CN217127867U - Concave-convex fluctuation structure of substrate surface, grinding disc or grinding disc and pulping machine - Google Patents

Abstract

The utility model relates to a grinding disc or mill and fiberizer of base member surface convex-concave undulation structure. The grinding plate or the grinding disc has a base body which is a connecting and reinforcing part between a back surface mounting part and a grinding tooth working part, and the surface convex-concave undulating structure of the base body comprises: the groove is formed between the convex ribs. The utility model discloses a concave-convex fluctuation structure of base member surface has increased the current route of raw and other materials in the fiberizer, has prolonged the detention time of raw and other materials in the fiberizer, has increased the flourishing degree of fluctuation that raw and other materials flow, is favorable to more abundant processing raw and other materials, has improved the quality and the effect that raw and other materials were handled, can also reduce the deflection that abrasive disc or mill produced in process of production and the default in the course of working, reduces the waste product, reduce cost.

Description

Concave-convex fluctuation structure of substrate surface, grinding disc or grinding disc and pulping machine

Technical Field

The utility model relates to a grind the thick liquid technical field, in particular to base member surface convex-concave undulation structure, abrasive disc or mill and fiberizer.

Background

In the prior art, pulping for paper making, density board production, processing of raw materials for pharmaceutical, starch and food processing cannot be separated from refiners, and the refiners mainly process raw materials containing fibers, cellulose and the like into expected single fiber shapes by using components such as grinding plates, grinding discs and the like which are arranged, and further prepare various products such as pulp, density board plates and the like. The grinding plates or grinding discs are composed of at least one pair of grinding plates or grinding discs which rotate relatively and do not rotate relatively, the rotating grinding plates or grinding discs are called as rotating grinding plates or grinding discs, the non-rotating grinding plates or grinding discs are called as fixed grinding plates or grinding discs, the rotating grinding plates or grinding discs are fixed on a rotating disc and driven to rotate by a power source, and gaps reserved between the rotating grinding plates or the fixed grinding plates or the grinding discs are used for processing raw materials. These abrasive discs or discs differ in their entirety and combination. The grinding plates or grinding discs mainly comprise grinding tooth working parts, base bodies and back surface mounting parts. The back mounting part is a structure of the grinding plate or the grinding disc which is arranged according to the requirements and the size of mounting and fastening with the refiner, and comprises bolt holes, support base planes and various reinforcing structures for increasing the strength of the support base planes. The grinding tooth working part consists of grinding teeth and tooth grooves formed between the grinding teeth, the tooth grooves are used as necessary channels for conveying raw materials, and the bottoms of the tooth grooves are established on the upper surface of the base body. The base is a connecting and reinforcing portion between the back mounting portion and the working portion of the grinding tooth, has different shapes, thicknesses and strengths, and is generally bonded to the back mounting portion and the working portion of the grinding tooth in one or more different planes.

The raw material is conveyed from the inlet end to the outlet end mainly through tooth grooves, and in the process, due to the transverse movement relative to the fixed grinding sheet or the grinding disc caused by the high-speed rotation of the movable grinding sheet or the grinding disc, some raw materials in the grooves are adsorbed into gaps between the movable grinding sheet and the fixed grinding sheet or the grinding disc to be decomposed, crushed, broomed and the like. The effect of the treatment depends, among other things, on the parameters and performance of the refiner, more importantly the shape and size of the refiner teeth of the refiner plate or refiner disc refining work, including the shape and size of the tooth spaces between the refiner teeth. Usually, the gullets are arranged in the upper plane of the base body, and the bottom of the gullets is in one or several different planes. The skilled designer has always focused on developing and designing gear grinding working parts of various shapes and sizes, and neglecting the potential role of the base body. In addition, due to the structure and stress of the grinding sheet or grinding disc, a large amount of deformation or fracture of the grinding sheet or grinding disc often occurs in the manufacturing and processing processes, thereby increasing the difficulty and cost of production and manufacturing.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a grinding disc or a grinding disc and a pulping machine with a concave-convex fluctuation structure on the surface of a base body, which are used for solving the problems existing in the prior art.

The above technical purpose of the present invention is to be achieved by the following technical solution:

a substrate surface relief for a refiner plate or disc of a refiner, said substrate surface relief comprising: the groove is formed between the convex ribs, the height of the convex-concave fluctuating structure is 0-20 mm, and the width of each pair of convex rib and groove is 5-100 mm.

The above aspects and any possible implementation further provide an implementation, in which the rib is prismatic or curved, and the cross section of the rib and the groove is one or a combination of trapezoidal, curved, saw-toothed, "W" or "U".

