Horizontal evaporation treatment equipment for alkali metal salt

Abstract

The utility model provides horizontal evaporation treatment equipment for alkali metal salt, which comprises a rack, an evaporation cylinder, a stirring cylinder and a rotary driving component, a thermal interlayer is arranged on the peripheral wall of the evaporation cylinder, the stirring cylinder is rotatably connected in the evaporation cylinder, an evaporation cavity is formed between the stirring cylinder and the evaporation cylinder, a feeding pipe group is arranged on the side part of the evaporation cylinder, and a discharging pipe is arranged at the bottom of the evaporation cylinder. Spiral blades are wound on the peripheral wall of the stirring barrel, a collecting pipe group is arranged at the top of the evaporation barrel, an auxiliary heating piece is arranged in the stirring barrel, and the outer end of the stirring barrel is connected with a rotary driving assembly. According to the horizontal evaporation treatment equipment for the alkali metal salt, the heat interlayer on the evaporation barrel is used for evaporating and heating feed liquid, meanwhile, the auxiliary heating piece is used for heating the stirring barrel, the temperature rising speed of the feed liquid is effectively increased, the feed liquid can be evenly dispersed on the peripheral wall of the evaporation barrel due to the arrangement of the spiral blades, and the heat efficiency of the feed liquid is improved. The distribution uniformity of the feed liquid is improved, and the treatment quality of the feed liquid is convenient to guarantee.

Description

Technical Field

[0001] The utility model belongs to the technical field of thin film evaporators, and more specifically relates to horizontal evaporation processing equipment for alkali metal salts. Background Art

[0002] In chemical production, it is often necessary to evaporate alkali metal salts such as potassium bis(fluorosulfonyl)imide, lithium bis(fluorosulfonyl)imide, and silver bis(fluorosulfonyl)imide. Existing alkali metal salts are generally evaporated by vertical evaporators, and the feed liquid is difficult to be evenly distributed inside the evaporator, so the evaporation efficiency is relatively low.

[0003] Although horizontal evaporators have appeared in the prior art, heat exchange is generally performed only through the interlayer on the cylinder, and the evaporation efficiency of the alkali metal salt is still low. In addition, the evaporation is often incomplete, which affects the processing quality of the alkali metal salt. Utility Model Content

[0004] The utility model aims to provide a horizontal evaporation treatment device for alkali metal salts, which can evenly disperse the liquid feed on the inner peripheral wall of an evaporation cylinder, thereby helping to improve the evaporation efficiency of the liquid feed and ensure the processing quality of the alkali metal salts.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a horizontal evaporation processing equipment for alkali metal salts, including a frame, an evaporating cylinder, a stirring cylinder and a rotary drive assembly, the evaporating cylinder is arranged on the frame, and a heat interlayer is arranged on the peripheral wall of the evaporating cylinder, the stirring cylinder is rotatably connected in the evaporating cylinder, an evaporation chamber is formed between the outer peripheral wall of the stirring cylinder and the inner peripheral wall of the evaporating cylinder, a feeding pipe group connected to the evaporation chamber is arranged on the side of the evaporating cylinder, a discharge pipe connected to the evaporation chamber is arranged at the bottom of the evaporating cylinder, spiral blades are wound around the peripheral wall of the stirring cylinder, the spiral blades are used to drive the feed liquid to be transported from one end of the feeding pipe group to one end of the discharge pipe, a collecting pipe group connected to the evaporation chamber is arranged on the top of the evaporating cylinder, an auxiliary heating element is arranged in the stirring cylinder, and the outer end of the stirring cylinder is connected to the rotary drive assembly.

[0006] In one possible implementation, the feed pipe group includes a feed main pipe and a plurality of feed branch pipes connected to the feed main pipe. The feed branch pipes are arranged at intervals along the axial direction of the feed main pipe. The feed branch pipes are connected to the sides of the evaporator cylinder and are respectively connected to the evaporation chambers.

[0007] In some embodiments, the collecting tube group includes a plurality of inverted cone buckets connected to the top of the evaporating tube and an air supply pipe connected to the top of the inverted cone bucket. The outlet end of the air supply pipe is connected to a condensing tank, and a cooling interlayer is provided on the condensing tank.

