Corn steep liquor evaporator

Abstract

The utility model relates to the technical field of corn steep liquor evaporation, and discloses a corn steep liquor evaporator which comprises an evaporator body, a supporting frame is fixedly connected to the bottom of the evaporator body, a stirring assembly is arranged in the evaporator body, a quick release assembly is arranged on the top of the evaporator body, and the stirring assembly comprises a motor and a first stirring rod. The motor is fixedly connected to the top of the evaporator, the output end of the motor is fixedly connected with a rotating rod, the outer wall of the rotating rod is fixedly connected to one end of the first stirring rod, the other end of the first stirring rod is fixedly connected with a dip angle type stirring blade, and the outer wall of the rotating rod is fixedly connected with a second stirring rod. And the other end of the second stirring rod is fixedly connected with a scraping plate, and the outer wall of the rotating rod is fixedly connected with stirring blades. According to the utility model, the motor drives the stirring blades and the scrapers to mix and stir the interior of the evaporator, and then the anchor type stirring blades stir corn steep liquor deposited at the bottom of the evaporator, so that the corn steep liquor is prevented from being adhered to the inner wall to scale and cause blockage due to high viscosity.

Description

Technical Field

[0001] This utility model relates to the field of corn syrup evaporation technology, and in particular to a corn syrup evaporator. Background Technology

[0002] In the modern bio-fermentation and food processing industry, corn steep liquor, as an important byproduct of wet milling of corn, is rich in nutrients such as protein, amino acids, and vitamins. It is widely used as a culture medium for the fermentation production of antibiotics, amino acids, and enzyme preparations, as well as in feed additives. The evaporation and concentration process of corn steep liquor is a key step in its deep processing and utilization. By removing water, the concentration of effective ingredients is increased, which not only facilitates subsequent drying, storage, and transportation, but also significantly reduces production costs.

[0003] Traditional corn steep liquor evaporators typically employ a shell-and-tube structure. A shell-and-tube evaporator mainly consists of two parts: a heating chamber and an evaporation chamber. The heating chamber contains numerous parallel heat exchange tubes, which serve as the core components for heat transfer. The tube side is used for the flow of corn steep liquor, while the shell side carries a heating medium such as steam. When the corn steep liquor enters the tube side, the steam releases heat in the shell side, transferring it to the corn steep liquor inside the tubes through the tube walls. After absorbing heat, the water in the corn steep liquor gradually vaporizes to form secondary steam. This secondary steam, along with the concentrated corn steep liquor, enters the evaporation chamber. In the evaporation chamber, a gas-liquid separator separates and discharges the secondary steam, while the concentrated corn steep liquor exits from the bottom outlet. This type of evaporator relies on a large heat exchange tube area to provide ample heat transfer surface and is widely used in industrial production for the evaporation and concentration of various solutions.

[0004] However, existing technologies have a significant problem: corn syrup has high viscosity and is prone to scaling. Due to its high viscosity, corn syrup easily adheres to the tube walls when flowing within the heat exchange tubes of a shell-and-tube evaporator. As the evaporation process continues, the water in the corn syrup evaporates, increasing its concentration and viscosity, and further reducing its fluidity. The corn syrup adhering to the tube walls not only reduces the effective contact area between the corn syrup and the heating surface, significantly decreasing heat conduction efficiency and increasing evaporation time and energy consumption, but also gradually forms a scale layer over time, which is difficult to remove. This scale further hinders heat transfer and may even cause pipe blockage, preventing the equipment from operating normally. Frequent shutdowns for cleaning severely reduce production efficiency and also affect the stability of the corn syrup product quality. Therefore, a corn syrup evaporator is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a corn syrup evaporator, which aims to improve the problem of scale buildup on the inner wall of the evaporator due to the increased viscosity of corn syrup in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A corn steep liquor evaporator includes an evaporator, a support frame fixedly connected to the bottom of the evaporator, a stirring assembly inside the evaporator, and a quick-release assembly on the top of the evaporator.

[0008] The stirring assembly includes a motor and a stirring rod one. The motor is fixedly connected to the top of the evaporator. A rotating rod is fixedly connected to the output end of the motor. The rotating rod is fixedly connected to one end of the stirring rod one. An inclined stirring blade is fixedly connected to the other end of the stirring rod one. A stirring rod two is fixedly connected to the outer wall of the rotating rod. A scraper is fixedly connected to the other end of the stirring rod two. A stirring blade is fixedly connected to the outer wall of the rotating rod. An anchor stirring blade is fixedly connected to the bottom of the outer wall of the rotating rod.

