Fish oil concentration device adopting variable temperature compensation structure

Abstract

The invention discloses a fish oil concentration device adopting a variable temperature compensation structure, which aims at a molecular distillation method process of fish oil, takes a water bath heating mode as a basis, and limits the flowing modes of a heating medium and a fish oil stock solution, specifically, the flowing modes of the heating medium and the fish oil stock solution are limited through a conical spiral sheet group and a shunting spiral sheet group; on one hand, the heat exchange time between the fish oil stock solution and the heating medium is prolonged, and on the other hand, the fish oil stock solution is promoted to form a film in the diversion bin sleeve, so that light substances are promoted to float upwards in a gas phase state to achieve the purpose of concentration and purification, and on the basis, the flowing process of the heating medium is optimized; the multiple reversing water pipes are used for carrying out alternate heat exchange on the whole water bath environment, and the fish oil concentration environment temperature is indirectly controlled by controlling the temperature change after heat exchange of the heating medium, so that the fish oil concentration temperature is maintained to be relatively stable, the fish oil concentration quality is promoted, and negative problems caused by too high or too low temperature are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of fish oil concentration, and in particular to a fish oil concentration device adopting a variable temperature compensation structure. Background Art

[0002] Fish oil concentration is a process of increasing the content of active ingredients such as EPA and DHA in fish oil through special processes to achieve higher concentrations. Specific methods include molecular distillation, supercritical fluid extraction, urea inclusion method, etc. Please refer to the relevant content in publication number CN109294735A.

[0003] It should be noted that temperature is a key parameter affecting the above three concentration methods. Taking molecular distillation as an example, too high temperature will cause the unsaturated fatty acids in fish oil to oxidize and produce harmful substances, which will not only affect the quality and nutritional value of fish oil but also cause adverse health problems. In supercritical fluid extraction, temperature will affect the volatility of the extract, but too high temperature will reduce the density of the supercritical fluid. In urea inclusion method, temperature will affect the stability and efficiency of the inclusion complex.

[0004] It should also be noted that fish oil concentration is a continuous process. The process of fish oil discharge and replenishment directly affects the temperature of the concentration environment. Specifically, the fish oil temperature fluctuates greatly, affecting the concentration effect. This application proposes a solution to this problem. Summary of the invention

[0005] The object of the present invention is to provide a fish oil concentrator with a variable temperature compensation structure, which is aimed at the ambient temperature during the fish oil concentration process. Specifically, the temperature of the fish oil raw material in the concentration environment fluctuates greatly due to the two actions of fish oil discharge and replenishment, thereby affecting the concentration effect, such as the quality of the fish oil is damaged, the extraction efficiency is low, and other problems.

[0006] The object of the present invention can be achieved by the following technical scheme: a fish oil concentration device adopting a variable temperature compensation structure comprises a diversion chamber jacket and a water bath heating chamber arranged from top to bottom, wherein a conical spiral sheet group and a diversion spiral sheet group are respectively installed in the diversion chamber jacket and the water bath heating chamber, and injection ports are installed at the external positions of the diversion chamber jacket and the water bath heating chamber;

[0007] The fish oil stock solution and the heat medium are pumped into the diversion chamber sleeve and the water bath heating chamber through the injection port, respectively; a gas phase liquid collecting pipe and a liquid phase liquid collecting pipe are respectively installed at the center point of the upper end and the lower end of the diversion chamber sleeve, and a liquid outlet is installed at the center point of the lower end of the water bath heating chamber, and the liquid phase liquid collecting pipe runs through the liquid phase liquid collecting pipe;

[0008] The water bath heating chamber is provided with a motion control component at an external position.

[0009] It is further configured as follows: the upper end portion of the cross section of the diversion chamber sleeve is in a conical shape, and the lower end portion of the cross section of the diversion chamber sleeve is in an inverted truncated cone shape.

[0010] It is further configured as follows: the lower surface of the conical spiral sheet group matches the bottom end of the inner wall of the diversion chamber sleeve, and a gas phase gap is provided between the upper surface of the conical spiral sheet group and the top inner wall of the diversion chamber sleeve.

