A high-speed paper machine lining headbox based on quick adjustment of box lip opening

Abstract

This invention relates to the field of papermaking machine technology, specifically a high-speed paper machine liner headbox based on rapid adjustment of the headbox lip opening, comprising: a frame, on which two sets of side plates are provided, with an upper lip plate and a lower lip plate disposed between the two sets of side plates; a first electric telescopic rod, rotatably mounted on the side plate, the actuating end of the first electric telescopic rod being rotatably connected to the upper lip plate, capable of changing the opening between the upper and lower lip plates when the first electric telescopic rod is actuated; an elastic locking assembly, disposed on the side plate and connected to the rotating shaft of the upper lip plate, the elastic locking assembly including an energy storage structure and an engaging structure, the energy storage structure cooperating with the engaging structure to lock the rotating shaft of the upper lip plate; and an electromagnetic attraction device, disposed on the side plate, the electromagnetic attraction device cooperating with the engaging structure to release the locking structure from locking the rotating shaft of the upper lip plate, thereby improving production quality.

Description

Technical Field

[0001] This invention relates to the field of papermaking technology, specifically a high-speed paper machine liner headbox based on rapid adjustment of the box lip opening. Background Technology

[0002] In high-speed paper machine production, the headbox, as the "heart" of the forming section, directly determines the uniformity and stability of the pulp on the wire through the adjustment accuracy of its lip opening. It is a core factor affecting the basis weight, fiber orientation and final product quality of paper.

[0003] Traditional headboxes typically use pneumatic or hydraulic cylinders as the actuators for lip adjustment. While these solutions provide sufficient driving force, their inherent limitations become increasingly apparent under the complex, continuous, and high-vibration conditions of high-speed paper machines. Mechanical vibrations generated during operation inevitably transmit to the entire actuator system. Under prolonged and continuous vibration, the piston seals of pneumatic cylinders and the valve control systems of hydraulic cylinders are prone to slight stroke drift and response lag, leading to a decrease in positioning accuracy. This adjustment error, caused by the inherent instability of the actuator, directly results in a deviation of the lip opening from the set value. This leads to deviations in the pulp velocity, thickness, and injection angle that are difficult to compensate for in real time, ultimately resulting in persistent basis weight streaks or uniformity issues on the paper web. This severely restricts the pursuit of higher speeds and superior product quality by high-speed paper machines. Summary of the Invention

[0004] The purpose of this invention is to provide a high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-speed paper machine liner headbox based on rapid adjustment of the headbox lip opening, comprising: a frame, on which two sets of side plates are provided, and an upper lip plate and a lower lip plate are provided between the two sets of side plates; a first electric telescopic rod, rotatably mounted on the side plate, the actuating end of the first electric telescopic rod being rotatably connected to the upper lip plate, wherein when the first electric telescopic rod is actuated, the opening between the upper lip plate and the lower lip plate can be changed; an elastic locking assembly, disposed on the side plate and connected to the rotating shaft of the upper lip plate, the elastic locking assembly including an energy storage structure and an engaging structure, the energy storage structure cooperating with the engaging structure to lock the rotating shaft of the upper lip plate; and an electromagnetic attraction device, disposed on the side plate, the electromagnetic attraction device cooperating with the engaging structure to release the locking structure from locking the rotating shaft of the upper lip plate.

[0006] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, includes a locking structure comprising a locking wheel coaxially and fixedly connected to the rotating shaft of the upper lip plate, and a detachable hysteresis sleeve mounted on the side plate. A locking cover is slidably installed inside the hysteresis sleeve. The locking cover is coaxial with the locking wheel. When the locking cover is closed on the locking wheel, the locking wheel can be locked.

[0007] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, includes an energy storage structure comprising a telescopic shaft slidably connected to the hysteresis sleeve. One end of the telescopic shaft is coaxially fixedly connected to the locking cover, and the other end is provided with an iron block. The telescopic shaft and the hysteresis sleeve are connected by an axial locking kit, and a first cylindrical spring is sleeved on the telescopic shaft. One end of the first cylindrical spring is connected to the hysteresis sleeve, and the other end is connected to the locking cover.

