Double-effect evaporator for protein concentration and purification in chicken meal production

Abstract

The utility model relates to the technical field of purification discloses a protein concentration purification two -effect evaporator for chicken powder preparation, including the evaporating bucket, the top end sliding connection of evaporating bucket has the fixed plate, the top end middle part of fixed plate is equipped with the accommodation groove, the top end rotation of fixed plate is connected with the fender, the inwall left side of accommodation groove is fixedly connected with control chip, the inwall right side of accommodation groove is fixedly connected with power regulator, the bottom middle part of fixed plate is fixedly connected with a plurality of inner layer heating pipe, the bottom of fixed plate is fixedly connected with a plurality of outer layer heating pipe, the inwall of evaporating bucket is fixedly connected with a plurality of temperature sensor. In the utility model, through control chip control servo motor, drive the stirring blade to the protein solution in the barrel stirring, simultaneously inner layer heating pipe and outer layer heating pipe cooperate heating, and servo motor two can drive auxiliary stirrer, reduce the temperature difference in the barrel, accelerate the evaporation speed of solution.

Description

Technical Field

[0001] This utility model relates to the field of purification technology, and in particular to a two-effect evaporator for protein concentration and purification in the preparation of chicken powder. Background Technology

[0002] The double-effect evaporator for protein concentration and purification in chicken meal preparation is an energy-saving evaporation and concentration device designed for the efficient recovery of proteins from chicken processing by-products such as minced meat and bone residue. The core principle of the device is to form a stepped thermal energy cycle through two evaporation effects, using the latent heat of high-temperature steam to drive the low-temperature evaporation process, thereby achieving gradient concentration of materials. By controlling the temperature and pressure in different effects, energy consumption is reduced while avoiding denaturation and inactivation of proteins caused by prolonged exposure to high temperatures. The double-effect evaporator has the dual advantages of high concentration efficiency and component protection, which can greatly improve product yield and quality.

[0003] However, the uneven distribution of heating tubes in the double-effect evaporator leads to uneven heating of the chicken powder solution during evaporation. Local overheating causes protein denaturation, affecting product quality, while insufficient heating reduces evaporation efficiency. Existing solutions involve symmetrical distribution or spiral arrangement based on the shape and size of the evaporator to ensure uniform heating of the solution. However, even with optimized heating tube layout, slight temperature differences still exist due to the complex flow state of the solution within the evaporator, posing a risk of denaturation for temperature-sensitive proteins. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a dual-effect evaporator for protein concentration and purification in chicken powder preparation, aiming to improve the problem in the prior art that the complex flow state of the solution inside the evaporator leads to the risk of denaturation of proteins that are extremely sensitive to temperature.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a dual-effect evaporator for protein concentration and purification in chicken powder preparation, comprising an evaporation tank, a fixed plate slidably connected to the top of the evaporation tank, a placement groove formed in the middle of the top of the fixed plate, a protective plate rotatably connected to the top of the fixed plate, a control chip fixedly connected to the left side of the inner wall of the placement groove, a power regulator fixedly connected to the right side of the inner wall of the placement groove, multiple inner heating tubes fixedly connected to the middle of the bottom of the fixed plate, multiple outer heating tubes fixedly connected to the bottom of the fixed plate, multiple temperature sensors fixedly connected to the inner wall of the evaporation tank, a servo motor I fixedly connected to the middle of the bottom of the fixed plate, an elastic coupling fixedly connected to the output end of the servo motor I, a stirring shaft fixedly connected to the bottom end of the elastic coupling, multiple stirring blades fixedly connected to the outer side of the stirring shaft, multiple servo motor II fixedly connected to the outer side of the evaporation tank, the output ends of the multiple servo motor II all penetrating the evaporation tank and fixedly connected to an auxiliary stirrer, and a cleaning mechanism provided at the rear of the evaporation tank for cleaning the inside of the evaporation tank.

