Material pushing and taking mechanism in blast furnace

Abstract

The utility model relates to a material raking and taking mechanism in a blast furnace, and belongs to the technical field of metallurgy. According to the technical scheme, a spiral material taking machine (5) is inserted into a tuyere large sleeve (3) of the blast furnace, the front end of the spiral material taking machine (5) is arranged in the furnace (20), and the rear end of the spiral material taking machine (5) is arranged outside the furnace (21); a feeding port (2) is formed in the front end of the spiral material taking machine (5), an opening of the feeding port (2) faces the upper portion, a small hook machine (1) is placed on the surface of materials in the furnace (20), and a hook bucket of the small hook machine (1) excavates the materials and puts the materials into the feeding port (2); a discharging port (4) is formed in the rear end of the spiral material taking machine (5), an opening of the discharging port (4) faces the lower portion, and a detachable belt conveyor (6) is arranged below the discharging port (4). The device has the beneficial effects that the structure is simple, the occupied space is small, the labor intensity of workers is reduced, the cost is reduced, the production efficiency is improved, and the potential safety hazard is reduced.

Description

Technical Field

[0001] The utility model relates to a material scraping and taking mechanism in a blast furnace, belonging to the technical field of metallurgy. Background Art

[0002] After a blast furnace is shut down, the blast furnace's blast materials (coke lumps and sintered ore) need to be removed. Traditionally, workers used shovels to shovel the blast materials through the large opening outside the blast furnace. Workers outside then shoveled the materials onto carts, pushed them to chutes, and dumped them onto freight vehicles. This labor-intensive process, combined with the relatively confined space inside the furnace and the long hours involved, posed a safety hazard. Utility Model Content

[0003] The utility model aims to provide a blast furnace material removal mechanism with a simple structure, small space occupation, reduced labor intensity, reduced costs, improved production efficiency, reduced unsafe hidden dangers, and solved the problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A blast furnace material scraping and reclaiming mechanism comprises a small hook machine, a spiral reclaimer and a detachable belt conveyor. The spiral reclaimer is inserted into the large sleeve of the blast furnace tuyere, the front end of the spiral reclaimer is arranged in the furnace, and the rear end is arranged outside the furnace; a feeding port is arranged at the front end of the spiral reclaimer, and the feeding port opening faces directly upward. A small hook machine is placed on the surface of the material in the furnace, and the hook bucket of the small hook machine digs the material and puts it into the feeding port; a discharging port is arranged at the rear end of the spiral reclaimer, and the discharging port opening faces directly downward, and a detachable belt conveyor is arranged below the discharging port; the detachable belt conveyor comprises an electric drum, a conveyor belt, a belt frame, a belt roller and a belt support roller. Electric drums and belt rollers are respectively arranged at both ends of the belt frame. The middle part of the belt frame is composed of multiple belt frames connected by bolt groups. Multiple belt support rollers are arranged on each belt frame. The electric drum and the belt roller are connected by a conveyor belt, and the conveyor belt is supported by the belt support rollers. A truck compartment is arranged below the electric drum, and the material is transported to the truck compartment through the conveyor belt.

[0006] The spiral reclaimer includes a casing, in which spiral blades and a transmission shaft are arranged. The spiral blades are arranged on the transmission shaft, and the transmission shaft is connected to a motor. The motor drives the transmission shaft to drive the spiral blades to rotate and transport the material entering the feed port to the discharge port.

[0007] The spiral blades are provided with wear-resistant linings, which prolongs the service life of the spiral blades.

[0008] There are multiple wear-resistant linings in a fan-shaped structure, which match the spiral blades and are fixed to the spiral blades by bolts. When the wear-resistant linings are worn, they are easy to replace.

[0009] The casing of the spiral reclaimer is made of seamless steel pipe, with a length of about 4.75 meters and a diameter of 500 mm.

[0010] The detachable belt conveyor is placed on the tuyere platform outside the furnace. The length and number of the conveyor belts can be determined according to the distance and position between the tuyere sleeve and the edge of the tuyere platform. The number of belt racks can be selected according to the length requirements of the conveyor belts.

[0011] The detachable belt conveyor is provided with a safety interlocking drawstring.

[0012] The spiral reclaimer can be installed tilted or vertically in the furnace and can be moved according to the site during operation.