[0008] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described above: the axial locking kit includes a limiting block disposed in the hysteresis sleeve and a limiting groove disposed along the length direction of the telescopic shaft, the limiting block and the limiting groove being slidably connected; the electromagnetic attraction device is disposed at the end of the hysteresis sleeve away from the locking cover.

[0009] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, further includes: a tank structure connected to the feed inlet of the frame, wherein a coaxial inner barrel is detachably installed within the tank structure, the inner diameter of the inner barrel being smaller than the inner diameter of the tank structure, and an annular baffle fitted against the inner wall of the tank structure is provided on the top of the inner barrel; filter holes are provided on both the inner barrel and the annular baffle; a feeding assembly disposed on the tank structure, the feeding assembly being used to guide the raw material into the inner barrel and drive the raw material to rotate; and a switching assembly disposed within the tank structure, wherein multiple sets of arc-shaped scrapers are rotatably mounted on the switching assembly, the arc-shaped scrapers being able to fit against the inner wall of the inner barrel when moving into the inner barrel.

[0010] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described above: the feeding assembly includes a connecting pipe fixedly installed on the end cover of the tank structure and a rotating component coaxially rotatably fitted with the connecting pipe. Multiple sets of follower plates are circumferentially and equidistantly arranged on the outer circumferential wall of the rotating component, and a strip-shaped through hole is provided on the rotating component between two adjacent sets of follower plates; the feeding assembly also includes a power structure for driving the rotating component to rotate.

[0011] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, includes a power structure comprising a first gear coaxially and fixedly connected to the rotating component and a drive device fixedly mounted on the end cover. A second gear is connected to the output shaft of the drive device, and the second gear meshes with the first gear.

[0012] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, includes the following switching assembly: a second electric telescopic rod fixedly installed on the outer wall of the tank structure, the actuating end of the second electric telescopic rod being fixedly connected to a collar disposed within the inner barrel, and the arc-shaped scraper being rotatably connected to the collar; multiple sets of guide plates circumferentially and equidistantly disposed on the collar, each guide plate having a vertical groove; a support structure slidably connected to the vertical groove, the support structure being connected to the arc-shaped scraper via a pull rod; and a trigger structure connected to the support structure, the trigger structure being capable of triggering the support structure to actuate, thereby causing the arc-shaped scraper to switch its deflection state.

[0013] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, as described above, includes a support structure comprising a transverse member slidably mounted within the vertical slot, a sliding frame slidably mounted on the transverse member, convex shafts rotatably mounted on both sides of the sliding frame, and the sliding frame rotatably connected to the pull rod; the sliding frame and the transverse member are connected by a second cylindrical spring; two sets of inclined slots are symmetrically arranged on the guide plate, and a protrusion extending toward the arc-shaped scraper is formed at the connection of the two sets of inclined slots, and the convex shaft can roll in the two sets of inclined slots.