[0008] In a possible implementation, the rotary drive assembly includes a motor, a reducer connected to the motor, a driving gear connected to the reducer, and a driven gear meshing with the driving gear, and a mounting shaft for mounting the driven gear is provided at the end of the mixing drum.

[0009] In a possible implementation, a scraper seat located between two layers of blades of the spiral blade is further provided on the peripheral wall of the mixing drum. The scraper seat extends along the axial direction of the mixing drum and is used to scrape and coat the liquid onto the inner wall of the evaporating drum.

[0010] In some embodiments, the scraper seat is provided with an arc-shaped cavity that is inwardly arc-shaped and recessed, and the arc-shaped cavity is arranged toward the inner circumferential wall of the evaporator tube. The scraper seat has scraping parts located on both sides of the arc-shaped cavity, and a gap is provided between the scraping parts and the inner circumferential wall of the evaporator tube.

[0011] In one possible implementation, a sealing assembly is provided on the outer periphery of the mixing drum. The sealing assembly is provided in two groups and is respectively arranged near the two ends of the mixing drum. The sealing assembly includes an outer static ring connected to the inner peripheral wall of the evaporating drum and an inner dynamic ring sleeved on the outer peripheral wall of the mixing drum. At least two sealing rings are provided between the inner dynamic ring and the evaporating drum. The outer static ring, the inner dynamic ring and the sealing ring respectively extend along the circumference of the mixing drum.

[0012] In some embodiments, the feed pipe group and the discharge pipe are respectively arranged near the two ends of the evaporating cylinder, and the feed pipe group and the discharge pipe are located between the two groups of sealing components.

[0013] In a possible implementation, the auxiliary heating element is a heating wire disposed in the mixing drum, the heating wire is spirally disposed on the inner circumferential wall of the mixing drum, and the outer end of the heating wire is connected to the power supply wire through a rotary joint.

[0014] In some embodiments, a heat-insulating column is further provided at the axis of the mixing drum, and the heating wire is wound around the outer circumference of the heat-insulating column.

[0015] Compared with the prior art, the scheme shown in the embodiment of the present application utilizes the heat interlayer on the evaporating cylinder to evaporate and heat the feed liquid, and simultaneously utilizes the auxiliary heating element to heat the stirring cylinder, thereby effectively improving the heating rate of the feed liquid and facilitating improving the evaporation efficiency of the feed liquid in the evaporating chamber. The setting of the spiral blades can make the feed liquid evenly dispersed on the peripheral wall of the evaporating cylinder, thereby improving the uniformity of the feed liquid distribution, facilitating ensuring the treatment quality of the feed liquid, and helping to improve the evaporation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of a partial cross-sectional structure of a horizontal evaporation treatment device for alkali metal salts provided in an embodiment of the utility model;

[0018] Figure 2 For the utility model embodiment Figure 1 The partially enlarged structural diagram of middle Ⅰ;

[0019] Figure 3 For the utility model embodiment Figure 1 A schematic diagram of a top view of a horizontal evaporation treatment device for alkali metal salts;

[0020] Figure 4 For the utility model embodiment Figure 3 A schematic diagram of the left side partial cross-sectional structure of a horizontal evaporation treatment equipment for alkali metal salts.

[0021] Among them, the reference numerals in the figure are:

