CN115976869A

CN115976869A - Pulping machine and grinding disc

Info

Publication number: CN115976869A
Application number: CN202211742087.0A
Authority: CN
Inventors: 臧田良; 臧秉清; 施晓刚
Original assignee: Dandong Yalu River Refining Plate Co ltd
Current assignee: Dandong Yalu River Refining Plate Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-04-18

Abstract

The invention relates to a pulping machine and a grinding plate, belonging to the technical field of pulping, wherein the grinding plate comprises a static grinding plate and a movable grinding plate, the static grinding plate and the movable grinding plate respectively comprise at least two grinding zone sections, each grinding zone section comprises grinding teeth and tooth grooves, and the grinding teeth and the tooth grooves of each grinding zone section are different in quantity; the direction of grinding teeth and tooth grooves of each grinding zone section is the same as or different from the rotating direction of the grinding sheet; the width and depth of the teeth and tooth grooves of the movable blade in each blade section are different from the width and depth of the teeth and tooth grooves of the static blade in each blade section. The arrangement of the movable grinding sheet and the static grinding sheet in different sizes of the grinding teeth and the tooth grooves at the corresponding positions can obviously increase the sufficient supply amount of raw materials at the supply end part of the pulping machine, fully rub the raw materials, be favorable for improving the binding force of products, improve the processing quality and yield of the raw materials, prevent the opposite grinding between the movable grinding sheet and the static grinding sheet, prolong the service life of the movable grinding sheet and the static grinding sheet and reduce the energy consumption.

Description

Pulping machine and grinding disc

Technical Field

The invention belongs to the technical field of pulping, and particularly relates to a pulping machine and a grinding plate.

Background

The refiner is the main equipment for fiber treatment in the process of papermaking pulping and density board manufacturing, the common refiner is disc refiner, conical refiner, cylindrical refiner and the like, the refiner is one of key elements on the refiner, the refiner is divided into whole and combined, the refiner must be formed into a pair by relatively combining two or two groups of refiners to effectively work, at least one movable refiner disc or one group of refiner discs driven by an external power source rotates relative to the other fixed refiner disc or the other group of static refiner disc, a certain gap is left between the two or two groups of refiner discs to form a refiner disc working part gap, materials are cut off, decomposed, crushed and the like when passing through the gap between the refiner discs, and the fiber materials meeting the index requirements of papermaking and density board production materials are manufactured for subsequent use. Raw materials to be processed enter a refiner after the pretreatment and preparation processes in the previous stage, the raw materials enter a refiner plate from a material supply end, the refining teeth on the refiner plate are used for cutting, decomposing and crushing the raw materials, tooth grooves are used as a conveying channel, and the movable refiner plate and the static refiner plate are in the same tooth shapes in consideration of easy and convenient manufacture and use. In most cases, the supply of raw material is insufficient for the working part of the refiner plate to the outlet, not only the production efficiency is not high, the fiber is not fully processed and flows off from the tooth space, the quality of fiber processing is not ideal, the refiner plate is short in service life due to easy grinding, and the problems are more easily caused when the tooth form width and depth of the movable refiner plate and the static refiner plate of the refiner plate on the refiner plate are consistent or similar.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a refiner and a grinding plate to solve the problems in the prior art.

A refiner plate for a refiner, the plate comprising a static plate and a dynamic plate,

the static grinding sheet and the dynamic grinding sheet respectively comprise at least two grinding area sections, each grinding area section comprises grinding teeth and tooth grooves, and the number of the grinding teeth and the tooth grooves of each grinding area section is different;

the direction of grinding teeth and tooth grooves of each grinding zone section is the same as or different from the rotating direction of the grinding sheet;

the width and depth of the teeth and the tooth grooves of the movable abrasive sheet in each sheet section are different from the width and depth of the teeth and the tooth grooves of the static abrasive sheet in each sheet section.

The above aspect and any possible implementation further provides an implementation in which a disconnection portion or a division portion is provided between the respective grinding zone segments, and a part of the grinding teeth and tooth grooves of the respective grinding zone segments are continuously connected or disconnected at the disconnection portion or the division portion.

