Biological sludge digestion device

Abstract

The utility model discloses a biological sludge digestion device, which belongs to the technical field of biological sludge and comprises a support frame, the top of the support frame is fixedly connected with a digestion reaction kettle, a feed port is fixedly mounted on the outer surface of the digestion reaction kettle, a discharge port is fixedly mounted at the bottom of the digestion reaction kettle, and an upper-layer stirring component is arranged in the digestion reaction kettle. The lower-layer stirring assembly in the digestion reaction kettle realizes uniform stirring and mixing of sludge through an upper-layer stirring system and a lower-layer stirring system (the upper-layer stirring assembly and the lower-layer stirring assembly), so that sufficient contact between the sludge and digestion liquid or microorganisms is ensured, and the biological digestion efficiency is improved; the device realizes circular stirring and mixing of sludge. The contact between the sludge and digestive juice or microorganisms is further enhanced, the digestion efficiency is improved, and sludge precipitation and caking are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of biological sludge, and more specifically to a biological sludge digestion device. Background Art

[0002] Biological sludge is a by-product of the sewage treatment process. It is a sludge-like substance containing microorganisms and organic matter produced by biological reactions in a biochemical reaction tank. As new organic matter is continuously input during the sewage treatment process, the biological sludge will continue to increase.

[0003] In the process of sewage treatment, biological sludge is an indispensable product. It is mainly composed of residual sludge produced by activated sludge in the biological reaction process, containing a large amount of organic matter, microbial communities and some inorganic particles. Traditional biological sludge treatment methods, such as landfill and incineration, can reduce the volume and harm of sludge to a certain extent, but there are many disadvantages. The landfill method requires a lot of land and is prone to secondary pollution of soil and groundwater; the incineration method consumes a lot of energy and may produce harmful gas emissions. In recent years, biodigestion technology has received widespread attention as an emerging biological sludge treatment method. This technology uses the metabolism of microorganisms to decompose organic matter in biological sludge into inorganic matter and stable substances, thereby achieving sludge reduction, stabilization and harmlessness. However, in the actual application of the existing biological sludge digestion device, as new organic matter is continuously input during the sewage treatment process, the biological sludge will continue to increase, but its reduction efficiency is low during the sludge treatment process, which in turn affects the effect of biological sludge treatment. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a biological sludge digestion device to solve the above-mentioned problems.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biological sludge digestion device, comprising a support frame, the top of the support frame is fixedly connected to a digestion reactor, the outer surface of the digestion reactor is fixedly installed with a feed port, the bottom of the digestion reactor is fixedly installed with a discharge port, the interior of the digestion reactor is provided with an upper stirring assembly, the upper stirring assembly comprises a slewing support, a driving gear, a driven gear and a stirring blade, the top of the digestion reactor is fixedly connected to a slewing support, the bottom inner wall of the slewing support is rotatably connected with a driving gear and two driven gears, the two driven gears are meshed with the driving gear and meshed with the slewing support, the bottoms of the two driven gears are fixedly connected with stirring blades, the two stirring blades are located inside the digestion reactor and at the bottom of the slewing support, a first motor is fixedly installed on the top of the slewing support, the output end of the first motor passes through the slewing support and is fixedly connected to the driving gear, and a lower stirring assembly is provided inside the digestion reactor.

[0008] Preferably, a movable groove is provided on the inner wall of the bottom of the rotary support, and the two stirring blades are movably connected to the movable groove.

[0009] Preferably, a filter screen is fixedly connected to the interior of the digestion reactor, and the feed inlet is located below the slewing support.

[0010] Preferably, the lower layer stirring assembly includes a second motor, a first bevel gear, a second bevel gear and a rotating blade. The second motor is fixedly installed on the outer surface of the digestion reactor, the inner wall of the digestion reactor is rotatably connected to the first bevel gear, the output end of the second motor is fixedly connected to the first bevel gear, the outer surface of the filter is rotatably connected to the rotating blade, the top of the rotating blade is fixedly connected to the second bevel gear, and the second bevel gear is vertically meshed with the first bevel gear.

