Anti-erosion structure of hearth

Abstract

The utility model relates to the technical field of metallurgical devices, in particular to an anti-erosion structure of a hearth. According to the technical scheme, the device comprises a hearth and a protective cover, a protective layer is arranged at the inner bottom end of the hearth, a side plate is arranged on the side face of the outer top end of the hearth, a thermocouple is connected to the middle of the bottom surface of the side plate, the protective cover is connected to the side edge of the bottom surface of the side plate, and a baffle is rotationally installed in the middle of the outer front surface of the protective cover through a hinge; a clamping rod is clamped at one end of the baffle. The thermocouple capable of monitoring temperature is installed on the outer side face of the hearth, the erosion condition in the hearth is monitored in real time, the protective cover made of stainless steel materials is further installed on the outer surface of the thermocouple, anti-collision protection and anti-electromagnetic interference can be carried out on the thermocouple, the service life of the thermocouple is prolonged, and the monitoring accuracy is improved. And the protective layer made of the titanium dioxide material is arranged in the hearth, so that the service life of the blast furnace can be prolonged, and the comprehensive cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical devices, in particular to a furnace anti-corrosion structure. Background Art

[0002] With the development of ironmaking technology, the longevity of blast furnaces has attracted more and more attention. However, the hearth and bottom of blast furnaces have been working in harsh environments such as high temperature and high pressure for a long time, and have been eroded and damaged by high-temperature molten iron and thermal stress for a long time. They are eroded and damaged at a very fast speed. Since they cannot be maintained in the blast furnace like other parts of the blast furnace during operation, the erosion of the hearth is a decisive factor affecting the longevity of the blast furnace. Therefore, during the operation of the blast furnace, the erosion of the hearth and bottom has become a weak link in the longevity of the blast furnace. Since the blast furnace is a closed container involving high temperature and high pressure, it is difficult for people to know the actual erosion state of the hearth refractory in actual production, so major accidents of blast furnace hearth burnout occur from time to time. Utility Model Content

[0003] The purpose of the utility model is to provide a furnace anti-erosion structure to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace anti-erosion structure, comprising a furnace and a protective cover, a protective layer is provided at the inner bottom end of the furnace, a side panel is provided on the outer top side of the furnace, a thermocouple is connected in the middle of the bottom surface of the side panel, a protective cover is connected on the side edge of the bottom surface of the side panel, a baffle is rotatably installed in the middle of the outer front surface of the protective cover through a hinge, a clamping rod is clamped at one end of the baffle, and the clamping rod is rotatably installed at one end of the outer front surface of the protective cover.

[0005] When using a furnace cylinder anti-erosion structure in the technical solution, the staff connects an external power supply to the utility model and controls the operation of the utility model through the control panel. The staff pours the ore into the furnace cylinder through the opening on the top of the furnace roof, and starts heating and smelting after pouring it into the furnace cylinder. The external gas will enter the furnace cylinder through the air inlet pipe to assist combustion, and the generated exhaust gas will be discharged through the air outlet pipe. When the ore is smelted in the furnace cylinder, the high temperature generated will be sensed by the thermocouple installed on the outer side of the furnace cylinder, and the current temperature in the furnace cylinder will be measured to monitor the degree of erosion in the furnace cylinder. When the thermocouple is damaged, the staff can rotate the clamping rod to release the limit on the baffle. After releasing the limit, the staff rotates the baffle to open the protective cover, and repairs or directly replaces the thermocouple installed in the protective cover.

[0006] Preferably, a viewing window is provided in the middle of the baffle, so that the staff can see the internal thermocouple conditions from the outside of the protective cover.

[0007] Preferably, the protective cover is made of stainless steel. The protective cover made of stainless steel has the properties of high temperature resistance, corrosion resistance and electromagnetic interference resistance. By setting the protective cover, the thermocouple arranged inside it can be protected, achieving the effects of anti-collision protection and anti-electromagnetic interference.

