Coke cleaning machine for charging pipe of silver furnace

Abstract

The invention discloses a silver furnace charging pipe decoking machine, and relates to the technical field of metallurgical equipment maintenance, the decoking machine comprises a lifting mechanism, a decoking mechanism, a scraper mechanism and a ball hammer mechanism; the lifting mechanism is used for conveying the decoking mechanism into the feeding pipe in a lifting mode, the decoking mechanism has a rotating function and is installed on the lifting mechanism, and the scraper mechanism is installed on the outer side of the decoking mechanism and enables a scraper to rotate through centrifugal force to clean coking objects on the inner wall of the feeding pipe. The ball hammer mechanism is installed at the bottom end of the decoking mechanism and hammers coked objects on the inner wall of the feeding pipe through centrifugal force in a high-speed rotating mode. The automatic cleaning device can realize automatic cleaning of the coking materials in the feeding pipe under the condition that the silver furnace is not stopped, has the advantages of high cleaning efficiency, good safety, simplicity and convenience in operation, avoidance of manual high-temperature operation and the like, and effectively solves the problem of feeding interruption caused by coking blockage.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment maintenance technology, and more specifically to a coking machine for a silver furnace feeding pipe. Background Technology

[0002] The Baiyin furnace is a side-blown fixed-bed smelting furnace developed by China Nonferrous Metals Industry Corporation in conjunction with related units. It is primarily used for the direct processing of copper sulfide concentrate for matte smelting. The Baiyin copper smelting process uses a single-chamber smelting furnace where a partition wall approximately in the middle of the molten pool divides the pool into two main parts: a smelting zone and a refining zone. The charge is continuously added to the smelting zone through a charging hole at the top of the furnace. Air is blown in from tuyeres deep within the molten pool in the smelting zone, violently agitating the melt. The charge falling into the flame pool is rapidly melted by the melt and undergoes a two-phase oxidation reaction with oxygen in the bubbles, releasing a large amount of heat and maintaining the furnace temperature in the smelting zone at 1150~1200℃, while the melt temperature remains at 1100℃. The copper matte and slag formed in the smelting zone flow into the refining zone of the furnace through channels below the partition wall. Burners are installed on the end walls of the clarification zone. The heat released by the combustion of fuel maintains the temperature of this zone at 1300~1350℃, raising the slag temperature to 1200~1250℃ and the copper matte temperature to 1100~1150℃. After clarification by heating, the slag and copper matte are intermittently discharged from the slag discharge port and the siphon port, respectively.

[0003] Because the silver furnace is a side-blown, pool-type smelting furnace, the blowing process inside is characterized by intense turbulence and agitation. During this process, the splashed high-temperature liquid, upon contact with the bottom of the water jacket of the feeding pipe, cools and solidifies rapidly due to its extremely high temperature, forming a bond. Failure to clean this bond promptly can cause material blockage at the feeding port, leading to reduced or stopped feeding of the silver furnace. Current technology primarily relies on manual cleaning during furnace shutdown, which is not only inefficient but also poses safety hazards such as burns from high temperatures and poisoning from fumes, severely impacting production efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems by providing a coking machine for the feeding pipe of a silver furnace, which can automatically clean the material blockage at the feeding port in the suspension smelting state without stopping the furnace.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] A coke removal machine for a silver furnace feeding pipe, comprising:

[0007] The lifting mechanism is used to lift the coke removal mechanism into the feeding pipe, so as to achieve the effect of automatically lifting the coke removal mechanism to clean the inner wall of the feeding pipe from top to bottom.

[0008] The coke removal mechanism has a rotating function and is installed on the lifting mechanism. The coke removal mechanism rotates during the operation of the lifting mechanism.

[0009] The scraper mechanism is installed on the outside of the coke removal mechanism. It uses centrifugal force to rotate the scraper and clean the coke deposits on the inner wall of the feeding pipe.

[0010] The ball hammer mechanism is installed at the bottom of the decoking mechanism. It uses centrifugal force to rotate at high speed and hammer the coke deposits on the inner wall of the feeding pipe.

[0011] As a preferred embodiment of the present invention, the lifting mechanism includes a base, a frame, two ball screws, and a servo motor. The lower end of the frame is fixed to the base, the two ball screws are installed inside the frame, and the upper ends of the two ball screws are installed with the servo motor. The desiccant removal mechanism is installed between the two ball screws.

[0012] As a preferred embodiment of the present invention, the bottom surface of the base is equipped with a plurality of casters, and a counterweight box is fixedly installed on the rear side of the upper surface of the base.

