CN102380450A

CN102380450A - Water spraying device for vertical mill

Info

Publication number: CN102380450A
Application number: CN2011103459843A
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: 2012-03-21
Anticipated expiration: 2031-11-07
Also published as: CN102380450B

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

The Vertical Mill water injector

Technical field

Present technique relates to water injector in a kind of vertical mill that is 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 of it has low consumption, advantage such as efficient, has been widely used in cement industry at present.The slag Vertical Mill grinds to form the main equipment of slag micropowder as slag, and characteristics energy-conservation, efficient with it, environmental protection more and more win people's attention and favor.In order to guarantee the stable operation of slag Vertical Mill, the vibrations of control body are most important.The uniform bed of material of thickness is to reduce the grinding machine vibration, guarantees a key factor of grinding machine stable operation.The mode of stablizing at present the bed of material is in Vertical Mill, to spray water, and increases the frictional force between the material, thereby guarantees on mill, to form the uniform bed of material, reduces the vibration of grinding machine.Yet in the actual production process, one-sided multiple spot is sprayed water now, and it is inhomogeneous to spray water, and can cause the material between mill and grinding roller inhomogeneous, thereby causes the high vibration of grinding machine, influences the normal operation of equipment.Chinese patent (CN200620043160.5) name is called the utility model patent of " water injector in a kind of vertical mill ", changes the bilateral water injector into by original one-sided water spray, has reached the purpose that prevents the grinding machine vibration.But in actual production, the pore of water spray is piled up easily under the high density dust atmosphere and is stopped up, and makes the mouth of pipe form piece, causes and can not spray water, and needs the post worker repeatedly to shut down the mill cleaning in a short time.Center tremie pipe blockage problem usually can occur for the slag Vertical Mill in addition, also need shut down dredging pipeline, these not only waste lot of manpower and material resources, have more influenced manufacturing schedule.Therefore be necessary to improve existing water injector, solve the problems of the prior art.

Summary of the invention

The purpose of present technique provides a kind ofly can better stablize the bed of material, reduce the grinding machine vibration, and the obstruction of prevent the to spray water mouth of pipe and center tremie pipe guarantees the Vertical Mill water injector of normal, the even running of slag Vertical Mill.

This Vertical Mill water injector comprises water inlet pipe and the distributive pipe that communicates with water inlet pipe, on distributive pipe, is connected with the water outlet ozzle, and said distributive pipe and water outlet ozzle are positioned at the air valve of Vertical Mill.

Above-mentioned Vertical Mill water injector, above-mentioned air valve comprise and link to each other and the turnover turnover panel of materail tube lower end sealing that the materail tube lower end is stretched in the shell of air valve, in said distributive pipe and the water outlet ozzle space between materail tube and air valve shell.Preferably, distributive pipe becomes the annular around materail tube, circumferentially is evenly equipped with the water outlet ozzle more than eight at distributive pipe.Preferably turnover panel is two, and when turnover panel became sealing state with materail tube, turnover panel and materail tube axial became 45 ° of angles.

Above-mentioned Vertical Mill water injector, air valve have twice turnover panel up and down.

The beneficial effect of present technique: because water injector is moved to top gas-operated lock air-valve above mill inner, make material concentrate uniform water absorption, make the bed of material evenly to distribute at narrow space; Because the water injector nozzle is not under the high density dust atmosphere, so ozzle is not stopping up; The impact flow of water in addition increases the flowability of slag, avoids slag to pile up and stops up tremie pipe; This water injector is simple, and consumptive material is few, has practiced thrift a large amount of costs.

Description of drawings

Fig. 1 is a Vertical Mill water injector front view.

Fig. 2 is the right view of Vertical Mill water injector.

Fig. 3 is that water inlet pipe is connected sketch map with distributive pipe etc.

Fig. 4 is the sketch map that distributive pipe is connected with the water outlet ozzle.

The specific embodiment

Referring to Fig. 1, the Vertical Mill water injector shown in 2, gas-operated lock air-valve 1 has twice turnover panel 2 up and down.A water injector 3 is all arranged at the top of per pass turnover panel 2.Below just wherein one turnover panel and a water injector describe.

Air valve 1 comprises and link to each other and turnover two turnover panels 5 of materail tube 4 lower ends sealings, and when turnover panel became sealing state with materail tube, turnover panel and materail tube axial became 45 ° of angles.The materail tube lower end is stretched in the shell 6 of air valve, and water inlet pipe 7 communicates with annular distributive pipe 8 through pipe joint, circumferentially is evenly equipped with 22 water outlet ozzles 9 at distributive pipe.Distributive pipe is around materail tube, in distributive pipe and the water outlet ozzle space 10 between materail tube and air valve shell.

In the present technique, in the gas-operated lock air-valve of slag Vertical Mill top, add water injector, because the lock wind effect of gas-operated lock air-valve; Can avoid the slag differential to condense in jet hole; Thereby plug nozzle has equally also been avoided the direct impact wear of air-flow to water pipe, prolongs the service life of water injector.

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

Adopt valve body twice water spray up and down, the gas-operated lock air-valve is because will lock wind, so it is poor to go up lower valve plate open and close life period, and the state of avoiding twice to open simultaneously, this just makes water injector to spray water by twice pair of material.And the tremie pipe tube wall flows down to come export out and can form one water curtain part water along the center, when material is scattered by centrifugal force, make to around the material that scatters can evenly inhale primary water again.

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

Claims

1. Vertical Mill water injector, it is characterized in that: comprise water inlet pipe and the distributive pipe that communicates with water inlet pipe, on distributive pipe, be connected with the water outlet ozzle, said distributive pipe and water outlet ozzle are positioned at the air valve of Vertical Mill.

2. Vertical Mill water injector as claimed in claim 1; It is characterized in that: above-mentioned air valve comprises and link to each other and the turnover turnover panel of materail tube lower end sealing; The materail tube lower end is stretched in the shell of air valve, in said distributive pipe and the water outlet ozzle space between materail tube and air valve shell.

3. Vertical Mill water injector as claimed in claim 2 is characterized in that: distributive pipe becomes the annular around materail tube, circumferentially is evenly equipped with the water outlet ozzle more than eight at distributive pipe.

4. Vertical Mill water injector as claimed in claim 3 is characterized in that: turnover panel is two, and when turnover panel became sealing state with materail tube, turnover panel and materail tube axial became 45 ° of angles.

5. Vertical Mill water injector as claimed in claim 2 is characterized in that: air valve has twice turnover panel up and down.