CN207153133U - A kind of falling film evaporator - Google Patents
A kind of falling film evaporator Download PDFInfo
- Publication number
- CN207153133U CN207153133U CN201721085827.2U CN201721085827U CN207153133U CN 207153133 U CN207153133 U CN 207153133U CN 201721085827 U CN201721085827 U CN 201721085827U CN 207153133 U CN207153133 U CN 207153133U
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- CN
- China
- Prior art keywords
- downspout
- falling film
- liquid distributor
- liquid
- film evaporator
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Abstract
The utility model discloses a kind of falling film evaporator, is related to liquid evaporation concentration technique field.By setting sealing plate, it ensure that overflow will not occur for the material in cloth sap cavity, in addition, by setting groove on the lower outer tubes wall of liquid distributor, annular space is formed between downspout and liquid distributor, the material in distribution cavity is allowd uniformly to flow into downspout along the annular space and form liquid film, so as to improve the evaporation efficiency of falling film evaporator and heat utilization rate.
Description
Technical field
It the utility model is related to liquid evaporation concentration technique field, more particularly to a kind of falling film evaporator.
Background technology
Falling film evaporation can be operated continuously under the conditions of vacuum and low temperature, have evaporability it is high, it is energy-saving, operation
Expense is low and can guarantee that material the characteristics of consistency, is widely used for medicine, food, chemical industry, light industry etc. in evaporation process
The water of industry or the evaporation and concentration of organic solvent solution, and the liquid waste processing of above industry is can be widely used for, be particularly suitable for use in heat
Quick property material.
At present, falling film evaporator is to add feed liquid self-heating room upper tube box, through liquid distribution and film formation device, is uniformly divided
It is fitted in each heat exchanger tube, under gravity and vacuum induced and airflow function, is flowed from top to bottom into uniformly membranaceous.Flow process
In, vaporized by shell side heating medium heating, caused steam enters the separation chamber of evaporator with liquid phase jointly, and vapour-liquid is through fully dividing
From steam enters condenser condensation (single-action operation) or enters lower 1st effective evaporator as heating medium, so as to realize that multiple-effect is grasped
Make, liquid phase is then discharged by separation chamber.
But cloth liquid in above-mentioned falling film evaporator and into membrane structure so that the liquid film into heat exchanger tube is uneven, so as to
Reduce evaporation efficiency and heat utilization rate.
Utility model content
The purpose of this utility model is to provide a kind of falling film evaporator, so as to solve foregoing present in prior art ask
Topic.
To achieve these goals, the technical solution adopted in the utility model is as follows：
A kind of falling film evaporator, includes successively from top to bottom：Sealing plate, liquid distributor, upper perforated plate and downspout, the sealing
Cavity between plate and the upper perforated plate is cloth sap cavity, and the top of the liquid distributor is fixed on the sealing plate, the cloth liquid
Set fluted on the lower outer tubes wall of pipe, the outer wall of the concave part of the liquid distributor is close to the inwall insertion institute of the downspout
State in downspout, and the upper end of the groove is located at the top of the downspout upper port, the top of the downspout is fixed on
On the upper perforated plate.
Preferably, the groove set on the lower outer tubes wall of the liquid distributor is spiral groove.
Preferably, the upper weld of the liquid distributor is fixed on the sealing plate.
Preferably, the upper weld of the downspout is fixed on the upper perforated plate.
The beneficial effects of the utility model are：The falling film evaporator that the utility model embodiment provides, sealed by setting
Plate, it ensure that overflow will not occur for the material in cloth sap cavity, in addition, by setting groove on the lower outer tubes wall of liquid distributor,
Annular space is formed between downspout and liquid distributor so that the material in distribution cavity can uniformly flow into downspout simultaneously along the annular space
Liquid film is formed, so as to improve the evaporation efficiency of falling film evaporator and heat utilization rate.
Brief description of the drawings
Fig. 1 is the structural representation for the falling film evaporator that the utility model embodiment provides；
Fig. 2 is liquid distributor concave part structural representation.
In figure, the implication of each symbol is as follows：
1 downspout, 2 grooves, 3 liquid distributors, 4 sealing plates, 5 inlets, 6 cloth sap cavities, 7 upper perforated plates.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing, to this reality
It is further elaborated with new.It should be appreciated that embodiment described herein is only explaining this practicality
It is new, it is not used to limit the utility model.