[0013] As a preferred embodiment of the present invention, two mounting blocks are fixedly connected to the upper and lower sides of the front surface of the frame, and guide rods are fixedly connected between each pair of the four mounting blocks. Slider blocks are movably fitted on the outer side of each of the two guide rods, and the sliders are mounted on the outer side of the ball screw.

[0014] As a preferred embodiment of the present invention, the upper and lower ends of the two ball screws are rotatably connected to the frame through bearing seats, and a large gear is fixedly installed at the top of the two ball screws. Ball nut receiving seats are fixedly installed on both sides of the upper end of the coke clearing mechanism, and the ball nut receiving seats are detachably connected to the corresponding sliders.

[0015] As a preferred embodiment of the present invention, a gearbox is installed at the output end of the servo motor, and small gears are fixedly installed at the output ends on both sides of the gearbox, and the two small gears are respectively meshed with two large gears.

[0016] As a preferred embodiment of the present invention, the coke removal mechanism includes a drive motor, a housing, and a central spindle. The central spindle is fixedly and through-connected to the housing. The upper end of the central spindle is installed with the output end of the drive motor. The drive motor is installed on the housing. The lower side of the housing is detachably connected to the upper side of the slider.

[0017] As a preferred embodiment of the present invention, the scraper mechanism includes a fixed base, a mounting plate, multiple pins, multiple scrapers, multiple connecting rods, and a counterweight ring; the fixed base and the mounting plate are both fixedly mounted on the central main shaft, the multiple pins are fixedly connected between the fixed base and the mounting plate in a circular array, the multiple scrapers are respectively hinged to the corresponding pins, one end of the multiple connecting rods is detachably connected to the middle of the corresponding scraper, and the other end of the multiple connecting rods is detachably connected to a counterweight ring, the counterweight ring being movably sleeved with the central main shaft.

[0018] As a preferred embodiment of the present invention, the ball hammer mechanism includes a clamping ring, a universal joint, and a ball hammer connected in sequence. The clamping ring is detachably connected to the lower end of the central spindle, and a toothed metal layer is fixedly connected to the outer side of the ball hammer.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. Achieve uninterrupted furnace cleaning: This invention can automatically clean the coking material in the feeding pipe under normal smelting conditions in a silver furnace without stopping the furnace for cooling, thus avoiding production interruptions and significantly improving production efficiency.

[0021] 2. Significant cleaning effect: The combination of the rotating centrifugal scraping of the scraper mechanism and the high-speed centrifugal hammering of the ball hammer mechanism forms a composite cleaning mode of "scraping + hammering", which can effectively remove coking materials of different hardness and thickness, and the cleaning is thorough and reliable.

[0022] 3. Safe and convenient operation: The lifting mechanism enables automated lifting, allowing operators to remotely operate from a safe location away from the high-temperature feeding pipe, completely avoiding the safety risks of manual high-temperature operations and reducing labor intensity.

[0023] 4. High adaptability: The scraper mechanism adopts an articulated scraper and adjusts the centrifugal force through a counterweight ring, which can automatically adjust the scraping force according to the hardness of the coking material; the ball hammer mechanism adopts a universal joint connection, which can adapt to the irregular shape of the inner wall of the feeding pipe and ensure that there are no dead corners in the cleaning.

[0024] 5. Stable and reliable structure: The dual ball screw symmetrical drive, combined with the guide rod, ensures the smoothness and accuracy of the lifting process; the base counterweight box design enhances the overall stability of the equipment and prevents the equipment from tipping over due to vibration during the cleaning process.

[0025] 6. High degree of automation: The lifting height is precisely controlled by a servo motor, and the rotation speed is adjusted by a drive motor, which enables precise control of the cleaning process and improves cleaning efficiency and quality. Attached Figure Description

[0026] Figure 1 This is the front view of the present invention;

[0027] Figure 2 This is the left view of the present invention;

[0028] Figure 3 This is a structural schematic diagram of the lifting mechanism of the present invention;

[0029] Figure 4 This is a front view of the lifting mechanism of the present invention;

[0030] Figure 5 This is a front view of the desiccant removal mechanism of the present invention;

[0031] Figure 6 This is a schematic diagram of the scraper mechanism of the present invention. Figure 1 ;

[0032] Figure 7 This is a schematic diagram of the scraper mechanism of the present invention. Figure 2 ;

[0033] Figure 8 This is a schematic diagram of the ball-and-hammer mechanism of the present invention.

