Blockage removing device of blast furnace branch pipe distributor

Abstract

The utility model belongs to the technical field of ironmaking coal injection, and particularly discloses a blockage cleaning device of a blast furnace branch pipe distributor, which comprises a sleeve, a pipe cover is detachably connected onto the sleeve, the sleeve is in threaded connection with the pipe cover, a through hole is formed in the pipe cover, a screw rod is in threaded connection in the through hole, a flange is arranged at one end of the sleeve far away from the pipe cover, and one end of the screw rod is conical. The end, away from the cone, of the lead screw is fixedly connected with a handle, a pressure relief pipe is arranged on the sleeve, a pressure relief valve is arranged on the pressure relief pipe, the pressure relief pipe is located on the side, close to the pipe cover, of the sleeve, a rubber ring is arranged on the flange, and the sleeve, the lead screw and the handle are all made of stainless steel. The sleeve is fixed on the blowing branch pipe through the flange, the screw rod is inserted from the through hole, the thread rotates downwards to penetrate into the blowing branch pipe, and the blocked part in the blowing branch pipe is poked through the conical part of the screw rod, so that the aim of unblocking is fulfilled. The tool is easy to manufacture and convenient to use, and the operation intensity of workers can be reduced when the tool is used for unblocking.

Description

TECHNICAL FIELD

[0001] The utility model relates to ironmaking coal injection technical field, concretely relates to a kind of unblocking device of blast furnace branch pipe distributor. BACKGROUND

[0002] Conventional injection branch pipe distributor is the important equipment of blast furnace coal injection, and when it works normally, coal powder flow passes through coal injection distributor to ensure that there is stable coal injection amount at each tuyere of blast furnace, so that the required coal amount of blast furnace is ensured while uniform injection in the circumferential direction of blast furnace is ensured.In the production process of blast furnace, once foreign matter is mixed in coal powder, blockage is prone to occur, and when multiple coal injection lances are blocked, it will seriously affect the coal injection amount of blast furnace, cause uneven coal injection amount in the circumferential direction of blast furnace, airflow distribution changes, and lead to furnace condition fluctuation.

[0003] When coal powder blockage occurs in the branch pipe of coal injection distributor, pressure air is used for blowing first, and when blowing air cannot push open, the entire series needs to be stopped for coal discharge and pressure relief, and the pipeline is manually disassembled to use crowbar for dredging treatment.But such unblocking method has the following problems: the coal lance in the pipeline in normal working state needs to be cooled by high-pressure air, and when the unblocking method of manually disassembling the pipeline and using crowbar for dredging is used, the coal lance of blocked pipeline needs to be withdrawn into the lance insertion channel to prevent burning, which is inconvenient to operate, and affects the coal injection amount of blast furnace, and when the furnace condition is not good, it will affect the operation of blast furnace. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of unblocking device of blast furnace branch pipe distributor to solve the problem that the coal lance in the pipeline in normal working state needs to be cooled by high-pressure air, and when the unblocking method of manually disassembling the pipeline and using crowbar for dredging is used, the coal lance of blocked pipeline needs to be withdrawn into the lance insertion channel to prevent burning, which is inconvenient to operate, and affects the coal injection amount of blast furnace.

[0005] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is: an unblocking device of blast furnace branch pipe distributor, comprising a sleeve, a pipe cover detachably connected to the sleeve, a through hole formed in the pipe cover, a screw rod threadedly connected to the through hole, a flange provided at one end of the sleeve away from the pipe cover, and a tapered end of the screw rod.

[0006] The principle and beneficial effects of the utility model are: the sleeve is fixed on the injection branch pipe by the flange, the screw rod is inserted from the through hole, the screw rod is rotated downward by screwing, until it penetrates into the interior of the injection branch pipe, the tapered end of the screw rod pries open the blocked place in the injection branch pipe, the purpose of unblocking is achieved, and the detachable connection between the pipe cover and the sleeve facilitates the cleaning of the interior of the sleeve after work.The utility model is simple in manufacture and convenient to use, and the use of the tool for unblocking can reduce the work intensity of workers at the post, and plays a positive role in high yield and smooth production of blast furnace.

[0007] Scheme two, this is the preferred basic scheme, the sleeve is provided with a pressure relief pipe, the pressure relief pipe is provided with a pressure relief valve, the pressure relief pipe is located on the sleeve close to the pipe cover side. When the blowing branch pipe is unblocked, the pressure furnace gas enters the sleeve, because the sleeve is in a sealed state at this time, so it is necessary to relieve the pressure in the sleeve, and the pressure relief valve is used to start and stop the pressure relief work.

[0008] Scheme three, this is the preferred basic scheme, the sleeve and the pipe cover are threadedly connected. The detachable connection mode of the threaded connection has a certain sealing property, which can prevent the gas entering the sleeve from leaking from the gap between the sleeve and the pipe cover.

[0009] Scheme four, this is the preferred basic scheme, the far end of the lead screw away from the cone is fixedly connected with a handle. The handle is added to facilitate the staff to hold and apply the rotating force, so that the rotation of the lead screw is more convenient to control, which is beneficial to accurately control the rotation angle and intensity of the lead screw.

[0010] Scheme five, this is the preferred basic scheme, the flange is provided with a rubber ring. The rubber ring is arranged to effectively fill the gap of the flange connection part, plays a sealing role, and prevents the gas from leaking from the connection part of the flange after the blowing branch pipe is unblocked.

