Fish oil concentration device with variable temperature compensation structure

Abstract

The present invention discloses a fish oil concentrating device with a variable temperature compensation structure. Aiming at the molecular distillation process of fish oil, the device is based on a water bath heating method and restricts the flow mode of a heat medium and a fish oil stock solution. Specifically, the device restricts the flow mode of the heat medium and the fish oil stock solution by using a conical spiral plate group and a diverter spiral plate group. On the one hand, the device prolongs the heat exchange time between the fish oil stock solution and the heat medium. On the other hand, the device promotes the formation of a thin film of the fish oil stock solution in the diverter jacket, thereby promoting the floating of lighter substances in a gaseous state to achieve the purpose of concentration and purification. Based on this, the device optimizes the flow process of the heat medium, uses multiple reversing water pipes to perform alternating heat exchange on the entire water bath environment, and indirectly controls the temperature of the fish oil concentration environment by controlling the temperature change of the heat medium after heat exchange. This device is used to maintain a relatively stable fish oil concentration temperature, improve the quality of fish oil concentration, and avoid negative problems caused by excessively high or low temperatures.

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 adsorption, 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, excessively high temperature will cause the unsaturated fatty acids in fish oil to oxidize and produce harmful substances, which not only affects the quality and nutritional value of the fish oil but also causes adverse health problems. In supercritical fluid extraction, temperature will affect the volatility of the extract, but excessively 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 concentration environment temperature. 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 present invention aims to provide a fish oil concentrator with a variable temperature compensation structure. This device addresses the environmental temperature during the fish oil concentration process. Specifically, the temperature of the fish oil raw material in the concentration environment fluctuates significantly due to the two actions of fish oil discharge and replenishment, thereby affecting the concentration effect. For example, this can lead to problems such as reduced fish oil quality and low extraction efficiency.

[0006] The object of the present invention can be achieved by the following technical solution: a fish oil concentrator adopting a variable temperature compensation structure includes a diversion chamber jacket and a water bath heating chamber arranged from top to bottom, wherein the diversion chamber jacket and the water bath heating chamber are respectively installed with a conical spiral plate group and a diversion spiral plate group, 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 jacket and the water bath heating chamber respectively through the injection port. A gas phase collecting pipe and a liquid phase collecting pipe are respectively installed at the center point of the upper end and the lower end of the diversion chamber jacket. A liquid outlet is installed at the center point of the lower end of the water bath heating chamber. The liquid phase collecting pipe runs through the liquid phase collecting pipe.

[0008] The motion control component is installed on the outside of the water bath heating chamber

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

[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 that: 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 diversion spiral plate 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 plate 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 directions of the conical spiral plate group and the diverter spiral plate group are respectively set to restrict the flow of the heat medium and the fish oil stock solution, ensuring that the fish oil stock solution and the heat medium continue to flow in the downward direction of the spiral. The heat medium indirectly exchanges heat with the fish oil stock solution. The flow of the two methods not only prolongs the heat exchange time between the fish oil stock solution and the heat medium, but also promotes the formation of a thin film of the fish oil stock solution in the diverter chamber, thereby promoting the floating of lighter substances in the gas phase to achieve the purpose of concentration and purification.

[0018] 2. Based on the above, the flow process of the heat medium was further improved. First, the overall water flow channel was divided and connected in series with multiple reversing water pipes. The essence of this is to connect each interstitial flow channel in series according to the diameter of the water bath heating chamber. The temperature change of the heat medium after heat exchange is fed back based on the temperature change in each reversing water pipe. The temperature of the fish oil concentration environment is indirectly controlled by controlling the pumping flow rate of the heat medium. The key purpose is to maintain the relative stability of the fish oil concentration temperature by directly controlling the water bath temperature, improve the quality of fish oil concentration, and avoid the negative effects caused by excessively high or low temperatures. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

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

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

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

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

[0024] Figure 5 This is a top cross-sectional view of the diversion chamber sleeve in the fish oil concentration device adopting the variable temperature compensation structure proposed by the present invention;

[0025] Figure 6 This is 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 the water bath heating chamber in the fish oil concentration device using a variable temperature compensation structure proposed by the present invention.

