CN111467822B - Double-effect combined inverted cone graphite falling film evaporator - Google Patents
Double-effect combined inverted cone graphite falling film evaporator Download PDFInfo
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- CN111467822B CN111467822B CN201911333395.6A CN201911333395A CN111467822B CN 111467822 B CN111467822 B CN 111467822B CN 201911333395 A CN201911333395 A CN 201911333395A CN 111467822 B CN111467822 B CN 111467822B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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Abstract
The invention discloses a double-effect combined inverted-cone graphite falling-film evaporator, which belongs to the field of falling-film evaporators and comprises a shell, wherein an upper disc and a lower disc are fixedly connected inside the shell, the upper disc is positioned on the upper side of the lower disc, a plurality of heat exchange tubes which are uniformly distributed are arranged inside the shell, and the upper end and the lower end of each heat exchange tube respectively penetrate through the upper disc and the lower disc and are fixedly connected with the inside of the heat exchange tube. Has good recycling performance.
Description
Technical Field
The invention relates to the field of falling film evaporators, in particular to a double-effect combined inverted-cone graphite falling film evaporator.
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 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. The graphite falling film evaporator adopts steam heating evaporation, and the part of the equipment contacting with corrosive media is made of impregnated graphite, so that the chemical stability is good, and the evaporation efficiency is high.
The feed liquid distributor is a key part of the falling film evaporator, feed liquid enters the feed liquid distributor from the top, the feed liquid distributor uniformly distributes the feed liquid into each heating pipe and enables the feed liquid to flow downwards along the inner wall of the pipe in a film shape, and the liquid film is evaporated and vaporized by heat transferred from the pipe wall. When the heat transfer temperature difference is not large, vaporization occurs on the inner surface of the strongly disturbed film, not on the interface of the heating tube and the liquid film (i.e., the inner surface of the heating tube), and thus scaling is not easily generated.
The heat exchange intensity and the production capacity of the falling film evaporator substantially depend on the degree of uniformity of the distribution of the feed liquid along the heat exchange tubes. By uniformly distributed is meant not only that the liquid is uniformly distributed in each tube, but also that it is uniformly distributed along the entire circumference of each tube and remains uniform throughout the length of the tube. When the feed liquid does not uniformly wet the inner surface of all the heating tubes, the liquid-deficient or liquid-poor surfaces may become fouled by evaporation, which in turn retards the flow of the liquid film and further worsens the heat transfer conditions in the adjacent zones.
Because different feed liquids have different viscosities and flowing properties, the influence of film distribution thickness on the uniform film distribution effect is considered during film distribution, smooth flowing of the feed liquids is ensured, the feed liquids are not easy to block and the films are uniformly distributed, but the conventional graphite falling-film evaporator is difficult to adjust the film distribution thickness, so that different types of feed liquids need to be used, and in addition, the treatment of the scaling condition of the feed liquids in the heat exchange tubes of the evaporator is still a great problem.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a double-effect combined inverted-cone graphite falling-film evaporator, which can reasonably set the film distribution thickness according to the characteristics of the viscosity, the flowing property and the like of a feed liquid, enables the feed liquid to smoothly flow along the inner wall of a heat exchange tube in a film shape, ensures the uniform film distribution of the feed liquid in the heat exchange tube, has the applicability beyond the existing falling-film evaporator, solves the problem that the scale formation of the feed liquid in the heat exchange tube is difficult to clean by arranging a connecting line type cleaning column in a liquid isolating groove, realizes the high-efficiency cleaning work of a plurality of heat exchange tubes simultaneously and has good recycling performance.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A double-effect combined inverted-cone graphite falling-film evaporator comprises a shell, wherein an upper disc and a lower disc are fixedly connected inside the shell, the upper disc is positioned on the upper side of the lower disc, a plurality of uniformly distributed heat exchange tubes are arranged inside the shell, the upper end and the lower end of each heat exchange tube respectively penetrate through the upper disc and the lower disc and are fixedly connected with the inside of the upper disc, a movable disc is arranged on the upper side of the upper disc, the side wall of the movable disc is connected with the inner wall of the shell in a sliding manner, an electric push rod is fixedly connected to the top end of the shell, the telescopic end of the electric push rod penetrates through the top end of the shell and is fixedly connected with the upper end of the movable disc, a plurality of uniformly distributed flow limiting columns are arranged between the movable disc and the upper disc, the upper ends of the flow limiting columns penetrate through the movable disc and are fixedly connected with the inside of the movable disc, each heat exchange tube comprises a straight tube and a conical tube, and the conical tube is fixedly connected to the upper end of the straight tube, the flow limiting column is positioned on the inner side of the conical tube, the lower end of the flow limiting column is provided with a liquid isolating groove, the interior of the liquid isolating groove is provided with a connecting line type cleaning column, the outer end of the shell is fixedly connected with a feed pipe, an air inlet pipe, an air outlet pipe and an air outlet pipe, the feed pipe is positioned on the upper side of the movable disc, the air inlet pipe and the air outlet pipe are positioned on the lower side of the lower disc, the bottom end of the shell is fixedly connected with a discharge pipe, and the discharge pipe is connected with a liquid pump. The high-efficiency cleaning work of the heat exchange tubes is synchronously carried out at the same time, and the high-efficiency cleaning device has good recycling performance.
