High-speed paper web stabilizer with paper guiding function

Abstract

The invention relates to the technical field of papermaking drying auxiliary equipment, and provides a high-speed paper web stabilizer with a paper injection function, the high-speed paper web stabilizer with the paper injection function comprises a box body, an air flow passing cavity is formed in the box body, a plurality of first air inlet holes are formed in the two sides of the box body in the width direction, and an air outlet pipe is arranged on the box body; the rectifying plate is arranged on the lower portion in the box body, the upper surface of the rectifying plate faces the interior of the box body, the lower surface of the rectifying plate faces the outer side of the box body, and a plurality of second air inlet holes are formed in the rectifying plate; the negative pressure adjusting device comprises a linear telescopic driving mechanism connected to the box body and an adjusting valve plate connected to the linear telescopic driving mechanism, the adjusting valve plate is attached to the rectifying plate and is provided with an adjusting hole, and the linear telescopic driving mechanism can drive the adjusting valve plate to move so as to change the ventilation area of the second air inlet hole. According to the high-speed paper web stabilizer with the paper guiding function, the phenomenon that a paper web is folded and wrinkled under the condition of high speed can be avoided.

Description

Technical Field

[0001] This application relates to the technical field of papermaking drying auxiliary equipment, and more specifically, to a high-speed paper web stabilizer with a paper guiding function. Background Art

[0002] During the papermaking operation in the paper machine production line, the dryer cylinder and the paper stabilizer are both very important devices (components). During papermaking, the dryer cylinder evaporates the moisture in the paper by the heat of the steam introduced into it. The heat released when the steam condenses inside the dryer cylinder raises the temperature of the dryer cylinder, and then heats and dries the paper sheet running on the surface of the roll shell. In addition, the rotation and high temperature of the dryer cylinder also play a role in finishing the paper surface, making the paper surface smoother and more polished, and improving the quality of the paper. During the operation of the paper machine production line, the paper stabilizer is slightly pressed above the dryer cylinder through a sealing plate. Through the suction of the fan, a negative pressure area is generated inside the paper stabilizer, so that the negative pressure is transferred to the dryer cylinder under the paper stabilizer. Through the action of the negative pressure of the paper stabilizer, the paper web is tightly attached above the dryer cylinder felt, thus realizing the transfer of the paper web between the dryer cylinders. However, with the continuous development of production technology and the continuous improvement of the production capacity of paper machines, the production speed of papermaking is increasing continuously. At high speeds, the transfer speed of the paper web is getting faster and faster. The original paper stabilizer cannot accurately adjust the internal negative pressure, resulting in the phenomenon of folding and wrinkling of the paper web at high speeds. Summary of the Invention

[0003] In view of this, this application provides a high-speed paper web stabilizer with a paper guiding function to solve the technical problem that the existing paper stabilizer is difficult to adjust the negative pressure according to different paper web transfer speeds.

[0004] This application provides a high-speed paper web stabilizer with a paper guiding function, wherein the high-speed paper web stabilizer with a paper guiding function includes: A box body, which has an air flow passage cavity. A plurality of first air inlet holes are provided on both sides in the width direction of the box body. The first air inlet holes communicate the air flow passage cavity with the outside of the box body. An air outlet pipe is provided on the box body, and the air outlet pipe is used to connect the air flow passage cavity to an air extraction device outside the box body; A rectifying plate, which is arranged at the lower part inside the box body. The upper surface of the rectifying plate faces the inside of the box body, and the lower surface of the rectifying plate faces the outside of the box body. A plurality of second air inlet holes are provided on the rectifying plate; Negative pressure regulating device, the negative pressure regulating device includes a linear telescopic driving mechanism connected to the box body and a regulating valve plate connected to the linear telescopic driving mechanism. The regulating valve plate abuts against the rectifying plate and has regulating holes, and the linear telescopic driving mechanism can drive the regulating valve plate to move to change the ventilation area of the second air inlet hole.

