Environment-friendly automatic opening device for blast furnace tuyere

Abstract

The utility model relates to a blast furnace tuyere environmental protection type automatic opening device relates to blast furnace ironmaking equipment technical field, through setting up gas guide pipe, plugging pad and waste gas recovery hole, the gas that leaks in the mud process is concentrated collection and processing, avoids direct emission to the atmosphere, reduces environmental pollution, including clamping pipe feeding mechanism and poking pipe, the clamping pipe feeding mechanism includes clamping part and pipe feeding part, the clamping part is used for clamping fixed poking pipe, the pipe feeding part drives poking pipe to impact the plugging of blast furnace tuyere after clamping part clamping fixed poking pipe, the outside of poking pipe is equipped with gas guide pipe at poking end, and there is gas guide gap between gas guide pipe and poking end, the gas guide pipe is provided with plugging pad on one side of being located at poking end, the other side of poking end is provided with containing cavity, containing cavity is provided with waste gas recovery hole, waste gas recovery hole is connected with waste gas treatment equipment through connecting pipe.

Description

Technical Field

[0001] This invention relates to the field of blast furnace ironmaking equipment technology, specifically to an environmentally friendly automatic opening device for blast furnace tuyeres. Background Technology

[0002] The tuyeres are key components and process parts in blast furnace ironmaking. They are part of the air supply pipeline and typically consist of a large, medium, and small tuyer sleeve. Their function is to inject hot blast at high speed into the blast furnace, providing the necessary oxygen for combustion and reduction reactions. In the following situations, special refractory materials are used to block the tuyeres to safely isolate the blast furnace from the air supply system and gas pipeline network: Firstly, planned shutdowns, such as replacing tuyeres or addressing cooling wall leaks, require a scheduled production stoppage. Secondly, emergency shutdowns are necessary when equipment malfunctions suddenly, such as hot blast stove valve assembly failure, mud gun damage, or blower shutdown. Thirdly, shutdowns occur when blast furnace conditions are unfavorable, such as suspended charge or continuous poor tapping. The duration of these shutdowns varies depending on the specific situation, typically ranging from 4 to 48 hours to over seven days. To resume normal production, obstructions must be removed, allowing hot blast to re-enter the furnace, thus restoring production.

[0003] Currently, the conventional technical solution for removing blockages is to insert a steel rod into the tuyere, break the blockage, and then pull the rod out. However, a patent application (application number 202411125863.1) discloses a mud-removing device for blast furnace tuyere sleeves. This device uses a cylinder to drive an impactor and a rod, which together remove the blockage, easily replacing manual removal and offering higher efficiency. Furthermore, an invention application (application number 201911191037.6) discloses an automatic tuyere-removing device and method for blast furnaces, which uses a weight and guide rail to drive a steel rod to remove the blockage, enabling automatic tuyere removal.

[0004] However, in practice, the tuyeres of blast furnaces will vary in angle and height due to differences in actual installation location and angle. Existing mud-clearing equipment has poor versatility due to limitations in specifications and structure. In addition, after clearing the mud, the equipment needs to be moved to connect the air pipe to restore air supply. During the movement, waste gas will be discharged into the air, which is not environmentally friendly and will also harm the health of employees. Summary of the Invention

[0005] I. Technical problems to be solved To address the shortcomings of existing technologies, this invention proposes an environmentally friendly automatic opening device for blast furnace tuyeres. By setting up a gas guide pipe, sealing gasket, and waste gas recovery hole, the device centrally collects and treats the gas leaked during the tuyere clearing process, preventing direct emission into the atmosphere and reducing environmental pollution. It also prevents high-temperature dust in the blast furnace from being ejected from the tuyere and causing a fire risk when the tuyere is cleared.

[0006] II. Specific Technical Solutions An environmentally friendly automatic opening device for blast furnace tuyeres includes a clamping and feeding pipe mechanism and a tuyere-pushing pipe. The clamping and feeding pipe mechanism includes a clamping part and a feeding part. The clamping part is used to clamp and fix the tuyere-pushing pipe. After the feeding part clamps and fixes the tuyere-pushing pipe, it drives the tuyere-pushing pipe to impact the sealing material of the blast furnace tuyere. A gas guide pipe is sleeved on the outside of the tuyere-pushing end of the tuyere-pushing pipe. There is a gas guide gap between the gas guide pipe and the tuyere-pushing end. A sealing pad is provided on one side of the gas guide pipe located at the tuyere-pushing end. A receiving cavity is provided on the other side of the tuyere-pushing end. A waste gas recovery hole is provided in the receiving cavity. The waste gas recovery hole is connected to a waste gas treatment device through a connecting pipe.