Further, the clean post of line connection includes the convex frizing, line and lower line are gone up to the equal fixedly connected with in upper and lower both ends of convex frizing, the upside that removes the dish is equipped with electric rotating shaft, separate the last inner wall in cistern and seted up the line hole, go up the line and run through the line hole and twine in the surface of last electric rotating shaft, the downside of lower dish is equipped with down electronic the rotation, the line runs through the inside of heat exchange tube and twines in lower electronic pivoted surface down, carries out synchronous start through last electric rotating shaft and lower electronic rotation, drives line and lower line respectively and receive and releases the line process for the convex frizing reciprocates along the inner wall of heat exchange tube, clears up the dirt of heat exchange tube inner wall.
Further, a plurality of fixing bases of outer end fixedly connected with of casing, go up the electric rotating shaft and all run through the inner wall of casing and rotate with the fixing base with lower electric rotation both ends and be connected, the fixing base plays support fixed action to going up electric rotating shaft and lower electric rotation, makes and goes up electric rotating shaft and can the steady rotation with lower electric rotation.
Further, the outer fixed surface of convex frizing is connected with brush and clean cotton, clean cotton is located the upside of brush, and brush and clean cotton can assist the convex frizing to clear up the dirt of heat transfer pipe inner wall, reinforcing cleaning performance.
Furthermore, the maximum outer ring diameter of the convex scraping disc and the outer ring diameter of the cleaning cotton are the same as the inner ring diameter of the straight pipe, so that the convex scraping disc is convenient for scraping off dirt on the inner wall of the heat exchange pipe, and the cleaning cotton is convenient for wiping off dirt residues on the inner wall of the heat exchange pipe.
Furthermore, the upper surface of the conical pipe and the upper surface of the upper disc are positioned on the same horizontal plane, so that the feed liquid at the upper end of the upper disc can smoothly flow downwards along the inner wall of the conical pipe.
Furthermore, the diameter of the outer ring of the flow limiting column is between the maximum diameter of the outer ring and the minimum diameter of the outer ring of the conical pipe, so that the film distribution thickness can be conveniently adjusted, and the feed liquid can flow downwards in a film shape along the gap between the flow limiting column and the inner wall of the conical pipe.
Further, the bottom of casing is fixedly connected with the blow off pipe still, the outer end threaded connection of blow off pipe has the stopcock, and the blow off pipe is used for the discharge of clearance back waste water.
Furthermore, the winding directions of the plurality of upper connecting wires on the upper electric rotating shaft are the same, and the winding directions of the plurality of lower connecting wires on the lower electric rotating shaft are the same, so that the synchronous winding and unwinding processes of the upper connecting wires and the lower connecting wires are conveniently realized.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the film distribution thickness can be reasonably set according to the characteristics of the viscosity, the flowing property and the like of the feed liquid, the feed liquid can smoothly flow along the inner wall of the heat exchange tube in a film shape, the film distribution uniformity of the feed liquid in the heat exchange tube is ensured, the film distribution device has the applicability which cannot be reached by the existing falling film evaporator, in addition, the large difficulty that the scale of the feed liquid in the heat exchange tube is difficult to clean is solved by arranging the connecting line type cleaning column in the liquid isolating groove, the efficient cleaning work of a plurality of heat exchange tubes is synchronously carried out at the same time, and the good recycling performance is realized.