[0006] As a further description of the above technical solution:

[0007] The cleaning mechanism includes a water tank, the front of which is fixedly connected to the outer rear end of the evaporation tank. A powerful water pump is fixedly connected to the top of the water tank, and a water inlet pipe is connected to the top of the powerful water pump. An annular water box is fixedly connected to the bottom of the fixed plate, and the other end of the water inlet pipe is connected to the top of the annular water box. Multiple water delivery hoses are fixedly connected to the bottom of the annular water box, and a nozzle is fixedly connected to the bottom of each of the multiple water delivery hoses. Multiple fixing blocks are fixedly connected to the bottom of the fixed plate, and electric push rods are fixedly connected to the opposite sides of each of the multiple fixing blocks. A transition block is fixedly connected to the top of each of the multiple electric push rods.

[0008] As a further description of the above technical solution:

[0009] The fixed plate is fixedly connected to sliders on both the left and right sides, and the top of the evaporation tank is provided with sliding grooves on both the left and right sides.

[0010] As a further description of the above technical solution:

[0011] An observation hole is provided on the front side of the evaporation tank, and an observation window is provided on the inner wall of the observation hole.

[0012] As a further description of the above technical solution:

[0013] A pin is fixedly connected to the top left side of the fixing plate, and a rotating shaft is fixedly connected to the top left side of the protective plate.

[0014] As a further description of the above technical solution:

[0015] The bottom of the evaporation tank is fixedly connected to a support frame, and the bottom of the support frame is fixedly connected to multiple rubber feet.

[0016] As a further description of the above technical solution:

[0017] The outer side of the fixing plate is provided with a ventilation groove, and the ventilation groove is designed in a ring shape.

[0018] As a further description of the above technical solution:

[0019] A control panel is fixedly connected to the right side of the evaporation tank. The control panel is electrically connected to a powerful water pump, an electric push rod, a control chip, a power regulator, a temperature sensor, servo motor one, and servo motor two.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the servo motor is directly controlled by the control chip, which drives multiple stirring blades to stir the protein solution in the evaporation tank. At the same time, the inner and outer heating tubes heat different parts of the tank. The start of the second servo motor drives the auxiliary stirrer to further stir the solution in the tank, reducing the temperature difference in various parts of the evaporation tank and accelerating the evaporation rate of the protein solution.

[0022] 2. In this utility model, a powerful water pump draws and pressurizes the water in the water tank. The pressurized water is transported through the inlet pipe, the annular water box and the water delivery hose, and finally sprayed out from multiple nozzles. Multiple electric push rods can adjust the direction of the water flowing out of the nozzles, so that the pressurized water can clean different parts of the evaporation tank, reducing the possibility of impurities remaining in the tank. Attached Figure Description

[0023] Figure 1 This is a perspective view of a two-effect evaporator for protein concentration and purification in the preparation of chicken powder according to the present invention.

[0024] Figure 2 This is a schematic diagram of the control chip of a protein concentration and purification double-effect evaporator for chicken powder preparation proposed in this utility model;

[0025] Figure 3 This is a cross-sectional view of the evaporation tank of a two-effect evaporator for protein concentration and purification in the preparation of chicken powder according to the present invention.

[0026] Figure 4 This is a schematic diagram of the annular water box of a two-effect evaporator for protein concentration and purification in the preparation of chicken powder according to the present invention.

[0027] Figure 5 This is a schematic diagram of the water supply hose of a two-effect evaporator for protein concentration and purification in the preparation of chicken powder, as proposed in this utility model.

[0028] Legend:

[0029] 1. Evaporation tank; 2. Cleaning mechanism; 201. Water tank; 202. Powerful water pump; 203. Water inlet pipe; 204. Annular water box; 205. Water supply hose; 206. Nozzle; 207. Fixing block; 208. Electric push rod; 209. Adapter block; 3. Fixing plate; 4. Installation slot; 5. Protective plate; 6. Control chip; 7. Power regulator; 8. Inner heating tube; 9. Outer heating tube; 10. Temperature sensor; 11. Servo motor one; 12. Flexible coupling; 13. Stirring shaft; 14. Stirring blade; 15. Servo motor two; 16. Auxiliary stirrer; 17. Slide; 18. Sliding block; 19. Observation hole; 20. Observation window; 21. Rotating shaft; 22. Pin shaft; 23. Support frame; 24. Rubber feet; 25. Control panel; 26. Ventilation slot. Detailed Implementation

[0030] 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.

