CN213086454U

CN213086454U - Grinding disc with function of prolonging grinding time

Info

Publication number: CN213086454U
Application number: CN202021055120.9U
Authority: CN
Inventors: 蒋小军; 李锦�; 田晓辉; 罗冲; 严震; 赵杨; 蒋思蒙; 宋萍; 刘畅
Original assignee: Nantong Huayan Grinding Film Co ltd
Current assignee: Nantong Huayan Grinding Film Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-04-30
Anticipated expiration: 2030-06-10

Abstract

The utility model discloses an abrasive disc with extension defibrination time function, be non-isosceles trapezoid's rack including abrasive disc base member and cross-section, non-isosceles trapezoid's left apex angle A is the acute angle, non-isosceles trapezoid's right apex angle D is the obtuse angle, the abrasive disc base member is the fanning strip, the rack is radial distribution on the surface of mill base member, the rack is a long and a short staggered arrangement, adjacent two be formed with the tooth's socket between the rack, the tooth's socket is radial distribution, the tooth's socket width of interior department is less than the tooth's socket width of periphery department, the wide position department of the interior approximate outer fringe of tooth's socket is equipped with a plurality of dam. The utility model has the advantages of double functions, convenient and fast use and long pulping time.

Description

Grinding disc with function of prolonging grinding time

Technical Field

The utility model relates to a fiberizer technical field, concretely relates to abrasive disc with extension defibrination time function.

Background

Refiners are widely used in the refining of cellulose fibres or similar fibres, where the refiner plates are the core elements of the refiner and the racks on the surface of the refiner plates are the core elements of the refiner plates. In the refining process of cellulose fiber or similar fiber, the fiber is sheared and destroyed mainly by the edge of the cutting edge of the rack, and the cutting force or refining strength is adjusted by the design change of the width of the rack and the width of the groove; depending on the fiber properties and process conditions, it may be desirable to sever the fibers vigorously, and it may be desirable to avoid severing as much as possible. The existing grinding plate is basically a set single-function grinding plate, the section of a rack of the grinding plate is basically isosceles trapezoid and rectangle, and a tooth groove of the rack is an uninterrupted channel, so that the grinding time is short; in addition, the left vertex angle and the right vertex angle of the rack are equal angles, and the refining strength of the blade angle cannot be changed by changing the rotating direction; on the premise of not replacing the grinding plate, the requirements of low-strength grinding with low cutting force and high-strength grinding with severe cutting of fiber cannot be met simultaneously.

For example, chinese patent publication No. CN102086606A discloses a refiner disc for producing synthetic fiber pulp, wherein the teeth comprise a flat surface portion formed by the working surface of the disc and an arc surface portion having one side connected to the flat surface portion and the other side connected to the groove, i.e., the surface of the flat surface portion connected to the groove has a curvature. The adoption of the grinding sheet has the problems that: firstly, the arc-shaped angle of the edge of the grinding tooth reduces the cutting action of the grinding tooth on fibers, and is not suitable for the technological requirement of reinforced cutting of the fibers. And secondly, the arc angle of the grinding tooth edge gradually disappears in the abrasion process, so that the characteristic disappears.

For another example, chinese patent publication No. CN103374849A discloses a reversible low energy refiner plate. The adoption of the grinding sheet has the problems that: the grinding teeth and the two sides of the groove keep the same geometric structure, and the positive and negative rotation have the same cutting force.

At present, the grinding plates with different cutting forces are required to be replaced frequently to meet technological indexes, the production progress is influenced by the halt in the process, the labor capacity of workers is increased, and a large amount of waste is caused.

For this reason, it is desired to provide a suitable grinding plate to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses the technical scheme who takes is: the utility model provides an abrasive disc with extension grinds thick liquid time function, includes abrasive disc base member and the cross-section is the rack of non-isosceles trapezoid, the left apex angle A of non-isosceles trapezoid is the acute angle, the right apex angle D of non-isosceles trapezoid is the obtuse angle, the abrasive disc base member is the fan-shaped piece, the rack is radial distribution on the surface of mill base member, the rack is one long short staggered arrangement, adjacent two the length of rack differs 20mm, adjacent two be formed with the tooth's socket between the rack, the tooth's socket is radial distribution, the tooth's socket width at interior margin department is less than the tooth's socket width at outer fringe, the wide position department that is close to the outer fringe in the tooth's socket is equipped with a plurality of dam, and the dam staggered distribution of adjacent tooth's socket.

Preferably, the grinding plate is provided with a plurality of bolt holes.

