CN2849623Y - Electrothermic melting device for X ray fluorescent analyzing sample - Google Patents

Abstract

The utility model relates to an electrothermal melting device for X-ray fluorescent analyzing samples, and belongs to the field of electrothermal furnances. The utility model is an improvement of a Japanese 'TR-Auto-Bead-1000M type glass bead melting and making device for X-ray fluorescent analyzing samples', and is composed of a melting furnace, an electric apparatus and a control part. The utility model is characterized in that the surface lining of a furnace cover, a buckle lining of the furnace cover, and the furnace chamber of the melting furnace all use an integral heat-insulating layer formed by that high temperature refractory ceramic fibers are molded in a one-step way. A heating body of the melting furnace uses a silicon carbide rod having long hot ends. A dc motor, an ac motor and a speed reducing device carried by the ac motor of the electric apparatus are all coaxially connected, and are controlled to run by PLC computers. The utility model has the advantages of simple structure, easy fabrication, low cost, high automaticity, convenient operation and maintenance, etc. The utility model also has the advantages that X-ray fluorescent analyzing samples, such as, ores, powder, etc., can be melted in labs, the operation is rapid and convenient, and the work efficiency is high.

Description

The electrothermal melting plant that the x-ray fluorescence analysis sample is used

Affiliated technical field

The utility model relates to the electrothermal melting plant that a kind of x-ray fluorescence analysis sample is used, and is to be used for the special-purpose melting plant that x-ray fluorescence analyzer is analyzed for powdery samples such as fusion ore and raw material.Belong to the electric furnace field.

Background technology

When powdery samples such as employing x-ray fluorescence analyzer analysis ore and raw material, in order to eliminate the matrix effect and the granularity effect of samples such as ore and raw material effectively, must be with sample earlier through the melting furnace fusion, just can analyze after making glassy print.Because after making glassy print, can eliminate the matrix effect and the granularity effect of sample inside effectively, guarantee the accuracy and the precision of x-ray fluorescence analysis.

Before the utility model, the laboratory of research department and factories and miness is adopted mostly and is satisfied production requirement from external introduction melting plant, for example from day island proper Tianjin company introduction " TR-Auto-Bead-1000M type x-ray fluorescence analysis sample melts the sample producing device with bead ", its weak point is that the introduction expense needs more than 70,000 dollars, expense is too high, and this device adopts relay control simultaneously, and automatic control level is low, use and keep in repair inconvenience, body of heater is short service life.

Summary of the invention

The purpose of this utility model is for solving the deficiency of said apparatus, and provide a kind of new have simple in structure, easy manufacturing, with low cost, automaticity is high, operation and maintenance is convenient, the electrothermal melting plant that the x-ray fluorescence analysis sample of long service life is used.

