CN110563305B - Disc dryer and drainage structures thereof - Google Patents
Disc dryer and drainage structures thereof Download PDFInfo
- Publication number
- CN110563305B CN110563305B CN201910876775.8A CN201910876775A CN110563305B CN 110563305 B CN110563305 B CN 110563305B CN 201910876775 A CN201910876775 A CN 201910876775A CN 110563305 B CN110563305 B CN 110563305B
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- hollow shaft
- water
- collecting cavity
- water collecting
- scooping
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 107
- 238000003466 welding Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 21
- 238000001035 drying Methods 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a disc dryer and a drainage structure thereof, belonging to the field of environmental protection, wherein a hollow shaft is arranged in the disc dryer along the axial direction of the disc dryer, and the disc dryer is characterized in that the drainage structure is connected at the tail end of the hollow shaft and comprises a water collecting cavity, a scooping water tank and a spiral coil. The water collecting cavity is of a hollow structure and is communicated with the tail end of the hollow shaft, and a conveying pipe is communicated with one side, far away from the hollow shaft, of the water collecting cavity. The water scooping groove is connected to one side, close to the hollow shaft, of the water collecting cavity, is of a hollow structure and is open on one side. One end of the spiral coil pipe is communicated with the water scooping groove, and the other end of the spiral coil pipe is communicated with the water collecting cavity, so that water in the water scooping groove is conveyed to the water collecting cavity. The drainage result of the disc dryer can obviously increase the phase change heat exchange area of the dryer, improve the heat exchange efficiency and the safety, prolong the service life of equipment, reduce the overall energy consumption of the equipment and reduce the energy waste.
Description
Technical Field
The invention relates to the field of environmental protection, in particular to a disc dryer and a drainage structure thereof.
Background
Domestic sludge annual output in China is higher than 3500 ten thousand tons, and a large amount of sludge can be produced in industries such as printing and dyeing, papermaking, petrochemical industry, leather making and the like, wherein the annual output of the printing and dyeing sludge is 2150 ten thousand tons. By 2015, the annual capacity of the sludge harmless treatment facility in China is 1369 ten thousand tons, which is far smaller than the domestic sludge yield in China. Therefore, the current state of sludge treatment in China can not meet the requirements of stabilization, reduction, harmlessness and recycling.
At present, common sludge treatment methods include sanitary landfill, land utilization, heat drying and incineration, and building material utilization. The prior experience proves that the sludge treatment method is the most thorough after the sludge is dried and incinerated, the secondary pollution problem can be reduced while the heat of the organic matters of the sludge is fully utilized, in addition, viruses and bacteria can be killed at high temperature, and the sludge recycling rate is high.
In a sludge thermal drying system, a disc dryer is a relatively common system. The disc dryer on the market at present often causes such problems during operation: the high-temperature steam and wet sludge indirectly contact with each other to generate condensed water after phase change heat exchange, and the condensed water is accumulated in a hollow shaft and a disc of the dryer and cannot be discharged in time, so that the phase change heat exchange area of the dryer is greatly reduced, the heat exchange efficiency is reduced, and the service life and the safety of equipment are also reduced. In addition, the overall power consumption of the equipment is increased, and the energy waste is caused.
Disclosure of Invention
The invention aims to provide a disc dryer and a drainage structure thereof, which are used for solving the problems that condensed water generated in the running process of the disc dryer in the market at present is accumulated in a hollow shaft and a disc of the dryer and cannot be discharged in time, so that the phase change heat exchange area of the dryer is greatly reduced, the heat exchange efficiency is reduced, and the service life and the safety of equipment are also reduced; the total energy consumption of the equipment is increased, and the technical problem of energy waste is caused.
In order to solve the technical problem, the present invention provides a drainage structure of a disc dryer, wherein a hollow shaft is arranged in the disc dryer along an axial direction of the disc dryer, the drainage structure is connected to a tail end of the hollow shaft, and the drainage structure comprises:
The water collecting cavity is of a hollow structure and is communicated with the tail end of the hollow shaft, and a conveying pipe is communicated with one side, far away from the hollow shaft, of the water collecting cavity;
A scooping water tank connected to one side of the water collecting cavity near the hollow shaft, wherein the scooping water tank is of a hollow structure and one side of the scooping water tank is open;
one end of the spiral coil pipe is communicated with the water scooping groove, and the other end of the spiral coil pipe is communicated with the water collecting cavity, so that water in the water scooping groove is conveyed to the water collecting cavity.
