Waste paper repulping device

Abstract

A waste paper product pulping device comprises a feeding groove and a rotary drum, a feeding port is formed in the top of the feeding groove, a bearing is arranged at an opening in the side face of the bottom of the feeding groove, the bottom of the feeding groove is rotationally connected with one end of the rotary drum through a first bearing, and the waste paper product pulping device further comprises a screen drum which is rotationally connected with the end, away from the feeding groove, of the rotary drum; a pulping area is arranged in the rotary drum, the pulping area comprises a plurality of material raising plates and material blocking plates, the plurality of material raising plates are annularly arranged on the inner wall of the rotary drum around the virtual central axis of the rotary drum and are equidistantly arranged along the virtual central axis of the rotary drum, and every two adjacent annularly arranged material raising plates are arranged in a staggered manner; the multiple material blocking plates are arranged at equal intervals and fixedly connected with the inner side wall of the rotary drum, U-shaped notches are formed in the material blocking plates, the width of the U-shaped notch close to the side of the feeding groove is larger than that of the U-shaped notch close to the side of the screen drum, and the rotary drum and the screen drum are made to have different rotating speeds by separating the rotary drum and the screen drum. The efficiency of filtering out fiber accepted pulp by the screen drum is improved, the transportation and installation cost of the equipment is reduced, the defibering efficiency of waste paper products is improved through the pulping area, and the recovery rate of waste paper fibers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulping equipment, in particular to a rotary drum type pulping device. Background Art

[0002] The rotary drum pulper integrates pulping and coarse screening. Waste paper is uniformly fed into the pulping area by a conveyor belt, and a certain amount of water and chemicals are added at the same time. The waste paper is soaked with water and chemicals to a concentration of 14% to 18%. As the drum rolls, it is repeatedly lifted and dropped by the partitions on the inner wall, and collides with the hard inner surface of the drum. The mild shear force generated loosens the waste paper fibers. Since there is no cutting during the loosening process, the waste paper fibers are almost not damaged, and the original length and strength are well retained. The waste paper fibers and unbroken twisted ropes, films, plastics, fabrics, adhesive tapes and other debris enter the screening area together due to the 1° inclination angle during installation. The screening area cylinder has screen holes with an aperture of 5 to 16 mm according to the different raw materials being processed. The pulp is diluted to a concentration of 3% to 5% by a water spray pipe installed on the upper part of the screen drum, and the screen plate is cleaned. The pulp flows into the pulp pool from the screen holes in the screening area, and the coarse impurities continue to move forward and are finally discharged continuously at the slag discharge port at the end of the screen drum.

[0003] Since the process of waste paper decomposition by a drum pulper is relatively gentle, impurities that are not decomposed during actual use will be discharged and discarded along with some paper fibers along with the tailings, and will not be well utilized and will cause waste. For example, Chinese Patent No.: ZL201621425311.3 discloses a drum pulper cylinder structure, comprising a horizontally arranged drum cylinder, the drum cylinder is divided into a plurality of working sections along the axial direction, the working sections are, from front to back, a pre-impregnation section, a disintegration section and a screening section, the drum cylinder at the disintegration section is further divided into a plurality of secondary working sections along the axial direction, the secondary working sections are, from front to back, a primary disintegration section, a primary screening section and a secondary disintegration section, the screening section being a fine screening section; the inner wall of the drum cylinder at the pre-impregnation section, the primary disintegration section, the primary screening section, the secondary disintegration section and the fine screening section is divided into A lifting plate group is separately provided, which includes a plurality of lifting plates evenly distributed along the circumferential direction, each lifting plate is arranged along the axial direction and fixedly connected to the inner wall of the corresponding drum cylinder, which can effectively reduce the length of the equipment, reduce the power consumption of the equipment, and increase the screening efficiency of the equipment. However, the prepreg section, the cracking section and the screening section in the cylinder structure are an integrated structure, which leads to high transportation and installation costs of the equipment and low installation efficiency. Secondly, since the prepreg section, the cracking section and the screening section have the same rotation speed, the screening section rotates at a high speed together with the cracking section, resulting in some waste paper fibers being carried away by the crushed impurities along with the debris before being separated from the unbroken debris, and discharged from the tailings port at the rear end of the screening section, which reduces the recovery rate of the waste paper fibers and causes a large amount of waste paper fibers to be wasted during the recycling process. Summary of the invention

[0004] The technical problem to be solved by the utility model is how to facilitate the installation and transportation of the equipment, and how to improve the recovery rate of waste paper fibers. The purpose of the utility model is to provide a waste paper product pulping device which can separate the waste paper product decomposition and waste paper fiber screening areas, prolong the time of waste paper product decomposition and waste paper fiber screening, thereby improving the recovery efficiency of waste paper fiber fine pulp.

