CN212670129U

CN212670129U - Grinding disc of disc grinder

Info

Publication number: CN212670129U
Application number: CN202020782794.2U
Authority: CN
Inventors: 黄开森; 贾少军; 张先荣; 李泉志; 尤伟文; 黄宗伟; 吴齐清
Original assignee: Shanying South China Paper Co ltd
Current assignee: Shanying South China Paper Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2021-03-09
Anticipated expiration: 2030-05-13

Abstract

The utility model discloses a grinding disc of a disc grinder, which comprises a disc body; the disc surface of the disc body is provided with a plurality of grinding teeth, and the grinding teeth are arc-shaped; the plurality of grinding teeth are sequentially arranged on the disc surface along the rotating direction of the disc body, and tooth grooves are formed between every two adjacent grinding teeth; and a half gear is arranged in the tooth groove. The tooth profile design of grinding the tooth is the arc, has certain counter resistance to thick liquids, can not destroy fibrous wet weight, all is provided with half in every tooth's socket and keeps off, can satisfy the making beating requirement in workshop to improve the degree of kowtowing, with dividing the silk broom to be the main. The utility model has the advantages of the pulping process can avoid cutting off the fiber, and improves the flowing of the pulp.

Description

Grinding disc of disc grinder

Technical Field

The utility model relates to a pulping and papermaking disc grinder field especially relates to a disc grinder abrasive disc.

Background

A pulping and grinding machine for preparing chemimechanical pulp features that the wood chips or preheated wood chips are fed into grinding machine, and under the action of high-speed grinding disk, they are broken along the fibre direction in breaking region to become wood rods, which are then fed into grinding region, and under the action of grinding teeth, the wood rods are rubbed together to become wood fibres, which are finally separated into fibres and fine fibres.

The grinding disc of the original PM31 pulping disc grinder adopts TF34-143/144 grinding disc, the grinding disc has a small angle of about 9 degrees, and grinding teeth are straight teeth, so that the grinding disc has a certain cutting effect on fibers and is not beneficial to the flow of pulp.

SUMMERY OF THE UTILITY MODEL

Therefore, it is desirable to provide a disc refiner plate to solve the problems of prior art TF34-143/144 plates that have a fiber-cutting effect and are not conducive to slurry flow.

To achieve the above object, the inventors provide a disc grinder abrasive disc comprising a disc body;

the disc surface of the disc body is provided with a plurality of grinding teeth, and the grinding teeth are arc-shaped; the plurality of grinding teeth are sequentially arranged on the disc surface along the rotating direction of the disc body, and tooth grooves are formed between every two adjacent grinding teeth; and a half gear is arranged in the tooth groove.

As a preferred structure of the utility model, the disk body and the grinding teeth are made of G4-2.

As a preferred structure of the utility model, be provided with two at least partly keep off in the tooth's socket, each half fender in every tooth's socket all sets gradually along the length direction of tooth's socket.

As an optimized structure of the utility model, the distance between the adjacent grinding teeth is 3 mm.

As an optimized structure of the utility model, the width of the tooth socket is 3mm-4.5 mm.

As an optimized structure of the utility model, the depth of the tooth socket is 7mm-8 mm.

Different from the prior art, the grinding disc of the disc grinder in the technical scheme comprises a disc body; the disc surface of the disc body is provided with a plurality of grinding teeth, and the grinding teeth are arc-shaped; the plurality of grinding teeth are sequentially arranged on the disc surface along the rotating direction of the disc body, and tooth grooves are formed between every two adjacent grinding teeth; and a half gear is arranged in the tooth groove. The tooth profile design of grinding the tooth is the arc, has certain counter resistance to thick liquids, can not destroy fibrous wet weight, all is provided with half in every tooth's socket and keeps off, can satisfy the making beating requirement in workshop to improve the degree of kowtowing, with dividing the silk broom to be the main.

