A supercritical CO2 fluid extraction device for the production of natural plant-based hair conditioner

Abstract

This application relates to a supercritical CO2 fluid extraction device for the production of natural plant-based hair conditioner, belonging to the technical field of supercritical fluid extraction. It includes a frame, with a mounting plate fixedly connected to the middle of the frame's exterior. A pressure-resistant extraction vessel is fixedly connected to the left side of the mounting plate, and a delivery pipe is fixedly connected to the top of the pressure-resistant extraction vessel. A three-stage separation tank is fixedly connected to the other end of the delivery pipe, and an anti-backflow mechanism is fixedly connected to the exterior of the three-stage separation tank. A disassembly mechanism is fixedly connected to the exterior of the mounting plate. This application features an anti-backflow design that automatically controls the opening and closing of the sealing plate using fluid pressure. When the pump is operating, the liquid pressure pushes the sealing plate to compress the spring, forming a flow channel; when the pump stops, the spring rebounds, causing the sealing plate and sealing ring to fit tightly together, blocking the backflow path. This structure requires no additional power, relying on the medium's own pressure to achieve unidirectional flow, thus ensuring efficient liquid delivery.

Description

Technical Field

[0001] This application relates to the field of supercritical fluid extraction technology, and in particular to a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner. Background Technology

[0002] Supercritical CO2 fluid extraction equipment is widely used in the production of natural plant-based hair conditioners. It is suitable for gently and efficiently extracting heat-sensitive active ingredients such as plant essential oils, vitamins, and phytosterols from herbs and nuts such as rosemary and olives under low temperature and high pressure conditions. At the same time, the extraction of ingredients is precisely controlled by adjusting the pressure to avoid high temperature damaging the activity of the ingredients.

[0003] A search revealed Chinese publication number CN222039692U, which discloses a supercritical CO2 fluid extraction device for the production of natural plant-based hair conditioner. The device includes a housing, a cover plate movably connected to the top of the housing, a protective shell fixedly connected to the top of the cover plate, and a fixing column fixedly connected to one side of the protective shell. This supercritical CO2 fluid extraction device for the production of natural plant-based hair conditioner, through its housing, cover plate, protective shell, motor, rotating shaft, pulverizing disc, ultrafine filter, electric push rod, and extrusion plate, achieves high working efficiency. It can pre-treat natural plants by pulverizing them, and then extrude the liquid from the natural plants using extrusion, facilitating subsequent fluid extraction. Furthermore, the ultrafine filter acts as a barrier structure to prevent residue from the extruded liquid from affecting the quality of the hair conditioner, thus meeting user needs.

[0004] The aforementioned patent specification mentions that "the ultrafine filter can act as a barrier structure to prevent the storage of natural plant debris." During supercritical CO2 fluid extraction, if the liquid refluxes, it will carry impurities and solid particles such as plant debris generated during the extraction process. These particles enter pipes, valves, pumps, and other equipment components with the refluxed liquid, easily causing pipe blockage and affecting the normal flow of fluid. For example, if the pipe is blocked, the delivery volume of supercritical CO2 fluid will decrease, leading to a reduction in extraction efficiency. Simultaneously, valve blockage will cause valve malfunction, affecting the normal operation of the equipment. To address the above problems, a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner is proposed. Utility Model Content

[0005] The purpose of this application is to provide a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner, which aims to improve the problem that existing extraction devices cannot prevent liquid backflow.

[0006] This application provides a supercritical CO2 fluid extraction device for the production of natural plant-based hair conditioner, which adopts the following technical solution:

[0007] A supercritical CO2 fluid extraction device for the production of natural plant hair conditioner includes a frame, an installation plate fixedly connected to the middle of the frame, a pressure-resistant extraction vessel fixedly connected to the left side of the installation plate, a conveying pipe fixedly connected to the top of the pressure-resistant extraction vessel, a three-stage separation tank fixedly connected to the other end of the conveying pipe, an anti-backflow mechanism fixedly connected to the outside of the three-stage separation tank, and a disassembly and assembly mechanism fixedly connected to the outside of the installation plate.

[0008] The anti-backflow mechanism includes a connecting pipe, which is fixedly connected to the outside of the three-stage separator. A connecting housing is fixedly connected to the inside of the connecting pipe. A cross-shaped placement plate is fixedly connected to the inside of the connecting housing. A mounting housing is fixedly connected to the left side of the cross-shaped placement plate. A sliding rod is slidably connected inside the mounting housing. A mounting spring is sleeved on the outside of the sliding rod. A sealing assembly is fixedly connected to the outside of the sliding rod.