[0005] Further, one end of the box body in the length direction forms a paper guiding area. The linear telescopic driving mechanism can drive the regulating valve plate to move between a first position and a second position along the length direction of the box body. In the first position, all the second air inlet holes on the rectifying plate are not blocked by the regulating valve plate. In the second position, the second air inlet holes located in the paper guiding area on the rectifying plate are not blocked by the regulating valve plate, and at least a part of the second air inlet holes located in the part of the rectifying plate outside the paper guiding area are blocked by the regulating valve plate.

[0006] Further, the blocking includes that the second air inlet hole is completely blocked or partially blocked.

[0007] Further, the second air inlet hole is partially blocked as follows: a part of the second air inlet hole is blocked by the regulating valve plate around the corresponding regulating hole, and the other part of the second air inlet hole is projected within the corresponding regulating hole on the regulating valve plate.

[0008] Further, limiting sheet metals are connected to both sides of the rectifying plate in the width direction. Both sides of the regulating valve plate in the width direction are limited between the corresponding limiting sheet metals and the rectifying plate, and the linear telescopic driving mechanism can drive the regulating valve plate to move along the length direction of the regulating valve plate.

[0009] Further, the high-speed paper web stabilizer with paper guiding function includes an adjustable seal connected to the outside of the box body, and the adjustable seal can always contact the dryer felt located outside the box body.

[0010] Further, the adjustable seal includes a fixing plate, a movable compensation mechanism and a plurality of first sealing strips. The fixing plate is detachably connected to the outside of the box body. The movable compensation mechanism is movably connected to the fixing plate. The plurality of first sealing strips are connected to the side of the movable compensation mechanism facing away from the box body. The movement of the movable compensation mechanism enables at least one of the plurality of first sealing strips to always contact the dryer felt located outside the box body.

[0011] Furthermore, the movable compensation mechanism includes a sealing strip mounting frame, a top support member and a cam, one end of the cam is hinged to the fixed plate, the other end of the cam is hinged to the sealing strip mounting frame, the top support member is installed on the sealing strip mounting frame, the lower end of the top support member faces the cam, and the multiple first sealing strips are installed on the side of the sealing strip mounting frame away from the box body.

[0012] Furthermore, a sealing plate is connected to the fixing plate, a second sealing strip is arranged at the end of the sealing plate, the lower end of the sealing strip mounting frame abuts against the second sealing strip, and a clamping piece is connected to the first end of the cam, and the clamping piece is clamped with the sealing strip mounting frame.

[0013] Furthermore, a plurality of cover plates arranged in sequence are provided on the outer peripheral side of the box body, and there are gaps between adjacent cover plates.

[0014] The high-speed paper web stabilizer with paper threading function provided by the present invention has the following beneficial effects: Compared with the prior art, in the high-speed paper web stabilizer with paper threading function provided by the present invention, the air flow entering the air flow path cavity from the first air inlet hole and the second air inlet hole can be continuously generated by the air suction device, and the air flow then continuously flows out of the air outlet pipe, and finally negative pressure is generated around the box body. When the high-speed paper web stabilizer with paper threading function is used between the drying cylinders for transferring and drying the paper web, the negative pressure generated can make the paper web tightly fit on the drying cylinder felt, thereby realizing the transfer of the paper web between the drying cylinders, and the linear telescopic drive mechanism can drive the regulating valve The plate moves to change the ventilation area of ​​the second air inlet hole, so the negative pressure value below the box can be adjusted by adjusting the flow rate of the air flow entering the air flow cavity through the rectifying plate to adapt to the negative pressure requirements under different paper web transfer speeds. For example, when the paper web transfer speed is slow, the air flow rate passing through the rectifying plate can be reduced to save the energy consumption of the exhaust device. When the paper web transfer speed is fast, the air flow rate passing through the rectifying plate can be increased to increase the negative pressure to ensure that the paper web is still tightly attached to the drying cylinder blanket, thereby avoiding the phenomenon of folding and wrinkling of the paper web at high vehicle speeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a front view schematic diagram of a part of the structure of a high-speed paper web stabilizer with paper threading function according to an embodiment of the present application; Figure 2 is Figure 1 an enlarged view of location A in Figure 3 is Figure 1 an enlarged view of location B in Figure 4 is a schematic side view of a high - speed paper web stabilizer with a paper guiding function according to an embodiment of the present application; Figure 5 is Figure 4 an enlarged view of location A in Figure 6 is Figure 4 an enlarged view of location B in Figure 7 is a schematic side view of another side of a high - speed paper web stabilizer with a paper guiding function according to an embodiment of the present application; Figure 8 is Figure 7 an enlarged view of location A in

