CN216909192U

CN216909192U - Falling film evaporator

Info

Publication number: CN216909192U
Application number: CN202123346005.4U
Authority: CN
Inventors: 朱成才; 牟俊玲; 王艳波
Original assignee: Weifang Yide Heat Exchange Equipment Co ltd
Current assignee: Weifang Yide Heat Exchange Equipment Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-07-08
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a falling film evaporator, and particularly relates to the technical field of falling film evaporators. According to the utility model, by arranging the uniform dispersion mechanism, the feed liquid is pre-stored and discharged through the spray head at the same time by reducing the descending speed of the feed liquid, so that the feed liquid can enter the pipeline more uniformly, and the feed liquid can be uniformly distributed in the pipeline at the same time, thereby solving the problem of non-uniform liquid distribution of the falling-film evaporator.

Description

Falling film evaporator

Technical Field

The utility model relates to the technical field of falling film evaporators, in particular to a 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. 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 the 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.

After the falling film evaporator injects the feed liquid, the feed liquid is required to be controlled to uniformly enter a plurality of pipelines, the feed liquid generally uniformly leaks through the leakage holes wrapped by the cofferdams on the distribution discs, but if the feed liquid is injected in too much amount at one time, the feed liquid can directly enter the leakage holes from the tops of the cofferdams, so that the feed liquid is injected in non-uniform.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a falling-film evaporator, in which a uniform dispersion mechanism is provided, so that the falling speed of the material liquid is reduced, and the material liquid is pre-stored and discharged through a nozzle at the same time, so that the material liquid can enter a pipeline more uniformly, and the material liquid can be distributed in the pipeline uniformly at the same time, thereby solving the problem of non-uniform liquid distribution of the falling-film evaporator, and solving the problem mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a falling film evaporator comprises an evaporator box body, wherein a first supporting column is arranged at the bottom of the evaporator box body, a first baffle is arranged inside the evaporator box body, a second baffle is arranged at the bottom of the first baffle, a connecting pipe is arranged between the first baffle and the second baffle, a feeding pipe is arranged at the top of the evaporator box body, and a uniform dispersion mechanism is arranged between the connecting pipe and the feeding pipe;

the uniform dispersion mechanism comprises a moving box, a telescopic pipe is arranged between the moving box and a feeding pipe, a hydraulic rod is arranged at the top of the moving box, a fixed plate is arranged at the joint of the hydraulic rod and the inner wall of the evaporator box body, a buffer plate is arranged inside the moving box, a leak hole is formed in the surface of the top of the buffer plate, a feeding pipe is arranged at the bottom of the moving box, and a spray head is arranged at the bottom of the feeding pipe;

evaporator box one side is provided with the discharging pipe, discharging pipe one side is provided with the workbin, workbin one side is provided with the air hose, the workbin bottom is provided with the second support column.

In a preferred embodiment, the mobile box is arranged inside the evaporator box body, the bottom of the telescopic pipe penetrates through the mobile box and extends into the mobile box, and the number of the hydraulic rods is two.

In a preferred embodiment, the number of the leakage holes, the blanking pipes and the nozzles is multiple, the nozzles are located in one-to-one correspondence with the tops of the connecting pipes, the tops of the connecting pipes penetrate through the first baffle and extend to the tops of the first baffle, and the bottoms of the connecting pipes penetrate through the second baffle and extend to the bottom of the second baffle.

In a preferred embodiment, the top of the blanking pipe penetrates through the movable box and extends into the movable box, a sliding groove is formed in one side of the inner wall of the evaporator box body, sliding blocks are arranged on two sides of the movable box body, and the sliding groove is connected with the sliding blocks in a sliding mode.

In a preferred embodiment, a liquid outlet pipe is arranged on one side of the evaporator box body, a cooling box is arranged on one side of the liquid outlet pipe, and a circulating pump is arranged at the top of the cooling box.

In a preferred embodiment, a pipeline is arranged between the cooling tank and the circulating pump, and one end of the pipeline penetrates through the evaporator tank and extends to the inside of the evaporator tank.

