CN219690177U - Fan-shaped abrasive disc unit, split abrasive disc and integral abrasive disc - Google Patents

Abstract

The utility model discloses a fan-shaped abrasive disc unit, a split abrasive disc and an integral abrasive disc, and relates to the technical field of disc refiners. According to the utility model, pumping force is changed in different stages, so that the use safety of the grinding disc is effectively improved, and the pulping effect is improved.

Description

Fan-shaped abrasive disc unit, split abrasive disc and integral abrasive disc

Technical Field

The utility model relates to the technical field of disc refiners, in particular to a fan-shaped abrasive disc unit, a split abrasive disc and an integral abrasive disc.

Background

The disc refiner is one of the indispensable components of the disc refiner, and whether the design of the refiner element of the refiner has a reasonable direct influence on the refining quality or not.

Chinese patent publication No. CN 110952366A discloses a grinding unit of a grinding disc of a pulping machine, wherein the specification and fig. 1 disclose that the grinding unit is a fan-shaped sheet and is provided with an inlet end and an outlet end, grinding teeth are provided on a bottom plate of the grinding unit, tooth grooves are provided between adjacent grinding teeth, four grinding tooth areas are provided on the grinding unit, the grinding teeth are arc-shaped in depth direction, and edge lines of the grinding unit are arranged in a straight line.

In this prior art, though the pumping force is improved to a certain extent by setting the depth direction of the grinding teeth to be circular arc, there is a risk that the pumping force is too high so that slurry is pumped out, resulting in the use safety of the grinding plate and the general slurry grinding effect.

For this reason, a new technical solution is needed to solve the above technical problems.

Disclosure of Invention

The utility model aims to provide a fan-shaped abrasive disc unit, a split abrasive disc and an integral abrasive disc, so as to solve the technical problems that the pumping force is improved, the pumping force is too high to pump out pulp, the use safety and the pulp grinding effect of the abrasive disc are common, and the integrity of grinding teeth cannot be ensured when the abrasive disc unit is used as a component part of the split abrasive disc, the effective pulp grinding area is easily reduced, and the pulp grinding efficiency and the pulp grinding effect are further influenced.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

in a first aspect, the utility model provides a fan-shaped abrasive disc unit, the abrasive disc unit has an inner diameter end and an outer diameter end, a plurality of abrasive tooth areas are circumferentially arranged, the abrasive tooth areas are uniformly provided with a plurality of abrasive teeth, the edge lines of the abrasive disc unit and the abrasive teeth are of an S-shaped structure, the abrasive teeth are integrally arranged and have the same or similar width, S-shaped tooth grooves are formed between adjacent abrasive teeth in each abrasive tooth area, the widths of the tooth grooves are the same or similar, the tooth grooves and the abrasive teeth are arranged uninterruptedly, the included angle between the connecting line of two end points of each abrasive tooth and the connecting line of the end point of the abrasive tooth, which is close to the outer diameter end, to the center of a whole circle is greater than 0 degree, and the longitudinal section of each abrasive tooth is one of rectangle, triangle, parallelogram and trapezoid;

further, the grinding teeth are composed of a circular curve part I close to the inner diameter end, a circular curve part II close to the outer diameter end and a gyratory line part connected between the circular curve part I and the circular curve part II, and the circular curve part I and the circular curve part II are arranged in opposite directions.

In a second aspect, the present utility model provides a split blade formed by splicing a plurality of the fan-shaped blade units.

In a third aspect, the present utility model provides an integral abrasive sheet integrally defined by a plurality of the above-described fan-shaped abrasive sheet units.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the grinding disc unit is circumferentially provided with a plurality of grinding tooth areas, the grinding tooth areas are uniformly provided with a plurality of grinding teeth, and the grinding teeth are not combined, so that good circulation of slurry is ensured, and on the basis of improving pumping force, the pumping force is changed in different stages by arranging the grinding teeth into an S-shaped structure, namely, the pumping force is further improved when feeding, and then the pumping force is slowly changed into anti-pumping force before discharging, so that excessive pumping force is stably counteracted, the materials are prevented from being pumped out after being sufficiently ground, the grinding teeth are sufficiently ground, finally, the use safety of the grinding disc is effectively improved, the grinding effect is greatly improved, and on the basis, the edge lines of the grinding disc unit are of an S-shaped structure, and the included angles between the connecting lines of two end points of each grinding tooth and the connecting line of one end, close to the outer diameter end of the grinding tooth, to the center of a whole circle are respectively larger than 0 degree, so that the grinding teeth can be completely arranged on the grinding disc unit, the grinding disc unit is used as a part of a split grinding disc, the split grinding teeth can be formed, the grinding disc is further, the grinding teeth can be completely arranged, the grinding disc is effectively, the grinding disc is further, the grinding efficiency is improved, and the grinding effect is greatly is improved, and the grinding teeth are further is effectively arranged, and the grinding effect is improved;

