Supercritical carbon dioxide treatment equipment for uvioresistant flax

Abstract

The utility model relates to the technical field of linen fiber processing, in particular to supercritical carbon dioxide treatment equipment for uvioresistant linen, which is characterized in that a sealing cover assembly is opened, linen fibers of a hanging assembly are taken down, and the linen fibers rise along with the sealing cover assembly, so that the linen fibers are prevented from being manually taken from the inside of a pressure container; comprising a supporting frame, a gas storage tank, a pressure container and a controller, the gas storage tank and the pressure container are arranged at the bottom end of the interior of the supporting frame, the controller is installed at the front end of the pressure container, the sealing cover assembly is arranged at the top end of the supporting frame, and the sealing cover assembly is used for sealing the top end of the pressure container; a hanging assembly is arranged at the bottom end of the sealing cover assembly and used for hanging linen fibers, and a double-pump assembly is arranged at the bottom end in the supporting frame and used for transferring carbon dioxide between the gas storage tank and the pressure container.

Description

Technical Field

[0001] This utility model relates to the technical field of flax fiber processing, and in particular to a supercritical carbon dioxide treatment device for UV-resistant flax. Background Technology

[0002] In the processing of UV-resistant flax, the use of supercritical carbon dioxide treatment equipment is a common method, but not the only one. Supercritical carbon dioxide treatment equipment helps flax fibers better absorb UV protectants and improves the fibers' UV resistance. This equipment converts carbon dioxide into a supercritical state, giving it properties similar to both liquid and gas, thus allowing for better penetration and treatment of the fibers.

[0003] In the prior art, patent document CN215540763U discloses a supercritical reaction device using carbon dioxide, including a frame; a reactor body mounted on the frame via a tilting seat, the tilting seat being driven to tilt by a drive assembly; a receiving tray disposed on the frame and located on the lower side of the reactor body; a reactor cover mounted on the frame and located on the upper side of the reactor body, the reactor cover being driven to lift by a lifting cylinder for docking with the reactor body, and the reactor cover being equipped with a stirring shaft inserted into the reactor body; and a feeding vessel disposed on the frame and located on the side of the reactor body, the feeding vessel being driven to approach the reactor body by a translation cylinder.

[0004] During use, it was found that when the above-mentioned device was used to process flax fibers for UV protection, the flax fibers were placed as a whole into the reaction vessel. After processing, they needed to be manually removed, which was not very convenient. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a supercritical carbon dioxide treatment device for UV-resistant flax to improve the processing efficiency of flax fibers.

[0006] This utility model discloses a supercritical carbon dioxide treatment device for UV-resistant flax, comprising a support frame, a gas storage tank, a pressure vessel, and a controller. The gas storage tank and pressure vessel are located at the bottom of the support frame, and the controller is installed at the front of the pressure vessel. The device also includes a sealing cap assembly, a hanging assembly, and a dual-pump assembly. A sealing cap assembly is located at the top of the support frame to seal the top of the pressure vessel. A hanging assembly is located at the bottom of the sealing cap assembly to hang flax fibers. A dual-pump assembly is located at the bottom of the support frame to transfer carbon dioxide between the gas storage tank and the pressure vessel. Both the dual-pump assembly and the sealing cap assembly are electrically connected to the controller. The gas storage tank stores low-pressure carbon dioxide, which is then used to treat flax coated with… The flax fibers containing the UV-protective agent are hung on the bottom of the sealing cap assembly via a hanging component. The controller then operates the sealing cap assembly to seal the top of the pressure vessel. Next, a dual-pump assembly pressurizes and delivers carbon dioxide from the storage tank into the pressure vessel. The heating component is activated, causing the carbon dioxide to reach a supercritical state inside the pressure vessel, allowing it to permeate into the flax fibers and improve UV protection. After processing, the dual-pump assembly transfers the carbon dioxide back into the storage tank. Finally, the sealing cap assembly is opened, and the flax fibers are removed from the hanging component. The flax fibers rise with the sealing cap assembly, eliminating the need for manual access to the pressure vessel.

