Summary of the invention
The purpose of this invention is to provide the sexual intercourse of a kind of feeding coal performance line is straight linear, and feeding coal is stable, and feeder process is steady, error amount is little, very little, the no leak of operation mechanical wear amount, long full-automatic rationing machine of period of inspection and repair under lower-speed state.
According to technical scheme provided by the invention, installation shaft bearing below housing, in bearing seat, utilize the bearing installation main shaft, installation hopper on housing, the upper end of main shaft is positioned at hopper, in the upper end of main shaft scraper is installed, and on the main shaft below hopper impeller is installed, several blades are installed on impeller, between adjacent two blades, are formed the storing space.
At the purge hole that is provided for blowing compressed air in the storing space on the housing.Impeller is single impeller, and blade comprises metering blade and adjusting vane, and the metering vanes fixed is connected on the impeller, can measure the adjusting vane that blade does to move radially relatively and be connected on the metering blade.Self-locking is set between main shaft and the impeller transfers center fixture.Position corresponding to bearing on bearing seat is provided with bearing vapor seal induction opening, forms the vapor seal chamber between the upper end of bearing seat and impeller.
Follower is installed in lower end at main shaft, and housing is installed on the frame, and electrical motor is installed on frame, at the mouth connection reductor of electrical motor, on the output shaft of reductor power wheel is installed, and follower utilizes driving band to be connected with power wheel.Above follower, install and test the speed and low speed protection assembly.
At the purge hole that is provided for blowing compressed air in the storing space on the housing; Position corresponding to bearing on bearing seat is provided with bearing vapor seal induction opening, forms the vapor seal chamber between the upper end of bearing seat and impeller, and purge hole utilizes pipeline to be communicated with the vapor seal chamber.
Advantage of the present invention is: full-automatic rationing machine is owing to being the single impeller design, so simple and compact for structure; The linear relationship of feeding coal and rotating speed is a straight line; , no pulse phenomenon steady for the material process; Purging system is set in the body abdominal cavity regularly can eliminates discharging not to the utmost and stopping state, can guarantee that feeding coal is stable, the metering precision height; Because main body adopts slow running, so longer thereby each parts of body are produced the very little feeder work life of the caused abrasion loss of friction; Complete machine startup, adjusting and operating sequence control can realize multilayer, many group systems implementation Engineering Control by computer operation and control.
The specific embodiment
Among the figure: 1, scraper, 2, hopper, 3, impeller, 4, main shaft; 5, bearing, 6, the vapor seal bearing seat, 7, sweep module, 8, power wheel; 9, reductor, 10, electrical motor, 11, discharging opening, 12, the storing space; 13, follower, 14, driving band, 15, frame, 16, housing; 17, metering blade, 18 adjusting vanes, 19, pipeline, 20, self-locking transfers center fixture; 21, bearing vapor seal induction opening, 22, test the speed and low speed protection assembly, 23, control desk.
As shown in the figure: installation shaft bearing 6 below housing 16, in bearing seat 6, utilize bearing 5 that main shaft 4 is installed, installation hopper 2 on housing 16, the upper end of main shaft 4 is positioned at hopper 2, scraper 1 is installed in upper end at main shaft 4, impeller 3 is installed on the main shaft 4 below hopper 2, several blades are installed on impeller 3, between adjacent two blades, form storing space 12.During work, material is placed in the hopper 2, and when main shaft 4 rotated, impeller 3 and scraper 1 rotated, and by scraper 1 material is scraped to be formed in the interlobate storing space 12, and along with the rotation of impeller 3, the material that is positioned at storing space 12 is admitted to discharging opening 11.
At the purge hole 7 that is provided for blowing compressed air in storing space 12 on the housing 16,, guarantee accurate measurement so that the material that will residue in the storing space 12 is all sent in the discharging opening 11.Impeller 3 is single impeller, with simplified structure; Blade comprises metering blade 17 and adjusting vane 18, and metering blade 17 is fixedly connected on the impeller 3, can measure the adjusting vane 18 that blade 17 does to move radially relatively is connected on the metering blade 17, when needs are regulated, unclamp and connect the bolt of adjusting vane 18 on metering blade 17, make adjusting vane 18, after the inwall spacing of adjusting vane 18 and housing 16 puts in place along the moving radially of impeller 3, tight a bolt, have good mated condition with 16 of housings guaranteeing blade and impeller 3.
