Thermal insulation extraction interlayer storage tank

Abstract

The utility model relates to the technical field of packed tower extraction equipment, and particularly discloses a heat-preservation extraction interlayer storage tank which comprises an extraction tank, a gas inlet pipe and a liquid outlet pipe which are arranged at the bottom of the outer wall of the extraction tank, a gas outlet pipe and a liquid inlet pipe which are arranged at the top of the extraction tank, and two packing layers arranged in the extraction tank, a heat preservation bin is formed in a jacket of the extraction tank, a spiral flow guide pipe spirally wound on the inner wall of the heat preservation bin is fixedly installed in the heat preservation bin, and the two ends of the spiral flow guide pipe are connected with a water inlet pipe and a water outlet pipe respectively; the local temperature difference is eliminated by indirectly and directly heating a heating medium in two paths, the plate heat exchanger recovers waste heat to form closed circulation, the flow and the flow direction of the heating medium are dynamically adjusted according to temperature data, efficient mass transfer, energy conservation, consumption reduction and multi-stage temperature control adaptation are achieved, the extraction effect is remarkably improved, and the extraction efficiency is improved. And the flexibility is high.

Description

Technical Field

[0001] This utility model relates to the field of packed tower extraction equipment, and specifically discloses a heat-insulated extraction jacketed storage tank. Background Technology

[0002] In many industrial sectors such as chemical, food, and pharmaceutical industries, extraction is a key separation method that has a significant impact on production efficiency, product quality, and energy consumption.

[0003] In terms of heat transfer, many traditional extraction devices rely solely on simple jacket heating or single internal coil heating. This single heating method cannot ensure temperature uniformity within the extraction tank, especially in large tanks where the packing layer depends solely on solvent flow for heat transfer, lacking direct temperature control. This not only reduces mass transfer efficiency and prolongs extraction time but may also damage some heat-sensitive components due to localized excessively high or low temperatures, severely impacting extraction results and product quality. Furthermore, most traditional extraction devices lack integrated waste heat recovery systems, resulting in direct discharge of waste heat medium and insufficient thermal energy utilization. Therefore, improvements are needed. Utility Model Content

[0004] This utility model proposes a heat-insulated extraction jacketed storage tank, which eliminates local temperature differences by indirectly and directly heating the heat medium in two paths, recovers waste heat through a plate heat exchanger to form a closed loop, and dynamically adjusts the flow direction of the heat medium according to temperature data, thereby achieving efficient mass transfer, energy saving and consumption reduction, and multi-stage temperature control adaptation, significantly improving the extraction effect and exhibiting high flexibility.

[0005] This utility model is implemented as follows: a heat-insulated extraction jacketed storage tank includes an extraction tank, an air inlet pipe and a liquid outlet pipe disposed at the bottom of the outer wall of the extraction tank, an air outlet pipe disposed at the top of the extraction tank and a liquid inlet pipe disposed on the outer wall, and two packing layers disposed inside the extraction tank. A heat-insulating chamber is provided inside the jacket of the extraction tank, and a spiral guide pipe in a spiral shape is fixedly installed inside the heat-insulating chamber and wound around the inner wall of the heat-insulating chamber. The two ends of the spiral guide pipe are respectively connected to a water inlet pipe and a water outlet pipe.

[0006] Both of the packing layers are equipped with packing coils inside, and the two packing coils are connected by a connecting pipe. The inlet and outlet of the packing coils are connected to the water inlet pipe and the water outlet pipe, respectively.

[0007] A heat exchange mechanism is provided on the outside of the extraction tank.

[0008] As a preferred embodiment of the heat-insulating extraction jacketed storage tank of this utility model, the heat exchange mechanism includes a plate heat exchanger connected to the outlet end of the outlet pipe, and a booster pump is connected to the drainage pipe after heat exchange of the plate heat exchanger. The booster pump is used to increase the circulation pressure of the heat medium, and its output end is connected to a water pipe. The other end of the water pipe is connected to the inlet pipe.

[0009] As a preferred embodiment of the heat-insulating extraction jacketed storage tank of this utility model, the water pipe is a three-way pipe, and a temperature sensor is provided on the outer wall of the water pipe, with the probe of the temperature sensor extending into the interior of the water pipe.

[0010] As a preferred embodiment of the heat-insulating extraction jacketed storage tank of this utility model, the outer wall of the extraction tank is fixedly fitted with an insulation sleeve that is opposite to the position of the heat-insulating chamber, and the interior of the insulation sleeve is filled with insulation cotton.

