CN211836327U

CN211836327U - Sodium sulfite evaporator convenient to clean

Info

Publication number: CN211836327U
Application number: CN202020173994.8U
Authority: CN
Inventors: 李林; 楚叶波; 杜贵胜
Original assignee: Jiangsu Daimengte Chemical Technology Co ltd
Current assignee: Jiangsu Daimengte Chemical Technology Co ltd
Priority date: 2020-02-14
Filing date: 2020-02-14
Publication date: 2020-11-03
Anticipated expiration: 2030-02-14

Abstract

A sodium sulfite evaporator convenient to clean comprises a sodium sulfite evaporator, an upper cover of the sodium sulfite evaporator, a cleaning assembly and a cleaning driving assembly, wherein the cleaning driving assembly can drive the cleaning assembly to be right above the sodium sulfite evaporator; the cleaning assembly comprises a screw driving motor, an upper screw supporting seat, a lower screw supporting seat, a screw, a sliding block, a cleaning liquid inlet pipe, a cleaning liquid main pipe, a group of cleaning liquid branch pipes, a group of cleaning liquid nozzles, a cleaning liquid return pipe, a pump and a motor. The sodium sulfite evaporator convenient to clean has the advantages that after the sodium sulfite evaporator is cleaned by the sodium hydroxide solution by adopting the method, the heat transfer effect of the sodium sulfite evaporator is better, the evaporation speed is high, and the effect is different from the effect of cleaning the evaporator by boiling water before, so that the product quality of the sodium sulfite can be ensured; meanwhile, the cleaning structure is energy-saving and environment-friendly, and the production cost of an enterprise can be reduced.

Description

Sodium sulfite evaporator convenient to clean

Technical Field

The utility model belongs to the technical field of chemical industry equipment, specifically, relate to a inferior sodium evaporator convenient to wash.

Background

The sodium sulfite evaporator is a necessary device for nitrate production enterprises, is influenced by structure, and is easy to generate a layer of scale on a pipe hole and a pipe plate after being used for a period of time, so that the heat exchange effect of the evaporator is weakened, the evaporation speed is seriously influenced, steam is wasted, and the normal yield of sodium sulfite is reduced.

The tube plate material in the existing sodium sulfite evaporator is carbon steel, the evaporator can not be washed by acid when boiling, and if boiling by water, the alkali scale on the tube plate can not be boiled, and is completely attached to the tube plate by the alkali scale, thus the heat transfer effect is slow. In addition, if the sodium sulfite evaporator is not cleaned for a long time and the alkali scale is seriously adhered, the evaporation time is prolonged, and the product quality problem is seriously influenced.

Therefore, there is a need for improvement in the art to reduce scaling on the inner wall of the sodium sulfite evaporator and prevent the normal operating efficiency and production quality of the sodium sulfite evaporator from being affected.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a inferior sodium evaporimeter convenient to wash has solved the inferior sodium evaporimeter that adopts carbon steel preparation and has not been convenient for carry out the pickling, causes the problem of scale deposit on the inferior sodium evaporimeter tube sheet.

The technical scheme is as follows: the utility model provides a sodium sulfite evaporator convenient to wash, including sodium sulfite evaporator, sodium sulfite evaporator upper cover, washing subassembly and washing drive assembly, sodium sulfite evaporator and washing drive assembly all set up subaerial, the washing subassembly sets up on washing drive assembly, and wash drive assembly can drive washing subassembly to the sodium sulfite evaporator directly over, the sodium sulfite evaporator is the cylinder of upper end opening, the cover is established on the sodium sulfite evaporator; wherein, the cleaning component comprises a screw driving motor, an upper screw supporting seat, a lower screw supporting seat, a screw, a slide block, a cleaning liquid inlet pipe, a cleaning liquid main pipe, a group of cleaning liquid branch pipes, a group of cleaning liquid nozzles, a cleaning liquid return pipe, a pump and a motor, the screw driving motor, the upper screw supporting seat and the lower screw supporting seat are all fixedly arranged on the cleaning driving component, the screw is arranged between the upper screw supporting seat and the lower screw supporting seat and is connected with the screw driving motor, the slide block is sleeved on the screw and is in threaded connection with the screw, the cleaning liquid main pipe is connected with the slide block, the group of cleaning liquid branch pipes are all communicated with the cleaning liquid main pipe, the group of cleaning liquid branch pipes and the group of cleaning liquid nozzles are arranged in one-to-one correspondence, and the cleaning liquid nozzles are arranged on, the cleaning liquid inlet pipe is communicated with the cleaning liquid main pipe, one end of the cleaning liquid return pipe is connected with a discharge hole at the lower end part of the sodium sulfite evaporator, the other end of the cleaning liquid return pipe is connected with a pump, the pump is driven by a motor, and the pump is connected with one end of the cleaning liquid inlet pipe. The sodium sulfite evaporator convenient to clean is used for cleaning dirt on the inner wall of the sodium sulfite evaporator, and the sodium hydroxide solution continuously washes the inner wall of the sodium sulfite evaporator in the cleaning process to completely wash the dirt, thereby increasing the cleaning effect; and the cleaned cleaning liquid is collected again for cyclic utilization, so that energy is saved.