[0011] Preferably, a power source is fixedly mounted on the outer surface of the digestion reactor, a heat conducting wire is wound inside the digestion reactor, and the power source is electrically connected to the heat conducting wire.

[0012] Preferably, a circulation pipe is fixedly connected to the outer surface of the digestion reactor, and the circulation pipe is in the shape of a "mouth". A circulation pump is fixedly installed on the outer surface of the digestion reactor, and the circulation pipe is fixedly connected to the circulation pump. A feeding port is fixedly connected to the outer surface of the circulation pipe, and a plurality of equidistantly distributed through holes are opened on the outer surface of the circulation pipe located inside the digestion reactor.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a biological sludge digestion device having the following

[0015] Beneficial effects:

[0016] 1. The biological sludge digestion device realizes uniform stirring and mixing of sludge through the upper and lower stirring systems (upper stirring assembly and lower stirring assembly), which ensures sufficient contact between sludge and digestion liquid or microorganisms, thereby improving the efficiency of biological digestion. Through the circulation pump and circulation pipeline, the device realizes circulating stirring and mixing of sludge. This further enhances the contact between sludge and digestion liquid or microorganisms, improves digestion efficiency, and helps prevent sludge sedimentation and agglomeration.

[0017] 2. This biological sludge digestion device provides the required heat for the sludge by winding the heat-conducting wire inside the digestion reactor, maintaining the temperature conditions required for the digestion reaction. This helps to promote the activity of microorganisms and improve the digestion efficiency. By improving the digestion efficiency, the device can reduce the discharge and treatment costs of biological sludge, while reducing pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the slewing support of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the filter screen of the utility model;

[0021] Figure 4 This is a schematic diagram of the heat conducting wire structure of the utility model.

[0022] In the figure: 1. support frame; 2. digestion reactor; 3. feed port; 4. first motor; 5. second motor; 6. power supply body; 7. circulation pipeline; 8. circulation pump; 9. feed port; 10. slewing support; 11. discharge port; 12. driving gear; 13. driven gear; 14. stirring blade; 15. first bevel gear; 16. second bevel gear; 17. filter screen; 18. heat conducting wire; 19. through hole; 20. movable groove; 21. rotating blade. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 , the utility model provides a technical solution:

[0025] A biological sludge digestion device includes a support frame 1, a digestion reactor 2 is fixedly connected to the top of the support frame 1, a feed port 3 is fixedly installed on the outer surface of the digestion reactor 2, a discharge port 11 is fixedly installed on the bottom of the digestion reactor 2, an upper stirring assembly is arranged inside the digestion reactor 2, and the upper stirring assembly includes a slewing support 10, a driving gear 12, a driven gear 13 and a stirring blade 14, a slewing support 10 is fixedly connected to the top of the digestion reactor 2, a driving gear 12 and two driven gears 13 are rotatably connected to the bottom inner wall of the slewing support 10, the two driven gears 13 are meshed with the driving gear 12 and meshed with the slewing support 10, and the two driven gears 13 are meshed with the driving gear 12 and the slewing support 10. The bottom of 13 is fixedly connected with stirring blades 14, and the two stirring blades 14 are located inside the digestion reactor 2 and at the bottom of the slewing support 10. The top of the slewing support 10 is fixedly installed with a first motor 4, and the output end of the first motor 4 passes through the slewing support 10 and is fixedly connected to the driving gear 12. The lower stirring component inside the digestion reactor 2, the first motor 4 is started, and its output end drives the driving gear 12 to rotate. Since the driving gear 12 is meshed with the two driven gears 13, the driven gear 13 also rotates around the slewing support 10, and the bottom of the driven gear 13 is fixedly connected with stirring blades 14, so the stirring blades 14 rotate and stir inside the digestion reactor 2.

[0026] Furthermore, a movable groove 20 is formed on the inner wall of the bottom of the slewing support 10, and the two stirring blades 14 are movably connected to the movable groove 20. The stirring blades 14 are movably connected to the movable groove 20, thereby ensuring that the stirring blades 14 can move smoothly during the rotation process.

