Gunning device for brick gas passage of coke oven

Abstract

The invention discloses a gunning device for a brick gas passage of a coke oven, which comprises a gunning component communicated with the interior of a vertical pipe, a three-way pipe arranged outside the vertical pipe, a filtering component communicated with the three-way pipe, and a hanging frame arranged above a horizontal pipe, the guniting assembly comprises a guniting machine, a spray gun rod arranged in the vertical pipe and a first guniting pipe communicated between the guniting machine and the spray gun rod, the bottom end of the spray gun rod is movably connected to the hanging frame, the three-way pipe comprises a vertical pipe and a transverse pipe which are communicated with each other and perpendicular to each other, the bottom end of the vertical pipe is inserted into the vertical pipe, and a sealing sleeve is arranged between the spray gun rod and the vertical pipe. The horizontal position of the sealing sleeve is matched with the horizontal position of the bottom wall of the transverse pipe, and the filtering assembly comprises a filtering barrel and a second slurry conveying pipe communicated between the filtering barrel and the transverse pipe; according to the invention, the time and the strength of manually fixing the spray gun by an operator are reduced, the artificial fatigue is reduced, redundant slurry can flow into the filtering barrel through the second slurry conveying pipe through the transverse pipe of the three-way pipe to be filtered and recycled, and waste is avoided.

Description

Technical Field

[0001] This invention belongs to the technical field of coke oven brick gas ducts, and particularly relates to a spraying and patching device for coke oven brick gas ducts. Background Technology

[0002] As a core piece of equipment in industries such as steel and chemicals, the stable operation of coke ovens directly affects production efficiency and energy consumption. The brick gas duct, a crucial channel for coke oven gas transportation, is vital for ensuring the thermal efficiency of the coke oven. Repairing and patching the brick gas duct is a key aspect of coke oven thermal maintenance. By filling gaps in the bricks and repairing damaged areas, it effectively ensures the duct's tightness, reduces gas leakage, and lowers the coke oven's calorific value. The tightness of the brick gas duct not only directly affects the coke oven's calorific value but is also closely related to the temperature distribution of the flue and main flue, thus significantly impacting the safety and stability of the on-site operating environment. Therefore, regular or irregular repair and maintenance of the brick gas duct is an indispensable measure to ensure the long-term, efficient, and safe operation of the coke oven.

[0003] In the spraying process of vertical brick gas ducts, numerous problems urgently need to be addressed due to the unique structure. Traditional spraying methods have significant drawbacks: high manual labor intensity, requiring operators to manually hold the spray gun for extended periods, leading to fatigue and impacting work efficiency and quality; grout flowing downwards from the bottom of the T-junction where the spray gun enters, causing waste and splashing onto operators, affecting the environment and health; excess grout easily enters the horizontal pipes, causing blockages, affecting heating system operation, increasing maintenance costs and safety hazards; and the lack of effective treatment for excess grout discharge wastes resources, pollutes the environment, and increases cleaning difficulty and costs. Current methods involve sealing and clogging the bottom of the T-junction with waste cotton yarn, but this still suffers from drawbacks such as high physical exertion for spraying personnel, grout splashing, on-site pollution, and the need for large amounts of water rinsing. These methods fail to solve the problems of high labor intensity, pipe blockage, resource waste, and environmental pollution. Therefore, a spraying device for coke oven brick gas ducts is urgently needed. Summary of the Invention

[0004] To address some or all of the technical problems existing in the prior art, the present invention provides a spraying device for a coke oven brick gas duct. The spraying device is disposed between the brick gas duct and the horizontal pipe. A vertical pipe is connected to the bottom of the brick gas duct. The spraying device includes a spraying assembly connected to the inside of the vertical pipe, a tee pipe disposed outside the vertical pipe, a filter assembly connected to the tee pipe, and a bracket disposed above the horizontal pipe. The spraying assembly includes a spraying machine, a spray gun rod disposed inside the vertical pipe, and a first slurry delivery pipe connecting the spraying machine and the spray gun rod. The bottom end of the spray gun rod is movably connected to the bracket. The tee pipe includes a vertical pipe and a horizontal pipe that are connected to each other and perpendicular to each other. The bottom end of the vertical pipe is inserted into the vertical pipe. A sealing sleeve is disposed between the spray gun rod and the vertical pipe. The horizontal position of the sealing sleeve matches the horizontal position of the bottom wall of the horizontal pipe. The filter assembly includes a filter barrel and a second slurry delivery pipe connecting the filter barrel and the horizontal pipe.

