CN219233938U - Kiln car for mould shell roasting furnace in precision casting industry - Google Patents

Abstract

The utility model discloses a kiln car for a mould shell roasting furnace in the precision casting industry, which solves the problems that the kiln car is blocked, the kiln car cannot be folded normally, a kiln body is scratched, a stepper is blocked and the like due to molten steel overflow in the prior art, and is characterized in that: the kiln car body comprises kiln car frame plates, cast iron sand seal cutters, kiln car coamings, light fire-resistant heat-insulating layers, kiln car propelling devices and car seals, wherein the kiln car frame plates are welded on a kiln car underframe, the cast iron sand seal cutters and the kiln car coamings are connected to the kiln car frame plates through heat-resistant fasteners, the light fire-resistant heat-insulating layers are paved in the kiln car body, the formed kiln car table top is lower than the kiln car coamings, the kiln car propelling devices are symmetrically arranged on the bottom surfaces of two sides of the kiln car underframe, and car seals (7) are arranged at two ends of the kiln car coamings. Has the advantages of reasonable structure, normal operation, energy conservation, consumption reduction, life prolonging and the like, and has good popularization and application values.

Description

Kiln car for mould shell roasting furnace in precision casting industry

Technical Field

The utility model belongs to the field of thermal equipment, and particularly relates to a kiln car for a mould shell roasting furnace in the precision casting industry.

Background

In the field of mould shell roasting furnaces in the precision casting industry, a traditional kiln car is built by adopting refractory bricks, a table top is a plane, and the periphery of the masonry is not surrounded. The red shell is Wen Chulu, and the kiln car enters a casting area from a high-temperature environment to a normal-temperature environment, so that the kiln car masonry is deformed and cracked due to large temperature difference. In the processes of shell making, shell blank transferring and the like, dark cracks (with small proportion and very difficult recognition) of the shells are inevitably caused, and once the shells are cracked in the casting process, molten steel flows onto a table top (fire running phenomenon), and the molten steel flows down due to no surrounding of the table top. Many problems often occur with kiln cars in this state: 1. molten steel remained on brickwork and steel frame in front and back direction of kiln car is solidified, so cleaning is not easy, and after front and back kiln cars are closed, gaps are formed, after kiln car is put into kiln, the upper fire is strung under kiln car along gaps, so that fire-crossing phenomenon occurs, steel frame deformation is caused by fire-crossing, kiln car bearing is high Wen Kasi, and kiln car can not normally advance; 2. the kiln body is scratched in the advancing process after the molten steel left and right of the kiln car masonry is solidified; 3. molten steel flows onto the stepper below the kiln car, so that the movable force plate and the chain of the stepper are blocked, the stepper cannot normally operate, and the stepper is difficult to repair in a heat radiation environment of a casting area.

The conditions lead to high maintenance frequency of kiln car brickwork, steel frames, axles, steppers and the like, high maintenance cost, serious restrictions on production efficiency and high production cost.

Disclosure of Invention

The utility model aims to provide a kiln car for a mould shell roasting furnace in the precision casting industry, which has the advantages of reasonable structure, normal operation, energy conservation, consumption reduction and life prolonging.

The technical scheme of the utility model is as follows: the kiln car comprises a kiln car underframe, a car body, wheels, a kiln car table top and the like, wherein the car body is composed of a kiln car frame plate, a cast iron sand seal knife, a kiln car coaming, a light fire-resistant heat-insulating layer, a kiln car propelling device and a car seal. The kiln car frame plate is welded on the kiln car underframe, the cast iron sand seal knife and the kiln car coaming are connected to the kiln car frame plate through heat-resistant fasteners, a light fire-resistant heat-insulating layer is paved between the kiln car underframe and the kiln car frame plate and between the kiln car coaming, and the formed kiln car table surface is about 50mm lower than the upper edge opening of the kiln car coaming. The kiln car coaming is cast by heat-resistant stainless steel to form a rectangular plate, and comprises four rectangular blocks, namely a front right angle block, a rear right angle block, a front right angle block, a rear left angle block, two side blocks and a front side block and a rear side block. Kiln car propelling devices are symmetrically arranged on the bottom surfaces of two sides of the kiln car underframe, each kiln car propelling device comprises a fixed plate, a movable force-exerting plate, a pin shaft, a baffle plate and the like, two fixed plates are respectively welded to form a support at the symmetrical positions of the bottom surfaces of two sides of the kiln car underframe, the movable force-exerting plates are hinged with the supports into a whole through the pin shafts, and the baffle plates are fixedly welded on the fixed plates at the rear sides of the movable force-exerting plates and the kiln car underframe. The kiln car frame plate is provided with car seals at the front and back, the car seals are made of fireproof heat-insulating cotton and are fixed by iron nails welded on the kiln car frame plate.

