Oily wastewater sludge fermentation device

Abstract

The utility model relates to the field of oily wastewater treatment equipment, and discloses an oily wastewater sludge fermentation device which comprises a box body, a top cover is arranged at the top of the box body, and a plurality of layers of stirring mechanisms are arranged in the box body and at the top of the top cover; the multi-layer stirring mechanism comprises two fixing discs, a motor, three second gears and a fixing column, the two fixing discs are fixedly connected to the upper side and the lower side of the interior of the top cover, rack discs are fixedly connected to the interiors of the two fixing discs, and a protection box is fixedly connected to the upper side wall of the top fixing disc. And the bottom wall of the motor is fixedly connected to the inner bottom wall of the protection box. The multi-layer stirring mechanism is arranged, so that the problems that the fermentation reaction is unbalanced and the fermentation effect is influenced can be solved, and the stirring rods are fixedly connected to the outer sides of the bottom ends of the first connecting rods, so that the transmission efficiency of oxygen from a gas phase to a liquid phase is effectively improved, and sufficient oxygen for metabolic activity of microorganisms is ensured.

Description

Technical Field

[0001] This utility model relates to the field of oily wastewater treatment equipment, and in particular to an oily wastewater sludge fermentation device. Background Technology

[0002] The treatment of oily wastewater generates a large amount of oily sludge. This sludge not only contains high concentrations of petroleum-based substances but may also contain heavy metals, pathogens, and other harmful substances, making it highly polluting. Statistics show that my country produces millions of tons of oily sludge annually, and this figure is increasing year by year. If not properly disposed of, pollutants in the oily sludge can seep into the soil and groundwater, causing long-term environmental damage.

[0003] When treating oily wastewater, the sludge contains a complex composition with varying densities, making it difficult to mix thoroughly within the fermentation unit. Dense particles settle at the bottom, while less dense substances float, failing to make adequate contact with the substrate. This leads to uneven fermentation, potentially causing localized excessively high or low substrate concentrations, inhibiting microbial activity, reducing fermentation efficiency, and impacting the overall fermentation effect. During fermentation, gravity causes sludge particles to gradually settle to the bottom of the unit. The accumulated and compacted sludge reduces its aeration and permeability. This hinders sufficient contact between microorganisms and the substrate, affecting the fermentation reaction and reducing the efficiency of microbial decomposition of pollutants in the oily sludge. This necessitates shutdown for manual cleaning, impacting the unit's normal operation and treatment efficiency. Utility Model Content

[0004] The main purpose of this invention is to provide an oily wastewater sludge fermentation device that can effectively solve the problems of uneven fermentation reaction, excessively high or low local substrate concentration, inhibition of microbial activity, reduced fermentation efficiency, and reduced efficiency of microbial decomposition of pollutants in oily sludge, requiring shutdown for manual cleaning, which affects the normal operation and processing efficiency of the device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an oily wastewater sludge fermentation device, comprising a box body, a top cover being provided on the top of the box body, and a multi-layer stirring mechanism being provided inside the box body and on the top of the top cover;

[0006] The multi-layer stirring mechanism includes: two fixed discs, a motor, three second gears, and fixed columns. The two fixed discs are fixedly connected to the upper and lower sides of the inside of the top cover. A rack disc is fixedly connected inside the two fixed discs. A protective box is fixedly connected to the upper side wall of the top fixed disc. The bottom wall of the motor is fixedly connected to the bottom wall of the inner side of the protective box. A rotating rod is fixedly connected to the output end of the motor. A first gear is fixedly connected to the outer side of the top of the rotating rod. The outer side of the first gear meshes with the three second gears. The outer sides of the three second gears mesh with the inside of the rack disc. A first connecting rod is fixedly connected to the inside of each of the three second gears. A stirring rod is fixedly connected to the outer side of the bottom end of each of the three first connecting rods.