The above aspect and any possible implementation further provide an implementation in which the static and dynamic refiner plates are divided into a fluffing section, a rough grinding section, and a fine grinding section from a raw material supply end to an outlet end of the refiner.

The above aspects and any possible implementation manners further provide an implementation manner, the number of grinding teeth and tooth grooves of the movable grinding sheet and the static grinding sheet in the fluffing section or/and the rough grinding section is the same, and the depth of the tooth grooves of the movable grinding sheet is greater than the depth of the tooth grooves of the static grinding sheet by 20% or more; in the refining section, the depth of the tooth grooves of the movable refining plate is the same as that of the tooth grooves of the static refining plate at the same position.

The above aspects and any possible implementation manners further provide an implementation manner, the number of grinding teeth and tooth grooves of the movable grinding sheet and the static grinding sheet in the fluffing section or/and the rough grinding section is the same, and the depth of the tooth grooves of the static grinding sheet is greater than the depth of the tooth grooves of the movable grinding sheet by 20% or more; in the refining section, the tooth grooves of the static refining plate have the same depth as the tooth grooves of the movable refining plate at the same position.

The above aspect and any possible implementation further provide an implementation in which the depth of the tooth grooves of the movable grinding plate in each grinding zone section is 20% or more greater than the depth of the tooth grooves of the stationary grinding plate at the same position.

The above aspect and any possible implementation further provide an implementation in which the depth of the tooth grooves of the static abrasive sheet at each wear zone section is 20% or more greater than the depth of the tooth grooves of the dynamic abrasive sheet at the same position.

The above aspect and any possible implementation manner further provide an implementation manner that the tooth width of the movable plate or the static plate in the defibering section is 3 to 10mm, and the tooth width in the refining section is 0.8 to 5mm.

The above aspect and any possible implementation further provide an implementation that the width of the tooth grooves of the movable or static refining plate in the defibering section is 6 to 25mm, the width of the tooth grooves in the refining section is 1.5 to 8mm, and the radial width of the refining section is 60 to 130mm.

The invention also provides a refiner, which comprises at least one group of static refining discs and dynamic refining discs.

Compared with the prior art, the invention has the following beneficial effects:

compared with the prior art, the invention has the following advantages:

the shapes and sizes of the grinding teeth and the tooth spaces of the working parts of the movable grinding sheet and the static grinding sheet are different, so that the fiber treatment quality and the production efficiency of the refiner can be adjusted, under the condition that the widths of the grinding teeth or the tooth spaces of each grinding section of the grinding sheet are basically the same or similar, when the depth of the tooth spaces of the movable grinding sheet is greater than that of the tooth spaces at the same positions of the static grinding sheet, the sufficient supply of raw materials at the supply end part of the refiner can be obviously increased, the raw materials can be fully kneaded, the bonding force of products can be improved, the raw material treatment quality and yield can be improved, the opposite grinding between the movable grinding sheet and the static grinding sheet can be prevented, the service life of the movable grinding sheet and the static grinding sheet can be prolonged, and the energy consumption can be reduced; the depth of the tooth grooves of the static grinding disc is larger than that of the tooth grooves at the same position of the movable grinding disc at least in the grinding area section close to the raw material supply end, and besides the functions, the tooth grooves of the static grinding disc can increase the throughput, reduce the delay of raw materials in the tooth grooves of the static grinding disc, enable the throughput of the raw materials passing through the static grinding disc and the movable grinding disc to be consistent, and avoid the movable grinding disc from being worn too fast and getting off in advance.

Drawings

FIG. 1 is a schematic structural view of a dynamic grinding sheet according to an embodiment of the invention.

Fig. 2 is a schematic structural diagram of a static abrasive sheet according to an embodiment of the invention.

FIG. 3 is a side cross-sectional view of a dynamic refiner plate according to an embodiment of the invention.

Fig. 4 is a schematic structural diagram of a dynamic grinding sheet according to another embodiment of the invention.

Fig. 5 is a schematic structural diagram of a static abrasive sheet according to another embodiment of the invention.

