A linen fiber pickling device and a pickling method thereof

Abstract

The application discloses a flax fiber pickling device and a pickling method thereof, belonging to the technical field of pickling devices, which comprises a pickling tank and a fixing plate, the fixing plate is arranged above the pickling tank, an adding pipe is communicated with the surface of the pickling tank, a discharge door is arranged on the surface of the pickling tank, a dropping basket is arranged in the pickling tank, and a dropping mechanism is arranged on the surface of the pickling tank. In the process of pickling flax fibers, the pressing block and the dropping basket can drive the flax fibers to immerse in the pickling liquid, so that the manual work is reduced, the flax fibers are placed in the pickling tank by artificial and pressed by a weight, and in the process that the flax fibers moved out of the pickling tank after being driven by the dropping basket, the flax fibers are extruded by the pressing block, so that the pickling liquid absorbed in the flax fibers is squeezed out, thereby avoiding that the pickling liquid absorbed in the flax fibers drops in the subsequent process of transferring the flax fibers, and other equipment is corroded.

Description

Technical Field

[0001] This invention relates to the field of pickling equipment technology, specifically to a flax fiber pickling device and its pickling method. Background Technology

[0002] Flax is one of the earliest natural fibers used by mankind, with a history of over 10,000 years. Flax fiber is a rare natural fiber, accounting for only 1.5% of the total natural fiber. Due to its naturalness, simplicity, rarity, natural color, and nobility, it is known as the "Queen of Fibers". Flax fiber is the oldest textile fiber in the world. Flax fiber fabrics have a wide range of uses, including clothing fabrics, decorative fabrics, tablecloths, bedding, and automotive supplies. With the emergence of new varieties, new technologies, new spinning methods, new weaving methods, and new finishing processes, the flax products industry is developing better and better.

[0003] In the current process of acid washing flax fibers, the bundled flax fibers are usually manually placed into the acid washing tank, and heavy blocks are used to hold the flax bundles down. The entire process of acid washing flax fibers is labor-intensive and inefficient. Moreover, when the acid-washed flax fibers are taken out, the flax fibers will have absorbed a lot of acid. During the transfer of flax fibers, the dripping acid will corrode the instruments that come into contact with them, affecting the service life of the instruments. Summary of the Invention

[0004] The purpose of this invention is to provide a flax fiber acid washing apparatus and a flax fiber acid washing method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flax fiber pickling device, comprising a pickling tank and a fixing plate, the fixing plate being disposed above the pickling tank, an adding pipe being connected to the surface of the pickling tank, a discharge door being provided on the surface of the pickling tank, a feeding basket being disposed inside the pickling tank, a feeding mechanism being provided on the surface of the pickling tank, the feeding mechanism being used to move the feeding basket up and down to feed the flax fibers in the feeding basket into the pickling tank, the feeding basket being located inside the feeding port, a pressing mechanism being provided between the pickling tank and the fixing plate, the pressing mechanism being used to press down on the flax fibers in the feeding basket, a squeezing mechanism being provided on the surface of the fixing plate, the squeezing mechanism being used to squeeze the flax fibers in the feeding basket when the feeding basket moves upward with the flax fibers, a limiting mechanism being provided on the surface of the fixing plate, the limiting mechanism being used to limit the pressing mechanism after the flax fibers in the feeding basket are squeezed, and a releasing mechanism being provided on the surface of the fixing plate, the releasing mechanism being used to release the limiting mechanism when new flax fibers are added to the feeding basket and it moves upward.

[0006] As a further embodiment of the present invention, the dispensing mechanism includes a shielding cover, which is fixedly installed on the upper end of the pickling tank. The surface of the shielding cover has a dispensing port, and two driving cylinders are fixedly installed on the surface of the shielding cover. The two driving cylinders are respectively located on both sides of the dispensing port, and the extension and retraction ends of the driving cylinders are connected to the surface of the dispensing basket.

[0007] As a further embodiment of the present invention, the pressing mechanism includes a pressing block located inside the delivery basket, and the pressing block is made of plastic.

