CN113772909A - Sludge anaerobic digestion device and method - Google Patents
Sludge anaerobic digestion device and method Download PDFInfo
- Publication number
- CN113772909A CN113772909A CN202111146398.6A CN202111146398A CN113772909A CN 113772909 A CN113772909 A CN 113772909A CN 202111146398 A CN202111146398 A CN 202111146398A CN 113772909 A CN113772909 A CN 113772909A
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- box body
- stirring
- worm
- stirring paddle
- rack
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- 239000010802 sludge Substances 0.000 title claims abstract description 33
- 230000029087 digestion Effects 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 100
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000010815 organic waste Substances 0.000 description 3
- 230000000739 chaotic effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Molecular Biology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge anaerobic digestion device and a method, wherein the device comprises a box body, a support frame, a first stirring paddle, a second stirring paddle and a positive and negative rotation alternate rotation transmission mechanism; a feed inlet is arranged on one side of the box body, and a discharge outlet is arranged on the other side of the box body; the first stirring paddle and the second stirring paddle are arranged in the box body; a support frame is arranged above the box body; the positive and negative rotation alternate rotation transmission mechanism consists of a motor, a cam, a sliding plate, a rack, a gear, a first worm wheel, a second worm wheel and a worm. The invention ensures that anaerobic digestion reaction is carried out in a closed space, and simultaneously drives 2 stirring paddles to rotate alternately in the forward direction and the reverse direction and relatively rotate through one motor, thereby effectively improving the mixing reaction efficiency of organic sludge and anaerobic bacteria.
Description
Technical Field
The invention relates to the technical field of organic solid waste treatment, in particular to a sludge anaerobic digestion device and a sludge anaerobic digestion method.
Background
Along with the rapid development of social economy in China, the urbanization process is accelerated, the living standard of people is rapidly improved, and the quantity of garbage generated in the urban production and living process is increased. The domestic garbage occupies land, and the condition of environmental pollution and the influence on the health of people are more obvious. The increasing of the amount of municipal domestic waste makes the waste treatment more and more difficult, and the problems of environmental pollution and the like caused by the increase gradually draw attention from all social circles.
At present, anaerobic digestion treatment technology is greatly developed and applied in municipal waste treatment, the technology has high degree of harmlessness, and anaerobic digestion can be artificially controlled to accelerate the stabilization of organic waste and realize harmless treatment of the organic waste; meanwhile, biogas can be generated through anaerobic decomposition, renewable energy sources can be obtained, and resource utilization of organic waste is realized; in addition, it also has a high organic load bearing capacity.
The existing anaerobic digestion treatment device is generally provided with a stirring device, but the stirring mode adopted by the device is single, so that the organic sludge in the device cannot be fully contacted and mixed with anaerobic bacteria, and the reaction efficiency and the stirring mixing efficiency are low.
Disclosure of Invention
The invention provides a sludge anaerobic digestion device and a sludge anaerobic digestion method, which can ensure that anaerobic digestion reaction is carried out in a closed space, and simultaneously, 2 stirring paddles are driven by a motor to rotate in a positive and negative direction alternately and relatively, so that the mixing reaction efficiency of organic sludge and anaerobic bacteria is effectively improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a sludge anaerobic digestion device comprises a box body, a supporting frame, a first stirring paddle, a second stirring paddle and a positive and negative rotation alternate rotation transmission mechanism; a feed inlet is formed in one side of the box body, and a discharge outlet is formed in the other side of the box body; the first stirring paddle and the second stirring paddle are arranged in the box body; a support frame is arranged above the box body; the positive and negative rotation alternate rotation transmission mechanism consists of a motor, a cam, a sliding plate, a rack, a gear, a first worm wheel, a second worm wheel and a worm; the motor is arranged at the top of the support frame, an output shaft of the motor is connected with the cam through a rotating shaft, and the cam, the sliding plate, the rack and the gear are all arranged on the inner side of the support frame; the two sides of the cam are respectively provided with a sliding plate, 2 sliding plates are simultaneously connected with the rack, and when the motor drives the cam to rotate through the rotating shaft, the sliding plates drive the rack to horizontally reciprocate; the rack is in meshing transmission with the gear, the gear is coaxially connected with the worm, and the worm penetrates through the top wall of the box body and then extends downwards to the bottom of the box body; the first stirring paddle is in transmission connection with the worm through a first worm wheel, the second stirring paddle is in transmission connection with the worm through a second worm wheel, and the first stirring paddle and the second stirring paddle rotate relatively.