[0007] Preferably, the sealing cover assembly includes columns, a crossbeam, a hydraulic cylinder, a lifting plate, and a sealing cover. Columns are respectively installed on the front and rear sides of the top of the support frame. The tops of both sets of columns are connected to the bottom of the crossbeam. A hydraulic cylinder is installed at the top of the crossbeam, and the bottom moving end of the hydraulic cylinder extends below the crossbeam and connects to the top of the lifting plate. A sealing cover is installed at the bottom of the lifting plate, and a hanging assembly is installed at the bottom of the sealing cover. In use, after the hanging assembly clamps the flax fiber, the hanging assembly is placed below the sealing cover. The hydraulic cylinder is then extended, causing the lifting plate to move the sealing cover downwards. After the hanging assembly and the flax fiber enter the pressure vessel, the sealing cover seals the top of the pressure vessel, achieving automatic entry and exit of the flax fiber from the pressure vessel, thus improving convenience.

[0008] Preferably, the dual-pump assembly includes a high-pressure pump, a first high-pressure pipe, a second high-pressure pipe, a low-pressure pump, a first low-pressure pipe, and a second low-pressure pipe. The high-pressure pump and the low-pressure pump are respectively installed at the bottom of the inner side of the support frame. The input end of the high-pressure pump is connected to the output end of the first high-pressure pipe, which is connected to the front output end of the gas storage tank. The output end of the high-pressure pump is connected to the input end of the second high-pressure pipe, which is connected to the front right side of the pressure vessel. The input end of the low-pressure pump is connected to the output end of the first low-pressure pipe, which is connected to the rear right side of the pressure vessel. The output end of the low-pressure pump is connected to the input end of the second low-pressure pipe, which is connected to the outside of the gas storage tank. At the input end, both the high-pressure pump and the low-pressure pump are electrically connected to the controller. During use, the high-pressure pump is started and the low-pressure pump is turned off, allowing carbon dioxide from the gas storage tank to enter the pressure vessel through high-pressure pipes one and two. The high-pressure pump pressurizes the carbon dioxide, and in conjunction with the heating system of the pressure vessel, the carbon dioxide inside the pressure vessel is brought to a supercritical state. After processing, the low-pressure pump is started and the high-pressure pump is turned off. The cooling system is then activated to cool the carbon dioxide inside the pressure vessel, forming liquid carbon dioxide. The low-pressure pump then transports the low-pressure liquid carbon dioxide inside the pressure vessel through low-pressure pipes one and two to the gas storage tank for storage, enabling the repeated use of carbon dioxide.

[0009] Preferably, the hanging assembly includes a U-shaped hook, a clip, a slot, and an anti-detachment component. The first end of the U-shaped hook is higher than the second end of the U-shaped hook. The first end of the U-shaped hook is connected to the bottom end of the sealing cap. The second end of the U-shaped hook is provided with a slot. The clip is provided with a round hole. The U-shaped hook passes through the round hole to hang the clip. The bottom end of the sealing cap is provided with an anti-detachment component. The anti-detachment component cooperates with the slot to form a seal with the U-shaped hook. After the clip clamps the flax fibers coated with UV-resistant agent, the U-shaped hook hangs the clip through the round hole. Then, the anti-detachment component cooperates with the slot to form a seal, thereby preventing the clip from detaching from the U-shaped hook.

[0010] Preferably, the anti-detachment component includes a spring, a telescopic rod, a lifting block, and an insert block. The bottom end of the sealing cover is provided with a spring and a telescopic rod. The spring is fitted onto the outside of the telescopic rod. The bottom ends of both the spring and the telescopic rod are connected to the top end of the lifting block. The bottom end of the lifting block is provided with an insert block that is compatible with a slot. When the lifting block is raised, the insert block is moved away from the slot. When the clip is hooked onto the U-shaped hook, the lifting block is released, causing the lifting block to move downward under the action of the spring force. The insert block is inserted into the slot, preventing the clip from detaching from the U-shaped hook.

[0011] Preferably, it also includes reinforcing plates, and multiple sets of reinforcing plates are provided between the support frame and the gas storage tank; the support frame and the gas storage tank are strengthened by multiple sets of reinforcing plates to improve the connection strength.