[0008] As a further embodiment of the present invention, the extrusion mechanism includes a through-hole, which is formed on the surface of the fixed plate and located above the dispensing port. Parallel mounting plates are fixedly connected to the surface of the fixed plate, and an extrusion plate is elastically slidably connected between the two mounting plates. The extrusion plate is located above the through-hole, and first racks are fixedly connected to both the left and right surfaces of the extrusion plate. A rotating rod is rotatably connected between the two mounting plates, and a gear is fixedly connected to the surface of the rotating rod. The gear meshes with the first rack. A first through-hole is formed on the surface of the fixed plate, which penetrates the fixed plate. A second rack is slidably connected within the first through-hole, extending below the fixed plate. The second rack meshes with the gear on the side away from the first rack, and the bottom of the second rack is located at the edge of the dispensing basket.

[0009] As a further embodiment of the present invention, the limiting mechanism includes two slots, which are respectively opened on the left and right sides of the pressure block. The bottom of the slot is inclined. A sliding groove is opened on the surface of the fixing plate. The sliding groove communicates with the through opening. A limiting block is provided in the sliding groove. The limiting block extends into the through opening. The bottom of the limiting block at one end in the through opening is inclined. A compression spring is fixedly connected to the surface of the limiting block.

[0010] As a further embodiment of the present invention, the release mechanism includes a release groove, which is formed on the surface of the pressure block and communicates with the slot. The upper side of the release groove penetrates the pressure block, and the depth of the release groove is greater than the depth of the slot. An L-shaped pull plate is slidably connected to the surface of the limiting block. A second opening is formed on the surface of the fixing plate, which penetrates the fixing plate. The pull plate passes through the second opening and slides elastically within the second opening. The end of the pull plate away from the limiting block is inclined. A deflector plate is fixedly connected to the surface of the delivery basket. The end of the deflector plate is inclined, and the deflector plate is located below the pull plate.

[0011] As a further embodiment of the present invention, a plurality of rotating shafts are rotatably connected to the bottom of the inner wall of the pickling tank. The rotating shafts have spiral guide grooves on their surfaces. Fixed cylinders are fitted onto the rotating shaft surfaces and slide within the guide grooves. Agitator blades are fixedly connected to the surface of the fixed cylinders. A connecting plate is rotatably connected to the surfaces of the plurality of fixed cylinders. The connecting plate passes under the feeding basket. A support spring is connected between the bottom of the connecting plate and the bottom of the inner wall of the pickling tank.

[0012] As a further embodiment of the present invention, the surface of the feeding basket is hinged with a discharge gate.

[0013] As a further embodiment of the present invention, a cleaning brush is fixedly connected to the bottom surface of the shielding cover, and the cleaning brush is located around the dispensing port.

[0014] A method for acid washing flax fibers, the specific steps of which are as follows:

[0015] Step 1: During the acid washing process of flax fibers, the flax fibers need to be placed in the feeding basket first;

[0016] Step 2: The dispensing mechanism will then move the dispensing basket into the pickling tank;

[0017] Step 3: The pressing mechanism will press the flax fibers in the feeding basket downwards, causing the flax fibers to be submerged in the pickling solution;

[0018] Step 4: After the flax fibers have been pickled, the feeding mechanism will move the feeding basket upwards, and the squeezing mechanism will squeeze the flax fibers inside the feeding basket by pressing down the mechanism.

[0019] Step 5: When the delivery basket moves upward to the top, the limiting mechanism will limit the pressing mechanism, and the pressing mechanism will disengage from the delivery basket to replace the flax fibers inside the delivery basket.

[0020] Step Six: The feeding basket then moves upward, and the release mechanism will activate the limit mechanism to release the limit on the pressing mechanism. The pressing mechanism will then press down on the flax fibers in the feeding basket again.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In the process of pickling flax fibers, the present invention utilizes a pressing block and a feeding basket to immerse the flax fibers in the pickling solution, eliminating the need for manual entry into the pickling tank to place the flax fibers and weigh them down with heavy objects, thus reducing manual labor. Furthermore, during the process of removing the pickled flax fibers from the pickling tank using the feeding basket, the pressing block squeezes the flax fibers, causing the pickling solution absorbed by the flax fibers to be squeezed out. This prevents the pickling solution absorbed by the flax fibers from dripping and corroding other equipment during subsequent transfer of the flax fibers.

