Furnace pressure adjusting device of submerged arc furnace

Abstract

The utility model relates to the technical field of furnace pressure adjusting devices, in particular to a submerged arc furnace pressure adjusting device. The utility model provides a submerged arc furnace pressure adjusting device which comprises a valve body communicating with a furnace body of a submerged arc furnace, a pressure relief assembly capable of conducting automatic pressure relief operation is arranged in the valve body and comprises an opening and closing part and a guiding part, and the opening and closing part is arranged between an inlet and an outlet of the valve body and used for forming an opening and closing effect; the guiding piece and the opening and closing piece are coaxially arranged, and the guiding piece is arranged at the position where the valve deck is located and used for playing a stable guiding and supporting role when the opening and closing piece is opened and closed. Due to the fact that the opening and closing piece and the guiding piece are designed for the adjusting device, automatic pressure relief operation of the valve body can be achieved through the opening and closing piece, stable reciprocating motion of the opening and closing piece can be achieved through the guiding piece, and the problem that in the prior art, due to the fact that a submerged arc furnace lacks a pressure adjusting device, the pressure of the submerged arc furnace is too high along with continuous heating is solved. And cracking or explosion is easy to occur.

Description

Technical Field

[0001] The present application relates to the technical field of furnace pressure regulating devices, and in particular to a furnace pressure regulating device for an electric arc furnace. Background Art

[0002] In the prior art, a certain furnace pressure needs to be maintained during the operation of the ore-fired furnace to ensure the stability and efficiency of the smelting process. However, most traditional ore-fired furnaces are not equipped with a pressure regulating device. When the furnace pressure is too high due to continuous heating, if the pressure relief operation is not performed in time, it is easy to cause the ore-fired furnace to crack or explode. Utility Model Content

[0003] The problem to be solved by the present application is that the existing submerged arc furnace lacks a pressure regulating device, which results in the problem of cracking or explosion when the furnace pressure is too high as the submerged arc furnace continues to heat.

[0004] In order to solve the above-mentioned technical problems, the present application provides a furnace pressure regulating device for an electric arc furnace, comprising a valve body connected to the furnace body of the electric arc furnace, wherein a pressure relief assembly capable of automatically performing pressure relief operation is arranged inside the valve body, and the pressure relief assembly comprises an opening and closing member and a guide member, and the opening and closing member is arranged between the inlet and outlet of the valve body to form an opening and closing action, and the guide member is arranged coaxially with the opening and closing member and is placed at the position of the valve cover, so as to provide a stable guiding and supporting role for the opening and closing member when opening and closing.

[0005] Since the regulating device of the present application is designed with an opening and closing member and a guide member, it is possible to realize automatic pressure relief operation of the valve body through the opening and closing member, and to realize stable reciprocating motion of the opening and closing member through the guide member, thereby solving the problem that the prior art electric arc furnace lacks a pressure regulating device, which causes the electric arc furnace to crack or explode easily when the furnace pressure is too high as the heating continues. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment.

[0007] Figure 2 It is a structural schematic diagram of the pressure relief component.

[0008] In the figure: 1. Valve cover; 2. Guide; 3. Valve body; 4. Opening and closing parts; 5. Inlet; 6. Outlet; 7. Diaphragm; 8. Diaphragm seat; 9. Valve stem; 10. Spring; 11. Valve plate; 12. Rubber pad; 13. Valve seat; 14. Pressure plate. DETAILED DESCRIPTION

[0009] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only 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 are within the scope of protection of this application. Example

[0010] The present application relates to a furnace pressure regulating device for an ore-fired furnace, such as Figure 1-2 As shown, the regulating device includes a valve body 3 connected to the furnace body of the electric arc furnace, and an inlet 5 and an outlet 6 are respectively arranged at both ends of the valve body 3. A pressure relief component is arranged inside the valve body 3, which can automatically relieve pressure when the furnace pressure of the electric arc furnace is too high. In order to facilitate the loading, unloading and maintenance of the pressure relief component, a valve cover 1 detachably connected to the valve body 3 is arranged at one end of the valve body 3, so that when the valve cover 1 is opened, the user can easily take out the pressure relief component from the inside of the valve body 3. The pressure relief component is a passive pressure relief component with elastic preload, so that when the furnace pressure is too high, it can automatically discharge pressure to the outside, and when the furnace pressure returns to normal, the pressure relief component can maintain a sealed state under the action of the elastic preload.

[0011] The pressure relief assembly includes an opening and closing member 4 and a guide member 2. The opening and closing member 4 is arranged between the inlet 5 and the outlet 6 of the valve body 3 to form an opening and closing effect. The guide member 2 is coaxially arranged with the opening and closing member 4 and is placed at the position of the valve cover 1 to provide a stable guiding and supporting effect for the opening and closing member 4 when opening and closing.

