TWI604059B - Water-cooled drum bushing - Google Patents

Description

Water-cooled roller bushing

The present invention relates to a roller bushing for use in steelmaking operations, and more particularly to a water-cooled roller bushing.

In the general steelmaking raw material processing workshop, when the slag granulation production is carried out, please refer to the one shown in Fig. 6. The high temperature liquid slag must be poured from a tilting machine 50 through a bushing 60 into a drum 70, and then through The drum 70 treats the high temperature liquid slag into solid slag particles having a particle size of less than 100 mm to facilitate the subsequent process. However, in the process of pouring the high temperature liquid slag, the inner wall of the liner 60 is in contact with the high temperature liquid slag to absorb the slag. The heat causes the temperature of the liner 60 itself to rise continuously to about 750 ° C or higher, and the temperature of the outer wall of the liner 60 is also higher than 550 ° C, so that the thermal stress or thermal shock and the bending of its own weight are caused by the high temperature for a long time. The influence of stress will cause cracks in the inner wall of the bushing, and the crack will grow rapidly and crack to the outer wall surface, causing the material to be stopped and the production to be stopped. In addition, because the temperature of the bushing 60 is too high, it needs to be cooled before it can be For the next slag dumping operation, the conventional liner 60 is generally cooled by air cooling, and takes about 30 to 50 minutes, so that the overall efficiency of the slag processing operation is affected.

Therefore, the present inventors have finally developed a present invention which can improve the existing deficiency, in view of the lack of structure and use of the conventional drum bushing, through continuous experimentation and research.

The main object of the present invention is to provide a water-cooled roller bushing which can effectively reduce the temperature of the inner and outer walls of the bushing and prevent the bushing from being broken due to thermal stress or thermal shock, thereby improving the slag processing production efficiency and extending the lining. The purpose of the service life.

In order to achieve the above object, the water-cooled roller bushing of the present invention mainly comprises a cylindrical body, and at least one cooling water channel is disposed on the outer side surface of the body, and the cooling water channels are arranged in a curved shape on the outer surface of the body, and There are at least one water inlet and at least one water outlet, and the other cooling water channels are composed of several L-shaped angle steels, one end of each L-shaped angle steel is directly fixed to the outer side of the body, and the other end is adjacent to the adjacent one. The L-shaped angle steel is fixedly connected, wherein the system is composed of a half-arc cylindrical receiving portion and a semi-circular cylindrical splash-proof cover, and the at least one cooling water channel is disposed on the outer surface of the receiving portion.

According to the above technical means, the cooling water channel of the present invention can directly contact the cooling liquid with the outer side surface of the receiving portion, and the cooling water channel is composed of L-shaped angle steel, so that the channels in the cooling water channel can be closely contacted, except for L. In addition to the thickness of the angled steel itself, there is no gap between the channels of the cooling water channel, and the contact area between the coolant and the outer side of the receiving portion can be increased, and the overall cooling efficiency is improved to improve the cooling effect of the bushing to avoid The bushing may cause cracks or the like due to factors such as thermal stress or thermal shock, and the service life of the bushing may be prolonged, and the bushing may be continuously and continuously subjected to the slag pouring operation to improve the work efficiency of the overall slag processing operation.

10‧‧‧Receiving Department

12‧‧‧Fixed flange

14‧‧‧Fixed ring

16‧‧‧Fixed tablets

18‧‧‧ Positioning convex

20‧‧‧Cooling waterway

22‧‧‧ water inlet

24‧‧‧Water outlet

30‧‧‧ splash cover

40‧‧‧ Thermal insulation board

42‧‧‧fixed slot

50‧‧‧Tipping machine

60‧‧‧ bushing

70‧‧‧Roller

Figure 1 is a front view of the invention.

Figure 2 is a side view of the invention.

Figure 3 is a front elevational view of the receptacle of the present invention after deployment.

Figure 4 is an enlarged cross-sectional view of the end of the present invention.

Figure 5 is an enlarged side elevational view of the present invention.

Figure 6 is a schematic view of the existing slag dumping operation.

