Pulse aeration diffuser structure of short-path nitrification reactor

Abstract

This utility model discloses a pulse aeration diffuser structure for a short-range nitrification reactor, relating to the field of aeration disc technology. The aeration disc includes an air inlet pipe with a sliding plate vertically slidably connected inside. A rotating shaft passes horizontally through the air inlet pipe, and two rotating plates are rotatably connected to the shaft in opposite directions. Each rotating plate has a hinged rod hinged to its side away from the air inlet, and the ends of both hinged rods away from the air inlet are hinged to the sliding plate. A transmission assembly is provided inside the air inlet pipe, driving the sliding plate to slide vertically. This device, through the transmission assembly, drives the sliding plate to move towards the air inlet away from the air inlet pipe. The hinged rods are pulled upwards, forcing the two rotating plates to rotate upwards and move closer together. The size of the air inlet can be adjusted, allowing for very precise control of the gas flow rate, achieving stepless continuous adjustment, and accurately matching process requirements. The air volume can be adjusted while maintaining the aeration disc structure, resulting in relatively uniform aeration across all aeration holes.

Description

Technical Field

[0001] This utility model relates to the field of aeration disc technology, specifically a pulse aeration diffusion disc structure for a short-range nitrification reactor. Background Technology

[0002] The key to short-cut nitrification lies in controlling the nitrification process at the ammonia oxidation step, preventing subsequent nitrite oxidation. This requires creating environmental conditions favorable to the growth of AOB (ammonia-oxidizing bacteria) but unfavorable to NOB (nitrogenous oxygen bacteria). One of the most important control parameters is dissolved oxygen (DO) concentration. Pulsed aeration diffuser discs typically have the characteristics of rapid response and rapid bubble generation and disappearance during aeration / stop, which can more effectively create a drastic DO fluctuation environment, potentially resulting in a more significant inhibition of NOB.

[0003] For example, Chinese patent CN118183987A, entitled "An Aeration Disc for Auxiliary Aeration," includes an aeration rod and a disc body connected vertically. The disc body consists of a toothed disc and a base that are rotatably connected vertically. The toothed disc has multiple serrations arranged at an angle, and a groove is formed in the middle of the upper end of the toothed disc. An air inlet hole communicating with the groove is also formed on the toothed disc. A flange is provided between the disc body and the aeration rod. This invention changes the overlapping portion of the first and second aeration holes by rotating the base. In wastewater treatment, even if different aeration volumes are required depending on the desired aeration rate, it is not necessary to prepare multiple aeration discs with different treatment capacities. The aeration volume of the disc body can be adjusted by rotating the base, saving equipment costs. Furthermore, the inclined serrations on the toothed disc give the bubbles a certain tangential velocity during release, making their movement path longer and ensuring the aeration effect in the fermentation tank.

[0004] While the aeration disc for auxiliary aeration mentioned in the above patent is practical and convenient, it also has shortcomings. The aeration volume is adjusted by rotating the base and the toothed disc relative to each other, but impurities in the sewage can penetrate into the tiny gap between the two, causing the rotating mechanism to jam or the orifice to be permanently blocked. In addition, gas is prone to leaking from the gap between the two discs. Utility Model Content

[0005] The purpose of this invention is to provide a pulse aeration diffuser structure for a short-path nitrification reactor to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: The pulse aeration diffusion disc structure of the short-path nitrification reactor includes an aeration disc, a bottom cover detachably connected to the bottom of the aeration disc, a plurality of aeration holes on the bottom cover, an air inlet pipe at the top of the aeration disc, a sliding plate vertically slidably connected inside the air inlet pipe, a rotating shaft horizontally passing through the air inlet pipe, two rotating plates rotatably connected to the rotating shaft in the opposite direction, and a hinge rod hinged to the side of each of the two rotating plates away from the air inlet pipe inlet, and the ends of the two hinge rods away from the air inlet pipe inlet are hinged to the sliding plate, and a transmission component is provided inside the air inlet pipe, through which the sliding plate is driven to slide vertically.

[0007] Furthermore, the transmission assembly includes a screw, the sliding plate is screwed to the screw, and the air intake pipe is provided with a limiting member for restricting the sliding plate from rotating around the screw.

[0008] Furthermore, the limiting component includes two sliders, and the two sliders are respectively disposed at both ends of the sliding plate. Two vertically symmetrical sliding grooves are provided inside the air intake pipe, and the two sliders are slidably connected in the two sliding grooves respectively.