[0005] The technical solution adopted by the utility model is: a waste paper pulping device, comprising a feed trough and a drum, the top of the feed trough is provided with a feed inlet, the opening on the side of the bottom of the feed trough is provided with a bearing, the drum is cylindrical, the bottom of the feed trough is rotatably connected to one end of the drum through a first bearing, and also includes a screen drum, the screen drum is rotatably connected to the end of the drum away from the feed trough; a pulping area is provided in the drum, and the pulping area includes a lifting plate and a baffle plate, and the lifting plate is provided with a plurality of lifting plates, and the plurality of lifting plates are arranged in a ring around the virtual center axis of the drum on the inner wall of the drum and are equidistantly arranged along the virtual center axis of the drum, and two adjacent annularly arranged lifting plates are staggered, the baffle plates are provided with a plurality of and the plurality of baffle plates are equidistantly arranged and fixedly connected to the inner side wall of the drum, and the baffle plates are all provided with U-shaped notches, and the width of the U-shaped notch close to the feed trough is greater than the width of the U-shaped notch close to the screen drum.

[0006] The following beneficial effects can be achieved by using a waste product pulping device provided by the utility model:

[0007] (1) Separate the drum used for pulping from the screen drum used for filtering so that the crushing and screening have different rotation speeds. This prevents the high-speed rotation from moving waste paper fibers and debris to the screening area too quickly, causing part of the waste paper fibers to be discharged along with the debris, thereby affecting the recovery rate of the waste paper fibers.

[0008] (2) After the strands and screen drum are divided into two parts, the length of the equipment before installation can be greatly reduced, thereby reducing the transportation cost of the equipment, facilitating installation one by one, reducing the installation cost of the equipment, and improving the installation efficiency of the equipment.

[0009] (3) The multiple lifting plates arranged in a circular pattern and at equal distances in the pulping area increase the number of times the waste paper hits the inner wall of the stock, thereby improving the efficiency of waste paper dispersal.

[0010] (4) The speed of the mixture of waste paper and chemicals moving in the drum along the inclination angle is slowed down by multiple baffles arranged at intervals. At the same time, the U-shaped gap with a decreasing width from the feed trough to the end of the screen drum is used to limit the moving volume of the mixture, thereby extending the time for the waste paper to be deflated, preventing the shredded paper from entering the screen drum before being deflated, and improving the recovery rate of waste paper fibers.

[0011] Preferably, a first gear ring is fixed on the outer wall of the middle part of the drum, and a first power transmission mechanism is provided on the lower side of the drum. The first power transmission mechanism includes a first power pinion, a first reduction motor and a first magnetic coupling. The power output shaft of the first reduction motor is fixedly connected to one end of the first magnetic coupling, and the other end of the first magnetic coupling is connected to the first power pinion shaft. The first power pinion and the first gear ring are meshed with each other.

[0012] Power is provided by the first reduction motor, and the first magnetic coupler drives the first power pinion to rotate, and the first power pinion drives the first ring gear to rotate, thereby driving the drum to rotate. The first magnetic coupler is used to meet the output of load torque, reduce the load of the first reduction motor when starting, eliminate vibration, protect the first power pinion and the first ring gear, and extend the service life of the first power transmission mechanism.

[0013] Preferably, supporting wheels are fixed to both ends of the outer side wall of the drum, and supporting rollers are provided below the supporting wheels, and the outer surfaces of the supporting rollers are in contact with the outer surface of the supporting wheels.

[0014] The drum is supported by two supporting rollers and a supporting wheel on the outer surface of the drum, which makes it easy to adjust and fix the inclination angle of the drum without affecting the rotation of the drum.

[0015] Preferably, a gear cover is provided on the outer side of the first gear ring and the first power pinion, and the gear cover is not in contact with the first gear ring and the first power pinion.

[0016] The gear cover protects the first gear ring and the first power pinion to prevent the first gear ring and the first power pinion from being damaged by external dust, foreign matter, moisture, etc., thereby reducing the failure rate and maintenance cost.

