Device for preventing hearth of metallurgical test molten drop furnace from deviating
By designing a device to prevent the furnace from being offset in the metallurgical test droplet furnace, the combined structure of the limiting ring and adjustment rod is used to solve the inclination problems caused by uneven compaction and material aging during filling and use of the refractory furnace, ensuring the accuracy of the experimental results.
Patent Information
- Application Number
- CN202420447116.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-08
AI Technical Summary
When the refractory furnace of the metallurgical test droplet furnace is filled with refractory insulation materials, due to uneven compaction, or the material aging during use, resulting in uneven thermal expansion force, causing the upper mouth of the furnace to tilt and offset, affecting the airtightness and the accuracy of the experimental results.
A device for preventing the furnace from being offset is designed, including a limiting ring and an adjustment rod. The limiting ring is installed on the refractory furnace tube. The adjustment rod drives the adjustment rod to rotate through the adjustment nut to make it abut with the inner wall of the furnace shell, ensuring that the center line of the refractory furnace is consistent with the center line of the furnace shell.
It effectively prevents the tilt shift of the refractory furnace, maintains the airtightness of the droplet furnace, and ensures the accuracy of the experimental results.
Smart Images
Figure CN222670664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metallurgical experiments, in particular to a device for preventing the hearth of a metallurgical experiment dripping furnace from deflecting. Background Art
[0002] The metallurgical test dripping furnace is mainly used to detect important parameters of iron ore such as softening temperature, softening range, melting temperature, melting range, dripping temperature, pressure difference of reducing gas, etc. It is an important testing equipment for evaluating the blast furnace smelting performance of sintered ore and pelletized ore. The high temperature soft melting performance of iron ore is a very important indicator in evaluating the comprehensive smelting performance of iron ore.
[0003] The existing problems of the metallurgical test droplet furnace are: first, when filling the refractory insulation material, the uneven compaction will cause the upper opening of the refractory furnace of the droplet furnace to tilt and deviate; second, after a period of use, the refractory insulation material filled will partially age, resulting in uneven thermal expansion of the refractory furnace, causing the upper opening of the refractory furnace of the droplet furnace to tilt and deviate. Once the upper opening of the refractory furnace of the droplet furnace tilts and deviates, the airtightness of the droplet furnace is affected, and then the accuracy of the experimental results is affected. Utility Model Content
[0004] The utility model aims to provide a device for preventing the furnace of a metallurgical test dripping furnace from deflecting, so as to solve the problem of tilting of the refractory furnace caused by uneven filling and extrusion force during the installation of the refractory furnace of the dripping furnace and uneven thermal expansion force of the refractory furnace due to local aging of the refractory insulation material filled during the use of the dripping furnace.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A device for preventing the furnace of a metallurgical test drip furnace from deflecting is installed between a refractory furnace tube and a furnace shell, and comprises a limit ring, a plurality of connecting seats are evenly arranged along the circumferential direction on the outer circumference of the limit ring, and the plurality of connecting seats are in the same horizontal plane; an adjusting rod is screwed on each connecting seat, and an adjusting nut is fixed on the adjusting rod; when in use, the limit ring is sleeved on the refractory furnace tube, and the adjusting nut is rotated to drive the adjusting rod to rotate, so that the end of the adjusting rod abuts against the inner wall of the furnace shell.
[0007] Compared with the prior art, the utility model has the following beneficial effects:
[0008] When in use, the device for preventing the furnace from deflecting is placed on the upper opening of the refractory furnace. Due to the limitation of the adjusting rod, the center line of the refractory furnace can always be kept consistent with the center line of the furnace shell. The problem of the refractory furnace tilting caused by uneven filling and extrusion force during the installation and filling of refractory insulation materials in the refractory furnace of the molten drop furnace and uneven thermal expansion force of the refractory furnace caused by local aging of the refractory insulation materials during the use of the molten drop furnace is solved. The utility model can effectively solve the tilting and deflection of the upper opening of the refractory furnace of the molten drop furnace and improve the accuracy of the experimental results. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of the internal structure of a dripping furnace in the prior art.
[0010] Figure 2 The utility model is a schematic diagram of the structure of a device for preventing the furnace of a metallurgical test dripping furnace from deflecting.
[0011] In the figure, 1-furnace shell, 2-refractory furnace tube, 3-graphite furnace tube, 4-graphite heater, 5-graphite crucible, 6-refractory insulation material layer, 7-exhaust sealing cap, 8-melting drop furnace upper cover, 9-limiting ring, 10-connecting seat, 11-adjusting rod, 12-adjusting nut. DETAILED DESCRIPTION
[0012] The utility model is further explained below in conjunction with the accompanying drawings.
