CN210012737U - Full-energy sludge drying heat pump unit - Google Patents
Full-energy sludge drying heat pump unit Download PDFInfo
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- CN210012737U CN210012737U CN201920196361.6U CN201920196361U CN210012737U CN 210012737 U CN210012737 U CN 210012737U CN 201920196361 U CN201920196361 U CN 201920196361U CN 210012737 U CN210012737 U CN 210012737U
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Abstract
The utility model discloses a full-energy sludge drying heat pump unit, which comprises a heat pump system condenser, wherein the heat pump system condenser comprises an upper condenser and a lower condenser which are connected in series, the inlet end of the heat pump system condenser is communicated with a compressor through a compressor exhaust pipe, a heating and drying lower layer conveyor belt is arranged above the lower condenser, a preheating upper layer conveyor belt is arranged above the upper condenser, and the outlet end of the heat pump system condenser is connected with a heat pump system liquid storage device pipeline through a condenser backflow connecting pipe; the heat pump system liquid storage device is communicated with a heat pump system evaporator through a connecting pipeline, and the heat pump system evaporator is connected with the compressor pipeline to form a heat pump system cycle; the utility model has the advantages that: the energy consumption of the drying equipment is reduced, and the energy efficiency of the dehumidification drying equipment is improved; waste heat emission is reduced, and the purposes of energy conservation and environmental protection are achieved; the manufacturing cost and the resistance of the heat pump system are reduced, and the unit performance is improved.
Description
Technical Field
The utility model relates to a heat pump, specifically speaking are full energy sludge drying heat pump set belongs to the heat pump field.
Background
Along with the development of social economy and urbanization in China, the generation and the quantity of urban sewage are continuously increased, the total treated water quantity and the treatment quality of a sewage treatment plant are continuously enlarged and improved, the generated sludge quantity is also increased, and various types of sludge treatment equipment are developed. The methods are exposed continuously in engineering practice and have large energy consumption; environmental pollution and the like.
The sludge dehumidifying and drying heat pump unit manufactured by utilizing the air-conditioning heat pump principle is energy-saving and environment-friendly due to the double-effect of dehumidifying and drying sludge, but the energy of the heat pump system cannot be fully utilized, and partial heat energy must be discharged out of the heat pump unit to ensure heat balance, so that the dehumidifying and drying efficiency of the heat pump is greatly reduced.
How to further improve the efficiency of the heat pump to dehumidify and dry the sludge has important practical significance.
Disclosure of Invention
In order to solve the problems, the utility model designs a full-energy sludge drying heat pump unit, which reduces the energy consumption of drying equipment and improves the energy efficiency of dehumidification drying equipment; waste heat emission is reduced, and the purposes of energy conservation and environmental protection are achieved; the manufacturing cost and the resistance of the heat pump system are reduced, and the unit performance is improved.
The technical scheme of the utility model is that:
the full-energy sludge drying heat pump unit comprises a heat pump system condenser, wherein the heat pump system condenser is divided into an upper condenser and a lower condenser which are connected in series through a connecting pipe, the inlet end of the heat pump system condenser is communicated with a compressor through a compressor exhaust pipe, a high-temperature and high-pressure refrigerant discharged by the compressor and discharged at about 90 ℃ enters the lower condenser through the compressor exhaust pipe to exchange heat with air flow in the unit, a heating and drying lower-layer conveying belt is arranged above the lower condenser, a preheating upper-layer conveying belt is arranged above the upper condenser, and the outlet end of the heat pump system condenser is connected with a heat pump system liquid reservoir pipeline through a condenser reflux connecting; the heat pump system liquid storage device is communicated with the heat pump system evaporator through a connecting pipeline, and the heat pump system evaporator is connected with the compressor pipeline to form a heat pump system cycle.
And the connecting pipeline is provided with a dry filter, an electromagnetic valve and an expansion valve.
The preheating of the sludge on the upper layer conveyor belt is realized by that the temperature of preheated air is raised after an upper condenser exchanges heat with introduced external preheated air, and the raised preheated air flows through the sludge carried by the upper layer conveyor belt to finish sludge preheating; the preheated sludge falls into the lower-layer conveyor belt along with the operation of the upper-layer conveyor belt to the terminal, and the heat source for continuously dehumidifying and drying the sludge entering the lower-layer conveyor belt is from the air in the unit to exchange heat with the lower condenser, so that the temperature of the air in the unit is raised after heat exchange, and the raised air in the unit flows through the sludge on the lower-layer conveyor belt, thereby achieving the purpose of continuously dehumidifying and drying the sludge.
And the preheated sludge on the upper layer conveyor belt moves to the conveyor belt terminal along with the upper layer conveyor belt and falls into the lower layer conveyor belt.