[0009] Furthermore, two retaining rings are fitted on the screw, and the sides of the two retaining rings that are close to each other are respectively attached to the two sides of the bottom cover.

[0010] Furthermore, a threaded section is provided at the bottom of the aeration disc, and the bottom cover is screwed to the bottom of the aeration disc through the threaded section. An internal threaded section is provided inside the air inlet pipe.

[0011] Furthermore, two clamps are symmetrically hinged to the intake pipe, and each clamp has a threaded hole.

[0012] Compared with the prior art, the beneficial effects provided by this utility model are as follows: The pulse aeration diffuser structure of this short-path nitrification reactor drives the sliding plate to move towards the air inlet away from the air inlet pipe through the transmission component. The hinge rod is pulled upward, applying an upward force to the connection point of the rotating plate. Since the rotating shaft is fixed inside the air inlet pipe, this upward force will create a torque, forcing the two rotating plates to rotate upward and move closer together. The size of the inlet in the air inlet pipe can be adjusted, and the gas flow can be controlled very precisely to achieve stepless continuous adjustment. It can accurately match the process requirements, adjust the gas volume while keeping the aeration disc structure unchanged, and ensure that the ventilation state of all aeration holes is relatively uniform, avoiding gas leakage. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0015] Figure 2 The overall structure is shown in the lower view of an embodiment of this utility model;

[0016] Figure 3 for Figure 2 Sectional view at point AA;

[0017] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0018] Figure 5 This is a partial structural diagram provided for an embodiment of the present utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Aeration disc; 2. Air inlet pipe; 3. Clamp; 4. Sliding plate; 5. Sliding block; 6. Screw; 7. Slide groove; 8. Hinge rod; 9. Internal thread section; 10. Rotating plate; 11. Rotating shaft; 12. Bottom cover; 13. Retaining ring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Please see Figure 1-5 The present invention provides a technical solution: the pulse aeration diffuser structure of the short-path nitrification reactor includes an aeration disc 1, a bottom cover 12 detachably connected to the bottom of the aeration disc 1, multiple aeration holes on the bottom cover 12, an air inlet pipe 2 at the top of the aeration disc 1, a sliding plate 4 vertically slidably connected inside the air inlet pipe 2, a rotating shaft 11 horizontally passing through the air inlet pipe 2, two rotating plates 10 rotatably connected to the rotating shaft 11 in the opposite direction, and a hinge rod 8 hinged to the side of each rotating plate 10 away from the inlet of the air inlet pipe 2, and the ends of the two hinge rods 8 away from the inlet of the air inlet pipe 2 are hinged to the sliding plate 4, and a transmission assembly is provided inside the air inlet pipe 2. The component is driven by a transmission assembly to vertically slide the sliding plate 4. Specifically, the transmission assembly drives the sliding plate 4 to move towards the air inlet away from the air inlet pipe 2. The hinge rod 8 is pulled upward, applying an upward force to the connection point of the rotating plate 10. Since the rotating shaft 11 is fixed inside the air inlet pipe 2, this upward force creates a torque, forcing the two rotating plates 10 to rotate upward and move closer together. The size of the inlet inside the air inlet pipe 2 can be adjusted, allowing for very precise control of the gas flow rate and stepless continuous adjustment. It can accurately match process requirements and adjust the air volume while keeping the structure of the aeration disc 1 unchanged. The ventilation state of all aeration holes is relatively uniform, avoiding gas leakage.

[0022] As a preferred technical solution, the transmission assembly includes a screw 6, a sliding plate 4 screwed to the screw 6, and a limiting component for restricting the rotation of the sliding plate 4 around the screw 6 is provided in the air intake pipe 2. Specifically, the limiting component includes two sliders 5, which are respectively disposed at both ends of the sliding plate 4. Two vertically symmetrical sliding grooves 7 are provided in the air intake pipe 2, and the two sliders 5 are slidably connected in the two sliding grooves 7. The axial rotation of the sliding plate 4 is restricted by the sliding cooperation between the sliders 5 and the sliding grooves 7, and the sliding plate 4 is driven to move vertically by the helical transmission of the screw 6.

[0023] As a preferred technical solution, two retaining rings 13 are sleeved on the screw 6. The side of the two retaining rings 13 that are close to each other is respectively attached to the two sides of the bottom cover 12. Specifically, the two retaining rings 13 are set to limit the position of the screw 6 in the vertical direction to prevent displacement in the vertical direction.

