Valve for adjusting aeration rate in sewage treatment

Abstract

The invention relates to the technical field of sewage aeration valves, in particular to a valve for adjusting the aeration rate in sewage treatment, which comprises a valve body and an air outlet channel arranged on the valve body, an overflow channel is arranged on the valve body, and a first valve plug mechanism and a second valve plug mechanism are arranged on the valve body. The first valve plug mechanism and the second valve plug mechanism are respectively used for blocking the air outlet channel and the overflow channel; a rotating mechanism is installed on the valve body, and a cam is arranged on a driving part of the rotating mechanism. The device has the capability of rapidly regulating and controlling the aeration flow, and in the aeration operation process of the device, when the aeration output quantity is small and is not matched with the operation power of the air blower, part of airflow is automatically discharged through the overflow channel, so that the situation that the service life and the operation reliability of the air blower are influenced due to overhigh back pressure of an outlet of the air blower is effectively avoided; if the operation power of the blower is seriously not matched with the current aeration demand quantity, the operation power of the blower is controlled to be reduced, so that the aeration quantity is matched with the power of the blower, and energy waste is avoided.

Description

Technical Field

[0001] This invention relates to the field of wastewater aeration valve technology, specifically to a valve for adjusting the aeration volume in wastewater treatment. Background Technology

[0002] In the biological treatment unit of wastewater treatment, aeration is a core process operation. Essentially, it involves forcibly introducing air into the wastewater through specialized equipment. On the one hand, this allows the wastewater in the tank to have sufficient contact with the air, increasing the dissolved oxygen concentration in the wastewater. On the other hand, the hydraulic stirring effect formed by the airflow disturbance effectively prevents the sedimentation of suspended solids in the tank, strengthens the contact between organic matter, microorganisms, and dissolved oxygen in the tank, and thus oxidizes and decomposes the organic matter in the wastewater. As one of the most widely used aeration methods in current wastewater treatment projects, blower aeration works by using a blower to provide air with a certain volume and pressure. The air is then transported to a diffuser at the bottom of the tank via a pipeline system. The diffuser introduces the air into the wastewater in the form of tiny bubbles, thereby increasing the contact area between the air and the wastewater and achieving full contact between the two.

[0003] In traditional blower aeration systems, regulating valves are often used as devices to adjust the aeration volume. However, there are obvious technical limitations in practical applications. Although they can adjust the aeration volume to a certain extent, it is difficult to achieve a perfect match with the operation of the blower during the adjustment process. For example, when the inner channel diameter of the regulating valve decreases, the outlet back pressure of the blower will increase accordingly, which will not only increase the load on the blower and reduce its efficiency, but may even affect the service life and operational reliability of the blower. In addition, it will also cause unnecessary energy consumption, which is inconsistent with the energy-saving and consumption-reducing technology development direction advocated by the current wastewater treatment industry. Summary of the Invention

[0004] In view of the above situation and to overcome the defects of the prior art, the present invention provides a valve for adjusting the aeration volume in sewage treatment, so as to solve the above problems.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A valve for adjusting aeration volume in wastewater treatment includes a valve body and an air outlet channel disposed on the valve body. The valve body is provided with an overflow channel. The valve body is provided with a first valve plug mechanism and a second valve plug mechanism, which are respectively used to block the air outlet channel and the overflow channel. A rotating mechanism is installed on the valve body. A cam is provided on the drive part of the rotating mechanism. The position of the cam matches the drive part of the first valve plug mechanism. When the cam rotates, it abuts against the drive part of the first valve plug mechanism. The valve body is provided with a sliding abutment. The driving part of the rotating mechanism is drivenly connected to the sliding abutment. The position of the sliding abutment matches the driving part of the second valve plug mechanism. When the sliding abutment abuts against the driving part of the second valve plug mechanism, the second valve plug mechanism closes the overflow channel.

[0006] Preferably, the valve body is provided with a protective shell, the air outlet channel is provided with a first elastic sealing ring, and the overflow channel is provided with a second elastic sealing ring.

[0007] Preferably, the first valve plug mechanism includes a first cylinder disposed on the valve body, the input end of the first cylinder corresponding to the output end of the air outlet channel, an air outlet pipe is provided on one side of the first cylinder, and a first flow meter is installed in the air outlet pipe.