[0034] Figure label:

[0035] 1. Lifting mechanism;

[0036] 101. Base; 1011. Casters; 1012. Counterweight box;

[0037] 102. Frame; 1021. Mounting block; 1022. Guide rod; 1023. Slider;

[0038] 103. Ball screw; 1031. Bearing housing; 1032. Large gear; 1033. Ball nut support;

[0039] 104. Servo motor; 1041. Gearbox; 1042. Pinion gear;

[0040] 2. Coke removal mechanism; 201. Drive motor; 202. Housing; 203. Central spindle;

[0041] 3. Scraper mechanism; 301. Fixed base; 302. Mounting plate; 3021. Slide rail; 303. Pin; 304. Scraper; 305. Connecting rod; 306. Counterweight ring;

[0042] 4. Ball hammer mechanism; 401. Clamping ring; 402. Universal joint; 403. Ball hammer; 404. Toothed metal layer. Detailed Implementation

[0043] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0044] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0045] Example 1

[0046] Please see Figure 1-8 The present invention provides the following technical solution:

[0047] A coke removal machine for a silver furnace feeding pipe includes a lifting mechanism 1, a coke removal mechanism 2, a scraper mechanism 3, and a ball hammer mechanism 4. The lifting mechanism 1 is used to vertically lift and transport the coke removal mechanism 2 into the feeding pipe. The coke removal mechanism 2 is mounted on the lifting mechanism 1 and has a high-speed rotation function. The scraper mechanism 3 is mounted on the outside of the coke removal mechanism 2, and the ball hammer mechanism 4 is mounted at the bottom end of the coke removal mechanism 2.

[0048] The overall coke removal machine is pushed to the top of the feeding port of the silver furnace via casters 1011. A counterweight is placed in the counterweight box 1012 at the rear of the base 101 to ensure the machine's center of gravity is behind the geometric center of the base, preventing the cantilever section from tipping over. The frame 102 is fixed to the base 101 with high-strength bolts. Two sets of ball screws 103 are symmetrically arranged inside the frame 102, with the upper and lower ends of the screws fixed to the frame 102 via bearing seats 1031. The servo motor 104 synchronously drives the left and right pinions 1042 via a reduction gearbox 1041. The pinions 1042 mesh with the large gear 1032, achieving absolute synchronous rotation of the two screws. The coke removal mechanism 2 is integrated with the left and right sliders 1023 via ball nut bearing seats 1033. The sliders 1023 are fitted onto two guide rods 1022, forming a "double screw + double guide rod" gantry-type lifting module, ensuring that the coke removal mechanism 2 operates without swaying or twisting during lifting.

[0049] (a) The specific structure of the lifting mechanism:

[0050] The lifting mechanism 1 includes a base 101, a frame 102, two ball screws 103, and a servo motor 104. Casters 1011 are installed at each of the four corners of the base 101's bottom surface for easy movement of the entire device. A counterweight box 1012 is fixedly installed on the rear side of the upper surface of the base 101, allowing for the addition of counterweights as needed to ensure stability during cleaning operations. The lower end of the frame 102 is welded and fixed to the base 101. The two ball screws 103 are vertically mounted symmetrically on the inner side of the frame 102 via bearing seats 1031, and large gears 1032 are fixedly installed at the top of each ball screw 103. Two mounting blocks 1021 are welded to the upper and lower sides of the front surface of the frame 102. Guide rods 1022 are fixedly connected between the corresponding upper and lower mounting blocks 1021. The two guide rods 1022 are arranged symmetrically from left to right. Two sliders 1023 are movably mounted on the outer side of each guide rod 1022, and the sliders 1023 can slide up and down along the guide rod 1022. The coke removal mechanism 2 is connected to the ball screw 103 through a ball nut bearing seat 1033. The ball nut bearing seat 1033 is detachably connected to the corresponding slider 1023 by bolts, forming a dual guarantee of guidance and drive. The bearing seats 1031 installed at the upper and lower ends of the ball screw 103 are angular contact ball bearings and linear bearings, respectively.

[0051] The servo motor 104 is fixedly mounted on the top of the frame 102, and a reduction gearbox 1041 is installed at its output end. Small gears 1042 are fixedly mounted on the output ends of both sides of the reduction gearbox 1041. The two small gears 1042 mesh with two large gears 1032 respectively to achieve synchronous drive. The servo motor 104 is controlled by a programmable controller, which can precisely adjust the lifting height and speed to adapt to the cleaning needs of feeding pipes of different lengths.

