Oxygen content adjusting device of top-bottom combined blown converter

Abstract

The utility model relates to the technical field of converter top-bottom combined blowing, in particular to an oxygen content adjusting device of a top-bottom combined blowing converter, which adopts the technical scheme that the oxygen content adjusting device comprises an adjusting pipe, an air inlet pipe and a lifting box, an air flow meter is arranged on the adjusting pipe, an extension hole is formed in the upper end of the adjusting pipe, and the lifting box is mounted at the side end of the adjusting pipe. A threaded rod is rotatably installed in the lifting box, a movable block is installed on the threaded rod in a threaded mode, a lifting rod is installed at the front end of the movable block, the tail end of the lifting rod extends into the adjusting pipe from the extending hole, and a conical valve plate is installed in the adjusting pipe; the air inlet pipe is installed at the side end, away from the lifting box, of the adjusting pipe; a mounting opening is formed in the air inlet pipe, a filter screen is mounted in the air inlet pipe from the mounting opening, a meshing cover plate is clamped in the mounting opening, and a handle is mounted at the upper end of the meshing cover plate. The oxygen supply device has the advantages that air can be filtered, and the amount of entering oxygen can be metered and adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of top and bottom combined blowing of converters, in particular to an oxygen content regulating device for a top and bottom combined blowing converter. Background Art

[0002] Converter steelmaking uses molten iron, scrap steel, and ferroalloys as the main raw materials. It does not rely on external energy sources, but relies on the physical heat of the molten iron itself and the heat generated by the chemical reaction between the components of the molten iron to complete the steelmaking process in the converter. Converters are divided into acidic and alkaline types according to the refractory materials, and top-blown, bottom-blown, and side-blown according to the location where the gas is blown into the furnace; and air converters and oxygen converters according to the type of gas. Alkaline oxygen top-blown and top-bottom combined-blown converters are the most commonly used steelmaking equipment due to their fast production speed, large output, high single-furnace output, low cost, and low investment.

[0003] During converter steelmaking, oxygen needs to be supplied to the converter through top and bottom combined blowing equipment. The oxygen content is not measured when the air enters. When adjusting the oxygen supply, the staff needs to observe the situation and then adjust it manually. The adjustment operation is cumbersome and inaccurate. In addition, there will be impurities in the air, and the impurities will directly enter the converter without being filtered, affecting the quality of steelmaking. Utility Model Content

[0004] The utility model aims to provide an oxygen content regulating device for a top and bottom combined blowing converter, which has the advantages of being able to filter air and measure and regulate the amount of oxygen entering, thereby solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oxygen content regulating device for a top and bottom combined blowing converter, comprising a regulating pipe, an air inlet pipe and a lifting box, the regulating pipe is provided with an air flow meter, an upper end of the regulating pipe is provided with an extension hole, the lifting box is installed at the side end of the regulating pipe, a threaded rod is rotatably installed in the lifting box, a movable block is threadedly installed on the threaded rod, a lifting rod is installed at the front end of the movable block, and the end of the lifting rod extends from the extension hole to a conical valve plate installed in the regulating pipe;

[0006] The air inlet pipe is installed at one side of the regulating pipe away from the lifting box, a flange is installed at the end of the air inlet pipe, an installation opening is opened on the air inlet pipe, a filter is installed from the installation opening into the air inlet pipe, and an engaging cover plate is clamped in the installation opening.

[0007] When using the oxygen content regulating device of the top and bottom combined blowing converter of the utility model,

[0008] The utility model relates to an air intake pipe connected with a top-bottom re-blowing device. Air enters from the air intake pipe, and can be filtered through a filter screen to intercept impurities in the air. The filtered air can enter the regulating pipe, and the amount of oxygen can be measured by an air flow meter. The amount of oxygen can be adjusted according to the measured data. When adjusting, the threaded rod can be rotated by operating a driving device, and the conical valve plate can be moved up and down with the cooperation of a movable block. When the conical valve plate moves up and down, the amount of air entering the regulating pipe from the air intake pipe can be adjusted.

[0009] Preferably, a movable opening is provided at a side end of the lifting box, and the lifting rod extends out of the lifting box from the movable opening.

[0010] Preferably, a driving device is provided at the upper end of the lifting box, and a main shaft of the driving device is connected to the axis of the threaded rod.

[0011] Preferably, a handle is installed on the upper end of the engaging cover plate.

[0012] Preferably, the inner wall of the air inlet pipe and the lower end of the engaging cover plate are both provided with engaging grooves, and the edge of the filter screen is located in the engaging groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The air enters from the intake pipe. When the air passes through the intake pipe, it can be filtered through the filter. The filter can intercept impurities in the air. After the impurities in the air are filtered, they can prevent the impact on the quality of steelmaking.

[0015] 2. When the air is discharged through the regulating pipe, the amount of oxygen can be measured by the air flow meter, and the oxygen amount can be adjusted according to the measured data. During adjustment, the threaded rod can be rotated by the driving device, and the conical valve plate can be moved up and down with the cooperation of the movable block. The up and down movement of the conical valve plate can adjust the amount of air entering the regulating pipe from the intake pipe, thereby completing the adjustment of the oxygen intake amount. With the cooperation of the air flow meter, the accuracy of the adjustment is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the first front view of the utility model;

[0017] Figure 2 It is a second front view of the utility model;

[0018] Figure 3 This is a front view structural schematic diagram of the utility model;

[0019] Figure 4 It is a cross-sectional structural schematic diagram of the utility model.

