Heating device for heating aluminum alloy clean ingot

Abstract

The utility model relates to the technical field of aluminum alloy production, in particular to a heating device for heating an aluminum alloy clean ingot, which comprises an oil smoke treatment system, a cooler, a heating box and a filter component, the oil smoke treatment system is communicated with a smoke pipeline, and the smoke pipeline is communicated with the cooler; a heat exchange coil pipe is arranged in the cooler, two ends of the heat exchange coil pipe are respectively communicated with a circulating pipe and a return pipe, and the circulating pipe and the return pipe are both communicated with the heating box; the inlet end of the filter is communicated with a water outlet pipe, the outlet end of the filter is communicated with a water inlet pipe, and the water outlet pipe and the water inlet pipe are both connected with the heating box; one end of the heating box is communicated with a drain pipe, and the other end of the drain pipe is communicated with a water collecting tank. According to the heating device, the aluminum alloy clean ingot is heated, the temperature difference between the aluminum alloy clean ingot and the heating furnace is reduced, and liquid drops are prevented from being condensed on the surface of the aluminum alloy clean ingot, so that the liquid drops are prevented from volatilizing on the surface of the aluminum alloy clean ingot to leave watermarks during heat treatment of the aluminum alloy clean ingot.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy production, in particular to a heating device for heating a net aluminum alloy ingot. Background Art

[0002] Aluminum alloy net ingots are processed with pure aluminum and recycled aluminum as raw materials. Before hot rolling, the traditional aluminum alloy net ingots need to be heat treated. At present, the aluminum alloy net ingots are usually placed in a box-type heating furnace for heat treatment. However, when the aluminum alloy net ingots are heat treated in the prior art, when the temperature of the aluminum alloy net ingots is lower than room temperature, or when the aluminum alloy net ingots are produced and put into the furnace during winter, due to the high temperature in the heating furnace, the temperature difference between the heating furnace and the aluminum alloy net ingots is large, and droplets will condense on the surface of the aluminum alloy net ingots in a short time. As the heating furnace door is closed and the heat treatment is carried out, the droplets evaporate, and watermarks will be left on the surface of the aluminum alloy net ingots. The watermarks left by the volatilization of the droplets on the surface of the aluminum alloy net ingots cannot be eliminated by rolling during the production process, which affects the production quality of aluminum alloy products and may even cause scrapping in severe cases. Summary of the invention

[0003] The utility model aims to solve the problem that, during the heat treatment of the aluminum alloy net ingot in the prior art, liquid droplets are easily condensed on the surface of the aluminum alloy net ingot, and the liquid droplets are easily left on the surface of the aluminum alloy net ingot after volatilization. A heating device for heating the aluminum alloy net ingot is provided. The device heats the aluminum alloy net ingot before the aluminum alloy net ingot enters the heating furnace, thereby reducing the temperature difference between the aluminum alloy net ingot and the heating furnace to avoid condensation of liquid droplets on the surface of the aluminum alloy net ingot, thereby avoiding the liquid droplets from volatilizing on the surface of the aluminum alloy net ingot during the heat treatment of the aluminum alloy net ingot and leaving watermarks on the surface of the aluminum alloy net ingot, thereby improving the production quality of aluminum alloy products.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: a heating device for heating aluminum alloy net ingots, comprising an oil fume treatment system and a cooler, and also comprising a heating box and a filter assembly, the oil fume treatment system is connected to a flue gas duct, and the flue gas duct is connected to the cooler; a heat exchange coil is arranged in the cooler, and the two ends of the heat exchange coil are respectively connected to a circulation pipe and a return pipe, and the circulation pipe and the return pipe are both connected to the heating box, and a circulation pump is arranged on the circulation pipe, and the heating box is used to store heat exchange medium and aluminum alloy net ingots that need to be heated, and the heat exchange medium is used to heat the aluminum alloy net ingot, and under the action of the cooler, the heat exchange medium exchanges heat with the oil fume gas, and the heat exchange medium is heated and refluxes into the heating box, and the aluminum alloy net ingot is heated, thereby reducing the temperature difference between the aluminum alloy net ingot and the heating furnace.

[0005] The filter assembly includes a filter, the inlet end of the filter is connected to a water outlet pipe, the outlet end of the filter is connected to a water inlet pipe, the water outlet pipe and the water inlet pipe are both connected to the heating box, and the heat exchange medium inside the heating box can be filtered through the filter to filter out impurities contained in the heat exchange medium.

