Drawing type paper breaking and blowing device

Abstract

A drawing type broken paper blowing device comprises a plate body assembly, a scraper blade, a connecting assembly, a guide rail provided with a sliding groove, a driving assembly and a blowing mechanism, the plate body assembly comprises an upper pressing plate and a lower pressing plate which define an adjusting space, and a plurality of scraper clamping blocks used for being inserted into the scraper blade in an inclined mode are arranged outside the adjusting space on the face, close to the lower pressing plate, of the upper pressing plate; the connecting assembly comprises a connecting shaft penetrating into the adjusting space, a plurality of supporting shafts arranged on the connecting shaft in a sleeving mode and a plurality of rolling wheels fixed to the lower pressing plate. The driving assembly comprises an opening air bag and a pressurizing air bag which are oppositely arranged on the two sides of the connecting shaft in the adjusting space, two air bag pressing pieces for fixing the two ends of the opening air bag and the two ends of the pressurizing air bag, a first air source connector communicated with the opening air bag, and a second air source connector communicated with the pressurizing air bag. The air blowing mechanism comprises an air bin fixed to the upper pressing plate, an air inlet pipe and an exhaust pipe, wherein the air inlet pipe and the exhaust pipe are communicated with an inner cavity of the air bin. A plurality of air blowing openings which are arranged at intervals in the length direction of the upper pressing plate and are communicated with the inner cavity of the air bin are formed in the outer surface of the air bin adjacent to the scraper blade.

Description

TECHNICAL FIELD

[0001] The utility model relates to paper machine technical field especially is related to a kind of pull-out type paper breaking blow device for cleaning paper machine paper breaking. BACKGROUND

[0002] Lower broke paper pool is used to handle the equipment of paper machine damaged paper, it receives and stores the broken paper (damaged paper) from paper machine, and is broken by the pulper installed in pool, and then the paper pulp is transported to other processes by suction pump for reprocessing or processing. The design of lower broke paper pool helps to improve resource utilization, reduce environmental pollution and ensure the continuity of production. With the continuous improvement of papermaking technology, the speed of paper machine is increasing faster and faster, and the paper needs to be peeled off from the roll surface of paper machine to avoid the phenomenon of paper winding cylinder caused by paper not being peeled off from the roll surface in time, which will cause paper winding cylinder, and even damage the dry net or roller, causing huge economic losses to the enterprise. Chinese invention patent (CN 102817270 A) discloses a kind of automatic paper breaking and anti-cylinder blocking device for drying part of paper machine, which blows gas from the horizontal direction and side of paper through horizontal blowing pipe and side blowing pipe, so that the paper tail of drying part is blown off completely in time after paper breaking of paper machine, to prevent the winding cylinder and cylinder blocking phenomenon caused by paper tail after paper breaking. However, the above-mentioned device is fixed in the interior of paper machine, when the device fails or is damaged, the operator needs to drill into the narrow space of paper machine to repair and replace the device. When the paper machine is temporarily stopped, the cylinder temperature is high, and the high temperature and narrow working space increase the difficulty of replacement and maintenance for the operator, so that the replacement and maintenance efficiency is low. In addition, in the above-mentioned device, the broken paper is blown off only by the airflow at the air pipe, and after the paper is blown off, the paper still exists the situation of winding cylinder, the paper breaking and cleaning effect is insufficient, and frequent stop is needed for cleaning, which reduces the production efficiency of paper. CONTENT OF UTILITY MODEL

[0003] Therefore, it is necessary to provide a kind of pull-out type paper breaking blow device which can be quickly moved out to the outside of paper machine for repair and replacement, reduce the difficulty of replacement and maintenance, and has good paper breaking and cleaning effect.

[0004] A kind of pull-out type paper breaking blow device, comprising:

[0005] Plate body assembly, the plate body assembly includes oppositely arranged upper pressing plate and lower pressing plate, the upper pressing plate and lower pressing plate form adjusting space, one side of the upper pressing plate close to the lower pressing plate is fixedly connected with a plurality of scraper clamping blocks outside the adjusting space, each scraper clamping block is sequentially arranged along the length direction of the upper pressing plate and surrounded by the upper pressing plate to form an insertion position;

[0006] The scraper blade is obliquely inserted into the insertion position and abuts against the inner side of the scraper clamp block and the edge of the upper pressing plate respectively, and the blade edge of the scraper blade is away from the scraper clamp block and forms a paper scraping part;

[0007] The connecting assembly comprises a connecting shaft penetrating into the adjusting space and extending along the length direction of the upper pressing plate and being rotationally connected with the upper pressing plate, a plurality of supporting shafts sleeved on the connecting shaft and fixedly connected with the lower pressing plate, and a plurality of rollers fixed on the side of the lower pressing plate away from the upper pressing plate, penetrating through the lower pressing plate and corresponding to the supporting shafts.