[0013] When the furnace is being dug, the spiral reclaimer is inserted from the outside of the tuyere sleeve to a position 2 meters away from the tuyere in the blast furnace. The inlet of the spiral reclaimer faces upwards and the outlet faces downwards. The detachable belt conveyor is placed below the outlet of the spiral reclaimer. The small hook machine uses a hook bucket to dig the material in the furnace and put it into the inlet. The material falls directly from the outlet of the spiral reclaimer onto the conveyor belt of the detachable belt conveyor. The conveyor belt is driven by the rotation of the electric drum to transport the material into the truck compartment.

[0014] The small hook machine, electric roller, truck compartment, conveyor belt, belt roller, belt support roller, transmission shaft, spiral blade and motor are all well-known and commonly used equipment in the field.

[0015] The beneficial effects of the utility model are: simple structure, small space occupation, reduced labor intensity, reduced costs, improved production efficiency, and reduced safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the detachable belt conveyor of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the spiral reclaimer of the utility model;

[0019] Figure 4 for Figure 3 AA direction schematic diagram;

[0020] Figure 5 for Figure 3 BB direction schematic diagram;

[0021] Figure 6 for Figure 3 CC direction schematic diagram;

[0022] In the figure: small hook machine 1, feeding port 2, large air vent sleeve 3, discharging port 4, spiral reclaimer 5, detachable belt conveyor 6, electric drum 7, truck compartment 8, conveyor belt 9, rear section of belt frame 10, bolt group 11, front section of belt frame 12, air vent platform edge 13, belt roller 14, belt support roller 15, spiral blade 16, machine casing 17, wear-resistant lining 18, drive shaft 19, furnace interior 20, furnace exterior 21. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and through examples.

[0024] A blast furnace scraping and reclaiming mechanism comprises a small hook machine 1, a spiral reclaimer 5 and a detachable belt conveyor 6. The spiral reclaimer 5 is inserted into a large tuyere sleeve 3 of the blast furnace. The front end of the spiral reclaimer 5 is arranged in the furnace 20, and the rear end is arranged outside the furnace 21. The front end of the spiral reclaimer 5 is provided with a feed port 2, and the feed port 2 opens upward. The small hook machine 1 is placed on the surface of the material in the furnace 20, and the hook bucket of the small hook machine 1 digs the material and puts it into the feed port 2; the rear end of the spiral reclaimer 5 is provided with a discharge port 4, and the discharge port 4 opens downward. The detachable belt conveyor 6 comprises an electric roller 7, a conveyor belt 9, a belt frame, a belt roller 14 and a belt support roller 15. The electric roller 7 and the belt roller 14 are respectively arranged at both ends of the belt frame. The middle part of the belt frame is composed of multiple sections of belt frames connected by a bolt group 11. Multiple belt support rollers 15 are arranged on each section of the belt frame. The electric roller 7 and the belt roller 14 are connected by the conveyor belt 9, and the conveyor belt 9 is supported by the belt support roller 15. A truck compartment 8 is arranged under the electric roller 7, and the material is transported to the truck compartment 8 through the conveyor belt 9.

[0025] The spiral reclaimer 5 includes a casing 17, in which a spiral blade 16 and a transmission shaft 19 are provided. The spiral blade 16 is provided on the transmission shaft 19, and the transmission shaft 19 is connected to the motor. The motor drives the transmission shaft 19 to drive the spiral blade to rotate and transport the material entering the feed port 2 to the discharge port 4.

[0026] The spiral blade 16 is provided with a wear-resistant lining 18 to extend the service life of the spiral blade 16 .

[0027] The wear-resistant lining plates 18 are multiple in number and are fan-shaped in structure, matching the spiral blades 16 and being fixed to the spiral blades 16 by bolts. When the wear-resistant lining plates 18 are worn, they can be easily replaced.

[0028] The casing 17 of the spiral reclaimer 5 is made of seamless steel pipe, with a length of about 4.75 meters and a diameter of 500 mm.

[0029] The detachable belt conveyor 6 is placed on the tuyere platform outside the furnace. The length and number of the conveyor belts can be determined according to the distance and position between the tuyere sleeve 3 and the edge 13 of the tuyere platform. The number of belt racks can be selected according to the length requirement of the conveyor belt. The detachable belt conveyor 6 can be disassembled when not in use, taking up little space.