[0020] The reference numerals and names in the figures are as follows:

[0021] 101. regulating tube; 102. conical valve plate; 103. air flow meter; 201. air intake pipe; 202. engaging cover plate; 203. flange; 204. handle; 205. mounting port; 206. engaging groove; 207. filter; 301. lifting box; 302. lifting rod; 303. movable port; 304. driving device; 305. threaded rod; 306. movable block. DETAILED DESCRIPTION

[0022] 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.

[0023] Example

[0024] See also Figures 1 to 4 The utility model provides an embodiment: an oxygen content regulating device for a top and bottom combined blowing converter, comprising:

[0025] The regulating pipe 101, the air intake pipe 201 and the lifting box 301, the regulating pipe 101 is provided with an air flow meter 103, the upper end of the regulating pipe 101 is provided with an extension hole, the lifting box 301 is installed at the side end of the regulating pipe 101, a threaded rod 305 is rotatably installed in the lifting box 301, a movable block 306 is threadedly installed on the threaded rod 305, a lifting rod 302 is installed at the front end of the movable block 306, and the end of the lifting rod 302 extends from the extension hole to the regulating pipe 101 where a conical valve plate 102 is installed;

[0026] The air inlet pipe 201 is installed at one side of the regulating pipe 101 away from the lifting box 301, and a flange 203 is installed at the end of the air inlet pipe 201. A mounting opening 205 is opened on the air inlet pipe 201, and a filter screen 207 is installed from the mounting opening 205 into the air inlet pipe 201, and an engaging cover plate 202 is clamped in the mounting opening 205.

[0027] In this embodiment, the air intake pipe 201 of the utility model is connected to the top and bottom double blowing device, and the air enters from the air intake pipe 201. The air can be filtered through the filter 207 to intercept impurities in the air, and the filtered air can enter the regulating pipe 101. The oxygen amount can be measured by the air flow meter 103, and the oxygen amount can be adjusted according to the measured data. During adjustment, the threaded rod 305 can be rotated by the driving device 304, and the conical valve plate 102 can be moved up and down with the cooperation of the movable block 306. When the conical valve plate 102 moves up and down, the air intake amount of the air intake pipe 201 entering the regulating pipe 101 can be adjusted.

[0028] Furthermore,

[0029] The side end of the lifting box 301 is provided with an active opening 303, and the lifting rod 302 extends out of the lifting box 301 from the active opening 303. The provision of the active opening 303 can facilitate the lifting rod 302 to move up and down.

[0030] Furthermore,

[0031] The upper end of the lifting box 301 is provided with a driving device 304, and the main shaft of the driving device 304 is connected to the axis of the threaded rod 305. The driving device 304 can make the threaded rod 305 rotate clockwise or counterclockwise, and the threaded rod 305 can make the movable block 306 move up or down when it rotates clockwise or counterclockwise.

[0032] Furthermore,

[0033] A handle 204 is installed at the upper end of the engagement cover plate 202. The arrangement of the handle 204 can facilitate the engagement cover plate 202 to be removed from the installation opening 205.

[0034] Furthermore,

[0035] The inner wall of the air inlet pipe 201 and the lower end of the engagement cover plate 202 are both provided with an engagement groove 206, and the edge of the filter screen 207 is located in the engagement groove 206. The arrangement of the engagement groove 206 can limit the installed filter screen 207.

[0036] The driving device 304 and the air flow meter 103 in the utility model are well-known devices, and their working principles and circuit connections are well known to technicians in the field. They are conventional means or common knowledge and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An oxygen content regulating device for a top and bottom combined blowing converter, comprising a regulating pipe (101), an air inlet pipe (201) and a lifting box (301), characterized in that: The regulating tube (101) is provided with an air flow meter (103), an extension hole is opened at the upper end of the regulating tube (101), the lifting box (301) is installed at the side end of the regulating tube (101), a threaded rod (305) is rotatably installed in the lifting box (301), a movable block (306) is threadedly installed on the threaded rod (305), a lifting rod (302) is installed at the front end of the movable block (306), and the end of the lifting rod (302) extends from the extension hole to the regulating tube (101) where a conical valve plate (102) is installed; The air intake pipe (201) is installed at one end of the regulating pipe (101) away from the lifting box (301), and a flange (203) is installed at the end of the air intake pipe (201). The air intake pipe (201) is provided with an installation opening (205), and a filter screen (207) is installed in the air intake pipe (201) from the installation opening (205), and an engaging cover plate (202) is clamped in the installation opening (205).

2. The oxygen content regulating device for a top and bottom combined blowing converter according to claim 1, characterized in that: A movable opening (303) is provided at the side end of the lifting box (301), and the lifting rod (302) extends out of the lifting box (301) from the movable opening (303).

3. The oxygen content regulating device for a top and bottom combined blowing converter according to claim 1, characterized in that: A driving device (304) is provided at the upper end of the lifting box (301), and the main shaft of the driving device (304) is connected to the axis of the threaded rod (305).

4. The oxygen content regulating device for a top and bottom combined blowing converter according to claim 1, characterized in that: A handle (204) is installed at the upper end of the engagement cover plate (202).

5. The oxygen content regulating device for a top and bottom combined blowing converter according to claim 1, characterized in that: The inner wall of the air inlet pipe (201) and the lower end of the engagement cover plate (202) are both provided with an engagement groove (206), and the edge of the filter screen (207) is located in the engagement groove (206).

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