Pulping device for pillow bag body paper production and use method of pulping device

Abstract

The invention belongs to the technical field of papermaking equipment, and particularly relates to a pulping device for pillow bag body paper production and a using method thereof. Comprising a slurry pretreatment device, the slurry pretreatment device comprises a treatment bin provided with a treatment chamber, a treatment assembly is arranged in the treatment chamber, and the treatment assembly can remove large-particle impurities in slurry passing through the treatment chamber; the pulping treatment device comprises a shell arranged on the base, a pulping chamber is arranged in the shell, the pulping chamber is communicated with a pulp inlet pipe and a pulp outlet, and a pulping unit is arranged in the pulping chamber; wherein the slurry pretreatment device and the grinding treatment device are connected through a pipeline, and slurry is pretreated in the treatment bin and then enters the grinding treatment device through the pipeline to be ground; the pulp pretreatment device and the pulp grinding treatment device are arranged, the pulp sieved by the pulp pretreatment device is fully ground by the pulp grinding treatment device, the pulp grinding quality and the service life of equipment are guaranteed, and the pulp quality after pulp grinding is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of papermaking equipment, and in particular relates to a pulping device for pillow base paper production and a use method thereof. Background Art

[0002] Pillow pack base paper is the base paper of pillow pack paper, which is mainly used for aseptic packaging of milk, juice drinks, alcoholic products, etc. These products have extremely high requirements on the barrier and light-shielding properties of packaging materials, so pillow pack base paper is widely used in these fields. The pulping device of pillow pack base paper in the pulping process is a general pulping device for paper production.

[0003] A Chinese invention patent with publication number CN114855486B discloses a pulping device for producing decorative base paper, including a processing barrel, a soaking barrel fixedly installed inside the processing barrel, a crushing barrel installed above the soaking barrel, a water injection pipe extending into the soaking barrel installed inside the processing barrel, a conical grinding cylinder fixedly connected to the bottom of the processing barrel, a conical grinding roller rotatably installed inside the conical grinding cylinder, and the taper of the conical grinding cylinder is greater than the taper of the conical grinding roller, and a turntable rotatably installed at the bottom of the soaking barrel. The pulping equipment in this patent uses a conical grinding roller to squeeze and grind the pulp in a conical grinding cylinder. The pulp remains in the conical grinding cylinder until it is ground to a level that allows it to leave through the screen provided on the bottom side wall of the conical grinding cylinder. The pulping efficiency is low, the pulp is retained in the conical grinding cylinder, and the conical grinding roller repeatedly rubs against the screen, which can easily cause the screen to be damaged and requires frequent shutdowns for replacement. In order to replace and discover the damage in time, the pulp will leave the pulping equipment before the refining is completed, which will affect the quality of the formed paper. At the same time, the pulp is not processed, and the pulping process is directly performed after the wood pulp board is crushed, which can easily cause equipment wear and reduce the service life. At the same time, the pulping quality is limited. Summary of the invention

[0004] The purpose of the present invention is to provide a pulping device for pillow base paper production and a method of using the same in order to solve the above-mentioned technical problems. A pulp pretreatment device and a pulping treatment device are provided. The pulping treatment device fully grinds the pulp screened by the pulp pretreatment device, thereby ensuring the pulping quality and the service life of the equipment and improving the quality of the pulp after pulping.

[0005] In view of this, the present invention provides a pulping device for pillow base paper production in this embodiment, including: a pulp pretreatment device, the pulp pretreatment device includes a processing bin, a processing chamber is arranged in the processing bin, the processing chamber is connected to be provided with a liquid inlet pipe and a liquid outlet pipe, a processing component is arranged in the processing chamber, and the processing component can remove large particle impurities in the pulp passing through the processing chamber; a pulping treatment device, the pulping treatment device includes a shell arranged on a base, a pulping chamber is arranged in the shell, the pulping chamber is connected to be provided with a pulp inlet pipe and a pulp outlet, and a pulping unit is arranged in the pulping chamber; wherein the pulp pretreatment device and the pulping treatment device are connected by a pipeline, and the pulp enters the pulping treatment device through the pipeline for pulping after being pretreated in the processing bin.