2. the grinding teeth in the utility model are composed of the circular curve part I, the circular curve part II and the convolution line part connected between the circular curve part I and the circular curve part II, so that the smooth transition between the circular curve part I and the circular curve part II which are opposite to each other is realized, the problem that the direct bending makes the grinding teeth form an S-shaped structure so that the conversion of pumping force is too rapid is solved, the stability when the pumping is converted into reverse pumping is effectively ensured, and the use safety of the abrasive disc unit and even the whole abrasive disc is further ensured;

3. when the abrasive disc unit is used as a component part of the integral abrasive disc, the integral abrasive disc belongs to the abrasive disc with an integral structure, joint is not needed between the abrasive disc unit and the abrasive disc unit, the strength of the abrasive disc is further improved, the use safety of the abrasive disc is further improved, and meanwhile, the effective pulping area is further ensured, so that the pulping efficiency and the pulping effect are further ensured.

Drawings

FIG. 1 is a schematic view of a refiner plate element of the present utility model;

FIG. 2 is a schematic diagram of the working principle of the grinding tooth of the present utility model;

FIG. 3 is a schematic view of a split abrasive disc according to the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a schematic view of the structure of the integrated abrasive sheet of the present utility model;

FIG. 6 is a partial enlarged view at B in FIG. 5;

in the figure: 1. the gear grinding area 2, gear grinding 21, circular curve parts I and 22, circular curve parts II and 23, a convolution line part 3, an inner diameter end 4, an outer diameter end 5, an edge line 6, a two end point connecting line 7, a connecting line from an end point to the center of a circle of a whole circle body, 8, tooth grooves, 9 and a splicing seam.

Detailed Description

Example 1

The following examples are intended to further illustrate the utility model and are not intended to limit the application of the utility model.

Referring to fig. 1-2, a fan-shaped abrasive disc unit is shown, the abrasive disc unit is formed with an inner diameter end 3 and an outer diameter end 4 and is provided with a plurality of abrasive tooth areas 1 (here, three abrasive tooth areas 1 can be arranged), the abrasive tooth areas 1 are distributed along the circumferential direction, two edge lines of the abrasive tooth areas 1 are of the same S-shaped structure, abrasive teeth 2 of a plurality of S-shaped structures are uniformly distributed in each abrasive tooth area 1, the abrasive teeth 2 are uniformly and integrally arranged, the widths of the abrasive teeth 2 are the same or similar, tooth grooves 8 of the S-shaped structure are formed between two adjacent abrasive teeth 2 in the same abrasive tooth area 1, the widths of the tooth grooves 8 are the same or similar, and the tooth grooves 8 and the abrasive teeth 2 are all arranged uninterruptedly (when a conventional bolt hole is not considered);

further, the longitudinal section of each grinding tooth 2 may be rectangular, triangular, parallelogram or trapezoid, and the connecting line 6 of two end points of each grinding tooth 2 is not coincident with the connecting line 7 from the end point of the end, close to the outer diameter end 4, of the grinding tooth 2 to the center of the whole circle (here, the center of the whole circle is the center of the grinding disc which can be enclosed by the fan-shaped grinding disc unit);

further, the grinding teeth 2 are each composed of a circular curve portion i 21 and a circular curve portion ii 22 which are opposite to each other, and a convolution portion 23 connected between the circular curve portion i 21 and the circular curve portion ii 22 (the basic structures such as a normal circular curve and a convolution are not specifically described herein, but should not be limited to the function implementation thereof), the circular curve portion i 21 is disposed between one end of the convolution portion 23 and the inner diameter end 3, and the circular curve portion ii 22 is disposed between the other end of the convolution portion 23 and the outer diameter end 4.

