CN208917226U - Straight blowing pipe of blast furnace coal powder lance sealing device - Google Patents

Abstract

The utility model discloses a kind of straight blowing pipe of blast furnace coal powder lance sealing devices, are related to straight blowing pipe of blast furnace coal powder lance manufacturing technology field, including coal powder lance gun barrel, the jet pipe packet connector connecting with blast furnace and the high temperature resistant ball-type non-return valve being located on the jet pipe packet connector；The coal powder lance gun barrel passes through the ball-type non-return valve and protrudes into the coal powder lance jack of the jet pipe packet connector, turnover plate type non-return valve is equipped in the front end of the high temperature resistant ball-type non-return valve, the turnover plate type non-return valve is equipped with seal nipple in entrance, the seal nipple includes joint body and the graphite packing sealing ring for being located at the joint body entrance, and the graphite packing sealing ring is equipped with the inner hole in mating connection with the coal powder lance gun barrel.Compared with the prior art, the problem of junction of jet pipe packet connector and coal powder lance gun barrel that the utility model can solve existing blast furnace is easy to appear air leakage phenomena.

Description

Straight blowing pipe of blast furnace coal powder lance sealing device

Technical field

The utility model relates to straight blowing pipe of blast furnace coal powder lance manufacturing technology fields, especially a kind of to spray for straight blowing pipe of blast furnace The sealing device of coal rifle.

Background technique

Straight blowing pipe of blast furnace coal powder lance is the tool of coal powder injection, currently, briquet replacing coke is the important means of Reducing Cost in Enterprises；It is logical Crossing the straight blowing pipe of blast furnace coal powder lance progress coal powder injection being located at each air port of blast furnace can promote blast furnace steady production, mentions high-coal ratio and optimization Index.There is a kind of straight blowing pipe of blast furnace coal powder lance, which includes coal powder lance gun barrel, the jet pipe connecting with blast furnace Packet connector and the high temperature resistant ball-type non-return valve being located on the jet pipe packet connector；The coal powder lance gun barrel passes through the ball-type check Valve protrudes into the coal powder lance jack of the jet pipe packet connector.This straight blowing pipe of blast furnace coal powder lance exists in use asks as follows Topic: 1, the coal powder lance socket design due to the gun barrel diameter disunity of the coal powder lance of each producer production, in jet pipe packet connector It is bigger than normal, so that the gap between the gun barrel of coal powder lance and coal powder lance jack is excessive, so that spigot be easily caused to leak out seriously；And it sets High temperature resistant ball-type non-return valve on jet pipe packet connector, can when can have internal ball and cannot bounce in time, cause to block and fail, Personnel's burn and scald accident occurs when drawing guns；2, it due to the key area that air port is post employee's per tour inspection, checks need every time 5~8 minutes；And jet pipe packet joint has air leakage phenomena there are gap, easily causes tuyere platform gas concentration exceeded and generates Noise can greatly endanger tuyere platform regional patrol employee's health；3, coal powder lance gun barrel in use, by coal powder injection Proportion and coal rifle quality etc. influence, and the worn out phenomenon of gun barrel tube wall easily occur, pipe kind situation occur and generally stop the coal powder lance Work will cause the risk of the jet pipe packet joint mill leakage in air port if stopping coal not in time, or even also occur that belly pipe is burnt Serious accident influences the continuity of blast fumance, constitutes a threat to safety in production.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of straight blowing pipe of blast furnace coal powder lance sealing devices, to solve The problem of jet pipe packet connector of existing blast furnace and the junction of coal powder lance gun barrel are easy to appear air leakage phenomena.

The utility model technical scheme applied to solve the technical problem are as follows: this straight blowing pipe of blast furnace coal powder lance sealing device Including coal powder lance gun barrel, the jet pipe packet connector being connect with blast furnace and the high temperature resistant ball-type check being located on the jet pipe packet connector Valve；The coal powder lance gun barrel passes through the ball-type non-return valve and protrudes into the coal powder lance jack of the jet pipe packet connector, described resistance to The front end of high temperature ball-type non-return valve is equipped with turnover plate type non-return valve, and the turnover plate type non-return valve is equipped with seal nipple, institute in entrance Stating seal nipple includes joint body and the graphite packing sealing ring for being located at the joint body entrance, and the graphite packing is close Seal is equipped with the inner hole in mating connection with the coal powder lance gun barrel.

In above-mentioned straight blowing pipe of blast furnace coal powder lance sealing device technical solution, more specific technical solution may also is that described Turnover plate type non-return valve includes the valve body equipped with outlet sleeve and inlet sleeve, and the inlet sleeve is in the intracorporal end point of the valve It is hinged with import cover board.

