Air exhaust mechanism and sintering device

Abstract

The utility model belongs to the technical field of sintering machines, and discloses an air exhaust mechanism and a sintering device, and the air exhaust mechanism comprises an air exhaust assembly, a connecting pipe and a protective part. The air suction assembly comprises an air suction pump and an air inlet pipe, the air inlet end of the air suction pump communicates with the air outlet end of the sintering machine through the air inlet pipe, one end of the connecting pipe communicates with the output end of the air suction pump, and the other end of the connecting pipe communicates with a flue of the sintering machine. The multiple protection parts are sequentially laid on the inner wall of the connecting pipe to form a protection barrel, the outer circumferential wall of the protection barrel abuts against the inner circumferential wall of the connecting pipe, a containing channel is formed in the protection barrel, and the two ends of the containing channel communicate with the flue and the output end of the air extracting pump correspondingly. The sintering device comprises the air exhaust mechanism. Through the arrangement, the air exhaust mechanism can prolong the service life of the connecting pipe, cost is reduced, efficiency is improved, and the sintering device can improve safety and prolong the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machines, in particular to an air extraction mechanism and a sintering device. Background Art

[0002] Sintering machine is suitable for sintering operation in large-scale ferrous metallurgical sintering plants, mainly for sintering treatment of iron ore powder in large and medium-sized sintering plants. It is the main equipment in the exhaust sintering process, which can sinter concentrate powder and rich ore powder of different components and different particle sizes into blocks, and partially eliminate harmful impurities such as sulfur and phosphorus contained in the ore. Sintering machine is divided into several specifications of different lengths and widths according to the sintering area, and users can choose according to their output or site conditions. The larger the sintering area, the higher the output.

[0003] In the process of ore sintering, iron powder ore is generally transported to the distributor by a belt, and then placed on the trolley by the distributor. The trolley passes through the ignition furnace above the trolley at a uniform speed via the conveyor. The ignition furnace ignites through the ignition device when the trolley passes by, and sprays fire downward to burn the iron ore to sinter it. However, due to the large amount of leakage below the ignition device and severe smoke corrosion, the service life of the bellows and exhaust pipes is short, the air leakage rate increases, and the main exhaust current increases. In order to avoid serious air leakage, operators often use glass water to block the leaking parts. Since the bellows and various pipelines need to be replaced or repaired frequently, the labor intensity of the workers is high and the maintenance cost is high. Utility Model Content

[0004] The utility model aims to provide an air extraction mechanism, which can prolong the service life of the connecting pipe, reduce costs and increase efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A suction mechanism, comprising:

[0007] The air extraction component comprises an air extraction pump and an air inlet pipe, wherein the air inlet end of the air extraction pump is connected to the air outlet end of the sintering machine through the air inlet pipe;

[0008] A connecting pipe, one end of which is connected to the output end of the vacuum pump, and the other end of which is connected to the flue of the sintering machine;

[0009] A plurality of protective parts are sequentially laid on the inner wall of the connecting pipe to form a protective cylinder, the outer peripheral wall of the protective cylinder abuts against the inner peripheral wall of the connecting pipe, and a accommodating channel is arranged in the protective cylinder, and the two ends of the accommodating channel are respectively connected to the flue and the output end of the vacuum pump.

[0010] Optionally, the air extraction assembly further includes a filter element, and the filter element is disposed on the air inlet pipe.

[0011] Optionally, the diameter of the air inlet pipe gradually increases in a direction away from the air pump.

[0012] Optionally, the air extraction mechanism further includes a tortoise shell net, and the tortoise shell net is arranged on the air extraction pump.

[0013] Optionally, a heat-resistant layer is sprayed on the tortoise shell mesh.

[0014] Optionally, the thickness of the heat-resistant layer is 30 to 50 mm.

[0015] Optionally, the connecting pipe is made of carbon steel.

[0016] Optionally, the protective element is a ceramic sheet.

[0017] Optionally, the thickness of the ceramic sheet is 10 to 20 mm.

[0018] The utility model aims to provide a sintering device which can improve safety and service life.

[0019] To achieve this purpose, the utility model adopts the following technical solutions:

[0020] A sintering device comprises a machine body and the above-mentioned exhaust mechanism, wherein the machine body is used for sintering mineral powder, and the exhaust mechanism is arranged on the machine body.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides an exhaust mechanism, which includes an exhaust assembly, a connecting pipe and a protective member. The exhaust assembly includes an exhaust pump and an air inlet pipe, and the air inlet end of the exhaust pump is connected to the air outlet end of the sintering machine through the air inlet pipe, so as to ensure that the exhaust gas generated by the sintering machine can smoothly enter the exhaust pump. One end of the connecting pipe is connected to the output end of the exhaust pump, and the other end is used to connect to the flue of the sintering machine, so as to ensure that the gas output from the exhaust pump can be smoothly guided to the flue. A plurality of protective members are provided, and the plurality of protective members are sequentially laid on the inner wall of the connecting pipe to form a protective cylinder body, so that the operating personnel can install the protective members one by one. The outer peripheral wall of the protective cylinder body abuts against the inner peripheral wall of the connecting pipe to ensure that there is no gap between the protective cylinder body and the connecting pipe, so as to prevent the exhaust gas from corroding the connecting pipe through the gap, prolong the service life of the connecting pipe, and avoid leakage. The protective cylinder is provided with a receiving channel, and the two ends of the receiving channel are respectively connected to the flue and the output end of the vacuum pump, so that the exhaust gas can be smoothly discharged into the flue through the receiving channel after being pumped by the vacuum pump, ensuring the fluidity of the gas. Through the above arrangement, the vacuum mechanism of the present application can extend the service life of the connecting pipe, reduce costs and increase efficiency.