[0008] The guide rail is used for being fixed on the scraper frame of the papermaking machine, and a sliding groove for rolling cooperation with the rollers is formed in the guide rail.

[0009] The driving assembly comprises an open air bag and a pressurized air bag accommodated in the adjusting space and arranged opposite to each other on both sides of the connecting shaft, two air bag pressing members arranged opposite to each other at both ends of the adjusting space and sleeved on the connecting shaft and fixedly connecting both ends of the open air bag and the pressurized air bag, and a first air source connector for air suction or air release of the open air bag and a second air source connector for air suction or air release of the pressurized air bag arranged on the air bag pressing member.

[0010] The air blowing mechanism comprises an air warehouse fixed on the side of the upper pressing plate away from the adjusting space and extending along the length direction of the upper pressing plate, an air inlet pipe and an air outlet pipe arranged opposite to each other at both ends of the air warehouse and communicating with the inner cavity of the air warehouse, and a plurality of air blowing ports arranged along the length direction of the upper pressing plate and communicating with the inner cavity of the air warehouse are formed in the outer surface of the air warehouse adjacent to the paper scraping part.

[0011] In one embodiment, the air warehouse comprises a bottom plate fixed on the side of the upper pressing plate away from the adjusting space, a cover cap covering the bottom plate and forming an air chamber with the bottom plate, a first end cover arranged on one side of the air chamber and sealingly connected with the bottom plate and the cover cap, and a second end cover arranged on the other side of the air chamber and sealingly connected with the bottom plate and the cover cap, the bottom plate is sealingly connected with the cover cap, a plurality of grooves arranged along the length direction of the upper pressing plate are formed in the edge of the side of the bottom plate adjacent to the paper scraping part and away from the upper pressing plate, the cover cap is abutted with the bottom plate, and the grooves and the cover cap jointly form the air blowing ports, the air inlet pipe penetrates through the first end cover and communicates with the air chamber, and the air outlet pipe penetrates through the second end cover and communicates with the air chamber.

[0012] In one embodiment, the air blowing mechanism further comprises a standby air pipe penetrating through the first end cover and communicating with the air chamber; the hole diameter of the standby air pipe is different from the hole diameter of the air inlet pipe, or / and the cross-sectional shape of the standby air pipe is different from the cross-sectional shape of the air inlet pipe.

[0013] In one of the embodiments, the standby air pipe and the air inlet pipe are arranged side by side on the first end cover, the air blowing mechanism further comprises a partition plate arranged in the air chamber and sealingly connected with the bottom plate, the cover and the first end cover respectively, the length of the partition plate is less than the length of the bottom plate, the partition plate divides the area adjacent to the first end cover in the air chamber into a first air guide area and a second air guide area, the first air guide area and the second air guide area are both in communication with the air outlet pipe, the air inlet pipe is in communication with the first air guide area, and the standby air pipe is in communication with the second air guide area.

[0014] In one of the embodiments, a plurality of counterbores are formed in the cover, the air blowing mechanism further comprises a plurality of bolts corresponding to the counterbores and threadedly connected with the bottom plate and the upper pressing plate, and a sealing washer is sleeved on the head of each bolt and sealingly fitted with the inner surface of the counterbores.

[0015] In one of the embodiments, the connecting assembly further comprises a plurality of pressing plate fixing blocks sleeved on the connecting shaft and fixedly connected with the upper pressing plate respectively, and the connecting shaft is rotationally fitted with the pressing plate fixing blocks.

[0016] In one of the embodiments, the upper pressing plate is in the shape of a rectangular plate, the cross section of the lower pressing plate is in the shape of a U-shaped structure, the lower pressing plate comprises a first vertical part parallel to the upper pressing plate, a first horizontal part and a second horizontal part oppositely arranged on both sides of the first vertical part and fixedly connected with the first vertical part, and the first vertical part, the first horizontal part, the second horizontal part and the area of the upper pressing plate opposite to the first vertical part jointly enclose the adjusting space, and the first horizontal part is located on the side of the scraper clamping block.

[0017] In one of the embodiments, the fulcrum is in the shape of an n-shaped structure.