[0017] Explanation of reference numerals: 1 - connecting beam; 2 - limiting sheet metal; 3 - fixing plate; 4 - first sealing strip; 5 - sealing strip mounting bracket; 6 - ejector rod; 7 - cam; 8 - spray washing pipeline; 9 - nozzle; 10 - sealing plate; 11 - second sealing strip; 12 - chuck part; 13 - movable screw; 14 - limiting seat; 15 - upper cover plate; 16 - middle cover plate; 17 - lower cover plate; 18 - bottom cover plate; 71 - hinge hole; 100 - box body; 101 - first air inlet hole; 102 - air outlet pipe; 200 - rectifying plate; 201 - second air inlet hole; 300 - linear telescopic driving mechanism; 301 - cylinder body; 302 - piston rod; 400 - regulating valve plate; 401 - regulating hole. Detailed implementation manners

[0018] For the convenience of understanding the present application, the present application will be described more comprehensively below with reference to the relevant drawings. One or at least three embodiments of the present application are exemplarily shown in the drawings to make the understanding of the technical solutions disclosed in the present application more accurate and thorough. However, it should be understood that the present application can be implemented in many different forms and is not limited to the embodiments described below.

[0019] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components; in the description of this application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and cannot be construed as a limitation of this application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In addition, if there is a description involving "first", "second", etc. in the embodiments of this application, the description of "first", "second", etc. is only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the technical features indicated. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously.

[0021] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0022] See Figures 1 to 8 , a high-speed paper web stabilizer with a paper guiding function is provided. Among them, the high-speed paper web stabilizer with a paper guiding function includes: A box body 100, in which there is an air flow passage cavity. On both sides in the width direction of the box body 100, a plurality of first air inlet holes 101 are provided. The first air inlet holes 101 communicate the air flow passage cavity with the outside of the box body 100. An air outlet pipe 102 is provided on the box body 100. The air outlet pipe 102 is used to connect the air flow passage cavity to an air extraction device outside the box body 100; A rectifying plate 200, arranged at the lower part inside the box body 100. The upper surface of the rectifying plate 200 faces the inside of the box body 100, and the lower surface of the rectifying plate 200 faces the outside of the box body 100. A plurality of second air inlet holes 201 are provided on the rectifying plate 200; Negative pressure regulating device, the negative pressure regulating device includes a linear telescopic driving mechanism 300 connected to the box body 100 and a regulating valve plate 400 connected to the linear telescopic driving mechanism 300. The regulating valve plate 400 abuts against the rectifying plate 200 and has a regulating hole 401. The linear telescopic driving mechanism 300 can drive the regulating valve plate 400 to move to change the ventilation area of the second air inlet hole 201.