[0014] The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described above: the triggering structure includes a trigger rod fixedly connected to the transverse member, one end of the trigger rod abutting and adapting to a stop plate disposed in the tank structure, and the other end abutting and adapting to the bottom wall of the tank structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it enables the locking of the upper lip plate shaft in the initial state, thus keeping the opening between the upper and lower lip plates constant. This ensures the production accuracy and quality of the paper, and this constant opening is maintained by the locking structure and the first electric telescopic rod, making the locking of the upper lip plate shaft more stable; during the movement of the arc-shaped scraper, the distance between the arc-shaped scraper and the inner wall of the inner drum allows the arc-shaped scraper to perform the action of scraping away impurities when moving upward. This avoids impurities being pushed into the inner drum and accumulating, and ensures that impurities on the inner wall of the inner drum can be effectively removed, preventing impurities from clogging the filter holes and reducing the filtration effect. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a high-speed paper machine liner headbox based on rapid adjustment of the box lip opening; Figure 2 This is a schematic diagram of another embodiment of a high-speed paper machine liner headbox based on rapid adjustment of the box lip opening. Figure 3 An exploded view of the elastic locking assembly in the headbox of a high-speed paper machine liner flowbox based on rapid adjustment of the box lip opening; Figure 4 This is a schematic diagram of the tank structure and the second electric telescopic rod in the headbox of a high-speed paper machine liner headbox based on rapid adjustment of the box lip opening. Figure 5 Exploded view of the tank structure, internal barrel, and rotating parts in a high-speed paper machine liner headbox based on rapid adjustment of box lip opening; Figure 6 This is a cross-sectional view of the tank structure in the headbox of a high-speed paper machine liner flowmeter based on rapid adjustment of the box lip opening. Figure 7 This is a schematic diagram of the switching component in the headbox of a high-speed paper machine liner flowbox, based on rapid adjustment of the box lip opening. Figure 8 This is a schematic diagram of another angle of the switching component in the headbox of a high-speed paper machine liner flowbox based on rapid adjustment of the box lip opening; Figure 9 for Figure 8 Enlarged view of the structure at point A in the middle; Figure 10 This is an exploded view of the switching component in the headbox of a high-speed paper machine liner flowbox, which is based on rapid adjustment of the box lip opening.

[0017] In the diagram: 1. Frame; 2. Side plate; 3. Upper lip plate; 301. Locking wheel; 4. First electric telescopic rod; 5. Lower lip plate; 6. Hysteresis sleeve; 601. Limiting block; 7. First cylindrical spring; 8. Telescopic shaft; 801. Limiting groove; 9. Locking cover; 10. Electromagnetic attraction device; 11. Tank structure; 12. Internal barrel; 1201. Annular baffle; 13. Rotating component; 1301. Strip-shaped through hole; 14. Follower plate; 15. First gear; 16. Connecting pipe; 17. Second gear; 18. Drive unit; 19. Stop plate; 20. Second electric telescopic rod; 21. Collar; 22. Guide plate; 2201. Vertical groove; 2202. Inclined groove; 2203. Protrusion; 23. Trigger rod; 24. Arc-shaped scraper; 25. Pull rod; 26. Sliding frame; 2601. Convex shaft; 27. Second cylindrical spring; 28. Horizontal component; 2801. Sliding connection; 29. ​​Pressure relief valve. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Please see Figures 1-10 As an embodiment of the present invention, the high-speed paper machine liner headbox based on rapid adjustment of the box lip opening includes: a frame 1, a first electric telescopic rod 4, an elastic locking assembly and an electromagnetic attraction device 10.

[0020] The frame 1 is provided with two sets of side plates 2, and an upper lip plate 3 and a lower lip plate 5 are provided between the two sets of side plates 2. In this embodiment, by adjusting the opening of the upper lip plate 3 and the lower lip plate 5, the pulp flow rate, pulp layer thickness and spray angle can be adjusted, thereby effectively adjusting the fiber orientation and strength of the paper. The specific adjustment method is as follows:

[0021] The first electric telescopic rod 4 is rotatably mounted on the side plate 2. The actuating end of the first electric telescopic rod 4 is rotatably connected to the upper lip plate 3. When the first electric telescopic rod 4 is actuated, it can change the opening between the upper lip plate 3 and the lower lip plate 5. The lower lip plate 5 is fixedly mounted on the side plate 2, and the upper lip plate 3 is rotatably mounted on the side plate 2. When the first electric telescopic rod 4 is actuated, it can change the pitch angle of the upper lip plate 3, so that the opening between the end of the upper lip plate 3 and the lower lip plate 5 can be adjusted.

[0022] The elastic locking assembly is disposed on the side plate 2 and connected to the rotating shaft of the upper lip plate 3. The elastic locking assembly includes an energy storage structure and a locking structure. The energy storage structure cooperates with the locking structure to lock the rotating shaft of the upper lip plate 3. The electromagnetic attraction device 10 is disposed on the side plate 2. The electromagnetic attraction device 10 cooperates with the locking structure to release the locking structure from locking the rotating shaft of the upper lip plate 3.

