Photovoltaic power generation device for wastewater treatment and wastewater treatment system

Abstract

This utility model relates to the field of photovoltaic technology and discloses a photovoltaic power generation device and wastewater treatment system for wastewater treatment. It includes a wastewater treatment tank and a tracking bracket. The tracking bracket is installed above the wastewater treatment tank. A shielding shell is fixedly connected to one side of the tracking bracket, and a photosensitive sensor is fixedly installed in the middle of one side of the tracking bracket. A stepper motor is fixedly installed inside the shielding shell. Columnar grooves are formed on both sides of the tracking bracket, and a rotating shaft is rotatably connected to each columnar groove. A support frame for mounting photovoltaic panels is fixedly connected between the two rotating shafts. This utility model, by incorporating a moisture-proof component, can provide positive pressure airflow to the rotation gap between the columnar grooves and the rotating shafts, effectively preventing external humid air, corrosive gases, and microorganisms from entering the rotation gap. Furthermore, through a switchable dual-drying tank structure, and by simultaneously using a PTC heating rod to heat and regenerate the saturated drying tank, the moisture-proof component can continuously provide drying gas for a long period.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a photovoltaic power generation device and wastewater treatment system for wastewater treatment. Background Technology

[0002] Photovoltaic power generation is a clean energy technology that uses the photovoltaic effect of semiconductor materials to directly convert sunlight into electricity. Wastewater treatment is a process that removes or reduces pollutants in wastewater through physical, chemical, or biological methods to meet discharge standards or reuse requirements. With the continuous development of photovoltaic power generation technology, solar tracking systems have been widely used in various scenarios. In the field of wastewater treatment, combining photovoltaic power generation devices with wastewater treatment facilities can effectively utilize solar energy to provide clean energy for wastewater treatment equipment and reduce operating costs.

[0003] When installing tracking brackets in photovoltaic power generation systems in existing wastewater treatment plants, the special environment of wastewater treatment plants—high air humidity, corrosive gases, and a large number of microorganisms—makes the rotation gap between the rotating shaft and the columnar groove of the tracking bracket prone to moisture, leading to rust on the bearing parts, microbial growth, and consequently, tracking jamming and increased rotational resistance, which seriously affects the tracking accuracy and service life of the system.

[0004] Some existing technologies attempt to add sealing rings and apply grease to the rotating shaft, but the sealing rings are prone to wear and aging after long-term use, and the grease is prone to attracting dust and microorganisms, which will aggravate the contamination. Therefore, how to effectively prevent moisture from entering the rotating gap in the special environment of the wastewater treatment plant is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a photovoltaic power generation device and wastewater treatment system for wastewater treatment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a photovoltaic power generation device for wastewater treatment, comprising a wastewater treatment tank and a tracking bracket, wherein the tracking bracket is installed above the wastewater treatment tank, a shielding shell is fixedly connected to one side of the tracking bracket, a photosensitive sensor is fixedly installed in the middle of one side of the tracking bracket, and a stepper motor is fixedly installed inside the shielding shell.

[0007] The tracking bracket has columnar grooves on both sides, and each columnar groove is rotatably connected to a rotating shaft. A support frame for installing photovoltaic panels is fixedly connected between two rotating shafts.

[0008] The tracking bracket is also equipped with a moisture-proof component, which is used to provide positive pressure airflow to the rotation gap between the columnar groove and the rotating shaft to prevent external moisture from entering.

[0009] As a further description of the above technical solution,

[0010] The moisture-proof component includes an air pump fixedly installed on the tracking bracket. The input end of the air pump is connected to an air delivery pipe, and the distal end of the air delivery pipe is connected to a filter. The output end of the air pump is connected to a delivery pipe, and a protective frame for protecting the filter and the air pump is fixedly connected to the other side of the tracking bracket.

[0011] As a further description of the above technical solution,

[0012] A U-shaped auxiliary pipe is connected in parallel in the middle of the conveying pipe; a first drying tank is connected in series in the middle of the conveying pipe, and the first drying tank is located between the inlet side and the outlet side of the auxiliary pipe.

[0013] A second drying tank is connected in series in the middle of the auxiliary pipe; a first solenoid valve for switching the gas path is installed on both ends of the delivery pipe near the inlet and outlet sides of the auxiliary pipe, and a second solenoid valve is installed on the inlet and outlet sides of both ends of the auxiliary pipe.

[0014] As a further description of the above technical solution,

[0015] Both the first drying tank and the second drying tank are fixedly installed with PTC heating rods inside, and each PTC heating rod is covered with a stainless steel sintered mesh.