[0023] Since in the high-speed paper web stabilizer with a paper guiding function provided by the present invention, the air extraction device can continuously generate the air flow entering the air flow path cavity from the first air inlet hole 101 and the second air inlet hole 201, and the air flow continuously flows out of the air outlet pipe 102, and finally generates a negative pressure around the box body 100. When the high-speed paper web stabilizer with a paper guiding function is applied between the drying cylinders for transferring and drying the paper web, the generated negative pressure can make the paper web closely adhere to the dryer felt, so as to realize the transfer of the paper web between the drying cylinders. And the linear telescopic driving mechanism 300 can drive the regulating valve plate 400 to move to change the ventilation area of the second air inlet hole 201. Therefore, the negative pressure value below the box body 100 can be adjusted by adjusting the flow rate of the air flow entering the air flow path cavity through the rectifying plate 200 to meet the negative pressure requirements at different paper web transfer speeds. For example, when the paper web transfer speed is slow, the air flow rate passing through the rectifying plate 200 can be reduced to save the energy consumption of the air extraction device. When the paper web transfer speed is fast, the air flow rate passing through the rectifying plate 200 can be increased to increase the negative pressure to ensure that the paper web still closely adheres to the dryer felt, thereby avoiding the phenomenon of the paper web being folded and wrinkled at high vehicle speeds.

[0024] According to a specific embodiment of the present application, a paper guiding area S is formed at one end of the box body 100 in the length direction. The linear telescopic driving mechanism 300 can drive the regulating valve plate 400 to move between a first position and a second position along the length direction of the box body 100. In the first position, all the second air inlet holes 201 on the rectifying plate 200 are not blocked by the regulating valve plate 400. In the second position, the second air inlet holes 201 located in the paper guiding area S on the rectifying plate 200 are not blocked by the regulating valve plate 400, and at least a part of the second air inlet holes 201 among the second air inlet holes 201 located in the part of the rectifying plate 200 outside the paper guiding area S are blocked by the regulating valve plate 400. To achieve the above functions when the regulating valve plate 400 is in the first position and the second position, the regulating valve plate 400 has various structural design methods. The first structural design method: When the regulating valve plate 400 moves between the first position and the second position, it will never enter the paper guiding area S. This can be achieved by controlling the length dimension design of the regulating valve plate 400. And when the regulating valve plate 400 is in the first position, the positions of the second air inlet holes 201 located in the part of the rectifying plate 200 outside the paper guiding area S correspond to the positions of the adjusting holes 401 on the regulating valve plate 400 at this time, and the projections of the second air inlet holes 201 located in the part of the rectifying plate 200 outside the paper guiding area S along the thickness direction of the rectifying plate 200 are all located within the corresponding adjusting holes 401.The second structural design method: When the regulating valve plate 400 moves between the first position and the second position, it enters the paper guiding area S. However, by designing the size of the adjusting holes 401 of the regulating valve plate 400 in the part located in the paper guiding area S, when the regulating valve plate 400 is in the first position and the second position, the projections of the second air inlet holes 201 on the rectifying plate 200 in the paper guiding area S along the thickness direction of the rectifying plate 200 on the regulating valve plate 400 are all located within the corresponding adjusting holes 401. At this time, it can be achieved by designing the size of the adjusting holes 401 to be larger than the size of the corresponding second air inlet holes 201 in the paper guiding area S or by designing the part of the regulating valve plate 400 in the paper guiding area S to be an overall hollow part covering all the second air inlet holes 201 in the paper guiding area S. Since in this embodiment, the linear telescopic driving mechanism 300 can be operated to drive the regulating valve plate 400 to move between the first position and the second position, and by moving the regulating valve plate 400, the second air inlet holes 201 on the rectifying plate 200 are blocked (including completely blocked and partially blocked) or not blocked to change the ventilation area of the second air inlet holes 201 on the rectifying plate 200, thereby adjusting the negative pressure value below the box body 100. Specifically, when the paper machine starts the paper guiding function, the regulating valve plate 400 can be in the second position. At this time, the second air inlet holes 201 on the rectifying plate 200 in the paper guiding area S are not blocked by the regulating valve plate 400, and at least a part of the second air inlet holes 201 in the part of the rectifying plate 200 outside the paper guiding area S are blocked by the regulating valve plate 400, thereby reducing the ventilation area of the part of the rectifying plate 200 outside the paper guiding area S in the paper guiding area S, so that the suction volume in the paper guiding area S (i.e., the area close to the operation side) of the high-speed paper web stabilizer is much larger than that in other areas. Therefore, a higher negative pressure will be generated in the paper guiding area S, enabling the paper web to complete the paper printing action and cooperate with the drying cylinder to complete the function of cordless paper guiding.;

