CN2155548Y

CN2155548Y - Device for measuring the thickness of sintered material layer

Info

Publication number: CN2155548Y
Application number: CN 93207293
Authority: CN
Inventors: 郝俊宇; 吕晓云; 郑春栋; 张一方; 麻爱萍
Original assignee: Taiyuan Iron & Steel Co Shanxi Prov
Current assignee: Taiyuan Iron & Steel Co Shanxi Prov
Priority date: 1993-03-25
Filing date: 1993-03-25
Publication date: 1994-02-09
Anticipated expiration: 2003-03-25

Abstract

The utility model provides an on-line automatic detecting device for the detecting the thickness of a material layer of a sintering machine. The utility model is horizontally provided with a floating rod (4) on a sintered material layer (2); the floating rod (4) moves up and down as the thickness of the material layer is changed, and a chain type flexible mechanical transmission system is composed of a steel cable (7), a fixed pulley (8), a following pulley (9), balance weight (11), etc. A thickness signal of the material layer is transmitted to an angular displacement encoder, and an output digital signal is sent to a computer for calculating and displaying the thickness h of the material layer. The utility model has the characteristics of simple structure, easy installation and manufacture, high detecting precision and strong stability. Simultaneously, the floating rod has the function of smoothing a material surface. Accordingly, the utility model has great functions on improving the yield and the quality of sintered ore and saving energy.

Description

Device for measuring the thickness of sintered material layer

The utility model belongs to the contact on-line automatic detection device, is used for the sintering pallet thickness of feed layer and detects.

The Detection ﹠ Controling of batch layer thickness of sintering machine have material impact to the production of sintering deposit, the fluctuation of thickness of feed layer can influence productivity of sinter, sinter quality and production cost, for different ores are carried out best sintering, just must determine optimum thickness, so, expect that thick continuous detecting is the necessary means of modern control sintering process.

Thickness of feed layer pick-up unit some advanced countries (as Japan) in the world is widely-used, and principal mode has float-type (making sensor with rotary transformer or selsyn), capacitive touch, the ultrasonic electric capacity that involves contactless etc.

Capacitive touch, contactless and ultrasonic type, at present domestic do not have similar homemade goods to drop into commercial production as yet, float-type bed of material thicknessmeter, domesticly succeeded in developing and carry out industrialness operation, " the batch layer thickness of sintering machine detector " stepped at " agglomerates of sintered pellets " 1987 the 1st periodicals discloses this thicknessmeter.Its structural principle is: the mechanical driving part of the pick-up unit of this thicknessmeter is by rotating floating drum, and rotatable rocking arm, zeroing detent mechanism are formed.Thickness of feed layer is transformed to electric signal Vs through floating drum, rotary transformer, directly is transformed to Is through handing over, by the current signal I that sends here in totalizer and the constant current unit _GSubtracting draws Is after calculating, and Is carries out thickness of feed layer and detects as the input signal of digital displaying signal or computing machine.What this thicknessmeter problem was to adopt between floating drum, rocking arm and the electromechanical transformation apparatus is the form of being rigidly connected, when if in a single day sintering deposit has abnormal conditions such as bulk to occur, mechanical driving parts such as connecting link will be broken, and the material of floating drum also there is higher requirement, the technology and the site environment that can not adapt to sintering machine, be difficult to normal continuously aborning the use, thereby do not form approved product always.

The purpose of this utility model is to provide a kind of simple in structure at the shortcoming and defect that has thicknessmeter now, makes easily and installs, and it is high to detect stability, adaptable float rod type sintering material layer thickness pick-up unit.

The purpose of this utility model is achieved in that a horizontal fly rod (or L type flat board) that can move up and down with thickness of feed layer h on the chassis charge level, length is identical with bed of material width, these fly rod two ends link to each other with the cloth body with chain cable, the fly rod vertical direction connects wire rope, wire rope walks around fixed pulley, with travelling block, the lower end is connected with counterweight and is used for regulating the pressure of fly rod to the bed of material, and has the function of smooth charge level concurrently.With having rotation axis and displacement coder to join on the travelling block.The position signalling that fly rod moves up and down with the bed of material by the transmission of above-mentioned gear train with the chain type flexibility, passes to displacement coder, carries out numerical coding, and the output digitally encoded signal is sent into COMPUTER CALCULATION, demonstration, realizes the detection of sintering material layer thickness h.