[0013] The existing dripping furnace of Jiugang adopts internal heating method. The specific structure is as follows: Figure 1 As shown, it includes a furnace shell 1, a refractory furnace tube 2 is installed in the furnace shell 1, and refractory heat-insulating materials are filled between the refractory furnace tube 2 and the furnace shell 1; a graphite heater 4 is placed in the refractory furnace tube 2, a graphite furnace tube 3 is installed in the graphite heater 4, a graphite crucible 5 for presenting samples is placed in the graphite furnace tube 3, an exhaust sealing cap 7 is screwed on the top of the graphite furnace tube 3, and the exhaust sealing cap 7 cooperates with the drip furnace upper cover 8 buckled on the top of the furnace shell 1 for sealing.
[0014] Since the above-mentioned drip furnace adopts an internal heating method, in order to prevent the temperature from dropping too quickly and affecting the test results, refractory insulation materials are generally filled between the refractory furnace tube 2 and the furnace shell 1. However, there are some problems when filling the refractory insulation materials and when using them after filling, mainly including: 1. When filling the refractory insulation materials, due to uneven compaction, the upper opening of the refractory furnace of the drip furnace will be tilted and offset; 2. After a period of use, the filled refractory insulation materials are locally aged and deformed, resulting in uneven thermal expansion of the refractory furnace, causing the upper opening of the refractory furnace of the drip furnace to tilt and offset. Once the upper opening of the refractory furnace of the drip furnace tilts and offsets, it will cause the upper opening of the graphite furnace tube to be skewed, and then the exhaust sealing cap and the cover body will not be sealed tightly, affecting the airtightness of the drip furnace and the accuracy of the experimental results.
[0015] To this end, the utility model discloses a device for preventing the furnace of a metallurgical test dripping furnace from deflecting, so as to solve the problems existing in the above-mentioned background technology.
[0016] The device is installed between the refractory furnace tube and the furnace shell. Figure 2 As shown, it includes a limit ring 9, and four connecting seats 10 are evenly arranged along the circumference of the limit ring 9, and the four connecting seats 10 are in the same horizontal plane; an adjusting rod 11 is screwed on each connecting seat 10, and an adjusting nut 12 is welded and fixed on the adjusting rod 11.
[0017] When in use, since the inner diameter of the limit ring 9 is 2mm larger than the outer diameter of the refractory furnace tube, the limit ring 9 can be just sleeved on the refractory furnace tube, and the adjusting nut 12 is turned to drive the adjusting rod 11 to rotate so that the end of the adjusting rod 11 abuts against the inner wall of the furnace shell. To prevent slipping, a groove can be processed in advance at the abutment between the adjusting rod 11 and the inner wall of the furnace shell 1; since the furnace shell 1 is cylindrical and the four adjusting rods 1 are the same length, when the limit ring 9 is sleeved on the refractory furnace tube 2 and each adjusting rod 11 abuts against the furnace shell 1, it can ensure that the center line of the refractory furnace tube is always consistent with the center line of the furnace shell, and then fill it with refractory insulation material.
[0018] No matter when filling or using, due to the limiting effect of the utility model, the upper opening of the refractory furnace tube will not be offset, thus ensuring the sealing of the drip furnace and the accuracy of the experimental results.
Claims
1. A device for preventing the hearth of a metallurgical test dripping furnace from deflecting, characterized in that: The device is installed between a refractory furnace tube and a furnace shell, and comprises a limiting ring (9). A plurality of connecting seats (10) are evenly arranged along the circumferential direction of the outer circumference of the limiting ring (9), and the plurality of connecting seats (10) are located in the same horizontal plane. An adjusting rod (11) is screwed onto each connecting seat (10), and an adjusting nut (12) is fixed onto the adjusting rod (11). When in use, the limiting ring (9) is sleeved onto the refractory furnace tube, and the adjusting nut (12) is rotated to drive the adjusting rod (11) to rotate, so that the end of the adjusting rod (11) abuts against the inner wall of the furnace shell.
2. A device for preventing the furnace of a metallurgical test dripping furnace from deflecting as claimed in claim 1, characterized in that: The inner diameter of the limiting ring (9) is 2 mm larger than the outer diameter of the refractory furnace tube.
3. A device for preventing the furnace of a metallurgical test droplet furnace from deflecting as claimed in claim 1, characterized in that: The lengths of the adjustment rods (11) screwed onto each connection seat (10) are equal.