CN114523118B

CN114523118B - Crucible on-line remote observation control system of nano metal powder production system

Info

Publication number: CN114523118B
Application number: CN202210157222.9A
Authority: CN
Inventors: 谢上川; 刘德昆; 陈子亮; 李硕
Original assignee: Hangzhou Xinchuan New Material Co ltd
Current assignee: Hangzhou Xinchuan New Material Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2023-07-25
Anticipated expiration: 2042-02-21
Also published as: CN114523118A

Abstract

A crucible on-line remote observation control system of a nano metal powder production system is characterized in that: the computer remote control system comprises a main control computer, a remote client computer, the Internet, a router, a switch, a controller, control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of a nano metal powder production system and is connected with the Internet; the controller device is arranged in a chassis of the main control computer, and is used for operating control software of the nano metal powder production system of the remote client computer, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line; the beneficial effects are that: the crucible can be automatically fed in a long distance, the liquid distance of the crucible opening can be automatically controlled, and the temperature can be automatically controlled; the crucible smelting quality is improved, the production efficiency is improved, the energy is saved, the environmental pollution is reduced, and immeasurable beneficial effects are brought to enterprises and society.

Description

Crucible on-line remote observation control system of nano metal powder production system

Technical Field

The invention relates to a nano metal powder production system, in particular to a crucible online remote observation control system of a nano metal powder production system.

Background

With the rapid development of the new material field, the demand of the nano metal ultrafine powder is rapidly increased, and the quality and performance requirements of the nano metal ultrafine powder are correspondingly improved. Taking molybdenum as an example, the metal and alloy materials have the characteristics of high melting point, high hardness, high strength, good wear resistance, good heat conduction and electrical conductivity, small expansion coefficient, good corrosion resistance and the like, are widely applied to the technical fields of electronics, chemical industry, metallurgy, national defense, aerospace industry and the like, and are represented by a liquid crystal display transparent conductive layer, a solar cell, a glass heat insulation coating, a metal and nonmetal decorative coating, a surface superhard wear-resistant coating, a corrosion-resistant coating and the like.

The method in nano metal can be divided into two major types, namely a physical method and a chemical method, wherein the plasma arc evaporation method in the physical method adopts an anode to perform arc ionization evaporation in high-purity hydrogen and argon with proper partial pressure, and evaporated nano metal particles are condensed and then enter a powder area under the action of air flow, so that nano powder is obtained.

In the process of producing nano metal powder by a plasma arc evaporation method, the temperature of a crucible is particularly important to master, a viewing cylinder is arranged in the viewing cylinder, a plurality of layers of high-temperature-resistant transparent glass is arranged in the viewing cylinder, an operator uses human eyes to observe the condition in the crucible in the melting evaporation device through the plurality of layers of high-temperature-resistant transparent glass on the viewing cylinder, and charging is carried out according to the observed melting state of raw materials in the crucible and the distance between the crucible mouth end and the solution level; moreover, the smelting and evaporating device is required to be stopped during feeding, so that the production efficiency is very low; the temperature of the smelting and evaporating device is inaccurate because the temperature of the smelting and evaporating device is very high and a sensor for measuring the smelting and evaporating temperature is often easy to break and inaccurate in measurement, so that the produced nano metal powder particles are uneven and the quality of the nano metal powder is poor; the development of efficient and stable production methods and equipment for nano metal powder is a very significant work.

Disclosure of Invention

The invention aims to provide an online remote crucible observation control system of a nano metal powder production system, which can solve the problems in the background art.

The technical scheme for solving the technical problems is as follows: 1. the crucible working state is shot on line by adopting a network camera and the image information is transmitted to a computer remote control system, so that the crucible working state is observed through an observation window instead of the working state that in the prior art, a person is required to climb up a smelting evaporation device to observe the crucible working state; 2. detecting the distance between the crucible mouth end and the liquid level of the metal solution by adopting an infrared liquid level detector, and transmitting the crucible mouth liquid distance information to a computer remote control system; 3. detecting the temperature of the solution in the crucible by adopting an infrared thermometer, and transmitting the detected temperature data to a computer remote control system; 4. the information transmitted by the network camera, the infrared thermometer and the infrared liquid level detector is processed and analyzed by adopting a computer remote control system, and the feeding time and the feeding amount of the automatic isolation feeding device and the heating power of the arc plasma controller are controlled according to the requirement standard of the melting evaporation device on the crucible opening liquid distance and the crucible solution temperature.

The crucible on-line remote observation control system of the nano metal powder production system comprises a smelting evaporation device, an integrated sensing device, an automatic isolating and feeding device, an arc plasma controller, a computer remote control system, a condensing system and a nano metal powder collecting device.

The smelting evaporation device comprises a crucible, an inner shell, a cathode, an anode, a hydrogen-argon mixed gas input pipe, a cover plate, an outer shell, a cooling water input pipe B and a cooling water output pipe B; the inner shell and the outer shell are spherical, a cover plate with a detachable opening is arranged at the top, a cathode 105 is arranged on the cover plate, and the cathode is connected with an arc plasma controller; an anode is arranged at the bottom of the inner cavity of the inner shell, and a crucible is arranged on the anode; the left parts of the inner shell and the outer shell are provided with an automatic isolating feeding device and an integrated sensing device, and the integrated sensing device is connected with a computer remote control system; the right parts of the inner shell and the outer shell are provided with a communication pipe and a hydrogen-argon mixed gas input pipe; a cooling water input pipe B is arranged at the left part of the outer shell, and a cooling water output pipe B is arranged at the right part of the outer shell; a space of 10-50mm is reserved between the inner shell and the outer shell for water input by the cooling water input pipe B to pass through, and when the smelting and evaporating device 1 works, the cooling water input pipe B108 inputs water to pass through the space between the inner shell 101 and the outer shell 107 and is discharged through the cooling water output pipe B109, namely, a cooling effect is generated on the inner shell 101.

The automatic isolation feeding device comprises a feeding pipe, an air-isolation feeding box, a first electromagnetic valve, a second electromagnetic valve, a straight pipe, a bent pipe and a feeding hopper, wherein the lower end of the feeding hopper is connected with the feeding pipe, the first electromagnetic valve is arranged on the feeding pipe, and the first electromagnetic valve is used for controlling the opening and closing of the feeding pipe; the lower end of the feeding pipe is connected with an air-isolation feeding box; the lower end of the gas-barrier feeding box is connected with a straight pipe, a second electromagnetic valve is installed on the straight pipe and controls the opening and closing of the straight pipe, and the lower end of the straight pipe is fixedly connected with a bent pipe.