[0018] In one of the embodiments, the scraper clamping block is in the shape of a C-shaped structure with an opening facing the upper pressing plate, the scraper clamping block comprises a second vertical part parallel to the upper pressing plate, a third horizontal part and a fourth horizontal part oppositely arranged on both sides of the second vertical part and fixedly connected with the second vertical part, the third horizontal part is located below the fourth horizontal part and fixedly connected with the upper pressing plate, the width of the fourth horizontal part is less than the width of the third horizontal part, so that the fourth horizontal part and the upper pressing plate form the insertion position.

[0019] In one of the embodiments, a guide block is fixedly arranged on the end of the lower pressing plate away from the upper pressing plate, the guide block is located on the extension line of the arrangement direction of the rollers, and the outer contour shape of the guide block is adapted to the inner contour shape of the sliding groove.

[0020] The pull-out type paper breaking and blowing device provided by the utility model has the advantages that the roller is arranged on the lower pressing plate, and the guide rail that rolls with the roller is fixed on the scraper holder, when the device needs to be maintained and replaced, the device can be pulled out from the paper machine quickly as a whole by means of the rolling cooperation of the roller and the guide rail, the device can be maintained and replaced conveniently outside the paper machine, the difficulty of maintenance and replacement is reduced, and the efficiency of maintenance and replacement is improved; the broken paper blown by the blowing mechanism and closely adhered to the surface of the cylinder can be scraped off by the scraper blade, so that the broken paper is prevented from winding around the cylinder, the broken paper scraping effect is improved, the phenomenon of broken paper winding around the cylinder can be reduced or even avoided, the frequency of cleaning of the paper machine is reduced, and the production efficiency of paper is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of a pull-out type paper breaking and blowing device from one visual angle in an embodiment of the utility model;

[0022] Figure 2 It is a structure schematic view of a pull-out type paper breaking and blowing device (after the screw on the cover is removed) from another visual angle in an embodiment of the utility model;

[0023] Figure 3 It is a structure schematic view of a pull-out type paper breaking and blowing device from another visual angle in an embodiment of the utility model; Figure 2

[0024] Figure 4 It is a structure schematic view of a pull-out type paper breaking and blowing device from another visual angle in an embodiment of the utility model;

[0025] Figure 5 It is a structure schematic view of a pull-out type paper breaking and blowing device from another visual angle in an embodiment of the utility model;

[0026] Figure 6 It is a structure schematic view of a pull-out type paper breaking and blowing device from another visual angle in an embodiment of the utility model; DETAILED DESCRIPTION

[0027] In order to make the above objectives, characteristics and advantages of the utility model more apparent, comprehensible and easier to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings. In the following description, a lot of specific details are set forth in order to give a full and complete understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] Please combine Figure 1 with Figure 5 ​The utility model discloses a kind of pull-out type paper break blowing devices, which can be quickly moved out to the outside of paper machine for maintenance and replacement, reduce the difficulty of replacement and maintenance, and have good paper break removal effect. The pull-out type paper break blowing device comprises a plate body assembly 100, a scraper blade 200, a connecting assembly 300, a guide rail 400, a driving assembly 500 and a blowing mechanism 600. The plate body assembly 100, the connecting assembly 300 and the driving assembly 500 together form a clamp for clamping the scraper blade 200. The guide rail 400 is used to support the remaining components and provide a mounting portion for the pull-out type paper break blowing device inside the paper machine. By rolling the guide rail 400 and the rollers on the connecting assembly 300, the pull-out type paper break blowing device can be quickly pulled out of the paper machine or quickly inserted into the paper machine after replacement and maintenance. This transfers the replacement and maintenance site of the device to the outside of the paper machine, avoiding the inconvenience caused by the operator working in the narrow space of the paper machine and the impact of the high-temperature environment on the operator's health and work. This improves the efficiency of replacement and maintenance of the device. The blowing mechanism 600 is used to provide compressed air while the scraper blade 200 scrapes the paper break on the cylinder barrel. This allows the paper break scraped by the scraper blade 200 to quickly leave the surface of the cylinder under the blowing of the compressed air, improving the paper break removal efficiency. In addition, through the cooperation of the scraper blade 200 and the blowing mechanism 600, the scraper blade 200 can also scrape the paper break that is blown by the compressed air and tightly adheres to the surface of the cylinder barrel, improving the paper break removal effect.