Preferably, the water collecting cavity is of a hollow cylinder structure, the water scooping groove is a cylinder with a fan-shaped ring in section, and the water scooping groove is arranged along the circumferential direction of the water collecting cavity.
Preferably, a plurality of water collecting cavity ventilation holes are formed in the side wall of the water collecting cavity.
Preferably, the number of the scooping grooves is multiple, the scooping grooves are arranged at intervals along the circumferential direction of the water collecting cavity, and a spiral coil is communicated between each scooping groove and the water collecting cavity.
Preferably, the side wall of the water scooping groove is provided with a water scooping groove vent hole.
In addition, the invention also provides a disc dryer, which comprises:
the machine body comprises a dome and a shell, wherein an air outlet is formed in the middle of the upper side of the dome, a steam inlet and a feed inlet are respectively formed in two ends of the upper side of the dome, and a discharge outlet is formed in the lower side of the shell;
The inner cylinder body comprises a hollow shaft and discs, the hollow shaft is arranged in the shell along the axial through length of the shell and can rotate around the central axis of the hollow shaft, the front end of the hollow shaft is a steam inlet, and the discs are sleeved outside the hollow shaft and are arranged at intervals along the axial direction of the hollow shaft;
the drainage structure is connected to the tail end of the hollow shaft as described above;
The supporting seat is arranged at the bottom of the shell.
Preferably, the disc is of a hollow structure and is formed by butt welding two circular arc-shaped plates.
Preferably, the side wall of the disc is provided with a disc air outlet hole.
Preferably, the front end of the shell is arranged obliquely upwards and forms an included angle of 1-2 degrees with the horizontal direction.
Preferably, the housing is a jacketed structure.
Compared with the prior art, the invention has the characteristics and beneficial effects that:
(1) The invention designs a drainage structure of a disc dryer aiming at the problem that condensed water cannot be timely discharged by the disc dryer, the structure is connected to the tail end of a hollow shaft and comprises a water collecting cavity, a water scooping groove and a spiral coil, the condensed water generated in the hollow shaft sequentially flows into the water scooping groove, the spiral coil and the water collecting cavity and is finally discharged from a conveying pipe, the phase-change heat exchange area of the dryer can be remarkably increased, the heat exchange efficiency and the safety are improved, the service life of equipment is prolonged, the total energy consumption of the equipment is reduced, and the energy waste is reduced.
(2) The water draining structure of the disc dryer can select water scooping grooves with different sizes, spiral coils with different pitches and inner diameters and water collecting cavities according to the water production conditions in the hollow shaft under different working conditions, so that condensed water generated by high-temperature steam phase transformation in the hollow shaft can be timely generated, the deformation of the device caused by uneven heating can be reduced, and the heat exchange efficiency of the dryer can be remarkably improved.
(3) The invention provides a disc dryer with a drainage structure, which is characterized in that after high-temperature steam and sludge are in indirect contact and phase change heat exchange, condensed water flows into the drainage structure and is discharged from a conveying pipe, so that the dryer is prevented from being deformed due to uneven deformation, and the service life of the dryer is prevented from being shortened.
Drawings
Fig. 1 is a schematic view of a disc dryer.
FIG. 2 is a schematic illustration of the connection of the water collection chamber to the scooping trough.
FIG. 3 is a schematic illustration of the connection of the water collection chamber to a single scooping trough.
Fig. 4 is a schematic structural view of the scooping trough.
Fig. 5 is a schematic view of the structure of the water collecting chamber.
FIG. 6 is a schematic diagram of the connection of a hollow shaft to a disk.
The drawings are marked: 1-hollow shaft, 2-water collecting cavity, 3-water scooping groove, 4-spiral coil pipe, 5-conveying pipe, 6-water collecting cavity air vent, 7-water scooping groove air vent, 8-dome, 10-shell, 11-air outlet, 12-steam inlet, 13-feed inlet, 14-discharge outlet, 15-disc, 16-inspection port, 17-disc air vent and 18-supporting seat.
Detailed Description
The present invention will be further described below in order to make the technical means, innovative features, achieved objects and effects achieved by the present invention easy to understand.