The purpose of this utility model reaches by following measures: the electrothermal melting plant that provides a kind of x-ray fluorescence analysis sample to use, by furnace cover lifting device (1), sprocket wheel (2), connecting rod (3) fascinates, chain safety guard (4), bearing block (5), rotating shaft (6), connector (7), bell (8), burner hearth (11), furnace enclosure (12), crucible holder (13), heater (14), coupling (15), direct current generator (16), alternating current generator (17), reductor (18), journey controller (19), spacing overlapping wheel the (20), transformer (21), controllable silicon (22), DC motor controller (23), control module (24), guidance panel (26), outside framework (30) and outer pasting board are formed, it is characterized in that having in the bell (8) bell face lining (10), between bell face lining and the burner hearth (11) bell button lining (9) is arranged, bell face lining, bell button lining is respectively the ceramic fibre thermal insulator of an integral body with burner hearth, burner hearth is in furnace enclosure (12) lining, the burner hearth rear wall is equipped with thermocouple, the burner hearth center is equipped with crucible holder (13), the crucible carriage is placed on the crucible holder top, the crucible carriage has two arm shapes or three arm shapes, every arm end has recessed of two placement crucibles, the lower end of crucible holder links to each other with coupling (15), and the coupling other end is ined succession and is with the direct current generator (16) of reductor; The front and back walls symmetry of furnace enclosure has a window, an Elema frame plate (31) respectively is installed on the window, the heater (14) that the long Elema system of 10～12 580mm is arranged, Elema frame plate from the furnace enclosure antetheca inserts, run through the burner hearth front and back walls and pass Elema frame plate on the furnace enclosure rear wall, Elema folder (28) is clamped in the Elema termination to aluminium pool bar (29), and aluminium pool bar also is fixed on the heating terminal plate (27) with screw; Furnace cover lifting device (1) connection chain band movable sprocket (2), the chain other end is connected with bell, and connector (7) connects bell and furnace enclosure; There are two groups of bearing blocks (5) to be fixed on the outside framework (30), rotating shaft (6) one end connecting shaft bearings, the other end is fixed on the both sides of furnace enclosure with enamel, wherein one group of rotating shaft is connected with the connecting rod that fascinates (3), and the connecting rod that fascinates connects spacing overlapping wheel the (20), journey controller (19), reductor (18) and alternating current generator (17); Alternating current generator (17) with its with reductor (18), direct current generator (16) and with reductor be coaxial the connection; Configuration PLC computer is made control module (24), and transformer (21), controllable silicon (22), DC motor controller (23), PLC computer, display (25) and guidance panel (26) are installed the left chamber at outside framework concentratedly.

The electrothermal melting plant that the utility model x-ray fluorescence analysis sample is used, outside framework (30) is made of angle steel, two Room about outside framework divides.Can two Room about outside framework be separated or merge according to user's needs.Stove part and AC and DC motor etc. are in the right ventricle, and main electrical equipment and control section are in left chamber.Right ventricle's stove partly has body of heater and mechanical component, by furnace cover lifting device (1), sprocket wheel (2), connecting rod (3) fascinates, chain safety guard (4), bearing block (5), rotating shaft (6), connector (7), bell (8), bell button lining (9), bell face lining (10), burner hearth (11), furnace enclosure (12), crucible holder (13), heater (14), coupling (15), Elema frame plate (31) and thermocouple are formed, electrical appliance part has direct current generator (16), alternating current generator (17), reductor (18), journey controller (19), spacing overlapping wheel the (20), heating terminal plate (27), Elema folder (28) and aluminium pool bar (29) are formed, and also have the panel of outside framework right ventricle and the outer pasting board of periphery in addition.There are transformer (21), controllable silicon (22), DC motor controller (23), control module (24), display (25), guidance panel (26) and the outer pasting board of the gate-type in outside framework outdoor week of a left side in chamber, an outside framework left side.

The electrothermal melting plant that the utility model x-ray fluorescence analysis sample is used, the furnace enclosure of stove part and the capping of bell are processed into by stainless steel, and the bell wall is made with the high-temperature alloy aluminium sheet.Bell face lining, bell button lining adopt the disposable respectively mold pressing of ceramic fibre of high-temperature flame-proof to make with burner hearth, and burner hearth is placed in the furnace enclosure that profile is square casing, and it is in the columned bell that bell face lining is placed in profile.Electrothermal melting plant of the present utility model, it is characterized in that described bell face lining, bell button lining are respectively the ceramic fibre thermal insulator of an integral body with burner hearth, bell face lining is the cavity that a circle has a bottom surface, bell button lining square-outside and round-inside, internal diameter is identical with bell face lining internal diameter, and bell button lining has flange respectively with bell face lining abutted surface, and two flanges inner and outer ring each other closely cooperate, the burner hearth profile is a rectangle, and interior sky is a square.Bell face lining, the bell button lining of ceramic fibre mold pressing do not burst with the long-term use of burner hearth, do not fall oxide layer, and heat preservation and insulation is good.The utility model is with bell face lining, bell button lining and the as a whole ceramic fibre thermal insulator of chamber design, and do not adopt day heat-insulation layer of island proper Tianjin company fritter insulation material assembly unit, be when considering powdery samples such as melting furnace high-temperature fusion ore and raw material, powdered reagent such as ore and raw material and flux can volatilize erosion gas, these gases are tried to sqeeze in wherever possible, get into the gap of every block of insulation material, make the heat insulating block large tracts of land suffer that etch destroys, thereby shortened the service life of stove greatly, and increase the labour intensity and the cost of maintenance, cleaning.The ceramic fibre thermal insulator of the integral body of the utility model design has significantly reduced the etch to thermal insulator of volatilization gas and flux, the service life of having improved stove.

