Coke oven brick gas passage multi-head guniting device

Abstract

The utility model provides a multi-head guniting device for a coke oven brick gas passage. The multi-head guniting device comprises a multi-head guniting device and a guniting machine, the multi-head guniting device comprises sprayers and a steel pipe; the guniting machine comprises a guniting machine and an air pump; the pulp shooting machine is communicated with a pulp supply pipeline and is used for outputting pulp of the pulp shooting machine into a spray head of the multi-head pulp shooting device to realize multi-flame-path pulp shooting operation. According to the multi-head guniting device, in the one-time guniting process, guniting of the brick coal gas channel can be efficiently completed, and the working efficiency is greatly improved; the multi-head guniting device can reasonably distribute the guniting amount of a plurality of flame paths, so that the backflow of the guniting amount is reduced, and the adhesion degree of the guniting at the blow-by part of the blow-by brick gas path is greatly increased; materials used by the multi-head guniting device are easy to manufacture, and installation and operation are convenient. And the environmental requirements of temperature and pressure of a coke oven guniting place are met.

Description

Technical Field

[0001] This utility model relates to the field of coke oven maintenance, and in particular to a multi-head spraying device for coke oven brick gas duct. Background Technology

[0002] During coke oven production, due to aging and expansion of the oven body, as well as temperature fluctuations in the regenerator, slurry may fall out of the oven, and misalignment and cracks may appear in the upper and lower brick layers. If this phenomenon occurs in the brick gas duct, it will cause gas leakage, affecting the gas supply to each brick gas duct. This will cause some of the rising gas to enter the regenerator for combustion, significantly disrupting the normal pressure regime. In severe cases, it can cause the checker bricks to burn out and collapse, increase the resistance of the regenerator, cause abnormal temperatures, and even lead to high-temperature accidents. This makes it difficult to push coke, disrupts the stability of production, increases the difficulty of thermal management, and damages the oven body.

[0003] When a leak occurs in a brick gas duct, it needs to be repaired with shotcrete. The existing method involves repairing each gas duct individually, using a shotcrete machine to connect a single pipe to the gas nozzle. This single-hole repair method has the following problems:

[0004] 1. The shotcrete process is inefficient and requires frequent operation. Problematic brick gas ducts need to be addressed one by one, and equipment needs to be moved frequently.

[0005] 2. The single-head shotcrete method cannot effectively balance the pressure of the shotcrete machine during operation, resulting in a low slurry adhesion rate under the same concentration. Utility Model Content

[0006] This utility model provides a multi-head spraying device for coke oven brick gas ducts, which solves the problem that existing spraying methods cannot effectively balance the pressure of the spraying machine during operation, resulting in low slurry adhesion rate and low efficiency under the same concentration.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A multi-head shotcrete device for coke oven brick gas ducts includes a multi-head shotcrete device and a shotcrete device;

[0009] The multi-head shotcrete device includes nozzles and steel pipes;

[0010] The shotcrete device includes a shotcrete machine and an air pump;

[0011] The shotcrete machine is connected to a slurry supply pipe, which is used to output the slurry from the shotcrete machine to the nozzle of the multi-head shotcrete device to realize multi-channel shotcrete operation.

[0012] Furthermore, the air outlet of the air pump is connected to the air supply pipe assembly, and the air outlet of the air supply pipe assembly is connected to the air port of the mixing device inside the shotcrete machine through the gas output pipe. The mixing device rotates under the action of the air pump, so that the slurry in the shotcrete machine is output to the multi-head shotcrete device along the slurry supply pipe.

[0013] Furthermore, the slurry outlet of the shotcrete machine is connected to a slurry supply pipe, which is connected to a steel pipe via a quick connector.

[0014] Furthermore, the steel pipe is a T-shaped steel pipe formed by welding a first steel pipe and a second steel pipe, with the first steel pipe and the second steel pipe communicating with each other; the lower end of the first steel pipe is connected to the slurry supply pipe, and the second steel pipe is connected to and communicates with several nozzles.