(2) Clean post of line formula includes the convex frizing, line and lower line are gone up to the equal fixedly connected with in upper and lower both ends of convex frizing, the upside of removing the dish is equipped with electric rotating shaft, separate the last inner wall in cistern and seted up the line hole, go up the line and run through the line hole and twine in the surface of last electric rotating shaft, the downside of lower wall is equipped with down electronic rotation, the lower line runs through the inside of heat exchange tube and twines in electronic pivoted surface down, carry out synchronous start with lower electronic rotation through last electric rotating shaft, it receives the unwrapping wire process with the lower line to drive respectively, make the convex frizing reciprocate along the inner wall of heat exchange tube, the dirt to the heat exchange tube inner wall is cleared up.
(3) The outer end fixedly connected with a plurality of fixing bases of casing goes up electric rotating shaft and is connected with the fixing base rotation with the inner wall that the casing was all run through at electric rotating shaft both ends down, and the fixing base plays support fixed action to going up electric rotating shaft and electric rotating down, makes and goes up electric rotating shaft and electric rotating down can the steady rotation.
(4) The outer fixed surface of convex frizing is connected with brush and clean cotton, and clean cotton is located the upside of brush, and brush and clean cotton can assist the convex frizing to clear up the dirt of heat transfer pipe inner wall, reinforcing cleaning performance.
(5) The maximum outer ring diameter of the convex scraping disc and the outer ring diameter of the cleaning cotton are the same as the inner ring diameter of the straight pipe, so that the convex scraping disc is convenient for scraping off dirt on the inner wall of the heat exchange pipe, and the cleaning cotton is convenient for wiping off dirt residues on the inner wall of the heat exchange pipe.
(6) The upper surface of the conical pipe and the upper surface of the upper disc are positioned on the same horizontal plane, so that the feed liquid at the upper end of the upper disc can smoothly flow downwards along the inner wall of the conical pipe.
(7) The diameter of the outer ring of the flow limiting column is between the maximum diameter of the outer ring and the minimum diameter of the outer ring of the conical pipe, so that the film distribution thickness can be conveniently adjusted, and the feed liquid can flow downwards in a film shape along the gap between the flow limiting column and the inner wall of the conical pipe.
(8) The bottom of casing still fixedly connected with blow off pipe, the outer end threaded connection of blow off pipe has the stopcock, and the blow off pipe is used for the discharge of clearance back waste water.
(9) The winding directions of the upper connecting wires on the upper electric rotating shaft are the same, and the winding directions of the lower connecting wires on the lower electric rotating shaft are the same, so that the synchronous take-up and pay-off processes of the upper connecting wires and the lower connecting wires are conveniently realized.
Drawings
FIG. 1 is a front perspective view of the present invention;
FIG. 2 is a rear perspective view of the present invention;
FIG. 3 is a schematic front view of the present invention;
FIG. 4 is a schematic side view of the present invention;
FIG. 5 is a schematic view of the structure at A in FIG. 4;
FIG. 6 is a perspective view of the male scraping disk of the present invention;
fig. 7 is a side view schematically illustrating the construction of the heat exchange pipe according to the present invention when cleaning the heat exchange pipe.
The reference numbers in the figures illustrate:
the device comprises a shell 1, heat exchange tubes 2, a straight tube 201, a conical tube 202, an upper disc 3, a lower disc 4, a movable disc 5, a flow-limiting column 6, a liquid isolating groove 601, a convex scraping disc 7, a brush 8, cleaning cotton 9, a lower connecting line 10, an upper connecting line 11, an upper electric rotating shaft 12, a lower electric rotating shaft 13, a fixed seat 14, an electric push rod 15, a sewage discharge pipe 16, a 17 feeding pipe, an 18 air inlet pipe, a 19 water outlet pipe, a 20 air outlet pipe, a 21 discharging pipe and a 22 liquid pump.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1, a double-effect combined inverted cone graphite falling film evaporator comprises a shell 1, referring to fig. 3, an upper disc 3 and a lower disc 4 are fixedly connected inside the shell 1, the upper disc 3 is positioned on the upper side of the lower disc 4, a plurality of uniformly distributed heat exchange tubes 2 are arranged inside the shell 1, the upper end and the lower end of each heat exchange tube 2 respectively penetrate through the upper disc 3 and the lower disc 4 and are fixedly connected with the inside of the upper disc 3, the lower disc 4 is used for fixing the heat exchange tubes 2, a moving disc 5 is arranged on the upper side of the upper disc 3, the side wall of the moving disc 5 is in sliding connection with the inner wall of the shell 1, an electric push rod 15 is fixedly connected to the top end of the shell 1, the telescopic end of the electric push rod 15 penetrates through the top end of the shell 1 and is fixedly connected with the upper end of the moving disc 5, a plurality of uniformly distributed current limiting columns 6 are arranged between the moving disc 5 and the upper disc 3, the number of the current limiting columns 6 is the same as that of the heat exchange tubes 2, and the heat exchange tubes are in one-to-one correspondence, referring to fig. 5, the upper end of the flow-limiting column 6 penetrates through the moving disc 5 and is fixedly connected with the inside of the moving disc 5, the heat exchange tube 2 comprises a straight tube 201 and a tapered tube 202, the tapered tube 202 is fixedly connected to the upper end of the straight tube 201, the flow-limiting column 6 is located on the inner side of the tapered tube 202, the electric push rod 15 is started to drive the moving disc 5 and the flow-limiting column 6 to move up and down, the position of the flow-limiting column 6 is adjusted, the size of a gap between the inner wall of the tapered tube 202 and the flow-limiting column 6 is changed by changing the position of the flow-limiting column 6, and the feed liquid flows downwards along the gap between the inner wall of the tapered tube 202 and the flow-limiting column 6, so that the adjustment of the film distribution thickness is realized.
