Microbial fermentation device for sludge treatment

Abstract

The utility model relates to the technical field of sludge treatment equipment, in particular to a microbial fermentation device for sludge treatment, which comprises a treatment box, a stirring mechanism is arranged in the treatment box, a discharging mechanism is arranged at the bottom of the treatment box, and the stirring mechanism comprises a stirring cavity formed in the treatment box. The sludge stirring device comprises a stirring cavity, a stirring shaft is rotatably arranged in the stirring cavity through a bearing, a spiral stirring blade is fixedly connected to the stirring shaft, and a plurality of stirring rods are uniformly and rotatably arranged on the inner wall of the stirring cavity. The sludge and microorganism mixing effect is effectively improved, a powerful guarantee is provided for full proceeding of a fermentation reaction, then the fermentation efficiency and the treatment quality are improved, meanwhile, under the action of the auger conveying disc, the discharging efficiency of the device is guaranteed, and the situation that the discharging pipe is blocked is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of sludge treatment equipment, specifically a microbial fermentation device for sludge treatment. Background Technology

[0002] In the field of environmental protection and resource recycling, sludge treatment has always been a crucial and highly concerned issue. Sludge, a byproduct of wastewater treatment, contains large amounts of organic matter, microorganisms, and harmful substances such as heavy metals. If not properly treated, it will not only cause serious environmental pollution but also waste usable resources. Microbial fermentation technology, as an effective sludge treatment method, can decompose organic matter in sludge through the metabolic action of microorganisms, reducing the content of harmful substances and simultaneously achieving sludge reduction and resource utilization.

[0003] However, in existing sludge microbial fermentation treatment processes, the mixing structure of traditional fermentation devices is relatively simple, making it difficult to achieve uniform mixing of sludge, resulting in low fermentation efficiency and poor treatment effects. On the other hand, the sludge discharge process after fermentation is also inconvenient, prone to blockages or uneven discharge, affecting the continuity and stability of the entire treatment process. Furthermore, if the gases generated during fermentation are not treated promptly, they may not only cause excessive internal pressure and damage the equipment, but also potentially cause secondary pollution to the environment due to toxic and harmful components in the gases. Simultaneously, during long-term operation, internal components such as the mixing and discharge mechanisms may malfunction or wear out, and traditional fermentation devices often lack a structural design that facilitates inspection and maintenance, increasing equipment maintenance costs and downtime. Therefore, we propose a microbial fermentation device for sludge treatment. Utility Model Content

[0004] The purpose of this invention is to provide a microbial fermentation device for sludge treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a microbial fermentation device for sludge treatment, comprising a treatment box, wherein a stirring mechanism is provided inside the treatment box, and a discharge mechanism is provided at the bottom of the treatment box;

[0006] The stirring structure includes a stirring chamber inside the processing tank, a stirring shaft rotatably mounted inside the stirring chamber via bearings, and a spiral stirring blade fixedly connected to the stirring shaft. An installation cavity is also provided inside the side wall of the processing tank. Several stirring rods are evenly rotatably mounted on the inner wall of the stirring chamber. Several drive shafts are evenly rotatably mounted above the inside of the processing tank. A first synchronous pulley is keyed to the drive shaft inside the installation cavity, and a second synchronous pulley is keyed to the stirring rod inside the installation cavity. The first synchronous pulley is connected to the second synchronous pulley via a synchronous belt.

[0007] Preferably, the discharge mechanism includes a discharge pipe fixedly installed at the discharge end of the processing box, an auger conveyor disc is rotatably installed inside the discharge pipe via a bearing, and a discharge port is also fixedly installed on the discharge pipe.

[0008] Preferably, a first bevel gear is connected to the stirring shaft above the bearing via a key, and a second bevel gear is connected to the drive shaft via a key. The second bevel gear meshes with the first bevel gear. Adjacent second synchronous pulleys are connected by synchronous belt drive. A first motor is also fixedly installed on the top of the processing box, and the power output shaft of the first motor is fixedly connected to the stirring shaft via a coupling.