[0031] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a protein concentration and purification double-effect evaporator for chicken powder preparation, comprising an evaporation tank 1, a fixing plate 3 slidably connected to the top of the evaporation tank 1, the fixing plate 3 being used to install a servo motor 11, thereby enabling uniform heat distribution within the evaporation tank 1, a mounting groove 4 being provided in the middle of the top of the fixing plate 3, the mounting groove 4 being used to place a power regulator 7, a protective plate 5 being rotatably connected to the top of the fixing plate 3, the protective plate 5 being used to protect a control chip 6, and a control chip 6 being fixedly connected to the left side of the inner wall of the mounting groove 4, through which the servo motor 11 can be controlled. The servo motor 11 is directly controlled and allows the operator to connect to the device wirelessly. A power regulator 7 is fixedly connected to the right side of the inner wall of the mounting slot 4. The power regulator 7 is used to quickly adjust the power of the servo motor 11. Multiple inner heating tubes 8 are fixedly connected to the middle of the bottom end of the fixing plate 3, and multiple outer heating tubes 9 are fixedly connected to the bottom end of the fixing plate 3. The multiple inner heating tubes 8 and multiple outer heating tubes 9 can provide heating space for hot steam. Multiple temperature sensors 10 are fixedly connected to the inner wall of the evaporation tank 1. The multiple temperature sensors 10 are used to detect the temperature of the evaporation tank 1. The temperature varies at different locations within the evaporator. A servo motor 11 is fixedly connected to the bottom center of the fixed plate 3. The servo motor 11 provides power for the rotation of multiple stirring blades 14. A flexible coupling 12 is fixedly connected to the output end of the servo motor 11. The flexible coupling 12 is used to compensate for the axial error between the output shaft of the servo motor 11 and the stirring shaft 13. The bottom end of the flexible coupling 12 is fixedly connected to the stirring shaft 13, which is used to transmit power. Multiple stirring blades 14 are fixedly connected to the outer side of the stirring shaft 13. Multiple stirring blades 14 can increase the stirring range. The outer side of the evaporator 1... Multiple servo motors 15 are fixedly connected to the evaporator 16, which provides power to the auxiliary stirrer 16. The output ends of the multiple servo motors 15 all pass through the evaporator 1 and are fixedly connected to the auxiliary stirrer 16. The auxiliary stirrer 16 can increase the heat distribution range and make the heat distribution in the evaporator 1 uniform. A cleaning mechanism 2 is provided on the rear side of the evaporator 1. The cleaning mechanism 2 is used to clean the inside of the evaporator 1. Slider 18 is fixedly connected to the left and right sides of the fixed plate 3. Slide grooves 17 are opened on the left and right sides of the top of the evaporator 1, and the slider 18 can slide in the slide grooves 17.

[0032] Specifically, in the chicken powder preparation process, the protein concentration and purification double-effect evaporator is started. First, the equipment is turned on via the control panel 25. The control chip 6 is used to directly control the operation of the servo motor 11, monitor the temperature in the placement tank 4, and also supports remote operation by the operator using wireless technology. The power regulator 7 starts working, quickly adjusting the power of the servo motor 11 according to actual needs to ensure that the servo motor 11 outputs appropriate power. After the servo motor 11 starts, the power is transmitted to the stirring shaft 13 through the flexible coupling 12. The flexible coupling 12 effectively compensates for the axial error between the output shaft of the servo motor 11 and the stirring shaft 13, ensuring stable power transmission. The stirring shaft 13 drives multiple outer stirring blades 14 at high speed. The rotation stirs the chicken powder solution in the evaporation tank 1, expanding the stirring range and accelerating solution mixing. At the same time, the inner heating tube 8 and the outer heating tube 9 provide heating space for hot steam to heat and evaporate the solution. Multiple temperature sensors 10 on the inner wall of the evaporation tank 1 detect the temperature at different locations inside the tank in real time and feed the data back to the control panel 25. The power regulator 7 further adjusts the power of the servo motor 11 to ensure uniform heat distribution inside the evaporation tank 1. Meanwhile, multiple servo motors 15 on the outer side of the evaporation tank 1 also start to operate, driving the auxiliary stirrer 16 to work. The auxiliary stirrer 16 stirs the solution from different angles, further increasing the range of heat dispersion and assisting in stirring to make the heat more evenly distributed in the solution.

