CN210635871U - Heat exchange device for sludge treatment - Google Patents
Heat exchange device for sludge treatment Download PDFInfo
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- CN210635871U CN210635871U CN201921186534.2U CN201921186534U CN210635871U CN 210635871 U CN210635871 U CN 210635871U CN 201921186534 U CN201921186534 U CN 201921186534U CN 210635871 U CN210635871 U CN 210635871U
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- kiln
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- kiln body
- sludge treatment
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Abstract
The utility model provides a pair of heat transfer device for sludge treatment, including the rotary kiln that is used for carbomorphism mud, the rotary kiln is including the kiln tail, the kiln body and the kiln head that connect gradually, and the kiln body includes multistage formula heating chamber, and the target heating temperature of heating chamber increases from the kiln tail to the kiln head in proper order, is equipped with the passageway that is used for the air current to flow to the kiln tail from the kiln head between the adjacent heating chamber. The utility model discloses can carry out accurate drying to the mud that lies in this heating chamber, avoid the waste of energy, can make the hot-air that has vapor simultaneously by kiln head flow direction kiln tail, with the opposite direction of transportation of mud, preheat the mud that has just got into the kiln body by the kiln tail, avoid vapor to flow to the kiln head simultaneously, influence the carbomorphism quality of mud.
Description
Technical Field
The utility model relates to a sludge treatment equipment technical field, concretely relates to heat transfer device for sludge treatment.
Background
With the successive increase of sewage treatment plants in China, the total sludge yield in the whole country is over 3500 million tons. The traditional rotary kiln is adopted to carbonize sludge in the prior art, but the traditional rotary kiln is a single-section whole barrel, a kiln body is supported by a plurality of groups of supporting and blocking wheel devices, a transmission device drives the kiln body to rotate through a large gear, the kiln tail is generally fed, the kiln head is discharged, and a heat supply source is arranged at the kiln head. However, the energy required by the reaction in the kiln is supplied by the kiln head of the kiln body, the materials in the kiln are not carbonized uniformly, the energy consumption is high, sintering is easy to occur, and the product quality is influenced unstably.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a heat transfer device for sludge treatment.
The utility model provides a pair of heat transfer device for sludge treatment, including the rotary kiln that is used for carbomorphism mud, the rotary kiln is including the kiln tail, the kiln body and the kiln head that connect gradually, and the kiln body includes multistage formula heating chamber, and the target heating temperature of heating chamber increases from the kiln tail to the kiln head in proper order, is equipped with the passageway that is used for the air current to flow to the kiln tail from the kiln head between the adjacent heating chamber.
Preferably, the kiln body comprises a multi-section rotary kiln body and at least one section of fixed kiln body, the fixed kiln body is arranged between two adjacent rotary kiln bodies, and a sealing device is arranged between the fixed kiln body and the adjacent rotary kiln body;
each section of kiln body is provided with a heating mechanism for heating the section of kiln body, and the target heating temperature of the heating mechanism is increased from the kiln tail to the kiln head in sequence;
the fixed section kiln is internally provided with a spiral feeding mechanism, the spiral feeding mechanism comprises a conveying spiral, one end of the conveying spiral extends into the adjacent rotary section kiln body, the rotary section kiln body is fixedly connected with the inner wall of the rotary section kiln body, the conveying spiral is provided with a rotary shaft, through holes penetrating through two ends of the rotary shaft are formed in the rotary shaft, and one-way valves used for gas flowing from the kiln head to the kiln tail are arranged in the through holes.
Preferably, the two ends of the through hole are respectively provided with a filter screen.
Preferably, one end of the rotary section kiln body close to the kiln head is provided with a variable-diameter section, and the inner wall of the variable-diameter section is provided with a material raising plate.
Preferably, the rotary kiln further comprises a rotary driving assembly which is in driving connection with the rotary kiln body to drive the rotary kiln body to rotate.
Preferably, the rotary driving assembly comprises a plurality of rotary driving motors, driving gears are arranged on output shafts of the rotary driving motors, and driven gear rings meshed with the driving gears are arranged on the rotary kiln body.
Preferably, the sealing means comprises a labyrinth and a fish scale structure arranged outside the labyrinth.
Preferably, the kiln tail air exhaust device further comprises an air exhaust mechanism, and the air exhaust mechanism is communicated with the kiln tail.
Preferably, the gas storage mechanism is used for storing gas and is communicated with the air draft mechanism.
The utility model provides a pair of heat transfer device for sludge treatment has following beneficial effect:
(1) through setting up multistage formula heating chamber, the target heating temperature of heating chamber increases from the kiln tail to the kiln head in proper order, can carry out accurate drying to the mud that is located in this heating chamber, avoids the waste of energy.