[0007] Implementation principle and working principle: Compared with existing shoveling equipment, this solution features a unique approach. During shoveling, the clamping and feeding mechanism grips the shoveling pipe and propels it forward, with the shoveling end impacting the sealing material. Simultaneously, the sealing pad at the front end of the outer air guide pipe forms a seal with the air outlet, preventing high-pressure gas from escaping through gaps. Waste gas leaking during shoveling enters the receiving cavity through the air guide gap and is then pumped to the waste gas treatment equipment for purification via the waste gas recovery hole and connecting pipe. By incorporating the air guide pipe, sealing pad, and waste gas recovery hole, the leaked gas during shoveling is collected and treated centrally, preventing direct emission into the atmosphere and reducing environmental pollution. This effectively prevents operators from inhaling toxic gas, protecting their health and safety. The shoveling and waste gas recovery functions are integrated into one unit, achieving environmental protection while completing the shoveling operation, eliminating the need for a separate waste gas collection process.

[0008] Preferably, a buffer pad is provided between the sealing pad and the receiving cavity, and an elastic telescopic tube is provided between the sealing pad and the buffer pad. The two sides of the elastic telescopic tube are connected to the sealing pad and the buffer pad respectively through flanges. The beneficial effect of this preferred embodiment is that it can effectively absorb the recoil force generated during mud impact, protect the air guide pipe and the receiving cavity from damage, and extend the service life of the equipment. The elastic telescopic tube has a certain degree of flexibility and can adaptively adjust its position when the sealing pad is under pressure, ensuring that the sealing pad and the air outlet always maintain a good seal and prevent exhaust gas leakage.

[0009] Preferably, the device also includes a chassis, with several wheels and hub motors arranged around the bottom of the chassis. The axles of the wheels are connected to the output end of the hub motors via wheel teeth. The advantages of this preferred embodiment are that the chassis enables the device to move autonomously without manual handling, reducing labor intensity; the hub motors can precisely control the movement distance and direction, making it easy to align the device with the blast furnace tuyeres; and with the controller, remote control movement can be achieved, allowing operators to stay away from high-temperature and gas hazard areas.

[0010] Preferably, a first base is provided on the upper surface of the chassis, and a synchronous lifting mechanism is provided on the chassis. The synchronous lifting mechanism includes at least four worm gear jacks arranged around the chassis. The synchronous lifting mechanism includes a first lifting motor, the output end of which is connected to a three-output gearbox. Two output ends of the three-output gearbox are connected to the corresponding worm gear jacks via couplings, and the other output end is connected to a two-output gearbox via a coupling. The two output ends of the two-output gearbox are respectively connected to the corresponding worm gear jacks via couplings. The lifting ends of the worm gear jacks are fixedly connected to the first base. The beneficial effect of this preferred embodiment is that by using a first lifting motor to drive the three-output gearbox, power is distributed to the worm gear jacks on both sides. At the same time, the power is further transmitted to the worm gear jacks on the other two sides via the two-output gearbox, realizing the synchronous lifting of at least four worm gear jacks, thereby driving the first base to lift smoothly. It has the advantages of good synchronization, strong load-bearing capacity, and adjustable height.

[0011] Preferably, a second base is provided on the upper part of the first base, and the bottom of the second base on one side of the tuyere is rotatably connected to the first base; the two ends of the bottom of the other side of the second base are fixedly connected to the first base through a lifting mechanism, and the lifting end of the lifting mechanism is rotatably connected to a connecting rod, the other end of the connecting rod being rotatably connected to the bottom of the second base; the beneficial effect of this preferred embodiment is that one side of the second base is rotatably connected to the first base, and the other side is supported by the lifting mechanism and the connecting rod; when the lifting mechanism moves up and down, the connecting rod pushes the second base to rotate around the hinge point, thereby changing the pitch angle of the second base; the pitch angle of the tuyere can be adjusted according to the actual tilt angle of the blast furnace tuyere, ensuring that the tuyere is accurately aligned with the center of the tuyere, and its geometric three-dimensional state is highly adaptable and more stable.