[0025] Among them, the linear telescopic driving mechanism 300 can specifically be a cylinder. The cylinder block 301 of the cylinder is connected to the box body 100, and the end of the piston rod 302 of the cylinder is connected with a connecting beam 1. The regulating valve plate 400 is connected below the connecting beam 1.

[0026] According to the specific embodiment of the present application, the blocking of the second air inlet holes 201 by the regulating valve plate 400 can include that the second air inlet holes 201 are completely blocked or partially blocked by the regulating valve plate 400. The partial blocking of the second air inlet holes 201 can specifically be that a part of the second air inlet holes 201 is blocked by the regulating valve plate 400 around the corresponding adjusting holes 401, and the projections of the other part of the second air inlet holes 201 on the regulating valve plate 400 are all located within the corresponding adjusting holes 401.

[0027] According to a preferred embodiment of the present application, limiting sheet metals 2 are connected (e.g., welded) to both sides of the rectifying plate 200 in the width direction. Both sides of the regulating valve plate 400 in the width direction are limited between the corresponding limiting sheet metals 2 and the rectifying plate 200. The linear telescopic driving mechanism 300 can drive the regulating valve plate 400 to move along the length direction of the regulating valve plate 400. A sliding limiting guide groove for the regulating valve plate 400 to move along the length direction of the regulating valve plate 400 is formed between the limiting sheet metal 2 and the rectifying plate 200, which can make the regulating valve plate 400 slide more smoothly on the rectifying plate 200 and always slide close to the rectifying plate 200, improving the matching fineness between the regulating valve plate 400 and the rectifying plate 200 and ensuring that the regulating valve plate 400 accurately adjusts the ventilation area of the second air inlet hole 201.

[0028] According to an embodiment of the present application, a high-speed paper web stabilizer with a paper guiding function includes an adjustable seal connected to the outside of the box body 100, and the adjustable seal can always contact the dryer felt located outside the box body 100.

[0029] Specifically, the adjustable seal includes a fixing plate 3, a motion compensation mechanism, and a plurality of first sealing strips 4. The fixing plate 3 is detachably connected to the outside of the box body 100. The motion compensation mechanism is movably connected to the fixing plate 3. The plurality of first sealing strips 4 are connected to the side of the motion compensation mechanism facing away from the box body 100. The movement of the motion compensation mechanism enables one of the plurality of first sealing strips 4 to always contact the dryer felt located outside the box body 100. Preferably, the lengths of the plurality of first sealing strips 4 are different from each other.

[0030] According to a specific embodiment of the present application, the motion compensation mechanism includes a sealing strip mounting frame 5, a top support member (e.g., a top rod 6), and a cam 7. One end of the cam 7 is hinged to the fixing plate 3 through a hinge hole 71. The hinge connection between the cam 7 and the fixing plate 3 is not shown in the drawings. In fact, a side extension plate can be formed on the fixing plate 3, and the cam 7 is hinged to the side extension plate of the fixing plate 3. The other end of the cam 7 is hinged to the sealing strip mounting frame 5. The top support member is installed on the sealing strip mounting frame 5. The lower end of the top support member faces the cam 7. The plurality of first sealing strips 4 are installed on the side of the sealing strip mounting frame 5 facing away from the box body 100.