[0023] In this embodiment, the electromagnetic attraction device 10 is in a de-energized state in the initial state. At this time, the energy storage structure and the locking structure cooperate to lock the rotating shaft of the upper lip plate 3. This means that in the initial state, the locking of the upper lip plate 3 does not completely depend on the first electric telescopic rod 4, thereby avoiding the decrease in stroke accuracy of the first electric telescopic rod 4 under equipment vibration, which would cause a deviation in the opening between the upper lip plate 3 and the lower lip plate 5 and affect paper production.

[0024] When it is necessary to adjust the opening between the upper lip plate 3 and the lower lip plate 5, the electromagnetic attraction device 10 should be energized first so that the locking structure can release the lock on the upper lip plate 3's rotating shaft. At this time, when the first electric telescopic rod 4 is activated, the opening between the upper lip plate 3 and the lower lip plate 5 can be adjusted. After the adjustment is completed, the electromagnetic attraction device 10 will be de-energized again. At this time, the energy storage structure and the locking structure will cooperate again and lock the upper lip plate 3's rotating shaft again. In this way, during use, the locking structure or its cooperation with the first electric telescopic rod 4 can be used to lock the upper lip plate 3, ensuring the accuracy of the opening between the upper lip plate 3 and the lower lip plate 5.

[0025] Please see Figures 1-3 The engaging structure includes a locking wheel 301 coaxially fixedly connected to the rotating shaft of the upper lip plate 3 and a detachable hysteresis sleeve 6 mounted on the side plate 2. A locking cover 9 is slidably installed inside the hysteresis sleeve 6. The locking cover 9 is coaxial with the locking wheel 301. When the locking cover 9 is closed on the locking wheel 301, it can lock the locking wheel 301. The energy storage structure includes a telescopic shaft 8 slidably connected to the hysteresis sleeve 6. One end of the telescopic shaft 8 is coaxially fixedly connected to the locking cover 9, and the other end is provided with an iron block. There is a communication between the telescopic shaft 8 and the hysteresis sleeve 6. The axial locking assembly is connected, and a first cylindrical spring 7 is sleeved on the telescopic shaft 8. One end of the first cylindrical spring 7 is connected to the hysteresis sleeve 6, and the other end is connected to the lock cover 9. The axial locking assembly includes a limiting block 601 disposed in the hysteresis sleeve 6 and a limiting groove 801 disposed along the length direction of the telescopic shaft 8. The limiting block 601 and the limiting groove 801 are slidably connected, so that the lock cover 9 and the hysteresis sleeve 6 can form an axial locking state, preventing the lock cover 9 from rotating with the lock wheel 301 when it is engaged with the lock wheel 301.

[0026] The electromagnetic attraction device 10 is located at the end of the hysteresis sleeve 6 away from the locking cover 9.

[0027] In this embodiment, in the initial state, the first columnar spring 7 is in a compressed state, so that the elastic force provided by the first columnar spring 7 can push the lock cover 9 to press against the lock wheel 301. At this time, the rotating shaft of the upper lip plate 3 is in a locked state. When the electromagnetic attraction device 10 is activated, the electromagnetic attraction device 10 can generate an attraction force on the iron block. Under the action of this attraction force, the telescopic shaft 8 will move towards the electromagnetic attraction device 10 and further compress the first columnar spring 7. During this process, the lock cover 9 can separate from the lock wheel 301, thereby unlocking the rotating shaft of the upper lip plate 3.

[0028] When the first electric telescopic rod 4 drives the upper lip plate 3 to adjust the opening between the upper lip plate 3 and the lower lip plate 5, the electromagnetic attraction device 10 will be de-energized. At this time, the first columnar spring 7 will release elastic potential energy, so that the lock cover 9 will re-engage with the lock wheel 301, thereby locking the upper lip plate 3 shaft again.

