Foreign matter cleaning tool

Abstract

The utility model relates to the technical field of ironmaking equipment, and discloses a foreign matter cleaning tool which comprises a supporting rod, a drill bit, a gear-shaped structural part, an air supply device and a rotary driving device, the first end of the supporting rod extends into a belly pipe or a tuyere small sleeve, and an air flow channel is formed in the supporting rod; the airflow channel is provided with an air inlet at the end part of the second end of the supporting rod, and a purging air outlet is formed in the side wall of the first end; the drill is arranged at the first end of the support rod; the supporting rod is sleeved with the gear-shaped structural part, the gear-shaped structural part is located on the side, facing the second end of the supporting rod, of the drill bit, the gear-shaped structural part is close to the drill bit and spaced from the drill bit, and a plurality of cutting blades distributed in the circumferential direction around the axis of the gear-shaped structural part are arranged on the peripheral side of the gear-shaped structural part; an air supply pipe of the air supply device is communicated with the air inlet; the rotation driving device is connected with the second end of the supporting rod. The foreign matter cleaning tool is suitable for cleaning different types of foreign matters in a belly pipe and a tuyere small sleeve, is high in compatibility, can be operated by a single person, and is quick, efficient, time-saving and labor-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of ironmaking equipment, in particular to a foreign matter cleaning tool. Background Art

[0002] The blast furnace direct blowing pipe is a pipe fitting used in the blast furnace ironmaking and smelting production process. Its functional chamber delivers hot air stably and evenly into the blast furnace. At the same time, the direct blowing pipe can be used to inject pulverized coal into the furnace, reducing the coke ratio and smelting costs. In the blast furnace ironmaking production process, it is often necessary to seal the tuyere sleeve or install porcelain sleeves and other types of bushings in the tuyere sleeve. However, these seals or installed components need to be removed after a period of time. In addition, during the blast furnace production process, slag, iron, or even coke powder may be filled into the tuyere sleeve or direct blowing pipe due to various reasons. These components that need to be removed or the slag, iron, and coke powder become foreign matter in the tuyere sleeve or direct blowing pipe that hinders blast furnace production.

[0003] There are many traditional methods and tools for cleaning these foreign objects, but they are specially designed for different types of foreign objects and cannot be used universally. Therefore, multiple tools are needed to clean the direct blowpipe and the tuyere tube, and some tools or methods even require the disassembly of the direct blowpipe, which is time-consuming and laborious.

[0004] Therefore, how to clean the blowpipe or the air duct sleeve more simply and labor-savingly is a problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a foreign body cleaning tool, which can be inserted into the straight blowing pipe and the air outlet small sleeve to crush various foreign bodies in the straight blowing pipe and the air outlet small sleeve, and can cut and crush foreign bodies on the inner wall thoroughly. It is suitable for cleaning different types of foreign bodies in the straight blowing pipe and the air outlet small sleeve, has strong compatibility, can be operated by one person, and is fast, efficient, time-saving and labor-saving.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0007] A foreign body cleaning tool for cleaning blast furnace direct blowing pipes and tuyere sleeves, specifically comprising:

[0008] A support rod, the support rod having a first end and a second end opposite to each other, the first end of the support rod being used to extend into a straight blowpipe or a tuyere sleeve, the support rod having a hollow structure therein, the hollow structure extending along the extension direction of the axis of the support rod to form an air flow channel, the air flow channel having an air inlet formed at the end of the second end of the support rod, and a purge air outlet formed on a side wall of the first end of the support rod;

[0009] a drill bit, the drill bit being mounted on the first end of the support rod;

[0010] a gear-shaped structural member, the gear-shaped structural member being sleeved on the support rod and located on a side of the drill bit facing the second end of the support rod, the gear-shaped structural member being close to the drill bit and spaced apart from the drill bit, the outer periphery of the gear-shaped structural member being provided with a plurality of cutting blades spaced circumferentially around the axis thereof, the cutting edges of the cutting blades being oriented toward a side away from the axis of the gear-shaped structural member;

[0011] an air supply device, wherein an air supply pipe of the air supply device is connected to the air inlet and is used to provide purge air into the air flow channel;

[0012] A rotation driving device is connected to the second end of the support rod and is used to drive the support rod to rotate around its own axis.