As shown in Figure 1-2, the utility model embodiment provides a kind of falling film evaporator, includes successively from top to bottom：It is close
Shrouding 4, liquid distributor 3, upper perforated plate 7 and downspout 1, the cavity between sealing plate 4 and upper perforated plate 7 are cloth sap cavity 6, liquid distributor 3
Top is fixed on sealing plate 4, fluted 2 is set on the lower outer tubes wall of liquid distributor 3, the outer wall of the concave part of liquid distributor 3 is tight
In the inwall insertion downspout 1 for pasting downspout 1, and the upper end of groove 2 is located at the top of the upper port of downspout 1, downspout 1 it is upper
Portion is fixed on upper perforated plate 7.
The operation principle of said structure is：
Material need to be handled by material inlet to be entered in cloth sap cavity, and certain liquid level is formed in cloth sap cavity, pass through liquid distributor
The annular space that groove between downspout is formed enters downspout, and is flowed downward along the tube wall of downspout, along tube wall to
During lower flowing, descending liquid film is formed, by carrying out heat exchange with the thermal medium for walking shell side, realizes evaporation, evaporation produces
Steam by liquid distributor ejection mouth draw.
It can be seen that the falling film evaporator that the present embodiment provides, by setting sealing plate, ensure that the material in cloth sap cavity will not
Generation overflow, in addition, by setting groove on the lower outer tubes wall of liquid distributor, ring is formed between downspout and liquid distributor
Gap so that the material in distribution cavity can uniformly flow into downspout along the annular space and form liquid film, so as to improve falling film evaporation
The evaporation efficiency and heat utilization rate of device.
In a preferred embodiment of the present utility model, the groove 2 set on the lower outer tubes wall of liquid distributor 3 is spiral
Connected in star.
It using spiral groove, can both cause material to enter downspout along groove annular space, and can cause to enter descending liquid again
The material of pipe forms more uniform liquid film so that faster, the evaporation rate of evaporator is higher, heat utilization for the evaporation rate of liquid film
Rate is higher.
In the present embodiment, the upper weld of liquid distributor 3 is fixed on sealing plate 4.
The upper weld of downspout 1 is fixed on upper perforated plate 7.
By the way of being welded and fixed, it can make it that connection is more firm, be not easily susceptible to the influence of extraneous factor.
By using above-mentioned technical proposal disclosed in the utility model, following beneficial effect has been obtained：The utility model
The falling film evaporator that embodiment provides, by setting sealing plate, ensure that overflow will not occur for the material in cloth sap cavity, in addition,
By setting groove on the lower outer tubes wall of liquid distributor, annular space is formed between downspout and liquid distributor so that in distribution cavity
Material can uniformly flow into downspout along the annular space and form liquid film, so as to improve the evaporation efficiency of falling film evaporator and heat
Can utilization rate.
Described above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching should also regard the scope of protection of the utility model.
Claims (4)
1. a kind of falling film evaporator, it is characterised in that include successively from top to bottom：Sealing plate, liquid distributor, upper perforated plate and descending liquid
Pipe, the cavity between the sealing plate and the upper perforated plate is cloth sap cavity, and the top of the liquid distributor is fixed on the sealing plate
On, set fluted on the lower outer tubes wall of the liquid distributor, the outer wall of the concave part of the liquid distributor is close to the downspout
Inwall insert in the downspout, and the upper end of the groove is located at the top of the downspout upper port, the downspout
Top be fixed on the upper perforated plate.
2. falling film evaporator according to claim 1, it is characterised in that set on the lower outer tubes wall of the liquid distributor
Groove is spiral groove.
3. falling film evaporator according to claim 1, it is characterised in that the upper weld of the liquid distributor is fixed on described
On sealing plate.
4. falling film evaporator according to claim 1, it is characterised in that the upper weld of the downspout is fixed on described
On upper perforated plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085827.2U CN207153133U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085827.2U CN207153133U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207153133U true CN207153133U (en) | 2018-03-30 |
Family
ID=61718476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721085827.2U Active CN207153133U (en) | 2017-08-28 | 2017-08-28 | A kind of falling film evaporator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207153133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639461A (en) * | 2018-06-26 | 2020-01-03 | 浙江理工大学 | Falling film devolatilizer and falling film element thereof |
-
2017
- 2017-08-28 CN CN201721085827.2U patent/CN207153133U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110639461A (en) * | 2018-06-26 | 2020-01-03 | 浙江理工大学 | Falling film devolatilizer and falling film element thereof |
| CN110639461B (en) * | 2018-06-26 | 2024-04-09 | 浙江理工大学 | Falling film devolatilizer and falling film element thereof |
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