Fig. 6 is a schematic structural view of an integral grinding sheet according to an embodiment of the invention.

Fig. 7 is a schematic structural diagram of an integral dynamic grinding sheet according to an embodiment of the invention.

Fig. 8 is a schematic structural view of an integral static grinding plate according to an embodiment of the invention.

Detailed Description

In order to better understand the technical solution of the present invention, the present disclosure includes but is not limited to the following detailed description, and similar techniques and methods should be considered as within the scope of the present invention. To make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

It should be understood that the described embodiments of the invention are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The refiner plate comprises a static refiner plate and a dynamic refiner plate, wherein each of the static refiner plate and the dynamic refiner plate comprises at least two refining zone sections, each refining zone section comprises refining teeth and tooth grooves, and the quantity of the refining teeth and the tooth grooves of each refining zone section is different; the direction of grinding teeth and tooth grooves of each grinding zone section is the same as or different from the rotating direction of the grinding sheet; the width and depth of the teeth and the tooth grooves of the movable abrasive sheet in each sheet section are different from the width and depth of the teeth and the tooth grooves of the static abrasive sheet in each sheet section.

Wherein, be provided with disconnection portion or differentiation between each grinding zone section, some grinding teeth and tooth's socket of each grinding zone section continue to connect or break at disconnection portion and differentiation.

Wherein the static and dynamic refiner plates are divided into a fluffing section, a rough grinding section and a fine grinding section from a raw material supply end to an outlet end of the refiner.

The number of grinding teeth and tooth grooves of the movable grinding sheet and the static grinding sheet in the fluffing section or/and the rough grinding section is the same, and the depth of the tooth grooves of the movable grinding sheet is 20% or more greater than that of the tooth grooves of the static grinding sheet; in the refining section, the depth of the tooth grooves of the movable refining plate is the same as that of the tooth grooves of the static refining plate at the same position.

The number of grinding teeth and tooth grooves of the movable grinding sheet and the static grinding sheet in the fluffing section or/and the rough grinding section is the same, and the depth of the tooth grooves of the static grinding sheet is 20% or more greater than that of the tooth grooves of the movable grinding sheet; in the refining section, the tooth grooves of the static refining plate have the same depth as the tooth grooves of the movable refining plate at the same position.

Wherein the depth of the tooth grooves of the movable grinding sheet in each grinding zone section is 20% or more greater than that of the tooth grooves of the static grinding sheet at the same position.

Wherein the depth of the tooth grooves of the static grinding sheet in each grinding zone section is 20 percent or more greater than the depth of the tooth grooves of the movable grinding sheet at the same position.

Wherein the tooth width of the movable grinding plate or the static grinding plate in the fluffing section is 3-10 mm, and the tooth width of the movable grinding plate or the static grinding plate in the refining section is 0.8-5 mm.

Wherein, the width of the tooth grooves of the movable grinding sheet or the static grinding sheet in the fluffing 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.

As shown in fig. 1, a working part 2 of a movable grinding plate 1 of a refiner plate, as one sub-plate of the movable grinding plate of the refiner, the movable grinding plate comprises a plurality of sub-plates which form a complete set of movable grinding plates by combining together, and the sub-plate is provided with mounting holes 41 with three perforated platforms for connecting bolts with a rotor disc of the refiner. The working section 2 of the refiner plate from the raw material supply end 21 to the outlet end 22 of the refiner is divided into 5 annular

refining zone sections

3,4,5,6 and 7,

sections

3,4 and 5 are fluffing sections, section 6 is a rough grinding section, section 7 is a fine grinding section, the number or width of the grinding teeth 11 or tooth grooves 12 between each annular

refining zone section

3,4,5,6 and 7 is different, but the number or width of the grinding teeth 11 or tooth grooves 12 inside each refining zone section 3 … 7 is basically the same, the grinding teeth 11 or tooth grooves 12 are arranged opposite to the rotation direction 23 of the movable refiner plate 1 from the plate supply end 21 to the outlet end 22 and form a cutting angle alpha with the radial direction of the annular refining zone section 3 …, the size of the cutting angle alpha influences the passing speed of the raw material, and alpha takes an angle of 0-60 deg. The