[0011] It is further configured as follows: the upper surface of the diverter spiral sheet group matches the lower side surface of the diverter chamber sleeve, and the lower surface of the diverter spiral sheet group matches the bottom end of the inner wall of the water bath heating chamber, and the cross-section of the water bath heating chamber is an inverted frustum.

[0012] It is further configured as follows: a condensation component corresponding to the gas phase liquid collecting pipe is installed at the center point of the top end of the inner wall of the diversion chamber sleeve.

[0013] It is further configured as follows: the spiral directions, spiral diameters and spiral pitches of the conical spiral sheet group and the diverter spiral sheet group are equal, and the spiral angles of the conical spiral sheet group and the diverter spiral sheet group are different.

[0014] It is further configured as follows: a plurality of reversing water pipes corresponding to the flow-dividing spiral sheet groups are installed on the lower side of the water bath heating chamber, and both ends of the reversing water pipes are connected to the inside of the water bath heating chamber.

[0015] It is further configured that: the connection positions of the two ends of the reversing water pipe and the water bath heating chamber match the pitch of the diverting spiral sheet group.

[0016] The present invention has the following beneficial effects:

[0017] 1. For the fish oil concentration process, molecular distillation is used as the basis, and water bath heating is used as the heat exchange method. The flow modes of the heat medium and the fish oil stock solution are respectively restricted by the setting directions of the conical spiral sheet group and the diversion spiral sheet group, so as to ensure that the fish oil stock solution and the heat medium continue to flow in the downward direction of the spiral, and the fish oil stock solution is indirectly heat-exchanged by the heat medium. Through the flow modes of the two, on the one hand, the heat exchange time between the fish oil stock solution and the heat medium is prolonged, and on the other hand, a thin film is formed by the fish oil stock solution in the diversion chamber sleeve, thereby promoting the lighter substances to float in the gas phase to achieve the purpose of concentration and purification;

[0018] 2. Based on the above content, the flow process of the heat medium is further improved. First, the overall water flow channel is separated and connected in series with multiple reversing water pipes. Its essence is to connect each gap flow channel in series corresponding to the diameter direction of the water bath heating chamber, and the temperature change of the heat medium after heat exchange is fed back according to the temperature change in each reversing water pipe. The fish oil concentration environment temperature is indirectly controlled by controlling the pumping flow rate of the heat medium. Its key purpose is to maintain the relative stability of the fish oil concentration temperature by directly controlling the water bath temperature, promote the quality of fish oil concentration, and avoid negative problems caused by excessively high or low temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a fish oil concentration device using a variable temperature compensation structure proposed by the present invention;

[0021] Figure 2 The fish oil concentrating device adopting the variable temperature compensation structure proposed by the present invention Figure 1 Split diagram of ;

[0022] Figure 3 The fish oil concentrating device adopting the variable temperature compensation structure proposed by the present invention Figure 1 A cross-sectional view of

[0023] Figure 4 A partial cross-sectional view of a flow distribution chamber sleeve in a fish oil concentration device using a variable temperature compensation structure proposed by the present invention;

[0024] Figure 5 A top cross-sectional view of a flow divider jacket in a fish oil concentration device using a variable temperature compensation structure proposed by the present invention;

[0025] Figure 6 A top cross-sectional view of a water bath heating chamber in a fish oil concentration device using a variable temperature compensation structure proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of a water bath heating chamber in a fish oil concentration device using a variable temperature compensation structure proposed by the present invention.

