replacement is referred to as an old aeration hose, the pull rope connected to the right end of the old aeration hose is referred to as an old pull rope, the aeration hose after replacement is referred to as a new aeration hose 22, and the pull rope connected to the right end of the new aeration hose is referred to as a new pull rope.

[0035] In the embodiment, the hose stopper 9 in each hose stopper group is arranged on the corresponding support unit 4, specifically, the hose stopper 9 is arranged on the frame beam 14 of the corresponding support unit.

[0036] In the embodiment, the hose stopper comprises a stopper base 18 and a stopper disc 13 arranged on the upper side of the stopper base 18 and extending along the left-right direction, the hose stopper portion is arranged on the stopper disc 13, the bottom of the stopper disc is fixed with a guide rod 20 guided and moved in the up-down direction with the stopper base, and a guide rod return spring 19 is arranged between the stopper base and the guide rod to apply a downward force to the guide rod. The guide rod return spring 19 is arranged between the guide rod 20 and the stopper base 18, and the guide rod return spring 19 is a vertically arranged compression spring.

[0037] The stopper disc is a hollow structure extending along the left-right direction, the stopper disc is provided with three hose positioning rods 12 uniformly and spaced apart in the circumferential direction of the stopper disc, each hose positioning rod 12 is connected to the stopper disc 13 by hinging, and specifically, the stopper disc 13 is provided with a fixed shaft 15, and the hose positioning rod 12 is rotatably assembled on the fixed shaft 15.

[0038] The soft tube positioning rod 12 is a slanted rod structure gradually approaching the limiting disc axis direction from right to left, the left end of the soft tube positioning rod 12 has a contact pressing part 21 in contact and pressing with the outer periphery of the aeration soft tube, the contact pressing parts 21 of the soft tube positioning rods together constitute the soft tube limiting part, the soft tube positioning rod and the limiting disc are provided with a positioning rod spring forcing the left end of the soft tube positioning rod to approach the limiting disc axis, and the contact pressing part is located inside the inner wall of the limiting disc. In this embodiment, the positioning rod spring is a torsion spring (not shown in the figure) provided between the soft tube positioning rod and the fixed shaft.

[0039] The radial gap 17 between the outer periphery of the aeration soft tube and the inner wall of the limiting disc is 10 mm, in other embodiments of the present application, the radial gap between the outer periphery of the aeration soft tube and the inner wall of the limiting disc can also be 5 mm, 15 mm or other values between 5-15 mm.

[0040] The left end of the soft tube positioning rod is rotatably assembled with a pressing ball 16, the contact point of the pressing ball 16 in point contact with the outer periphery of the aeration soft tube constitutes the contact pressing part 21.

[0041] In the normal aeration process, the aeration soft tube is coaxially arranged with the limiting disc 13 under the clamping action of the soft tube positioning rods, the pressing ball 16 is in point contact with the aeration soft tube 7, so that the soft tube positioning rod 12 has very small blocking to the aeration holes on the aeration soft tube, and the aeration soft tube 7 can normally work.

[0042] When the aeration soft tube needs to be replaced, the aeration soft tube needs to be pulled to the left through the air supply soft tube, in the long-term use process, the outer periphery of the aeration soft tube will adhere to the sludge, if the outer diameter of the aeration soft tube is consistent with the inner diameter of the limiting disc, it will cause the moving resistance of the aeration soft tube to be very large, which will cause the aeration soft tube to be difficult to replace; in addition, another position will also affect the replacement of the aeration soft tube, that is, in normal use, the aeration soft tube is perpendicular to the air supply branch pipe, this right angle position will also cause the aeration soft tube to be particularly difficult to pull.

[0043] To this end, the present application reduces the resistance of the aeration hose during the pulling process by the following means, so as to facilitate the pulling of the aeration hose. Specifically, in the present application, the hose positioning rod is in contact with the aeration hose through the pressing ball, when the aeration hose moves to the left, the aeration hose and the pressing ball roll together, and the resistance of the aeration hose is very small; the aeration hose may be attached with sludge, which causes the outer diameter of the aeration hose to increase, in the present application, there is a radial gap between the inner wall of the limiting disc and the aeration hose, so that the aeration hose with increased diameter can easily pass through the inner hole of the limiting disc, when the sludge reaches the hose positioning rod, the hose positioning rod also avoids the sludge by rotating, thereby reducing the moving resistance of the aeration hose when moving to the left. In addition, in the present application, the limiting disc can float up and down, when the aeration hose is pulled to the left, the height of the corresponding limiting disc will rise upwards, the pulling rope pulls the new aeration hose into the pool body, for a hose limiting group, the height of the limiting disc in the middle position is the lowest, and the height of the limiting disc at both ends is the highest, the limiting disc realizes the adjustment of the aeration hose pulling angle through displacement, and the radial gap between the aeration hose and the limiting disc further matches the bending angle of the aeration hose when being pulled through the swinging angle of the upper hose positioning rod. Finally, the aeration hose is in the state as shown in the figure when being pulled, the aeration hose is easier to be pulled, and the replacement of the aeration hose is more convenient and fast. Figure 8

[0044] In the present application, the replacement method of the aeration hose is:

[0045] S1, disconnect the connection between the air supply branch pipe and the air supply main pipe of the on-line replacement aeration system, disconnect the connection between the pulling rope and the pool top support, connect the new aeration hose to the upper end of the old pulling rope, and connect the right end of the new aeration hose with the new pulling rope;