[0009] As a further description of the above technical solution:

[0010] The quick-release assembly includes a limiting rod and a connecting tube. The bottom of the connecting tube is fixedly connected to the top of the evaporator, and the top of the connecting tube is fixedly connected to a filter box body.

[0011] As a further description of the above technical solution:

[0012] A bracket is fixedly connected to the bottom of the filter box, and the other end of the bracket is fixedly connected to the top of the evaporator. An inlet is fixedly connected to the top of the filter box.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the filter box is fixedly connected to a slide rail, and a sliding frame is provided inside the filter box. The sliding frame has a sliding groove, and the outer wall of the slide rail is slidably connected to the inner wall of the sliding groove.

[0015] As a further description of the above technical solution:

[0016] A screen is fixedly connected to the inner wall of the sliding frame, and a pull rod is fixedly connected to the outer wall of the sliding frame;

[0017] As a further description of the above technical solution:

[0018] A fixing block is fixedly connected to the outer wall of the sliding frame. The inner wall of the fixing block is slidably connected to the outer wall of the limiting rod. The outer wall of the limiting rod is slidably connected to the limiting block. The outer wall of the limiting block is fixedly connected to the outer wall of the filter box.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the limiting rod is fixedly connected to a latch, and the outer wall of the limiting rod is slidably connected to a fixing block two, the outer wall of the fixing block two being fixedly connected to the outer wall of the filter box.

[0021] As a further description of the above technical solution:

[0022] A spring is fitted on the outer wall of the limiting rod. One end of the spring is fixedly connected to the outer wall of the latch, and the other end of the spring is fixedly connected to the outer wall of the fixing block two. The limiting block two is fixedly connected to the outer wall of the filter box.

[0023] This utility model has the following beneficial effects:

[0024] In this invention, a motor drives a rotating rod, which then stirs the corn slurry inside the evaporator. This scrapes off the corn slurry adhering to the inner wall of the evaporator, improving the fluidity of the corn slurry, increasing its thermal conductivity, and preventing problems such as reduced heat transfer efficiency and pipe blockage caused by increased corn slurry viscosity adhering to the inner wall of the evaporator and forming scale. At the same time, it also prevents uneven heating caused by weakened corn slurry fluidity, which could lead to localized overheating and scaling. This increases work efficiency and improves product quality.

[0025] In this invention, the corn syrup is pretreated by a screen before evaporation to remove impurities. At the same time, the screen is removed by a pull rod for cleaning, which achieves quick disassembly and cleaning of the screen, shortens cleaning time, avoids excessive downtime during screen cleaning, and prevents screen damage from increasing maintenance costs and affecting overall work efficiency. This improves production efficiency and reduces maintenance difficulty and costs. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a corn syrup evaporator proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the rotating rod of a corn syrup evaporator proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a screen for a corn syrup evaporator proposed in this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0030] Legend:

[0031] 1. Evaporator; 2. Support frame; 3. Motor; 4. Rotating rod; 5. Stirring rod one; 6. Inclined stirring blade; 7. Stirring rod two; 8. Scraper; 9. Stirring blade; 10. Anchor stirring blade; 11. Connecting pipe; 12. Filter box body; 13. Feed inlet; 14. Support; 15. Slide rail; 16. Sliding frame; 17. Screen; 18. Sliding groove; 19. Fixed block one; 20. Limiting rod; 21. Limiting block one; 22. Lock; 23. Fixed block two; 24. Spring; 25. Limiting block two; 26. Pull rod. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a corn syrup evaporator, comprising an evaporator 1, a support frame 2 fixedly connected to the bottom of the evaporator 1, a stirring assembly inside the evaporator 1, and a quick-release assembly at the top of the evaporator 1. The stirring assembly includes a motor 3 and a stirring rod 5. The motor 3 is fixedly connected to the top of the evaporator 1, and a rotating rod 4 is fixedly connected to the output end of the motor 3. The rotating rod 4 extends through the internal space of the evaporator 1, and its outer wall is fixedly connected to one end of the stirring rod 5. An angled stirring blade 6 is fixedly connected to the other end of the stirring rod 5. The angled stirring blade 6 has an arc-shaped angled design, and both ends of the angled stirring blade 6 are fixedly connected to the outer wall of the stirring rod 5, enabling it to generate strong axial inclination and radial mixing during rotation. The rotating rod 4 is equipped with a stirring rod 7 fixedly connected to its outer wall. The other end of the stirring rod 7 is fixedly connected to a scraper 8, which is a key anti-scaling component. During rotation, it continuously scrapes off the corn slurry adhering to the inner wall to prevent scaling. The rotating rod 4 is equipped with a stirring blade 9 fixedly connected to its outer wall. The stirring blade 9 is installed at an angle to enhance the radial dispersion of the material. The bottom of the rotating rod 4 is fixedly connected to an anchor stirring blade 10. The anchor stirring blade 10 has a fan-shaped design and can effectively fit the bottom of the evaporator 1. The anchor stirring blade 10 is installed near the bottom of the rotating rod 4 and can effectively stir the corn slurry deposited at the bottom to avoid forming dead flow corners. It is especially suitable for the evaporation treatment of high-concentration corn slurry.