The examples described herein are specific embodiments of the present application, which are intended to illustrate the inventive concept, are intended to be illustrative and exemplary, and should not be construed as limiting the application to the embodiments and scope of the application. In addition to the embodiments described herein, those skilled in the art can adopt other obvious solutions based on the disclosure of the claims and specification, including those adopting any obvious substitutions and modifications to the embodiments described herein.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
A disc dryer is shown in fig. 1 and includes a body, an inner drum, a drain structure and a support base 18. The machine body comprises a dome 8 and a shell 10, wherein an air outlet 11 is formed in the middle of the upper side of the dome 8 and used for discharging waste gas generated by evaporation in the sludge drying process, so that the inside of the dryer is kept in a negative pressure state, and the sludge odor is prevented from leaking. The steam inlet 12 and the feed inlet 13 are respectively arranged at the two ends of the upper side of the dome 8, and the steam inlet 12 is an inlet for high-temperature steam. The feed inlet 13 is for sludge feed. A discharge port 14 is opened at the lower side of the housing 10 for discharging the dried sludge after drying. The upper side of the dome 8 is also provided with an inspection opening 16, which is convenient for inspection in case of failure of the dryer. The shell 10 is of a jacket structure, and high-temperature steam is introduced into the shell 10 and used for heating the cylinder of the dryer and preserving heat. The front end of the shell 10 is arranged obliquely upwards and forms an included angle of 1-2 degrees with the horizontal direction, so that the condensed water can automatically flow to the tail end of the hollow shaft 1.
The inner cylinder body comprises a hollow shaft 1 and a disc 15, the specific structure is shown in fig. 6, the hollow shaft 1 is arranged in the shell 10 along the axial direction of the shell 10 and can rotate around the central axis of the hollow shaft 1, the front end of the hollow shaft 1 is a steam inlet, and high-temperature steam enters the machine body from the steam inlet 12 and enters from the front end of the hollow shaft 1. The discs 15 are sleeved outside the hollow shaft 1 and are arranged at intervals along the axial direction of the hollow shaft 1. The disk 15 has a hollow structure and is formed by butt welding two circular arc-shaped plates. The cavity of the disk 15 is divided into a plurality of sector areas by welded circular arc plates. The side wall of the disk 15 is provided with a disk air outlet hole 17, so that air in the disk 15 can be effectively discharged.
The drainage structure is connected to the end of the hollow shaft 1. The support base 18 is provided at the bottom of the housing 10.
As shown in fig. 2 to 5, the drain structure of the disc dryer includes a water collecting chamber 2, a scooping groove 3, and a spiral coil 4.
The water collecting cavity 2 is of a hollow structure and is communicated with the tail end of the hollow shaft 1. One side of the water collecting cavity 2 far away from the hollow shaft 1 is communicated with a conveying pipe 5. The side wall of the water collecting cavity 2 is provided with a plurality of water collecting cavity air holes 6, so that the air in the water collecting cavity 2 can be conveniently discharged in time.
The water scooping groove 3 is connected to one side of the water collecting cavity 2, which is close to the hollow shaft 1, and the water scooping groove 3 is of a hollow structure and one side of the water scooping groove is open. The side wall of the scooping water tank 3 is provided with the scooping water tank vent holes 7, so that accumulated water in the scooping water tank 3 can be discharged in time.
One end of the spiral coil 4 is communicated with the water scooping groove 3, and the other end of the spiral coil is communicated with the water collecting cavity 2, so that water in the water scooping groove 3 is conveyed to the water collecting cavity 2.
The water collecting cavity 2 is preferably a hollow cylinder structure, the water scooping groove 3 is a cylinder with a fan ring in section, and the water scooping groove 3 is arranged along the circumferential direction of the water collecting cavity 2. The number of the scooping water tanks 3 is multiple, the scooping water tanks 3 are arranged at intervals along the circumferential direction of the water collecting cavity 2, and a spiral coil 4 is communicated between each scooping water tank 3 and the water collecting cavity 2.
Sludge enters the body from the inlet 13. The high-temperature steam enters the machine body from the steam inlet 12 and then enters the front end of the hollow shaft 1, the high-temperature steam in the hollow shaft 1 exchanges heat with sludge outside the hollow shaft 1, and condensed water is generated on the inner wall of the hollow shaft 1. During the rotation of the hollow shaft 1 along the central axis thereof, the water scooping groove 3 scoops water, and condensed water flows into the water collecting cavity 2 from the water scooping groove 3 along the spiral coil 4 and finally is discharged from the conveying pipe 5. The dried sludge is discharged from the discharge port 14 to the body, and the waste gas generated in the drying process is discharged from the air outlet 11.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (6)
1. A drainage structure of a disc dryer, a hollow shaft (1) is arranged in the disc dryer along the axial through length of the disc dryer, and the drainage structure is characterized in that the drainage structure is connected at the tail end of the hollow shaft (1), and the drainage structure comprises:
the water collecting cavity (2) is of a hollow structure and is communicated with the tail end of the hollow shaft (1), and a conveying pipe (5) is communicated with one side, far away from the hollow shaft (1), of the water collecting cavity (2);
a scooping water tank (3) connected to one side of the water collecting cavity (2) close to the hollow shaft (1), wherein the scooping water tank (3) is of a hollow structure and one side of the scooping water tank is open;
A spiral coil (4) with one end communicated with the scooping trough (3) and the other end communicated with the water collecting cavity (2), so as to convey the water in the scooping trough (3) to the water collecting cavity (2);
the water scooping groove (3) is a cylinder with a fan-shaped ring in section, and the water scooping groove (3) is arranged along the circumferential direction of the water collecting cavity (2);
The number of the scooping grooves (3) is multiple, and a spiral coil pipe (4) is communicated between each scooping groove (3) and the water collecting cavity (2);
The side wall of the water scooping groove (3) is provided with a water scooping groove vent hole (7);
The water collecting cavity (2) is of a hollow cylinder structure;
A plurality of water collecting cavity air holes (6) are formed in the side wall of the water collecting cavity (2).