[0046] S2, pull the corresponding old aeration hose to the left through the air supply branch pipe, the right end of the old aeration hose pulls the left end of the new aeration hose into the liquid surface of the aeration pool body, and the new aeration hose is sequentially installed in the hose limiting part of each hose limiter of the corresponding hose limiting group from right to left;

[0047] S3, until the right end of the old aeration hose is pulled out of the liquid surface of the aeration pool body, the left end of the new aeration hose is pulled out of the liquid surface of the aeration pool body, then the connection between the old aeration hose and the air supply branch pipe is disconnected, and the left end of the new aeration hose is connected with the air supply branch pipe;

[0048] S4, pull the new pulling rope to the right until the left end of the aeration hose is pulled below the liquid surface of the pool body, the right end of the aeration hose is in the hose limiting part of the rightmost hose limiter of the corresponding hose limiting group, the upper end of the new pulling rope is connected to the pool top support, the air supply branch pipe is connected with the air supply main pipe, and the on-line replacement of the aeration hose is completed.​

[0049] The new aeration hose is not related to the water or sludge during the installation process, because after aeration, the water and sludge will be automatically discharged. Of course, in order to reduce the water or sludge entering the new aeration hose during the replacement process, a plug can also be used to plug the end of the new aeration hose during the replacement process. Before the new aeration hose is connected to the air supply branch pipe, the plug at the left end of the new aeration hose is removed.

[0050] In the above description of the present specification, unless otherwise explicitly specified and limited, the terms "fixed", "mounted", "connected" or "linked" and the like should be understood in a broad sense. For example, as to the term "connected", it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium, or it can be internal communication of two elements or interaction relationship between two elements. Therefore, unless otherwise explicitly limited in the present specification, the above terms can be understood in the specific meaning in the present application by the person skilled in the art according to the specific circumstances.

[0051] According to the above description of the present specification, the person skilled in the art can also understand that the terms used according to the above description of the present specification, such as "upper", "lower", "front", "rear", "left", "right", "length", "width", "thickness", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", "center", "longitudinal", "transverse", "clockwise" or "counterclockwise" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings of the present specification, which is only for the purpose of facilitating the description of the present application and simplifying the description, and is not explicitly or implicitly indicated that the device or element involved must have the said specific orientation, be constructed and operated in the specific orientation, therefore the above orientation or positional relationship terms cannot be understood or interpreted as a limitation on the present application.

[0052] In addition, the terms "first" or "second" and the like used in the present specification are terms used to refer to numbers or ordinal numbers only for the purpose of description, and cannot be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" or "second" can explicitly or implicitly include at least one of the features. In the description of the present specification, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise explicitly specified and limited.

[0053] It should be pointed out finally that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the same; and although the present application has been described in detail with reference to the foregoing embodiments, it should be appreciated by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A biochemical pool on-line replacement aeration system for water pollution treatment, comprising a plurality of aeration hoses arranged at intervals along the width direction of the pool body, the left end of the aeration hose being connected with a detachable air supply branch pipe, the upper end of the air supply branch pipe being detachably connected with an air supply main pipe, characterized in that: The online replacement aeration system also comprises a hose support arranged at the lower side of the aeration tank body, the bottom of the hose support is arranged in a spaced manner with the bottom of the aeration tank body, a support column is fixed on the hose support, the upper end of the support column is connected to the tank top support at the upper end of the aeration tank body, the hose support is provided with hose limiting groups arranged in a corresponding manner with the aeration hose, each hose limiting group comprises a plurality of hose limiters arranged in a spaced manner along the left-right direction, the hose limiters have hose limiting portions for the corresponding aeration hose to move and pass through along the left-right direction, the right end of the aeration hose is connected to the tank top support through a pull rope, The hose limiter comprises a limiter base and a limiting disc arranged at the upper side of the limiter base and extending along the left-right direction, the hose limiting portion is arranged on the limiting disc, the bottom of the limiting disc is fixed with a guide rod guided and moved in a cooperative manner with the limiter base in the up-down direction, a guide rod return spring is arranged between the limiter base and the guide rod to exert a downward force on the guide rod, The limiting disc is provided with at least three hose positioning rods arranged in a spaced manner along the circumference of the limiting disc, each hose positioning rod is hingedly connected to the limiting disc, each hose positioning rod is in the form of an inclined rod structure gradually approaching the axis direction of the limiting disc from right to left, the left end of the hose positioning rod has a contact pressing portion in contact and pressing cooperation with the outer periphery of the aeration hose, the contact pressing portions of each hose positioning rod together constitute the hose limiting portion, a positioning rod spring is arranged between the hose positioning rod and the limiting disc to force the left end of the hose positioning rod to approach the axis of the limiting disc, the contact pressing portion is located on the inner side of the inner wall of the limiting disc, the left end of the hose positioning rod is rotatably assembled with a pressing ball, the contact point of the pressing ball in point contact with the outer periphery of the aeration hose constitutes the contact pressing portion.

2. The online replacement aeration system of claim 1, wherein: The hose support comprises a unit frame extending in the left-right direction in length and extending in the front-back direction in width, the support column is arranged at the four corners of the unit frame, a plurality of frame beams extending in the front-back direction in length are arranged on the unit frame, each frame beam is arranged in a spaced manner along the left-right direction, and the hose limiter is arranged on the corresponding frame beam.

3. The online replacement aeration system of claim 1, wherein: The positioning rod spring is a torsion spring arranged between the hose positioning rod and the limiting disc.

4. The online replacement aeration system of claim 1, wherein: The radial gap between the outer periphery of the aeration hose and the inner wall of the limiting disc is 5mm-15mm.

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