[0008] Preferably, a first stopper rod is slidably connected through the first cylinder body, and a first receiving body is provided at one end of the first stopper rod extending out of the first cylinder body. The position of the first receiving body corresponds to the position of the cam. A first plug is provided at the other end of the first stopper rod, and the first plug matches the first elastic sealing ring. A first spring is installed between the bottom wall of the first cylinder body and the first plug.

[0009] Preferably, the second valve plug mechanism includes a second cylinder disposed on the valve body, the input end of the second cylinder corresponding to the output end of the overflow channel, an overflow pipe is provided on one side of the second cylinder, and a second flow meter is installed in the overflow pipe.

[0010] Preferably, a second stopper rod is slidably connected through the second cylinder, a second receiving body is provided at one end of the second stopper rod extending out of the second cylinder, a second plug is provided at the other end of the second stopper rod, the second plug is matched with a second elastic sealing ring, and a second spring is installed between the bottom wall of the second cylinder and the second plug.

[0011] Preferably, a magnet is installed on the second blockage, and an electromagnet is provided on the inner bottom wall of the second cylinder, with the magnet and the electromagnet repelling each other magnetically.

[0012] Preferably, the rotating mechanism includes a first servo motor mounted on the protective shell, a rotating rod on the output end of the first servo motor, the rotating rod being fixedly connected to a cam, and a gear being coaxially mounted on the rotating rod.

[0013] Preferably, the sliding abutment includes a groove on the protective shell, a fitting block is slidably fitted in the groove, a rack is provided on one side of the fitting block extending out of the groove, the gear meshes with the rack, the bottom of the rack corresponds to the second support body, and a third spring is installed between the fitting block and the inner wall of the groove.

[0014] Preferably, the valve body has a dividing body in the channel, which divides the channel in the valve body into an outlet chamber and a mixing chamber. The outlet chamber and the mixing chamber are connected through the tail channel. A guide plate is hinged to the side of the dividing body near the input end of the valve body. A second servo motor is installed on the valve body, and the output end of the second servo motor is linked to the hinge shaft of the guide plate. The valve body is equipped with a secondary air intake connector, the output end of which is connected to the interior of the mixing chamber.

[0015] The beneficial effects of this invention are as follows: 1. This invention has the ability to quickly adjust the aeration flow rate. During the aeration operation of this device, when the aeration output is small and does not match the operating power of the blower, part of the airflow is automatically discharged through the overflow channel, which effectively avoids excessive back pressure at the blower outlet, affecting the service life and operational reliability of the blower. If the operating power of the blower is seriously mismatched with the current aeration demand, the operating power of the blower is reduced to achieve a match between the aeration volume and the blower power, thus avoiding energy waste.

[0016] 2. This invention can quickly adjust the opening force of the overflow channel according to specific needs; the airflow discharged through the overflow pipe is introduced into the air intake channel of the blower to form an airflow recycling loop, which can reduce the blower's need for fresh air intake, thereby reducing the blower's work and meeting the requirements for energy-saving operation.

[0017] 3. When the outlet of the aeration equipment is blocked, the present invention can quickly switch to the unblocking operation mode. At this time, the gas output by the present invention will be discharged into the aeration equipment in the form of high-pressure pulse airflow. The impact kinetic energy of the airflow will clear the blockage at the outlet of the aeration equipment, realizing automatic unblocking without stopping the machine for disassembly and maintenance, thus improving the continuity of system operation.

[0018] 4. When aeration is interrupted due to process requirements or misoperation, the airflow in the valve body can be discharged through the overflow channel without manual intervention to shut down the blower. This avoids frequent start-stop of the blower, improves operational convenience, reduces the risk of mechanical failure caused by frequent start-stop of the blower, and ensures the safety and stability of the system operation.

[0019] 5. By setting a secondary air inlet connector, the present invention can perform mixed aeration, giving it a dual-mode aeration function to meet the needs of different wastewater treatment processes. By adjusting the position of the guide plate, the present invention can quickly switch between mixed aeration mode and air aeration mode. When switching from mixed aeration mode to air aeration mode, the airflow path is shortened, effectively avoiding unnecessary air loss, and thus has high practicality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a cross-sectional view of the present invention. Figure 1 .