[0033] Reference Figure 3 , Figure 4 and Figure 5The cleaning mechanism 2 includes a water tank 201, the front of which is fixedly connected to the outer rear end of the evaporation tank 1. The water tank 201 is used to store a large amount of clean water. A powerful water pump 202 is fixedly connected to the top of the water tank 201. The powerful water pump 202 is used to draw water from the water tank 201 and pressurize it. The top of the powerful water pump 202 is connected to a water inlet pipe 203, which is used to transmit the pressurized water. An annular water box 204 is fixedly connected to the bottom end of the fixing plate 3. The pressurized water can be sprayed out from multiple nozzles 206 through the annular water box 204. The other end of the water inlet pipe 203 is connected to the top end of the annular water box 204. Multiple water delivery hoses 205 are fixedly connected to the bottom end of the annular water box 204. Multiple water supply hoses 205 can transport pressurized water and can rotate freely. The bottom ends of the multiple water supply hoses 205 are all fixedly connected to nozzles 206. The nozzles 206 are the components that spray pressurized water. The bottom end of the fixing plate 3 is fixedly connected to multiple fixing blocks 207. The multiple fixing blocks 207 are used to fix electric push rods 208. The electric push rods 208 are fixedly connected to the opposite sides of the multiple fixing blocks 207. The electric push rods 208 are used to adjust the spray direction of the nozzles 206. The top ends of the multiple electric push rods 208 are all fixedly connected to adapter blocks 209. The adapter blocks 209 are fixedly connected to the adjacent nozzles 206 respectively. The adapter blocks 209 are used to connect the electric push rods 208 and the nozzles 206.

[0034] Specifically, the powerful water pump 202 is turned on, drawing clean water from the water tank 201 and pressurizing it. The pressurized water is then transported through the inlet pipe 203, which smoothly delivers the water to the annular water box 204. The annular water box 204 receives the pressurized water from the inlet pipe 203 and then delivers the water to each nozzle 206 through multiple water delivery hoses 205. Because the water delivery hoses 205 can rotate freely, the nozzles 206 are not restricted by the water delivery pipe when adjusting their position, ensuring that the nozzles 206 can be flexibly adjusted. When it is necessary to adjust the spray direction of the nozzles 206... When performing targeted cleaning of different parts inside the evaporator, the electric push rod 208 fixed on the fixing block 207 is activated. The electric push rod 208 begins to extend and retract, driving the nozzle 206 connected to it to change its angle through the adapter block 209, so that the nozzle 206 is aimed at the target area, thereby achieving precise cleaning. After adjusting the position and angle of the nozzle 206, pressurized water is sprayed out from the nozzle 206 to rinse the inside of the evaporation tank 1. The high-pressure water jet sprayed from the nozzle 206 can effectively wash away the chicken powder residue and dirt adhering to the inner wall of the evaporation tank 1, the surface of the heating tube, and the stirring shaft 13, thus completing the cleaning of the evaporator.

[0035] Reference Figure 1 , Figure 2 and Figure 3An observation hole 19 is provided on the front side of the evaporation tank 1, and an observation window 20 is provided on the inner wall of the observation hole 19. The observation window 20 allows the operator to observe the inside of the evaporation tank 1. A pin 22 is fixedly connected to the top left side of the fixing plate 3, and a rotating shaft 21 is fixedly connected to the top left side of the protective plate 5. The pin 22 and the rotating shaft 21 facilitate the opening and closing of the protective plate 5. A support frame 23 is fixedly connected to the bottom of the evaporation tank 1. The support frame 23 can increase the height of the evaporation tank 1 to prepare for the removal of protein powder. Multiple rubber feet 2 are fixedly connected to the bottom of the support frame 23. 4. Multiple rubber feet 24 can reduce the friction between the device and the ground. A ventilation groove 26 is provided on the outside of the fixing plate 3. The ventilation groove 26 is used for ventilation inside the evaporation tank 1 and is located in a concealed position to prevent external debris from entering the evaporation tank 1. The ventilation groove 26 adopts a ring-shaped design. A control panel 25 is fixedly connected to the right side of the outside of the evaporation tank 1. The control panel 25 is electrically connected to the powerful water pump 202, the electric push rod 208, the control chip 6, the power regulator 7, the temperature sensor 10, the servo motor 11 and the servo motor 25 respectively.