Electrothermal melting plant of the present utility model has 10～12 holes that heater (14) is installed on the front and back walls of burner hearth, divide two misarrangement positions to arrange.The utility model is selected diameter 12mm, the long 240mm in hot junction for use, and cold junction 175mm, the Elema of length overall 580mm are as heater, and the Elema two ends are cold junction, and the centre is the hot junction.Also have two Elema frame plates of making of resistant to elevated temperatures refractory material (31) in addition, the hole of 10～12 Φ 13mm is also arranged on the Elema frame plate, corresponding one by one with the hole on the burner hearth front and back walls.When heater is installed, need burner hearth is installed in the furnace enclosure, the Elema frame plate is fixed on the furnace enclosure front and back walls window with screw, again Elema is inserted from the Elema frame plate on the furnace enclosure antetheca, run through burner hearth and pass Elema frame plate on the furnace enclosure rear wall, with Elema folder (28) aluminium pool bar (29) is clamped in the Elema two ends, last aluminium pool bar is fixed on the heating terminal plate (27) with screw; The utility model selects for use the long Elema in hot junction as heater, and intensification is stable and programming rate is fast, and general needed 15 minutes just can make furnace temperature rise to 1050 ℃ from room temperature, and temperature-controlled precision is better.The utility model is from safety in production, is separately installed with protective cover in the front and back walls of furnace enclosure, in case touch Elema and circuit thereof.

Electrothermal melting plant of the present utility model, there is a hole that crucible holder (13) is installed at the burner hearth bottom center, the crucible carriage is placed on the crucible holder top, the crucible carriage has two arm shapes or three arm shapes, every arm end has recessed of two placement crucibles, the lower end of crucible holder links to each other with coupling (15), the coupling other end is ined succession and is with the direct current generator (16) of reductor, for guaranteeing crucible holder operate as normal at high temperature, crucible holder adopts high-temperature alloy to make, the crucible carriage adopts recessed design, be beneficial to platinum crucible stable operation and be easy to place and the gripping crucible, 0～30 rev/min of crucible holder rotating speed is continuous adjustable, selects the same through-drive of direct current generator of 300W band reductor for use, can make the positive and negative both direction noiseless of crucible holder smooth rotation.

Electrothermal melting plant of the present utility model, 300W alternating current generator and coaxial reductor be equipped with in the furnace cover lifting device (1), drive the sprocket wheel chain bell that is flexible coupling by the furnace cover lifting device, control furnace cover lifting device just can be controlled bell open and close in 30 degree scopes, stable action, balanced coordination.The utility model is returned from keeping the safety in production out and has been designed chain safety guard (4).

Electrothermal melting plant of the present utility model, also designed the high-temperature furnace body wabbler mechanism: cooperate by two groups of bearing blocks (5) and rotating shaft (6), earlier bearing block is fixed on the outside framework, rotating shaft one end connecting shaft bearing, the other end is fixed on the both sides of furnace enclosure with enamel, wherein one group of rotating shaft is connected with the connecting rod that fascinates (3), the connecting rod other end that fascinates is connected with spacing overlapping wheel the (20), the swinging driving source carries the horizontal 400W alternating current generator (17) of reductor (18), body of heater waves in 0～35 degree, throw is adjustable, and the body of heater wobble frequency is 2～6 times/minute, and wobble frequency is adjustable.