[0023] 2. During the process of the feeding basket moving into the pickling tank, the downward movement of the feeding basket will cause the connecting plate and the fixed cylinder to move downward together. The fixed cylinder will move downward along the rotation axis and will drive the stirring fan blade to rotate under the action of the guide groove. The stirring fan blade will agitate the pickling liquid in the pickling tank, which is beneficial to ensure that the pickling liquid in the pickling tank can be mixed evenly during the process of the feeding basket moving into the pickling tank, thereby ensuring the pickling effect of the pickling liquid on the flax fiber.

[0024] 3. In the process of pickling flax fibers, the feeding basket carries the flax fibers out of the pickling tank and is then squeezed by the press block to expel the absorbed acid. After being squeezed, the flax fibers are in a compressed state, and then the discharge door can be opened to make it easier to remove the flax fibers, reducing the removal time. Attached Figure Description

[0025] Figure 1 This is a flowchart of the method of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the overall cross-section of the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle;

[0029] Figure 5 for Figure 3 Schematic diagram of the structure at point B;

[0030] Figure 6 This is a schematic diagram of the structure of the pickling tank after it has been cut open in this invention;

[0031] Figure 7 This is a structural diagram showing the positional relationship between the fixing plate, the pressure block, and the extrusion plate in this invention;

[0032] Figure 8 for Figure 7 Schematic diagram of the structure at point C;

[0033] Figure 9This is a schematic diagram of the pressure block in the present invention;

[0034] Figure 10 This is a schematic diagram showing the positional relationship between the fixed plate, the pulling plate, and the actuating plate in this invention;

[0035] Figure 11 for Figure 10 Schematic diagram of the structure at point D;

[0036] Figure 12 This is a schematic diagram of the structure of the delivery basket in this invention.

[0037] The attached diagram lists the components represented by each number as follows:

[0038] Pickling tank 1, fixing plate 2, adding pipe 3, discharge door 4, feeding basket 5, shielding cover 6, feeding port 7, driving cylinder 8, pressing block 9, through port 10, mounting plate 11, squeezing plate 12, first rack 13, rotating rod 1301, gear 14, first through port 15, second rack 16, slot 17, sliding groove 18, limiting block 19, squeezing spring 20, release groove 21, pulling plate 22, second through port 23, actuating plate 24, rotating shaft 25, guide groove 26, fixing cylinder 27, stirring fan blade 28, connecting plate 29, support spring 30, discharge door 31, cleaning brush 32. Detailed Implementation

[0039] Please see Figures 1-12 This invention provides a technical solution: a flax fiber pickling device, including a pickling tank 1 and a fixing plate 2. The fixing plate 2 is disposed above the pickling tank 1. An adding pipe 3 is connected to the surface of the pickling tank 1. A discharge door 4 is provided on the surface of the pickling tank 1. A feeding basket 5 is provided inside the pickling tank 1. A feeding mechanism is provided on the surface of the pickling tank 1. The feeding mechanism is used to move the feeding basket 5 up and down to feed the flax fiber in the feeding basket 5 into the pickling tank 1. The feeding basket 5 is located in the feeding port 7. A pressing mechanism is provided between the pickling tank 1 and the fixing plate 2. The pressing mechanism is used to press down the flax fiber in the feeding basket 5. A squeezing mechanism is provided on the surface of the fixing plate 2. The squeezing mechanism is used to squeeze the flax fiber in the feeding basket 5 when the feeding basket 5 moves upward with the pressing mechanism. A limiting mechanism is provided on the surface of the fixing plate 2. The limiting mechanism is used to limit the pressing mechanism after the flax fiber in the feeding basket 5 is squeezed. A releasing mechanism is provided on the surface of the fixing plate 2. The releasing mechanism is used to release the limiting mechanism when the feeding basket 5 moves upward after adding new flax fiber.

[0040] The dispensing mechanism includes a cover 6, which is fixedly installed on the upper end of the pickling tank 1. The surface of the cover 6 has a dispensing port 7. Two drive cylinders 8 are fixedly installed on the surface of the cover 6. The two drive cylinders 8 are located on both sides of the dispensing port 7. The telescopic ends of the drive cylinders 8 are connected to the surface of the dispensing basket 5.