[0027] In the figure: 1. diversion chamber sleeve; 101. liquid phase collecting pipe; 102. conical spiral blade group; 2. water bath heating chamber; 201. diversion spiral blade group; 202. reversing water pipe; 203. liquid outlet; 3. injection port; 4. gas phase collecting pipe; 401. condensation component; 5. motion control component. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1: With regard to the ambient temperature during the fish oil concentration process, the temperature of the fish oil raw material in the concentration environment fluctuates greatly due to the two actions of fish oil discharge and replenishment, thereby affecting the concentration effect, such as the quality of the fish oil being damaged and the extraction efficiency being low. The following technical solution is proposed:

[0030] Reference Figures 1 to 7 The fish oil concentration device adopting the variable temperature compensation structure in this embodiment includes a flow dividing chamber jacket 1 and a water bath heating chamber 2 arranged from top to bottom, wherein the flow dividing chamber jacket 1 and the water bath heating chamber 2 are respectively provided with a conical spiral sheet group 102 and a flow dividing spiral sheet group 201, and an injection port 3 is provided at the external position of the flow dividing chamber jacket 1 and the water bath heating chamber 2;

[0031] The fish oil stock solution and the heat medium are pumped into the diversion chamber jacket 1 and the water bath heating chamber 2 through the injection port 3, respectively. The gas phase liquid collecting pipe 4 and the liquid phase liquid collecting pipe 101 are respectively installed at the center point of the upper end and the lower end of the diversion chamber jacket 1, and the liquid outlet 203 is installed at the center point of the lower end of the water bath heating chamber 2. The liquid phase liquid collecting pipe 101 penetrates the liquid phase liquid collecting pipe 101;

[0032] An action control component 5 is installed at an external position of the water bath heating chamber 2, the upper end portion of the cross section of the diverter chamber sleeve 1 is conical, and the lower end portion of the cross section of the diverter chamber sleeve 1 is inverted truncated cone shape, the lower surface of the conical spiral sheet group 102 matches the bottom end of the inner wall of the diverter chamber sleeve 1, and a gas phase gap is set between the upper surface of the conical spiral sheet group 102 and the top inner wall of the diverter chamber sleeve 1.

[0033] Working principle: To explain the principle of fish oil concentration, the present invention heats the fish oil concentrate based on the water bath heating method. For details, please refer to the working principles of molecular distillation and supercritical fluid extraction. For example, molecular distillation is different from traditional distillation. It does not rely on boiling point difference for separation, but relies on the difference in the mean free path of molecular motion of different substances to achieve separation. The liquid mixture is heated on the heating plate, and the light and heavy molecules will escape from the liquid surface and enter the gas phase. Due to the different free paths of light and heavy molecules, light molecules can reach the condensation plate faster and be condensed and discharged, while heavy molecules cannot reach the condensation plate. Condensation plate, thereby achieving separation of substances, the present invention uses the shunt chamber jacket 1 as a relatively closed space, and continuously pumps fish oil stock solution into the shunt chamber jacket 1 through the injection port 3 at its upper position, and continuously pumps hot water as a heat medium into the shunt heating chamber 2 through the injection port 3, and continuously exchanges heat with the fish oil stock solution using the heat medium to achieve the purpose of heating the fish oil stock solution, and combined with the working principle of molecular distillation, a part of the substance is heated to form a gas phase and "escapes" from the fish oil stock solution, and further utilizes the weight difference of different substances to achieve the purpose of concentration, for this, refer to Figure 3 Description: A portion of the gas phase material floats up along the diversion chamber jacket 1 and is concentrated at the condensation component 401 to re-form the liquid phase, and is collected and discharged through the gas phase liquid collecting pipe 4. The relevant description of the condensation component 401 is not described in the present invention;

[0034] It should be noted that the heavier substances are still retained in the liquid phase, and the corresponding conical spiral sheet group 102 is provided in the split chamber sleeve 1, as shown in FIG. Figure 3 As shown, the conical spiral sheet group 102, while retaining the basic spiral shape, also needs to fit the structural shape of the diversion chamber sleeve 1 to form a structural characteristic of an inverted cone, so that when the fish oil concentrate is pumped into through the injection port 3, the fish oil concentrate will gradually flow downward under the action of gravity, and during its flow, it will be restricted by the conical spiral sheet group 102 to extend the overall heating time, and finally be concentrated at the corresponding liquid phase collecting pipe 101 and discharged, and the heat medium pumped into the water bath heating chamber 2 will eventually be discharged from the liquid outlet 203.