[0012] Preferably, it also includes adjustable feet, with multiple sets of adjustable feet provided at the bottom of the support frame; the multiple sets of adjustable feet work together to provide stable support for the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The gas storage tank stores low-pressure carbon dioxide. Flax fibers coated with UV inhibitors are hung on the bottom of the sealing cap assembly via a hanging component. Then, the controller operates the sealing cap assembly to seal the top of the pressure vessel. After that, the dual pump assembly is operated to pressurize and transport the carbon dioxide inside the gas storage tank into the pressure vessel. The heating component is activated, so that the carbon dioxide is in a supercritical state inside the pressure vessel, thus permeating into the flax fibers, allowing the flax fibers to better absorb the UV inhibitors. After processing, the dual pump assembly is operated to transfer the carbon dioxide inside the pressure vessel back into the gas storage tank for storage. Then, the sealing cap assembly is opened, and the flax fibers hanging on the assembly are removed. The flax fibers rise with the sealing cap assembly, avoiding the need for manual removal of the flax fibers from inside the pressure vessel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is an exploded structural diagram of the present invention;

[0016] Figure 3 It is an enlarged structural diagram of structures such as low-pressure pumps and pressure vessels;

[0017] Figure 4 This is a first enlarged structural diagram of the U-shaped hook and sealing cap, etc.

[0018] Figure 5 This is a second enlarged structural diagram of the U-shaped hook and sealing cap, etc.

[0019] Figure 6 yes Figure 5 A partially enlarged structural diagram of section A in the middle;

[0020] The following are labeled in the attached diagram: 1. Support frame; 3. Gas tank; 4. Pressure vessel; 5. Controller; 6. Column; 7. Crossbeam; 8. Hydraulic cylinder; 9. Lifting plate; 10. Sealing cover; 11. High-pressure pump; 12. No. 1 high-pressure pipe; 13. No. 2 high-pressure pipe; 14. Low-pressure pump; 15. No. 1 low-pressure pipe; 16. No. 2 low-pressure pipe; 17. U-hook; 18. Clip; 19. Slot; 20. Spring; 21. Telescopic rod; 22. Lifting block; 23. Insert block; 24. Reinforcing plate; 25. Adjustable foot. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention discloses a supercritical carbon dioxide treatment device for UV-resistant flax, comprising a support frame 1, a gas storage tank 3, a pressure vessel 4, and a controller 5. The gas storage tank 3 and the pressure vessel 4 are located at the bottom of the inner part of the support frame 1, and the controller 5 is installed at the front end of the pressure vessel 4. The device also includes a sealing cap assembly, a hanging assembly, and a dual-pump assembly. The sealing cap assembly is located at the top of the support frame 1 and is used to seal the top of the pressure vessel 4. The hanging assembly is located at the bottom of the sealing cap assembly and is used to hang flax fibers. The dual-pump assembly is located at the bottom of the inner part of the support frame 1 and is used to transfer carbon dioxide between the gas storage tank 3 and the pressure vessel 4. Both the dual-pump assembly and the sealing cap assembly are electrically connected to the controller 5.

[0023] like Figure 1 ,and Figure 2 As shown, the sealing cover assembly includes a column 6, a crossbeam 7, a hydraulic cylinder 8, a lifting plate 9, and a sealing cover 10. The top of the support frame 1 is provided with columns 6 on the front and rear sides respectively. The top of both sets of columns 6 are connected to the bottom of the crossbeam 7. The top of the crossbeam 7 is provided with a hydraulic cylinder 8. The bottom moving end of the hydraulic cylinder 8 extends to the bottom of the crossbeam 7 and is connected to the top of the lifting plate 9. The bottom of the lifting plate 9 is provided with a sealing cover 10. The bottom of the sealing cover 10 is provided with a hanging assembly.

[0024] like Figure 2 and Figure 3 As shown, the dual-pump assembly includes a high-pressure pump 11, a first high-pressure pipe 12, a second high-pressure pipe 13, a low-pressure pump 14, a first low-pressure pipe 15, and a second low-pressure pipe 16. The high-pressure pump 11 and the low-pressure pump 14 are respectively installed at the bottom of the inner side of the support frame 1. The input end of the high-pressure pump 11 is connected to the output end of the first high-pressure pipe 12, and the input end of the first high-pressure pipe 12 is connected to the front output end of the gas storage tank 3. The output end of the high-pressure pump 11 is connected to the input end of the second high-pressure pipe 13, and the output end of the second high-pressure pipe 13 is connected to the front right side of the pressure vessel 4. The input end of the low-pressure pump 14 is connected to the output end of the first low-pressure pipe 15, and the input end of the first low-pressure pipe 15 is connected to the rear right side of the pressure vessel 4. The output end of the low-pressure pump 14 is connected to the input end of the second low-pressure pipe 16, and the output end of the second low-pressure pipe 16 is connected to the outer input end of the gas storage tank 3. Both the high-pressure pump 11 and the low-pressure pump 14 are electrically connected to the controller 5.