[0041] The pressing mechanism includes a pressing block 9, which is located inside the feeding basket 5 and is made of plastic.

[0042] The extrusion mechanism includes a through-hole 10, which is opened on the surface of the fixed plate 2 and is located above the feeding port 7. Parallel mounting plates 11 are fixedly connected to the surface of the fixed plate 2. An extrusion plate 12 is elastically slidably connected between the two mounting plates 11 and is located above the through-hole 10. First racks 13 are fixedly connected to both the left and right sides of the extrusion plate 12. A rotating rod 1301 is rotatably connected between the two mounting plates 11. A gear 14 is fixedly connected to the surface of the rotating rod 1301 and meshes with the first rack 13. A first through-hole 15 is opened on the surface of the fixed plate 2 and penetrates the fixed plate 2. A second rack 16 is slidably connected inside the first through-hole 15 and extends to the bottom of the fixed plate 2. The second rack 16 meshes with the gear 14 on the side away from the first rack 13, and the bottom of the second rack 16 is located at the edge of the feeding basket 5.

[0043] The limiting mechanism includes two slots 17, which are respectively opened on the left and right sides of the pressure block 9. The bottom of the slot 17 is inclined. The surface of the fixing plate 2 is provided with a sliding groove 18, which is connected to the through opening 10. A limiting block 19 is provided in the sliding groove 18, which extends into the through opening 10. The bottom of the limiting block 19 located in the through opening 10 is inclined. A compression spring 20 is fixedly connected to the surface of the limiting block 19.

[0044] The release mechanism includes a release groove 21, which is formed on the surface of the pressure block 9 and communicates with the slot 17. The upper side of the release groove 21 penetrates the pressure block 9, and the depth of the release groove 21 is greater than the depth of the slot 17. An L-shaped pull plate 22 is slidably connected to the surface of the limiting block 19. A second opening 23 is formed on the surface of the fixed plate 2, which penetrates the fixed plate 2. The pull plate 22 passes through the second opening 23 and slides elastically within the second opening 23. The end of the pull plate 22 away from the limiting block 19 is inclined. A deflector plate 24 is fixedly connected to the surface of the delivery basket 5. The end of the deflector plate 24 is inclined, and the deflector plate 24 is located below the pull plate 22.

[0045] During the pickling process of flax fibers, the flax fibers need to be placed in the feeding basket 5. The pressing block 9 is positioned within the through-hole 10 under the action of the limiting block 19. Then, when the driving cylinder 8 moves the feeding basket 5 upward, the pressing block 9 enters the feeding basket 5, and the feeding basket 5 disengages from the limiting block 19 under the action of the pressing block 9. Then, the driving cylinder 8 moves the feeding basket 5 through the feeding port 7 into the pickling tank 1. The pickling solution in the pickling tank 1 gradually submerges the flax fibers in the feeding basket 5. The pressing block 9 can press down the relatively loose flax fibers in the feeding basket 5 to a certain extent, so that the pickling solution in the pickling tank 1 can submerge the flax fibers. Moreover, the weight of the pressing block 9 will not excessively compress the flax fibers, ensuring the pickling effect of the flax fibers. After the flax fibers have been pickled, the telescopic cylinder will cause the feeding basket 5 and the pressing block 9 to move upward together. Then, the feeding basket 5 will move to the position of the second rack 16 and push the second rack 16 upward. The upward movement of the second rack 16 will drive the gear 14 to rotate, and the gear 14 will drive the first rack 13 and the extrusion plate 12 to move downward. Then, the upper end of the pressing block 9 will pass through the through hole 10. The limiting block 19 will move into the slide groove 18 under the pressure of the pressing block 9. The limiting block 19 will first move into the slot 17 and then pass over the slot 17. When the pressing block 9 contacts the extrusion plate 12, the extrusion plate 12 will use the pressing block 9 to squeeze the flax fibers in the feeding basket 5, squeezing out the pickling liquid absorbed inside the flax fibers and reducing the amount of pickling liquid absorbed inside the flax fibers. To prevent the pickling solution absorbed by the flax fibers from dripping during subsequent transfer, which would contaminate the working environment in the production and processing area and corrode other instruments, thus affecting their normal use, the following steps are taken: After the flax fibers in the feeding basket 5 are squeezed, the drive cylinder 8 moves the feeding basket 5 downwards, and the pressure block 9 moves downwards under gravity. The limit block 19 moves into the slot 17 to limit the pressure block 9, causing it to disengage from the feeding basket 5. The flax fibers in the feeding basket 5 are then removed and replaced. The drive cylinder 8 then moves the feeding basket 5 upwards. When the feeding basket 5 reaches the position of the pull plate 22, the actuating plate 24 moves the pull plate 22 within the second opening 23. Pulling plate 22 will cause limiting block 19 to move together. Limiting block 19 will move into release groove 21 to release the restriction on pressing block 9. Then, the feeding basket 5 moves downward, and limiting block 19 will move upward along release groove 21. Pressing block 9 will move back into feeding basket 5 to press down the flax fibers in feeding basket 5, thereby ensuring the pickling of flax fibers. This invention uses pressing block 9 and feeding basket 5 to drive flax fibers into the pickling solution, eliminating the need for manual entry into pickling tank 1 to place flax fibers and press them down with weights, reducing manual workload. Furthermore, during the process of feeding basket 5 driving flax fibers out of pickling tank 1 after pickling, pressing block 9 squeezes the flax fibers, which can squeeze out the pickling solution absorbed by the flax fibers.This prevents the acid pickling solution absorbed by the flax fibers from dripping and corroding other instruments during subsequent transfer processes.

