CN102380450B

CN102380450B - Water spraying device for vertical mill

Info

Publication number: CN102380450B
Application number: CN201110345984.3A
Authority: CN
Inventors: 余文; 吴春晖; 汤桌峰
Original assignee: SINOMA-LIYANG HEAVY MACHINERY Co Ltd
Current assignee: SINOMA-LIYANG HEAVY MACHINERY Co Ltd
Priority date: 2011-11-07
Filing date: 2011-11-07
Publication date: 2014-04-09
Anticipated expiration: 2031-11-07
Also published as: CN102380450A

Abstract

The invention provides a water spraying device for a vertical mill. By the device, a material layer can be better stabilized, the vibration of the mill is reduced, a spraying pipe orifice and a central blanking pipe are prevented from being blocked, and the normal and stable operation of the slag vertical mill is ensured. The device comprises a water inlet pipe and a water distribution pipe communicated with the water inlet pipe, wherein the water distribution pipe is connected with a water outlet pipe nozzle; and the water distribution pipe and the water outlet pipe nozzle are positioned in an air locking valve of the vertical mill.

Description

Water spraying device for vertical mill

Technical field

This technology relates to a kind of built-in sprinkler of vertical mill being used in the industry grinding system equipment such as cement, metallurgy, coal, electric power.

Background technology

Vertical Mill is as environmental protection, energy-conservation novel milling equipment, because it has low consumption, the advantage such as efficient, has been widely used at present cement industry.Slag vertical-mill grinds to form the main equipment of slag micropowder as slag, feature energy-conservation, efficient with it, environmental protection more and more wins people's attention and favor.In order to guarantee the stable operation of slag vertical-mill, the vibrations of controlling body are most important.The bed of material of even thickness is to reduce grinding machine vibration, guarantees a key factor of grinding machine stable operation.The mode of stablizing at present the bed of material is to spray water in Vertical Mill, increases the frictional force between material, thereby guarantees on mill, to form the uniform bed of material, reduces the vibration of grinding machine.Yet in actual production process, one-sided multiple spot water spray, sprays water inhomogeneous, can cause the material between mill and grinding roller inhomogeneous, thereby cause the high vibration of grinding machine, affects the normal operation of equipment now.Chinese patent (CN200620043160.5) name is called the utility model patent of " a kind of built-in sprinkler of vertical mill ", by original one-sided water spray, changes bilateral water injector into, has reached the object that prevents grinding machine vibration.But in actual production, the pore of water spray is easily piled up and is stopped up under high density dust atmosphere, makes the mouth of pipe form piece, causes and can not spray water, and needs post work repeatedly to shut down into mill and clear up in a short time.For slag vertical-mill, usually there will be center tremie pipe blockage problem in addition, also need to shut down and remove dredging pipeline, these not only waste a large amount of manpower and materials, have more affected manufacturing schedule.Therefore be necessary to improve existing water injector, solve the problems of the prior art.

Summary of the invention

The object of this technology is to provide a kind ofly can better stablize the bed of material, reduce grinding machine vibration, and the obstruction of prevent from the spraying water mouth of pipe and center tremie pipe guarantees the Water spraying device for vertical mill of normal, the even running of slag vertical-mill.

This Water spraying device for vertical mill, comprises water inlet pipe and the distributive pipe communicating with water inlet pipe, is connected with water outlet ozzle on distributive pipe, and described distributive pipe and water outlet ozzle are positioned at the air valve of Vertical Mill.

Above-mentioned Water spraying device for vertical mill, above-mentioned air valve comprises and materail tube lower end seals be connected and turnover turnover panel, materail tube lower end is stretched in the shell of air valve, in described distributive pipe and the water outlet ozzle space between materail tube and air valve shell.Preferably, distributive pipe becomes the annular around materail tube, at distributive pipe, is circumferentially evenly equipped with more than eight water outlet ozzles.Preferably turnover panel is two, when turnover panel becomes sealing state with materail tube, and the angle axial at 45 ° of turnover panel and materail tube.

