A refiner and a refiner

Abstract

The present invention relates to a pulping machine and a grinding disc, belonging to the field of pulping technology. The grinding disc includes a static grinding disc and a dynamic grinding disc. The static grinding disc and the dynamic grinding disc each include at least two grinding area sections. Each grinding area section includes grinding teeth and tooth grooves, and the number of grinding teeth and tooth grooves in each grinding area section is different. The direction of the grinding teeth and tooth grooves in each grinding area section is the same as or different from the rotation direction of the grinding disc. The width and depth of the grinding teeth and tooth grooves in each grinding disc section of the dynamic grinding disc are different from the width and depth of the grinding teeth and tooth grooves in each grinding disc section of the static grinding disc. The setting of different sizes of grinding teeth and tooth grooves at corresponding positions of the dynamic grinding disc and the static grinding disc can significantly increase the sufficient supply of raw materials at the supply end of the pulping machine, fully knead the raw materials, which is beneficial to improving the bonding strength of the product, improving the raw material processing quality and output, preventing the grinding between the dynamic and static grinding discs, extending the service life of the dynamic and static grinding discs, and reducing energy consumption.

Description

Technical Field

[0001] The present invention belongs to the technical field of refining, and in particular relates to a refiner and a refining plate. Background Art

[0002] The refiner is the main equipment for fiber processing in the process of papermaking, pulping and density board making. Common ones include disc refiners, conical refiners and cylindrical refiners. The refiner is one of the key components on the refiner. The refiners are divided into integral and combined types. The refiners must be composed of two or two groups of refiners relatively combined together to form a pair to work effectively. At least one of the refiners or one group of refiners rotates relative to the other one or another group of static refiners fixed on the equipment under the drive of an external power source. A certain gap is left between the two or two groups of refiners to form a gap in the working part of the refiner. When the material passes through the gap between the refiners, it is cut, decomposed, crushed, etc. to make fiber materials that meet the material index requirements of papermaking and density board production for subsequent use. The raw materials to be processed enter the pulping machine after the preliminary pretreatment and preparation process, and enter the grinding disc from the material supply end. The grinding teeth on the grinding disc are used to cut, decompose and crush the raw materials, and the tooth grooves are used as conveying channels. The dynamic grinding disc and the static grinding disc have the same tooth profile in consideration of the ease and convenience of manufacturing and use. However, due to the difference in the structure of the dynamic grinding disc and the static grinding disc in the equipment, the kinetic energy of the raw materials in the working part of the grinding disc is different. The dynamic grinding disc generates an outward-throwing centrifugal force when rotating, which makes it easy for the raw materials and moisture or gas to pass through the working part of the grinding disc quickly. However, the static grinding disc can only rely on the pressure in the pipeline to promote the flow of raw materials. Relatively speaking, the raw materials pass through slowly, and severe blockage may occur, resulting in poor raw material processing, low output, and the grinding disc being removed from the machine prematurely due to blockage or counter-grinding. In most cases, the raw material supply becomes less and less as the working part of the grinding disc moves toward the outlet. Not only is the production efficiency low, but the fibers are not fully processed and flow out of the tooth grooves, resulting in unsatisfactory fiber processing quality. The grinding disc also has a short service life due to its easy abrasion. The above problems are more likely to occur when the tooth profile width and depth of the dynamic and static grinding discs on the pulping machine are consistent or similar. Summary of the Invention

[0003] In order to overcome the problems existing in the existing technology, the present invention provides a refiner and a refiner to solve the above problems existing in the prior art.

[0004] A refiner refining plate is used for a refiner, wherein the refining plate comprises a static refining plate and a dynamic refining plate.

[0005] The static grinding plate and the dynamic grinding plate each include at least two grinding zone sections, each grinding zone section includes grinding teeth and tooth grooves, and the number of grinding teeth and tooth grooves in each grinding zone section is different;

[0006] The direction of the grinding teeth and tooth grooves in each grinding zone section is the same as or different from the rotation direction of the grinding plate;

[0007] The width and depth of the grinding teeth and tooth grooves of the dynamic grinding plate in each grinding plate section are different from the width and depth of the grinding teeth and tooth grooves of the static grinding plate in each grinding plate section.