[0036] Specifically, the device is placed on the ground, and the rubber feet 24 reduce friction between the device and the ground, while also providing some shock absorption to ensure the stability of the equipment during operation. The protective plate 5 is opened and closed through the cooperation of the pin 22 and the rotating shaft 21. After opening, the control chip 6 and the power regulator 7 can be checked or adjusted to ensure normal operation. The observation window 20 allows the operator to directly observe the inside of the evaporation tank 1. During the operation of the equipment, the operator can also observe the situation inside the evaporation tank 1 at any time through the observation window 20, such as changes in the solution level and the generation of foam. At the same time, the control panel 25 displays the temperature data detected by the temperature sensor 10 and the operating status information of the servo motor in real time. The operator can adjust the operating parameters of the equipment according to the information. If it is found that the ventilation inside the evaporation tank 1 is not smooth, the ventilation groove 26 adopts a ring design and is hidden in position, which can ensure ventilation while preventing the entry of external debris. The ventilation groove 26 can be checked for blockage and cleaned in time.

[0037] Working Principle: Control chip 6, as the intermediate core control element, directly controls the operation of servo motor 11, determining its running state and speed. It also monitors the temperature within the placement tank 4 to ensure a stable working environment. Furthermore, it provides wireless connection support for remote operation. Power regulator 7 quickly adjusts the power of servo motor 11 based on actual production demands for stirring power, ensuring the servo motor 11 outputs appropriate power. After servo motor 11 starts, power is transmitted to the stirring shaft 13 via flexible coupling 12. Flexible coupling 12 compensates for shaft misalignment, ensuring smooth rotation of the stirring shaft 13, which in turn drives multiple stirring blades 14 to rotate at high speed. The stirring blades 14 stir the chicken powder solution within the evaporation tank 1, expanding the stirring range. To accelerate solution mixing, the inner heating tube 8 and outer heating tube 9 start working, providing space for hot steam. The hot steam releases heat to heat and evaporate the solution. Meanwhile, multiple temperature sensors 10 on the inner wall of the evaporation tank 1 monitor the temperature at different locations in real time and feed the data back to the control panel 25. When the temperature in a certain area is low, the power of the servo motor 11 is appropriately increased to speed up the stirring and promote heat transfer. When the temperature is too high, the power is reduced to prevent local overheating and ensure that the heat is evenly distributed in the evaporation tank 1. Multiple servo motors 15 on the outside of the evaporation tank 1 start synchronously, driving the auxiliary stirrer 16 to operate. The auxiliary stirrer 16 stirs the solution from different angles, further expanding the heat dispersion range in the solution, improving the uniformity of the solution heating, and improving the efficiency and quality of protein concentration and purification.

[0038] Furthermore, the powerful water pump 202, acting as a power source, utilizes its internal mechanical structure to generate a strong suction force, drawing clean water from the water tank 201. Simultaneously, it applies pressure to the drawn water, giving it higher kinetic energy. The pressurized water, within the inlet pipe 203, converts pressure energy into kinetic energy, flowing rapidly along the inlet pipe 203 and stably delivering the water to the annular water box 204. The annular water box 204 collects and distributes the water flow, ensuring that the water is evenly distributed to each water delivery hose 205. The water delivery hoses 205 are made of flexible and rotatable materials, allowing them to bend freely with the movement of the nozzle 206 when adjusting its position, without obstructing the adjustment of the nozzle 206's position. When the nozzle 206 sprays in the correct direction, the electric push rod 208 extends and retracts. The fixing block 207 provides a stable mounting base for the electric push rod 208, and the adapter block 209 transmits the extension and retraction of the electric push rod 208 to the nozzle 206, allowing the nozzle 206 to adjust its angle around the connection point with the adapter block 209. This allows for precise aiming at different parts of the evaporator that need cleaning. Once the nozzle 206 is adjusted to the appropriate position and angle, pressurized water supplied from the annular water box 204 through the water hose 205 is sprayed out of the nozzle 206 at high speed. The powerful impact force overcomes the adhesion between dirt and the equipment surface, causing the dirt to detach from the equipment surface. At the same time, the flushing action of the water flow carries away the detached dirt, thus completing the cleaning of the inside of the evaporator.