[0022] Figure 3 This is a cross-sectional view of the present invention. Figure 2 .

[0023] Figure 4 This is a cross-sectional view of the first cylindrical body of the present invention.

[0024] Figure 5 This is a cross-sectional view of the second cylinder of the present invention.

[0025] Figure 6 For the present invention Figure 3 A magnified structural diagram of part A in the middle.

[0026] Figure 7 This is a schematic diagram of the structure of the sliding abutment component of the present invention.

[0027] In the attached diagram: 1. Valve body; 2. Air outlet passage; 3. Overflow passage; 4. Cam; 5. First elastic sealing ring; 6. Second elastic sealing ring; 7. First cylinder; 8. Air outlet connector; 9. First flow meter; 10. First plug rod; 11. First receiving body; 12. First plug; 13. Second cylinder; 14. Overflow connector; 15. Second flow meter; 16. First spring; 17. Second plug rod; 18. Second receiving body; 19. Second plug; 20. Second spring; 21. Magnet; 22. Electromagnet; 23. Protective shell; 24. First servo motor; 25. Rotating rod; 26. Gear; 27. Slide groove; 28. Fitting block; 29. ​​Rack; 30. Third spring; 31. Divider; 32. Air outlet chamber; 33. Mixing chamber; 34. Tail passage; 35. Guide plate; 36. Secondary air inlet connector; 37. Second servo motor. Detailed Implementation

[0028] The following will be for reference. Figures 1 to 7 The various embodiments of the present invention will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0029] A valve for adjusting aeration volume in wastewater treatment, such as Figures 1-3As shown, the device includes a valve body 1 and an air outlet channel 2 disposed on the valve body 1. The input end of the valve body 1 is connected to the air outlet of the blower through an air supply pipe. The valve body 1 is provided with an overflow channel 3. The valve body 1 is provided with a first valve plug mechanism and a second valve plug mechanism, which are used to block the air outlet channel 2 and the overflow channel 3, respectively. The valve body 1 is provided with a protective shell 23, and the first valve plug mechanism and the second valve plug mechanism are both located inside the protective shell 23. A first elastic sealing ring 5 is provided inside the air outlet channel 2, and a second elastic sealing ring 5 is provided inside the overflow channel 3. A sealing ring 6 is provided; a rotating mechanism is installed on the valve body 1, and a cam 4 is provided on the drive part of the rotating mechanism. The position of the cam 4 matches the drive part of the first valve plug mechanism. The rotating mechanism includes a first servo motor 24 installed on the protective shell 23. The first servo motor 24 can rotate in both directions. A rotating rod 25 is provided on the output end of the first servo motor 24. The rotating rod 25 is fixedly connected to the cam 4. A gear 26 is coaxially provided on the rotating rod 25. When the first servo motor 24 drives the rotating rod 25 to rotate, the cam 4 and the gear 26 follow the rotating rod 25 to rotate.

[0030] by Figure 3 As a reference, when the cam 4 rotates and causes the first valve plug mechanism to move downward, the first valve plug mechanism cuts off and closes the air outlet channel 2. The operator can change the stroke opening of the first valve plug mechanism by controlling the rotational angular displacement of the cam 4 (i.e., the contact position between the cam 4 profile and the follower) to adjust the opening degree of the air outlet channel 2, that is, adjust the aeration flow rate. like Figure 3 and Figure 4 As shown, the first valve plug mechanism includes a first cylinder 7 mounted on the valve body 1. The input end of the first cylinder 7 corresponds to the output end of the air outlet channel 2. An air outlet pipe 8 is provided on one side of the first cylinder 7. The air outlet pipe 8 is connected to the aeration equipment through a pipe. A first flow meter 9 is installed inside the air outlet pipe 8 to monitor the aeration flow rate. A first plug rod 10 is slidably connected through the first cylinder 7. A first receiving body 11 is provided at one end of the first plug rod 10 extending out of the first cylinder 7. The position of the first receiving body 11 corresponds to the position of the cam 4. A first plug 12 is provided at the other end of the first plug rod 10. The first receiving body 11 can be adjusted by controlling the rotational angular displacement of the cam 4. The position of the first plug 12 is adjusted. The first plug 12 matches the first elastic sealing ring 5. When the first plug 12 moves away from the channel port along the axis of the air outlet channel 2, the flow cross-sectional area formed by the first plug 12 and the inner wall of the channel port increases synchronously, and the aeration flow rate increases accordingly. Conversely, when the first plug 12 moves closer to the channel port, the annular flow cross-sectional area gradually decreases, and the aeration flow rate decreases accordingly. When the first plug 12 moves to the limit sealing position (i.e., it abuts against the first elastic sealing ring 5), the effective flow area approaches zero, and the air outlet channel 2 is completely closed. A first spring 16 is installed between the inner bottom wall of the first cylinder 7 and the first plug 12.