[0008] According to the above aspects and any possible implementation, an implementation is further provided, wherein a disconnecting portion or a partitioning portion is provided between each grinding zone segment, and part of the grinding teeth and tooth grooves of each grinding zone segment continue to be connected or disconnected at the disconnecting portion or the partitioning portion.

[0009] According to the above aspects and any possible implementation, an implementation is further provided, wherein the static and dynamic refining plates are divided into a deflaking section, a coarse grinding section and a fine grinding section from the raw material supply end to the outlet end of the refiner.

[0010] According to the aspects described above and any possible implementation, an implementation is further provided, wherein the number of grinding teeth and tooth grooves of the dynamic grinding plate and the static grinding plate in the deburring section and / or the coarse grinding section is the same, and the depth of the tooth grooves of the dynamic grinding plate is 20% or more greater than the depth of the tooth grooves of the static grinding plate; in the fine grinding section, the depth of the tooth grooves of the dynamic grinding plate is the same as the depth of the tooth grooves at the same position of the static grinding plate.

[0011] According to the aspects described above and any possible implementation, an implementation is further provided, wherein the dynamic grinding plate and the static grinding plate have the same number of grinding teeth and tooth grooves in the deburring section and / or the coarse grinding section, and the depth of the tooth grooves of the static grinding plate is 20% or more greater than the depth of the tooth grooves of the dynamic grinding plate; in the fine grinding section, the depth of the tooth grooves of the static grinding plate is the same as the depth of the tooth grooves at the same position of the dynamic grinding plate.

[0012] According to the above aspects and any possible implementation, an implementation is further provided, wherein the depth of the tooth grooves of the dynamic grinding plate in each grinding zone section is 20% or more greater than the depth of the tooth grooves of the static grinding plate at the same position.

[0013] According to the above aspects and any possible implementation, there is further provided an implementation, wherein the depth of the tooth grooves of the static grinding plate in each grinding zone section is 20% or more greater than the depth of the tooth grooves of the dynamic grinding plate at the same position.

[0014] According to the above aspects and any possible implementation, an implementation is further provided, wherein the grinding width of the dynamic grinding plate or the static grinding plate in the deburring section is 3 to 10 mm, and the grinding width in the fine grinding section is 0.8 to 5 mm.

[0015] According to the aspects and any possible implementation methods described above, an implementation method is further provided, wherein the width of the tooth grooves of the dynamic grinding plate or the static grinding plate in the deburring section is 6 to 25 mm, the width of the tooth grooves in the fine grinding section is 1.5 to 8 mm, and the radial width of the fine grinding section is 60 to 130 mm.

[0016] The present invention also provides a refiner, which comprises at least one set of the static refiner and the dynamic refiner.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The shapes and sizes of the grinding teeth and tooth grooves of the working parts of the dynamic grinding disc and the static grinding disc are different, which can adjust the quality of fiber processing and production efficiency of the pulping machine. When the grinding teeth or tooth groove widths of each grinding section of the grinding disc are basically the same or similar, when the depth of the tooth groove of the dynamic grinding disc is greater than the depth of the tooth groove of the static grinding disc at the same position, the supply amount of raw materials at the supply end of the pulping machine can be significantly increased, the raw materials can be fully kneaded, which is beneficial to improve the bonding force of the product, improve the quality and output of raw material processing, prevent the grinding between the dynamic and static grinding discs, and prolong the production process. The service life of the dynamic and static grinding plates is extended, and energy consumption is reduced; the depth of the tooth grooves of the static grinding plates is greater than the depth of the tooth grooves at the same position of the dynamic grinding plates at least in the grinding zone section close to the raw material supply end. In addition to having the above-mentioned functions, it can also increase the throughput in the tooth grooves of the static grinding plates, reduce the hysteresis of the raw material in the tooth grooves of the static grinding plates, make the throughput of the raw material through the static grinding plates and the dynamic grinding plates tend to be consistent, and avoid the dynamic grinding plates from wearing out too quickly and being removed from the machine early. Therefore, the technical solution of the present invention is conducive to the flow of raw materials in the grinding zone section of the grinding plates, improves the slurry refining efficiency, and reduces energy consumption and the consumption of grinding plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structure of the dynamic grinding plate according to an embodiment of the present invention.