[0015] Furthermore, the nozzles are connected to hoses via quick connectors, and the hoses are connected to the brick gas duct via quick connections.

[0016] Furthermore, the shotcrete mechanism also includes a movable push-handle trolley, on which the shotcrete machine is placed.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model's multi-head shotcrete device can efficiently complete the shotcrete application of brick gas ducts in a single shotcrete process, greatly improving work efficiency. The multi-head shotcrete device can rationally distribute the shotcrete volume across multiple fire channels, reducing slurry backflow and significantly increasing the adhesion of the slurry at leakage points in the brick gas ducts. The multi-head shotcrete device is simple to manufacture and easy to install and operate. It meets the environmental requirements for temperature and pressure in coke oven shotcrete application sites. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0021] Explanation of icon numbers:

[0022] 1. Shotcrete machine; 2. Shotcrete supply pipe; 31. First steel pipe; 32. Second steel pipe; 4. Nozzle; 5. Quick connector; 6. Hose; 7. Brick gas duct. Detailed Implementation

[0023] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0027] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0028] This utility model provides a technical solution: a multi-head spraying device for the gas duct of a coke oven brick, such as... Figure 1As shown, it consists of a multi-head shotcrete device and a shotcrete machine. The multi-head shotcrete device includes components such as quick connectors 5, hoses 6, and steel pipes for easy connection and installation; the shotcrete machine includes a movable push-handle trolley, a shotcrete machine 1, and an air pump. The shotcrete machine 1 is connected to the slurry supply pipe 2, outputting the slurry from the slurry supply pipe 2 to the nozzles 4 of the multi-head shotcrete device, thereby realizing multi-channel shotcrete operation.

[0029] The slurry outlet of the shotcrete machine 1 is connected to the slurry supply pipe 2, and the slurry supply pipe 2 is connected to the steel pipe through the quick connector 5.

[0030] The steel pipe is a T-shaped steel pipe formed by welding the first steel pipe 31 and the second steel pipe 32. The first steel pipe 31 and the second steel pipe 32 are connected. The lower end of the first steel pipe 31 is connected to the slurry supply pipe 2, and the second steel pipe 32 is connected to and communicates with several nozzles 4.

[0031] The nozzle 4 is connected to the hose 6 via quick connector 5, and the hose 6 is connected to the brick gas duct 7 via quick connection.

[0032] The shotcrete machine 1 is placed on a movable push-handle trolley.

[0033] The slurry placed in the shotcrete machine 1 is mixed according to the ratio; the air pump is connected to the air supply pipe group, and the air outlet of the air supply pipe group is connected to the air port of the stirring device in the shotcrete machine 1 (1) through the gas output pipe. The stirring device rotates under the action of the air pump, so that the slurry in the shotcrete machine 1 is output to the multi-head shotcrete device along the slurry supply pipe 2, thereby entering the porous brick coal gas channel.

[0034] The multi-head shotcrete device is easy to disassemble and install, requiring minimal investment. It is safe, efficient, and easy to operate when used with shotcrete machine 1. The newly provided coke oven shotcrete machine 1 is convenient to use and highly compatible.

[0035] The working principle is as follows: after preparation, grouting begins into the grout supply pipe 2. The gap between the grout supply pipe 2 and the grouting pipe is sealed with special sealing material. The valve of the shotcrete machine 1 is opened, and the inspectors at the top of the furnace are notified to check the treated brick gas duct. A multi-head shotcrete device is used to perform shotcrete operations on multiple fire ducts. The grout pressure is strictly controlled according to the pressure during the test spray.

[0036] After the slurry enters the brick gas duct, pause for 3-5 seconds, then depressurize and return. Repeat this process once or twice after a few minutes (3-5 minutes) to remove excess slurry before proceeding to the next round of multi-channel slurry spraying. After the multi-channel slurry spraying is completed, clean the duct with threaded steel to ensure there is no slurry blockage. Remove the filler from the sealing orifice plate, open the plug, and begin gas supply. After gas supply, assess the effectiveness of the multi-channel slurry spraying based on the combustion of gas in brick gas duct 7.