[0022] 1. Frame; 2. Evaporation cylinder; 21. Thermal interlayer; 22. Evaporation chamber; 23. Discharge pipe; 3. Mixing cylinder; 31. Spiral blade; 32. Scraper seat; 33. Arc-shaped cavity; 34. Scraper part; 35. Auxiliary heating element; 36. Mounting shaft; 37. Insulation column; 4. Rotary drive assembly; 41. Motor; 42. Reducer; 43. Driving gear; 44. Driven gear; 5. Feed pipe group; 51. Feed main pipe; 52. Feed branch pipe; 6. Collecting pipe group; 61. Inverted cone bucket; 62. Air supply pipe; 7. Sealing assembly; 71. Outer static ring; 72. Inner dynamic ring; 73. Sealing ring; 8. Condensate tank. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0025] Please also read Figures 1 to 4 Now, the horizontal evaporation treatment equipment for alkali metal salts provided by the utility model is described. The horizontal evaporation treatment equipment for alkali metal salts comprises a frame 1, an evaporating cylinder 2, a stirring cylinder 3 and a rotary drive assembly 4. The evaporating cylinder 2 is arranged on the frame 1, and a heat interlayer 21 is arranged on the peripheral wall of the evaporating cylinder 2. The stirring cylinder 3 is rotatably connected to the evaporating cylinder 2. An evaporation chamber 22 is formed between the outer peripheral wall of the stirring cylinder 3 and the inner peripheral wall of the evaporating cylinder 2. A feed pipe group 5 communicating with the evaporation chamber 22 is arranged on the side of the evaporating cylinder 2. A discharge pipe 23 communicating with the evaporation chamber 22 is arranged at the bottom of the evaporating cylinder 2. A spiral blade 31 is wound around the peripheral wall of the stirring cylinder 3. The spiral blade 31 is used to drive the liquid to be transported from one end of the feed pipe group 5 to one end of the discharge pipe 23. A collection pipe group 6 communicating with the evaporation chamber 22 is arranged on the top of the evaporating cylinder 2. An auxiliary heating element 35 is arranged in the stirring cylinder 3. The outer end of the stirring cylinder 3 is connected to the rotary drive assembly 4.

[0026] Compared with the prior art, the horizontal evaporation treatment equipment for alkali metal salts provided in this embodiment utilizes the heat interlayer 21 on the evaporation cylinder 2 to evaporate and heat the feed liquid, and utilizes the auxiliary heating element 35 to heat the stirring cylinder 3, thereby effectively improving the heating rate of the feed liquid and facilitating the improvement of the evaporation efficiency of the feed liquid in the evaporation chamber 22. The setting of the spiral blades 31 can make the feed liquid evenly dispersed on the peripheral wall of the evaporation cylinder 2, thereby improving the uniformity of the feed liquid distribution, facilitating the guarantee of the treatment quality of the feed liquid, and helping to improve the evaporation efficiency.

[0027] In this embodiment, the spiral blades 31 arranged on the peripheral wall of the mixing cylinder 3 can realize the orderly delivery of the liquid feed to the side of the discharge pipe 23, and can also effectively disperse the liquid feed so that the liquid feed can fully contact the inner peripheral wall of the evaporation cylinder 2, which helps to improve the evaporation efficiency. Specifically, there is a certain gap between the outer peripheral edge of the spiral blades 31 and the inner peripheral wall of the evaporation cylinder 2 to meet the coating requirements of the liquid feed.

[0028] In one possible implementation, see Figures 1 to 4 The feed pipe group 5 includes a feed main pipe 51 and a plurality of feed branch pipes 52 connected to the feed main pipe 51. The feed branch pipes 52 are arranged at intervals along the axial direction of the feed main pipe 51. The feed branch pipes 52 are connected to the sides of the evaporation tube 2 and are respectively connected to the evaporation chambers 22.

[0029] In this embodiment, the feed pipe group 5 can supply feed to the evaporating cylinder 2 at multiple points, and use the main feed pipe 51 to supply liquid feed to multiple feed branch pipes 52. The liquid feed enters the evaporating chamber 22 through the feed branch pipes 52, which can improve the uniformity of liquid feed distribution.

[0030] The multiple feed branch pipes 52 can effectively disperse the feed liquid at different axial positions of the evaporation tube 2, improve the uniformity of the distribution of the feed liquid in the evaporation tube 2, shorten the evaporation time of the feed liquid, and improve the evaporation efficiency of the feed liquid. Furthermore, the outlet end of the feed branch pipe 52 can be set as a bell mouth structure, so as to increase the distribution area of ​​the feed liquid and improve the uniformity of the distribution of the feed liquid on the inner peripheral wall of the evaporation tube 2.