[0009] The above solution works as follows: During fluid transport, pressure pushes the sealing assembly to compress the mounting spring, causing the sliding rod to slide and form a passage; when transport stops, the spring rebounds, causing the sealing assembly to reset and tightly fit against the connecting housing to block backflow. A cross-shaped placement plate further stabilizes the fluid path. This design utilizes fluid pressure and spring force to automatically control the flow, requiring no additional energy. It ensures unidirectional transport of the natural plant hair conditioner extract while effectively preventing backflow contamination, ensuring a safe and efficient extraction process.

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

[0011] The sealing assembly includes a sealing plate, the outer side of which is fixedly connected to the outside of the sliding rod, and a sealing ring is fixedly connected inside the connecting housing. The outer side of the sealing plate fits against the outer side of the sealing ring.

[0012] The above solution involves a fixed connection between the sealing plate and the sliding rod. When fluid is being transported, pressure pushes the sealing plate to compress the spring and move it away from the sealing ring, forming a flow channel. When transport stops, the spring rebounds, causing the sealing plate to tightly adhere to the sealing ring. This design, through a planar sealing structure combined with spring preload, ensures no fluid leakage, effectively prevents backflow contamination of the extract, guarantees the continuity of the supercritical CO2 extraction process and the stability of product quality, and improves the reliability and service life of the equipment.

[0013] As a further description of the above technical solution:

[0014] The disassembly and assembly mechanism includes a mounting frame, which is externally fixedly connected to the front right side of the mounting plate. A connecting shaft is fixedly connected internally to the mounting frame, and a rotating clamping plate is rotatably connected externally to the connecting shaft. A telescopic rod is fixedly connected to the rear side of the rotating clamping plate, and a return spring is sleeved on the outside of the telescopic rod.

[0015] The above solution utilizes a connecting shaft and a rotating clamping plate to quickly release the fixation of the three-stage separator tank by pressing the rotating clamping plate and compressing the return spring. After release, the return spring pushes the rotating clamping plate back into place. This design leverages the lever principle and spring force to achieve tool-free quick assembly and disassembly, ensuring the stability of the three-stage separator tank during installation, facilitating equipment inspection and maintenance, and improving the ease of operation and practicality of the supercritical CO2 extraction unit.

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

[0017] A sliding lever is slidably connected to the top of the mounting plate. A cavity is opened inside the mounting plate. A limit plate is fixedly connected to the bottom of the sliding lever. A tension spring is sleeved on the outside of the sliding lever.

[0018] The above solution involves a sliding lever that works in conjunction with a tension spring via a limiting plate. When pulled upwards, the spring compresses the lever, disengaging it from the cavity and unlocking the three-stage separation tank. Upon release, the spring rebounds, pushing the lever back to its original position and locking it in place. This design utilizes the elastic potential energy of the tension spring to achieve automatic locking. It is simple to operate and requires no tools, allowing for quick assembly and disassembly of the separation tank while ensuring a secure connection through spring preload. This effectively prevents loosening during equipment operation, improving the maintenance efficiency and safety of the extraction unit.

[0019] As a further description of the above technical solution:

[0020] A condenser is fixedly connected to the top of the frame, a main compressor is fixedly connected to the outer left side of the frame, an input pipe is fixedly connected to the outer rear side of the three-stage separator, and a storage tank is fixedly connected to the outer bottom end of the input pipe.

[0021] The above scheme utilizes a condenser, main compressor, three-stage separator, and storage tank working in tandem. The main compressor pressurizes and delivers the fluid, the condenser cools the fluid, the three-stage separator separates the components, and the separated substances flow into the storage tank via an inlet pipe. Each component has a clearly defined function, forming a closed-loop system that ensures the efficient operation of the supercritical CO2 fluid extraction process, effectively improving the extraction efficiency and quality of natural plant-based hair conditioner, and ensuring stable storage and subsequent utilization of the materials.

[0022] As a further description of the above technical solution:

[0023] The pressure-resistant extraction vessel is fixedly connected to the top of its exterior with a feed inlet, and the three-stage separation tank is fixedly connected to the front of its exterior with an electric discharge valve.