grinding zone sections

3,4 and 5 comprise grinding teeth 11 for disintegration (or crushing) and tooth grooves 12 for disintegration, the grinding teeth 11 for disintegration are wide and sparse, the width of the grinding teeth 11 is 3-10 mm, the width of the tooth grooves 12 is 6-25 mm, the grinding teeth 11 for rough grinding and the tooth grooves 12 for grinding zone section 6 are narrow and dense, the width of the grinding teeth 11 for rough grinding and the tooth grooves 12 for rough grinding is smaller than that of the grinding teeth 11 for disintegration (or crushing) and the tooth grooves 12 for fine grinding but larger than that of the grinding teeth 11 for fine grinding and the tooth grooves 12, the width difference between the grinding teeth 11 and the tooth grooves 12 between the three grinding zone sections is reduced progressively according to the number of the annular grinding zone sections 3 …, a dividing part 31 with more than 50% of partial grinding teeth 11 being disconnected is arranged between the

grinding zone sections

5 and 6, and a disconnecting part 32 with all grinding teeth 11 being completely disconnected is arranged between the

grinding zone sections

6 and 7. The annular grinding zone section 7 is provided with grinding teeth 11 for fine grinding and tooth grooves 12, the tooth width of the grinding teeth 11 for fine grinding is narrower and denser, the width of the grinding teeth 11 is 0.8-5 mm, and the width of the tooth grooves 12 is 1.5-8 mm. The functions and divisions of the disintegration-use grinding teeth 11 and the disintegration-use tooth grooves 12 and the rough grinding-use or fine grinding teeth 11 and tooth grooves 12 may not be obvious or clear or fixed, and the number or width of the grinding teeth 11 and tooth grooves 12 in each section, including different cutting angles α or the divisional portions 31 and the broken portions 32, may be determined for each annular grinding zone section 3 … according to the size of the raw material and the index to be finally achieved after the raw material is processed. Wherein, the depth of the tooth grooves 12 in each annular grinding zone section 3 … of the movable grinding sheet 1 is larger than the depth of the tooth grooves 12' of the static grinding sheet at the same position, or the depth of the tooth grooves 12' of the static grinding sheet 1' from the raw material supply end 21 to the outlet end 22 is always larger than the depth of the tooth grooves 12' of the static grinding sheet 1' at the same position by more than 20%.

The amount of material being processed in the refining zone section 3 … of the dynamic refiner plate 1 or the static refiner plate 1 'is related to the tooth profile and, importantly, to the cross-sectional set of the refining zone section 3 … 7 tooth slots 12, 12', in many cases, the material supply end 21 of the refiner plate is also arranged in the direction of the inner or small end of the refiner plate, and then the material distributor is arranged in the inward or outward direction, so that the large section of the refiner plate is divided from the supply end 21 to the outlet end 22 by about one third of the spatial radial distance of the whole refiner working section 2, when the depth of the tooth slot 12 at the outlet end 22 is H and the spatial diameter of the working section 2 is D, the difference between the supply end 21 and the cross-sectional set of the outlet end 22 tooth slots 12, DH 0.33 pi is now, in fact that the problem has been taken into consideration, the tooth slots 12 of the supply end 21 are usually deepened, the depth H of the outlet end 22 is usually 2, in this case, the difference in the above formula is reduced by one half, i.e. by 0.e. DH 0.g. DH 0, the tooth slots 12, and the expected depth of the raw material supply end 12 of the dynamic refiner plate 21 'or static refiner plate is more than the expected 20, 12' of the raw material supply end 12. Of course, the depth variation needs to be measured and calculated according to the shape and size of the refiner plate and the difference of the tooth shape. Each annular grinding zone section 3 … of the movable grinding plate 1 or the depth of each annular grinding zone section from the raw material supply end 21 to the outlet end 22 is always more than 20% of the depth of the tooth grooves 12' of the static grinding plate 1, which is equivalent to the increase of the raw material supply amount by more than 10% at the supply end 21 and the increase of the output amount by more than 10% at the outlet end 22, and the benefit is very considerable in the production process of a fiber material processing factory with a certain scale. The depth of the tooth grooves 12 for common defibering is 5-10 mm (the depth of the tooth grooves 12 is the height of the grinding teeth 11 in a different angle), if the depth of the tooth grooves 12 is increased by 20%, namely the height of the grinding teeth 11 is increased by more than 20%, the grinding teeth 11 are more than 6-12 mm, still are firm and durable, and cannot influence the strength of the grinding teeth.