Drawings

FIG. 1 is a partial view of a grinding plate of a disc grinder according to an embodiment of the present invention;

FIG. 2 is a partial structure diagram of TF34-143/144 abrasive disc according to the background art of the present invention.

Description of reference numerals:

1. a tray body;

2. grinding the teeth;

3. a tooth socket;

4. and (5) half-gear.

Detailed Description

To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1, the utility model provides a disc grinder abrasive disc, for the actuating mechanism of slurrying disc grinder, make thick liquids fiberize at rotatory in-process, especially have certain counter resistance, can not destroy the wet weight of fibre, avoid cutting off fibers, improved the degree of kowtowing.

In a specific embodiment, the disc grinding machine grinding disc comprises a disc body 1, wherein the disc body 1 is in a disc shape, a plurality of grinding teeth 2 are arranged on the disc surface of the disc body 1, and the grinding teeth 2 are in an arc shape; a plurality of gerar grinding 2 set gradually in quotation department along 1 direction of rotation of disk body, specifically, each gerar grinding 2 uses the centre of a circle of disk body 1 as the center, sets up in quotation department divergently, and the crooked direction of gerar grinding 2 is unanimous, all sets up towards 1 direction of rotation of disk body like the crooked direction of gerar grinding 2, or the crooked direction of gerar grinding 2 all sets up the direction of rotation of disk body 1 dorsad. Referring to fig. 2, compared with the TF34-143/144 grinding plate, the angle is smaller, about 9 degrees, the grinding teeth 2 are straight teeth and have a certain cutting effect on fibers, and the grinding plate of the disc grinder has certain reverse resistance on pulp because the tooth form design of the grinding teeth 2 is arc-shaped, so that the wet weight of the fibers cannot be damaged, the fibers are not cut basically, and the pulp is always in a fiber state after being fiberized.

Tooth grooves 3 are formed between the adjacent grinding teeth 2; the tooth socket 3 is internally provided with a half stop 4 which can be marked by a circle in figure 1, so that the beating requirement of a workshop can be met, the beating degree is improved, and the devillicating broom is mainly used. In a preferred embodiment, at least two half-steps 4 are arranged in the tooth slot 3, and each half-step 4 in each tooth slot 3 is arranged in sequence along the length direction of the tooth slot 3.

The beating degree of the disc mill grinding disc before beating is 25 degrees SR, the humidity is 8g, the beating degree after beating is 28 degrees SR, the humidity is 8g, the yield of the disc mill is 60-250 tons/day, and the concentration is 5%.

In a further embodiment, the material of the disc body 1 and the grinding teeth 2 is G4-2(17-4PH precipitation hardening stainless steel), and the material is characterized by very good toughness, so that the disc body 1 and the grinding teeth 2 made of the material cannot cause grinding teeth of the grinding disc if foreign matters enter the disc body and the grinding teeth in the working process.

In one embodiment the distance between adjacent grinding teeth 2 is 3 mm.

In one embodiment, the width of the tooth grooves 3 is 3mm-4.5mm, and the tooth grooves 3 are designed to be relatively wide due to the high concentration, the high wet weight of the fibers and the long fibers, so that the throughput can be ensured, and the yield can be improved.

In one embodiment, the depth of the gullets 3 is 7mm-8 mm.

It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.

Claims

1. A disc grinding machine grinding disc is characterized by comprising a disc body;

2. A refiner plate according to claim 1 wherein the disc body and grinding teeth are G4-2.

3. A disc refiner plate according to claim 1 wherein at least two half steps are provided in each tooth slot, each half step in each tooth slot being arranged in sequence along the length of the tooth slot.

4. A refiner plate according to claim 1 wherein the spacing of adjacent teeth is 3 mm.

5. A refiner plate according to claim 1 wherein the gullets have a width of 3mm to 4.5 mm.

6. A refiner plate according to claim 1 wherein the gullets have a depth of 7mm to 8 mm.