[0031] like Figure 3 and Figure 5 As shown, the second valve plug mechanism includes a second cylinder 13 disposed on the valve body 1. The input end of the second cylinder 13 corresponds to the output end of the overflow channel 3. An overflow pipe 14 is provided on one side of the second cylinder 13. The overflow pipe 14 is connected to an external return gas pipeline. The output end of the return gas pipeline is connected to the air inlet channel of the blower. A second flow meter 15 is installed inside the overflow pipe 14. The second flow meter 15 is used to monitor the overflow gas flow rate.

[0032] A second plug rod 17 is slidably connected through the second cylinder 13. A second receiving body 18 is provided at one end of the second plug rod 17 extending out of the second cylinder 13, and a second plug 19 is provided at the other end of the second plug rod 17. The second plug 19 matches the second elastic sealing ring 6. A second spring 20 is installed between the inner bottom wall of the second cylinder 13 and the second plug 19. The second plug 19 is used to close the overflow channel 3.

[0033] A magnet 21 is installed on the second blockage 19, and an electromagnet 22 is provided on the inner bottom wall of the second cylinder 13. The magnet 21 and the electromagnet 22 are magnetically repelled. By adjusting the input current intensity of the electromagnet 22, the magnetic field strength generated by the electromagnet 22 can be changed. Since the magnet 21 and the electromagnet 22 are in a configuration with the same poles facing each other, the magnetic repulsion force between them will change synchronously with the change of the magnetic field strength of the electromagnet 22. The change of the magnetic repulsion force will adjust the downward pushing force on the second blockage 19, that is, adjust the opening resistance of the overflow channel 3.

[0034] By adjusting the input current intensity of electromagnet 22, the magnetic field strength generated by electromagnet 22 can be changed. Since magnet 21 and electromagnet 22 are configured with their poles facing each other, the strength of the magnetic repulsion force between them changes synchronously with the change in the magnetic field strength of electromagnet 22. When the input current of electromagnet 22 increases, the magnetic repulsion force increases accordingly; when the input current decreases, the magnetic repulsion force weakens accordingly. This magnetic repulsion force is transmitted to the second blockage 19, forming an axial downward resisting force on the second blockage 19, and the magnitude of the resisting force changes with the magnetic repulsion force. Dynamic adjustment; the second blockage 19, as the opening and closing control element of the overflow channel 3, is directly affected by the downward force, which determines the opening resistance threshold of the overflow channel 3. When the force increases, the fluid in the overflow channel 3 needs to have a higher static pressure to overcome the force and push the second blockage 19 upward to open the overflow channel 3, i.e., the opening resistance increases; when the force decreases, a lower fluid static pressure can push the second blockage 19 to move, and the opening resistance of the overflow channel 3 decreases; by controlling the intensity of the electromagnetic repulsion force, the opening resistance of the overflow channel 3 can be quickly adjusted.

[0035] like Figure 3As shown, the valve body 1 is provided with a sliding abutment. The driving part of the rotating mechanism is drivenly connected to the sliding abutment. The position of the sliding abutment matches the driving part of the second valve plug mechanism. When the sliding abutment abuts against the driving part of the second valve plug mechanism, the second valve plug mechanism closes the overflow channel 3. Figure 6 and Figure 7 As shown, the sliding abutment includes a groove 27 on the protective shell 23, a fitting block 28 is slidably fitted in the groove 27, and a rack 29 is provided on one side of the fitting block 28 extending out of the groove 27. A gear 26 meshes with the rack 29, and the bottom of the rack 29 corresponds to the second support body 18. A third spring 30 is installed between the fitting block 28 and the inner wall of the groove 27. When the gear 26 rotates in the forward direction, it drives the rack 29 to rise. When the gear 26 rotates in the reverse direction, it drives the rack 29 to fall. The rack 29 abuts against the second support body 18, causing the second block 19 to fall. The amount of toothed portion of the rack 29 is set, that is, the amount of vertical movement of the rack 29 is a fixed value.