[0024] The above solution allows for precise input of natural plant materials into the pressure-resistant extraction vessel, meeting the feeding requirements of supercritical CO2 extraction. The electric discharge valve of the three-stage separator enables remote control of the discharge of separated materials, precisely adjusting the discharge speed and flow rate. This combination ensures efficient raw material input while allowing flexible control of the discharge process according to process requirements, enhancing the automation of the extraction unit, reducing manual operation, and ensuring the continuity and stability of the hair conditioner production process.

[0025] As a further description of the above technical solution:

[0026] The sealing plate is slidably connected to the outside of the connecting housing, and the sliding rod is slidably connected to the outside of the connecting housing.

[0027] The above solution involves a sliding fit between the sealing plate and the sliding rod within the connecting housing. This ensures that the sealing plate can move smoothly along the inner wall of the housing during fluid transport, compressing the spring to create a passage. When transport stops, the spring pushes the sealing plate to precisely reset, ensuring a tight fit with the sealing ring. This design, through a precise sliding guide structure, prevents the sealing plate from shifting or jamming, ensures smooth operation of the anti-backflow mechanism, improves sealing reliability, effectively prevents extractant backflow, and ensures stable operation of the supercritical CO2 extraction unit.

[0028] As a further description of the above technical solution:

[0029] One end of the mounting spring is fixedly connected to the outside of the sealing plate, and the other end of the mounting spring is fixedly connected to the outside of the mounting housing.

[0030] The above solution involves connecting the sealing plate and the mounting housing at both ends of the spring. During fluid transport, pressure pushes the sealing plate to compress the spring, storing potential energy. When transport stops, the spring releases its potential energy, pushing the sealing plate back to its original position and tightly engaging with the sealing ring. This design utilizes the elastic deformation of the spring to achieve automatic resetting of the sealing plate, requiring no additional power. It ensures smooth forward fluid transport and quickly blocks the backflow path when transport stops, improving the response sensitivity and sealing reliability of the anti-backflow mechanism.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. In this utility model, the anti-backflow design utilizes fluid pressure to automatically control the opening and closing of the sealing plate. When the pump is working, the liquid pressure pushes the sealing plate to compress the spring, forming a flow channel; when the pump stops, the spring rebounds, causing the sealing plate and sealing ring to fit tightly together, blocking the backflow path. This structure requires no additional power, relying on the pressure of the medium itself to achieve unidirectional flow, which not only ensures the efficiency of liquid delivery but also effectively prevents equipment damage or contamination caused by liquid backflow, improving system reliability and safety.

[0033] 2. In this utility model, the design employs a double-locking mechanism to achieve rapid assembly and disassembly of the three-stage separation tank. Pulling the sliding lever compresses the tension spring, releasing the restriction on the rotating plate; pressing the rotating plate compresses the return spring, disengaging it from the mounting plate, allowing the tank to be removed. During installation, the spring automatically rebounds to lock in place, and the double locking ensures a secure connection. The operation requires only two actions: pulling and pressing, without the need for tools, significantly improving maintenance efficiency. Simultaneously, the spring preload ensures reliable sealing and reduces the risk of leakage. Attached Figure Description

[0034] Figure 1 This is a three-dimensional schematic diagram of a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner proposed in this utility model.

[0035] Figure 2 This is a schematic diagram of the three-stage separation tank of a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner proposed in this utility model.

[0036] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0037] Figure 4 This is a schematic diagram of the main compressor of a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner proposed in this utility model.