[0031] For some examples, see Figures 1 to 4 The collecting pipe group 6 includes a plurality of inverted cone buckets 61 connected to the top of the evaporating tube 2 and an air supply pipe 62 connected to the top of the inverted cone bucket 61. The outlet end of the air supply pipe 62 is connected to a condenser 8, and a cooling interlayer is provided on the condenser 8. The vapor evaporated from the evaporator is introduced into the condenser 8 through the air supply pipe 62 through the multiple inverted cone buckets 61, and is neatly condensed and collected to avoid air pollution caused by direct discharge of the above-mentioned vapor. It has good collection performance and is convenient for subsequent reuse or treatment. A suction device is set on the air supply pipe 62 to improve the collection efficiency of the vapor at the position of the inverted cone bucket 61 and increase the evaporation rate of the liquid.

[0032] In one possible implementation, see Figures 1 to 4 The rotary drive assembly 4 includes a motor 41, a reducer 42 connected to the motor 41, a driving gear 43 connected to the reducer 42, and a driven gear 44 meshing with the driving gear 43. The end of the mixing drum 3 is provided with a mounting shaft 36 for mounting the driven gear 44.

[0033] In this embodiment, the motor 41 drives the reducer 42 to rotate, and the driving gear 43 on the output shaft of the reducer 42 drives the driven gear 44 to rotate, thereby realizing the circumferential rotation of the mixing drum 3, ensuring that the mixing drum 3 can transport and disperse the slurry, and ensuring the uniform dispersion of the slurry on the inner wall of the evaporating cylinder 2.

[0034] In one possible implementation, see Figures 1 to 4 In a possible implementation, a scraper seat 32 is provided on the peripheral wall of the mixing drum 3 and is located between two layers of blades of the spiral blade 31. The scraper seat 32 extends along the axial direction of the mixing drum 3 and is used to scrape and coat the liquid onto the inner wall of the evaporating drum 2.

[0035] In this embodiment, a scraper seat 32 is also provided on the peripheral wall of the mixing drum 3, and the scraper seat 32 can be used to evenly scrape the liquid material so that it is evenly distributed on the inner peripheral wall of the evaporating drum 2. In the axial direction of the mixing drum 3, the pitch of the spiral blade 31 can be selected to be a larger value to achieve slow delivery of the liquid material. The scraper seat 32 is located between the two layers of the spiral blade 31, which can make full use of the space and also meet the dispersion effect of the liquid material.

[0036] For some examples, see Figures 1 to 4 The scraper seat 32 is provided with an arc-shaped cavity 33 that is inwardly arc-shaped and recessed. The arc-shaped cavity 33 is arranged toward the inner peripheral wall of the evaporation tube 2. The scraper seat 32 has scraper parts 34 located on both sides of the arc-shaped cavity 33. A gap is provided between the scraper parts 34 and the inner peripheral wall of the evaporation tube 2. The arc-shaped cavity 33 on the peripheral wall of the scraper seat 32 can carry a part of the liquid feed, so that the liquid feed follows the scraper seat 32 and moves along the circumference of the mixing tube 3, so that the scraper parts 34 on both sides of the scraper seat 32 can coat the liquid feed on the inner wall of the evaporation tube 2, thereby improving the uniformity of the liquid feed on the inner peripheral wall of the evaporation tube 2.

[0037] In one possible implementation, see Figures 1 to 4 A sealing assembly 7 is provided on the outer periphery of the mixing drum 3. The sealing assembly 7 is provided in two groups and is respectively arranged near the two ends of the mixing drum 3. The sealing assembly 7 includes an outer static ring 71 connected to the inner peripheral wall of the evaporating drum 2 and an inner dynamic ring 72 sleeved on the outer peripheral wall of the mixing drum 3. At least two sealing rings 73 are provided between the inner dynamic ring 72 and the evaporating drum 2. The outer static ring 71, the inner dynamic ring 72 and the sealing ring 73 extend along the circumference of the mixing drum 3 respectively.

[0038] In this embodiment, in order to ensure the sealing performance of the evaporation chamber 22, a sealing assembly 7 is provided between the inner peripheral wall of the evaporation cylinder 2 and the outer peripheral wall of the mixing cylinder 3. The sealing assembly 7 is provided with two groups, which are respectively located at the two ends of the evaporation chamber 22, thereby ensuring the effective sealing of the interior of the evaporation chamber 22 and preventing the liquid from leaking out.