[0036] like Figure 2 and Figure 3 As shown, a divider 31 is provided in the channel of valve body 1, which divides the channel of valve body 1 into an outlet chamber 32 and a mixing chamber 33. The outlet chamber 32 and the mixing chamber 33 are connected through the tail channel 34. A guide plate 35 is hinged to the side of the divider 31 near the input end of valve body 1. A second servo motor 37 is installed on valve body 1, and the output end of the second servo motor 37 is linked with the hinge shaft of the guide plate 35. A secondary air inlet connector 36 is installed on valve body 1, and the output end of the secondary air inlet connector 36 is connected to the interior of the mixing chamber 33.

[0037] The auxiliary gas inlet connector 36 serves as the auxiliary gas interface unit of the device, connecting to an external auxiliary gas delivery pipeline. The specific auxiliary gas is selected according to process requirements, such as an oxygen or ozone delivery pipeline, to achieve directional introduction of the auxiliary gas.

[0038] In high-concentration organic wastewater treatment scenarios (such as food processing wastewater, brewing wastewater, etc.), the microbial degradation process of such wastewater requires a large amount of dissolved oxygen. At the same time, in compact treatment systems with limited space, traditional air aeration is insufficient to meet the oxygen demand of high-load microorganisms due to the oxygen volume fraction of only 21%, easily leading to dissolved oxygen deficiency in the system and affecting degradation efficiency. This device connects to the oxygen delivery pipeline through the auxiliary air inlet connector 36 to construct an oxygen-enriched aeration supply path, which can significantly increase the oxygen concentration in the aeration airflow, thereby increasing the dissolved oxygen saturation concentration in the water and improving wastewater treatment efficiency.

[0039] When the secondary air inlet connector 36 is connected to the ozone delivery pipeline, the strong oxidizing properties of ozone can effectively oxidize and decompose organic matter that is difficult to degrade in traditional processes, such as azo dyes and phenolic substances. On the other hand, ozone can efficiently kill pathogenic microorganisms such as bacteria and viruses in water bodies, meeting the requirements of high-standard water quality treatment.

[0040] by Figure 2 For this purpose, under mixed aeration conditions, the guide plate 35 closes the right end of the outlet chamber 32, cutting off the path for air to directly enter the outlet chamber 32, and forcing the airflow into the mixing chamber 33. During aeration, the main air source (air) first enters the mixing chamber 33 through the main air intake path, while the auxiliary gas (oxygen or ozone) flows into the mixing chamber 33 through the secondary air intake connector 36. The two are mixed in the mixing chamber 33, and then flow out sequentially through the tail channel 34, the outlet chamber 32, the outlet channel 2, and the outlet pipe 8. It should be noted that, in order to improve the mixing uniformity, a dispersion structure (such as a dispersion plate) is set inside the mixing chamber 33. This structure can quickly mix the main gas and the auxiliary gas by changing the airflow direction and dividing the airflow stream. When the device switches to air aeration mode, the second servo motor 37 drives the guide plate 35 to flip downward. At this time, the guide plate 35 switches from blocking the right end of the air outlet chamber 32 to blocking the right end of the mixing chamber 33, cutting off the path for the airflow to directly enter the mixing chamber 33. In this state, the air input to the valve body 1 can directly enter the air outlet chamber 32. Compared with the mixed aeration mode, the airflow path is shortened, effectively reducing air loss (such as the local pressure drop generated by the dispersion in the mixing chamber 33).