[0038] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0039] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Mounting plate; 3. Pressure-resistant extraction vessel; 4. Conveying pipe; 5. Three-stage separation tank; 6. Anti-backflow mechanism; 61. Connecting pipe; 62. Connecting housing; 63. Cross placement plate; 64. Mounting housing; 65. Sliding rod; 66. Mounting spring; 67. Sealing assembly; 671. Sealing plate; 672. Sealing ring; 7. Storage tank; 8. Disassembly and assembly mechanism; 81. Mounting bracket; 82. Connecting shaft; 83. Rotating clamping plate; 84. Telescopic rod; 85. Return spring; 86. Sliding clamping rod; 87. Limiting plate; 88. Cavity; 89. Tension spring; 9. Input pipe; 10. Condenser; 11. Main compressor; 12. Electric discharge valve; 13. Feed inlet. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0041] Example 1: Refer to Figures 1 to 3 This utility model provides an embodiment of a supercritical CO2 fluid extraction device for the production of natural plant hair conditioner. The device includes a frame 1 with internal reinforcing ribs to enhance its structural strength and withstand the weight of components such as the pressure-resistant extraction vessel 3, as well as the pressure generated during operation. A mounting plate 2 is fixedly connected to the middle of the frame 1. The mounting plate 2 has a smooth, polished surface to prevent material residue and corrosion. The pressure-resistant extraction vessel 3 is fixedly connected to the left side of the mounting plate 2, facilitating material addition, fluid transport, and real-time monitoring and control of the vessel's temperature and pressure parameters. A flange connection at the top allows for quick and sealed connection to the conveying pipe 4, ensuring no leakage under high pressure. The top of the pressure-resistant extraction vessel 3 is fixedly connected to the conveying pipe 4, which is made of pressure-resistant and corrosion-resistant seamless stainless steel. The pipe diameter is designed according to the flow requirements of the extraction device, and the inner wall of the pipe is smooth to reduce resistance during fluid transport. The other end of the conveying pipe 4 is fixedly connected to a three-stage separation tank 5, which is divided into three separation chambers, each with different temperature and pressure control zones. By gradually reducing the pressure and adjusting the temperature, the solubility of supercritical CO2 fluid is changed, thereby achieving the gradual separation and enrichment of plant active ingredients.

[0042] Specifically, the frame 1 is internally reinforced with ribs to support the pressure-resistant extraction vessel 3 and other components. The mounting plate 2 at the middle of its exterior is polished to prevent material residue and corrosion. The pressure-resistant extraction vessel 3 on the left side of the mounting plate 2 is sealed to the high-pressure stainless steel conveying pipe 4 through the top flange, which facilitates material addition and parameter monitoring. The conveying pipe 4 sends the mixture of supercritical CO2 fluid and plant material into the three-stage separation tank 5. The three-stage separation chamber of this tank gradually reduces the pressure and adjusts the temperature to change the solubility of the supercritical CO2 fluid, thereby achieving the gradual separation and enrichment of the effective components of the plant, providing high-purity extraction raw materials for the production of natural plant hair conditioner.

[0043] The external fixed connection of the three-stage separator 5 is an anti-backflow mechanism 6, and the external fixed connection of the mounting plate 2 is a disassembly and assembly mechanism 8. The disassembly and assembly mechanism 8 includes a mounting bracket 81. The vertical plate of the mounting bracket 81 has a through hole for mounting the connecting shaft 82, and the horizontal plate provides a stable support foundation for the entire disassembly and assembly mechanism 8, ensuring the stability of the mechanism during disassembly and assembly. The external fixed connection of the mounting bracket 81 is located at the front right side of the mounting plate 2. The internal fixed connection of the mounting bracket 81 is the connecting shaft 82. The connecting shaft 82 passes through the through hole on the vertical plate of the mounting bracket 81 and is axially positioned by the shaft shoulder and retaining ring to ensure its position on the mounting bracket 81. A rotating clamping plate 83 is rotatably connected to the outside of the fixed connecting shaft 82. The rotating clamping plate 83 is a rectangular metal plate with rounded edges to prevent scratching operators. A shaft hole adapted to the connecting shaft 82 is opened at its center, allowing it to rotate on the connecting shaft 82. A telescopic rod 84 is fixedly connected to the rear side of the rotating clamping plate 83. The telescopic rod 84 consists of an inner rod and an outer tube, both made of stainless steel. The inner rod can slide and extend within the outer tube. A return spring 85 is sleeved on the outside of the telescopic rod 84, made of high-elasticity stainless steel spring wire. One end of the return spring 85 abuts against the rotating clamping plate 83, and the other end abuts against the mounting bracket 81 or other fixed structure.

[0044] Specifically, the anti-backflow mechanism 6 outside the three-stage separator 5 prevents fluid backflow and ensures the stability of the extraction process. The disassembly and assembly mechanism 8 at the front right side of the mounting plate 2 is supported by the mounting bracket 81. Its vertical plate through hole is used to install the connecting shaft 82. The connecting shaft 82 is fixed in position by the shaft shoulder and retaining ring. The rotating clamping plate 83 is fitted on the connecting shaft 82, and the edges are rounded to prevent scratches. The telescopic rod 84 on the rear side is composed of an inner rod and an outer tube made of stainless steel. It can slide and extend. The return spring 85 is fitted on the telescopic rod 84, with one end abutting against the rotating clamping plate 83 and the other end abutting against the fixed structure. During operation, pressing the rotating clamping plate 83 drives the telescopic rod 84 to extend and retract, compressing the return spring 85 to realize the disassembly and assembly of the components. After releasing, the spring returns to its original position, ensuring a stable connection and facilitating device maintenance and debugging.