(2) The passage for the airflow to flow from the kiln head to the kiln tail is arranged between the adjacent heating chambers, so that hot air with water vapor flows from the kiln head to the kiln tail, the transportation direction of the hot air is opposite to that of the sludge, the sludge which just enters the kiln body from the kiln tail is preheated, and the phenomenon that the water vapor flows to the kiln head to influence the carbonization quality of the sludge is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a heat exchange device for sludge treatment provided by the utility model.
Detailed Description
Referring to fig. 1, the utility model provides a heat transfer device for sludge treatment, including the rotary kiln that is used for carbomorphism mud, the rotary kiln is including kiln tail 1, the kiln body 2 and the kiln head 3 that connect gradually, and the kiln body 2 includes multistage formula heating chamber, and the target heating temperature of heating chamber increases from kiln tail 1 to kiln head 3 in proper order, is equipped with the passageway that is used for the air current to flow to kiln tail 1 from kiln head 3 between the adjacent heating chamber.
The utility model has the advantages that by arranging the multi-section heating chamber, the target heating temperature of the heating chamber is increased from the kiln tail 1 to the kiln head 3 in sequence, so that the sludge in the heating chamber can be accurately dried, and the energy waste is avoided; and a channel for airflow to flow from the kiln head 3 to the kiln tail 1 is arranged between the adjacent heating chambers, so that hot air with water vapor can flow from the kiln head 3 to the kiln tail 1, the transport direction of the hot air is opposite to that of the sludge, the sludge which just enters the kiln body 2 from the kiln tail 1 is preheated, and the phenomenon that the water vapor flows to the kiln head 3 to influence the carbonization quality of the sludge is avoided.
In the embodiment, the kiln body 2 comprises a plurality of sections of rotary kiln bodies 21 and at least one section of fixed kiln body 22, the fixed kiln body 22 is arranged between two adjacent rotary kiln bodies 21, and a sealing device is arranged between the fixed kiln body 22 and the adjacent rotary kiln body 21 to improve the sealing property between the fixed kiln body 22 and the adjacent rotary kiln body 21;
each section of kiln body 2 is provided with a heating mechanism 4 for heating the section of kiln body 2, and the target heating temperature of the heating mechanism 4 is sequentially increased from the kiln tail 1 to the kiln head 3, so that the rotary section kiln body 21 or the fixed section kiln body 22 with the heating mechanism forms a section of heating chamber to accurately dry sludge in the heating chamber, and energy waste is avoided;
a spiral feeding mechanism is arranged in the fixed section kiln body 22 and comprises a conveying spiral 5, one end of the conveying spiral 5 extends into the adjacent rotary section kiln body 21 and is fixedly connected with the inner wall of the rotary section kiln body 21,
the conveying screw 5 is matched with the inner wall of the fixed-section kiln body 22 to extrude, crush and transport the sludge, so that the sludge is uniformly heated, and the carbonization quality of the sludge is improved;
the conveying screw 5 is provided with a rotating shaft, a through hole penetrating through two ends of the rotating shaft is formed in the rotating shaft, a one-way valve used for enabling gas to flow from the kiln head 3 to the kiln tail 1 is arranged in the through hole, hot air with water vapor can flow from the kiln head 3 to the kiln tail 1, the conveying direction of the hot air with water vapor is opposite to the conveying direction of sludge, the sludge which just enters the kiln body 2 from the kiln tail 1 is preheated, and meanwhile, the phenomenon that the water vapor flows to the kiln head 3 to influence the carbonization quality of the sludge is avoided.
In the embodiment, the two ends of the through hole are respectively provided with the filter screen so as to prevent the sludge from blocking the one-way valve and influencing the circulation of the gas.
In the embodiment, one end of the rotary kiln body 21 close to the kiln head 3 is provided with a variable-diameter section, and the inner wall of the variable-diameter section is provided with a material raising plate. At the reducing section, mud is taken up along with the rotation of reducing section, and mud is taken to the top of reducing section by the lifting blade simultaneously, and mud will be continuous be mentioned, fall down relapse and get into the heat exchange with the carbomorphism quality that gets into steam through the through-hole on the rotation axis in order to improve mud, and the material that flows out the reducing section continues to move forward, gets into rather than adjacent fixed segment kiln body 22.
In the embodiment, the rotary kiln further comprises a rotary driving assembly, and the rotary driving assembly is in driving connection with the rotary kiln body 21 to drive the rotary kiln body 21 to rotate, so that the sludge descends along the inclined direction of the rotary kiln and enters the fixed kiln body 22 adjacent to the rotary kiln body.
In the present embodiment, the rotary drive assembly includes a plurality of rotary drive motors, a driving gear is provided on an output shaft of the rotary drive motor, and a driven gear ring engaged with the driving gear is provided on the rotary kiln body 21. The rotary driving motor works to drive the driving gear to rotate, so as to drive the driven gear ring meshed with the driving gear ring to rotate to drive the rotary section kiln body 21 to rotate.