[0021] Figure 2 Schematic diagram of the structure of the static grinding plate according to an embodiment of the present invention.

[0022] Figure 3 This is a side sectional view of a dynamic grinding plate according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic structural diagram of a dynamic grinding disc according to another embodiment of the present invention.

[0024] Figure 5 This is a schematic structural diagram of a static grinding plate according to another embodiment of the present invention.

[0025] Figure 6 This is a schematic structural diagram of an integral grinding disc according to an embodiment of the present invention.

[0026] Figure 7 This is a schematic structural diagram of an integral dynamic grinding plate according to an embodiment of the present invention.

[0027] Figure 8This is a schematic structural diagram of an integral static grinding plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] To better understand the technical solutions of the present invention, the present invention includes but is not limited to the specific embodiments described below. Similar technologies and methods should be considered within the scope of protection of the present invention. To further clarify the technical problems, technical solutions, and advantages to be solved by the present invention, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0029] It should be understood that the embodiments described herein are only a portion of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] The refiner refiner of the present invention comprises a static refiner and a dynamic refiner, each of the static refiner and the dynamic refiner comprises at least two grinding zone sections, each grinding zone section comprises grinding teeth and tooth grooves, and the number of grinding teeth and tooth grooves in each grinding zone section is different; the direction of the grinding teeth and tooth grooves in each grinding zone section is the same as or different from the rotation direction of the refiner; the width and depth of the grinding teeth and tooth grooves in each grinding zone section of the dynamic refiner are different from the width and depth of the grinding teeth and tooth grooves in each grinding zone section of the static refiner.

[0031] A disconnecting portion or a dividing portion is provided between each grinding zone segment, and part of the grinding teeth and tooth grooves of each grinding zone segment are continuously connected or disconnected at the disconnecting portion or the dividing portion.

[0032] The static grinding plates and the dynamic grinding plates are divided into a degreasing section, a coarse grinding section and a fine grinding section from the raw material supply end to the outlet end of the refiner.

[0033] The dynamic grinding plate and the static grinding plate have the same number of grinding teeth and tooth grooves in the deburring section and / or the coarse grinding section, and the depth of the tooth grooves of the dynamic grinding plate is 20% or more greater than the depth of the tooth grooves of the static grinding plate; in the fine grinding section, the depth of the tooth grooves of the dynamic grinding plate is the same as the depth of the tooth grooves at the same position of the static grinding plate.

[0034] The dynamic grinding plate and the static grinding plate have the same number of grinding teeth and tooth grooves in the deburring section and / or the rough grinding section, and the depth of the tooth grooves of the static grinding plate is 20% or more greater than the depth of the tooth grooves of the dynamic grinding plate; in the fine grinding section, the depth of the tooth grooves of the static grinding plate is the same as the depth of the tooth grooves at the same position of the dynamic grinding plate.

[0035] Wherein, the depth of the tooth groove of the dynamic grinding plate in each grinding zone section is greater than the depth of the tooth groove of the static grinding plate at the same position by 20% or more.

[0036] Wherein, the depth of the tooth groove of the static grinding plate in each grinding zone section is greater than the depth of the tooth groove of the dynamic grinding plate at the same position by 20% or more.

[0037] The grinding teeth width of the dynamic grinding disc or the static grinding disc in the deburring section is 3 to 10 mm, and the grinding teeth width in the fine grinding section is 0.8 to 5 mm.

[0038] The width of the tooth grooves of the dynamic grinding plate or the static grinding plate in the deburring section is 6 to 25 mm, the width of the tooth grooves in the fine grinding section is 1.5 to 8 mm, and the radial width of the fine grinding section is 60 to 130 mm.

