CN211215460U - Vacuum type internal circulation evaporator - Google Patents
Vacuum type internal circulation evaporator Download PDFInfo
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- CN211215460U CN211215460U CN201921775276.1U CN201921775276U CN211215460U CN 211215460 U CN211215460 U CN 211215460U CN 201921775276 U CN201921775276 U CN 201921775276U CN 211215460 U CN211215460 U CN 211215460U
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Abstract
The utility model discloses a vacuum type internal circulation evaporator, which relates to the field of circulation evaporators and comprises a shell, wherein the inner cavity of the shell is sequentially divided into an evaporation chamber, a heating chamber and a concentrated solution collecting chamber from top to bottom through a partition plate; a central circulating pipe and a heating pipe bundle arranged around the central circulating pipe are arranged in the heating chamber, a supporting seat is arranged in the center of the bottom of the concentrated solution collecting chamber, a main shaft is arranged in the central circulating pipe along the central axis, one end of the main shaft extends upwards to penetrate through the evaporation chamber and then penetrates out of the top of the shell and is connected with a motor above the shell, the other end of the main shaft extends downwards to the concentrated solution collecting chamber and is inserted into the supporting seat, and the main shaft is respectively and rotatably connected with the; the main shaft is respectively provided with a spiral impeller and a stirring blade, the spiral impeller is positioned in the central circulating pipe, and the stirring blade is positioned in the concentrated solution collecting chamber; the top of the evaporation chamber is also provided with a vacuum port, and the vacuum port is connected with a pump for vacuumizing. The utility model discloses simple structure, can show improvement evaporation efficiency and evaporation effect.
Description
Technical Field
The utility model relates to a circulation evaporator field especially relates to a vacuum type inner loop evaporator.
Background
The internal circulation evaporator is one of solution evaporators, is developed from horizontal heating chambers, coil heating chambers and other evaporators, and has the advantages of good solution circulation, high heat transfer efficiency and the like.
The working principle is that the solution makes continuous circulation movement in the evaporator to improve the heat transfer effect and alleviate the scaling condition of the solution. The circulation motion can be divided into natural circulation and forced circulation due to different reasons, wherein the natural circulation is circulation motion caused by density difference generated by different heating degrees of the solution at different positions of the heating chamber, and the natural circulation is common in the market.
However, in practical production, due to the structural limitation, the natural circulation speed is generally below 0.4-0.5m/s, the flow rate is low, and the solution in the heating pipe is always close to the concentration of the finished solution due to the continuous circulation of the solution, so that the viscosity of the solution is increased, and the boiling point is increased. As is known to all, the solution viscosity and the boiling point rise value of different physical properties are different, the solution stays in the tube array for a long time after the viscosity of the solution is increased, and the tube array wall is easy to scale, so that the heat transfer efficiency is influenced, and the natural circulation is not suitable for the solution with high viscosity and high boiling point under the condition. In addition, the evaporation effect and the evaporation efficiency of the natural circulation or the forced circulation can not meet the high efficiency requirement of the modern industry all the time.
Disclosure of Invention
An object of the utility model is to overcome the not enough of above-mentioned technique, provide a simple structure, can show the vacuum type inner loop evaporimeter that improves evaporation efficiency and evaporation effect.
In order to realize the purpose of the utility model, the utility model adopts the technical scheme that: a vacuum type internal circulation evaporator comprises a shell, wherein an inner cavity of the shell is sequentially divided into an evaporation chamber, a heating chamber and a concentrated solution collecting chamber from top to bottom through a partition plate; the top of the evaporation chamber is provided with a solution inlet and a steam outlet; the heating chamber is internally provided with a central circulating pipe and a heating pipe bundle arranged around the central circulating pipe, the central circulating pipe and the shell are positioned on the same central axis, the heating pipe bundle is parallel to the central axis of the shell, the central circulating pipe and the heating pipe bundle are communicated with the evaporation chamber and the concentrated solution collecting chamber through holes formed in an upper partition plate and a lower partition plate of the heating chamber, and the side wall of the heating chamber is provided with a heating medium inlet and a heating medium outlet; the concentrated solution collecting chamber is characterized in that a supporting seat is arranged in the center of the bottom of the concentrated solution collecting chamber, a main shaft is arranged in the central circulating pipe along the central axis, one end of the main shaft extends upwards to penetrate through the evaporation chamber and then penetrates out of the top of the shell and is connected with a motor above the shell, the other end of the main shaft extends downwards to the concentrated solution collecting chamber and is inserted into the supporting seat, and the main shaft is respectively and rotatably connected with the shell and the supporting seat; the main shaft is respectively provided with a spiral impeller and a stirring blade, the spiral impeller is positioned in the central circulating pipe, and the stirring blade is positioned in the concentrated solution collecting chamber; the top of the evaporation chamber is also provided with a vacuum port, and the vacuum port is connected with a pump for vacuumizing.