The utility model has the technical effects and advantages that:

1. through setting up the homodisperse mechanism, pour into the feed liquid, feed liquid to the removal box inside afterwards, leak down through the small opening subsequently, thus reduce the falling speed of feed liquid, the shower nozzle of blanking tube bottom is closed at this moment, until the feed liquid in the blanking tube is all filled, feed liquid level is higher than blanking tube at the same time, open the hydraulic stem, make the shower nozzle stretch into the connecting pipe inside, through opening the shower nozzle subsequently, make the feed liquid enter the bottom of evaporator tank through the connecting pipe, introduce the coolant liquid with the pipeline at the same time, carry on the heat transfer to the feed liquid in the connecting pipe, the feed liquid after the heat transfer can enter the discharging box through the discharging pipe, thus form complete liquid, compared with prior art, through reducing the feed liquid descent rate, store the feed liquid in advance at the same time and emit through the shower nozzle simultaneously, make the feed liquid enter the pipeline more evenly, the feed liquid can be in the pipeline evenly at the same time, the problem of uneven liquid distribution of the falling film evaporator is solved;

2. make the circulation of air through the air hose, improve complete liquid leakage efficiency, the coolant liquid passes through the drain pipe and enters into the cooling tank in, makes coolant liquid reuse through the circulating pump, improves the utilization leak rate of coolant liquid, reduces the cost of using the coolant liquid, can automatic cycle, the collection coolant liquid time of using manpower sparingly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic perspective view of the mobile box of the present invention.

Fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

Fig. 4 is an enlarged schematic view of the structure at B in fig. 1 according to the present invention.

The reference signs are: 1. an evaporator case; 2. a first support column; 3. a first baffle plate; 4. a second baffle; 5. a connecting pipe; 6. a feeding pipe; 7. moving the cartridge; 8. a telescopic pipe; 9. a hydraulic lever; 10. a fixing plate; 11. a buffer plate; 12. a leak hole; 13. a discharging pipe; 14. a spray head; 15. a discharge pipe; 16. a discharging box; 17. an air tube; 18. a second support column; 19. a chute; 20. a slider; 21. a liquid outlet pipe; 22. a cooling tank; 23. a circulation pump; 24. a pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The falling film evaporator shown in the attached figures 1-4 comprises an evaporator tank body 1, wherein a first support column 2 is arranged at the bottom of the evaporator tank body 1, a first baffle 3 is arranged inside the evaporator tank body 1, a second baffle 4 is arranged at the bottom of the first baffle 3, a connecting pipe 5 is arranged between the first baffle 3 and the second baffle 4, a feeding pipe 6 is arranged at the top of the evaporator tank body 1, and a uniform dispersion mechanism is arranged between the connecting pipe 5 and the feeding pipe 6;

the uniform dispersion mechanism comprises a moving box 7, an extension pipe 8 is arranged between the moving box 7 and a feeding pipe 6, a hydraulic rod 9 is arranged at the top of the moving box 7, a fixed plate 10 is arranged at the joint of the hydraulic rod 9 and the inner wall of the evaporator box body 1, a buffer plate 11 is arranged inside the moving box 7, a leak hole 12 is arranged on the surface of the top of the buffer plate 11, a feeding pipe 13 is arranged at the bottom of the moving box 7, and a spray head 14 is arranged at the bottom of the feeding pipe 13;

a discharge pipe 15 is arranged on one side of the evaporator box body 1, a discharge box 16 is arranged on one side of the discharge pipe 15, an air pipe 17 is arranged on one side of the discharge box 16, and a second support column 18 is arranged at the bottom of the discharge box 16.

As shown in fig. 1-4, the movable box 7 is disposed inside the evaporator box 1, the bottom of the telescopic tube 8 penetrates through the movable box 7 and extends into the movable box 7, two hydraulic rods 9 are provided, the number of the leakage holes 12, the number of the discharging tubes 13 and the number of the nozzles 14 are both set to be multiple, the positions of the nozzles 14 correspond to the tops of the connecting tubes 5 one by one, the tops of the connecting tubes 5 penetrate through the first baffle 3 and extend to the tops of the first baffles 3, the bottoms of the connecting tubes 5 penetrate through the second baffle 4 and extend to the bottoms of the second baffles 4, the tops of the discharging tubes 13 penetrate through the movable box 7 and extend into the movable box 7, one side of the inner wall of the evaporator box 1 is provided with a sliding groove 19, the two sides of the movable box 7 are both provided with sliders 20, the sliding groove 19 is slidably connected with the sliders 20, the moving process of the movable box 7 is limited, and the nozzles 14 can accurately enter into the connecting tubes 5.

As shown in fig. 1, a liquid outlet pipe 21 is arranged on one side of the evaporator case 1, a cooling tank 22 is arranged on one side of the liquid outlet pipe 21, and a circulating pump 23 is arranged on the top of the cooling tank 22. A pipeline 24 is arranged between the cooling tank 22 and the circulating pump 23, and one end of the pipeline 24 penetrates through the evaporator tank 1 and extends into the evaporator tank 1 to automatically circulate the cooling liquid.

