CN211734149U - Sludge low-temperature dehumidifying dryer - Google Patents
Sludge low-temperature dehumidifying dryer Download PDFInfo
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- CN211734149U CN211734149U CN201922000482.1U CN201922000482U CN211734149U CN 211734149 U CN211734149 U CN 211734149U CN 201922000482 U CN201922000482 U CN 201922000482U CN 211734149 U CN211734149 U CN 211734149U
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Abstract
The utility model discloses a mud low temperature dehumidification desiccator, including closed casing, guipure conveying mechanism, be provided with import, export on the casing, the mud of guipure conveying mechanism import is carried to the export, be provided with heat pump compressor in the casing, heat pump compressor forms the hot air with the air heating in the casing and dries the mud on the guipure conveying mechanism, the hot air forms waste hot water vapour, be provided with vacuum negative pressure heating system in the casing for waste hot water vapour in the heating casing. A closed mechanism is adopted to dehumidify the sludge, drying air generated by a heat pump compressor is in closed circulation between a mesh belt conveying mechanism and a vacuum negative pressure heat supply system, waste heat and waste gas are not discharged, the vacuum negative pressure heat supply system is used for heating waste hot water vapor in a machine shell and then heating the air in the closed machine shell, sludge can be rapidly dehumidified, and energy consumption is reduced.
Description
Technical Field
The utility model relates to a mud low temperature dehumidification desiccator.
Background
The sewage sludge treatment industry in China mostly adopts a press filter pressing process to remove water in sludge, and the equipment of the process is heavy and has certain influence on the surrounding environment due to an open structure. In addition, the traditional hot air drying is an open system (discharging waste heat) which heats air in a drying chamber by using a heat source and discharges the air after moisture absorption, and the energy utilization rate is low (20% -50%).
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a low-temperature sludge dehumidifying dryer with low energy consumption.
In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides a mud low temperature dehumidification desiccator, includes closed casing, guipure conveying mechanism, be provided with import, export on the casing, guipure conveying mechanism imports's mud is carried to the export, be provided with heat pump compressor in the casing, heat pump compressor forms hot air and dries the mud on the guipure conveying mechanism with the air heating in the casing, hot air forms waste hot water vapour, be provided with vacuum negative pressure heating system in the casing for waste hot water vapour in the heating casing.
The beneficial effects of the utility model are that, adopt closed mechanism to come to sludge dehumidification, the drying air that heat pump compressor produced carries out the closed circulation between guipure conveying mechanism and vacuum negative pressure heating system, does not discharge any used heat waste gas, and vacuum negative pressure heating system is used for behind the useless hot water vapour in the heating casing and to the air intensification in the closed casing, can be quick to sludge dehumidification, has reduced the energy consumption.
Preferably, the vacuum negative pressure heat supply system comprises a steam compressor, a vacuum tank, a first vacuum pump and a heat exchanger, the waste hot water is connected with an inlet of a coil pipe in the vacuum tank, a heat-conducting medium is stored in the vacuum tank, the first vacuum pump is connected with the top of the vacuum tank, and the upper part and the lower part of the vacuum tank are connected with the heat exchanger through a pipeline. The steam compressor is a key device of the heat recovery system for increasing the temperature and the pressure of steam by compressing the generated steam. The function is to pressurize and heat low-pressure (or low-temperature) steam to meet the temperature and pressure requirements required by the process or engineering. The steam compressor heats the heat-conducting medium in the vacuum tank after heating the waste hot water vapor, and the vacuum tank is vacuumized, so that the boiling point of the heat-conducting medium in the vacuum tank is reduced, high-temperature steam is easy to generate, heat exchange of the high-temperature steam in the heat exchanger is facilitated, and operations such as heating and drying of air in the shell are realized.
Preferably, the vacuum negative pressure heat supply system further comprises a multi-loop counter-flow type preheater, and an outlet of the coil pipe in the vacuum tank is connected with the multi-loop counter-flow type preheater through a pipeline. Waste hot water vapor can still have a part of heat after passing through the coil pipe in the vacuum tank, and then enters the multi-loop counter-flow type preheater to heat fresh air which can enter the preheater so as to improve the air temperature in the casing and realize the efficient drying of sludge.
Preferably, two first vacuum pumps are arranged, and a vacuum butterfly valve and a vacuum gauge are sequentially arranged between each first vacuum pump and the vacuum tank; and a butterfly valve is arranged at the bottom of the vacuum tank. To achieve the alternation.
Preferably, a high liquid level meter and a low liquid level meter are arranged in the vacuum tank. The liquid level in the vacuum tank is monitored in real time; or/and a thermometer is arranged in the vacuum tank. And displaying the temperature in the vacuum tank in real time.
Preferably, an ozone generator is arranged in the machine shell and used for disinfection and deodorization.