[0005] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, the outer periphery of the sealing sleeve is sealed to the inner wall of the vertical pipe by a sealing ring, and the inner wall of the sealing sleeve is sealed to the outer periphery of the spray gun rod by the sealing ring.

[0006] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, a conical expansion plug is provided at the bottom end of the vertical pipe, and one end of the conical expansion plug is connected to a gas filling and releasing connector via a gas guide pipe pull rope. Multiple anti-detachment rings are provided on the circumference of the conical expansion plug.

[0007] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, a suspension assembly is provided between the tee pipe and the riser pipe. The suspension assembly includes a strap wrapped around the outer periphery of the tee pipe, a spray gun fixing sleeve provided on the strap, and an adjuster provided on the strap.

[0008] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, a fixing groove is provided on the outer periphery of the bottom end of the spray gun rod, and the spray gun fixing sleeve is fitted on the outer periphery of the fixing groove.

[0009] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, the two ends of the binding strap are respectively provided with a first plug and a first buckle that match each other, and the binding strap is wrapped around the outer periphery of the three-way pipe after the first plug and the first buckle are fastened.

[0010] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, the binding strap has two matching rings in the middle, and the free ends of the two rings are respectively provided with matching second plugs and second buckles. After the second plugs and second buckles are fastened, the two rings are wrapped around the outer periphery of the riser.

[0011] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, a branch pipe is provided on the lower outer periphery of the spray gun rod, and the free end of the branch pipe is connected to the first slurry conveying pipe through a first quick connector.

[0012] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, the second slurry delivery pipe is connected to the horizontal pipe via a second quick connector.

[0013] Furthermore, in the above-mentioned spraying device for the coke oven brick gas duct, the top of the filter barrel is covered with a cover plate, and multiple layers of filter plates are installed inside. A through hole is opened in the center of the cover plate, and the end of the second slurry conveying pipe is inserted into the through hole.

[0014] The spraying and patching device for the coke oven brick gas duct of the present invention has the following advantages and positive effects:

[0015] (1) The present invention supports the spray gun rod by means of a bracket and straps, which reduces the time and intensity of manual fixing of the spray gun by the operator, reduces the fatigue of the operator, and thus improves the work efficiency and quality. By matching the horizontal position of the sealing sleeve with the horizontal position of the bottom wall of the horizontal pipe, it can effectively prevent the slurry from flowing down to the bottom of the three-way pipe where the spray gun extends, thus avoiding the problem of slurry waste and splashing on the operator, improving the working environment and protecting the health of the operator.

[0016] (2) By setting up a filter assembly, the present invention allows excess slurry to flow into the filter tank through the horizontal pipe of the three-way pipe and the second slurry conveying pipe for filtration and recycling, preventing excess slurry from entering the horizontal pipe and causing blockage, ensuring the normal operation of the heating system, realizing resource recycling, reducing environmental pollution, and reducing cleaning difficulty and cost. In addition, a conical expansion plug is set at the bottom of the vertical pipe, which can be expanded and contracted by filling and releasing air through the air filling and releasing joint, which can effectively seal the bottom of the vertical pipe and prevent slurry from leaking from the bottom of the vertical pipe. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for further understanding of the embodiments of the present invention and constitute a part of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0018] Figure 1 This is a schematic diagram of the spraying and patching device for the coke oven brick gas duct of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the three-way pipe in the spraying device for the coke oven brick gas duct of the present invention.

[0020] Figure 3 This is a schematic diagram of the suspension assembly in the spraying device for the coke oven brick gas duct of the present invention.