Electrothermal melting plant of the present utility model, the transformer of design (21) input voltage 380V, electric current 40A, output voltage 120V, electric current 108A; Controllable silicon (22) is selected full isolation single phase ac regulation module for use, and its advantage is that the control intensification is fast especially; DC motor controller (23) is selected SK800 for use.

Electrothermal melting plant of the present utility model is equipped with switch, action button and display (25) on the guidance panel (26), utilize guidance panel, and the user can select manually retaining or automatic catch voluntarily, and dual mode all can be finished the overall process of sample fusion.If the moving retaining of player switches to manual retaining with hand/automatic change-over, regulate the manual adjustments button and operate.Control module of the present utility model (24) is different with the device of Japan, has disposed the PLC computer, and the operation interface close friend can adopt touch operation on the LCDs of display.LCDs can intuitively show each s main working parameters and intensification, heating curves, and except working condition was provided intuitively, computer system also can be reported to the police and shows fault category most common failure.The PLC computer is installed in the chamber, an outside framework left side, also can be installed on the face of chamber, an outside framework left side.

Melting plant of the present utility model has following advantage:

1, melting plant of the present utility model is simple in structure, makes easily, and is with low cost, good looking appearance.

2, bell face lining of the present utility model, bell button lining all adopt the disposable mold pressing of ceramic fibre of high-temperature flame-proof to make with burner hearth, bell face lining has flange respectively with bell button lining abutted surface, two flanges inner and outer ring each other closely cooperate, and make the stove heat preservation and insulation good especially.The ceramic fibre body of monoblock design, volatilization gas and flux destroy the etch of thermal insulator when having reduced the high-temperature fusion sample, and the long-term use of thermal insulator is not burst, and do not fall oxide layer, improve the service life of stove, reduced the labour intensity and the cost of maintenance and cleaning.

3, the utility model selects for use the Elema of the long 240mm in hot junction, total length 580mm to make heater, because the hot junction is longer, add that the furnace insulation performance is good, make the stove programming rate fast and stable, the heating-up time device of Japan generally needs 45 minutes, the longest need of this device 15 minutes have shortened the heating-up time greatly, increase work efficiency.

4, the alternating current generator of the direct current generator of the band reductor of the utility model outfit and band reductor is same through-drive, solved adopt between the motor and reductor in the Japanese device two and sprocket wheel together link the problem of the rotary speed unstabilization that causes, make the crucible holder stability of rotation, the body of heater wobble frequency is stable, bell open and close stable action, balanced coordination, noiseless.

5, the utility model has been discarded old-fashioned relay control model, adopted PLC computer control pattern, make that operation is easier, accuracy is better, especially having outstanding performance aspect the body of heater intensification temperature-controlled precision, stopped relay control fully and easily made furnace temperature fling 1300 ℃, the phenomenon that causes burner hearth to damage even burn platinum crucible.

6, the utility model adopts the PLC computer control, and LCD intuitively shows each s main working parameters and intensification and heating curves.The operation interface close friend can provide multiple mode of operation.Only need when the user uses to access corresponding work mode and parameter according to sample type from computer, can operate efficiently and easily, operating efficiency is high.Computer system also has reports to the police and shows fault category, the function of in time fixing a breakdown most common failure, has also prolonged the service life of stove.

Description of drawings

Fig. 1 is the utility model melting plant contour structures schematic side view.

Fig. 2 is the utility model melting plant contour structures front-view schematic diagram.

Fig. 3 be the utility model melting plant Figure 1A-A to cross-sectional view, (1) is the furnace cover lifting device among the figure, (2) be sprocket wheel, (3) be the connecting rod that fascinates, (4) be the chain safety guard, (5) be bearing block, (6) be rotating shaft, (7) be connector, (8) be bell, (9) be bell button lining, (10) be bell face lining, (11) be burner hearth, (12) be furnace enclosure, (13) be crucible holder, (14) be heater, (15) be coupling, (16) be direct current generator, (17) be alternating current generator, (18) be reductor, (19) be journey controller, (20) be spacing overlapping the wheel, (21) be transformer, (22) be controllable silicon, (23) be DC motor controller, (24) be control module, (25) be display.

