Sealing device for blanking pipe of submerged arc furnace

Abstract

The submerged arc furnace discharging pipe sealing device comprises a furnace body, a filling opening is formed in the upper end face of the furnace body, a discharging pipe is inserted into the filling opening, the discharging pipe comprises an upper pipe body and a lower pipe body, a first fixing ring is formed at one end of the lower pipe body, a through hole is formed in the first fixing ring, and a first clamping groove is formed in the bottom of the first fixing ring; the upper end face of the furnace body is connected with a fixing bolt, the upper pipe body and the lower pipe body are connected through a mica ring, the upper end face of the mica ring is provided with a third clamping groove, the lower end face of the mica ring is provided with a second clamping groove, and the lower end face of the upper pipe body is provided with a third clamping ring. The lower pipe body is connected with the first clamping ring in an inserted mode through the first clamping groove, the sealing performance of connection between the lower pipe body and the furnace body is improved, the upper pipe body and the lower pipe body are insulated and isolated through the mica ring, electric arcs generated when the discharging pipe is conducted out of the furnace body to be heated are prevented, and the safety of discharging pipe filler is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of production of submerged arc furnaces, and in particular relates to a sealing device for a feeding pipe of a submerged arc furnace. Background Art

[0002] A submerged arc furnace is a high-temperature melting furnace that smelts metals by electric arc or resistance heating. As the smelting production continues, the furnace must be continuously replenished with fillers. In actual production, a filler pipe is usually inserted into the furnace body through the filler port for filling.

[0003] The actual problem encountered in the filling process is that there is a gap between the filling pipe and the filling port. The furnace gas in the furnace body can easily leak out from the gap and cause environmental pollution. The leakage of furnace gas through the gap will cause the combustion of combustible gases such as CO in the furnace gas, causing the furnace temperature to rise and even cause an explosion accident. In addition, the material guide pipe is made of metal, which can easily conduct electric arcs in the furnace and cause damage to the filling equipment and personnel. Utility Model Content

[0004] The present application provides a sealing device for a feed pipe of an electric arc furnace, which is used to seal between a feed port and a sealing pipe to prevent furnace gas from leaking out and causing danger.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A sealing device for a feed pipe of an ore-fired furnace comprises a furnace body, an upper end surface of the furnace body is provided with a filling port, a feed pipe is inserted into the filling port, the feed pipe comprises an upper tube body and a lower tube body, a first fixing ring is formed at one end of the lower tube body, a through hole is provided on the first fixing ring, a first clamping groove is provided at the bottom of the first fixing ring, a second clamping ring is connected to the upper end of the first fixing ring, a first clamping ring is provided on the outer ring of the filling port, a fixing bolt is connected to the upper end surface of the furnace body, the upper tube body and the lower tube body are connected via a mica ring, a third clamping groove is provided on the upper end surface of the mica ring, a second clamping groove is provided on the lower end surface of the mica ring, and a third clamping ring is provided on the lower end surface of the upper tube body.

[0007] In one embodiment of the present application, a valve is installed on the tube body of the upper tube body.

[0008] In one embodiment of the present application, a funnel is inserted into the upper port of the upper tube body.

[0009] In one embodiment of the present application, an insulating bracket is connected to the side of the feed pipe.

[0010] In one embodiment of the present application, an inclined buffer plate is connected to the inner wall of the lower tube body.

[0011] In one embodiment of the present application, a counterweight block is connected to the outer side of the bottom end of the upper tube body.

[0012] In one embodiment of the present application, the first card slot, the second card slot and the third card slot are filled with sealant.

