CN210229187U - Disc vacuum type evaporation crystallizer - Google Patents
Disc vacuum type evaporation crystallizer Download PDFInfo
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- CN210229187U CN210229187U CN201920828591.XU CN201920828591U CN210229187U CN 210229187 U CN210229187 U CN 210229187U CN 201920828591 U CN201920828591 U CN 201920828591U CN 210229187 U CN210229187 U CN 210229187U
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Abstract
The utility model relates to a disk vacuum type evaporative crystallizer, which comprises a shell and a rotating shaft with a horizontally arranged axis, wherein concentrated liquid can be introduced into the inner cavity of the shell; one end of the rotating shaft extends into the inner cavity of the shell, and the other end of the rotating shaft is arranged outside the shell and is driven by the driving device to rotate; the rotating shaft comprises a first cylinder and a second cylinder sleeved outside the first cylinder, the first cylinder is fixedly connected with the second cylinder, and one end of the first cylinder, which extends into the inner cavity of the shell, of the second cylinder is closed; a steam pipeline is formed in the inner cavity of the first cylinder, a condensed water pipeline is formed in the second cylinder, or the condensed water pipeline is formed in the first cylinder, and the steam pipeline is formed in the second cylinder; the outer surface cover of pivot is equipped with a plurality of heating discs, the axis direction of heating disc along the pivot is arranged in proper order. The utility model discloses can simplify traditional evaporative crystallization system structure, make efficiency show the improvement, can realize the crystallization of concentrate in an equipment.
Description
Technical Field
The utility model belongs to the technical field of waste water treatment clarification plant, concretely relates to disc vacuum type evaporative crystallizer.
Background
The traditional evaporative crystallizer consists of an evaporator, a heat exchanger and a forced circulation pump. The temperature of the material is increased in the heat exchange tube of the heat exchanger by the steam outside the heat exchange tube. The material rises into the evaporative crystallizer under the action of the circulating pump, and the material is evaporated in the evaporative crystallizer due to the reduction of the static pressure of the material. The secondary steam generated by evaporation overflows from the material, the material is concentrated to generate supersaturation, the supersaturated solution descends in the central tube of the evaporation crystallizer to fully contact with small crystals in the solution to further grow the crystals, and the grown crystals are elutriated by an elutriation column to precipitate large crystals below the elutriation column and are conveyed to a thickener by a crystal slurry pump. Smaller crystals continue to grow in the crystallizer. The clarified liquid is conveyed to a heat exchanger by a forced circulation pump to be heated continuously, and the materials are circulated in such a way to be evaporated, concentrated or crystallized continuously.
The inventor thinks that the existing evaporative crystallizer has complex structure, more system equipment components, large occupied area and high energy consumption.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies of the prior art, providing a disc vacuum type evaporative crystallizer, can simplify traditional evaporative crystallization system structure, make efficiency show and improve, can realize the crystallization of concentrate in an equipment.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a disc vacuum type evaporative crystallizer comprises a shell and a rotating shaft with a horizontal axis, wherein a concentrated solution can be introduced into an inner cavity of the shell;
one end of the rotating shaft extends into the inner cavity of the shell, and the other end of the rotating shaft is arranged outside the shell and is driven by the driving device to rotate;
the rotating shaft comprises a first cylinder and a second cylinder sleeved outside the first cylinder, the first cylinder is fixedly connected with the second cylinder, and one end of the first cylinder, which extends into the inner cavity of the shell, of the second cylinder is closed;
the inner cavity of the first cylinder forms a steam pipeline, and a space between the first cylinder and the second cylinder forms a condensed water pipeline, or the inner cavity of the first cylinder forms a condensed water pipeline and a space between the first cylinder and the second cylinder forms a steam pipeline.
The surface cover of pivot is equipped with a plurality of heating discs, the axis direction of heating disc along the pivot arranges in proper order, and every heating disc comprises a plurality of sectors, and every sector communicates with steam conduit and condensate water pipeline respectively.