[0021] Figure 4 This is a schematic diagram of the conical expansion plug in the spraying device for the coke oven brick gas duct of the present invention.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Riser; 2. T-joint; 21. Vertical pipe; 22. Horizontal pipe; 3. Spray gun rod; 31. Branch pipe; 32. Fixing groove; 4. Shotcrete machine; 41. First grout delivery pipe; 42. First quick connector; 5. Tie strap; 51. Ring strap; 52. Second plug; 53. Second buckle; 54. First plug; 55. First buckle; 56. Regulator; 57. Spray gun fixing sleeve; 6. Hanger; 7. Sealing sleeve; 71. Sealing ring; 8. Filter barrel; 81. Second grout delivery pipe; 82. Second quick connector; 9. Conical expansion plug; 91. Air guide rope; 92. Air filling / draining connector; 93. Anti-fall ring; 100. Brick gas duct. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] This invention provides a spraying device for the gas duct of a coke oven brick, such as... Figures 1 to 4As shown, the spraying device is located between the brick gas duct 100 and the horizontal pipe (not shown in the figure). A riser 1 is connected to the bottom of the brick gas duct 100. The spraying device includes a spraying assembly connected inside the riser 1, a tee pipe 2 located outside the riser 1, a filter assembly connected to the tee pipe 2, and a bracket 6 located above the horizontal pipe. The bracket 6 supports the spray gun rod 3 to reduce the labor intensity of the operator. The spraying assembly includes a spraying machine 4, a spray gun rod 3 located inside the riser 1, and a first grout delivery pipe 41 connecting the spraying machine 4 and the spray gun rod 3. The bottom end of the spray gun rod 3 is movably connected to... The nozzle is attached to the bracket 6, so the operator does not need to manually fix the spray gun rod 3 for a long time, reducing physical exertion. The three-way pipe 2 includes a vertical pipe 21 and a horizontal pipe 22 that are connected to each other and perpendicular to each other. The bottom end of the vertical pipe 1 is inserted into the vertical pipe 21. A sealing sleeve 7 is provided between the spray gun rod 3 and the vertical pipe 21. The horizontal position of the sealing sleeve 7 matches the horizontal position of the bottom wall of the horizontal pipe 22, so that excess slurry can flow smoothly from the sealing sleeve 7 into the horizontal pipe 22. The filter assembly includes a filter bucket 8 and a second slurry conveying pipe 81 that connects the filter bucket 8 and the horizontal pipe 22. The filter assembly is used to recover and filter excess slurry.

[0026] Furthermore, in the spraying device for the coke oven brick gas duct of the present invention, the outer periphery of the sealing sleeve 7 is sealed on the inner wall of the vertical pipe 21 through the sealing ring 71, and the inner wall of the sealing sleeve 7 is sealed on the outer periphery of the spray gun rod 3 through the sealing ring 71. This double sealing structure can effectively prevent the slurry from flowing down.

[0027] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, a conical expansion plug 9 is provided at the bottom end of the vertical pipe 21. One end of the conical expansion plug 9 is connected to a gas filling and releasing connector 92 through a gas guide pipe and a pull rope 91. Gas is filled into the conical expansion plug 9 through the gas filling and releasing connector 92, which can cause the conical expansion plug 9 to expand and thus seal the bottom of the vertical pipe 21. After the gas is released, the conical expansion plug 9 shrinks and is easy to remove. Multiple anti-detachment rings 93 are provided on the circumference of the conical expansion plug 9. More specifically, the number of anti-detachment rings 93 is 3. This arrangement increases the friction between the conical expansion plug 9 and the inner wall of the vertical pipe 21, preventing it from falling off during use.

[0028] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, a suspension assembly is provided between the tee pipe 2 and the riser pipe 1 to securely fix the tee pipe 2 and the spray gun rod 3. The suspension assembly includes a strap 5 wrapped around the outer periphery of the tee pipe 2, a spray gun fixing sleeve 57 provided on the strap 5, and an adjuster 56 provided on the strap 5. The tightness of the strap 5 can be adjusted by the adjuster 56 to adapt to pipes of different sizes.

[0029] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, a fixing groove 32 is provided on the outer periphery of the bottom end of the spray gun rod 3, and the spray gun fixing sleeve 57 is fitted on the outer periphery of the fixing groove 32.

[0030] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, the two ends of the binding strap 5 are respectively provided with a first plug 54 and a first buckle 55 that match each other. After the first plug 54 and the first buckle 55 are fastened together, the binding strap 5 is wrapped around the outer periphery of the three-way pipe 2, thereby fixing the binding strap 5 to the three-way pipe 2.

