Sintering machine

Abstract

The utility model relates to the technical field of dust removal of sintering machines, and provides a sintering machine which comprises a sintering chamber and a treatment box, a smoke exhaust pipeline is vertically arranged at the top of the sintering chamber, the treatment box is arranged on the upper side of the sintering chamber, the upper end of the smoke exhaust pipeline extends into the treatment box, and an air outlet is formed in the upper end of the treatment box; the air outlet pipe is transversely arranged and communicates with the upper end of the smoke exhaust pipeline, and a plurality of air outlet holes are formed in the lower side of the air outlet pipe and point to the lower end in the treatment box; the water mist spray head is arranged in the treatment box, is positioned above the air outlet pipe and is used for spraying water mist to the lower side; the at least one water condensation net is arranged in the treatment box, is positioned above the water mist spray head and is used for condensing the water vapor; and the fan is arranged in the air outlet and is used for exhausting air outwards. According to the technical scheme, the problems that in the prior art, heat in flue gas cannot be fully recycled, more water resources are wasted, and the dust removal effect is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering machine dust removal, in particular to a sintering machine. Background Art

[0002] The sintering machine is suitable for the sintering treatment of iron ore powder, which is convenient for the product to leave the factory. The sintering machine is not a single machine, but a project composed of multiple processes.

[0003] The patent document of "An energy-saving sintering machine for steel" with the authorization announcement number of CN 215909676 U discloses that a water tank, a water mist nozzle and a collection hood are arranged on the upper side of the sintering chamber, which can partially recover the heat in the high-temperature flue gas and conduct preliminary dust removal treatment on the flue gas. However, when the water mist nozzle conducts dust removal treatment on the flue gas discharged from the smoke exhaust pipe in an open environment, the dust removal effect is poor. This preliminary dust removal treatment does not have obvious significance for reducing the workload of the subsequent dust collector. At the same time, when the high-temperature flue gas contacts the water mist, the water mist quickly vaporizes and evaporates, the dust removal effect is reduced, a large amount of water resources are vaporized and wasted, and the flue gas waste heat recovery is insufficient.

[0004] The prior art cannot fully recover the heat in the flue gas, wastes more water resources, has a poor dust removal effect, and basically cannot reduce the subsequent dust removal work intensity of the dust collector. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a sintering machine aiming at the above-mentioned technical deficiencies, which solves the problems in the prior art that the heat in the flue gas cannot be fully recovered, more water resources are wasted, and the dust removal effect is poor.

[0006] The technical solution adopted by the utility model is: to provide a sintering machine, including: a sintering chamber, a smoke exhaust pipe is arranged at the top of the sintering chamber, the smoke exhaust pipe is arranged vertically, and it is characterized in that it further includes:

[0007] A treatment box is arranged on the upper side of the sintering chamber, the upper end of the smoke exhaust pipe extends into the treatment box, and the upper end of the treatment box has an air outlet;

[0008] An air outlet pipe is arranged horizontally, the air outlet pipe is communicated with the upper end of the smoke exhaust pipe, and a plurality of air outlet holes are arranged on the lower side of the air outlet pipe, and the air outlet holes point to the lower end inside the treatment box;

[0009] A water mist nozzle is arranged inside the treatment box and above the air outlet pipe for spraying water mist downward;

[0010] At least one water condensation net is arranged inside the treatment box and above the water mist nozzle for condensing water vapor;

[0011] A fan, which is arranged inside the air outlet and is used for exhausting air outwards.

[0012] To further optimize this technical solution, it further includes:

[0013] A hot water suction pipe, which has a water inlet pipe and a water outlet pipe. There are several such hot water suction pipes, and the several hot water suction pipes are spaced apart in the vertical direction. Two adjacent hot water suction pipes are connected in an up-and-down manner through the water inlet pipe and the water outlet pipe. The water condensation net is lapped on the hot water suction pipe and is in thermal conduction contact with the hot water suction pipe. The water outlet pipe of the lower hot water suction pipe is communicated with the water mist nozzle;

[0014] A water supply pipe, which is arranged above the processing box, and the water supply pipe is communicated with the water inlet pipe of the upper hot water suction pipe.

