Cooking machine for fish meal production

Abstract

The utility model relates to the field of cooking machines, in particular to a cooking machine for fish meal production, and aims to solve the technical problems that feed liquid of fish meal is easily coked in an evaporator during cooking, and the fish meal is difficult to heat to an enough temperature due to a short flowing path during secondary heating, vaporization and separation. According to the technical scheme, the cooking machine for fish meal production comprises an evaporation bin, a feeding opening, an evaporator, a fluid pump press, a pumping pipe, a secondary heating bin, an oil bath heating unit, a mixing mechanism, a heat exchange unit and an annular heating pipe; according to the fish meal evaporator, the oil bath heating unit is arranged in the evaporator, fish meal feed liquid is slowly cooked and heated from inside to outside, compared with a traditional external heating mode, the feed liquid is not prone to coking on the inner wall of the evaporator, material loss is reduced, the heat exchange unit with a lengthy path is adopted to replace an original straight pipe type heat exchange pipe, and the heat exchange efficiency is improved. Feed liquid can be fully heated in the flowing process, so that vapor and liquid are thoroughly separated, and the treatment effect is better.

Description

Technical Field

[0001] The utility model relates to the field of steaming and boiling machines, in particular to a steaming and boiling machine for producing fish meal. Background Art

[0002] Fish meal is a high-protein substance made from one or more fish as raw materials, which is processed by cooking, pressing, separation and crushing. It has a wide variety of trace elements, good balance and extremely high nutritional value. It is widely used in the feeding of livestock, aquatic animals and fur animals, especially young animals. When producing fish meal, the material needs to be concentrated into liquid through an evaporator, and then the liquid is added from the upper tube box of the falling film evaporator heating chamber. The falling film evaporation is carried out by the liquid distribution and film forming unit, and evenly distributed to each heat exchange tube. Under the action of gravity, vacuum induction and airflow, it flows from top to bottom in a uniform film. During the flow process, it is heated and vaporized by the heating medium, and the generated steam and liquid enter the separation chamber of the evaporator together. After the vapor and liquid are fully separated, the steam enters the condenser for condensation (single-effect operation) or enters the next-effect evaporator as a heating medium, thereby realizing multi-effect operation. The liquid is discharged from the separation chamber for the final forming of the fish meal.

[0003] During the entire evaporation process, the liquid is boiled in the evaporator because it contains high protein. Therefore, it is easy to be carbonized at high temperature when it comes into direct contact with the inner wall of the evaporator. The evaporator needs to be cleaned frequently. Moreover, when the liquid flows in the heat exchange tube for secondary heating and vaporization, because the heat exchange tubes used are generally straight tube structures, the liquid flow path is short and it is difficult to fully heat it to a sufficient temperature, resulting in incomplete vapor-liquid separation.

[0004] Therefore, in view of the fact that the above-mentioned fish meal liquid is easily coked in the evaporator during cooking, and it is difficult to heat to a sufficient temperature during secondary heating and vaporization separation due to the short flow path, resulting in insufficient vapor-liquid separation, an improved cooking machine can be designed. The original cooking system is used, and an oil bath heating unit is set in the cooker. The long-path heat exchange tube is used to achieve sufficient secondary heating, thereby improving the separation effect of the fish meal raw material liquid. Utility Model Content

[0005] In order to overcome the problem that the fish meal liquid is easily coked in the evaporator during cooking, and it is difficult to heat to a sufficient temperature during secondary heating and vaporization separation due to the short flow path.

[0006] The technical scheme of the utility model is: a fish meal production cooking machine, comprising an evaporation bin, a feeding port, an evaporator, a fluid pump, a pumping pipe, a secondary heating bin, an oil bath heating unit, a mixing mechanism, a heat exchange unit, and an annular heating pipe; the secondary heating bin is fixedly installed at the right end of the evaporation bin, the evaporator is installed in the evaporation bin and a feeding port connected to the evaporator is arranged at the upper end of the evaporation bin, the oil bath heating unit and the mixing mechanism are arranged in the evaporation bin, the right end of the evaporator is fixedly connected with a pumping pipe extending into the secondary heating bin, A fluid pump press connected to the evaporator and the pumping pipe is installed at the lower end of the evaporation bin, a heat exchange unit connected to the right end of the pumping pipe is arranged in the secondary heating bin, an annular heating pipe surrounding the outside of the heat exchange unit is installed on the inner wall of the secondary heating bin, a liquid distribution and film-forming unit is built into the evaporator, the left end of the pumping pipe is connected to the liquid distribution and film-forming unit, the fluid pump press is connected to the liquid distribution and film-forming unit, the annular heating pipe has a built-in heating resistor and is externally powered by AC power, and the heating temperature of the annular heating pipe is 200-300 degrees Celsius.