The mould shell is placed on the table surface of the kiln car, and the stepping machine pushes the kiln car to a casting area through a movable force plate of a kiln car pushing device arranged at the bottom of the kiln car for online casting. The kiln car coaming is cast by heat-resistant stainless steel, and once molten steel flows out in the casting process, the coaming can retain the molten steel in the coaming, so that the kiln car can work normally; the movable force-exerting plate can rotate around a pin shaft fixedly arranged on the support, so that the stepping machine can drive the kiln to advance and stop; the car seal is made of refractory fiber blanket, and when the kiln car is closed, the car seal not only can protect the kiln car through extrusion deformation buffer, but also can play a role in sealing, so that the fire on the kiln car is prevented from being strung under the kiln car. In addition, a light refractory heat-insulating layer is arranged between the underframe and the coaming, so that the weight of the kiln car can be reduced, the heat accumulation of the kiln car can be reduced, and the energy consumption of the kiln can be reduced.

The utility model has the beneficial effects that: once the molten steel flows out in the casting area, the kiln car coaming can control the molten steel in the coaming, so that the kiln car can work normally. The stepping machine drives the kiln to advance and stop through the movable force plate, and even if molten steel flows down, the normal operation of the stepping machine is not affected. The car seal can ensure the kiln car to be stably folded, and prevent the fire from being strung under the kiln car. The light fireproof heat-insulating layer can reduce the weight of the kiln car, reduce the heat accumulation of the kiln car and reduce the energy consumption of the kiln. The device has the advantages of reasonable structure, normal operation, energy conservation, consumption reduction, service life prolongation and the like, and can bring good economic benefit to production enterprises by popularization and application, and has very broad market prospect.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a front view structure of the present utility model;

FIG. 2 is a right side view of the present utility model;

FIG. 3 is a schematic diagram of a front view structure of a kiln car propulsion device;

FIG. 4 is a right-side view structure schematic diagram of the kiln car propelling device;

FIG. 5 is a schematic diagram of a vehicle seal structure when the kiln car is folded;

FIG. 6 is a schematic diagram of a top view structure of a kiln car shroud of the present utility model.

In the figure: the kiln car comprises a kiln car chassis 1, kiln car frame plates 2, cast iron sand seal knives 3, kiln car coamings 4, light refractory heat insulation layers 5, kiln car propelling devices 6, car seals 7, wheels 8, kiln car table tops 9, movable force plates 10, pin shafts 11, fixed plates 12, baffle plates 13, front left and right corner blocks 41, front right and rear left corner blocks 42, two side edge blocks 43 and front and rear edge blocks 44.

Detailed Description

The technical solution of the present utility model will be described in further detail below with reference to the accompanying drawings and by way of examples of some alternative embodiments of the present utility model.

The mould shell is placed on a kiln car table 9, and a stepper pushes the kiln car to a casting area through a movable force plate 10 of a kiln car pushing device 6 to perform online casting. Kiln car shroud 4 is cast in a right angle shape using heat resistant stainless steel, and includes four types of right angle shroud, front left and rear right angle blocks 41, front right and rear left angle blocks 42, both side blocks 43, and front and rear side blocks 44. A square frame is surrounded on the periphery of the kiln car body through heat-resistant fasteners, and a kiln car table top 9 formed by a light fire-resistant heat-insulating layer 5 paved between the kiln car underframe 1, the kiln car frame plate 2 and the kiln car coaming 4 is lower than the kiln car coaming 4. Once molten steel flows out in the casting process, the coaming can control the molten steel in the coaming, so that the kiln car can work normally. The movable force plates 10 of the kiln car propelling device 6 can rotate clockwise around the pin shafts 11 fixed on the supports on two sides of the kiln car chassis 1 and cannot rotate anticlockwise, so that the stepping machine can drive the kiln car to advance and stop. The car seals 7 are made of refractory fiber blankets and are fixed at the head end and the tail end of the kiln car through iron nails welded on the kiln car frame plates 2. The car seal 7 not only can protect the kiln car through extrusion deformation buffer, but also can play a role in sealing, so that the fire on the kiln car is prevented from being strung under the kiln car. In addition, a light refractory heat-insulating layer 5 is paved between the kiln car underframe 1 and the kiln car coaming 4, so that the weight of the kiln car can be reduced, the heat accumulation of the kiln car can be reduced, and the use energy consumption of the kiln is reduced.