[0011] As a preferred embodiment of the heat-insulated extraction jacketed storage tank of this utility model, the other ends of the inlet pipe and the outlet pipe extend to the outside of the extraction tank, and the other ends of the two coils are connected to the inlet pipe and the outlet pipe respectively through pipes. An electromagnetic flow valve is provided on the outer wall of the inlet pipe.

[0012] As a preferred embodiment of the heat-insulating extraction jacketed storage tank of this utility model, a first solenoid valve is provided on the outer wall of one end of the water pipe connected to the inlet pipe, and a second solenoid valve is provided on the other end of the water pipe.

[0013] The beneficial effects of this utility model are:

[0014] 1. By splitting the heat medium into two paths, one passing through the jacketed spiral guide pipe and the other entering the packing layer, the material and packing area inside the tank can be heated indirectly and directly, eliminating local temperature differences, effectively improving mass transfer efficiency, and helping to improve the extraction effect.

[0015] 2. By allowing the heat medium to complete heat exchange and then exchange heat with cold water through a plate heat exchanger to recover waste heat, and then forming a closed loop through a booster pump, the energy consumption of the heat medium is effectively reduced, and the load on external heat sources such as boilers is also significantly reduced, thus achieving the goal of energy saving.

[0016] 3. The temperature sensor monitors the temperature of the heat medium in real time and feeds it back to the PLC controller. The first and second solenoid valves dynamically adjust the flow rate and direction of the heat medium according to the temperature data, which can quickly switch the temperature requirements of different extraction stages, realize intelligent temperature control, and flexibly adapt to different extraction processes. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front sectional view of an insulated extraction jacketed storage tank according to the present invention.

[0019] Figure 2 This is a structural diagram of the insulated warehouse of this utility model.

[0020] Figure 3 This is a structural diagram of the coil of this utility model;

[0021] Figure 4 This is a top view of the thermal insulation sleeve of this utility model.

[0022] The diagram shows the following markings: 1. Extraction tank; 101. Inlet pipe; 102. Outlet pipe; 103. Packing layer; 104. Liquid inlet pipe; 105. Liquid outlet pipe; 2. Insulation chamber; 201. Guide pipe; 3. Insulation jacket; 301. Insulation cotton; 4. Water inlet pipe; 401. Electromagnetic flow valve; 5. Water outlet pipe; 6. Coil; 601. Connecting pipe; 7. Plate heat exchanger; 8. Water pipe; 801. Booster pump; 802. Temperature sensor; 803. First solenoid valve. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0024] Please see Figures 1-4 A heat-insulated extraction jacketed storage tank includes an extraction tank 1, an air inlet pipe 101 and a liquid outlet pipe 105 disposed at the bottom of the outer wall of the extraction tank 1, an air outlet pipe 102 disposed at the top of the extraction tank 1 and a liquid inlet pipe 104 disposed on the outer wall, and two packing layers 103 disposed inside the extraction tank 1. A heat-insulating chamber 2 is provided inside the jacket of the extraction tank 1. A spiral guide pipe 201, which is spirally coiled around the inner wall of the heat-insulating chamber 2, is fixedly installed inside the heat-insulating chamber 2. A water inlet pipe 4 and a water outlet pipe 5 are respectively connected to both ends of the spiral guide pipe 201.

[0025] Both packing layers 103 are equipped with packing coils 6 inside, and the two packing coils 6 are connected by a connecting pipe 601. The inlet and outlet of the packing coils 6 are connected to the inlet pipe 4 and the outlet pipe 5, respectively.

[0026] A heat exchange mechanism is provided on the outside of the extraction tank 1.

[0027] In this embodiment: the electromagnetic flow valve 401 is opened, and the heat medium (hot water) is input into an external heat source (such as a boiler, not shown in the figure). The heat medium is then pumped into the inlet pipe 4 by an external water pump. At this time, part of the heat medium in the inlet pipe 4 flows into the jacketed spiral guide pipe 201, indirectly heating the material in the tank through the tank wall. The other part enters the two packing layers 103, directly heating the packing area, eliminating local temperature differences, and improving mass transfer efficiency. After the heat medium completes the heat exchange, it flows out from the outlet pipe 5 and enters the plate heat exchanger 7 to exchange heat with the cold water. The process involves replacing and recovering waste heat, then starting the booster pump 801 to pressurize the cooled heat medium, which returns to the inlet pipe 4 through the water pipe 8, forming a closed loop. The temperature sensor 802 monitors the temperature of the heat medium in the water pipe 8 in real time and feeds it back to the PLC controller. The first solenoid valve 803 and the second solenoid valve dynamically adjust the flow rate and direction of the heat medium according to the temperature data, which can quickly switch the temperature requirements of different extraction stages (such as heating extraction, constant temperature maintenance, and cooling discharge), effectively reducing the energy consumption of the heat medium and significantly reducing the load on external heat sources such as boilers.