[0006] In the technical scheme, the pulping device of the present invention significantly improves the pulp quality, prolongs the service life of the equipment, improves production efficiency, and reduces energy consumption through two steps of pulp pretreatment and pulping treatment. Specifically, the pulp pretreatment device can effectively remove large-particle impurities and reduce the interference of impurities in the pulping process, thereby improving the quality of the final pulp and making the paper smoother and more uniform. This high-quality pulp performs well in the subsequent processing process and can meet the needs of high-end packaging paper, such as the production of pillow base paper. In addition, the pretreatment step can significantly reduce the impurity content entering the pulping chamber, thereby reducing the wear rate of the pulping unit and prolonging the service life of the equipment. At the same time, the pulp directly enters the pulping treatment device through the pipeline after pretreatment, reducing the time loss in the intermediate links and improving the efficiency of the overall production line. Since most of the large-particle impurities are removed by pretreatment, the energy consumption required by the pulping unit during operation is reduced, thereby reducing the energy consumption of the entire production process.

[0007] In the above technical solution, further, a stop plate is arranged in the processing chamber, which separates the processing chamber into an upper screening chamber and a lower receiving chamber along the height direction. The middle part of the stop plate is a screen structure, the receiving chamber is connected to a liquid inlet pipe, the screening chamber is connected to a screening pipe, and the processing component is arranged in the screening chamber.

[0008] In the present technical solution, the slurry enters the receiving chamber at the bottom through the liquid inlet pipe connected to the processing chamber, and the heavier impurities in the slurry are deposited in the receiving chamber. At the same time, the setting of the baffle screen structure can prevent the slurry from bringing in a certain amount of heavier impurities when it quickly enters the screening chamber when the slurry flow rate is high.

[0009] In the above technical solution, further, the processing component includes a cylindrical sieve plate fixedly connected to the stop plate, the sieve plate is arranged above the stop plate around the outer side of the screen structure in the middle of the stop plate, the bottom of the sieve plate is fixedly connected to the stop plate, the top extends upward and is connected to the top wall of the screening chamber, the sieve plate is provided with a screening channel, and the inner side of the sieve plate is provided with a driving unit capable of generating centrifugal force on the slurry.

[0010] In this technical solution, it is possible to ensure that the slurry that passes through the screen structure on the stop plate and enters the screening chamber enters the inner side of the screen plate, ensuring that the slurry can leave the screening chamber only after being screened by the screen plate.

[0011] In the above technical solution, further, the driving unit includes a driving roller, which is rotatably arranged in the screening chamber along the central axis direction of the screening chamber, one end of the driving roller passes through the screening chamber and is transmission-connected to a first motor, the first motor is fixedly connected to the top of the processing bin, and two connecting seat plates are arranged on the driving roller away from each other, the connecting seat plates and the driving roller are fixedly connected, and the two connecting seat plates are provided with spiral strips around the circumference of the driving roller.

[0012] In this technical solution, the first motor drives the connecting seat plate and the spiral strip plate to rotate, thereby generating a centrifugal force on the slurry in the screening chamber, prompting the slurry to pass through the screen plate with a screening channel for screening. The screening channel is preferably an inclined strip screen slit, and the size of the screening channel is set according to production requirements.

[0013] In the above technical scheme, further, an impurity discharge pipe is provided in the bottom of the receiving chamber, and an impurity removal unit is provided in the receiving chamber. The impurity removal unit includes an impurity removal roller rotatably arranged in the receiving chamber along the central axis of the receiving chamber, an "S"-shaped impurity removal plate is fixedly provided on the impurity removal roller, one end of the impurity removal roller passes through the bottom wall of the receiving chamber and is transmission-connected to a second motor, and the second motor is fixedly connected to the bottom of the processing chamber.

[0014] In the present technical solution, impurities with heavier mass and larger volume can quickly settle in the receiving chamber after entering the processing chamber, which can prevent these impurities from entering the upper screening chamber and causing wear on the processing unit and easily clogging the screen plate, thereby extending the service life of the equipment and avoiding shutdown to deal with corresponding faults. Both the above-mentioned impurities and the light impurities that enter the screening chamber and are screened will eventually settle to the bottom wall of the receiving chamber. The provision of an impurity removal unit and an impurity discharge pipe can prevent a large amount of impurities from accumulating and discharging the deposited impurities in time, thereby preventing the volume of the slurry contained in the processing chamber from being reduced and ensuring the screening efficiency. The switch valve provided at the impurity discharge pipe is omitted in the figure. When the impurity removal unit is started, it is opened to ensure that the impurities leave the receiving chamber from the impurity discharge pipe.