Further, foretell inferior sodium evaporimeter convenient to wash, be equipped with material import and material export on the inferior sodium evaporimeter, the inner chamber intercommunication of material import and inferior sodium evaporimeter, the lower tip of inferior sodium evaporimeter is the toper to the material export sets up on the lower tip of inferior sodium evaporimeter.

Furthermore, in the above sodium sulfite evaporator convenient for cleaning, the material outlet is provided with an electromagnetic valve, one end of the cleaning liquid return pipe is connected with the material outlet, and the cleaning liquid return pipe can be connected with or disconnected from the material outlet through the electromagnetic valve.

Furthermore, in the above sodium sulfite evaporator convenient to clean, an air outlet is arranged at the upper end of the upper cover of the sodium sulfite evaporator.

Furthermore, the sodium sulfite evaporator convenient to clean is provided with a viewing mirror. The sight glass of setting is convenient for look over the internal conditions of inferior sodium evaporimeter.

Furthermore, in the above sodium sulfite evaporator convenient to clean, the section of the main cleaning liquid pipe is circular, the group of cleaning liquid branch pipes are arranged in an annular array mode by taking the center of the main cleaning liquid pipe as the center, a group of connecting rods are arranged between the main cleaning liquid pipe and the sliding block, and the diameter of the circumference where the group of cleaning liquid nozzles are located is smaller than the diameter of the inner wall of the sodium sulfite evaporator. A set of washing liquid branch pipes are arranged in an annular array mode, so that a set of washing liquid nozzles are also arranged in an annular array mode, and the washing liquid can be uniformly sprayed onto the inner wall of the sodium sulfite evaporator by the set of washing liquid nozzles.

Further, foretell sodium sulfite evaporimeter convenient to wash, wash drive assembly including two symmetry setting I-beams, wash subassembly support frame, rack, horizontal drive motor and gear, wash the I-beam sliding connection that the lower tip and two symmetries set up of subassembly support frame, wash the subassembly setting on wasing the subassembly support frame, horizontal drive motor is fixed to be set up on wasing the subassembly support frame to horizontal drive motor's pivot and gear connection, the rack is fixed to be set up on one of them of two symmetry setting I-beams to rack and gear engagement. The structure that the gear is driven to move along the rack by the horizontal driving motor is adopted, so that the movement is stable.

Furthermore, foretell sodium sulfite evaporimeter convenient to wash, wash the subassembly support frame and include portal frame, two horizontal support boards that the symmetry set up and the deep floor that two symmetries set up, the horizontal support board that two symmetries set up sets up respectively on the lower tip of portal frame, deep floor sets up between the stand of portal frame and horizontal support board, wash the subassembly and set up on the crossbeam of portal frame. The gantry frame part of the cleaning component support frame with the structure can stably support the cleaning component, the two symmetrically arranged horizontal support plates at the lower end part can be guaranteed to be connected with the I-shaped beam, and the reinforcing rib plate improves the strength between the gantry frame and the horizontal support plates.

Furthermore, in the sodium sulfite evaporator convenient to clean, the horizontal support plates on the two symmetrical horizontal support plates and close to one side of the rack are provided with the motor support plates, and the horizontal driving motor is fixedly arranged on the motor support plates. The motor supporting plate that sets up can carry out horizontal driving motor's stable installation.