[0007] Furthermore, a fixed column is fixedly connected to the bottom end of the rotating rod. Each fixed column has four guide rail grooves inside. Each of the four guide rail grooves has a first slider inside. A stirring vessel is fixedly connected to the outside of the four first sliders. The bottom wall of the stirring vessel is fixedly connected to the outside of the fixed column by bolts.

[0008] Furthermore, a feed pipe is connected through the top of the top cover, a guide plate is fixedly connected to the bottom wall of the box, a discharge plate is connected through the front side wall of the box, and a screening plate is fixedly connected inside the discharge plate.

[0009] Furthermore, a fixing plate is fixedly connected to the rear side wall of the box, an air tank is fixedly connected to the rear side wall of the fixing plate, a bottom plate is fixedly connected to the bottom of the rear side wall of the box, and an air pump is installed on the top of the bottom plate.

[0010] Furthermore, the output end of the air pump is fixedly connected to a delivery pipe, the top end of which is connected to the left side wall of the air tank, and the bottom of the air tank is connected to an outlet pipe. The front ends of the two outlet pipes are connected to the inner bottom wall of the box, and the top ends of the outlet pipes are connected to nozzles. The outer tops of the multiple nozzles are connected to the inside of the guide plate.

[0011] Furthermore, a connecting ring is fixedly connected to the outer side of the bottom end of the rotating rod, and a second connecting rod is fixedly connected to both the left and right sides of the connecting ring. A fixing block is fixedly connected to the other end of each of the two second connecting rods, and two guide rail plates are fixedly connected to the other side of each fixing block.

[0012] Furthermore, a limit plate is fixedly connected to the bottom of each of the four guide rail plates, and two second sliders are slidably connected inside each guide rail plate. A support plate is fixedly connected to the outer wall of each pair of second sliders, and a scraper is fixedly connected to the outer wall of each support plate. The outer sides of the four scrapers are correspondingly arranged to the interior of the housing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, through its multi-layered stirring mechanism, solves the problems of uneven fermentation reactions, potentially leading to excessively high or low local substrate concentrations, inhibiting microbial activity, reducing fermentation efficiency, and affecting fermentation results. Stirring rods are fixedly connected to the outer bottom of the first connecting rod, causing them to perform complex circular motions inside the tank. This motion allows the stirring rods to agitate the oily wastewater sludge at different locations within the tank. The rotation of the mixing vessel further enhances the agitation effect on the oily wastewater sludge, making the sludge flow within the tank more complex and thorough, improving mixing uniformity, and effectively increasing the oxygen transfer efficiency from the gas phase to the liquid phase, ensuring sufficient oxygen for microbial metabolic activities.

[0015] 2. The system, equipped with an air tank, air pump, nozzles, guide rails, support plates, and scrapers, addresses the problem of reduced microbial decomposition efficiency of pollutants in oily sludge, necessitating shutdowns for manual cleaning and impacting the normal operation and processing efficiency of the unit. Gas is delivered to the bottom wall of the tank via an outlet pipe at the bottom of the air tank, and a nozzle at the top of the outlet pipe sprays the gas into the sludge in a dispersed manner. The nozzles penetrate a guide plate, which guides the flow of gas and sludge, ensuring more even gas distribution. Aeration aims to provide sufficient oxygen for aerobic microorganisms, promoting their metabolic activity, accelerating the sludge fermentation process, and thus effectively improving the decomposition efficiency of pollutants in oily sludge and enhancing the treatment effect of the fermentation unit on oily sludge.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an oily wastewater sludge fermentation device proposed in this utility model;

[0018] Figure 2 This is an internal cross-sectional view of an oily wastewater sludge fermentation device proposed in this utility model.