Preferably, the angle a corresponds to an angle a radial edge for cutting and the angle D corresponds to an angle D radial edge for fluffing and brooming.

Preferably, the radial edge of the angle A and the radius line of the grinding sheet base body form an included angle of 0-45 degrees.

Preferably, the angle a is preferably 80 ° to 89 °, and the smaller the angle, the stronger the cutting force; the D angle is preferably 100-160 DEG, and the larger the angle is, the weaker the cutting force is.

Preferably, the width of the tooth surface of the rack is 1-6 mm, the width of the tooth bottom of the rack is 2-18 mm, and the height of the rack is 2-18 mm.

Preferably, the width of the groove surface of the tooth groove is 1-18 mm, and the width of the groove bottom of the tooth groove is 2.5-8 mm.

Preferably, the longer length of the rack is 138 mm; the shorter rack is shortened by 20mm from the inner edge outwards.

Preferably, the material of the abrasive disc includes, but is not limited to, metal, stone, ceramic, tungsten carbide, zirconia, alumina, silicon carbide, polyphenylene sulfide, high molecular polyethylene, MC6, engineering plastic.

Preferably, the number of the radial partitions of the grinding plate is 1-6.

The utility model has the advantages that: the utility model can rapidly change the cutting force of different blade angles of the rack by changing the rotation direction of the grinding disc through the rack with a non-isosceles trapezoid cross section, thereby changing the function of the grinding disc; the dam design of the utility model makes the pulp meet the resistance of the dam when passing through the tooth socket, reduces the flow velocity and prolongs the pulp grinding time; the utility model discloses long service life, the range of application is wide, and convenient to use is swift, has adapted to the requirement of fiber raw materials and technological condition variability, has guaranteed the continuity of production process, has reduced to shut down and has changed the influence of abrasive disc to the production progress, has reduced staff's the amount of labour, has saved the abrasive disc cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the rack of the present invention.

Fig. 3 is a schematic cross-sectional view of fig. 2.

In the figure: 101. Angle a radial edge, 102, angle D radial edge, 103, tooth face, 104, blade base, 105, rack, 106, tooth slot, 107, outer edge, 108, inner edge, 109, bolt hole, 110, dam.

Detailed Description

As shown in fig. 1 to 3, a grinding plate with a function of prolonging refining time comprises a grinding plate base body 104 and a rack 105 with a non-isosceles trapezoid ABCD section, wherein the left vertex angle a of the non-isosceles trapezoid is an acute angle, the right vertex angle D of the non-isosceles trapezoid is an obtuse angle, and the grinding plate base body 104 is a 90-degree fan-shaped piece.

The racks 105 are radially distributed on the surface of the grinding disc base body, and the racks 105 are not arranged in a group, so that the grinding disc has higher pumping force.

The number of the radial partitions of the grinding plate is 1.

The racks 105 are arranged in a staggered manner from long to short, the length difference between two adjacent racks 105 is 20mm, and a tooth groove 106 is formed between two adjacent racks 105.

The tooth grooves 106 are distributed in a radial shape, the width of the tooth grooves 106 at the inner edge 108 is smaller than that of the tooth grooves 106 at the outer edge 107, and the throughput of the pulp is improved.

2 dams 110 are arranged at the wider position close to the outer edge 107 in the tooth grooves 106, so that when pulp passes through the tooth grooves 106, the pulp meets the resistance of the dams 110, the flow rate is reduced, and the pulping time is prolonged.

The dams 110 of adjacent tooth slots 106 are staggered.

Two bolt holes 109 are symmetrically arranged on the grinding sheet.

The angle a corresponds to an angle a radial edge 101 for cutting and the angle D corresponds to an angle D radial edge 102 for fluffing and brooming.

The angle a radial edge 101 makes an angle of 3 ° with the radius line of the blade base 104, which facilitates control of the cutting force thereof.

The A angle is preferably 88 degrees, and the cutting force and the grinding intensity are high; the D angle is preferably 125-129 degrees, and the cutting force and the refining strength are low, and the cutting force is weaker when the angle is larger.

The width of the tooth surface 103 of the rack 105 is 1.6mm, the width of the tooth bottom of the rack 105 is 6mm, and the height of the rack 105 is 6.2 mm.

The slot bottom of the gullet 106 has a minimum width of 2.5 mm.

The longer rack 105 is 138mm long, starting at the inner edge 108 and ending at the outer edge 107; the shorter rack 105 is shortened by 20mm from the inner edge 108.