[0013] When the blowpipe or the tuyere sleeve needs to be cleaned, the first end of the support rod can be inserted from one end of the blowpipe, the rotary drive device can be started and the air supply device can be turned on. The support rod can be slowly inserted into the blowpipe while rotating, and then reciprocated along the inner cavity of the blowpipe and the tuyere sleeve. Since the support rod has a certain length, when the second end of the support rod is driven to rotate, the rotation of the first end of the support rod will generate irregular centrifugal force. In addition to the drill bit being able to destroy and drill out foreign objects in the blowpipe and the tuyere sleeve, the gear-shaped structure returns to the vertical position. The gear-shaped structural member swings axially along the inner wall of the channel to be cleaned, and the cutting blade of the gear-shaped structural member generates a large rotary cutting destructive force, which impacts, cuts and crushes various foreign objects attached to the inner wall of the direct blowing pipe and the tuyere sleeve. At the same time, while the foreign objects are being destroyed and crushed, the purge air outlet at the first end of the support rod will blow out high-pressure purge gas, blowing up the crushed foreign objects, so that the drill bit and the gear-shaped structural member can easily clean the undamaged foreign objects thoroughly. After the foreign objects in the channel to be cleaned are completely crushed and cleaned, the support rod is removed after the operation is completed. After the blast furnace resumes production, the cut, crushed and loose foreign objects can be blown into the hearth of the blast furnace with the high-temperature hot air and melted, so that the air supply channel of the direct blowing pipe and the tuyere sleeve is clean and free of foreign objects, avoiding interference with blast furnace production.

[0014] Therefore, the above-mentioned foreign matter cleaning tool can be inserted into the straight blowing pipe and the air outlet small sleeve to crush various foreign matters in the straight blowing pipe and the air outlet small sleeve, and the foreign matters on the inner wall can be cut and crushed thoroughly. It is suitable for cleaning different types of foreign matters in the straight blowing pipe and the air outlet small sleeve, has strong compatibility, and can be operated by one person, which is fast, efficient, time-saving and labor-saving.

[0015] Optionally, the drill bit has a cavity inside, and an opening penetrating the cavity is provided on the side wall of the drill bit. The cavity is connected to the air flow channel, and the opening constitutes the purge outlet.

[0016] Optionally, the rotary drive device includes a pneumatic wrench, the output end of the pneumatic wrench is connected to the second end of the support rod; the exhaust outlet of the pneumatic wrench is connected to the air inlet of the air flow channel, and the air supply device is reused as the air supply source of the pneumatic wrench.

[0017] Optionally, the rotation drive device includes a hydraulic motor, and the output end of the hydraulic motor is connected to the second end of the support rod;

[0018] The end of the second end of the support rod is provided with a sleeve, and the sleeve is sleeved on the outer peripheral side of the support rod. The sleeve is rotatably connected to the support rod, and the two ends of the sleeve are sealed to the support rod. An annular cavity is formed between the inner wall of the sleeve and the outer wall of the support rod, and the annular cavity is connected to the air inlet on the support rod. An air vent connected to the annular cavity is provided on the side wall of the sleeve, and the air supply pipe of the air supply device is connected to the air vent.

[0019] Optionally, the outer peripheral side of the gear-shaped structural component has a plurality of external teeth distributed at circumferential intervals around its axis, and each of the external teeth is provided with the cutting blade.

[0020] Optionally, each of the external teeth is a helical tooth, and the inclination directions of two adjacent external teeth are opposite, each of the cutting blades is arranged along the extension direction of the external teeth, and the inclination directions of two adjacent cutting blades are opposite.

[0021] Optionally, the two cutting blades separated by one cutting blade have the same inclination angle relative to the axis of the gear-shaped structure.

[0022] Optionally, the support rod comprises a circular tubular structure.

[0023] Optionally, the drill bit includes a drill body and a drill blade, wherein the drill blade is provided on a top side of the drill body away from the gear-shaped structural component, and the drill blade is provided on a peripheral side of the drill body.

[0024] Optionally, the drill bit blade and the cutting blade are both cemented carbide blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting part of this application are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention.

[0026] Figure 1 A schematic structural diagram of a foreign matter cleaning tool provided in this embodiment;

[0027] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0028] Figure 3 This is a structural schematic diagram of a foreign matter cleaning tool provided in this embodiment extending into a straight blowing pipe and a tuyere sleeve.

[0029] Icons: 1-support rod; 2-drill bit; 3-gear-shaped structural part; 4-air supply device; 5-rotational drive device; 6-direct blowing pipe; 7-air inlet sleeve; 8-foreign matter; 21-drill body; 22-drill bit blade; 23-purge outlet hole; 31-external teeth. DETAILED DESCRIPTION

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with examples. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations can be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as part of one embodiment can be used in another embodiment to produce yet another embodiment. Therefore, it is intended that the present invention encompass such modifications and variations as come within the scope of the appended claims and their equivalents.

