CN217981308U - Multi-station full-automatic electric melting type sample preparation device - Google Patents
Multi-station full-automatic electric melting type sample preparation device Download PDFInfo
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- CN217981308U CN217981308U CN202221573286.9U CN202221573286U CN217981308U CN 217981308 U CN217981308 U CN 217981308U CN 202221573286 U CN202221573286 U CN 202221573286U CN 217981308 U CN217981308 U CN 217981308U
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Abstract
The utility model relates to a multi-station full-automatic electric melting type melting sample preparation device, a plurality of formers are arranged on a former heating table at intervals, a plurality of hot melting stations are arranged on a bottom plate of a rotating arm at intervals, and the hot melting stations are in one-to-one correspondence with the formers and are aligned front and back; each hot melting station is mutually independent, namely each hot melting station comprises a platinum crucible, a crucible support frame, a rotating motor and an electromagnetic induction heating coil, the crucible support frame is arranged on a motor shaft of the rotating motor, the platinum crucible is arranged in a crucible frame of the crucible support frame, and the electromagnetic induction heating coil is arranged on the periphery of the crucible frame; the controller is internally provided with a plurality of mutually independent branch controllers, each hot melting station and the corresponding former are respectively connected with different branch controllers, and the hot melting conditions such as the hot melting temperature, the hot melting time, the rotating speed and the like of each hot melting station can be respectively controlled, so that the controller is particularly suitable for high-flux detection scenes of batch operation.
Description
Technical Field
The utility model relates to an X ray fluorescence spectrum detection area especially relates to the device of many full-automatic electric melting formula melting system appearance of station.
Background
The sample to be detected needs to be prepared in the X-ray fluorescence spectrum detection process, wherein the tabletting sample preparation and the melting sample preparation are two common and important sample preparation modes, and the melting sample preparation can better mix the sample, namely, the sample is fully melted by adopting high temperature and is uniformly mixed to prepare a detection glass sheet for preparing on-machine test. At present, electric melting type melting sampling machines and propane gas melting sampling machines are commonly used in actual work, but the two types of equipment have problems in actual work:
the electric melting type melting sampling machine has the following problems: firstly, the sample melting heating of the existing electric melting type melting sampling machine depends on a ceramic heating light pipe, and the sample cannot be uniformly distributed in a platinum crucible, so that the sample piece with nonuniform heating of the crucible has cracks, even the platinum crucible has the phenomenon of melting cracking, the economic loss is caused, and the working efficiency is influenced; secondly, the heating mechanism of the existing electric melting type melting sampling machine is a ceramic heating light pipe element which is fragile, easy to break and high in replacement cost; thirdly, the existing electric melting type melting sample making machine is limited by the factors such as the manufacturing process of the ceramic heating light tube, the manufacturing cost and the like, and the length of the electric melting type melting sample making machine is relatively short, so that the single-time sample melting quantity is limited, the expansibility is poor, and the single-time sample melting efficiency is low; fourthly, the sample preparation failure probability is high due to the first three reasons, and after the sample is melted in each crucible once, the crucible needs to be soaked and pickled for at least twenty minutes, then washed and dried, so that the sample preparation success rate seriously influences the working efficiency.
Patent number discloses an electric smelting formula melting sampling machine in for CN 210243331U file, the glass piece that uses the mode preparation X ray fluorescence spectrum of induction coil hot melt to detect, melt the appearance through setting up high frequency and melt appearance portion, set up high frequency induction coil at the crucible periphery, the sample directly becomes the piece after melting in the crucible, the rotatory step motor of crucible is rotatory even, can be with the even system appearance of sample, thereby the crucible sways step motor and drives crucible support and drive crucible portion and sway, make the more even of system appearance process. The set infrared thermometer is used for detecting the temperature and providing temperature parameters for the set controller in real time. The controller that sets up adopts PLC to make the interference killing feature of the control process of whole device can improve, the control process is more accurate. Among the drawbacks that exist are: firstly, sample preparation is directly performed in a crucible, the depth of the crucible enables a glass sheet to be easily damaged when the glass sheet is taken out, and meanwhile, the treatment of the crucible also affects the success rate of sample preparation; secondly, coils on the periphery of each crucible are connected together, namely the temperatures of different crucibles are consistent, the melting points of samples melted each time are required to be close, and because different samples require different heating times according to standards, a large number of different samples are usually continuously received in actual water flowing operation; thirdly, the infrared thermometer is placed outside the box body and far away from the melted sample, so that the real temperature of the melted sample cannot be accurately reflected.