[0019] Figure 3 This is a structural diagram of a multi-layer stirring mechanism for an oily wastewater sludge fermentation device proposed in this utility model;

[0020] Figure 4 This is a structural diagram of the second gear of an oily wastewater sludge fermentation device proposed in this utility model;

[0021] Figure 5 This is a structural diagram of a fixed column for an oily wastewater sludge fermentation device proposed in this utility model;

[0022] Figure 6 This is a rear structural diagram of an oily wastewater sludge fermentation device proposed in this utility model;

[0023] Figure 7 This is a schematic diagram of the gas outlet pipe of an oily wastewater sludge fermentation device proposed in this utility model;

[0024] Figure 8 This is a structural diagram of the second connecting rod of an oily wastewater sludge fermentation device proposed in this utility model;

[0025] Figure 9 This is a structural diagram of the guide rail plate of an oily wastewater sludge fermentation device proposed in this utility model;

[0026] Figure 10 This is a structural diagram of the limiting plate of an oily wastewater sludge fermentation device proposed in this utility model.

[0027] Legend:

[0028] 1. Housing; 2. Multi-layer stirring mechanism; 201. Fixed plate; 202. Protective box; 203. Motor; 204. Rack and pinion; 205. Rotating rod; 206. First gear; 207. Second gear; 208. First connecting rod; 209. Stirring rod; 210. Fixed column; 211. Guide rail groove; 212. First slider; 213. Stirring vessel; 3. Top cover; 4. Guide plate; 5. Discharge plate; 6. Screening plate; 7. Fixed plate; 8. Air tank; 9. Bottom plate; 10. Air pump; 11. Conveying pipe; 12. Air outlet pipe; 13. Nozzle; 14. Connecting ring; 15. Second connecting rod; 16. Fixed block; 17. Guide rail plate; 18. Limiting plate; 19. Second slider; 20. Support plate; 21. Scraper; 22. Feed pipe. Detailed Implementation

[0029] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0030] like Figure 1 - Figure 5 As shown: An oily wastewater sludge fermentation device includes a box body 1, with a top cover 3 on the top of the box body 1. The top cover 3 allows for easy opening of the top of the box body 1 for cleaning and replacement of the internal components. A multi-layer stirring mechanism 2 is installed inside the box body 1 and on the top of the top cover 3.

[0031] The multi-layer stirring mechanism 2 includes: two fixed disks 201, a motor 203, three second gears 207, and a fixed column 210. The two fixed disks 201 are fixedly connected to the upper and lower sides of the inside of the top cover 3. A rack disk 204 is fixedly connected inside the two fixed disks 201. The fixed disks 201 support and fix the rack disk 204 inside, preventing the rack disk 204 from being driven by the internal device. A protective box 202 is fixedly connected to the upper side wall of the top fixed disk 201. The bottom wall of the motor 203 is fixedly connected to the inner bottom wall of the protective box 202, providing external protection for the motor 203 inside.

[0032] A rotating rod 205 is fixedly connected to the output end of the motor 203. A first gear 206 is fixedly connected to the outer side of the top of the rotating rod 205. The outer side of the first gear 206 meshes with three second gears 207. The outer side of the three second gears 207 meshes with the inside of the rack disc 204. When the motor 203 is started, the output end of the motor 203 will drive the rotating rod 205 to rotate. Since the top of the rotating rod 205 is connected to the first gear 206, the first gear 206 will rotate synchronously and mesh with the second gears 207, driving the second gears 207 to rotate inside the rack disc 204.

[0033] Each of the three second gears 207 has a first connecting rod 208 fixedly connected inside. Each of the three first connecting rods 208 has a stirring rod 209 fixedly connected to the outer side of its bottom end. When the second gear 207 is driven, the first connecting rod 208 inside it will rotate accordingly, and drive the stirring rod 209 on the outer side of the first connecting rod 208 to rotate, so as to stir the oily wastewater sludge inside the tank 1, fully mix the different components in the sludge, and avoid the sludge from stratifying.