[0037] The operating method of this utility model:

[0038] 1. Prepare the grout. Select a grout of the same material as the refractory material used in the brick gas duct. Because the material is the same, it can be quickly incorporated into the leaking gaps and solidify, thereby sealing the leaking parts of the brick gas duct.

[0039] 2. Check whether the shotcrete machine 1 is running normally and whether the air pump is working properly, and whether the shotcrete machine 1 and the multi-head shotcrete device are connected.

[0040] 3. After exchanging gas for 5 minutes in the coke oven heating system's heat exchange equipment, close the gas cock, open the four-way bottom cover and side cover, and use filler to seal the front orifice plate of the brick gas inlet. Stabilize the operation of the shotcrete machine 1 to achieve precise operation.

[0041] 4. Check for gas leakage in the porous brick gas duct, then use an iron probe to determine the size of the gap, prepare the grout material for gas leakage in the porous brick, and adjust it to a thin or thick state.

[0042] 5. Use compressed air provided by the coke oven site to connect the straight pipe of the brick coal gas duct. Clean the dust and debris inside the brick coal gas duct to ensure better bonding between the slurry and any leaks in the brick coal gas duct.

[0043] 6. Connect shotcrete machine 1 and multi-head shotcrete device to coke oven gas branch pipe. Adjust the consistency of shotcrete according to shotcrete pressure, shotcrete time, furnace temperature, and the effect of shotcrete coating.

[0044] 7. The shotcrete operation should be carried out slowly, and the shotcrete effect should be observed through the top observation hole. After stopping the shotcrete operation, wait for 8-15 seconds, then disconnect the branch pipe connection thread to allow the remaining shotcrete material to flow back into the prepared container.

[0045] 8. After the grouting is completed, use a drill made of threaded steel to clear any blockages and remove excess material. After cleaning, apply oil to the pipe plugs and threaded plugs before installation. Once the grouting is complete, connect all pipelines and open the gas valve to resume normal heating.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-head spraying device for coke oven brick gas ducts, characterized in that, Including multi-head shotcrete devices and shotcrete machines; The multi-head shotcrete device includes a nozzle (4) and a steel pipe; The shotcrete machine includes a shotcrete machine (1) and an air pump; The shotcrete machine (1) is connected to the slurry supply pipe (2) and is used to output the slurry of the shotcrete machine (1) to the nozzle (4) of the multi-head shotcrete device to realize the multi-channel shotcrete operation.

2. The multi-head spraying device for coke oven brick gas ducts according to claim 1, characterized in that, The air outlet of the air pump is connected to the air supply pipe group. The air outlet of the air supply pipe group is connected to the air port of the stirring device in the shotcrete machine (1) through the gas output pipe. The stirring device rotates under the action of the air pump, so that the slurry in the shotcrete machine (1) is output to the multi-head shotcrete device along the slurry supply pipe (2).

3. The multi-head spraying device for coke oven brick gas ducts according to claim 1, characterized in that, The slurry outlet of the shotcrete machine (1) is connected to the slurry supply pipe (2), and the slurry supply pipe (2) is connected to the steel pipe through a quick connector (5).

4. The multi-head spraying device for coke oven brick gas ducts according to claim 1, characterized in that, The steel pipe is a T-shaped steel pipe formed by welding a first steel pipe (31) and a second steel pipe (32). The first steel pipe (31) and the second steel pipe (32) are connected. The lower end of the first steel pipe (31) is connected to the slurry supply pipe (2), and the second steel pipe (32) is connected to and communicates with several nozzles (4).

5. The multi-head spraying device for coke oven brick gas ducts according to claim 4, characterized in that, The nozzle (4) is connected to the hose (6) via a quick connector (5), and the hose (6) is connected to the brick gas duct (7) via a quick connection.

6. The multi-head spraying device for coke oven brick gas ducts according to claim 1, characterized in that, The shotcrete mechanism also includes a movable push-handle trolley, on which the shotcrete machine (1) is placed.

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