Automatic sand adding device of ferromolybdenum smelting furnace

Abstract

The utility model belongs to the technical field of ferromolybdenum smelting furnaces, and particularly discloses an automatic sand adding device of a ferromolybdenum smelting furnace, which comprises a sand storage bin, the sand storage bin is arranged on a bin platform supported by a plurality of gantries, a discharging pipe at the lower part of the sand storage bin is provided with a discharger, the discharger can open and close the discharging pipe, and the discharging pipe is provided with a plurality of feeding holes. A sand adding module is arranged below the unloader, the feeding end of the sand adding module is connected with the discharging end of the discharging pipe, the discharging end of the sand adding module faces the gap between the smelting furnace barrel and the sand adding barrel, and the sand adding module can evenly guide sand in a sand storage bin into the gap between the smelting furnace barrel and the sand adding barrel. Sand stacking mechanization is achieved, the uniformity of sand stacking is guaranteed, the furnace leakage risk caused by the fact that local stacked sand is thin is avoided, and the reliability of the smelting furnace is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ferromolybdenum smelting furnaces, and particularly discloses an automatic sand adding device for a ferromolybdenum smelting furnace. Background Art

[0002] Application No. 201410728927.7 discloses an assembled ferromolybdenum smelting furnace and its assembly method, which includes a furnace base and a smelting furnace drum, a cushion layer is arranged in the furnace base, the smelting furnace drum is vertically arranged on the cushion layer, a refractory layer is arranged on the inner wall of the smelting furnace drum, and a refractory isolation tube is arranged between the ferromolybdenum raw material on the cushion layer and the refractory layer. The refractory isolation tube is made of sand. The ferromolybdenum smelting furnace can prevent the melt from flowing out, effectively ensuring that the smelting furnace is safe and controllable during the smelting reaction process. It also discloses an assembly method of the assembled ferromolybdenum smelting furnace. The assembly method comprises the following steps: filling sand into a furnace base to form a cushion layer, hoisting a smelting furnace barrel with a refractory layer on the inner wall onto the cushion layer, and vertically arranging the smelting furnace barrel on the cushion layer; hoisting a sand adding barrel into the smelting furnace barrel, wherein the lower part of the sand adding barrel is a cylindrical structure, and the upper end is gathered to form a necking, and the sand adding barrel is vertically placed on the cushion layer, and sand is filled between the sand adding barrel and the refractory layer of the smelting furnace barrel to form a refractory isolation barrel, filling molybdenum-ferro raw material into the sand adding barrel, and hoisting the sand adding barrel from the smelting furnace barrel. The assembly method is convenient and quick.

[0003] During the smelting of ferromolybdenum, manual sand stacking is still used to fill sand between the sand adding tube and the refractory layer of the smelting furnace tube to form a refractory isolation tube. This has the following problems: 1) When using the manual operation method, workers enter the furnace tube to work. The furnace tube is 2.6 meters deep, and there are great safety hazards in the operation. The workers' workload is also very heavy; 2) The manual sand stacking method cannot fully guarantee the uniformity of the sand stack. There may be local thin sand stacks, which may cause the risk of furnace leakage. Summary of the Invention

[0004] In order to solve the problems in the background technology, the utility model discloses an automatic sand adding device for a molybdenum-ferro smelting furnace, including a sand storage silo, a discharger and a sand adding module, to realize the mechanization of sand stacking, ensure the uniformity of the sand stacking, avoid the risk of furnace leakage caused by thin local sand stacking, and improve the reliability of the smelting furnace.

[0005] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solutions:

[0006] A molybdenum-iron smelting furnace automatic sand-feeding device is used for uniformly filling sand into the gap between the smelting furnace barrel and the sand-feeding tube, comprising a sand storage silo, which is arranged on a silo platform supported by a plurality of gantries, and a discharger is provided on the discharge pipe at the lower part of the sand storage silo, and the discharger can open and close the discharge pipe, and a sand-feeding module is provided below the discharger, the feed end of the sand-feeding module is connected with the discharge end of the discharge pipe, and the discharge end of the sand-feeding module faces the gap between the smelting furnace barrel and the sand-feeding tube, and the sand-feeding module can uniformly introduce the sand in the sand storage silo into the gap between the smelting furnace barrel and the sand-feeding tube.