[0046] During the pickling process of flax fibers, the pickling solution in the pickling tank 1 will settle at the bottom of the pickling tank 1. When the feeding basket 5 moves into the pickling tank 1, the pickling solution cannot be mixed evenly. As a further embodiment of the present invention, multiple rotating shafts 25 are rotatably connected to the bottom of the inner wall of the pickling tank 1. The rotating shafts 25 have spiral guide grooves 26 on their surfaces. Fixed cylinders 27 are sleeved on the surface of the rotating shafts 25. The fixed cylinders 27 slide in the guide grooves 26. Agitating fan blades 28 are fixedly connected to the surface of the fixed cylinders 27. A connecting plate 29 is rotatably connected to the surface of multiple fixed cylinders 27. The connecting plate 29 passes under the feeding basket 5. A supporting spring 30 is connected between the bottom of the connecting plate 29 and the bottom of the inner wall of the pickling tank 1.

[0047] As the feeding basket 5 moves into the pickling tank 1, the downward movement of the feeding basket 5 will cause the connecting plate 29 and the fixed cylinder 27 to move downward together. The fixed cylinder 27 will move downward along the rotating shaft 25 and will drive the stirring fan blade 28 to rotate under the action of the guide groove 26. The stirring fan blade 28 will agitate the pickling liquid in the pickling tank 1, which is beneficial to ensure that the pickling liquid in the pickling tank 1 is mixed evenly during the process of the feeding basket 5 moving into the pickling tank 1, thereby ensuring the pickling effect of the pickling liquid on the flax fiber.

[0048] During the pickling process of flax fibers, the pickled flax fibers will be squeezed by the pressing block 9 and stick to the bottom of the feeding basket 5, making them difficult to remove. As a further solution of the present invention, the feeding basket 5 is hinged with a discharge door 31.

[0049] During the pickling process of flax fibers, after the feeding basket 5 carries the flax fibers out of the pickling tank 1, they are squeezed out of the absorbed acid by the pressing block 9. After being squeezed, the flax fibers are in a compressed state, and then the flax fibers can be more easily removed by opening the discharge door 31, reducing the removal time.

[0050] During the pickling process of flax fibers, pickling liquid will adhere to the surface of the feeding basket 5. When the feeding basket 5 is moved upward out of the feeding port 7, the pickling liquid on the surface will drip onto the surface of the cover 6. As a further embodiment of the present invention, a cleaning brush 32 is fixedly connected to the bottom surface of the cover 6, and the cleaning brush 32 is located around the feeding port 7.