The above aspects and any possible implementations further provide an implementation in which the substrate surface ridges and grooves extend continuously or are interrupted at intervals of a certain length from an inner diameter to an outer edge of the grinding plate or disc.

The above aspects and any possible implementations further provide an implementation where the substrate surface ridges and grooves are linear or curvilinear on the refiner or refiner plate, or are arranged in a radial pattern, or in a grid pattern that intersects at different angles.

The aspect and any possible implementation described above further provide an implementation in which the base body surface relief extends at an oblique angle to a radial direction of the grinding plate or disc; either perpendicular to the grinding teeth of the plate or disc or in the opposite direction to the radial direction of the plate or disc with respect to the longitudinal direction of the grinding teeth, or at an angle.

The utility model also provides a grinding disc or a grinding disc of the pulping machine, the grinding disc or the grinding disc comprises a grinding tooth working part, a basal body and a back surface installation part, and the grinding tooth working part comprises grinding teeth and tooth grooves between the grinding teeth; the grinding tooth working part is arranged on the upper surface of the base body, the base body is arranged on the back mounting part, the surface of the base body contacting with the back mounting part is the lower surface, and the upper surface and/or the lower surface of the base body are/is provided with a base body surface convex-concave fluctuating structure.

The above aspects and any possible implementations further provide an implementation in which the substrate upper and/or lower surfaces include a number of different planes, and the shapes, sizes, and numbers of the substrate surface relief structures on the different planes are the same or different.

The above aspects and any possible implementations further provide an implementation where the relief of the substrate surface is at a maximum level on the refiner or refiner disc that is lower than the level of the teeth.

The utility model also provides a fiberizer, the fiberizer includes the utility model discloses in abrasive disc or mill.

The utility model has the advantages of:

the utility model provides an embodiment's concave-convex undulation structure of base member surface for the abrasive disc or the mill of fiberizer. The substrate surface convex-concave relief structure comprises: the groove is formed between the convex ribs. The utility model discloses a concave-convex fluctuation structure of base member surface has increased the current route of raw and other materials in the fiberizer, has prolonged the detention time of raw and other materials in the fiberizer, has increased the flourishing degree of fluctuation that raw and other materials flow, is favorable to more abundant processing raw and other materials, has improved the quality and the effect that raw and other materials were handled, can also reduce the deflection that abrasive disc or mill produced in process of production and the default in the course of working, reduces the waste product, reduce cost.

Drawings

Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:

FIG. 1 is a schematic diagram of the composition of a refiner plate or disc;

fig. 2 is a schematic view of a substrate with a concave-convex structure on the surface of the substrate according to a first embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a base surface ridge in a second embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a rib on the surface of a base body according to a third embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a rib on the surface of a base body according to a fourth embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a base surface ridge in a fifth embodiment of the present invention;

FIG. 7 is a schematic view of the substrate surface relief structure in a radial arrangement according to an embodiment of the present invention;

FIG. 8 is a schematic view of the convex-concave relief structure of the base body with the surface ribs in a curved shape according to the embodiment of the present invention;

FIG. 9 is a schematic view showing the convex-concave structure of the protrusions on the surface of the base body in the corrugated or Z-shaped configuration according to the embodiment of the present invention;

fig. 10 is a schematic view of the concave-convex structure of the substrate surface in a crossed or gridded arrangement according to an embodiment of the present invention.

Detailed Description

To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific examples, but the embodiments of the present invention are not limited thereto.

As shown in fig. 1, a flat disc-shaped refiner 10 combines one of a refiner plate or disc 20, and the refiner plate or disc 20 includes a tooth working portion 30, a base 50, a back surface mounting portion 40, and the like. The back-side mounting 40 is a structure for mounting and sizing the refiner plate or disc 20 according to the requirements and dimensions of the refiner 10, including bolt holes 42, support bases 43, and various reinforcement formations 44 for increasing the strength of these support bases 43. The grinding work portion 30 includes grinding teeth 31 and tooth grooves 32 formed therebetween, the tooth grooves 32 serve as a passage through which the stock material is fed, and the bottom portions 33 of the tooth grooves 32 are provided on the upper surface 51 of the base 50. The base 50 serves as a connecting and reinforcing portion between the back mounting portion 40 and the grinding tooth working portion 30, and the base 50 is provided with different flat surfaces 57, 58 …. The grinding plate or disc 20 further comprises an inlet 25 and an outlet 27, an inner diameter 24 and an outer edge 26, and the grinding teeth 31 extend from the inner diameter 24 to the outer edge 26 of the grinding plate or disc 20, i.e. from the inlet 25 to the outlet 27.