Further, foretell sodium sulfite evaporimeter convenient to wash, be equipped with the spout on the I-beam, be equipped with a set of gyro wheel backup pad in the horizontal support board, be equipped with the gyro wheel in the gyro wheel backup pad, the gyro wheel sets up in the spout to the gyro wheel can roll in the spout. The roller limit who sets up rolls in the spout, can keep cleaning assembly support frame horizontal migration's stability.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the sodium sulfite evaporator convenient to clean has reasonable structural design, only needs to manually configure the sodium hydroxide solution, automatically carries out other cleaning processes, does not need manual cleaning, saves labor power, improves the working efficiency, and has better heat transfer effect and high evaporation speed after the sodium sulfite evaporator is cleaned by the sodium hydroxide solution by adopting the method, and the effect is different from the effect of cleaning the evaporator by boiling water before, thus ensuring the product quality of the sodium sulfite; meanwhile, the cleaning structure is energy-saving and environment-friendly, and the production cost of an enterprise can be reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the sodium sulfite evaporator convenient to clean according to the present invention;

FIG. 2 is a schematic structural view of a sodium sulfite evaporator convenient to clean according to the present invention;

fig. 3 is a schematic structural view of the cleaning assembly of the present invention;

fig. 4 is a schematic view of a partial structure of the cleaning driving assembly of the present invention.

In the figure: the cleaning device comprises a sodium sulfite evaporator 1, a material inlet 11, a material outlet 12, an electromagnetic valve 13, a sight glass 14, a sodium sulfite evaporator upper cover 2, an air outlet 21, a cleaning component 3, a screw driving motor 31, an upper screw supporting seat 32, a lower screw supporting seat 33, a screw 34, a slide block 35, a cleaning liquid inlet pipe 36, a cleaning liquid main pipe 37, a cleaning liquid branch pipe 38, a cleaning liquid nozzle 39, a cleaning liquid return pipe 310, a pump 311, a motor 312, a connecting rod 313, a cleaning driving component 4, an I-beam 41, a cleaning component supporting frame 42, a portal frame 421, a horizontal supporting plate 422, a reinforcing rib plate 423, a motor supporting plate 424, a roller supporting plate 425, a roller 426, a rack 43, a horizontal driving motor 44 and.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example one

The sodium sulfite evaporator convenient to clean as shown in fig. 1 comprises a sodium sulfite evaporator 1, a sodium sulfite evaporator upper cover 2, a cleaning component 3 and a cleaning driving component 4, wherein the sodium sulfite evaporator 1 and the cleaning driving component 4 are both arranged on the ground, the cleaning component 3 is arranged on the cleaning driving component 4, the cleaning driving component 4 can drive the cleaning component 3 to be right above the sodium sulfite evaporator 1, the sodium sulfite evaporator 1 is in a cylindrical shape with an opening at the upper end, and the sodium sulfite evaporator upper cover 2 covers the sodium sulfite evaporator 1.

In the structure, the sodium sulfite evaporator 1 is provided with the material inlet 11 and the material outlet 12, the material inlet 11 is communicated with the inner cavity of the sodium sulfite evaporator 1, the lower end part of the sodium sulfite evaporator 1 is conical, and the material outlet 12 is arranged on the lower end part of the sodium sulfite evaporator 1. The material outlet 12 is provided with an electromagnetic valve 13, one end of the cleaning liquid return pipe 310 is connected with the material outlet 12, and the cleaning liquid return pipe 310 can be connected with or disconnected from the material outlet 12 through the electromagnetic valve 13. And an air outlet 21 is arranged at the upper end part of the upper cover 2 of the sodium sulfite evaporator. The sodium sulfite evaporator 1 is provided with a sight glass 14.