[0029] Specifically, please refer to Figures 1-5 The plate body assembly 100 includes an upper pressing plate 110 and a lower pressing plate 120 arranged oppositely. An adjusting space 130 is formed between the upper pressing plate 110 and the lower pressing plate 120. The width of the upper pressing plate 110 is greater than the width of the lower pressing plate 120, and at least one side of the upper pressing plate 110 protrudes from the side of the lower pressing plate 120. A plurality of scraper clamping blocks 140 are fixedly connected to one side of the upper pressing plate 110 near the lower pressing plate 120 outside the adjusting space 130. That is, the scraper clamping blocks 140 are fixed to the part of the upper pressing plate 110 that protrudes from the lower pressing plate 120. The scraper clamping blocks 140 are sequentially arranged along the length direction of the upper pressing plate 110 and jointly form an insertion position with the upper pressing plate 110. The scraper blade 200 is obliquely inserted into the insertion position and abuts against the inner side of the scraper clamping block 140 and the edge of the upper pressing plate 110. The cutting edge of the scraper blade 200 is away from the scraper clamping block 140 and forms a paper scraping part. In this embodiment, the scraper blade 200 is obliquely inserted into the insertion position. While being positioned by the inner side of the scraper clamping block 140 and the edge of the upper pressing plate 110, the tip of the cutting edge of the scraper blade 200 actually contacts the cylinder in the process of scraping paper, reducing the acting area of the scraper blade 200 on the cylinder and increasing the pressure of the scraper blade 200 on the cylinder, thereby improving the scraping ability of the scraper blade 200 on the paper break on the cylinder.

[0030] The connecting assembly 300 comprises a connecting shaft 310 penetrating into the adjusting space 130 and extending along the length direction of the upper pressing plate 110 and being rotatably connected with the upper pressing plate 110, a plurality of supporting shafts 320 sleeved on the connecting shaft 310 and fixedly connected with the lower pressing plate 120, and a plurality of rollers 330 fixed on the side of the lower pressing plate 120 facing away from the upper pressing plate 110 and penetrating through the lower pressing plate 120 and being connected with the supporting shafts 320 one by one. It can be understood that the upper pressing plate 110 and the lower pressing plate 120 are rotatably connected with the connecting shaft, so that the upper pressing plate 110 and the lower pressing plate 120 swing relative to the connecting shaft under the action of the driving assembly 500 to adjust the angle of the doctor blade 200. The guide rail 400 is used to be fixed on the doctor blade frame of the papermaking machine, and the guide rail 400 is provided with sliding grooves 410 in rolling cooperation with the rollers 330, so that the sliding cooperation of the rollers 330 and the guide rail 400 can realize the sliding insertion or pulling out of the pull-out type paper cutting and blowing device, so as to reduce the disassembly difficulty of the pull-out type paper cutting and blowing device. The driving assembly 500 comprises an open air bag 510 and a pressurized air bag 520 accommodated in the adjusting space 130 and arranged opposite to each other on both sides of the connecting shaft 310, two air bag pressing members 530 arranged opposite to each other at both ends of the adjusting space 130 and sleeved on the connecting shaft 310 and fixedly connecting both ends of the open air bag 510 and the pressurized air bag 520, and the air bag pressing members 530 are provided with a first gas source connector 540 for sucking or discharging air to the open air bag 510 and a second gas source connector 550 for sucking or discharging air to the pressurized air bag 520. In this way, by charging or discharging air into the open air bag 510 and the pressurized air bag 520, the air pressure in the open air bag 510 and the pressurized air bag 520 can be adjusted, when the air pressure in the open air bag 510 and the air pressure in the pressurized air bag 520 are different, the pressure of the upper pressing plate 110 from the open air bag 510 and the pressurized air bag 520 is different, the upper pressing plate 110 is unevenly stressed, and then swings to adjust the included angle of the doctor blade 200.

[0031] The blowing mechanism 600 comprises a gas chamber 610 fixed on the upper press plate 110 and extending along the length direction of the upper press plate 110, an air inlet pipe 620 and an air outlet pipe 630 oppositely arranged at both ends of the gas chamber 610 and communicating with the inner cavity of the gas chamber 610, and a plurality of blowing ports 640 arranged along the length direction of the upper press plate 110 and communicating with the inner cavity of the gas chamber 610. Preferably, the blowing ports 640 are arranged adjacent to the part of the gas chamber 610 connected to the upper press plate 110, so as to shorten the distance between the blowing ports 640 and the scraping part of the scraper blade 200, and to keep a high flow rate of the compressed air discharged through the blowing ports 640 when reaching the scraping part, thereby improving the blowing effect on the broken paper. In addition, in the present embodiment, the blowing ports 640 are arranged to ensure that the compressed air discharged through the blowing ports 640 is aligned with the scraping part of the scraper blade 200, so that the blowing mechanism 600 can act together with the scraper blade 200 to maximize the cleaning effect on the broken paper.