[0052] (II) Specific structure of the coke removal mechanism:

[0053] The coke removal mechanism 2 includes a drive motor 201, a housing 202, and a central spindle 203. The central spindle 203 is vertically positioned and fixedly connected to the housing 202. The upper end of the central spindle 203 is mounted to the output end of the drive motor 201 via a coupling. The drive motor 201 is bolted to the top of the housing 202. The lower side of the housing 202 is detachably connected to the upper side of the slider 1023 via flange bolts, ensuring that the drive motor 201 can rise and fall synchronously with the slider 1023. The drive motor 201 is a variable frequency speed control motor, with adjustable speed, allowing selection of a suitable cleaning speed based on the hardness of the coke.

[0054] (III) Specific structure of the scraper mechanism:

[0055] The scraper mechanism 3 includes a fixed base 301, a mounting plate 302, multiple pins 303, multiple scrapers 304, multiple connecting rods 305, and a counterweight ring 306. The fixed base 301 is fixed to the outside of the central main shaft 203 by clamping, and the mounting plate 302 is fixed to the lower part of the fixed base 301. The four pins 303 are arranged in a ring array and vertically installed on the inside of four slide rails 3021. Each pin 303 is connected to a scraper 304, and the scraper 304 moves with the pin 303. The bottom of each scraper 304 is detachably connected to a connecting rod 305 by bolts. The other end of the four connecting rods 305 is detachably connected to a counterweight ring 306. The counterweight ring 306 is movably sleeved on the central main shaft 203 and can rotate and slide up and down on the outside of the main shaft. The weight of the counterweight ring 306 can be selected according to the scraping force requirements. When the central spindle 203 rotates, the scraper 304 opens under the action of centrifugal force, and the counterweight ring 306 slides upward under the action of centrifugal force. The opening angle of the scraper 304 is limited by the connecting rod 305 to realize the automatic adjustment of the scraping force.

[0056] The scraper 304 is made of high-strength wear-resistant alloy steel, and its cutting edge is hardened, giving it excellent wear resistance and impact resistance. The outer contour of the scraper 304 matches the curvature of the inner wall of the feed tube to ensure effective scraping.

[0057] (iv) Specific structure of the ball-and-hammer mechanism:

[0058] The ball hammer mechanism 4 includes a clamping ring 401, a universal joint 402, and a ball hammer 403. The clamping ring 401 is detachably connected to the lower end of the central spindle 203 by bolts, facilitating replacement and maintenance. The upper end of the universal joint 402 is connected to the clamping ring 401, and the lower end of the universal joint 402 is connected to the ball hammer 403, allowing the ball hammer 403 to flexibly adapt to cleaning needs at different angles within the feeding tube. The ball hammer 403 uses a solid alloy steel ball, with a toothed metal layer 404 fixedly connected to its outer side by welding. The toothed metal layer 404 can efficiently hammer and break up hard coke deposits. The diameter of the ball hammer 403 is smaller than the inner diameter of the feeding tube, ensuring the hammering effect during high-speed rotation.

[0059] Working principle and usage process of this invention:

[0060] Before use, move the decoking machine directly above the feeding pipe of the silver furnace, aligning the central spindle 203 with the center line of the feeding pipe. Place an appropriate amount of counterweight in the counterweight box 1012 to ensure equipment stability. Start the servo motor 104, which drives the pinion gear 1042 to rotate the large gear 1032 via the reduction gearbox 1041, causing the two ball screws 103 to rotate synchronously. The slider 1023 drives the decoking mechanism 2 to descend to the predetermined height inside the feeding pipe. Start the drive motor 201, which drives the central spindle 203 to rotate the scraper mechanism 3 and the ball hammer mechanism 4 at high speed. The scraper 304 automatically opens and adheres tightly to the inner wall of the feeding pipe under centrifugal force, rotating and scraping the coking material on the inner wall during the lifting and lowering process. At the same time, the ball hammer 403 rotates at high speed under centrifugal force, hammering the hard coking blocks on the bottom and side walls of the feeding pipe. The servo motor 104 controls the forward and reverse rotation of the desiccant removal mechanism 2 to reciprocate up and down within the feeding tube. Combined with the speed adjustment of the drive motor 201, this thoroughly cleans the entire inner wall of the feeding tube. After cleaning, the servo motor 104 is started in reverse to lift the desiccant removal mechanism 2 back to its initial position, and the drive motor 201 is turned off, completing one cleaning operation.

[0061] During the cleaning process, operators can control the equipment from a safe area using a remote control and monitor the cleaning progress in real time through an observation window or video surveillance. The speed of the drive motor 201 and the lifting speed of the servo motor 104 can be adjusted according to the thickness and hardness of the coking material to achieve the best cleaning effect. For particularly hard coking materials, multiple reciprocating cleaning operations or an alternating "scraping-hammering-scraping" mode can be used to ensure thorough cleaning.