Fig. 2 shows a first embodiment of the present invention, in which the convex-concave relief 52 on the surface of the base 50 is disposed on the upper surface 51 of the base 50, the convex-concave relief 52 on the surface of the base 50 includes a ridge 55 and a groove 56, and a certain inclination angle α is formed between the direction of the convex-concave relief 52 on the surface of the base 50 and the radial direction of the grinding plate or the grinding disc 20, or the direction from the inner diameter 24 to the outer edge 26, or the direction from the inlet 25 to the outlet 27, or the angle γ' is opposite to the radial direction of the grinding plate or the grinding disc 20 or forms a certain angle with respect to the longitudinal direction of the grinding teeth 31 in the grinding teeth working portion 30. When the tooth grinding work portion 30 is engaged with the upper surfaces 51 of the bases 50, the surface irregularities 52 of the bases 50 appear at the bottoms 33 of the tooth grooves 32, and the surface irregularities 52 of the bases 50 may be distributed over the entire upper surfaces 51 of the bases 50 or portions of the upper surfaces 51 thereof. When the movable grinding plate or the fixed grinding plate or the grinding disc 20 rotates relatively, the relative distance between the concave-convex structures 52 on the surface of the base body 50 arranged on the upper surface 51 of the base body 50 is continuously changed, and is sometimes expanded or reduced, so that the raw material which can originally run towards the outlet 27 along the tooth grooves 32 continuously jumps or is adsorbed along with the change of the height of the bottom 33 of the tooth grooves 32, the probability of the raw material entering the gap between the grinding plates or the grinding disc 20 is increased by the arrangement of the concave-convex structures 52 on the surface of the base body 50, the flow of the raw material in the grinding plates or the grinding disc 20 is more active, meanwhile, the probability of mutual impact among raw material particles is increased, and the treatment achieves better effect. The convex-concave undulating structure 52 on the surface of the base body 50 of the grinding plate or grinding disc 20 does not change the original tooth shape and length, and only the convex-concave undulating flow field is formed on the base body 50 of the grinding plate or grinding disc 20 and combined with the bottom 33 of the tooth grooves 32, so that the flow path of the raw material in the grinding plate or grinding disc 20 is increased, the residence time of the raw material in the grinding plate or grinding disc 20 is prolonged, and the grinding by a refiner is more fully facilitated. The curved surface 62 of the base 50, the ridges 55 and the grooves 56 reduce the resistance of the raw material during the flowing process, and the jumping generated during the flowing process of the raw material is more gradual and labor-saving. The maximum height of the surface relief 52 of the basic body 50 in the grinding plate or grinding disc 20 is always lower than the height of the grinding teeth 31 of the grinding tooth working portion 30. The provision of the relief 52 on the substrate 50 significantly improves the quality and effectiveness of the raw material treatment relative to a disc refiner 10 of the same gauge without any treatment of the substrate 50. According to different manufacturing effects of the tooth shapes of different grinding tooth working parts 30, the concave-convex surface undulating structure 52 is arranged on the surface of the base body 50, so that the deformation of the blank body of the grinding plate or the grinding disc 20 caused by the tooth shape structure and stress in the production process and the defects in the processing process can be reduced, waste products are reduced, and the cost is reduced.

As shown in fig. 3, 4, 5, and 6, several embodiments of the improved substrate 50 of the refiner or refiner disc 20 are shown in cross-section. The surface relief structure 52 comprises a rib 55 and a groove 56, wherein the cross section of the rib 55 and the groove 56 is configured as one or a combination of a trapezoid 61, a curve 62, a sawtooth 63, a "W" shape 64 or a "U" shape 65. When the cross-section of the rib 55 is trapezoidal 61, it is generally shaped as a frustum or cone because of the small resistance and the upward lift generated during the mold stripping and the flow of the raw material. The cross section of the convex ridge 55 and the groove 56 can also be made into one or a combination of more of sawtooth shapes 63, W-shaped shapes 64 or U-shaped shapes 65 and other convex-concave undulating shapes. The saw-tooth shape 63, the "W" shape 64 or the "U" shape 65 have the effect of gradually reducing and abruptly increasing the cross-sectional shape of the groove 32, and the raw material is rapidly sucked after being gradually pressed by the pressure, so that it becomes more active during the process.

Preferably, in the embodiment of the present invention, the ridges 55 and the grooves 56 of the surface relief 52 of the base 50 extend continuously or are separated from each other from the inner diameter 24 to the outer edge 26 of the grinding plate or disc 20 at a certain distance, the ridges 55 and the grooves 56 may be parallel straight lines or curved curves or combined curves, and the shape, height and distance of the surface relief 52 of the adjacent base 50 may be the same or different.

