CN216764370U - Low-temperature vacuum evaporation equipment - Google Patents
Low-temperature vacuum evaporation equipment Download PDFInfo
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- CN216764370U CN216764370U CN202123263569.1U CN202123263569U CN216764370U CN 216764370 U CN216764370 U CN 216764370U CN 202123263569 U CN202123263569 U CN 202123263569U CN 216764370 U CN216764370 U CN 216764370U
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- heat exchanger
- waste liquid
- exchange medium
- heat exchange
- vacuum evaporation
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Abstract
The present invention provides a low temperature vacuum evaporation apparatus, comprising: the evaporating pot is used for evaporating the waste liquid; a first heat exchanger for heating the waste liquid; the condensing tank is connected with the evaporating tank and is provided with a second heat exchanger for cooling steam generated in the evaporating tank; the pressure reducing device is used for vacuumizing the evaporation tank; the heat pump system comprises a compressor and a throttling device, wherein the compressor, a first heat exchanger, the throttling device and a second heat exchanger are connected into a loop through pipelines, and a first heat exchange medium flows through the loop; the cooling device is arranged between the compressor and the first heat exchanger and used for cooling a first heat exchange medium passing through the compressor, and the first heat exchange medium is introduced into the first heat exchanger after being cooled by the cooling device. So set up, prevent that the inside part of evaporating pot from producing higher temperature for the waste liquid produces the bumping, and then influences the quality of water of evaporation play.
Description
Technical Field
The utility model relates to the technical field of environment-friendly equipment, in particular to low-temperature vacuum evaporation equipment.
Background
In the waste water evaporation treatment equipment, a heat pump system is often used for supplying heat to waste water and condensing steam generated by evaporation, and in the system, a compressor is used for compressing a refrigerant to provide a high-temperature heat source, so that the evaporation efficiency is high, and the treatment capacity is large. In low temperature evaporation equipment, owing to set up evacuating device and carry out decompression processing to the evaporation tank inside for waste liquid evaporating temperature reduces, when the refrigerant of higher temperature heats the waste liquid as the heat source, the waste liquid part can produce higher temperature, can produce the bumping phenomenon under the decompression state, consequently, often thoughtlessly have more waste liquid drop in the produced steam of evaporation, makes low temperature vacuum evaporation equipment go out water quality of water relatively poor.
Therefore, it is necessary to design a low-temperature vacuum evaporation apparatus to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide low-temperature vacuum evaporation equipment for preventing waste liquid from bumping.
In order to achieve the purpose, the utility model adopts the following technical scheme: a low temperature vacuum evaporation apparatus, comprising:
the evaporating pot is used for evaporating the waste liquid;
the first heat exchanger is arranged inside or outside the evaporation tank and used for heating waste liquid;
the condensation tank is connected with the evaporation tank and is provided with a second heat exchanger for cooling steam generated in the evaporation tank;
the pressure reducing device is used for vacuumizing the evaporation tank;
the heat pump system comprises a compressor and a throttling device, wherein the compressor, a first heat exchanger, the throttling device and a second heat exchanger are connected into a loop through pipelines, and a first heat exchange medium flows through the loop;
the cooling device is arranged between the compressor and the first heat exchanger and used for cooling a first heat exchange medium passing through the compressor, and the first heat exchange medium is introduced into the first heat exchanger after being cooled by the cooling device.
As a further improved technical solution of the present invention, the cooling device is a heat exchanger, the heat exchanger has a first channel for passing a first heat exchange medium, a second channel for passing a second heat exchange medium, and a partition wall located between the first channel and the second channel, and the second heat exchange medium is used for cooling the first heat exchange medium.
As a further improved technical scheme of the utility model, the cooling device is a plate heat exchanger, a shell-and-tube heat exchanger or a coil heat exchanger.
As a further improved technical scheme, the cooling device is a wind condenser.
As a further improved technical scheme, the evaporator further comprises a waste liquid circulating pipeline and a pump arranged on the waste liquid circulating pipeline, the evaporator is provided with a waste liquid circulating inlet and a waste liquid circulating outlet, and two ends of the waste liquid circulating pipeline are respectively connected with the waste liquid circulating inlet and the waste liquid circulating outlet.