The propane gas melting sampling machine has the following problems: firstly, propane or other gases are used as heating raw materials in the existing propane gas melting sampling machine, and the gases have potential safety risks such as explosion, gas leakage and the like; secondly, the existing propane gas melting sampling machine consumes a large amount of gas after being continuously used for a long time, so that ventilation needs to be interrupted frequently in the actual working process, time and labor are wasted, the efficiency is low, the gas consumption is large, and the material consumption cost is high; thirdly, the improper operation of the existing propane gas melting sampling machine can cause the melting sample to fall over the gas ignition furnace eye to block the furnace eye.
SUMMERY OF THE UTILITY MODEL
For above-mentioned practical problem and not enough among the solution background art, the utility model provides a device of multistation full-automatic electric melting formula melting system appearance, every hot melt station has independent induction coil and thermocouple, there is independent control system, the hot melt temperature of every hot melt station, hot melt conditions such as hot melt time and slew velocity can all be controlled respectively, can realize the customization operation, can be according to the sample melting time that different sample standards required, it is long when setting for different heating curve and heating, the sample melting demand of the different samples of batch processing of being convenient for greatly improves work efficiency, consequently the utility model discloses the high flux that is particularly suitable for batch operation detects the scene.
The technical scheme of the utility model is that: a multi-station full-automatic electric melting type melting sample preparation device comprises a rotating arm, a former heating table, a former, a hot melting station, supporting plates, a controller and a base, wherein the two supporting plates are respectively arranged at two ends of one side of the base; the plurality of formers are arranged on the former heating table at intervals, the plurality of hot melting stations are arranged on the bottom plate of the rotating arm at intervals, the hot melting stations correspond to the formers one by one and are aligned front and back, and when the melt in the platinum crucible is poured out when the rotating arm inclines, the melt just falls into the formers; the controller is connected with the control circuit, the controller is arranged on the front side of the base and is controlled by a button operation on an operation panel of the controller, the rotating arm is connected with the control circuit, each hot melting station is mutually independent, namely each hot melting station comprises a platinum crucible, a crucible support frame, a rotating motor and an electromagnetic induction heating coil, the crucible support frame is arranged on a motor shaft of the rotating motor, the platinum crucible is arranged in a crucible frame of the crucible support frame, and the electromagnetic induction heating coil is arranged on the periphery of the crucible frame and is not in contact with the crucible frame; a plurality of groups of mutually independent branch controllers are built in the controller, the control circuit comprises a plurality of branch control circuits, and each hot melting station and the corresponding former are respectively connected with the independent branch control circuits; each branch control circuit is connected with a corresponding branch controller.
In the technical scheme, the crucible supporting frame is made of nickel-based high-temperature alloy which is high-temperature resistant and elastic, the upper part of the crucible supporting frame is a U-shaped crucible frame, the lower part of the crucible supporting frame is a supporting rod, clamps are symmetrically arranged in the upper part of the crucible frame, and the inner surfaces of the clamps and the clamping grooves in the clamps are circular arcs concentric with the platinum crucible; the crucible clamping table is arranged on the upper portion of the outer wall of the platinum crucible, the height of the crucible clamping table is consistent with that of the clamping clip, and the appearance of the crucible clamping table is matched with the inner shape of the clamping groove.