[0024] As a preferred technical solution, the bottom of the aeration disc 1 is provided with a threaded section, and the bottom cover 12 is screwed to the bottom of the aeration disc 1 through the threaded section. The air inlet pipe 2 is provided with an internal threaded section 9. Specifically, the main pipe is connected externally, and the connecting pipe with external threads on the main pipe is wrapped with PTFE tape or covered with sealing strips. Then the air inlet pipe 2 is screwed on. The thread taper is used to achieve tighter tightening. The PTFE tape or sealing strip can prevent loosening due to micro-vibration.

[0025] As a preferred technical solution, two clamps 3 are symmetrically hinged on the air inlet pipe 2. Each clamp 3 has a threaded hole. Specifically, the clamps 3 are made of stainless steel or reinforced plastic. They clamp the air inlet pipe 2 of the aeration disc 1 to the pipe, with a sealing ring in the middle. The installation is quick. The two clamps 3 are then connected together with bolts to fix them. This method can adapt to pipe deformation and has good compatibility with flexible pipes such as PE and PVC.

[0026] Working principle: The pulse aeration diffuser structure of this short-cut nitrification reactor connects the inlet pipe 2 to the main pipeline with bolts, and then connects two clamps 3 to the pipeline with bolts. By rotating the screw 6, the screw 6 drives the sliding plate 4 to move away from the inlet of the inlet pipe 2. The hinge rod 8 is pulled upward, applying an upward force to the connection point of the rotating plate 10. Since the rotating shaft 11 is fixed inside the inlet pipe 2, this upward force creates a torque, forcing the two rotating plates 10 to rotate upward and move closer together. The size of the inlet in the inlet pipe 2 can be adjusted, and the gas flow can be controlled very precisely to achieve stepless continuous adjustment. It can accurately match the process requirements and adjust the gas volume while keeping the structure of the aeration disc 1 unchanged. The ventilation state of all aeration holes is relatively uniform, avoiding gas leakage.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pulse aeration diffuser plate structure of a short-cut nitrification reactor, characterized by, The aeration disc (1) is detachably connected to a bottom cover (12). The bottom cover (12) has multiple aeration holes. The top of the aeration disc (1) has an air inlet pipe (2). A sliding plate (4) is vertically slidably connected inside the air inlet pipe (2). A rotating shaft (11) is horizontally inserted inside the air inlet pipe (2). Two rotating plates (10) are rotatably connected to the rotating shaft (11) in the opposite direction. A hinge rod (8) is hinged to the side of the two rotating plates (10) away from the inlet of the air inlet pipe (2). The end of the two hinge rods (8) away from the inlet of the air inlet pipe (2) is hinged to the sliding plate (4). A transmission component is provided inside the air inlet pipe (2). The sliding plate (4) is vertically slidably connected through the transmission component.

2. The pulse aeration diffuser disc structure of a short-cut nitrification reactor according to claim 1, characterized in that, The transmission assembly includes a screw (6), the sliding plate (4) is screwed to the screw (6), and the air intake pipe (2) is provided with a limiting member for restricting the sliding plate (4) from rotating around the screw (6).

3. The pulse aeration diffuser structure of a short-path nitrification reactor according to claim 2, characterized in that, The limiting component includes two sliders (5), and the two sliders (5) are respectively disposed at both ends of the sliding plate (4). The air intake pipe (2) is vertically and symmetrically provided with two sliding grooves (7), and the two sliders (5) are slidably connected in the two sliding grooves (7).

4. The pulse aeration diffuser structure of a short-path nitrification reactor according to claim 2, characterized in that, Two retaining rings (13) are fitted on the screw (6), and the two retaining rings (13) are respectively attached to the two sides of the bottom cover (12) on the side that is close to each other.

5. The pulse aeration diffuser structure of a short-path nitrification reactor according to claim 1, characterized in that, The aeration disc (1) has a threaded section at the bottom, and the bottom cover (12) is screwed to the bottom of the aeration disc (1) through the threaded section. The air inlet pipe (2) has an internal threaded section (9).

6. The pulse aeration diffuser structure of a short-path nitrification reactor according to claim 1, characterized in that, The air intake pipe (2) is symmetrically hinged with two clamps (3), and each clamp (3) has a threaded hole.

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