Referring to fig. 5, the upper surface of the tapered tube 202 and the upper surface of the upper disc 3 are located on the same horizontal plane, so that the material liquid at the upper end of the upper disc 3 can smoothly flow downward along the inner wall of the tapered tube 202, and the outer diameter of the flow-limiting column 6 is between the maximum outer diameter and the minimum outer diameter of the tapered tube 202, which facilitates the adjustment of the film-distribution thickness, so that the material liquid flows downward in a film shape along the gap between the flow-limiting column 6 and the inner wall of the tapered tube 202.
Referring to fig. 4, the outer end of the shell 1 is fixedly connected with a feeding pipe 17, an air inlet pipe 18, an air outlet pipe 19 and an air outlet pipe 20, the feeding pipe 17 is located on the upper side of the movable disk 5, the air inlet pipe 18 and the air outlet pipe 19 are located between the upper disk 3 and the lower disk 4, the air outlet pipe 20 is located on the lower side of the lower disk 4, the bottom end of the shell 1 is fixedly connected with a discharging pipe 21, the discharging pipe 21 is connected with a liquid pump 22, when in use, feed liquid is introduced into the shell 1 through the feed pipe 17, heating steam is introduced through the air inlet pipe 18, the feed liquid uniformly enters the heat exchange pipe 2 to flow downwards in a film shape, evaporation and vaporization are carried out under the heat of the heating steam, the generated steam and the liquid film flow downwards in a parallel flow manner and reach the lower side of the lower disc 4, steam is discharged through an air outlet pipe 20, concentrated feed liquid enters the next operation through a discharge pipe 21 and a liquid pump 22, and after heat exchange is carried out on the heating steam, generated condensate water flows out through a water outlet pipe 19.
In the invention, after the feed liquid enters the shell 1 through the feed pipe 17, the feed liquid flows to the upper end of the upper disc 3 through the through hole on the moving disc 5, then flows downwards along the gap between the inner wall of the conical pipe 202 and the flow limiting column 6, and finally flows downwards in a film shape on the inner wall of the straight pipe 201, therefore, before the feed liquid is used, the electric push rod 15 is started to drive the moving disc 5 and the flow limiting column 6 to move up and down, the position of the flow limiting column 6 is adjusted, and the size of the gap between the inner wall of the conical pipe 202 and the flow limiting column 6 is changed by changing the position of the flow limiting column 6, thereby realizing the adjustment of the film distribution thickness.