Preferably, the height of the concave-convex structure 52 on the surface of the base 50 in the embodiment of the present invention is between 0mm and 20mm, preferably between 1 mm and 5mm, and the height of the highest part of the rib 55 is always lower than the height of the grinding tooth 31, preferably one third of the height of the grinding tooth 31 and less. The width of each pair of the convex ribs 55 and the grooves 56 is between 5 and 100mm, preferably between 10 and 50mm, and the width of the convex ribs 55 and the grooves 56, the height of the convex ribs 55 and the depth of the grooves 56 are equal or different on all or part of the upper surface 51 of the base body 50 of the grinding sheet.

As shown in fig. 7, the surface asperities 52 of the substrate 50 are radially arranged on the upper surface 51 of the substrate 50. In the normal refiner plate or disc 20 design, dams 34 are positioned in the grinding teeth 31 and tooth slots 32 to slow the flow of stock material to the outlet 27 end, the height of the dams 34 being the same as the height of the grinding teeth 31 or less than the height of the grinding teeth 31, such as half the height of the grinding teeth 31. In the embodiment of the present invention, the radial grinding teeth 31 are engaged with the upper surface 51 of the base 50 to form the convex-concave relief structure 52 arranged radially, which does not interfere with the design of the original dam 34, but through the beneficial technical effects of the present invention, the dam 34 can be replaced or reduced. The height of ribs 55 in relief 52 on the surface of base 50 near inner diameter 24 may be relatively low compared to the height of ribs 55 at outer edge 26, thereby overcoming the undesirable effect of the relatively denser relief 52 on the surface of radial base 50 near inner diameter 24 at second plane 58 of base 50 than at outer edge 26, or pursuing a large, full throughput at inlet 25. In this embodiment, the number of teeth 31 on the upper surface 51 of the first planar surface 57 of the body 50 adjacent the inlet 25 is reduced, and the number of correspondingly arranged ribs 55 and grooves 56 may be reduced. The direction of the convex-concave undulating structure 52 on the upper surface 51 of the base body 50 has an inclination angle alpha of 0-90 degrees with the radial direction of the grinding plate or the grinding disc 20 or the extending direction of the inner diameter 24 to the outer edge 26 or the direction of the inlet 25 to the outlet 27, or is vertical to the grinding teeth 31 of the grinding tooth working part 30, or is inclined by a certain angle beta, or forms an opposite direction angle gamma with respect to the angle gamma' formed by the longitudinal direction of the grinding teeth 31 and the radial direction of the grinding plate or the grinding disc 20, or forms a certain angle of 0-90 degrees, and preferably 5-70 degrees. Due to the tooth geometry and stress of the grinding teeth 31, such as coarse grinding teeth 31 plus wider spacing or higher tooth height, differences in texture transformation of the grinding plate or disc 20 after heat treatment and subsequent uneven heating during cold working and use, the grinding plate or disc 20 may warp and crack. Such deformation becomes noticeable when the direction of extension of the grinding teeth 31 is at a large angle to the radial direction of the grinding plate or disc 20. The provision of the relief 52 on the surface of the base 50 at an angle γ opposite to the angle γ' formed by the longitudinal direction of the grinding teeth 30 and the radial direction of the grinding plate or disc 20 offsets and reduces the partial structural stress due to the inclined grinding teeth 31 and reduces the degree of deformation of the blank body after heat treatment and subsequent correction and cold working chipping caused thereby. The configuration of the asperities 52 on the surface of the substrate 50 can be configured in a variety of shapes and sizes depending on the particular tooth type characteristics of the abrasive sheet or disc 20.

As shown in fig. 8, the ridges 55 and the grooves 56 in the relief structure 52 of the base 50 have a curved shape. Initially, the ridges 55 and grooves 56 are formed at a small angle α' from the inlet 25 relative to the radial direction of the refiner plate or disc 20, which makes the raw material easier to enter, and as the ridges 55 and grooves 56 continue to extend toward the outer edge 26, the angle increases gradually to α, thereby retaining the raw material and slowing the outward flow, and the raised and recessed configuration 52 on the upper surface 51 of the substrate 50 is beneficial to improving the quality of the raw material treatment.

