Efficient production equipment and process for high-strength corrugated medium paper

Abstract

The invention relates to the technical field of corrugated medium paper production equipment, in particular to high-efficiency production equipment and process for high-strength corrugated medium paper, which comprises a beating tank, a stirring structure arranged on the inner wall of the beating tank and used for processing corrugated medium paper pulp with different fiber lengths, and a stirring mechanism arranged on the inner wall of the beating tank, the stirring structure comprises a rotary table rotationally mounted on the inner wall of the pulping tank and an extension strip used for smashing corrugated medium paper pulp fibers; the water injection structure is arranged at the upper end of the pulping tank and used for adding water into the pulping tank, and the water injection structure comprises a support fixedly installed at the upper end of the pulping tank and a spray head used for spraying water. According to the pulping machine, by arranging the stirring structure, when high-strength corrugated medium paper is produced, paper pulp with different fiber lengths can be processed as required by controlling the positions of the extension strips, so that the high-strength corrugated medium paper can be conveniently processed by using the paper pulp, and the processing efficiency and practicability of the pulping machine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of corrugated core paper production equipment, and in particular to a high-efficiency production equipment and process for high-strength corrugated core paper. Background Art

[0002] Corrugated core paper is the paper used for the middle corrugated layer of corrugated board. When processing corrugated core paper, the waste paper pulp and other raw materials are first pulped in a free state with the help of a pulping machine, and then the processed pulp is sent to the papermaking machine to make corrugated core paper with uniform fiber structure, specific quantity and excellent performance.

[0003] In the prior art, when processing long-fiber corrugated core paper, rotating blades are used to form vortices inside the pulper. The disturbance will cause the waste paper and clean water to form a slurry, thereby dissociating the fibers in the waste paper, ensuring the length of the fibers, and not cutting the fibers. This slurry can be used to process long-fiber corrugated core paper. When processing short-fiber corrugated core paper, multiple stirring rods are used to stir the slurry. During the stirring process, the stirring rods will break the fibers in the slurry, thereby processing short-fiber slurry, which can be used to process short-fiber corrugated core paper.

[0004] The above-mentioned and existing technologies have the following defects: the existing pulping machine can only prepare corrugated core paper pulp with a single fiber length, and cannot perform pulping according to the type of corrugated core paper required, resulting in a smaller scope of application of the pulping machine, thereby reducing the practicality of the pulping machine.

[0005] Therefore, an efficient production equipment and process for high-strength corrugated core paper are proposed. Summary of the Invention

[0006] The purpose of the present invention is to solve the problem that the pulper can only prepare corrugated core paper pulp with a single fiber length and cannot be used to pulp according to the type of corrugated core paper, resulting in a small scope of application of the pulper, and to propose an efficient production equipment and process for high-strength corrugated core paper.

[0007] To achieve the above-mentioned object, the present invention adopts the following technical solution: an efficient production device and process for high-strength corrugated medium paper, comprising a beating tank, the lower surface of which is fixedly connected to a valve pipe, and further comprising:

[0008] A stirring structure provided on the inner wall of the beating tank for processing corrugated paper pulp with different fiber lengths, the stirring structure comprising a turntable rotatably mounted on the inner wall of the beating tank and an extension bar for breaking up the corrugated paper pulp fibers;

[0009] A water injection structure is provided at the upper end of the beating tank and is used to add water into the beating tank. The water injection structure includes a bracket fixedly installed at the upper end of the beating tank and a nozzle for sprinkling water;

[0010] A spoiler structure is arranged on the outer circumferential surface of the beating tank to improve the beating effect of the corrugated core paper pulp. The spoiler structure includes a second electric push rod fixedly installed on the outer circumferential surface of the beating tank and several spoilers for interfering with the flow path of the corrugated core paper pulp.

[0011] The effects achieved by the above components are: by setting up a stirring structure, when producing high-strength corrugated core paper, by controlling the position of the extension strip, pulp with different fiber lengths can be processed according to needs, thereby facilitating the use of pulp to process high-strength corrugated core paper, and improving the processing efficiency and practicality of the pulper. By setting up a water injection structure, when water is injected during the pulping process, the nozzle can discharge water from different angles, thereby facilitating the uniform sprinkling of water, and then facilitating the rapid and uniform stirring and mixing of the pulp. By setting up a spoiler structure, when preparing short-fiber pulp, the spoiler can disturb the pulp flowing along the inner wall of the pulping tank, thereby improving the pulping effect and efficiency.