[0017] Preferably, the ends of the lifting plates are provided with serrations.

[0018] The saw teeth can speed up the tearing of waste paper. When the wheel rotates, the lifting plate and the saw teeth at the end of the lifting plate can be driven to rotate together, so that a large area of ​​waste paper can be quickly torn into small pieces of waste paper, increasing the contact area between waste paper and chemicals, thereby accelerating the efficiency of waste paper dispersal.

[0019] Preferably, a guide ring is provided at the end of the rotary drum close to the screen cylinder, the outer diameter of the guide ring is smaller than the inner diameter of the screen cylinder, and a slag discharge port is provided at the end of the screen cylinder away from the guide ring.

[0020] The guide ring facilitates the movement of waste paper fibers into the screen drum to prevent leakage of waste paper fiber pulp during movement; the slag discharge port at one end of the screen drum away from the guide ring facilitates the discharge of debris such as twisted ropes, films, plastics, fabrics, adhesive tapes, etc. that cannot be released.

[0021] Preferably, a slurry groove is provided on the outside of the screen cylinder, and second bearings are provided at both ends of the slurry groove. The two ends of the slurry groove are fixedly connected to the outer ring of the second bearing, and the side wall of the guide ring is fixedly connected to the inner ring of the second bearing at the end of the screen cylinder away from the slag discharge port.

[0022] The second bearings at both ends of the slurry tank of the slurry tank machine facilitate fixing the two ends of the screen drum without affecting the rotation of the screen drum.

[0023] Preferably, the middle portion of the screen cylinder is a screening area, a plurality of screen holes are provided on the side wall of the screening area, and a plurality of water guide rings arranged at equal distances are provided on the outer side wall of the screening area.

[0024] The screen holes in the screening area facilitate flushing out the fiber pulp and filtering out the unresolved debris; the multiple water pipes on the outer wall of the screening area facilitate strengthening the screen to prevent deformation of the screen and avoid the fiber pulp from accumulating on the outer surface of the screen cylinder or in the screen holes, thereby accelerating the discharge of the fiber pulp.

[0025] Preferably, a second gear ring is fixed on the outer wall of the screen drum away from the end of the drum, and a second power transmission mechanism is provided on the lower side of the screen drum. The second power transmission mechanism includes a second power pinion, a second reduction motor and a second magnetic coupling. The second gear ring is meshed with the second power pinion, one end of the second magnetic coupling is connected to the second power pinion shaft, and the other end of the second magnetic coupling is connected to the power output shaft of the second reduction motor.

[0026] The second power transmission mechanism allows the screen drum and the drum to have different rotation speeds, thereby extending the time for cleaning and screening waste paper fibers and debris in the screen drum without affecting the speed of dispersing waste paper products in the drum, thereby improving the recovery rate of waste paper fibers.

[0027] Preferably, a water pipe is provided in the screen cylinder, and a plurality of water outlets are provided at the bottom of the water pipe, and the plurality of water outlets are all directed toward the bottom of the slurry tank.

[0028] The water pipe and the water outlet on the water pipe are used to clean the debris and the screening area, so that the waste paper fibers can be washed down and enter the pulp tank, and the clogging of the screen holes in the screen cylinder can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1It is a three-dimensional structural schematic diagram of the utility model;

[0031] Figure 2 It is a three-dimensional structural schematic diagram of the utility model in a cutaway state;

[0032] Figure 3 It is the front view of the utility model;

[0033] Figure 4 This utility model Figure 3 Sectional view at AA in the middle;

[0034] Figure 5 It is a three-dimensional structural schematic diagram of the transfer unit in the utility model;

[0035] Figure 6 It is a three-dimensional structural schematic diagram of the cross-section state of the transfer unit in the utility model.