2U-shaped frames are respectively arranged on two sides of the cam in the supporting frame, and the top ends of the U-shaped frames are fixedly connected with the top of the supporting frame; the 2 sliding plates are respectively connected with the U-shaped frames on the corresponding sides in a sliding manner; the rack is arranged at the bottom of the sliding plate and horizontally arranged, the back surface of the rack is connected with the guide rod in a sliding mode, and two ends of the guide rod are fixedly connected with the corresponding sides of the supporting frame respectively.
The feed inlet is arranged at the upper part of the box body, the discharge outlet is arranged close to the bottom of the box body, and the discharge outlet is provided with a discharge valve.
The gear and the rotating shaft are coaxially arranged, the rotating shaft penetrates through the gear and then extends downwards, and the top of the worm is provided with a jack which is inserted into the rotating shaft; the bottom of the worm is rotationally connected with the bottom wall of the box body through a bearing; the worm is provided with a first meshing section at the position for transmission with the first worm wheel, and is provided with a second meshing section at the position for transmission with the second worm wheel, and the spiral directions of the first meshing section and the second meshing section are opposite.
The first stirring paddle and the second stirring paddle are both composed of a stirring shaft and stirring blades; the stirring shaft is horizontally arranged, and two ends of the stirring shaft are respectively and rotatably connected with corresponding side walls of the box body through bearings; a plurality of stirring blades are axially arranged on the stirring shaft, and the stirring blades on the first stirring shaft and the stirring blades on the second stirring shaft are arranged in a staggered manner.
A method for anaerobic digestion of sludge comprises the following processes: injecting sludge into the box body from the feed inlet to perform anaerobic digestion reaction, starting a motor, driving a cam to rotate by a rotating shaft, and pushing sliding plates on two sides by the cam in turn to enable a rack to horizontally reciprocate; the gear drives the first stirring paddle and the second stirring paddle to rotate relatively through the worm; through alternately stirring in forward and reverse directions, the organic sludge in the box body is fully contacted with anaerobic bacteria, and the reaction efficiency is improved.
Compared with the prior art, the invention has the beneficial effects that:
1) the positive and negative rotation alternate rotation of the first stirring paddle and the second stirring paddle is realized through the cam, the worm gear transmission and the gear rack transmission, the mixing degree of organic sludge and anaerobic bacteria in the box body is increased while the box body is ensured to be a closed space required by anaerobic digestion reaction, so that the organic sludge and the anaerobic bacteria can be fully contacted and uniformly mixed in a positive and negative alternate stirring mode, and further, the reaction efficiency is improved;
2) through set up 2 sections on the worm and revolve to opposite meshing section, realize the relative rotation of first stirring rake and second stirring rake through 2 worm wheels with it meshing when making the worm rotate, a plurality of stirring vane staggered arrangement on 2 stirring rakes has further improved the mixing efficiency of organic sludge and anaerobic bacteria.
Drawings
FIG. 1 is a schematic view showing the construction of an anaerobic sludge digestion apparatus according to the present invention.