[0016] The stainless steel sintered mesh physically isolates the PTC heating rod from the desiccant in the drying tank and conducts heat evenly, and the stainless steel sintered mesh is fixedly connected to the bottom of the inner wall of the corresponding drying tank.

[0017] As a further description of the above technical solution,

[0018] The distal end of the delivery pipe is connected to a bidirectional pipe, both ends of which are connected to a double-ended pipe, and both ends of each double-ended pipe are connected to an annular pipe; the inner wall of each annular pipe is connected to multiple air outlet nozzles facing the rotating shaft.

[0019] As a further description of the above technical solution,

[0020] Each of the columnar grooves has two annular grooves on its inner wall. The annular tube is fixedly connected to the annular groove, and the two annular tubes are respectively sleeved on the outside of the corresponding rotating shaft.

[0021] As a further description of the above technical solution,

[0022] The tracking bracket is also provided with a support component for further supporting the support frame.

[0023] The support assembly includes two annular shells that are respectively fixedly connected to the outer walls on both sides of the tracking bracket.

[0024] As a further description of the above technical solution,

[0025] Each of the annular shells has an annular guide groove on its inner wall, and two support rollers are rolled in each guide groove. The support rollers slide along the guide groove. Each support roller is rotatably connected to a support frame on its outside, and multiple support frames are fixedly connected to both sides of the support frame.

[0026] A wastewater treatment system is also provided, including a photovoltaic power generation device that provides the electrical energy required for the operation of the wastewater treatment system.

[0027] This utility model has the following beneficial effects:

[0028] 1. This utility model, by setting a moisture-proof component, can provide positive pressure airflow to the rotation gap between the columnar groove and the rotating shaft, effectively preventing external humid air, corrosive gases and microorganisms from entering the rotation gap. This reduces the tracking jamming problem caused by shaft corrosion and microbial growth in the wastewater treatment plant environment, thereby improving the operational reliability of the system in harsh environments. The system is formed by setting a first drying tank and a second drying tank, as well as corresponding auxiliary pipes and solenoid valves, to form a switchable dual drying tank structure. At the same time, a PTC heating rod is used to heat and regenerate the saturated drying tank, realizing the recycling of the desiccant. This allows the moisture-proof component to continuously provide dry gas for a long time, thus eliminating the need for frequent desiccant replacement.

[0029] 2. This utility model provides auxiliary support to the support frame by setting a support component on the outside of the tracking bracket. The guide groove inside the annular shell cooperates with the support roller and the support frame to share the load of the rotating shaft, reduce the frictional resistance between the rotating shaft and the columnar groove, and further improve the stability and service life of the tracking system. The support roller can roll along the annular guide groove to ensure the stability of the support frame during the tracking rotation process. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model;

[0031] Figure 2 This is a schematic diagram of the support frame structure proposed in this utility model;

[0032] Figure 3 This is a schematic diagram of the cross-sectional structure of the annular groove proposed in this utility model;

[0033] Figure 4 This is a schematic diagram of the support frame structure proposed in this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the double-ended pipe connection proposed in this utility model;

[0035] Figure 6 This is a partial cross-sectional view of the auxiliary pipe connection proposed in this utility model.

[0036] Legend:

[0037] 1. Tracking bracket; 2. Shielding shell; 3. Stepper motor; 4. Support frame; 5. Rotating shaft; 6. Photovoltaic panel; 7. Photosensitive sensor; 8. Air pump; 9. Air supply pipe; 10. Filter; 11. Delivery pipe; 12. Bidirectional pipe; 13. Double-ended pipe; 14. Annular pipe; 15. Air outlet nozzle; 16. Annular groove; 17. Auxiliary pipe; 18. First drying tank; 19. Second drying tank; 20. PTC heating rod; 21. Stainless steel sintered mesh; 22. First solenoid valve; 23. Second solenoid valve; 24. Annular shell; 25. Support frame; 26. Support roller. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0039] Example 1:

[0040] As attached Figure 1-6 As shown, one embodiment of this utility model is provided: a photovoltaic power generation device for wastewater treatment, including a wastewater treatment tank and a tracking bracket 1. The tracking bracket 1 is installed above the wastewater treatment tank and is used to supply power during wastewater treatment. A shielding shell 2 is fixedly connected to one side of the tracking bracket 1. A photosensitive sensor 7 is fixedly installed in the middle of one side of the tracking bracket 1. The photosensitive sensor 7 is used to detect the direction of sunlight in real time and transmit the detection signal to the control system. The control system can be installed according to the installation method in the prior art. A stepper motor 3 is fixedly installed inside the shielding shell 2. The stepper motor 3 is used as a driving element to drive the tracking bracket 1 to rotate according to the detection signal of the photosensitive sensor 7.