[0034] A fixed post 210 is fixedly connected to the bottom end of the rotating rod 205. Each fixed post 210 has four guide rail grooves 211 inside, and each of the four guide rail grooves 211 contains a first slider 212. A stirring vessel 213 is fixedly connected to the outside of the four first sliders 212. The bottom wall of the stirring vessel 213 is fixedly connected to the outside of the fixed post 210 by bolts. The guide rail grooves 211 inside the fixed post 210 provide mounting holes for the first sliders 212, allowing the first sliders 212 to slide upwards. The external mixing vessel 213 is installed inside the guide rail groove 211 and fixed to the bottom of the mixing vessel 213 by bolts. This allows for easy disassembly when replacement or maintenance is required. When the fixed column 210 is rotated by the rotating rod 205, it will also rotate the external mixing vessel 213. The rotation of the mixing vessel 213 further enhances the mixing effect on the oily wastewater sludge, making the flow of sludge in the tank 1 more complex and thorough.

[0035] like Figure 1 - Figure 6 As shown, a feed pipe 22 is connected through the top of the top cover 3, which connects to an external pipeline to transport sewage and sludge into the interior of the tank 1 for treatment. A guide plate 4 is fixedly connected to the bottom wall of the interior of the tank 1, and a discharge plate 5 is connected through the front side wall of the tank 1. A screen plate 6 is fixedly connected inside the discharge plate 5. The guide plate 4 guides the sludge and impurities inside, allowing the mixed sludge and impurities to flow into the discharge plate 5. When the sewage inside the tank 1 is discharged, the sewage and sludge are filtered through the screen plate 6 inside the discharge plate 5.

[0036] like Figure 1 - Figure 7 As shown, a fixing plate 7 is fixedly connected to the rear side wall of the housing 1, and an air tank 8 is fixedly connected to the rear side wall of the fixing plate 7. The fixing plate 7 is used to fix the air tank 8 to the rear side wall of the housing 1. A base plate 9 is fixedly connected to the bottom of the rear side wall of the housing 1, and an air pump 10 is installed on the top of the base plate 9. The base plate 9 is used to support the air pump 10 at the bottom and to fix the air pump 10 to the rear side wall of the housing 1.

[0037] The output end of the air pump 10 is fixedly connected to a delivery pipe 11. The top end of the delivery pipe 11 is connected to the left side wall of the air storage tank 8. Air outlet pipes 12 are connected to the bottom of the air storage tank 8. The front ends of two air outlet pipes 12 are connected to the inner bottom wall of the housing 1. The top ends of the air outlet pipes 12 are connected to nozzles 13. The outer tops of multiple nozzles 13 are connected to the inside of the guide plate 4. When the air pump 10 is started, it transmits the generated gas through the delivery pipes 11 to the inside of the air storage tank 8, where the gas is stored. When needed, the gas is delivered through the air storage tank 8 to the inside of the air outlet pipes 12 and sprayed into the inside of the housing 1 through the nozzles 13 at the front end of the air outlet pipes 12, thus distributing the gas more evenly in the sludge. The purpose of aeration is to provide sufficient oxygen for aerobic microorganisms, promote their metabolic activities, and accelerate the fermentation process of the sludge.

[0038] like Figure 1 - Figure 10 As shown, a connecting ring 14 is fixedly connected to the outer side of the bottom end of the rotating rod 205. A second connecting rod 15 is fixedly connected to both the left and right sides of the connecting ring 14. A fixing block 16 is fixedly connected to the other end of each of the two second connecting rods 15. When the rotating rod 205 rotates, the connecting ring 14 on the outer side of its bottom end rotates accordingly, and the fixing block 16 is driven to rotate through the second connecting rod 15.

[0039] Two guide rails 17 are fixedly connected to the other side of each fixed block 16. Limiting plates 18 are fixedly connected to the bottom of each of the four guide rails 17. Two second sliders 19 are slidably connected inside each guide rail 17. A support plate 20 is fixedly connected to the outer wall of each pair of second sliders 19. A scraper 21 is fixedly connected to the outer wall of each support plate 20. The outer sides of the four scrapers 21 correspond to the interior of the box 1. The guide rails 17 on the fixed block 16 also rotate, and the second sliders 19 inside the guide rails 17 can slide, so that the support plates 20 and scrapers 21 can make circumferential movements with the guide rails 17. The outer sides of the scrapers 21 correspond to the interior of the box 1. During the movement, they scrape the inner wall of the box 1 to prevent sludge from adhering to the inner wall, ensuring the cleanliness of the inside of the device, and also helping to improve the uniformity of mixing.