[0032] The above-mentioned pulling type broken paper blowing device can be quickly pulled out from the inside of the paper machine as a whole by means of the rolling cooperation between the roller 330 and the guide rail 400 when maintenance and replacement of the device is required, so as to facilitate the spare maintenance and replacement of the device outside the paper machine, reduce the difficulty of replacement and maintenance, and improve the efficiency of replacement and maintenance. The broken paper can be scraped by the scraper blade 200 and the blowing mechanism 600, so that the broken paper blown by the blowing mechanism 600 and closely attached to the surface of the cylinder can be scraped by the scraper blade 200, to prevent the broken paper from winding around the cylinder, improve the broken paper cleaning effect, reduce or even avoid the occurrence of the broken paper winding phenomenon, reduce the number of paper machine shutdown cleaning, and improve the production efficiency of the paper.

[0033] In an embodiment, the upper pressing plate 110 is in a rectangular plate structure, and the lower pressing plate 120 is in a U-shaped structure in cross section. The lower pressing plate 120 includes a first vertical part parallel to the upper pressing plate 110, a first horizontal part and a second horizontal part oppositely arranged on both sides of the first vertical part and fixedly connected with the first vertical part. The first vertical part, the first horizontal part, the second horizontal part, and the area of the upper pressing plate 110 opposite to the first vertical part jointly form the adjusting space 130. The first horizontal part, the second horizontal part, the first vertical part, and the upper pressing plate 110 are collectively used to enclose the open air bag 510 and the pressurizing air bag 520, so as to limit the positions of the open air bag 510 and the pressurizing air bag 520, so that the open air bag 510 and the pressurizing air bag 520 are always in contact with the upper pressing plate 110 and the lower pressing plate 120, and the reliability of the angle adjustment of the doctor blade 200 is ensured. The first horizontal part is located on the side of the doctor blade holder 140, and the distance between the first horizontal part and the doctor blade holder 140 is greater than 0. In this way, when the upper pressing plate 110 drives the doctor blade 200 to swing to adjust the angle, the gap between the first horizontal part and the doctor blade holder 140 actually provides a relief space to prevent the doctor blade holder 140 from swinging to the first horizontal part under the drive of the upper pressing plate 110 and from interfering, thereby ensuring the smooth rotation of the upper pressing plate 110.

[0034] The doctor blade holder 140 is in a C-shaped structure with an opening facing the upper pressing plate 110. The doctor blade holder 140 includes a second vertical part parallel to the upper pressing plate 110, a third horizontal part and a fourth horizontal part oppositely arranged on both sides of the second vertical part and fixedly connected with the second vertical part. The third horizontal part is located below the fourth horizontal part and is fixedly connected with the upper pressing plate 110. The width of the fourth horizontal part is smaller than the width of the third horizontal part, so that a plug-in position is formed between the fourth horizontal part and the upper pressing plate 110, so as to insert the doctor blade 200. The doctor blade holder 140 can be integrally formed with the upper pressing plate 110, or can be screw-connected with the upper pressing plate 110. The guide rail 400 is screw-connected with the doctor blade holder, so as to improve the stability of the entire pull-out type paper cutting and air blowing device in the installation of the paper machine.

[0035] In an embodiment, the connecting assembly 300 further comprises a plurality of pressing plate fixing blocks 340 sleeved on the connecting shaft 310 and fixedly connected with the upper pressing plate 110 respectively, and the connecting shaft 310 is rotationally matched with the pressing plate fixing blocks 340. Further, a supporting shaft 320 is arranged between two adjacent pressing plate fixing blocks 340, the upper pressing plate 110 is rotationally arranged on the connecting shaft 310 through the pressing plate fixing blocks 340 which are equidistantly sleeved on the connecting shaft 310, and the lower pressing plate 120 is rotationally arranged on the connecting shaft 310 through the supporting shaft 320 which is equidistantly sleeved on the connecting shaft 310, so that the upper pressing plate 110 and the lower pressing plate 120 are uniformly stressed, the deflection of the upper pressing plate 110 and the lower pressing plate 120 during the angle adjustment of the doctor blade is avoided, and the reliability of the angle adjustment of the doctor blade is improved. The supporting shaft 320 has an n-shaped structure, the supporting shaft 320 comprises two vertically arranged vertical portions and a horizontal portion connected with the vertical portions, the connecting shaft 310 passes through the two vertical portions of the supporting shaft 320 and is rotationally matched with the supporting shaft 320, and the horizontal portion of the supporting shaft 320 is connected with the roller 330 through a screw passing through the lower pressing plate 120.