[0012] Preferably, the upper surface of the second base is rotatably connected to the third base. The bottom of the third base has limiting protrusions on both sides, and the upper surface of the second protrusion has an arc-shaped limiting groove that cooperates with the limiting protrusion. The beneficial effect of this preferred embodiment is that the third base is rotatably connected to the second base, the limiting protrusion at the bottom of the third base is embedded in the arc-shaped limiting groove on the upper surface of the second base, the limiting protrusion slides along the arc-shaped limiting groove, limiting the rotation range of the third base, and the cooperation between the protrusion and the arc-shaped limiting groove can also limit the third base, making it more stable when rotating.

[0013] Preferably, the clamping part of the clamping and feeding mechanism is located on the side of the third base near the air-venting end, and the feeding part is located on the other side of the third base; the clamping part includes a fourth base, which is slidably connected to the third base, and the upper surface of the fourth base is provided with a clamping motor and a gripper, the clamping motor being used to drive the gripper to clamp or release the air-venting pipe; the feeding part includes a rotating wheel, and a feeding rod is rotatably connected to the wheel surface of the rotating wheel, the other end of the feeding rod being rotatably connected to the fourth base; this preferred embodiment. The beneficial effects are that when the rotating wheel rotates, the pipe feeding rod drives the fourth base to slide back and forth on the third base, thereby driving the air-pumping pipe held by the clamping part to impact forward or retract backward; the automatic reciprocating impact of the air-pumping pipe is achieved through the rotating wheel and the connecting rod, eliminating the need for manual pushing, which is highly efficient, and forms a cam structure, where the pushing force is at its maximum during pushing, resulting in a stronger impact force; the clamping motor drives the grippers to clamp the air-pumping pipe, preventing the air-pumping pipe from slipping or falling off during the impact; the clamping part and the pipe feeding part are integrated on the same base, resulting in a compact overall structure and small space occupation.

[0014] Preferably, the third base is provided with a vertical limiting guide mechanism and a horizontal limiting guide mechanism on both sides of the air-pumping pipe along its axial direction. The vertical limiting guide mechanism includes vertical guide wheels located on the upper and lower sides of the air-pumping pipe, and the horizontal limiting guide mechanism includes horizontal guide wheels arranged horizontally on both sides of the air-pumping pipe. The beneficial effect of this preferred embodiment is that the vertical guide wheels and horizontal guide wheels on both sides of the air-pumping pipe along its axial direction limit and guide the air-pumping pipe from the upper and lower directions and the left and right directions, respectively, ensuring that the air-pumping pipe maintains a straight line during the impact process. This can effectively prevent the air-pumping pipe from deflecting during the impact process and ensure that the impact force is accurately applied to the center of the sealing object. The guide wheels and the air-pumping pipe have rolling friction, which results in less wear compared to sliding friction, extending the service life of the air-pumping pipe and the guiding mechanism.

[0015] Preferably, a protective shell is provided on the outer side of the clamping part of the pipe-feeding mechanism near the air-pumping end, and a second shell is provided on the side of the protective shell away from the clamping part, with the receiving cavity connected to the second shell. The beneficial effects of this preferred embodiment are that the protective shell and the second shell on the outer side of the clamping part near the air-pumping end, with the second shell connected to the receiving cavity, form a closed protective space. This can prevent high-temperature slag, iron, and coke particles from splashing and injuring people or affecting the normal use of the device during the mud-pumping process, protecting the safety of operators and the safe operation of the equipment. The connection between the second shell and the receiving cavity expands the volume of waste gas collection, which helps to collect leaked gas more fully. The protective shell has a certain sound insulation effect, which can reduce noise pollution during mud-pumping operations.

[0016] Preferably, the waste gas treatment equipment includes a negative pressure suction mechanism, which is configured to activate during ventilation, allowing waste gas to sequentially enter the waste gas treatment equipment along the air guide gap, the receiving cavity, and the connecting pipe. The beneficial effect of this preferred embodiment is that the mechanism is set to activate synchronously at the start of ventilation, creating negative pressure within the air guide gap, the receiving cavity, and the connecting pipe, actively drawing leaked waste gas into the waste gas treatment equipment. This transforms passive waiting for negative pressure suction into active extraction, significantly improving waste gas collection efficiency and virtually eliminating waste gas leakage. The negative pressure suction automatically activates during ventilation, requiring no additional manual operation, demonstrating a high degree of intelligence. The waste gas is promptly drawn to the treatment equipment for purification treatment such as combustion and adsorption, achieving zero emissions.