As shown in fig. 2, the static refiner plate 1 'working part 2' of the refiner plate, as a sub-plate in the static refiner plate, comprises a plurality of sub-plates which form a complete static refiner plate by combining together, and the dynamic refiner plate 1 shown in fig. 1 forms a pair of cooperating parts. The working part 2 'of the static refining disc from the raw material supply end 21 to the outlet end 22 is divided into 5 annular refining zone sections 3',4',5',6 'and 7', each annular refining zone section 3'…' may be the same or different in number or width from the dynamic refining disc 1, and the difference between the annular refining zone sections 3'…' may also be the same or different from the dynamic refining disc 1, such as: the annular grinding zone segments 5 'and 6' are connected by a small portion of the loosening grinding teeth 11 'and the rough grinding teeth 11', and it is not required that more than 50% of the grinding zone segments are mostly or completely disconnected. The depth of each annular grinding zone section 3'…' tooth groove 12 'of the static grinding sheet 1' is smaller or larger than that of the movable grinding sheet 1 at the same position of each grinding zone section 3 …, and the depth of the tooth groove 12 'of the static grinding sheet 1' is at least 20% or more of the depth of the annular grinding zone section 3 'or 3',4',5' of the raw material supply end 21 of the tooth groove 12 at the same position of the movable grinding sheet 1, or at least the depth of the raw material supply end 21 is larger than that of the tooth groove 12 of the movable grinding sheet 1, so that the arrangement of the static grinding sheet 1 'being deep and the movable grinding sheet 1 being shallow is formed, thereby increasing the throughput of raw materials at the tooth grooves 12' of the static grinding sheet 1', reducing the throughput of raw materials in the tooth grooves 12' of the static grinding sheet 1', leading the throughput of raw materials passing through the static grinding sheet 1' to be consistent with that of the movable grinding sheet 1, avoiding the movable grinding sheet 1 from being worn out too fast and being put in advance, and the effect of the technical scheme of the invention can be achieved. At least one of the radial widths of the annular grinding zone section 7' and the annular grinding zone section 7' of the static grinding sheet 1' and the movable grinding sheet 1 close to the outermost end of the outlet end is 60-130 mm, so that the grinding efficiency is improved and the energy consumption is adjusted on the premise of ensuring the quality of fiber treatment.

As shown in fig. 3, which is a side sectional view of the rotor plate 1, the working portion 2 has the grinding teeth 11 and the tooth grooves 12, the bottom portion 16 of the tooth groove 12, and the other side of the rotor plate 1 opposite to the working portion 2 is the mounting reference surface 43 of the rotor plate 1, and is connected to the rotor disc of the refiner by bolts through the mounting holes 41. Each grinding section of the movable grinding plate 1 is deeper than the bottom 16 of the loosening teeth grooves 12 'of the static grinding plate 1' at the same position at least near the bottom 16 of the loosening teeth grooves 12 of the grinding section 3 of the raw material supply end 21, or is always deeper 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.