[0015] To further optimize this technical solution, the hot water suction pipe is annular; the water condensation net includes a first net body and a second net body. The first net body is circular, the first net body is lapped on the hot water suction pipe and is located inside the hot water suction pipe, the second net body is circular ring-shaped, and the second net body is lapped on the hot water suction pipe and is located between the hot water suction pipe and the inner wall of the processing box.

[0016] To further optimize this technical solution, the second net body includes two symmetrically arranged semi-ring net bodies. The two semi-ring net bodies are connected by plugging to form the second net body. The inner side of the semi-ring net body has a lapping part, the vertical section of the lapping part is arc-shaped, the lapping part is lapped on the upper side of the outer wall of the hot water suction pipe, and the outer side wall of the semi-ring net body is in contact with the inner wall of the processing box.

[0017] To further optimize this technical solution, the lower part of the side wall of the processing box has a drain pipe, and the drain pipe is communicated with the lower part inside the processing box.

[0018] To further optimize this technical solution, the lower part of the side wall of the processing box also has a slag discharge port, the slag discharge port is located above the drain pipe, and it further includes:

[0019] A filter screen, which is arranged in the lower part inside the processing box and is located below the air outlet pipe. The filter screen is sleeved on the smoke exhaust pipe, and the filter screen is located at the lower end of the slag discharge port;

[0020] An end cover, which is arranged on the slag discharge port.

[0021] The beneficial effects of the present utility model are as follows:

[0022] 1. The water mist nozzles are arranged inside the treatment box, which can remove dust and absorb heat from the flue gas discharged from the exhaust pipe. After heating up, it vaporizes and rises. The water condensation net can cool down the vaporized steam, causing it to condense, reducing the loss of moisture into the surrounding ambient air. At the same time, the heat is also collected by the water condensation net, playing a role in heat recovery, and the heat can be transferred out for utilization.

[0023] 2. The outlet pipe is horizontally placed with the outlet holes facing downwards, which can make the flue gas impact downward first, reducing the inertial impact during upward movement, and is conducive to recovering particulate impurities in the flue gas. There can be water stored or flowing at the lower part inside the treatment box, and the water comes from the water mist nozzles or the water condensation net. After the flue gas is ejected from the outlet holes, it first impacts the water at the bottom of the treatment box. The water at the bottom can effectively collect the impurities in the flue gas, and at the same time, the heat of the impurities in the flue gas is effectively recovered. There are water droplets attached to the water condensation net, which can increase the capture ability of the water condensation net for impurities in the flue gas, reduce the external discharge of impurities, and improve the dust removal effect. Brief Description of the Drawings

[0024] Figure 1 is a schematic structural diagram of the present utility model;

[0025] Figure 2 is a schematic diagram of the internal structure of the treatment box of the present utility model;

[0026] Figure 3 is a schematic diagram of the installation structure of the water condensation net of the present utility model;

[0027] Figure 4 is a schematic diagram of the top view structure of the water condensation net of the present utility model;

[0028] Figure 5 is Figure 4 the sectional view structure diagram at the A - A position in

[0029] Figure 6 is Figure 5 the partial enlarged structure diagram at position A in

[0030] Figure 7 is a schematic diagram of the semi - ring net body structure of the present utility model;

[0031] Figure 8 is a schematic diagram of the structure of the heat - absorbing water pipe of the present utility model;

[0032] Figure 9 is a schematic diagram of the internal structure of the heat - absorbing water pipe of the present utility model;

[0033] Figure 10 is a schematic diagram of the structure of the bottom inside the treatment box of the present utility model;