[0027] Furthermore, a filter screen 17 is fixedly connected to the interior of the digestion reactor 2 , and the feed inlet 3 is located below the slewing support 10 , so that solid matter in the sludge will be intercepted by the filter screen 17 .

[0028] Further, the lower stirring assembly includes a second motor 5, a first bevel gear 15, a second bevel gear 16 and a rotating blade 21. The second motor 5 is fixedly installed on the outer surface of the digestion reactor 2, and the inner wall of the digestion reactor 2 is rotatably connected to the first bevel gear 15. The output end of the second motor 5 is fixedly connected to the first bevel gear 15. The outer surface of the filter 17 is rotatably connected to the rotating blade 21. The top of the rotating blade 21 is fixedly connected to the second bevel gear 16. The second bevel gear 16 is vertically meshed with the first bevel gear 15. When the second motor 5 is started, its output end drives the first bevel gear 15 to rotate. Since the first bevel gear 15 is vertically meshed with the second bevel gear 16, the second bevel gear 16 rotates accordingly, thereby driving the rotating blade 21 to rotate on the outer surface of the filter 17. The rotation of the rotating blade 21 stirs the lower layer of sludge, which helps the sludge to contact the digestion liquid or microorganisms more fully, thereby improving the digestion efficiency.

[0029] Furthermore, a power source 6 is fixedly installed on the outer surface of the digestion reactor 2, and a heat conductor 18 is wound inside the digestion reactor 2. The power source 6 is electrically connected to the heat conductor 18, and the power source 6 provides electrical energy to the heat conductor 18. The heat conductor 18 is wound inside the digestion reactor 2 to provide the required heat for the sludge, which helps to maintain the temperature conditions required for the digestion reaction.

[0030] Furthermore, a circulation pipe 7 is fixedly connected to the outer surface of the digestion reactor 2, and the circulation pipe 7 is in the shape of a "mouth". A circulation pump 8 is fixedly installed on the outer surface of the digestion reactor 2, and the circulation pipe 7 is fixedly connected to the circulation pump 8. A feeding port 9 is fixedly connected to the outer surface of the circulation pipe 7. The outer surface of the circulation pipe 7 located inside the digestion reactor 2 is provided with a plurality of equidistantly distributed through holes 19. After the circulation pump 8 is started, the digestive liquid or microbial mixed liquid in the digestion reactor 2 is circulated through the circulation pipe 7. The outer surface of the circulation pipe 7 located inside the digestion reactor 2 is provided with a plurality of equidistantly distributed through holes 19, so that the mixed liquid can be evenly sprayed into the sludge through these through holes 19. Through the action of the circulation pipe 7 and the circulation pump 8, the circulation stirring and mixing of the sludge is realized.