[0012] Preferably, the circumferential surface of the turntable is fixedly equipped with blades, the lower surface of the beating tank is fixedly equipped with a driving motor, the output end of the driving motor is fixedly connected to the turntable, the upper surface of the turntable is fixedly equipped with a transmission cylinder, two rotating shafts are rotatably connected in the transmission cylinder, the extension bar is fixedly installed on the circumferential surface of the rotating shaft, the circumferential surface of the transmission cylinder is provided with a clearance groove adapted to the extension bar, the upper end of the rotating shaft is fixedly equipped with a half gear, the inner wall of the transmission cylinder is fixedly equipped with a servo motor, the output end of the servo motor is fixedly equipped with a driving gear meshing with the half gears, and the transmission cylinder has a cylindrical structure.

[0013] The effect achieved by the above components is: when it is necessary to process long-fiber pulp, the drive motor is turned on, and the rotation of the output end of the drive motor will drive the turntable to rotate, and the turntable will drive the blades to rotate, and the blades will drive the waste paper and clean water to form a vortex. Since the extension strip is located in the give way groove and the transmission cylinder is a cylindrical structure, the transmission cylinder and the extension strip will not break the fibers during this process. When the fibers are dissociated, long-fiber pulp can be processed. When short-fiber pulp needs to be processed, the servo motor is turned on, and the rotation of the output end of the servo motor will drive the driving gear to rotate, and the driving gear will drive the half gear to rotate. The rotating shaft follows the half gear to drive the extension strip out of the give way groove. When the drive motor is working, the turntable will drive the transmission cylinder to rotate, and the transmission cylinder will drive the extension strip to move. After the extension strip contacts the fibers in the pulp, the fibers can be broken, thereby preparing short-fiber pulp, which makes it convenient to use fibers of different lengths to process high-strength corrugated core paper.

[0014] Preferably, a U-shaped plate is fixedly mounted on the upper surface of the transmission cylinder, a first electric push rod is fixedly mounted on the upper surface of the U-shaped plate, a pressure ring is fixedly mounted on the output end of the first electric push rod, and a friction ring is fixedly mounted on the lower surface of the pressure ring.

[0015] The effect achieved by the above components is: when the output end of the first electric push rod is controlled to extend, the pressure ring will move downward so that the friction ring will rest against the surface of the driving gear, thereby limiting the position of the driving gear. The friction ring can increase the friction between the pressure ring and the driving gear.

[0016] Preferably, a guide rod is slidably passed through the U-shaped plate, and the guide rod is fixedly connected to the pressure ring.

[0017] The effects achieved by the above components are as follows: the movement of the pressure ring drives the guide rod to slide along the U-shaped plate, the guide rod can limit the movement path of the pressure ring and transmit the axial force exerted on the pressure ring to the U-shaped plate.

[0018] Preferably, a rotating rod is rotatably connected in the bracket, a hollow plate is fixedly assembled on the circumferential surface of the rotating rod, a water inlet pipe is fixedly connected to the surface of the hollow plate, and the nozzle is fixedly connected and installed on the surface of the hollow plate, and the vertical section of the hollow plate is "V" shaped.

[0019] The effect achieved by the above components is: the water inlet pipe is connected to the external water source, clean water will enter the hollow tube through the water inlet pipe, and then the nozzle can discharge the water from different angles, so as to facilitate the even sprinkling of water.

[0020] Preferably, a connecting rod is fixedly mounted on the surface of the hollow plate, and a plurality of push plates are fixedly mounted on the circumferential surface of the transmission cylinder, and the push plates are inclined to the horizontal plane.

[0021] The effect achieved by the above components is: during the process of the transmission cylinder rotating and slurrying, the push plate will move with the transmission cylinder. When the push plate contacts the connecting rod, it will squeeze the connecting rod. The connecting rod will drive the hollow plate to rotate around the axis of the rotating rod. The hollow plate will drive the nozzle to move, thereby changing the angle of the nozzle. Therefore, when injecting water, the water discharge angle can be further adjusted, thereby injecting water more evenly.

[0022] Preferably, a torsion spring is sleeved on the circumferential surface of the rotating rod, and two ends of the torsion spring are fixedly connected to the bracket and the rotating rod respectively.

[0023] The effect achieved by the above components is that the rotation of the rotating rod will twist the torsion spring. When the push plate is out of contact with the connecting rod, the torsion spring will use its own torque to drive the rotating rod to rotate in the opposite direction, thereby driving the hollow plate to rotate and quickly reset the hollow plate.