[0017] The beneficial effects of this invention are as follows: 1. By installing a venting pipe and a sealing gasket on the outside of the venting end of the venting pipe, along with the waste gas recovery hole and connecting pipe in the containment cavity and the waste gas treatment equipment, a closed waste gas recovery channel is formed. When venting mud, the leaked high-pressure coal gas enters the containment cavity through the venting gap and is actively drawn to the waste gas treatment equipment by the negative pressure suction mechanism for purification, preventing coal gas leakage and avoiding environmental pollution and the risk of poisoning of operators. At the same time, the protective shell can prevent high-temperature slag and iron from splashing and affecting the operation of the equipment, greatly improving the safety of operation.

[0018] 2. The device integrates walking wheels and hub motors to achieve remote-controlled movement. Through the synchronous lifting mechanism, the lifting mechanism and the horizontal rotation adjustment of the third base, it can flexibly adapt to the height, pitch angle and horizontal position deviation of different blast furnace tuyeres, and has strong versatility. The clamping and feeding pipe mechanism uses rotating wheels and feeding pipe connecting rods to drive the tuyere pipe to automatically reciprocate and impact. With the help of vertical limit guide mechanism and horizontal limit guide mechanism, it achieves precise guidance. No manual close-range operation is required, resulting in low labor intensity and high operation efficiency.

[0019] 3. A buffer pad and an elastic telescopic tube are installed between the sealing pad and the receiving cavity to effectively absorb the recoil force generated by the mud-pumping impact and protect the air guide pipe and the receiving cavity from damage; the elastic telescopic tube can adaptively expand and contract to compensate for the sealing gap, ensuring that the sealing pad and the air outlet always maintain good contact; each guiding mechanism adopts a rolling friction design to reduce the wear of the air-pumping pipe, significantly extend the overall service life of the equipment, and reduce maintenance costs. Attached Figure Description

[0020] Figure 1 This is a side view of the clamping and feeding mechanism of the blast furnace tuyeres environmentally friendly automatic opening device according to this embodiment.

[0021] Figure 2 This is a side view of the environmentally friendly automatic opening device for the blast furnace tuyeres in this embodiment.

[0022] Figure 3 This is a schematic diagram of the synchronous lifting mechanism in this embodiment.

[0023] Figure 4 This is a schematic diagram of the structure of the second base in this embodiment.

[0024] Figure 5 This is a schematic diagram of the second base structure in this embodiment.

[0025] Figure 6 This is a schematic diagram of the feeding pipe section in this embodiment.

[0026] Figure 7 For the appendix Figure 1 Top view.

[0027] Figure 8 This is a schematic diagram of the clamping part in this embodiment.

[0028] Explanation of reference numerals in the attached figures: 1. Clamping and feeding mechanism; 2. Air inlet pipe; 201. Air inlet end; 202. Air guide pipe; 203. Air guide gap; 204. Sealing gasket; 205. Receiving cavity; 206. Waste gas recovery hole; 207. Buffer pad; 208. Elastic telescopic pipe; 3. Chassis; 301. Walking wheel; 302. Wheel hub motor; 4. First base; 4. Synchronous lifting mechanism; 41. Turbine screw jack; 411. Three-output gearbox; 412. Two-output gearbox; 413. Second base; 42. Lifting mechanism; 421. Connecting rod; 422. Arc-shaped limiting groove; 423. Third base; 43. Limiting protrusion; 431. Vertical limiting guide mechanism; 44. Vertical guide wheel; 441. Horizontal limiting guide mechanism; 45. Horizontal guide wheel; 451. Fourth base; 101. Clamping motor; 102. Gripper; 103. Rotating wheel; 104. Feeding connecting rod; 105. Protective shell; 5. Second shell; 501. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] When implementing, such as Figure 1 - Figure 8 As shown, an environmentally friendly automatic opening device for blast furnace tuyeres includes a clamping and feeding pipe mechanism 1 and a tuyere-opening pipe 2; Figure 1 The clamping and feeding mechanism 1 consists of a feeding part and a clamping part from left to right. The clamping part is used to clamp and fix the air-pumping pipe 2. After the feeding part clamps and fixes the air-pumping pipe 2, it drives the air-pumping pipe 2 to impact the sealing material at the blast furnace tuyeres.