[0023] The utility model also provides a sintering device, which includes a body and the above-mentioned exhaust mechanism, the body is used to sinter the ore powder, and the exhaust mechanism is arranged on the body, which effectively prevents the inner wall of the connecting pipe from being damaged due to long-term contact with high temperature and corrosive gas, thereby reducing the risk of safety accidents. Through the above-mentioned arrangement, the sintering device of the present application can improve safety and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the air extraction mechanism provided in the embodiment of the utility model;

[0025] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0026] In the figure:

[0027] 100. Sintering machine; 101. Flue; 1. Exhaust assembly; 11. Exhaust pump; 12. Air inlet pipe; 2. Connecting pipe; 3. Protective element; 31. Protective cylinder; 311. Accommodating channel. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0029] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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 connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0032] like Figure 1 and Figure 2 As shown, this embodiment provides an air extraction mechanism, which includes an air extraction component 1, a connecting pipe 2 and a protective member 3. The air extraction component 1 includes an air extraction pump 11 and an air inlet pipe 12. The air inlet end of the air extraction pump 11 is connected to the air outlet end of the sintering machine 100 through the air inlet pipe 12. One end of the connecting pipe 2 is connected to the output end of the air extraction pump 11, and the other end is used to connect to the flue 101 of the sintering machine 100. There are multiple protective members 3, and the multiple protective members 3 are sequentially laid on the inner wall of the connecting pipe 2 to form a protective cylinder 31. The outer peripheral wall of the protective cylinder 31 abuts against the inner peripheral wall of the connecting pipe 2. A accommodating channel 311 is provided in the protective cylinder 31. The two ends of the accommodating channel 311 are respectively connected to the flue 101 and the output end of the air extraction pump 11.

[0033] In this embodiment, the air extraction mechanism includes an air extraction component 1, a connecting pipe 2 and a protective member 3. The air extraction component 1 includes an air extraction pump 11 and an air inlet pipe 12. The air inlet end of the air extraction pump 11 is connected to the air outlet end of the sintering machine 100 through the air inlet pipe 12, so as to ensure that the exhaust gas generated by the sintering machine 100 can smoothly enter the air extraction pump 11. One end of the connecting pipe 2 is connected to the output end of the air extraction pump 11, and the other end is used to connect the flue 101 of the sintering machine 100, so as to ensure that the gas output from the air extraction pump 11 can be smoothly guided to the flue 101. There are multiple protective members 3, and the multiple protective members 3 are sequentially laid on the inner wall of the connecting pipe 2 to form a protective cylinder 31, so that the operator can install the protective members 3 one by one. The outer peripheral wall of the protective cylinder 31 abuts against the inner peripheral wall of the connecting pipe 2 to ensure that there is no gap between the protective cylinder 31 and the connecting pipe 2, so as to prevent the exhaust gas from eroding the connecting pipe 2 through the gap, prolong the service life of the connecting pipe 2, and avoid leakage. The protective cylinder 31 is provided with a receiving channel 311, and the two ends of the receiving channel 311 are respectively connected to the flue 101 and the output end of the air pump 11, so that the exhaust gas can be smoothly discharged into the flue 101 through the receiving channel 311 after being pumped by the air pump 11, thereby ensuring the fluidity of the gas. Through the above arrangement, the air extraction mechanism of this embodiment can extend the service life of the connecting pipe 2, reduce costs and increase efficiency.

[0034] It should be noted that the vacuum pump 11 can be a mechanical pump, a centrifugal pump or other equipment, and the technicians in this field are familiar with its specific working principle, which will not be described in detail here. In addition, the gas outlet of the sintering machine 100 is the port for exhausting gas after iron ore sintering, which is used to treat and discharge waste gas, which will not be described in detail here.

[0035] Specifically, Figure 1 and Figure 2 As shown, the air extraction assembly 1 further includes a filter element, which is disposed on the air inlet pipe 12, so that the gas passing through the air outlet of the sintering machine 100 can first be filtered by the filter element, and then enter the air extraction pump 11 through the air inlet pipe 12. The filter element filters impurities and pollutants (such as dust, particulate matter, etc.), which helps to protect the internal structure of the air extraction pump 11 and prevent it from being worn or damaged. More specifically, the filter element can be a filter mesh or a filter element, and its specific structure is not limited.

[0036] Specifically, Figure 1 and Figure 2 As shown, the diameter of the air inlet pipe 12 gradually increases in the direction away from the air pump 11, thereby reducing the resistance of the gas when flowing in the air inlet pipe 12 and improving the smoothness and efficiency of the gas flow.

