CN207839117U

CN207839117U - A kind of mill lid of medium-speed pulverizer

Info

Publication number: CN207839117U
Application number: CN201721720798.2U
Authority: CN
Inventors: 田莹
Original assignee: Jinan Heavy Industry JSCL
Current assignee: Jinan Heavy Industry JSCL
Priority date: 2017-12-12
Filing date: 2017-12-12
Publication date: 2018-09-11
Anticipated expiration: 2027-12-12

Abstract

The utility model discloses a kind of mill lid of medium-speed pulverizer, including mill lid ontology, the mill lid ontology generally inclination angle is the pyramidal structure of α, is planar structure inside and outside the top of pyramidal structure, and bottom outer is equipped with platform；It is equipped with barrel at mill lid bodies top planar structure, threaded hole is equipped in the middle part of barrel；It is equipped with column casing at the platform of mill lid ontology, stepped hole is equipped in the middle part of column casing.The utility model wall thickness is wear-resisting; material fluidity is good when use; not windrow; neutral threaded hole is very convenient for installing and dismounting; using wear-resistant material long lifespan; drilling tapping position is needed to be easily worked using common material, mill lid connecting hole protects bolt head, pre-buried barrel, column casing to increase not easily to fall off with the bonded area of wear resistant cast iron using counterbore.

Description

A kind of mill lid of medium-speed pulverizer

Technical field

The utility model is related to a kind of mill lids of medium-speed pulverizer, belong to coal pulverizer field of mechanical technique.

Background technology

Medium-speed pulverizer is in thermal power plant, coal chemical industry, building material cement production line etc. application than wide.Its structure (as shown in Figure 6) includes separator and tremie pipe 8, middle casing 9, grinding roller 10, mill and nozzle ring portion 11 etc., raw material from top to bottom Mill center is fallen on by center tremie pipe, the mill that constant speed rotary uniformly is divided raw material by means of the effect of centrifugal force outward It dissipates, forms it into certain thickness material bed.Material is rolled by multiple grinding rollers on mill again simultaneously in the process, and in pressure It is crushed under the action of roller.Centrifugal force it is continuous drive under so that material is constantly moved to mill outer rim, leave the object of mill Material, which encounters the hot gas entered in mill by vane and rises through mill middle casing therewith, to be entered in separator, in this process Middle material has carried out sufficient heat exchange with hot gas, and moisture is evaporated rapidly, and separator controls the finished product grain of grinding machine outlet Degree, the particle more than predetermined size are detached, return to mill, the particle met the requirements is only allowed to pass through.The size one of material As require to be no more than 40mm, fallen on mill from central tremie pipe, the center of mill is there are one mill lid, and the prior art is using flat And mill lid made of steel plate is easy windrow, grinds interior temperature height and is easy to happen danger.

Invention content

Technical problem to be solved in the utility model is in view of the defects existing in the prior art, to provide a kind of structure letter Single, economical and practical casting wear-resistant mill lid.

To solve this technical problem, the utility model provides a kind of mill lid of medium-speed pulverizer, including mill lid sheet Body, the mill lid ontology generally inclination angle are the pyramidal structure of α, are planar structure, bottom inside and outside the top of pyramidal structure Portion outer is equipped with platform；It is equipped with barrel at mill lid bodies top planar structure, threaded hole is equipped in the middle part of barrel；In mill lid It is equipped with column casing at the platform of ontology, stepped hole is equipped in the middle part of column casing.

It is right-hand thread that the barrel outer circle, which uses helicitic texture, thread rotary orientation, and the rotation direction of threaded hole is a left side for negative direction Screw thread.

The column casing outer circle uses groove structure.

The inclination alpha is 25 ° -35 °.

The mill lid ontology is made of wear resistant cast iron casting, and wherein barrel and column casing is processed into using common iron； The barrel and column casing are cast as one with mill lid ontology.

Advantageous effect：The utility model wall thickness is wear-resisting, and material fluidity is good when use, and windrow, neutral threaded hole are not used for Installing and dismounting is very convenient, using wear-resistant material long lifespan, needs drilling tapping position to be easily worked using common material, mill Lid connecting hole protects bolt head, pre-buried barrel, column casing to increase not easily to fall off with the bonded area of wear resistant cast iron using counterbore.

