Water pollution treatment device

Abstract

The present application relates to a kind of sewage treatment devices, including aeration tank, with the center line of the length direction of pool body as standard line, the hose positioner located in the front side of the standard line is front hose positioner, the hose positioner located in the rear side of the standard line is rear hose positioner, each hose positioner includes positioner base and support plate connected with positioner base by hinged structure, the upper side of each support plate is provided with two limiting rings, two limiting rings are front limiting ring and rear limiting ring arranged in front and back, limiting ring has the hose perforation for aeration hose to adapt to pass through, limiting ring base is provided with front reset spring and rear reset spring between support plate, located in the front and rear of hinged structure.The present application solves the technical problem that the reset spring of guide rod in prior art is designed with small elastic force, which can lead to aeration hose floating wear during work, and the reset spring of guide rod is designed with large elastic force, which can lead to aeration hose replacement with large pulling resistance.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a water pollution treatment device using a biological treatment tank. Background Technology

[0002] In the field of wastewater treatment, the secondary treatment unit is widely used in the biological system unit chamber, and the aeration system in the aeration tank is one of the key equipment for the aerobic reaction of the biological system.

[0003] Existing water pollution treatment devices, such as the "Online Replacement Aeration System for a Biochemical Tank for Water Pollution Treatment" disclosed in Chinese Patent CN120664710B, include an aeration tank with a tank body, and multiple aeration hoses spaced apart along the width of the tank body. The left end of each aeration hose is detachably connected to an air supply branch pipe, and the upper end of the air supply branch pipe is detachably connected to the main air supply pipe. The aeration tank also includes a hose support for installation on 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 is fixed on the hose support, and 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 corresponding to the aeration hoses. Each hose limiting group includes multiple hose limiters spaced apart along the left and right directions. Each hose limiter has a hose limiting part for the corresponding aeration hose to move and pass through in the left and right directions. The right end of the aeration hose is connected to the tank top support by a pull rope.

[0004] The hose limiter includes a limiter base and a limiter plate whose axis extends in the left-right direction and is located on the upper side of the limiter base. The hose limiting part is located on the limiter plate. A guide rod is fixed at the bottom of the limiter plate and cooperates with the limiter base to guide the movement in the up-down direction. A guide rod return spring is provided between the limiter base and the guide rod to apply a downward force to the guide rod.

[0005] During use, each aeration hose passes through the hose limiting part of the corresponding hose limiter, and the aeration hose is positioned on the hose support. The aeration hose normally supplies air into the aeration tank and works normally. When it is necessary to replace the aeration hose, disconnect the connection between the pull rope and the tank top support, connect the upper end of the pull rope to the new aeration hose, disconnect the connection between the air supply branch pipe and the air supply main pipe, and pull the left end of the aeration hose through the air supply branch pipe. Under the pulling action of the air supply branch pipe, the aeration hose moves to the left as a whole. In this way, under the pulling action of the pull rope, the new aeration hose passes through each hose limiter of the corresponding set of hose limiting groups in order from right to left, until the left end of the new aeration hose is pulled out through the leftmost hose limiter and emerges from the liquid surface. The new aeration hose is then connected to the air supply main pipe through the air supply branch pipe, realizing the online replacement of aeration hoses without stopping production.

[0006] The problem with existing technology is that, during aeration hose replacement, to reduce the pulling resistance of the aeration hose, it is necessary to overcome the force of the guide rod return spring. This is achieved by the up-and-down movement of the limiting plate, making the aeration hose form an upward-facing U-shaped structure. However, there is an engineering contradiction regarding the preload of the guide rod return spring. If the spring force is too small, during normal aeration, the hose is filled with compressed air, resulting in significant buoyancy. If the spring force is too low, the limiting plate will float up and down under the buoyancy, leading to unstable aeration and excessive wear on the aeration hose and its moving parts. Therefore, the spring force of the guide rod return spring needs to be designed to be larger. However, if the spring force is too large, multiple guide rod return springs need to be overcome to achieve the overall shape change of the aeration hose during online hose replacement, significantly increasing the pulling resistance by manpower or winches. Summary of the Invention

[0007] The purpose of this invention is to provide a water pollution treatment device that solves the technical problems in the prior art where a small spring force of the guide rod return spring leads to floating wear of the aeration hose during operation, and a large spring force of the guide rod return spring leads to large pulling resistance when replacing the aeration hose.

