An evaporator cleaning structure

Abstract

This utility model discloses an evaporator cleaning structure, including a top cover, a middle cylinder, and a bottom cover connected in sequence. The top cover is provided with a material inlet, and inside the top cover, at the material inlet, a material buffer plate, a first separation plate, a micro-directional injector, a second separation plate, a mounting frame, and several steam tubes are arranged in sequence. The mounting frame is provided with a micro-stirrer that matches the position of the steam tubes. A guide rod is connected to the output shaft of the micro-stirrer, and the guide rod extends into the steam tubes. A compressed air pipeline is provided on one side of the guide rod on the mounting frame, and the bottom end of the compressed air pipeline extends to the bottom end of the guide rod. A hollow ring is connected to the bottom end of the compressed air pipeline, and an air outlet is provided on the top surface of the hollow ring. An air booster is provided on the guide rod, and a scraper is connected to the top of the air booster. This utility model cleans the inside of the evaporator by combining chemical softening with physical cell wall breaking.

Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, and specifically to an evaporator cleaning structure. Background Technology

[0002] Evaporators, as core equipment in chemical, power, and metallurgical industries, have long suffered from scaling problems, which have plagued industrial operations. While existing cleaning technologies are diverse, they all have significant limitations. Mechanical cleaning methods, such as high-pressure water jets or unclogging pumps, can directly remove large pieces of scale, but are insufficient to thoroughly remove dense or deep-seated scale. Chemical cleaning, on the other hand, suffers from poor selectivity: traditional acid washing (such as hydrochloric acid and citric acid) is effective against carbonate scale, but has low solubility for insoluble scale (such as CaSO4, CaSiO3, and strontium / barium sulfate). Single cleaning agents cannot address complex scale layers (such as composite scale containing organic matter, silicates, and metal oxides), resulting in persistent hard scale residues even after repeated cleaning.

[0003] In addition, the combined costs of these two methods are high. Acid washing, in addition to the cost of the chemicals, includes hidden costs such as equipment corrosion depreciation, waste liquid treatment, and production downtime losses. High-pressure cleaning, although less damaging to equipment, is labor-intensive, time-consuming (4-5 days / time), and needs to be performed frequently, affecting continuous production. Utility Model Content

[0004] In view of the deficiencies in the prior art, this utility model provides an evaporator cleaning structure.

[0005] This utility model is achieved through the following technical solution: An evaporator cleaning structure includes a top cover, a middle cylinder, and a bottom cover connected in sequence. The top cover has a material inlet, and inside the top cover, at the material inlet, a material buffer plate, a first separation plate, a micro-directional injector, a second separation plate, a mounting frame, and several steam tubes are arranged in sequence. The mounting frame is equipped with a micro-agitator that matches the position of the steam tubes. A guide rod is connected to the output shaft of the micro-agitator, and the guide rod extends into the steam tubes. A compressed air pipeline is arranged on one side of the guide rod on the mounting frame, and the bottom end of the compressed air pipeline extends to the bottom end of the guide rod. A hollow ring is connected to the bottom end of the compressed air pipeline, and an air outlet is provided on the top surface of the hollow ring. An air booster is arranged on the guide rod, and a scraper is connected to the top of the air booster.

[0006] Preferably, a pH sensor is provided at the output end of the micro stirrer.

[0007] Preferably, an observation mirror is provided on the top cover.

[0008] Preferably, the compressed air pipeline is connected to the hollow ring via a compressed air regulating valve.

[0009] Preferably, an air flow sensor is installed at the air regulating valve of the compressed air pipeline.

[0010] Preferably, two flow-stabilizing guide rods are arranged symmetrically along the center between the top surface of the hollow ring and the output end of the micro stirrer.

[0011] The beneficial effects of this invention are as follows: This invention uses a pH sensor for real-time monitoring, injects the agent through a micro-directional injector, and uses a rotating scraper to scrape off the chemical softening and physical cell wall breaking to achieve cleaning, thereby extending the equipment's lifespan; This invention can achieve efficient cleaning of the evaporator and shorten downtime. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is a structural view of the present invention.