Referring to fig. 5, a liquid isolating groove 601 is formed at the lower end of a flow limiting column 6, a connecting line type cleaning column is arranged inside the liquid isolating groove 601, the connecting line type cleaning column includes a convex scraping disc 7, an upper connecting line 11 and a lower connecting line 10 are fixedly connected to the upper and lower ends of the convex scraping disc 7, an upper electric rotating shaft 12 is arranged on the upper side of a moving disc 5, a line hole is formed in the upper inner wall of the liquid isolating groove 601, referring to fig. 4, the upper connecting line 11 penetrates through the line hole and is wound on the outer surface of the upper electric rotating shaft 12, a lower electric rotating shaft 13 is arranged on the lower side of a lower disc 4, the lower connecting line 10 penetrates through the inside of a heat exchanging pipe 2 and is wound on the outer surface of the lower electric rotating shaft 13, the winding directions of a plurality of upper connecting lines 11 on the upper electric rotating shaft 12 are the same, the winding directions of a plurality of lower connecting lines 10 on the lower electric rotating shaft 13 are the same, so as to realize the synchronous winding and unwinding processes of the upper connecting line 11 and the lower connecting line 10, referring to fig. 3, the outer end fixedly connected with a plurality of fixing bases 14 of casing 1 goes up electric rotating shaft 12 and lower electric rotating 13 both ends and all runs through the inner wall of casing 1 and is connected with fixing base 14 rotation, and fixing base 14 plays support fixed action to going up electric rotating shaft 12 and lower electric rotating 13, makes and goes up electric rotating shaft 12 and lower electric rotating 13 can the steady rotation.
Please refer to fig. 5 and 6, the outer surface of the convex scraping disc 7 is fixedly connected with a brush 8 and a cleaning cotton 9, the cleaning cotton 9 is located on the upper side of the brush 8, the brush 8 and the cleaning cotton 9 can assist the convex scraping disc 7 to clean up the dirt on the inner wall of the heat exchange tube 2, the cleaning effect is enhanced, the maximum outer ring diameter of the convex scraping disc 7 and the outer ring diameter of the cleaning cotton 9 are the same as the inner ring diameter of the straight tube 201, so that the convex scraping disc 7 is convenient for scraping off the dirt on the inner wall of the heat exchange tube 2, the cleaning cotton 9 is convenient for wiping off the dirt residue on the inner wall of the heat exchange tube 2, the flow-limiting column 6 plays a role in isolating the feed liquid, so that the feed liquid cannot pollute the convex scraping disc 7, the brush 8 and the cleaning cotton 9, the bottom end of the shell 1 is also fixedly connected with a drain pipe 16, the outer end of the drain pipe 16 is in threaded connection with a pipe plug, and the drain pipe 16 is used for discharging the waste water after cleaning.
When the heat exchange tube 2 is cleaned, referring to fig. 7, the upper electric rotating shaft 12 and the lower electric rotating shaft 13 are synchronously started to respectively drive the upper connecting wire 11 and the lower connecting wire 10 to perform a wire winding and unwinding process, such as: when the upper connecting wire 11 and the upper electric rotating shaft 12 are used for paying off, the lower connecting wire 10 and the lower electric rotating shaft 13 are used for taking up and paying off, the taking-up and paying-off processes are synchronously carried out, so that the convex scraping disc 7 stably moves up and down along the inner wall of the heat exchange tube 2, and dirt on the inner wall of the heat exchange tube 2 is cleaned through the convex scraping disc 7, the brush 8 and the cleaning cotton 9.
The invention can reasonably set the film thickness according to the characteristics of the viscosity, the flowing property and the like of the material liquid, so that the material liquid can smoothly flow along the inner wall of the heat exchange tube 2 in a film shape, the uniform film distribution of the material liquid in the heat exchange tube 2 is ensured, the invention has the applicability beyond the existing falling film evaporator, in addition, the problem that the scale formation of the material liquid in the heat exchange tube 2 is difficult to clean is solved by arranging the connecting line type cleaning column in the liquid isolating groove 601, the high-efficiency cleaning work of simultaneously and synchronously carrying out a plurality of heat exchange tubes 2 is realized, and the invention has good cycle use performance.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (5)