[0008] The technical solution of the present invention is as follows:

[0009] A wastewater treatment device includes an aeration tank, which comprises a tank body extending laterally in width and longitudinally in length. It also includes a hose support and multiple aeration hoses spaced apart along the width of the tank body. The hose support is equipped with hose limiting groups corresponding to the aeration hoses. Each hose limiting group includes multiple hose limiters spaced apart along the longitudinal direction. Using the centerline of the tank body's length as a reference line, the hose limiters located before the reference line are designated as front hose limiters, and the hose limiters located after the reference line are designated as rear hose limiters. Each hose limiter includes a limiter base and a support hinged to the limiter base via a hinged structure. The axis of the hinged structure extends in the left-right direction. Each support plate has two limiting rings on its upper side. The two limiting rings are a front limiting ring and a rear limiting ring arranged at an interval. The limiting rings have hose through holes for the aeration hose to pass through. Between the limiter base and the support plate, there are front return springs and rear return springs located on the front and rear sides of the hinged structure to return the support plate to a horizontal position. For the front hose limiter, the lever arm of the front limiting ring from the hinged structure is greater than that of the rear limiting ring from the hinged structure; for the rear hose limiter, the lever arm of the rear limiting ring from the hinged structure is greater than that of the front limiting ring from the hinged structure.

[0010] Furthermore, both the front and rear return springs are compression springs.

[0011] Furthermore, when the aeration hose is not inserted into the corresponding limiting ring, the support plate is in a horizontal state due to the action of the front and rear reset springs; after the aeration hose is inserted into the corresponding limiting ring, the aeration hose aerates, and the support plate is in a horizontal state.

[0012] Furthermore, the limiting ring includes a tapered guide sleeve whose diameter gradually decreases from back to front, and the small diameter end of the tapered guide sleeve is adapted to the outer diameter of the aeration hose.

[0013] Furthermore, for each front hose limiter, the hose limiter located further forward is referred to as the first hose limiter, and the hose limiter located further backward is referred to as the second hose limiter. The lever arm ratio of the front limiting ring and the rear limiting ring of the first hose limiter is greater than that of the front limiting ring and the rear limiting ring of the second hose limiter.

[0014] Furthermore, for each rear hose limiter, the hose limiter located further forward is referred to as the first hose limiter, and the hose limiter located further backward is referred to as the second hose limiter. The lever arm ratio of the rear limit ring and the front limit ring of the second hose limiter is greater than that of the rear limit ring and the front limit ring of the first hose limiter.

[0015] Furthermore, for the front hose limiter, the bottom of the rear return spring is connected to the first pin extending along the left and right direction. The limiter base is provided with a first pin guide hole for the first pin to move vertically. The upper end of the first pin guide hole is provided with a first pin C-shaped retaining ring with the opening facing downward. After the first pin C-shaped retaining ring expands, the first pin can pass through the opening of the first pin C-shaped retaining ring.

[0016] Furthermore, for the rear hose limiter, the bottom of the front return spring is connected to the second pin extending along the left and right direction. The limiter base is provided with a second pin guide hole for the second pin to move vertically. The upper end of the second pin guide hole is provided with a second pin C-shaped retaining ring with the opening facing downward. After the second pin C-shaped retaining ring expands, the second pin can pass through the opening of the second pin C-shaped retaining ring.