Above-mentioned Water spraying device for vertical mill, air valve has upper and lower twice turnover panel.

The beneficial effect of this technology: inner owing to water injector being moved to above mill to top gas-operated lock air-valve, at narrow space, make material concentrate uniform water absorption, the bed of material can be uniformly distributed; Because water injector nozzle is not under high density dust atmosphere, so ozzle is not stopping up; The impact flow of water in addition, increases the mobility of slag, avoids slag to pile up and stops up tremie pipe; This water injector is simple, and consumptive material is few, has saved a large amount of costs.

Accompanying drawing explanation

Fig. 1 is Water spraying device for vertical mill front view.

Fig. 2 is the right view of Water spraying device for vertical mill.

Fig. 3 is the connection diagrams such as water inlet pipe and distributive pipe.

Fig. 4 is the schematic diagram that distributive pipe is connected with water outlet ozzle.

The specific embodiment

Referring to the Water spraying device for vertical mill shown in Fig. 1,2, gas-operated lock air-valve 1 has upper and lower twice turnover panel 2.A water injector 3 is all arranged at the top of per pass turnover panel 2.Below just one turnover panel and a water injector wherein describe.

Air valve 1 comprises and materail tube 4 lower ends seal be connected and turnover two turnover panels 5, when turnover panel becomes sealing state with materail tube, and the angle axial at 45 ° of turnover panel and materail tube.Materail tube lower end is stretched in the shell 6 of air valve, and water inlet pipe 7 communicates with annular distributive pipe 8 by pipe joint, at distributive pipe, is circumferentially evenly equipped with 22 water outlet ozzles 9.Distributive pipe is around materail tube, in distributive pipe and the water outlet ozzle space 10 between materail tube and air valve shell.

In this technology, in the gas-operated lock air-valve of slag vertical-mill top, add water injector, due to the lock wind effect of gas-operated lock air-valve, can avoid slag differential to condense in jet hole, thereby plug nozzle, has equally also avoided the direct impact wear of air-flow to water pipe, extend the service life of water injector.

Adopt annular conduit Multipoint Uniform water spray, because the valve plate of the twice up and down open and close of gas-operated lock air-valve has certain time interval, when closing, material can fully absorb water.And valve plate becomes miter angle sealing, makes surrounding water can be good at permeating to centre.

Adopt upper and lower valve body twice water spray, gas-operated lock air-valve be because will lock wind, so upper lower valve plate open and close life period is poor, and the state of avoiding twice simultaneously to open, this just makes water injector to spray water by twice pair of material.And part Shui Yan center tremie pipe tube wall flows down to come export out and can form one water curtain, when material is scattered by centrifugal force, makes the material scattering to surrounding can evenly inhale one time again water.

Distributive pipe is placed on to material blanking tube in valve body (materail tube) outer end, has avoided the direct impact of material, reduced the wearing and tearing of water injector.Increased its service life.

Claims

1. Water spraying device for vertical mill, is characterized in that: comprise water inlet pipe and the distributive pipe communicating with water inlet pipe, be connected with water outlet ozzle on distributive pipe, described distributive pipe and water outlet ozzle are positioned at the air valve of Vertical Mill; Above-mentioned air valve comprises and materail tube lower end seals be connected and turnover turnover panel, and materail tube lower end is stretched in the shell of air valve, in described distributive pipe and the water outlet ozzle space between materail tube and air valve shell; Distributive pipe becomes the annular around materail tube; Turnover panel is two, when turnover panel becomes sealing state with materail tube, and the angle axial at 45 ° of turnover panel and materail tube.

2. Water spraying device for vertical mill as claimed in claim 1, is characterized in that: at distributive pipe, be circumferentially evenly equipped with more than eight water outlet ozzles.

3. Water spraying device for vertical mill as claimed in claim 1 or 2, is characterized in that: air valve has upper and lower twice turnover panel.