[0030] When in use, the spiral reclaimer 5 is inserted into the furnace from the tuyere sleeve 3, and the small hook machine 1 is hoisted into the furnace. The small hook machine 1 is placed on the surface of the material in the furnace, and the material in the furnace is dug with a hook bucket and placed in the feed port 2. The spiral reclaimer 5 rotates the spiral blades connected inside through the motor to transport the material entering from the feed port 2 to the position of the discharge port 3. The discharge port 3 is located outside the blast furnace body. The material is transported to the truck compartment 8 through the detachable belt conveyor 6 below and the head electric roller 7. The spiral reclaimer 5 can be installed tilted or vertically in the furnace and can be moved according to the site during operation.

[0031] In this embodiment, the belt frame comprises two sections: a front section 12 and a rear section 10. The spiral reclaimer 5 is constructed of φ500 seamless steel pipe, is approximately 4.75 meters long, and is driven by a motor. The accompanying detachable belt conveyor 6 comprises a motorized drum 7, a conveyor belt 9, a front section 12, a rear section 10, belt rollers 14, and a belt support roller 15. The front and rear sections 12 and 10 are secured with bolts 11 in the middle. Once the conveyor belt 9 is threaded through, the conveyor is ready for operation.

[0032] The utility model can determine the length and number of belts according to the distance and position of the tuyere large sleeve 3 from the tuyere platform edge 13. Because the conveying volume is small, a B500 belt conveyor can be used. The detachable belt conveyor 6 is equipped with a safety chain pull rope and other protective measures.

[0033] The transport capacity of this utility model is more than 30 tons per hour.

[0034] The utility model can be reused after being put into use once, has a simple structure, and effectively solves the problems of reducing costs and increasing efficiency, hidden dangers, and labor intensity.

Claims

1. A blast furnace material removal mechanism, characterized by: The invention comprises a small hook machine (1), a spiral reclaimer (5) and a detachable belt conveyor (6), wherein the spiral reclaimer (5) is inserted into a large air inlet sleeve (3) of a blast furnace, the front end of the spiral reclaimer (5) is arranged in the furnace (20), and the rear end is arranged outside the furnace (21); a feed port (2) is arranged at the front end of the spiral reclaimer (5), the feed port (2) opening is facing upward, the small hook machine (1) is placed on the surface of the material in the furnace (20), and the hook bucket of the small hook machine (1) digs the material and puts it into the feed port (2); a discharge port (4) is arranged at the rear end of the spiral reclaimer (5), the discharge port (4) opening is facing downward, and a detachable belt conveyor is arranged below the discharge port (4). (6); The detachable belt conveyor (6) comprises an electric roller (7), a conveyor belt (9), a belt frame, a belt roller (14) and a belt support roller (15), wherein the electric roller (7) and the belt roller (14) are respectively arranged at both ends of the belt frame, and the middle portion of the belt frame is composed of multiple sections of belt frames connected by a bolt group (11), and multiple belt support rollers (15) are arranged on each section of the belt frame, the electric roller (7) and the belt roller (14) are connected by a conveyor belt (9), and the conveyor belt (9) is supported by the belt support roller (15), and a truck compartment (8) is arranged below the electric roller (7), and materials are transported to the truck compartment (8) through the conveyor belt (9).

2. The blast furnace material removal mechanism according to claim 1, characterized in that: The spiral reclaimer (5) comprises a casing (17), wherein a spiral blade (16) and a transmission shaft (19) are provided in the casing (17), the spiral blade (16) is provided on the transmission shaft (19), and the transmission shaft (19) is connected to a motor.

3. The blast furnace material removal mechanism according to claim 2, characterized in that: A wear-resistant lining plate (18) is provided on the spiral blade (16).

4. The blast furnace material removal mechanism according to claim 3, characterized in that: The wear-resistant lining plates (18) are multiple in number and have a fan-shaped structure, matching the spiral blades (16) and being fixed to the spiral blades (16) by bolts.

5. The blast furnace material removal mechanism according to claim 2, characterized in that: The casing (17) of the spiral reclaimer (5) is made of seamless steel pipe.

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