[0036] Figure markings: 1-feed trough, 11-feed port, 12-first bearing, 2-drum, 21-supporting wheel, 211-supporting roller, 22-first gear ring, 23-gear cover, 24-first power transmission mechanism, 241-first power pinion, 242-first reduction motor, 243-first magnetic coupling, 25-pulping area, 26-lifting plate, 261-sawtooth, 27-blocking plate, 271-U-shaped notch, 28-guide ring, 3-screen drum, 31-pulp trough, 32-second bearing, 33-screening area, 34-screen hole, 35-water guide ring, 36-water pipe, 361-water outlet, 37-second gear ring, 38-second power transmission mechanism, 381-second power pinion, 382-second magnetic coupling, 383-second reduction motor, 39-slag discharge port. DETAILED DESCRIPTION

[0037] The following will be combined with the attached Figure 1-6 The technical solution of the utility model is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] The following is further described in conjunction with specific embodiments. Figure 1-6As shown, this embodiment is a waste paper pulping device, including a feed trough 1 and a drum 2. The top of the feed trough 1 is provided with a feed port 11, and the opening on the side of the bottom of the feed trough 1 is provided with a bearing. The drum 2 is cylindrical, and the bottom of the feed trough 1 is rotatably connected to one end of the drum 2 through a first bearing 12. The drum 2 also includes a screen drum 3, and the screen drum 3 is rotatably connected to the end of the drum 2 away from the feed trough 1. A pulping area 25 is provided in the drum 2, and the pulping area 25 includes a lifting plate 26 and a baffle plate 27. There are multiple material lifting plates 26, and the multiple material lifting plates 26 are arranged in a ring around the virtual central axis of the drum 2 on the inner wall of the drum 2 and are arranged equidistantly along the virtual central axis of the drum 2. Two adjacent ring-arranged material lifting plates 26 are staggered. There are multiple material blocking plates 27, and the multiple material blocking plates 27 are equidistantly arranged and fixedly connected to the inner wall of the drum 2. The material blocking plates 27 are all provided with U-shaped notches 271, and the width of the U-shaped notch 271 on the side close to the feed trough 1 is greater than the width of the U-shaped notch 271 on the side close to the screen drum 3. The width of the equipment is improved by separating the pulping of the drum 2 from the screening of the screen drum 3, so that the crushing and screening have different rotation speeds, and the high-speed rotation is prevented from moving the waste paper fibers and debris to the screening area 33 quickly, causing part of the waste paper fibers to be discharged together with the debris, thereby affecting the recovery rate of the waste paper fibers. At the same time, the length of the equipment before installation is greatly reduced, thereby reducing the transportation cost and installation cost of the equipment, and improving the installation efficiency of the equipment. The number of collisions between the waste paper products and the inner wall of the drum 2 is increased by multiple ring-arranged and equidistantly arranged lifting plates 26 in the pulping area 25, thereby improving the efficiency of the waste paper products. The speed of the mixture of waste paper products and chemicals moving in the drum 2 with the inclination angle is slowed down by multiple spaced baffles 27. At the same time, the U-shaped notch 271 with a width from large to small in the drum 2 near the feed trough 1 to the end of the screen drum 3 is used to limit the moving volume of the mixture, thereby extending the time for the waste paper products to be dispersed, and preventing the shredded paper from entering the screen drum 3 before being dispersed, thereby improving the recovery rate of the waste paper fibers.

[0041] Reference Figure 3-5As shown, in this embodiment, a first gear ring 22 is fixed on the outer wall of the middle part of the drum 2, and a first power transmission mechanism 24 is provided on the lower side of the drum 2. The first power transmission mechanism 24 includes a first power pinion 241, a first reduction motor 242 and a first magnetic coupler 243. The power output shaft of the first reduction motor 242 is fixedly connected to one end of the first magnetic coupler 243, and the other end of the first magnetic coupler 243 is connected to the first power pinion 241 axis. The first power pinion 241 and the first gear ring 22 are meshed with each other, and power is provided by the first reduction motor 242. The first magnetic coupler 243 drives the first power pinion 241 to rotate, and the first power pinion 241 drives the first gear ring 22 to rotate, thereby driving the drum 2 to rotate. The first magnetic coupler 243 is used to meet the output of the load torque, reduce the load of the first reduction motor 242 when starting, eliminate vibration, protect the first power pinion 241 and the first gear ring 22, and extend the service life of the first power transmission mechanism 24.

[0042] Reference Figure 1 As shown, in this embodiment, support wheels 21 are fixed to both ends of the outer wall of the drum 2, and support rollers 211 are provided below the support wheels 21. The outer surfaces of the support rollers 211 are in contact with the outer surfaces of the support wheels 21. The drum 2 is supported by the two support rollers 211 and the support wheels 21 on the outer surface of the drum 2, which facilitates the adjustment and fixing of the inclination angle of the drum 2 without affecting the rotation of the drum 2.