[0051] During the pickling process of flax fibers, when the feeding basket 5 moves upward through the feeding port 7, the cleaning brush 32 will clean the pickling liquid adhering to the surface of the feeding basket 5 around the perimeter, reducing the amount of pickling liquid adhering to the surface of the feeding basket 5 when it moves above the cover, and preventing the pickling liquid from being carried to the surface of the cover 6 when the feeding basket 5 moves upward.

[0052] A method for acid washing flax fibers, the specific steps of which are as follows:

[0053] Step 1: During the acid washing process of flax fibers, the flax fibers need to be placed in the feeding basket 5 first;

[0054] Step 2: The delivery mechanism will then move the delivery basket 5 into the pickling tank 1;

[0055] Step 3: The pressing mechanism will press the flax fibers in the feeding basket 5 downwards, causing the flax fibers to be submerged in the pickling solution;

[0056] Step 4: After the flax fiber pickling is completed, the feeding mechanism will move the feeding basket 5 upward, and the squeezing mechanism will squeeze the flax fiber inside the feeding basket 5 by pressing down the mechanism.

[0057] Step 5: When the feeding basket 5 moves upward to the top, the limiting mechanism will limit the pressing mechanism, and the pressing mechanism will disengage from the feeding basket 5, replacing the flax fibers inside the feeding basket 5.

[0058] Step Six: Then, the feeding basket 5 moves upward, and the release mechanism will activate the limit mechanism to release the limit on the pressing mechanism. The pressing mechanism will then press down on the flax fibers in the feeding basket 5 again.

Claims

1. A pickling device for flax fibers, comprising a pickling tank (1) and a fixed plate (2), characterized in that: The fixed plate (2) is arranged above the pickling tank (1), the surface of the pickling tank (1) is communicated with the adding pipe (3), the surface of the pickling tank (1) is provided with the discharge door (4), the inside of the pickling tank (1) is provided with the putting basket (5), the surface of the pickling tank (1) is provided with the putting mechanism, the putting mechanism is used for moving the putting basket (5) up and down to put the flax fiber in the putting basket (5) into the pickling tank (1), the putting basket (5) is located in the putting port (7), the lower pressing mechanism is arranged between the pickling tank (1) and the fixed plate (2), the lower pressing mechanism is used for pressing the flax fiber in the putting basket (5), the surface of the fixed plate (2) is provided with the extrusion mechanism, the extrusion mechanism is used for extruding the flax fiber in the putting basket (5) when the putting basket (5) drives the flax fiber to move upwards, the surface of the fixed plate (2) is provided with the limiting mechanism, the limiting mechanism is used for limiting the lower pressing mechanism after the flax fiber in the putting basket (5) is extruded, the surface of the fixed plate (2) is provided with the release mechanism, the release mechanism is used for releasing the limiting of the limiting mechanism when the putting basket (5) moves upwards after adding new flax fiber in the putting basket (5); The putting mechanism comprises a shielding cover (6), the shielding cover (6) is fixedly installed on the upper end of the pickling tank (1), the surface of the shielding cover (6) is provided with the putting port (7), and the surface of the shielding cover (6) is fixedly installed with two drive air cylinders (8); the two drive air cylinders (8) are located on the two sides of the putting port (7) respectively, and the telescopic end of the drive air cylinder (8) is connected with the surface of the putting basket (5); The lower pressing mechanism comprises a pressing block (9), the pressing block (9) is located in the putting basket (5), and the pressing block (9) is made of plastic material; The extrusion mechanism comprises a through hole (10), the through hole (10) is arranged on the surface of the fixed plate (2), the through hole (10) is located above the putting port (7), the surface of the fixed plate (2) is fixedly connected with two parallel installation plates (11), the extrusion plate (12) is elastically and slidably connected between the two installation plates (11), the extrusion plate (12) is located above the through hole (10), the first gear rack (13) is fixedly connected to the left and right surfaces of the extrusion plate (12), the rotating rod (1301) is rotatably connected between the two installation plates (11), the surface of the rotating rod (1301) is fixedly connected with a gear (14), the gear (14) is engaged with the first gear rack (13), the first through hole (15) is arranged on the surface of the fixed plate (2), the first through hole (15) penetrates the fixed plate (2), the second gear rack (16) is slidably connected in the first through hole (15), the second gear rack (16) extends below the fixed plate (2), the second gear rack (16) is engaged with the gear (14) on the side away from the first gear rack (13), and the bottom of the second gear rack (16) is located at the edge of the putting basket (5). The limiting mechanism includes two clamping grooves (17), the two clamping grooves (17) are respectively arranged on the left and right side surfaces of the pressing block (9), the bottom of the clamping groove (17) is a slope, the surface of the fixed plate (2) is provided with a sliding groove (18), the sliding groove (18) is communicated with the through hole (10), the sliding groove (18) is provided with a limiting block (19), the limiting block extends into the through hole (10), the bottom of the limiting block (19) is a slope, and the surface of the limiting block (19) is fixedly connected with an extrusion spring (20). The release mechanism includes a release groove (21), the release groove (21) is arranged on the surface of the pressing block (9), the release groove (21) is communicated with the clamping groove (17), the release groove (21) penetrates the pressing block (9) on the upper side, the depth of the release groove (21) is greater than that of the clamping groove (17), the surface of the limiting block (19) is slidably connected with an L-shaped pulling plate (22), the surface of the fixed plate (2) is provided with a second through hole (23), the second through hole (23) penetrates the fixed plate (2), the pulling plate (22) passes through the second through hole (23) and elastically slides in the second through hole (23), the end of the pulling plate (22) away from the limiting block (19) is a slope, the surface of the dropping basket (5) is fixedly connected with a pushing plate (24), the end of the pushing plate (24) is a slope, and the pushing plate (24) is located below the pulling plate (22).