[0025] In this embodiment, after the hanging assembly clamps the flax fiber, it is placed below the sealing cover 10. The hydraulic cylinder 8 is extended, causing the lifting plate 9 to move the sealing cover 10 downwards. After the hanging assembly and flax fiber enter the pressure vessel 4, the sealing cover 10 seals the top of the pressure vessel 4. During use, the high-pressure pump 11 is started and the low-pressure pump 14 is turned off, allowing carbon dioxide from the gas storage tank 3 to enter the pressure vessel 4 through the first high-pressure pipe 12 and the second high-pressure pipe 13. The high-pressure pump 11 pressurizes the carbon dioxide, and in conjunction with the heating system of the pressure vessel 4, the carbon dioxide inside the pressure vessel 4 is kept at a superheated temperature. In the critical state, carbon dioxide is in a supercritical state inside pressure vessel 4, thus permeating into the flax fiber, allowing the flax fiber to better absorb the UV protectant. After processing, low-pressure pump 14 is started and high-pressure pump 11 is turned off. The cooling system is started to cool the carbon dioxide inside pressure vessel 4 to form liquid carbon dioxide. Low-pressure pump 14 transports the low-pressure liquid carbon dioxide inside pressure vessel 4 through low-pressure pipe 15 and low-pressure pipe 16 to the gas storage tank 3 for storage, realizing the repeated use of carbon dioxide. The hydraulic cylinder 8 is shortened, thereby automatically removing the flax fiber from pressure vessel 4. Example 2

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, the present invention discloses a supercritical carbon dioxide treatment device for UV-resistant flax, comprising a support frame 1, a gas storage tank 3, a pressure vessel 4, and a controller 5. The gas storage tank 3 and the pressure vessel 4 are located at the bottom of the inner part of the support frame 1, and the controller 5 is installed at the front end of the pressure vessel 4. The device also includes a sealing cap assembly, a hanging assembly, and a dual-pump assembly. The sealing cap assembly is located at the top of the support frame 1 and is used to seal the top of the pressure vessel 4. The hanging assembly is located at the bottom of the sealing cap assembly and is used to hang flax fibers. The dual-pump assembly is located at the bottom of the inner part of the support frame 1 and is used to transfer carbon dioxide between the gas storage tank 3 and the pressure vessel 4. Both the dual-pump assembly and the sealing cap assembly are electrically connected to the controller 5.

[0027] like Figure 1 ,and Figure 2 As shown, the sealing cover assembly includes a column 6, a crossbeam 7, a hydraulic cylinder 8, a lifting plate 9, and a sealing cover 10. The top of the support frame 1 is provided with columns 6 on the front and rear sides respectively. The top of both sets of columns 6 are connected to the bottom of the crossbeam 7. The top of the crossbeam 7 is provided with a hydraulic cylinder 8. The bottom moving end of the hydraulic cylinder 8 extends to the bottom of the crossbeam 7 and is connected to the top of the lifting plate 9. The bottom of the lifting plate 9 is provided with a sealing cover 10. The bottom of the sealing cover 10 is provided with a hanging assembly.

[0028] like Figure 2 and Figure 3As shown, the dual-pump assembly includes a high-pressure pump 11, a first high-pressure pipe 12, a second high-pressure pipe 13, a low-pressure pump 14, a first low-pressure pipe 15, and a second low-pressure pipe 16. The high-pressure pump 11 and the low-pressure pump 14 are respectively installed at the bottom of the inner side of the support frame 1. The input end of the high-pressure pump 11 is connected to the output end of the first high-pressure pipe 12, and the input end of the first high-pressure pipe 12 is connected to the front output end of the gas storage tank 3. The output end of the high-pressure pump 11 is connected to the input end of the second high-pressure pipe 13, and the output end of the second high-pressure pipe 13 is connected to the front right side of the pressure vessel 4. The input end of the low-pressure pump 14 is connected to the output end of the first low-pressure pipe 15, and the input end of the first low-pressure pipe 15 is connected to the rear right side of the pressure vessel 4. The output end of the low-pressure pump 14 is connected to the input end of the second low-pressure pipe 16, and the output end of the second low-pressure pipe 16 is connected to the outer input end of the gas storage tank 3. Both the high-pressure pump 11 and the low-pressure pump 14 are electrically connected to the controller 5.