Fig. 4: for the utility model melting plant Fig. 2 B-B to cross-sectional view, among the figure (27) for heating terminal plate, (28) for Elema folder, (29) for aluminium is moored bar, (30) are that outside framework, (31) they are the Elema frame plate.

Fig. 5 is the utility model melting plant bell face lining cross-sectional view.

Fig. 6 is the utility model melting plant bell button lining cross-sectional view.

Fig. 7 is the utility model melting plant chamber structure generalized section.

Fig. 8 is chamber, a utility model melting plant outside framework left side upper surface schematic top plan view, and (25) are that display, (26) are guidance panel among the figure.

The specific embodiment

The utility model melting plant is described in further detail in conjunction with the embodiments:

Embodiment 1: the utility model melting plant of making, the contour structures of device such as Fig. 1.

1. the outside framework of producing device (30), size: 1540 * 960 * 1040mm makes outside framework with angle steel, two Room about outside framework divides as seen from Figure 4.Also will make the thick china of outside framework, wherein outside framework left side chamber front panel and side panel are the gate-type thick china.Make the panel of outside framework right ventricle in addition of aluminium sheet.

2. make the body of heater metal parts, as Fig. 3.Process bell (8) capping and furnace enclosure (12) with corrosion resistant plate.Bell: one of corrosion resistant plate of intercepting Φ 490mm circle is made the bell face, one of intercepting 137 * 1470mm high temperature resistant alloy aluminum, two ends are welded into the height that cylinder is made bell, intercept external diameter 490mm again, work of internal diameter 370mm annulus covers at the end, with the tapping long spiro nail three is fixed into a complete bell.Furnace enclosure: with the casing of stainless steel processing 500 * 500 * 216mm, with case face center is the big round mouth that the center of circle cuts out a diameter 370mm, open the window of a 304 * 83mm in the front and back walls symmetry of case, a Φ 35mm hole is dug at the center at the bottom of case, also have the hole of an installation thermocouple at the case rear wall, this stainless casing is exactly a furnace enclosure; The utility model is for making bell and furnace enclosure more solid, adds one deck corrosion resistant plate respectively again according to the thickness of corrosion resistant plate on the bell face, adds one deck steel plate in the furnace enclosure bottom surface.For easy to use, a handle also is installed, on the bell so that when outage, manually open and close bell.Also make a chain safety guard (4) and two protective covers that are used to be installed on forward and backward two walls of furnace enclosure simultaneously with steel mesh.

3. adopt the respectively disposable mold pressing of ceramic fibre of high-temperature flame-proof to make bell face lining (10), bell button lining (9) and burner hearth (11).Bell face lining structure such as Fig. 5, bell face lining external diameter 415mm, the 255mm of the minimum place of internal diameter, the height that contains flange is 125mm, the wide 20mm of flange, high 10mm, flange internal diameter 324mm, external diameter 364mm; Bell button lining structure such as Fig. 6, outside dimension: 415 * 415mm, the height that contains flange is 38mm, the 255mm of the minimum place of internal diameter, flange is arranged, the wide 29mm of flange, high 9mm, flange outside diameter 324mm with bell face lining abutted surface, internal diameter 265mm, bell face lining constitutes two annulus that inside and outside closely cover cooperates with two flanges of bell button lining; Chamber structure such as Fig. 7, outside dimension: 494 * 415 * 178mm, interior empty 255 * 255 * 80mm, there is a hole Φ 35mm that crucible holder is installed in the bottom centre of burner hearth, there are 12 Φ 13mm that the hole of Elema is installed on the front and back walls of burner hearth, divide two misarrangement positions to arrange, pitch of holes 25mm, row's spacing 26mm; Also to make two 420 * 128mm Elema frame plates, 12 holes are also arranged on the Elema frame plate with resistant to elevated temperatures refractory material, corresponding one by one with hole on the burner hearth front and back walls.