[0031] In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention. The terms "connected", "connected", and "set" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] refer to Figure 1 、 Figure 2 and Figure 3As shown, the utility model provides a foreign body cleaning tool for cleaning the blast furnace straight blowing pipe 6 and the tuyere small sleeve 7. The foreign body cleaning tool specifically comprises: a support rod 1, a drill bit 2, a gear-shaped structural member 3, an air supply device 4 and a rotary drive device 5. Specifically, the support rod 1 has a first end and a second end opposite to each other. The support rod 1 extends along the inner cavity of the straight blowing pipe 6 and the tuyere small sleeve 7. The first end of the support rod 1 is used to extend into the straight blowing pipe 6 or the tuyere small sleeve 7 and extend into the inner cavity of the straight blowing pipe 6 and the tuyere small sleeve 7. The cavity inside the straight blowing pipe 6 and the tuyere small sleeve 7 is an air supply channel. When the foreign body 8 in the air supply channel needs to be cleaned, it can be called a channel to be cleaned. The support rod 1 needs to extend into the channel to be cleaned for cleaning. In addition, The support rod 1 has a hollow structure, which extends along the extension direction of the axis of the support rod 1. The hollow structure forms an air flow channel, and the air flow channel is formed with an air inlet at the end of the second end of the support rod 1. Preferably, the support rod 1 can be a circular tubular structure, specifically a steel pipe, and the side wall of the first end of the support rod 1 is formed with a purge outlet 23; the drill bit 2 is installed at the first end of the support rod 1; the gear-shaped structural member 3 is sleeved on the support rod 1, and is located on the side of the drill bit 2 facing the second end of the support rod 1. The gear-shaped structural member 3 is close to the drill bit 2 and is spaced apart from the drill bit 2. The outer peripheral side of the gear-shaped structural member 3 is provided with a plurality of cutting blades distributed circumferentially around its axis, and the cutting edges of the cutting blades face the axis away from the gear-shaped structural member 3. On one side of the center line, the cutting edge of the cutting blade is on the outer peripheral side of the gear box structure; the air supply pipe of the air supply device 4 is connected with the air inlet, so as to provide purge air into the air flow channel; the rotation drive device 5 is transmission-connected with the second end of the support rod 1, so as to drive the support rod 1 to rotate around its own axis. When the straight blowing pipe 6 or the air outlet small sleeve 7 needs to be cleaned, the first end of the support rod 1 can be extended from one end of the straight blowing pipe 6, the rotation drive device 5 is started and the air supply device 4 is opened, and the support rod 1 rotates while slowly extending into the straight blowing pipe 6, and then reciprocates along the inner cavity of the straight blowing pipe 6 and the air outlet small sleeve 7. Since the support rod 1 has a certain length, when the second end of the support rod 1 is driven to rotate, the rotation of the first end of the support rod 1 will produce Irregular centrifugal force is generated. In addition to the drill bit 2 being able to destroy and drill the foreign matter 8 in the straight blowing pipe 6 and the tuyere sleeve 7, the gear-shaped structural member 3 swings perpendicularly to the axial direction along the inner wall of the channel to be cleaned. The cutting blade of the gear-shaped structural member 3 generates a large rotary cutting destructive force, which has a destructive effect of impacting, cutting and crushing various foreign matter 8 attached to the inner wall of the straight blowing pipe 6 and the tuyere sleeve 7. Moreover, while the foreign matter 8 is being destroyed and crushed, the purge air outlet 23 at the first end of the support rod 1 will blow out high-pressure purge gas to blow up the crushed foreign matter, so that the drill bit 2 and the gear-shaped structural member 3 can easily clean the foreign matter that has not been destroyed. After the foreign matter in the channel to be cleaned is completely crushed and cleaned, the support rod 1 is taken out after the operation is completed.After the blast furnace is restored to production, the cut, crushed and loosened foreign matter can be blown into the hearth of the blast furnace with the high-temperature hot air and melted away, so that the air supply channel of the straight blowing pipe 6 and the tuyere small sleeve 7 is clean and free of foreign matter, avoiding interference with blast furnace production.

[0033] The above-mentioned foreign body cleaning tool can be inserted into the direct blowing pipe and the air outlet small sleeve to crush various foreign bodies in the direct blowing pipe and the air outlet small sleeve, and the foreign bodies on the inner wall can be cut and crushed thoroughly. It is suitable for cleaning different types of foreign bodies in the direct blowing pipe and the air outlet small sleeve, has strong compatibility, and can be operated by one person, which is fast, efficient, time-saving and labor-saving.