In this embodiment, the sealing means comprises a labyrinth and a fish scale arranged outside the labyrinth. The double-layer sealing is carried out on the joint of the rotary section kiln body 21 and the fixed section kiln body 22 through the labyrinth structure and the fish scale structure, the sealing performance of the device is improved, meanwhile, the overflow of heat is reduced, and energy is saved.
In the embodiment, the kiln tail structure further comprises an air draft mechanism, and the air draft mechanism is communicated with the kiln tail 1. The air draft mechanism works to enable hot air with water vapor to flow from the kiln head 3 to the kiln tail 1, the direction of the hot air is opposite to the conveying direction of sludge, and then the hot air is exhausted through the air draft mechanism. The air draft mechanism is an exhaust fan.
In the embodiment, the gas storage device further comprises a gas storage mechanism for storing gas, and the gas storage mechanism is communicated with the air draft mechanism. In the process of sludge carbonization, organic matters in the sludge are partially pyrolyzed to generate combustible pyrolysis gas, and the pyrolysis gas is recovered by using a gas storage mechanism for reuse for heat supply, so that the energy efficiency is effectively improved, and the energy waste is avoided.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a heat transfer device for sludge treatment, its characterized in that, is including the rotary kiln that is used for carbomorphism mud, and the rotary kiln is including kiln tail (1), the kiln body (2) and kiln head (3) that connect gradually, and the kiln body (2) are including multistage formula heating chamber, and the target heating temperature of heating chamber increases from kiln tail (1) to kiln head (3) in proper order, is equipped with the passageway that is used for the air current to flow to kiln tail (1) from kiln head (3) between the adjacent heating chamber.
2. The heat exchange device for sludge treatment according to claim 1, wherein the kiln body (2) comprises a plurality of sections of rotary kiln bodies (21) and at least one section of fixed kiln body (22), the fixed kiln body (22) is arranged between two adjacent rotary kiln bodies (21), and a sealing device is arranged between the fixed kiln body (22) and the adjacent rotary kiln body (21);
each section of the kiln body (2) is provided with a heating mechanism (4) for heating the section of the kiln body (2), and the target heating temperature of the heating mechanism (4) is increased from the kiln tail (1) to the kiln head (3) in sequence;
be equipped with spiral feeding mechanism in the fixed section kiln body (22), spiral feeding mechanism is including carrying spiral (5), carries spiral (5) one end to stretch into in the adjacent rotatory section kiln body (21), and with this rotatory section kiln body (21) inner wall fixed connection, carries spiral (5) to have the rotation axis, sets up the through-hole that runs through its both ends on the rotation axis, is equipped with in the through-hole to be used for gas to flow to the check valve of kiln tail (1) from kiln head (3).
3. The heat exchanger for sludge treatment according to claim 2, wherein the two ends of the through hole are respectively provided with a filter screen.
4. The heat exchange device for sludge treatment according to claim 2, wherein one end of the rotary kiln body (21) close to the kiln head (3) is provided with a reducer section, and the inner wall of the reducer section is provided with a material raising plate.
5. The heat exchange device for sludge treatment according to claim 2, further comprising a rotary driving assembly, wherein the rotary driving assembly is in driving connection with the rotary kiln body (21) to drive the rotary kiln body (21) to rotate.
6. The heat exchange device for sludge treatment according to claim 5, wherein the rotary driving assembly comprises a plurality of rotary driving motors, the output shafts of the rotary driving motors are provided with driving gears, and the rotary kiln body (21) is provided with driven gear rings meshed with the driving gears.
7. The heat exchange device for sludge treatment according to claim 2, wherein the sealing device comprises a labyrinth structure and a fish scale structure arranged outside the labyrinth structure.
8. The heat exchange device for sludge treatment according to claim 1, further comprising an air draft mechanism, wherein the air draft mechanism is communicated with the kiln tail (1).
9. The heat exchange device for sludge treatment according to claim 8, further comprising a gas storage mechanism for storing gas, wherein the gas storage mechanism is communicated with the air draft mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186534.2U CN210635871U (en) | 2019-07-25 | 2019-07-25 | Heat exchange device for sludge treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921186534.2U CN210635871U (en) | 2019-07-25 | 2019-07-25 | Heat exchange device for sludge treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210635871U true CN210635871U (en) | 2020-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921186534.2U Active CN210635871U (en) | 2019-07-25 | 2019-07-25 | Heat exchange device for sludge treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210635871U (en) |
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2019
- 2019-07-25 CN CN201921186534.2U patent/CN210635871U/en active Active
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