[0017] The beneficial effects of this application are as follows: This invention cleverly utilizes the two postures of the aeration hose—inflated and deflated. When the aeration hose is inflated, under air pressure, the overall rigidity of the aeration hose is strong, and it is basically in a horizontal and difficult-to-bend posture. When the aeration hose is deflated, it is in a flexible posture that is easy to bend. In this invention, when the aeration hose is in the inflated state, the aeration hose as a whole applies an upward force to the front and rear limiting rings of the hose limiter. This upward force is mainly borne by the hinge structure and transmitted to the limiter base. The front and rear return springs are only used to support the flipping and resetting of the support plate, and do not bear the buoyancy of the aeration hose. Even if the elasticity of the front and rear return springs is small, it will not cause the aeration hose to easily float up and down due to force. When the aeration hose needs to be replaced, the aeration hose is deflated, at which time the aeration hose is in a flexible posture that is easy to bend. With the aeration hose fully extended and the front end pulled upwards, for each of the front hose limiters in front of the standard line, the lever arm of the front limit ring from the hinge structure is greater than that of the rear limit ring from the hinge structure. Therefore, due to the pulling effect of the aeration hose, the support plate tends to tilt in a front-high, rear-low position. Similarly, for each of the rear hose limiters behind the standard line, the pulling effect of the aeration hose tends to cause the support plate to tilt in a rear-high, front-low position. This results in the entire aeration hose forming a U-shaped structure with the notch facing upwards, facilitating the extraction of the aeration hose. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the front hose limiter in this invention; Figure 3 This is a schematic diagram of the structure of the rear hose limiter in this invention; Figure 4 This is a side view of the limiting ring in this invention; Figure 5 yes Figure 2 Enlarged view of point A; In the diagram: 1. Main air supply pipe; 2. Branch air supply pipe; 3. Pool body; 4. Support column; 5. Front limiting ring; 6. Rear limiting ring; 7. Aeration hose; 8. Front hose limiter; 9. Rear hose limiter; 10. Pull rope; 11. Standard line; 12. Hose support; 13. Support base; 14. Conical guide sleeve; 14-1. Small diameter end of conical guide sleeve; 15. Support plate; 16. Front return spring; 17. Rear return spring; 18. Hinge structure; 19. Limiter base; 20. First pin; 21. First pin C-shaped retaining ring; 22. First pin guide hole; 23. Opening of the first pin C-shaped retaining ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0023] A specific embodiment of a water pollution treatment device of the present invention is as follows: Figures 1-5 As shown,

[0024] It includes an aeration tank, which includes a tank body 3 with a width extending in the left-right direction and a length extending in the front-back direction. A flexible hose support 12 is connected to the tank body. The flexible hose support includes a support base 13. The support base is hung on the tank body through a support column 4. The support base is arranged at intervals with the bottom of the tank body, and the sludge is concentrated on the lower side of the support base.

[0025] It also includes multiple aeration hoses 7 spaced apart along the width of the pool. The support base of the hose bracket is provided with hose limiting groups corresponding to the aeration hoses. Each hose limiting group includes multiple hose limiters spaced apart along the front-back direction.

[0026] The water pollution treatment device also includes a main air supply pipe 1 connected to a blower, with multiple branch air supply pipes 2 connected in parallel to the main air supply pipe. Each branch air supply pipe supplies air to a corresponding aeration hose. The main air supply pipe and the branch air supply pipes are detachably connected, and the bottom of each branch air supply pipe is detachably connected to the front end of the corresponding aeration hose. Each aeration hose has a pull rope 10 connected to its rear end, and the pull rope is connected to the edge of the tank.

[0027] All of the above are existing technologies and will not be described in detail here.

[0028] In this invention, the center line of the pool body along its length is taken as the standard line 11. The hose limiter located in front of the standard line is the front hose limiter 8, and the hose limiter located behind the standard line is the rear hose limiter 9. Each hose limiter includes a limiter base 19 and a support plate 15 that is hinged to the limiter base through a hinge structure 18. The axis of the hinge structure extends in the left and right direction. Two limit rings are provided on the upper side of each support plate. The two limit rings are the front limiter 5 and the rear limiter 6, which are arranged at intervals.

