CN101559397B

CN101559397B - Grinding system of micro-negative pressure raymond mill

Info

Publication number: CN101559397B
Application number: CN2009100117175A
Authority: CN
Inventors: 王彪; 于枫
Original assignee: ANHAI TALC Co Ltd LIAONING
Current assignee: ANHAI TALC Co Ltd LIAONING
Priority date: 2009-05-27
Filing date: 2009-05-27
Publication date: 2010-12-01
Anticipated expiration: 2029-05-27
Also published as: CN101559397A

Abstract

The invention relates to a grinding system of a micro-negative pressure raymond mill, which is characterized in that a raymond mill is connected with a powder gathering device that is connected with ablast blower by a return vent pipe that is provided with a regulating valve I, the blast blower is connected with the raymond mill by an air inlet pipe that is provided with two outlets, one of which is sequentially connected with a regulating valve II and a pulsed dust collector by a rest air pipe, and the other one thereof is sequentially connected with a regulating valve III and atmosphere by an air supplement pipe; the air supplement pipe is arranged on an outlet of the air inlet pipe at an inlet of a ring-shaped horizontal air box. Micro-negative pressure pneumatic structure can be formed inside a host machine of the raymond mill by accurately regulating the regulating valve I, the regulating valve II and the regulating valve III. The invention has the advantages of greatly improvingthe quality of working environment of operating workers and surrounding area, leading the yield of the raymond mill to be increased by approximate 25%, and generating great economic benefit.

Description

Grinding system of micro-negative pressure raymond mill

Technical field

The present invention relates to the powder manufacture field, relate in particular to a kind of grinding system of micro-negative pressure raymond mill.

Background technology

Society is showing improvement or progress day by day, make people to produce, the environmental quality requirement of life more and more higher, increasing people recognize the importance of environment, environmental problem has developed into the state basic policy height of a country.Raymond mill is a kind of use grinding machine very widely, the fineness of its product is generally at 325～400 orders, its major defect is: operation under positive pressure in the main frame, a large amount of dust of emerging has in process of production had a strong impact on the environmental quality of operator's healthy and surrounding area.

Summary of the invention

The purpose of this invention is to provide a kind of grinding system of micro-negative pressure raymond mill, make the interior pneumatic general layout of raymond grinding powder machine host change little negative pressure into, solved the problem of dust pollution in the production process by malleation.

For achieving the above object, the present invention is achieved through the following technical solutions:

Grinding system of micro-negative pressure raymond mill, jaw crusher is connected with the winnowing pan elevator, be provided with the swinging blanking device between winnowing pan elevator and the Raymond mill, Raymond mill is connected with powder aggregating device, be connected by backwind tube between powder aggregating device and the air blast, backwind tube is provided with control valve one, be connected by blast pipe between air blast and the Raymond mill, blast pipe is provided with two outlets, an outlet is connected with pulse dust collector with control valve two successively by lingering remnants of past customs pipe, an outlet is connected with atmosphere with control valve three successively by blowdown pipe, pulse dust collector is connected with atmosphere by blower fan, be provided with conveying worm below the pulsaire collector, conveying worm is connected with finished product bin respectively with powder aggregating device.

The blast pipe that described blowdown pipe is arranged on the porch of annular horizontal bellows exports.

A kind of grinding system of micro-negative pressure raymond mill, described control valve one, control valve two, control valve three can make the pneumatic general layout that forms little negative pressure in the Raymond mill main frame by accurately adjusting.

The invention has the beneficial effects as follows: improved operator's the working environment and the environmental quality of surrounding area greatly, and the output that makes raymond mill is brought up to 5 tons/hour by original 4 tons/hour, production capacity has improved closely 25% during platform, has produced huge economic benefit.

Description of drawings

Fig. 1 is raymond mill grinding system figure in the prior art;

Fig. 2 is grinding system of micro-negative pressure raymond mill figure of the present invention.