[0039] Specifically, an outer static ring 71, an inner dynamic ring 72 and a sealing ring 73 are combined. The outer static ring 71 is fixedly connected to the inner peripheral wall of the steaming cylinder. The two are relatively fixed and in a static state. The inner dynamic ring 72 is fixedly connected to the outer peripheral wall of the mixing cylinder 3 and is located on the inner side of the outer static ring 71. It contacts the outer static ring 71 and can rotate with the mixing cylinder 3. The setting of the sealing ring 73 can ensure that the inner dynamic ring 72 has good sealing performance with the inner wall of the evaporating cylinder 2.

[0040] The sealing ring 73 is installed between the outer periphery of the inner moving ring 72 and the inner wall of the evaporation tube 2, which can ensure that the entire evaporation chamber 22 is in a sealed state, prevent the liquid from leaking out, and ensure the smooth progress of the liquid evaporation process.

[0041] For some examples, see Figures 1 to 4 The feed pipe group 5 and the discharge pipe 23 are respectively arranged near the two ends of the evaporation tube 2 , and the feed pipe group 5 and the discharge pipe 23 are located between the two groups of sealing components 7 .

[0042] In one possible implementation, see Figures 1 to 4 The auxiliary heating element 35 is a heating wire arranged in the mixing drum 3. The heating wire is spirally arranged on the inner circumferential wall of the mixing drum 3. The outer end of the heating wire is connected to the power supply wire through a rotary joint.

[0043] In this embodiment, the electric heating wire is arranged through the mounting shaft 36, and the electric heating method is adopted. On the basis of improving the evaporation efficiency of the liquid, it is convenient to carry out the structural layout and ensure the processing quality of the liquid. The electric heating wire is arranged in a spiral along the inner circumferential wall of the mixing drum 3 to improve the uniformity of the distribution of the electric heating wire and ensure the effective heating of the liquid in the evaporation chamber 22.

[0044] For some examples, see Figures 1 to 4 A heat-insulating column 37 is also provided at the axis of the mixing drum 3, and the electric heating wire is wound around the outer periphery of the heat-insulating column 37. By providing the heat-insulating column 37 in the mixing drum 3, the heat of the electric heating wire can be prevented from being dissipated into the mixing drum 3 to the greatest extent, and the heat generated by the heating wire can be dispersed to the outer periphery of the mixing drum 3 as much as possible, so as to effectively heat the feed liquid and improve the evaporation efficiency of the feed liquid.

[0045] The above-mentioned horizontal evaporation treatment equipment for alkali metal salts utilizes the heat interlayer 21 on the evaporation cylinder 2 to evaporate and heat the liquid, and utilizes the auxiliary heating element 35 to heat the stirring cylinder 3, thereby effectively increasing the heating rate of the liquid, and facilitating the improvement of the evaporation efficiency of the liquid in the evaporation chamber 22. The setting of the spiral blades 31 can make the liquid evenly dispersed on the peripheral wall of the evaporation cylinder 2, thereby improving the uniformity of the liquid distribution, facilitating the guarantee of the processing quality of the liquid, and helping to improve the evaporation efficiency.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal evaporation treatment equipment for alkali metal salts, characterized in that: The invention comprises a frame (1), an evaporating cylinder (2), a stirring cylinder (3) and a rotary drive assembly (4); the evaporating cylinder (2) is arranged on the frame (1), and a heat interlayer (21) is arranged on the peripheral wall of the evaporating cylinder (2); the stirring cylinder (3) is rotatably connected inside the evaporating cylinder (2); an evaporating chamber (22) is formed between the outer peripheral wall of the stirring cylinder (3) and the inner peripheral wall of the evaporating cylinder (2); a feeding pipe group (5) communicating with the evaporating chamber (22) is arranged on the side of the evaporating cylinder (2); and the evaporating cylinder (2) is provided with a heating element (21) and a heating element (22) is arranged on the side of the evaporating cylinder (2). A discharge pipe (23) communicating with the evaporation chamber (22) is provided at the bottom of the evaporation cylinder (2), a spiral blade (31) is wound around the peripheral wall of the stirring cylinder (3), and the spiral blade (31) is used to drive the liquid to be transported from one end of the supply pipe group (5) to one end of the discharge pipe (23), a collecting pipe group (6) communicating with the evaporation chamber (22) is provided at the top of the evaporation cylinder (2), an auxiliary heating element (35) is provided in the stirring cylinder (3), and the outer end of the stirring cylinder (3) is connected to the rotating drive assembly (4).