[0043] Reference Figure 4 As shown, in this embodiment, a gear cover 23 is provided on the outer side of the first gear ring 22 and the first power pinion 241, and the gear cover 23 is not in contact with the first gear ring 22 and the first power pinion 241. The gear cover 23 protects the first gear ring 22 and the first power pinion 241, and prevents the first gear ring 22 and the first power pinion 241 from being damaged by external dust, foreign matter, moisture, etc., thereby reducing the failure rate and maintenance cost.

[0044] Reference Figure 2 or Figure 6 As shown, in this embodiment, the ends of the lifting plates 26 are provided with saw teeth 261, which can accelerate the tearing speed of waste paper products. When the drum 2 rotates, the lifting plates 26 and the saw teeth 261 at the ends of the lifting plates 26 are driven to rotate together, so that a large area of ​​waste paper products can be quickly torn into small areas of waste paper pieces, and the contact area between the waste paper products and the chemicals is accelerated, thereby accelerating the disintegration efficiency of the waste paper products.

[0045] Reference Figure 2As shown, in this embodiment, a guide ring 28 is provided at the end of the drum 2 close to the screen cylinder 3. The outer diameter of the guide ring 28 is smaller than the inner diameter of the screen cylinder 3. The guide ring 28 facilitates the movement of waste paper fibers into the screen cylinder 3 to prevent leakage of waste paper fiber pulp during movement.

[0046] Reference Figure 2 As shown, in this embodiment, a slag discharge port 39 is provided at one end of the screen drum 3 away from the guide ring 28, through which debris such as twisted ropes, films, plastics, fabrics, adhesive tapes, etc. that cannot be discharged are easily discharged.

[0047] Reference Figure 2 As shown, in this embodiment, a slurry groove 31 is provided on the outer side of the screen drum 3, and second bearings 32 are provided at both ends of the slurry groove 31. The two ends of the slurry groove 31 are fixedly connected to the outer ring of the second bearing 32, and the side wall of the guide ring 28 is fixedly connected to the inner ring of the second bearing 32 at the end of the screen drum 3 away from the slag discharge port 39. The slurry groove 31 and the second bearings 32 at both ends of the slurry groove 31 facilitate fixing the two ends of the screen drum 3 without affecting the rotation of the screen drum 3.

[0048] Reference Figure 2 As shown, in this embodiment, the middle part of the screen drum 3 is a screening area 33, and a plurality of screen holes 34 are provided on the side wall of the screening area 33. A plurality of water guide rings 35 are arranged at equal intervals on the outer wall of the screening area 33. The screen holes 34 of the screening area 33 are used to easily flush out the fiber pulp and filter out the unresolved debris; the plurality of water guide pipes on the outer wall of the screening area 33 are used to easily strengthen the screen to prevent the screen from being deformed, and at the same time, to avoid the fiber pulp from gathering on the outer surface of the screen drum 3 or in the screen holes 34, thereby accelerating the discharge of the fiber pulp.

[0049] Reference Figure 3 As shown, in this embodiment, a second gear ring 37 is fixed on the outer side wall of the screen drum 3 away from the end of the drum 2, and a second power transmission mechanism 38 is provided on the side and lower part of the screen drum 3. The second power transmission mechanism 38 includes a second power pinion 381, a second reduction motor 383 and a second magnetic coupler 382. The second gear ring 37 is meshed with the second power pinion 381, one end of the second magnetic coupler 382 is axially connected to the second power pinion 381, and the other end of the second magnetic coupler 382 is axially connected to the power output shaft of the second reduction motor 383. The second power transmission mechanism 38 facilitates the screen drum 3 and the drum 2 to have different rotation speeds, prolongs the time for washing and screening waste paper fibers and debris in the screen drum 3 without affecting the speed of dispersing waste paper products in the drum 2, thereby improving the recovery rate of waste paper fibers. The second magnetic coupler 382 reduces the load of the second reduction motor 383 when the screen drum 3 is started, reduces vibration, protects the second power pinion 381 and the second gear ring 37, and prolongs the service life of the second power transmission mechanism 38.