[0015] In the above technical scheme, further, the outer shell includes a left shell and a right shell, the refining unit includes a left refining plate and a right refining plate arranged in the refining chamber, and the left refining plate and the right refining plate are provided with opposite refining teeth, a refining channel is left between the left refining plate and the right refining plate, the right refining plate is arranged on a first refining fixed plate connected to the right shell, the left refining plate is fixedly arranged on a second refining fixed plate, the second refining fixed plate is coaxially connected with a refining shaft, the refining shaft passes through the left shell and is transmission-connected to a third motor, and the third motor is connected to the base through a fixed seat.

[0016] In the present technical scheme, the left shell and the right shell are buckled to form an outer shell, and the two can be threaded or one side is threaded and the other side is hinged. The pulp enters the refining chamber from the pulp inlet pipe set at the upper end of the shell, and passes through the refining channel set between the left refining plate and the right refining plate. The third motor is started to drive the left refining plate to rotate, and cooperates with the right refining plate to refine the pulp. In this embodiment, the right refining plate is fixedly connected to the right shell through the first refining fixing plate. In other embodiments, it can be set for rotation. For example, a motor is set on the right shell, and the output end of the motor passes through the shell and is coaxially fixedly connected with the first refining fixing plate, driving the right refining plate to rotate in the opposite direction to the left refining plate, further improving the refining effect. Since the refining teeth of the left refining plate and the right grinding plate are in opposite directions, the pulp will be subjected to shear forces in different directions when passing through, which helps to disperse and broom the fibers, making the pulp more delicate and uniform. High-quality pulp is essential for the production of high-end packaging paper such as pillow base paper.

[0017] In the above technical scheme, further, any one of the left grinding plate or the right grinding plate is provided with an inner grinding layer plate and an outer grinding layer plate radially along the grinding plate, and the inner grinding layer plate and the outer grinding layer plate are both circumferentially arranged on the grinding fixed plate, and the grinding teeth arranged on the inner grinding layer plate and the grinding teeth arranged on the outer grinding layer plate are in opposite directions and are both arc-shaped strip structures.

[0018] In this technical solution, grinding teeth are arranged on both the inner grinding plate and the outer grinding plate in opposite directions. This design allows the pulp to be ground more evenly and comprehensively when passing through, thereby improving the grinding efficiency. At the same time, the grinding teeth with arc-shaped strip structures increase the contact area with the pulp, further improving the grinding effect.

[0019] In the above technical solution, further, a first gap is provided between two adjacent inner grinding plates or two adjacent outer grinding plates, a second gap is provided between the inner grinding plates and the outer grinding plates, and both the inner grinding plates and the outer grinding plates are threadedly connected to the pulping fixing plate.

[0020] In the present technical solution, the setting of the first gap and the second gap, the appropriate gap can promote the flow of materials between the grinding layers, thereby increasing the grinding area, the threaded connection is stable and reliable, and the modular refining plate setting can be maintained and replaced accordingly according to the wear conditions, which also helps to reduce energy consumption. The more reasonable spatial layout reduces friction resistance, thereby improving overall work efficiency.

[0021] In the above technical solution, further, a pulp outlet is provided at the bottom of the shell, and a pulp discharge pipe is provided at the pulp outlet. The pulp discharge pipe is a hollow cylinder which is small at the top and large at the bottom. The upper part of the pulp discharge pipe is connected with the pulping chamber through the pulp outlet, and the lower part is fixedly arranged on the base, and a through opening is arranged at the base corresponding to the lower part of the pulp discharge pipe.

[0022] In the present technical solution, the setting of the slurry introduction and discharge pipe with a larger top and a smaller bottom can effectively prevent the refined slurry from being sprayed when passing through the slurry outlet. In the embodiment, the bottom support feet of the base and the bottom receiving container are not drawn in the figure, and a pipe can also be directly set at the slurry outlet to transfer the slurry.

[0023] The invention also includes a method for using the above-mentioned pulping device for producing pillow base paper, comprising the following steps:

[0024] S1: Slurry introduction, the slurry is passed into the slurry pretreatment device;

[0025] S2: impurity precipitation, the heavier impurities can settle in the receiving chamber after entering the processing chamber;

[0026] S3: impurity screening, starting the driving unit to screen the slurry entering the screening chamber;

[0027] S4: refining, the pulp that has been cleaned from the pulp pretreatment device is passed into the refining treatment device, the refining unit is started, the pulp that has been passed into the refining chamber is refined, and the refined pulp is discharged from the bottom pulp outlet;

[0028] Among them, the impurity removal unit in the receiving chamber is started when a certain amount of impurities are deposited, and helps the impurities to be discharged from the impurity discharge pipe.