[0029] The limiting ring has a hose through hole for the aeration hose to pass through. In this embodiment, the limiting ring includes a tapered guide sleeve 14 whose diameter gradually decreases from back to front. The diameter of the small diameter end 14-1 of the tapered guide sleeve is adapted to the outer diameter of the aeration hose, which facilitates the aeration hose to pass through the tapered guide sleeve of the limiting ring from right to left.

[0030] Between the limiter base and the support plate, there are front return springs 16 and rear return springs 17 located on the front and rear sides of the hinge structure to return the support plate to a horizontal position. For the front hose limiter, the lever arm of the front limit ring from the hinge structure is greater than that of the rear limit ring from the hinge structure; for the rear hose limiter, the lever arm of the rear limit ring from the hinge structure is greater than that of the front limit ring from the hinge structure.

[0031] In this embodiment, both the front return spring and the rear return spring are compression springs, which can be subjected to both compression and tension.

[0032] When the aeration hose is not inserted into the corresponding limiting ring, the support plate is in a horizontal state due to the resetting action of the front and rear reset springs; after the aeration hose is inserted into the corresponding limiting ring, the aeration hose is inflated for aeration, the aeration hose is in a rigid state that is not easily deformed, and the support plate is in a horizontal state.

[0033] In this invention, for each front hose limiter, the hose limiter positioned further forward is referred to as the first hose limiter, and the hose limiter positioned further backward is referred to as the second hose limiter. The lever arm ratio of the front and rear limiting rings of the first hose limiter is greater than that of the second hose limiter. This is because the further forward the front hose limiter is, the greater the angle at which the support plate needs to tilt when the hose is pulled out and replaced, and the support plate gradually tilts upward from back to front. In this embodiment, the lever arm ratio is an abbreviation for the lever arm ratio value. The lever arm ratio of the front and rear limiting rings of the first hose limiter refers to the ratio of the lever arm length between the front limiting ring and the hinge structure to the lever arm length between the rear limiting ring and the hinge structure.

[0034] In this invention, for each rear hose limiter, the hose limiter located at the front is called the first hose limiter, and the hose limiter located at the rear is called the second hose limiter. The lever arm ratio of the rear limit ring and the front limit ring of the second hose limiter is greater than that of the rear limit ring and the front limit ring of the first hose limiter. This is because the rear hose limiter located further back requires a larger angle of inclination of the support plate when the hose is pulled out and replaced, and the support plate gradually tilts upward from front to back.

[0035] During normal aeration operation, the aeration hose is filled with air for aeration. The aeration hose is in a rigid state that is not easily deformed and is horizontal. Therefore, for each hose limiter, the aeration hose applies an upward force to the support plate through the front limit ring and the rear limit ring. Figure 2 The direction of the arrow indicates the direction of the force exerted by the aeration hose on the support plate. This force is borne by the hinge structure and transmitted to the limiter base. The inner diameter of the small-diameter end of the tapered guide sleeve matches the outer diameter of the aeration hose, so the aeration hose will not float up or down due to buoyancy. The front and rear return springs are not used to restrict the aeration hose from floating upwards, and their elasticity does not need to be too large. When it is necessary to replace the aeration hose, disconnect the air supply to the corresponding aeration hose, connect the new aeration hose to the upper end of the pull rope, and disconnect the corresponding air supply branch pipe from the main air supply pipe. Pulling the air supply branch pipe upwards causes the aeration hose to soften due to the lack of air supply, resulting in deformation. For each hose limiter, the support plates are pulled by the aeration hose, causing them to overturn and deform, disrupting their original balance. Specifically, for the front hose limiter, each support plate gradually tilts upwards from back to front, with the tilt angle increasing towards the front. Similarly, for the rear hose limiter, each support plate gradually tilts upwards from front to back, with the tilt angle increasing towards the rear.