[0034] Reference Figure 1 , Figure 3 and Figure 4The quick-release assembly includes a limiting rod 20 and a connecting pipe 11. The bottom of the connecting pipe 11 is fixedly connected to the top of the evaporator 1, and the top of the connecting pipe 11 is fixedly connected to a filter box body 12. The bottom of the filter box body 12 is fixedly connected to a bracket 14, and the other end of the bracket 14 is fixedly connected to the top of the evaporator 1. The top of the filter box body 12 is fixedly connected to a feed inlet 13. A slide rail 15 is fixedly connected to the inner wall of the filter box body 12, and the slide rail 15 is fixed to both sides inside the filter box body 12. A sliding frame 16 is provided inside the filter box body 12, and the sliding frame 16 has a sliding groove 18. The outer wall of the slide rail 15 is slidably connected to the inner wall of the sliding groove 18. The sliding groove 18 and the slide rail 15 are precisely matched to ensure that the sliding frame 16 can be smoothly pulled out along the slide rail 15. A screen 17 is fixedly connected to the inner wall of the sliding frame 16, and the outer wall of the sliding frame 16 is fixedly connected to... A pull rod 26 is attached, which is used to pull out the sliding frame 16. A fixing block 19 is fixedly connected to the outer wall of the sliding frame 16. The inner wall of the fixing block 19 is slidably connected to the outer wall of the limiting rod 20. The function of the fixing block 19 is to limit the sliding frame 16. A limiting block 21 is slidably connected to the outer wall of the limiting rod 20. The outer wall of the limiting block 21 is fixedly connected to the outer wall of the filter box 12. A latch 22 is fixedly connected to the outer wall of the limiting rod 20. The latch 22 is circular and fixed to the outer wall of the limiting rod 20. It is designed with a pull rod. Pulling the pull rod is used to drive the limiting rod 20 to move and rotate. A fixing block 23 is slidably connected to the outer wall of the limiting rod 20. The outer wall of the fixing block 23 is fixedly connected to the outer wall of the filter box 12. A spring 24 is sleeved on the outer wall of the limiting rod 20. The two ends of the spring 24 are connected to the latch 22 and the fixing block 23, respectively. When the sliding frame 16 is pushed into place, the limiting rod 20 automatically engages with the fixing block 19 under the action of the spring 24, thus locking the sliding frame 16. To disassemble, simply press the latch 22 to release the lock, and then pull the sliding frame 16 along the slide rail 15 using the pull rod 26. The outer wall of the filter box 12 is fixedly connected to the limiting block 25. When disassembling, rotating the latch 22 and pressing it to engage with the bottom of the limiting block 25 will limit the limiting rod 20, making it easier to install and disassemble the sliding frame 16.

[0035] Working principle: When the corn syrup inside the evaporator is evaporated, the motor 3 is turned on, which drives the rotating rod 4 to rotate. Then, the rotation of the rotating rod 4 drives the first stirring rod 5 to rotate. Next, the rotation of the first stirring rod 5 drives the tilting stirring blade 6 to rotate. Then, the rotation of the rotating rod 4 drives the second stirring rod 7 to rotate. Then, the rotation of the second stirring rod 7 drives the scraper 8 to rotate. Next, the rotation of the rotating rod 4 drives the stirring blade 9 to rotate. Then, the rotation of the rotating rod 4 drives the anchor stirring blade 10 to rotate the corn syrup that has settled at the bottom of the evaporator 1. The combined stirring prevents the corn syrup from becoming more viscous after evaporation, which would reduce its fluidity and cause it to accumulate on the inner wall of the evaporator 1. Long-term accumulation will cause scale to form on the outer wall of the evaporator 1, which will reduce the heat transfer efficiency and increase the downtime for cleaning.