The integrated sensing device comprises an upper observation tube, high-temperature-resistant transparent glass, a cooling main tube, a cooling water input tube A, a cooling water output tube A, a lower observation tube, a photographing device, an infrared temperature measuring device and an infrared liquid level detection device, wherein the upper observation tube and the lower observation tube are connected through threads, the integrated sensing device is convenient to detach, the lower observation tube is provided with an outwards protruding annular groove, the photographing device, the infrared temperature measuring device and the infrared liquid level detection device are located in the annular groove, the upper observation tube and the lower observation tube are both provided with two pieces of high-temperature-resistant transparent glass, the annular groove provides installation space for the photographing device, the infrared temperature measuring device and the infrared liquid level detection device, the cooling main tube extends to the position where the lower observation tube is located in the high-temperature transparent glass, a cooling groove is arranged in the cooling main tube, one side of the cooling main tube is connected with the cooling water input tube A, the other side of the cooling main tube is connected with the cooling water output tube A, and the three instruments in the annular groove are cooled down through water cooling, and the temperature is prevented from being too high.

The camera device comprises a network camera, a first protective shell, a first protective lens A, a second protective lens A, a first fixing plate and a first cover, a gap is reserved between the first protective shell and the network camera and the first protective shell is wrapped by the first protective shell, the first fixing plate is fixedly connected between the first protective shell and the network camera, the first protective lens A and the second protective lens A are arranged below the first protective shell, and the first protective shell is connected with the first cover through threads.

The infrared temperature measuring device comprises an infrared temperature measuring meter, a protective shell II, a protective lens I B, a protective lens II B, a fixing plate II and a cover II, a gap is reserved between the protective shell II and the infrared temperature measuring meter, the fixing plate II is fixedly connected between the protective shell II and the infrared temperature measuring meter, the protective lens I B and the protective lens II B are arranged below the protective shell II, and the cover II is connected with the upper side of the protective shell II in a threaded manner.

The infrared liquid level detection device comprises an infrared liquid level sensor, a protective shell III, a protective lens I C, a protective lens II C, a fixing plate III and a cover III, a gap is reserved between the protective shell III and the infrared liquid level sensor, the fixing plate III is fixedly connected between the protective shell III and the infrared liquid level detector, the protective lens I C and the protective lens II C are arranged below the protective shell III, and the cover III is connected with threads above the protective shell III.

The computer remote control system comprises a main control computer, a remote client computer, the Internet, a router, a switch, a controller, control software of the nano metal powder production system and CPU program software; the operating system of the main control computer is provided with control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of a nano metal powder production system and is connected with the Internet; the controller comprises a CPU, a power supply module, a ROM memory, a RAM memory, a MAX232 module, an NM-1FE-TX network module, a network cable module, an A/D input module and a thyristor output module; the controller device is arranged in a chassis of the main control computer, and a MAX232 module of the controller is connected with a serial interface of the main control computer; the interface of the switch is connected with the LAN interface of the router, and the WAN interface of the router is connected with the Internet; the switch interface is connected with the 1FE-TX network module and the network cable module of the controller; the switch interface is connected with the main control computer; the CPU is a microcomputer processor; the computer remote control system further comprises a nitrogen flow sensor integrated with a sensing device, an infrared thermometer integrated with the sensing device, an infrared liquid level sensor integrated with the sensing device, an arc plasma controller, a battery valve III, a solenoid valve II, a solenoid valve I and a nitrogen flow control valve for control; the control software of the nano metal powder production system of the remote client computer is operated, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line.

The computer remote control system comprises a main control computer, a remote client computer, the Internet, a router, a switch, a controller, nano metal powder production system control software and CPU program software, and also comprises a network camera, a nitrogen flow sensor, an infrared thermometer, an infrared liquid level sensor, an arc plasma controller, a battery valve III, a solenoid valve II, a solenoid valve I and a nitrogen flow control valve; the operating system of the main control computer is provided with control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of a nano metal powder production system and is connected with the Internet; the controller comprises a CPU, a power supply module, a ROM memory, a RAM memory, a MAX232 module, an NM-1FE-TX network module, a network cable module, an A/D input module and a thyristor output module; the controller device is arranged in a chassis of the main control computer, and a MAX232 module of the controller is connected with a serial interface of the main control computer; the interface of the switch is connected with the LAN interface of the router, and the WAN interface of the router is connected with the Internet; the switch interface is connected with the 1FE-TX network module and the network cable module of the controller; the switch interface is connected with the main control computer; the CPU is a microcomputer processor; the A/D input module of the controller is connected with a network camera of the camera device, a nitrogen flow sensor of the integrated sensing device, an infrared thermometer of the integrated sensing device and an infrared liquid level sensor of the integrated sensing device; the thyristor output module of the controller is connected with the arc plasma controller, the battery valve III, the electromagnetic valve II, the electromagnetic valve I and the nitrogen flow control valve; the control software of the nano metal powder production system of the remote client computer is operated, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line.

The working principle of the computer remote control system is as follows: the infrared liquid level sensor transmits distance information between the crucible mouth end and the liquid level of the metal solution to the A/D input module; the infrared thermometer transmits the temperature information of the crucible to the A/D input module; the nitrogen flow sensor transmits nitrogen flow information to the A/D input module; the network camera is connected with a power module, a network cable module and an A/D input module of the controller; the A/D input module converts analog information into digital information and transmits the digital information to the CPU, the CPU processes the information transmitted by the A/D input module according to preset data and transmits a control command to the thyristor output module, and the thyristor output module controls the arc plasma controller, the battery valve III, the electromagnetic valve II, the electromagnetic valve I and the nitrogen flow control valve according to the CPU control command; the arc plasma controller controls the crucible temperature of the smelting and evaporating device; the battery valve III controls the frequency and the interval time of nitrogen injection; the second electromagnetic valve and the first electromagnetic valve control the feeding time and the feeding amount of the automatic isolation feeding device; the nitrogen flow control valve controls the nitrogen flow; CPU program software of the main control computer edits a program to the CPU through a MAX232 module; the control software of the nano metal powder production system of the main control computer is used for local control and production setting; the control software of the nano metal powder production system for operating the remote client computer can remotely observe, control and set production of the nano metal powder production system through the Internet, a router and a switch.