Preferably, guipure conveying mechanism includes the guipure of a plurality of levels settings, every the guipure drives the operation by the driving source, the guipure can be followed the top and transported to the terminal, and is a plurality of the guipure is from last to lower dislocation set in proper order, the below the beginning of guipure, terminal respectively with the terminal of the guipure of top, the top corresponds. Each mesh belt is conveyed to the other end from one horizontal end, the drying time of sludge in the shell of the dryer is prolonged, the mesh belts are arranged in a staggered mode, and the mesh belt below receives the sludge falling from the mesh belt above. The sludge is integrally conveyed in the shell in an S shape, so that the drying time of the sludge in the shell of the dryer is prolonged, and the energy consumption is reduced.
Preferably, the starting end of the mesh belt on the uppermost layer corresponds to an inlet on the machine shell, and the starting end of the mesh belt on the uppermost layer is provided with a negative pressure dewatering device. The negative pressure dewatering device is used for dewatering sludge, and the humidity in the shell is reduced.
Preferably, the negative pressure dehydration device comprises a negative pressure water absorption disc and a second vacuum pump, and the second vacuum pump is connected with the negative pressure water absorption disc. Specifically, the sludge is dewatered by using a second vacuum pump and a negative pressure water absorption disc, and the dewatered sludge is conveyed to an outlet by a mesh belt conveying mechanism.
Preferably, a fan is arranged inside each mesh belt, an air inlet and an air outlet are arranged on each mesh belt, the air inlet of each mesh belt faces downwards, and the air outlet of each mesh belt faces upwards. And a fan in the mesh belt controls hot air to move from the lower part of the mesh belt to the upper part of the mesh belt.
Drawings
FIG. 1 is a front view of the present embodiment;
FIG. 2 is a side view of the present embodiment;
fig. 3 is a schematic structural diagram of the vacuum negative pressure heating system in this embodiment.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to the attached drawings 1-3, the sludge low-temperature dehumidification dryer of the embodiment includes a closed casing 1 and a mesh belt conveying mechanism 2, an inlet 3 and an outlet 4 are arranged on the casing 1, sludge at the inlet 3 of the mesh belt conveying mechanism 2 is conveyed to the outlet 4, a heat pump compressor 5 and an ozone generator 22 are arranged in the casing 1, the heat pump compressor 5 heats air in the casing 1 to form hot air and dries the sludge on the mesh belt conveying mechanism 2, the hot air forms waste hot water vapor, and a vacuum negative pressure heat supply system is arranged in the casing 1 to heat the waste hot water vapor in the casing 1. An ash receiving disc 24 is arranged in the machine shell 1, and a guide fan can be arranged in the ash receiving disc 24 and used for sucking dust in the machine shell 1 into the ash receiving disc 24.
The vacuum negative pressure heat supply system comprises a steam compressor 6, a vacuum tank 7, a first vacuum pump 8 and a heat exchanger 9, waste hot water steam is connected with an inlet of a coil pipe 10 in the vacuum tank 7, a heat-conducting medium is stored in the vacuum tank 7, the first vacuum pump 8 is connected with the top of the vacuum tank 7, and the upper part and the lower part of the vacuum tank 7 are connected with the heat exchanger 9 through a pipeline. The vacuum negative pressure heat supply system in the embodiment further comprises a multi-loop counter-flow type preheater 11, and the outlet 4 of the coil 10 in the vacuum tank 7 is connected with the multi-loop counter-flow type preheater 11 through a pipeline.
Two first vacuum pumps 8 are arranged, and a vacuum butterfly valve 12 and a vacuum meter 13 are sequentially arranged between each first vacuum pump 8 and the vacuum tank 7; the bottom of the vacuum tank 7 is provided with a butterfly valve 14.
A high level gauge 15 and a low level gauge 16 are provided in the vacuum tank 7, and a thermometer 17 is provided in the vacuum tank 7 in this embodiment.
The mesh belt conveying mechanism 2 comprises a plurality of mesh belts 18 which are horizontally arranged, each mesh belt 18 is driven by a driving source to operate, the mesh belts 18 can be conveyed from an initial end A to a terminal end B, the mesh belts 18 are sequentially arranged from top to bottom in a staggered mode, and the initial end A and the terminal end B of the mesh belt 18 below correspond to the terminal end B and the initial end A of the mesh belt 18 above. A fan 21 is arranged inside each mesh belt 18, an air inlet and an air outlet are arranged on the mesh belts 18, the air inlet of each mesh belt 18 faces downwards, and the air outlet faces upwards.
The starting end A of the mesh belt 18 at the uppermost layer corresponds to the inlet 3 on the machine shell 1, and the starting end A of the mesh belt 18 at the uppermost layer is provided with a negative pressure dewatering device 19. The negative pressure dehydration device 19 comprises a negative pressure water absorption disc and a second vacuum pump 20, and the second vacuum pump 20 is connected with the negative pressure water absorption disc. The inlet 3 and the negative pressure dehydration device 19 can also be provided with a slitting device 23 for extruding the sludge into blocks, and part of water falls into the negative pressure water absorption disc.