[0024] Preferably, the output end of the second electric push rod is fixedly equipped with a connecting plate, the spoiler is fixedly installed on the surface of the connecting plate, the spoiler slides through the pulping tank, and the pulping tank is detachably mounted with a protective cover relative to the connecting plate.

[0025] The effect achieved by the above components is: when preparing short fiber pulp, the output end of the second electric push rod is controlled to contract, and the connecting plate will drive the spoiler to pass through the pulping tank. The spoiler can disturb the pulp flowing along the inner wall of the pulping tank, thereby improving the beating effect and efficiency. The protective cover can block the connecting plate and other components to prevent the connecting plate from being obstructed by external objects during movement.

[0026] Preferably, a screw is fixedly mounted on the outer circumferential surface of the beating tank, a positioning ring is threadedly connected to the circumferential surface of the screw, and the positioning ring is located between the connecting plate and the beating tank.

[0027] The effect achieved by the above components is that the connecting plate will contact the positioning ring when it moves, and the positioning ring can limit the moving distance of the connecting plate, thereby limiting the stroke of the second electric push rod and improving the accuracy of the spoiler extending out of the mixing tank.

[0028] The efficient production process of high-strength corrugated core paper includes the following steps:

[0029] S1. Raw material pretreatment: Prepare long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) using a pulping machine, mix the long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) in a mass ratio of 3:2:5, add the mixture to a mixer, and mix at a speed of 300-400 r / min for 15-20 min to preliminarily disperse the raw materials into a fiber suspension;

[0030] S2. Chemical pretreatment: adding sodium hydroxide solution (0.5%-1% of the total weight of the raw materials) to the fiber suspension, stirring evenly, and then heat-treating at 50-60°C for 30-40 minutes to remove impurities and part of the lignin on the fiber surface and improve the reaction activity of the fiber;

[0031] S3. Optimization of pulping process: The chemically pretreated fiber suspension is transported to the refiner for refining treatment, and the beating degree is controlled at 30-35°SR. The refining process adopts a segmented refining method. The first segment refining pressure is 0.1-0.15MPa and the time is 10-15min; the second segment refining pressure is 0.2-0.25MPa and the time is 8-12min, so as to avoid excessive fiber cutting, promote fiber separation and enhance the bonding force between fibers.

[0032] S4. Adding reinforcing agent: Add 1%-2% of the total mass of the raw materials to the fiber suspension after refining, and add 0.5%-1% of the wet strength agent (PAE resin). Stir thoroughly to make the reinforcing agent evenly dispersed between the fibers to further improve the strength of the corrugated core paper.

[0033] S5. Improvement of papermaking process: The fiber suspension after adding the reinforcing agent is transported to the paper machine for papermaking. During the papermaking process, a vacuum suction device is used for dehydration, and the vacuum degree is controlled at 40-60kPa to improve the dehydration efficiency. At the same time, a double-roll press is used in the pressing section, and the pressing pressure is controlled at 0.8-1.2MPa to make the corrugated core paper more dense and improve the strength of the corrugated core paper.

[0034] S6. Surface sizing: Surface sizing is performed on the corrugated paper after papermaking. The sizing liquid is a starch glue liquid with a mass fraction of 3%-5%, and the sizing amount is controlled at 8-12g / m 2 , improve the surface strength and water resistance of corrugated core paper;

[0035] S7. Drying treatment: The corrugated core paper after gluing is sent to the drying section for drying. The drying temperature adopts a gradient heating method. The first section drying temperature is 80-90℃, and the time is 5-8min; the second section drying temperature is 100-110℃, and the time is 3-5min; the third section drying temperature is 120-130℃, and the time is 2-3min. The moisture content of the corrugated core paper is controlled at 8%-10% to ensure the strength and flexibility of the corrugated core paper.

[0036] Compared with the prior art, the advantages and positive effects of the present invention are:

[0037] 1. In the present invention, by setting a stirring structure, when producing high-strength corrugated core paper, by controlling the position of the extension strip, pulp with different fiber lengths can be processed as needed, thereby facilitating the use of pulp to process high-strength corrugated core paper and improving the processing efficiency and practicality of the pulper.

[0038] 2. In the present invention, by providing a water injection structure, when water is injected during the pulping process, the nozzle can discharge water from different angles, thereby facilitating uniform water sprinkling, and further facilitating rapid and uniform stirring and mixing of the pulp.