[0039] like Figure 1As shown, a working part 2 of a dynamic grinding plate 1 of a pulping machine grinding plate serves as a sub-plate in the dynamic grinding plate of the pulping machine. The dynamic grinding plate includes multiple sub-plates, and the multiple sub-plates are combined together to form a complete set of dynamic grinding plates. Three mounting holes 41 with hole platforms are provided on the sub-plate for bolt connection with the rotor disk of the pulping machine. From the raw material supply end 21 to the outlet end 22 of the pulping machine, the working part 2 of the grinding plate is divided into 5 annular grinding sections 3, 4, 5, 6 and 7. Sections 3, 4 and 5 are used as degreasing sections, section 6 is used as a coarse grinding section, and section 7 is used as a fine grinding section. The number or width of the grinding teeth 11 or tooth grooves 12 between each annular grinding section 3, 4, 5, 6 and 7 is different, but the number or width of the internal grinding teeth 11 or tooth grooves 12 in each grinding section 3...7 is basically the same. The grinding teeth 11 or tooth grooves 12 are set at an entry angle α from the grinding plate supply end 21 to the outlet end 22 against the rotation direction 23 of the movable grinding plate 1 and the radial direction of the annular grinding section 3...7. The size of the entry angle α affects the passing speed of the raw material, and α is an angle of 0 to 60°. Grinding sections 3, 4, and 5 include fluffier (or crusher) teeth 11 and fluffier tooth grooves 12. The fluffier teeth 11 are wide and sparse, with a width of 3 to 10 mm and a width of 6 to 25 mm for the tooth grooves 12. The coarse grinding teeth 11 and tooth grooves 12 of grinding section 6 are narrower and denser. The width of the coarse grinding teeth 11 and tooth grooves 12 is smaller than that of the fluffier (or crusher) teeth 11 and tooth grooves 12, but larger than that of the fine grinding teeth 11 and tooth grooves 12. The difference in the width of the teeth 11 and tooth grooves 12 between the three grinding sections decreases according to the number of annular grinding sections 3 to 7. A partition 31 is provided between grinding sections 5 and 6, in which more than 50% of the teeth 11 are partially disconnected. A disconnection section 32 is provided between grinding sections 6 and 7, in which all the teeth 11 are completely disconnected. The annular grinding zone section 7 is equipped with fine grinding teeth 11 and tooth grooves 12. The fine grinding teeth 11 are narrower and denser, with a width of 0.8 to 5 mm and a width of 1.5 to 8 mm for the tooth grooves 12. The functions and divisions between the deburring teeth 11 and tooth grooves 12 and the coarse or fine grinding teeth 11 and tooth grooves 12 can be less distinct, clear, or fixed. The annular grinding zone sections 3 to 7, as well as the number or width of the teeth 11 and tooth grooves 12 in each section, can also be determined based on the size of the raw material and the desired final performance after processing, including different incision angles α or differentiating sections 31 and disconnecting sections 32. The depth of the tooth grooves 12 in each annular grinding zone segment 3 ... 7 of the dynamic grinding plate 1 is greater than the depth of the tooth grooves 12' of the static grinding plate at the same position, or is always greater than the depth of the tooth grooves 12' of the static grinding plate 1' from the raw material supply end 21 to the outlet end 22, and is greater than the depth of the tooth grooves 12' of the static grinding plate 1' at the same position by more than 20%.

[0040] The amount of raw materials processed in the grinding section 3 ... 7 of the dynamic grinding disc 1 or the static grinding disc 1' is related to the tooth shape, and more importantly, it is related to the cross-sectional set of the tooth grooves 12, 12' in the grinding section 3 ... 7. In many cases, the supply end 21 of the raw material of the pulping machine grinding disc is in the inner diameter or small end direction of the pulping machine grinding disc, and a raw material distributor is arranged further inward or in the small direction. Therefore, most of the dynamic grinding disc supply end 21 to the outlet end 22 only occupies about one-third of the radial distance of the entire working part 2 of the pulping machine. When the depth of the tooth groove 12 at the outlet end 22 is H and the spatial diameter of the working part 2 is D, the cross-sectional set of the tooth groove 12, the supply end 21 and the outlet end 22 is The difference between the two is 1 / 3πDH≈0.33πDH. In fact, the designers of the grinding discs have already taken this into consideration and often deepen the tooth grooves 12 at the grinding disc supply end 21, typically twice the depth H of the tooth grooves 12 at the outlet end 22. In this case, the difference in the above formula is reduced by one-half, that is, 0.33πDH / 2≈0.165πDH. In this technical solution, the depth of the tooth grooves 12, 12' of the dynamic grinding disc 1 or the static grinding disc 1' at the raw material supply end 21 is 20% or more greater than the depth of the tooth grooves 12, 12' of the static grinding disc 1' or the dynamic grinding disc 1. This ensures sufficient raw material at the outlet end 22 and achieves the desired desired raw material processing effect. Of course, the appropriate depth change size needs to be specifically calculated based on the shape, size, and tooth profile of the refiner disc. The annular grinding zones 3-7 of the dynamic grinding plate 1, or the depth of the tooth grooves 12' of the static grinding plate 1, are always greater than 20% from the raw material supply end 21 to the outlet end 22. This is equivalent to a more than 10% increase in raw material supply at the supply end 21 and a more than 10% increase in output at the outlet end 22. This benefit is very significant in the production process of a fiber material processing plant of a certain scale. The depth of the tooth grooves 12 for deburring is more commonly 5-10 mm (the depth of the tooth grooves 12 is equivalent to the height of the grinding teeth 11). If the depth of the tooth grooves 12 increases by 20%, the height of the grinding teeth 11 increases by more than 20%. The grinding teeth 11 are still relatively strong and durable if they are above 6-12 mm in height and do not affect their strength.