[0007] Preferably, an oil bath heating unit is provided in the evaporator to slowly cook and heat the fish meal liquid from the inside out, and the vapor-liquid mixture is pressurized by a fluid pump press through a pumping pipe and pumped into the heat exchange unit. The liquid can be fully heated during the flow process, and secondary heating vaporization is formed in the secondary heating bin to ensure complete separation of vapor and liquid.

[0008] Preferably, the oil bath heating unit comprises a heat-conducting ball and a heater; the heat-conducting ball is a hollow spherical structure made of ceramic material and is filled with heat-conducting oil; the heater is installed on the outer wall of the evaporator and the heating element of the heater extends into the heat-conducting ball; after closing the feeding port, the heater heats the heat-conducting oil in the heat-conducting ball, and the temperature of the oil rises slowly, transferring the heat to the surrounding areas to the fish meal liquid in the evaporator, cooking it, and performing falling film evaporation through the liquid distribution and film-forming unit in the evaporator.

[0009] Preferably, the mixing mechanism includes a driving machine and a mixing rack; the driving machine is installed in the evaporator through a bracket, and the lower end of the transmission element of the driving machine is fixedly connected to the mixing rack adapted to the shape of the heat-conducting ball. The mixing rack reciprocates between the outer wall of the heat-conducting ball and the inner wall of the evaporator, and the rotation angle is 300 degrees. During the cooking process of the fish meal liquid, the driving machine controls the reciprocating rotation of the mixing rack to stir the liquid to flow continuously, thereby further reducing the possibility of carbonization of the liquid on the heat-conducting ball.

[0010] Preferably, a silo with a bottom wall inclined downward to the right is fixedly installed at the lower end of the secondary heating bin, the bottom of the heat exchange unit extends downward into the silo, and a liquid outlet is provided at the right end of the silo. The vapor and liquid in the heat exchange unit flow into the silo from top to bottom in a uniform film under the action of gravity, vacuum induction and airflow. The steam floats upward in the silo, and the liquid flows along the bottom wall of the silo and is discharged from the liquid outlet.

[0011] Preferably, a steam overflow port in the secondary heating bin is provided at the upper left end of the silo, a valve port is provided at the upper end of the secondary heating bin and a gate valve mechanism is installed on the valve port, the steam entering the silo is discharged into the secondary heating bin through the steam overflow port, and when the valve port is closed, as the steam continues to accumulate, the pressure in the secondary heating bin increases, the annular heating pipe further increases the steam heat, the heat exchange unit is heated for a second time, and the subsequent vapor-liquid mixture is forced to further separate.

[0012] Preferably, the heat exchange unit includes a No. 1 horizontal tube, an S-shaped bend and a No. 1 vertical tube; the No. 1 horizontal tube is fixedly connected to the right end of the pumping pipe, and 5-8 groups of S-shaped bends are fixedly connected to the lower end of the No. 1 horizontal tube at equal intervals, and the lower end of the S-shaped bend is fixedly connected to a No. 1 vertical tube extending into the silo, and the vapor-liquid mixture flowing into the No. 1 horizontal tube is evenly distributed to each S-shaped bend, and flows downward step by step in a film-like manner along the S-shaped bend through the action of airflow. During the flow process, the high-temperature steam in the secondary heating bin transfers heat to the vapor-liquid mixture in the S-shaped bend again.

[0013] Preferably, the heat exchange unit includes a No. 2 transverse tube, a double helix tube, and a No. 2 longitudinal tube; the No. 2 transverse tube is fixedly connected to the right end of the pumping tube, and 5-8 groups of double helix tubes are equidistantly fixedly connected to the lower end of the No. 2 transverse tube, and the lower end of the double helix tube is fixedly connected to the No. 2 longitudinal tube extending into the silo, and the double helix tube has a DNA chain structure, and the two spiral tubes in the double helix tube are both made of copper pipes and the tube spacing is 0.5-1mm. The vapor-liquid mixture flowing into the No. 2 transverse tube is evenly distributed to each double helix tube, and flows downward step by step in a film-like manner along the double helix tubes through the action of airflow. The double helix tubes have a very large surface area and a long flow path, and during the flow process, the contact surface with the high-temperature steam is very large, and heat is transferred to the vapor-liquid mixture in the double helix tube.

