CN212757264U - Falling film evaporation overflow type pipe orifice film distributor - Google Patents
Falling film evaporation overflow type pipe orifice film distributor Download PDFInfo
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- CN212757264U CN212757264U CN202021402093.8U CN202021402093U CN212757264U CN 212757264 U CN212757264 U CN 212757264U CN 202021402093 U CN202021402093 U CN 202021402093U CN 212757264 U CN212757264 U CN 212757264U
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Abstract
The utility model relates to a falling film evaporation overflow type pipe orifice film distributor, which comprises a film distributor, a pipe plate and an evaporation pipe, wherein an outer connecting sleeve is arranged in the middle of the upper part of the film distributor, a fixed seat is arranged below the outer connecting sleeve, a helical blade is arranged below the fixed seat, a plurality of overflow ports corresponding to the helical blade are uniformly arranged on the plane of the top of the film distributor and the top of the helical blade, a plurality of buffer slots are arranged below the helical blade, arc-shaped notches are arranged on the left side and the right side of each buffer slot, expansion lugs are arranged on the left side and the right side below the buffer slots, exhaust holes are arranged in the middle of the outer sides of the expansion lugs, an inner connecting sleeve is arranged below the expansion lugs, a positioning plate is arranged below the inner connecting sleeve, an exhaust pipe is arranged in the middle; the utility model has the advantages of simple structure, even and stable cloth membrane, high cloth membrane efficiency and convenient installation.
Description
Technical Field
The utility model belongs to the technical field of the film distributor, concretely relates to falling liquid film evaporation overflow formula mouth of pipe film distributor.
Background
The falling film evaporation is that the feed liquid is added from an upper pipe box of a heating chamber of the falling film evaporator, is uniformly distributed into each heat exchange pipe or evaporation pipe through a liquid distribution and film forming device, and flows from top to bottom in a uniform film shape under the action of gravity, vacuum induction and airflow; in the flowing process, the shell-pass heating medium is heated and vaporized, the generated steam and the liquid phase enter a separation chamber of an evaporator together, the steam and the liquid are fully separated, the steam enters a condenser for condensation (single-effect operation) or enters a next-effect evaporator as the heating medium, so that the multi-effect operation is realized, and the liquid phase is discharged from the separation chamber; therefore, the film distributor plays an important role in the production capacity and the operation performance of the falling film evaporator, the existing overflow type film distributor is of a sawtooth shape or a plug shape, and the structure has the problems of low film distribution efficiency, complex structure, uniform film distribution, easy blockage and the like; therefore, it is very necessary to provide a falling film evaporation overflow type pipe orifice film distributor with simple structure, uniform and stable film distribution, high film distribution efficiency and convenient installation.
Disclosure of Invention
The utility model aims at overcoming the defects of the prior art and providing a falling film evaporation overflow type pipe orifice film distributor which has simple structure, uniform and stable film distribution, high film distribution efficiency and convenient installation.
The purpose of the utility model is realized like this: a falling film evaporation overflow type pipe orifice film distributor comprises a film distributor, a pipe plate and an evaporation pipe, wherein the middle part above the film distributor is provided with an external connecting sleeve, a fixed seat is arranged below the outer connecting sleeve, a helical blade is arranged below the fixed seat, a plurality of overflow ports corresponding to the helical blades are uniformly arranged on the plane on which the tops of the helical blades are positioned above the film distributor, a plurality of buffer grooves are arranged below the helical blades, arc-shaped notches are arranged at the left side and the right side of each buffer groove, expansion convex blocks are arranged on the left side and the right side below the buffer groove, exhaust holes are arranged in the middle of the outer sides of the expansion convex blocks, an inner connecting sleeve is arranged below the expansion bump, a positioning plate is arranged below the inner connecting sleeve, the middle part of the inside of the evaporation tube is provided with an exhaust pipe, and a tube plate is arranged above the evaporation tube.
The film distributor is installed between the evaporation tube and the exhaust tube, the upper part of the film distributor is fixedly connected with the exhaust tube through an outer connecting sleeve, the lower part of the film distributor is fixedly connected with the exhaust tube through an inner connecting sleeve, and the upper end of the film distributor is fixedly connected with the tube plate through a fixing seat.
The helical blade is in a cone-shaped structure.
The buffer grooves are of a groove structure which is inclined downwards.
The arc groove openings on the left side and the right side of the buffer groove are of symmetrically arranged semicircular structures.
The overflow ports and the helical blades are eight and are arranged in an array by taking the circle center of the film distributor as an array point.