The sludge enters through the top inlet 3 of the casing 1, and is extruded into blocks through the granulating or slitting device 23, and then falls into the mesh belt conveying mechanism 2 for transmission, the mesh belts 18 in the embodiment are provided with two mesh belts, the two mesh belts work uninterruptedly, because the fan 21 is arranged inside each mesh belt 18, dry hot air is sent from the middle part of each mesh belt (air supply temperature is 75 ℃), moisture in the sludge is vaporized continuously after absorbing heat, a large amount of vapor is generated and is brought back to the top of the mesh belt 18, the hot air is circulated back to the steam compressor 6 through a power source (such as a fan) from the top, enters a heat-conducting medium (such as a liquid medium) in the vacuum tank 7 of the vacuum negative pressure heat supply system after being pressurized and heated by the steam compressor 6, enters the multi-loop cross counter-flow preheater 11 to preheat fresh air, and finally enters the air energy, the moisture is collected and discharged in a condensing and dehumidifying mode.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (10)
1. The utility model provides a mud low temperature dehumidification desiccator which characterized in that: including closed casing (1), guipure conveying mechanism (2), be provided with import (3), export (4) on casing (1), guipure conveying mechanism (2) import (3) mud is carried to export (4), be provided with heat pump compressor (5) in casing (1), heat pump compressor (5) heat the air in casing (1) and form hot-air and dry the mud on guipure conveying mechanism (2), hot-air forms waste hot water vapour, be provided with vacuum negative pressure heating system in casing (1) for the waste hot water vapour in heating casing (1).
2. The low-temperature sludge dehumidifying dryer of claim 1, wherein: the vacuum negative pressure heat supply system comprises a vapor compressor (6), a vacuum tank (7), a first vacuum pump (8) and a heat exchanger (9), waste hot water vapor is connected with an inlet of a coil (10) in the vacuum tank (7), a heat-conducting medium is stored in the vacuum tank (7), the first vacuum pump (8) is connected with the top of the vacuum tank (7), and the upper part and the lower part of the vacuum tank (7) are connected with the heat exchanger (9) through a pipeline.
3. The low-temperature sludge dehumidifying dryer of claim 2, wherein: the vacuum negative pressure heat supply system further comprises a multi-loop counter-flow type preheater (11), and an outlet (4) of the coil (10) in the vacuum tank (7) is connected with the multi-loop counter-flow type preheater (11) through a pipeline.
4. The low-temperature sludge dehumidifying dryer of claim 2, wherein: two first vacuum pumps (8) are arranged, and a vacuum butterfly valve (12) and a vacuum meter (13) are sequentially arranged between each first vacuum pump (8) and the vacuum tank (7); the bottom of the vacuum tank (7) is provided with a butterfly valve (14).
5. The low-temperature sludge dehumidifying dryer of claim 2, wherein: a high liquid level meter (15) and a low liquid level meter (16) are arranged in the vacuum tank (7), or/and a thermometer (17) is arranged in the vacuum tank (7).
6. The low-temperature sludge dehumidifying dryer of claim 1, wherein: an ozone generator (22) is arranged in the machine shell (1).
7. The low-temperature sludge dehumidifying dryer of claim 1, wherein: guipure conveying mechanism (2) are including guipure (18) that a plurality of levels set up, every guipure (18) are driven the operation by the driving source, guipure (18) can be transported to terminal (B) from top (A), and are a plurality of guipure (18) are from last to lower dislocation set in proper order, the below beginning (A), terminal (B) of guipure (18) correspond with terminal (B), the top (A) of guipure (18) of top respectively.
8. The low-temperature sludge dehumidifying dryer of claim 7, wherein: the top layer of the net belt (18) is provided with a starting end (A) corresponding to the inlet (3) on the machine shell (1), and the top layer of the net belt (18) is provided with a negative pressure dewatering device (19).
9. The low-temperature sludge dehumidifying dryer of claim 8, wherein: the negative pressure dehydration device (19) comprises a negative pressure water absorption disc and a second vacuum pump (20), and the second vacuum pump (20) is connected with the negative pressure water absorption disc.
10. The low-temperature sludge dehumidifying dryer of claim 7, wherein: a fan (21) is arranged inside each mesh belt (18), an air inlet and an air outlet are arranged on each mesh belt (18), the air inlet of each mesh belt (18) faces downwards, and the air outlet of each mesh belt (18) faces upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922000482.1U CN211734149U (en) | 2019-11-19 | 2019-11-19 | Sludge low-temperature dehumidifying dryer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922000482.1U CN211734149U (en) | 2019-11-19 | 2019-11-19 | Sludge low-temperature dehumidifying dryer |
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| CN211734149U true CN211734149U (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818222A (en) * | 2019-11-19 | 2020-02-21 | 苏州乐宏环保科技有限公司 | Sludge low-temperature dehumidifying dryer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110818222A (en) * | 2019-11-19 | 2020-02-21 | 苏州乐宏环保科技有限公司 | Sludge low-temperature dehumidifying dryer |
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