[0013] In summary, the technical solution proposed in this application includes the following beneficial technical effects: the lower tube body is plugged into the first clamping ring through the first clamping groove, which increases the contact area between the lower tube body and the furnace body, which is beneficial to improving the sealing of the connection between the lower tube body and the furnace body. The first clamping ring plays a role of fixing and limiting the lower tube body, preventing the lower tube body from shaking at the filling port, which is beneficial to improving the stability of the lower tube body. Furthermore, the fixing bolt passes through the through hole and is tightened with the nut, which can make the first clamping groove and the first clamping ring plug more tightly to improve the sealing of the lower tube body at the filling port, prevent the furnace gas from leaking from the gap between the lower tube body and the filling port and causing danger, which is beneficial to improving the safety of the lower tube filling. In addition, the upper tube body is connected to the lower tube body through a mica ring, and the mica ring plays an insulating role, insulating and isolating the upper tube body from the lower tube body, preventing the arc generated when the lower tube is led out of the furnace body for heating, which is beneficial to improving the safety of the lower tube filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 A schematic diagram of the three-dimensional structure of a sealing device for a feed pipe of an electric arc furnace provided in one embodiment of the present application;

[0016] Figure 2 A schematic diagram of the disassembled structure of a sealing device for a feed pipe of a submerged arc furnace provided in one embodiment of the present application;

[0017] Figure 3 A schematic diagram of the disassembled cross-sectional structure of a sealing device for a feed pipe of an ore-fired furnace provided in one embodiment of the present application;

[0018] Figure 4 A schematic diagram of the three-dimensional structure of a sealing device for a feed pipe of an electric arc furnace provided in one embodiment of the present application;

[0019] In the figure: furnace body-1, fixing bolt-11;

[0020] Packing port-2, first clamp ring-21;

[0021] Feeding tube-3, upper tube body-31, third clamping ring-311, valve-312, counterweight block-313, lower tube body-32, first fixing ring-321, through hole-322, first clamping groove-323, second clamping ring-324, buffer plate-33;

[0022] Mica ring-4, third card slot-41, second card slot-42;

[0023] Funnel - 5;

[0024] Insulation bracket-6. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0026] It should be noted that in the description of the present application, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0027] The terms "installed", "connected" and "connected" in this application should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.

[0028] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0029] This embodiment provides a sealing device for a feed pipe of an electric arc furnace, Figure 1-Figure 4As shown, it includes a furnace body 1, a filling port 2 is provided on the upper end surface of the furnace body 1, a feeding tube 3 is inserted in the filling port 2, the feeding tube 3 includes an upper tube body 31 and a lower tube body 32, a first fixing ring 321 is formed at one end of the lower tube body 32, a through hole 322 is provided on the first fixing ring 321, a first clamping groove 323 is provided at the bottom of the first fixing ring 321, a second clamping ring 324 is connected to the upper end of the first fixing ring 321, a first clamping ring 21 is provided on the outer ring of the filling port 2, a fixing bolt 11 is connected to the upper end surface of the furnace body 1, the upper tube body 31 and the lower tube body 32 are connected by a mica ring 4, a third clamping groove 41 is provided on the upper end surface of the mica ring 4, a second clamping groove 42 is provided on the lower end surface of the mica ring 4, and a third clamping ring 311 is provided on the lower end surface of the upper tube body 31.

[0030] In the above embodiment, a first clamping groove 323 is provided at the bottom of the first fixing ring 321, and a first clamping ring 21 is provided on the outer ring of the filling port 2. The lower tube body 32 is plugged into the first clamping ring 21 through the first clamping groove 323. The clamping ring and the clamping groove are plugged into each other, thereby increasing the contact area between the lower tube body 32 and the furnace body 1, which is beneficial to improving the sealing of the connection between the lower tube body 32 and the furnace body 1. The first clamping ring 21 plays a role of fixing and limiting the lower tube body 32 to prevent the lower tube body 32 from shaking at the filling port 2 to create a gap and cause leakage of furnace gas, which is beneficial to improving the stability of the lower tube body 32. Furthermore, a fixing bolt 11 is connected to the upper end surface of the furnace body 1, and a through hole 322 is opened on the first fixing ring 321 of the lower tube body 32. The fixing bolt 11 passes through the through hole 322 and is tightened with a nut, so that the first clamping groove 323 and the first clamping ring 21 can be inserted more tightly to improve the sealing and stability of the lower tube body 32 at the filling port 2, and prevent the furnace gas from leaking from the gap between the lower tube body 32 and the filling port 2 to cause danger, which is beneficial to improving the safety of filling the lower tube 3. In addition, the upper tube body 31 is connected to the lower tube body 32 through the mica ring 4. Mica is a mineral material with excellent insulation performance and high temperature resistance. The mica ring 4 is made of mica material and has good insulation performance and high temperature resistance. The mica ring 4 plays an insulating role. The upper end face of the mica ring 4 is provided with a third groove 41, which is plugged into the third clamping ring 311 provided on the lower end face of the upper tube body 31. The lower end face of the mica ring 4 is provided with a second groove 42, which is plugged into the second clamping ring 324 connected to the upper end of the first fixing ring 321, thereby realizing the insulation and isolation connection between the upper tube body 31 and the lower tube body 32 through the mica ring 4, preventing the lower tube 3 from transmitting the arc generated during heating in the furnace body 1, which is beneficial to improving the safety of the filler of the lower tube 3.