As a further improved technical scheme of the utility model, the waste liquid circulating pipeline is connected with a concentrated liquid discharge pipeline.
As a further improved technical scheme, the first heat exchanger is arranged inside the evaporating pot and comprises a plurality of mosquito coil pipes which are arranged in a stacked mode.
As a further improved technical solution of the present invention, the throttling device is an expansion valve.
As a further improved technical scheme of the utility model, an air condenser is also arranged between the first heat exchanger and the throttling device.
According to the technical scheme, the cooling device is arranged between the compressor and the first heat exchanger, so that the high-temperature heat exchange medium discharged by the compressor is cooled, and then the high-temperature heat exchange medium is introduced into the first heat exchanger to heat the waste liquid, so that the high temperature generated in the local part of the evaporation tank is prevented, the waste liquid is prevented from bumping, and the quality of evaporated water is further influenced.
Drawings
Fig. 1 is a schematic view of a low-temperature vacuum evaporation apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of the cooling device in fig. 1.
FIG. 3 is a schematic view of a cooling device according to another embodiment of the present invention.
FIG. 4 is a schematic view of a cooling device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the present invention provides a low-temperature vacuum evaporation apparatus, which includes an evaporation tank 1 for evaporating waste liquid, a first heat exchanger 2 for heating the waste liquid, a condensation tank 3 connected to the evaporation tank 1, a second heat exchanger (not shown) for cooling steam, a heat pump system for providing a heat exchange medium, a pressure reduction device 6 for vacuumizing the evaporation tank 1, and a temperature reduction device 5.
The evaporating pot 1 is provided with a waste liquid inlet 12, a steam outlet 11, a waste liquid circulating inlet 13 and a waste liquid circulating outlet 14. Preferably, the steam outlet 11 is arranged at or near the top of the evaporation tank 1; a waste liquid circulation inlet 13 is provided at the lower part of the evaporation tank 1, and a waste liquid circulation outlet 14 is provided at the bottom of the evaporation tank 1. In this embodiment, the low-temperature vacuum evaporation apparatus further includes a waste liquid circulation pipeline 71 and a pump 72 disposed on the waste liquid circulation pipeline 71 to circularly evaporate the waste liquid in the evaporation tank 1, and two ends of the waste liquid circulation pipeline 71 are respectively connected to the waste liquid circulation inlet 13 and the waste liquid circulation outlet 14. The waste liquid circulation pipeline 71 is connected with a concentrated liquid discharge pipeline 8, when the waste liquid is circularly evaporated to a preset concentration, a valve on the waste liquid circulation pipeline 71 is closed, and the concentrated liquid discharge pipeline 8 is opened and discharges the concentrated waste liquid.
The first heat exchanger 2 of this embodiment is arranged in the evaporating pot 1, preferably is a coil heat exchanger, and the first heat exchanger 2 comprises a plurality of mosquito coil pipes arranged in a stacked manner and a support for supporting the mosquito coil pipes. In other embodiments, the first heat exchanger may also be another internal heat exchanger, such as a tube and tube heat exchanger; or the first heat exchanger is an external heat exchanger arranged outside the evaporating pot, such as a plate heat exchanger and the like, and can be used for heating waste liquid.
The condensing tank 3 is communicated with the steam outlet 11 through a steam pipeline, so that the steam generated in the evaporating tank 1 enters the condensing tank 3 through the steam pipeline for cooling. Similarly, the second heat exchanger is arranged inside the condensing tank 3, and is preferably a tubular heat exchange tube; in other embodiments, the second heat exchanger may also be another heat exchanger, such as a coil heat exchanger.
In the present embodiment, the heat pump system 4 includes a compressor 41, a throttle device 42, and a wind condenser 43. Preferably, the restriction 42 is an expansion valve. In other embodiments, the throttling device 42 may be other throttling structures, such as a capillary tube. The compressor 41, the first heat exchanger 2, the air condenser 43, the throttling device 42 and the second heat exchanger are connected into a loop through pipelines, and a first heat exchange medium flows through the loop.