[0011] Scheme six, this is the preferred scheme four, the sleeve, the lead screw and the handle are all made of stainless steel. The stainless steel material has good corrosion resistance, is suitable for the humid and corrosive environment in the blast furnace operation, and has good wear resistance. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a perspective view of the cleaning and unblocking device of the blast furnace branch pipe distributor of the utility model;

[0013] Figure 2 is an exploded view of the cleaning and unblocking device of the blast furnace branch pipe distributor of the utility model, and the lead screw and the handle are removed. DETAILED DESCRIPTION

[0014] The utility model will be further explained in detail through specific embodiments as follows:

[0015] The reference signs in the drawings of the specification include: 1. sleeve, 2. pipe cover, 3. through hole, 4. lead screw, 5. flange, 6. pressure relief pipe, 7. pressure relief valve, 8. handle, 9. rubber ring.

[0016] EMBODIMENT

[0017] The embodiment is basically as shown in the accompanying drawings Figure 1 and the accompanying drawings Figure 2The utility model discloses a kind of clearing device of blast furnace branch distributor, including sleeve 1, detachably connected with pipe cover 2 on sleeve 1, sleeve 1 and pipe cover 2 are threadedly connected, through hole 3 is formed on pipe cover 2, threaded connection is carried out in through hole 3 with screw rod 4, the end of sleeve 1 away from pipe cover 2 is equipped with flange 5, one end of screw rod 4 is conical, handle 8 is fixedly connected with the end of screw rod 4 away from conical, relief pipe 6 is equipped on sleeve 1, relief valve 7 is equipped on relief pipe 6, relief pipe 6 is located on the side of sleeve 1 close to pipe cover 2, rubber ring 9 is equipped on flange 5, sleeve 1, screw rod 4 and handle 8 are all stainless steel material.

[0018] The embodiment of the present application is:

[0019] When the blow-off branch pipe is blocked, first, the valve of the blow-off branch pipe is closed, then the flange 5 on the sleeve 1 in the utility model is fixed with the flange on the blow-off branch pipe by screw rod and nut, after fixing the sleeve 1, the tip of the screw rod 4 is inserted into the through hole 3, the handle 8 is rotated, the screw rod 4 is rotated downward along the thread, then the valve of the blow-off branch pipe is opened, the screw rod 4 gradually enters the inside of the blow-off branch pipe along with the rotation, the tip of the screw rod 4 is used to punch and poke the blocked place of the blow-off branch pipe, after one time of punching and poking action, the handle 8 is reversely rotated to make the screw rod 4 rotate upward, whether the gas is discharged from the relief pipe 6 is observed, if the gas is discharged, it indicates that the blockage is successfully unblocked, if the gas is not discharged, it indicates that the blockage is not successfully unblocked, then the work of rotating the screw rod 4 downward to punch and poke the pipeline and rotating the screw rod 4 upward to observe the gas is continuously repeated until the gas is discharged from the relief pipe 6, after the blockage is successfully unblocked, the valve of the blow-off branch pipe is closed, the handle 8 is reversely rotated to make the screw rod 4 rotate upward and separate from the through hole 3, then the flange 5 on the sleeve 1 is detached from the flange on the blow-off branch pipe, finally the valve of the blow-off branch pipe is opened to discharge the gas.

[0020] When the sleeve 1 is cleaned, the pipe cover 2 is rotated to separate the pipe cover 2 from the sleeve 1, then the inside and outside of the screw rod 4, the sleeve 1 and the pipe cover 2 are comprehensively cleaned by using cleaning tools and specified cleaning agent, after cleaning, the pipe cover 2 is covered back on the sleeve 1 and rotated to be tightened.

[0021] The above-mentioned is only the embodiment of the utility model, the specific structure and the common sense such as property in scheme are not described too much here. It should be pointed out that, for the person skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can be made, these should also be regarded as the protection range of the utility model, these will not affect the effect and the practicability of the patent of the utility model. The protection range of the present application should be accurate according to the content of its claims, the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A device for clearing a clog in a blast furnace stub distributor, characterized in that, The utility model provides a kind of pipe sleeve, including sleeve (1), detachably connected with pipe cover (2) on the sleeve (1), the through hole (3) is opened on the pipe cover (2), the screw rod (4) is threadedly connected in the through hole (3), the sleeve (1) is equipped with flange (5) at one end away from pipe cover (2), and the screw rod (4) is conical at one end.

2. A device for clearing a blockage in a branch pipe distributor of a blast furnace according to claim 1, characterised in that The sleeve (1) is provided with a pressure relief pipe (6), and the pressure relief pipe (6) is provided with a pressure relief valve (7).

3. A device for clearing a blockage in a branch pipe distributor of a blast furnace as claimed in claim 1, characterized in that The sleeve (1) and the pipe cover (2) are threadedly connected.

4. A device for clearing a blockage in a branch pipe distributor of a blast furnace as claimed in claim 1, characterized in that The screw rod (4) is fixedly connected with a handle (8) at the end away from the taper.

5. A device for clearing a blockage in a branch pipe distributor of a blast furnace as claimed in claim 1, characterized in that The flange (5) is provided with a rubber ring (9).

6. A device for clearing a blockage in a branch pipe distributor of a blast furnace as claimed in claim 4, characterised in that, The sleeve (1), the screw rod (4) and the handle (8) are all made of stainless steel.

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