[0029] The beneficial effects of the present invention are:

[0030] 1. The pulping device of the present invention significantly improves the pulp quality, extends the service life of the equipment, improves production efficiency, and reduces energy consumption through two steps of pulp pretreatment and pulping treatment. The pulp pretreatment device can effectively remove large-particle impurities and reduce impurity interference during the pulping process, thereby improving the quality of the final pulp and making the paper smoother and more uniform. This high-quality pulp performs well in subsequent processing and can meet the needs of high-end packaging paper, such as the production of pillow base paper. In addition, the pretreatment step can significantly reduce the impurity content entering the pulping chamber, thereby reducing the wear rate of the pulping unit and extending the service life of the equipment. At the same time, the pulp directly enters the pulping treatment device through a pipeline after pretreatment, reducing the time loss in the intermediate links and improving the efficiency of the overall production line. Since the pretreatment removes most of the large-particle impurities, the energy consumption required by the pulping unit during operation is reduced, thereby reducing the energy consumption of the entire production process;

[0031] 2. Impurities with heavier mass and larger volume can be quickly settled in the receiving chamber after entering the processing chamber, which can prevent these impurities from entering the upper screening chamber, causing wear on the processing unit and clogging the screen plate, thus extending the service life of the equipment and avoiding shutdown to deal with corresponding faults. Both the above impurities and the light impurities that enter the screening chamber will eventually settle to the bottom wall of the receiving chamber. The impurity removal unit and the impurity discharge pipe can avoid the accumulation of a large amount of impurities, and the deposited impurities can be discharged in time, which can avoid the reduction of the slurry volume contained in the processing chamber and ensure the screening efficiency. The switch valve set at the impurity discharge pipe is omitted in the figure. When the impurity removal unit is started, it is opened to ensure that the impurities leave the receiving chamber from the impurity discharge pipe;

[0032] 3. The grinding teeth of the left grinding plate and the right grinding layer plate are in opposite directions. The pulp will be subjected to shear forces in different directions when passing through, which is conducive to the dispersion and brooming of fibers, making the pulp more delicate and uniform;

[0033] 4. Any of the left or right refining plates is provided with an inner grinding plate and an outer grinding plate along the radial direction of the refining plate. The inner grinding plate and the outer grinding plate are both circumferentially arranged on the refining fixed plate. The refining teeth arranged on the inner grinding plate and the refining teeth arranged on the outer grinding plate are in opposite directions and are both arc-shaped strip structures. The inner grinding plate and the outer grinding plate are both provided with refining teeth in opposite directions. This design allows the pulp to be subjected to a more uniform and comprehensive grinding effect when passing through, thereby improving the refining efficiency. At the same time, the refining teeth with arc-shaped strip structures increase the contact area with the pulp, further improving the refining effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2is a cross-sectional view of a slurry pretreatment device;

[0036] Figure 3 is a partial view of the drive unit;

[0037] Figure 4 is a partial view of the sieve plate;

[0038] Figure 5 is a cross-sectional view of a pulping treatment device;

[0039] Figure 6 It is a schematic plan view of a left refiner or a right refiner;

[0040] Figure 7 It is a partial front view of the left refiner or the right refiner.

[0041] The symbols in the figure are:

[0042] 1. Slurry pretreatment device; 2. Treatment chamber; 3. Treatment chamber; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Treatment assembly; 7. Housing; 8. Refining chamber; 9. Refining unit; 10. Stop plate; 11. Screening chamber; 12. Receiving chamber; 13. Screen structure; 14. Screen plate; 15. Screening channel; 16. Driving unit; 17. Driving roller; 18. First motor; 19. Connecting seat plate; 20. Spiral strip plate; 21. Impurity discharge pipe; 22. Impurity removal unit; 23. Impurity removal roller; 24. Impurity removal plate ; 25. Second motor; 26. Left shell; 27. Right shell; 28. Refining channel; 29. ​​Left refining plate; 30. Right refining plate; 31. First refining fixed plate; 32. Second refining fixed plate; 33. Refining shaft; 34. Third motor; 35. Base; 36. Fixed seat; 37. Slurry inlet pipe; 38. Slurry outlet; 39. Inner grinding plate; 40. Outer grinding plate; 41. Refining teeth; 42. First gap; 43. Second gap; 44. Slurry discharge pipe; 45. Through port; 46. Refining processing device. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0044] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0045] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0046] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0047] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0048] First embodiment:

[0049] like Figure 1-7 As shown, this embodiment provides a pulping device for pillow base paper production, including: a pulp pretreatment device 1, the pulp pretreatment device 1 includes a processing bin 2, a processing chamber 3 is arranged in the processing bin 2, the processing chamber 3 is connected with a liquid inlet pipe 4 and a liquid outlet pipe 5, a processing component 6 is arranged in the processing chamber 3, and the processing component 6 can remove large particle impurities in the pulp passing through the processing chamber 3; a pulping treatment device 46, the pulping treatment device 46 includes a shell 7 arranged on a base 35, a pulping chamber 8 is arranged in the shell 7, the pulping chamber 8 is connected with a pulp inlet pipe 37 and a pulp outlet 38, and a pulping unit 9 is arranged in the pulping chamber 8; wherein, the pulp pretreatment device 1 and the pulping treatment device 46 are connected by a pipeline, and the pulp enters the pulping treatment device 46 for pulping through the pipeline after being pretreated in the processing bin 2.

[0050] The pulping device of the present invention significantly improves the pulp quality, prolongs the service life of the equipment, improves production efficiency, and reduces energy consumption through two steps of pulp pretreatment and pulping treatment. Specifically, the pulp pretreatment device 1 can effectively remove large-particle impurities and reduce the interference of impurities during the pulping process, thereby improving the quality of the final pulp and making the paper smoother and more uniform. This high-quality pulp performs well in the subsequent processing process and can meet the needs of high-end packaging paper, such as the production of pillow base paper. In addition, the pretreatment step can significantly reduce the impurity content entering the pulping chamber 8, thereby reducing the wear rate of the pulping unit 9 and prolonging the service life of the equipment. At the same time, after pretreatment, the pulp directly enters the pulping treatment device 46 through the pipeline, reducing the time loss in the intermediate links and improving the efficiency of the overall production line. Since most of the large-particle impurities are removed by pretreatment, the energy consumption required by the pulping unit 9 during operation is reduced, thereby reducing the energy consumption of the entire production process.

[0051] like Figure 2 As shown, a baffle plate 10 is arranged in the processing chamber 3, and the baffle plate 10 separates the processing chamber 3 into an upper screening chamber 11 and a lower receiving chamber 12 along the height direction. The middle part of the baffle plate 10 is a screen structure 13, the receiving chamber 12 is connected to the liquid inlet pipe 4, the screening chamber 11 is connected to the screening pipe, and the processing component 6 is arranged in the screening chamber 11.

[0052] The slurry enters the receiving chamber 12 at the bottom through the liquid inlet pipe 4 connected to the processing chamber 3. The heavier impurities in the slurry are deposited in the receiving chamber 12. At the same time, the setting of the screen structure 13 of the baffle plate 10 can prevent the slurry from bringing in a certain amount of heavier impurities when it quickly enters the screening chamber 11 when the slurry flow rate is high.

[0053] like Figure 2 As shown, the processing component 6 includes a cylindrical sieve plate 14 fixedly connected to the baffle plate 10, the sieve plate 14 surrounds the outer side of the screen structure 13 in the middle of the baffle plate 10 and is arranged above the baffle plate 10, the bottom of the sieve plate 14 is fixedly connected to the baffle plate 10, and the top extends upward and is connected to the top wall of the screening chamber 11, the sieve plate 14 is provided with a screening channel 15, and the inner side of the sieve plate 14 is provided with a driving unit 16 that can generate centrifugal force on the slurry.

[0054] It can ensure that the slurry that passes through the screen structure 13 on the stop plate 10 and enters the screening chamber 11 enters the inner side of the screen plate 14 , and ensure that the slurry can leave the screening chamber 11 only after being screened by the screen plate 14 .

[0055] like Figure 2 and Figure 3As shown, the driving unit 16 includes a driving roller 17, which is rotatably arranged in the screening chamber 11 along the central axis direction of the screening chamber 11, one end of the driving roller 17 passes through the screening chamber 11 and is transmission-connected to a first motor 18, the first motor 18 is fixedly connected to the top of the processing chamber 2, and two connecting seat plates 19 are arranged on the driving roller 17 away from each other, the connecting seat plates and the driving roller 17 are fixedly connected, and the two connecting seat plates 19 are provided with spiral strips 20 around the circumference of the driving roller 17.

[0056] The first motor 18 drives the connecting seat plate 19 and the spiral strip plate 20 to rotate, generating a centrifugal force on the slurry in the screening chamber 11, and prompting the slurry to pass through the screen plate 14 with the screening channel 15 for screening. Figure 4 As shown, the screening channel 15 is preferably a strip-shaped screening slot arranged obliquely, and the size of the screening channel 15 is set according to production requirements.