The control software interface of the nano metal powder production system of the computer control system comprises image display, crucible temperature, crucible mouth liquid distance, nitrogen flow and hydrogen-argon mixed gas flow, crucible temperature setting, crucible mouth liquid distance setting, feeding amount/time setting, hydrogen-argon mixed gas inflow setting and nitrogen inflow setting; the image display is used for displaying a boiling evaporation image of the crucible metal solution; the crucible temperature is used for displaying the temperature of the metal solution in the crucible in the heating process; the crucible temperature is set as: 1480-2480 ℃ for controlling the control range of crucible temperature; the crucible opening liquid distance is used for displaying the distance between the liquid level of the metal solution in the crucible and the crucible opening end; the crucible mouth liquid distance is set as: 5-20mm, for setting and controlling the distance between the liquid level of the metal solution in the crucible and the mouth end of the crucible; the liquid distance of the crucible opening is the distance between the end of the crucible opening and the liquid level of the solution in the crucible; the feed amount/time was set as follows: 12-60s, which is used for controlling the time of each feeding and controlling the feeding amount; the air inflow of the hydrogen-argon mixture is set as follows: 3-20m ³ And/h, controlling the air inflow of the hydrogen-argon mixture; the nitrogen intake air amount is set as follows: 380-780m ³ And/h for controlling the amount of intake air of nitrogen.

The condensing system comprises a condensing chamber, a communication pipe, a second ring pipe, a cold air pipe, a third electromagnetic valve, a cold air main pipe, a third valve, a nitrogen input, a second valve, a one-way valve, a buffer tank, a first valve, a first ring pipe, an evaporation outlet, a nitrogen jet orifice, a nitrogen flow control valve and a nitrogen flow sensor, wherein the communication pipe is connected with the first ring pipe, the bottom of the first ring pipe is provided with a plurality of evaporation outlets, the evaporation outlet is positioned at the bottom of the first ring pipe and used for preventing metal powder from accumulating in the first ring pipe, the second ring pipe is arranged above the condensing chamber, the second ring pipe is connected with the cold air main pipe, a plurality of cold air pipes are arranged between the second ring pipe and the condensing chamber, the third electromagnetic valve is arranged on the cold air pipe, only three electromagnetic valves are simultaneously opened each time through controlling, the distances among the three electromagnetic valves which are opened are the same to form a triangle, and the three electromagnetic valves are sequentially opened every time, the cold air can uniformly enter the condensation chamber through the cold air pipe, the condensation forming effect of the nano metal powder is better, the bottom of the condensation chamber is provided with a nano metal powder collecting device, two sides of the nano metal powder collecting device are provided with air outlet pipes, the air outlet pipes are communicated with buffer tanks, the air outlet pipes are provided with first valves, the upper ends of the buffer tanks are connected with a cold air main pipe, the middle of the cold air main pipe is connected with nitrogen input which is introduced for cooling, a one-way valve and a second valve are arranged between the nitrogen input and the buffer tanks, a third valve is arranged between the nitrogen input and a second ring pipe, a nitrogen flow control valve and a nitrogen flow sensor are arranged between the third valve and the second ring pipe, the nitrogen flow is detected through the nitrogen flow sensor and is transmitted to a computer remote control system, controlling the flow rate of the nitrogen flow control valve, condensing the metal powder in the condensing chamber into superfine metal powder, falling into the nano metal powder collecting device, collecting the nano metal powder by the nano metal powder collecting device, allowing gas to enter the buffer tank from the gas outlet pipe through the nano metal powder collecting bag, connecting the upper end of the buffer tank with the cold air main pipe, and preventing the cooling nitrogen introduced by the nitrogen from flowing into the buffer tank through the one-way valve.

The nanometer metal powder collecting device comprises a collecting box, an air outlet pipe, a nanometer metal powder collecting opening, a boss, a nanometer metal powder collecting bag, a closing-in rope, a collecting pipe, a door plate and a manual valve; the collecting box side is provided with the door plant that can open according to, the entry external fixation of collecting box has nanometer metal powder to collect the mouth, nanometer metal powder collects mouth bottom fixedly connected with boss, and nanometer metal powder collects mouthful cover and have the nanometer metal powder collection bag that is used for collecting the metal powder, and fix nanometer metal powder collection bag on nanometer metal powder collects the mouth through the binding cord to the boss prevents that the binding cord from dropping, the both sides of collecting box are equipped with the outlet duct, and the metal powder in the condensation chamber condenses into superfine spherical metal powder and falls into in the nanometer metal powder collection bag in the collecting box, and nanometer metal powder collection bag filters out the metal powder, and gas permeates nanometer metal powder collection bag and gets into the buffer tank from the outlet duct, is connected with cold air house steward from the buffer tank upper end, and the check valve prevents that the cooling nitrogen gas that the nitrogen gas lets in from flowing into in the buffer tank, installs the collecting pipe between collecting box and the condensation chamber, the collecting pipe is installed manual valve, closes the collecting pipe through manual valve and takes out nanometer metal powder collection bag after the collecting pipe.

The method comprises the steps that an infrared liquid level detector detects the height of nano metal solution in a crucible at moment, the lowest liquid level is arranged in a computer remote control system, once the liquid level distance of a crucible opening in the crucible is reduced to the lowest liquid level, the computer remote control system controls a solenoid valve II to be opened, the solenoid valve I is closed, only raw materials in a gas-insulated feed box fall into the crucible, the solenoid valve I separates the raw materials in the feed hopper from a smelting evaporation device, heat is prevented from being gushed out from the feed hopper, the raw materials in the gas-insulated feed box fall into the crucible, the solenoid valve II is closed, the solenoid valve I is opened, the raw materials in the feed hopper enter the gas-insulated feed box to be filled up, the raw materials enter the crucible quantitatively each time, the dosage is effectively controlled, the temperature in the crucible is controlled by a plasma controller, the cathode is fixed in the smelting evaporation device and is positioned above the crucible, the crucible is a conductive crucible, the bottom of the crucible is provided with an anode, the conductive crucible is connected with a cooling system, the gas circuit is prevented from being excessively high in temperature, the hydrogen and argon power supply is respectively connected with the cathode and the anode, the anode of the power supply and the crucible is connected with the anode of the power supply, and the cathode of the tungsten supply and the cathode of the crucible is connected with the tungsten supply, and the two electrodes are in a high-temperature state, and the plasma chamber is in a high-state, and the electric arc state is discharged; raw materials evaporate on the positive pole, supersaturated steam flows to the condensation chamber through the communication pipe, the growth of re-nucleating becomes nano metal powder, electric arc plasma controller evaporates the raw materials, move to the condensation chamber through the communication pipe along with gas, the formation metal powder of re-cooling, and the raw materials in the crucible is in the continuous consumption in-process, the liquid level constantly descends, feed hopper is controlled by computer remote control system and is reinforced, liquid level state when raw materials melt the evaporation in the crucible is monitored through the webcam in the integrated sensing device, simultaneously infrared thermometer monitors the temperature in the crucible, with monitor picture and monitor temperature direct transmission to the computer display screen of the computer remote control system in office, do not need the operating personnel to look at the integrated sensing device at the side of smelting evaporation plant all the time.

