Atomization cooling supercharging device of front tapping machine of ironmaking furnace

Abstract

The utility model discloses an atomization cooling supercharging device for a front tapping machine of an iron making furnace, which comprises a water storage tank, and an overflow pipe is arranged in the water storage tank; the overflow pipe is arranged in the height direction of the water storage tank, and a plurality of overflow holes are formed in the overflow pipe; an inlet of the overflow pipe is connected with a mixing pipe; an inlet of the mixing pipe is connected to an air compression header pipe; the mixing pipe is also connected with a water inlet pipe; the top of the water storage tank is connected to an air inlet pipeline of the tapping machine through a steam outlet pipe; compressed air and water are mixed through the mixing pipe and then discharged into the water storage tank through the overflow pipe, then the compressed air floats upwards in the water storage tank, and finally the compressed air containing water vapor is fed into the air inlet pipeline of the tapping machine through the steam outlet pipe, so that cooling air of the tapping machine contains water, the temperature of the cooling air is reduced, and the service life of the tapping machine is prolonged. The cooling effect of the tapping machine drill rod is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to blast furnace ironmaking equipment technical field, especially relate to a kind of ironmaking furnace front opening machine atomization cooling pressure increasing device. BACKGROUND

[0002] Iron tapping process is the process that hydraulic opening machine drills high-temperature refractory slurry, forms about 2.6 meters long molten iron passage, and drains molten iron in blast furnace to molten iron channel. Opening machine is a key equipment in front of blast furnace, and its performance directly affects the production order and consumable cost in front of blast furnace.

[0003] The blast furnace front clay gun and iron tapping machine of ironmaking are arranged on the same side of main channel, and drill bit and drill rod need to be replaced multiple times for each iron tapping. The main reason is that when iron tapping machine opens iron tapping, the temperature of iron tapping passage rises from 200℃ to 1400℃ with the deepening of drill rod, which is a complex environment with more than one gradient temperature change. The drill bit blade of iron tapping machine is made of tungsten-cobalt hard alloy, and its heat resistance is generally about 800℃. When the drill bit drills into iron tapping for 2000mm, the clay temperature has exceeded 800℃, and the environment temperature will quickly reach more than 1000℃ when drilling further.

[0004] The drill bit is subjected to the combined action of high temperature and mechanical force. Under this condition, the strength of drill rod decreases and bends, the efficiency of drill pin decreases, the drill bit starts to have large shrinkage deformation, cracks are generated between the blade and the blade groove of the bit body, the blade is easy to fall off from the blade groove, and the drill bit is disabled. Especially when the red hard layer of iron tapping is thick, the drill rod is red and melted and broken due to a large amount of oxygen contained in compressed air (the drill rod is a hollow structure, and compressed air is introduced into the inside for cooling during drilling), and even the iron tapping cannot be opened. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of ironmaking furnace front opening machine atomization cooling pressure increasing device to provide atomization steam for opening machine and improve the cooling effect of opening machine drill rod.

[0006] The utility model adopts the following technical scheme: a kind of ironmaking furnace front opening machine atomization cooling pressure increasing device, including water storage tank, overflow pipe is arranged in water storage tank;

[0007] Overflow pipe is arranged along the height direction of water storage tank, and a plurality of overflow holes are formed in overflow pipe;

[0008] The inlet of overflow pipe is connected with mixing pipe;

[0009] The inlet of mixing pipe is connected to air pressure main pipe;

[0010] Mixing pipe is also connected with water inlet pipe;

[0011] The top of water storage tank is connected to the air inlet pipe of opening machine by steam outlet pipe.

[0012] Further, the overflow pipe is vertically arranged, and a part of the overflow pipe inside the water storage tank is spaced apart in a height direction and provided with overflow holes.

[0013] Further, a top of the overflow pipe penetrates and extends out of a top end of the water storage tank, and the top end of the overflow pipe is provided with an exhaust valve.

[0014] Further, the mixing pipe and the overflow pipe are integrally formed.

[0015] Further, the water inlet pipe is above the mixing pipe, and axes of the two pipes intersect.

[0016] Further, a top of the water storage tank is connected with a gas supplement pipe, and the gas supplement pipe is connected with an air compression main pipe.

[0017] Further, an outer part of the water storage tank is connected with a liquid level pipe.