[0031] Working principle: When the staff needs to use the biological sludge digestion device, the biological sludge to be treated is put into the digestion reactor 2 through the feed port 3. Since the feed port 3 is located below the slewing support 10, the sludge will first fall into the lower layer of the digestion reactor 2. The first motor 4 is started, and its output end drives the driving gear 12 to rotate. Since the driving gear 12 is meshed with the two driven gears 13, the driven gear 13 also rotates around the slewing support 10. The bottom of the driven gear 13 is fixedly connected with a stirring blade 14, so the stirring blade 14 rotates and stirs inside the digestion reactor 2. The stirring blade 14 is movably connected to the movable groove 20, ensuring that the stirring blade 14 can move smoothly during the rotation process. The upper stirring allows the upper sludge to be evenly stirred and digested. At the same time, the second motor 5 is started, and its output end drives the first bevel gear 15 to rotate. Since the first bevel gear 15 is vertically meshed with the second bevel gear 16, the second bevel gear 16 rotates accordingly, thereby driving the rotating blades 21 to rotate on the outer surface of the filter screen 17. The rotation of the rotating blades 21 stirs the lower layer of sludge, which helps the sludge to contact the digestion liquid or microorganisms more fully, thereby improving the digestion efficiency. The power supply body 6 provides electrical energy to the heat conductor 18, and the heat conductor 18 is wound inside the digestion reactor 2 to provide the required heat for the sludge, which helps to maintain the temperature conditions required for the digestion reaction. After the circulation pump 8 is started, the digestion liquid or microbial mixture in the digestion reactor 2 is circulated through the circulation pipe 7. The circulation pipe 7 is located on the outer surface of the digestion reactor 2. A plurality of equally spaced through holes 19 are provided so that the mixed liquid can be uniformly sprayed into the sludge through the through holes 19. The circulation stirring and mixing of the sludge is realized through the circulation pipe 7 and the circulation pump 8, thereby further improving the digestion efficiency. If digestion liquid or other additives need to be added, the materials can be added into the circulation pipe 7 through the feeding port 9, and then the materials can be uniformly sprayed into the sludge through the circulation pump 8. During the stirring and digestion process, the solid matter in the sludge will be intercepted by the filter screen 17, while the digestion liquid and microorganisms can continue to participate in the digestion reaction through the filter screen 17. When the digestion is completed, the digested sludge can be discharged through the discharge port 11.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A biological sludge digestion device, comprising a support frame (1), a digestion reactor (2) is fixedly connected to the top of the support frame (1), a feed inlet (3) is fixedly installed on the outer surface of the digestion reactor (2), and a discharge port (11) is fixedly installed on the bottom of the digestion reactor (2), characterized in that: An upper stirring assembly is provided inside the digestion reactor (2), and the upper stirring assembly comprises a slewing support (10), a driving gear (12), a driven gear (13) and a stirring blade (14). The top of the digestion reactor (2) is fixedly connected to the slewing support (10), the bottom inner wall of the slewing support (10) is rotatably connected to the driving gear (12) and two driven gears (13), the two driven gears (13) are meshed with the driving gear (12) and the slewing support (10), the bottoms of the two driven gears (13) are fixedly connected to the stirring blade (14), the two stirring blades (14) are located inside the digestion reactor (2) and at the bottom of the slewing support (10), a first motor (4) is fixedly installed on the top of the slewing support (10), the output end of the first motor (4) passes through the slewing support (10) and is fixedly connected to the driving gear (12), and a lower stirring assembly is provided inside the digestion reactor (2).

2. A biological sludge digestion device according to claim 1, characterized in that: A movable groove (20) is provided on the inner wall of the bottom of the rotary support (10), and the two stirring blades (14) are movably connected to the movable groove (20).

3. A biological sludge digestion device according to claim 1, characterized in that: A filter screen (17) is fixedly connected to the interior of the digestion reactor (2), and the feed inlet (3) is located below the slewing support (10).

4. A biological sludge digestion device according to claim 3, characterized in that: The lower stirring assembly comprises a second motor (5), a first bevel gear (15), a second bevel gear (16) and a rotating blade (21); the second motor (5) is fixedly mounted on the outer surface of the digestion reactor (2); the inner wall of the digestion reactor (2) is rotatably connected to the first bevel gear (15); the output end of the second motor (5) is fixedly connected to the first bevel gear (15); the outer surface of the filter screen (17) is rotatably connected to the rotating blade (21); the top of the rotating blade (21) is fixedly connected to the second bevel gear (16); and the second bevel gear (16) is vertically meshed with the first bevel gear (15).

5. A biological sludge digestion device according to claim 1, characterized in that: A power source (6) is fixedly mounted on the outer surface of the digestion reactor (2), a heat conducting wire (18) is wound inside the digestion reactor (2), and the power source (6) is electrically connected to the heat conducting wire (18).

6. A biological sludge digestion device according to claim 1, characterized in that: A circulation pipe (7) is fixedly connected to the outer surface of the digestion reactor (2), and the circulation pipe (7) is in the shape of a "mouth". A circulation pump (8) is fixedly installed on the outer surface of the digestion reactor (2), and the circulation pipe (7) is fixedly connected to the circulation pump (8). A feeding port (9) is fixedly connected to the outer surface of the circulation pipe (7), and a plurality of equally spaced through holes (19) are provided on the outer surface of the circulation pipe (7) located inside the digestion reactor (2).

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