The invention has the beneficial effects that: the crucible can be automatically fed in a long distance, the liquid distance of the crucible opening can be automatically controlled, and the temperature can be automatically controlled; the crucible smelting quality is improved, the production efficiency is improved, the development of the smelting industry is promoted, the energy is saved, the environmental pollution is reduced, and immeasurable beneficial effects are brought to enterprises and society.

Drawings

FIG. 1 is a block diagram of a nano-metal powder production system;

FIG. 2 is a cross-sectional view of a melting and evaporating device of a nano-metal powder production system;

FIG. 3 is a schematic diagram of an automatic isolation feeding device of a nano metal powder production system;

FIG. 4 is a schematic diagram of an integrated sensor device of a nano-metal powder production system;

FIG. 5 is a cross-sectional view taken along A-A of FIG. 4;

FIG. 6 is a B-B cross-sectional view of FIG. 5;

FIG. 7 is a cross-sectional view of an imaging device of the integrated sensing device;

FIG. 8 is a cross-sectional view of an infrared temperature measurement device of the integrated sensing device;

FIG. 9 is a cross-sectional view of an infrared level detection device of the integrated sensing device;

FIG. 10 is a control schematic diagram of a computer control system of the present invention;

FIG. 11 is a schematic diagram of a control interface of the control software of the nano metal powder production system of the present invention;

FIG. 12 is a diagram of a condensing system of a nano-metal powder production system;

FIG. 13 is a cross-sectional view of the interior of a condensing system of a nano-metal powder production system;

FIG. 14 is a perspective view of a nano-metal powder collection device of a nano-metal powder production system;

fig. 15 is a cross-sectional view of a nano-metal powder collecting apparatus of a nano-metal powder production system.

Reference numerals: 1. a smelting and evaporating device; 101. an inner housing; 102. a crucible; 103. an anode; 104. a hydrogen-argon mixed gas input pipe; 105. a cathode; 106. a cover plate; 107. an outer housing; 108. a cooling water input pipe B; 109. a cooling water output pipe B; 2. automatically isolating the feeding device; 201. a feed pipe; 202. a gas-insulated feeding box; 203. a first electromagnetic valve; 204. a second electromagnetic valve; 205. a straight pipe; 206. bending the pipe; 207. a feed hopper; 3. an integrated sensing device; 301. high temperature resistant transparent glass; 302. an image pickup device; 3021. a first protective shell; 3022. protecting the first lens A; 3023. protecting the second lens A; 3024. a first fixing plate; 3025. a first cover; 3026. a network camera; 303. an infrared temperature measuring device; 3031. a second protective shell; 3032. protecting the first lens B; 3033. protecting a second lens B; 3034. a second fixing plate; 3035. a second cover; 3036. an infrared thermometer; 304. an infrared liquid level detection device; 3041. a protective shell III; 3042. protecting the first lens C; 3043. protecting a second lens C; 3044. a fixing plate III; 3045. a third cover; 3046. an infrared liquid level sensor; 305. cooling the main pipe; 306. a cooling tank; 307. a cooling water input pipe A; 308. an upper observation tube; 309. a lower observation tube; 310. a cooling water output pipe A; 311. a ring groove; 4. a computer remote control system; 5. an arc plasma controller; 6. a condensing system; 601. a condensing chamber; 602. a communicating pipe; 603. a second ring pipe; 604. a cold air pipe; 605. a third electromagnetic valve; 606. a cold air main pipe; 607. a third valve; 608. nitrogen input; 609. a second valve; 610. a one-way valve; 611. a buffer tank; 612. a valve I; 613. a first ring pipe; 614. an evaporation outlet; 615. a nitrogen jet port; 616. a nitrogen flow control valve; 617. a nitrogen flow sensor; 7. a nano metal powder collecting device; 701. an air outlet pipe; 702. a nano metal powder collecting port; 703. a boss; 704. a nano metal powder collecting bag; 705. closing up the rope; 706. a collection pipe; 707. a door panel; 708. a collection box; 709. and (5) a manual valve.

Detailed Description

The present invention will be described in detail below with reference to the drawings and examples.

Embodiment one:

in fig. 1, the crucible on-line remote observation control system of the nano metal powder production system comprises a smelting and evaporation device 1, an integrated sensing device 3, an automatic isolation feeding device 2, an arc plasma controller 5, a computer remote control system 4, a condensing system 6 and a nano metal powder collecting device 7.

In fig. 2, the smelting-evaporating apparatus 1 includes a crucible 102, an inner housing 101, a cathode 105, an anode 103, a hydrogen-argon mixture gas input pipe 104, a cover plate 106, an outer housing 107, a cooling water input pipe B108, and a cooling water output pipe B109; the inner shell 101 and the outer shell 107 are spherical, a cover plate 106 with a detachable opening is arranged at the top, a cathode 105 is arranged on the cover plate 106, and the cathode 105 is connected with the arc plasma controller 5; an anode 103 is arranged at the bottom of the inner cavity of the inner shell 101, the anode 103 is connected with an arc plasma controller 5, and a crucible 102 is arranged on the anode 103; the left parts of the inner shell 101 and the outer shell 107 are provided with an automatic isolating feeding device 2 and an integrated sensing device 3, and the integrated sensing device 3 is connected with a computer remote control system 4; the right parts of the inner shell 101 and the outer shell 107 are provided with a communication pipe 602 and a hydrogen-argon mixed gas input pipe 104, the communication pipe 602 is used for connecting a condensing system 6, and the hydrogen-argon mixed gas input pipe 104 is used for connecting a hydrogen-argon mixed gas source; a cooling water input pipe B108 is arranged at the left part of the outer shell 107, and a cooling water output pipe B109 is arranged at the right part; a space of 10-30mm is reserved between the inner shell 101 and the outer shell 107 for the water input by the cooling water input pipe B108 to pass through, and when the smelting and evaporating device 1 works, the cooling water input pipe B108 inputs water to pass through the space between the inner shell 101 and the outer shell 107 and is discharged through the cooling water output pipe B109, namely, a cooling effect is generated on the inner shell 101.