[0029] The above settings enable the upper lip plate 3 to be locked in the initial state, thus keeping the opening between the upper lip plate 3 and the lower lip plate 5 constant. This ensures the production accuracy and quality of the paper. Moreover, this constant opening is maintained by the locking structure and the first electric telescopic rod 4, making the locking of the upper lip plate 3 shaft more stable.

[0030] Please see Figures 4-6 The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening also includes: tank structure 11, feeding assembly and switching assembly.

[0031] The tank structure 11 is connected to the feed inlet of the frame 1. A coaxial inner barrel 12 is detachably installed inside the tank structure 11. The inner diameter of the inner barrel 12 is smaller than the inner diameter of the tank structure 11, and an annular baffle 1201 that fits against the inner wall of the tank structure 11 is provided on the top of the inner barrel 12. Both the inner barrel 12 and the annular baffle 1201 are provided with filter holes. The feeding assembly is mounted on the tank structure 11 and is used to guide the raw material into the inner barrel 12 and rotate the raw material. The feeding assembly includes a connecting pipe 16 fixedly installed on the end cap of the tank structure 11 and a connecting pipe... The rotating component 13 is coaxially fitted with the connecting pipe 16. Multiple sets of follower plates 14 are circumferentially and equidistantly arranged on the outer circumference of the rotating component 13, and a strip-shaped through hole 1301 is provided between two adjacent sets of follower plates 14 on the rotating component 13. The feeding assembly also includes a power structure for driving the rotating component 13 to rotate. The power structure includes a first gear 15 coaxially and fixedly connected to the rotating component 13 and a drive device 18 fixedly installed on the end cover. A second gear 17 is connected to the output shaft of the drive device 18. The second gear 17 meshes with the first gear 15. A pressure relief valve 29 is also provided on the end cover.

[0032] In this embodiment, the slurry enters the rotating member 13 through the connecting pipe 16. At this time, the driving device 18 enables the rotating member 13 to rotate through the transmission of the first gear 15 and the second gear 17. When the slurry is sprayed out from the strip-shaped through hole 1301, it can follow the rotating member 13 to rotate under the action of the follower plate 14. At this time, the slurry will not only move towards the side of the inner tank 12 under the action of pressure and can pass through the side wall of the inner tank 12 to be filtered, but also, since the slurry is in a rotating state in the inner tank 12, the impurities in the slurry can be thrown onto the inner wall of the inner tank 12 under the action of centrifugal force. Even if the impurities are attached to the inner wall of the inner tank 12, the subsequent arc-shaped scraper 24 can accurately scrape off these impurities.

[0033] Please see Figures 7-10 The switching assembly is disposed within the tank structure 11. Multiple sets of arc-shaped scrapers 24 are rotatably mounted on the switching assembly. When the arc-shaped scrapers 24 move into the inner wall of the inner barrel 12, they fit against the inner wall of the inner barrel 12. The switching assembly includes: a second electric telescopic rod 20 fixedly mounted on the outer wall of the tank structure 11, the actuating end of the second electric telescopic rod 20 being fixedly connected to a collar 21 disposed within the inner barrel 12; the arc-shaped scrapers 24 being rotatably connected to the collar 21; multiple sets of guide plates 22 circumferentially and equidistantly disposed on the collar 21, each guide plate 22 having a vertical groove 2201; and a support structure slidably connected to the vertical groove 2201. The support structure is connected to the arc-shaped scrapers 24 via a pull rod 25. The support structure includes a horizontal member 28 slidably mounted within the vertical groove 2201. Specifically, the horizontal member 28 has a sliding connection portion 2801. 1. It is slidably connected to the vertical groove 2201; a sliding frame 26 is slidably mounted on the horizontal member 28, and a convex shaft 2601 is rotatably mounted on both sides of the sliding frame 26, and the sliding frame 26 is rotatably connected to the pull rod 25; the sliding frame 26 and the horizontal member 28 are connected by a second cylindrical spring 27; two sets of inclined grooves 2202 are also symmetrically arranged on the guide plate 22, and the connection of the two sets of inclined grooves 2202 forms an extension towards the arc-shaped scraper 24. The protrusion 2203 and the convex shaft 2601 are capable of rolling in the two sets of inclined grooves 2202; the triggering structure is connected to the support structure and can trigger the support structure to switch the deflection state of the arc-shaped scraper 24. The triggering structure includes a trigger rod 23 fixedly connected to the transverse member 28. One end of the trigger rod 23 abuts against the stop plate 19 disposed in the tank structure 11 and the other end abuts against the bottom wall of the tank structure 11.