[0045] Reference Figures 2 to 3The anti-backflow mechanism 6 includes a connecting pipe 61, which can withstand the impact of high-pressure fluid in the pipeline, ensuring that there will be no leakage or detachment during the operation of the device, and providing a stable fluid transmission channel for the entire anti-backflow mechanism 6. The external of the connecting pipe 61 is fixedly connected to the outside of the three-stage separation tank 5. The internal of the connecting pipe 61 is fixedly connected to a connecting housing 62. The connecting housing 62 is tightly connected to the connecting pipe 61 by means of threaded connection or flange connection. A high-temperature and high-pressure resistant sealing gasket is provided at the connection to ensure the sealing of the connection and prevent fluid leakage from the interface. The internal of the connecting housing 62 is fixedly connected to a cross placement plate 63. The four branch ends of the cross placement plate 63 are fixed to the inner wall of the connecting housing 62, which plays the role of supporting and separating the internal space. The external left side of the cross placement plate 63 is fixedly connected to an installation housing 64, which provides space for the sliding rod 65 to slide and restricts the movement direction of the sliding rod 65, ensuring that it slides along a predetermined trajectory to achieve the anti-backflow function. The sliding rod 65 is slidably connected inside the installation housing 64.

[0046] Specifically, the connecting pipe 61 is fixed to the three-stage separator 5, withstands the impact of high-pressure fluid, and provides a transmission channel. Its internal connecting housing 62 is tightly connected to the connecting pipe 61 via threads or flanges, supplemented by sealing gaskets to prevent leakage. The cross-shaped placement plate 63 inside the connecting housing 62 supports the partition space, and the housing 64 on its left side provides sliding guidance for the sliding rod 65. When the supercritical CO2 fluid flows forward, the fluid pressure pushes the sliding rod 65 to compress the return spring 85, opening the channel. When the fluid flows backward, the return spring 85 pushes the sliding rod 65 back to its original position, and the seal adheres to the inner wall of the connecting pipe 61 to block the channel, achieving an anti-backflow function. This ensures stable unidirectional fluid delivery during extraction and prevents backflow of components within the separator from affecting extraction efficiency.

[0047] When the fluid flows normally, the sliding rod 65 is in a specific position under the fluid pressure. When a backflow tendency occurs, the sliding rod 65 slides rapidly, driving the sealing assembly 67 to actuate and prevent fluid backflow. It is the core moving component for realizing the anti-backflow function. A mounting spring 66 is sleeved on the outside of the sliding rod 65. When the fluid pressure changes, especially when backflow pressure occurs, the mounting spring 66 can absorb and buffer the pressure. At the same time, after the pressure disappears, it pushes the sliding rod 65 to reset by its own elastic potential energy, ensuring that the anti-backflow mechanism 6 can work repeatedly and stably. The sealing assembly 67 is fixedly connected to the outside of the sliding rod 65. 7 includes a sealing plate 671. When the sliding rod 65 slides under the action of backflow pressure, the sealing plate 671 can quickly and tightly fit with the sealing ring 672 to block the fluid channel and prevent the backflow of supercritical CO2 fluid and extracted components. The outer side of the sealing plate 671 is fixedly connected to the outside of the sliding rod 65, and the sealing ring 672 is fixedly connected to the inside of the connecting housing 62. When it is necessary to prevent backflow, the sealing plate 671 and the sealing ring 672 fit tightly together. The friction between the two and the elastic deformation of the sealing material are used to achieve a reliable seal and prevent the fluid from flowing backward. The outer side of the sealing plate 671 fits with the outer side of the sealing ring 672.