The air flow in the unit is formed by the wind pressure generated by a fan arranged in the unit.
The air flow in the unit respectively flows through the lower condenser, the sludge on the lower layer conveyor belt and the evaporator along the air channel in the unit, and then flows through the lower condenser again to finish a circulation process of the air flow in the unit. The above cycle is repeated.
High-temperature and high-pressure refrigerant with the temperature of about 90 ℃ discharged by the compressor flows into the lower condenser through the compressor exhaust pipe, so that the temperature of the lower condenser reaches 85 ℃ to exchange heat with air flow in the unit, the air flow in the unit after heat exchange carries the temperature of the lower condenser away and rises, and the air flow in the unit with the raised temperature is in contact with sludge on the lower-layer conveyor belt to dehumidify and dry the lower-layer sludge.
After the lower condenser exchanges heat with air in the unit, the temperature of a refrigerant in the lower condenser is reduced to 55 ℃ from 85 ℃. The refrigerant with the temperature of 55 ℃ flows into the upper layer condenser through the connecting pipelines of the upper and lower condensers so that the temperature of the upper layer condenser is 50 ℃.
The external preheated air flows through the upper condenser under the action of the upper fan to exchange heat, the temperature of the preheated air after heat exchange is raised to 40 ℃ to preheat the sludge loaded on the upper layer of the conveyor belt,
after the upper condenser exchanges heat with preheated air from the outside atmosphere, the temperature of a refrigerant in the upper condenser is further reduced and the refrigerant flows through a reflux connecting pipe of a heat pump system; the water flows into the evaporator of the heat pump system through the reservoir of the heat pump system, the drying filter, the electromagnetic valve and the expansion valve in sequence, and finally flows back to the compressor to complete the circulation of the heat pump system, and the circulation is repeated in cycles.
The heat generated by the whole heat pump system is fully utilized, the energy efficiency ratio of the unit is improved, the energy-saving purpose is achieved, and connecting pipelines in the system are saved.
And the air in the unit forms circulating air flow along the air duct under the action of a fan arranged in the air duct in the unit, and forms circulating air flow through an evaporator, a lower condenser and a lower-layer conveying belt in the heat pump system in sequence.
The temperature of the circulating air flow is raised to 75 ℃ through the lower condenser, when the circulating air flow flows through the lower-layer conveyor belt, the circulating air flow takes away moisture in sludge loaded on the conveyor belt to form high-moisture-content air flow, and the high-moisture-content air flow is condensed by the low-temperature evaporator to precipitate water and is discharged, so that the purposes of dehumidification and drying are achieved; meanwhile, the temperature of the air flow is reduced to about 40 ℃, and one cycle of the air flow dehumidification drying process is completed.
An upper fan is arranged above the upper layer conveyor belt, preheated air flow from outside atmosphere exchanges heat with the upper condenser, the temperature is raised to about 40 ℃, and the preheated air flow flows through the upper layer conveyor belt to preheat sludge and then is discharged through the upper fan. The process recycles the redundant heat of the heat pump system, so that the heat pump system can be stably operated. The waste heat energy of the dehumidification drying heat pump system is recycled, so that the waste heat energy is heated and enters the sludge preheating treatment of the drying equipment in the early stage.
The utility model has the advantages that:
(1) the sludge to be dehumidified is preheated in advance, so that the energy consumption of the drying equipment is reduced, and the energy efficiency of the dehumidifying and drying equipment is improved;
(2) the heat pump system utilizes the full energy, reduces the waste heat emission and achieves the aims of energy conservation and environmental protection;
(3) the heat pump system saves connecting pipelines and parts arranged in the heat pump system for discharging redundant heat, shortens the connecting pipelines of the heat pump system, reduces the manufacturing cost and the resistance of the heat pump system and improves the performance of the unit.
The present invention will be further explained with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of a full-energy sludge drying heat pump unit system according to an embodiment of the present invention;
FIG. 2 is a flow chart of the air circulation of dehumidification drying according to the embodiment of the present invention;
in the figure: 1: an upper conveyor belt; 2: an upper condenser; 3: a lower conveyor belt; 4: a lower condenser; 5: an upper condenser connecting pipe and a lower condenser connecting pipe; 6: a condenser reflux connection pipe; 7: a reservoir; 8: drying the filter; 9: an electromagnetic valve; 10: an expansion valve; 11: an evaporator; 12: a compressor; 13: a compressor discharge pipe; 14: a lower fan; 15: a circulating air stream; 16: preheating the air stream; 17: an upper fan.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.