2. A disc dryer, comprising:
The machine body comprises a dome (8) and a shell (10), wherein an air outlet (11) is formed in the middle of the upper side of the dome (8), a steam inlet (12) and a feed inlet (13) are respectively formed in two ends of the upper side of the dome (8), and a discharge outlet (14) is formed in the lower side of the shell (10);
The inner cylinder comprises a hollow shaft (1) and discs (15), wherein the hollow shaft (1) is axially and fully arranged in the shell (10) along the shell (10) and can rotate around the central axis of the hollow shaft (1), the front end of the hollow shaft (1) is a steam inlet, and the discs (15) are sleeved outside the hollow shaft (1) and are axially and alternately arranged along the hollow shaft (1);
Drainage structure, as claimed in claim 1, connected to the end of the hollow shaft (1);
and the supporting seat (18) is arranged at the bottom of the shell (10).
3. A disc dryer according to claim 2, characterized in that: the disc (15) is of a hollow structure and is formed by butt welding two circular arc-shaped plates.
4. A disc dryer according to claim 3, characterized in that: the side wall of the disc (15) is provided with a disc air outlet hole (17).
5. A disc dryer according to claim 2, characterized in that: the front end of the shell (10) is arranged obliquely upwards and forms an included angle of 1-2 degrees with the horizontal direction.
6. A disc dryer according to claim 2, characterized in that: the shell (10) is of a jacket structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876775.8A CN110563305B (en) | 2019-09-17 | 2019-09-17 | Disc dryer and drainage structures thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910876775.8A CN110563305B (en) | 2019-09-17 | 2019-09-17 | Disc dryer and drainage structures thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110563305A CN110563305A (en) | 2019-12-13 |
| CN110563305B true CN110563305B (en) | 2024-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910876775.8A Active CN110563305B (en) | 2019-09-17 | 2019-09-17 | Disc dryer and drainage structures thereof |
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| Country | Link |
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| CN (1) | CN110563305B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115572036A (en) * | 2022-09-01 | 2023-01-06 | 杰瑞环保科技有限公司 | Discharge structure for disc dryer and disc dryer comprising same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209166051U (en) * | 2018-11-13 | 2019-07-26 | 山东凯斯达机械制造有限公司 | A kind of horizontal disc drying machine |
| CN210855773U (en) * | 2019-09-17 | 2020-06-26 | 北京国电龙源环保工程有限公司 | Disc dryer and drainage structure thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150007751A (en) * | 2013-07-12 | 2015-01-21 | 주식회사 마이크로에너지 | Sludge Dry Apparatus |
| CN204625457U (en) * | 2015-03-11 | 2015-09-09 | 中科实业集团（控股）有限公司 | Sludge drying machine steam trap connection |
| CN108585428B (en) * | 2018-05-22 | 2024-07-23 | 国能龙源环保有限公司 | Disc drier with initiative drainage structures |
| CN109020148A (en) * | 2018-09-07 | 2018-12-18 | 无锡华光锅炉股份有限公司 | A kind of drying sludge processing equipment |
-
2019
- 2019-09-17 CN CN201910876775.8A patent/CN110563305B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209166051U (en) * | 2018-11-13 | 2019-07-26 | 山东凯斯达机械制造有限公司 | A kind of horizontal disc drying machine |
| CN210855773U (en) * | 2019-09-17 | 2020-06-26 | 北京国电龙源环保工程有限公司 | Disc dryer and drainage structure thereof |
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| CN110563305A (en) | 2019-12-13 |
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Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Applicant after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Applicant before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |
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