Falling film evaporator

Abstract

The utility model relates to the technical field of evaporators, in particular to a falling film evaporator which comprises supporting legs fixedly connected to the lower portion of an evaporator body, a stirrer fixedly connected to the upper portions of the supporting legs, a stirring mechanism fixedly connected to the interior of the stirrer and a spraying mechanism. The spraying mechanism is fixedly connected to the interior of the evaporator body and is provided with a stirring mechanism, the purpose of uniformly mixing liquid is achieved through stirring blades and a stirrer in the structure, a motor controls a first roller to rotate, a second roller is driven by an external belt to start to rotate, and therefore the spraying efficiency is improved. The central shaft can drive the stirring blades to uniformly stir a mixed solution, so that the liquid is more fully mixed, the effects of fully mixing the liquid and avoiding the temperature gradient in the evaporator are achieved, the situation that the liquid is excessively evaporated and the other part is insufficiently evaporated is avoided, the pressure in the evaporator is uniform, and the evaporation efficiency is improved. The service life of equipment is prolonged.

Description

Technical Field

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

[0002] Falling film evaporator is a commonly used evaporation equipment in chemical, food, pharmaceutical and other industries. Its main working principle is that inside the evaporator, the feed liquid flows slowly along the heated surface to form a thin film and gradually descends under the action of gravity. In this process, the solvent in the feed liquid evaporates, thereby achieving the concentration of the solution. The main features of the falling film evaporator are: high efficiency and energy saving: Since the feed liquid flows in the evaporator in the form of a thin film, its surface area is large, and the contact area with the heat medium is also large, which makes the evaporation efficiency higher and the thermal energy utilization rate better. The operation is stable: the falling film evaporator can realize automatic control, easy operation, and small fluctuations during operation. The structure is simple: compared with other types of evaporators, the structure of the falling film evaporator is simpler, easy to maintain and clean, and has strong adaptability: the falling film evaporator can adapt to various different feed liquids, has lower requirements on the properties of the feed liquid, and has excellent quality: using falling film evaporator Evaporation with a film evaporator can produce relatively high-quality evaporation products, such as more uniform solution concentration and better product quality. Falling film evaporators have been widely used in my country. They are not only widely used in chemical, food, pharmaceutical and other industries, but also gradually used in environmental protection, new energy and other fields. With the advancement of science and technology and changes in market demand, the performance and functions of falling film evaporators are also constantly being optimized and improved, providing strong support for the production and development of various industries. In the prior art, the evaporator needs to evaporate a variety of liquids, each of which has different properties. If the liquids cannot be mixed, the evaporation results will be affected. Since the liquids cannot be fully mixed, a temperature gradient will appear inside the evaporator, which will cause part of the liquid to evaporate excessively while the other part will not evaporate enough, and uneven evaporation will lead to uneven pressure inside the evaporator, which will damage the equipment in the long run. Utility Model Content

[0003] The purpose of the utility model is to provide a falling film evaporator to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A falling film evaporator comprises an evaporator body and further comprises:

[0006] A support leg, the support leg being fixedly connected to the bottom of the evaporator body;

[0007] A stirrer, the stirrer is fixedly connected above the support foot;

[0008] A stirring mechanism, wherein the stirring mechanism is fixedly connected to the inside of the stirrer;

[0009] The spraying mechanism is fixedly connected to the inside of the evaporator body.

[0010] As a preferred solution of the utility model, a fixed block is fixedly connected to the top of the agitator;

[0011] A motor, wherein the motor is fixedly connected to the interior of the fixed block;

[0012] A first roller is fixedly connected to an output end of the motor.

[0013] As a preferred solution of the utility model, a belt is arranged outside the first roller;

[0014] The second roller is connected with the belt transmission, the motor controls the first roller to rotate, and the second roller is driven to rotate through the external belt.

[0015] As a preferred solution of the utility model, a central shaft, wherein the central shaft is fixedly connected to the second roller;

[0016] The stirring blades are fixedly connected to both sides of the central axis, and the central axis can drive the stirring blades to evenly stir the mixed solution, so that the liquid is mixed more fully.

[0017] As a preferred solution of the utility model, a liquid pump, wherein the liquid pump is fixedly connected to the bottom of the agitator;

[0018] An infusion tube, wherein the infusion tube is fixedly connected to a liquid pump, and then the liquid pump is turned on, and the mixed liquid is transported into the infusion tube;

[0019] The nozzle is fixedly connected to the lower part of the infusion tube, and finally sprayed into the evaporator body through the nozzle.