Further: the joint body is equipped with external screw thread pipeline section in rear and front end；The graphite packing sealing ring is extremely There are two few, two graphite packing sealing rings are set on the coal powder lance gun barrel by inner hole and by internal screw thread pressing sleeves It is fitted in the front end of the joint body.

It is further: graphite packing sealing ring location hole is equipped in the internal screw thread pressing sleeve.

Further: the inlet sleeve of the valve body passes through the described outer of internal screw thread connecting tube and the joint body rear end The connection of screw thread pipeline section.

Further: the outlet sleeve and the inlet sleeve are respectively provided at the two sides of the valve body, it is described go out muzzle Pipe is arranged coaxially with the inlet sleeve；The inlet sleeve is equipped with cover board positioning in the intracorporal one end end of the valve and sinks Hole is equipped with the cover board boss plugged with the cover board positioning counterbore on the import cover board.

By adopting the above-described technical solution, the utility model have the following beneficial effects: 1 compared with prior art, by It is used in this straight blowing pipe of blast furnace coal powder lance sealing device and is equipped with turnover plate type non-return valve, turnover panel in the front end of high temperature resistant ball-type non-return valve Formula non-return valve is equipped with seal nipple in entrance, is equipped with graphite packing sealing ring in the joint body entrance that includes of seal nipple, Its graphite packing sealing ring can effectively block coal gas in furnace to leak, and avoid coal powder lance gun barrel and leak out at coal powder lance jack seriously The phenomenon that, reduce air port region noise and gas concentration；It efficiently solves air port region gas concentration and noise is exceeded asks Topic, it is ensured that the safety of patrol officer；2, it is hinged with import cover board in the intracorporal end point of valve in inlet sleeve, is sprayed when extracting When coal rifle gun barrel, first coal powder lance gun barrel can be pulled out between turnover plate type non-return valve and high-temperature resistant ball valve, it is inverse to close high temperature resistant ball-type Only valve forms first of blocking；Coal powder lance gun barrel is pulled away into seal nipple again, during which the access cover in turnover plate type check valve body Plate upper cover plate boss just covers conjunction in the cover board positioning counterbore of inlet sleeve, is allowed to form second blocking, forms the double guarantors of leakproof Danger；When being inserted into new coal powder lance gun barrel, release internal screw thread pressing sleeve first, by graphite packing sealing ring adjust to it is suitable it is elastic to prevent Only hot wind projects, then coal powder lance gun barrel is successively passed through turnover plate type non-return valve and high temperature resistant ball-type non-return valve, to after suitable position Again graphite packing sealing ring compression is prevented from leaking out by internal screw thread pressing sleeve；3, it may be implemented safely and fast to replace coal online Rifle, reach air port spray, the technical requirements of even spray；3, due to having prevented the air leakage phenomena of coal powder lance gun barrel, to extend coal Rifle service life.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment.

Fig. 2 is the structural schematic diagram of the seal nipple of the utility model embodiment.

Fig. 3 is the structural schematic diagram of the turnover plate type non-return valve of the utility model embodiment.

Specific embodiment

Below in conjunction with attached drawing, the utility model is described in further detail:

Straight blowing pipe of blast furnace coal powder lance sealing device as shown in Figure 1 includes coal powder lance gun barrel 6, the jet pipe packet connecting with blast furnace Connector 5 and the high temperature resistant ball-type non-return valve 5 being connected on 5 end of jet pipe packet connector；6 pipe of coal powder lance rifle is across ball-type non-return valve 4 Spool protrude into the coal powder lance jack of jet pipe packet connector 5, be connected with turnover plate type check in the front end of high temperature resistant ball-type non-return valve 4 Valve 3, turnover plate type non-return valve 3 include the valve body 3-2 equipped with outlet sleeve 3-5 and inlet sleeve 3-1, outlet sleeve 3-5 and Inlet sleeve 3-1 is respectively provided at the front and rear sides of valve body, and inlet sleeve 3-1 is located at the front side of valve body 3-2, outlet sleeve 3- 5 are located at the rear side of valve body 3-2；Outlet sleeve 3-5 is arranged coaxially with inlet sleeve 3-1, and inlet sleeve 3-1 is in valve body One end end in 3-2 is equipped with cover board positioning counterbore, and inlet sleeve 3-2 is in the end for being equipped with cover board positioning counterbore in valve body 3-2 It is hinged with import cover board 3-4 at head, import cover board 3-4 is hinged on bracket by pin shaft 3-3, and bracket is welded on import set On the tube wall of pipe 3-1；It is convex that the cover board plugged with the cover board positioning counterbore of inlet sleeve 3-1 is equipped on import cover board 3-4 Platform；Turnover plate type non-return valve 3 is connected with seal nipple 1 in the inlet sleeve 3-1 of entrance, and seal nipple 1 includes joint body The 1-3 and graphite packing sealing ring 1-2 for being connected to joint body 1-3 entrance, graphite packing sealing ring 1-2 is equipped with and spray Coal rifle gun barrel 6 inner hole in mating connection；The joint body 1-3 of the present embodiment is equipped with external screw thread pipeline section, valve in rear and front end The inlet sleeve 3-1 of body is connect by internal screw thread connecting tube 2 with the external screw thread pipeline section of the rear end joint body 1-3；The present embodiment Graphite packing sealing ring 1-2 there are two, two graphite packing sealing ring 1-2 are set on coal powder lance gun barrel 6 by inner hole And the front end of joint body 1-3 is fitted in by internal screw thread pressing sleeve 1-1；It is close to be equipped with graphite packing by 1-1 in internal screw thread pressing sleeve Seal location hole, graphite packing sealing ring 1-2 is mounted in there is graphite packing sealing ring positioning hole, as shown in Figures 2 and 3.