In fig. 3, the automatic isolating and feeding device 2 comprises a feeding pipe 201, an air isolating feeding box 202, a first electromagnetic valve 203, a second electromagnetic valve 204, a straight pipe 205, a bent pipe 206 and a feeding hopper 207, wherein the feeding pipe 201 is arranged at the lower end of the feeding hopper 207, the first electromagnetic valve 203 is arranged on the feeding pipe 201, and the first electromagnetic valve 203 is used for controlling the opening and closing of the feeding pipe 201; the lower end of the feeding pipe 201 is provided with an air-isolation feeding box 202; the air-isolation feeding box 202 is characterized in that the lower end of the air-isolation feeding box 202 is connected with a straight pipe 205, a second electromagnetic valve 204 is installed on the straight pipe 205, the second electromagnetic valve 204 controls the opening and closing of the straight pipe 205, the lower end of the straight pipe 205 is fixedly connected with a bent pipe 206, and the automatic isolation feeding device 2 has the following functions: the automatic feeding can be realized without closing the smelting and evaporating device 1; the working principle of the automatic isolation feeding device 2 is as follows: when feeding is needed, the computer remote control system 4 instructs the solenoid valve I203 to open, and controls the opening time of the solenoid valve I203 according to the feeding setting amount, at this time, the feeding hopper 207 conveys metal ore to the gas-insulated feeding box 202, the solenoid valve I203 is closed after the setting amount is reached, the computer remote control system 4 instructs the solenoid valve II 204 to open after the solenoid valve I203 is closed, and the same opening time as the solenoid valve I203 is set, the metal ore of the gas-insulated feeding box 202 is slid to the crucible in the smelting and evaporating device 1 through the slope of the straight pipe 205, the solenoid valve II 204 and the bent pipe 206 after the solenoid valve II 204 is opened, the solenoid valve II 204 is automatically closed after the feeding time of the solenoid valve II 204 is completed, and the automatic feeding is completed.

In fig. 4, 5 and 6, the integrated sensing device 3 includes an upper observation tube 308, a high temperature resistant transparent glass 301, a cooling main tube 305, a cooling water input tube a307, a cooling water output tube a310, a ring groove 311, a cooling groove 306, a lower observation tube 309, an image pickup device 302, an infrared temperature measuring device 303 and an infrared liquid level detecting device 304; the upper observation tube 308 is connected with the lower observation tube 309, the lower observation tube 309 is provided with an annular groove 311 protruding outwards, the image pickup device 302, the infrared temperature measuring device 303 and the infrared liquid level detecting device 304 are positioned in the annular groove 311, the upper observation tube 308 and the lower observation tube 309 are provided with two pieces of high-temperature-resistant transparent glass 301, the annular groove 311 provides installation space for the image pickup device 302, the infrared temperature measuring device 303 and the infrared liquid level detecting device 304, a cooling groove 306 is arranged in the cooling main tube 305, one side of the cooling main tube 305 is connected with a cooling water input tube A307, the other side is connected with a cooling water output tube A310, and when the cooling groove 306 is filled with cooling water, the image pickup device 302, the infrared temperature measuring device 303, the infrared liquid level detecting device 304 and the high-temperature-resistant transparent glass 301 are cooled down for protection.

In fig. 7, the image capturing device 302 includes a network camera 3026, a first protective housing 3021, a first protective lens a3022, a second protective lens a3023, a first fixing plate 3024, and a first cover 3025, a gap is left between the first protective housing 3021 and the network camera 3026 and the first protective housing 3021 and the network camera 3026 are fixedly connected with a first fixing plate 3024, a first protective lens a3022 and a second protective lens a3023 are disposed below the first protective housing 3021, and the first cover 3025 is screwed above the first protective housing 3021.

In fig. 8, the infrared temperature measuring device 303 includes an infrared thermometer 3036, a second protective housing 3031, a first protective lens B3032, a second protective lens B3033, a second fixing plate 3034 and a second cover 3035, a gap is left between the second protective housing 3031 and the infrared thermometer 3036, the second fixing plate 3034 is fixedly connected between the second protective housing 3031 and the infrared thermometer 3036, the first protective lens B3032 and the second protective lens B3033 are arranged below the second protective housing 3031, and the second cover 3035 is screwed above the second protective housing 3031.

In fig. 9, the infrared liquid level detecting device 304 includes an infrared liquid level sensor 3046, a third protective housing 3041, a first protective lens C3042, a second protective lens C3043, a third fixing plate 3044, a third cover 3045, a gap left between the third protective housing 3041 and the infrared liquid level detector 3046, a third fixing plate 3044 fixedly connected between the third protective housing 3041 and the infrared liquid level detector 3046, and a second protective lens C3043 arranged below the third protective housing 3041, wherein the third cover 3045 is screwed above the third protective housing 3041.

In fig. 10, the computer remote control system 4 includes a master control computer, a remote client computer, the Internet, a router, a switch, a controller, a nano metal powder production system control software, a CPU program software, a network camera 3026, a nitrogen flow sensor 617, an infrared thermometer 3036, an infrared liquid level sensor 3046, an arc plasma controller 5, a battery valve three 605, a solenoid valve two 204, a solenoid valve one 203, and a nitrogen flow control valve 616; the operating system of the main control computer is provided with control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of a nano metal powder production system and is connected with the Internet; the controller comprises a CPU, a power supply module, a ROM memory, a RAM memory, a MAX232 module, an NM-1FE-TX network module, a network cable module, an A/D input module and a thyristor output module; the controller device is arranged in a chassis of the main control computer, and a MAX232 module of the controller is connected with a serial interface of the main control computer; the interface of the switch is connected with the LAN interface of the router, and the WAN interface of the router is connected with the Internet; the switch interface is connected with the 1FE-TX network module and the network cable module of the controller; the switch interface is connected with the main control computer; the CPU is a microcomputer processor; the A/D input module of the controller is connected with the network camera 3026, the nitrogen flow sensor 617, the infrared thermometer 3036 and the infrared liquid level collection sensor 3046; the thyristor output module of the controller is connected with the arc plasma controller 5, the battery valve III 605, the solenoid valve II 204, the solenoid valve I203 and the nitrogen flow control valve 616; the control software of the nano metal powder production system of the remote client computer is operated, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line.

