Double-effect falling film evaporator

Abstract

The utility model provides a double-effect falling film evaporator, which relates to the field of falling film evaporation and comprises a first heater, a first connecting pipe fixedly mounted on one side of the first heater, a first separator fixedly mounted at the other end of the first connecting pipe, and a connecting column fixedly mounted at the top of the first separator. And a second connecting pipe is fixedly installed at the top of the connecting column, a second heater is fixedly installed at the other end of the second connecting pipe, a third connecting pipe is fixedly installed on the surface of the second heater, and a second separator is fixedly installed at the other end of the third connecting pipe. According to the gas-liquid separation device, steam generated by heating and evaporating materials in the heater I enters the heater II through the connecting column and the connecting pipe II to be reused, and the filtering block in the connecting column is made of a ceramic filtering medium, so that the device realizes high-precision gas-liquid separation, liquid is better blocked, and the gas-liquid separation efficiency is improved. Liquid in the first separator drives a baffle to enter a movable groove by pulling a sliding block, and the liquid in the first separator is observed through an observation plate.

Description

Technical Field

[0001] The utility model relates to the technical field of falling film evaporation, in particular to a double-effect falling film evaporator. Background Art

[0002] The double-effect falling film evaporator is applicable to low-temperature continuous evaporation and concentration in industries such as food, pharmaceutical, chemical, biological, environmental protection, and waste liquid recovery. The double-effect falling film evaporator has the main characteristics of high heat transfer efficiency and short heating time of materials, so it is particularly suitable for heat-sensitive and foaming materials.

[0003] In the prior art, the steam and liquid generated during the operation of the double-effect falling film evaporator are separated in the separator. The liquid remains inside the separator, and the steam enters the second heater. However, some liquid droplets are entrained in the steam and enter the second heater, making it difficult to maintain the quality of the steam. Moreover, the entire device is in a sealed state, and it is difficult to observe the liquid situation inside the separator from the outside, making the operation inconvenient. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a double-effect falling film evaporator to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A double-effect falling film evaporator, comprising: a first heater, a first connecting pipe is fixedly installed on one side of the first heater, the other end of the first connecting pipe is fixedly installed with a first separator, a connecting column is fixedly installed on the top of the first separator, a second connecting pipe is fixedly installed on the top of the connecting column, the other end of the second connecting pipe is fixedly installed with a second heater, a third connecting pipe is fixedly installed on the surface of the second heater, the other end of the third connecting pipe is fixedly installed with a second separator, a fourth connecting pipe is fixedly installed on the top of the second separator, and the other end of the fourth connecting pipe is fixedly installed with a condenser.

[0006] As a preferred embodiment, a first groove is opened on the surface of the first separator, a second groove is opened above the first groove, a baffle is installed on the inner wall of the first groove, one end of the top of the baffle is fixedly installed with a slider, the surface of the slider moves on the inner wall of the second groove, a movable groove is opened on one side of the inner wall of the first groove, the surface of the baffle moves inside the movable groove, and an observation plate is fixedly installed on the inner wall of the first groove.

[0007] As a preferred embodiment, a filtering block is fixedly installed on the inner wall of the connecting column.

[0008] As a preferred embodiment, a first heating pipe is fixedly installed on one side of the first heater, the other end of the first heating pipe is fixedly installed with a heat pump, the other end of the heat pump is fixedly installed with a second heating pipe, and the other end of the second heating pipe is fixedly installed on the surface of the connecting column.

[0009] As a preferred embodiment, a first discharge pipe is fixedly installed at the bottom of the first heater, one end of the first discharge pipe is fixedly installed at the bottom of the first separator, the other end of the first discharge pipe is fixedly installed with a circulation pump, a material transfer pipe is fixedly installed on the surface of the circulation pump, and the other end of the material transfer pipe is fixedly installed at the top of the second heater.