[0057] like Figure 2 As shown, an impurity discharge pipe 21 is provided in the bottom of the receiving chamber 12, and an impurity removal unit 22 is provided in the receiving chamber 12. The impurity removal unit 22 includes an impurity removal roller 23 rotatably arranged in the receiving chamber 12 along the central axis of the receiving chamber 12, and an "S"-shaped impurity removal plate 24 is fixedly provided on the impurity removal roller 23. One end of the impurity removal roller 23 passes through the bottom wall of the receiving chamber 12 and is transmission-connected to a second motor 25. The second motor 25 is fixedly connected to the bottom of the processing chamber 2.

[0058] Impurities with heavier mass and larger volume can quickly settle in the receiving chamber 12 after entering the processing chamber 3, which can prevent these impurities from entering the upper screening chamber 11 and causing wear on the processing unit and easily clogging the screen plate 14, thereby extending the service life of the equipment and avoiding shutdown to deal with corresponding faults. Both the above-mentioned impurities and the light impurities that enter the screening chamber 11 and are screened will eventually settle to the bottom wall of the receiving chamber 12. The impurity removal unit 22 and the impurity discharge pipe 21 are provided to prevent a large amount of impurities from accumulating and to discharge the deposited impurities in time, thereby preventing the volume of the slurry contained in the processing chamber 3 from being reduced and ensuring the screening efficiency. The switch valve provided at the impurity discharge pipe 21 is omitted in the figure. When the impurity removal unit 22 is started, it is opened to ensure that the impurities leave the receiving chamber 12 from the impurity discharge pipe 21.

[0059] like Figure 5As shown, the outer shell 7 includes a left shell 26 and a right shell 27, the refining unit 9 includes a left refining plate 29 and a right refining plate 30 arranged in the refining chamber 8, and opposite refining teeth 41 are arranged on the left refining plate 29 and the right refining plate 30, a refining channel 28 is left between the left refining plate 29 and the right refining plate 30, the right refining plate 30 is arranged on a first refining fixed plate 31 connected to the right shell 27, the left refining plate 29 is fixedly arranged on a second refining fixed plate 32, the second refining fixed plate 32 is coaxially connected with a refining shaft 33, the refining shaft 33 passes through the left shell 26 and is transmission-connected to a third motor 34, and the third motor 34 is connected to a base 35 through a fixing seat 36.

[0060] The left shell 26 and the right shell 27 are buckled to form a housing 7, which can be threaded or one side can be threaded and the other side can be hinged. The pulp enters the refining chamber 8 from the pulp inlet pipe 37 set at the upper end of the shell, and passes through the refining channel 28 set between the left refining plate 29 and the right refining plate 30. The third motor 34 is started to drive the left refining plate 29 to rotate, and cooperate with the right refining plate 30 to refine the pulp. In this embodiment, the right refining plate 30 is fixedly connected to the right shell 27 through the first refining fixed plate 31. In other embodiments, it can be set to rotate, for example, a motor is set on the right shell 27, and the output end of the motor passes through the shell and is coaxially fixedly connected to the first refining fixed plate 31, driving the right refining plate 30 to rotate in the opposite direction to the left refining plate 29, further improving the refining effect. Since the refining teeth 41 of the left refining plate 29 and the right grinding plate are in opposite directions, the pulp will be subjected to shear forces in different directions when passing through, which is conducive to the dispersion and brooming of the fibers, making the pulp more delicate and uniform. High-quality pulp is essential for the production of high-end packaging papers such as pillowcase base paper.

[0061] like Figure 5-Figure 7 As shown, any of the left refining plate 29 or the right refining plate 30 is provided with an inner grinding layer plate 39 and an outer grinding layer plate 40 along the radial direction of the refining plate. The inner grinding layer plate 39 and the outer grinding layer plate 40 are both circumferentially arranged on the refining fixed plate. The refining teeth 41 arranged on the inner grinding layer plate 39 and the refining teeth 41 arranged on the outer grinding layer plate 40 are in opposite directions and are both arc-shaped strip structures.

[0062] The inner grinding plate 39 and the outer grinding plate 40 are both provided with grinding teeth 41 in opposite directions. This design allows the pulp to be ground more evenly and comprehensively when passing through, thereby improving the grinding efficiency. At the same time, the grinding teeth 41 with arc-shaped strip structures increase the contact area with the pulp, further improving the grinding effect.