[0039] 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 double-effect evaporator for the concentration and purification of proteins for the preparation of chicken meal, comprising an evaporation tank (1), characterized in that: A fixing plate (3) is slidably connected to the top of the evaporator (1). A mounting groove (4) is provided in the middle of the top of the fixing plate (3). A protective plate (5) is rotatably connected to the top of the fixing plate (3). A control chip (6) is fixedly connected to the left side of the inner wall of the mounting groove (4). A power regulator (7) is fixedly connected to the right side of the inner wall of the mounting groove (4). Multiple inner heating tubes (8) are fixedly connected to the middle of the bottom of the fixing plate (3). Multiple outer heating tubes (9) are fixedly connected to the bottom of the fixing plate (3). Multiple temperature sensors (10) are fixedly connected to the inner wall of the evaporator (1). A servo motor (11) is fixedly connected in the middle. The output end of the servo motor (11) is fixedly connected to a flexible coupling (12). The bottom end of the flexible coupling (12) is fixedly connected to a stirring shaft (13). Multiple stirring blades (14) are fixedly connected to the outside of the stirring shaft (13). Multiple servo motors (15) are fixedly connected to the outside of the evaporation tank (1). The output ends of the multiple servo motors (15) all pass through the evaporation tank (1) and are fixedly connected to an auxiliary stirrer (16). A cleaning mechanism (2) is provided on the rear side of the evaporation tank (1). The cleaning mechanism (2) is used to clean the inside of the evaporation tank (1).

2. A double effect evaporator for the concentration and purification of proteins for the preparation of chicken meal according to claim 1, characterized in that: The cleaning mechanism (2) includes a water tank (201), the front side of which is fixedly connected to the outer rear end of the evaporation tank (1), a powerful water pump (202) is fixedly connected to the top of the water tank (201), a water inlet pipe (203) is connected to the top of the powerful water pump (202), an annular water box (204) is fixedly connected to the bottom end of the fixing plate (3), the other end of the water inlet pipe (203) is connected to the top end of the annular water box (204), a plurality of water supply hoses (205) are fixedly connected to the bottom end of the plurality of water supply hoses (205), a nozzle (206) is fixedly connected to the bottom end of the plurality of water supply hoses (205), a plurality of fixing blocks (207) are fixedly connected to the bottom end of the fixing plate (3), an electric push rod (208) is fixedly connected to the opposite side of the plurality of fixing blocks (207), and an adapter block (209) is fixedly connected to the top end of the plurality of electric push rods (208).

3. A double effect evaporator for concentration and purification of protein for chicken meal preparation as claimed in claim 1 wherein: The left and right sides of the fixed plate (3) are fixedly connected with sliders (18), and the top left and right sides of the evaporation tank (1) are provided with sliding grooves (17).

4. A double effect evaporator for concentration and purification of protein for chicken meal preparation as claimed in claim 1 wherein: An observation hole (19) is provided on the front side of the evaporation tank (1), and an observation window (20) is provided on the inner wall of the observation hole (19).

5. A double effect evaporator for concentration and purification of protein for chicken meal preparation as claimed in claim 1 wherein: A pin (22) is fixedly connected to the top left side of the fixed plate (3), and a rotating shaft (21) is fixedly connected to the top left side of the protective plate (5).

6. A double effect evaporator for the concentration and purification of protein for the preparation of chicken meal according to claim 1, characterized by the fact that: The bottom of the evaporation tank (1) is fixedly connected to a support frame (23), and the bottom of the support frame (23) is fixedly connected to multiple rubber feet (24).

7. A double effect evaporator for the concentration and purification of protein for the preparation of chicken meal according to claim 1, characterized by the fact that: The outer side of the fixing plate (3) is provided with a ventilation groove (26), and the ventilation groove (26) is designed in a ring shape.

8. A double effect evaporator for the concentration and purification of protein for the preparation of chicken meal according to claim 1, characterized by the fact that: The control panel (25) is fixedly connected to the right side of the outer side of the evaporation tank (1). The control panel (25) is electrically connected to the powerful water pump (202), the electric push rod (208), the control chip (6), the power regulator (7), the inner heating tube (8), the outer heating tube (9), the temperature sensor (10), the servo motor one (11), and the servo motor two (15).

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