Novel bismuth oxide electric arc furnace

Abstract

The utility model discloses a novel bismuth oxide electric arc furnace which comprises an upper furnace body and a lower furnace body, a crucible is arranged in the lower furnace body, one side of the lower furnace body is connected with an automatic bismuth ingot feeding assembly, and the automatic bismuth ingot feeding assembly comprises a bismuth liquid communicating pipe, a liquid level sensor, a feeding hopper, a bismuth ingot clamping piece and a bismuth ingot driving piece. Wherein one end of the bismuth liquid communicating pipe is communicated with the crucible, the other end of the bismuth liquid communicating pipe is connected and communicated with the bottom of the feeding hopper, the liquid level sensor is connected to the top of the bismuth liquid communicating pipe, the bottom of the liquid level sensor extends into the bismuth liquid communicating pipe, and the bismuth ingot clamping piece and the bismuth ingot driving piece are connected to the top of the feeding hopper. The automatic bismuth ingot feeding mechanism is added on the basis of an original furnace door, the effect of automatically feeding bismuth ingots without stopping the furnace is achieved, continuous operation can be achieved, and working efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bismuth oxide production equipment field, concretely relates to a novel bismuth oxide electric arc furnace. BACKGROUND

[0002] Plasma electric arc furnace is to utilize high temperature and high capacity generated by plasma to realize melting and processing of metal and other materials, wherein the plasma is a gaseous state containing free electrons and ions, which can reach very high temperature under the action of electric arc, and nanometer bismuth oxide can be produced through the plasma electric arc furnace. In actual production, the furnace door is opened first to send bismuth ingot into the smelting chamber of the electric arc furnace, then the furnace door is closed, high voltage is applied between the electrodes to generate electric arc, gas is ionized to form plasma, and the high temperature generated by the plasma melts the bismuth ingot, while blowing in oxygen to generate bismuth oxide. The foregoing feeding mode is carried out under the stop state (the electric arc must be closed when feeding), which greatly affects the work efficiency. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model aims to provide a novel bismuth oxide electric arc furnace with reasonable structure design.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A novel bismuth oxide electric arc furnace, comprising an upper furnace body and a lower furnace body, wherein the upper furnace body is connected with an upper electrode and a flue gas discharge pipe at the top, the lower furnace body has a crucible therein, the crucible is connected with a bottom electrode at the bottom, and a furnace door is installed at the front side of the upper furnace body, characterized in that a bismuth ingot automatic feeding assembly is connected to one side of the lower furnace body, the automatic feeding assembly comprises a bismuth liquid communication pipe, a liquid level sensor, a feeding hopper, a bismuth ingot clamping piece, and a bismuth ingot driving piece; wherein one end of the bismuth liquid communication pipe is in communication with the crucible, the other end is connected with the bottom of the feeding hopper in communication, and the liquid level sensor is connected to the top of the bismuth liquid communication pipe, the bottom of the liquid level sensor extends into the bismuth liquid communication pipe, the bismuth ingot clamping piece and the bismuth ingot driving piece are connected to the top of the feeding hopper, the bismuth ingot clamping piece cooperates with the bismuth ingot driving piece to clamp the bismuth ingot, and the driving force of the bismuth ingot driving piece on the bismuth ingot is greater than the clamping force of the bismuth ingot clamping piece on the bismuth ingot.

[0006] Further, the bismuth ingot clamping piece comprises an inclined support panel and a lower clamping roller, wherein the inclined support panel is fixed on the furnace body through a base, the inclination angle of the inclined support panel is consistent with the inclination angle of the feeding hopper, a U-shaped support frame is hinged to the position close to the bottom of the inclined support panel, a compression spring is connected between the bottom of the U-shaped support frame and the base and away from the hinged position of the U-shaped support frame and the inclined support panel, and a lower clamping roller is fixedly connected to the open side of the U-shaped support frame, and the lower clamping roller is located above the inclined support panel.