[0034] It should be noted that the reference Figure 3 As shown, in this embodiment, the foreign matter 8 in the straight blowing pipe 6 and the air outlet sleeve 7 is the bushing attached to the inner wall, as well as the mud blocking the air outlet, the accumulated slag and iron inside, etc., which can be crushed and loosened by the impact force of drilling, knocking, cutting, etc.

[0035] In addition, continue to refer to Figure 3 The above-mentioned support rod 1 moves back and forth in the channel to be cleaned. The second end of the support rod 1 can be moved back and forth by manually holding the support rod 1. Specifically, the main body of the rotary drive device 5 is manually held and the support rod 1 is moved back and forth in the channel to be cleaned by manpower; alternatively, a linear drive device can be provided to drive the support rod 1 to move back and forth along the extension direction of its axis to drive the support rod 1. Specifically, the support rod 1 is installed on the rotary drive device 5, and the rotary drive device 5 is installed on the linear drive device, so that the support rod 1 can rotate and move back and forth at the same time.

[0036] In one possible implementation, Figure 1 and Figure 2 As shown, the drill bit 2 has a cavity inside, and an opening that penetrates the cavity is provided on the side wall of the drill bit 2. The cavity is connected to the air flow channel, and the opening constitutes a purge outlet 23. The drill bit is configured as a hollow drill bit so that the purge gas is blown out on the side wall of the drill bit, so that when the drill bit drills the foreign matter, the crushed foreign matter can be blown away, making it easier to clean. Preferably, at least two spaced purge outlets 23 can be provided on the circumference of the drill bit to increase the air volume of the purge air. Exemplarily, two, three or four purge outlets 23 can be provided on the circumference of the drill bit, and the multiple purge outlets are evenly spaced around the circumference of the drill bit.

[0037] Regarding the optional setting of the rotary drive device, in one possible implementation, the rotary drive device 5 includes a pneumatic wrench, the output end of the pneumatic wrench is connected to the second end of the support rod 1; the exhaust gas outlet of the pneumatic wrench is connected to the air inlet of the air flow channel, and the air supply device 4 is reused as the air supply source for the pneumatic wrench. Specifically, the starting wrench has an air inlet channel and an exhaust channel inside, and the exhaust channel is connected to the exhaust gas outlet. The output end of the pneumatic wrench is provided with an internal channel, which is connected to the exhaust gas outlet and the air flow channel, so that the exhaust gas discharged from the exhaust gas outlet serves as a purge gas.

[0038] Regarding the optional setting of the rotary drive device, in another possible implementation, the rotary drive device 5 includes a hydraulic motor, and the output end of the hydraulic motor is connected to the second end of the support rod 1; the end of the second end of the support rod 1 is provided with a sleeve, and the sleeve is sleeved on the outer peripheral side of the support rod 1, the sleeve and the support rod 1 are rotatably connected, and the two ends of the sleeve are sealed to the support rod 1, and an annular cavity is formed between the inner wall of the sleeve and the outer wall of the support rod 1, the annular cavity is connected to the air inlet on the support rod 1, and an air vent connected to the annular cavity is provided on the side wall of the sleeve, and the air supply pipe of the air supply device 4 is connected to the air vent.

[0039] like Figure 2 As shown, in the above-mentioned foreign matter cleaning tool, for the gear-shaped structural member 3, a plurality of external teeth 31 are uniformly spaced around the circumference of the axial line of the gear-shaped structural member 3 on the outer peripheral side thereof, each external tooth 31 protrudes outward and extends along the extension direction of the axial line of the support rod 1, and a cutting blade is provided on each external tooth 31, and the cutting blade is arranged along the extension direction of the external tooth 31. Preferably, each external tooth 31 is a helical tooth, which is inclined relative to the axial line of the gear-shaped structural member 3, and the inclination directions of two adjacent external teeth 31 are opposite, and each cutting blade is arranged along the extension direction of the external tooth 31, and the inclination directions of two adjacent cutting blades are opposite. When the support rod 1 moves back and forth in the channel to be cleaned, the inclined and non-parallel arrangement of the external teeth 31 can generate a forward and backward thrust, thereby loosening the foreign matter, which is conducive to the removal of foreign matter.

[0040] Specifically, if Figure 2 As shown, the two cutting blades, separated by a cutting blade, have the same inclination angle relative to the axis of the gear-shaped structure. The multiple external teeth 31 are distributed so that every other helical tooth has the same inclination angle relative to its axis, facilitating machining. Furthermore, during forward and backward travel, the rotational force exerted on foreign matter on the inner wall is uniform, preventing excessive fluctuations.