In fig. 10, the working principle of the computer remote control system 4 is as follows: the infrared liquid level sensor 3046 transmits the distance information between the mouth end of the crucible 102 and the liquid level of the metal solution to the A/D input module; the infrared thermometer 3036 transmits the temperature information of the crucible 102 to the a/D input module; the nitrogen flow sensor 617 transmits nitrogen flow information to the a/D input module; the network camera 3026 is connected with the power supply module and the network cable module of the controller, and the A/D input module; the A/D input module converts analog information into digital information and transmits the digital information to the CPU, the CPU processes the information transmitted by the A/D input module according to preset data and transmits a control command to the thyristor output module, and the thyristor output module controls the arc plasma controller 5, the battery valve III 605, the electromagnetic valve II 204, the electromagnetic valve I203 and the nitrogen flow control valve 616 according to the CPU control command; the arc plasma controller 5 controls the temperature of the crucible 102 of the smelting and evaporating device 1; the third battery valve 605 controls the frequency and interval time of nitrogen injection; the electromagnetic valve II 204 and the electromagnetic valve I203 control the feeding time and the feeding amount of the automatic isolation feeding device 2; the nitrogen flow control valve 616 controls the nitrogen flow; CPU program software of the main control computer edits a program to the CPU through a MAX232 module; the control software of the nano metal powder production system of the main control computer is used for local control and production setting; the control software of the nano metal powder production system for operating the remote client computer can remotely observe, control and set production of the nano metal powder production system through the Internet, a router and a switch.

In fig. 11, the control software interface of the nano metal powder production system of the computer control system 4 comprises image display, crucible temperature, crucible mouth liquid distance, nitrogen flow, hydrogen-argon mixed gas flow, crucible temperature setting, crucible mouth liquid distance setting, feeding amount/time setting, hydrogen-argon mixed gas inflow setting and nitrogen inflow setting; the image display is used for displaying a boiling evaporation image of the metal solution of the crucible 102; the crucible temperature is used for displaying the temperature of the metal solution in the crucible in the heating process; the crucible temperature is set as: 1480-2480 ℃ for controlling the control range of crucible temperature; the crucible opening liquid distance is used for displaying the distance between the liquid level of the metal solution in the crucible and the crucible opening end; the crucible mouth liquid distance is set as: 5-20mm, for setting and controlling the distance between the liquid level of the metal solution in the crucible and the mouth end of the crucible; the liquid distance of the crucible opening is the distance between the end of the crucible opening and the liquid level of the solution in the crucible; the feed amount/time was set as follows: 12-60s, which is used for controlling the time of each feeding and controlling the feeding amount; the air inflow of the hydrogen-argon mixture is set as follows: 3-20m ³ And/h, controlling the air inflow of the hydrogen-argon mixture; the nitrogen intake air amount is set as follows: 380-780m ³ And/h for controlling the amount of intake air of nitrogen.

In fig. 12 and 13, the condensing system 6 includes a condensing chamber 601, a communicating pipe 602, a second loop 603, a cold air pipe 604, a third solenoid valve 605, a cold air main 606, a third valve 607, a nitrogen input 608, a second valve 609, a check valve 610, a buffer tank 611, a first valve 612, a first loop 613, an evaporation outlet 614, a nitrogen injection port 615, a nitrogen flow control valve 616, and a nitrogen flow sensor 617; the communication pipe 602 is connected with a first annular pipe 613, a plurality of evaporation outlets 614 are arranged at the bottom of the first annular pipe 613, and the evaporation outlets 614 are positioned at the bottom of the first annular pipe 613 to prevent metal powder from accumulating in the first annular pipe 613; a second ring pipe 603 is arranged above the condensation chamber 601, the second ring pipe 603 is connected with a cold air main pipe 606, a plurality of cold air pipes 604 are arranged between the second ring pipe 603 and the condensation chamber 601, and electromagnetic valves three 605 are arranged on the cold air pipes 604, only three electromagnetic valves three 605 are opened each time by controlling the same distance between the three electromagnetic valves three 605 which are opened to form a triangle, and cold air can uniformly enter the condensation chamber 601 through the cold air pipes 604 every 2-5s, so that the nano metal powder condensation forming effect is better; the bottom of the condensation chamber 601 is connected with a collecting pipe 706, the collecting pipe 706 is connected with a nano metal powder collecting device 7, a manual valve 709 is arranged on the collecting pipe 706, air outlet pipes 701 are arranged on two sides of the nano metal powder collecting device 7, the air outlet pipes 701 are communicated with a buffer tank 611, a valve I612 is arranged on the air outlet pipes 701, the upper ends of the buffer tank 611 are connected with a cold air main pipe 606, a nitrogen gas input 608 for cooling is connected in the middle of the cold air main pipe 606, the cold air main pipe 606 is positioned between the nitrogen gas input 608 and the buffer tank 611, a one-way valve 610 and a valve II 609 are arranged between the nitrogen gas input 608 and a ring pipe II 603, a valve III 607 and a ring pipe II 603 are provided with a nitrogen gas flow control valve 616 and a nitrogen gas flow sensor 617, the nitrogen gas flow is detected through the nitrogen gas flow sensor 617, the nitrogen gas flow is transmitted to a computer remote control system 4, the flow of the nitrogen gas flow control valve 616 is controlled, the metal powder in the condensation chamber 601 is condensed into ultrafine metal powder which falls into the nano metal powder collecting device 7, and the nano metal powder is collected by the nano metal powder collecting device 7.

In fig. 14 and 15, the nano metal powder collecting device 7 includes a collecting box 708, an air outlet pipe 701, a nano metal powder collecting port 702, a boss 703, a nano metal powder collecting bag 704, a closing rope 705, a collecting pipe 706, a door 707, and a manual valve 709; the collecting box 708 upper end sets up collecting pipe 706, manual valve 709 is installed to collecting pipe 706, and collecting box 708 inside upper end fixedly connected with nanometer metal powder collects mouth 702, nanometer metal powder collects mouth 702 bottom fixedly connected with boss 703, and nanometer metal powder collects mouth 702 cover has the nanometer metal powder that is used for collecting the metal powder to collect bag 704, through binding off rope 705 with nanometer metal powder collection bag 704 fixed on the ring bench to boss 703 prevents binding off rope 705 and drops, collecting box 708's both sides are equipped with outlet duct 701. The side of the collecting box 708 is provided with an openable door 707, and after the collecting pipe 706 is closed by a manual valve 709, the door 707 is opened to take out the nano metal powder collecting bag 704.