[0007] Further, the bismuth ingot driving member comprises a servo motor and a driving roller, wherein the driving roller is uniformly formed with a plurality of poking teeth on the outer periphery, the driving roller is located below the inclined support panel and the upper surface of the driving roller is flush with the upper surface of the inclined support panel, and the servo motor drives the driving roller to rotate.

[0008] Compared with the prior art, the bismuth ingot automatic feeding mechanism has the following beneficial effects:

[0009] The bismuth ingot automatic feeding mechanism is added to the original furnace door, so that the bismuth ingot can be automatically added without stopping the furnace, continuous operation is realized, and the work efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] Fig. 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Fig. 2 It is a side sectional view of the bismuth ingot automatic feeding mechanism;

[0012] Fig. 3 It is a front structure schematic diagram of the bismuth ingot automatic feeding mechanism;

[0013] 1, upper furnace body, 2, lower furnace body, 3, upper electrode, 4, crucible, 5, bottom electrode, 6, furnace door, 7, furnace base, 8, flue gas discharge pipe, 9, electric control box, 10, bismuth liquid communication pipe, 11, liquid level sensor, 12, feeding hopper, 13, bismuth ingot clamping piece, 13.1, inclined support panel, 13.2, lower clamping roller, 13.3, base, 13.4, U-shaped support frame, 13.5, compression spring, 13.6, lower pressing rod, 14, bismuth ingot driving member, 14.1, servo motor, 14.2, driving roller, 15, bismuth ingot. DETAILED DESCRIPTION

[0014] The utility model will be further described in combination with the drawings. The parts not described in detail below are all according to the prior art in the field and common knowledge.

[0015] As shown in Figs. 1-3 A novel bismuth oxide electric arc furnace of the utility model, including upper furnace body 1, lower furnace body 2, upper electrode 3, crucible 4, bottom electrode 5, furnace door 6, furnace base 7, flue gas discharge pipe 8, wherein the upper furnace body 1 top has the upper electrode 3's in the hole, the upper electrode 3 in the upper furnace body 1 with lower furnace body 2 constitutes the furnace cavity, in the upper furnace body 1 top fixedly connected and communicated with flue gas discharge pipe 8, in the upper furnace body 1 front face is connected with furnace door 6 according to conventional mode. Lower furnace body 2 is installed with crucible 4 according to conventional mode, and the bottom electrode 5 connecting end at the bottom of crucible 4 extends out of the bottom of lower furnace body 2, and the lower furnace body is fixed on the furnace base 7.

[0016] The bismuth ingot automatic feeding assembly is connected to one side of the lower furnace body 2. The bismuth ingot automatic feeding assembly comprises a bismuth liquid communication pipe 10, a liquid level sensor 11, a feeding hopper 12, a bismuth ingot clamping piece 13, and a bismuth ingot driving piece 14. The L-shaped bismuth liquid communication pipe 10 is located in the lower furnace body 2 and is connected to the crucible 4 at one end of the bismuth liquid communication pipe 10 and is connected to the bottom of the feeding hopper 12 at the other end. The bismuth liquid communication pipe 10 is connected to the liquid level sensor 11 at the upper position of the bismuth liquid communication pipe 10. The bottom probe of the liquid level sensor 11 extends into the bismuth liquid communication pipe 10 and is used to contact the bismuth liquid. When the liquid level in the bismuth liquid communication pipe 10 drops and the probe is separated from the liquid level, the bismuth ingot driving piece 14 drives the bismuth ingot to enter the feeding hopper 12 until the liquid level recontacts the probe, and then the driving is stopped. The feeding hopper 12 is an inclined channel. The bismuth ingot clamping piece 13 and the bismuth ingot driving piece 14 are connected to the top of the feeding hopper 12.