[0041] like Figure 2 As shown, the static grinding plate 1' working part 2' of the refiner is a sub-plate in the static grinding plate of the refiner. The static grinding plate includes multiple sub-plates, and the multiple sub-plates are combined together to form a complete set of static grinding plates, and Figure 1The illustrated moving grinding discs 1 form a pair of coordinated working pieces. The working portion 2' of the stationary grinding disc, extending from the raw material supply end 21 to the outlet end 22, is divided into five annular grinding segments 3', 4', 5', 6', and 7'. Each of the annular grinding segments 3'-7' can have the same or different number and width as the moving grinding discs 1, and the differences between the annular grinding segments 3'-7' can also be the same or different from those of the moving grinding discs 1. For example, the annular grinding segments 5' and 6' are connected by a small number of deburring teeth 11' and coarse grinding teeth 11', and do not require that more than 50% or even all of them be disconnected. The depth of the tooth grooves 12' of each annular grinding zone segment 3'...7' of the static grinding plate 1' can be shallower or deeper than the depth of the dynamic grinding plate 1 at the same position in each grinding zone segment 3...7. The depth of the tooth grooves 12' of the static grinding plate 1' is at least 20% or more less than the depth of the tooth grooves 12 at the same position of the dynamic grinding plate 1 at the raw material supply end 21 of the annular grinding zone segment 3' or 3', 4', 5', or at least greater than the depth of the tooth grooves 12 of the dynamic grinding plate 1 at the raw material supply end 21, forming a layout in which the static grinding plate 1' is deep and the dynamic grinding plate 1 is shallow, thereby increasing the throughput of raw material at the tooth grooves 12' of the static grinding plate 1', reducing the hysteresis of raw material in the tooth grooves 12' of the static grinding plate 1', making the throughput of raw material passing through the static grinding plate 1' and the dynamic grinding plate 1 consistent, avoiding the dynamic grinding plate 1 from being worn out too quickly and being removed from the machine prematurely, and also achieving the effect of the technical solution of the present utility model. At least one of the radial widths of the static grinding plate 1' and the outermost annular grinding zone section 7' ​​of the dynamic grinding plate 1 near the outlet end and the annular grinding zone section 7 is between 60 and 130 mm, so as to improve the pulping efficiency and adjust the energy consumption while ensuring the quality of fiber processing.

[0042] like Figure 3 The figure shows a side cross-sectional view of a dynamic refiner plate 1. The working portion 2 has grinding teeth 11 and tooth grooves 12. The bottom 16 of the tooth grooves 12, on the side of the dynamic refiner plate 1 opposite the working portion 2, serves as a mounting datum surface 43 for the dynamic refiner plate 1. This surface is bolted to the refiner rotor disc via mounting holes 41. At least at the bottom 16 of the fluffier tooth grooves 12 in each grinding zone section of the dynamic refiner plate 1 near the stock supply end 21 and grinding zone section 3, the fluffier tooth grooves 12 are deeper than the bottom 15' of the fluffier tooth grooves 12' in the static refiner plate 1' at the same location. Alternatively, the depth of the fluffier tooth grooves 12' is consistently greater than the depth of the static refiner plate 1' tooth grooves 12' from the stock supply end 21 to the outlet end 22.