The working principle of the utility model is as follows: the grinding teeth 2 of the grinding disc unit are formed by integrally arranging a circular curve part I21, a gyratory line part 23 and a circular curve part II 22 in sequence, and the formed S-like structure can enable the grinding disc unit to realize the change of pumping force at different stages, namely, the material flow is accelerated during feeding and then is smoothly slowed down before discharging, the retention of the material on the grinding disc is enhanced, the material is fully ground, and finally, the pulping effect is greatly improved while the use safety of the grinding disc is effectively improved; in addition, the edge line of the abrasive disc unit is in an S-shaped structure, so that the abrasive teeth 2 on the abrasive disc unit and even the split abrasive disc formed by splicing the abrasive disc unit are arranged completely, the effective pulping area is increased, and the pulping efficiency and the pulping effect are further improved. In addition, the abrasive disc unit can be made of metal or nonmetal materials, can be formed by casting at one time, and can be manufactured by various methods such as forging, welding, bonding, inlaying, machining, 3D printing, material reduction machining or material increase machining.

Example 2

Referring to fig. 1 to 4, as another object of the present utility model, there is provided a split type abrasive sheet, which is formed by splicing six of the above-mentioned fan-shaped abrasive sheet units (here, when the composition of the fan-shaped abrasive sheet units is changed, the number of the fan-shaped abrasive sheet units may also be changed, and the number of the fan-shaped abrasive sheet units required for the abrasive sheet is typically three to sixteen), and a splice joint 9 is formed between two adjacent fan-shaped abrasive sheet units. Accordingly, the split blade may achieve any of the advantages provided by the fan-shaped blade unit described above, and will not be described in detail herein.

Example 3

Referring to fig. 1-2 and 5-6, the present utility model also provides an integrated abrasive sheet comprising six of the above-described fan-shaped abrasive sheet elements integrally formed (here, the number of fan-shaped abrasive sheet elements may vary as the composition of the fan-shaped abrasive sheet elements varies, and the number of fan-shaped abrasive sheet elements required for the abrasive sheet is typically three to sixteen), wherein there is no splice 9 between two adjacent fan-shaped abrasive sheet elements. Thus, the integrated blade unit also achieves the advantageous effects of the fan-shaped blade unit described above, in that the refining effect and refining efficiency, and the safety in use are effectively improved, and will not be described in detail.

Claims (9)

1. The fan-shaped abrasive disc unit is provided with an inner diameter end and an outer diameter end, a plurality of abrasive tooth areas are circumferentially arranged on the abrasive disc unit, and the abrasive tooth areas are evenly provided with a plurality of abrasive teeth.

2. A fan-shaped abrasive sheet unit according to claim 1, wherein the abrasive teeth are each composed of a circular curve portion i, a circular curve portion ii, and a gyratory line portion connected between the circular curve portion i and the circular curve portion ii.

3. A fan-shaped abrasive sheet unit according to claim 2, wherein the circular curve portion i is provided near an inner diameter end, the circular curve portion ii is provided near an outer diameter end, and the circular curve portion i and the circular curve portion ii are provided in opposite directions to each other.

4. A fan-shaped abrasive sheet unit according to claim 1 wherein the widths of the teeth are all the same or similar.

5. A fan-shaped abrasive sheet unit according to claim 1 wherein S-like tooth slots are formed between adjacent teeth in each of said tooth regions, said tooth slots having the same or similar width.

6. A fan-shaped abrasive sheet unit according to claim 5 wherein the gullet and the abrasive teeth are each provided uninterruptedly.

7. A fan-shaped abrasive sheet unit according to claim 1, wherein the longitudinal sections of the abrasive teeth are each one of rectangular, triangular, parallelogram, trapezoid.

8. A split blade comprising a plurality of fan-shaped blade units according to any one of claims 1 to 7.

9. A unitary abrasive sheet, characterized in that it is integrally defined by a number of fan-shaped abrasive sheet units according to any one of claims 1-7.