[0041] The tracking bracket 1 has columnar grooves on both sides, and a rotating shaft 5 is rotatably connected in each columnar groove. A support frame 4 for installing photovoltaic panels 6 is fixedly connected between the two rotating shafts 5. The support frame 4 can rotate together with the rotating shafts 5, thereby realizing the angle adjustment of photovoltaic panels 6 so that photovoltaic panels 6 can track the direction of sunlight.

[0042] The tracking bracket 1 is also equipped with a moisture-proof component, which is used to provide positive pressure airflow to the rotation gap between the columnar groove and the rotating shaft 5 to prevent external moisture from entering.

[0043] As attached Figure 4 As shown, the moisture-proof component includes an air pump 8 fixedly mounted on the tracking bracket 1. The air pump 8 is used to generate compressed air. An air supply pipe 9 is connected through the input end of the air pump 8. A filter 10 is connected through the distal end of the air supply pipe 9, i.e. the end away from the air pump 8. A delivery pipe 11 is connected through the output end of the air pump 8. The delivery pipe 11 is used to deliver filtered and dried air. A U-shaped auxiliary pipe 17 is connected in parallel in the middle of the delivery pipe 11. The auxiliary pipe 17 is used to form a bypass airflow channel.

[0044] As attached Figure 1 As shown, a protective frame for protecting the filter 10 and the air pump 8 is fixedly connected to the other side of the tracking bracket 1. The protective frame can prevent external objects from colliding with or sewage from splashing onto the filter 10 and the air pump 8, thus extending the service life of the equipment.

[0045] As attached Figure 6 As shown, a first drying tank 18 is connected in series in the middle of the conveying pipe 11, and the first drying tank 18 is located between the inlet side and the outlet side of the auxiliary pipe 17. The first drying tank 18 is filled with desiccant to adsorb residual moisture in the air and dry the air.

[0046] A second drying tank 19 is connected in series in the middle of the auxiliary pipe 17. The second drying tank 19 is also filled with desiccant and serves as a backup drying tank, working alternately with the first drying tank 18. A first solenoid valve 22 for switching gas paths is installed on both ends of the delivery pipe 11, near the inlet and outlet sides of the auxiliary pipe 17. The first solenoid valve 22 controls the opening and closing of the delivery pipe 11, realizing the opening and closing of the main gas path. A second solenoid valve 23 is installed on the inlet and outlet sides of the auxiliary pipe 17, respectively. The second solenoid valve 23 controls the opening and closing of the auxiliary pipe 17, realizing the opening and closing of the bypass gas path. PTC heating rods 20 are fixedly installed inside both the first drying tank 18 and the second drying tank 19. Both the bottom of the first and second drying tanks 19 can be equipped with dehumidification solenoid valves for dehumidification, which are powered by excess electricity from the photovoltaic panels. The lead wires are encapsulated with high-temperature resistant epoxy resin. The PTC heating rods 20 have self-limiting temperature characteristics and can generate stable heat after being powered on, which is used to heat and regenerate the saturated desiccant. Each PTC heating rod 20 is covered with a stainless steel sintered mesh 21. The stainless steel sintered mesh 21 physically isolates the PTC heating rods 20 from the desiccant in the drying tank and conducts heat evenly, preventing the PTC heating rods 20 from directly contacting the desiccant and causing local overheating, burning, or agglomeration. At the same time, it can evenly transfer heat to the surrounding desiccant. The stainless steel sintered mesh 21 is fixedly connected to the bottom of the inner wall of the corresponding drying tank.

[0047] As attached Figure 4 and Figure 5 As shown, the far end of the delivery pipe 11, that is, the end away from the air pump 8, is connected to a bidirectional pipe 12. The bidirectional pipe 12 is used to divert the dried air to both sides. Both ends of the bidirectional pipe 12 are connected to a double-ended pipe 13. The double-ended pipe 13 is used to further divert the air to each annular pipe 14. Both ends of each double-ended pipe 13 are connected to an annular pipe 14. The inner wall of each annular pipe 14 is connected to multiple air outlet nozzles 15 facing the rotating shaft 5.