[0034] Marking descriptions in the figure: 1. Sintering chamber; 2. Exhaust pipe; 3. Treatment box; 301. Air outlet; 302. Drain pipe; 303. Slag discharge port; 4. Air outlet pipe; 401. Air outlet hole; 5. Water mist nozzle; 6. Water condensation net; 601. First net body; 602. Second net body; 6021. Semi-circular net body; 6022. Lapping part; 7. Fan; 8. Hot water suction pipe; 801. Water inlet pipe; 802. Water outlet pipe; 803. Baffle; 9. Water supply pipe; 10. Filter screen; 11. End cover. Detailed implementation mode

[0035] The following further elaborates on the present utility model in conjunction with the accompanying drawings and the detailed implementation mode.

[0036] To simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. Additionally, to simplify the drawings for easy understanding, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is marked. In this article, "one" not only means "only this one", but also can mean "more than one" situation, and "several" includes "two" and "more than two".

[0037] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0039] As Figure 1-10 shown, a sintering machine includes: a sintering chamber 1, an exhaust pipe 2 is arranged at the top of the sintering chamber 1, the exhaust pipe 2 is arranged vertically, and further includes: a treatment box 3, arranged on the upper side of the sintering chamber 1, the upper end of the exhaust pipe 2 extends into the treatment box 3, and the upper end of the treatment box 3 has an air outlet 301; an air outlet pipe 4, arranged horizontally, the air outlet pipe 4 is communicated with the upper end of the exhaust pipe 2, and several air outlet holes 401 are arranged on the lower side of the air outlet pipe 4, and the air outlet holes 401 point to the lower end inside the treatment box 3; a water mist nozzle 5, arranged inside the treatment box 3 and above the air outlet pipe 4 for spraying water mist downward; a water condensation net 6, having at least one, arranged inside the treatment box 3 and above the water mist nozzle 5 for condensing water vapor; a fan 7, arranged inside the air outlet 301 for exhausting air outward.

[0040] During use, the water mist nozzle 5 can be connected to an external water source to spray water downward for dust removal and heat exchange, absorbing the heat in the flue gas. Some water can accumulate at the lower part inside the treatment tank 3. The flue gas is ejected from the outlet pipe 4, impacting the water at the bottom inside the treatment tank 3, and some impurities carried by the flue gas can be collected and treated. After the flue gas rises, it is sprayed by the water mist nozzle 5 for heat exchange and secondary dust removal and dust reduction. The water mist vaporizes and rises, contacts the water condensation net 6 for heat exchange and condenses into water droplets. After the water droplets accumulate, they fall. The heat absorbed by the water condensation net 6 can be conducted to the outside through existing technologies. Multiple water condensation nets 6 can be arranged vertically to increase the collection density and play a role in contact interception for both heat and impurities in the flue gas. The fan 7 is arranged above the treatment tank 3 to facilitate guiding the flue gas upward and reduce the influence of the water condensation net 6, etc. on the upward flow of the air current, ensuring gas circulation.

[0041] In the attached drawing, the water condensation net 6 is in a structural schematic state, not representing the actual mesh number and specific structure. The water condensation net 6 can adopt a mesh structure with strong air permeability and a large contact area. It is made of a metal heat-conducting material, such as stainless iron, etc., with low cost and easy processing.

[0042] Furthermore, it further includes: a hot water absorption pipe 8, which has a water inlet pipe 801 and a water outlet pipe 802. There are several hot water absorption pipes 8, and several hot water absorption pipes 8 are spaced apart in the vertical direction. Two adjacent hot water absorption pipes 8 are connected vertically through the water inlet pipe 801 and the water outlet pipe 802. The water condensation net 6 is lapped on the hot water absorption pipe 8 and is in thermal conduction contact with the hot water absorption pipe 8. The water outlet pipe 802 of the lower hot water absorption pipe 8 is connected to the water mist nozzle 5; a water supply pipe 9, which is arranged on the upper side of the treatment tank 3, and the water supply pipe 9 is connected to the water inlet pipe 801 of the upper hot water absorption pipe 8.