[0031] Specifically, a guide pipe 202 is fitted on the right side of the air-purifying pipe 2, that is, on the outside of the air-purifying end 201. The inner diameter of the guide pipe 202 is larger than the outer diameter of the air-purifying end 201. Based on this, there is an air-purifying gap 203 between the guide pipe 202 and the air-purifying end 201. A sealing pad 204 is provided on the left side of the air-purifying end 201 of the guide pipe 202. The side of the sealing pad 204 near the air outlet is configured as a high-temperature resistant soft pad, such as a carbon nitride rubber soft pad or a silicone soft pad. When purging, the sealing pad 204 can completely seal the air duct. An integrally formed receiving cavity 205 is formed on the left side of the air-purifying end 201. This receiving cavity is a conical cavity. When the exhaust gas enters, it is easier to collect and process due to the change in diameter. The cavity 205 is equipped with a waste gas recovery hole 206. The waste gas recovery hole 206 is connected to a connecting pipe, which is specifically a high-temperature resistant rubber tube. The other end of the connecting pipe is connected to a waste gas treatment device. The waste gas treatment device has a built-in negative pressure suction device, which creates a negative pressure inside the connecting pipe, and then collects waste gas through the pressure difference. Specifically, during the ventilation operation, the clamping and feeding mechanism 1 clamps the ventilation pipe 2 and pushes it forward, and the ventilation end 201 impacts the blockage. At the same time, the sealing pad 204 forms a seal with the area around the vent. The leaked waste gas enters the cavity 205 through the air guide gap 203, and then enters the waste gas treatment device for purification treatment through the waste gas recovery hole 206 and the connecting pipe.

[0032] In specific implementation, such as Figure 1As shown, a buffer pad 207 is provided on the air duct 202, specifically located between the sealing pad 204 and the receiving cavity 205. An elastic telescopic tube 208 is provided between the sealing pad 204 and the buffer pad 207. The two ends of the elastic telescopic tube 208 are connected to the sealing pad 204 and the buffer pad 207 respectively through flanges. When subjected to the impact of mud, the recoil force of the sealing pad 204 is transmitted to the buffer pad 207 through the elastic telescopic tube 208 and absorbed by the buffer pad 207. At the same time, the elastic telescopic tube 208 adapts to expansion and contraction, maintaining the sealing contact between the sealing pad 204 and the air outlet, further preventing exhaust gas leakage.

[0033] In specific implementation, such as Figure 2 and Figure 3 As shown, the device also includes a chassis 3; four traveling wheels 301 and a hub motor 302 are arranged around the bottom of the chassis 3, and the shafts of the traveling wheels 301 are connected to the output end of the hub motor 302 through wheel teeth; the hub motor 302 drives the traveling wheels 301 to rotate, thereby realizing the movement and positioning of the device; specifically, a first base 4 is provided on the upper surface of the chassis 3; specifically, a synchronous lifting mechanism 41 is provided on the chassis 3; in this embodiment, the synchronous lifting mechanism 41 is specifically four worm gear screw jacks 411 arranged around the chassis, and the mechanism also includes a first lifting motor, a three-output gearbox 412 and a two-output gearbox 413; the output end of the first lifting motor is connected to the input end of the three-output gearbox 412 through a coupling, two output ends of the three-output gearbox 412 are connected to the input ends of the corresponding worm gear screw jacks 411 through couplings, and the other output end is connected to the input end of the two-output gearbox 413 through a coupling, and the two output ends of the two-output gearbox 413 are respectively connected to the corresponding worm gear screw jacks 411 through couplings. The lifting end of the worm gear screw jack 411 is fixedly connected to the bottom of the first base 4. The first lifting motor can complete the synchronous lifting of the first base 4, making it more adaptable. In specific implementation, the first lifting motor is started, and the power is distributed to the four worm gear screw jacks 411 through the three-output gearbox 412 and the dual-output gearbox 413 to achieve synchronous lifting and drive the first base 4 to lift smoothly.

[0034] Furthermore, such as Figure 2 As shown, a second base 42 is provided on the upper part of the first base 4; the bottom of the second base 42 on one side of the air-venting end 202 is hinged to the first base 4, and the two ends of the bottom on the other side are fixedly connected to the first base 4 through a lifting mechanism 421; the lifting mechanism 421 can be a lifting device such as an electro-hydraulic telescopic rod, and the lifting end of the lifting mechanism 421 is rotatably connected to a connecting rod 422, and the other end of the connecting rod 422 is rotatably connected to the bottom of the second base 42; by the lifting of the lifting mechanism 421, the connecting rod 422 is driven to push the second base 42 to rotate around the hinge point, and the pitch angle is adjusted, which can further meet the needs of different air-venting channels.