[0015] Figure 3 for Figure 2 Enlarged view of point A.

[0016] Figure 4 for Figure 3 Enlarged view of point A.

[0017] Figure 5 This is a partial view of the micro-stirrer of this utility model.

[0018] Figure 6 This is a partial view of the bottom end of the guide rod of this utility model.

[0019] In the attached diagram: 1. Top cover; 2. Middle cylinder; 3. Steam heating chamber; 4. Material inlet; 5. Observation mirror; 6. Material buffer tray; 7. First separation tray; 8. Micro-directional injector; 9. Mounting bracket; 10. Second separation tray; 11. Micro agitator; 12. Guide rod; 13. Compressed air pipeline; 14. pH sensor; 15. Motor circuit pipe; 16. Air regulating valve; 17. Air flow sensor; 18. Hollow ring; 19. Air outlet; 20. Air booster; 21. Scraper; 22. Flow stabilizing guide rod. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0022] For ease of explanation, spatial relative terms such as “up,” “down,” “left,” and “right” may be used herein to describe the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, an element described as being “down” of other elements or features would be positioned “up” of those other elements or features. Therefore, the exemplary term “down” can encompass both up and down orientations.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] The present invention will now be described in detail with reference to the accompanying drawings: An evaporator cleaning structure includes a top cover 1, a middle cylinder 2, and a bottom cover connected in sequence. The top cover 1 is provided with an observation mirror 5 and a material inlet 4. The observation mirror 5 is used to observe the cleaning status. Inside the top cover 1, at the material inlet 4, a material buffer plate 6, a first separation plate 7, a micro-directional injector 8, a second separation plate 10, a mounting bracket 9, and several steam tubes are arranged in sequence. The buffer plate is used to reduce the impact generated when the material enters the pipe. The first separation plate 7 performs preliminary separation of the material. The micro-directional injector 8 can spray a chemical agent to loosen the dirt in the steam tubes. The second separation plate 10 performs further separation of the material so that the material can enter the steam tubes more evenly.

[0025] The mounting frame 9 is equipped with a miniature stirrer 11 that matches the position of the steam tube. The miniature stirrer 11 is equipped with an electrical conduit that extends from the outlet of the electrical conduit located on the side wall of the top cover 1. A guide rod 12 is connected to the output shaft of the miniature stirrer 11 and extends into the steam tube. A compressed air pipeline 13 is provided on one side of the guide rod 12 on the mounting frame 9. The bottom end of the compressed air pipeline 13 extends to the bottom end of the guide rod 12 and is connected to a hollow ring 18. An air outlet 19 is provided on the top surface of the hollow ring 18. An air booster 20 is provided on the guide rod 12 and a scraper 21 is connected to the top of the air booster 20. Preferably, a limiting mechanism, such as a key and keyway, is provided between the scraper 21 and the guide rod 12.

[0026] A pH sensor 14 is installed at the output end of the micro stirrer 11.

[0027] Compressed air pipeline 13 is connected to hollow ring 18 via compressed air regulating valve 16. An air flow sensor 17 is installed at the air regulating valve 16 of compressed air pipeline 13. The air flow sensor 17 can work with the controller to adjust the opening of the air regulating valve 16, thereby controlling the flow rate of compressed air, and thus controlling the movement speed of the air booster 20. This causes the air booster 20 to push the scraper 21 upward. During the upward movement of the scraper 21, the micro agitator 11 is activated to rotate the scraper 21 to scrape away the dirt on the inner wall of the steam tube.

[0028] Two flow-stabilizing guide rods 22 are symmetrically arranged along the center between the top surface of the hollow ring 18 and the output end of the micro stirrer 11 to stabilize the flow of the blown air.

[0029] During the sugar production process in the evaporator, the water in the syrup is evaporated through the steam heating chamber 3 inside the evaporator. This process generates steam and a relatively high concentration of syrup. The steam is compressed in the compressor, generating additional heat, which causes dirt to accumulate inside the evaporator tubes and form blockages. Therefore, after each use of the evaporator, a chemical agent is sprayed through the micro-directional injector 8, and the inner wall is scraped. The pH sensor 14 monitors the process in real time. Once the pH value stabilizes within the set range, the dirt removal is observed through the observation mirror 5. After the dirt is cleaned, a passivation protective film reagent is sprayed through the micro-directional injector 8 and finally discharged from the evaporator through the discharge pipe.