[0028] As a technical optimization of this utility model, the heat exchange mechanism includes a plate heat exchanger 7 connected to the outlet end of the outlet pipe 5. The drain pipe after heat exchange of the plate heat exchanger 7 is connected to a booster pump 801. The booster pump 801 is used to increase the circulation pressure of the heat medium. Its output end is connected to a water pipe 8. The other end of the water pipe 8 is connected to the inlet pipe 4.

[0029] In this embodiment: the water heated by the plate heat exchanger 7 can enter the interior of the three-way water pipe 8. The other two ends of the three-way water pipe 8 are connected to the inlet pipe 4 and the boiler, respectively. The booster pump 801 is started to increase the circulating pressure of the heat transfer medium water to a set value (e.g., 0.3 MPa). At this time, the heat transfer medium water can enter the guide pipe 201 through the inlet pipe 4.

[0030] As a technical optimization of this utility model, the water pipe 8 is a three-way pipe, and a temperature sensor 802 is provided on the outer wall of the water pipe 8, with the probe of the temperature sensor 802 extending into the interior of the water pipe 8.

[0031] In this embodiment: by setting a temperature sensor 802, the temperature sensor 802 can monitor the temperature inside the water pipe 8, so as to determine whether the temperature after heat exchange can provide a heat preservation effect for the extraction tank 1.

[0032] As a technical optimization of this utility model, an insulation sleeve 3 is fixedly sleeved on the outer wall of the extraction tank 1, which is opposite to the position of the insulation chamber 2, and the inside of the insulation sleeve 3 is filled with insulation cotton 301.

[0033] In this embodiment: the heat insulation cotton 301 isolates the heat exchange with the environment and increases the heat insulation of the extraction tank 1.

[0034] As a technical optimization of this utility model, the other ends of the water inlet pipe 4 and the water outlet pipe 5 extend to the outside of the extraction tank 1, and one end of the water outlet pipe 5 is connected to the other ends of the two coils 6 of the plate heat exchanger 7 through pipes respectively to the water inlet pipe 4 and the water outlet pipe 5. An electromagnetic flow valve 401 is provided on the outer wall of the water inlet pipe 4.

[0035] In this embodiment: the electromagnetic flow valve 401 can control the water flow rate in the inlet pipe 4, and the outlet pipe 5 can pass the waste heat medium into the plate heat exchanger 7 for heat exchange and recycling.

[0036] As a technical optimization of this utility model, a first solenoid valve 803 is provided on the outer wall of one end of the water pipe 8 connected to the water inlet pipe 4, and a second solenoid valve is provided on the other end of the water pipe 8.

[0037] In this embodiment: the first solenoid valve 803 and the second solenoid valve are used to control the opening and closing of the pipes at both ends of the water pipe 8, respectively.