[0048] Specifically, the connecting pipe 61 is fixed to the three-stage separator 5, and the internal connecting shell 62 is sealed to ensure no leakage. The cross-shaped placement plate 63 supports the mounting shell 64. When the supercritical CO2 fluid flows forward, the pressure pushes the sliding rod 65 to compress the mounting spring 66, allowing the fluid to flow smoothly. If a backflow tendency occurs, the mounting spring 66 releases its elastic potential energy, pushing the sliding rod 65 to quickly reset, causing the sealing plate 671 of the sealing assembly 67 to tightly fit with the sealing ring 672 inside the connecting shell 62. The backflow channel is blocked by friction and the elastic deformation of the sealing material. This mechanism achieves stable unidirectional delivery of supercritical CO2 fluid through the linkage of "fluid pressure drive - spring reset - sealing component blocking," preventing the backflow of extracted components from affecting the separation efficiency and ensuring the reliable operation of the extraction process.

[0049] Reference Figures 3 to 5A sliding lever 86 is slidably connected to the top of the mounting plate 2. A cavity 88 is opened inside the mounting plate 2. A limit plate 87 is fixedly connected to the bottom of the sliding lever 86. A tension spring 89 is sleeved on the outside of the sliding lever 86. A condenser 10 is fixedly connected to the top of the frame 1. The condenser 10 has an independent cooling water circulation channel. The cooling water inlet and outlet are equipped with flow regulating valves and temperature sensors, which can monitor and adjust the cooling water flow rate and temperature in real time. A main compressor 11 is fixedly connected to the left side of the frame 1. The main compressor 11 is equipped with a variable frequency speed control system, which can precisely control the compression ratio and flow rate of CO2 gas by adjusting the motor speed according to different extraction process requirements. An input pipe 9 is fixedly connected to the rear side of the three-stage separation tank 5. The input pipe 9 is made of high-pressure resistant and corrosion-resistant seamless stainless steel. The pipe diameter is calculated and selected according to the flow requirements and fluid characteristics of the device to ensure smooth fluid delivery. The bottom of the input pipe 9 is fixedly connected to the storage tank 7, the top of the pressure-resistant extraction vessel 3 is fixedly connected to the feed port 13, and the front of the three-stage separation tank 5 is fixedly connected to the electric discharge valve 12. The operator can remotely set the valve opening time, opening degree and running speed to accurately control the discharge volume and discharge speed, ensuring that the separated plant effective components are discharged smoothly, while effectively avoiding CO2 fluid leakage. The sealing plate 671 is externally slidably connected to the inside of the connecting housing 62, the sliding rod 65 is externally slidably connected to the inside of the connecting housing 62, one end of the mounting spring 66 is fixedly connected to the outside of the sealing plate 671, and the other end of the mounting spring 66 is fixedly connected to the outside of the mounting housing 64.

[0050] Specifically, frame 1 supports all components, the top condenser 10 is temperature-controlled via cooling water circulation, and the main compressor 11 on the left side uses frequency conversion to adjust the CO2 compression ratio and flow rate. CO2 from storage tank 7 enters the pressure-resistant extraction vessel 3 via input pipe 9, while material is added through inlet 13. After extraction under high pressure, it flows through conveying pipe 4 to the tertiary separation tank 5, where effective components are separated by pressure reduction and temperature adjustment. An electric discharge valve 12 controls the discharge. A sliding lever 86 on mounting plate 2, in conjunction with a tension spring 89, enables quick assembly and disassembly of components. In the anti-backflow mechanism 6, the sliding rod 65, driven by fluid pressure, causes the sealing plate 671 to engage or disengage from the sealing ring 672. The mounting spring 66 ensures reset, preventing fluid backflow and ensuring a stable and efficient extraction process.

[0051] Working principle: When preventing backflow of liquid, liquid is pumped into the connecting pipe 61 through the pump body, which in turn squeezes the sealing plate 671. The sealing plate 671 then squeezes the mounting spring 66 through the sliding rod 65, causing the mounting spring 66 to deform. This allows the sliding rod 65 to slide inside the mounting housing 64, allowing the liquid to enter the three-stage separation tank 5 through the cross placement plate 63. When the pump stops pumping, the mounting spring 66 rebounds, causing the sliding rod 65 to drive the sealing plate 671 to fit against the sealing ring 672, thus preventing backflow of liquid.

