CN201181276Y

CN201181276Y - On-line coarseness analyzer

Info

Publication number: CN201181276Y
Application number: CNU2008200200614U
Authority: CN
Inventors: 刘有德; 王卫江
Original assignee: YANTAI DEXIN INSTRUMENT CO Ltd
Current assignee: YANTAI DEXIN INSTRUMENT CO Ltd
Priority date: 2008-03-31
Filing date: 2008-03-31
Publication date: 2009-01-14
Anticipated expiration: 2018-03-31

Abstract

The utility model discloses an online grain size analyzer, which comprises a support rod with a bottom plate fixed on the lower part of a housing, a detection rod having an upper part sheathed on a fixing frame in the housing and a lower part protruding out of the housing, detection plates respectively arranged on the lower end of the detection rod and the bottom plate, and a spring arranged on an upper boss of the detection rod, wherein the spring can contact with the lower end face of an upper fixing frame; a cam on the motor output shaft in the housing can jack up the boss; an electric induction variator is connected with the detection rod through a rocker; a displacement-voltage signal conversion device is arranged on the upper end of the electric induction variator; and the lower part of the electric induction variator is a retractable rod and is fixed on the fixing frame. The online grain size analyzer has the advantages of no damage to the human and the environment by using electronic signals, real-time online detection, sensitive response to the grain size change, reliable operation, stable output signal, accurate measurement result, and more stable flotation indexes.

Description

A kind of online particle-size analyzer

Technical field

The utility model belongs to the pulp granularity analysis of components equipment technical field in the ore pulp fluid, especially relates to the online particle-size analyzer of the pulp granularity composition in a kind of continuous automatic on-line analysis to measure ore pulp fluid.

Background technology

China's grind grading overflow fineness is to control fineness indirectly by the control pulp density at present, because give ore deposit chats cement content inhomogeneous, sludge often causes the overground phenomenon of ore for a long time, and sludge after a little while, ore grinding runs thick again easily, and these bring harm all can for the ore sorting.Present analytical equipment, generally be that ultrasound wave pulp granularity analyser uses electronic ultrasonic, centrifugal ray hondrometer uses the β ray, therefore can work the mischief to human body and environment, need sampler or ore pulp pretreatment unit, because on-the-spot change of granularity situation complexity, sampling detects to adjust again and can produce hysteretic state, the floatation indicators bigger rough sledding that fluctuates sometimes occurs, thereby make the floatation indicators unstable operation reliable, influence the flotation quality.

Summary of the invention

The purpose of this utility model be to improve the deficiency of prior art and provide a kind of use the principle of electro-induction principle output electronic signal, not to human body and environment work the mischief, real-time online detects, to on-the-spot change of granularity situation be quick on the draw, reliable operation, stable output signal, measurement result accurately, avoided the bigger rough sledding of floatation indicators fluctuation, the online particle-size analyzer that floatation indicators is more tended towards stability.

The purpose of this utility model is to realize like this, a kind of online particle-size analyzer, be by support bar, shell and motor are formed, the outer bottom that is characterized in shell is fixed with support bar, the lower end of support bar is fixed with base plate, on the top suit fixed mount in the enclosure of feeler, shell is stretched out in the bottom, the lower end of feeler and base plate correspondence position are respectively equipped with a detecting plate, the upper boss of feeler is provided with spring, spring can contact with the lower surface of upper holder, and motor is fixing in the enclosure, is fixed with cam on the output shaft of motor, but cam jack-up boss, the electro-induction variator is connected by rocking bar with feeler, and the upper end of electro-induction variator is fixed with displacement-voltage signal conversion equipment, and the bottom of electro-induction variator is that expansion link and its lower end are fixed on the fixed mount.

Compared with the prior art the utility model has following distinguishing feature and good effect: the utility model adopts the principle of using electro-induction principle output electronic signal, use electronic ultrasonic unlike ultrasound wave pulp granularity analyser, centrifugal ray hondrometer uses the β ray, therefore can not work the mischief to human body and environment, the utility model sreen analysis instrument probe directly is inserted in and analyzes granularity in the ore pulp, change other type instrument and needed sampler or ore pulp pretreatment unit, thereby structure is comparatively simple, the measuring sonde spatial volume is little, can be directly installed on the ore slurry pipeline or in the chute, real-time online detects, on-the-spot change of granularity situation is quick on the draw reliable operation, stable output signal, realized online in real time continuous coverage, and measurement result is more accurate to ore particles granularity in the ore pulp that flows; The utility model particle-size analyzer, measure classification overflow fineness and directly perceived the demonstration serially and measure numerical value, the post personnel can in time adjust grinding machine mine-supplying quantity and amount of water according to the fineness situation, thereby make mog be in comparatively perfect condition all the time, create good conditions to flotation operation, change one day in the past simultaneously and surveyed an ore grinding enriched fineness, the on-the-spot then hysteretic state of adjusting again, avoided the floatation indicators bigger rough sledding that fluctuates sometimes greatly, thereby floatation indicators is more tended towards stability.