When extracting coal powder lance gun barrel, first coal powder lance gun barrel can be pulled out between turnover plate type non-return valve and high-temperature resistant ball valve, High temperature resistant ball-type non-return valve is closed, first of blocking is formed；Coal powder lance gun barrel is pulled away into seal nipple again, during which turnover plate type check Import cover board upper cover plate boss in valve body just covers conjunction in the cover board positioning counterbore of inlet sleeve, is allowed to form second resistance It is disconnected, form leakproof dual fail-safe；When being inserted into new coal powder lance gun barrel, internal screw thread pressing sleeve is unclamped first, by graphite packing sealing ring tune It is whole to suitable elastic to prevent hot wind from projecting, then coal powder lance gun barrel is successively passed through into turnover plate type non-return valve and high temperature resistant ball-type check Valve, to suitable position after again by internal screw thread pressing sleeve by graphite packing sealing ring compression prevent from leaking out.

Claims (6)

1. a kind of straight blowing pipe of blast furnace coal powder lance sealing device, including coal powder lance gun barrel, the jet pipe packet connector being connect with blast furnace and set High temperature resistant ball-type non-return valve on the jet pipe packet connector；The coal powder lance gun barrel protrudes into described across the ball-type non-return valve In the coal powder lance jack of jet pipe packet connector, it is characterised in that: it is inverse to be equipped with turnover plate type in the front end of the high temperature resistant ball-type non-return valve Only valve, the turnover plate type non-return valve are equipped with seal nipple in entrance, and the seal nipple includes joint body and is located at described The graphite packing sealing ring of joint body entrance, the graphite packing sealing ring, which is equipped with, matches company with the coal powder lance gun barrel The inner hole connect.

2. straight blowing pipe of blast furnace coal powder lance sealing device according to claim 1, it is characterised in that: the turnover plate type non-return valve Valve body including being equipped with outlet sleeve and inlet sleeve, the inlet sleeve are hinged with access cover in the intracorporal end point of the valve Plate.

3. straight blowing pipe of blast furnace coal powder lance sealing device according to claim 2, it is characterised in that: the joint body is in preceding Both ends are equipped with external screw thread pipeline section afterwards；The graphite packing sealing ring at least there are two, two graphite packing sealing rings are logical Cross the front end that inner hole is set on the coal powder lance gun barrel and is fitted in the joint body by internal screw thread pressing sleeve.

4. straight blowing pipe of blast furnace coal powder lance sealing device according to claim 3, it is characterised in that: in the internal screw thread pressing sleeve It is interior to be equipped with graphite packing sealing ring location hole.

5. straight blowing pipe of blast furnace coal powder lance sealing device according to claim 4, it is characterised in that: the import set of the valve body Pipe is connect by internal screw thread connecting tube with the external screw thread pipeline section of the joint body rear end.

6. straight blowing pipe of blast furnace coal powder lance sealing device according to claim 5, it is characterised in that: the outlet sleeve and institute The two sides that inlet sleeve is respectively provided at the valve body are stated, the outlet sleeve is arranged coaxially with the inlet sleeve；It is described into The intracorporal one end end of valve described in muzzle Guan Yu is equipped with cover board positioning counterbore, and it is fixed with the cover board to be equipped on the import cover board The cover board boss that position counterbore plugs.