[0027] In the figure: 1. Diverter chamber sleeve; 101. Liquid phase collecting pipe; 102. Conical spiral blade group; 2. Water bath heating chamber; 201. Diverter spiral blade group; 202. Reversing water pipe; 203. Liquid outlet; 3. Injection port; 4. Gas phase collecting pipe; 401. Condensation component; 5. Action control component. DETAILED DESCRIPTION

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1: Regarding the ambient temperature during the fish oil concentration process, specifically because the temperature of the fish oil raw material in the concentration environment fluctuates greatly during the two actions of fish oil discharge and replenishment, thereby affecting the concentration effect, such as causing problems such as damaged fish oil quality and low extraction efficiency. The following technical solution is proposed:

[0030] Reference Figures 1 to 7 The fish oil concentrator using a variable temperature compensation structure in this embodiment includes a diversion chamber jacket 1 and a water bath heating chamber 2 arranged from top to bottom. The diversion chamber jacket 1 and the water bath heating chamber 2 are respectively installed with a conical spiral plate group 102 and a diversion spiral plate group 201, and the diversion chamber jacket 1 and the water bath heating chamber 2 are both installed with an injection port 3 at the external position.

[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 respectively through the injection port 3. The gas phase collecting pipe 4 and the liquid phase collecting pipe 101 are respectively installed at the center point of the upper end and the lower end of the diversion chamber jacket 1. The liquid outlet 203 is installed at the center point of the lower end of the water bath heating chamber 2. The liquid phase collecting pipe 101 penetrates the liquid phase collecting pipe 101;

[0032] An action control component 5 is installed at the external position of the water bath heating chamber 2. The upper end part of the cross section of the diversion chamber sleeve 1 is conical, and the lower end part of the cross section of the diversion chamber sleeve 1 is in the shape of an inverted truncated cone. 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 set between the upper surface of the conical spiral sheet group 102 and the top inner wall of the diversion chamber sleeve 1.

[0033] Working principle: To explain the principle of fish oil concentration, the present invention uses a water bath heating method to heat the fish oil concentrate. For specific reference, the working principles of molecular distillation and supercritical fluid extraction can be used. For example, molecular distillation is different from traditional distillation. It does not rely on boiling point differences for separation, but relies on the difference in the mean free path of the molecules 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 the separation of substances, the present invention uses the diversion chamber jacket 1 as a relatively closed space, and continuously pumps fish oil stock solution into the diversion chamber jacket 1 through the injection port 3 at its upper position, and continuously pumps hot water as a heat medium into the diversion heating chamber 2. The heat medium is used to continuously exchange heat with the fish oil stock solution to achieve the purpose of heating the fish oil stock solution, and combined with the working principle of the molecular distillation method, 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, reference is made to Figure 3 To illustrate: a portion of the gas phase material floats up along the diversion chamber jacket 1 and gathers at the condensation component 401 to re-form into a 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 diversion 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 an inverted cone. Therefore, when the fish oil stock solution is pumped into through the injection port 3, it will gradually flow downward under the action of gravity. During its flow, it is restricted by the conical spiral sheet group 102, thereby extending the overall heating time, and finally concentrates at the corresponding liquid phase collecting pipe 101 and is discharged, while the heat medium pumped into the water bath heating chamber 2 is finally discharged from the liquid outlet 203.

[0035] Example 2: Based on the working principle of Example 1, the following supplementary explanation is given on the heating process of the fish oil stock solution:

[0036] The upper surface of the diverter spiral group 201 matches the lower surface of the diverter chamber sleeve 1, and the lower surface of the diverter spiral group 201 matches the bottom end of the inner wall of the water bath heating chamber 2. The cross-section of the water bath heating chamber 2 is an inverted cone. A condensation component 401 corresponding to the gas phase collecting pipe 4 is installed at the center point of the top of the inner wall of the diverter chamber sleeve 1. The spiral direction, spiral diameter and pitch of the conical spiral group 102 and the diverter spiral group 201 are equal, and the spiral angles of the conical spiral group 102 and the diverter spiral group 201 are different. A plurality of reversing water pipes 202 corresponding to the diverter spiral group 201 are installed on the lower side of the water bath heating chamber 2. The two ends of the reversing water pipe 202 are connected to the inside of the water bath heating chamber 2, and the connection positions of the two ends of the reversing water pipe 202 and the water bath heating chamber 2 match the pitch of the diverter spiral 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 diversion chamber sleeve 1 and flow in the downward direction of the spiral, thereby forming a fish oil stock solution film on the bottom end of the inner wall of the diversion 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 diversion spiral plate group 201. Specifically, it is to ensure that the heat medium spirally flows downward along the structural shape of the diversion spiral plate group 201. For this purpose, the spiral direction and spiral diameter of the conical spiral plate group 102 and the diversion spiral plate group 201 are restricted. The spiral pitch is equal to that of the conical spiral plate group 102 and the diverting spiral plate group 201, and the spiral angles are different, ensuring that the heat medium is always in contact with the fish oil stock solution to exchange heat. 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 increases in temperature through the heat exchange process of the heat medium. Therefore, 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. The following contents are set 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 a conical shape, 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 be discharged from the gas phase collecting pipe 4. On the contrary, the heavier substances still remain 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. The difference between the diverter spiral set 201 and the conical spiral set 102 is that a gap is provided between the upper end of the conical spiral set 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 set 201 is completely in contact with the lower side of the diverter chamber sleeve 1 and the bottom end 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 set 102. In essence, the fish oil stock solution does not completely fill 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 housing 1 is directly related to the inclination angle of the lower end of the diverter housing 1, the viscosity of the fish oil, and the structural characteristics of the conical spiral plate 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, while 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. The temperature of the fish oil stock solution in the conical spiral plate group 102 can be directly calculated based on the Newton's law of cooling 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 channel through the diversion spiral plate group 201, the heat medium inside it 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 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 to the first gap flow channel and the n / 2th gap flow channel, or connected to 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 change in the two gap flow channels.

[0041] Example 3: Combined with Example 1 and Example 2, the following scheme is set through the motion control assembly:

[0042] Solution description: The action control assembly 5 set 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 concentration temperature upper limit To of the fish oil stock solution is set, so as to record the deviation value Tk between each reversing water pipe 202 and the concentration temperature upper limit To, and control the flow rate of the heat medium pumped into the water bath heating chamber 2 according to each deviation value Tk. Feedback is performed based on 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 concentration temperature upper limit To, thereby being 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 a water bath heating method, and restricts the flow mode of the heat medium and the fish oil concentrate. Specifically, the flow mode of the two is restricted by a conical spiral plate group and a diverter spiral plate 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 diverter 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 entire 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 intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fish oil concentration device with a variable temperature compensation structure includes a diversion chamber jacket and a water bath heating chamber arranged from top to bottom, characterized in that: The diversion chamber jacket and the water bath heating chamber are respectively equipped with a conical spiral sheet group and a diversion spiral sheet group, and injection ports are installed on the outside of the diversion chamber jacket and the water bath heating chamber; The fish oil concentrate and hot water are pumped into the diversion chamber sleeve and the water bath heating chamber respectively through the injection port, and 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. The upper end part of the cross section of the diversion chamber sleeve is conical, and the lower end part of the cross section of the diversion chamber sleeve is inverted truncated cone shape. 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 sealing layer is provided between the upper surface of the conical spiral sheet group and the top inner wall of the diversion chamber sleeve. Phase gap, the upper surface of the diverter spiral sheet group matches the lower surface of the diverter chamber sleeve, the lower surface of the diverter spiral sheet group matches the bottom end of the inner wall of the water bath heating chamber, the cross-section of the water bath heating chamber is in the shape of an inverted truncated cone, the spiral direction, spiral diameter and pitch 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, and a plurality of reversing water pipes corresponding to the diverter spiral sheet group are installed on the lower side of the water bath heating chamber, and the two ends of the reversing water pipe are connected to the interior of the water bath heating chamber; An action control component is installed at an external position of the water bath heating chamber. The number of reversing water pipes is set to m, and the temperature value in the reversing water pipe is represented as Tm and the upper limit of the concentration temperature To of the fish oil stock solution. The deviation value Tk between each reversing water pipe and the upper limit of the concentration temperature To is recorded. The flow rate of the hot water pump into the water bath heating chamber is controlled according to each deviation value Tk. Feedback is performed based on the deviation value Tk in each reversing water pipe and the temperature value at the liquid outlet until the deviation value Tk in each reversing water pipe is relatively stable and the temperature value at the liquid outlet is close to the upper limit of the concentration temperature To, thereby used to feedback the concentration temperature in the diversion chamber sleeve.

2. The fish oil concentrator with a variable temperature compensation structure according to claim 1, characterized in that: 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.

3. The fish oil concentrator with a variable temperature compensation structure according to claim 1, characterized in that: The connection positions of the two ends of the reversing water pipe and the water bath heating chamber match the pitch of the diversion spiral plate group.

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