CN2177728Y

CN2177728Y - Waterless-cooled hot-blast valve

Info

Publication number: CN2177728Y
Application number: CN 93235729
Authority: CN
Inventors: 李红继
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-31
Filing date: 1993-12-31
Publication date: 1994-09-21
Anticipated expiration: 2003-12-31

Abstract

The utility model discloses a new hot-blast valve which changes the structure and materials of the existing hot-blast valves. The valve body of the hot-blast valve is formed into a double-layer structure by an outer shell and an inner lining cavity, and the inner lining cavity is stacked by refractory materials; the valve body is welded to be connected with a pipeline; a valve plate is connected into a movable joint structure by a valve rod and a valve handle by pins through a connecting piece in a movable matching mode; the valve handle is tightly clung to one side of the inner wall of the inner lining cavity; the top cover of the hot-blast valve is provided with a sealing pad made of aluminium silicate fiber materials, etc. The hot-blast valve works under the temperature of 1000 DEG C without cooling by water and gas, and thus each blast furnace saves water 420, 000 ton; without a water pump, the utility model saves electricity more than 50 thousand degrees, and the fabrication cost is 2 / 3 of the existing products. With favorable sealing property and reliable work, the utility model enhances the product quality of blast furnaces.

Description

Waterless-cooled hot-blast valve

The utility model relates to that a kind of the ingress that is specially adapted to be installed in the small furnace hotblast stove below 1000 ℃ makes combustion valve without the novel high wind-warm syndrome hot blast valve of refrigerative, and the exit is made hot blast valve and used.

Existing hot blast valve adopts the ordinary steel cast welding to form, and adopts water cooling.This valve is because incrustation scale influences, and work-ing life is short, and general per season damping down maintenance has a strong impact on the production run of small furnace, and consumes a large amount of water coolings, and weak points such as difficult are changed in maintenance.

The disclosed novel evaporative cooling high wind temperature hot blast valve CN85100769B of prior art, its valve seat and valve plate adopt the forced vaporization cooling, soon squeeze into hot blast valve with hot water pump near the boiler soft water hot water of transformation temperature, utilize the vaporization of water to absorb heat in a large number and strengthen the cooling heat water valve, but its complex structure, the cost height, the vaporization cooling still need consume a large amount of weak points such as water.

The present utility model purpose, in order to overcome the prior art weak point, propose a kind of simple in structure, cost is low, maintenance is easy, can under 1000 ℃ of temperature, work, without the refrigerative new type hot air valve in BF.

The technical scheme of the anhydrous cooling heat air-valve of the utility model mainly comprises valve body, valve plate, valve gap, it is characterized in that:

1, the bilayer structure be made up of shell and liner courage of valve body, the liner courage is built into refractory materials, generally is built into rectangle and easily makes.The shell of valve body connects with the pipeline welding.

2, valve plate is connected into the articulated type structure with Xiao Zi by valve rod, valve handle two parts respectively movingly by web member, and valve handle is skeleton with the steel wire, the ceramic valve handle that adopts heat resisting ceramic materials to make, and inwall one side of valve handle and valve body liner courage is fitted tight.

3, on the valve top cover gasket made from the aluminum silicate fiber material is housed.

Accompanying drawing below in conjunction with embodiment is described further.

Fig. 1 is the utility model hot blast valve one-piece construction front view;

Fig. 2 is the utility model hot blast valve one-piece construction A-A sectional view;

Fig. 3 is the utility model hot blast valve one-piece construction B-B sectional view;

Fig. 4 is the utility model hot air valve plate assembling front view;

Fig. 5 is the utility model hot air valve plate assembling side elevation;

Fig. 6 is the utility model hot blast valve valve handle front view;

Fig. 7 is the utility model hot blast valve valve handle side-view;

Fig. 8 is the utility model hot air valve plate web member front view;

Fig. 9 is the web member side-view of the utility model hot air valve plate;

Figure 10 is the utility model hot blast valve valve handle displacement Xiao figure;

Figure 11 is the utility model hot blast valve tuyere brick front view;

Figure 12 is the utility model hot blast valve pipeline brick front view;

Detailed description of main elements:

Shell (1), liner courage (2), valve rod (3), valve handle (4), web member (5), valve rod Xiao (6), valve handle displacement Xiao (7), dop (8), valve top cover (9), valve gap (10), heat insulation felt (11), seal washer (12), gland (13), tuyere brick (14), tube head brick (15), standard square (16).