The cooling device 5 is arranged between the compressor 41 and the first heat exchanger 2, and in the evaporation stage, the gaseous first heat exchange medium is compressed into high-temperature liquid by the compressor 41, and then enters the cooling device 5 to release part of heat, so that the temperature of the first heat exchange medium is reduced. The cooled first heat exchange medium is introduced into the first heat exchanger 2, so that the waste liquid in the evaporating pot 1 is heated. The cooling device 5 is preferably a heat exchanger, the heat exchanger is provided with a first channel for a first heat exchange medium to pass through, a second channel for a second heat exchange medium to pass through, and a partition wall located between the first channel and the second channel, and the second heat exchange medium is used for exchanging heat with the first heat exchange medium to cool the first heat exchange medium.
In this embodiment, the cooling device 5 is a plate heat exchanger, please refer to fig. 1 and fig. 2, one end of a first channel of the cooling device 5 is connected to the compressor 41 through a first heat exchange medium supply pipeline 5a, the other end is connected to the first heat exchanger 2 through a first heat exchange medium discharge pipeline 5b, one end of a second channel is connected to a second heat exchange medium supply device through a second heat exchange medium supply pipeline 5c, and the other end is discharged through a second heat exchange medium discharge pipeline 5 d.
In this embodiment, the first heat exchange medium is preferably freon, and the second heat exchange medium is water.
Referring to fig. 3 and 4, in other embodiments, the cooling device may be a heat exchanger, such as a shell-and-tube heat exchanger 5' or a coil heat exchanger 5 ″, which may be configured in other forms. Specifically, referring to fig. 3, the shell-and-tube heat exchanger 5 ' includes a shell 51 ' and a plurality of parallel tubes 52 ' (a first channel is formed in the tube 52 ') arranged in the shell 51 ', one end of the tube 52 ' is connected to the compressor 41 through a first heat exchange medium supply pipe 5a, and the other end of the tube 52 ' is connected to the first heat exchanger 2 through a first heat exchange medium discharge pipe 5 b; a gap (i.e., a second channel) is formed between the shell 51 'and the tubes 52', one end of the second channel is connected to the external water tank through the water inlet tube 5c, and the other end is discharged through the water outlet tube 5 d.
Referring to fig. 4, similarly, the coil-and-tube heat exchanger 5 "includes a housing 51" and a spiral coil 52 "disposed in the housing 51" (a first channel is formed in the spiral coil 52 "), one end of the spiral coil 52" is connected to the compressor 41 through a first heat exchange medium supply pipe 5a, and the other end of the spiral coil 52 "is connected to the first heat exchanger 2 through a first heat exchange medium discharge pipe 5 b; a gap (i.e., a second channel) is formed between the housing 51 "and the spiral coil 52", one end of the second channel is connected to the external water tank through the water inlet pipe 5c, and the other end is discharged through the water outlet pipe 5 d.
In other embodiments, the cooling device may also be an air condenser, and the first heat exchange medium may also be cooled.
After the evaporation stage, the first heat exchange medium flows out of the first heat exchanger 2, and enters the second heat exchanger after absorbing a large amount of heat through air cooling of the air condenser 43 and throttling of the expansion valve 42, so that steam is cooled. The first heat exchange medium absorbing the heat of the steam is reformed into a gaseous state and enters the compressor 41 to be recycled.
The pressure reducing device 6 is used for vacuumizing the evaporation tank 1. The pressure reducing device 6 of the embodiment comprises a centrifugal water pump and a water jet device, wherein the pump, the water jet device and the condensing tank 3 are connected into a loop through pipelines, and the water jet device is connected with a second heat exchanger and further connected with the evaporating tank 1. In other embodiments, the pressure reducing device may also select other modes according to actual needs, and is not limited herein.
In summary, in the low-temperature vacuum evaporation equipment, the cooling device is arranged between the compressor and the first heat exchanger to cool the high-temperature heat exchange medium discharged by the compressor, and then the high-temperature heat exchange medium is introduced into the first heat exchanger to heat the waste liquid, so that the situation that the local part in the evaporation tank generates higher temperature to cause the waste liquid to generate bumping, and further the water quality of evaporated water is influenced, is prevented; in addition, the temperature of the first heat exchange medium is reduced after the heat exchange action of the cooling device and the first heat exchanger, power consumption generated when the subsequent air condenser cools the heat exchange medium is reduced, the cooling effect is better, and the energy-saving effect is achieved.