[0014] Beneficial effects of the utility model:

[0015] 1. By setting an oil bath heating unit in the evaporator, the fish meal liquid is slowly cooked and heated from the inside to the outside. Compared with the traditional external heating method, the liquid is not easy to coke on the inner wall of the evaporator, reducing material loss. The heat exchange unit with a long path is used to replace the original straight tube heat exchange tube. The liquid can be fully heated during the flow process, ensuring complete separation of gas and liquid, and better treatment effect.

[0016] 2. The steam after gas-liquid separation is used as the secondary heating medium of the heat exchange unit. When the valve port is closed, the amount of steam in the secondary heating chamber continues to increase and is in a high-pressure state. The annular heating pipe can make the steam temperature rise higher, which has a better heating effect on the heat exchange unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1The diagram shows the external three-dimensional structure of the fish meal production cooking machine of the utility model;

[0018] Figure 2 The schematic diagram of the internal three-dimensional structure of the evaporation chamber of the fish meal production cooking machine of the utility model is shown;

[0019] Figure 3 The figure shows a schematic diagram of the overall assembly of the fish meal production cooking machine of the utility model in the first embodiment;

[0020] Figure 4 The three-dimensional structure diagram of the heat exchange unit of the fish meal production cooking machine of the utility model is shown;

[0021] Figure 5 The figure shows a schematic diagram of the overall assembly of the fish meal production cooking machine of the second embodiment of the utility model;

[0022] Figure 6 What is shown is a three-dimensional structural schematic diagram of a second embodiment of a heat exchange unit of a fish meal production cooking machine of the present utility model.

[0023] Explanation of the reference numerals in the accompanying drawings: 1. Evaporation bin; 2. Feeding port; 3. Evaporator; 6. Fluid pump press; 7. Pumping pipe; 8. Secondary heating bin; 10. Annular heating pipe; 11. Bin; 12. Liquid outlet; 13. Steam overflow port; 14. Valve port; 401. Heat-conducting ball; 402. Heater; 501. Driving machine; 502. Mixing rack; 901. Horizontal pipe No. 1; 902. S-shaped bend pipe; 903. Vertical pipe No. 1; 904. Horizontal pipe No. 2; 905. Double helix pipe; 906. Vertical pipe No. 2. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0025] See also Figure 1-6The utility model provides a fish meal production cooking machine, including an evaporation bin 1, a feeding port 2, an evaporator 3, a fluid pump 6, a pumping pipe 7, a secondary heating bin 8, an oil bath heating unit, a mixing mechanism, a heat exchange unit, and an annular heating pipe 10; the secondary heating bin 8 is fixedly installed at the right end of the evaporation bin 1, the evaporator 3 is installed in the evaporation bin 1, and the upper end of the evaporation bin 1 is provided with a feeding port 2 connected to the evaporator 3, the evaporation bin 1 is provided with an oil bath heating unit and a mixing mechanism, the right end of the evaporator 3 is fixedly connected with a pumping pipe 7 extending into the secondary heating bin 8, the lower end of the evaporation bin 1 is provided with a fluid pump 6 connected to the evaporator 3 and the pumping pipe 7, and the secondary heating bin 8 is provided with a heat exchange unit connected to the right end of the pumping pipe 7 The inner wall of the secondary heating bin 8 is installed with an annular heating pipe 10 surrounding the outside of the heat exchange unit. By setting an oil bath heating unit in the evaporator 3, the fish meal liquid is slowly cooked and heated from the inside to the outside. The gas-liquid mixture is pressurized by the fluid pump 6 through the pumping pipe 7 and pumped into the heat exchange unit. The liquid can be fully heated during the flow process, and secondary heating vaporization is formed in the secondary heating bin 8 to ensure that the gas and liquid are completely separated. The evaporator 3 has a built-in liquid distribution and film-forming unit, and the left end of the pumping pipe 7 is connected to the liquid distribution and film-forming unit. The fluid pump 6 is connected to the liquid distribution and film-forming unit. The annular heating pipe 10 has a built-in heating resistor and is externally powered by AC power. The heating temperature of the annular heating pipe 10 is 200-300 degrees Celsius.