The present invention relates to a water-cooled roller bushing, please refer to FIG. 1 to FIG. 3. As can be seen from the figure, the bushing of the present invention mainly comprises a cylindrical body, which can be a single cylinder. The member can also be combined into a cylindrical body by a half-arc cylindrical receiving portion 10 and a half-circular cylindrical splash-proof cover 30 as shown. One end of the receiving portion 10 and the splash guard 30 can form a larger diameter enlarged end, and the enlarged end is connected by a funnel member to receive the high temperature slag dumped by the tilting machine, and the receiving portion 10 At least one cooling water channel 20 is disposed on the outer side surface of the receiving portion 10, wherein the outer surface of the receiving portion 10 is provided with two sets of cooling water channels 20. Further, each of the cooling water passages 20 is linearly curved on the outer surface of the receiving portion 10, and has at least one water inlet 22 and at least one water outlet 24, and each of the cooling water passages 20 is composed of a plurality of L-shaped angle steels, such as As shown in Fig. 4, one end of each L-shaped angle steel is directly fixed to the outer side surface of the receiving portion 10 by welding or the like, and the other end is fixedly connected to the adjacent L-shaped angle steel by welding or the like.

Moreover, the length of the splash cover 30 can be shorter than the length of the receiving portion 10, wherein the splash cover 30 can be integrally formed on the receiving portion 10, or can be fixedly coupled to the receiving portion 10, and the splash cover 30 is fixed on the cover portion 30. When the receiving portion 10 is used, please refer to FIG. 2 and FIG. 4 , a fixing flange 12 can be respectively protruded on both side edges of the receiving portion 10 , and the two sides of the splash-proof cover 30 abut against the receiving portion 10 . After the two side edges, the splash cover 30 can be abutted against the fixing flange 12 of the receiving portion 10, and then the outer peripheral surface of the splash cover 30 is provided with a plurality of fixing rings 14, and the two ends of each fixing ring 14 can be respectively The two sides of the receiving portion 10 are fixed by welding or the like. Thus, by the mutual engagement of the fixing flange 12 and the fixing ring 14, the splash-proof cover 30 can be clamped and connected to the receiving portion 10 to form a cylindrical body.

In use, please refer to FIG. 1 , FIG. 2 and FIG. 4 , the coolant source can be connected to the water inlet 22 of each cooling water channel 20 , and the water outlet 24 of the cooling water channel 20 can be connected to a cooling device. The coolant is introduced into the cooling water channel 22 from the water inlet 22 of the cooling water channel 20. At this time, since the L-shaped angle steel of the cooling water channel is directly fixed to the outer surface of the receiving portion 10, the coolant in the cooling water channel 20 can be directly Direct contact with the outer side of the receiving portion 10, and because of the thickness of the L-shaped angle steel between the channels in the cooling water passage 20, there is no space between the channels, which can increase the density of the passage of the cooling water passage 20, and let the cooling The coolant in the water channel 20 can effectively absorb the high temperature and heat generated by the bushing during the dumping operation, and since the cooling water channel 20 is composed of L-shaped angle steel, the channels in the cooling water channel 20 can be closely contacted. Moreover, the contact area between the coolant and the outer side surface of the receiving portion 10 can be increased, and the heat dissipation efficiency of the whole bushing is improved, and the outer surface of the bushing has a good heat absorption and temperature lowering effect, so that the temperature of the inner and outer wall surfaces of the bushing can be increased. Effectively reduce the occurrence of cracks in the bushing and extend the life of the bushing as a whole.

Further, since the temperature of the bushing can be effectively reduced by the arrangement of the cooling water passage 20, the next pouring operation can be quickly performed without waiting for the cooling time of the bushing for a long time after the completion of one pouring operation, which is effective. Improve the production efficiency of slag processing operations.

Further, since the main body of the present invention can be combined by the receiving portion 10 and the splash-proof cover 30, it is possible to prevent the temperature difference between the upper and lower sides of the main body from being excessively large, thereby causing stress to be broken and broken, and the life of the entire drum bushing can be prolonged.