[0043] like Figure 4As shown, another refiner refiner has a working portion 2 of a movable refiner 1, which includes two refining sections 3 and 4. The teeth 11 and tooth grooves 12 of the annular refining section 3 near the raw material supply end 21 are relatively large, such as 8-10 mm in width for the teeth 11 and 20-25 mm in width for the tooth grooves 12, or perhaps even larger, for crushing wood blocks and large fiber bundles. The teeth 11 and tooth grooves 12 of the refining section 4 have widths of 0.8-5 mm and 1.5-8 mm, respectively. The teeth 11 and tooth grooves 12, from the refining section supply end 21 to the outlet end 22, are arranged to form an angle α with the radial direction of the annular refining section 4, counter to the direction of rotation 23 of the movable refiner 1. The size of the angle α directly affects production efficiency and fiber processing results, and α is 0-60°. Grinding section 3 is separated from grinding section 4 by a disconnected portion 32. The ends of the grinding teeth 11 and tooth grooves 12 are arranged unevenly to facilitate the entry of raw material into grinding section 4. The depth of the tooth grooves 12 in each grinding section of the dynamic grinding plate 1 is greater than the depth of the tooth grooves 12' of the static grinding plate 1' at least in the grinding section 3 near the raw material supply end 21. Alternatively, the depth may be equal at the outlet end 22, or greater than the depth of the tooth grooves 12' of the static grinding plate 1' from the raw material supply end 21 to the outlet end 22, and may be at least 20% greater than the depth of the tooth grooves 12' of the static grinding plate 1' at the same location.

[0044] like Figure 5 As shown, another type of refiner refiner has a stationary refiner 1' working part 2', which includes three grinding zone sections 3', 4' and 5'. The tooth shape is basically the same as Figure 4 The tooth profiles of the working parts 2 of the dynamic grinding disc 1 are similar, and a disconnection portion 32' is provided between 3' and 4' and between 4' and 5', so that the grinding teeth 11' for fine grinding are disconnected to form the grinding section 4' and the grinding section 5'. The widths of the grinding teeth 11' and the tooth grooves 12' on the grinding section 4' and the grinding section 5' can be the same or different according to the requirements of the substrate to be processed by the fiber. The tooth profile of the working part 2' of the static grinding disc 1' can be the same or different from the tooth profile of the working part 2 of the dynamic grinding disc 1, but the depth of the tooth grooves 12' of the grinding section of the static grinding disc 1' is shallower than the depth of the tooth grooves 12' of the dynamic grinding disc 1 at the same position in each grinding section, or conversely, it is greater than the depth of the tooth grooves 12 of the dynamic grinding disc 1 by 20% or more at least at the raw material supply end 21, thereby increasing the throughput in the tooth grooves 12' of the static grinding disc 1' and making the raw material throughput through the static grinding disc 1' and the dynamic grinding disc 1 tend to be consistent.

[0045] like Figure 6As shown, a working part 2 of an integral dynamic grinding plate 1 of a pulping machine grinding plate is composed of several sector structures. Each sector structure can be divided into several annular grinding area segments 3, 4, 5 and 6 due to the different number of grinding teeth 11. The width of the grinding teeth 11 and the tooth grooves 12 in each grinding area segment can be the same, but the depth of the tooth grooves 12 and the tooth grooves 12' of the static grinding plate 1' used therewith are different, at least at the raw material supply end 21, which is 20% deeper or shallower or more.

[0046] like Figure 7 As shown, a working portion 2 of an integral movable refiner 1 for use with a refiner comprises annular grinding sections 3, 4, and 5. Deflaking teeth 11 and fluffering tooth grooves 12 are arranged near the material supply end 21. At the outlet end 22, two coarse and fine grinding teeth 11 and tooth grooves 12, each with an angle β different from the radial angle α, form annular grinding sections 4 and 5, respectively. The direction of angle β is opposite to that of angle α and is the same as the rotation direction 23 of the refiner. The values ​​of β and α can be the same or less than α. From the supply end 21 to the outlet end 22, the teeth 11 or tooth grooves 12, facing the radial direction of the annular grinding sections 3 and 4, form an angle α against the rotation direction 23 of the movable refiner 1. This facilitates the pumping of material into the working portion 2. In the annular grinding section 5, the teeth 11 or tooth grooves 12 form a holding angle β opposite to the radial direction of the annular grinding sections 3 and 4, extending the time the material remains in the working portion 2 and ensuring its full processing. The annular grinding zone section 3 having the deburring teeth 11 and the deburring tooth grooves 12 is distinguished from the annular grinding zone section 4 by a disconnection portion 32. The depth of the tooth grooves 12 is greater than or less than the depth of the tooth grooves 12' of the static grinding plate 1' at least at the same position of the annular grinding zone section 3 near the raw material supply end 21 by 20% or more.