[0041] During the aeration operation cycle of the device, after the gas source (air or mixed gas) enters the valve body 1, it flows sequentially through the air outlet channel 2 (the core node for flow control), the second cylinder 13 (the airflow transition chamber), and the air outlet pipe 8 (the aeration output interface), and is finally discharged into the aeration equipment (such as the aeration disc or aerator) to complete the closed loop of aeration airflow. This device has the ability to regulate aeration flow rate. Specifically, by controlling the first servo motor 24 to output positive rotational torque, the cam 4 is driven to rotate in the forward direction. Due to the change in the contour curve of the cam 4, the first receiving body 11 will be displaced by lifting and lowering, which in turn drives the first blockage 12 to lift and lower synchronously, thereby realizing the regulation of aeration flow rate to adapt to the aeration needs under different working conditions. When the aeration output is set to a small value, but the amount of air injected into the valve body 1 is large, the airflow inside the valve body 1 is obstructed, causing the pressure inside the cavity to rise. The high-pressure airflow generates an upward thrust on the second blockage 19. When the pressure reaches the preset threshold, that is, when the thrust overcomes the pre-tightening force of the second blockage 19, the overflow channel 3 is opened, and part of the airflow is discharged through the overflow pipe 14, which effectively avoids the blower outlet back pressure being too high, which would increase the blower load and thus affect the service life and operational reliability of the blower. It should be noted that the electrical components of this device (such as the second flow meter 15 and the first servo motor 24) are electrically connected to the external aeration control system (such as a PLC controller). During the exhaust process of the overflow pipe 14, the second flow meter 15 collects the exhaust volume data in real time and converts it into an electrical signal to be transmitted to the control system. When the exhaust volume is detected to exceed the preset threshold, the system determines that "the blower operating power is seriously mismatched with the current aeration demand". At this time, the control system controls the blower operating power to reduce the power to achieve a match between the aeration volume and the blower power, so as to avoid energy waste. It should be noted that the pressure relief airflow discharged through the overflow pipe 14 is introduced into the air intake channel of the blower through the return pipe, forming an airflow recycling loop. This design can reduce the blower's requirement for fresh air intake, thereby reducing the blower's work and meeting the requirements for energy-saving operation. It is worth noting that aeration equipment is usually installed at the bottom of sewage tanks, making it susceptible to factors such as suspended solids settling, which can lead to blockage at the outlet of the aeration equipment. During the aeration operation of this device, if the air outlet channel 2 is in a fully open state, but the exhaust volume of the air outlet pipe 8 is far lower than the theoretical flow rate corresponding to the opening, it is determined that the outlet of the aeration equipment is blocked. At this time, the control system controls the first servo motor 24 to rotate in the reverse direction, and the cam 4 rotates in the reverse direction, causing the first receiving body 11 to produce periodic lifting and lowering displacement, which drives the first blockage 12 to intermittently open and close the air outlet channel 2, forming a pulsed airflow. The flow output is as follows: simultaneously, the gear 26 rotates in the opposite direction to drive the rack 29 to descend, and the bottom of the rack 29 applies a downward thrust to the second receiving body 18, causing the second blockage 19 to descend, thereby automatically sealing the overflow channel 3 and cutting off the pressure relief flow path. In this state, the airflow inside the valve body 1 forms a rapid instantaneous pressure accumulation due to the closure of the overflow channel 3. Subsequently, through the intermittent opening of the air outlet channel 2, it is discharged into the aeration equipment in the form of high-pressure pulse airflow from the air outlet pipe 8. The impact kinetic energy of the airflow is used to clear the blockage at the outlet of the aeration equipment, thereby achieving automatic unblocking of the blockage without the need for shutdown and disassembly maintenance, thus improving the continuity of system operation. When the aeration is interrupted due to process requirements (such as short-term aeration stoppage for water quality monitoring) or misoperation (i.e., the air outlet channel 2 is completely closed), the blower is still running. At this time, the airflow inside the valve body 1 can be discharged through the overflow channel 3 without manual intervention to shut down the blower. This design avoids frequent start-stop of the blower, which not only improves the convenience of operation, but also reduces the risk of mechanical failure caused by frequent start-stop of the blower, and ensures the safety and stability of the system operation.

[0042] It should be noted that in the description of this invention, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A valve for adjusting aeration volume in wastewater treatment, comprising a valve body (1) and an air outlet channel (2) disposed on the valve body (1), characterized in that, The valve body (1) is provided with an overflow channel (3), and the valve body (1) is provided with a first valve plug mechanism and a second valve plug mechanism. The first valve plug mechanism and the second valve plug mechanism are respectively used to block the air outlet channel (2) and the overflow channel (3); a rotating mechanism is installed on the valve body (1), and a cam (4) is provided on the drive part of the rotating mechanism. The position of the cam (4) matches the drive part of the first valve plug mechanism. When the cam (4) rotates, it abuts against the drive part of the first valve plug mechanism. The valve body (1) is provided with a sliding abutment. The driving part of the rotating mechanism is driven to connect with the sliding abutment. The position of the sliding abutment matches the driving part of the second valve plug mechanism. When the sliding abutment abuts against the driving part of the second valve plug mechanism, the second valve plug mechanism closes the overflow channel (3).