[0037] Specifically, Figure 1 and Figure 2 As shown, the air extraction mechanism also includes a tortoise shell net, which is arranged on the air pump 11, thereby enhancing the wear resistance and corrosion resistance of the air pump 11, preventing particulate matter or corrosive substances in the exhaust gas from directly contacting the surface of the air pump 11, thereby extending the service life of the air pump 11, helping to reduce the frequency of repairing and replacing the air pump 11, and reducing maintenance costs. In this embodiment, the tortoise shell net is arranged on the outer peripheral wall of the air pump 11 by welding to ensure the protective effect. In other embodiments, the tortoise shell net can also be arranged by screw connection or the like, which is not limited too much here.

[0038] More specifically, a heat-resistant layer is sprayed on the tortoise shell mesh, which can further improve the high temperature resistance of the tortoise shell mesh and ensure its stability and durability under extreme temperatures. The heat-resistant layer can be a ceramic coating or a high-temperature alloy coating, which is not limited here.

[0039] More specifically, the thickness of the heat-resistant layer is 30 to 50 mm, which can ensure that the tortoise shell net can still maintain excellent performance and a long service life at high temperatures.

[0040] Specifically, the connecting pipe 2 is made of carbon steel, which has stable performance and high cost performance, and can meet the requirements that the connecting pipe 2 needs to have good high temperature resistance and corrosion resistance.

[0041] Specifically, in this embodiment, the protective member 3 is a ceramic sheet, and multiple ceramic sheets are sequentially laid and pasted on the inner wall of the connecting pipe 2 to improve the wear resistance and corrosion resistance of the connecting pipe 2. Since the ceramic material has an extremely high melting point, it can maintain a stable structure at extremely high temperatures without softening or melting. Moreover, the ceramic material has excellent corrosion resistance to most acids, alkalis, salts and other chemical substances, and can maintain its stability and reliability even in harsh chemical environments, thereby ensuring the normal use of the connecting pipe 2 in a high temperature environment and improving its service life. In other embodiments, the protective member 3 can be made of materials such as titanium alloy, as long as it can achieve the above-mentioned functions, and no excessive restrictions are made here.

[0042] More specifically, the thickness of the ceramic sheet is 10 to 20 mm, which can prevent particulate matter, corrosive substances or high-temperature gases in the exhaust gas from directly contacting the surface of the inner wall of the connecting pipe 2, thereby extending the service life of the connecting pipe 2 and reducing maintenance costs.

[0043] This embodiment also provides a sintering device, including a machine body and the above-mentioned exhaust mechanism, the machine body is used to sinter mineral powder, and the exhaust mechanism is arranged on the machine body, which effectively prevents the inner wall of the connecting pipe 2 from being damaged due to long-term contact with high temperature and corrosive gas, thereby reducing the risk of safety accidents. Through the above-mentioned arrangement, the sintering device of this embodiment can improve safety and service life.

[0044] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. The air extraction mechanism is characterized in that: include: An air extraction component (1) comprises an air extraction pump (11) and an air inlet pipe (12), wherein the air inlet end of the air extraction pump (11) is connected to the air outlet end of the sintering machine (100) through the air inlet pipe (12); A connecting pipe (2), one end of which is connected to the output end of the vacuum pump (11), and the other end of which is used to connect to the flue (101) of the sintering machine (100); A plurality of protective members (3) are sequentially laid on the inner wall of the connecting pipe (2) to form a protective cylinder (31). The outer peripheral wall of the protective cylinder (31) abuts against the inner peripheral wall of the connecting pipe (2). A receiving channel (311) is provided in the protective cylinder (31). The two ends of the receiving channel (311) are respectively connected to the flue (101) and the output end of the vacuum pump (11).

2. The air extraction mechanism according to claim 1, characterized in that: The air extraction component (1) further comprises a filter element, wherein the filter element is arranged on the air inlet pipe (12).

3. The air extraction mechanism according to claim 1, characterized in that: The diameter of the air inlet pipe (12) gradually increases in a direction away from the air pump (11).

4. The air extraction mechanism according to claim 1, characterized in that: The air extraction mechanism further comprises a tortoise shell net, and the tortoise shell net is arranged on the air extraction pump (11).

5. The air extraction mechanism according to claim 4, characterized in that: A heat-resistant layer is sprayed on the tortoise shell net.

6. The air extraction mechanism according to claim 5, characterized in that: The thickness of the heat-resistant layer is 30 to 50 mm.

7. The air extraction mechanism according to claim 1, characterized in that: The connecting pipe (2) is made of carbon steel.

8. The air extraction mechanism according to claim 1, characterized in that: The protective element (3) is a ceramic sheet.

9. The air extraction mechanism according to claim 8, characterized in that: The thickness of the ceramic sheet is 10 to 20 mm.

10. A sintering device, characterized in that: It comprises a machine body and the exhaust mechanism according to any one of claims 1 to 9, wherein the machine body is used for sintering mineral powder, and the exhaust mechanism is arranged on the machine body.

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