[0034] In this embodiment, initially, the second cylindrical spring 27 is stretched, causing the convex shaft 2601 to remain at the end of the inclined groove 2202 away from the protrusion 2203. When the convex shaft 2601 is in the upper inclined groove 2202, the pull rod 25 can pull the arc-shaped scraper 24 upward, allowing the arc-shaped scraper 24 to adhere to the inner wall of the inner barrel 12. At this time, when the arc-shaped scraper 24 moves, it can scrape away impurities attached to the inner wall of the inner barrel 12. When the convex shaft 2601 is in the lower inclined groove 2202, the arc-shaped scraper 24 deflects downward. At this time, the arc-shaped scraper 24 can separate from the inner wall of the inner barrel 12 during the lifting and lowering process. Based on this principle, in the initial state, multiple sets of arc-shaped scrapers 24 are at a high point, and the arc-shaped scrapers 24 are separated from the inner barrel 12. The second electric telescopic rod 20 can drive multiple sets of arc-shaped scrapers 24 to move downwards. During this process, the arc-shaped scrapers 24 do not contact the inner barrel 12, thereby preventing impurities on the side wall of the inner barrel 12 from being carried to the bottom of the inner barrel 12 and accumulating when the arc-shaped scrapers 24 move downwards. When the arc-shaped scrapers 24 move to the lowest point of their stroke, the trigger rod 23 will abut against the bottom of the inner barrel 12, so that the trigger rod 23 can drive the horizontal member 28 to move upwards, and the convex shaft 2601 will switch from the lower inclined groove 2202 to the upper inclined groove 2202. At this time, when the arc-shaped scrapers 24 move upwards, they can adhere to the inner wall of the inner barrel 12 and move upwards, thereby scraping off the impurities attached to the inner wall of the inner barrel 12 and carrying them to the top of the inner barrel 12, and then falling onto the annular baffle 1201 for subsequent collection.

[0035] Based on the above settings, during the movement of the arc-shaped scraper 24, the distance between the arc-shaped scraper 24 and the inner wall of the inner barrel 12 is such that the arc-shaped scraper 24 can perform the action of scraping away impurities when it moves upward. This can prevent impurities from being pushed into the inner barrel 12 and accumulating, and can also ensure that impurities on the inner wall of the inner barrel 12 can be effectively removed, preventing impurities from clogging the filter holes and causing a decrease in filtration effect.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening, characterized in that, include: The machine includes a frame with two sets of side plates, and an upper lip plate and a lower lip plate positioned between the two sets of side plates. A first electric telescopic rod is rotatably mounted on the side plate, with its actuating end rotatably connected to the upper lip plate. When the first electric telescopic rod actuates, it can change the opening between the upper and lower lip plates. An elastic locking assembly is disposed on the side plate and connected to the rotating shaft of the upper lip plate. The elastic locking assembly includes an energy storage structure and a locking structure. The energy storage structure cooperates with the locking structure to lock the rotating shaft of the upper lip plate. An electromagnetic attraction device is disposed on the side plate. The electromagnetic attraction device cooperates with the locking structure to release the locking structure from locking the rotating shaft of the upper lip plate.