[0039] 3. In the present invention, by providing a spoiler structure, when preparing short fiber pulp, the spoiler can disturb the pulp flowing along the inner wall of the beating tank, thereby improving the beating effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 This is a schematic diagram of the split structure of the beating tank of the present invention;

[0042] Figure 3 This is a schematic diagram of the cross-sectional structure of the beating tank of the present invention;

[0043] Figure 4This is a schematic diagram of the partial structure of the beating tank of the present invention;

[0044] Figure 5 This is a schematic diagram of the split structure of the transmission cylinder of the present invention;

[0045] Figure 6 This is a structural diagram of the U-shaped plate of the present invention;

[0046] Figure 7 Schematic diagram of the structure of the bracket of the present invention;

[0047] Figure 8 This is a structural diagram of the second electric push rod of the present invention.

[0048] Legend: 1. Beating tank; 2. Valve tube; 3. Stirring structure; 301. Turntable; 302. Blade; 303. Driving motor; 304. Transmission cylinder; 305. Rotating shaft; 306. Extension bar; 307. Half gear; 308. Servo motor; 309. Driving gear; 310. U-shaped plate; 311. First electric push rod; 312. Pressure ring; 313. Guide rod; 314. Friction ring; 315. Give way groove; 4. Water injection structure; 41. Bracket; 42. Rotating rod; 43. Hollow plate; 44. Nozzle; 45. Water inlet pipe; 46. Connecting rod; 47. Push plate; 48. Torsion spring; 5. Spoiler structure; 51. Second electric push rod; 52. Connecting plate; 53. Spoiler; 54. Protective cover; 55. Screw; 56. Positioning ring. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] like Figures 1-8As shown, the present invention provides an efficient production equipment and process for high-strength corrugated core paper, including a pulping tank 1, the lower surface of which is fixedly connected to a valve tube 2, and also including: a stirring structure 3 arranged on the inner wall of the pulping tank 1 for processing corrugated core paper pulp with different fiber lengths, the stirring structure 3 including a turntable 301 rotatably installed on the inner wall of the pulping tank 1, and an extension bar 306 for breaking up the corrugated core paper pulp fibers; a water injection structure 4 arranged at the upper end of the pulping tank 1 for adding water into the pulping tank 1, the water injection structure 4 including a bracket 41 fixedly installed on the upper end of the pulping tank 1, and a nozzle 44 for sprinkling water; a spoiler structure 5 arranged on the outer circumferential surface of the pulping tank 1 for improving the pulping effect of the corrugated core paper pulp, the spoiler structure 5 including a second electric push rod 51 fixedly installed on the outer circumferential surface of the pulping tank 1, and a plurality of spoilers 53 for interfering with the flow path of the corrugated core paper pulp.

[0052] The circumferential surface of the turntable 301 is fixedly equipped with blades 302, and the lower surface of the pulping tank 1 is fixedly equipped with a driving motor 303. The output end of the driving motor 303 is fixedly connected to the turntable 301, and the upper surface of the turntable 301 is fixedly equipped with a transmission cylinder 304. Two rotating shafts 305 are rotatably connected in the transmission cylinder 304. The extension bar 306 is fixedly installed on the circumferential surface of the rotating shaft 305. The circumferential surface of the transmission cylinder 304 is provided with a makeshift groove 315 that is adapted to the extension bar 306. The upper end of the rotating shaft 305 is fixedly equipped with a half gear 307, and the inner wall of the transmission cylinder 304 is fixedly equipped with a servo motor 308. The output end of the servo motor 308 is fixedly equipped with a driving gear 309 that meshes with the half gear 307. The transmission cylinder 304 has a cylindrical structure. When long fiber pulp needs to be processed, the driving motor 303 is turned on, and the rotation of the output end of the driving motor 303 will drive the turntable 301 to rotate, and the turntable 301 will drive the blades 302 to rotate. When the drive cylinder 304 rotates, the blades 302 will drive the waste paper and clean water to form a vortex. Since the extension bar 306 is located in the yield groove 315 and the transmission cylinder 304 is a cylindrical structure, the transmission cylinder 304 and the extension bar 306 will not break the fibers during this process. When the fibers are dissociated, long-fiber pulp can be processed. When short-fiber pulp needs to be processed, the servo motor 308 is turned on. The output end of the servo motor 308 rotates to drive the driving gear 309 to rotate, and the driving gear 309 drives the half gear 307 to rotate. The rotating shaft 305 follows the half gear 307 to drive the extension bar 306 to rotate out of the yield groove 315. When the drive motor 303 is working, the turntable 301 drives the transmission cylinder 304 to rotate, and the transmission cylinder 304 drives the extension bar 306 to move. After the extension bar 306 contacts the fibers in the pulp, the fibers can be broken, thereby preparing short-fiber pulp, which makes it convenient to use fibers of different lengths to process high-strength corrugated core paper.