[0036] The end of the lower pressing plate 120 away from the upper pressing plate 110 is fixedly provided with a guide block 150, the guide block 150 is located on the extension line of the arrangement direction of the rollers 330, and the outer contour shape of the guide block 150 is adapted to the inner contour shape of the sliding groove 410. Further preferably, an end of the guide block 150 away from the roller 330 is provided with a guide portion, the width (the dimension of the guide portion along the width direction of the lower pressing plate 120) of the guide portion gradually increases along the direction close to the roller 330, so that the difficulty of inserting the guide block 150 into the sliding groove 410 of the guide rail 400 is reduced, and the installation difficulty of the pull-out type paper cutting and blowing device is further reduced. In the embodiment, by arranging the guide block 150, when the clamping device is installed, the guide block 150 is inserted into the sliding groove 410 and the lower pressing plate 120 is pushed, so that the roller 330 is embedded into the sliding groove 410, and the installation difficulty of the pull-out type paper cutting and blowing device is reduced. Preferably, the guide block 150 is fixed on the lower pressing plate 120 through a screw.

[0037] Please refer to Figures 1-6The air chamber 610 comprises a bottom plate 611 fixed on the upper pressing plate 110 and facing away from the adjusting space 130, a cover 612 covering the bottom plate 611 and forming an air chamber with the bottom plate 611, a first end cover 613 located on one side of the air chamber and sealingly connected with the bottom plate 611 and the cover 612, and a second end cover 614 located on the other side of the air chamber and sealingly connected with the bottom plate 611 and the cover 612. The bottom plate 611 is sealingly connected with the cover 612, and a plurality of grooves 615 are arranged on the edge of the bottom plate 611 adjacent to one side of the paper scraping part and facing away from the upper pressing plate 110 and are arranged along the length direction of the upper pressing plate 110. The part of the cover 612 abutting against the bottom plate 611 cooperates with the grooves 615 to form a blowing port 640. The air inlet pipe 620 penetrates through the first end cover 613 and is in communication with the air chamber, and the air outlet pipe 630 penetrates through the second end cover 614 and is in communication with the air chamber. In this embodiment, in order to avoid air leakage of the air chamber 610, the cooperation parts of the bottom plate 611 and the cover 612, the cooperation parts of the first end cover 613 and the bottom plate 611 and the cover 612, the cooperation parts of the second end cover 614 and the bottom plate 611 and the cover 612, the cooperation part of the air inlet pipe 620 and the first end cover 613, and the cooperation part of the air outlet pipe 630 and the second end cover 614 are all provided with sealing rubber pads, so as to prevent air leakage at the joints of the air chamber 610. In the case that the air outlet pipe 630 is blocked, the compressed air in the air chamber can only be discharged through the blowing port 640. Further preferably, the depth of the groove 615 is 1 / 10-1 / 5 of the thickness of the bottom plate 611. In this way, the blowing port 640 is actually a narrow slit penetrating through the side of the air chamber 610. When the compressed air in the air chamber blows out from the blowing port 640, the compressed air blown out through the blowing port 640 will generate a large blowing pressure due to the small diameter of the blowing port 640, thereby further improving the blowing effect on the cut paper.

[0038] In an embodiment, the blowing mechanism 600 further comprises a standby air pipe 650 penetrating through the first end cover 613 and being in communication with the air chamber. The diameter of the standby air pipe 650 is different from the diameter of the air inlet pipe 620, or / and the cross-sectional shape of the standby air pipe 650 is different from the cross-sectional shape of the air inlet pipe 620. In addition, the blowing mechanism 600 further comprises a plurality of adapters with different shapes and diameters, and the plurality of adapters are selectively installed on the standby air pipe 650. In this way, by providing the standby air pipe 650 and the adapters, when the compressed air is sent into the air chamber 610, the standby air pipe 650 or the air inlet pipe 620 can be selected according to the corresponding size and shape of the air pipe interface of the external air pressure device, so as to adapt to different types of air pressure devices, thereby expanding the use scenarios of the pull-type paper cutting and blowing device. It should be noted that, when the blowing mechanism 600 is in use, one of the standby air pipe 650 and the air inlet pipe 620 is penetrated, and the other is blocked by a sealing cover.