The circle center of the membrane distributor, the circle center of the outer connecting sleeve, the circle center of the fixing seat, the array point of the helical blade, the circle center of the buffer groove, the circle center of the inner connecting sleeve, the array point of the overflow port, the circle center of the exhaust pipe, the circle center of the evaporation pipe and the circle center of the positioning plate are the same point.
The utility model has the advantages that: the utility model relates to an overflow type film distributor for the mouth of a falling film evaporator, in use, the film distributor is arranged between an evaporation tube and an exhaust pipe, the upper end of the film distributor is fixed on a tube plate through a fixing seat, the upper end and the lower end of the film distributor are respectively connected with the corresponding ends of the exhaust pipe through an outer connecting sleeve and an inner connecting sleeve, a positioning plate can be used for positioning the installation position of the film distributor in the evaporation tube, and the whole structure is very convenient to install; the outer wall of the evaporation tube is in the shell pass of the evaporator, steam or other liquid media are introduced as a heating source, the heated or evaporated and concentrated liquid media enter the inner wall of each evaporation tube, at the inlet of the evaporation tube, the liquid firstly passes through the spiral blade with the cone-shaped structure of the film distributor, generates a certain circumferential rotation motion in the vertical descending process, is uniformly distributed along the circumferential direction of the tube wall, forms a liquid film layer with uniform thickness and flows downwards to the lower part of the tube wall, then passes through the inclined downward buffer groove to buffer the downward flow speed of the liquid, so that the flow speed is uniform and the film distribution is uniform and stable, the liquid film is heated and evaporated by the tube wall in the descending process of the liquid film, and the steam generated by evaporation is discharged from the holes on the exhaust tube and the exhaust holes at the lower; the liquid film is homogenized and stabilized along the inner wall of the evaporation tube under the action of the film distributor, so that the heat and mass transfer efficiency is effectively improved; the utility model has the advantages of simple structure, even and stable cloth membrane, high cloth membrane efficiency and convenient installation.
Drawings
Fig. 1 is a schematic view of the overall structure of a falling film evaporation overflow type pipe orifice film distributor of the present invention.
Fig. 2 is a top view of the film distributor of the falling film evaporation overflow type pipe orifice film distributor of the present invention.
Fig. 3 is a schematic view of the film distributor, the tube plate and the evaporation tube of the falling film evaporation overflow type pipe orifice film distributor in the installation and use state.
Fig. 4 is a top view of fig. 3.
In the figure: 1. the device comprises a film distributor 2, an outer connecting sleeve 3, a fixed seat 4, a helical blade 5, a buffer groove 6, an arc groove opening 7, an expansion bump 8, an exhaust hole 9, an inner connecting sleeve 10, an overflow opening 11, an exhaust pipe 12, a pipe plate 13, an evaporation pipe 14 and a positioning plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 1-4, a falling film evaporation overflow type pipe orifice film distributor comprises a film distributor 1, a pipe plate 12 and an evaporation pipe 13, wherein an outer connecting sleeve 2 is arranged in the middle of the upper part of the film distributor 1, a fixed seat 3 is arranged below the outer connecting sleeve 2, a helical blade 4 is arranged below the fixed seat 3, a plurality of overflow ports 10 corresponding to the helical blade 4 are uniformly arranged on the plane of the top of the film distributor 1 and the top of the helical blade 4, a plurality of buffer slots 5 are arranged below the helical blade 4, arc-shaped notches 6 are arranged on the left side and the right side of each buffer slot 5, expansion convex blocks 7 are arranged on the left side and the right side of each buffer slot 5, exhaust holes 8 are arranged in the middle of the outer sides of the expansion convex blocks 7, an inner connecting sleeve 9 is arranged below the expansion convex blocks 7, and a positioning plate 14 is arranged below the inner connecting sleeve 9, the middle part in evaporating pipe 13 be provided with blast pipe 11, evaporating pipe 13 top be provided with tube sheet 12.