[0038] The working principle and usage process of this utility model are as follows: The device is electrically connected to an external power supply and a PLC controller. One end of the water pipe 8, equipped with a second solenoid valve, is connected to the boiler and the water supply pipe (not shown in the figure) through pipes. In use, the solenoid flow valve 401 is opened to input the heat medium into an external heat source (such as a boiler, not shown in the figure). The heat medium is then pumped into the inlet pipe 4 by an external water pump. At this time, the heat medium in the inlet pipe 4 is divided into two paths. One part flows into the jacketed spiral guide pipe 201 and spirally flows along the inner wall of the extraction tank 1 jacket, indirectly heating the material in the tank through the tank wall. The other part enters the lower packing layer 103 and enters the upper packing layer 103 through the connecting pipe 601, directly heating the packing area. After the heat medium completes the heat exchange, it flows out from the outlet pipe 5 and enters the plate heat exchanger 7. By passing cold water through the plate heat exchanger 7, the waste heat medium flowing out from the outlet pipe 5 exchanges heat with the cold water. Waste heat is recovered, and the booster pump 801 is started to pressurize the cooled heat medium. The heat medium is then returned to the inlet pipe 4 through the water pipe 8, forming a closed loop. The temperature sensor 802 monitors the temperature of the heat medium in the water pipe 8 in real time and feeds it back to the PLC controller. The first solenoid valve 803 and the second solenoid valve dynamically adjust the flow rate and direction of the heat medium according to the temperature data. When the temperature sensor 802 detects that the temperature of the heat medium is lower than the set value, the PLC controller opens the second solenoid valve and sends part of the cooled heat medium back to the boiler through the water supply pipe for reheating and then injecting it into the inlet pipe 4 to quickly raise the temperature. The water that has been heated by heat exchange is then sent to the boiler for reheating. If the temperature of the heat medium is too high, the PLC controller controls the solenoid flow valve 401 to close and the first solenoid valve 803 and the second solenoid valve to open. Cold water (or low-temperature heat medium) can be injected into the water supply pipe and mixed and cooled through the water pipe 8 to prevent overheating. The insulation cotton 301 further isolates the heat exchange with the environment.

[0039] During extraction, the extraction solvent enters the tank through the liquid inlet pipe 104, and the raw material (such as plant debris) is added through the air inlet pipe 101. The solvent and the raw material come into countercurrent contact in the packing layer 103. The packing provides a huge specific surface area to promote the dissolution of components. The precise temperature control of the packing coil 6 avoids the degradation of heat-sensitive components (such as essential oils and enzymes). The liquid enriched with the target components is discharged from the liquid outlet pipe 105, and the waste gas is treated or recovered through the air outlet pipe 102 (existing technology).

[0040] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A heat-insulated extraction jacketed storage tank, comprising an extraction tank (1), an air inlet pipe (101) and a liquid outlet pipe (105) disposed at the bottom of the outer wall of the extraction tank (1), an air outlet pipe (102) disposed at the top of the extraction tank (1) and a liquid inlet pipe (104) disposed on the outer wall, and two packing layers (103) disposed inside the extraction tank (1), characterized in that: The extraction tank (1) has a heat preservation chamber (2) inside its jacket. A spiral guide pipe (201) is fixedly installed inside the heat preservation chamber (2) and is spirally coiled around the inner wall of the heat preservation chamber (2). The two ends of the spiral guide pipe (201) are respectively connected to an inlet pipe (4) and an outlet pipe (5). The two packing layers (103) are each provided with a packing coil (6), the two packing coils (6) are connected by a connecting pipe (601), and the inlet and outlet of the packing coil (6) are connected to the water inlet pipe (4) and the water outlet pipe (5) respectively. A heat exchange mechanism is provided on the outside of the extraction tank (1).

2. The heat-insulated extraction jacketed storage tank according to claim 1, characterized in that: The heat exchange mechanism includes a plate heat exchanger (7) connected to the outlet end of the outlet pipe (5). The drain pipe after heat exchange of the plate heat exchanger (7) is connected to a booster pump (801). The booster pump (801) is used to increase the pressure of the heat medium circulation. Its output end is connected to a water pipe (8). The other end of the water pipe (8) is connected to the inlet pipe (4).

3. The heat-insulated extraction jacketed storage tank according to claim 2, characterized in that: The water pipe (8) is a three-way pipe, and a temperature sensor (802) is provided on the outer wall of the water pipe (8). The probe of the temperature sensor (802) extends into the interior of the water pipe (8).

4. The heat-insulated extraction jacketed storage tank according to claim 1, characterized in that: The outer wall of the extraction tank (1) is fixedly fitted with an insulation sleeve (3) that is opposite to the position of the insulation chamber (2), and the inside of the insulation sleeve (3) is filled with insulation cotton (301).

5. The heat-insulated extraction jacketed storage tank according to claim 1, characterized in that: The other ends of the inlet pipe (4) and the outlet pipe (5) extend to the outside of the extraction tank (1). The other ends of the two coils (6) are connected to the inlet pipe (4) and the outlet pipe (5) respectively through pipes. An electromagnetic flow valve (401) is provided on the outer wall of the inlet pipe (4).

6. The heat-insulated extraction jacketed storage tank according to claim 2, characterized in that: A first solenoid valve (803) is provided on the outer wall of one end of the water pipe (8) connected to the water inlet pipe (4), and a second solenoid valve is provided on the other end of the water pipe (8).

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