The heating disc structure is adopted, the heating disc can rotate along with the rotating shaft to realize intermittent contact of the crystallization cloth and the concentrated solution in the inner cavity of the shell, and crystallization of the concentrated solution in the crystallization cloth, scraping and recovery of crystals are realized; the circulation treatment of concentrated solution crystallization and recovery can be realized, and the work efficiency is increased.
One side of each heating disc is provided with a scraper, the outside of each heating disc is coated with crystal cloth, the crystal cloth is in contact with the scraper, the lower part of the scraper is connected with a discharging hopper, and the bottom of the discharging hopper penetrates through the shell.
And by adopting the crystallizing cloth, a part of concentrated solution can be taken away from the liquid level of the concentrated solution by the heating disc, so that the concentrated solution is further evaporated and crystallized, and the scraping of crystals is completed.
Furthermore, a gas collecting device is arranged at the top of the shell and used for collecting steam in the inner cavity of the shell.
The gas collecting device is adopted to collect the steam generated by heating in the inner cavity of the shell, and the collected steam can be reused, so that the waste of resources is avoided.
Further, the one end that the pivot is located the casing outside is equipped with steam inlet and comdenstion water export, steam inlet and steam conduit intercommunication, comdenstion water export and condensate water pipeline intercommunication.
Further, the steam inlet is communicated with an outlet of the compressor, an inlet of the compressor is communicated with the steam generating device, and the condensed water outlet is communicated with the condensed water storage device.
Further, the gas collecting device is communicated with an inlet of the compressor.
The mode that the gas collecting device is matched with the compressor for use is adopted, the compressor can be used for extracting steam in the inner cavity of the shell, the inner cavity of the shell forms a negative pressure working condition, the inner cavity of the shell is approximate to vacuum, and steam generated by heating concentrated solution is re-put into a steam pipeline and a heating disc through the compressor to serve as heating steam of equipment, so that heat energy circulation and continuous evaporation are realized. Meanwhile, the problem of concentrated solution evaporation can be reduced due to the reduction of gas pressure in the inner cavity of the shell.
The utility model has the advantages that:
1) adopt heating disc structure: the heating disc can rotate along with the rotating shaft to realize intermittent contact of the crystallization cloth and the concentrated solution in the inner cavity of the shell, so that crystallization of the concentrated solution in the crystallization cloth, scraping and recovery of crystals are realized; the circulation treatment of concentrated solution crystallization and recovery can be realized, and the work efficiency is increased.
2) The method of coating the outside of the heating disc with the crystallized cloth is adopted: the crystallizing cloth is used as a carrier for crystallizing the concentrated solution, so that a part of the concentrated solution can be taken away from the liquid level of the concentrated solution by the heating disc, the concentrated solution is further evaporated and crystallized, and the scraping of crystals is completed.
4) Because the working condition of negative pressure is adopted in the inner cavity of the shell, the consumption of steam can be reduced, the evaporation temperature is low, secondary steam generated by concentrated solution can be sucked into the heating disc through the compressor, the heat is fully utilized, the feed liquid is heated mildly, and the device is suitable for concentrated crystallization of thermosensitive materials
5) The rotating shaft is adopted to drive the heating disc to rotate, the automation degree is high, the blanking, the evaporation, the crystallization and the unloading are all continuous automation, the production efficiency is improved, the operation cost is reduced, the labor intensity of workers is greatly reduced, and the working environment is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a left side view of the overall structure in the embodiment of the present invention;
fig. 2 is a front view of the overall structure in the embodiment of the present invention.
In the figure: 1. feeding a hopper; 2. a squeegee; 3. heating the disc; 4. crystallizing cloth; 5. a condensed water outlet pipe; 6. a steam inlet pipe; 7. a gas collection device; 7A, a gas collecting pipe; 7B, a communicating pipe; 8. a steam inlet; 9. a rotating shaft; 10. a condensed water outlet; 11. a concentrated solution inlet; 12. a housing; 13. a crystallized cloth outlet; 14. a first cylinder; 15. a second cylinder.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up, down, left, right" in the present invention, if appearing, are intended to correspond only to the upper, lower, left, right directions of the drawings themselves, not to limit the structure, but merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
In a typical embodiment of the present invention, as shown in fig. 1-2, a disc vacuum type evaporative crystallizer comprises a housing 12 and a rotating shaft 9 with a horizontal axis, wherein the inner cavity of the housing 12 can be filled with a concentrated solution.