Further, the stirring paddle is an L-shaped stirring paddle bent downwards.
Further, the helical impeller is disposed at a lower portion of the central circulation tube.
Further, the motor is a speed regulating motor.
Further, a support frame is installed outside the shell and used for supporting the whole shell.
The utility model has the advantages that:
1. for the solution with high viscosity and high boiling point, the screw blade pushes the solution in the central circulating pipe to move downwards and circularly flow upwards from the surrounding heating pipe bundle, so that the circulating speed of the solution is accelerated, the solution is prevented from forming scale on the inner walls of the central circulating pipe and the heating pipe bundle and even changing the property of the solution, the cost is reduced, and the device is suitable for concentration of the solutions with various viscosities and boiling points.
2. Through setting up the supporting seat, can prevent that the main shaft from rocking, also can prevent that the main shaft from breaking away from with the motor because of the action of gravity, falling downwards.
3. Through setting up the vacuum mouth, to the evacuation of evaporimeter inner chamber before the material is handled, one reduced the inside air of device, the rising of the steam that the convenient evaporation produced, two come under vacuum environment, can reduce the boiling point of solution, improved evaporation effect and evaporation rate, improved work efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a shell 1, a partition plate 2, an evaporation chamber 3, a heating chamber 4, a concentrated solution collecting chamber 5, a solution inlet 6, a steam outlet 7, a central circulating pipe 8, a heating pipe bundle 9, a through hole 10, a heating medium inlet 11, a heating medium outlet 12, a concentrated solution outlet 13, a supporting seat 14, a main shaft 15, a motor 16, a spiral impeller 17, stirring blades 18, a vacuum port 19 and a supporting frame 20.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1, a vacuum type internal circulation evaporator comprises a shell 1, wherein an inner cavity of the shell 1 is sequentially divided into an evaporation chamber 3, a heating chamber 4 and a concentrated solution collecting chamber 5 from top to bottom through a partition plate 2; the top of the evaporation chamber 3 is provided with a solution inlet 6 and a steam outlet 7; a central circulating pipe 8 and a heating pipe bundle 9 arranged around the central circulating pipe 8 are arranged in the heating chamber 4, the central circulating pipe 8 and the shell 1 are positioned on the same central axis, the heating pipe bundle 9 is parallel to the central axis of the shell 1, the central circulating pipe 8 and the heating pipe bundle 9 are communicated with the evaporation chamber 3 and the concentrated solution collection chamber 5 through holes 10 formed in an upper partition plate 2 and a lower partition plate 2 of the heating chamber 4, and a heating medium inlet 11 and a heating medium outlet 12 are formed in the side wall of the heating chamber 4; a concentrated solution outlet 13 is formed in the bottom of the concentrated solution collecting chamber 5, a supporting seat 14 is installed in the center of the bottom of the concentrated solution collecting chamber 5, a main shaft 15 is arranged in the central circulating pipe 8 along the central axis, one end of the main shaft 15 extends upwards to penetrate through the evaporation chamber 3 and then penetrates out of the top of the shell 1 and is connected with a motor 16 above the shell 1, the motor 16 is a speed regulating motor, the other end of the main shaft 15 extends downwards to the concentrated solution collecting chamber 5 and is inserted into the supporting seat 14, and the main shaft 15 is rotatably connected with the shell; a helical impeller 17 and a stirring blade 18 are respectively arranged on the main shaft 15, the stirring blade 18 is an L-shaped stirring blade 18 bent downwards, the helical impeller 17 is positioned in the central circulating pipe 8, the helical impeller 17 is arranged at the lower part of the central circulating pipe 8, and the stirring blade 18 is positioned in the concentrated solution collecting chamber 5; the top of the evaporation chamber 3 is also provided with a vacuum port 19, and the vacuum port 19 is connected with a pump for vacuumizing; a support frame 20 is installed outside the housing 1 for supporting the entire housing 1.