In the figure: 1. the device comprises a box body 2, a support frame 3, a motor 4, a rotating shaft 5, a cam 6, a sliding plate 7, a rack 8, a gear 9, a worm 10, a first worm wheel 11, a second worm wheel 12, a first stirring paddle 13, a second stirring paddle 14, stirring blades 15, a U-shaped frame 16, a guide rod 17, a feeding hole 18 and a discharging hole
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figure 1, the sludge anaerobic digestion device comprises a box body 1, a support frame 2, a first stirring paddle 12, a second stirring paddle 13 and a positive and negative rotation alternate rotation transmission mechanism; a feed inlet 17 is formed in one side of the box body 1, and a discharge outlet 18 is formed in the other side of the box body; the first stirring paddle 12 and the second stirring paddle 13 are arranged in the box body 1; a support frame 2 is arranged above the box body 1; the positive and negative rotation alternate rotation transmission mechanism consists of a motor 3, a cam 5, a sliding plate 6, a rack 7, a gear 8, a first worm wheel 10, a second worm wheel 11 and a worm 9; the motor 3 is arranged at the top of the support frame 2, an output shaft of the motor 3 is connected with the cam 5 through the rotating shaft 4, and the cam 5, the sliding plate 6, the rack 7 and the gear 8 are all arranged on the inner side of the support frame 2; sliding plates 6 are respectively arranged on two sides of the cam 5, 2 sliding plates 6 are simultaneously connected with the rack 7, and when the motor 3 drives the cam 5 to rotate through the rotating shaft 4, the sliding plates 6 drive the rack 7 to horizontally reciprocate; the rack 7 is in meshing transmission with the gear 8, the gear 8 is coaxially connected with the worm 9, and the worm 9 extends downwards to the bottom of the box body 1 after penetrating through the top wall of the box body 1; the first stirring paddle 12 is in transmission connection with the worm 9 through a first worm wheel 10, the second stirring paddle 13 is in transmission connection with the worm 9 through a second worm wheel 11, and the first stirring paddle 12 and the second stirring paddle 13 rotate relatively.
2U-shaped frames 15 are respectively arranged on two sides of the cam 5 in the supporting frame 2, and the top ends of the U-shaped frames 15 are fixedly connected with the top of the supporting frame 2; the 2 sliding plates 6 are respectively connected with the U-shaped frames 15 on the corresponding sides in a sliding manner; the rack 7 is arranged at the bottom of the sliding plate 6, the rack 7 is horizontally arranged, the back of the rack 7 is in sliding connection with the guide rod 16, and two ends of the guide rod 16 are fixedly connected with corresponding sides of the support frame 2 respectively.
The feed inlet 17 is arranged at the upper part of the box body 1, the discharge outlet 18 is arranged close to the bottom of the box body 1, and a discharge valve is arranged at the discharge outlet 18.
The gear 8 and the rotating shaft 4 are coaxially arranged, the rotating shaft 4 penetrates through the gear 8 and then extends downwards, and the top of the worm 9 is provided with a jack which is inserted into the rotating shaft 4; the bottom of the worm 9 is rotationally connected with the bottom wall of the box body 1 through a bearing; the worm 9 is provided with a first meshing section at the position for transmitting with the first worm wheel 10, and is provided with a second meshing section at the position for transmitting with the second worm wheel 11, and the spiral directions of the first meshing section and the second meshing section are opposite.
The first stirring paddle 12 and the second stirring paddle 13 are both composed of a stirring shaft and stirring blades 14; the stirring shaft is horizontally arranged, and two ends of the stirring shaft are respectively and rotatably connected with corresponding side walls of the box body 1 through bearings; a plurality of stirring blades 14 are axially arranged on the stirring shaft, and the stirring blades on the first stirring shaft 12 and the stirring blades on the second stirring shaft 13 are arranged in a staggered manner.
A method for anaerobic digestion of sludge comprises the following processes: injecting sludge into the box body 1 from the feed inlet 17 for anaerobic digestion reaction, starting the motor 3, driving the cam 5 to rotate by the rotating shaft 4, and driving the sliding plates 6 at two sides to horizontally reciprocate the rack 7 by the cam 5 in turn; the gear 8 rotates forwards and reversely through the meshing transmission of the rack 7 and the gear 8, and the gear 8 drives the first stirring paddle 12 and the second stirring paddle 13 to rotate relatively through the worm 9; through alternately stirring in the forward direction and the reverse direction, the organic sludge in the box body 1 is fully contacted with anaerobic bacteria, and the reaction efficiency is improved.