2. The valve for adjusting aeration volume in wastewater treatment according to claim 1, characterized in that, The valve body (1) is provided with a protective shell (23), the air outlet channel (2) is provided with a first elastic sealing ring (5), and the overflow channel (3) is provided with a second elastic sealing ring (6).

3. A valve for adjusting aeration volume in wastewater treatment according to claim 2, characterized in that, The first valve plug mechanism includes a first cylinder (7) disposed on the valve body (1). The input end of the first cylinder (7) corresponds to the output end of the air outlet channel (2). An air outlet pipe (8) is provided on one side of the first cylinder (7). A first flow meter (9) is installed inside the air outlet pipe (8).

4. A valve for adjusting aeration volume in wastewater treatment according to claim 3, characterized in that, A first plug rod (10) is slidably connected through the first cylinder (7). One end of the first plug rod (10) extending out of the first cylinder (7) is provided with a first receiving body (11). The setting position of the first receiving body (11) corresponds to the setting position of the cam (4). The other end of the first plug rod (10) is provided with a first plug (12). The first plug (12) matches the first elastic sealing ring (5). A first spring (16) is installed between the inner bottom wall of the first cylinder (7) and the first plug (12).

5. A valve for adjusting aeration volume in wastewater treatment according to claim 3, characterized in that, The second valve plug mechanism includes a second cylinder (13) disposed on the valve body (1). The input end of the second cylinder (13) corresponds to the output end of the overflow channel (3). An overflow pipe (14) is provided on one side of the second cylinder (13), and a second flow meter (15) is installed inside the overflow pipe (14).

6. A valve for adjusting aeration volume in wastewater treatment according to claim 5, characterized in that, A second plug rod (17) is slidably connected through the second cylinder (13). A second receiving body (18) is provided at one end of the second plug rod (17) extending out of the second cylinder (13). A second plug (19) is provided at the other end of the second plug rod (17). The second plug (19) matches the second elastic sealing ring (6). A second spring (20) is installed between the inner bottom wall of the second cylinder (13) and the second plug (19).

7. A valve for adjusting aeration volume in wastewater treatment according to claim 6, characterized in that, A magnet (21) is installed on the second blockage (19), and an electromagnet (22) is provided on the inner bottom wall of the second cylinder (13). The magnet (21) and the electromagnet (22) are magnetically repelled.

8. A valve for adjusting aeration volume in wastewater treatment according to claim 6, characterized in that, The rotating mechanism includes a first servo motor (24) mounted on a protective shell (23). A rotating rod (25) is provided on the output end of the first servo motor (24). The rotating rod (25) is fixedly connected to the cam (4). A gear (26) is coaxially arranged on the rotating rod (25).

9. A valve for adjusting aeration volume in wastewater treatment according to claim 8, characterized in that, The sliding abutment includes a groove (27) provided on the protective shell (23), a fitting block (28) is slidably fitted in the groove (27), a rack (29) is provided on the side of the fitting block (28) extending out of the groove (27), a gear (26) meshes with the rack (29), the bottom of the rack (29) corresponds to the second support body (18), and a third spring (30) is installed between the fitting block (28) and the inner wall of the groove (27).

10. A valve for adjusting aeration volume in wastewater treatment according to claim 1, characterized in that, The valve body (1) has a dividing body (31) in its channel. The dividing body (31) divides the channel in the valve body (1) into an exhaust chamber (32) and a mixing chamber (33). The exhaust chamber (32) and the mixing chamber (33) are connected through the tail channel (34). A guide plate (35) is hinged to the side of the dividing body (31) near the input end of the valve body (1). A second servo motor (37) is installed on the valve body (1). The output end of the second servo motor (37) is linked to the hinge shaft of the guide plate (35). The valve body (1) is equipped with a secondary air inlet connector (36), the output end of which is connected to the interior of the mixing chamber (33).

Images