The working principle of the utility model is as follows: when the utility model is used, firstly, feed liquid is injected through the feed pipe 6 at the top of the evaporator box body 1, then the feed liquid enters the moving box 7 through the telescopic pipe 8, then the buffer plate 11 in the moving box 7 is used for buffering, then the feed liquid leaks into the space between the moving box 7 and the buffer plate 11 through the leak hole 12 on the top surface of the buffer plate 11, so that the falling speed of the feed liquid is reduced, then the feed liquid can leak into the blanking pipe 13, at the moment, the spray head 14 at the bottom of the blanking pipe 13 is closed until the feed liquid in the blanking pipe 13 is filled, simultaneously, the liquid level of the feed liquid is higher than that of the blanking pipe 13, then the hydraulic rod 9 at the bottom of the fixed plate 10 is opened, so that the hydraulic rod 9 is extended, the moving box 7 is driven to move downwards, because the positions of the spray head 14 and the connecting pipe 5 are in one-to-one correspondence, the spray head extends into the connecting pipe 5, then, the feed liquid enters the bottom of the evaporator box body 1 through the connecting pipe 5 by opening the spray head 14, meanwhile, cooling liquid is introduced through the pipeline 24 to exchange heat with the material liquid in the connecting pipe 5, and the material liquid after heat exchange enters the discharging box 16 through the discharging pipe 15, so that complete liquid is formed;

can prevent through setting up air pipe 17 that the air from not circulating to lead to complete liquid can't to spill, improve complete liquid efficiency of leaking, the coolant liquid passes through drain pipe 21 and reenters cooling tank 22 in, makes the coolant liquid pass through pipeline 24 and enters into evaporator box 1 through opening circulating pump 23 afterwards, reuse.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiment of the utility model, only the structures related to the disclosed embodiment are related, other structures can refer to common design, and the same embodiment and different embodiments of the utility model can be combined mutually under the condition of no conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The falling film evaporator comprises an evaporator box body (1), and is characterized in that: the evaporator is characterized in that a first supporting column (2) is arranged at the bottom of the evaporator box body (1), a first baffle (3) is arranged inside the evaporator box body (1), a second baffle (4) is arranged at the bottom of the first baffle (3), a connecting pipe (5) is arranged between the first baffle (3) and the second baffle (4), a feeding pipe (6) is arranged at the top of the evaporator box body (1), and a uniform dispersion mechanism is arranged between the connecting pipe (5) and the feeding pipe (6);

the uniform dispersion mechanism comprises a moving box (7), a telescopic pipe (8) is arranged between the moving box (7) and a feeding pipe (6), a hydraulic rod (9) is arranged at the top of the moving box (7), a fixed plate (10) is arranged at the joint of the hydraulic rod (9) and the inner wall of the evaporator box body (1), a buffer plate (11) is arranged inside the moving box (7), a leak hole (12) is formed in the surface of the top of the buffer plate (11), a discharging pipe (13) is arranged at the bottom of the moving box (7), and a spray head (14) is arranged at the bottom of the discharging pipe (13);

evaporator box (1) one side is provided with discharging pipe (15), discharging pipe (15) one side is provided with ejection of compact case (16), ejection of compact case (16) one side is provided with air hose (17), ejection of compact case (16) bottom is provided with second support column (18).

2. A falling film evaporator according to claim 1 wherein: the movable box (7) is arranged inside the evaporator box body (1), the bottom of the telescopic pipe (8) penetrates through the movable box (7) and extends into the movable box (7), and two hydraulic rods (9) are arranged.

3. A falling film evaporator according to claim 1 wherein: the quantity of small opening (12), unloading pipe (13) and shower nozzle (14) all sets up to a plurality ofly, the position and connecting pipe (5) top one-to-one of shower nozzle (14), connecting pipe (5) top is run through first baffle (3) and is extended to first baffle (3) top, connecting pipe (5) bottom is run through second baffle (4) and is extended to second baffle (4) bottom.

4. A falling film evaporator according to claim 1 wherein: the top of the discharging pipe (13) penetrates through the movable box (7) and extends to the interior of the movable box (7), a sliding groove (19) is formed in one side of the inner wall of the evaporator box body (1), sliding blocks (20) are arranged on two sides of the movable box (7), and the sliding groove (19) is connected with the sliding blocks (20) in a sliding mode.

5. A falling film evaporator according to claim 1 wherein: evaporator box (1) one side is provided with drain pipe (21), drain pipe (21) one side is provided with cooling tank (22), cooling tank (22) top is provided with circulating pump (23).

6. A falling film evaporator according to claim 5 wherein: be provided with pipeline (24) between cooler bin (22) and circulating pump (23), pipeline (24) one end runs through evaporimeter box (1) and extends to inside the evaporimeter box (1).