[0039] Further, the standby air pipe 650 and the air inlet pipe 620 are arranged side by side on the first end cover 613, the blowing mechanism 600 further comprises a partition plate 616 located in the air chamber and sealingly connected with the bottom plate 611, the cover 612 and the first end cover 613 respectively, the length of the partition plate 616 is less than the length of the bottom plate 611, the partition plate 616 divides the area adjacent to the first end cover 613 in the air chamber to form a first air guide area 617 and a second air guide area 618, the first air guide area 617 and the second air guide area 618 are both communicated with the air outlet pipe 630, the air inlet pipe 620 is communicated with the first air guide area 617, and the standby air pipe 650 is communicated with the second air guide area 618. Further, the air inlet pipe 620 is located on one side of the air chamber 610 adjacent to the blowing port 640. By arranging the partition plate 616 on the bottom plate 611, the air inlet area (the first air guide area 617) of the standby air pipe 650 and the air inlet area (the second air guide area 618) of the air inlet pipe 620 are separated, the compressed air introduced into the air chamber through the standby air pipe 650 can be guided along the second air guide area 618 to one end of the partition plate 616 away from the first end cover 613, so that the compressed air can be discharged through all the blowing ports 640 on the air chamber 610, in this way, the blowing mechanism 600 forms an "air curtain" in the length direction of the doctor blade 200, so as to improve the cleaning effect on the cut paper. In addition, by arranging the partition plate 616 on the bottom plate 611, the connection area of the bottom plate 611 and the cover 612 is further increased, which is beneficial to improving the stability of the structure of the air chamber 610.

[0040] In addition, a plurality of counterbores 619 are formed in the cover 612, and the blowing mechanism 600 further comprises a plurality of bolts corresponding to the counterbores 619 and threadedly connected with the bottom plate 611 and the upper pressing plate 110, and a sealing washer is sleeved on the head of each bolt and sealingly matched with the inner surface of the counterbores 619. In this way, when the upper pressing plate 110 is fixed to the bottom plate 611 by the bolts, the cover 612 is also screw-connected with the bottom plate 611, each screw forms a "column" located in the air chamber and supporting the cover 612, so as to improve the stability of the structure of the cover 612.

[0041] Any combination of the technical features in the above-described embodiments can be made, and in order to make the description simple, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist, they should be considered as the scope of the description.

[0042] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, some deformations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A pull-off paper cutting and blowing device, characterized by The utility model relates to a papermaking device, which comprises: a plate body assembly including oppositely arranged upper and lower pressing plates, an adjusting space formed between the upper and lower pressing plates, a plurality of scraper clamping blocks fixedly connected to one side of the upper pressing plate close to the lower pressing plate outside the adjusting space, each of the scraper clamping blocks sequentially arranged along the length direction of the upper pressing plate and jointly enclosing an insertion position with the upper pressing plate; a scraper blade obliquely inserted into the insertion position and abutting against the inner side of each of the scraper clamping blocks and the edge of the upper pressing plate, the cutting edge of the scraper blade being away from the scraper clamping blocks and forming a paper scraping part; a connecting assembly including a connecting shaft penetrating into the adjusting space and extending along the length direction of the upper pressing plate and being rotationally connected with the upper pressing plate, a plurality of supporting shafts sleeved on the connecting shaft and fixedly connected with the lower pressing plate, a plurality of rollers fixedly arranged on the side of the lower pressing plate away from the upper pressing plate and penetrating through the lower pressing plate and being connected with each of the supporting shafts one by one; a guide rail for being fixedly arranged on a scraper frame of a papermaking machine, the guide rail being provided with a plurality of sliding grooves for rolling cooperation with each of the rollers; a driving assembly including open air bags and pressurized air bags arranged opposite to each other on both sides of the connecting shaft and accommodated in the adjusting space, two air bag pressing members arranged opposite to each other at both ends of the adjusting space and sleeved on the connecting shaft and fixedly arranged at both ends of the open air bags and the pressurized air bags, the air bag pressing members being provided with a first air source connector for air suction or air release of the open air bags and a second air source connector for air suction or air release of the pressurized air bags; and an air blowing mechanism including an air warehouse fixedly arranged on the side of the upper pressing plate away from the adjusting space and extending along the length direction of the upper pressing plate, an air inlet pipe and an air outlet pipe arranged opposite to each other at both ends of the air warehouse and being in communication with the inner cavity of the air warehouse, the outer surface of the air warehouse being provided with a plurality of air blowing ports arranged along the length direction of the upper pressing plate at the position adjacent to the paper scraping part, the air blowing ports being in communication with the inner cavity of the air warehouse.