In the above technical solution, the number of the hot-melting stations is six, that is: six rotating motors are arranged on a bottom plate of the rotating arm at intervals, six formers are arranged on a former heating table at intervals, correspondingly, six platinum crucibles, six crucible supporting frames and six electromagnetic induction heating coils are arranged, and six groups of branch controllers are arranged in the controller.
In the technical scheme, a thermocouple is arranged in the crucible support frame, a probe of the thermocouple is close to the bottom end of the crucible support frame, and the thermocouple is connected with a control circuit.
In the above technical solution, a PID operator is built in each branch control circuit.
The utility model has the advantages that: the utility model discloses every hot melt station has independent induction coil and thermocouple, has independent control system, therefore hot melt conditions such as hot melt temperature, hot melt time and slew velocity of every hot melt station can all be controlled respectively, can realize the customization operation, can set for different heating curves and length of heating according to the sample melting time that different sample standards required, be convenient for batch processing the sample melting demand of different samples, greatly improve work efficiency, consequently the utility model discloses the high flux that is particularly suitable for batch operation detects the scene; a thermocouple is used as a temperature measuring device and is placed at the bottom of a platinum crucible close to a molten sample, so that the temperature of the molten sample can be monitored in real time; the PID arithmetic unit is arranged, so that a PID algorithm feedback mechanism is added in the temperature measurement link, closed-loop control is formed, and the heating temperature can be stabilized within a certain range by adjusting the current of the electromagnetic induction coil; the mode of firstly melting the sample in the crucible and then utilizing the sheet in the former is adopted, thereby not only ensuring the success rate of the glass sheet, but also reducing the influence of the crucible on sample preparation. The crucible is tightly clamped in the clamping groove by the clamping clamp, so that the molten liquid can be poured out accurately.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a schematic view of the control panel buttons of the controller;
fig. 5 is a branch control circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, 2 and 3, the multi-station full-automatic electric melting type melting sample preparation device comprises a rotating arm 1, a former heating table 2, a former 3, a hot melting station 4, supporting plates 5, a controller 6, a base 7 and a control circuit, wherein the two supporting plates 5 are vertically fixed on two sides of one end of the base 7 in a screw connection mode, the rotating arm 1 is a rectangular frame with an opening at the upper end, and side plates 1-2 on two sides of the rotating arm 1 are fixed on rotating shafts 5-1 of the two supporting plates 5; six rotating motors 4-3 are arranged at intervals and fixed on a bottom plate 1-1 of the rotating arm 1, and are aligned with the six formers 3 in a front-back manner and correspond to the formers one by one; determining the position of the heating platform 2 of the former according to the height of the supporting rod 4-2-3, ensuring that the melt in the platinum crucible 4-1 is just poured into the former 3 when the rotating arm 1 inclines, and fixing the heating platform 2 of the former at the other end of the base 7 in a threaded connection mode; six formers 3 are fixed on the former heating table 2 at intervals.
The crucible support frame 4-2 is made of nickel-based high-temperature alloy with the mark GH3030, the upper part is a crucible frame 4-2-2, the lower part is a support rod 4-2-3, the crucible frame 4-2-2 is a U-shaped frame, and the width and the height of the crucible frame 4-2-2 are equal to the maximum width and the height of the platinum crucible 4-1; the electromagnetic induction heating coil 4-4 is sleeved on the periphery of the crucible holder 4-2-2 and is not in contact with the crucible holder 4-2-2, so that when the rotary motor 4-3 drives the crucible holder 4-2-2 to rotate, the electromagnetic induction heating coil 4-4 does not rotate along with the platinum crucible.