[0009] Preferably, a bracket is fixedly installed at the bottom of the processing box, and a feed inlet is opened at the top of the processing box. A feed hopper is fixedly installed at the top of the feed inlet, and a baffle is inserted into the feed hopper.

[0010] Preferably, a second motor is also fixedly installed at the bottom of the discharge pipe, and the power output shaft of the second motor is fixedly connected to the power shaft of the auger conveyor disc through a coupling.

[0011] Preferably, an exhaust pipe is also fixedly installed on the processing box, and a pressure relief valve is fixedly installed at the outlet end of the exhaust pipe, with an activated carbon filter sleeve movably engaged at the outlet end of the pressure relief valve.

[0012] Preferably, a maintenance plate is detachably connected to the side wall of the processing box outside the mounting cavity by bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the first motor drives the stirring shaft to rotate, which in turn drives the spiral stirring blades to stir the sludge. At the same time, the meshing of the first bevel gear and the second bevel gear, as well as the transmission of the synchronous pulley and the synchronous belt, make the stirring rod rotate synchronously, thereby realizing multi-directional and uniform stirring of the sludge, effectively improving the mixing effect of sludge and microorganisms, providing a strong guarantee for the full fermentation reaction, and thus improving the fermentation efficiency and treatment quality. Driven by the second motor, the sludge in the treatment tank can be stably and smoothly transported to the discharge port for discharge, avoiding problems such as blockage that may occur during the discharge process, and ensuring the continuity and efficiency of the entire treatment process.

[0014] In addition, the baffles installed on the feed hopper can effectively reduce gas outflow during fermentation, maintain a suitable fermentation environment inside the device, reduce the impact of gas escape on the surrounding environment, and ensure the stability of the internal gas pressure, thereby improving the efficiency and reliability of the device. The pressure relief valve on the exhaust pipe can promptly discharge the gas generated inside the device during fermentation, preventing excessive gas pressure from damaging the equipment. The activated carbon filter sleeve can absorb and filter the toxic components in the discharged gas, reducing environmental pollution and achieving environmentally friendly treatment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the processing box of this utility model;

[0017] Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0018] Figure 4 For the present utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0019] The components represented by each number in the attached diagram are listed below: 1. Processing box; 2. Support frame; 3. Feed hopper; 4. Baffle; 5. Exhaust pipe; 6. Pressure relief valve; 7. Activated carbon filter sleeve; 8. Stirring shaft; 9. First bevel gear; 10. Drive shaft; 11. Second bevel gear; 12. First synchronous pulley; 13. Mounting cavity; 14. Stirring cavity; 15. Spiral stirring blade; 16. Stirring rod; 17. Second synchronous pulley; 18. Synchronous belt; 19. First motor; 20. Discharge pipe; 21. Screw conveyor disc; 22. Discharge port; 23. Second motor; 24. Inspection plate; 25. Bolt. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides a technical solution: such as Figures 1-4 The microbial fermentation device for sludge treatment shown includes a treatment box 1, a support 2 fixedly installed at the bottom of the treatment box 1, a feed inlet at the top of the treatment box 1, a feed hopper 3 at the top of the feed inlet, a baffle 4 inserted into the feed hopper 3, and a stirring mechanism inside the treatment box 1.