The invention relates to a sludge anaerobic digestion device, wherein a main reaction container is a box body 1, a feed inlet 17 and a discharge outlet 18 are respectively arranged on two sides of the box body 1, a worm 9 penetrates through the middle part of the box body 1, and a bearing is arranged at the joint of the bottom end of the worm 9 and the box body 1 and can ensure that the worm 2 is more stable during rotation.
2 stirring paddles, namely a first stirring paddle 12 and a second stirring paddle 13, are arranged in the box body 1; a plurality of stirring blades 14 are fixedly connected to the stirring shafts of the 2 stirring paddles, and the middle parts of the 2 stirring shafts are fixedly connected with a first worm gear 10 and a second worm gear 11 respectively. The worm 2 is last to be opposite with the spiral direction of 2 worm wheel corresponding driven positions promptly meshing section one, meshing section two, when worm 9 rotated, can rotate to opposite direction in step with 2 meshing section meshing driven worm wheel one 10, two 11 to make first stirring rake 12, the relative rotation of second stirring rake 13, increased the chaotic degree of material stirring in-process in the box 1, improved the mixing efficiency of organic sludge and anaerobic bacteria.
The upper end of the worm 9 is fixedly connected with a gear 8, the top of the box body 1 is fixedly connected with a support frame 2, two sides of the top in the support frame 2 are respectively fixed with 2U-shaped frames 15, the 2U-shaped frames 15 are connected with sliding plates 6 in a sliding manner, the lower ends of the 2 sliding plates 6 are simultaneously and fixedly connected with the same rack 7, and the rack 7 is in meshing transmission with the gear 8; a guide rod 16 is inserted into the back of the rack 7, two ends of the guide rod 16 are fixedly connected with two sides of the support frame 2, and the guide rod 16 can enable the rack 7 to move more stably when moving horizontally; in addition, 2 sliding plates 6 connected with the rack 7 respectively slide along the U-shaped frame 15, so that the rack 7 can not turn over, and the rack 7 is stably meshed with the gear 8.
The top of the support frame 2 is fixed with a motor 3 (preferably a Y80M1-2 type motor), an output shaft of the motor 3 is connected with a rotating shaft 4 penetrating through the support frame 2, one end of the rotating shaft 4 far away from the motor 3 penetrates through the gear 8 and then is inserted into the upper end of the worm 9, and under the condition that the rotation of the rotating shaft 4 and the rotation of the worm 9 are not influenced mutually, the rotation of the rotating shaft 4 and the rotation of the worm 9 are enabled to be more stable.
The rotating shaft 4 is provided with a cam 5 at one section positioned on the inner side of the support frame 2, the rotating shaft 4 drives the cam 5 to rotate after the motor 3 is started, when one end with a longer radius of the cam 5 is contacted with the sliding plate on the left side, the sliding plate on the left side is pushed to move leftwards and drive the rack 7 to move leftwards, and when one end with a longer radius of the cam is separated from the sliding plate on the left side and then is contacted with the sliding plate on the right side, the sliding plate on the right side is pushed to move rightwards and drive the rack 7 to move rightwards; through the continuous rotation of cam 5, realize the horizontal reciprocating motion of rack 7, further drive and rack 7 meshing's 8 reciprocating rotation of gear, drive 2 stirring paddles forward and reverse reciprocating rotation through worm 9 reciprocating rotation at last to greatly increased the chaotic degree when organic sludge stirs with the anaerobism bacterium in the box 1, made both abundant contacts, evenly stirred, improved mixed reaction efficiency.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A sludge anaerobic digestion device is characterized by comprising a box body, a supporting frame, a first stirring paddle, a second stirring paddle and a positive and negative rotation alternate rotation transmission mechanism; a feed inlet is formed in one side of the box body, and a discharge outlet is formed in the other side of the box body; the first stirring paddle and the second stirring paddle are arranged in the box body; a support frame is arranged above the box body; the positive and negative rotation alternate rotation transmission mechanism consists of a motor, a cam, a sliding plate, a rack, a gear, a first worm wheel, a second worm wheel and a worm; the motor is arranged at the top of the support frame, an output shaft of the motor is connected with the cam through a rotating shaft, and the cam, the sliding plate, the rack and the gear are all arranged on the inner side of the support frame; the two sides of the cam are respectively provided with a sliding plate, 2 sliding plates are simultaneously connected with the rack, and when the motor drives the cam to rotate through the rotating shaft, the sliding plates drive the rack to horizontally reciprocate; the rack is in meshing transmission with the gear, the gear is coaxially connected with the worm, and the worm penetrates through the top wall of the box body and then extends downwards to the bottom of the box body; the first stirring paddle is in transmission connection with the worm through a first worm wheel, the second stirring paddle is in transmission connection with the worm through a second worm wheel, and the first stirring paddle and the second stirring paddle rotate relatively.