[0063] like Figure 6 and Figure 7As shown, a first gap 42 is provided between two adjacent inner grinding plates 39 or two adjacent outer grinding plates 40, and a second gap is provided between the inner grinding plates 39 and the outer grinding plates 40. Both the inner grinding plates 39 and the outer grinding plates 40 are threadedly connected to the pulping fixing plate.

[0064] The setting of the first gap and the second gap, the appropriate gap can promote the flow of materials between the grinding layers, thereby increasing the grinding area, the threaded connection is stable and reliable, and the modular setting of the refining plate can be maintained and replaced accordingly according to the wear conditions, which also helps to reduce energy consumption. The more reasonable spatial layout reduces friction resistance, thereby improving overall work efficiency.

[0065] like Figure 5 As shown, a pulp outlet 38 is provided at the bottom of the shell, and a pulp discharge pipe 44 is provided at the pulp outlet 38. The pulp discharge pipe 44 is a hollow cylinder with a small upper part and a large lower part. The upper part of the pulp discharge pipe 44 is connected with the pulping chamber 8 through the pulp outlet 38, and the lower part is fixedly arranged on the base 35. The base 35 is provided with a through opening 45 corresponding to the lower part of the pulp discharge pipe 44.

[0066] The setting of the slurry introduction and discharge pipe 44 being larger at the top and smaller at the bottom can effectively prevent the refined slurry from being sprayed when passing through the slurry outlet 38. In the embodiment, the bottom support feet of the base 35 and the bottom receiving container are not drawn in the figure, and a pipeline can also be directly set at the slurry outlet 38 to transfer the slurry.

[0067] The invention also includes a method for using the above-mentioned pulping device for producing pillow base paper, comprising the following steps:

[0068] S1: Slurry introduction, the slurry is passed into the slurry pretreatment device 1;

[0069] S2: impurity precipitation, heavy impurities can settle in the receiving chamber 12 after entering the processing chamber 3;

[0070] S3: impurity screening, starting the driving unit 16 to screen the slurry entering the screening chamber 11;

[0071] S4: refining, the pulp from the pulp pretreatment device 1 after impurities removal is passed into the refining treatment device 46, the refining unit 9 is started, the pulp passed into the refining chamber 8 is refined, and the refined pulp is discharged from the bottom pulp outlet 38;

[0072] The impurity removal unit 22 in the receiving chamber 12 is activated when a certain amount of impurities are deposited, and helps the impurities to be discharged from the impurity discharge pipe 21 .

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A pulping device for pillow base paper production, characterized in that: include: A slurry pretreatment device (1), the slurry pretreatment device (1) comprising a treatment chamber (2), a treatment chamber (3) being arranged in the treatment chamber (2), a liquid inlet pipe (4) and a liquid outlet pipe (5) being arranged in communication with the treatment chamber (3), a treatment component (6) being arranged in the treatment chamber (3), and the treatment component (6) being capable of removing large particle impurities in the slurry passing through the treatment chamber (3); A pulping treatment device (46), the pulping treatment device (46) comprising a shell (7) arranged on a base (35), a pulping chamber (8) being arranged in the shell (7), a pulping inlet pipe (37) and a pulping outlet (38) being arranged in communication with the pulping chamber (8), and a pulping unit (9) being arranged in the pulping chamber (8); The pulp pretreatment device (1) and the pulping treatment device (46) are connected via a pipeline, and after the pulp is pretreated in the treatment chamber (2), it enters the pulping treatment device (46) through the pipeline for pulping.

2. The pulping device for pillow base paper production according to claim 1, characterized in that: A stop plate (10) is arranged in the processing chamber (3), and the stop plate (10) separates the processing chamber (3) into an upper screening chamber (11) and a lower receiving chamber (12) along the height direction. The middle part of the stop plate (10) is a screen structure (13). The receiving chamber (12) is connected to a liquid inlet pipe (4), and the screening chamber (11) is connected to a screening pipe. The processing component (6) is arranged in the screening chamber (11).

3. The pulping device for pillow base paper production according to claim 2, characterized in that: The processing assembly (6) comprises a cylindrical sieve plate (14) fixedly connected to the baffle plate (10); the sieve plate (14) surrounds the outer side of the screen structure (13) in the middle of the baffle plate (10) and is arranged above the baffle plate (10); the bottom of the sieve plate (14) is fixedly connected to the baffle plate (10); the top extends upward and is connected to the top wall of the screening chamber (11); a screening channel (15) is arranged on the sieve plate (14); and a driving unit (16) capable of generating centrifugal force on the slurry is arranged on the inner side of the sieve plate (14).