[0048] As attached Figure 3 As shown, each columnar groove has two annular grooves 16 on its inner wall. Annular tubes 14 are fixedly connected to the annular grooves 16, and the two annular tubes 14 are respectively sleeved on the outside of the corresponding rotating shafts 5, so that the air outlet nozzles 15 on the annular tubes 14 can be evenly arranged around the rotating shafts 5, ensuring that the positive pressure airflow covers the entire circumferential direction of the rotation gap, and achieving all-round moisture-proof sealing without dead angles.

[0049] The implementation principle of this embodiment is as follows: After the device is started, the photosensitive sensor 7 detects the direction of sunlight in real time and transmits the detection signal to the control system. The control system controls the stepper motor 3 to operate according to the signal of the photosensitive sensor 7. The stepper motor 3 drives the tracking bracket 1 to rotate. At the same time, the rotating shaft 5 drives the support frame 4 and the photovoltaic panel 6 on it to adjust the pitch angle so that the photovoltaic panel 6 is always facing the sunlight, thereby realizing the function of tracking the light.

[0050] To prevent humid air, corrosive gases, and microorganisms from entering the wastewater treatment plant environment through the rotational gap between the columnar groove and the rotating shaft 5, humidity sensors are installed at the outlets of both the first drying tank 18 and the second drying tank 19 in the moisture-proof assembly to monitor the humidity level inside the drying tanks. Furthermore, dehumidification solenoid valves for dehumidification are installed at the bottom of both the first drying tank 18 and the second drying tank 19. When the moisture-proof assembly is in operation:

[0051] The air pump 8 is powered by the excess power of the photovoltaic panel, so it will be in a continuous running state. It draws in external air through the air supply pipe 9. The air first passes through the filter 10 for preliminary filtration to remove large dust particles and some moisture. The filtered air is pressurized by the air pump 8 and then enters the delivery pipe 11.

[0052] When the first drying tank 18 is in operation, the first solenoid valve 22 is opened and the second solenoid valve 23 is closed. Air enters the first drying tank 18 along the conveying pipe 11. The desiccant in the first drying tank 18 adsorbs the residual moisture in the air and dries the air. The dried air continues to flow along the conveying pipe 11, is split by the bidirectional pipe 12, and enters the double-headed pipes 13 at both ends, and then enters each annular pipe 14. The dried air is sprayed out from multiple air outlet nozzles 15 on the annular pipe 14, forming a continuous positive pressure airflow in the rotation gap between the rotating shaft 5 and the columnar groove. This positive pressure airflow discharges any moisture that may seep in and prevents external moisture from entering, thereby achieving a moisture-proof seal.

[0053] When the desiccant in the first drying tank 18 becomes saturated with water, the humidity sensor detects that the humidity value in the first drying tank 18 exceeds the threshold and thus detects that a switch is needed. At this time, the control system controls the first solenoid valve 22 to close, cutting off the path from the delivery pipe 11 to the first drying tank 18; at the same time, the second solenoid valve 23 is opened, allowing air to enter the second drying tank 19 through the auxiliary pipe 17 for drying. After the switch is completed, the second drying tank 19 takes over the work and continues to provide dry air for the entire device.

[0054] For the first drying tank 18, which is already saturated, the control system activates the PTC heating rod 20 inside for heating and regeneration. The PTC heating rod 20 is connected to the excess power of the photovoltaic panel and generates heat. The heat is evenly transferred to the desiccant through the stainless steel sintered mesh 21, and the moisture adsorbed by the desiccant is evaporated and discharged by the dehumidification solenoid valve installed on the drying tank. After regeneration is completed, the first drying tank 18 restores its drying capacity and stands by as a backup tank. The two drying tanks work and regenerate alternately in the above manner to achieve continuous gas supply.

[0055] Example 2:

[0056] Based on the above embodiments, this embodiment discloses a photovoltaic power generation device for wastewater treatment, as shown in the attached figure. Figure 1 As shown, the track bracket 1 is also provided with a support component for auxiliary support of the support frame 4.

[0057] The support assembly includes two annular shells 24 with open tops, which are respectively fixedly connected to the outer walls of the two sides of the tracking bracket 1. Each annular shell 24 has an annular "U"-shaped guide groove on its inner wall.

[0058] As attached Figure 4 As shown, each guide groove has two support rollers 26 that convert sliding friction into rolling contact, and the support rollers 26 slide along the guide groove; each support roller 26 is rotatably connected to a support frame 25, and multiple support frames 25 are fixedly connected to both sides of the support frame 4.

[0059] The implementation principle of this embodiment is as follows: During the rotation of the support frame 4, the support component plays an auxiliary support role. The support frame 25, which is fixedly connected to both sides of the support frame 4, drives the support roller 26 to roll in the annular guide groove inside the annular shell 24. The support roller 26 can slide freely along the guide groove, thereby providing stable radial and axial support for the support frame 4, sharing the load of the rotating shaft 5, reducing rotational friction, and improving the smoothness of the tracking action.