[0043] During use, the hot water absorption pipe 8 can better absorb the heat of the water condensation net 6, facilitating the collection and external discharge of the heat, and keeping the water condensation net 6 in a low-temperature state for water vapor condensation. The water condensation net 6 lapped on the hot water absorption pipe 8 can conduct heat. Multiple hot water absorption pipes 8 are distributed vertically, and the connected hot water absorption pipes 8 are connected through the water inlet pipe 801 and the water outlet pipe 802. The hot water absorption pipe 8 can be an annular pipe, and an internal partition 803 divides the annular space inside the hot water absorption pipe 8 to form a one-way channel. The water inlet pipe 801 and the water outlet pipe 802 are distributed on both sides of the partition 803. The water supply pipe 9 supplies cold water to the hot water absorption pipe 8 and is connected to an external water source.

[0044] Further, the heat-absorbing water pipe 8 is annular; the water condensation net 6 includes a first net body 601 and a second net body 602. The first net body 601 is circular, the first net body 601 is lapped on the heat-absorbing water pipe 8 and is located inside the heat-absorbing water pipe 8. The second net body 602 is circular-ring-shaped, the second net body 602 is lapped on the heat-absorbing water pipe 8 and is located between the heat-absorbing water pipe 8 and the inner wall of the treatment tank 3. The second net body 602 includes two symmetrically arranged semi-ring net bodies 6021. The two semi-ring net bodies 6021 are connected by plugging to form the second net body 602. The inner side of the semi-ring net body 6021 has a lapping portion 6022. The vertical cross-section of the lapping portion 6022 is arc-shaped. The lapping portion 6022 is lapped on the upper side of the outer wall of the heat-absorbing water pipe 8. The outer side wall of the semi-ring net body 6021 abuts against the inner wall of the treatment tank 3.

[0045] During use, the water condensation net 6 can be a whole and lapped on the heat-absorbing water pipe 8, and only need to make openings to avoid the positions of the water inlet pipe 801 and the water outlet pipe 802. The water condensation net 6 can also be two net bodies. The first net body 601 is placed annularly inside the annular heat-absorbing water pipe 8, and the second net body 602 is placed outside, which is more convenient for installation.

[0046] The second net body 602 is composed of two semi-ring net bodies 6021. The two semi-ring net bodies 6021 can be connected by plugging to form a complete second net body 602, and at the same time, bolts or the like can be used to strengthen the connection. In the form of butt joint, it is more convenient to install the second net body 602 on the heat-absorbing water pipe 8, and the installation is more convenient. According to the working environment, when installing, the water volume of the heat-absorbing water pipe 8, the number of water condensation nets 6 and the installation position on the heat-absorbing water pipe 8 can be selected.

[0047] Further, the lower part of the side wall of the treatment tank 3 has a drain pipe 302, and the drain pipe 302 communicates with the lower part inside the treatment tank 3.

[0048] During use, the water that absorbs heat and reduces dust falls to the lower part inside the treatment tank 3 and can be discharged by the drain pipe 302, leading the hot water to other devices or places that need heat, improving energy utilization. The water level in the treatment tank 3 can be controlled below the air outlet pipe 4 to prevent backflow.

[0049] Further, the lower part of the side wall of the treatment tank 3 also has a slag discharge port 303. The slag discharge port 303 is located above the drain pipe 302, and further includes: a filter screen 10, which is arranged in the lower part inside the treatment tank 3 and is located below the air outlet pipe 4. The filter screen 10 is sleeved on the smoke exhaust pipe 2, and the filter screen 10 is located at the lower end of the slag discharge port 303; an end cover 11, which is arranged on the slag discharge port 303.

[0050] During use, the filter screen 10 can filter impurities in the water at the bottom inside the treatment tank 3, reducing the residue of impurities when supplying hot water externally. The impurities on the filter screen 10 can be discharged externally regularly through the slag discharge port 303. The end cover 11 can be plugged and locked with bolts or the like.