[0031] Specifically, on the upper part of one side of the box body 100 of the high-speed paper web stabilizer, there are two adjustable seals arranged at intervals. The area between the two adjustable seals is called the peeling zone. The first air inlet holes 101 at the part of the box body 100 corresponding to the peeling zone can be evenly arranged. While the paper web is rotating at high speed, the distance between the paper web and the dryer felt is continuously adjusted through the adjustable seals, so as to form a better sealed cavity in this area, thereby forming a higher negative pressure during the suction process. Specifically, at the same time, since the dryer felt in contact with the paper web during the production process is constantly moving, and the adjustable sealing strip continuously contacts the felt through a plurality of first sealing strips 4 with different lengths, the cam 7 is continuously moved back and forth under the action of the thrust of the dryer felt. The ejector rod 6 continuously contacts the cam 7 to ensure that among the plurality of first sealing strips 4, there is always a first sealing strip 4 that contacts the dryer felt outside the box body 100, so as to keep the negative pressure in the peeling zone unchanged and achieve the effect of stabilizing the paper web at high vehicle speeds with this high-speed paper web stabilizer.

[0032] This high-speed paper web stabilizer generates suction force on the dryer cylinder during the operation of the paper machine. During production, some paper dust and paper fluff are carried in the wet air. After long-term use, this part of the paper fluff accumulates on the air extraction rectifying plate 200, which will affect the ventilation area of the rectifying plate 200 and thus affect the use effect of the paper web stabilizer. To solve this problem, a flushing device is provided inside the box body 100. The flushing device specifically includes a spray flushing pipeline 8 and a plurality of nozzles 9 arranged at different angles on the spray flushing pipeline 8. Connecting to a compressed air source or a clean water source can achieve the cleaning of the rectifying plate 200 with full coverage.

[0033] Furthermore, a sealing plate 10 is connected to the fixing plate 3. A second sealing strip 11 is arranged at the end of the sealing plate 10. The lower end of the sealing strip mounting frame 5 abuts against the second sealing strip 11. A clamping head part 12 is connected to the first end of the cam 7. The clamping head part 12 is clamped with the sealing strip mounting frame 5. A movable screw 13 is also hinged to the first end of the cam 7. A limit seat 14 with a movable hole is arranged on the fixing plate 3. The movable screw 13 is arranged in the movable hole of the limit seat 14. The aperture of the movable hole is larger than the outer diameter of the movable screw 13. When the cam 7 is continuously moved back and forth, the movable screw 13 can swing in the movable hole. The movable screw 13 passes through the cam 7 and the clamping head part 12 at the same time, thereby connecting the cam 7 and the clamping head part 12.

[0034] According to an embodiment of the present application, a plurality of cover plates are arranged in sequence on the outer peripheral side of the box body 100. There is a gap between adjacent cover plates, and air flow can reach the first air inlet hole 101 and the second air inlet hole 201 through the gap between the cover plates and then enter the air flow passage cavity inside the box body 100. The cover plates include upper cover plates 15 located on both sides of the upper end of the box body 100, middle cover plates 16 located on both sides of the middle part of the box body 100, lower cover plates 17 located on both sides of the lower end of the box body 100, and two bottom cover plates 18 located below the bottom of the box body 100. The lower surfaces of the two bottom cover plates 18 respectively form an arc-shaped contour to match the circumferential contour of the dryer below the bottom cover plates 18. The upper cover plates 15, middle cover plates 16, lower cover plates 17, and bottom cover plates 18 can be connected to the outer peripheral side of the box body 100 through bolt-nut assemblies.

[0035] It should be noted that the above embodiments only represent the preferred implementation modes of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation to the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can be made, such as combining different features in each embodiment, etc., and these should all belong to the protection scope of the present application.