[0026] See also Figure 2 The oil bath heating unit includes a heat-conducting ball 401 and a heater 402; the heat-conducting ball 401 is a hollow spherical structure made of ceramic material and is filled with heat-conducting oil. The heater 402 is installed on the outer wall of the evaporator 3 and the heating element of the heater 402 extends into the heat-conducting ball 401. After closing the feeding port 2, the heater 402 heats the heat-conducting oil in the heat-conducting ball 401, and the oil temperature rises slowly, transferring the heat to the surrounding areas to the fish meal liquid in the evaporator 3, cooking it, and performing heat dissipation through the liquid distribution and film-forming unit in the evaporator 3. Falling film evaporation, the mixing mechanism includes a driving machine 501 and a mixing frame 502; the driving machine 501 is installed in the evaporator 3 through a bracket, and the lower end of the transmission element of the driving machine 501 is fixedly connected to the mixing frame 502 adapted to the shape of the heat-conducting ball 401. The mixing frame 502 reciprocates between the outer wall of the heat-conducting ball 401 and the inner wall of the evaporator 3, and the rotation angle is 300 degrees. During the cooking process of the fish meal liquid, the driving machine 501 controls the mixing frame 502 to reciprocate and rotate, and the liquid is continuously flowed, further reducing the possibility of the liquid being coked on the heat-conducting ball 401.

[0027] See also Figure 3-6A silo 11 with a bottom wall inclined to the lower right is fixedly installed at the lower end of the secondary heating bin 8. The bottom of the heat exchange unit extends downward into the silo 11. A liquid outlet 12 is provided at the right end of the silo 11. Under the action of gravity, vacuum induction and airflow, the vapor and liquid in the heat exchange unit flow into the silo 11 from top to bottom in a uniform film. The steam floats upward in the silo 11, and the liquid flows along the bottom wall of the silo 11 and is discharged from the liquid outlet 12. A steam overflow port 13 in the secondary heating bin 8 is provided at the upper left end of the silo 11. A valve port 14 is provided at the upper end of the secondary heating bin 8 and a gate valve mechanism is installed on the valve port 14. The steam entering the silo 11 is discharged into the secondary heating bin 8 through the steam overflow port 13. When the valve port 14 is closed, as the steam continues to accumulate, the pressure in the secondary heating bin 8 increases, and the annular heating pipe 10 further increases the heat of the steam, so as to perform secondary heating on the heat exchange unit, forcing the subsequent vapor-liquid mixture to be further separated.

[0028] Example 1: Please refer to Figure 3-4 In this embodiment, the heat exchange unit includes a No. 1 transverse pipe 901, an S-shaped elbow 902, and a No. 1 longitudinal pipe 903; the No. 1 transverse pipe 901 is fixedly connected to the right end of the pumping pipe 7, and 5-8 groups of S-shaped elbows 902 are fixedly connected to the lower end of the No. 1 transverse pipe 901 at equal intervals, and the lower end of the S-shaped elbow 902 is fixedly connected to a No. 1 longitudinal pipe 903 extending into the silo 11, and the vapor-liquid mixture flowing into the No. 1 transverse pipe 901 is evenly distributed to each S-shaped elbow 902, and flows downward step by step in a film-like manner along the S-shaped elbow 902 through the action of airflow. During the flow process, the high-temperature steam in the secondary heating bin 8 transfers heat to the vapor-liquid mixture in the S-shaped elbow 902 again.

[0029] Example 2: Please refer to Figure 5-6 In this embodiment, the heat exchange unit includes a No. 2 transverse tube 904, a double helix tube 905, and a No. 2 longitudinal tube 906; the No. 2 transverse tube 904 is fixedly connected to the right end of the pumping tube 7, and 5-8 groups of double helix tubes 905 are fixedly connected to the lower end of the No. 2 transverse tube 904 at equal intervals, and the lower end of the double helix tube 905 is fixedly connected to the No. 2 longitudinal tube 906 extending into the silo 11, and the double helix tube 905 has a DNA chain structure. The two spiral tubes in the double helix tube 905 are both made of copper pipes and the tube spacing is 0.5-1mm. The vapor-liquid mixture flowing into the No. 2 transverse tube 904 is evenly distributed to each double helix tube 905, and flows downward step by step in a film-like manner along the double helix tube 905 through the action of airflow. Utilizing the large external surface area and long flow path of the double helix tube 905, during the flow process, the contact surface with the high-temperature steam is very large, and heat is transferred to the vapor-liquid mixture in the double helix tube 905.