[0041] like Figure 2As shown, in order to enhance the cutting ability of the drill bit, a blade can be provided on the drill bit. Specifically, the drill bit includes a drill body 21 and a drill blade 22. The drill blade 22 is provided on the top side of the drill body 21 away from the gear-shaped structure 3, and the drill blade 22 is provided on the circumference of the drill body 21. When the support rod 1 moves back and forth in the channel to be cleaned, the drill bit and the drill blade 22 installed thereon generate a rotating forward cutting force, which can easily crush foreign matter.

[0042] Furthermore, in the above-mentioned foreign matter cleaning tool, the drill blade 22 and the cutting blade are both carbide blades, which can have sufficient hardness to cut and crush foreign matter, thereby ensuring the service life of the drill bit and the gear-shaped structural member 3.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A foreign body cleaning tool for cleaning blast furnace direct blowing pipes and tuyere sleeves, characterized in that: include: A support rod, the support rod having a first end and a second end opposite to each other, the first end of the support rod being used to extend into a straight blowpipe or a tuyere sleeve, the support rod having a hollow structure therein, the hollow structure extending along the extension direction of the axis of the support rod to form an air flow channel, the air flow channel having an air inlet formed at the end of the second end of the support rod, and a purge air outlet formed on a side wall of the first end of the support rod; a drill bit, the drill bit being mounted on the first end of the support rod; a gear-shaped structural member, the gear-shaped structural member being sleeved on the support rod and located on a side of the drill bit facing the second end of the support rod, the gear-shaped structural member being close to the drill bit and spaced apart from the drill bit, the outer periphery of the gear-shaped structural member being provided with a plurality of cutting blades spaced circumferentially around the axis thereof, the cutting edges of the cutting blades being oriented toward a side away from the axis of the gear-shaped structural member; an air supply device, wherein the air supply pipe of the air supply device is connected to the air inlet and is used to provide purge air into the air flow channel; A rotation driving device is connected to the second end of the support rod and is used to drive the support rod to rotate around its own axis.

2. The foreign matter cleaning tool according to claim 1, characterized in that: The drill bit has a cavity inside, and an opening penetrating the cavity is provided on a side wall of the drill bit. The cavity is communicated with the air flow channel, and the opening constitutes the purge outlet.

3. The foreign matter cleaning tool according to claim 1, characterized in that: The rotary drive device includes a pneumatic wrench, the output end of the pneumatic wrench is connected to the second end of the support rod; the exhaust outlet of the pneumatic wrench is connected to the air inlet of the air flow channel, and the air supply device is reused as the air supply source of the pneumatic wrench.

4. The foreign matter cleaning tool according to claim 1, characterized in that: The rotation drive device includes a hydraulic motor, and the output end of the hydraulic motor is connected to the second end of the support rod; The end of the second end of the support rod is provided with a sleeve, and the sleeve is sleeved on the outer peripheral side of the support rod. The sleeve is rotatably connected to the support rod, and the two ends of the sleeve are sealed to the support rod. An annular cavity is formed between the inner wall of the sleeve and the outer wall of the support rod, and the annular cavity is connected to the air inlet on the support rod. An air vent connected to the annular cavity is provided on the side wall of the sleeve, and the air supply pipe of the air supply device is connected to the air vent.

5. The foreign matter cleaning tool according to any one of claims 1 to 4, characterized in that: The outer peripheral side of the gear-shaped structural component has a plurality of external teeth distributed at intervals in the circumferential direction around the axis of the gear-shaped structural component, and each of the external teeth is provided with the cutting blade.

6. The foreign matter cleaning tool according to claim 5, characterized in that: Each of the external teeth is a helical tooth, and the inclination directions of two adjacent external teeth are opposite. Each of the cutting blades is arranged along the extension direction of the external teeth, and the inclination directions of two adjacent cutting blades are opposite.

7. The foreign matter cleaning tool according to claim 4, characterized in that: The two cutting blades separated by the cutting blade have the same inclination angle relative to the axis of the gear-shaped structure.

8. The foreign matter cleaning tool according to claim 1, characterized in that: The support rod comprises a circular tubular structure.

9. The foreign matter cleaning tool according to claim 1, characterized in that: The drill bit includes a drill body and a drill blade. The drill blade is arranged on the top side of the drill body away from the gear-shaped structural component, and the drill blade is arranged on the peripheral side of the drill body.

10. The foreign matter cleaning tool according to claim 9, characterized in that: The drill bit blade and the cutting blade are both cemented carbide blades.

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