Advantage of the present utility model have following some:

(1) mechanical driving part of this bed of material pick-up unit is the transmission with the chain type flexibility, realizes the transmission of fly rod position signalling, and it is strong that this form specific rigidity connects transmission adaptability, can both use in any environment;

(2) detect the stability height, adopt high-precision photoelectric type displacement coder, can directly position signalling be converted to binary digital signal, so can guarantee the long-time stability of detection signal;

(3) accuracy of detection height, good reliability because of main accurate detection part is loaded on the non high temperature district, are not influenced by on-the-spot any adverse environment;

(4) simple in structure, make easily and install, also save any cooling and blow device simultaneously;

(5) fly rod has smooth charge level function concurrently, makes the smooth sintering quality that improves of charge level.

Description of drawings, below in conjunction with accompanying drawing the structure of this pick-up unit and work being elaborated also provides as embodiment.

Accompanying drawing 1 is the pick-up unit synoptic diagram, and each code name is among the figure:

1, chassis

2, the bed of material

3, cloth body

4, fly rod

5, chain cable

6, wire rope regulating device

7, wire rope

8, fixed pulley

9, with travelling block

10, displacement coder

11, counterweight

12, computing machine

13, rotation axis

Sintering pallet (1) drives sinter layer (2) and moves along accompanying drawing 1 direction of arrow, the fly rod (4) that is connected material distributing machine (3) by chain cable (5) is moved up and down with thickness of feed layer h, this position signalling is transmitted to the wire rope (7) that vertical direction connects fly rod (4) end again, by fixed pulley (8) and with travelling block (9), make with travelling block (9) along with corresponding this position signalling of wire rope rotates, and join by rotation axis (13) and displacement coder (10) with travelling block, so displacement coder (10) also rotates thereupon, the line number of going forward side by side word code, export digitally coded electric signal, if the signal of displacement coder output is D, the servo-actuated diameter of pulley is φ, behind the D signal input computing machine (12) with output, can calculate the thickness of feed layer h of this moment by following formula:

h＝πφD／256

Be connected in the pressure of counterweight (11) the scalable fly rod (4) of wire rope (7) lower end to the bed of material (2), and the effect of the smooth charge level of having held concurrently.By the zero point of wire rope regulating device (6) scalable correct detection device.Because displacement coder (10) is the output of photoelectric type noncontact numerical coding, thus the long-time stability of detection signal can be guaranteed, and can be used with any kind computing machine, finish calculating, demonstration, the warning of thickness of feed layer or directly carry out closed-loop control.

The fly rod material is selected refractory metal material for use, can improve fly rod serviceable life, and displacement coder is selected the high precision photoelectric type for use, is strong in order to ensure the accurately reliable and stability of pick-up unit.

At present, the thick detection device of this float rod type material drops into the industry operation at the Taiyuan Iron and Steel Co. sintering plant.Facts have proved that system design is reasonable, simple in structure, be easy to install, debugging, maintenance, stable and reliable operation, maximum deviation is less than ± 5 millimeters, and precision is better than national regulation index ± 10 millimeter, is convenient to promote the use of on the big-and-middle-sized at home sintering machine.

Claims

1, a kind of float rod type sintering material layer thickness pick-up unit, be by mechanical transmission mechanism, COMPUTER CALCULATION, display system is formed, this device is characterized in that mechanical transmission mechanism comprises: fly rod (4) two ends on the bed of material (2) are connected on the material distributing machine (3) with chain cable (5), the vertical direction at fly rod two ends connects wire rope (7), wire rope regulating device (6) is housed on the wire rope, wire rope is walked around fixed pulley (8) and with travelling block (9), the lower end is connected with counterweight (11), with the rotation axis on the travelling block (13) gear train formed of joint angle displacement encoder again;

This gear train is with the flexible transmission of chain type, the thickness of feed layer signal is passed to displacement coder carry out numerical coding, sends into COMPUTER CALCULATION, the detection of Display Realization thickness of feed layer.

2, according to the described pick-up unit of claim 1, it is characterized in that fly rod (4) also can adopt L type flat board, its material is selected refractory metal material for use.

According to the described pick-up unit of claim 1, it is characterized in that 3, displacement coder should be selected high precision photoelectric type displacement coder for use.

4, according to the described pick-up unit of claim 1, it is characterized in that, the counterweight of wire rope lower end (11), scalable fly rod (4) is to the pressure of the bed of material (2), and can play smooth effect to charge level.