[0031] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, the binding strap 5 is provided with two matching ring straps 51 in the middle, and the free ends of the two ring straps 51 are respectively provided with matching second plugs 52 and second buckles 53. After the two ring straps 51 are fastened to the second plugs 52 and second buckles 53, they are wrapped around the outer periphery of the riser 1, thereby strengthening the connection between the tee pipe 2 and the riser 1.

[0032] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, a branch pipe 31 is provided and connected to the lower outer periphery of the spray gun rod 3. The free end of the branch pipe 31 is connected to the first slurry delivery pipe 41 through the first quick connector 42. This arrangement facilitates the installation and disassembly of the first slurry delivery pipe 41 and the branch pipe 31.

[0033] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, the second slurry delivery pipe 81 and the horizontal pipe 22 are connected by a second quick connector 82. This arrangement facilitates the installation and disassembly of the second slurry delivery pipe 81 and the horizontal pipe 22.

[0034] In one specific embodiment, in the spraying device for the coke oven brick gas duct of the present invention, the top of the filter barrel 8 is covered with a cover plate, and multiple layers of filter plates are arranged inside. A through hole is opened in the center of the cover plate, and the end of the second slurry conveying pipe 81 is inserted into the through hole. Excess slurry can be effectively recovered through the filter plates.

[0035] The installation process of the spraying and patching device for the coke oven brick gas duct of the present invention is as follows:

[0036] First, the T-connector 2 is fixed to the bottom of the riser 1 using the strap 5. Specifically, the strap 5 is wrapped around the outside of the T-connector 2 and secured by the engagement of the first plug 54 and the first buckle 55. Then, two loop straps 51 are wrapped around the outside of the riser 1 and further secured by the engagement of the second plug 52 and the second buckle 53. Next, the spray gun rod 3 is fixed to a preset position inside the riser 1 using the spray gun fixing sleeve 57, that is, the spray gun fixing sleeve 57 is fitted around the fixing groove 32 of the spray gun rod 3, and the bottom of the spray gun rod 3 is movably connected. Connect the device to the bracket 6 and ensure that the horizontal position of the sealing sleeve 7 is level with the bottom horizontal position of the side wall of the horizontal pipe 22. Connect the end of the first grout delivery pipe 41 connected to the shotcrete machine 4 to the end of the branch pipe 31 through the first quick connector 42. Connect the end of the second grout delivery pipe 81 connected to the filter bucket 8 to the end of the horizontal pipe 22 through the second quick connector 82. Finally, insert the conical expansion plug 9 into the bottom of the vertical pipe 21 and inflate the conical expansion plug 9 through the air inlet / outlet connector 92 to make it expand, thus completing the installation of this device.

[0037] The working principle of the spraying and patching device for the coke oven brick gas duct of the present invention is as follows:

[0038] Start the shotcrete machine 4. The slurry flows from the shotcrete machine 4 through the first slurry delivery pipe 41 and the branch pipe 31 and then into the spray gun rod 3. The operator controls and adjusts the spray range of the spray gun rod 3 to perform shotcrete operation on the inner wall of the brick gas duct 100. During the operation, the excess slurry generated flows along the wall of the riser 1 to the wall of the vertical pipe 21, and then flows to the top of the sealing sleeve 7. Due to the sealing effect and position of the sealing sleeve 7, the slurry will flow from the top of the sealing sleeve 7 into the horizontal pipe 22, and then flow through the second slurry delivery pipe 81 and into the filter tank 8. After being filtered by multiple layers of filter plates, it is recycled. The conical expansion plug 9 at the bottom of the vertical pipe 21 can effectively prevent the slurry from leaking from the bottom of the vertical pipe 21, ensuring the cleanliness of the working environment.

[0039] In summary, compared with the prior art, the injection and repair device for the coke oven brick gas duct of the present invention has the following advantages and positive effects:

[0040] (1) The present invention supports the spray gun rod 3 by means of the bracket 6 and the strap 5, which reduces the time and intensity of the operator to manually fix the spray gun, reduces the fatigue of the operator, and thus improves the work efficiency and quality. By matching the horizontal position of the sealing sleeve 7 with the horizontal position of the bottom wall of the horizontal pipe 22, it can effectively prevent the slurry from flowing down to the bottom of the three-way pipe 2 where the spray gun extends, thus avoiding the problem of slurry waste and splashing onto the operator, improving the working environment and protecting the health of the operator.