As shown in FIG. 9, the ridges 55 and grooves 56 of the convex-concave relief structure 52 on the surface of the substrate 50 are arranged in a corrugated or zigzag manner, so that the movable and fixed grinding plates or discs 20 with different rotation directions are suitable and have strong adaptability; as shown in fig. 10, the convex-concave relief structure 52 on the surface of the base body 50 is arranged in a cross-like or grid-like arrangement, and the arrangement of the cross-like or grid-like arrangement is suitable for the grinding plate or grinding disc 20 with the longitudinal direction of the grinding teeth 31 having a small inclination angle γ' with the radial direction of the grinding plate or grinding disc 20, and can also be used for different rotation directions, and has strong adaptability. Because the ridges 55 and grooves 56 are arranged in a wave shape or zigzag shape, in a cross-like or grid-like arrangement, and the convex-concave undulating structures 52 on the upper surface 51 of the base body 50 between each pair of grinding plates or grinding discs 20 are not on the same rotation radius, the distance between the ridges 55 and grooves 56 of the opposite grinding plates or grinding discs 20 is increased and decreased along with the rotation of the movable grinding plates or grinding discs 20, and the pulse-like extrusion and absorption of the raw material are continuously generated like a breathing pump, so that the raw material is continuously moved in and out between the tooth surfaces of the grinding teeth 31 and the tooth grooves 32. Due to the relief 52 of the upper surface 51 of the substrate 50 in the gullets 32, the flow of the raw material in the gullets 32 and thus throughout the refiner or refiner disc 20 becomes significantly active, and the chances of fibers and fiber particles in the raw material colliding with each other are significantly increased, which promotes the separation and disintegration, and even fibrillation, of the fibers and fiber bundles.

Preferably, in the embodiment of the present invention, in order to reduce or reduce the deformation of the grinding plate or grinding disc 20 during the manufacturing process and the defect during the manufacturing process, and reduce the rejection rate, the concave-convex undulation structure 52 on the surface of the base 50 is disposed on the lower surface of the base 50 combined with the back surface mounting portion 40, that is, the concave-convex undulation structure 52 on the surface of the base 50 can be disposed on the upper and lower surfaces of the base 50 at the same time, or alternatively.

These surface relief structures 52 of the substrate 50 can be applied to the refiner plates or plates 20 of a flat disc refiner, a conical refiner or a cylindrical refiner 10.

While the foregoing description shows and describes several preferred embodiments of the invention, it is to be understood, as noted above, that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the invention as expressed in the above teachings or as determined by the prior art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims (9)

1. A substrate surface relief structure for a refiner plate or disc of a refiner, wherein the substrate surface relief structure comprises: the groove is formed between the convex ribs, the height of the convex-concave fluctuating structure is 0-20 mm, and the width of each pair of convex rib and groove is 5-100 mm.

2. The substrate surface relief structure according to claim 1, wherein the ribs are prismatic or curved, and the cross-section of the ribs and grooves is one or a combination of trapezoidal, curved, saw-toothed, "W" or "U".

3. The substrate surface asperity relief structure as recited in claim 1, wherein said substrate surface ridges and grooves extend continuously or are interrupted at intervals from the inner diameter to the outer edge of said plate or disc.

4. The substrate surface asperity relief structure as recited in claim 1, wherein said substrate surface ridges and grooves are linear or curvilinear, or arranged in a radial pattern, or in a grid pattern intersecting at different angles on said plate or disc.

5. The substrate surface relief structure according to claim 1, wherein the substrate surface relief structure extends at an angle to the radial direction of the grinding plate or disc, or perpendicular to the grinding teeth of the grinding plate or disc, or in an opposite direction to the radial direction of the grinding plate or disc with respect to the longitudinal direction of the grinding teeth, or at an angle.

6. A grinding plate or a grinding disc of a pulping machine is characterized by comprising a grinding tooth working part, a basal body and a back surface mounting part, wherein the grinding tooth working part comprises grinding teeth and tooth grooves between the grinding teeth; the grinding tooth working part is arranged on the upper surface of the base body, the base body is arranged on the back mounting part, the surface of the base body, which is in contact with the back mounting part, is the lower surface, and the upper surface and/or the lower surface of the base body are/is provided with the concave-convex fluctuation structure on the surface of the base body according to any one of claims 1 to 5.

7. Abrasive sheet or disc according to claim 6, wherein the upper and/or lower substrate surface comprises several different planes, the shape, size and number of the substrate surface relief structures on different of said planes being the same or different.

8. A refiner plate or refiner disc according to claim 6, wherein the relief of the base surface is at a maximum level lower than the height of the teeth on the refiner plate or refiner disc.

9. Refiner, characterized in that the refiner comprises a refiner plate or a refiner disc according to any one of claims 6-8.

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