As shown in fig. 4, another refiner plate working section 2 of a refiner plate comprises two

refining zone segments

3 and 4. The sizes of the grinding teeth 11 and the tooth grooves 12 of the annular grinding zone section 3 close to the raw material supply end 21 are larger, for example, the width of the grinding teeth 11 is 8-10 mm, the width of the tooth grooves 12 is 20-25 mm, and perhaps larger, the grinding teeth 11 and the tooth grooves 12 of the grinding zone section 4 are respectively 0.8-5 mm and 1.5-8 mm, and the grinding teeth 11 and the tooth grooves 12 form a cutting angle alpha with the radial direction of the annular grinding zone section 4 from the grinding plate supply end 21 to the outlet end 22 against the rotating direction 23 of the movable grinding plate 1, the cutting angle alpha directly influences the difference of the production efficiency and the fiber treatment effect, and the angle alpha is 0-60 degrees. The grinding zone section 3 is distinguished from the grinding zone section 4 by a cut-off 32, the ends of the grinding teeth 11 and tooth grooves 12 being arranged with a irregularity to facilitate the entry of stock into the grinding zone section 4. The depth of the tooth grooves 12 of the grinding section of each movable grinding sheet 1 is greater than that of the tooth grooves 12' of the static grinding sheet 1' at the same position of the grinding section 3 at least near the raw material supply end 21 of the static grinding sheet 1', or equal at the outlet end 22, or greater than that of the tooth grooves 12' of the static grinding sheet 1' from the raw material supply end 21 to the outlet end 22 all the time, and greater than the depth of the tooth grooves 12' of the static grinding sheet 1' at the same position by more than 20%.

As shown in fig. 5, another refiner plate 1' working portion 2' comprises three refining zone segments 3',4' and 5'. The tooth profile is substantially similar to that of the working portion 2 of the movable refiner plate 1 in fig. 4, and a breaking portion 32' is provided between 3' and 4' and between 4' and 5', so that the refining teeth 11' are broken therefrom to form a refining zone segment 4' and a refining zone segment 5', and the widths of the refining teeth 11' and tooth grooves 12' on the refining zone segment 4' and the refining zone segment 5' may be the same or different depending on the matrix requirements of the fiber treatment, and the tooth profile of the working portion 2' of the stationary refiner plate 1' may be the same or different from that of the working portion 2 of the movable refiner plate 1, but the depth of the tooth grooves 12' of the refining zone segment of the stationary refiner plate 1' is shallower by 20% or more than the depth of the tooth grooves 12 of the working portion of the movable refiner plate 1 at least at the material supply end 21, and the throughput of the tooth grooves 12 of the movable refiner plate 1 is increased, so that the material passing through the stationary refiner plate 1' tends to be consistent with the throughput of the movable refiner plate 1.

As shown in figure 6, the working part 2 of the whole movable grinding plate 1 of the refiner plate consists of a plurality of sector structures, each sector structure can be divided into a plurality of annular grinding

zone sections

3,4,5 and 6 due to different numbers of grinding teeth 11, the widths of the grinding teeth 11 and tooth grooves 12 in each grinding zone section can be the same, but the depth of the tooth grooves 12 is different from that of the tooth grooves 12' of the static grinding plate 1' matched with the tooth grooves 12', and is at least at the raw material supply end 21 or at the depth or the depth of 20% or more.

As shown in fig. 7, a working section 2 of a unitary refiner plate 1 for a refiner plate comprises ring-shaped

refining segments

3,4 and 5. The refining teeth 11 and the tooth grooves 12 for defibering are arranged close to the raw material supply end 21, the outlet end 22 is an annular grinding zone section 4 and an annular grinding zone section 5 which are respectively formed by the refining teeth 11 and the tooth grooves 12 which are two coarse grinding teeth and the refining teeth 11 and the tooth grooves 12 which have an angle beta different from the cutting angle alpha in the annular radial direction, the direction of the angle beta is opposite to the direction of the angle alpha and is the same as the rotating direction 23 of the located grinding plate, the values of beta and alpha can be the same or smaller than the value of alpha, the grinding teeth 11 or the tooth grooves 12 are arranged opposite to the rotating direction 23 of the movable grinding plate 1 from the grinding plate supply end 21 to the outlet end 22 and form the cutting angle alpha with the radial directions of the annular grinding zone sections 3 and 4, so that the raw materials can be conveniently pumped into the working part 2, the annular grinding zone section 5 and the radial directions of the annular grinding zone sections 3 and 4 form the reverse keeping angle beta arrangement, and the time of the raw materials in the working part 2 is prolonged so that the raw materials can be fully processed as much as possible. The annular grinding zone segment 3 having the loosening teeth 11 and the loosening grooves 12 is distinguished from the annular grinding zone segment 4 by cut-off portions 32, and the depth of the grooves 12 is 20% or more or less than the depth of the grooves 12 'of the static grinding blade 1' at the same position of the annular grinding zone segment 3 at least in a portion near the raw material supply end 21.