2. The anaerobic sludge digestion device as claimed in claim 1, wherein 2U-shaped frames are respectively arranged at two sides of the cam inside the support frame, and the top ends of the U-shaped frames are fixedly connected with the top of the support frame; the 2 sliding plates are respectively connected with the U-shaped frames on the corresponding sides in a sliding manner; the rack is arranged at the bottom of the sliding plate and horizontally arranged, the back surface of the rack is connected with the guide rod in a sliding mode, and two ends of the guide rod are fixedly connected with the corresponding sides of the supporting frame respectively.
3. The anaerobic sludge digestion device as claimed in claim 1, wherein the inlet is disposed at the upper part of the tank, the outlet is disposed near the bottom of the tank, and the outlet is disposed with a valve.
4. The anaerobic sludge digestion device as claimed in claim 1, wherein the gear is coaxial with the rotating shaft, the rotating shaft penetrates through the gear and then extends downwards, and the top of the worm is provided with a jack which is inserted with the rotating shaft; the bottom of the worm is rotationally connected with the bottom wall of the box body through a bearing; the worm is provided with a first meshing section at the position for transmission with the first worm wheel, and is provided with a second meshing section at the position for transmission with the second worm wheel, and the spiral directions of the first meshing section and the second meshing section are opposite.
5. The anaerobic sludge digestion device as claimed in claim 1, wherein the first stirring paddle and the second stirring paddle are both composed of a stirring shaft and stirring blades; the stirring shaft is horizontally arranged, and two ends of the stirring shaft are respectively and rotatably connected with corresponding side walls of the box body through bearings; a plurality of stirring blades are axially arranged on the stirring shaft, and the stirring blades on the first stirring shaft and the stirring blades on the second stirring shaft are arranged in a staggered manner.
6. The anaerobic sludge digestion method based on the device of any one of claims 1 to 5 is characterized by comprising the following processes: injecting sludge into the box body from the feed inlet to perform anaerobic digestion reaction, starting a motor, driving a cam to rotate by a rotating shaft, and pushing sliding plates on two sides by the cam in turn to enable a rack to horizontally reciprocate; the gear drives the first stirring paddle and the second stirring paddle to rotate relatively through the worm; through alternately stirring in forward and reverse directions, the organic sludge in the box body is fully contacted with anaerobic bacteria, and the reaction efficiency is improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146398.6A CN113772909A (en) | 2021-09-28 | 2021-09-28 | Sludge anaerobic digestion device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111146398.6A CN113772909A (en) | 2021-09-28 | 2021-09-28 | Sludge anaerobic digestion device and method |
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| Publication Number | Publication Date |
|---|---|
| CN113772909A true CN113772909A (en) | 2021-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111146398.6A Pending CN113772909A (en) | 2021-09-28 | 2021-09-28 | Sludge anaerobic digestion device and method |
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| CN (1) | CN113772909A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114888964A (en) * | 2022-05-19 | 2022-08-12 | 江西工业贸易职业技术学院 | Concrete mixer for concrete construction system material permeates water |
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2021
- 2021-09-28 CN CN202111146398.6A patent/CN113772909A/en active Pending
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| JP2004315260A (en) * | 2003-04-14 | 2004-11-11 | Atex Co Ltd | Stirring and discharging device for compost or the like |
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|---|---|---|---|---|
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