Fig. 1,2,3 is the utility model hot blast valve one-piece construction figure, mainly be made up of valve body, valve handle, valve gap etc., valve body is by shell (1), liner courage (2) bilayer structure, and liner courage (2) is built into refractory materials, present embodiment liner courage (2) is built into rectangle as shown in Figure 3, very easily makes.When building liner courage (2),, adopt the difform refractory brick of different refractory materialss according to the position difference of valve body, as tuyere brick (14) as shown in figure 14, tube head brick (15) as shown in figure 12, standard square (16) etc.Use (14) two of tuyere bricks that superfine high aluminium material forms at the import and export place and be built into some of the tube head bricks (15) that the secondary high aluminium material is made, so that the liner courage (2) at valve body import and export place has high-temperature stability, thus not water, vapour cooling.The standard square (16) that other position of liner courage (2) adopts three grades of high aluminium materials to make is built into.

Fig. 4,5 is the valve plate assembly drawing, and valve plate uses valve rod Xiao (6), valve handle displacement Xiao (7) to be connected into the articulated type structure movingly by valve rod (3), valve handle (4) two parts respectively by web member (5).Its tolerance clearance still moves axially with valve handle (4) after guaranteeing thermal expansion greater than 2mm.After the valve plate assembling, firm with the electric welding welding in the both ends of the surface of Xiao (6), (7).

Valve rod (3) is made with high temperature steel or cast iron, and the upper end of valve rod (3) is installed dop (14) as shown in Figure 1, 2.

Fig. 6,7 is valve handle figure, and valve handle (4) is skeleton with the steel wire, makes platypelloid type pottery valve handle with superfine high alumina refractory.

Fig. 8,9 is web member figure, makes with heat-resisting steels, and the hole of wherein wearing valve handle displacement Xiao (7) is a conical hole.

Figure 10 makes with heat-resisting steel material for valve handle displacement Xiao figure, and displacement Xiao's stage casing is a vertebra shape.

This articulated type valve board structure, when air-supply, hot-blast pressure makes valve handle (4) do parallel moving, and it is tight to fit all the time between the inwall of the liner courage (2) of assurance valve handle (4) and valve body, thereby makes hot blast valve close good seal performance.

Shown in Fig. 1,2, at valve top cover and valve rod junction gasket (12) is housed, be fixed with gland (13).Gasket (12) adopts the aluminum silicate fiber material to make, and can bear 1000 ℃ of sealings under the wind-warm syndrome condition fully.Than routine curl method not only standard but also standard with asbestos cord etc., be difficult for gas leakage, again can be high temperature resistant.

The utility model hot blast valve connects with pipeline, adopts housing and pipeline directly to weld, and has stopped to run the disadvantage of leaking out completely herein.More reliable than the blue dish of enamel, Bolt Connection method, because of the lock packing between the ring flange often be difficult for pad tight, be prone to the race air leakage phenomena.

The advantage of the utility model hot blast valve:

1, without water cooling, brownout.The import and export place of valve body adopt superfine high alumina refractory to make to have anti-more than 1000 ℃ hot properties, so need not cool off, every blast furnace is economized on water 420,000 tons, does not need water pump, more than every economize on electricity 50,000 degree.

2, simple in structure, cost is low.Liner courage (2) as valve body adopts refractory materials to be built into, and very easily makes, and every cost only is 1/3 of an ordinary steel casting valve.

3, good airproof performance.Adopt multiple seal approach, make the articulated type structure, utilize the thermal air pressure force method, make valve handle parallel mobile, guaranteed that a side of valve handle and liner courage inwall is fitted tightly all the time as valve plate; Valve body connects with the pipeline welding process for another example; Add seal washer on the valve top cover and replace unconventional asbestos twine etc. to curl measure, make this valve closes tight, non-leakage water, do not become flat.

4, reliable operation, life-span are long, and maintain and replace is easy.Under 1000 ℃ of conditions of blast furnace working temperature, longer than the ordinary hot air-valve life-span.

5, can improve product percent of pass.Because of this hot blast valve need not cool off, no leakage source, the not blast furnace fluctuation that can leak and cause because of hot water valve, it is defective to influence product, so the raising product percent of pass that letter connects.

Claims

1, a kind of novel anhydrous cooling heat air-valve mainly comprises valve body, valve plate, valve gap, it is characterized in that:

1) bilayer structure formed by shell and liner courage of valve body, the shell of valve body connects with the pipeline welding;

2) valve plate connects the articulated type structure with Xiao Zi by valve rod, valve handle two parts respectively movingly by web member, and inwall one side of valve handle and liner courage is fitted tight.

2, hot blast valve according to claim 1 is characterized in that: the liner courage of valve body is built into refractory materials.

3, hot blast valve according to claim 1 is characterized in that: the valve handle of valve plate is skeleton with the steel wire, makes with heat resisting ceramic materials.