Example 1
As shown in fig. 1, a full-energy sludge drying heat pump unit comprises a heat pump system condenser, the heat pump system condenser is divided into an upper condenser and a lower condenser, the condensers connected in series through a connecting pipe 5 are a lower condenser 4 and an upper condenser 2, the inlet end of the lower condenser 4 of the heat pump system is communicated with a compressor 12 through a compressor exhaust pipe 13, and the whole heat pump system is discharged by the compressor 12, has about 90 ℃ high-temperature and high-pressure refrigerants which enter the lower condenser 4, the upper condenser connecting pipe 5 and the lower condenser connecting pipe 5, the upper condenser 2, a condenser reflux connecting pipe 6, a liquid storage device 7, a drying filter 8, an electromagnetic valve 9, an expansion valve 10 and an evaporator 11 and flows back to. The above cycle is repeated.
The circulating air flow 15 in the unit circularly flows through the lower condenser 4, the lower layer conveyor belt 3 and the evaporator 11 along the air channel under the action of a lower fan 14 arranged in the air channel in the unit.
A heating and drying lower-layer conveyor belt 3 is arranged above the lower condenser 4, a preheating upper-layer conveyor belt 1 is arranged above the upper condenser 2, and the compressor 12, the compressor exhaust pipe 13 and the outlet end of the lower condenser are connected with a heat pump system liquid storage device 7 through a reflux connecting pipe 6 and a pipeline; the heat pump system liquid storage device 7 is communicated with a heat pump system evaporator 11 through a connecting pipeline, and the compressor heat pump system evaporator 11 is connected with the compressor 12 through a pipeline to form a heat pump system cycle.
The sludge on the lower layer conveyor belt 3 is heated and dried, and reaches the upper condenser 2 through the upper and lower condenser connecting pipes 5 to continue heat exchange.
The compressor 12 discharges about 90 ℃ high-temperature and high-pressure refrigerant, the refrigerant enters the lower condenser 4 through the compressor exhaust pipe 13 to exchange heat with the circulating air flow 15, the temperature of the circulating air flow 15 after heat exchange through the lower condenser 4 is raised to 75 ℃, the 75 ℃ circulating air flow 15 flows through sludge loaded on the lower-layer conveyor belt 3 to continuously take away moisture in the sludge, and therefore the sludge drying effect is achieved.
The refrigerant heat in the lower condenser 4 is taken away by the heat exchange of the circulating air flow 15 and the lower condenser 4, so that the temperature of the refrigerant in the lower condenser 4 is reduced to about 55 ℃, the refrigerant at the temperature of 55 ℃ flows into the upper condenser 2 through the upper and lower condenser connecting pipes 5 to exchange heat with the introduced external preheated air flow 16, the preheated air flow 16 flows through the upper condenser 2 to increase the temperature to 40 ℃, and the preheated air flow 16 at the temperature of 40 ℃ flows through the sludge loaded on the upper layer conveyor belt 1, so that the purpose of preheating the sludge on the upper layer conveyor belt is achieved.
The temperature of the refrigerant in the upper condenser 2 is further reduced after the preheated air flow 16 exchanges heat with the upper condenser 2, and the refrigerant flows through the liquid storage device 7, the drying filter 8, the electromagnetic valve 9 and the expansion valve 10 in sequence through the condenser reflux connecting pipe 6 to enter the heat pump system evaporator 11, and finally flows back to the compressor 12 to complete a heat pump system cycle, and the above cycle is repeated repeatedly.
As shown in fig. 2, the air in the unit forms a circulating air flow 15 along the air duct under the action of a lower fan 14 arranged in the air duct inside the unit, and the circulating air flow 15 is formed by sequentially passing through an evaporator 11, a lower condenser 4 and a lower conveyor belt 3 in the heat pump system.
The temperature of the circulating air flow 15 is raised to 75 ℃ through the lower condenser 4, when the circulating air flow flows through the lower-layer conveyor belt, the circulating air flow takes away moisture in sludge loaded on the conveyor belt to form high-moisture-content air flow, and the high-moisture-content air flow is condensed and precipitated through the low-temperature evaporator 11 to discharge water, so that the purposes of dehumidification and drying are achieved; meanwhile, the temperature of the circulating air flow 15 is reduced to about 40 ℃, and one cycle of the dehumidifying and drying process of the circulating air flow 15 is completed.
The lower fan 14 is arranged in the unit internal air duct, the circulating air flow 15 forms a circulating air flow 15 under the action of the lower fan 14, and the circulating air flow 15 respectively flows through the lower condenser 4, the lower layer conveyor belt 3 and the evaporator 11 to circulate repeatedly along the unit internal air duct under the action of the lower fan 14.
An upper fan 17 is arranged above the upper layer conveyor belt 1, and a preheating air flow 16 from the outside atmosphere is subjected to heat exchange with the upper condenser 2 under the action of the upper fan 17, the temperature is raised to about 40 ℃, and the sludge flows through the sludge loaded on the upper layer conveyor belt 2, so that the purpose of preheating the sludge is achieved and then is discharged through the upper fan 17.