Wherein, the cleaning assembly 3 shown in fig. 2 and 3 comprises a screw driving motor 31, an upper screw supporting seat 32, a lower screw supporting seat 33, a screw 34, a slide block 35, a cleaning solution inlet pipe 36, a cleaning solution main pipe 37, a group of cleaning solution branch pipes 38, a group of cleaning solution nozzles 39, a cleaning solution return pipe 310, a pump 311 and a motor 312, the screw driving motor 31, the upper screw supporting seat 32 and the lower screw supporting seat 33 are all fixedly arranged on the cleaning driving assembly 4, the screw 34 is arranged between the upper screw supporting seat 32 and the lower screw supporting seat 33, the screw 34 is connected with the screw driving motor 31, the slide block 35 is sleeved on the screw 34, the slide block 35 is in threaded connection with the screw 34, the cleaning solution main pipe 37 is connected with the slide block 35, the group of cleaning solution branch pipes 38 are all communicated with the cleaning solution main pipe 37, the group of cleaning solution branch pipes 38 and the group, and a cleaning liquid nozzle 39 is provided on the end of the cleaning liquid branch pipe 38 remote from the cleaning liquid main pipe 37, the cleaning liquid inlet pipe 36 communicates with the cleaning liquid main pipe 37, one end of the cleaning liquid return pipe 310 is connected to the discharge port of the lower end portion of the sodium sulfite evaporator 1, and the other end of the cleaning liquid return pipe 310 is connected to a pump 311, the pump 311 is driven by a motor 312, and the pump 311 is connected to one end of the cleaning liquid inlet pipe 36. The cleaning liquid main pipe 37 is circular in cross section, the cleaning liquid branch pipes 38 are arranged in an annular array with the center of the cleaning liquid main pipe 37 as the center, a connecting rod 313 is arranged between the cleaning liquid main pipe 37 and the slide block 35, and the diameter of the circumference where the cleaning liquid nozzles 39 are located is smaller than the diameter of the inner wall of the sodium sulfite evaporator 1.

The working principle of the cleaning assembly 3 is as follows: the screw driving motor 31 drives the screw 34 to rotate, and since the screw 34 is threadedly connected with the slider 35, therefore, the screw rod 34 rotates clockwise or counterclockwise, the slide block 35 is driven to move up and down, before the cleaning component 3 is positioned right above the sodium sulfite evaporator 1, the slide block 35 is positioned at the upper end part of the screw rod 34, so that the cleaning driving component 4 can drive the cleaning component 3 to move to the position right above the sodium sulfite evaporator 1, then the screw driving motor 31 drives the screw 34 to rotate, so that the slide block 35 moves downwards, and simultaneously drives the cleaning liquid main pipe 37, the group of cleaning liquid branch pipes 38 and the group of cleaning liquid nozzles 39 to synchronously move downwards until the slide block 35 is positioned at the lowest end of the screw 34, at this time, the group of cleaning liquid nozzles 39 are positioned in the inner cavity of the sodium sulfite evaporator 1, so that when the sodium sulfite evaporator 1 is cleaned in the later period, a set of cleaning solution spray nozzles 39 can be lowered to spray cleaning solution onto the inner wall of the sodium sulfite evaporator 1.

Example two

Based on the structure of the embodiment, the cleaning driving assembly 4 shown in fig. 4 includes two symmetrically arranged i-beams 41, a cleaning assembly supporting frame 42, a rack 43, a horizontal driving motor 44 and a gear 45, the lower end portion of the cleaning assembly supporting frame 42 is slidably connected with the two symmetrically arranged i-beams 41, the cleaning assembly 3 is arranged on the cleaning assembly supporting frame 42, the horizontal driving motor 44 is fixedly arranged on the cleaning assembly supporting frame 42, the rotating shaft of the horizontal driving motor 44 is connected with the gear 45, the rack 43 is fixedly arranged on one of the two symmetrically arranged i-beams 41, and the rack 43 is meshed with the gear 45. The cleaning assembly support frame 42 comprises a portal frame 421, two symmetrically arranged horizontal support plates 422 and two symmetrically arranged reinforcing rib plates 423, the two symmetrically arranged horizontal support plates 422 are respectively arranged at the lower end part of the portal frame 421, the reinforcing rib plates 423 are arranged between the upright columns and the horizontal support plates 422 of the portal frame 421, and the cleaning assembly 3 is arranged on a cross beam of the portal frame 421. In addition, motor supporting plates 424 are arranged on the horizontal supporting plates 422 on the side, close to the rack 43, of the two symmetrically arranged horizontal supporting plates 422, and the horizontal driving motor 44 is fixedly arranged on the motor supporting plates 424. In addition, the i-beam 41 is provided with a sliding groove 411, the horizontal support plate 422 is provided with a group of roller support plates 425, the roller support plates 425 are provided with rollers 426, the rollers 426 are arranged in the sliding groove 411, and the rollers 426 can roll in the sliding groove 411.