[0020] As a preferred solution of the utility model, a heating wire is fixedly connected to the inner wall of the evaporator body, and the heating wire on the inner wall of the evaporator body emits heat, thereby increasing the temperature of the entire device and facilitating the evaporation of the liquid;

[0021] The nickel-based high-temperature alloy layer is fixedly connected to one side of the heating wire. The outside of the heating wire is provided with the nickel-based high-temperature alloy layer, and the nickel-based high-temperature alloy layer has good corrosion resistance and high temperature resistance.

[0022] As a preferred solution of the utility model, a second feed inlet is fixedly connected to one side above the stirrer;

[0023] A first feed inlet, the other side above the stirrer is fixedly connected with the first feed inlet, the raw material liquid to be evaporated is poured into the stirrer from the first feed inlet and the second feed inlet respectively, and then the stirring mechanism is started;

[0024] A steam pipe, a steam pipe is fixedly connected to one side above the evaporator body;

[0025] A discharge port is fixedly connected to the other side of the evaporator body, and the evaporated gas is discharged through the steam pipe, and the remaining liquid is finally discharged from the discharge port for collection.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] In the utility model, a stirring mechanism is provided, and the purpose of evenly mixing the liquid is achieved through the stirring blades and the stirrer in the structure. The motor controls the rotation of the first roller, and the second roller is driven to rotate by the external belt. Therefore, the central axis can drive the stirring blades to evenly stir the mixed solution, so that the liquid is mixed more fully, which plays a role in allowing the liquid to be fully mixed and avoiding the temperature gradient inside the evaporator. The situation that the liquid evaporates excessively while the other part evaporates insufficiently will not occur. The pressure inside the evaporator is uniform, and the life of the equipment is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0029] Figure 2 It is a schematic diagram of the overall front view structure of the utility model;

[0030] Figure 3 It is a schematic diagram of the overall side view structure of the utility model;

[0031] Figure 4 It is a schematic diagram of the overall internal structure of the utility model.

[0032] In the figure: 1. evaporator body; 2. first feed port; 3. fixing block; 4. second feed port; 5. agitator; 6. support leg; 7. discharge port; 8. steam pipe; 9. nickel-based high-temperature alloy layer; 10. heating wire; 11. infusion tube; 12. nozzle; 13. first roller; 14. motor; 15. second roller; 16. belt; 17. stirring blade; 18. central axis; 19. liquid pump. DETAILED DESCRIPTION

[0033] In order to make the technical means, objectives and effects of the present invention easy to understand, the embodiments of the present invention are described in detail below with reference to specific drawings.

[0034] It should be noted that all terms used in the present invention for directional and positional indications, such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "top", "lower", "lateral", "longitudinal", "center", etc., are only used to explain the relative positional relationship and connection status between the components in a certain state (as shown in the accompanying drawings), and are only for the convenience of describing the present invention, rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] See also Figure 1-4 , the utility model provides a technical solution:

[0038] A falling film evaporator comprises an evaporator body 1, and further comprises:

[0039] A support leg 6, the support leg 6 is fixedly connected to the bottom of the evaporator body 1;

[0040] A stirrer 5, the stirrer 5 is fixedly connected to the upper part of the support leg 6;

[0041] A stirring mechanism, the stirring mechanism is fixedly connected to the inside of the stirrer 5;

[0042] The spraying mechanism is fixedly connected to the inside of the evaporator body 1 .

[0043] As an example of the present utility model, a fixed block 3 is fixedly connected above the agitator 5;

[0044] The motor 14 is fixedly connected to the inside of the fixed block 3;

[0045] The first roller 13 is fixedly connected to the output end of the motor 14 .

[0046] As an example of the present invention, the belt 16 is disposed outside the first roller 13;

[0047] The second roller 15 is connected to the belt 16 by transmission. The motor 14 controls the first roller 13 to rotate, and the second roller 15 is driven to rotate through the external belt 16.

[0048] As an example of the present utility model, the central shaft 18 is fixedly connected to the second roller 15;

[0049] The stirring blades 17 are fixedly connected to both sides of the central shaft 18. The central shaft 18 can drive the stirring blades 17 to evenly stir the mixed solution, so that the liquid is mixed more fully.

[0050] As an example of the present invention, a liquid pump 19 is fixedly connected to the bottom of the agitator 5;

[0051] The infusion tube 11 is fixedly connected to the liquid pump 19, and then the liquid pump 19 is turned on, and the mixed liquid is transported into the infusion tube 11;

[0052] The nozzle 12 is fixedly connected to the lower part of the liquid infusion tube 11 , and finally sprayed into the evaporator body 1 through the nozzle 12 .