[0035] Specifically, such as Figure 2 As shown, the upper surface of the second base 42 is rotatably connected to the third base 43 via bearings; the bottom of the third base 43 is provided with limiting protrusions 431 on both sides, and the specific limiting protrusions 431 can also be guide wheels symmetrical about the center of the base; the upper surface of the second base 42 is provided with an arc-shaped limiting groove 423 that cooperates with the limiting protrusions 431; the limiting protrusions 431 slide along the arc-shaped limiting groove 423, limiting the rotation range of the third base 43, and at the same time, while playing a guiding role, they can also play a supporting role, making it easy to achieve horizontal rotation adjustment.

[0036] When implementing, such as Figure 1-8 As shown, the clamping part of the pipe-feeding mechanism 1 is located on one side of the third base 43 near the air-venting end 201, and the pipe-feeding part is located on the other side of the third base 43. The clamping part includes a fourth base 101, which is slidably connected to the third base 43. The upper surface of the fourth base 101 is provided with a clamping motor 102 and a gripper 103. The clamping motor 102 is used to drive the gripper 103 to clamp or release the air-venting pipe 2. The pipe-feeding part includes a rotating wheel 104, on which a pipe-feeding connecting rod 105 is rotatably connected. The other end of the pipe-feeding connecting rod 105 is rotatably connected to the fourth base 101. When the rotating wheel 104 rotates, it drives the fourth base 101 to slide back and forth through the pipe-feeding connecting rod 105, thereby realizing the impact action of the air-venting pipe 2. The third base 43 is located on the axial direction of the air-venting pipe 2. A vertical limiting guide mechanism 44 and a horizontal limiting guide mechanism 45 are respectively provided on both sides of the air-pumping pipe 2. The vertical limiting guide mechanism 44 includes vertical guide wheels 441 located on the upper and lower sides of the air-pumping pipe 2, and the horizontal limiting guide mechanism 45 includes horizontal guide wheels 451 located on both sides of the air-pumping pipe 2. The guide wheels provide rolling guidance for the air-pumping pipe 2 to prevent deflection. A protective shell 5 is provided on the outer side of the clamping part of the clamping and feeding mechanism 1 near the air-pumping end 202. A second shell 501 is also provided on the side of the protective shell 5 away from the clamping part. The receiving cavity 205 is connected to the second shell 501 to form a closed protection. It is worth noting that it is not completely closed. A through hole is provided for the air-pumping pipe 2 to pass through, which facilitates the reciprocating movement of the air-pumping pipe and avoids high-temperature exhaust gas or waste residue impacting the mechanical parts and causing damage.

[0037] Furthermore, the waste gas treatment equipment includes a negative pressure suction mechanism; this negative pressure suction mechanism is configured to open during ventilation, allowing waste gas to sequentially enter the waste gas treatment equipment along the air guide gap 203, the receiving cavity 205, and the connecting pipe. Specifically, a linkage program can be set in the control system so that when the clamping and feeding pipe mechanism 1 is started, the negative pressure suction mechanism automatically starts to ensure that the waste gas is extracted in a timely manner.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.

Claims

1. An environmentally friendly automatic opening device for blast furnace tuyeres, characterized in that: The system includes a clamping and feeding pipe mechanism (1) and a blast furnace tuyer (2). The clamping and feeding pipe mechanism (1) includes a clamping part and a feeding part. The clamping part is used to clamp and fix the blast furnace tuyer (2). After the feeding part clamps and fixes the blast furnace tuyer (2), it drives the blast furnace tuyer (2) to impact the sealing material at the blast furnace tuyer. The blast furnace tuyer (2) has a gas guide pipe (202) sleeved on the outside of the blast furnace tuyer end (201). There is a gas guide gap (203) between the gas guide pipe (202) and the blast furnace tuyer end (201). A sealing pad (204) is also provided on the gas guide pipe (202). The sealing pad (204) and the receiving cavity (205) are connected. A buffer pad (207) is provided between the sealing pad (204) and the buffer pad (207). An elastic telescopic tube (208) is provided between the sealing pad (204) and the buffer pad (207). The two sides of the elastic telescopic tube (208) are connected to the sealing pad (204) and the buffer pad (207) respectively through flanges. The air guide pipe (202) is provided on one side of the air-purifying end (201). A sealing pad (204) is provided on the other side of the air-purifying end (201). A receiving cavity (205) is provided in the receiving cavity (205). A waste gas recovery hole (206) is provided in the receiving cavity (205). The waste gas recovery hole (206) is connected to a waste gas treatment device through a connecting pipe.

2. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 1, characterized in that: A buffer pad (207) is provided between the sealing pad (204) and the receiving cavity (205), and an elastic telescopic tube (208) is provided between the sealing pad (204) and the buffer pad (207). The two sides of the elastic telescopic tube (208) are connected to the sealing pad (204) and the buffer pad (207) respectively through flanges.

3. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 1, characterized in that: It also includes a chassis (3), which has several wheels (301) and a hub motor (302) arranged around the bottom of the chassis (3). The shaft of the wheels (301) is connected to the output end of the hub motor (302) through the wheel teeth.

4. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 3, characterized in that: The upper surface of the chassis (3) is provided with a first base (4), and the chassis (3) is provided with a synchronous lifting mechanism (41); the synchronous lifting mechanism (41) includes at least four turbine screw jacks (411) arranged around the chassis. The synchronous lifting mechanism (41) includes a first lifting motor. The output end of the first lifting motor is connected to a three-output gearbox (412). Two output ends of the three-output gearbox (412) are connected to the corresponding turbine screw jacks (411) through couplings. The other output end is connected to a double-output gearbox (413) through couplings. The two output ends of the double-output gearbox (413) are respectively connected to the corresponding turbine screw jacks (411) through couplings. The lifting end of the turbine screw jack (411) is fixedly connected to the first base (4).

5. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 4, characterized in that: A second base (42) is provided on the upper part of the first base (4). The bottom of the second base (42) on the side of the air blower end (202) is rotatably connected to the first base (4). The two ends of the bottom of the other side of the second base (42) are fixedly connected to the first base (4) through a lifting mechanism (421). The lifting end of the lifting mechanism (421) is rotatably connected to a connecting rod (422). The other end of the connecting rod (422) is rotatably connected to the bottom of the second base (42).

6. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 5, characterized in that: The upper surface of the second base (42) is rotatably connected to the third base (43). The bottom sides of the third base (43) are provided with limiting protrusions (431). The upper surface of the second protrusion (42) is provided with an arc-shaped limiting groove (423) that cooperates with the limiting protrusion (431).

7. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 6, characterized in that: The clamping part of the clamping and feeding mechanism (1) is located on the side of the third base (43) near the air-venting end (201), and the feeding part is located on the other side of the third base (43); the clamping part includes a fourth base (101), which is slidably connected to the third base (43). The upper surface of the fourth base (101) is provided with a clamping motor (102) and a gripper (103). The clamping motor (102) is used to drive the gripper (103) to clamp or release the air-venting pipe (2); the feeding part includes a rotating wheel (104), and a feeding rod (105) is rotatably connected to the wheel surface of the rotating wheel (104). The other end of the feeding rod (105) is rotatably connected to the fourth base (101).

8. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 6, characterized in that: The third base (43) is provided with a vertical limiting guide mechanism (44) and a horizontal limiting guide mechanism (45) on both sides of the air-pumping pipe (2) along the axial direction. The vertical limiting guide mechanism (44) includes vertical guide wheels (441) located on the upper and lower sides of the air-pumping pipe (2), and the horizontal limiting guide mechanism (45) includes horizontal guide wheels (451) located on both sides of the air-pumping pipe (2).

9. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 1, characterized in that: A protective shell (5) is provided on the outside of the clamping part of the clamping tube feeding mechanism (1) near the air-venting end (202). A second shell (501) is also provided on the side of the protective shell (5) away from the clamping part. The receiving cavity (205) is connected to the second shell (501).

10. The environmentally friendly automatic opening device for blast furnace tuyeres according to claim 1, characterized in that: The waste gas treatment equipment includes a negative pressure suction mechanism, which is configured to open when the air is blown, so that the waste gas enters the waste gas treatment equipment sequentially along the air guide gap (203), the receiving cavity (205) and the connecting pipe.

Images