One end of the rotating shaft 9 extends into the inner cavity of the shell 12, and the other end of the rotating shaft is arranged outside the shell 12 and driven by a driving device to rotate.
The rotating shaft 9 comprises a first cylinder 14 and a second cylinder 15 sleeved outside the first cylinder 14, the first cylinder 14 is fixedly connected with the second cylinder 15, and one ends of the first cylinder 14 and the second cylinder 15 extending into the inner cavity of the shell 12 are closed. The one end that pivot 9 is located the casing 12 outside is equipped with steam inlet 8 and comdenstion water export 10, steam inlet 8 and steam conduit intercommunication, comdenstion water export 10 and comdenstion water pipeline intercommunication.
Specifically, in order to realize the synchronous rotation of the first cylinder 14 and the second cylinder 15, the first cylinder 14 should be fixedly connected with the second cylinder 15, in some embodiments, one end of the first cylinder 14 and one end of the second cylinder 15, which extend into the inner cavity of the housing, are closed by a first baffle, and the first baffle is fixed with the end faces of the first cylinder 14 and the second cylinder 15; the ends of the first baffle and the second baffle, which are positioned outside the inner cavity of the shell, are sealed by the second baffle, the second baffle is respectively fixed with the end surfaces of the first cylinder 14 and the second cylinder 15, and the second baffle is provided with a condensed water outlet 10 and a steam inlet 8.
The inner cavity of the first cylinder 14 forms a steam pipeline, and the space between the first cylinder 14 and the second cylinder 15 forms a condensed water pipeline, or the inner cavity of the first cylinder 14 forms a condensed water pipeline and the space between the first cylinder 14 and the second cylinder 15 forms a steam pipeline.
Specifically, the first cylinder 14 and the second cylinder 15 are used for separately conveying steam and condensed water, and the positions of the steam pipeline and the condensed water pipeline can be interchanged.
The surface cover of pivot 9 is equipped with a plurality of heating disc 3, heating disc 3 arranges in proper order along the axis direction of pivot 9, and every heating disc 3 comprises a plurality of sectors, and every sector communicates with steam conduit and condensate water pipeline respectively.
In some embodiments, each heating disk 3 may be formed by assembling a plurality of sectors, each of which is manufactured independently. In other embodiments, each heating disk 3 is integrally formed, and the heating disk 3 has a plurality of partitions therein, which partition the heating disk 3 into a plurality of sectors isolated from each other.
One side of every heating disc 3 is equipped with scraper blade 2, the outside cladding of heating disc 3 has crystallization cloth 4, crystallization cloth 4 and scraper blade 2 contact, the lower part and the lower hopper 1 of scraper blade 2 are connected, the bottom of lower hopper 1 runs through casing 12. The bottom of casing 12 is equipped with concentrate import 11, the bottom of casing 12 is equipped with crystallization cloth export 13, crystallization cloth export 13 is run through to the bottom of hopper 1 down.
Specifically, the bottom of the discharging hopper 1 should be fixedly connected with the shell 12 when penetrating through the crystallized cloth outlet 13, so that the fixing of the discharging hopper 1 in the inner cavity of the shell 12 is realized, and the fixing of the scraper 2 is further realized. In order to ensure the effect of scraping the crystal particles by the scraper 2, the scraper 2 should form a certain included angle with the heating disc 3.
Specifically, the scraper blade adopts conventional plate, with the one end of scraper blade and crystallization cloth contact, when crystallization cloth along with heating disc rotation, can make the crystal body be scraped by the scraper blade, the length of scraper blade should be the same with the generating line length of every sector in the heating disc.
