CN-224221455-U - A big dish that is used for super little rubbing crusher's area lightening hole

CN224221455UCN 224221455 UCN224221455 UCN 224221455UCN-224221455-U

Abstract

The utility model provides a big disc with lightening holes for an ultrafine grinder, which relates to a big disc structure, comprising a big disc body which is positioned in the ultrafine grinder and is driven to rotate by a rotary driving group, wherein a plurality of groups of wear-resisting plates are fixedly distributed on the circumferential edge of the big disc body along the circumferential direction, hammer heads are correspondingly arranged at the edges of the wear-resisting plates, the wear-resistant plate and the wear-resistant plate are locked on the large disc body through screws, the gravity centers of the wear-resistant plate and the hammer head are higher than the horizontal center plane of the large disc body, and the weight-reducing holes are formed in the large disc body area covered by the wear-resistant plate.

Inventors

ZHAO YUNFENG
HE ZHICHANG
SHI BIN
LIANG GUANGCAI
ZHUANG DI
MA QINGSONG

Assignees

布勒(常州)机械有限公司

Dates

Publication Date: 20260512
Application Date: 20250314

Claims (4)

1. A big dish of area lightening hole for superfine pulverizer, its characterized in that, including being located superfine pulverizer and driving rotatory big dish body (1) through rotary drive group, the circumference edge of big dish body (1) is fixed with multiunit antifriction plate (2) along the hoop arrangement, and tup (3) correspond to be arranged in the edge of antifriction plate (2), and it passes through the screw lock with antifriction plate (2) on big dish body (1), the focus of antifriction plate (2) and tup (3) is higher than the horizontal center plane of big dish body (1), and lightening hole (4) are seted up in the big dish body (1) region that is covered by antifriction plate (2).
2. The big disc with the lightening holes for the superfine pulverizer according to claim 1, wherein the wear plates (2) are provided with the same eight groups and are fan-shaped, edge arc sections of the eight groups of wear plates (2) are connected end to form a circular ring concentric with the big disc body (1), two groups of the same lightening holes (4) are formed in the area of the big disc body (1) covered by each group of wear plates (2), and each group of lightening holes (4) is fan-shaped.
3. A large disc with lightening holes for ultra-fine pulverizer according to claim 2, characterized in that the peripheral edge of the large disc body (1) is provided with a ring-shaped mounting groove, and the wear plate (2) is arranged in the mounting groove to form a horizontal plane with the top surface flush with the top surface of the large disc body (1).
4. A large disc with weight reducing holes for an ultra-fine pulverizer according to claim 3, characterized in that the rotary driving group comprises a driving shaft (7), a cover disc (5), a tray (6) and a belt wheel (9), wherein the driving shaft (7) vertically penetrates through the center of the large disc body (1), the top end of the driving shaft is fixedly provided with the cover disc (5) which is used for being in compression joint with the top side of the large disc body (1) and the tray (6) which is supported on the bottom side of the large disc body (1), the cover disc (5), the large disc body (1) and the tray (6) are connected through bolt locking, the driving shaft (7) is installed on the base of the ultra-fine pulverizer through a bearing (8), and the belt wheel (9) at the bottom end of the driving shaft drives the large disc body (1) to rotate at a high speed through a matched driving motor.

Description

A big dish that is used for super little rubbing crusher's area lightening hole Technical Field The utility model relates to a large disc structure, in particular to a large disc with lightening holes for an ultrafine grinder. Background In the feed processing industry, the feed is required to be crushed into finer particles with the particle size of more than 80 meshes or more and occupies a large area or finer because the digestive system of the aquatic animals is relatively simple, so that the feed is required to be subjected to superfine grinding, superfine grinding materials can improve the mixing uniformity of the aquatic feed, facilitate the absorption of pre-conditioning water and heat, reduce the abrasion of a puffing extruder, enable the granulated feed to have good stability in water, greatly improve the digestion and absorption effects of the feed in the aquatic animals and reduce the pollution of a raising water body. The material to be crushed enters the superfine crusher through the feed inlet and falls onto a large disc rotating at high speed, hammers distributed in a circumferential array are arranged at the edge of the large disc, the hammers strike the material at high speed to crush the material, and the material is driven by the hammers to move at high speed and is hammered on the gear ring, so that secondary and repeated crushing of the material is realized. Under the action of negative pressure, air enters a crushing area from a leeward cavity through a gap between a high-speed large disc and a gear ring, carrying materials into an outer cavity of a guide ring, the movement track of the materials in the outer cavity of the guide cover is shown as in figure 6, the materials are tightly attached to the inner side surface of an outer ring plate of the guide cover under the action of centrifugal force, a part of the materials directly spirally move into a circulation overflow cavity, and a part of the materials are expected to be reflected by a rib plate of the guide cover to change the track and then enter the circulation overflow cavity. The material is sucked into the inner cavity of the guide cover by negative pressure, the classifying wheel rotates and drives the material entering the region of the classifying wheel to rotate together, the small-mass particles are sucked into the classifying wheel by negative pressure and then discharged from a discharge (air) port, the large-mass particles are thrown out of the inner cavity of the guide cover by the classifying wheel and finally fall onto the high-speed large disc, and the particles return to the crushing region through gaps between the inner ring plate of the guide cover and the high-speed large disc. The load born by the large disc rotating assembly of the superfine pulverizer is mainly centrifugal force generated by high-speed rotation of the large disc, and secondly, load generated by pulverized materials is subjected to stress analysis aiming at a large disc dangerous section B, wherein F1 is centrifugal force of the outer part of the dangerous section of the large disc, F2 is centrifugal force of a wear-resisting plate and a hammer, F3 is tangential load equivalent to the hammer, T is bending moment generated by F2 relative to the middle surface (horizontal center surface) of the large disc, and T=F2×h. In view of the above, the defects and shortcomings of the prior art are found as follows: and carrying out finite element analysis on the rotating assembly to obtain a stress cloud picture of the large disc, wherein the stress at the dangerous section stress concentration position of the large disc is about 170-180Mpa, the stress of a large disc wear-resisting plate coverage area is close to zero, the material of the large disc in the area is redundant, the structural strength of the large disc is not assisted, and the centrifugal force generated by the material in the area introduces unnecessary stress. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide a large disc with lightening holes for an ultrafine grinder, and the use effect of the large disc is improved by removing materials at the position with smaller stress of the covering area of a wear-resistant plate. The utility model provides the following technical scheme: The utility model provides a big dish of area lightening hole for superfine pulverizer, includes the big dish body that is located superfine pulverizer and passes through rotation driving group drive rotation, big dish body's circumference edge is fixed with multiunit antifriction plate along the circumference arrangement, and the tup corresponds to be arranged in antifriction plate's edge, and it passes through the screw lock with antifriction plate and be locked on big dish body, antifriction plate and tup's focus is higher than the horizontal central plane of big dish body, and the lightening hole is opened in the big dish body region that is covered by