A sintering machine

Abstract

The application relates to a sintering machine and relates to the technical field of steel smelting, which comprises a sintering machine body, a smoke collecting hood fixedly connected to a sintering position of the sintering machine body, a heat exchange box arranged on one side of the smoke collecting hood, a connecting pipe fixedly connected and communicated between the heat exchange box and the smoke collecting hood, an air induction fan fixedly connected and communicated to a side of the heat exchange box away from the smoke collecting hood, a heat exchange coil fixedly connected in the heat exchange box, a cleaning mechanism arranged in the heat exchange coil and used for cleaning an outer wall of the heat exchange coil, and a collecting box communicated with a lower end of the heat exchange box and used for collecting residues in flue gas cleaned by the cleaning mechanism. The application has the effect of recycling heat in flue gas generated in a sintering process of the sintering machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel smelting, and particularly relates to a sintering machine. BACKGROUND

[0002] The sintering machine is a device for heating powdery or granular materials to below the melting point through high temperature, so that physical and chemical reactions occur between the particles to form blocky materials with certain strength. It is widely used in the steel, non-ferrous metal, chemical, building material and other industries, especially in the steel industry, the sintering machine is used to sinter iron ore powder, coke powder, limestone powder and other raw materials after mixing into sintered ore as raw materials for blast furnace ironmaking. The sintering process not only can improve the physical properties of raw materials, but also can remove part of the harmful impurities and improve the utilization rate of raw materials.

[0003] In the related art, when the sintering machine is used to sinter iron ore powder, coke powder, limestone powder and other raw materials, a certain amount of high-temperature flue gas will be generated. This part of high-temperature flue gas is usually directly discharged into the flue gas purification device for purification and then discharged. However, the heat in this part of high-temperature flue gas still has certain recycling value, and direct purification and discharge will cause energy waste. CONTENT OF THE UTILITY MODEL

[0004] In order to recycle the heat in the flue gas generated in the sintering process of the sintering machine, the present application provides a sintering machine.

[0005] The sintering machine provided by the present application adopts the following technical scheme:

[0006] A sintering machine, comprising a sintering machine body, a smoke collecting hood fixedly connected to the sintering position of the sintering machine body, a heat exchange box body arranged on one side of the smoke collecting hood, a connecting pipe fixedly connected and communicated between the heat exchange box body and the smoke collecting hood, a draft fan fixedly connected and communicated to the side of the heat exchange box body away from the smoke collecting hood, a heat exchange coil fixedly connected in the heat exchange box body, a cleaning mechanism arranged in the heat exchange coil for cleaning the outer wall of the heat exchange coil, and a collection box communicated to the lower end of the heat exchange box body for collecting the residues in the flue gas cleaned by the cleaning mechanism.

[0007] By adopting the above technical scheme, the draft fan can be started, the flue gas generated in the sintering process can be collected through the smoke collecting hood, then the flue gas enters the heat exchange box body through the connecting pipe, then the heat exchange medium is sent into the heat exchange coil, so that the heat in the flue gas is conducted out through the heat exchange medium in the heat exchange coil. Thus, the heat in the flue gas generated in the sintering process of the sintering machine can be recycled, and when maintaining, the impurities attached to the outer wall of the heat exchange coil can be cleaned by the cleaning mechanism, so that the heat exchange effect of the heat exchange coil can be maintained.

[0008] Optionally, a connecting piece is arranged between the collecting box and the bottom end of the heat exchange box body for fixing the two.

[0009] By adopting the above technical scheme, the connecting piece can be used to realize detachable connection between the collecting box and the heat exchange box body, thereby facilitating cleaning of impurities in the collecting box.

[0010] Optionally, the connecting piece is a threaded cylinder which is threadedly connected to the upper end of the collecting box and the lower end of the heat exchange box body.

[0011] By adopting the above technical scheme, the threaded cylinder can be rotated to separate the collecting box and the heat exchange box body.