[0050] Reference Figure 2 As shown, in this embodiment, a water pipe 36 is provided in the screen cylinder 3, and a plurality of water outlets 361 are provided at the bottom of the water pipe 36. The plurality of water outlets 361 are all directed toward the bottom of the pulp tank 31. The water pipe 36 and the water outlets 361 on the water pipe 36 facilitate cleaning of debris and the screening area 33, facilitate flushing of waste paper fibers into the pulp tank 31, and avoid blockage of the screen holes 34 in the screen cylinder 3.

[0051] Example 2

[0052] When the utility model is used, the first reduction motor 242 and the second reduction motor 383 are started, the speed of the second reduction motor 383 is lower than the speed of the first reduction motor 242, the first reduction motor 242 drives the rotating drum 2 to rotate through the first magnetic coupler 243 and the first power pinion 241, the second reduction motor 383 drives the screen drum 3 to rotate through the second magnetic coupler 382 and the second power pinion 381, and then the waste paper products are uniformly fed into the feed trough 1 through the conveyor belt, and the waste paper products are uniformly fed into the rotating drum 2 in equal amounts by using the feed trough 1, and a certain amount of water and chemicals are added at the same time;

[0053] Waste paper, water and chemicals are repeatedly lifted up by the lifting plate 26 in the drum 2, and then fall to the inner wall of the drum 2. The waste paper, water and chemicals are fully mixed by repeated beating, and the mild shear force generated by the beating is used to start the disintegration of waste paper fibers. Since the drum pulper has an inclination angle of 1°, waste paper, paper fibers and debris flow downward while colliding with the drum 2 under the action of gravity. The saw teeth 261 at the end of the lifting plate 26 can accelerate the tearing of waste paper, increase the contact area between waste paper and water and chemicals, and thus accelerate the disintegration of waste paper fibers.

[0054] In the process of waste paper, paper fibers and debris flowing slowly downward at an inclined angle, they are blocked by the baffle plate 27, which slows down the speed of the mixture moving to the other side of the baffle plate 27. At the same time, the U-shaped notch 271 on the baffle plate 27 allows some of the waste paper, waste paper fibers and debris that have been softened and deflated to pass through. The waste paper that has not been dissolved and has a large volume is blocked by the baffle plate 27 and then repeatedly lifted and dropped by the lifting plate 26 until it is deflated. After the waste paper is repeatedly lifted and dropped by the rotating drum 2, multiple baffle plates 27 are used to extend the deflation time of the waste paper fibers, thereby improving the deflation efficiency of the waste paper fibers and accelerating the formation of fiber pulp.

[0055] The fiber pulp flows into the screen drum 3 from the guide ring 28 under the action of the inclination angle. The speed of the second reduction motor 383 that drives the screen drum 3 is lower than the speed of the second reduction motor 383 that drives the drum 2. Therefore, the speed of the screen drum 3 is lower than the speed of the drum 2, thereby prolonging the residence time of the debris in the screen drum 3, and facilitating the fiber pulp to flow into the pulp tank 31 through the sieve holes 34. The water pipe 36 above the inside of the screening area 33 sprays water downward, and the rotating screen drum 3 makes the debris repeatedly exposed under the water outlet 361, and is sprayed and diluted through the water outlet 361 to wash away the waste paper fibers adhering to the debris, and at the same time wash the screening area 33 to prevent the sieve holes 34 from being blocked. After filtering and washing, the unbroken ropes, films, plastics, fabrics, adhesive tapes and other debris continue to move forward and are finally discharged from the slag discharge port 39 at the end of the screen drum 3. By separating the drum 2 from the screen drum 3, the transportation and installation costs of the equipment are greatly reduced. The lifting plate 26 and the saw teeth 261 are used to improve the efficiency of decomposing waste paper products. The baffle plate 27 is used to extend the decomposing time of waste paper products. By making the drum 2 and the screen drum 3 have different rotation speeds, the efficiency of the screen drum 3 in filtering out fiber pulp is improved, avoiding the problem of undecompressed waste paper products being mixed with unbroken debris and discharged together, thereby improving the recovery efficiency of waste paper fibers. It has a wide range of promotion and application value in the field of pulping equipment technology.