[0010] As a preferred embodiment, a second discharge pipe is fixedly installed at the bottom of the second heater, one end of the second discharge pipe is fixedly installed at the bottom of the second separator, and the other end of the second discharge pipe is fixedly installed with a discharge pump.

[0011] As a preferred embodiment, a first liquid inlet is fixedly installed at the top of the first heater, a second liquid inlet is fixedly installed at the top of the second heater, and a liquid outlet is fixedly installed at the bottom of the condenser.

[0012] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0013] 1. In the present utility model, the steam generated by heating and evaporating the material inside the first heater enters the first separator. Through the connecting column and the second connecting pipe at the top of the first separator, it enters the inside of the second heater. According to the fact that the filtering block fixedly installed on the inner wall of the connecting column is made of ceramic filtering medium, which has good chemical stability and high temperature resistance, and the pores are uniform and fine, it can achieve high-precision gas-liquid separation, better guarantee the quality of the steam, better block the liquid, and make the device more perfect.

[0014] 2. In the present utility model, after the steam inside the first heater enters the first separator, part of it liquefies and remains at the bottom of the first separator. By pulling the slider, the baffle moves into the inside of the movable groove, and the liquid condition inside the first separator is viewed through the observation plate fixedly installed on the inner wall of the first groove, making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side view of a double-effect falling film evaporator provided by the present utility model;

[0016] Figure 2 It is a side view of the separator of a double-effect falling film evaporator provided by the present utility model;

[0017] Figure 3 It is a sectional view of the separator of a double-effect falling film evaporator provided by the present utility model;

[0018] Figure 4 Cutting diagram of the connecting column of a double-effect falling-film evaporator provided by the present utility model.

[0019] Legend:

[0020] 1. First heater; 101. First liquid inlet; 2. First connecting pipe; 3. First separator; 301. First groove; 302. Second groove; 303. Baffle; 304. Slide block; 305. Movable groove; 306. Observation plate; 4. Connecting column; 401. Filter block; 5. Second connecting pipe; 6. Second heater; 601. Second liquid inlet; 7. Third connecting pipe; 8. Second separator; 9. Fourth connecting pipe; 10. Condenser; 1001. Liquid outlet; 11. First heating pipe; 12. Thermal compression pump; 13. Second heating pipe; 14. Circulation pump; 15. Discharge pump; 16. First discharge pipe; 17. Second discharge pipe; 18. Material transfer pipe. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: a double-effect falling-film evaporator, including: a first heater 1, a first connecting pipe 2 is fixedly installed on one side of the first heater 1, the other end of the first connecting pipe 2 is fixedly installed with a first separator 3, a connecting column 4 is fixedly installed on the top of the first separator 3, a second connecting pipe 5 is fixedly installed on the top of the connecting column 4, the other end of the second connecting pipe 5 is fixedly installed with a second heater 6, a third connecting pipe 7 is fixedly installed on the surface of the second heater 6, the other end of the third connecting pipe 7 is fixedly installed with a second separator 8, a fourth connecting pipe 9 is fixedly installed on the top of the second separator 8, and the other end of the fourth connecting pipe 9 is fixedly installed with a condenser 10.

[0023] Specifically: the preheated material is heated inside the first heater 1, and the material flows downward along the inner wall under the action of gravity while being heated and evaporated. The generated steam enters the first separator 3, and then enters the second heater 6 through the connecting column 4 and the second connecting pipe 5 for reuse as a heating source. Finally, the generated secondary steam enters the condenser 10 for cooling and recovery, making the device more perfect.

[0024] In one embodiment, a groove 301 is formed on the surface of the first separator 3, and a groove 302 is formed above the groove 301. A baffle 303 is installed on the inner wall of the groove 301. One end of the top of the baffle 303 is fixedly installed with a slider 304. The surface of the slider 304 moves on the inner wall of the groove 302. An activity groove 305 is formed on one side of the inner wall of the groove 301. The surface of the baffle 303 moves inside the activity groove 305. An observation plate 306 is fixedly installed on the inner wall of the groove 301.