4. the burner hearth furnace enclosure of packing into, burner hearth bottom surface and both sides are solid with the high-temperature ceramic fibre tampon, and bell button lining is arranged on the burner hearth.The bell face is served as a contrast the bell of packing into, also use the high-temperature ceramic fibre tampon solid all around.

5. two Elema frame plates are separately fixed at the front and back walls of furnace enclosure with screw, the antetheca of the Elema of 12 Φ 12mm, the long 240mm in hot junction, total length 580mm the past Elema frame plate, burner hearth is run through burner hearth, pass burner hearth rear wall, back Elema frame plate, aluminium pool bar (29) is placed on the Elema two ends, with Elema folder (28) aluminium pool bar is clamped on the Elema, and aluminium pool bar is fixed on the heating terminal plate (27).

6. make the mechanical part relevant with stove: employing high-temperature alloy making crucible holder (13), the crucible pallet can be placed in the crucible holder top, and two arms or three arm shapes are arranged, and the end of every arm has recessed of two placement crucible pallets.The lower end of crucible holder is placed in the centre bore of burner hearth bottom and passes furnace enclosure and link to each other the direct current generator (16) of another termination of coupling 300W band reductor with coupling (15).

7. use enamel that rotating shaft (6) is fixed on the furnace enclosure both sides, bearing block (5) is installed on the outside framework (30); Connect bell and furnace enclosure with connector (7); Furnace cover lifting device (1), sprocket wheel (2) and chain are installed, bell and sprocket wheel and chain are flexible coupling, owing to be equipped with 300W alternating current generator and coaxial reductor in the furnace cover lifting device, control furnace cover lifting device just can control bell in 30 degree scopes steadily, the coordination open and close.

8. connecting rod (3) one ends that will fascinate are connected with rotating shaft, the rotating shaft bearing block of ining succession, the connecting rod other end that fascinates is connected with spacing overlapping wheel the (20) with journey controller (19), spacing overlapping horizontal 400W alternating current generator of taking turns connection as the band reductor in swinging driving source, body of heater can be waved in 0～35 degree, the body of heater wobble frequency is 2～6 rev/mins, and throw and wobble frequency are all adjustable.

9. transformer (21), controllable silicon (22), DC motor controller (23) and control module (24) are installed in the left chamber of outside framework, as Fig. 3.The input voltage 380V of transformer, electric current 40A, output voltage 120V, electric current 108A; Controllable silicon is selected full isolation single phase ac regulation module for use, and DC motor controller is selected SK800 for use, the PLC computer that control module selects for use MIT to produce.

10. display and guidance panel are installed: be installed on the left chamber face of outside framework, as Fig. 8.Display selects industrial LCD, and display has a protective cover outward.The button that is provided with on the guidance panel from left to right, from front to back, be respectively hand/automatic change-over, general supply starting switch, the change-over switch that fascinates/stop, reset switch, single time/pair of revolution change switch, revolution adjusting knob, bell and open that button, bell close button, bell stops button and insulation mode button etc.Circuit connection between each parts is also confirmed one by one.

The last panel of making outside framework of aluminium sheet of installing in the outside framework right ventricle installs chain safety guard (4) again.The outer pasting board of device is all installed.The electrothermal melting plant that the utility model x-ray fluorescence analysis sample is used has just completed.