Claims

1. A high-speed paper web stabilizer with paper threading function, characterized in that: The high-speed paper web stabilizer with paper threading function comprises: A box body, wherein the box body has an airflow path cavity, a plurality of first air inlet holes are arranged on both sides of the box body in the width direction, the first air inlet holes connect the airflow path cavity with the outside of the box body, and an air outlet pipe is arranged on the box body, the air outlet pipe is used to connect the airflow path cavity to the air extraction device outside the box body; A rectifier plate is arranged at the lower part of the box body, the upper surface of the rectifier plate faces the inside of the box body, the lower surface of the rectifier plate faces the outside of the box body, and a plurality of second air inlet holes are arranged on the rectifier plate; A negative pressure regulating device, the negative pressure regulating device includes a linear telescopic drive mechanism connected to the box body and a regulating valve plate connected to the linear telescopic drive mechanism, the regulating valve plate is close to the rectifier plate and has an adjustment hole, and the linear telescopic drive mechanism can drive the regulating valve plate to move to change the ventilation area of ​​the second air inlet.

2. The high-speed paper web stabilizer with paper threading function according to claim 1, characterized in that: A paper feeding area is formed at one end of the box in the length direction, and the linear telescopic drive mechanism can drive the regulating valve plate to move between a first position and a second position along the length direction of the box, in the first position, all the second air inlet holes on the rectifier plate are not blocked by the regulating valve plate, in the second position, the second air inlet holes on the rectifier plate located in the paper feeding area are not blocked by the regulating valve plate, and at least a part of the second air inlet holes on the rectifier plate located outside the paper feeding area are blocked by the regulating valve plate.

3. The high-speed paper web stabilizer with paper threading function according to claim 2, characterized in that: The blocking includes the second air inlet being completely blocked or partially blocked.

4. The high-speed paper web stabilizer with paper threading function according to claim 2, characterized in that: The second air inlet hole is partially blocked when a portion of the second air inlet hole is blocked by a regulating valve plate surrounding the corresponding regulating hole, and a projection of another portion of the second air inlet hole on the regulating valve plate is located within the corresponding regulating hole.

5. The high-speed paper web stabilizer with paper threading function according to claim 2, characterized in that: The two sides of the rectifier plate in the width direction are connected to limiting sheet metals, and the two sides of the regulating valve plate in the width direction are limited between the corresponding limiting sheet metals and the rectifier plate. The linear telescopic drive mechanism can drive the regulating valve plate to move along the length direction of the regulating valve plate.

6. The high-speed paper web stabilizer with paper threading function according to any one of claims 1 to 5, characterized in that: The high-speed paper web stabilizer with paper threading function comprises an adjustable seal connected to the outer side of the box body, and the adjustable seal can always contact the drying cylinder felt located on the outer side of the box body.

7. The high-speed paper web stabilizer with paper threading function according to claim 6, characterized in that: The adjustable sealing member comprises a fixed plate, a movable compensation mechanism and a plurality of first sealing strips, wherein the fixed plate is detachably connected to the outer side of the box body, the movable compensation mechanism is movably connected to the fixed plate, and the plurality of first sealing strips are connected to a side of the movable compensation mechanism facing away from the box body, and movement of the movable compensation mechanism ensures that there is always a first sealing strip among the plurality of first sealing strips that contacts the drying cylinder felt located on the outer side of the box body.

8. The high-speed paper web stabilizer with paper threading function according to claim 7, characterized in that: The movable compensation mechanism includes a sealing strip mounting frame, a top support member and a cam, one end of the cam is hinged to the fixed plate, the other end of the cam is hinged to the sealing strip mounting frame, the top support member is installed on the sealing strip mounting frame, the lower end of the top support member faces the cam, and the multiple first sealing strips are installed on the side of the sealing strip mounting frame away from the box body.

9. The high-speed paper web stabilizer with paper threading function according to claim 8, characterized in that: The fixing plate is connected with a sealing plate, the end of the sealing plate is provided with a second sealing strip, the lower end of the sealing strip mounting frame abuts against the second sealing strip, the first end of the cam is connected with a clamping piece, and the clamping piece is clamped with the sealing strip mounting frame.

10. The high-speed paper web stabilizer with paper threading function according to any one of claims 1 to 5, characterized in that: A plurality of cover plates arranged in sequence are arranged on the outer peripheral side of the box body, and there are gaps between adjacent cover plates.

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