Embodiment two:

In fig. 10, the computer remote control system 4 includes a master control computer, a remote client computer, the Internet, a router, a switch, a controller, a nano metal powder production system control software, a CPU program software, a network camera 3026, a nitrogen flow sensor 617, an infrared thermometer 3036, an infrared liquid level sensor 3046, an arc plasma controller 5, a battery valve three 605, a solenoid valve two 204, a solenoid valve one 203, and a nitrogen flow control valve 616; the operating system of the main control computer is provided with control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of a nano metal powder production system and is connected with the Internet; the controller comprises a CPU, a power supply module, a ROM memory, a RAM memory, a MAX232 module, an NM-1FE-TX network module, a network cable module, an A/D input module and a thyristor output module; the controller device is arranged in a chassis of the main control computer, and a MAX232 module of the controller is connected with a serial interface of the main control computer; the interface of the switch is connected with the LAN interface of the router, and the WAN interface of the router is connected with the Internet; the switch interface is connected with the 1FE-TX network module and the network cable module of the controller; the switch interface is connected with the main control computer; the CPU is a microcomputer processor, and the microcomputer processor CPU adopts LPC2114; the A/D input module of the controller is connected with a network camera 3026 of the image pickup device 302, a nitrogen flow sensor 617 of the integrated sensing device 3, an infrared thermometer 3036 of the integrated sensing device 3 and an infrared liquid level sensor 3046 of the integrated sensing device 3; the thyristor output module of the controller is connected with the arc plasma controller 5, the battery valve III 605, the solenoid valve II 204, the solenoid valve I203 and the nitrogen flow control valve 616; the control software of the nano metal powder production system of the remote client computer is operated, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line.

In fig. 11, the control software interface of the nano metal powder production system of the computer control system 4 comprises image display, crucible temperature, crucible mouth liquid distance, nitrogen flow, hydrogen-argon mixed gas flow, crucible temperature setting, crucible mouth liquid distance setting, feeding amount/time setting, hydrogen-argon mixed gas inflow setting and nitrogen inflow setting; the image display is used for displaying a boiling evaporation image of the metal solution of the crucible 102; the crucible temperature is used for displaying the heating processThe temperature of the metal solution in the middle crucible; the crucible temperature is set as: 1450-2450 ℃ for controlling the control range of crucible temperature; the crucible opening liquid distance is used for displaying the distance between the liquid level of the metal solution in the crucible and the crucible opening end; the crucible mouth liquid distance is set as: 8-16mm for setting and controlling the distance between the liquid level of the metal solution in the crucible and the mouth end of the crucible; the liquid distance of the crucible opening is the distance between the end of the crucible opening and the liquid level of the solution in the crucible; the feed amount/time was set as follows: 10-50s, which is used for controlling the time of each feeding and controlling the feeding amount; the air inflow of the hydrogen-argon mixture is set as follows: 2-18m ³ And/h, controlling the air inflow of the hydrogen-argon mixture; the nitrogen intake air amount is set as follows: 370-760m ³ And/h for controlling the amount of intake air of nitrogen.

Embodiment III:

In fig. 2, the smelting-evaporating apparatus 1 includes a crucible 102, an inner housing 101, a cathode 105, an anode 103, a hydrogen-argon mixture gas input pipe 104, a cover plate 106, an outer housing 107, a cooling water input pipe B108, and a cooling water output pipe B109; the inner shell 101 and the outer shell 107 are spherical, a cover plate 106 with a detachable opening is arranged at the top, a cathode 105 is arranged on the cover plate 106, and the cathode 105 is connected with the arc plasma controller 5; an anode 103 is arranged at the bottom of the inner cavity of the inner shell 101, the anode 103 is connected with an arc plasma controller 5, and a crucible 102 is arranged on the anode 103; the left parts of the inner shell 101 and the outer shell 107 are provided with an automatic isolating feeding device 2 and an integrated sensing device 3, and the integrated sensing device 3 is connected with a computer remote control system 4; the right parts of the inner shell 101 and the outer shell 107 are provided with a communication pipe 602 and a hydrogen-argon mixed gas input pipe 104, the communication pipe 602 is used for connecting a condensing system 6, and the hydrogen-argon mixed gas input pipe 104 is used for connecting a hydrogen-argon mixed gas source; a cooling water input pipe B108 is arranged at the left part of the outer shell 107, and a cooling water output pipe B109 is arranged at the right part; a space of 15-30mm is reserved between the inner shell 101 and the outer shell 107 for the water input by the cooling water input pipe B108 to pass through, and when the smelting and evaporating device 1 works, the cooling water input pipe B108 inputs water to pass through the space between the inner shell 101 and the outer shell 107 and is discharged through the cooling water output pipe B109, namely, a cooling effect is generated on the inner shell 101.

In fig. 11, the control software interface of the nano metal powder production system of the computer control system 4 comprises image display, crucible temperature, crucible mouth liquid distance, nitrogen flow, hydrogen-argon mixed gas flow, crucible temperature setting, crucible mouth liquid distance setting, feeding amount/time setting, hydrogen-argon mixed gas inflow setting and nitrogen inflow setting; the image display is used for displaying a boiling evaporation image of the metal solution of the crucible 102; the crucible temperature is used for displaying the temperature of the metal solution in the crucible in the heating process; the crucible temperature is set as: 1500-2500 ℃ for controlling the control range of crucible temperature; the crucible opening liquid distance is used for displaying the distance between the liquid level of the metal solution in the crucible and the crucible opening end; the crucible mouth liquid distance is set as: 9-18mm, which is used for setting and controlling the distance between the liquid level of the metal solution in the crucible and the mouth end of the crucible; the liquid distance of the crucible opening is the distance between the end of the crucible opening and the liquid level of the solution in the crucible; the feed amount/time was set as follows: 15-70s, which is used for controlling the time of each feeding and controlling the feeding amount; the air inflow of the hydrogen-argon mixture is set as follows: 3-20m ³ And/h, controlling the air inflow of the hydrogen-argon mixture; the nitrogen intake air amount is set as follows: 400-820m ³ And/h for controlling the amount of intake air of nitrogen.