[0022] The stirring structure includes a stirring chamber 14 inside the processing tank 1. A stirring shaft 8 is rotatably mounted inside the stirring chamber 14 via bearings. A spiral stirring blade 15 is fixedly connected to the stirring shaft 8. A first bevel gear 9 is also keyed to the stirring shaft 8 above the bearings. An installation cavity 13 is also provided inside the side wall of the processing tank 1. Several stirring rods 16 are evenly rotatably mounted on the inner wall of the stirring chamber 14. Several drive shafts 10 are evenly rotatably mounted above the inside of the processing tank 1. A second bevel gear 11 is keyed to the drive shaft 10. Gear 11 meshes with the first bevel gear 9. A first synchronous pulley 12 is also connected to the drive shaft 10 inside the mounting cavity 13 via a key. A second synchronous pulley 17 is also connected to the stirring rod 16 inside the mounting cavity 13 via a key. The first synchronous pulley 12 is connected to the second synchronous pulley 17 via a synchronous belt 18. Two adjacent second synchronous pulleys 17 are connected via a synchronous belt 18. A first motor 19 is also fixedly installed on the top of the processing box 1. The power output shaft of the first motor 19 is connected to the stirring shaft 8 via a coupling.

[0023] During sludge fermentation, the sludge needs to be stirred. The worker pours the sludge into the stirring chamber 14 through the feed hopper 3. At this time, the first motor 19 is started to drive the stirring shaft 8 to rotate, which in turn drives the spiral stirring blade 15 to rotate. At the same time, under the action of the first bevel gear 9, the second bevel gear 11, the first synchronous pulley 12, the second synchronous pulley 17, and the synchronous belt 18, the stirring rod 16 can be driven to rotate, so as to stir the sludge more evenly and ensure the subsequent fermentation efficiency. Meanwhile, under the action of the baffle 4, the gas escape during fermentation can be reduced, ensuring the efficiency of the device.

[0024] The bottom discharge end of the processing box 1 is also equipped with a discharge mechanism;

[0025] The discharge mechanism includes a discharge pipe 20 fixedly installed at the discharge end of the processing box 1. Inside the discharge pipe 20, an auger conveyor disc 21 is rotatably installed via bearings. A second motor 23 is also fixedly installed at the bottom of the discharge pipe 20. The power output shaft of the second motor 23 is fixedly connected to the power shaft of the auger conveyor disc 21 via a coupling. A discharge port 22 is also fixedly installed on the discharge pipe 20.

[0026] In actual use, when it is necessary to discharge the treated sludge, the staff starts the second motor 23 and uses the auger conveyor 21 to carry the sludge inside the treatment box 1 into the discharge pipe 20, and then discharges it through the discharge port 22, thereby completing the unloading work.

[0027] An exhaust pipe 5 is also fixedly installed on the processing box 1. A pressure relief valve 6 is fixedly installed at the outlet end of the exhaust pipe 5. An activated carbon filter sleeve 7 is movably connected to the outlet end of the pressure relief valve 6. During the fermentation process, gas will be generated inside the processing box 1. If the gas is not discharged in time, it is easy to cause excessive gas pressure inside the processing box 1, which may lead to damage to the processing box 1. At this time, the gas can be discharged under the action of the pressure relief valve 6. At the same time, the activated carbon filter sleeve 7 can absorb and filter the toxic components in the gas.

[0028] A maintenance plate 24 is detachably connected to the side wall of the treatment box 1 on the outside of the mounting cavity 13 via bolts 25, which facilitates the maintenance of the internal components of the mounting cavity 13 by the staff, thereby ensuring the efficiency of the treatment box 1.

[0029] Working Principle: During sludge fermentation, the sludge is first poured into the mixing chamber 14 of the treatment tank 1 through the feed hopper 3. Inserting a baffle 4 reduces gas outflow during fermentation. The first motor 19 mounted on the top of the treatment tank 1 is started, and its power output shaft drives the mixing shaft 8 to rotate via a coupling. The spiral mixing blades 15 on the mixing shaft 8 rotate accordingly to mix the sludge. Simultaneously, the first bevel gear 9 located above the bearing on the mixing shaft 8 rotates, driving the second bevel gear 11 meshing with it to rotate, which in turn causes the drive shaft 10 to rotate. The first synchronous pulley 12 on the drive shaft 10 drives the second synchronous pulley 17 on the mixing rod 16 to rotate via the synchronous belt 18, ultimately driving the mixing rod 16 to rotate, achieving more uniform mixing of the sludge and ensuring subsequent fermentation efficiency.