[0018] A top end of the liquid level pipe is in communication with a top end of the water storage tank,

[0019] A bottom end of the liquid level pipe is in communication with a bottom end of the water storage tank.

[0020] Further, a bottom end of the water storage tank is provided with a sewage outlet.

[0021] Further, a bottom of the water storage tank is provided with a water outlet.

[0022] Further, a lower part of the water storage tank is provided with a plurality of supporting legs.

[0023] The beneficial effects of the present application are as follows: the compressed air and water are mixed by the mixing pipe, and then the mixture is discharged into the water storage tank through the overflow pipe, then the compressed air floats in the water storage tank, and finally the compressed air containing water vapor is sent into the air inlet pipe of the opening machine through the steam outlet pipe, so that the cooling gas of the opening machine contains water, the cooling gas temperature is reduced, and the cooling effect of the opening machine drill rod is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structure schematic view of the opening machine atomizing cooling and pressurizing device before the iron-making furnace.

[0025] Among them: 11. water storage tank; 12. mixing pipe; 13. water inlet pipe; 14. overflow pipe; 15. gas supplement pipe; 16. steam outlet pipe; 17. liquid level pipe; 18. water outlet pipe; 19. sewage pipe;

[0026] 20. air compression main pipe; 30. opening machine. DETAILED DESCRIPTION

[0027] The present application will be described in detail below in combination with the drawings and specific embodiments.

[0028] The current blast furnace hydraulic opening machine (i.e. rock drilling opening machine) drill bit cooling medium is mainly compressed air, which flows to the rock drilling opening machine-drill rod-drill bit through a branch pipeline to realize the ventilation cooling of the opening operation. Since the compressed air pressure is low, it is easy to be blocked during the opening drilling process, and the compressed air cannot effectively circulate and cool, so the hydraulic opening machine drill bit is easily damaged, which seriously affects the production rhythm.

[0029] The utility model discloses an atomization cooling pressure increasing device of iron smelting furnace front opening machine, as shown in Figure 1 The utility model discloses an atomization cooling pressure increasing device of iron smelting furnace front opening machine, as shown in

[0030] The utility model discloses an atomization cooling pressure increasing device of iron smelting furnace front opening machine, as shown in

[0031] The utility model discloses an atomization cooling pressure increasing device of iron smelting furnace front opening machine, as shown in

[0032] In an embodiment, the overflow pipe 14 is vertically arranged, and the part of the overflow pipe 14 inside the water storage tank 11 is spaced apart from each other in the height direction and provided with overflow holes. Specifically, the overflow pipe 14 is vertically arranged in the middle of the water storage tank 11, and overflow holes are spaced apart from each other on the outer periphery of the cross section of the overflow pipe 14. The gas and water mixture overflow from the overflow holes, the compressed air containing water vapor is sent into the cooling pipeline of the opening machine through the steam outlet pipe 16, and the water falls into the bottom of the water storage tank.

[0033] More specifically, the overflow holes are arranged at intervals in the axial direction of the overflow pipe 14 to ensure the overflow of water and air and facilitate the adjustment of the pressure of the various devices in the system. Preferably, when the height of the water storage tank 11 is about 550 mm, a row of overflow holes can be arranged at intervals of 50 mm, and four overflow holes can be arranged in each row in the circumferential direction.

[0034] As a specific implementation form, the top of the overflow pipe 14 penetrates and extends out of the top end of the water storage tank 11, and the top end of the overflow pipe 14 is provided with an air exhaust valve. By arranging the air exhaust valve, when the pressure in the water storage tank 11 is too high, the air exhaust valve can be opened to exhaust air and reduce the pressure.

[0035] In the utility model, the water inlet pipe 13 is located above the mixing pipe 12, and the axes of the two intersect. Figure 1 As described above, the included angle between the axes of the two is 45°. When the water flow enters the mixing pipe 12 from the water inlet pipe 13, it falls from the upper part of the mixing pipe 12 to the lower part under the action of gravity, and the air entering from the right side interlaces with the falling water flow, so that the air can mix with water vapor, thereby increasing the water vapor content in the air and improving the cooling effect of the open-hole machine drill rod.

[0036] The top of the water storage tank 11 is connected with the air supplement pipe 15, and the air supplement pipe 15 is connected with the air compressor main pipe. The air supplement pipe 15 can supplement the pressure in the water storage tank 11, so that the pressure in the water storage tank 11 can be maintained at the expected pressure.