[0008] Preferably, heat dissipation holes are provided on both sides of the outer side of the protective cover. The heat dissipation holes allow the thermocouples disposed therein to dissipate heat outwards through the holes, so that heat from the furnace to the protective cover can be dissipated through the heat dissipation holes after being conducted, thereby preventing the thermocouples from being in a closed state and causing measurement errors.

[0009] Preferably, an air inlet pipe is provided on the middle side of the furnace, and a furnace seat is provided on the outer bottom surface of the furnace. The air inlet pipe allows external gas to enter the furnace through the air inlet pipe, which helps combustion, so that the smelting ore in the furnace can be fully burned and heated, and the furnace seat allows the utility model to be stably placed on the ground for use.

[0010] Preferably, the outer top surface of the furnace is connected to a furnace body, a furnace roof is provided at the top of the furnace body, and an air outlet pipe is provided on the side of the furnace roof. The furnace roof allows ore for smelting metal to enter the furnace body and the furnace body through it, providing a place for feeding, and the air outlet pipe allows exhaust gas generated by combustion to be discharged through it.

[0011] Preferably, the protective layer is made of titanium dioxide material. The protective layer made of titanium dioxide material can protect the inner wall surface of the furnace, reduce the erosion degree of the inner wall surface of the furnace by high-temperature molten iron and thermal stress damage, extend the service life of the utility model, and reduce the overall cost.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model installs a thermocouple for monitoring temperature on the outer side of the furnace, and monitors the erosion in the furnace in real time. A protective cover made of stainless steel is also installed on the outer surface of the thermocouple, which can protect the thermocouple from collision and electromagnetic interference, improve the service life of the thermocouple and improve the accuracy of monitoring. In addition, a protective layer made of titanium dioxide is provided in the furnace, which can extend the life of the blast furnace and reduce the overall cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main appearance structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the furnace of the utility model;

[0016] Figure 3This is a schematic diagram of the front appearance structure of the protective cover of the utility model;

[0017] Figure 4 The figure is a schematic diagram of the rear appearance structure of the protective cover of the utility model.

[0018] In the figure: 1. air outlet pipe; 2. furnace top; 3. furnace body; 4. furnace cylinder; 5. furnace base; 6. protective cover; 7. side panel; 8. air inlet pipe; 9. protective layer; 10. thermocouple; 11. heat dissipation hole; 12. clamping rod; 13. baffle; 14. viewing window; 15. hinge. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model proposes a furnace cylinder anti-corrosion structure, including a furnace cylinder 4 and a protective cover 6, a protective layer 9 is provided at the inner bottom end of the furnace cylinder 4, a side panel 7 is provided on the outer top side of the furnace cylinder 4, a thermocouple 10 is connected in the middle of the bottom surface of the side panel 7, the side edge of the bottom surface of the side panel 7 is connected to the protective cover 6, a baffle 13 is rotatably installed in the middle of the outer front surface of the protective cover 6 through a hinge 15, a clamping rod 12 is clamped at one end of the baffle 13, and the clamping rod 12 is rotatably installed at one end of the outer front surface of the protective cover 6.

[0022] The staff connects an external power supply to the utility model and controls the operation of the utility model through the control panel. The staff pours the ore into the furnace cylinder 4 through the opening on the top of the furnace roof 2, and starts heating and smelting after pouring it into the furnace cylinder 4. The external gas will enter the furnace cylinder 4 through the air inlet pipe 8 to assist combustion, and the generated exhaust gas will be discharged through the air outlet pipe 1. When the ore is smelted in the furnace cylinder 4, the high temperature generated will be sensed by the thermocouple 10 installed on the outer side of the furnace cylinder 4, and the current temperature in the furnace cylinder 4 will be measured, and the degree of erosion in the furnace cylinder 4 will be monitored. When the thermocouple 10 is damaged, the staff can rotate the clamping rod 12 to release the limit on the baffle 13. After releasing it, the staff rotates the baffle 13 to open the protective cover 6, and repairs or directly replaces the thermocouple 10 installed in the protective cover 6.