[0031] In one embodiment of the present application, see Figure 4 As shown, a valve 312 is installed on the tube body of the upper tube body 31.

[0032] In the above embodiment, the valve 312 installed on the tube body of the upper tube body 31 can be used to control the flow of the filler in the discharge tube 3. When the filler in the discharge tube 3 is too little, the furnace gas may overflow from the gaps between the fillers. The discharge tube 3 can be closed by closing the valve 312 to prevent the furnace gas from leaking through the discharge tube 3, which is beneficial to improve the safety of the discharge tube 3.

[0033] In one embodiment of the present application, refer to Figure 4 As shown, a funnel 5 is plugged into the upper end of the upper tube body 31 .

[0034] In the above embodiment, the funnel 5 increases the cross-section of the feed port to help pour the filler into the discharge pipe 3, thereby achieving the concentration and diversion of the filler, ensuring that the material can smoothly pass through the discharge pipe 3 into the furnace body 1. The slope surface of the funnel 5 can reduce the blockage of the filler during the discharge process, keep the discharge pipe 3 unobstructed, reduce the splashing and scattering of the filler during the addition process, and ensure the cleanliness and safety of the production environment.

[0035] In one embodiment of the present application, see Figure 4 As shown, an insulating bracket 6 is connected to the side of the feed pipe 3 .

[0036] In the above embodiment, the insulating bracket 6 is used to fix and support the feed pipe 3. Preferably, the insulating bracket 6 is made of ceramic insulating material to prevent the feed pipe 3 from tilting due to the impact of the filler, which is beneficial to improving the stability of the feed pipe 3.

[0037] In one embodiment of the present application, see Figure 3 As shown, the inner wall of the lower tube body 32 is connected to a buffer plate 33 which is arranged obliquely.

[0038] In the above embodiment, the obliquely arranged buffer plate 33 connected to the inner wall of the lower tube body 32 is used to buffer the filling material falling in the lower tube 3, thereby preventing the filling material from directly falling into the furnace body 1 through the lower tube 3 and causing impact on the furnace body 1, thereby affecting the normal material reaction in the furnace body 1, and is beneficial to improving the stability of the lower tube 3 when filling.

[0039] In one embodiment of the present application, see Figure 3 As shown, a counterweight block 313 is connected to the outer side of the bottom end of the upper tube body 31 .

[0040] In the above embodiment, the counterweight block 313 on the outer side of the bottom end of the upper tube body 31 is used to increase the bottom mass of the upper tube body 31 and thereby lower the center of the upper tube body 31 to improve the stability of the upper tube body 31. The counterweight block 313 presses down the third clamping ring 311 and can also increase the tightness of the connection between the third clamping ring 311 and the third clamping groove 41, thereby improving the stability of the discharge tube 3.

[0041] In one embodiment of the present application, the first card slot 323 , the second card slot 42 , and the third card slot 41 are filled with sealant.