[0012] Optionally, the cleaning mechanism comprises a plurality of mounting pieces which are slidingly connected to the heat exchange coil, and cleaning blocks are fixedly connected to the mounting pieces, the cleaning blocks are arranged around the outer wall of the heat exchange coil, and a driving assembly is arranged on the heat exchange box body for driving the mounting pieces to move up and down.

[0013] By adopting the above technical scheme, the driving assembly can be used to drive the mounting pieces to reciprocally slide along the length direction of the heat exchange coil, thereby cleaning most positions of the vertical part of the heat exchange coil, so that the heat exchange efficiency of the heat exchange coil can be maintained.

[0014] Optionally, the driving assembly comprises a cylinder which is fixedly connected to the upper end of the heat exchange box body, a connecting plate is arranged in the heat exchange box body, and a support plate is fixedly connected between the connecting plate and each of the mounting pieces, and the extension end of the cylinder penetrates through the heat exchange box body and is fixedly connected to the connecting plate.

[0015] By adopting the above technical scheme, the cylinder can be controlled to extend and retract, so as to drive the connecting plate to reciprocally move up and down, thereby driving the mounting pieces to reciprocally move up and down.

[0016] Optionally, a spraying assembly is arranged in the heat exchange box body for spraying the connecting position of the cleaning block and the heat exchange coil.

[0017] By adopting the above technical scheme, the outer wall of the heat exchange coil can be sprayed by the spraying assembly during maintenance, thereby realizing spraying and dust removal of the outer wall of the heat exchange coil without disassembling the heat exchange coil.

[0018] Optionally, the spraying assembly comprises a plurality of spraying pipes which are penetratingly and slidingly connected to the heat exchange box body, the spraying pipes are in one-to-one correspondence with the mounting pieces, and the water outlet end of each spraying pipe is fixedly connected to the corresponding mounting piece.

[0019] By adopting the technical scheme, water flow can be supplied into the spray pipe, the water flow sprays the heat exchange coil through the spray pipe, and the spray pipe can move together with the mounting piece, thereby improving the spraying range of the spray pipe.

[0020] Optionally, the upper ends of the plurality of spray pipes are fixedly connected and communicated with a same water supply hose.

[0021] By adopting the technical scheme, water can be uniformly supplied into the plurality of spray pipes through the water supply hose.

[0022] To sum up, the present application has at least one of the following beneficial technical effects:

[0023] 1. The induced draft fan can be started, and the flue gas generated during the sintering process can be collected through the smoke hood, then the flue gas enters the heat exchange box through the connecting pipe, then the heat exchange medium is sent into the heat exchange coil, so that the heat in the flue gas is conducted out through the heat exchange medium in the heat exchange coil, thereby the heat in the flue gas generated during the sintering process of the sintering machine can be recovered, and when maintaining, the impurities attached to the outer wall of the heat exchange coil can be cleaned by the cleaning mechanism, thereby the heat exchange effect of the heat exchange coil can be maintained well;

[0024] 2. The driving assembly can drive the mounting piece to reciprocate along the length direction of the heat exchange coil, so that the cleaning block can clean most positions of the vertical part of the heat exchange coil, thereby the heat exchange efficiency of the heat exchange coil can be maintained well;

[0025] 3. When maintaining, the outer wall of the heat exchange coil can be sprayed by the spray assembly, thereby the outer wall of the heat exchange coil can be sprayed and dusted without disassembling the heat exchange coil. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a whole structure schematic view of the embodiment of the present application;

[0027] Figure 2 is a structure schematic view of the water supply hose of the embodiment of the present application.