[0023] Embodiment 2

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the utility model proposes an anti-corrosion structure for a furnace cylinder. Compared with the first embodiment, this embodiment also includes: a visual window 14 is provided in the middle of the baffle 13, the protective cover 6 is made of stainless steel, and heat dissipation holes 11 are penetrated on both sides of the outside of the protective cover 6, an air inlet pipe 8 is provided on the outer middle side of the furnace cylinder 4, and a furnace seat 5 is provided on the outer bottom surface of the furnace cylinder 4, the outer top surface of the furnace cylinder 4 is connected to the furnace body 3, the top of the furnace body 3 is provided with a furnace top 2, and the side of the furnace top 2 is provided with an air outlet pipe 1, and the protective layer 9 is made of titanium dioxide material.

[0025] In this embodiment, Figure 3 As shown, the installation of the viewing window 14 enables the staff to see the internal thermocouple 10 from the outside of the protective cover 6;

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the protective cover 6 made of stainless steel has the performance of high temperature resistance, corrosion resistance and electromagnetic interference resistance. By setting the protective cover 6, the thermocouple 10 arranged inside it can be protected, achieving the effect of anti-collision protection and anti-electromagnetic interference;

[0027] like Figure 3 and Figure 4 As shown, the heat dissipation hole 11 is opened so that the thermocouple 10 disposed therein can dissipate heat outward through this hole, so that the heat can be dissipated through the heat dissipation hole 11 after the furnace cylinder 4 is conducted to the protective cover 6, thereby preventing the thermocouple 10 from being in a closed state and causing measurement errors;

[0028] like Figure 1 and Figure 2 As shown, the arrangement of the air inlet pipe 8 allows external air to enter the furnace 4 through the air inlet pipe 8, which has a combustion-supporting effect, so that the smelting ore in the furnace 4 can be fully burned and heated, and the arrangement of the furnace base 5 allows the utility model to be stably placed on the ground for use;

[0029] like Figure 1 As shown, the furnace top 2 is arranged so that the ore used for smelting metal can enter the furnace body 3 and the furnace hearth 4 through this, providing a place for feeding materials, and the exhaust pipe 1 is arranged so that the exhaust gas generated by combustion can be discharged through this;

[0030] like Figure 2 As shown, the protective layer 9 made of titanium dioxide material can protect the inner wall surface of the furnace cylinder 4, reduce the erosion degree of the inner wall surface of the furnace cylinder 4 caused by high-temperature molten iron and thermal stress damage, extend the service life of the utility model, and reduce the overall cost.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace erosion protection structure, comprising a furnace (4) and a protective cover (6), characterized in that: A protective layer (9) is provided at the inner bottom end of the furnace cylinder (4), a side plate (7) is provided at the outer top side of the furnace cylinder (4), a thermocouple (10) is connected in the middle of the bottom surface of the side plate (7), a protective cover (6) is connected at the side edge of the bottom surface of the side plate (7), a baffle (13) is rotatably mounted in the middle of the outer front surface of the protective cover (6) via a hinge (15), a clamping rod (12) is clamped at one end of the baffle (13), and the clamping rod (12) is rotatably mounted at one end of the outer front surface of the protective cover (6).

2. The furnace anti-erosion structure according to claim 1, characterized in that: A viewing window (14) is provided in the middle of the baffle (13).

3. The furnace anti-erosion structure according to claim 1, characterized in that: The protective cover (6) is made of stainless steel.

4. The furnace anti-erosion structure according to claim 1, characterized in that: Heat dissipation holes (11) are formed through the two sides of the exterior of the protection cover (6).

5. The furnace anti-erosion structure according to claim 1, characterized in that: An air inlet pipe (8) is provided on the outer middle side of the furnace cylinder (4), and a furnace seat (5) is provided on the outer bottom surface of the furnace cylinder (4).

6. The furnace anti-erosion structure according to claim 1, characterized in that: The external top surface of the furnace cylinder (4) is connected to a furnace body (3), a furnace top (2) is provided at the top of the furnace body (3), and an air outlet pipe (1) is provided on the side of the furnace top (2).

7. The furnace anti-erosion structure according to claim 1, characterized in that: The protective layer (9) is made of titanium dioxide material.

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