4. The pulping device for producing pillow base paper according to claim 3, characterized in that: The driving unit (16) comprises a driving roller (17), the driving roller (17) being rotatably arranged in the sieving chamber (11) along the central axis direction of the sieving chamber (11), one end of the driving roller (17) passing through the sieving chamber (11) and being transmission-connected to a first motor (18), the first motor 1 (8) being fixedly connected to the top of the processing chamber (2), two connecting seat plates (19) being arranged on the driving roller (17) at a distance from each other, the connecting seat plates and the driving roller (17) being fixedly connected, and the two connecting seat plates (19) being arranged with spiral strip plates (20) around the circumference of the driving roller (17).

5. The pulping device for pillow base paper production according to claim 2, characterized in that: An impurity discharge pipe (21) is arranged in communication with the bottom of the receiving chamber (12), and an impurity discharge unit (22) is arranged in the receiving chamber (12). The impurity discharge unit (22) comprises an impurity discharge roller (23) which is arranged in the receiving chamber (12) and is rotatable along the central axis of the receiving chamber (12), an "S"-shaped impurity discharge plate (24) is fixedly arranged on the impurity discharge roller (23), one end of the impurity discharge roller (23) passes through the bottom wall of the receiving chamber (12) and is transmission-connected to a second motor (25), and the second motor (25) is fixedly connected to the bottom of the processing chamber (2).

6. The pulping device for producing pillow base paper according to claim 1, characterized in that: The shell (7) comprises a left shell (26) and a right shell (27); the refining unit (9) comprises a left refining plate (29) and a right refining plate (30) arranged in a refining chamber (8); the left refining plate (29) and the right refining plate (30) are provided with opposite refining teeth (41); a refining channel (28) is reserved between the left refining plate (29) and the right refining plate (30); the right refining plate (30) is arranged on a first refining fixed plate (31) connected to the right shell (27); the left refining plate (29) is fixed on a second refining fixed plate (32); the second refining fixed plate (32) is coaxially connected with a refining shaft (33); the refining shaft (33) passes through the left shell (26) and is transmission-connected with a third motor (34); the third motor (34) is connected to a base (35) via a fixing seat (36).

7. The pulping device for producing pillow base paper according to claim 6, characterized in that: Any of the left grinding plate (29) or the right grinding plate (30) is provided with an inner grinding layer plate (39) and an outer grinding layer plate (40) along the radial direction of the grinding plate. The inner grinding layer plate (39) and the outer grinding layer plate (40) are both circumferentially arranged on the grinding fixed plate. The grinding teeth (41) arranged on the inner grinding layer plate (39) and the grinding teeth (41) arranged on the outer grinding layer plate (40) are in opposite directions and are both arc-shaped strip structures.

8. The pulping device for pillow base paper production according to claim 7, characterized in that: A first gap (42) is provided between two adjacent inner grinding layer plates (39) or two adjacent outer grinding layer plates (40), and a second gap (43) is provided between the inner grinding layer plates (39) and the outer grinding layer plates (40). Both the inner grinding layer plates (39) and the outer grinding layer plates (40) are threadedly connected to the pulping fixing plate.

9. The pulping device for producing pillow base paper according to claim 8, characterized in that: The shell body is provided with a pulp outlet (38) at the bottom, and a pulp introduction and discharge pipe (44) is provided at the pulp outlet (38). The pulp introduction and discharge pipe (44) is a hollow cylinder with a small top and a large bottom. The upper part of the pulp introduction and discharge pipe (44) is connected to the pulp refining chamber (8) through the pulp outlet (38), and the lower part is fixedly arranged on the base (35). The base (35) is provided with a through opening (45) corresponding to the lower part of the pulp introduction and discharge pipe (44).

10. A method for using the pulping device for pillow base paper production according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Slurry introduction, the slurry is passed into the slurry pretreatment device (1); S2: impurity precipitation, where heavy impurities can settle in the receiving chamber (12) after entering the processing chamber (3); S3: impurity screening, starting the driving unit (16) to screen the slurry entering the screening chamber (11); S4: refining, the pulp that has been cleaned from the pulp pretreatment device (1) is passed into the refining treatment device (46), the refining unit (9) is started, the pulp that has been passed into the refining chamber (8) is refined, and the refined pulp is discharged from the bottom pulp outlet (38); The impurity removal unit (22) in the receiving chamber (12) is activated when a certain amount of impurities are deposited, thereby helping the impurities to be discharged from the impurity discharge pipe (21).

Images