[0053] As an example of the present invention, the heating wire 10 is fixedly connected to the inner wall of the evaporator body 1. The heating wire 10 on the inner wall of the evaporator body 1 emits heat, thereby increasing the temperature of the entire device and facilitating the evaporation of the liquid.

[0054] The nickel-based high-temperature alloy layer 9 is fixedly connected to one side of the heating wire 10. The nickel-based high-temperature alloy layer 9 is arranged outside the heating wire 10. The nickel-based high-temperature alloy layer 9 has good corrosion resistance and high temperature resistance.

[0055] As an example of the present utility model, the second feed inlet 4 is fixedly connected to one side above the stirrer 5;

[0056] The first feed port 2 is fixedly connected to the other side above the stirrer 5. The raw material liquid to be evaporated is poured into the stirrer 5 from the first feed port 2 and the second feed port 4 respectively, and then the stirring mechanism is started;

[0057] A steam pipe 8 is fixedly connected to one side above the evaporator body 1;

[0058] A discharge port 7 is fixedly connected to the other side of the evaporator body 1 , and the evaporated gas is discharged through a steam pipe 8 , and the remaining liquid is finally discharged from the discharge port 7 for collection.

[0059] Working principle: When in use, the raw material liquid to be evaporated is poured into the agitator 5 from the first feed port 2 and the second feed port 4 respectively, and then the stirring mechanism is started, wherein the motor 14 controls the rotation of the first roller 13, and the second roller 15 is driven to rotate through the external belt 16. Therefore, the central axis 18 can drive the stirring blade 17 to evenly stir the mixed solution, so that the liquid is mixed more fully, and then the liquid pump 19 is turned on, and the mixed liquid is transported to the infusion tube 11, and finally sprayed into the evaporator body 1 through the nozzle 12. The heating wire 10 on the inner wall of the evaporator body 1 dissipates heat, which increases the temperature of the entire equipment and facilitates the evaporation of the liquid. The outside of the heating wire 10 is provided with a nickel-based high-temperature alloy layer 9, which has good corrosion resistance and high temperature resistance. The evaporated gas is discharged through the steam pipe 8, and the remaining liquid is finally discharged from the discharge port 7 for collection.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A falling film evaporator, comprising an evaporator body (1), characterized in that: Also includes: A support foot (6), the support foot (6) being fixedly connected to the bottom of the evaporator body (1); A stirrer (5), wherein the stirrer (5) is fixedly connected to the upper part of the support foot (6); A stirring mechanism, the stirring mechanism being fixedly connected to the interior of the stirrer (5); A spraying mechanism, wherein the spraying mechanism is fixedly connected to the inside of the evaporator body (1).

2. A falling film evaporator according to claim 1, characterized in that: The stirring mechanism comprises: A fixed block (3), wherein the fixed block (3) is fixedly connected to the top of the stirrer (5); A motor (14), wherein the motor (14) is fixedly connected to the interior of the fixed block (3); A first roller (13), wherein the first roller (13) is fixedly connected to an output end of the motor (14).

3. A falling film evaporator according to claim 1, characterized in that: The stirring mechanism comprises: a belt (16), wherein the belt (16) is arranged outside the first roller (13); A second roller (15), the second roller (15) is transmission-connected to a belt (16).

4. A falling film evaporator according to claim 1, characterized in that: The stirring mechanism comprises: A central shaft (18), wherein the central shaft (18) is fixedly connected to the second roller (15); A stirring blade (17), wherein the stirring blade (17) is fixedly connected to both sides of the central shaft (18).

5. A falling film evaporator according to claim 1, characterized in that: The spraying mechanism comprises: A liquid pump (19), wherein the liquid pump (19) is fixedly connected to the bottom of the agitator (5); An infusion tube (11), wherein the infusion tube (11) is fixedly connected to a liquid pump (19); A nozzle (12), wherein the nozzle (12) is fixedly connected to the bottom of the infusion tube (11).

6. A falling film evaporator according to claim 1, characterized in that: A heating wire (10), the inner wall of the evaporator body (1) being fixedly connected with the heating wire (10); A nickel-based high-temperature alloy layer (9), wherein the nickel-based high-temperature alloy layer (9) is fixedly connected to one side of the heating wire (10).

7. A falling film evaporator according to claim 1, characterized in that: A second feed inlet (4), the second feed inlet (4) being fixedly connected to one side above the stirrer (5); A first feed inlet (2), the other side above the stirrer (5) being fixedly connected to the first feed inlet (2); A steam pipe (8), a steam pipe (8) being fixedly connected to one side above the evaporator body (1); A discharge port (7), the other side of the evaporator body (1) is fixedly connected with the discharge port (7).

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