[0042] In the above embodiment, the filling sealant can form a sealing layer at the connection of the card slot to prevent external substances such as liquid, gas or dust from entering the connection part, protect the connection from the influence of the external environment, and is beneficial to improving the sealing of the connection between the card slot and the snap ring. The filling sealant can fill the gap in the connection between the card slot and the snap ring, increase the tightness and stability of the connection, and prevent the connecting parts from loosening or falling off during use.

[0043] In the actual use of the present application: a first groove 323 is provided at the bottom of the first fixing ring 321, a first clamping ring 21 is provided on the outer ring of the filling port 2, the lower tube body 32 is plugged into the first clamping ring 21 through the first groove 323, and the first clamping ring 21 is plugged into the groove through the clamping ring. The first clamping ring 21 plays a role of fixing and limiting the lower tube body 32 to prevent the lower tube body 32 from shaking at the filling port 2 to produce a gap and cause the furnace gas to leak out. A fixing bolt 11 is connected to the upper end surface of the furnace body 1, and a through hole 322 is provided on the first fixing ring 321 of the lower tube body 32. The fixing bolt 11 passes through the through hole 322 and is tightened with a nut, so that the first groove 323 and the first The clamping ring 21 is inserted more tightly to improve the sealing and stability of the lower tube body 32 at the filling port 2, and prevent the furnace gas from leaking from the gap between the lower tube body 32 and the filling port 2. The upper tube body 31 is connected to the lower tube body 32 through the mica ring 4. The upper end face of the mica ring 4 is provided with a third clamping groove 41, which is inserted into the third clamping ring 311 provided on the lower end face of the upper tube body 31. The lower end face of the mica ring 4 is provided with a second clamping groove 42, which is inserted into the second clamping ring 324 connected to the upper end of the first fixing ring 321, thereby realizing the insulation isolation connection between the upper tube body 31 and the lower tube body 32 through the mica ring 4, preventing the lower tube 3 from conducting the arc generated during heating in the furnace body 1.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A sealing device for a feed pipe of a submerged arc furnace, comprising a furnace body (1), a filling port (2) being provided on the upper end surface of the furnace body (1), a feed pipe (3) being inserted into the filling port (2), and characterized in that: The feed tube (3) comprises an upper tube body (31) and a lower tube body (32); a first fixing ring (321) is formed at one end of the lower tube body (32); a through hole (322) is provided on the first fixing ring (321); a first clamping groove (323) is provided at the bottom of the first fixing ring (321); a second clamping ring (324) is connected to the upper end of the first fixing ring (321); a first clamping ring (21) is provided on the outer ring of the filling port (2); a fixing bolt (11) is connected to the upper end surface of the furnace body (1); the upper tube body (31) and the lower tube body (32) are connected via a mica ring (4); a third clamping groove (41) is provided on the upper end surface of the mica ring (4); a second clamping groove (42) is provided on the lower end surface of the mica ring (4); and a third clamping ring (311) is provided on the lower end surface of the upper tube body (31).

2. The sealing device for the feed pipe of a submerged arc furnace according to claim 1, characterized in that: A valve (312) is installed on the tube body of the upper tube body (31).

3. The sealing device for the feed pipe of a submerged arc furnace according to claim 1, characterized in that: The upper end of the upper tube body (31) is plugged with a funnel (5).

4. The sealing device for the feed pipe of a submerged arc furnace according to claim 1, characterized in that: The side of the feeding pipe (3) is connected with an insulating bracket (6).

5. The sealing device for the feed pipe of a submerged arc furnace according to claim 1, characterized in that: The inner wall of the lower tube body (32) is connected to a buffer plate (33) which is arranged obliquely.

6. The sealing device for the feed pipe of a submerged arc furnace according to claim 1, characterized in that: A counterweight block (313) is connected to the outer side of the bottom end of the upper tube body (31).

7. The sealing device for a feed pipe of a submerged arc furnace according to any one of claims 1 to 6, characterized in that: The first card slot (323), the second card slot (42) and the third card slot (41) are filled with sealant.

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