[0035] Embodiment 2: Based on the working principle in Embodiment 1, the heating process of the fish oil stock solution is supplemented as follows:

[0036] The upper surface of the diverter spiral sheet group 201 matches the lower surface of the diverter bin sleeve 1, and the lower surface of the diverter spiral sheet group 201 matches the bottom end of the inner wall of the water bath heating bin 2. The cross-section of the water bath heating bin 2 is an inverted cone. A condensation assembly 401 corresponding to the gas phase collecting pipe 4 is installed at the center point of the top end of the inner wall of the diverter bin sleeve 1. The spiral direction, spiral diameter and pitch of the conical spiral sheet group 102 and the diverter spiral sheet group 201 are equal, and the spiral angles of the conical spiral sheet group 102 and the diverter spiral sheet group 201 are different. A plurality of reversing water pipes 202 corresponding to the diverter spiral sheet group 201 are installed on the lower side of the water bath heating bin 2. The two ends of the reversing water pipe 202 are connected to the inside of the water bath heating bin 2, and the connection positions of the two ends of the reversing water pipe 202 and the water bath heating bin 2 match the pitch of the diverter spiral sheet group 201.

[0037] Program Description: Specific reference Figure 3 The pumping direction of the fish oil stock solution is to start from the upper end of the outer edge of the diverter chamber sleeve 1 and flow in the downward direction of the spiral, thereby forming a fish oil stock solution film at the bottom end of the inner wall of the diverter chamber sleeve 1. In the water bath heating mode, the fish oil stock solution is continuously heated. For this purpose, it is necessary to further limit the flow direction of the heat medium in the water bath heating chamber 2, which is consistent with the pumping direction of the fish oil stock solution. Both are pumped from the upper end of the outer edge of the water bath heating chamber 2 and are also restricted by the diverter spiral sheet group 201. Specifically, it is to ensure that the heat medium flows downward in a spiral along the structural shape of the diverter spiral sheet group 201. For this purpose, the spiral direction and spiral diameter of the conical spiral sheet group 102 and the diverter spiral sheet group 201 are restricted. The spiral pitch is equal to that of the conical spiral sheet group 102 and the diverting spiral sheet group 201, and the spiral angles are different, so as to ensure that the heat medium is always in contact with the fish oil stock solution for heat exchange. In this process, it should be noted that because the fish oil stock solution and the heat medium are in a heat exchange state, it can be understood that the temperature of the heat medium that enters the water bath heating chamber 2 and continues to flow gradually decreases, and the fish oil stock solution has a relatively low initial temperature during the pumping process, and then gradually heats up through the heat exchange process of the heat medium. For this purpose, it is necessary to maintain the same flow direction of the fish oil stock solution and the heat medium, and further maintain the temperature of the fish oil stock solution by maintaining the temperature of the heat medium in the water bath heating chamber 2, and set the following contents according to the above contents:

[0038] S1: During the continuous heating of the fish oil stock solution, in order to ensure the continuous spiral flow of the fish oil stock solution, the cross-sections of the upper and lower ends of the diversion chamber sleeve 1 are first limited. In order to ensure that the gas phase formed by the lighter substances flows fully, the upper end of the classification chamber sleeve 1 is limited to be conical, ensuring that the gas phase formed by the lighter substances gradually floats up and flows, and is concentrated at the condensation component to re-form the liquid phase and is discharged from the gas phase collecting pipe 4. On the contrary, the heavier substances are still retained in the liquid phase and flow downward. This part is the basic technical content of the present invention, and the key lies in the flow process of the heat medium, in which The difference between the diverter spiral sheet group 201 and the conical spiral sheet group 102 is that a gap is provided between the upper end of the conical spiral sheet group 102 and the upper end of the inner wall of the diverter chamber sleeve 1, mainly to ensure the flow process of the gas phase material, but the diverter spiral sheet group 201 is completely in contact with the lower side of the diverter chamber sleeve 1 and the bottom of the water bath heating chamber 2. What needs to be ensured is that only the fish oil stock solution forms a thin film through the conical spiral sheet group 102. In essence, the fish oil stock solution is not completely filled in the diverter chamber sleeve 1, but it is necessary to ensure that the heat medium is completely filled in the water bath heating chamber 2.