[0040] It should be noted that this utility model is a fermentation device for oily wastewater sludge. First, the motor 203 and the air pump 10 are connected to an external power source and control terminal to supply power to the device.

[0041] When wastewater is fed into the tank 1 through the feed pipe 22, the motor 203 starts, and its output drives the rotating rod 205 to rotate. Since a first gear 206 is fixedly connected to the outer side of the top of the rotating rod 205, the first gear 206 rotates along with the rotating rod 205. The outer side of the first gear 206 meshes with three second gears 207. When the first gear 206 rotates, it drives the three second gears 207 to rotate around their own axis. Simultaneously, the outer sides of the three second gears 207 mesh with a rack and pinion plate 204 fixed inside the two fixed discs 201. Under the constraint of the rack and pinion plate 204, the three second gears 207 rotate around the rotating rod 205 while rotating on their own axes.

[0042] During the rotation and revolution of the three second gears 207, the first connecting rods 208 fixedly connected inside them also move. Since stirring rods 209 are fixedly connected to the outer bottom end of each of the first connecting rods 208, the stirring rods 209 will perform complex circular motions inside the tank 1. This motion allows the stirring rods 209 to stir the oily wastewater sludge at different locations within the tank 1, fully mixing the different components in the sludge, preventing sludge stratification, promoting uniform contact between microorganisms and the substrate, and providing good mixing conditions for the fermentation reaction.

[0043] In addition, when the fixed column 210 is driven to rotate by the rotating rod 205, it will also drive the outer mixing vessel 213 to rotate. The rotation of the mixing vessel 213 further enhances the mixing effect on the oily wastewater sludge, making the flow of sludge in the tank 1 more complex and thorough, and improving the uniformity of mixing.

[0044] An air pump 10 is installed on the base plate 9. After the air pump 10 is started, it delivers air or other required gases to the air storage tank 8 through the delivery pipe 11. The air storage tank 8 serves to store and stabilize the gas pressure. The air outlet pipe 12 at the bottom of the air storage tank 8 delivers the gas to the bottom wall inside the tank 1. The nozzle 13 at the top of the front end of the air outlet pipe 12 sprays the gas into the sludge in a dispersed form. The nozzle 13 passes through the guide plate 4, which guides the flow of gas and sludge, making the gas more evenly distributed in the sludge. The purpose of aeration is to provide sufficient oxygen for aerobic microorganisms, promote their metabolic activities, and accelerate the fermentation process of the sludge.

[0045] When impurities inside the chamber 1 are carried by the gas, some of them will adhere to the inner wall of the chamber 1. When the rotating rod 205 rotates, the connecting ring 14 on its outer bottom end rotates accordingly, driving the fixed block 16 to rotate through the second connecting rod 15. The guide rail plate 17 on the fixed block 16 also rotates, and the second slider 19 inside the guide rail plate 17 can slide, allowing the support plate 20 and the scraper 21 to make circumferential movements with the guide rail plate 17. The outer side of the scraper 21 corresponds to the inside of the chamber 1, and scrapes the inner wall of the chamber 1 during the movement to prevent sludge from adhering to the inner wall, ensuring the cleanliness of the inside of the device, and also helping to improve the uniformity of stirring.