[0030] After fermentation is complete, the sludge needs to be discharged. Start the second motor 23 installed at the bottom of the discharge pipe 20 at the discharge end of the treatment box 1. Its power output shaft drives the auger conveyor 21 to rotate through the coupling, bringing the sludge in the treatment box 1 into the discharge pipe 20, and then discharging it through the discharge port 22.

[0031] During fermentation, gas will be generated in the treatment chamber 1. To prevent excessive gas pressure from damaging the treatment chamber 1, the pressure relief valve 6 on the exhaust pipe 5 will release the gas in time. When the gas passes through the activated carbon filter sleeve 7, the toxic components in it are absorbed and filtered to ensure safe emission.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A microbial fermentation device for sludge treatment, comprising a treatment tank (1), characterized in that: The processing box (1) is equipped with a stirring mechanism inside, and the processing box (1) is equipped with a discharge mechanism at the bottom; The stirring mechanism includes a stirring chamber (14) inside the processing box (1). A stirring shaft (8) is rotatably mounted inside the stirring chamber (14) via a bearing. A spiral stirring blade (15) is fixedly connected to the stirring shaft (8). An installation cavity (13) is also provided inside the side wall of the processing box (1). Several stirring rods (16) are also rotatably mounted on the inner wall of the stirring chamber (14). Several drive shafts (10) are also rotatably mounted on the upper part of the processing box (1). A first synchronous pulley (12) is connected to the drive shaft (10) inside the installation cavity (13) via a key. A second synchronous pulley (17) is connected to the stirring rod (16) inside the installation cavity (13) via a key. The first synchronous pulley (12) is connected to the second synchronous pulley (17) via a synchronous belt (18).

2. The microorganism fermentation device for sludge treatment according to claim 1, characterized in that: The discharge mechanism includes a discharge pipe (20) fixedly installed at the discharge end of the processing box (1), and an auger conveyor disc (21) is rotatably installed inside the discharge pipe (20) via a bearing. A discharge port (22) is fixedly installed on the discharge pipe (20).

3. The microorganism fermentation device for sludge treatment according to claim 1, characterized in that: A first bevel gear (9) is keyed on the stirring shaft (8) above the bearing. A second bevel gear (11) is keyed on the drive shaft (10). The second bevel gear (11) meshes with the first bevel gear (9). Two adjacent second synchronous pulleys (17) are connected by a synchronous belt (18). A first motor (19) is fixedly installed on the top of the processing box (1). The power output shaft of the first motor (19) is fixedly connected to the stirring shaft (8) through a coupling.

4. The microbial fermentation device for sludge treatment according to claim 1, characterized in that: The bottom of the processing box (1) is fixedly installed with a bracket (2), and the top of the processing box (1) is also provided with a feed inlet. A feed hopper (3) is fixedly installed on the top of the feed inlet, and a baffle (4) is inserted into the feed hopper (3).

5. The microbial fermentation device for sludge treatment according to claim 2, characterized in that: The bottom of the discharge pipe (20) is also fixedly installed with a second motor (23), and the power output shaft of the second motor (23) is fixedly connected to the power shaft of the auger conveyor (21) through a coupling.

6. The microbial fermentation device for sludge treatment according to claim 1, characterized in that: An exhaust pipe (5) is also fixedly installed on the processing box (1). A pressure relief valve (6) is fixedly installed at the outlet end of the exhaust pipe (5). An activated carbon filter sleeve (7) is movably connected to the outlet end of the pressure relief valve (6).

7. The microbial fermentation device for sludge treatment according to claim 1, characterized in that: The processing box (1) has a maintenance plate (24) that is detachably connected to the side wall of the installation cavity (13) by bolts (25).

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