[0039] S2: It should be noted that the flow rate of the fish oil stock solution in the diverter chamber sleeve 1 is directly related to the inclination angle of the lower end of the diverter chamber sleeve 1, the viscosity of the fish oil, and the structural characteristics of the conical spiral sheet group 102. However, the key point is that as shown in S1, because the temperature change of the fish oil stock solution gradually increases until it stabilizes, and the temperature change of the heat medium gradually decreases, the fish oil concentration temperature is about 60 degrees Celsius. Therefore, it is necessary to ensure that the initial temperature of the heat medium is slightly greater than 60 degrees Celsius. For this, the temperature of the fish oil stock solution in the conical spiral sheet group 102 can be directly calculated according to the Newton's cooling law formula, the convection heat transfer coefficient and other heat transfer calculation methods. In order to stabilize the temperature change in the fish oil stock solution, it is specifically used to detect the temperature change in the water bath heating chamber 2;

[0040] S3: It is necessary to ensure that the heat medium concentrated at the liquid outlet 203 is maintained at 60°C, and refer to Figure 6 and Figure 7 A plurality of reversing water pipes 202 are arranged at the lower side of the water bath heating chamber 2. Because the water bath heating chamber 2 forms a spiral water flow channel through the diversion spiral sheet group 201, the heat medium inside the water bath heating chamber heats the fish oil stock solution by heat exchange, and the reversing water pipe 202 is mainly used to exchange heat with the heat medium in the water flow channel. Its essence can be referred to Figure 6If the overall water flow channel is provided with n gap flow channels along the diameter direction of the water bath heating chamber 2 and they are numbered along the diameter direction of the water bath heating chamber 2, then the two ends of one of the reversing water pipes 202 are respectively connected with the first gap flow channel and the n / 2th gap flow channel, or are connected with the second gap flow channel and the (n / 2+1)th gap flow channel, and a temperature sensor is provided at the middle end of each reversing water pipe 202. By connecting the heat medium in the two gap flow channels, the purpose is to maintain the water temperature change in the overall water flow channel. The principle is: when there is a difference in the temperature of the heat medium in the two gap flow channels, the flow process of the heat medium in the two gap flow channels is realized through the reversing water pipe 202, thereby balancing the temperature changes in the two gap flow channels.

[0041] Embodiment 3: Combining Embodiment 1 and Embodiment 2, the following scheme is set through the action control assembly:

[0042] Solution description: The action control assembly 5 provided in the overall solution is mainly used to control the flow rate of the heat medium pumped into the water bath heating chamber 2, and maintain the temperature of the heat medium pumped into the water bath heating chamber 2, and simultaneously collect the temperature changes in each reversing water pipe 202. If the number of each reversing water pipe 202 is m, then the temperature value in each reversing water pipe 202 is represented as Tm, and the upper limit To of the concentration temperature of the fish oil stock solution is set, so as to record the deviation value Tk between each reversing water pipe 202 and the upper limit To of the concentration temperature, and control the flow rate of the heat medium pumped into the water bath heating chamber 2 according to each deviation value Tk, and feedback is performed according to the deviation value Tk in each reversing water pipe 202 and the temperature value at the liquid outlet 203 until the deviation value Tk in each reversing water pipe 202 is relatively stable and the temperature value at the liquid outlet 203 is close to the upper limit To of the concentration temperature, so as to be used to feedback the concentration temperature in the diversion chamber sleeve 1.