2. The high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 1, characterized in that, The locking structure includes a locking wheel that is fixedly connected coaxially to the rotating shaft of the upper lip plate and a detachable retaining sleeve mounted on the side plate. A locking cover is slidably installed inside the retaining sleeve. The locking cover is coaxial with the locking wheel. When the locking cover is closed on the locking wheel, the locking wheel can be locked.

3. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 2, characterized in that, The energy storage structure includes a telescopic shaft that is slidably connected to the hysteresis sleeve. One end of the telescopic shaft is coaxially fixedly connected to the lock cover, and the other end is provided with an iron block. The telescopic shaft and the hysteresis sleeve are connected by an axial locking kit, and a first cylindrical spring is sleeved on the telescopic shaft. One end of the first cylindrical spring is connected to the hysteresis sleeve, and the other end is connected to the lock cover.

4. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 3, characterized in that, The axial locking assembly includes a limiting block disposed within the hysteresis sleeve and a limiting groove disposed along the length of the telescopic shaft, wherein the limiting block and the limiting groove are slidably connected; the electromagnetic attraction device is disposed at the end of the hysteresis sleeve away from the locking cover.

5. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 1, characterized in that, It also includes: a tank structure connected to the feed inlet of the frame, wherein a coaxial inner barrel is detachably installed inside the tank structure, the inner diameter of the inner barrel is smaller than the inner diameter of the tank structure, and the top of the inner barrel is provided with an annular baffle that fits against the inner wall of the tank structure; both the inner barrel and the annular baffle are provided with filter holes; a feeding assembly disposed on the tank structure, the feeding assembly being used to guide the raw material into the inner barrel and drive the raw material to rotate; and a switching assembly disposed inside the tank structure, wherein multiple sets of arc-shaped scrapers are rotatably installed on the switching assembly, the arc-shaped scrapers being able to fit against the inner wall of the inner barrel when moving into the inner barrel.

6. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 5, characterized in that, The feeding assembly includes a connecting pipe fixedly installed on the end cover of the tank structure and a rotating component coaxially rotatably fitted with the connecting pipe. Multiple sets of follower plates are equidistantly arranged on the outer circumferential wall of the rotating component, and a strip-shaped through hole is provided on the rotating component between two adjacent sets of follower plates. The feeding assembly also includes a power structure for driving the rotating component to rotate.

7. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 6, characterized in that, The power structure includes a first gear fixedly connected to the rotating component on the same axis and a drive device fixedly mounted on the end cover. A second gear is connected to the output shaft of the drive device, and the second gear meshes with the first gear.

8. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 5, characterized in that, The switching assembly includes: a second electric telescopic rod fixedly installed on the outer wall of the tank structure, the actuating end of the second electric telescopic rod being fixedly connected to a collar disposed inside the inner barrel, and the arc-shaped scraper being rotatably connected to the collar; multiple sets of guide plates circumferentially and equidistantly disposed on the collar, the guide plates being provided with vertical grooves; a support structure slidably connected to the vertical grooves, the support structure being connected to the arc-shaped scraper via a pull rod; and a trigger structure connected to the support structure, the trigger structure being able to trigger the support structure to move so that the arc-shaped scraper switches its deflection state.

9. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 8, characterized in that, The support structure includes a horizontal member slidably installed in the vertical groove, a sliding frame slidably installed on the horizontal member, and convex shafts rotatably installed on both sides of the sliding frame, and the sliding frame is rotatably connected to the pull rod; the sliding frame and the horizontal member are connected by a second cylindrical spring; two sets of inclined grooves are also symmetrically arranged on the guide plate, and a protrusion extending toward the arc-shaped scraper is formed at the connection of the two sets of inclined grooves, and the convex shaft can roll in the two sets of inclined grooves.

10. A high-speed paper machine liner headbox based on rapid adjustment of the box lip opening as described in claim 9, characterized in that, The triggering structure includes a trigger rod fixedly connected to the horizontal member. One end of the trigger rod abuts against a stop plate disposed inside the tank structure, and the other end abuts against the bottom wall of the tank structure.

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