[0007] Furthermore, the automatic sand adding device of the molybdenum-ferro smelting furnace is provided with a plurality of weighing modules between the sand storage silo and the silo platform, and the weighing modules are used for weighing the weight of the sand material in the sand storage silo in real time.

[0008] Furthermore, the automatic sand adding device of the molybdenum-ferro smelting furnace, the sand adding module includes a sand-distributing fluid, the sand-distributing fluid includes an inner cone and an outer cone arranged inside and outside, and a channel for sand circulation is provided between the outer cone and the inner cone, the inlet at the upper end of the channel is connected to the discharge end of the discharge pipe, and the outlet at the lower end of the channel is toward the gap between the smelting furnace barrel and the sand adding barrel.

[0009] Furthermore, the automatic sand adding device of the molybdenum-ferro smelting furnace, the sand adding module includes an inclined sand adding pipe, the upper end of the sand adding pipe is rotatably connected to the discharge end of the discharge pipe, and the lower end of the sand adding pipe extends toward the gap between the smelting furnace cylinder and the sand adding cylinder.

[0010] Furthermore, in the automatic sand adding device of the molybdenum-ferro smelting furnace, the outer cone is a hollow conical structure with open ends, the inner cone is a frustum structure with closed ends, the outer diameter of the lower end of the outer cone is not larger than the inner diameter of the smelting furnace barrel, and the outer diameter of the lower end of the inner cone is not smaller than the outer diameter of the necked-down upper end of the sand adding barrel.

[0011] Furthermore, the automatic sand adding device of the molybdenum-ferro smelting furnace is provided with a first gear on the upper end of the sand adding pipe, the first gear is meshedly connected with a second gear, and the second gear is driven by a motor provided on the gantry.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model discloses an automatic sand adding device for a molybdenum-iron smelting furnace, comprising a sand storage bin, a discharger and a sand adding module. The feeding end of the sand adding module is connected to the discharging end of a discharging pipe, and the discharging end of the sand adding module faces the gap between the smelting furnace drum and the sand adding cylinder. The sand adding module can evenly introduce the sand in the sand storage bin into the gap between the smelting furnace drum and the sand adding cylinder, thereby realizing mechanized sand piling, ensuring the uniformity of the sand piling, avoiding the risk of furnace leakage caused by thin local sand piling, and improving the reliability of the smelting furnace.

[0014] The utility model discloses an automatic sand-feeding device for a molybdenum-ferro smelting furnace. Two types of sand-feeding modules are designed, namely a sand-distributing fluid and a sand-feeding pipeline. The two types of sand-feeding modules cooperate with a sand storage silo, a discharger and a weighing module to realize mechanized sand stacking, ensure the uniformity of the sand stack, avoid the risk of furnace leakage caused by thin local sand stacking, and improve the reliability of the smelting furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structure diagram of the automatic sand adding device for molybdenum iron smelting furnace of the utility model Figure 1 ;

[0016] Figure 2 This is a three-dimensional schematic diagram of the automatic sand adding device for molybdenum iron smelting furnace of the utility model. Figure 2 ;

[0017] Figure 3 yes Figure 1 Schematic diagram of the top view of the sand adding device;

[0018] Figure 4 yes Figure 1 Schematic diagram of the structure of the sand adding device from an upward perspective;

[0019] Figure 5 yes Figure 2 Schematic diagram of the enlarged structure of the part A in the middle;

[0020] In the above figure: 1-silo platform; 2-sand storage silo; 3-discharger; 4-sand distribution fluid; 4.1-outer cone; 4.2-inner cone; 4.3-connecting plate; 5-gantry; 6-weighing module; 7-smelting furnace; 8-sand feeding cylinder; 9-sand feeding pipeline; 10-first gear; 11-second gear. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.