[0046] The fermented sludge flows to the bottom of the chamber 1 under the action of gravity and stirring, and is guided by the guide plate 4 to the discharge plate 5. The sieve plate 6 inside the discharge plate 5 filters the sludge, screening out the fermentation products that meet the requirements and discharging them from the device, while larger impurities or insufficiently fermented substances are intercepted, realizing solid-liquid separation or separation of substances of different particle sizes, and ensuring the quality of the output.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An oil-containing wastewater sludge fermentation device comprising a box (1), characterized in that: The top of the box (1) is provided with a top cover (3), and the inside of the box (1) and the top of the top cover (3) are provided with a multi-layer stirring mechanism (2); The multi-layer stirring mechanism (2) comprises two fixed discs (201), a motor (203), three second gears (207) and a fixed column (210), the two fixed discs (201) are fixedly connected to the upper and lower sides of the inside of the top cover (3), the inside of each of the two fixed discs (201) is fixedly connected with a rack disc (204), the upper side wall of the fixed disc (201) is fixedly connected with a protection box (202), the bottom wall of the motor (203) is fixedly connected to the inside bottom wall of the protection box (202), the output end of the motor (203) is fixedly connected with a rotating rod (205), the top end outer side of the rotating rod (205) is fixedly connected with a first gear (206), the outer side of the first gear (206) is engaged with the three second gears (207), the outer sides of the three second gears (207) are engaged with the inside of the rack disc (204), the inside of each of the three second gears (207) is fixedly connected with a first connecting rod (208), and the bottom end outer side of each of the three first connecting rods (208) is fixedly connected with a stirring rod (209).

2. The oil-containing wastewater sludge fermentation device according to claim 1, characterized in that: The bottom end of the rotating rod (205) is fixedly connected with the fixed column (210), the inside of the fixed column (210) is provided with four guide rail grooves (211), the inside of each of the four guide rail grooves (211) is provided with a first sliding block (212), the outer side of each of the four first sliding blocks (212) is fixedly connected with a stirring kettle (213), and the bottom wall of the stirring kettle (213) is fixedly connected to the outer side of the fixed column (210) through bolts.

3. The oil-containing wastewater sludge fermentation device according to claim 1, characterized in that: The top of the top cover (3) is connected with a feeding pipe (22) in a penetrating manner, the inside bottom wall of the box (1) is fixedly connected with a flow guide plate (4), the front side wall of the box (1) is connected with a discharging plate (5) in a penetrating manner, and the inside of the discharging plate (5) is fixedly connected with a screening plate (6).

4. The oil-containing wastewater sludge fermentation device according to claim 1, characterized in that: The rear side wall of the box (1) is fixedly connected with a fixed plate (7), the rear side wall of the fixed plate (7) is fixedly connected with an air storage tank (8), the rear side wall bottom of the box (1) is fixedly connected with a bottom plate (9), and the top of the bottom plate (9) is provided with an air pump (10).

5. An oil-containing wastewater sludge fermentation apparatus according to claim 4, characterized by: The output end of the air pump (10) is fixedly connected with a conveying pipe (11), the top end of the conveying pipe (11) is connected to the left side wall of the air storage tank (8) in a communicating manner, the bottom of the air storage tank (8) is connected with air outlet pipes (12) in a penetrating manner, the front ends of the two air outlet pipes (12) are connected to the inside bottom wall of the box (1) in a penetrating manner, the front end top of the air outlet pipe (12) is connected with a spray head (13) in a communicating manner, and the top outer side of the plurality of spray heads (13) is connected to the inside of the flow guide plate (4) in a penetrating manner.

6. The oil-containing wastewater sludge fermentation device according to claim 1, characterized in that: The bottom end of the rotating rod (205) is fixedly connected with a connecting ring (14), the left and right sides of the connecting ring (14) are fixedly connected with second connecting rods (15), the other ends of the two second connecting rods (15) are fixedly connected with fixed blocks (16), and the other sides of the fixed blocks (16) are fixedly connected with two guide rail plates (17).

7. An oil-containing wastewater sludge fermentation apparatus according to claim 6, characterized by: The bottoms of the four guide rail plates (17) are fixedly connected with limiting plates (18), the interiors of the guide rail plates (17) are slidably connected with two second sliding blocks (19), the outer side walls of every two second sliding blocks (19) are fixedly connected with support plates (20), the outer side walls of the support plates (20) are fixedly connected with scrapers (21), and the outer sides of the four scrapers (21) are correspondingly arranged with the interior of the box body (1).

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