[0041] (2) By setting up a filter assembly, the present invention allows excess slurry to flow into the filter tank 8 through the second slurry conveying pipe 81 via the horizontal pipe 22 of the three-way pipe 2 for filtration and recycling, preventing excess slurry from entering the horizontal pipe and causing blockage, ensuring the normal operation of the heating system, realizing resource recycling, reducing environmental pollution, and reducing cleaning difficulty and cost. In addition, a conical expansion plug 9 is set at the bottom of the vertical pipe 21, which can be expanded and contracted by filling and releasing air through the air filling and releasing joint 92, effectively sealing the bottom of the vertical pipe 21 and preventing slurry from leaking from the bottom of the vertical pipe 21.

[0042] It should be noted that, unless otherwise expressly specified and limited, the term "connection" or its synonyms should be interpreted broadly in this document. For example, "connection" can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Furthermore, expressions such as "first" and "second" are merely used to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Meanwhile, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In addition, the terms "front," "rear," "left," "right," "upper," and "lower" in this document refer to the placement states shown in the accompanying drawings.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spraying device for a coke oven brick gas duct, wherein the spraying device is disposed between the brick gas duct and a horizontal pipe, and a vertical pipe is connected to the bottom of the brick gas duct, characterized in that, The spraying device includes a spraying assembly connected to the inside of the riser, a tee pipe disposed outside the riser, a filter assembly connected to the tee pipe, and a bracket disposed above the horizontal pipe. The spraying assembly includes a spraying machine, a spray gun rod disposed inside the riser, and a first grout delivery pipe connecting the spraying machine and the spray gun rod. The bottom end of the spray gun rod is movably connected to the bracket. The tee pipe includes a vertical pipe and a horizontal pipe that are connected to each other and arranged perpendicularly to each other. The bottom end of the riser is inserted into the vertical pipe. A sealing sleeve is provided between the spray gun rod and the vertical pipe. The horizontal position of the sealing sleeve matches the horizontal position of the bottom wall of the horizontal pipe. The filter assembly includes a filter bucket and a second grout delivery pipe connecting the filter bucket and the horizontal pipe.

2. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, The outer periphery of the sealing sleeve is sealed to the inner wall of the vertical pipe by a sealing ring, and the inner wall of the sealing sleeve is sealed to the outer periphery of the spray gun rod by the sealing ring.

3. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, The bottom end of the vertical pipe is provided with a conical expansion plug. One end of the conical expansion plug is connected to an inflation / deflation connector via a pull rope in the air guide tube. Multiple anti-detachment rings are provided on the circumference of the conical expansion plug.

4. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, A suspension assembly is provided between the tee pipe and the riser pipe. The suspension assembly includes a strap wrapped around the outer periphery of the tee pipe, a spray gun fixing sleeve provided on the strap, and an adjuster provided on the strap.

5. The spraying and patching device for the coke oven brick gas duct according to claim 4, characterized in that, A fixing groove is provided on the outer periphery of the bottom end of the spray gun rod, and the spray gun fixing sleeve is fitted on the outer periphery of the fixing groove.

6. The spraying and patching device for the coke oven brick gas duct according to claim 4, characterized in that, The strap is provided with a first plug and a first buckle that match each other at both ends. After the first plug and the first buckle are fastened, the strap is wrapped around the outer periphery of the three-way tube.

7. The spraying and patching device for the coke oven brick gas duct according to claim 4, characterized in that, The binding strap has two matching loops in the middle. The free ends of the two loops are respectively provided with matching second plugs and second buckles. After the second plugs and second buckles are fastened, the two loops are wrapped around the outer periphery of the riser.

8. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, A branch pipe is provided on the lower outer periphery of the spray gun rod, and the free end of the branch pipe is connected to the first slurry delivery pipe through a first quick connector.

9. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, The second slurry delivery pipe is connected to the horizontal pipe via a second quick connector.

10. The spraying and patching device for the coke oven brick gas duct according to claim 1, characterized in that, The top of the filter barrel is covered with a cover plate, and multiple filter plates are installed inside. A through hole is opened in the center of the cover plate, and the end of the second slurry conveying pipe is inserted into the through hole.

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