[0053] The upper surface of the transmission cylinder 304 is fixedly equipped with a U-shaped plate 310, and the upper surface of the U-shaped plate 310 is fixedly equipped with a first electric push rod 311. The output end of the first electric push rod 311 is fixedly equipped with a pressure ring 312, and the lower surface of the pressure ring 312 is fixedly equipped with a friction ring 314. To control the extension of the output end of the first electric push rod 311, the pressure ring 312 will move downward so that the friction ring 314 will rest against the surface of the driving gear 309, thereby limiting the position of the driving gear 309. The friction ring 314 can increase the friction force between the pressure ring 312 and the driving gear 309. A guide rod 313 slides through the U-shaped plate 310, and the guide rod 313 is fixedly connected to the pressure ring 312. The movement of the pressure ring 312 will drive the guide rod 313 to slide along the U-shaped plate 310. The guide rod 313 can limit the moving path of the pressure ring 312 and transmit the axial force acting on the pressure ring 312 to the U-shaped plate 310.

[0054] A rotating rod 42 is rotatably connected in the bracket 41, and a hollow plate 43 is fixedly installed on the circumferential surface of the rotating rod 42. The surface of the hollow plate 43 is fixedly connected with a water inlet pipe 45, and a nozzle 44 is fixedly connected and installed on the surface of the hollow plate 43. The vertical section of the hollow plate 43 is "V"-shaped. The water inlet pipe 45 is connected to the external water source, and the clean water will enter the hollow pipe through the water inlet pipe 45. Then the nozzle 44 can discharge the water from different angles, so that the water can be evenly sprinkled. The surface of the hollow plate 43 is fixedly equipped with a connecting rod 46, and the circumferential surface of the transmission cylinder 304 is fixedly equipped with a number of push plates 47. The push plates 47 are inclined to the horizontal plane. During the process of the transmission cylinder 304 rotating to make pulp, the push plates 47 will follow the transmission cylinder 304. 4 moves. When the push plate 47 contacts the connecting rod 46, it squeezes the connecting rod 46. The connecting rod 46 drives the hollow plate 43 to rotate around the axis of the rotating rod 42. The hollow plate 43 drives the nozzle 44 to move, thereby changing the angle of the nozzle 44. Therefore, when injecting water, the discharge angle of water can be further adjusted, thereby injecting water more evenly. The circumferential surface of the rotating rod 42 is covered with a torsion spring 48. The two ends of the torsion spring 48 are respectively fixedly connected to the bracket 41 and the rotating rod 42. The rotation of the rotating rod 42 will twist the torsion spring 48. When the push plate 47 is out of contact with the connecting rod 46, the torsion spring 48 will use its own torque to drive the rotating rod 42 to rotate in the opposite direction, thereby driving the hollow plate 43 to rotate and quickly reset the hollow plate 43.

[0055] The output end of the second electric push rod 51 is fixedly equipped with a connecting plate 52, and a spoiler 53 is fixedly installed on the surface of the connecting plate 52. The spoiler 53 slides through the beating tank 1, and the beating tank 1 is detachably installed with a protective cover 54 relative to the connecting plate 52. When preparing short fiber pulp, the output end of the second electric push rod 51 is controlled to contract, and the connecting plate 52 will drive the spoiler 53 to pass through the beating tank 1. The spoiler 53 can disturb the pulp flowing along the inner wall of the beating tank 1, thereby improving the beating effect and efficiency. The protective cover 54 It can shield the connecting plate 52 and other components to prevent the connecting plate 52 from being obstructed by external objects during movement. The outer circumferential surface of the pulping tank 1 is fixedly equipped with a screw rod 55, and the circumferential surface of the screw rod 55 is threadedly connected with a positioning ring 56. The positioning ring 56 is located between the connecting plate 52 and the pulping tank 1. The connecting plate 52 moves and contacts with the positioning ring 56. The positioning ring 56 can limit the moving distance of the connecting plate 52, thereby limiting the stroke of the second electric push rod 51, and improving the accuracy of the spoiler 53 extending out of the mixing tank.