[0051] It is understood that the present utility model is described through some embodiments. Those skilled in the art will know that, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A sintering machine, comprising: A sintering chamber (1), wherein a smoke exhaust pipe (2) is arranged at the top of the sintering chamber (1), wherein the smoke exhaust pipe (2) is arranged vertically, and is characterized in that it further comprises: A processing box (3) is arranged on the upper side of the sintering chamber (1), the upper end of the smoke exhaust pipe (2) extends into the processing box (3), and the upper end of the processing box (3) is provided with an exhaust port (301); An air outlet pipe (4) is arranged transversely, the air outlet pipe (4) is connected to the upper end of the smoke exhaust pipe (2), and the lower side of the air outlet pipe (4) has a plurality of air outlet holes (401), and the air outlet holes (401) point to the lower end of the processing box (3); A water mist nozzle (5) is arranged in the processing box (3) and located above the air outlet pipe (4) and is used to spray water mist downward; a hydrocondensation net (6), having at least one, arranged in the treatment box (3) and located above the water mist nozzle (5), for condensing water vapor; A fan (7) is arranged in the air outlet (301) and is used to exhaust air outwards.

2. A sintering machine according to claim 1, characterized in that: Also includes: A hot water absorption pipe (8) having a water inlet pipe (801) and a water outlet pipe (802), wherein the hot water absorption pipe (8) is provided in a plurality and the plurality of hot water absorption pipes (8) are spaced apart in the vertical direction, two adjacent hot water absorption pipes (8) are vertically connected via the water inlet pipe (801) and the water outlet pipe (802), the hydrocondensation net (6) is overlapped on the hot water absorption pipe (8) and is in heat conduction contact with the hot water absorption pipe (8), and the water outlet pipe (802) of the hot water absorption pipe (8) at the lower side is connected to the water mist nozzle (5); A water supply pipe (9) is arranged on the upper side of the treatment box (3), and the water supply pipe (9) is connected to the water inlet pipe (801) of the hot water absorption pipe (8) on the upper side.

3. A sintering machine according to claim 2, characterized in that: The hot water absorption pipe (8) is annular; the hydrogel net (6) comprises a first net body (601) and a second net body (602); the first net body (601) is circular, the first net body (601) is overlapped on the hot water absorption pipe (8) and is located inside the hot water absorption pipe (8); the second net body (602) is annular, the second net body (602) is overlapped on the hot water absorption pipe (8) and is located between the hot water absorption pipe (8) and the inner wall of the treatment box (3).

4. A sintering machine according to claim 3, characterized in that: The second mesh body (602) comprises two symmetrically arranged half-ring mesh bodies (6021), and the two half-ring mesh bodies (6021) are plugged together to form the second mesh body (602). The inner side of the half-ring mesh body (6021) has an overlapping portion (6022), and the vertical cross-section of the overlapping portion (6022) is arc-shaped. The overlapping portion (6022) overlaps the upper side of the outer wall of the hot water absorption pipe (8), and the outer wall of the half-ring mesh body (6021) abuts against the inner wall of the treatment box (3).

5. A sintering machine according to claim 1, characterized in that: The lower part of the side wall of the processing box (3) is provided with a drainage pipe (302), and the drainage pipe (302) is connected to the lower part of the processing box (3).

6. A sintering machine according to claim 5, characterized in that: The processing box (3) also has a slag discharge port (303) at the lower part of the side wall, and the slag discharge port (303) is located above the drainage pipe (302), and further includes: A filter screen (10) is arranged in the lower part of the processing box (3) and below the air outlet pipe (4); the filter screen (10) is sleeved on the smoke exhaust pipe (2); and the filter screen (10) is located at the lower end of the slag discharge port (303); The end cover (11) is arranged on the slag discharge port (303).

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