[0060] Example 3:

[0061] Based on the above embodiments, this embodiment discloses a wastewater treatment system, including the aforementioned photovoltaic power generation device, which provides the wastewater treatment system with the electrical energy required for system operation.

[0062] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

[0064] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A photovoltaic power generation device for wastewater treatment, comprising a wastewater treatment tank and a tracking bracket (1), wherein the tracking bracket (1) is installed above the wastewater treatment tank, a shielding shell (2) is fixedly connected to one side of the tracking bracket (1), a photosensitive sensor (7) is fixedly installed in the middle of one side of the tracking bracket (1), and a stepper motor (3) is fixedly installed inside the shielding shell (2), characterized in that: The tracking bracket (1) has columnar grooves on both sides, and each columnar groove is rotatably connected to a rotating shaft (5). A support frame (4) for installing photovoltaic panels (6) is fixedly connected between the two rotating shafts (5). The tracking bracket (1) is also provided with a moisture-proof component, which is used to provide positive pressure airflow to the rotation gap between the columnar groove and the rotating shaft (5) to prevent external moisture from entering.

2. The photovoltaic power generation device for wastewater treatment according to claim 1, characterized in that: The moisture-proof component includes an air pump (8) fixedly installed on the tracking bracket (1), with an air supply pipe (9) connected through the input end of the air pump (8) and a filter (10) connected through the distal end of the air supply pipe (9); a delivery pipe (11) is connected through the output end of the air pump (8), and a protective frame for protecting the filter (10) and the air pump (8) is fixedly connected to the other side of the tracking bracket (1).

3. A photovoltaic power generation device for wastewater treatment according to claim 2, characterized in that: A U-shaped auxiliary pipe (17) is connected in parallel in the middle of the conveying pipe (11); a first drying tank (18) is connected in series in the middle of the conveying pipe (11), and the first drying tank (18) is located between the inlet side and the outlet side of the auxiliary pipe (17). The auxiliary pipe (17) is connected in series with a second drying tank (19); a first solenoid valve (22) for switching the gas path is installed on the conveying pipe (11) and near the inlet and outlet sides of the auxiliary pipe (17); a second solenoid valve (23) is installed on the inlet and outlet sides of the auxiliary pipe (17).

4. A photovoltaic power generation device for wastewater treatment according to claim 3, characterized in that: PTC heating rods (20) are fixedly installed inside the first drying tank (18) and the second drying tank (19), and each PTC heating rod (20) is covered with a stainless steel sintered mesh (21). The stainless steel sintered mesh (21) physically isolates the PTC heating rod (20) from the desiccant in the drying tank and conducts heat evenly, and the stainless steel sintered mesh (21) is fixedly connected to the bottom of the inner wall of the corresponding drying tank.

5. A photovoltaic power generation device for wastewater treatment according to claim 2, characterized in that: The far end of the delivery pipe (11) is connected to a bidirectional pipe (12), and both ends of the bidirectional pipe (12) are connected to a double-headed pipe (13). Both ends of each double-headed pipe (13) are connected to an annular pipe (14). The inner wall of each annular pipe (14) is connected to multiple air nozzles (15) facing the rotating shaft (5).

6. A photovoltaic power generation device for wastewater treatment according to claim 5, characterized in that: Each of the columnar grooves has two annular grooves (16) on its inner wall. The annular tube (14) is fixedly connected to the annular groove (16), and the two annular tubes (14) are respectively sleeved on the outside of the corresponding rotating shaft (5).

7. A photovoltaic power generation device for wastewater treatment according to claim 1, characterized in that: The track bracket (1) is also provided with a support component for assisting in supporting the support frame (4); The support assembly includes two annular shells (24) that are respectively fixedly connected to the outer walls on both sides of the tracking bracket (1).

8. A photovoltaic power generation device for wastewater treatment according to claim 7, characterized in that: Each of the annular shells (24) has an annular guide groove on its inner wall, and two support rollers (26) are rolled in each guide groove. The support rollers (26) slide along the guide groove. Each support roller (26) is rotatably connected to a support frame (25) on its outside. Multiple support frames (25) are fixedly connected to both sides of the support frame (4).

9. A wastewater treatment system, characterized by, Includes the photovoltaic power generation device as described in any one of claims 1-8, wherein the photovoltaic power generation device provides the electrical energy required for the operation of the wastewater treatment system.

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