Terms such as "upper," "lower," "left," "right," "front," "rear," and the like, used herein to denote relative spatial positions, are used for ease of description to describe one feature's relationship to another feature as illustrated in the figures. It will be understood that the spatially relative positional terms may be intended to encompass different orientations than those shown in the figures depending on the product presentation position and should not be construed as limiting the claims. In addition, the descriptor "horizontal" as used herein is not entirely equivalent to allowing an angular tilt along a direction perpendicular to the direction of gravity.
In addition, the above embodiments are only used for illustrating the utility model and not for limiting the technical solutions described in the utility model, and the understanding of the present specification should be based on the technical personnel in the field, and although the present specification has described the utility model in detail by referring to the above embodiments, the ordinary skilled in the art should understand that the technical personnel in the field can still make modifications or equivalent substitutions to the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.
Claims (9)
1. A low temperature vacuum evaporation apparatus, comprising:
the evaporating pot is used for evaporating the waste liquid;
the first heat exchanger is arranged inside or outside the evaporation tank and used for heating waste liquid;
the condensing tank is connected with the evaporating tank and is provided with a second heat exchanger for cooling steam generated in the evaporating tank;
the pressure reducing device is used for vacuumizing the evaporation tank;
the heat pump system comprises a compressor and a throttling device, wherein the compressor, a first heat exchanger, the throttling device and a second heat exchanger are connected into a loop through pipelines, and a first heat exchange medium flows through the loop;
the cooling device is arranged between the compressor and the first heat exchanger and used for cooling a first heat exchange medium passing through the compressor, and the first heat exchange medium is introduced into the first heat exchanger after being cooled by the cooling device.
2. The low temperature vacuum evaporation apparatus of claim 1, wherein: the cooling device is a heat exchanger, the heat exchanger is provided with a first channel for a first heat exchange medium to pass through, a second channel for a second heat exchange medium to pass through and a partition wall positioned between the first channel and the second channel, and the second heat exchange medium is used for cooling the first heat exchange medium.
3. A low temperature vacuum evaporation apparatus as claimed in claim 1, wherein: the cooling device is a plate heat exchanger, a shell-and-tube heat exchanger or a coil heat exchanger.
4. A low temperature vacuum evaporation apparatus as claimed in claim 1, wherein: the cooling device is a wind condenser.
5. A low temperature vacuum evaporation apparatus as claimed in claim 1, wherein: still include the waste liquid circulation pipeline and locate the pump on the waste liquid circulation pipeline, the evaporating pot is equipped with waste liquid circulation entry and waste liquid circulation export, and waste liquid circulation pipeline both ends are connected with waste liquid circulation entry and waste liquid circulation export respectively.
6. A low temperature vacuum evaporation apparatus as claimed in claim 5, wherein: the waste liquid circulating pipeline is connected with a concentrated liquid discharge pipeline.
7. The low-temperature vacuum evaporation device according to claim 3, wherein the first heat exchanger is arranged inside the evaporation tank, and the first heat exchanger comprises a plurality of mosquito coil pipes which are arranged in a stacked mode.
8. A cryogenic vacuum evaporation device according to claim 1, wherein the throttling means is an expansion valve.
9. The low-temperature vacuum evaporation device according to claim 1, wherein an air condenser is further arranged between the first heat exchanger and the throttling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123263569.1U CN216764370U (en) | 2021-12-23 | 2021-12-23 | Low-temperature vacuum evaporation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123263569.1U CN216764370U (en) | 2021-12-23 | 2021-12-23 | Low-temperature vacuum evaporation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216764370U true CN216764370U (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123263569.1U Active CN216764370U (en) | 2021-12-23 | 2021-12-23 | Low-temperature vacuum evaporation equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216764370U (en) |
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2021
- 2021-12-23 CN CN202123263569.1U patent/CN216764370U/en active Active
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