1. The utility model provides a double-effect combines back taper graphite falling film evaporator, includes casing (1), its characterized in that: an upper disc (3) and a lower disc (4) are fixedly connected to the inside of the shell (1), the upper disc (3) is located on the upper side of the lower disc (4), a plurality of uniformly distributed heat exchange tubes (2) are arranged inside the shell (1), the upper end and the lower end of each heat exchange tube (2) respectively penetrate through the upper disc (3) and the lower disc (4) and are fixedly connected with the inside of the upper disc (3), a moving disc (5) is arranged on the upper side of the upper disc (3), the side wall of the moving disc (5) is slidably connected with the inner wall of the shell (1), an electric push rod (15) is fixedly connected to the top end of the shell (1), the telescopic end of the electric push rod (15) penetrates through the top end of the shell (1) and is fixedly connected with the upper end of the moving disc (5), a plurality of uniformly distributed current limiting columns (6) are arranged between the moving disc (5) and the upper disc (3), the upper ends of the current limiting columns (6) penetrate through the moving disc (5) and are fixedly connected with the inside of the moving disc (5), the heat exchange tube (2) comprises a straight tube (201) and a conical tube (202), the conical tube (202) is fixedly connected to the upper end of the straight tube (201), the flow limiting column (6) is positioned at the inner side of the conical pipe (202), a liquid isolating groove (601) is arranged at the lower end of the flow limiting column (6), a connecting line type cleaning column is arranged inside the liquid isolating groove (601), the outer end of the shell (1) is fixedly connected with a feeding pipe (17), an air inlet pipe (18), a water outlet pipe (19) and an air outlet pipe (20), the feeding pipe (17) is positioned at the upper side of the movable disc (5), the air inlet pipe (18) and the water outlet pipe (19) are positioned between the upper disc (3) and the lower disc (4), the gas outlet pipe (20) is positioned at the lower side of the lower disc (4), the bottom end of the shell (1) is fixedly connected with a discharge pipe (21), and the discharge pipe (21) is connected with a liquid pump (22); the connecting type cleaning column comprises a convex scraping disc (7), the upper end and the lower end of the convex scraping disc (7) are fixedly connected with an upper connecting line (11) and a lower connecting line (10), the upper side of the moving disc (5) is provided with an upper electric rotating shaft (12), the upper inner wall of the liquid isolating groove (601) is provided with a line hole, the upper connecting line (11) penetrates through the line hole and is wound on the outer surface of the upper electric rotating shaft (12), the lower side of the lower disc (4) is provided with a lower electric rotating shaft (13), and the lower connecting line (10) penetrates through the inside of the heat exchange tube (2) and is wound on the outer surface of the lower electric rotating shaft (13); the outer end of the shell (1) is fixedly connected with a plurality of fixing seats (14), and two ends of the upper electric rotating shaft (12) and the lower electric rotating shaft (13) penetrate through the inner wall of the shell (1) and are rotatably connected with the fixing seats (14); the outer surface of the convex scraping disc (7) is fixedly connected with a brush (8) and cleaning cotton (9), and the cleaning cotton (9) is positioned on the upper side of the brush (8); the maximum outer ring diameter of the convex scraping disc (7) and the outer ring diameter of the cleaning cotton (9) are the same as the inner ring diameter of the straight pipe (201).
2. The double-effect combined inverted conical graphite falling film evaporator according to claim 1, characterized in that: the upper surface of the conical pipe (202) and the upper surface of the upper disc (3) are positioned on the same horizontal plane.
3. The double-effect combined inverted conical graphite falling film evaporator according to claim 1, characterized in that: the outer ring diameter of the flow limiting column (6) is between the maximum outer ring diameter and the minimum outer ring diameter of the conical pipe (202).
4. The double-effect combined inverted conical graphite falling film evaporator according to claim 1, characterized in that: the bottom end of the shell (1) is fixedly connected with a sewage discharge pipe (16), and the outer end of the sewage discharge pipe (16) is in threaded connection with a pipe plug.
5. The dual-effect combined inverted conical graphite falling film evaporator according to claim 4, characterized in that: the winding directions of the upper connecting wires (11) on the upper electric rotating shaft (12) are the same, and the winding directions of the lower connecting wires (10) on the lower electric rotating shaft (13) are the same.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911333395.6A CN111467822B (en) | 2019-12-23 | 2019-12-23 | Double-effect combined inverted cone graphite falling film evaporator |
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| CN201911333395.6A CN111467822B (en) | 2019-12-23 | 2019-12-23 | Double-effect combined inverted cone graphite falling film evaporator |
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| CN111467822A CN111467822A (en) | 2020-07-31 |
| CN111467822B true CN111467822B (en) | 2021-11-26 |
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| CN113941164B (en) * | 2021-12-22 | 2022-03-11 | 东营市赫邦化工有限公司 | Caustic soda evaporation equipment |
| CN114669066B (en) * | 2022-03-24 | 2023-09-26 | 四川点石能源股份有限公司 | MVR evaporation concentration system |
| CN116983682B (en) * | 2023-09-27 | 2023-11-28 | 云南能投绿色新材有限责任公司 | Caustic soda evaporation equipment |
| CN117942596B (en) * | 2024-03-11 | 2024-07-30 | 无锡化工装备股份有限公司 | Multi-layer liquid distribution device of falling film reboiler and distribution method thereof |
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