Sludge aerobic fermentation device

Abstract

The sludge aerobic fermentation device comprises a fermentation tank, an air compressor, an aeration pipe and an annular pipe, supporting legs are arranged on the fermentation tank, an exhaust pipe and a feeding pipe are arranged at the top of the fermentation tank, a discharging pipe is arranged at the bottom of the fermentation tank, a valve is arranged on the discharging pipe, the air compressor is arranged at the top of the fermentation tank, and the aeration pipe is arranged on the annular pipe. The aeration pipe is arranged at the air outlet end of the air compressor, the annular pipe is communicated with the aeration pipe and arranged in the fermentation tank, an air port is formed in the annular pipe, the lifting assembly comprises a lifting cylinder, a rotating shaft and a spiral blade, the upper end of the lifting cylinder is fixed to the top of the fermentation tank, and the stirring assembly is arranged on the rotating shaft. An opening is formed in the bottom of the lifting cylinder, and a discharging port is formed in the upper portion of the lifting cylinder. The utility model relates to the technical field of sewage treatment, and particularly provides a sludge aerobic fermentation device which can be used for uniformly stirring, turning and throwing sludge and is beneficial to improving the fermentation efficiency of the sludge, and a discharge hole is not easy to block.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an aerobic fermentation device for sludge. Background Technology

[0002] Aerobic fermentation technology for sludge utilizes the metabolic activity of microorganisms to consume the organic matter in the sludge. During the heating process, it can effectively kill pathogens and evaporate water. Therefore, aerobic fermentation of sludge can be used as a pretreatment method for sludge utilization, as well as a pretreatment method to reduce the moisture content of sludge and increase its calorific value.

[0003] To ensure better sludge fermentation, most existing aerobic sludge fermentation devices are equipped with a stirring mechanism to agitate the sludge. However, traditional stirring mechanisms only use a drive mechanism to drive a single stirring shaft and its blades to agitate the sludge, resulting in poor stirring effect and low fermentation efficiency. Furthermore, the discharge port of existing aerobic sludge fermentation devices is prone to blockage during discharge, causing a lot of inconvenience to users. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides an aerobic fermentation device for sludge that can more evenly stir and turn the sludge, which helps to improve the fermentation efficiency of the sludge and makes the discharge port less prone to clogging.

[0005] The technical solution adopted by this utility model is as follows: This utility model provides an aerobic fermentation device for sludge, including a fermentation tank, an air compressor, an aeration pipe, and an annular pipe. The fermentation tank is equipped with support legs, an exhaust pipe and a feeding pipe at the top of the fermentation tank, a discharge pipe at the bottom of the fermentation tank, and a valve on the discharge pipe. The air compressor is located at the top of the fermentation tank, and the aeration pipe is located at the air outlet of the air compressor. The annular pipe is connected to the aeration pipe and located inside the fermentation tank. The annular pipe is equipped with an air inlet. The device also includes a lifting assembly and a stirring assembly. The lifting assembly includes a lifting cylinder, a rotating shaft, and spiral blades. The upper end of the lifting cylinder is fixed to the top of the fermentation tank, the bottom of the lifting cylinder has an opening, and the upper part of the lifting cylinder has a discharge port. The rotating shaft is rotatably located at the top of the fermentation tank, passes through the lifting cylinder, and exits through the opening. The spiral blades are sleeved on the rotating shaft. The stirring assembly is located inside the fermentation tank and outside the lifting cylinder.

[0006] Furthermore, the stirring assembly includes a stirring shaft and stirring blades. The stirring shaft is rotatably mounted on the top of the fermentation tank and extends downward into the fermentation tank. The stirring blades are mounted on the stirring shaft, and several groups of stirring blades are arranged along the length and circumference of the stirring shaft.

[0007] Furthermore, the fermenter is provided with a mounting base on top, and a motor is mounted on the mounting base. The top of the rotating shaft is fixedly connected to the output shaft of the motor.

[0008] Furthermore, the stirring assembly is provided in three groups, and the three groups of stirring assemblies are arranged in a ring array.

[0009] Furthermore, a first pulley is fitted onto the rotating shaft, and a second pulley is fitted onto each of the three sets of stirring shafts. A transmission belt is fitted onto the first pulley and the second pulley.

[0010] Furthermore, the bottom end of the rotating shaft extends downward into the feed tube, and a stirring rod is provided on the portion of the rotating shaft located inside the feed tube.

[0011] Furthermore, the fermenter is provided with a support rod at the bottom, and the lower end of the lifting cylinder is fixed to the support rod.