[0056] The directional terms mentioned in the present invention, such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0057] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art, and the machinery, parts and equipment all adopt conventional models in the prior art.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A waste paper pulping device, comprising a feed trough (1) and a rotating drum (2), wherein the top of the feed trough (1) is provided with a feed port (11), the opening on the side of the bottom of the feed trough (1) is provided with a bearing, the rotating drum (2) is cylindrical, the bottom of the feed trough (1) is rotatably connected to one end of the rotating drum (2) via a first bearing (12), and is characterized in that: The invention also comprises a screen drum (3), wherein the screen drum (3) is rotatably connected to one end of the rotary drum (2) away from the feed trough (1); a pulping area (25) is provided in the rotary drum (2), wherein the pulping area (25) comprises a lifting plate (26) and a baffle plate (27); a plurality of the lifting plates (26) are provided, and the plurality of lifting plates (26) are arranged in a ring around the virtual center axis of the rotary drum (2) on the inner wall of the rotary drum (2) and are arranged equidistantly along the virtual center axis of the rotary drum (2); two adjacent lifting plates (26) arranged in a ring are arranged in a staggered manner; a plurality of the baffle plates (27) are provided, and the plurality of baffle plates (27) are arranged equidistantly and fixedly connected to the inner wall of the rotary drum (2); each of the baffle plates (27) is provided with a U-shaped notch (271); the width of the U-shaped notch (271) on the side close to the feed trough (1) is greater than the width of the U-shaped notch (271) on the side close to the screen drum (3).

2. The waste paper pulping device according to claim 1, characterized in that: A first gear ring (22) is fixed on the outer wall of the middle part of the rotating drum (2), and a first power transmission mechanism (24) is provided at the lower side of the rotating drum (2). The first power transmission mechanism (24) comprises a first power pinion (241), a first reduction motor (242) and a first magnetic coupler (243). The power output shaft of the first reduction motor (242) is fixedly connected to one end of the first magnetic coupler (243), and the other end of the first magnetic coupler (243) is connected to the shaft of the first power pinion (241). The first power pinion (241) and the first gear ring (22) are meshed with each other.

3. The waste paper pulping device according to claim 2, characterized in that: Support wheels (21) are fixed to both ends of the outer side wall of the rotating drum (2), and support rollers (211) are provided below the support wheels (21), and the outer surfaces of the support rollers (211) are in contact with the outer surface of the support wheels (21).

4. The waste paper pulping device according to claim 2, characterized in that: A gear cover (23) is provided on the outer sides of the first gear ring (22) and the first power pinion (241); the gear cover (23) is not in contact with the first gear ring (22) and the first power pinion (241).

5. The waste paper pulping device according to claim 1, characterized in that: The ends of the lifting plates (26) are each provided with saw teeth (261).

6. The waste paper pulping device according to claim 1, characterized in that: A material guide ring (28) is provided at the end of the rotary drum (2) close to the sieve drum (3), and the outer diameter of the material guide ring (28) is smaller than the inner diameter of the sieve drum (3); and a slag discharge port (39) is provided at the end of the sieve drum (3) away from the material guide ring (28).

7. The waste paper pulping device according to claim 6, characterized in that: A slurry groove (31) is provided on the outside of the screen drum (3), and second bearings (32) are provided at both ends of the slurry groove (31). The two ends of the slurry groove (31) are fixedly connected to the outer ring of the second bearing (32), and the side wall of the guide ring (28) is fixedly connected to the inner ring of the second bearing (32) at the end of the screen drum (3) away from the slag discharge port (39).

8. The waste paper pulping device according to claim 7, characterized in that: The middle portion of the screen cylinder (3) is a screening area (33), a plurality of screen holes (34) are provided on the side wall of the screening area (33), and a plurality of water guide rings (35) are provided on the outer side wall of the screening area (33) at equal intervals.

9. The waste paper pulping device according to claim 8, characterized in that: A second gear ring (37) is fixed on the outer wall of the end of the screen drum (3) away from the rotating drum (2), and a second power transmission mechanism (38) is provided on the side and lower part of the screen drum (3). The second power transmission mechanism (38) comprises a second power pinion (381), a second reduction motor (383) and a second magnetic coupler (382). The second gear ring (37) and the second power pinion (381) are meshed with each other, one end of the second magnetic coupler (382) is connected to the shaft of the second power pinion (381), and the other end of the second magnetic coupler (382) is connected to the power output shaft of the second reduction motor (383).

10. The waste paper pulping device according to claim 9, characterized in that: A water pipe (36) is provided in the screen drum (3), and a plurality of water outlets (361) are provided at the bottom of the water pipe (36), and the plurality of water outlets (361) are all directed toward the bottom of the slurry tank (31).

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