Self-locking is set between main shaft 4 and the impeller 3 transfers center fixture 20, this device can outsourcing, utilize this device after, can make main shaft 4 and impeller 3 be in best mated condition all the time.Position corresponding to bearing 5 on bearing seat 6 is provided with bearing vapor seal induction opening 21, forms the vapor seal chamber between the upper end of bearing seat 6 and impeller 3, to improve its sealing property.Follower 13 is installed in lower end at main shaft 5, housing 16 is installed on the frame 15, and electrical motor 10 is installed on frame 15, at the mouth connection reductor 9 of electrical motor 10, power wheel 8 is installed on the output shaft of reductor 9, and follower 13 utilizes driving band 14 to be connected with power wheel 8.
Above follower 13, install and test the speed and low speed protection assembly 22.At the purge hole 7 that is provided for blowing compressed air in storing space 12 on the housing 16; Position corresponding to bearing 5 on bearing seat 6 is provided with bearing vapor seal induction opening 21, between the upper end of bearing seat 6 and impeller 3, form the vapor seal chamber, purge hole 7 utilizes pipeline 19 to be communicated with the vapor seal chamber, so just can utilize the pressurized air that enters the vapor seal chamber to purge storing space 12.
Full-automatic rationing machine mainly horizontally rotates mechanics, pressurized air automatic guidance part, automatically controlled running part and computer operation by the metering feed and partly forms.
The material that is measured is scraped forming in the storing space 12 of housing 16 by scraper 1 rotation, and material is moved 180 ° and enters feed opening 11 under the effect of metering impeller, is conveyed into then in other device.
Pressurized air automatic guidance part mainly is made up of compressed air source, pressure regulating valve, electromagnetic switch valve, pressure controller, flow controller and respective line etc.The bearing felt air system of forming by pressure regulating valve, electromagnetic switch valve and pressure controller and bearing vapor seal induction opening 21 etc., main effect is to prevent that the molecule material from bleeding in the inner chamber of bearing seat 6, solve the easy contaminated difficult problem of lubricating oil of bearing 5 effectively, can guarantee the rotation that bearing 5 is effective, safe, long-term.The body abdominal cavity purging air system that forms by pressure regulating valve, electromagnetic switch, pressure controller and flow controller and purge hole 7 etc., main effect is when the material in every group of interlobate storing space 12 of impeller 3 is moved to feed opening, its storing space 12 is purged by phased manner, quantitative material 100% in the impeller 3 is sent in the discharging opening 11, thereby guarantee the correctness of measuring, reach under rotating speed arbitrarily the quantitatively purpose of convey materials.The automatically controlled running part mainly is made up of regulated speed motor, governor, reductor 9, driving band 14, power wheel 8, follower 13 etc., and main effect is to make the feed function carry out the rotating speed automatically regulating in a low rotational velocity range.
The computer operation part mainly is made up of CRT monitor, operation board, operating sequence software and message handler etc.Main effect is that the operating order according to operating sequence software carries out automatic operation and operation information is fed back to the DCS system.
Characteristics of the present invention are: the bilobed wheel structure of traditional product is designed to have single group impeller of supplying with quantitative function; Design slow speed of revolution feeding structure provides the favorable mechanical performance guarantee for the stability of feed, the performance of blanking amount no pulse phenomenon; On the body housing around the cylindrical of impeller 3, be provided with a directed pressurized air spout, be used for when work, the material that does not fall into as yet between blade in the discharging opening all being blown in the discharging opening, to guarantee quantitative accuracy; Be provided with a gas sealing mechanism in bearing seat 6 and body bottom, and sealing air is guided in the middle of the impeller base, between metering blade 17, discharge, guarantee not have in the bearing seat 6 the material dirt and enter and influence the bearing mechanical characteristics.
Described full-automatic rationing machine is according to the physical parameter that is transferred material, designs housing 16, impeller 3, blade and definite sealing amount of air and the body purging air flow of its feeder.According to the adjusting variation range that is transferred material amount and inventory, the transmitting ratio and the automatically regulating span of control of design feeder.According to feeder functional parameter at work, parameter and logic modules such as the rate of change of the entry condition of the relevant convey materials process of design compilation, process control, inventory, safety guard-safeguard definite value.