1-jaw crusher 2-winnowing pan elevator 3-rotary feeder 4-raymond mill 5-powder aggregating device 6-pulse dust collector 7-conveying worm 8-finished product bin 9-blower fan 10-lingering remnants of past customs pipe 11-backwind tube 12-air blast 13-blast pipe 14-analytical engine 15-main frame 16-annular horizontal bellows 17-control valve one 18-control valve two 19-control valves three 20-blowdown pipes among the figure

The specific embodiment

Be described in detail the present invention below in conjunction with description of drawings.

See Fig. 1, raymond mill grinding system in the prior art: raw material is crushed to a certain size granularity through jaw crusher 1, promote by winnowing pan elevator 2, the main frame 15 of sending into raymond mill 4 by rotary feeder 3 grinds again, distinguished and admirable the blowing out that powder after the grinding is bloated by air blast 12, analytical engine 14 through placing main frame 15 tops sieves, fineness is crossed thick person and is still fallen into main frame 15 and reface, the fineness person of meeting the specification is in company with the distinguished and admirable powder aggregating device 5 that enters, be discharged to finished product bin 8 after the collection, distinguished and admirable backwind tube by powder aggregating device 5 upper ends is gone into air blast 12 11 times, owing to each flange junction in the moisture that is contained in abrasive dust gas that evaporation produces when grinding and the whole airduct if the malfunctioning gas that leaks into airduct of sealing is arranged, cause air circulation to increase, this air quantity that increases enters pulse dust collector 6 along blast pipe 13 upper outlets between the annular horizontal bellows 16 of air blast 12 and raymond mill 4 and the lingering remnants of past customs pipe 10 between the pulse dust collector 6, be expelled to finished product bin 8 by conveying worm 7 in company with the distinguished and admirable powder of bringing into after pulse deduster 6 is collected, tail gas is arranged to atmosphere by blower fan 9.In the process of grinding because in main frame, be operation under positive pressure, cause that a large amount of dust is arranged in the workshop, had a strong impact on the healthy of operator, the environmental quality of periphery is also had certain influence.

See Fig. 2, grinding system of micro-negative pressure raymond mill of the present invention: in the blast pipe outlet of annular horizontal bellows 16 porch of raymond mill 4, be provided with a blowdown pipe 20, blowdown pipe 20 is provided with control valve 3 19, be provided with control valve 1 on the backwind tube 11, lingering remnants of past customs pipe 10 is provided with control valve 2 18, by accurate adjustment control valve 1, control valve 2 18, control valve 3 19.During adjustment, press the rated current of air blast 12 and adjust control valve 1, making backwind tube 11 interior gas flows is rated value, control valve 3 19 is all opened, accurately adjust control valve 2 18 then, the gas flow of control raymond mill 4 turnover, promptly analytical engine 14 gas flow of discharging is greater than in the blast pipe 13 of annular horizontal bellows 16 porch during gas flow, just can make the pneumatic general layout that forms little negative pressure in the Raymond mill main frame, general negative pressure is about 100～300Pa.Transforming back dust pollution phenomenon is effectively controlled, operator's the working environment and the environmental quality of surrounding area have been improved greatly, and the output that makes raymond mill brings up to 5 tons/hour by original 4 tons/hour, and production capacity has improved closely 25% during platform, has produced huge economic benefit.

Claims

1. grinding system of micro-negative pressure raymond mill, it is characterized in that, jaw crusher is connected with the winnowing pan elevator, be provided with the swinging blanking device between winnowing pan elevator and the Raymond mill, Raymond mill is connected with powder aggregating device, be connected by backwind tube between powder aggregating device and the air blast, backwind tube is provided with control valve one, be connected by blast pipe between air blast and the Raymond mill, blast pipe is provided with two outlets, an outlet is connected with pulse dust collector with control valve two successively by lingering remnants of past customs pipe, an outlet is connected with atmosphere with control valve three successively by blowdown pipe, and pulse dust collector is connected with atmosphere by blower fan, is provided with conveying worm below the pulsaire collector, conveying worm is connected with finished product bin respectively with powder aggregating device, and described little range of negative pressure is between 100～300Pa.

2. grinding system of micro-negative pressure raymond mill according to claim 1 is characterized in that, the blast pipe that described blowdown pipe is arranged on the porch of annular horizontal bellows exports.