[0036] Before evaporating the corn syrup, corn syrup is fed into the feed inlet 13 and impurities are removed by screening through the screen 17. When the screen 17 needs to be cleaned later, first rotate the locking buckle 22, and pull down the locking buckle 22 to move the limiting rod 20 out of the fixed block 19. Then move the locking buckle 22 to the bottom of the limiting block 25, and then rotate the locking buckle 22 to the bottom of the limiting block 25 to limit the limiting rod 20. Then pull the lever 26 to pull out the sliding frame 16. This avoids excessive downtime when cleaning the screen, and also avoids the screen being damaged and unable to be disassembled, which would increase maintenance costs and affect overall work efficiency. This improves production efficiency and reduces maintenance difficulty and costs.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A corn syrup evaporator, comprising an evaporator (1), characterized in that: The bottom of the evaporator (1) is fixedly connected to a support frame (2), the evaporator (1) is equipped with a stirring assembly, and the top of the evaporator (1) is equipped with a quick-release assembly. The stirring assembly includes a motor (3) and a stirring rod (5). The motor (3) is fixedly connected to the top of the evaporator (1). A rotating rod (4) is fixedly connected to the output end of the motor (3). The outer wall of the rotating rod (4) is fixedly connected to one end of the stirring rod (5). An inclined stirring blade (6) is fixedly connected to the other end of the stirring rod (5). A second stirring rod (7) is fixedly connected to the outer wall of the rotating rod (4). A scraper (8) is fixedly connected to the other end of the second stirring rod (7). A stirring blade (9) is fixedly connected to the outer wall of the rotating rod (4). An anchor stirring blade (10) is fixedly connected to the bottom of the outer wall of the rotating rod (4).

2. The corn syrup evaporator according to claim 1, characterized in that: The quick-release assembly includes a limiting rod (20) and a connecting pipe (11). The bottom of the connecting pipe (11) is fixedly connected to the top of the evaporator (1), and the top of the connecting pipe (11) is fixedly connected to a filter box body (12).

3. A corn syrup evaporator according to claim 2, characterized in that: The bottom of the filter box (12) is fixedly connected to a bracket (14), the other end of the bracket (14) is fixedly connected to the top of the evaporator (1), and the top of the filter box (12) is fixedly connected to a feed inlet (13).

4. A corn syrup evaporator according to claim 3, characterized in that: The filter box body (12) is fixedly connected to the inner wall of the slide rail (15), and the filter box body (12) is provided with a sliding frame (16). The sliding frame (16) has a sliding groove (18), and the outer wall of the slide rail (15) is slidably connected to the inner wall of the sliding groove (18).

5. A corn syrup evaporator according to claim 4, characterized in that: A screen (17) is fixedly connected to the inner wall of the sliding frame (16), and a pull rod (26) is fixedly connected to the outer wall of the sliding frame (16).

6. A corn syrup evaporator according to claim 5, characterized in that: The outer wall of the sliding frame (16) is fixedly connected to a fixing block (19), the inner wall of the fixing block (19) is slidably connected to the outer wall of the limiting rod (20), the outer wall of the limiting rod (20) is slidably connected to a limiting block (21), and the outer wall of the limiting block (21) is fixedly connected to the outer wall of the filter box body (12).

7. A corn syrup evaporator according to claim 6, characterized in that: The outer wall of the limiting rod (20) is fixedly connected to a buckle (22), and the outer wall of the limiting rod (20) is slidably connected to a fixing block two (23). The outer wall of the fixing block two (23) is fixedly connected to the outer wall of the filter box body (12).

8. A corn syrup evaporator according to claim 7, characterized in that: The outer wall of the limiting rod (20) is fitted with a spring (24), one end of the spring (24) is fixedly connected to the outer wall of the latch (22), and the other end of the spring (24) is fixedly connected to the outer wall of the fixing block two (23). The outer wall of the filter box body (12) is fixedly connected to the limiting block two (25).

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