Embodiment 2: the melting plant that test the utility model embodiment 1 makes, and the key technical indexes:

Supply voltage: 380V/220V power: 13KW

The molten sample quantity of output maximum current: 85A: 1～6

Body of heater pivot angle: 0～35 degree body of heater wobble frequency: 2～6 rev/mins

Tray supporter rotating speed: 0～30 rev/min of body of heater dead time: 1～30 second

Temperature range: room temperature～1250 ℃ temperature-controlled precision: ± 1.0 ℃

Programming rate:＞50 ℃/minute, be raised to 1050 ℃ from 550 ℃, reach in 10 minutes;

Embodiment 3: the electrothermal melting plant that the x-ray fluorescence analysis sample of the utility model embodiment 1 making is used is used for molten iron ore powdery sample.Operating procedure:

1, the voltage 380V that connects with the mains.Start is sent: start the general supply air switch respectively, start the microcomputer air switch, start the ac motor air switch, start the direct current generator air switch, start Elema and add hot air switch and radiator-grid fan switch.

2,6 iron ore powdery samples for the treatment of fusion are placed in the crucible, open bell, crucible is placed on recessed of crucible holder arm end, close bell.

Start the microcomputer air switch after 1 minute, liquid crystal display can show three width of cloth pictures:

First width of cloth picture can show 17 running parameters such as furnace temperature detection and body of heater state; Second width of cloth picture can dynamically show the change curve of heating-up temperature and heating current.The 3rd width of cloth picture can show mode of operation.Only need the finger touch display screen during use, can carry out the switching of above-mentioned three width of cloth pictures quickly and easily.Have on first picture: furnace temperature detection, body of heater state, quiescent time, furnace temperature setting, bell state, dead time, heating current, work are touched formula, are waved the time, heating voltage, automatic/hand, rocking-turn time, speed of gyration, fascinate/stop, 17 running parameters such as electric current restriction, proportionality coefficient and integral coefficient.Select automatic transmission: on first picture, finish required whole parameters are set.1. design temperature: room temperature～1050 ℃; 2. programming rate adopts the percentage of regulating the transformer current restriction to realize that recently optimal pressure swing device utilization rate is limited in 60%, sets the 85A electric current, voltage 75V; 3. the speed of gyration of platinum crucible support is set 10 rev/mins in the stove, rotating control; 4. set mode of operation: press the needs of fusing sample, set the running time of four kinds of mode of operations, that is: quiescent time was at 4 minutes; Dead time is in 2 seconds; The time of fascinating was at 2 minutes; The rocking-turn time was at 14 minutes.Above running parameter is all adjusted to finish and is put in place, switches to enter by the finger touch display screen again to show heating-up temperature and electric current heating temperature curve picture; By starting button, beginning is heated automatically, when heating-up temperature reaches design temperature, pick up counting, and turn round by the time that the work formula of touching is set, the time to be set is when arriving, alarm promptly sends sound, and the operator can uncap and take out platinum crucible one by one after removing the alarm sound by reset button.The iron ore sample of fusion satisfies the requirement that is used to carry out x-ray fluorescence analysis.Aborning during the identical batch sample of fusion, select automatic mode for use, the crucible that the user only needs to have sample is put into stove, again by behind " startup " button, computer just can be finished the operation of molten sample overall process automatically according to the mode of operation that the user selects for use, after sample fusion was all finished, melting furnace can send " song " and remind the operator to take out the good sample of fusion.

Embodiment 4: the electrothermal melting plant that the x-ray fluorescence analysis sample of the utility model embodiment 1 making is used is used for tekite lime stone powdery sample.Select the operator flowing mode: hand/automatic change-over is switched to manual retaining, regulate manual power adjusting button, 1. design temperature is 1050 ℃; 2. setting voltage 75V, electric current 85A; 3. set the body of heater rocking-turn time at 8 minutes, other parameters are with embodiment 3; 4. set mode of operation; Press start key again, after sample fusion was all finished, melting furnace can send " song " operator and take out the good sample of fusion.

Embodiment 5: use melting plant points for attention of the present utility model:

1. this machine earth connection must be good.

2. the Elema chuck is essential clamps, and the discharge spark phenomenon can not be arranged.

3. start button by staggering the time as misoperation, can stop by reset button.If melting furnace is reported to the police in work way, also should press reset key immediately, wait to remove the fault that demonstrates on the display screen after, start once more.