[0056] The efficient production process of high-strength corrugated core paper includes the following steps:

[0057] S1. Raw material pretreatment: Prepare long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) using a pulping machine, mix the long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) in a mass ratio of 3:2:5, add the mixture to a mixer, and mix at a speed of 300-400 r / min for 15-20 min to preliminarily disperse the raw materials into a fiber suspension;

[0058] S2. Chemical pretreatment: adding sodium hydroxide solution (0.5%-1% of the total weight of the raw materials) to the fiber suspension, stirring evenly, and then heat-treating at 50-60°C for 30-40 minutes to remove impurities and part of the lignin on the fiber surface and improve the reaction activity of the fiber;

[0059] S3. Optimization of pulping process: The chemically pretreated fiber suspension is transported to the refiner for refining treatment, and the beating degree is controlled at 30-35°SR. The refining process adopts a segmented refining method. The first segment refining pressure is 0.1-0.15MPa and the time is 10-15min; the second segment refining pressure is 0.2-0.25MPa and the time is 8-12min, so as to avoid excessive fiber cutting, promote fiber separation and enhance the bonding force between fibers.

[0060] S4. Adding reinforcing agent: Add 1%-2% of the total mass of the raw materials to the fiber suspension after refining, and add 0.5%-1% of the wet strength agent (PAE resin). Stir thoroughly to make the reinforcing agent evenly dispersed between the fibers to further improve the strength of the corrugated core paper.

[0061] S5. Improvement of papermaking process: The fiber suspension after adding the reinforcing agent is transported to the paper machine for papermaking. During the papermaking process, a vacuum suction device is used for dehydration, and the vacuum degree is controlled at 40-60kPa to improve the dehydration efficiency. At the same time, a double-roll press is used in the pressing section, and the pressing pressure is controlled at 0.8-1.2MPa to make the corrugated core paper more dense and improve the strength of the corrugated core paper.

[0062] S6. Surface sizing: Surface sizing is performed on the corrugated paper after papermaking. The sizing liquid is a starch glue liquid with a mass fraction of 3%-5%, and the sizing amount is controlled at 8-12g / m 2 , improve the surface strength and water resistance of corrugated core paper;

[0063] S7. Drying treatment: The corrugated core paper after gluing is sent to the drying section for drying. The drying temperature adopts a gradient heating method. The first section drying temperature is 80-90℃, and the time is 5-8min; the second section drying temperature is 100-110℃, and the time is 3-5min; the third section drying temperature is 120-130℃, and the time is 2-3min. The moisture content of the corrugated core paper is controlled at 8%-10% to ensure the strength and flexibility of the corrugated core paper.

[0064] Its overall working principle is that when producing high-strength corrugated core paper, waste paper and other raw materials are put into the beating tube, and then the water inlet pipe 45 is connected to the external water source, and clean water enters the hollow tube through the water inlet pipe 45, and then the nozzle 44 can discharge the water from different angles, so that the water can be evenly sprinkled. After adding an appropriate amount of clean water, the water source is disconnected. When long-fiber pulp needs to be processed, the drive motor 303 is turned on, and the rotation of the output end of the drive motor 303 drives the turntable 301 to rotate, and the turntable 301 drives The blades 302 rotate, and the blades 302 drive the waste paper and clean water to form a vortex. Since the extension bar 306 is located in the clearance groove 315 and the transmission cylinder 304 is a cylindrical structure, the transmission cylinder 304 and the extension bar 306 will not break the fibers during this process. After the fibers are dissociated, long-fiber pulp can be processed. When short-fiber pulp needs to be processed, the servo motor 308 is turned on, and the output end of the servo motor 308 rotates to drive the driving gear 309 to rotate, and the driving gear 309 drives the half gear 308 to rotate. 07 rotates, the rotating shaft 305 follows the half gear 307 to drive the extension bar 306 to rotate out of the give way groove 315, and then controls the output end of the first electric push rod 311 to extend, the pressure ring 312 will move downward to make the friction ring 314 press against the surface of the driving gear 309, thereby limiting the position of the driving gear 309, and the friction ring 314 can increase the friction between the pressure ring 312 and the driving gear 309. The movement of the pressure ring 312 will drive the guide rod 313 to slide along the U-shaped plate 310, and the guide rod 313 can The moving path of the pressure ring 312 is limited, and the axial force acting on the pressure ring 312 is transmitted to the U-shaped plate 310. When the drive motor 303 is working, the turntable 301 will drive the transmission cylinder 304 to rotate, and the transmission cylinder 304 will drive the extension bar 306 to move. After the extension bar 306 contacts the fibers in the pulp, the fibers can be broken, thereby preparing short-fiber pulp, and then facilitating the use of fibers of different lengths to process high-strength corrugated core paper. After processing, the pulp is discharged from the pulping tank 1 through the valve pipe 2.

