CN2118961U

CN2118961U - Bell-jar annealing furnace

Info

Publication number: CN2118961U
Application number: CN 91227912
Authority: CN
Inventors: 李致金
Original assignee: HARBIN INDUSTRIAL KILN UNITE Co
Current assignee: HARBIN INDUSTRIAL KILN UNITE Co
Priority date: 1991-11-11
Filing date: 1991-11-11
Publication date: 1992-10-14

Abstract

The utility model provides a bell-jar annealing furnace. The size of the existing annealing furnace in use is smaller and can not realize the annealing of a large-size workpiece. The utility model provides an annealing furnace for annealing a large-size workpiece, which is divided into an upper part and a lower part. A base plate is completely fiberized and is provided with a set of heat-resisting cast iron, and the lower part of the base plate is provided with a railway car which can be lifted and fallen. Two sets of refractory fibre are arranged in a bell jar, the inner layer is horizontally laid by cheap refractory fibre and the outer layer is provided with folding refractory fibre. The fibre is fixed by threaded rods, and the lower side of the bell jar is provided with a set of aluminum silicate vacuum forming combustion nozzles.

Description

Bell-jar annealing furnace

The utility model relates to a kind of annealing furnace, particularly a kind of bell-jar annealing furnace.

The annealing furnace kind that is made now is a lot, but that these annealing furnaces can be handled workpiece is less, is very difficult to some annealing as the large hydropower station hydroturbine rotor, processes large diameter annealing furnace, the sealing of stove, and the weight of body of heater, the thermal efficiency is the solution of difficulty all.

The purpose of this utility model is to provide a kind of major diameter, and good seal is in light weight, the annealing furnace that the thermal efficiency is high.

The purpose of this utility model is achieved in that stove is divided into chassis and bell jar shell two parts, in the inside of bell jar is the two-layer refractory fibre longer than bell jar, downside at bell jar has one group of alumina silicate vacuum forming burner, the refractory fibre of this stove has two-layer, near the bell jar body of heater is the cheap refractory fibre of one deck tiling, it in it folding refractory fibre of one deck, the termination has the annulus of screw rod of annulus in folded fibre, opposite side stretches out the outside of bell jar, heat-resisting steel pole longitudinally passes the folding refractory fibre and the annulus of screw end head, at this moment the screw rod external part is tightened with nut, two-layer fiber is being attached on the bell jar tightly just, the chassis of this stove is full fiber, stretch out one group of heat-resisting cast iron piece at an upper portion thereof, the refractory brick that same groove is arranged below each heat-resisting cast iron piece, a liftable railcar is arranged under the chassis, this railcar can be carried out the chassis, after being contained in the part of waiting to anneal, sending the original place back to falls and withdraws from, and bell jar is sling by crane, and when the chassis installs workpiece when sending original position back to, bell jar descends, the fibrage compressive deformation that grows has reached the purpose that seals.

The utility model has the advantages that: good sealing effect, high insulating effect adopts and screw rod anchoring fiber layer, has effectively prevented coming off of fiber, adopts picking and placeing conveniently of alumina silicate vacuum forming burner spare.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is a screw rod anchoring fiber layer partial schematic diagram;

Fig. 3 is an alumina silicate vacuum forming burner schematic diagram.

Embodiment:

The chassis 9 of this stove and bell jar 15 are two bodies, two-layer fiber is arranged in the bell jar 15, this two-layer fiber grows one section than bell jar 15, near bell jar 15 are cheap refractory fibres 14 of one deck tiling, it in it refractory fibre 10 that folds, this two-layer refractory fibre is to be fixed on the bell jar 15 by the screw rod 12 that the termination has an annulus, its fixed form is that the annulus with screw rod 12 terminations is placed in the folding refractory fibre 10, the other end passes refractory fibre 14 and bell jar 15 and stretches out same nut and link to each other, heat-resisting steel pole 18 longitudinally passes the annulus of folding refractory fibre 10 and screw rod 12 terminations, the chassis 9 of this stove is full fiber, stretch out one group of heat-resisting cast iron piece 6 thereon, each heat-resisting cast iron piece 6 all is sitting on the refractory brick 17 that same groove arranged, and a liftable railcar 7 is arranged below furnace hearth plate 9.

Claims

1, a kind of bell-jar annealing furnace, it comprises chassis 9, bell jar 15, refractory fibre, burner 16, it is characterized in that:

The refractory fiber floor of this stove of a grows one section than bell jar;

This stove of b has adopted alumina silicate vacuum forming burner 6.

2, a kind of bell-jar annealing furnace according to claim 1 is characterized in that: on full fiber chassis 9 one group of heat-resisting cast iron piece 6 is being arranged, each heat-resisting cast iron piece 6 all is sitting on the refractory brick 17 that same groove arranged.

3, a kind of bell-jar annealing furnace according to claim 1, it is characterized in that: are one deck cheap refractory fibres 14 that tile in bell jar 15 inboards, its inboard is the refractory fibre 10 that folds, the termination has the screw rod 12 of annulus, its annulus is in folded fibre 10, the other end stretches out outside the bell jar 15, and heat-resisting steel pole 18 longitudinally passes the annulus of folding refractory fibre 10 and screw rod 12 terminations.

4, a kind of bell-jar annealing furnace according to claim 1 is characterized in that: have for 9 times a liftable to carry chassis 9 moving track cars 7 at furnace hearth plate.