[0022] Combined with attachment Figure 1-5, the utility model is described in detail about an automatic sand feeding device for molybdenum-ferro smelting furnace, which is used to evenly fill sand into the gap between the smelting furnace drum and the sand feeding tube, including a sand storage bin 2, the lower end of which is a conical structure and is provided with a vibrating motor. Through the setting of the vibrating motor, the sand flows downward conveniently, thereby improving the feeding efficiency. The sand storage bin 2 is arranged on a bin platform 1 supported by a number of door frames 5, and the bin platform 1 is erected above the smelting furnace drum, and a discharger 3 is provided on the discharge pipe at the lower part of the sand storage bin 2, and the discharger 3 is capable of opening and closing the discharge pipe. It should be noted here that the discharger 3 capable of opening and closing the discharge pipe is a prior art, so its structure is not described in detail. A sand feeding module is provided below the discharger 3, and the feeding end of the sand feeding module is connected to the outlet end of the discharge pipe. The material end is connected, and the discharge end of the sand adding module is toward the gap between the smelting furnace barrel 7 and the sand adding tube 8. The sand adding module can evenly introduce the sand material in the sand storage bin 2 into the gap between the smelting furnace barrel 7 and the sand adding tube 8. When working, first put the sand adding tube 8 into the smelting furnace barrel 7, move the smelting furnace barrel 7 to the sand adding position, start the discharger 3, and the sand stored in the sand storage bin 2 is added to the gap between the smelting furnace barrel 7 and the sand adding tube 8 through the sand adding module to control the sand discharge amount. When the sand addition amount reaches the set value, the discharger 3 is closed and the sand addition is ended. After the feeding is completed, the smelting furnace barrel 7 is moved to the position of the sand core taking tube, and the sand adding tube 8 is taken out to complete the feeding process. The automatic sand adding device for molybdenum-iron smelting furnace of the utility model is used to realize the mechanization of sand stacking, reduce the labor intensity of sand stacking, improve labor efficiency, and ensure the uniformity of sand stacking.

[0023] As an optional design, the automatic sand adding device of the molybdenum-ferro smelting furnace is preferably provided with a plurality of weighing modules 6 between the sand storage silo 2 and the silo platform 1. The weighing modules 6 are used to weigh the weight of the sand material in the sand storage silo 2 in real time. The weighing modules 6 can accurately control the amount of sand output from the sand storage silo 2. It should be noted that the weighing modules 6 are prior art, so their structure will not be described in detail.

[0024] As an optional design, the automatic sand adding device of the molybdenum-iron smelting furnace is preferred, and the sand adding module includes a sand-distributing fluid 4, and the sand-distributing fluid 4 includes an inner cone 4.2 and an outer cone 4.1 provided with inner and outer outer casings. The outer cone 4.1 is a hollow conical structure with open ends, and the inner cone 4.2 is a frustum structure with closed ends. The outer diameter of the lower end of the outer cone 4.1 is not greater than the inner diameter of the smelting furnace tube 7, and the outer diameter of the lower end of the inner cone 4.2 is not less than the outer diameter of the upper end of the sand adding tube 8. .2 and the outer cone 4.1 are provided with several connecting plates 4.3, and a sand supply circulation channel is provided between the outer cone 4.1 and the inner cone 4.2. The inlet at the upper end of the channel is connected to the discharge end of the discharge pipe, and the outlet at the lower end of the channel is directed toward the gap between the smelting furnace 7 and the sand adding tube 8. When adding sand, the sand stored in the sand storage silo 2 is evenly added to the gap between the smelting furnace 7 and the sand adding tube 8 through the sand supply circulation channel between the outer cone 4.1 and the inner cone 4.2, so as to ensure the uniformity of the sand pile.

[0025] As an optional design, the automatic sand adding device of the molybdenum-ferro smelting furnace is preferred, and the sand adding module includes an inclined sand adding pipe 9, the upper end of the sand adding pipe 9 is rotatably connected to the discharge end of the discharge pipe, and the lower end of the sand adding pipe 9 extends toward the gap between the smelting furnace drum 7 and the sand adding tube 8. A first gear 10 is sleeved on the upper end of the sand adding pipe 9, and the first gear 10 is meshed with a second gear 11. The second gear 11 is driven by a reduction motor arranged on the gantry 5. When working, the reduction motor drives the second gear 11 to rotate, and the second gear 11 drives the upper end of the sand adding pipe 9 to rotate relative to the discharge end of the discharge pipe through the first gear 10, and the lower end of the sand adding pipe 9 moves above the gap between the smelting furnace drum 7 and the sand adding tube 8. At the same time, the discharger 3 is started, and the sand stored in the sand storage bin 2 is added into the gap between the smelting furnace drum 7 and the sand adding tube 8 through the sand adding pipe 9. By setting the sand output of the sand storage bin 2 and the rotation speed of the sand adding pipe 9, the uniformity of the sand pile is ensured.