Claims

1. The crucible online remote observation control system of the nano metal powder production system comprises a smelting evaporation device (1), an integrated sensing device (3), an automatic isolation feeding device (2), an arc plasma controller (5), a computer remote control system (4), a condensing system (6) and a nano metal powder collecting device (7); the method is characterized in that: the smelting and evaporating device (1) comprises a crucible (102), an inner shell (101), a cathode (105), an anode (103), a hydrogen-argon mixed gas input pipe (104), a cover plate (106), an outer shell (107), a cooling water input pipe B (108) and a cooling water output pipe B (109); the inner shell (101) and the outer shell (107) are spherical, a cover plate (106) with a detachable opening is arranged at the top, a cathode (105) is arranged on the cover plate (106), and the cathode (105) is connected with the arc plasma controller (5); an anode (103) is arranged at the bottom of an inner cavity of the inner shell (101), the anode (103) is connected with an arc plasma controller (5), and a crucible (102) is arranged on the anode (103); the left parts of the inner shell (101) and the outer shell (107) are provided with an automatic isolating feeding device (2) and an integrated sensing device (3), and the integrated sensing device (3) is connected with a computer remote control system (4); the right parts of the inner shell (101) and the outer shell (107) are provided with a communication pipe (602) and a hydrogen-argon mixed gas input pipe (104), the communication pipe (602) is used for connecting a condensing system (6), and the hydrogen-argon mixed gas input pipe (104) is used for connecting a hydrogen-argon mixed gas source; the left part of the outer shell (107) is provided with a cooling water input pipe B (108), and the right part is provided with a cooling water output pipe B (109); a space of 10-30mm is reserved between the inner shell (101) and the outer shell (107) for the water input by the cooling water input pipe B (108) to pass through, and the water input by the cooling water input pipe B (108) passes through the space between the inner shell (101) and the outer shell (107) and is discharged through the cooling water output pipe B (109); the crucible working state is shot on line by adopting a network camera and image information is transmitted to a computer remote control system; detecting the distance between the crucible mouth end and the liquid level of the metal solution by adopting an infrared liquid level detector, and transmitting the crucible mouth liquid distance information to a computer remote control system; detecting the temperature of the solution in the crucible by adopting an infrared thermometer, and transmitting the detected temperature data to a computer remote control system; the method comprises the steps of adopting a computer remote control system to process and analyze information transmitted by a network camera, an infrared thermometer and an infrared liquid level detector, controlling the feeding time and feeding amount of an automatic isolation feeding device and controlling the heating power of an arc plasma controller according to the requirement standard of a melting evaporation device on the crucible opening liquid distance and the crucible solution temperature; the integrated sensing device (3) comprises an upper observation tube (308), high-temperature-resistant transparent glass (301), a cooling main tube (305), a cooling water input tube A (307), a cooling water output tube A (310), a ring groove (311), a cooling groove (306), a lower observation tube (309), an image pickup device (302), an infrared temperature measuring device (303) and an infrared liquid level detection device (304); the upper observation tube (308) and the lower observation tube (309) are connected, the lower observation tube (309) is provided with an annular groove (311) protruding outwards, the camera device (302), the infrared temperature measuring device (303) and the infrared liquid level detecting device (304) are positioned in the annular groove (311), the upper observation tube (308) and the lower observation tube (309) are both provided with two pieces of high-temperature-resistant transparent glass (301), the annular groove (311) provides installation space for the camera device (302), the infrared temperature measuring device (303) and the infrared liquid level detecting device (304), a cooling groove (306) is arranged in the cooling main tube (305), one side of the cooling main tube (305) is connected with a cooling water input tube A (307), the other side is connected with a cooling water output tube A (310), and when the cooling groove (306) is filled with cooling water to cool the camera device (302), the infrared temperature measuring device (303), the infrared liquid level detecting device (304) and the high-temperature-resistant transparent glass (301); the infrared temperature measuring device (303) comprises an infrared temperature measuring meter (3036), a protective shell II (3031), a protective lens I B (3032), a protective lens II B (3033), a fixed plate II (3034) and a cover II (3035), a gap is reserved between the protective shell II (3031) and the infrared temperature measuring meter (3036), a fixed plate II (3034) is fixedly connected between the protective shell II (3031) and the infrared temperature measuring meter (3036), and a protective lens I B (3032) and a protective lens II B (3033) are arranged below the protective shell II (3031) and are in threaded connection with the cover II (3035) above the protective shell II (3031).

2. The crucible on-line remote observation control system of the nano metal powder production system according to claim 1, wherein the crucible on-line remote observation control system is characterized in that: the computer remote control system (4) comprises a main control computer, a remote client computer, the Internet, a router, a switch, a controller, nano metal powder production system control software and CPU program software, and also comprises a network camera (3026), a nitrogen flow sensor (617), an infrared thermometer (3036), an infrared liquid level sensor (3046) and an arc plasma controller (5).

3. The crucible on-line remote observation control system of the nano metal powder production system according to claim 2, wherein the crucible on-line remote observation control system is characterized in that: the operating system of the main control computer is provided with control software of the nano metal powder production system and CPU program software; the remote client computer is provided with control software of the nano metal powder production system and is connected with the Internet; the controller comprises a CPU, a power supply module, a ROM memory, a RAM memory, a MAX232 module, an NM-1FE-TX network module, a network cable module, an A/D input module and a thyristor output module; the CPU is a microcomputer processor, and an A/D input module of the controller is connected with a network camera (3026) of the camera device (302), a nitrogen flow sensor (617) of the integrated sensing device (3), an infrared thermometer (3036) of the integrated sensing device (3) and an infrared liquid level sensor (3046) of the integrated sensing device (3); the control software of the nano metal powder production system of the remote client computer is operated, so that the crucible of the nano metal powder production system can be remotely observed and controlled on line.

4. The crucible on-line remote observation control system of the nano metal powder production system according to claim 1, wherein the crucible on-line remote observation control system is characterized in that: the control software interface of the nano metal powder production system of the computer remote control system (4) comprises image display, crucible temperature, crucible mouth liquid distance, nitrogen flow and hydrogen-argon mixed gas flow, crucible temperature setting, crucible mouth liquid distance setting, feeding amount/time setting, hydrogen-argon mixed gas inflow setting and nitrogen inflow setting.

5. The crucible on-line remote observation control system of the nano metal powder production system according to claim 4, wherein the crucible on-line remote observation control system is characterized in that: the image display is used for displaying a boiling evaporation image of the metal solution of the crucible (102); the crucible temperature is used for displaying the temperature of the metal solution in the crucible in the heating process; the crucible temperature was set to: 1450-2450 ℃ for controlling the control range of crucible temperature; the distance between the liquid at the mouth of the crucible and the liquid level of the metal solution in the crucible is displayed; the crucible mouth liquid distance is set as: 8-16mm for setting and controlling the distance between the liquid level of the metal solution in the crucible and the mouth end of the crucible; the liquid distance of the crucible opening is the distance between the end of the crucible opening and the liquid level of the solution in the crucible; the feed amount/time was set as follows: 10-50s, which is used for controlling the time of each feeding and controlling the feeding amount; the air inflow of the hydrogen-argon mixture is set as follows: 2-18m ³ And/h, controlling the air inflow of the hydrogen-argon mixture; the nitrogen intake air amount was set as: 370-760m ³ And/h for controlling the amount of intake air of nitrogen.