The platinum crucible 4-1 is processed in a mould mode, a crucible clamping table 4-1-1 is manufactured on the upper portion of the outer wall of the platinum crucible 4-1, clamps 4-2-1 with the height consistent with that of the crucible clamping table 4-1-1 are symmetrically manufactured above a crucible frame 4-2-2, the inner surface 4-2-4 of the clamp 4-2-1 is milled into an arc concentric with the platinum crucible 4-1, an arc-shaped clamping groove 4-2-5 concentric with the platinum crucible 4-1 is milled in the clamp 4-2-1, the shape of the crucible clamping table 4-1-1 is matched with the shape of the inner part of the clamping groove 4-2-5, and the clamp 4-2-1 can clamp and fix the platinum crucible 4-1. The clamp with the structure can conveniently take and place the platinum crucible 4-1 of the controller, and can firmly and reliably ensure that the platinum crucible 4-1 of the controller cannot fall off during rotation.
The support rods 4-2-3 of the six crucible support frames 4-2 are respectively connected with a motor shaft of a rotating motor 4-3 through a coupling, the six platinum crucibles 4-1 are respectively clamped in the crucible frames 4-2-2 at the upper ends of the crucible support frames 4-2, the inner surfaces 4-2-4 of the clamps 4-2-1 are tightly attached to the outer surfaces of the platinum crucibles 4-1, and the crucible clamping platforms 4-1-1 are clamped in the clamping grooves 4-2-5 of the clamps 4-2-1.
A thermocouple 4-5 is placed in a hard leather tube, a probe of the thermocouple 4-5 is close to the bottom end of a crucible frame 4-2-2 and used for monitoring the real-time temperature of the bottom of a platinum crucible 4-1, and a lead end penetrates through a bottom plate 1-1 of a rotating arm and is connected with a controller circuit.
The control circuit comprises six branch control circuits which are arranged in the base 7, the controller 6 comprises six sets of branch controllers 6-1 which are arranged on the front surface of the base 7, and each set of branch controller 6-1 is respectively connected with the corresponding branch control circuit and is operated and controlled by a controller control panel button; the rotating motor 4-3, the driving motor of the rotating arm 1 and the former heating table 2 are all controlled by a power module of a controller circuit, a lead of the electromagnetic induction heating coil 4-4 penetrates through a bottom plate 1-1 of the rotating arm to be connected with a signal output module of the controller circuit through a high-frequency power supply, and a lead end of the thermocouple 4-5 penetrates through the bottom plate 1-1 of the rotating arm to be connected with a signal conditioning module of the controller circuit.
The core of the controller 6 is a Microcontroller (MCU), and a control program written by adopting an embedded C language is solidified and stored in the microcontroller.
As shown in figures 4 and 5, a control circuit is operated through six control buttons on a control panel of a controller 6, a PID operator is arranged in each group of branch control circuits, a signal conditioning module transmits a temperature signal of a thermocouple 4-5 to a microcontroller, when the microcontroller receives the temperature signal transmitted by the signal conditioning module, closed-loop control is formed by combining a PID algorithm, a signal output module outputs a control signal conditioned by PID operation to a high-frequency power supply, and the output power of an electromagnetic induction heating coil 4-4 is adjusted and controlled, so that the temperature of the bottom of a platinum crucible 4-1 is relatively stabilized within a certain range, and the quality of a molten sample is ensured.