2. The horizontal evaporation treatment equipment for alkali metal salts according to claim 1, characterized in that: The feed pipe group (5) comprises a feed main pipe (51) and a plurality of feed branch pipes (52) connected to the feed main pipe (51); the feed branch pipes (52) are arranged at intervals along the axial direction of the feed main pipe (51); the feed branch pipes (52) are connected to the side of the evaporation cylinder (2) and are respectively communicated with the evaporation chamber (22).

3. The horizontal evaporation treatment equipment for alkali metal salts according to claim 2, characterized in that: The collecting tube group (6) comprises a plurality of inverted cone buckets (61) connected to the top of the evaporating tube (2) and an air supply pipe (62) connected to the top of the inverted cone bucket (61); the outlet end of the air supply pipe (62) is connected to a condensing tank (8); and a cooling interlayer is provided on the condensing tank (8).

4. The horizontal evaporation treatment equipment for alkali metal salts according to claim 1, characterized in that: The rotary drive assembly (4) comprises a motor (41), a reducer (42) connected to the motor (41), a driving gear (43) connected to the reducer (42), and a driven gear (44) meshing with the driving gear (43); a mounting shaft (36) for mounting the driven gear (44) is provided at the end of the mixing drum (3).

5. The horizontal evaporation treatment equipment for alkali metal salts according to claim 1, characterized in that: A scraper seat (32) is also provided on the peripheral wall of the mixing cylinder (3) and is located between two layers of blades of the spiral blade (31). The scraper seat (32) extends along the axial direction of the mixing cylinder (3) and is used to scrape and apply liquid to the inner wall of the evaporating cylinder (2).

6. The horizontal evaporation treatment equipment for alkali metal salts according to claim 5, characterized in that: The scraper seat (32) is provided with an arc-shaped cavity (33) which is recessed inwardly in an arc shape, and the arc-shaped cavity (33) is arranged toward the inner peripheral wall of the evaporator tube (2). The scraper seat (32) has scraper portions (34) located on both sides of the arc-shaped cavity (33), and a gap is provided between the scraper portions (34) and the inner peripheral wall of the evaporator tube (2).

7. The horizontal evaporation treatment equipment for alkali metal salts according to any one of claims 1 to 6, characterized in that: A sealing assembly (7) is provided on the outer periphery of the stirring barrel (3). The sealing assembly (7) is provided with two groups and is respectively arranged near the two ends of the stirring barrel (3). The sealing assembly (7) comprises an outer static ring (71) connected to the inner peripheral wall of the evaporating barrel (2) and an inner dynamic ring (72) sleeved on the outer peripheral wall of the stirring barrel (3). At least two sealing rings (73) are provided between the inner dynamic ring (72) and the evaporating barrel (2). The outer static ring (71), the inner dynamic ring (72) and the sealing ring (73) respectively extend along the circumference of the stirring barrel (3).

8. The horizontal evaporation treatment equipment for alkali metal salts according to claim 7, characterized in that: The feed pipe group (5) and the discharge pipe (23) are respectively arranged close to the two ends of the evaporating cylinder (2), and the feed pipe group (5) and the discharge pipe (23) are located between the two groups of sealing components (7).

9. The horizontal evaporation treatment equipment for alkali metal salts according to any one of claims 1 to 6, characterized in that: The auxiliary heating element (35) is an electric heating wire arranged in the mixing drum (3), the electric heating wire is spirally wound on the inner circumferential wall of the mixing drum (3), and the outer end of the electric heating wire is connected to the power supply wire through a rotating joint.

10. The horizontal evaporation treatment equipment for alkali metal salts according to claim 9, characterized in that: A heat-insulating column (37) is also provided at the axis of the mixing drum (3), and the heating wire is wound around the outer circumference of the heat-insulating column (37).

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