One end of each sector, which is close to the rotating shaft 9, is provided with a steam inlet pipe 6 and a condensate outlet pipe 5 respectively, wherein the steam inlet pipe 6 is communicated with a steam pipeline, and the condensate outlet pipe 5 is communicated with a condensate pipeline.
The driving device is a motor, a first transmission gear is sleeved at one end, located outside the shell 12, of the rotating shaft 9, the motor is connected with the speed reducer, a second transmission gear is installed on an output shaft of the speed reducer, and the first transmission gear is meshed with the second transmission gear.
In other embodiments, a belt wheel may be sleeved on an end of the rotating shaft 9 located outside the housing 12, and a belt wheel is also sleeved on an output shaft of the speed reducer, and the two belt wheels are linked by a belt.
The inner cavity of the shell 12 above the scraper 2 forms a discharging area, and the inner cavity of the shell 12 below the scraper 2 forms a concentrated solution area
The steam inlet 8 is communicated with an outlet of the compressor, an inlet of the compressor is communicated with the steam generating device, and the condensed water outlet 10 is communicated with the condensed water storage device.
The top of the shell 12 is provided with a gas collecting device 7, and the gas collecting device 7 is used for collecting steam in the inner cavity of the shell 12. The gas collecting device 7 is communicated with the inlet of the compressor. The gas collecting device 7 comprises a gas collecting pipe 7A, a plurality of air holes are formed in the surface of the gas collecting pipe 7A, a communicating pipe 7B is arranged in the middle of the gas collecting pipe 7A, and the communicating pipe 7B is communicated with an inlet of the compressor.
The working principle is as follows: during the start-up phase of the apparatus it is necessary to add concentrate to the housing 12 through the concentrate inlet 11, when the concentrated solution reaches the designated liquid level, the heating disc 3 is driven by the rotating shaft 9 to rotate at a certain rotating speed, heating steam is introduced into the heating disc 3 through the steam inlet pipe 6, when a sector of the heating disc 3 is positioned in a lower layer concentration area, the heating disc 3 crystallizes the concentrated solution on the crystallizing cloth 4 on the surface of the disc through the steam heating action and forms crystals, when this heating disc 3 is detached from the concentrate level and brought into a position above where there is no concentrate, the crystals are continuously heated on the surface of the heating disc 3, water is continuously separated from the crystals, the crystals are dried, steam generated twice is recovered from the steam collecting device at the top and enters the compressor, and the heating steam in the heating disc 3 is discharged through the condensed water outlet 10 after heat exchange is finished. After entering the discharge area, the crystals are scraped off the heating disk 3 by the scraper 2 and discharged by dropping into the hopper 1.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A disk vacuum type evaporative crystallizer is characterized by comprising a shell and a rotating shaft with a horizontal axis, wherein concentrated liquid can be introduced into an inner cavity of the shell;
one end of the rotating shaft extends into the inner cavity of the shell, and the other end of the rotating shaft is arranged outside the shell and is driven by the driving device to rotate;
the rotating shaft comprises a first cylinder and a second cylinder sleeved outside the first cylinder, the first cylinder is fixedly connected with the second cylinder, and one end of the first cylinder, which extends into the inner cavity of the shell, of the second cylinder is closed;
the inner cavity of the first cylinder forms a steam pipeline, and a space between the first cylinder and the second cylinder forms a condensed water pipeline, or the inner cavity of the first cylinder forms a condensed water pipeline and a space between the first cylinder and the second cylinder forms a steam pipeline;
the outer surface of the rotating shaft is sleeved with a plurality of heating disks, the heating disks are sequentially arranged along the axis direction of the rotating shaft, each heating disk is composed of a plurality of sectors, and each sector is respectively communicated with the steam pipeline and the condensed water pipeline;
one side of each heating disc is provided with a scraper, the outside of each heating disc is coated with crystal cloth, the crystal cloth is in contact with the scraper, the lower part of the scraper is connected with a discharging hopper, and the bottom of the discharging hopper penetrates through the shell.