[0065] When the driving cylinder 304 rotates to make pulp, the pushing plate 47 will follow the movement of the driving cylinder 304. When the pushing plate 47 contacts the connecting rod 46, it will squeeze the connecting rod 46. The connecting rod 46 will drive the hollow plate 43 to rotate around the axis of the rotating rod 42. The hollow plate 43 will drive the nozzle 44 to move, thereby changing the angle of the nozzle 44. Therefore, when injecting water, the discharge angle of water can be further adjusted, thereby injecting water more evenly. The rotation of the rotating rod 42 will twist the torsion spring 48. When the pushing plate 47 is out of contact with the connecting rod 46, the torsion spring 48 will use its own torsion force to drive the rotating rod 42 to rotate in the opposite direction, thereby driving the hollow plate 43 to rotate and quickly reset the hollow plate 43. At the same time, the hollow plate 43 with a "V" shape in the vertical cross section can limit the direction of the nozzle 44. When the pulp is discharged, the discharged clean water can flush the give way groove 315, thereby facilitating the subsequent rotation of the extension bar 306 back to the give way groove 315.

[0066] When preparing short fiber pulp, the output end of the second electric push rod 51 is controlled to contract, and the connecting plate 52 will drive the spoiler 53 to pass through the pulping tank 1. The spoiler 53 can disturb the pulp flowing along the inner wall of the pulping tank 1, thereby improving the pulping effect and efficiency. The movement of the connecting plate 52 will contact the positioning ring 56, and the positioning ring 56 can limit the moving distance of the connecting plate 52, thereby limiting the stroke of the second electric push rod 51, and improving the accuracy of the spoiler 53 extending out of the mixing tank. When the position of the positioning ring 56 needs to be adjusted, the protective cover 54 is removed, and then the positioning ring 56 is rotated. The positioning ring 56 will move along the circumferential surface of the screw rod 55, thereby adjusting the distance from the pulping tank 1, thereby improving the flexibility during use. After the adjustment is completed, the protective cover 54 is reinstalled on the outer circumference of the pulping tank 1. The protective cover 54 can cover the connecting plate 52 and other components to prevent the connecting plate 52 from being obstructed by external objects during movement.

[0067] The above description is merely a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any person skilled in the art may utilize the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change, and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An efficient production device and process for high-strength corrugated medium paper, comprising a beating tank (1), characterized in that: The lower surface of the beating tank (1) is fixedly connected to a valve pipe (2), and further comprises: a stirring structure (3) disposed on the inner wall of the beating tank (1) for processing corrugated paper pulp with different fiber lengths, the stirring structure (3) comprising a turntable (301) rotatably mounted on the inner wall of the beating tank (1) and an extension bar (306) for breaking up the corrugated paper pulp fibers; a water injection structure (4) provided at the upper end of the beating tank (1) for adding water into the beating tank (1), the water injection structure (4) comprising a bracket (41) fixedly mounted at the upper end of the beating tank (1) and a nozzle (44) for sprinkling water; A flow-disturbing structure (5) is provided on the outer circumferential surface of the beating tank (1) for improving the beating effect of corrugated core paper pulp, wherein the flow-disturbing structure (5) comprises a second electric push rod (51) fixedly mounted on the outer circumferential surface of the beating tank (1) and a plurality of spoilers (53) for interfering with the flow path of the corrugated core paper pulp.

2. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 1, characterized in that: The circumferential surface of the turntable (301) is fixedly equipped with blades (302), the lower surface of the beating tank (1) is fixedly equipped with a driving motor (303), the output end of the driving motor (303) is fixedly connected to the turntable (301), the upper surface of the turntable (301) is fixedly equipped with a transmission cylinder (304), two rotating shafts (305) are rotatably connected in the transmission cylinder (304), and the extension bar (306) is fixedly mounted on the rotating shaft (305). The circumferential surface of the transmission cylinder (304) is provided with a clearance groove (315) adapted to the extension bar (306); the upper end of the rotating shaft (305) is fixedly equipped with a half gear (307); the inner wall of the transmission cylinder (304) is fixedly equipped with a servo motor (308); the output end of the servo motor (308) is fixedly equipped with a driving gear (309) meshing with the half gear (307); and the transmission cylinder (304) is a cylindrical structure.

3. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 2, characterized in that: A U-shaped plate (310) is fixedly mounted on the upper surface of the transmission cylinder (304), a first electric push rod (311) is fixedly mounted on the upper surface of the U-shaped plate (310), a pressure ring (312) is fixedly mounted on the output end of the first electric push rod (311), and a friction ring (314) is fixedly mounted on the lower surface of the pressure ring (312).

4. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 3, characterized in that: A guide rod (313) is slidably inserted into the U-shaped plate (310), and the guide rod (313) is fixedly connected to the pressure ring (312).

5. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 2, characterized in that: A rotating rod (42) is rotatably connected inside the bracket (41), and a hollow plate (43) is fixedly assembled on the circumferential surface of the rotating rod (42). A water inlet pipe (45) is fixedly connected to the surface of the hollow plate (43). The nozzle (44) is fixedly connected and installed on the surface of the hollow plate (43), and the vertical cross-section of the hollow plate (43) is "V"-shaped.

6. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 5, characterized in that: A connecting rod (46) is fixedly mounted on the surface of the hollow plate (43), and a plurality of push plates (47) are fixedly mounted on the circumferential surface of the transmission cylinder (304), wherein the push plates (47) are inclined to a horizontal plane.

7. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 6, characterized in that: The circumferential surface of the rotating rod (42) is covered with a torsion spring (48), and the two ends of the torsion spring (48) are fixedly connected to the bracket (41) and the rotating rod (42) respectively.

8. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 1, characterized in that: The output end of the second electric push rod (51) is fixedly equipped with a connecting plate (52), the spoiler (53) is fixedly installed on the surface of the connecting plate (52), the spoiler (53) slides through the beating tank (1), and the beating tank (1) is detachably equipped with a protective cover (54) relative to the connecting plate (52).

9. The high-efficiency production equipment and process of high-strength corrugated medium paper according to claim 8, characterized in that: A screw rod (55) is fixedly mounted on the outer circumferential surface of the beating tank (1), and a positioning ring (56) is threadedly connected to the circumferential surface of the screw rod (55), and the positioning ring (56) is located between the connecting plate (52) and the beating tank (1).

10. The efficient production process of high-strength corrugated medium paper according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Raw material pretreatment: Prepare long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) using a pulping machine, mix the long fiber raw material (coniferous pulp) and short fiber raw material (broadleaf pulp, recycled pulp) in a mass ratio of 3:2:5, add the mixture to a mixer, and mix at a speed of 300-400 r / min for 15-20 min to preliminarily disperse the raw materials into a fiber suspension; S2. Chemical pretreatment: adding sodium hydroxide solution (0.5%-1% of the total weight of the raw materials) to the fiber suspension, stirring evenly, and then heat-treating at 50-60°C for 30-40 minutes to remove impurities and part of the lignin on the fiber surface and improve the reaction activity of the fiber; S3. Optimization of pulping process: The chemically pretreated fiber suspension is transported to the refiner for refining treatment, and the beating degree is controlled at 30-35°SR. The refining process adopts a segmented refining method. The first segment refining pressure is 0.1-0.15MPa and the time is 10-15min; the second segment refining pressure is 0.2-0.25MPa and the time is 8-12min, so as to avoid excessive fiber cutting, promote fiber separation and enhance the bonding force between fibers. S4. Adding reinforcing agent: Add 1%-2% of the total mass of the raw materials to the fiber suspension after refining, and add 0.5%-1% of the wet strength agent (PAE resin). Stir thoroughly to make the reinforcing agent evenly dispersed between the fibers to further improve the strength of the corrugated core paper. S5. Improvement of papermaking process: The fiber suspension after adding the reinforcing agent is transported to the paper machine for papermaking. During the papermaking process, a vacuum suction device is used for dehydration, and the vacuum degree is controlled at 40-60kPa to improve the dehydration efficiency. At the same time, a double-roll press is used in the pressing section, and the pressing pressure is controlled at 0.8-1.2MPa to make the corrugated core paper more dense and improve the strength of the corrugated core paper. S6. Surface sizing: Surface sizing is performed on the corrugated paper after papermaking. The sizing liquid is a starch glue liquid with a mass fraction of 3%-5%, and the sizing amount is controlled at 8-12g / m 2 , improve the surface strength and water resistance of corrugated core paper; S7. Drying treatment: The corrugated core paper after gluing is sent to the drying section for drying. The drying temperature adopts a gradient heating method. The first section drying temperature is 80-90℃, and the time is 5-8min; the second section drying temperature is 100-110℃, and the time is 3-5min; the third section drying temperature is 120-130℃, and the time is 2-3min. The moisture content of the corrugated core paper is controlled at 8%-10% to ensure the strength and flexibility of the corrugated core paper.

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