The process fully utilizes the heat generated by the heat pump system, improves the energy efficiency of the unit, and simultaneously ensures that the heat pump system is stably operated.
Claims (7)
1. Full energy sludge drying heat pump set, its characterized in that: the heat pump system condenser comprises a heat pump system condenser, wherein the heat pump system condenser is divided into an upper condenser and a lower condenser which are connected in series through a connecting pipe, the inlet end of the heat pump system condenser is communicated with a compressor through a compressor exhaust pipe, a heating and drying lower-layer conveyor belt is arranged above the lower condenser, a preheating upper-layer conveyor belt is arranged above the upper condenser, and the outlet end of the heat pump system condenser is connected with a heat pump system liquid reservoir pipeline through a condenser reflux connecting pipe; the heat pump system liquid storage device is communicated with the heat pump system evaporator through a connecting pipeline, and the heat pump system evaporator is connected with the compressor pipeline to form a heat pump system cycle.
2. The full-energy sludge drying heat pump unit according to claim 1, characterized in that: and the connecting pipeline is provided with a dry filter, an electromagnetic valve and an expansion valve.
3. The full-energy sludge drying heat pump unit according to claim 1 or 2, characterized in that: the preheating of the sludge on the upper layer conveyor belt is realized by that the temperature of preheated air is raised after an upper condenser exchanges heat with introduced external preheated air, and the raised preheated air flows through the sludge carried by the upper layer conveyor belt to finish sludge preheating; the preheated sludge falls into the lower-layer conveyor belt along with the operation of the upper-layer conveyor belt to the terminal, the heat source for continuously dehumidifying and drying the sludge entering the lower-layer conveyor belt is from the air in the unit to exchange heat with the lower condenser, the air temperature in the unit rises after heat exchange, and the air in the unit after rising flows through the sludge on the lower-layer conveyor belt.
4. The full-energy sludge drying heat pump unit according to claim 1, characterized in that: and the preheated sludge on the upper layer conveyor belt moves to the conveyor belt terminal along with the upper layer conveyor belt and falls into the lower layer conveyor belt.
5. The full-energy sludge drying heat pump unit according to claim 1, characterized in that: the air flow in the unit is formed by the wind pressure generated by a fan arranged in the unit.
6. The full-energy sludge drying heat pump unit according to claim 1, characterized in that: the air flow in the unit respectively flows through the lower condenser, the sludge on the lower layer conveyor belt and the evaporator along the air channel in the unit, and then flows through the lower condenser again to finish a circulation process of the air flow in the unit.
7. The full-energy sludge drying heat pump unit according to claim 1, characterized in that: after the upper condenser exchanges heat with preheated air from the outside atmosphere, the temperature of a refrigerant in the upper condenser is further reduced and the refrigerant flows through a reflux connecting pipe of a heat pump system; flows through a liquid storage device, a drying filter, an electromagnetic valve and an expansion valve of the heat pump system in sequence, flows into an evaporator of the heat pump system, and finally flows back to a compressor to complete circulation of the heat pump system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196361.6U CN210012737U (en) | 2019-02-14 | 2019-02-14 | Full-energy sludge drying heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196361.6U CN210012737U (en) | 2019-02-14 | 2019-02-14 | Full-energy sludge drying heat pump unit |
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| CN210012737U true CN210012737U (en) | 2020-02-04 |
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| CN201920196361.6U Active CN210012737U (en) | 2019-02-14 | 2019-02-14 | Full-energy sludge drying heat pump unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112694145A (en) * | 2020-12-15 | 2021-04-23 | 苏州翔云节能科技有限公司 | Energy-saving industrial wastewater concentration device and industrial wastewater concentration method |
| CN113371971A (en) * | 2020-11-24 | 2021-09-10 | 湖南清源智造设备有限公司 | Heat pump sludge drying system and sludge drying equipment |
-
2019
- 2019-02-14 CN CN201920196361.6U patent/CN210012737U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113371971A (en) * | 2020-11-24 | 2021-09-10 | 湖南清源智造设备有限公司 | Heat pump sludge drying system and sludge drying equipment |
| CN113371971B (en) * | 2020-11-24 | 2022-10-28 | 北京清源华建环境科技有限公司 | Heat pump sludge drying system and sludge drying equipment |
| CN112694145A (en) * | 2020-12-15 | 2021-04-23 | 苏州翔云节能科技有限公司 | Energy-saving industrial wastewater concentration device and industrial wastewater concentration method |
| CN112694145B (en) * | 2020-12-15 | 2023-02-28 | 苏州翔云节能科技有限公司 | Energy-saving industrial wastewater concentration device and industrial wastewater concentration method |
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