In the pulping process, when the process is adjusted, an old grinding disc is not required to be disassembled to replace a new grinding disc, only the rotating direction of the grinding disc needs to be changed, the angle A and the angle D are respectively used as working edge angles, and the generated cutting force is greatly different: the A angle can cut off the fiber violently; the angle D can avoid cutting the fiber as much as possible and has good fluffing and brooming effects on the fiber.

According to the refining process conditions: the rated power of the pulping machine is 200kw, the aramid fiber is processed by anticlockwise rotation at 1500kg/h, and the A-angle radial edge 101 is mainly cut off; the polypropylene fiber is processed by rotating clockwise at 2000kg/h, the D-angle radial edge 102 avoids cutting, and the fluffing and brooming are the main.

The utility model discloses a preparation can be accomplished to multiple material for use to the abrasive disc, including but not limited to metal, stone material, pottery, tungsten carbide, zirconia, aluminium oxide, carborundum, polyphenylene sulfide, polymer polyethylene, MC6, engineering plastics.

The utility model discloses a preparation can be accomplished for use multiple technology to the abrasive disc, including but not limited to casting, vulcanization, sintering, mechanical subtracting material processing, welding, 3D prints the vibration material disk technology.

The utility model discloses a grinding piece has difunctional and convenient to use swift advantage, can use extensive cellulose fiber or similar fibre to grind the thick liquid in-process, if: pulping and papermaking, aramid fiber preparation, papermaking tobacco sheets, nitrocellulose, acetate fibers, dietary fibers, alginate fibers, artificial board fibers, novel material fibers and the like.

The grinding disc of the utility model has very high application prospect, can be applied to a high-consistency pulping machine, a medium-consistency pulping machine and a low-consistency pulping machine which are classified from the suitability of the pulping concentration, and a single disc mill, a double disc mill and a multi-disc mill which are classified from the structure of the grinding disc, and improves the function options of the pulping machines, so that the single pulping machine achieves the multifunctional purpose; and grinding discs with straight teeth, arc teeth and H-shaped teeth can be designed on the basis, so that a wider pulping process is expanded.

Claims

1. A grinding plate with a function of prolonging grinding time is characterized by comprising a grinding plate base body (104) and gear racks (105) with a non-isosceles trapezoid cross section, wherein the angle A of the left vertex of the non-isosceles trapezoid is an acute angle, the angle D of the right vertex of the non-isosceles trapezoid is an obtuse angle, the grinding plate base body (104) is a fan-shaped piece, the gear racks (105) are radially distributed on the surface of the grinding plate base body, the gear racks (105) are arranged in a long-short staggered mode, the length difference between every two adjacent gear racks (105) is 20mm, a tooth slot (106) is formed between every two adjacent gear racks (105), the tooth slots (106) are radially distributed, the width of the tooth slot (106) at the inner edge (108) of the grinding plate base body (104) is smaller than that of the tooth slot (106) at the outer edge (107) of the grinding plate base body (104), and a plurality of dams (110) are arranged at wider positions close to the outer edge (107) in, the dams (110) of adjacent tooth slots (106) are staggered.

2. A refiner plate with a function of prolonging the refining time according to claim 1, wherein a plurality of bolt holes (109) are formed on the refiner plate.

3. A refiner plate with a refining time extending function according to claim 1, characterized in that the angle a corresponds to an angle a radial edge (101) for cutting and the angle D corresponds to an angle D radial edge (102) for fluffing and brooming.

4. A refiner plate with a refining time prolonging function according to claim 3, characterized in that the angle a radial edge (101) forms an angle of 0-45 ° with the radius line of the plate base body (104).

5. A refiner plate with a refining time prolonging function according to claim 1, wherein the angle a is 80-89 °, and the cutting force is stronger when the angle is smaller; the angle D is 100-160 degrees, and the larger the angle is, the weaker the cutting force is.

6. A refiner plate with a refining time prolonging function according to claim 1, wherein the width of the tooth surface (103) of the rack (105) is 1-6 mm, the width of the tooth bottom of the rack (105) is 2-18 mm, and the height of the rack (105) is 2-18 mm.

7. A refiner plate with a refining time prolonging function according to claim 1, wherein the width of the groove surface of the tooth grooves (106) is 1-18 mm, and the width of the groove bottom of the tooth grooves (106) is 2.5-8 mm.

8. A refiner plate with a refining time extending function according to claim 1, wherein the longer rack (105) is 138mm in length; the shorter rack (105) is shortened by 20mm from the inner edge outwards.

9. A refiner plate with a refining time prolonging function according to claim 1, wherein the number of the radial partitions of the refiner plate is 1-6.