Papermaking pulping plane millstone
By setting grinding discs, flow guides, and guide plates on the paper pulping disc, the problems of disc blockage and installation accuracy were solved, achieving uniform distribution and efficient grinding of the pulp, and improving fluidity and grinding effect.
Patent Information
- Application Number
- CN202423179224.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Existing planar grinding discs are prone to clogging during the papermaking process due to localized thickening effects, and the installation accuracy is difficult to guarantee, affecting the fluidity of the pulp and the grinding effect.
A papermaking pulping flat grinding disc was designed, which adopts a disc-shaped mounting base and is equipped with grinding discs, guide discs, guide discs and fixed inner discs. The tightness of the components is ensured by inner and outer pressure rings and pressure ear structure, and the uniform distribution and grinding of pulp are achieved by the design of guide teeth, flow dividing teeth and grinding teeth.
It improves the fluidity of the slurry, prevents clogging, ensures the flatness of the grinding disc and the grinding effect, and enhances the installation accuracy and flow rate of the grinding disc.
Smart Images
Figure CN223510209U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of papermaking equipment technology, specifically to a papermaking pulping flat grinding disc. Background Technology
[0002] Pulp is extracted from plant fibers such as wood, grass, and waste paper. It is an important raw material used to manufacture various paper products such as paper, paperboard, and toilet paper. Plant fibers are usually broken down and dispersed into pulp through mechanical, chemical, and semi-chemical methods.
[0003] A pulping machine is a device used to grind solid materials in a liquid into a pulp. It is a mechanical pulping device that uses mechanical force to grind and stir the materials to make them into a fine slurry; therefore, its core component is the grinding disc.
[0004] Currently, conventional pulp mill grinding discs are either flat or conical. Structurally, flat grinding discs offer higher grinding efficiency but have lower flow rates and are more prone to clogging due to localized thickening effects; conical grinding discs, on the other hand, have higher flow rates and are less prone to clogging.
[0005] In addition, it is difficult to guarantee the installation accuracy of the planar grinding disc, which reduces the flow channel between the grinding teeth and causes local blockage due to the concentration effect. Utility Model Content
[0006] To address the technical problems existing in the background art, this utility model provides a papermaking pulping flat grinding disc, which ensures the flatness of the grinding disc, improves the fluidity of the pulp, and prevents blockage.
[0007] The technical solution adopted by this utility model is:
[0008] A papermaking pulping disc includes: a disc-shaped mounting base for fixing; grinding discs, guide discs, a guide disk, and a fixed inner disk are sequentially fixed along the radial direction from the outside to the inside of the mounting base, all sharing a central axis. Multiple sets of grinding discs are arranged in a circular array along the central axis of the mounting base, forming a disc shape for pulp grinding. Multiple sets of guide discs are arranged in a circular array along the central axis of the mounting base, forming a disc shape and pressing against the inner side of the multiple sets of grinding discs to guide pulp flow. The guide disk presses against the inner side of the multiple sets of guide discs to guide the flow direction of the pulp. The fixed inner disk presses against the inner side of the guide disk for fixation.
[0009] Furthermore, the grinding discs are configured in a fan shape, and multiple sets of grinding discs are arranged in a circular array along the central axis of the mounting base to form a disc shape;
[0010] The lower part of the inner arc surface of the grinding disc is provided with an external pressure lug extending radially, and the grinding disc surface is provided with guide teeth, diverting teeth and grinding teeth from the inside to the outside.
[0011] Furthermore, multiple guide teeth, diverting teeth, and grinding teeth are provided, with the tooth spacing of the guide teeth > the tooth spacing of the diverting teeth > the tooth spacing of the grinding teeth.
[0012] Furthermore, the guide teeth, diverting teeth, and grinding teeth are symmetrically arranged along the radial axis of the grinding disc;
[0013] The symmetrical grinding teeth on the outer side of the grinding disc are in the shape of "Λ" with the opening facing outwards, and a fourth fixed countersunk hole group is provided at the "Λ" shaped opening of the grinding teeth, penetrating the grinding disc.