[0030] Evaporator cleaning program settings: First, inject chemical reagents for soaking. Use pH sensor 14 and conductivity meter to monitor it in real time. After the reaction rate drops to a certain value, the micro-diameter directional jet cleaner will start automatically (frequency can be set freely) to clean the scale surface (for a certain period of time, which can be set flexibly). After completion, use an endoscope to check whether there are pores in the scale inside. If the monitoring rate meets the standard, continue soaking until the rate drops.

[0031] This invention is equipped with a quantitative agent injection system, a micro-diameter directional spraying system, and a micro-sensor group. The agent injection system is located at the neck of the effect body and is connected to the tank containing the agent via a pipe, allowing for real-time adjustment of the agent temperature. When the cleaning program is started, the micro-diameter directional sprayer first pre-rinses the inside of the effect body, using pure water to remove easily washable dirt from the inner wall of the effect body. Then, the main cleaning is performed, with the agent injection system drawing the agent into the effect body via a pump. The agent dosage can be set via the system. The micro-sensors installed inside the effect body monitor the reaction rate inside the effect body in real time. When the rate drops to a certain value, the used agent is discharged through the drainage system, and the micro-diameter directional sprayer automatically starts. Its telescopic nozzle, equipped with a universal joint, flexibly adjusts the angle to impact the scale layer. This process is timed according to the actual situation to avoid continuous flushing that could damage the inner wall. The air booster 20 is raised and lowered by compressed air, which in turn controls the upward movement of the scraper 21. When the micro-agitator 11 rotates, it drives the guide rod 12 to rotate, which in turn drives the scraper 21 to rotate. At the end of each evaporator operation, the cleaning components are immediately activated to clean the inside of the evaporator tubes, ensuring normal flow within the evaporator tubes and preventing scale buildup that could affect the normal operation of the evaporator. Once the endoscope inside the effect chamber shows that the scale layer has been largely cleaned, a passivating protective agent is evenly sprayed onto the inner wall of the effect chamber by a micro-diameter directional sprayer system to protect the inner wall.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. An evaporator cleaning structure, comprising a top cover (1), a middle cylinder (2), and a bottom cover connected in sequence, characterized in that: The top cover (1) is provided with a material inlet (4). Inside the top cover (1), at the material inlet (4), there are a material buffer plate (6), a first separation plate (7), a micro-directional injector (8), a second separation plate (10), a mounting frame (9), and several steam tubes. The mounting frame (9) is provided with a micro agitator (11) that matches the position of the steam tubes. The output shaft of the micro agitator (11) is connected to a guide rod (12), which extends into the steam tubes. A compressed air pipeline (13) is provided on one side of the guide rod (12) on the mounting frame (9). The bottom end of the compressed air pipeline (13) extends to the bottom end of the guide rod (12). The bottom end of the compressed air pipeline (13) is connected to a hollow ring (18). The top surface of the hollow ring (18) is provided with an air outlet (19). An air booster (20) is provided on the guide rod (12), and a scraper (21) is connected to the top of the air booster (20).

2. The evaporator cleaning structure as described in claim 1, characterized in that: A pH sensor (14) is installed at the output end of the micro stirrer (11).

3. The evaporator cleaning structure as described in claim 1, characterized in that: An observation mirror (5) is provided on the top cover (1).

4. The evaporator cleaning structure as described in claim 1, characterized in that: The compressed air pipeline (13) is connected to the hollow ring (18) through the compressed air regulating valve (16).

5. The evaporator cleaning structure as described in claim 4, characterized in that: An air flow sensor (17) is installed at the air regulating valve (16) of the compressed air pipeline (13).

6. The evaporator cleaning structure as described in claim 1, characterized in that: Two flow-stabilizing guide rods (22) are symmetrically arranged along the center between the top surface of the hollow ring (18) and the output end of the micro stirrer (11).

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