[0052] When disassembling and assembling multiple three-stage separation tanks 5, by pulling the sliding latch 86, the sliding latch 86 slides inside the cavity 88 through the limiting plate 87, which in turn causes the limiting plate 87 to press the tension spring 89 against the rotating clamp 83, causing the sliding latch 86 to separate from the rotating clamp 83. Then, by pressing the rotating clamp 83, the rotating clamp 83 presses the return spring 85 outside the telescopic rod 84, which in turn causes the rotating clamp 83 to separate from the mounting plate 2, allowing the three-stage separation tank 5 to be removed. When installing the three-stage separation tank 5, by placing the three-stage separation tank 5 inside the mounting plate 2, by releasing the rotating clamp 83, the return spring 85 rebounds, which in turn causes the rotating clamp 83 to lock onto the mounting plate 2. Then, by releasing the sliding latch 86, the tension spring 89 rebounds, which in turn causes the sliding latch 86 to lock onto the rotating clamp 83.

[0053] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A supercritical CO2 fluid extraction device for the production of natural plant hair conditioner, comprising a frame (1), characterized in that: A mounting plate (2) is fixedly connected to the middle of the outer side of the frame (1). A pressure-resistant extraction vessel (3) is fixedly connected to the left side of the mounting plate (2). A conveying pipe (4) is fixedly connected to the top of the pressure-resistant extraction vessel (3). A three-stage separation tank (5) is fixedly connected to the other end of the conveying pipe (4). An anti-backflow mechanism (6) is fixedly connected to the outside of the three-stage separation tank (5). A disassembly and assembly mechanism (8) is fixedly connected to the outside of the mounting plate (2). The anti-backflow mechanism (6) includes a connecting pipe (61), which is fixedly connected to the outside of the three-stage separation tank (5). A connecting housing (62) is fixedly connected inside the connecting pipe (61). A cross-shaped placement plate (63) is fixedly connected inside the connecting housing (62). An installation housing (64) is fixedly connected to the left side of the cross-shaped placement plate (63). A sliding rod (65) is slidably connected inside the installation housing (64). An installation spring (66) is sleeved on the outside of the sliding rod (65). A sealing assembly (67) is fixedly connected to the outside of the sliding rod (65).

2. The supercritical CO2 fluid extraction device for producing natural plant hair conditioner according to claim 1, characterized in that: The sealing assembly (67) includes a sealing plate (671), the outside of which is fixedly connected to the outside of the sliding rod (65), and a sealing ring (672) is fixedly connected inside the connecting housing (62), with the outside of the sealing plate (671) and the outside of the sealing ring (672) fitting together.

3. The supercritical CO2 fluid extraction apparatus for producing natural plant-based hair conditioner according to claim 1, characterized in that: The disassembly and assembly mechanism (8) includes a mounting bracket (81). The mounting bracket (81) is externally fixedly connected to the front right side of the mounting plate (2). A connecting shaft (82) is internally fixedly connected to the mounting bracket (81). A rotating plate (83) is rotatably connected to the outside of the connecting shaft (82). A telescopic rod (84) is fixedly connected to the rear side of the rotating plate (83). A return spring (85) is sleeved on the outside of the telescopic rod (84).

4. The supercritical CO2 fluid extraction device for producing natural plant hair conditioner according to claim 3, characterized in that: The mounting plate (2) has a sliding rod (86) slidably connected to its outer top end. The mounting plate (2) has a cavity (88) inside. The bottom of the sliding rod (86) is fixedly connected to a limiting plate (87). The sliding rod (86) is fitted with a tension spring (89).

5. The supercritical CO2 fluid extraction device for producing natural plant hair conditioner according to claim 1, characterized in that: A condenser (10) is fixedly connected to the top of the frame (1), a main compressor (11) is fixedly connected to the left side of the frame (1), an input pipe (9) is fixedly connected to the rear side of the three-stage separator (5), and a storage tank (7) is fixedly connected to the bottom of the input pipe (9).

6. The supercritical CO2 fluid extraction apparatus for producing natural plant hair conditioner according to claim 1, characterized in that: The pressure-resistant extraction vessel (3) is fixedly connected to the top of the outside with a feed inlet (13), and the three-stage separation tank (5) is fixedly connected to the front of the outside with an electric discharge valve (12).

7. The supercritical CO2 fluid extraction device for producing natural plant hair conditioner according to claim 2, characterized in that: The sealing plate (671) is externally slidably connected to the inside of the connecting housing (62), and the sliding rod (65) is externally slidably connected to the inside of the connecting housing (62).

8. The supercritical CO2 fluid extraction device for producing natural plant hair conditioner according to claim 2, characterized in that: One end of the mounting spring (66) is fixedly connected to the outside of the sealing plate (671), and the other end of the mounting spring (66) is fixedly connected to the outside of the mounting housing (64).

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