In addition, please refer to FIG. 4 and FIG. 5 , a plurality of heat insulation boards 40 may be disposed on the inner side surface of the receiving part 10 , and a telescopic gap is formed between the two adjacent heat insulation boards 40 , and each heat insulation board 40 may be carbon material. When the heat insulating plate 40 is fixed to the receiving portion 10, a plurality of laterally disposed fixing pieces 16 may be protruded from the inner side surface of the receiving portion 10, and one side of each of the heat insulating plates 40 may be recessed. A fixing groove 42 which is sleeved on one of the fixing pieces 16 is attached, and a plurality of positioning protrusions 18 which are longitudinally disposed and respectively abut against the side wall surface of the heat insulating plate 30 are protruded on the inner side surface of the receiving portion 10 by fixing The sheet 16 and the positioning convex portion 18 can securely fix the respective heat insulating panels 40 on the inner side surface of the receiving portion 10.

In this way, when the high temperature slag is poured into the bushing, the high temperature slag is in contact with the heat insulating plate 40 without directly contacting the inner side of the receiving portion 10, so that the temperature of the receiving portion 10 can be prevented from falling due to the slag. Suddenly rising, or avoiding the slag striking the inner wall surface of the receiving portion 10, affecting the strength of the structure of the receiving portion 10, thereby causing damage to the structure of the receiving portion 10, thus extending the life of the bushing as a whole.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the scope of the present invention. Equivalent embodiments of the invention may be made without departing from the technical scope of the present invention.

10‧‧‧Receiving Department

12‧‧‧Fixed flange

14‧‧‧Fixed ring

20‧‧‧Cooling waterway

22‧‧‧ water inlet

24‧‧‧Water outlet

30‧‧‧ splash cover

Claims (9)

A water-cooled roller bushing mainly comprises a cylindrical body, at least one cooling water channel is arranged on an outer side surface of the body, each cooling water channel is arranged in a curved shape on the outer surface of the body, and has at least one water inlet And at least one water outlet, the other cooling water channel is composed of a plurality of L-shaped angle steels, one end of each L-shaped angle steel is directly fixed to the outer side surface of the body, and the other end is fixedly connected with the adjacent L-shaped angle steel. The system consists of a half-arc cylindrical receiving portion and a semi-circular cylindrical splash-proof cover, and the at least one cooling water channel is disposed on the outer surface of the receiving portion. The water-cooled roller bushing of claim 1, wherein the length of the splash cover is shorter than the length of the receiving portion. The water-cooled drum bushing of claim 1 or 2, wherein the splash cover is integrally connected to the receiving portion. The water-cooled roller bushing of claim 1 or 2, wherein the splash cover is fixedly coupled to the receiving portion. The water-cooled roller bushing according to claim 4, wherein a fixing flange is respectively protruded on both side edges of the receiving portion, and both side edges of the splash-proof cover abut against the fixing flange of the receiving portion, and The outer peripheral surface of the splash cover is provided with a plurality of fixing rings, and the two ends of each fixing ring are respectively fixed on the two side edges of the receiving portion. The water-cooled roller bushing according to claim 5, wherein a plurality of heat insulating plates are disposed on an inner side surface of the receiving portion, and a telescopic gap is formed between the two adjacent heat insulating plates. The water-cooled roller bushing according to claim 6, wherein a plurality of laterally disposed fixing pieces are protruded from an inner side surface of the receiving portion, and a hangable sleeve is disposed on one side of each of the heat insulating plates. A fixing groove on the fixing piece is further disposed on the inner side surface of the receiving portion, and a plurality of positioning convex portions longitudinally disposed and respectively abutting against the side wall surface of the heat insulating plate are protruded. The water-cooled roller bushing according to claim 1 or 2, wherein a plurality of heat insulating plates are disposed on an inner side surface of the receiving portion, and a telescopic gap is formed between the two adjacent heat insulating plates. The water-cooled roller bushing according to claim 8, wherein a plurality of laterally disposed fixing pieces are protruded from an inner side surface of the receiving portion, and a hangable sleeve is disposed on one side of each of the heat insulating plates. A fixing groove on the fixing piece is further disposed on the inner side surface of the receiving portion, and a plurality of positioning convex portions longitudinally disposed and respectively abutting against the side wall surface of the heat insulating plate are protruded.