When the device works, an inner cavity of a shell 1 is firstly pumped into a vacuum state through a vacuum port 19, then a solution enters an evaporation chamber 3, a heating chamber 4 and a concentrated solution collecting chamber 5 from a solution inlet 6 in sequence, a motor 16 is started, a spiral impeller 17 pushes the solution in a central circulation pipe 8 to move downwards and then circularly flows upwards from a surrounding heating pipe bundle 9, and stirring blades 18 uniformly mix the concentration of the solution in the concentrated solution collecting chamber 5; in the course of repeated cyclic evaporation, the solution is continuously concentrated, and finally the concentrated solution flows out from the concentrated solution outlet 13.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (5)
1. A vacuum type internal circulation evaporator comprises a shell, wherein an inner cavity of the shell is sequentially divided into an evaporation chamber, a heating chamber and a concentrated solution collecting chamber from top to bottom through a partition plate; the top of the evaporation chamber is provided with a solution inlet and a steam outlet; the heating chamber is internally provided with a central circulating pipe and a heating pipe bundle arranged around the central circulating pipe, the central circulating pipe and the shell are positioned on the same central axis, the heating pipe bundle is parallel to the central axis of the shell, the central circulating pipe and the heating pipe bundle are communicated with the evaporation chamber and the concentrated solution collecting chamber through holes formed in an upper partition plate and a lower partition plate of the heating chamber, and the side wall of the heating chamber is provided with a heating medium inlet and a heating medium outlet; the concentrated solution collecting chamber is characterized in that a supporting seat is arranged in the center of the bottom of the concentrated solution collecting chamber, a main shaft is arranged in the central circulating pipe along the central axis, one end of the main shaft extends upwards to penetrate through the evaporation chamber and then penetrates out of the top of the shell and is connected with a motor above the shell, the other end of the main shaft extends downwards to the concentrated solution collecting chamber and is inserted into the supporting seat, and the main shaft is respectively and rotatably connected with the shell and the supporting seat; the main shaft is respectively provided with a spiral impeller and a stirring blade, the spiral impeller is positioned in the central circulating pipe, and the stirring blade is positioned in the concentrated solution collecting chamber; the top of the evaporation chamber is also provided with a vacuum port, and the vacuum port is connected with a pump for vacuumizing.
2. The vacuum-type internal circulation evaporator according to claim 1, wherein the stirring blade is an L-shaped stirring blade bent downward.
3. The vacuum-type internal circulation evaporator according to claim 1, wherein the helical impeller is provided at a lower portion of the central circulation tube.
4. The vacuum-type internal circulation evaporator as recited in claim 1, wherein said motor is a variable speed motor.
5. The evacuated internal circulation evaporator according to claim 1, wherein a support frame is mounted outside the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921775276.1U CN211215460U (en) | 2019-10-22 | 2019-10-22 | Vacuum type internal circulation evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921775276.1U CN211215460U (en) | 2019-10-22 | 2019-10-22 | Vacuum type internal circulation evaporator |
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| Publication Number | Publication Date |
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| CN211215460U true CN211215460U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921775276.1U Active CN211215460U (en) | 2019-10-22 | 2019-10-22 | Vacuum type internal circulation evaporator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870743A (en) * | 2021-02-03 | 2021-06-01 | 陈敏 | Central circulation tubular evaporator for chemical industry production |
-
2019
- 2019-10-22 CN CN201921775276.1U patent/CN211215460U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870743A (en) * | 2021-02-03 | 2021-06-01 | 陈敏 | Central circulation tubular evaporator for chemical industry production |
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