Specifically, as shown in fig. 1-6, the kiln car structure of the embodiment of the utility model comprises a kiln car underframe 1, a kiln car frame plate 2, a cast iron sand seal cutter 3, a kiln car coaming 4, a light fire-resistant heat-insulating layer 5, a kiln car propelling device 6, a car seal 7 and the like. The kiln car frame plate 2 is welded on the kiln car underframe 1, the kiln car sand seal knife 3 and the kiln car coaming 4 are connected to the kiln car frame plate 2 by heat-resistant fasteners, the light refractory heat-insulating layer 5 is paved between the kiln car underframe 1 and the kiln car frame 2 and the kiln car coaming 4, and the mould shell is placed in the range of a broken line. Kiln car propelling devices 6 are symmetrically arranged on two sides of the kiln car underframe.

It can be understood that, because the kiln car coaming 4 is cast by heat-resistant stainless steel and the peripheral edge is higher than the kiln car table 9, once molten steel flows out in the casting process, the kiln car coaming 4 can control the molten steel within the range of the kiln car table 9 in the coaming, and thus the flowing molten steel can not influence the normal operation of the kiln car. The stepping machine drives the kiln car to advance and stop through a movable force-exerting plate 10 on the kiln car propelling device 6, the movable force-exerting plate 10 is movably hinged on a support formed by two fixed plates 12 fixedly welded on the bottom surface of the kiln car chassis 1 through a pin shaft 11, and the movable force-exerting plate 10 can rotate around the pin shaft 11 for a certain angle. A baffle 13 is welded on the fixed plate 12 at the left side of the movable force-exerting plate 10 and the kiln car underframe 1, when the stepper pushes the movable force-exerting plate 10 to advance, the fixed baffle 13 blocks the movable force-exerting plate 10, and pushes the kiln car and the stepper to advance together; when the stepper moves backward, the movable force plate 10 rotates a certain angle to allow the movement, and the kiln car is in a stop state. The car seals 7 are made of fire-resistant heat-insulating cotton and are fixed at the head end and the tail end of the kiln car through iron nails welded on the frame plates of the kiln car. When the kiln car is folded, the car seal not only can protect the kiln car through extrusion deformation buffer, but also can play a role in sealing, and prevent the fire on the kiln car from being strung under the kiln car. The light fireproof heat-insulating layer not only can lighten the weight of the kiln car, but also can reduce the heat accumulation of the kiln car and reduce the energy consumption of the kiln.

The foregoing description is merely illustrative of specific embodiments of the present utility model, but the present utility model is not limited to these specific embodiments, and any changes or modifications within the scope of the present utility model are intended to be included in the present utility model.

Claims (4)

1. The utility model provides a kiln car for precision casting trade mould shell calcination stove, it includes kiln car chassis (1), automobile body, wheel (8) and kiln car mesa (9), its characterized in that: the car body comprises a kiln car frame plate (2), a cast iron sand seal knife (3), a kiln car coaming (4), a light refractory heat-insulating layer (5), kiln car propelling devices (6) and car seals (7), wherein the kiln car frame plate (2) is welded on the kiln car underframe (1), the cast iron sand seal knife (3) and the kiln car coaming (4) are connected on the kiln car frame plate (2) through heat-resistant fasteners, the light refractory heat-insulating layer (5) is paved between the kiln car underframe (1) and the kiln car frame plate (2) and the kiln car coaming (4), the formed kiln car table surface (9) is lower than the kiln car coaming (4), the kiln car propelling devices (6) are symmetrically arranged on the bottom surfaces of two sides of the kiln car underframe (1), and the car seals (7) are arranged at two ends of the car coaming (4).

2. The kiln car for a formwork roasting furnace in the precision casting industry as claimed in claim 1, wherein: kiln car advancing device (6) comprises fixed plate (12), activity adhesion plate (10), round pin axle (11) and baffle (13), adopts two fixed plates (12) to weld into the support respectively in kiln car chassis (1) both sides bottom surface symmetry position, and activity adhesion plate (10) are articulated into an organic whole with the support through round pin axle (11), and baffle (13) fixed welding is on fixed plate (12) and kiln car chassis (1) of activity adhesion plate (10) rear side.

3. A kiln car for a mould shell roasting furnace in the precision casting industry according to claim 1 or 2, characterized in that: the car seal (7) is made of fireproof heat-insulating cotton and is fixed at the head end and the tail end of the kiln car through iron nails welded on the kiln car frame plate (2).

4. A kiln car for a mould shell roasting furnace in the precision casting industry as claimed in claim 3, wherein: kiln car table top (9) is 2~4cm lower than kiln car bounding wall (4) upper edge mouth, and kiln car bounding wall (4) adopt heat-resisting stainless steel to cast into right angle shaped plate, including four kinds of right angle shaped blocks in front left and back right angle shaped block (41), front right and back left angle shaped block (42), both sides limit piece (43) and front and back limit piece (44).

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