[0026] The working process of this utility model is as follows:

[0027] During operation, the sand adding tube 8 is first placed into the smelting furnace tube 7, the smelting furnace tube 7 is moved to the sand adding position, the discharger 3 is started, and the sand stored in the sand storage bin 2 is added to the gap between the smelting furnace tube 7 and the sand adding tube 8 through the sand supply channel between the outer cone 4.1 and the inner cone 4.2 or the sand adding pipe 9. The sand output of the sand storage bin 2 is accurately controlled by the weighing module 6. When the added sand amount reaches the set value, the discharger 3 is closed and the sand adding is ended. After the feeding is completed, the smelting furnace tube 7 is moved to the position of the sand core taking tube, the sand adding tube 8 is taken out, and the feeding process is completed. The automatic sand adding device for molybdenum-iron smelting furnace of the utility model is used to realize the mechanization of sand piling, reduce the labor intensity of sand piling, improve labor efficiency, ensure the uniformity of sand piling, avoid the risk of furnace leakage due to thin local sand piling, and improve the reliability of the smelting furnace.

[0028] The above description is only an application implementation method of the present utility model, but the protection scope of the present utility model is not limited to this, and the scope of rights of the present utility model cannot be limited by this. Any equivalent changes made according to the technical solution of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An automatic sand-feeding device for a molybdenum-ferrometallurgical furnace, used for uniformly filling sand into the gap between the smelting furnace drum and the sand-feeding drum, characterized by: It includes a sand storage silo, which is arranged on a silo platform supported by several gantries. A discharger is arranged on the discharge pipe at the lower part of the sand storage silo, and the discharger can open and close the discharge pipe. A sand adding module is arranged below the discharger, and the feed end of the sand adding module is connected with the discharge end of the discharge pipe. The discharge end of the sand adding module faces the gap between the smelting furnace and the sand adding cylinder. The sand adding module can evenly introduce the sand in the sand storage silo into the gap between the smelting furnace and the sand adding cylinder.

2. The automatic sand adding device for ferromolybdenum smelting furnace according to claim 1, characterized in that: A plurality of weighing modules are provided between the sand storage silo and the silo platform, and the weighing modules are used to weigh the weight of the sand material in the sand storage silo in real time.

3. The automatic sand adding device for ferromolybdenum smelting furnace according to claim 2, characterized in that: The sand adding module includes a sand-distributing fluid, and the sand-distributing fluid includes an inner cone and an outer cone arranged inside and outside the outer cone. A channel for sand circulation is provided between the outer cone and the inner cone. The inlet at the upper end of the channel is connected to the discharge end of the discharge pipe, and the outlet at the lower end of the channel faces the gap between the smelting furnace and the sand adding tube.

4. The automatic sand adding device for ferromolybdenum smelting furnace according to claim 2, characterized in that: The sand adding module includes an inclined sand adding pipe, the upper end of the sand adding pipe is rotatably connected to the discharge end of the discharge pipe, and the lower end of the sand adding pipe extends toward the gap between the smelting furnace and the sand adding cylinder.

5. The automatic sand adding device for ferromolybdenum smelting furnace according to claim 3, characterized in that: The outer cone is a hollow conical structure with open ends, and the inner cone is a frustum structure with closed ends. The outer diameter of the lower end of the outer cone is not larger than the inner diameter of the smelting furnace, and the outer diameter of the lower end of the inner cone is not smaller than the outer diameter of the upper end of the sand adding tube.

6. The automatic sand adding device for ferromolybdenum smelting furnace according to claim 4, characterized in that: The upper end of the sand adding pipe is sleeved with a first gear, the first gear is meshedly connected with a second gear, and the second gear is driven and connected to a motor arranged on the door frame.

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