[0012] The guide member 2 includes a valve stem 9, a spring 10, a diaphragm seat 8, and a diaphragm 7. The diaphragm seat 8 is arranged between the valve body 3 and the valve cover 1, and is connected to the two by bolts respectively. The valve stem 9 and the diaphragm seat 8 are arranged coaxially and can slide back and forth. A diaphragm 7 connected to the valve stem 9 is arranged at one end of the diaphragm seat 8. The arrangement of the diaphragm seat 8 can guide the movement of the valve stem 9, and the arrangement of the diaphragm 7 can make the reciprocating motion of the valve stem 9 more stable, avoiding collision between the valve stem 9 and the valve cover 1. In order to make the valve stem 9 have an elastic preload, a spring 10 arranged on one side of the valve seat 13 is sleeved on the upper part of the valve stem 9.

[0013] The opening and closing component 4 includes a valve seat 13, a pressure plate 14, a rubber pad 12, and a valve plate 11. The valve plate 11 is arranged on the upper part of the valve stem 9 and abuts against one end of the spring 10. The valve seat 13 is arranged inside the valve body 3 and abuts against the valve plate 11, thereby forming a closed operation of the valve body 3. In order to further improve the sealing performance between the valve seat 13 and the valve plate 11, a pressure plate 14 concentric with the valve plate 11 is arranged at one end of the valve plate 11, and the end of the pressure plate 14 is covered with a rubber pad 12, so that the pressure plate 14 can be inserted into the valve seat 13, and the rubber pad 12 can abut against one end of the valve seat 13, and then the valve body 3 is closed by the pressure plate 14, the rubber pad 12 and the valve plate 11.

[0014] When in use, by connecting the inlet 5 of the valve body 3 to the upper part of the mineral arc furnace, when the internal pressure of the mineral arc furnace suddenly increases, the internal air pressure will act on the surface of the pressure plate 14 inside the valve body 3. When the pressure exceeds the preload force of the spring 10, the valve stem 9 will slide along the axial direction of the diaphragm seat 8 and drive the diaphragm 7 to elastically deform. At the same time, the valve plate 11 will also move with the valve stem 9, so that the distance between the valve plate 11 and the diaphragm seat 8 is gradually reduced, and the spring 10 is continuously compressed. Then the pressure plate 14 and the rubber pad 12 at the end of the valve plate 11 are separated from the valve seat 13, so that the pressure inside the mineral arc furnace can be discharged along the gap between the valve seat 13 and the valve plate 11. When the internal pressure of the mineral arc furnace is less than the elastic force of the spring 10, the spring 10 drives the valve plate 11 and the valve plate 11 to reset, thereby re-sealing the mineral arc furnace.

[0015] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0016] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0017] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0018] 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, those skilled in the art should understand that they can still modify the technical solutions described 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 furnace pressure regulating device for a submerged arc furnace, comprising a valve body connected to a furnace body of the submerged arc furnace, characterized in that: A pressure relief assembly capable of performing automatic pressure relief operation is arranged inside the valve body, and the pressure relief assembly includes an opening and closing member and a guide member. The opening and closing member is arranged between the inlet and outlet of the valve body to form an opening and closing action. The guide member is arranged coaxially with the opening and closing member and is placed at the position of the valve cover, and is used to provide a stable guiding and supporting effect for the opening and closing member when opening and closing. The guide member includes a diaphragm seat, a valve stem and a diaphragm. The diaphragm seat is arranged between the valve body and the valve cover, and is connected to the two of them by bolts respectively. The valve stem and the diaphragm seat are arranged coaxially and can slide back and forth. A diaphragm connected to the valve stem is arranged at one end of the diaphragm seat.

2. The furnace pressure regulating device of a submerged arc furnace according to claim 1, characterized in that: The guide member also includes a spring, and the upper part of the valve stem is sleeved with a spring arranged on one side of the valve seat.

3. The furnace pressure regulating device of a submerged arc furnace according to claim 2, characterized in that: The opening and closing member comprises a valve plate and a valve seat. The valve plate is arranged on the upper part of the valve stem and abuts against one end of the spring. The valve seat is arranged inside the valve body and abuts against the valve plate.

4. The furnace pressure regulating device of a submerged arc furnace according to claim 3, characterized in that: The opening and closing member also includes a pressure plate and a rubber pad. A pressure plate concentric with the valve plate is arranged at one end of the valve plate, and the end of the pressure plate is covered with a rubber pad abutting against one end of the valve seat.

5. The furnace pressure regulating device of a submerged arc furnace according to claim 1, characterized in that: An inlet and an outlet are respectively arranged at both ends of the valve body.

6. The furnace pressure regulating device of a submerged arc furnace according to claim 1, characterized in that: A valve cover detachably connected to the valve body is arranged at one end of the valve body.

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