2. The pull-off paper cutting and blowing device according to claim 1, characterized in that The air warehouse includes a bottom plate fixedly arranged on the side of the upper pressing plate away from the adjusting space, a cover cap sleeved on the bottom plate and enclosing an air chamber with the bottom plate, a first end cover arranged on one side of the air chamber and being in sealing connection with the bottom plate and the cover cap, and a second end cover arranged on the other side of the air chamber and being in sealing connection with the bottom plate and the cover cap, the bottom plate being in sealing connection with the cover cap, the side edge of the bottom plate adjacent to the side of the paper scraping part and away from the upper pressing plate being provided with a plurality of grooves arranged along the length direction of the upper pressing plate, the part of the cover cap abutting against the bottom plate and the grooves jointly enclosing the air blowing ports, the air inlet pipe penetrating through the first end cover and being in communication with the air chamber, and the air outlet pipe penetrating through the second end cover and being in communication with the air chamber.

3. The pull-off paper cutting and blowing device according to claim 2, wherein The air blowing mechanism further includes a standby air pipe penetrating through the first end cover and being in communication with the air chamber, the hole diameter of the standby air pipe being different from the hole diameter of the air inlet pipe, or / and the cross-sectional shape of the standby air pipe being different from the cross-sectional shape of the air inlet pipe.

4. The pull-off paper cutting and blowing device according to claim 3, wherein The standby air pipe and the air inlet pipe are arranged side by side on the first end cover, the air blowing mechanism further comprises a partition plate arranged in the air chamber and sealingly connected with the bottom plate, the cover and the first end cover respectively, the length of the partition plate is less than the length of the bottom plate, the partition plate divides the area adjacent to the first end cover in the air chamber into a first air guide area and a second air guide area, the first air guide area and the second air guide area are both in communication with the air outlet pipe, the air inlet pipe is in communication with the first air guide area, and the standby air pipe is in communication with the second air guide area.

5. The pull-off paper cutting and blowing device according to claim 2, wherein The cover is provided with a plurality of counterbores, and the air blowing mechanism further comprises a plurality of bolts corresponding to the counterbores and threadedly connected with the bottom plate and the upper pressing plate, and a sealing washer is sleeved on the head of each bolt and sealingly matched with the inner surface of the counterbores.

6. The pull-off paper cutting and blowing device according to claim 1, wherein The connecting assembly further comprises a plurality of pressing plate fixing blocks fixedly connected with the upper pressing plate and sleeved on the connecting shaft.

7. The pull-off paper cutting and blowing device according to claim 1, wherein The upper pressing plate is in a rectangular plate structure, the cross section of the lower pressing plate is in a U-shaped structure, the lower pressing plate comprises a first vertical part parallel to the upper pressing plate, a first horizontal part and a second horizontal part oppositely arranged on both sides of the first vertical part and fixedly connected with the first vertical part, the first vertical part, the first horizontal part, the second horizontal part and the area of the upper pressing plate opposite to the first vertical part jointly form the adjusting space, and the first horizontal part is located on the side of the scraper clamping block.

8. The pull-off paper cutting and blowing device according to claim 1, wherein The fulcrum is in an n-shaped structure.

9. The pull-off paper cutting and blowing device according to claim 1, wherein The scraper clamping block is in a C-shaped structure with an opening facing the upper pressing plate, the scraper clamping block comprises a second vertical part parallel to the upper pressing plate, a third horizontal part and a fourth horizontal part oppositely arranged on both sides of the second vertical part and fixedly connected with the second vertical part, the third horizontal part is located below the fourth horizontal part and fixedly connected with the upper pressing plate, the width of the fourth horizontal part is less than the width of the third horizontal part, so that the fourth horizontal part and the upper pressing plate form the plug-in position.

10. The pull-off paper cutting and blowing device according to claim 1, wherein The end of the lower pressing plate away from the upper pressing plate is fixedly provided with a guide block, the guide block is located on the extension line of the arrangement direction of the rollers, and the outer contour shape of the guide block is adapted to the inner contour shape of the sliding groove.

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