[0047] like Figure 8 As shown, a working portion 2' of an integral static refining plate 1' of a pulping machine refining plate includes annular refining sections 3', 4' and 5', and toward the outlet end 22, there are two refining sections 4' and 5' with different angles β radially intersecting the annular refining section 3 at an angle α. The annular grinding zone section 3' having the debonding grinding teeth 11' and the debonding tooth grooves 12' is separated from the annular grinding zone section 4' by a partition 31'. Part of the debonding grinding teeth 11' is connected to the coarse and fine grinding grinding teeth 11'. The tooth profile of the working portion 2' of the static grinding plate 1' can be different from that of the dynamic grinding plate 1, but the depth of the tooth grooves 12' is less than or greater than the depth of the tooth grooves 12 of the dynamic grinding plate 1 by 20% or more at least at the same position of the annular grinding zone section 3' near the raw material supply end 21. The depth greater than the tooth grooves 12 of the dynamic grinding plate 1 can increase the throughput in the tooth grooves 12' of the static grinding plate 1', improve production, and reduce wear of the dynamic grinding plate 1.

[0048] The foregoing description shows and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein by the teachings above or by techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the appended claims.

Claims

1. A refiner plate, characterized in that: The grinding discs include static grinding discs and dynamic grinding discs. The static grinding plate and the dynamic grinding plate each include at least two grinding zone sections, each grinding zone section includes grinding teeth and tooth grooves, and the number of grinding teeth and tooth grooves in each grinding zone section is different; The direction of the grinding teeth and tooth grooves in each grinding zone section is different from the rotation direction of the grinding plate; The width and depth of the grinding teeth and tooth grooves of the dynamic grinding plate in each grinding plate section are different from the width and depth of the grinding teeth and tooth grooves of the static grinding plate in each grinding plate section; The static grinding plates and the dynamic grinding plates are divided into a degreasing section, a coarse grinding section and a fine grinding section from the raw material supply end to the outlet end of the refiner; A section where more than 50% of the grinding teeth are partially disconnected is provided between the decompression section and the grinding section of the dynamic grinding plate, and a disconnection section where all the grinding teeth are completely disconnected is provided between the grinding section and the fine grinding section; The dynamic grinding plate and the static grinding plate have the same number of grinding teeth and tooth grooves in the deburring section and / or the coarse grinding section, and the depth of the tooth grooves of the static grinding plate is 20% greater than the depth of the tooth grooves of the dynamic grinding plate; in the fine grinding section, the depth of the tooth grooves of the dynamic grinding plate is the same as the depth of the tooth grooves at the same position of the static grinding plate.

2. The refiner plate according to claim 1, characterized in that: A disconnecting portion or a partitioning portion is provided between the respective grinding zone segments, and a portion of the grinding teeth and tooth grooves of each grinding zone segment are disconnected at the disconnecting portion or the partitioning portion.

3. The refiner plate according to claim 1, characterized in that: The grinding teeth width of the dynamic grinding plate or the static grinding plate in the deburring section is 3 to 10 mm, and the grinding teeth width in the fine grinding section is 0.8 to 5 mm.

4. The refiner plate according to claim 1, characterized in that: The width of the tooth grooves of the dynamic grinding plate or the static grinding plate in the deburring section is 6-25 mm, the width of the tooth grooves in the fine grinding section is 1.5-8 mm, and the radial width of the fine grinding section is 60-130 mm.

5. A refiner, characterized in that: The refiner comprises at least one set of static refining plates and dynamic refining plates according to any one of claims 1 to 4.

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