[0036] In this invention, to ensure that the support plates positioned at the front and rear have sufficient tilt angles, taking the front hose limiter as an example, when the tilt angle of the support plate is within a certain value, the first pin 20 will be inside the first pin C-shaped retaining ring 21. When the tilt angle of the support plate exceeds a certain value, the rear return spring is compressed and deformed significantly, and the first pin will push against the opening 23 of the first pin C-shaped retaining ring. The first pin will then disengage from the opening of the first pin C-shaped retaining ring and move downwards along the first pin guide hole 22, thereby increasing the tilt angle limit of the support plate. After replacing the new aeration hose, the aeration hose is inflated horizontally, and the first pin will move upwards to reset and return to the inner hole of the first pin C-shaped retaining ring.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A wastewater treatment device, comprising an aeration tank, the aeration tank including a tank body extending in width along a left-right direction and in length along a front-back direction, and further including a hose support and a plurality of aeration hoses spaced apart along the width direction of the tank body, the hose support being provided with hose limiting groups corresponding to the aeration hoses, each hose limiting group including a plurality of hose limiters spaced apart along the front-back direction, characterized in that: Using the centerline along the length of the pool as the standard line, the hose limiter located in front of this standard line is called the front hose limiter, and the hose limiter located behind this standard line is called the rear hose limiter. Each hose limiter includes a limiter base and a support plate that is hinged to the limiter base via a hinge structure. The axis of the hinge structure extends in the left-right direction. Each support plate has two limit rings on its upper side, which are a front limiter ring and a rear limiter ring arranged at an interval. The limiter rings have hose through holes for the aeration hose to pass through. Between the limiter base and the support plate, there are front return springs and rear return springs located on the front and rear sides of the hinge structure to return the support plate to a horizontal position. For the front hose limiter, the lever arm of the front limiter ring from the hinge structure is greater than that of the rear limiter ring from the hinge structure; for the rear hose limiter, the lever arm of the rear limiter ring from the hinge structure is greater than that of the front limiter ring from the hinge structure.

2. The wastewater treatment device according to claim 1, characterized in that: Both the front and rear return springs are compression springs.

3. The wastewater treatment device according to claim 1, characterized in that: When the aeration hose is not inserted into the corresponding limiting ring, the support plate is in a horizontal state due to the action of the front and rear return springs; after the aeration hose is inserted into the corresponding limiting ring, the aeration hose aerates and the support plate is in a horizontal state.

4. The wastewater treatment device according to claim 1, characterized in that: The limiting ring includes a tapered guide sleeve whose diameter gradually decreases from back to front, and the small diameter end of the tapered guide sleeve is adapted to the outer diameter of the aeration hose.

5. The wastewater treatment device according to claim 1, characterized in that: For each front hose limiter, the hose limiter located further forward is called the first hose limiter, and the hose limiter located further backward is called the second hose limiter. The lever arm ratio of the front limit ring and the rear limit ring of the first hose limiter is greater than that of the front limit ring and the rear limit ring of the second hose limiter.

6. The wastewater treatment device according to claim 5, characterized in that: For each rear hose limiter, the hose limiter located further forward is called the first hose limiter, and the hose limiter located further back is called the second hose limiter. The lever arm ratio of the rear limit ring and the front limit ring of the second hose limiter is greater than that of the rear limit ring and the front limit ring of the first hose limiter.

7. The wastewater treatment apparatus according to any one of claims 1 to 6, characterized in that: For the front hose limiter, the bottom of the rear return spring is connected to the first pin extending along the left and right direction. The limiter base is provided with a first pin guide hole for the first pin to move vertically. The upper end of the first pin guide hole is provided with a first pin C-shaped retaining ring with the opening facing downward. After the first pin C-shaped retaining ring expands, the first pin can pass through the opening of the first pin C-shaped retaining ring.

8. The wastewater treatment apparatus according to any one of claims 1 to 6, characterized in that: For the rear hose limiter, the bottom of the front return spring is connected to the second pin extending along the left and right direction. The limiter base is provided with a second pin guide hole for the second pin to move vertically. The upper end of the second pin guide hole is provided with a second pin C-shaped retaining ring with the opening facing downward. After the second pin C-shaped retaining ring expands, the second pin can pass through the opening of the second pin C-shaped retaining ring.

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