[0014] Furthermore, the guide vanes are configured in a fan shape, and multiple sets of guide vanes are arranged in a circular array along the central axis of the mounting base to form a disc shape;
[0015] An inner pressure-bearing ear is provided on the lower part of the inner arc surface of the guide vane, and an outer pressure-bearing ear is provided on the upper part of the outer arc surface of the guide vane, with the outer pressure-bearing ear cap provided on the outer pressure-bearing ear. A main flow divider ear and a secondary flow divider ear are provided on the plate surface of the guide vane, and a third fixed countersunk hole group is provided through the guide vane.
[0016] Furthermore, the main shunt ear and the secondary shunt ear are arranged in multiple sets in a circular array along the central axis of the guide vane, and are spaced apart.
[0017] Furthermore, a through-hole is provided in the center of the guide plate, the through-hole being used to accommodate and fix the inner plate.
[0018] An inner pressure ring is provided on the lower part of the inner sidewall of the guide disk in a radial direction, and an outer pressure ring is provided on the upper part of the outer sidewall of the guide disk in a radial direction. The outer pressure ring is covered on the inner pressure ear. A guide ear is provided on the plate surface of the guide disk in a radial direction, and a second fixed countersunk hole group is provided through the guide disk.
[0019] Furthermore, multiple sets of the guide ears are arranged in a circular array along the central axis of the guide disk, and the guide disk between adjacent guide ears is set as a curved surface with an inner height and an outer ground.
[0020] The second fixed countersunk hole group is disposed on the guide plate between adjacent guide ears and is distributed in a circular array along the central axis of the guide plate.
[0021] Furthermore, a shaft hole is provided through the center of the fixed inner disk, a first set of fixed countersunk holes is provided through the fixed inner disk, and an inner pressure ring is provided radially extending from the upper part of the outer side wall of the fixed inner disk, with the inner pressure ring cover being provided on the inner pressure ring.
[0022] Furthermore, the first fixed countersunk hole group is arranged in a circular array along the central axis of the fixed inner disk.
[0023] The beneficial effects of this utility model of a papermaking pulping flat grinding disc are as follows:
[0024] 1. By pressing the inner pressure ring against the inner pressure ring, the outer pressure ring against the inner pressure ear, and the outer pressure ear against the outer pressure ear, the tightness and flatness of each component are ensured on the mounting base.
[0025] 2. The curved surface of the guide plate, with its inner height and outer ground, ensures that the slurry flows smoothly to all sides; the guide ears, main branch ears, secondary branch ears, guide teeth, and branch teeth evenly distribute and guide the slurry; and the grinding teeth grind the evenly distributed slurry. Attached Figure Description
[0026] Figure 1 This utility model provides a general three-dimensional schematic diagram of a papermaking pulping flat grinding disc;
[0027] Figure 2 This utility model provides a three-dimensional schematic diagram of the fixed inner disc of a papermaking pulping flat grinding disc;
[0028] Figure 3 This utility model provides a three-dimensional schematic diagram of a guide plate for a papermaking pulping flat grinding disc;
[0029] Figure 4 This utility model provides a three-dimensional schematic diagram of a guide plate for a papermaking pulping flat grinding disc;
[0030] Figure 5 This utility model provides a three-dimensional schematic diagram of the grinding disc of a papermaking pulping flat grinding disc.
[0031] In the picture:
[0032] 1. Fixed inner plate,
[0033] 11. Shaft hole; 12. First fixed countersunk hole assembly; 13. Inner pressure ring.
[0034] 2. Guide plate,
[0035] 21. Receiving hole; 22. Inner pressure ring; 23. Outer pressure ring; 24. Guide ear; 25. Second fixed countersunk hole assembly.
[0036] 3. Flow deflector,
[0037] 31. Internal pressure lug; 32. External pressure lug; 33. Main diversion lug; 34. Secondary diversion lug; 35. Third fixed countersunk hole assembly.
[0038] 4. Grinding disc,
[0039] 41. External pressure lug; 42. Guide tooth; 43. Diverting tooth; 44. Fourth fixed countersunk hole group; 45. Grinding tooth. Detailed Implementation
[0040] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.
[0041] This utility model relates to a flat grinding disc for papermaking and pulping, such as... Figure 1 As shown, it includes: a disc-shaped mounting base for fixing, on which a grinding disc 4, a guide disc 3, a guide disk 2, and a fixed inner disk 1 are fixedly arranged in sequence from the outside to the inside along the radial direction.