[0030] Through the above steps, by setting an oil bath heating unit in the evaporator 3, the fish meal liquid is slowly cooked and heated from the inside to the outside. Compared with the traditional external heating method, the liquid is not easy to be coked on the inner wall of the evaporator 3, reducing material loss. A heat exchange unit with a long path is used to replace the original straight tube heat exchange tube. The liquid can be fully heated during the flow process to ensure complete separation of gas and liquid, and the treatment effect is better, so as to solve the problem that the fish meal liquid is easy to be coked in the evaporator 3 during cooking, and it is difficult to heat to a sufficient temperature during secondary heating and vaporization separation due to the short flow path.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A fish meal production steaming and cooking machine, comprising an evaporation chamber (1), a feeding port (2), an evaporator (3), a fluid pump (6), a pumping pipe (7), and a secondary heating chamber (8); characterized in that: It also includes an oil bath heating unit, a mixing mechanism, a heat exchange unit, and an annular heating pipe (10); the secondary heating chamber (8) is fixedly installed at the right end of the evaporation chamber (1); an evaporator (3) is installed in the evaporation chamber (1), and a feeding port (2) connected to the evaporator (3) is provided at the upper end of the evaporation chamber (1); the oil bath heating unit and the mixing mechanism are provided in the evaporation chamber (1); a pumping pipe (7) extending into the secondary heating chamber (8) is fixedly connected to the right end of the evaporator (3); a fluid pump (6) connected to the evaporator (3) and the pumping pipe (7) is installed at the lower end of the evaporation chamber (1); a heat exchange unit connected to the right end of the pumping pipe (7) is provided in the secondary heating chamber (8); and an annular heating pipe (10) surrounding the outside of the heat exchange unit is installed on the inner wall of the secondary heating chamber (8).

2. The fish meal production cooking machine according to claim 1, characterized in that: The oil bath heating unit comprises a heat conducting ball (401) and a heater (402); The heat-conducting ball (401) is a hollow spherical structure made of ceramic material and is filled with heat-conducting oil. The heater (402) is installed on the outer wall of the evaporator (3) and the heating element of the heater (402) extends into the heat-conducting ball (401).

3. The fish meal production cooking machine according to claim 2, characterized in that: The mixing mechanism comprises a driving machine (501) and a mixing frame (502); the driving machine (501) is installed in the evaporator (3) via a bracket, the lower end of the transmission element of the driving machine (501) is fixedly connected to the mixing frame (502) adapted to the shape of the heat-conducting ball (401), and the mixing frame (502) reciprocates and rotates between the outer wall of the heat-conducting ball (401) and the inner wall of the evaporator (3), and the rotation angle is 300 degrees.

4. The fish meal production cooking machine according to claim 3, characterized in that: A silo (11) with a bottom wall tilted downward to the right is fixedly mounted at the lower end of the secondary heating silo (8); the bottom of the heat exchange unit extends downward into the silo (11); and a liquid outlet (12) is provided at the right end of the silo (11).

5. The fish meal production cooking machine according to claim 4, characterized in that: A steam overflow port (13) in the secondary heating bin (8) is arranged at the upper left end of the material bin (11), a valve port (14) is arranged at the upper end of the secondary heating bin (8), and a gate valve mechanism is installed on the valve port (14).

6. The fish meal production cooking machine according to claim 5, characterized in that: The heat exchange unit comprises a No. 1 transverse pipe (901), an S-shaped elbow pipe (902), and a No. 1 longitudinal pipe (903); the No. 1 transverse pipe (901) is fixedly connected to the right end of the pumping pipe (7), 5 to 8 groups of S-shaped elbow pipes (902) are fixedly connected to the lower end of the No. 1 transverse pipe (901) at equal intervals, and the lower end of the S-shaped elbow pipe (902) is fixedly connected to the No. 1 longitudinal pipe (903) extending into the silo (11).

7. The fish meal production cooking machine according to claim 5, characterized in that: The heat exchange unit comprises a No. 2 transverse tube (904), a double helical tube (905), and a No. 2 longitudinal tube (906); the No. 2 transverse tube (904) is fixedly connected to the right end of the pumping tube (7), 5 to 8 groups of double helical tubes (905) are fixedly connected to the lower end of the No. 2 transverse tube (904) at equal intervals, and the lower end of the double helical tube (905) is fixedly connected to the No. 2 longitudinal tube (906) extending into the silo (11).

8. The fish meal production cooking machine according to claim 1, characterized in that: The evaporator (3) has a built-in liquid distribution and film-forming unit, the left end of the pumping pipe (7) is connected to the liquid distribution and film-forming unit, and the fluid pump (6) is connected to the liquid distribution and film-forming unit.

9. The fish meal production cooking machine according to claim 1, characterized in that: The annular heating tube (10) has a built-in heating resistance wire and is externally connected to a mains power supply. The heating temperature of the annular heating tube (10) is 200-300 degrees Celsius.

10. The fish meal production cooking machine according to claim 7, characterized in that: The double helix tube (905) is in a DNA chain structure. Both helical tubes in the double helix tube (905) are made of copper and the distance between the tubes is 0.5-1 mm.

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