When in use, the method comprises the following steps:
the first step is as follows: filling a sample-melting reagent and sample powder into a platinum crucible 4-1, fully mixing, simultaneously stretching clamping clips 4-2-1 at two sides of a crucible frame 4-2-2 outwards, placing the platinum crucible 4-1 in the crucible frame 4-2-2, simultaneously loosening the clamping clips 4-2-1 at two sides of the crucible frame 4-2-2, retracting the clamping clips 4-2-1 by utilizing the elasticity of the clamping clips 4-2-1, enabling the inner surface 4-2-4 of the clamping clips 4-2-1 to be tightly attached to the outer surface of the platinum crucible 4-1, clamping a crucible clamping table 4-1-1 in a clamping groove 4-2-5 of the clamping clips 4-2-1, and clamping grooves 4-2-5 and the inner surface 4-2-4 of the clamping clips 4-2-1 are circular arcs concentric with the platinum crucible 4-1, and clamping clips 4-2-1 clamp the platinum crucible 4-1 in a crucible supporting frame 4-2;
the second step is that: switching on a power supply of the device, wherein sample melting time and temperature of different mineral samples are different, and each branch controller 6-1 can be operated on a control panel of a controller 6 according to requirements, heating temperature of each hot melting station 4 is set in a temperature control area, heating time of each hot melting station 4 is set in a time control area, and after the setting is finished, starting is carried out by pressing a starting button program; the microcontroller indicates the power module to drive the rotating motor 4-3 to drive the platinum crucible to rotate at the speed of 30r/min, and the next step is carried out after 5 s;
the third step: the microcontroller indicates a power module to drive a rotating arm 1 to incline, the rotating arm 1 drives a platinum crucible 4-1, a crucible support frame 4-2, a rotating motor 4-3 and an electromagnetic induction heating coil 4-4 to slowly incline by 30 degrees, meanwhile, the electromagnetic induction heating coil 4-4 is electrified to work, 75% of power is output, the platinum crucible 4-1 is heated, at the moment, a sample and a sample melting agent in the platinum crucible 4-1 are mixed and melted under the action of rotation, after the heating work is carried out for 60s, the real-time temperature is basically consistent with the set heating temperature, and the next step is carried out;
the fourth step: continuously heating by an electromagnetic induction heating coil 4-4, outputting 100% power, and controlling heating for 30min by the heating time displayed in the time control area of the control panel; meanwhile, at the interval of 2min, the included angle between the support plate 5 and the rotating arm 1 is slowly changed from 30 degrees to 45 degrees until the sample is completely melted into a liquid state;
the fifth step: when the heating time of the fourth step is 2min, the microcontroller indicates the power module to drive the start-up former heating table 2 to start heating the former 3 placed on the start-up former heating table, so that the temperature of the former 3 is consistent with the temperature of the platinum crucible 4-1;
in the heating process, the thermocouple 4-5 senses a temperature signal of the platinum crucible 4-1, a signal conditioning module of the control circuit transmits the temperature signal of the thermocouple 4-5 to the microcontroller, when the microcontroller receives the temperature signal transmitted by the signal conditioning module, closed-loop control is formed by combining a PID algorithm, a signal output module outputs a control signal conditioned by PID operation to a high-frequency power supply, and the output power of the electromagnetic induction heating coil 4-4 is regulated and controlled;
and a sixth step: after the fourth step is finished, stopping rotating the rotating motor 4-3, lifting the rotating arm 1 upwards, pouring the liquid molten sample in the platinum crucible 4-1 into the former 3, and stopping heating the electromagnetic induction heating coil 4-4; the heating table 2 of the former stops heating and waits for the solidification and cooling of the molten sample in the former 3;
the seventh step: and after the melting and sample preparation are finished, taking out the sample wafer in the former 3 for X-ray fluorescence spectrum detection, and shutting down the machine.
Different mineral sample melting time is different, and different long program modes can be set according to requirements.
More stations can be arranged according to the requirement, and the device is more suitable for batch testing.
In the method, the related microcontroller adopts an STM32F407ZET6 series single chip microcomputer with 32-bit 144 pins, a control program is written by C language, and a control panel uses an SPI communication protocol.