[0042] like Figure 5 As shown, the grinding disc 4 is fan-shaped, and twenty groups of grinding discs 4 are arranged in a circular array along the central axis of the mounting base to form a disc shape for pulp grinding. The lower part of the inner arc surface of the grinding disc 4 is provided with an outer pressure lug 41 extending radially. The plate surface of the grinding disc 4 is provided with guide teeth 42, diverting teeth 43, and grinding teeth 45 from the inside to the outside. There are multiple guide teeth 42, diverting teeth 43, and grinding teeth 45. The tooth spacing of the guide teeth 42 is greater than the tooth spacing of the diverting teeth 43, which is greater than the tooth spacing of the grinding teeth 45. The guide teeth 42, diverting teeth 43, and grinding teeth 45 are symmetrically arranged along the radial axis of the grinding disc 4. The symmetrical grinding teeth 45 on the outer plate surface of the grinding disc 4 are in the shape of "Λ" with the opening facing outward. A fourth fixed countersunk hole group 44 is provided at the "Λ"-shaped opening of the grinding teeth 45, penetrating the grinding disc 4.
[0043] like Figure 4 As shown, the guide vane 3 is fan-shaped, and ten groups of guide vanes 3 are arranged in a circular array along the central axis of the mounting base, forming a disc-shaped cover on the inner side of multiple grinding discs 4 to guide the pulp diversion; the lower part of the inner arc surface of the guide vane 3 is provided with an inner pressure ear 31 extending radially, and the upper part of the outer arc surface of the guide vane 3 is provided with an outer pressure ear 32 extending radially, the outer pressure ear 32 covering the outer pressure ear 41; the plate surface of the guide vane 3 is provided with a main diversion ear 33 and a secondary diversion ear 34 extending radially.
[0044] The main diverter ear 33 is provided in ten sets, and the secondary diverter ear 34 is provided in twenty sets. Each pair of secondary diverter ear 34 is respectively provided between two adjacent pairs of main diverter ear 33. The main diverter ear 33 and the secondary diverter ear 34 are arranged in a circular array along the central axis of the guide plate 3. A third fixed countersunk hole group 35 is provided through the guide plate 3.
[0045] like Figure 3As shown, the guide disk 2 presses against the inner side of multiple sets of guide plates 3 to guide the flow of pulp. A receiving hole 21 is provided through the center of the guide disk 2 to accommodate and fix the inner disk 1. An inner pressure ring 22 is provided radially at the lower part of the inner sidewall of the guide disk 2, and an outer pressure ring 23 is provided radially at the upper part of the outer sidewall of the guide disk 2. The outer pressure ring 23 is pressed against the inner pressure ear 31. A guide ear 24 is provided radially on the plate surface of the guide disk 2. Ten sets of guide ears 24 are arranged in a circular array along the central axis of the guide disk 2. The guide disk 2 between adjacent guide ears 24 is set as a curved surface with an inner higher surface and an outer lower surface. A second set of fixed countersunk holes 25 is provided through the guide disk 2. The second set of fixed countersunk holes 25 is provided on the guide disk 2 between adjacent guide ears 24 and is arranged in a circular array along the central axis of the guide disk 2.
[0046] like Figure 2 As shown, the fixed inner disk 1 is pressed against the inner side of the guide disk 2 for fixation; a shaft hole 11 is provided through the center of the fixed inner disk 1, and a first fixed countersunk hole group 12 is provided through the fixed inner disk 1. The first fixed countersunk hole group 12 is arranged in a circular array along the central axis of the fixed inner disk 1; an inner pressure ring 13 is provided radially extending from the upper part of the outer side wall of the fixed inner disk 1, and the inner pressure ring 13 is pressed against the inner pressure ring 22.
[0047] To improve the fluidity of the slurry, such as Figure 1 As shown, twenty sets of grinding discs 4 and ten sets of flow guides 3 are arranged alternately; the flow guide ears 24 are arranged between two adjacent sets of main flow guide ears 33; the radial symmetry axis of the grinding discs 4 is arranged between two adjacent sets of secondary flow guide ears 34.