Technical feature of the present utility model is as follows:

Measured granularity area 0 .028～1.0mm in flow of slurry

2 of measured granularity number of levels

Measured value Mean Square Error is not more than 2%

The maximum region 20%～95% of control granularity rank content

The Minimum Area 30%～95% of control granularity rank content

Pipeline minimum diameter 120mm

This installs online particle-size analyzer and is used for pipeline or chute conveying are passed through in check and analysis in ball milling and grading technology process ore pulp component particle size, and other content value of grain graininess level in the ore pulp that demonstration is constantly detected on screen, and on adjusting gear, provide standard signal, and be delivered to control corresponding equipment, little processing measurement translator is adjusted parameter by Keyboard Control and input, shows measurement result by LCDs.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a kind of structural representation of the present utility model.

Embodiment

Embodiment, a kind of online particle-size analyzer, with reference to Fig. 1, be that shell 13 internal fixation have fixed mount 2, outer bottom at shell 13 is fixed with support bar 8, the lower end of support bar 8 is fixed with base plate 6, the top of feeler 5 is sleeved on the fixed mount 2 in the shell 13, shell 13 is stretched out in the bottom, the lower end of feeler 5 and base plate 6 correspondence positions are respectively equipped with a detecting plate 7, the upper boss 14 of feeler 5 is provided with spring 15, spring 15 can contact with the lower surface of upper holder 2, motor 3 is fixed in the shell 13, is fixed with cam 4 on the output shaft of motor 13, but cam 4 jack-up boss 14, electro-induction variator 10 is connected by rocking bar 9 with feeler 5, the upper end of electro-induction variator 10 is fixed with displacement-voltage signal conversion equipment 12, and the bottom of electro-induction variator 10 is that expansion link 1 and its lower end are fixed on the fixed mount 2, and this has constituted a kind of structure of the present utility model.

The utility model is to determine granulometric composition by the assay value of calculating granularity rank mean diameter in relatively institute's other percentage composition of the particle size fraction of surveying and mud sample, and specifically measuring process is as follows:

Slurries to be measured are put in the utility model bottom, motor 3 rotating band moving cams 4 rotate, thereby jack-up boss 14, move on the feeler 5, and drive electro-induction transducer 10 and constrictor 1 extension, when motor 3, when cam 4 can not withstand boss 14, feeler 5 moves down in the effect of spring 15, and drive electro-induction transducer 10 moves down compression expansion link 1, the particle 11 of the detecting plate 7 of the lower end of feeler 5 and base plate 6 correspondence positions in will the interlinear notes slurries like this, the diameter of particle 11 just converts the variation of electro-induction transducer 10 expansion links 1 displacement to like this, this changes again by displacement-voltage signal conversion equipment 12, and the voltage signal that is converted into standard provides the analysis foundation for little processing signals transducer.

Claims

1, a kind of online particle-size analyzer, be by support bar (8), shell (13) and motor (3) are formed, the outer bottom that it is characterized in that shell (13) is fixed with support bar (8), the lower end of support bar (8) is fixed with base plate (6), the top of feeler (5) is sleeved on the interior fixed mount (2) of shell (13), shell (13) is stretched out in the bottom, the lower end of feeler (5) and base plate (6) correspondence position are respectively equipped with a detecting plate (7), the upper boss (14) of feeler (5) is provided with spring (15), spring (15) can contact with the lower surface of upper holder (2), motor (3) is fixed in the shell (13), be fixed with cam (4) on the output shaft of motor (13), cam (4) but jack-up boss (14), electro-induction variator (10) is connected by rocking bar (9) with feeler (5), the upper end of electro-induction variator (10) is fixed with displacement-voltage signal conversion equipment (12), and the bottom of electro-induction variator (10) is that expansion link (1) and its lower end are fixed on the fixed mount (2).