[0037] In addition, the outside of the water storage tank 11 is connected with the liquid level pipe 17; the top end of the liquid level pipe 17 communicates with the top end of the water storage tank 11, and the bottom end of the liquid level pipe 17 communicates with the bottom end of the water storage tank 11. The liquid level pipe 17 adopts a common PU pipe, and the PU pipe is vertically arranged and has the same height direction as the water storage tank and communicates with the water storage tank, so that the water level in the water storage tank can be observed in real time. PU pipe quick connectors can be installed at the connection positions for quick connection.

[0038] In one embodiment, the bottom end of the water storage tank 11 is provided with a sewage outlet, and the bottom of the water storage tank 11 is provided with a drain outlet. The sewage and water in the water storage tank 11 can be discharged through the sewage outlet and the drain pipe.

[0039] In order to facilitate operation, a plurality of supporting legs are arranged below the water storage tank 11, the water storage tank 11 is arranged in the air, and the pipeline connection can be facilitated.

[0040] In summary, the open-hole machine atomizing cooling device of the utility model is composed of an air pipe, a water pipe and a water storage tank 11, the air outlet pipe 16 is connected with the open-hole machine to provide cooling atomized gas for the open-hole machine drill rod. Valves are installed on each pipe, the water level can be observed through the PU pipe outside the water storage tank 11, the other end communicates with the air pipe, the original open air passage is used, the water mist is sent to the drill bit to achieve the cooling effect, the consumption of the drill bit and drill rod is reduced, and the cost of spare parts is reduced.

[0041] When the iron notch is opened, the fine and uniform water mist produced by mixing the cooling water and compressed air can also restrain the smoke and dust produced when the iron notch is opened, thus reducing the pollution of flying dust, enhancing the cooling effect on the opening machine, drill rod and drill head, prolonging the service life of the rock drill and reducing the consumption of drill rod and drill head.

Claims

1. An atomizing cooling supercharging device for an iron-making furnace front opening machine, characterized by, Including water storage tank (11), the overflow pipe (14) is arranged in the water storage tank (11); The overflow pipe (14) is arranged along the height direction of the water storage tank (11), and a plurality of overflow holes are formed in the overflow pipe (14); The inlet of the overflow pipe (14) is connected with a mixing pipe (12); The inlet of the mixing pipe (12) is connected to an air pressure main pipe (20); The mixing pipe (12) is also connected with a water inlet pipe (13); The top of the water storage tank (11) is connected to the air inlet pipe of the opening machine (30) through the steam outlet pipe (16).

2. An atomizing cooling supercharging device for an iron-making furnace opening machine as defined in claim 1, wherein The overflow pipe (14) is vertically arranged, and the part inside the water storage tank (11) is spaced apart along the height direction and provided with the overflow holes.

3. An atomizing cooling supercharging device for an iron-making furnace opening machine as defined in claim 2, wherein The top of the overflow pipe (14) penetrates and extends out of the top end of the water storage tank (11), and an exhaust valve is installed at the top end of the overflow pipe (14).

4. An atomizing and cooling supercharging device for an iron-making furnace opening machine according to claim 2 or 3, characterized in that, The mixing pipe (12) and the overflow pipe (14) are integrally formed.

5. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 4, characterized in that, The water inlet pipe (13) is above the mixing pipe (12), and the axes of the two intersect.

6. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 4, characterized in that, The top of the water storage tank (11) is connected with a gas supplement pipe (15), and the gas supplement pipe (15) is connected with the air pressure main pipe.

7. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 1, characterized in that, The outside of the water storage tank (11) is connected with a liquid level pipe (17); The top end of the liquid level pipe (17) is communicated with the top end of the water storage tank (11), The bottom end of the liquid level pipe (17) is communicated with the bottom end of the water storage tank (11).

8. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 7, characterized in that, The bottom end of the water storage tank (11) is provided with a sewage outlet.

9. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 8, characterized in that, The bottom of the water storage tank (11) is provided with a drain hole.

10. An atomizing cooling supercharging device for an iron-smelting furnace front opening machine according to claim 9, characterized in that, The bottom of the water storage tank (11) is provided with a plurality of supporting legs.

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