[0048] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A papermaking pulping disc, comprising: A disc-shaped mounting base for fixing, characterized in that: The mounting base is fixedly arranged radially from the outside to the inside with a grinding disc (4), a guide disc (3), a guide disk (2), and a fixed inner disk (1) with a common central axis. The grinding discs (4) are arranged in a circular array along the central axis of the mounting base, forming a disc shape, for grinding pulp. The guide plates (3) are arranged in a circular array along the central axis of the mounting base, and form a disc-shaped cover on the inner side of the multiple grinding plates (4) to guide the pulp diversion. The guide disc (2) is pressed against the inner side of multiple sets of guide vanes (3) to guide the flow of pulp; The fixed inner plate (1) is pressed against the inside of the guide plate (2) for fixing.
2. The papermaking pulping flat grinding disc according to claim 1, characterized in that: The grinding disc (4) is configured in a fan shape, and multiple sets of grinding discs (4) are arranged in a circular array along the central axis of the mounting base to form a disc shape; The lower part of the inner arc surface of the grinding disc (4) is provided with an external pressure lug (41) extending radially, and the plate surface of the grinding disc (4) is provided with guide teeth (42), diverting teeth (43) and grinding teeth (45) from the inside to the outside.
3. The papermaking pulping flat grinding disc according to claim 2, characterized in that: The guide teeth (42), the diverting teeth (43), and the grinding teeth (45) are provided in multiples, with the tooth spacing of the guide teeth (42) being greater than that of the diverting teeth (43) and the tooth spacing of the grinding teeth (45).
4. A papermaking pulping disc according to claim 2 or 3, characterized in that: The guide teeth (42), the diverting teeth (43), and the grinding teeth (45) are symmetrically arranged along the radial axis of the grinding plate (4); The symmetrical grinding teeth (45) on the outer side plate of the grinding disc (4) are in the shape of "Λ" with the opening facing outward, and a fourth fixed countersunk hole group (44) is provided at the "Λ" shaped opening of the grinding teeth (45) to penetrate the grinding disc (4).
5. A papermaking pulping flat grinding disc according to claim 2, characterized in that: The guide vane (3) is configured as a fan shape, and multiple sets of guide vanes (3) are arranged in a circular array along the central axis of the mounting base to form a disc shape; An inner pressure ear (31) is provided on the lower part of the inner arc surface of the guide vane (3) extending radially, and an outer pressure ear (32) is provided on the upper part of the outer arc surface of the guide vane (3) extending radially. The outer pressure ear (32) is covered on the outer pressure ear (41). A main flow divider ear (33) and a secondary flow divider ear (34) are provided on the plate surface of the guide vane (3) extending radially. A third fixed countersunk hole group (35) is provided through the guide vane (3).
6. A papermaking pulping flat grinding disc according to claim 5, characterized in that: The main shunt (33) and the secondary shunt (34) are arranged in multiple sets in a circular array along the central axis of the guide plate (3), and are spaced apart.
7. A papermaking pulping disc according to claim 5, characterized in that: The guide plate (2) has a through hole (21) in the center, which is used to accommodate and fix the inner plate (1). An inner pressure ring (22) is provided on the lower part of the inner sidewall of the guide disk (2) extending radially, and an outer pressure ring (23) is provided on the upper part of the outer sidewall of the guide disk (2) extending radially. The outer pressure ring (23) is covered on the inner pressure ear (31). A guide ear (24) is provided on the plate surface of the guide disk (2) extending radially. A second fixed countersunk hole group (25) is provided through the guide disk (2).
8. A papermaking pulping disc according to claim 7, characterized in that: The guide ears (24) are arranged in a circular array along the central axis of the guide disk (2), and the guide disk (2) between adjacent guide ears (24) is set as a curved surface with an inner height and an outer ground. The second fixed countersunk hole group (25) is disposed on the guide disk (2) between adjacent guide ears (24) and is arranged in a circular array along the central axis of the guide disk (2).
9. A papermaking pulping flat grinding disc according to claim 7, characterized in that: A shaft hole (11) is provided through the center of the fixed inner disk (1), a first fixed countersunk hole group (12) is provided through the fixed inner disk (1), and an inner pressure ring (13) is provided on the upper part of the outer side wall of the fixed inner disk (1) extending radially. The inner pressure ring (13) is covered on the inner pressure ring (22).
10. A papermaking pulping flat grinding disc according to claim 9, characterized in that: The first fixed countersunk hole group (12) is arranged in a circular array along the central axis of the fixed inner disk (1).