The working principle of the cleaning driving assembly 4 is as follows: when not needing to wash, wash subassembly support frame 42 and be located one side of inferior sodium evaporimeter 1, when needing to carry out inferior sodium evaporimeter 1 and wash, horizontal drive motor 44 starts, drive gear 45 and rotate, because gear 45 and rack 43 mesh, consequently gear 45 removes along rack 43, drive and wash subassembly support frame 42 horizontal migration, because wash subassembly 3 sets up on washing subassembly support frame 42, consequently wash subassembly 3 synchronous motion, move to inferior sodium evaporimeter 1 directly over until washing subassembly 3.

The utility model discloses a be convenient for abluent sodium sulfite evaporimeter's theory of operation does:

before the sodium sulfite evaporator is required to be cleaned, the upper cover 2 of the sodium sulfite evaporator is opened, the cleaning component 3 is moved to the opening at the upper end of the sodium sulfite evaporator 1 through the cleaning driving component 4, 40Kg of sodium hydroxide with two bags is added into a prepared barrel in advance for dissolving, the dissolved sodium hydroxide solution is pumped into the sodium sulfite evaporator 1 by a pump for cooking for two hours, the screw rod 34 is driven to rotate by the screw rod driving motor 31, a group of branch cleaning solution pipes 38 and a group of cleaning solution nozzles 39 are descended into the inner cavity of the sodium sulfite evaporator 1, the sodium hydroxide solution in the sodium sulfite evaporator 1 is continuously pumped into the cleaning solution main pipe 37 above by the pump 311 in the cooking process, the sodium hydroxide solution in the cleaning solution main pipe 37 is shunted into the group of branch cleaning solution pipes 38 and is sprayed onto the inner wall of the sodium sulfite evaporator 1 through the group of cleaning solution nozzles 39, the pump 311 is used to continuously pump the sodium hydroxide solution, so that the sodium hydroxide solution can be directly acted on the inner wall of the sodium sulfite evaporator 1, and a brighter and better descaling effect is achieved.

And finally, dissolving the alkali scale in the sodium sulfite evaporator by using sodium hydroxide, discharging the dissolved alkali scale, and washing the sodium sulfite evaporator by using water. The method can thoroughly wash the sodium sulfite evaporator.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a sodium sulfite evaporimeter convenient to wash which characterized in that: the cleaning device comprises a sodium sulfite evaporator (1), a sodium sulfite evaporator upper cover (2), a cleaning assembly (3) and a cleaning driving assembly (4), wherein the sodium sulfite evaporator (1) and the cleaning driving assembly (4) are both arranged on the ground, the cleaning assembly (3) is arranged on the cleaning driving assembly (4), the cleaning driving assembly (4) can drive the cleaning assembly (3) to be right above the sodium sulfite evaporator (1), the sodium sulfite evaporator (1) is in a cylindrical shape with an opening at the upper end, and the sodium sulfite evaporator upper cover (2) is covered on the sodium sulfite evaporator (1);