[0012] Furthermore, the lower end of the fermenter is inverted conical in shape.

[0013] Furthermore, the valve is a solenoid valve.

[0014] The beneficial effects of this utility model using the above structure are as follows: This solution is equipped with a lifting component, which facilitates the lifting of the bottom sludge to the upper layer, thereby helping the sludge to ferment better; This solution is equipped with a stirring component, which can further stir the sludge, thereby increasing the oxygen content and the rate of water evaporation in the sludge; This solution is equipped with a stirring rod, which can stir the sludge during discharge, thereby avoiding blockage of the discharge pipe. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0018] Figure 3 This is a front view of an embodiment of the present utility model;

[0019] Figure 4 This is a left view of an embodiment of the present utility model;

[0020] Figure 5 This is a top view of an embodiment of the present utility model;

[0021] Figure 6 for Figure 4 A sectional view along section AA;

[0022] Figure 7 for Figure 2 Enlarged view of part A in the middle.

[0023] Among them, 1. Fermentation tank, 2. Air compressor, 3. Aeration pipe, 4. Annular pipe, 5. Lifting assembly, 6. Agitating assembly, 7. Support leg, 8. Exhaust pipe, 9. Feeding pipe, 10. Discharge pipe, 11. Valve, 12. Mounting base, 13. Air port, 14. Lifting cylinder, 15. Rotating shaft, 16. Spiral blade, 17. Opening, 18. Discharge port, 19. Agitating shaft, 20. Agitating blade, 21. Motor, 22. First pulley, 23. Second pulley, 24. Transmission belt, 25. Agitating rod, 26. Support rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figures 1-7 As shown, this utility model discloses an aerobic fermentation device for sludge, comprising a fermentation tank 1, an air compressor 2, an aeration pipe 3, and an annular pipe 4. The fermentation tank 1 is equipped with support legs 7, an exhaust pipe 8 and a feeding pipe 9 at the top, and a discharge pipe 10 at the bottom with a valve 11. The air compressor 2 is located at the top of the fermentation tank 1, and the aeration pipe 3 is located at the air outlet of the air compressor 2. The annular pipe 4 is connected to the aeration pipe 3 and located inside the fermentation tank 1, with an air inlet 13 on the annular pipe 4. The device also includes a lifting assembly 5 and a stirring assembly 6. The stirring assembly 6 consists of three sets arranged in a circular array. The lower end of the fermentation tank 1 is inverted conical in shape. The valve 11 is a solenoid valve.

[0027] The lifting assembly 5 includes a lifting cylinder 14, a rotating shaft 15, and a spiral blade 16. The upper end of the lifting cylinder 14 is fixed to the top of the fermentation tank 1. The bottom of the lifting cylinder 14 has an opening 17, and the upper part of the lifting cylinder 14 has a discharge port 18. The rotating shaft 15 is rotatably mounted on the top of the fermentation tank 1, passes through the lifting cylinder 14, and exits through the opening 17. The spiral blade 16 is sleeved on the rotating shaft 15. The stirring assembly 6 is located inside the fermentation tank 1 and outside the lifting cylinder 14. The bottom of the fermentation tank 1 has a support rod 26, and the lower end of the lifting cylinder 14 is fixed to the support rod 26. The bottom end of the rotating shaft 15 extends downward into the discharge pipe 10, and the part of the rotating shaft 15 located inside the discharge pipe 10 has a stirring rod 25.

[0028] The stirring assembly 6 includes a stirring shaft 19 and stirring blades 20. The stirring shaft 19 is rotatably mounted on the top of the fermentation tank 1 and extends downward into the fermentation tank 1. The stirring blades 20 are mounted on the stirring shaft 19 and are arranged in several groups along the length and circumference of the stirring shaft 19.

[0029] The fermenter 1 is provided with a mounting base 12 on the top, and a motor 21 is provided on the mounting base 12. The top of the rotating shaft 15 is fixedly connected to the output shaft of the motor 21. A first pulley 22 is sleeved on the rotating shaft 15, and a second pulley 23 is sleeved on each of the three sets of stirring shafts 19. A transmission belt 24 is sleeved on the first pulley 22 and the second pulley 23.