[0062] The technical solutions provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only for helping to understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the embodiments of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A coke removal machine for a silver furnace feeding pipe, comprising: Lifting mechanism (1) is used to lift the coking cleaning mechanism (2) into the feeding pipe, so as to achieve the effect of automatic lifting and cleaning mechanism (2) cleaning the inner wall of the feeding pipe from top to bottom; The coke removal mechanism (2) has a rotation function and is installed on the lifting mechanism (1). The coke removal mechanism (2) rotates during the operation of the lifting mechanism (1). The scraper mechanism (3) is installed on the outside of the coking removal mechanism (2). The scraper rotates and cleans the coking material on the inner wall of the feeding pipe by centrifugal force. The ball hammer mechanism (4) is installed at the bottom of the coking removal mechanism (2) and uses centrifugal force to rotate at high speed and hammer the coking material on the inner wall of the feeding pipe.

2. The coke removal machine for the silver furnace feeding pipe according to claim 1, characterized in that: The lifting mechanism (1) includes a base (101), a frame (102), two ball screws (103), and a servo motor (104). The lower end of the frame (102) is fixed to the base (101), the two ball screws (103) are installed inside the frame (102), and the upper ends of the two ball screws (103) are installed on the servo motor (104). The desiccant removal mechanism (2) is installed between the two ball screws (103).

3. The coke removal machine for the silver furnace feeding pipe according to claim 2, characterized in that: The base (101) is equipped with multiple casters (1011) on its bottom surface, and a counterweight box (1012) is fixedly installed on the rear side of the upper surface of the base (101).

4. The coke removal machine for the silver furnace feeding pipe according to claim 2, characterized in that: Two mounting blocks (1021) are fixedly connected to the upper and lower sides of the front surface of the frame (102). Guide rods (1022) are fixedly connected between each pair of the four mounting blocks (1021). Slider blocks (1023) are movably fitted on the outer side of each of the two guide rods (1022). The sliders (1023) are mounted on the outer side of the ball screw (103).

5. The coke removal machine for the silver furnace feeding pipe according to claim 2, characterized in that: Bearing seats (1031) are installed between the upper and lower ends of the ball screw (103) and the frame (102). The upper end of the ball screw (103) passes through the bearing seat (1031) and the frame (102) and extends to the top of the frame (102). Large gears (1032) are fixedly installed on the upper ends of the two ball screws (103). A ball nut receiving seat (1033) is movably fitted on the outer side of the ball screw (103). The ball nut receiving seat (1033) is detachably connected to the corresponding slider (1023).

6. The coke removal machine for the silver furnace feeding pipe according to claim 2, characterized in that: The output end of the servo motor (104) is equipped with a gearbox (1041). Small gears (1042) are fixedly installed on the output ends of the gearbox (1041) on both the left and right sides. The two small gears (1042) are respectively meshed with two large gears (1032).

7. The coke removal machine for the silver furnace feeding pipe according to claim 1, characterized in that: The coke clearing mechanism (2) includes a drive motor (201), a housing (202), and a central spindle (203). The central spindle (203) is fixedly connected to the housing (202). The upper end of the central spindle (203) is installed with the output end of the drive motor (201). The drive motor (201) is installed on the housing (202). The lower side of the housing (202) is detachably connected to the upper side of the slider (1023).

8. The coke removal machine for the silver furnace feeding pipe according to claim 1, characterized in that: The scraper mechanism (3) includes a fixed base (301) fixedly fitted with the central spindle (203). The bottom of the fixed base (301) is fixedly connected to a mounting plate (302). Multiple slide rails (3021) are provided on the upper side of the mounting plate (302). Pins (303) are movably installed on the inner side of each of the multiple slide rails (3021). Scrapers (304) are fixedly installed at the lower end of each of the multiple pins (303). Connecting rods (305) are detachably connected to the lower side of each of the multiple scrapers (304). A counterweight ring (306) is detachably connected to the other end of each of the multiple connecting rods (305). The counterweight ring (306) is movably sleeved with the central spindle (203).

9. The coke removal machine for the silver furnace feeding pipe according to claim 1, characterized in that: The ball hammer mechanism (4) includes a clamping ring (401), a universal joint (402), and a ball hammer (403) connected in sequence. The clamping ring (401) is detachably connected to the lower end of the central spindle (203), and a toothed metal layer (404) is fixedly connected to the outside of the ball hammer (403).

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