[0029] like Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, the mounting assembly includes a U-shaped hook 17, a clip 18, a slot 19, and an anti-detachment component. The first end of the U-shaped hook 17 is higher than the second end of the U-shaped hook 17. The first end of the U-shaped hook 17 is connected to the bottom end of the sealing cover 10. The second end of the U-shaped hook 17 is provided with a slot 19. The clip 18 is provided with a round hole. The U-shaped hook 17 passes through the round hole to mount the clip 18. The bottom end of the sealing cover 10 is provided with an anti-detachment component. The anti-detachment component cooperates with the slot 19 to form a seal with the U-shaped hook 17.

[0030] like Figure 5 and Figure 6 As shown, the anti-detachment component includes a spring 20, a telescopic rod 21, a lifting block 22, and an insert block 23. The bottom end of the sealing cover 10 is provided with a spring 20 and a telescopic rod 21. The spring 20 is fitted on the outside of the telescopic rod 21. The bottom ends of the spring 20 and the telescopic rod 21 are both connected to the top end of the lifting block 22. The bottom end of the lifting block 22 is provided with an insert block 23, which is adapted to the slot 19.

[0031] like Figure 1 As shown, it also includes reinforcing plates 24 and adjustable feet 25. Multiple sets of reinforcing plates 24 are provided between the support frame 1 and the gas storage tank 3, and multiple sets of adjustable feet 25 are provided at the bottom of the support frame 1.

[0032] In this embodiment, after the clip 18 clamps the flax fiber coated with UV-resistant agent, the lifting block 22 is raised, thereby moving the insert block 23 away from the slot 19. When the clip 18 is hooked onto the U-shaped hook 17, the lifting block 22 is released, causing the lifting block 22 to move the insert block 23 downward under the action of the spring 20. The insert block 23 is inserted into the slot 19, preventing the clip 18 from detaching from the U-shaped hook 17. The hydraulic cylinder 8 is extended, causing the lifting plate 9 to move the sealing cover 10 downward. After the hanging assembly and flax fiber enter the pressure vessel 4, the sealing cover 10 seals the top of the pressure vessel 4. In use, the high-pressure pump 11 is started and the low-pressure pump 14 is turned off, allowing carbon dioxide inside the gas storage tank 3 to enter through the first high-pressure pipe 12 and the second high-pressure pipe 13. Pressure vessel 4 and high-pressure pump 11 pressurize carbon dioxide. Combined with the heating system of pressure vessel 4, the carbon dioxide inside pressure vessel 4 is in a supercritical state. The carbon dioxide in the supercritical state inside pressure vessel 4 permeates into the flax fiber, allowing the flax fiber to better absorb the UV protectant. After processing, low-pressure pump 14 is started and high-pressure pump 11 is turned off. The cooling system is started to cool the carbon dioxide inside pressure vessel 4 to form liquid carbon dioxide. Low-pressure pump 14 transports the low-pressure liquid carbon dioxide inside pressure vessel 4 through low-pressure pipe 15 and low-pressure pipe 16 to the gas storage tank 3 for storage, realizing the repeated use of carbon dioxide. The hydraulic cylinder 8 is shortened, so that the flax fiber is automatically removed from pressure vessel 4.