Claims (5)
1. A multi-station full-automatic electrofusion type melting sample preparation device comprises a rotating arm (1), a former heating table (2), a former (3), a hot melting station (4), supporting plates (5), a controller (6), a base (7) and a control circuit, wherein the two supporting plates (5) are respectively arranged at two ends of one side of the base (7), side plates (1-2) at two sides of the rotating arm (1) are arranged on a rotating shaft (5-1) of the supporting plates (5), and the former heating table (2) is arranged at the other side of the base (7) and is parallel to the rotating arm (1) side by side; the plurality of formers (3) are arranged on the former heating table (2) at intervals, the plurality of hot melting stations (4) are arranged on a bottom plate (1-1) of the rotating arm (1) at intervals, the hot melting stations (4) correspond to the formers (3) one by one and are aligned front and back, and when the rotating arm (1) inclines and melts in the platinum crucible (4-1) are poured out, the melts just pour into the formers (3); controller (6) are connected with control circuit, and controller (6) set up at base (7) base openly, through the button operation control on controller (6) operating panel, rotor arm (1) is connected with control circuit, its characterized in that: each hot melting station (4) is mutually independent, namely each hot melting station (4) comprises a platinum crucible (4-1), a crucible support frame (4-2), a rotating motor (4-3) and an electromagnetic induction heating coil (4-4), the crucible support frame (4-2) is arranged on a motor shaft of the rotating motor (4-3), the platinum crucible (4-1) is arranged in the crucible frame (4-2-2) of the crucible support frame (4-2), and the electromagnetic induction heating coil (4-4) is arranged at the periphery of the crucible frame (4-2-2) and is not in contact with each other; a plurality of groups of mutually independent branch controllers (6-1) are arranged in the controller (6), the control circuit comprises a plurality of branch control circuits, and each hot melting station (4) and the corresponding former (3) are respectively connected with the independent branch control circuits; each branch control circuit is connected to a corresponding branch controller (6-1).
2. The multi-station full-automatic electro-fusion type melting sample preparation device as claimed in claim 1, wherein: the crucible support frame (4-2) is made of a high-temperature-resistant elastic nickel-based high-temperature alloy, the upper part of the crucible support frame (4-2) is a U-shaped crucible frame (4-2-2), the lower part of the crucible support frame is a support rod (4-2-3), clamps (4-2-1) are symmetrically arranged inside the crucible frame (4-2-2), and the inner surface (4-2-4) and the inner clamping grooves (4-2-5) of the clamps (4-2-1) are circular arcs concentric with the platinum crucible (4-1); the crucible clamping table (4-1-1) is arranged on the upper portion of the outer wall of the platinum crucible (4-1), the height of the crucible clamping table (4-1-1) is consistent with that of the clamp (4-2-1), and the shape of the crucible clamping table (4-1-1) is matched with that of the inner portion of the clamping groove (4-2-5).
3. The multi-station full-automatic electro-fusion type melting sample preparation device as claimed in claim 1, wherein: the hot melting station (4) has six stations, namely: six rotating motors (4-3) are arranged on a bottom plate (1-1) of the rotating arm (1) at intervals, six formers (3) are arranged on a former heating table (2) at intervals, correspondingly, the number of the platinum crucibles (4-1), the number of the crucible supporting frames (4-2) and the number of the electromagnetic induction heating coils (4-4) are six, and six groups of branch controllers (6-1) are arranged in the controller (6).
4. The multi-station full-automatic electric melting type melting sample preparation device as claimed in claim 1, characterized in that: a thermocouple (4-5) is arranged in the crucible support frame (4-2), a probe of the thermocouple (4-5) is close to the bottom end of the crucible support frame (4-2-2), and the thermocouple (4-5) is connected with a control circuit.
5. The multi-station full-automatic electric melting type melting sample preparation device as claimed in claim 1, characterized in that: and a PID operator is arranged in each branch control circuit.
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| CN202221573286.9U CN217981308U (en) | 2022-06-23 | 2022-06-23 | Multi-station full-automatic electric melting type sample preparation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203056A (en) * | 2023-05-05 | 2023-06-02 | 中国检验认证集团河北有限公司黄骅港分公司 | Flatness detection method of fuse piece for X-ray fluorescence spectrometer |
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2022
- 2022-06-23 CN CN202221573286.9U patent/CN217981308U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116203056A (en) * | 2023-05-05 | 2023-06-02 | 中国检验认证集团河北有限公司黄骅港分公司 | Flatness detection method of fuse piece for X-ray fluorescence spectrometer |
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