[0043] In summary, the molecular distillation process of fish oil is based on water bath heating and limits the flow of heat medium and fish oil concentrate. Specifically, the flow of the two is limited by conical spiral sheet group and diversion spiral sheet group. On the one hand, the heat exchange time between the fish oil concentrate and the heat medium is prolonged. On the other hand, a thin film is formed in the diversion chamber jacket of the fish oil concentrate, thereby promoting the floating of lighter substances in the gas phase to achieve the purpose of concentration and purification. Based on this, the flow process of the heat medium is optimized, and multiple reversing water pipes are used to perform alternating heat exchange on the overall water bath environment. The temperature of the fish oil concentration environment is indirectly controlled by controlling the temperature change of the heat medium after heat exchange, so as to maintain the relative stability of the fish oil concentration temperature, promote the quality of fish oil concentration, and avoid negative problems caused by excessively high or low temperature.

[0044] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fish oil concentration device adopting a variable temperature compensation structure comprises a diversion chamber sleeve (1) and a water bath heating chamber (2) arranged from top to bottom, characterized in that: The diversion chamber jacket (1) and the water bath heating chamber (2) are respectively provided with a conical spiral sheet group (102) and a diversion spiral sheet group (201), and injection ports (3) are provided at external positions of the diversion chamber jacket (1) and the water bath heating chamber (2); The fish oil stock solution and the heat medium are pumped into the diversion chamber sleeve (1) and the water bath heating chamber (2) respectively through the injection port (3); a gas phase liquid collecting pipe (4) and a liquid phase liquid collecting pipe (101) are respectively installed at the center point of the upper end and the lower end of the diversion chamber sleeve (1); a liquid outlet (203) is installed at the center point of the lower end of the water bath heating chamber (2); and the liquid phase liquid collecting pipe (101) penetrates the liquid phase liquid collecting pipe (101); An action control component (5) is installed at an external position of the water bath heating chamber (2).

2. The fish oil concentrator using a variable temperature compensation structure according to claim 1, characterized in that: The upper end portion of the cross section of the diversion chamber sleeve (1) is in the shape of a cone, and the lower end portion of the cross section of the diversion chamber sleeve (1) is in the shape of an inverted truncated cone.

3. The fish oil concentration device using a variable temperature compensation structure according to claim 2, characterized in that: The lower surface of the conical spiral sheet group (102) matches the bottom end of the inner wall of the diversion chamber sleeve (1), and a gas phase gap is provided between the upper surface of the conical spiral sheet group (102) and the top inner wall of the diversion chamber sleeve (1).

4. The fish oil concentrator using a variable temperature compensation structure according to claim 1, characterized in that: The upper surface of the diverter spiral sheet group (201) matches the lower surface of the diverter chamber sleeve (1), and the lower surface of the diverter spiral sheet group (201) matches the bottom end of the inner wall of the water bath heating chamber (2), and the cross-section of the water bath heating chamber (2) is in the shape of an inverted truncated cone.

5. The fish oil concentrator using a variable temperature compensation structure according to claim 2, characterized in that: A condensation assembly (401) corresponding to the gas phase liquid collecting pipe (4) is installed at the center point of the top end of the inner wall of the diversion chamber sleeve (1).

6. The fish oil concentration device using a variable temperature compensation structure according to claim 1, characterized in that: The spiral directions, spiral diameters and spiral pitches of the conical spiral sheet group (102) and the flow-dividing spiral sheet group (201) are equal, and the spiral angles of the conical spiral sheet group (102) and the flow-dividing spiral sheet group (201) are different.

7. The fish oil concentrator using a variable temperature compensation structure according to claim 1, characterized in that: A plurality of reversing water pipes (202) corresponding to the flow-dividing spiral sheet group (201) are installed on the lower side of the water bath heating chamber (2), and both ends of the reversing water pipes (202) are connected to the inside of the water bath heating chamber (2).

8. The fish oil concentrator using a variable temperature compensation structure according to claim 7, characterized in that: The connection positions between the two ends of the reversing water pipe (202) and the water bath heating chamber (2) match the pitch of the diverting spiral sheet group (201).

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