wherein, the cleaning component (3) comprises a screw driving motor (31), an upper screw supporting seat (32), a lower screw supporting seat (33), a screw (34), a slide block (35), a cleaning liquid inlet pipe (36), a cleaning liquid main pipe (37), a group of cleaning liquid branch pipes (38), a group of cleaning liquid nozzles (39), a cleaning liquid return pipe (310), a pump (311) and a motor (312), the screw driving motor (31), the upper screw supporting seat (32) and the lower screw supporting seat (33) are all fixedly arranged on the cleaning driving component (4), the screw (34) is arranged between the upper screw supporting seat (32) and the lower screw supporting seat (33), the screw (34) is connected with the screw driving motor (31), the slide block (35) is sleeved on the screw (34), the slide block (35) is in threaded connection with the screw (34), the cleaning liquid main pipe (37) is connected with the slide block (35), the utility model discloses a washing machine, including washing liquid branch pipe (38), washing liquid branch pipe (38) and a set of washing liquid nozzle (39), a set of washing liquid branch pipe (38) and a set of washing liquid nozzle (39) one-to-one set up to washing liquid nozzle (39) set up and keep away from on the tip that washing liquid was responsible for (37) washing liquid branch pipe (38), washing liquid inlet pipe (36) and washing liquid are responsible for (37) and are linked, the discharge gate of the one end and the inferior sodium evaporimeter (1) tip of washing liquid back flow (310) is connected, and the other end and the pump (311) of washing liquid back flow (310) are connected, pump (311) are passed through motor (312) drive, pump (311) and the one end of washing liquid inlet.

2. The sodium sulfite evaporator easy to clean of claim 1, wherein: be equipped with material import (11) and material export (12) on inferior sodium evaporimeter (1), the inner chamber intercommunication of material import (11) and inferior sodium evaporimeter (1), the lower tip of inferior sodium evaporimeter (1) is the toper to material export (12) set up on the lower tip of inferior sodium evaporimeter (1).

3. The sodium sulfite evaporator easy to clean of claim 2, wherein: an electromagnetic valve (13) is arranged on the material outlet (12), one end of the cleaning liquid return pipe (310) is connected with the material outlet (12), and the cleaning liquid return pipe (310) can be communicated or disconnected with the material outlet (12) through the electromagnetic valve (13).

4. The sodium sulfite evaporator easy to clean of claim 1, wherein: an air outlet (21) is arranged at the upper end part of the upper cover (2) of the sodium sulfite evaporator.

5. The sodium sulfite evaporator easy to clean of claim 1, wherein: and a sight glass (14) is arranged on the sodium sulfite evaporator (1).

6. The sodium sulfite evaporator easy to clean of claim 1, wherein: the section of the cleaning liquid main pipe (37) is circular, the group of cleaning liquid branch pipes (38) are arranged in an annular array mode by taking the circle center of the cleaning liquid main pipe (37) as the center, a group of connecting rods (313) are arranged between the cleaning liquid main pipe (37) and the sliding block (35), and the circumferential diameter of the group of cleaning liquid nozzles (39) is smaller than the diameter of the inner wall of the sodium sulfite evaporator (1).

7. The sodium sulfite evaporator easy to clean of claim 1, wherein: wash drive assembly (4) including two I-beams (41) that the symmetry set up, wash subassembly support frame (42), rack (43), horizontal drive motor (44) and gear (45), wash the lower tip of subassembly support frame (42) and two I-beams (41) sliding connection that the symmetry set up, wash subassembly (3) and set up on washing subassembly support frame (42), horizontal drive motor (44) are fixed to be set up on washing subassembly support frame (42) to the pivot and the gear (45) of horizontal drive motor (44) are connected, rack (43) are fixed to be set up on one of them of two I-beams (41) that the symmetry set up, and rack (43) and gear (45) meshing.

8. The sodium sulfite evaporator easy to clean of claim 7, wherein: cleaning assembly support frame (42) include portal frame (421), horizontal support plate (422) that two symmetries set up and deep floor (423) that two symmetries set up, horizontal support plate (422) that two symmetries set up respectively on the lower tip of portal frame (421), deep floor (423) set up between the stand of portal frame (421) and horizontal support plate (422), cleaning assembly (3) set up on the crossbeam of portal frame (421).

9. The sodium sulfite evaporator easy to clean of claim 8, wherein: the motor supporting plate (424) is arranged on the horizontal supporting plate (422) close to one side of the rack (43) on the two symmetrically arranged horizontal supporting plates (422), and the horizontal driving motor (44) is fixedly arranged on the motor supporting plate (424).

10. The sodium sulfite evaporator easy to clean of claim 8, wherein: the I-beam (41) is provided with a sliding groove (411), the horizontal supporting plate (422) is provided with a group of roller supporting plates (425), the roller supporting plates (425) are provided with rollers (426), the rollers (426) are arranged in the sliding groove (411), and the rollers (426) can roll in the sliding groove (411).