[0030] In practical use, the exhaust pipe 8 is connected to an external waste gas purification device. Sludge is added to the fermentation tank 1 through the feeding pipe 9. Then, the motor 21 and air compressor 2 are started. The air compressor 2 delivers air to the fermentation tank 1 through the aeration pipe 3 and the annular pipe 4, providing a good oxygen environment for the sludge. The motor 21 drives the rotating shaft 15 to rotate, which in turn drives the spiral blades 16. The spiral blades 16 lift the sludge from the bottom layer to the top, thereby improving the fermentation efficiency. The rotation of the rotating shaft 15 also drives the first pulley 22 and the stirring rod 25. The first pulley 22 drives multiple sets of second pulleys 23 via the transmission belt 24. These second pulleys 23 simultaneously drive multiple sets of stirring shafts 19, which in turn drive the stirring blades 20. The stirring blades 20 agitate the sludge, helping to increase the oxygen content and reduce the rate of water evaporation in the sludge. The waste gas generated during fermentation is discharged through the exhaust pipe 8 and purified by the external waste gas purification device. The fermented material can be discharged through the discharge pipe 10. During the discharge process, the sludge can be stirred by the stirring rod 25, which can prevent the discharge pipe 10 from being blocked.

[0031] In summary, this solution includes a lifting component 5, which facilitates the lifting of the bottom sludge to the upper layer, thereby promoting better sludge fermentation; a stirring component 6, which further agitates the sludge, thereby increasing the oxygen content and the rate of water evaporation in the sludge; and a stirring rod 25, which agitates the sludge during discharge, thus preventing blockage of the discharge pipe 10.

[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] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sludge aerobic fermentation device, comprising a fermentation tank (1), an air compressor (2), an aeration pipe (3) and a ring pipe (4), the fermentation tank (1) is provided with a supporting leg (7), the top of the fermentation tank (1) is provided with an exhaust pipe (8) and a feeding pipe (9), the bottom of the fermentation tank (1) is provided with a discharging pipe (10), the discharging pipe (10) is provided with a valve (11), the air compressor (2) is arranged on the top of the fermentation tank (1), the aeration pipe (3) is arranged on the air outlet end of the air compressor (2), the ring pipe (4) is communicated with the aeration pipe (3) and arranged in the fermentation tank (1), the ring pipe (4) is provided with a gas port (13), characterized in that: Also include lifting assembly (5) and stirring assembly (6), the lifting assembly (5) includes lifting cylinder (14), rotating shaft (15) and spiral blade (16), the lifting cylinder (14) upper end is fixed on the top of fermentation tank (1), the bottom of lifting cylinder (14) is equipped with opening (17), the upper part of lifting cylinder (14) is equipped with discharge port (18), rotating shaft (15) is rotatably arranged on the top of fermentation tank (1) and penetrates lifting cylinder (14) and goes out from opening (17), spiral blade (16) is sleeved on rotating shaft (15), stirring assembly (6) is arranged in fermentation tank (1) and is located outside lifting cylinder (14).

2. The sludge aerobic fermentation apparatus according to claim 1, characterized by: The stirring assembly (6) includes stirring shaft (19) and stirring blade (20), the stirring shaft (19) is rotatably arranged on the top of fermentation tank (1) and extends downward into fermentation tank (1), the stirring blade (20) is arranged on the stirring shaft (19), the stirring blade (20) is provided with a plurality of groups along the length direction and the circumferential direction of the stirring shaft (19).

3. The sludge aerobic fermentation apparatus according to claim 1, characterized by: The top of fermentation tank (1) is provided with mounting seat (12), the mounting seat (12) is provided with motor (21), the top of rotating shaft (15) is fixedly connected with the output shaft of motor (21).

4. The sludge aerobic fermentation apparatus according to claim 2, characterized by: The stirring assembly (6) is provided with three groups, and the three groups of stirring assemblies (6) are arranged in annular array.

5. The sludge aerobic fermentation device according to claim 4, characterized in that: The rotating shaft (15) is sleeved with first pulley (22), and the three groups of stirring shafts (19) are each sleeved with second pulley (23), and the first pulley (22) and the second pulley (23) are sleeved with transmission belt (24).

6. The sludge aerobic fermentation apparatus according to claim 1, characterized by: The bottom end of rotating shaft (15) extends downward into the feeding pipe (10), and the stirring rod (25) is arranged on the part of rotating shaft (15) in the feeding pipe (10).

7. The sludge aerobic fermentation device according to claim 1, characterized in that: The bottom of fermentation tank (1) is provided with support rod (26), and the lower end of lifting cylinder (14) is fixed on the support rod (26).

8. The sludge aerobic fermentation device according to claim 1, characterized in that: The lower end of fermentation tank (1) is in inverted conical shape.

9. The sludge aerobic fermentation device according to claim 1, characterized in that: The valve (11) is an electromagnetic valve.

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