[0028] In the figure, 1 is a sintering machine body; 2 is a smoke hood; 3 is a heat exchange box; 4 is a connecting pipe; 5 is an induced draft fan; 6 is a heat exchange coil; 7 is a cleaning mechanism; 71 is a mounting piece; 72 is a cleaning block; 73 is a driving assembly; 731 is a cylinder; 732 is a connecting plate; 733 is a support plate; 8 is a collection box; 9 is a connecting piece; 10 is a spray assembly; 101 is a spray pipe; 11 is a water supply hose. DETAILED DESCRIPTION

[0029] The following will be described in detail in combination with the accompanying Figure 1 - the accompanying Figure 2 The present application will be further described in detail.

[0030] The embodiment of the application is a sintering machine, which refers to Figure 1 , comprising a sintering machine body 1, a sintering position of the sintering machine body 1 is provided with a smoke hood 2, in the embodiment, the smoke hood 2 is provided with two and is respectively installed at both sides of the sintering position of the sintering machine body 1. The opening of the smoke hood 2 faces the sintering position of the sintering machine body 1.

[0031] Referring to Figure 1 and Figure 2 , one side of the smoke hood 2 is provided with a heat exchange box body 3, the heat exchange box body 3 corresponds to the smoke hood 2 one by one. The heat exchange box body 3 and the smoke hood 2 are fixedly connected and communicated with a connecting pipe 4, the side of the heat exchange box body 3 away from the smoke hood 2 is fixedly connected and communicated with an induced draft fan 5, the heat exchange box body 3 is fixedly connected with a heat exchange coil 6, and the water inlet end and the water outlet end of the heat exchange coil 6 are arranged outside the heat exchange box body 3 and fixedly connected with the heat exchange box body 3. The heat exchange coil 6 is provided with a cleaning mechanism 7 for cleaning the outer wall of the heat exchange coil 6.

[0032] The cleaning mechanism 7 comprises a plurality of mounting pieces 71 slidably connected to the heat exchange coil 6, the mounting pieces 71 are arranged in a circular ring shape, the mounting pieces 71 are arranged around the side wall of the heat exchange coil 6 and can reciprocate along the length direction of the heat exchange coil 6.

[0033] The lower end of the mounting piece 71 is fixedly connected with a cleaning block 72, the cleaning block 72 is arranged around the outer wall of the heat exchange coil 6 and abuts against the outer wall of the heat exchange coil 6, and the cleaning block 72 can be made of heat-resistant rubber material, heat-resistant sponge material or the like, and the heat exchange box body 3 is provided with a driving assembly 73 for driving the mounting piece 71 to move up and down.

[0034] The driving assembly 73 comprises a gas cylinder 731 fixedly connected to the upper end of the heat exchange box body 3, and a connecting plate 732 is arranged in the heat exchange box body 3 and parallel to the upper end surface of the heat exchange box body 3. A support plate 733 is fixedly connected between the connecting plate 732 and the plurality of mounting pieces 71, and the support plate 733 corresponds to the mounting piece 71 one by one. The extension end of the gas cylinder 731 penetrates through the heat exchange box body 3 and is fixedly connected with the connecting plate 732, and the extension direction of the gas cylinder 731 is perpendicular to the upper end surface of the connecting plate 732.

[0035] The extension of the gas cylinder 731 can be controlled to drive the connecting plate 732 to reciprocate up and down, so that the mounting piece 71 reciprocates along the length direction of the heat exchange coil 6, and the cleaning block 72 cleans most positions of the vertical part of the heat exchange coil 6.

[0036] In order to improve the cleaning, the heat exchange box body 3 is provided with a spraying assembly 10 for spraying the connecting position of the cleaning block 72 and the heat exchange coil 6.

[0037] The spraying assembly 10 comprises a plurality of spraying pipes 101 which are arranged through and slidingly connected to the heat exchange box 3. The spraying pipes 101 correspond to the mounting pieces 71 one by one, and the water outlet ends of the spraying pipes 101 are fixedly connected to the upper end faces of the mounting pieces 71. Meanwhile, in order to facilitate the unified water supply to the plurality of spraying pipes 101, the upper ends of the plurality of spraying pipes 101 are fixedly connected and communicated with the same water supply hose 11.