[0017] The bismuth ingot clamping piece 13 comprises an inclined support panel 13.1 and a lower clamping roller 13.2. The inclined support panel 13.1 is fixed on the platform on one side of the lower furnace body 2 through a base 13.3. The inclined angle of the inclined support panel 13.1 is consistent with the inclined angle of the feeding hopper 12 (the upper surface of the inclined support panel 13.1 is located on the same inclined surface as the inner wall on the lower side of the feeding hopper 12). A U-shaped support frame 13.4 is hinged to the inclined support panel 13.1 at a suitable position close to the bottom of the inclined support panel 13.1. A compression spring 13.5 is connected between the bottom of the U-shaped support frame 13.5 and the base 13.3 and away from the hinged position of the U-shaped support frame 13.4 and the inclined support 13.1. A lower clamping roller 13.2 is fixedly connected to the open side of the U-shaped support frame 13.4. The lower clamping roller 13.2 is located above the inclined support panel 13.1 and clamps the bismuth ingot placed on the surface of the inclined support panel 13.1. A lower pressing rod 13.6 is fixedly connected to one end of the U-shaped support frame 13.4 away from the lower clamping roller 13.2. By applying downward pressure to the lower pressing rod 13.6, the U-shaped support frame 13.4 is driven to rotate counterclockwise around the hinge point, and the lower clamping roller 13.2 moves away from the upper surface of the clamped bismuth ingot. At this time, the bismuth ingot can be clamped. When the external force is removed, the U-shaped support frame returns to the original position under the action of the compression spring, and the lower clamping roller presses the upper surface of the clamped bismuth ingot.

[0018] The bismuth ingot driving piece 14 is located below the clamped bismuth ingot. The bismuth ingot driving piece 14 comprises a servo motor 14.1 and a driving roller 14.2. The driving roller 14.2 is uniformly formed with a plurality of driving teeth 14.3 on the outer periphery. The driving roller 14.2 is located below the inclined support panel 13.1 (there is a gap between the driving roller 14.2 and the lower part of the inclined support panel 13.1) and the upper surface of the driving roller 14.2 is flush with the upper surface of the inclined support panel 13.1. The output shaft of the servo motor 14.1 can be directly coaxially fixedly connected to the driving roller or the power is finally output to the driving roller 14.2 through a conventional power transmission mechanism to control the rotation of the driving roller 14.2.

[0019] In use, when the probe of the liquid level sensor does not detect liquid, the servo motor drives the driving roller to rotate, thereby pushing the bismuth ingot clamped by the elastic member downward to enter the feeding hopper 12, and finally realizes feeding. When there is no bismuth ingot 15 on the inclined support panel 13.1, a person manually loads a supplementary bismuth ingot on the inclined support panel 13.1.

Claims

1. A novel bismuth oxide electric arc furnace comprising an upper furnace body, a lower furnace body, wherein there is a crucible inside the lower furnace body, characterized in that, The automatic feeding assembly is connected to one side of the lower furnace body, and comprises a bismuth liquid communication pipe, a liquid level sensor, a feeding hopper, a bismuth ingot clamping piece and a bismuth ingot driving piece.

2. The novel bismuth oxide electric arc furnace as claimed in claim 1, wherein, The bismuth ingot clamping piece comprises an inclined support panel and a lower clamping roller, wherein the inclined support panel is fixed on the furnace body through a base, the inclined angle of the inclined support panel is consistent with the inclined angle of the feeding hopper, a U-shaped support frame is hinged to the position close to the bottom of the inclined support panel, a compression spring is connected between the bottom of the U-shaped support frame and the base and away from the hinged position of the U-shaped support frame and the inclined support panel, and a lower clamping roller is fixedly connected to the open side of the U-shaped support frame and located above the inclined support panel.

3. The new bismuth oxide electric arc furnace according to claim 1 or 2, characterized in that, The bismuth ingot driving piece comprises a servo motor and a driving roller, wherein the outer periphery of the driving roller is uniformly formed with a poking tooth, the driving roller is located below the inclined support panel and the upper surfaces of the two are located on the same inclined surface, and the servo motor drives the driving roller to rotate.

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