Description of the drawings

Fig. 1 is the structural representation front view of the utility model；

Fig. 2 is the structural representation sectional view of the utility model；

Fig. 3 is the portions the I enlarged diagram of the utility model Fig. 2；

Fig. 4 is the portions the II enlarged diagram of the utility model Fig. 2；

Fig. 5 is the portions the III enlarged diagram of the utility model Fig. 4；

Fig. 6 is the scheme of installation of the utility model.

In figure：1 mill lid ontology, 2 barrels, 3 column casings, 4 platforms, 5 threaded holes, 6 stepped holes, 7 groove structures, 8 separators And tremie pipe, 9 middle casings, 10 grinding rollers, 11 mills and nozzle ring portion.

Specific implementation mode

The utility model is specifically described with reference to the accompanying drawings and embodiments.

Fig. 1 show the structural representation front view of the utility model.

Fig. 2 show the structural representation sectional view of the utility model.

The utility model includes mill lid ontology 1, the generally pyramidal structure of the mill lid ontology 1, the pyramidal structure Inclination angle is α, and the α is 25 ° -35 °.

It is planar structure inside and outside the top of the pyramidal structure, bottom outer is equipped with platform 4.

Barrel 2 is equipped at the 1 top planes structure of mill lid ontology, 2 middle part of barrel is equipped with threaded hole 5 (such as Fig. 3 institutes Show), threaded hole 5 is for installing hanging apparatus.

It is right-hand thread that 2 outer circle of the barrel, which uses helicitic texture, thread rotary orientation, and the rotation direction of threaded hole 5 is negative direction Left-hand thread.

Column casing 3 is equipped at the platform 4 of the mill lid ontology 1,3 middle part of column casing is equipped with stepped hole 6 (as shown in Figure 4), uses In installation bolt.

3 outer circle of the column casing uses groove structure 7.

Fig. 5 is the portions the III enlarged diagram of the utility model Fig. 4.

The mill lid ontology 1 is made of wear resistant cast iron casting, and wherein barrel 2 and column casing 3 are made of common iron, institute Barrel 2 and column casing 3 is stated to be cast as one with mill lid ontology 1.

The utility model wall thickness is wear-resisting, and material fluidity is good when use, not windrow, neutral threaded hole for installing and dismounting very It is convenient, using wear-resistant material long lifespan, need drilling tapping position to be easily worked using common material, mill lid connecting hole is adopted Bolt head, pre-buried barrel, column casing is protected to increase not easily to fall off with the bonded area of wear resistant cast iron with counterbore.

The utility model the embodiment above, is merely illustrative, be not it is only, it is all in the scope of the utility model Or the change in equivalent the scope of the utility model is surrounded by the utility model.

Claims

1. a kind of mill lid of medium-speed pulverizer, it is characterised in that：Including mill lid ontology (1), the mill lid ontology (1) is whole The pyramidal structure for being α for inclination angle, is planar structure inside and outside the top of pyramidal structure, and bottom outer is equipped with platform (4)；It is grinding It is equipped with barrel (2) at disk cover ontology (1) top planes structure, threaded hole (5) is equipped in the middle part of barrel (2)；In mill lid ontology (1) Platform (4) at be equipped with column casing (3), stepped hole (6) is equipped in the middle part of pin (3).

2. the mill lid of medium-speed pulverizer according to claim 1, it is characterised in that：Barrel (2) outer circle uses screw thread Structure, thread rotary orientation are right-hand thread, and the rotation direction of threaded hole (5) is the left-hand thread of negative direction.

3. the mill lid of medium-speed pulverizer according to claim 1, it is characterised in that：Column casing (3) outer circle uses groove Structure (7).

4. the mill lid of medium-speed pulverizer according to claim 1, it is characterised in that：The inclination alpha is 25 ° -35 °.

5. according to the mill lid of claim 1-4 any one of them medium-speed pulverizers, it is characterised in that：The mill lid ontology (1) it is made of wear resistant cast iron casting, wherein barrel (2) and column casing (3) is processed into using common iron；The barrel (2) and Column casing (3) is cast as one with mill lid ontology (1).