The utility model relates to an overflow type film distributor for the mouth of a falling film evaporator, in use, install film distributor 1 between evaporating pipe 13 and blast pipe 11, and the upper end of film distributor 1 is fixed on tube sheet 12 through fixing base 3, the upper and lower both ends of film distributor 1 are connected with the corresponding end of blast pipe 11 through outer connecting sleeve 2, inner connecting sleeve 9 respectively, locating plate 14 can be used for positioning the installation position of film distributor 1 in evaporating pipe 13, the overall structure installation is very convenient; the outer wall of the evaporation tube 13 is in the shell pass of the evaporator, steam or other liquid media are introduced as a heating source, the heated or evaporated and concentrated liquid media enter the inner wall of each evaporation tube 13, at the inlet of the evaporation tube 13, the liquid firstly passes through the spiral blade 4 of the cone-shaped structure of the film distributor 1, a certain circumferential rotation motion is generated in the vertical descending process, the liquid is uniformly distributed along the circumferential direction of the tube wall, a liquid film layer with uniform thickness flows downwards to the tube wall, then the liquid passes through the buffer groove 5 which is inclined downwards, the down-flow speed of the liquid is buffered, the flow speed is uniform and the film distribution is uniform and stable, the liquid film is heated and evaporated by the tube wall in the descending process of the liquid film, and the steam generated by evaporation is discharged from the holes on the steam discharge tube 11 and the exhaust holes 8 at the; the liquid film is homogenized and stabilized along the inner wall of the evaporation tube 13 under the action of the film distributor 1, so that the heat and mass transfer efficiency is effectively improved; the utility model has the advantages of simple structure, even and stable cloth membrane, high cloth membrane efficiency and convenient installation.
Example 2
As shown in fig. 1-4, a falling film evaporation overflow type pipe orifice film distributor comprises a film distributor 1, a pipe plate 12 and an evaporation pipe 13, wherein an outer connecting sleeve 2 is arranged in the middle of the upper part of the film distributor 1, a fixed seat 3 is arranged below the outer connecting sleeve 2, a helical blade 4 is arranged below the fixed seat 3, a plurality of overflow ports 10 corresponding to the helical blade 4 are uniformly arranged on the plane of the top of the film distributor 1 and the top of the helical blade 4, a plurality of buffer slots 5 are arranged below the helical blade 4, arc-shaped notches 6 are arranged on the left side and the right side of each buffer slot 5, expansion convex blocks 7 are arranged on the left side and the right side of each buffer slot 5, exhaust holes 8 are arranged in the middle of the outer sides of the expansion convex blocks 7, an inner connecting sleeve 9 is arranged below the expansion convex blocks 7, and a positioning plate 14 is arranged below the inner connecting sleeve 9, the middle part in evaporating pipe 13 be provided with blast pipe 11, evaporating pipe 13 top be provided with tube sheet 12.
For better effect, the film distributor 1 is installed between the evaporation tube 13 and the exhaust tube 11, the upper part of the film distributor 1 is fixedly connected with the exhaust tube 11 through the outer connecting sleeve 2, the lower part of the film distributor is fixedly connected with the exhaust tube 11 through the inner connecting sleeve 9, and the upper end of the film distributor 1 is fixedly connected with the tube plate 12 through the fixing seat 3.
For better effect, the helical blades 4 are in a cone-shaped structure, so that the liquid film generates a certain circumferential rotation motion in the vertical descending process, the liquid is uniformly distributed along the circumferential direction of the tube wall of the evaporation tube 13, and a liquid film layer with uniform thickness flows towards the lower part of the tube wall of the evaporation tube 13.
For better effect, the buffer grooves 5 are all of a groove structure which is inclined downwards, and play a role in buffering the flow velocity of the falling liquid film, so that the flow velocity of the liquid film is uniform, the film distribution is uniform and stable, the heat and mass transfer efficiency is effectively improved, and the product quality is improved.
For better effect, the arc notches 6 on the left side and the right side of the buffer slot 5 are both of symmetrically arranged semicircular structures.
For better effect, the overflow ports 10 and the helical blades 4 are eight and are arranged in an array by taking the circle center of the film distributor 1 as an array point.
For better effect, the circle center of the film distributor 1, the circle center of the outer connecting sleeve 2, the circle center of the fixed seat 3, the array point of the helical blade 4, the circle center of the buffer groove 5, the circle center of the inner connecting sleeve 9, the array point of the overflow port 10, the circle center of the exhaust pipe 11, the circle center of the evaporation pipe 13 and the circle center of the positioning plate 14 are the same point.