[0033] This invention relates to a supercritical carbon dioxide treatment device for UV-resistant flax. The pressure vessel 4 is internally equipped with a heating system and a cooling system, both of which are electrically connected to a controller 5. The gas storage tank 3, pressure vessel 4, controller 5, high-pressure pump 11, and low-pressure pump 14 of this supercritical carbon dioxide treatment device for UV-resistant flax are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A supercritical carbon dioxide treatment equipment for anti-ultraviolet flax, comprising a support frame (1), a gas storage tank (3), a pressure container (4) and a controller (5), the inside bottom end of the support frame (1) is provided with the gas storage tank (3) and the pressure container (4), and the front end of the pressure container (4) is installed with the controller (5), characterized in that, The sealed cover assembly, the hanging assembly and the double pump assembly are arranged at the top end of the support frame (1), the sealed cover assembly is used for sealing the top end of the pressure container (4), the hanging assembly is arranged at the bottom end of the sealed cover assembly and used for hanging the flax fibers, the double pump assembly is arranged at the bottom end of the support frame (1) and used for transferring the carbon dioxide between the gas storage tank (3) and the pressure container (4), and the double pump assembly and the sealed cover assembly are electrically connected with the controller (5).

2. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as claimed in claim 1, characterized in that, The sealed cover assembly comprises the vertical columns (6), the cross beams (7), the hydraulic cylinders (8), the lifting plates (9) and the sealed covers (10), the vertical columns (6) are arranged at the front and rear sides of the top end of the support frame (1), the top ends of the two groups of vertical columns (6) are connected with the bottom ends of the cross beams (7), the cross beams (7) are provided with the hydraulic cylinders (8) at the top ends, the bottom moving ends of the hydraulic cylinders (8) extend to below the cross beams (7) and are connected with the top ends of the lifting plates (9), the bottom ends of the lifting plates (9) are provided with the sealed covers (10), and the bottom ends of the sealed covers (10) are provided with the hanging assemblies.

3. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as defined in claim 1, wherein The double pump assembly comprises the high-pressure pump (11), the first high-pressure pipe (12), the second high-pressure pipe (13), the low-pressure pump (14), the first low-pressure pipe (15) and the second low-pressure pipe (16), the high-pressure pump (11) and the low-pressure pump (14) are arranged at the bottom end of the support frame (1), the input end of the high-pressure pump (11) is communicated with the output end of the first high-pressure pipe (12), the input end of the first high-pressure pipe (12) is communicated with the front output end of the gas storage tank (3), the output end of the high-pressure pump (11) is communicated with the input end of the second high-pressure pipe (13), the output end of the second high-pressure pipe (13) is communicated with the right end of the front side of the pressure container (4), the input end of the low-pressure pump (14) is communicated with the output end of the first low-pressure pipe (15), the input end of the first low-pressure pipe (15) is communicated with the right end of the rear side of the pressure container (4), the output end of the low-pressure pump (14) is communicated with the input end of the second low-pressure pipe (16), and the output end of the second low-pressure pipe (16) is communicated with the input end of the outer side of the gas storage tank (3), and the high-pressure pump (11) and the low-pressure pump (14) are electrically connected with the controller (5).

4. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as defined in claim 2, wherein The hanging assembly comprises the U-shaped hooks (17), the clamps (18), the insertion grooves (19) and the anti-dropping assemblies, the first end of the U-shaped hook (17) is higher than the second end of the U-shaped hook (17), the first end of the U-shaped hook (17) is connected with the bottom end of the sealed cover (10), the second end of the U-shaped hook (17) is provided with the insertion groove (19), the clamps (18) are provided with the round holes, the U-shaped hook (17) passes through the round holes to hang the clamps (18), the bottom end of the sealed cover (10) is provided with the anti-dropping assemblies, the anti-dropping assemblies are matched with the insertion grooves (19) and form the seal with the U-shaped hook (17).

5. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as defined in claim 4, characterized in that, The anti-falling assembly comprises a spring (20), an extension rod (21), a lifting block (22) and an insertion block (23), the bottom end of the sealing cover (10) is provided with the spring (20) and the extension rod (21), the spring (20) is sleeved outside the extension rod (21), the bottom end of the spring (20) and the extension rod (21) is connected with the top end of the lifting block (22), and the bottom end of the lifting block (22) is provided with the insertion block (23), which is matched with the insertion groove (19).

6. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as defined in claim 1, wherein, The support frame (1) and the gas storage tank (3) are provided with a plurality of groups of reinforcing plates (24).

7. A supercritical carbon dioxide treatment apparatus for ultraviolet resistant flax as defined in claim 1, wherein The bottom end of the support frame (1) is provided with a plurality of groups of adjustable feet (25).

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