As shown in fig. 8, the working portion 2' of an integral static refiner plate 1' of a refiner plate comprises ring-shaped refining zone segments 3',4' and 5', and towards the outlet end 22, two refining zone segments 4',5' of different angle β from the radial cutting angle α of the ring-shaped refining zone segment 3. The annular grinding zone segment 3 'with the defibering teeth 11' and the defibering tooth grooves 12 'and the annular grinding zone segment 4' are connected by a partition 31', part of the defibering teeth 11' are connected with the coarse grinding teeth 11 'and the fine grinding teeth 11', the tooth profile of the working part 2 'of the static grinding plate 1' can be different from that of the movable grinding plate 1, but the depth of the tooth grooves 12 'is smaller than or larger than 20% of the depth of the tooth grooves 12 of the movable grinding plate 1 at the same position of the annular grinding zone segment 3' at least near the raw material supply end 21 of the movable grinding plate 1, and the depth larger than the tooth grooves 12 of the movable grinding plate 1 can increase the throughput in the tooth grooves 12 'of the static grinding plate 1', improve the yield and reduce the abrasion of the movable grinding plate 1.

The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A refiner plate is characterized in that the plate comprises a static plate and a dynamic plate,

the direction of the grinding teeth and tooth grooves of each grinding zone section is the same as or different from the rotating direction of the grinding sheet;

the width and depth of the teeth and tooth grooves of the movable blade in each blade section are different from the width and depth of the teeth and tooth grooves of the static blade in each blade section.

2. A refiner plate according to claim 1, wherein a break or division is provided between each refining zone segment, and wherein parts of the teeth and tooth grooves of each refining zone segment continue to be connected or disconnected at the break or division.

3. A refiner plate according to claim 1, wherein the static and dynamic plates are divided into a fluffing section, a roughing section and a refining section from a raw material supply end to an outlet end of the refiner.

4. A refiner plate according to claim 3 wherein the number of grinding teeth and tooth spaces of the dynamic and static plates in the fluffing section and/or the rough grinding section is the same, and the depth of the tooth spaces of the dynamic plate is 20% or more greater than the depth of the tooth spaces of the static plate; in the refining section, the depth of the tooth grooves of the movable refining plate is the same as that of the tooth grooves of the static refining plate at the same position.

5. A refiner plate according to claim 3, wherein the number of teeth and tooth slots of the movable plate and the static plate in the fluffing section or/and the rough grinding section is the same, and the depth of the tooth slots of the static plate is 20% or more greater than the depth of the tooth slots of the movable plate; in the refining section, the depth of the tooth grooves of the static refining plate is the same as that of the tooth grooves of the movable refining plate at the same position.

6. A refiner plate according to claim 1, wherein the depth of the tooth grooves of the moving plate in each refining zone section is 20% and more greater than the depth of the tooth grooves of the stationary plate at the same position.

7. A refiner plate according to claim 1 wherein the static plate has gullets at each refining zone segment with a depth of 20% and more greater than the gullets of the dynamic plate at the same location.

8. A refiner plate according to claim 3, wherein the movable or stationary plate has a tooth width in the defibering section of 3-10 mm and a tooth width in the refining section of 0.8-5 mm.

9. A refiner plate according to claim 1, wherein the width of the tooth grooves of the moving or static plate in the defibering section is 6-25 mm, the width of the tooth grooves in the refining section is 1.5-8 mm, and the radial width of the refining section is 60-130 mm.

10. Refiner, characterized in that the refiner comprises at least one set of static and dynamic refiner plates according to any one of claims 1-9.