The utility model relates to an overflow type film distributor for the mouth of a falling film evaporator, in use, install film distributor 1 between evaporating pipe 13 and blast pipe 11, and the upper end of film distributor 1 is fixed on tube sheet 12 through fixing base 3, the upper and lower both ends of film distributor 1 are connected with the corresponding end of blast pipe 11 through outer connecting sleeve 2, inner connecting sleeve 9 respectively, locating plate 14 can be used for positioning the installation position of film distributor 1 in evaporating pipe 13, the overall structure installation is very convenient; the outer wall of the evaporation tube 13 is in the shell pass of the evaporator, steam or other liquid media are introduced as a heating source, the heated or evaporated and concentrated liquid media enter the inner wall of each evaporation tube 13, at the inlet of the evaporation tube 13, the liquid firstly passes through the spiral blade 4 of the cone-shaped structure of the film distributor 1, a certain circumferential rotation motion is generated in the vertical descending process, the liquid is uniformly distributed along the circumferential direction of the tube wall, a liquid film layer with uniform thickness flows downwards to the tube wall, then the liquid passes through the buffer groove 5 which is inclined downwards, the down-flow speed of the liquid is buffered, the flow speed is uniform and the film distribution is uniform and stable, the liquid film is heated and evaporated by the tube wall in the descending process of the liquid film, and the steam generated by evaporation is discharged from the holes on the steam discharge tube 11 and the exhaust holes 8 at the; the liquid film is homogenized and stabilized along the inner wall of the evaporation tube 13 under the action of the film distributor 1, so that the heat and mass transfer efficiency is effectively improved; the utility model has the advantages of simple structure, even and stable cloth membrane, high cloth membrane efficiency and convenient installation.
Claims (7)
1. The utility model provides a falling film evaporation overflow formula mouth of pipe membrane distributor, it includes membrane distributor, tube sheet and evaporating pipe, its characterized in that: film distributor top middle part be provided with outer joint sleeve, outer joint sleeve below set up the fixing base, fixing base below be provided with helical blade, film distributor top evenly be provided with a plurality of overflow mouth that corresponds with helical blade top place plane, helical blade below be provided with a plurality of dashpot, every dashpot left and right sides all be provided with the arc notch, dashpot below left and right sides all be provided with the inflation lug, inflation lug outside middle part all be provided with the exhaust hole, inflation lug below be provided with interior joint sleeve, interior joint sleeve below be provided with the locating plate, the inside middle part of evaporating pipe be provided with the blast pipe, evaporating pipe top be provided with the tube sheet.
2. The falling film evaporation overflow type pipe orifice film distributor according to claim 1, wherein: the film distributor is installed between the evaporation tube and the exhaust tube, the upper part of the film distributor is fixedly connected with the exhaust tube through an outer connecting sleeve, the lower part of the film distributor is fixedly connected with the exhaust tube through an inner connecting sleeve, and the upper end of the film distributor is fixedly connected with the tube plate through a fixing seat.
3. The falling film evaporation overflow type pipe orifice film distributor according to claim 1, wherein: the helical blade is in a cone-shaped structure.
4. The falling film evaporation overflow type pipe orifice film distributor according to claim 1, wherein: the buffer grooves are of a groove structure which is inclined downwards.
5. The falling film evaporation overflow type pipe orifice film distributor according to claim 1 or 4, wherein: the arc groove openings on the left side and the right side of the buffer groove are of symmetrically arranged semicircular structures.
6. The falling film evaporation overflow type pipe orifice film distributor according to claim 1 or 3, wherein: the overflow ports and the helical blades are eight and are arranged in an array by taking the circle center of the film distributor as an array point.
7. The falling film evaporation overflow type pipe orifice film distributor according to claim 1, 2, 3 or 4, wherein: the circle center of the membrane distributor, the circle center of the outer connecting sleeve, the circle center of the fixing seat, the array point of the helical blade, the circle center of the buffer groove, the circle center of the inner connecting sleeve, the array point of the overflow port, the circle center of the exhaust pipe, the circle center of the evaporation pipe and the circle center of the positioning plate are the same point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402093.8U CN212757264U (en) | 2020-07-16 | 2020-07-16 | Falling film evaporation overflow type pipe orifice film distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402093.8U CN212757264U (en) | 2020-07-16 | 2020-07-16 | Falling film evaporation overflow type pipe orifice film distributor |
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| CN212757264U true CN212757264U (en) | 2021-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021402093.8U Active CN212757264U (en) | 2020-07-16 | 2020-07-16 | Falling film evaporation overflow type pipe orifice film distributor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198188A (en) * | 2021-05-10 | 2021-08-03 | 碳索(杭州)能源环境科技有限公司 | For CO2Desorption falling film reboiler |
| CN113694548A (en) * | 2021-08-26 | 2021-11-26 | 上海精日新材料科技有限公司 | Energy-saving film evaporation device |
-
2020
- 2020-07-16 CN CN202021402093.8U patent/CN212757264U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113198188A (en) * | 2021-05-10 | 2021-08-03 | 碳索(杭州)能源环境科技有限公司 | For CO2Desorption falling film reboiler |
| CN113694548A (en) * | 2021-08-26 | 2021-11-26 | 上海精日新材料科技有限公司 | Energy-saving film evaporation device |
| CN113694548B (en) * | 2021-08-26 | 2022-08-30 | 上海精日新材料科技有限公司 | Energy-saving film evaporation device |
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