2. A flax fibre pickling apparatus according to claim 1, characterised in that: The inner wall bottom of the pickling tank (1) is rotatably connected with a plurality of rotating shafts (25), the surface of the rotating shaft (25) is provided with a spiral guide groove (26), the surface of the rotating shaft (25) is sleeved with a fixed cylinder (27), the fixed cylinder (27) slides in the guide groove (26), the surface of the fixed cylinder (27) is fixedly connected with an agitating fan blade (28), the surfaces of a plurality of fixed cylinders (27) are commonly rotatably connected with a connecting plate (29), the connecting plate (29) passes below the dropping basket (5), and the bottom of the connecting plate (29) and the inner wall bottom of the pickling tank (1) are connected with a supporting spring (30).

3. A flax fibre pickling apparatus according to claim 1, characterised in that: The surface of the dropping basket (5) is hingedly connected with a discharge door (31).

4. A flax fibre pickling apparatus according to claim 1, characterised in that: The bottom surface of the shielding cover (6) is fixedly connected with a cleaning brush (32), and the cleaning brush (32) is located around the dropping port (7).

5. A method for pickling flax fibers, suitable for use in a pickling device for flax fibers according to any one of claims 1 to 4, characterized in that: The specific steps of the method are as follows: Step one: during the process of pickling flax fibers, the flax fibers need to be placed into the dropping basket (5) first; Step two: then the dropping mechanism moves the dropping basket (5) into the pickling tank (1); Step three: the pressing mechanism presses the flax fibers in the dropping basket (5) downward so that the flax fibers are immersed in the pickling liquid; Step four: then after the pickling of the flax fibers is completed, the dropping mechanism moves the dropping basket (5) upward, and the extrusion mechanism extrudes the flax fibers in the dropping basket (5) by acting on the pressing mechanism; Step four: then after the pickling of the flax fibers is completed, the dropping mechanism moves the dropping basket (5) upward, and the extrusion mechanism extrudes the flax fibers in the dropping basket (5) by acting on the pressing mechanism; Step five: when the feeding basket (5) moves up to the top, the limiting mechanism limits the pressing mechanism, the pressing mechanism is separated from the feeding basket (5), and the flax fibers in the feeding basket (5) are replaced; Step six: then the feeding basket (5) moves up, the releasing mechanism releases the limiting mechanism from limiting the pressing mechanism, and the pressing mechanism presses the flax fibers in the feeding basket (5) again.

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