2. The disc vacuum evaporative crystallizer of claim 1, wherein each sector is provided with a steam inlet pipe and a condensed water outlet pipe at one end close to the rotating shaft, the steam inlet pipe is communicated with a steam pipeline, and the condensed water outlet pipe is communicated with a condensed water pipeline.
3. The disc vacuum type evaporative crystallizer of claim 1, wherein the driving device is a motor, one end of the rotating shaft located outside the shell is sleeved with a first transmission gear, the motor is connected with a speed reducer, an output shaft of the speed reducer is provided with a second transmission gear, and the first transmission gear is meshed with the second transmission gear.
4. The disc vacuum evaporative crystallizer of claim 1, wherein the internal cavity of the housing above the scraper forms a discharge zone and the internal cavity of the housing below the scraper forms a concentrate zone.
5. The disc vacuum evaporative crystallizer of claim 1, wherein a gas collection device is provided at the top of the housing for collecting vapor in the internal cavity of the housing.
6. The disk vacuum type evaporative crystallizer of claim 1, wherein the bottom of the shell is provided with a concentrated solution inlet, the bottom end of the shell is provided with a crystallization cloth outlet, and the bottom end of the blanking hopper penetrates through the crystallization cloth outlet.
7. The disc vacuum evaporative crystallizer of claim 5, wherein the end of the rotating shaft located outside the shell is provided with a steam inlet and a condensed water outlet, the steam inlet is communicated with a steam pipeline, and the condensed water outlet is communicated with a condensed water pipeline.
8. The disc vacuum evaporative crystallizer of claim 7, wherein the vapor inlet communicates with an outlet of a compressor, the inlet of the compressor communicates with a vapor generating device, and the condensate outlet communicates with a condensate storage device.
9. The disc vacuum evaporative crystallizer of claim 8, wherein the gas collection device is in communication with an inlet of a compressor.
10. The disc vacuum evaporative crystallizer of claim 9, wherein the gas collecting device comprises a gas collecting pipe, the surface of the gas collecting pipe is provided with a plurality of gas holes, the middle part of the gas collecting pipe is provided with a communicating pipe, and the communicating pipe is communicated with the inlet of the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828591.XU CN210229187U (en) | 2019-06-03 | 2019-06-03 | Disc vacuum type evaporation crystallizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920828591.XU CN210229187U (en) | 2019-06-03 | 2019-06-03 | Disc vacuum type evaporation crystallizer |
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| CN210229187U true CN210229187U (en) | 2020-04-03 |
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| CN201920828591.XU Active CN210229187U (en) | 2019-06-03 | 2019-06-03 | Disc vacuum type evaporation crystallizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262512A (en) * | 2021-07-06 | 2021-08-17 | 山东意威尔环境科技有限公司 | Disc type film distribution evaporator |
| CN117298800A (en) * | 2023-11-27 | 2023-12-29 | 山西亚鑫新能科技有限公司 | VOCs collection and waste gas comprehensive treatment system and method |
-
2019
- 2019-06-03 CN CN201920828591.XU patent/CN210229187U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113262512A (en) * | 2021-07-06 | 2021-08-17 | 山东意威尔环境科技有限公司 | Disc type film distribution evaporator |
| CN117298800A (en) * | 2023-11-27 | 2023-12-29 | 山西亚鑫新能科技有限公司 | VOCs collection and waste gas comprehensive treatment system and method |
| CN117298800B (en) * | 2023-11-27 | 2024-02-06 | 山西亚鑫新能科技有限公司 | VOCs collection and waste gas comprehensive treatment system and method |
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Address after: 250002 Science Park 0203, National University of Shandong University, 54 Ma'anshan Road, Shizhong District, Jinan City, Shandong Province Patentee after: Shandong Xianghuan Environmental Technology Co.,Ltd. Address before: 250002 Science Park 0203, National University of Shandong University, 54 Ma'anshan Road, Shizhong District, Jinan City, Shandong Province Patentee before: SHANDONG XIANGHENG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. |
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