When 4. opening the melting furnace bell, burner hearth can not switch on the heating; Only remain body of heater when being in the normal position and shutting bell, the melting furnace heating of just can switching on.

5. for prolonging furnace life, when not melting sample, furnace temperature can be reduced to 550 ℃ of insulations, make melting furnace be in holding state.

6. after the overall process of fusion sample is finished, must treat that body of heater gets back to the body of heater center position, body of heater and crucible holder shut down automatically, when burner hearth stops to heat automatically, could open bell.

7. body of heater mechanical movement position must intermittent oiling grease lubrication.

Melting plant of the present utility model can satisfy well to be produced and all kinds of laboratory is used to carry out the requirement of x-ray fluorescence analysis to samples such as fusion ore and raw material, manipulate very efficient and convenient, long service life, operating efficiency is high.

Claims (2)

1, the electrothermal melting plant that a kind of x-ray fluorescence analysis sample is used, by furnace cover lifting device (1), sprocket wheel (2), connecting rod (3) fascinates, chain safety guard (4), bearing block (5), rotating shaft (6), connector (7), bell (8), burner hearth (11), furnace enclosure (12), crucible holder (13), heater (14), coupling (15), direct current generator (16), alternating current generator (17), reductor (18), journey controller (19), spacing overlapping wheel the (20), transformer (21), controllable silicon (22), DC motor controller (23), control module (24), guidance panel (26), outside framework (30) and outer pasting board are formed, it is characterized in that having in the bell (8) bell face lining (10), between bell face lining and the burner hearth (11) bell button lining (9) is arranged, bell face lining, bell button lining is respectively the ceramic fibre thermal insulator of an integral body with burner hearth, burner hearth is in furnace enclosure (12) lining, the burner hearth rear wall is equipped with thermocouple, the burner hearth center is equipped with crucible holder (13), the crucible carriage is placed on the crucible holder top, the crucible carriage has two arm shapes or three arm shapes, every arm end has recessed of two placement crucibles, the lower end of crucible holder links to each other with coupling (15), and the coupling other end is ined succession and is with the direct current generator (16) of reductor; The front and back walls symmetry of furnace enclosure has a window, an Elema frame plate (31) respectively is installed on the window, the heater (14) that the long Elema system of 10～12 580mm is arranged, Elema frame plate from the furnace enclosure antetheca inserts, run through the burner hearth front and back walls and pass Elema frame plate on the furnace enclosure rear wall, Elema folder (28) is clamped in the Elema termination to aluminium pool bar (29), and aluminium pool bar also is fixed on the heating terminal plate (27) with screw; Furnace cover lifting device (1) connection chain band movable sprocket (2), the chain other end is connected with bell, and connector (7) connects bell and furnace enclosure; There are two groups of bearing blocks (5) to be fixed on the outside framework (30), rotating shaft (6) one end connecting shaft bearings, the other end is fixed on the both sides of furnace enclosure with enamel, wherein one group of rotating shaft is connected with the connecting rod that fascinates (3), and the connecting rod that fascinates connects spacing overlapping wheel the (20), journey controller (19), reductor (18) and alternating current generator (17); Alternating current generator (17) with its with reductor (18), direct current generator (16) and with reductor be coaxial the connection; Configuration PLC computer is made control module (24), and transformer (21), controllable silicon (22), DC motor controller (23), PLC computer, display (25) and guidance panel (26) are installed the left chamber at outside framework concentratedly.

2, electrothermal melting plant according to claim 1, it is characterized in that described bell face lining, bell button lining are respectively the ceramic fibre thermal insulator of an integral body with burner hearth, bell face lining is the circular cavity that a bottom surface is arranged, bell button lining square-outside and round-inside, internal diameter is identical with bell face lining internal diameter, and bell button lining has flange respectively with bell face lining abutted surface, and two flanges inner and outer ring each other closely cooperate, the burner hearth profile is a rectangle, and interior sky is a square.

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