[0038] Thus, the water flow can be supplied to the spraying pipes 101 through the water supply hose 11, so that the water flow sprays the heat exchange coil 6 through the spraying pipes 101, and the water outlet ends of the spraying pipes 101 can move together with the mounting pieces 71, thereby improving the spraying range of the spraying pipes 101.

[0039] The lower end of the heat exchange box 3 is communicated with a collecting box 8 for collecting the residues in the flue gas cleaned by the cleaning mechanism 7, and the end of the heat exchange box 3 close to the collecting box 8 is gradually contracted. A connecting piece 9 for fixing the collecting box 8 and the heat exchange box 3 is arranged between the collecting box 8 and the bottom end of the heat exchange box 3. In the embodiment, the connecting piece 9 is a threaded cylinder which is threadedly connected to the upper end of the collecting box 8 and the lower end of the heat exchange box 3. The threaded cylinder can be separated from the connecting position between the collecting box 8 and the heat exchange box 3 by rotating the threaded cylinder, thereby separating the collecting box 8 and the heat exchange box 3.

[0040] The embodiments of the specific embodiments are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same parts are indicated by the same reference numerals. Therefore, equivalent changes made according to the structure, shape, principle of the present application should be covered by the protection scope of the present application.

Claims

1. A sintering machine comprising a sintering machine body (1), characterised in that, The sintering machine body (1) is fixedly connected with a fume hood (2), one side of the fume hood (2) is provided with a heat exchange box (3), the heat exchange box (3) is fixedly connected and communicated with the fume hood (2) through a connecting pipe (4), one side of the heat exchange box (3) away from the fume hood (2) is fixedly connected and communicated with an induced draft fan (5), the heat exchange box (3) is fixedly connected with a heat exchange coil (6), the heat exchange coil (6) is provided with a cleaning mechanism (7) for cleaning the outer wall of the heat exchange coil (6), and the lower end of the heat exchange box (3) is communicated with a collection box (8) for collecting residues in the flue gas cleaned by the cleaning mechanism (7).

2. A sintering machine according to claim 1, characterised in that The collection box (8) and the bottom end of the heat exchange box (3) are provided with a connecting piece (9) for fixing the two.

3. A sintering machine according to claim 2, characterised in that The connecting piece (9) is a threaded cylinder which is threadedly connected to the upper end of the collection box (8) and the lower end of the heat exchange box (3).

4. A sintering machine according to claim 1, characterized in that The cleaning mechanism (7) comprises a plurality of mounting pieces (71) slidably connected to the heat exchange coil (6), the mounting pieces (71) are fixedly connected with cleaning blocks (72), the cleaning blocks (72) are arranged around the outer wall of the heat exchange coil (6), and the heat exchange box (3) is provided with a driving assembly (73) for driving the mounting pieces (71) to move up and down.

5. A sintering machine according to claim 4, characterised in that The driving assembly (73) comprises a cylinder (731) fixedly connected to the upper end of the heat exchange box (3), the heat exchange box (3) is provided with a connecting plate (732), a plurality of mounting pieces (71) are fixedly connected with a support plate (733), and the extension end of the cylinder (731) penetrates through the heat exchange box (3) and is fixedly connected with the connecting plate (732).

6. A sintering machine according to claim 5, characterised in that The heat exchange box (3) is provided with a spraying assembly (10) for spraying the connecting part of the cleaning block (72) and the heat exchange coil (6).

7. A sintering machine according to claim 6, characterised in that The spraying assembly (10) comprises a plurality of spraying pipes (101) penetrating and slidably connected to the heat exchange box (3), the spraying pipes (101) correspond to the mounting pieces (71) one by one, and the water outlet ends of the spraying pipes (101) are fixedly connected to the mounting pieces (71).

8. A sintering machine according to claim 7, characterised in that The upper ends of the plurality of spraying pipes (101) are fixedly connected and communicated with a same water supply hose (11).

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