[0025] Specifically: During the use of the device, steam enters the interior of the first separator 3 through the first connecting pipe 2. Part of the steam will liquefy and remain at the bottom of the inner wall of the first separator 3. By pushing the slider 304, the baffle 303 fixedly installed at its bottom moves into the activity groove 305, exposing the observation plate 306, enabling a more accurate view of the liquid situation inside the first separator 3 and making the operation of the entire device more convenient.

[0026] In one embodiment, a filter block 401 is fixedly installed on the inner wall of the connecting column 4.

[0027] Specifically: Since the connecting column 4 is made of a ceramic filter medium, it has good chemical stability and high-temperature resistance, with uniform and fine pores, capable of achieving high-precision gas-liquid separation, enabling the steam entering the interior of the first separator 3 to better pass through the second connecting pipe 5 and enter the interior of the second heater 6, and being better reused as a heat source, thus better ensuring the quality of the steam.

[0028] In one embodiment, a first heating pipe 11 is fixedly installed on one side of the first heater 1. The other end of the first heating pipe 11 is fixedly installed with a heat pump 12. The other end of the heat pump 12 is fixedly installed with a second heating pipe 13. The other end of the second heating pipe 13 is fixedly installed on the surface of the connecting column 4.

[0029] Specifically: By starting the heat pump 12 through an external controller, the heat pump 12 heats the interior of the first heater 1 through the first heating pipe 11, enabling the better use of the device. At the same time, the heat pump 12 heats the connecting column 4 through the second heating pipe 13, enabling the temperature of the steam in the first separator 3 to remain at the required temperature after passing through the connecting column 4 and enter the interior of the second heater 6, making the entire device more perfect.

[0030] In one embodiment, a first discharge pipe 16 is fixedly installed at the bottom of the first heater 1. One end of the first discharge pipe 16 is fixedly installed at the bottom of the first separator 3. The other end of the first discharge pipe 16 is fixedly installed with a circulation pump 14. A material transfer pipe 18 is fixedly installed on the surface of the circulation pump 14. The other end of the material transfer pipe 18 is fixedly installed at the top of the second heater 6.

[0031] Specifically: By starting the circulation pump 14, the liquid inside the first heater 1 and the first separator 3 enters the circulation pump 14 through the first discharge pipe 16, and then enters the inside of the second heater 6 through the material transfer pipe 18, enabling the generated liquid to be reused and making the device more perfect.

[0032] In one embodiment, a second discharge pipe 17 is fixedly installed at the bottom of the second heater 6. One end of the second discharge pipe 17 is fixedly installed at the bottom of the second separator 8, and the other end of the second discharge pipe 17 is fixedly installed with a discharge pump 15.

[0033] Specifically: By starting the discharge pump 15, the liquid inside the second heater 6 and the second separator 8 is discharged, making the device more perfect.

[0034] In one embodiment, a first liquid inlet 101 is fixedly installed at the top of the first heater 1, a second liquid inlet 601 is fixedly installed at the top of the second heater 6, and a liquid outlet 1001 is fixedly installed at the bottom of the condenser 10.

[0035] Specifically: Materials are added into the first heater 1 through the first liquid inlet 101, materials are added into the second heater 6 through the second liquid inlet 601, the secondary steam is cooled by the condenser 10, and recovered through the liquid outlet 1001, making the device more perfect.

[0036] Working principle: When the device starts to be used, materials are added into the interior of Heater 1 through Liquid Inlet 101. The hot press pump 12 is started. The hot press pump 12 heats the interior of Heater 1 through Heating Pipe 11. The materials flow downward along the inner wall under the action of gravity, and are heated and evaporated at the same time. The liquid remains at the bottom of the inner wall of Heater 1. The generated steam enters the interior of Separator 1. Part of the steam liquefies and remains at the bottom of the inner wall of Separator 1. The steam enters the interior of Heater 2 through Connecting Column 4 at the top of Separator 1 and Connecting Pipe 2 5. According to the fact that the filter block 401 fixedly installed inside Connecting Column 4 is made of ceramic filter medium, which has good chemical stability and high temperature resistance, with uniform and fine pores, it can achieve high-precision gas-liquid separation, enabling the steam entering the interior of Separator 1 to better enter the interior of Heater 2 through Connecting Pipe 2 5. At the same time, the hot press pump 12 heats Connecting Column 4 through Heating Pipe 2 13, enabling the steam in Separator 1 to enter the interior of Heater 2 at the required temperature, making the whole device more perfect, so that the steam can be better reused as a heating source, and thus the quality of the steam can be better guaranteed; when part of the steam in Separator 1 liquefies, it remains at the bottom of the inner wall of Separator 1. By pushing the slider 304, the baffle 303 fixedly installed at its bottom moves into the movable slot 305, exposing the observation plate 306, so that the liquid condition inside Separator 1 can be seen more accurately, making the whole device more convenient to operate.

[0037] The above is only the preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A double-effect falling film evaporator, characterized in that: include: A heater (1), a connecting pipe (2) is fixedly mounted on one side of the heater (1), a separator (3) is fixedly mounted on the other end of the connecting pipe (2), a connecting column (4) is fixedly mounted on the top of the separator (3), a connecting pipe (5) is fixedly mounted on the top of the connecting column (4), a heater (6) is fixedly mounted on the other end of the connecting pipe (5), a connecting pipe (3) is fixedly mounted on the surface of the heater (6), a separator (8) is fixedly mounted on the other end of the connecting pipe (7), a connecting pipe (4) is fixedly mounted on the top of the separator (8), and a condenser (10) is fixedly mounted on the other end of the connecting pipe (9).

2. A double-effect falling film evaporator according to claim 1, characterized in that: The surface of the separator one (3) is provided with a groove one (301), and a groove two (302) is provided above the groove one (301). A baffle (303) is installed on the inner wall of the groove one (301), and a slider (304) is fixedly installed on one end of the top of the baffle (303). The surface of the slider (304) moves on the inner wall of the groove two (302). A movable groove (305) is provided on one side of the inner wall of the groove one (301), and the surface of the baffle (303) moves inside the movable groove (305). An observation plate (306) is fixedly installed on the inner wall of the groove one (301).

3. A double-effect falling film evaporator according to claim 1, characterized in that: A filter block (401) is fixedly mounted on the inner wall of the connecting column (4).

4. A double-effect falling film evaporator according to claim 1, characterized in that: A heating tube 1 (11) is fixedly mounted on one side of the heater 1 (1), a heat press pump (12) is fixedly mounted on the other end of the heating tube 1 (11), a heating tube 2 (13) is fixedly mounted on the other end of the heat press pump (12), and the other end of the heating tube 2 (13) is fixedly mounted on the surface of the connecting column (4).

5. A double-effect falling film evaporator according to claim 1, characterized in that: A discharge pipe (16) is fixedly mounted on the bottom of the heater (1), one end of which is fixedly mounted on the bottom of the separator (3), a circulation pump (14) is fixedly mounted on the other end of the discharge pipe (16), a transfer pipe (18) is fixedly mounted on the surface of the circulation pump (14), and the other end of the transfer pipe (18) is fixedly mounted on the top of the heater (6).

6. A double-effect falling film evaporator according to claim 1, characterized in that: A discharge pipe 2 (17) is fixedly mounted at the bottom of the second heater (6), one end of the discharge pipe 2 (17) is fixedly mounted at the bottom of the second separator (8), and a discharge pump (15) is fixedly mounted at the other end of the discharge pipe 2 (17).

7. A double-effect falling film evaporator according to claim 1, characterized in that: The top of the heater one (1) is fixedly provided with a liquid inlet one (101), the top of the heater two (6) is fixedly provided with a liquid inlet two (601), and the bottom of the condenser (10) is fixedly provided with a liquid outlet (1001).

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