[0006] One end of the heating box is also connected to a drain pipe, and the other end of the drain pipe is connected to a water collecting tank, which is used to recover and process the heat exchange medium.

[0007] Furthermore, a valve one is provided on the circulation pipe, and a valve three is provided on the drainage pipe.

[0008] Furthermore, a water pump and a second valve are provided on the water outlet pipe, and the water pump is used to transport the heat exchange medium in the heating box to the filter.

[0009] Furthermore, an overflow pipe is connected to an upper portion of one side of the heating box, and the overflow pipe is in an "L"-shaped structure. When there is too much heat exchange medium in the heating box, the heat exchange medium can flow out through the overflow pipe.

[0010] Furthermore, a heat-insulating shell is fixedly provided on the outer wall of the heating box, and the interior of the heat-insulating shell is filled with silicate felt, which plays a role of heat preservation.

[0011] Furthermore, a plurality of support components are arranged at intervals inside the heating box, and the support components include a rubber pad and two strip plates. The strip plate is fixedly arranged on the upper surface of the bottom plate of the heating box, and the rubber pad is arranged between the two strip plates. The width of the rubber pad is greater than that of the strip plates. The rubber pad plays a role in supporting the aluminum alloy net ingot to prevent scratches on the surface of the aluminum alloy net ingot.

[0012] Furthermore, both sides of the inner wall of the heating box are provided with hanging parts, and the hanging parts include two oppositely arranged hooks, which are convenient for lifting the heating box.

[0013] Furthermore, reinforcing plates 1 are fixedly provided at the corners inside the heating box, and a plurality of reinforcing plates 2 are spaced apart at the top edge of the bottom plate of the heating box.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model has a reasonable structure and good use effect. Before the aluminum alloy net ingot enters the heating furnace for heat treatment, the aluminum alloy net ingot is heated to reduce the temperature difference between the aluminum alloy net ingot and the heating furnace to avoid condensation of droplets on the surface of the aluminum alloy net ingot, thereby avoiding volatilization of droplets during the heat treatment of the aluminum alloy net ingot and leaving watermarks on the surface of the aluminum alloy net ingot, thereby improving the production quality of aluminum alloy products.

[0016] The utility model adopts a water bath heating method to heat the aluminum alloy net ingot, thereby reducing the temperature difference between the aluminum alloy net ingot and the heating furnace, or making the temperature of the aluminum alloy net ingot equal to the temperature in the heating furnace, thereby achieving the effect of avoiding condensation of droplets on the surface of the aluminum alloy net ingot.

[0017] The utility model exchanges heat between the heat exchange medium in the heating box and the oil fume gas in the oil fume treatment system, uses the heat of the oil fume gas to increase the temperature of the heat exchange medium, and makes the heat exchange medium flow back into the heating box, thereby achieving the effect of heating the aluminum alloy net ingot by the heat exchange medium, and realizing the effect of comprehensive utilization of waste heat in the oil fume treatment system. The waste heat in the traditional oil fume treatment system is directly transferred to the workshop, which not only causes the workshop environment temperature to be high, but also causes waste of resources.

[0018] The filter of the filter assembly of the utility model filters the heat exchange medium inside the heating box, filters the impurities contained in the heat exchange medium, and prevents the impurities in the heating medium from excessively adhering to the surface of the aluminum alloy net ingot. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a heating device for heating a net aluminum alloy ingot of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the heating box of the utility model. Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the structure of the heating box of the utility model. Figure 2 .

[0022] The numbers in the accompanying drawings are: 1 is the oil fume treatment system, 2 is the flue gas duct, 3 is the cooler, 4 is the heating box, 401 is the overflow pipe, 402 is the insulation shell, 403 is the strip plate, 404 is the rubber pad, 405 is the hook, 406 is the reinforcement plate one, 407 is the reinforcement plate two, 5 is the circulation pipe, 6 is the circulation pump, 7 is the valve one, 8 is the return pipe, 10 is the filter, 11 is the outlet pipe, 12 is the water inlet pipe, 13 is the water pump, 14 is the valve two, 15 is the water collection tank, 16 is the drain pipe, and 17 is the valve three. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0024] like Figure 1 to Figure 3As shown, a heating device for heating a net aluminum alloy ingot comprises an oil fume treatment system 1 and a cooler 3, and also comprises a heating box 4 and a filter assembly. The oil fume treatment system 1 is connected to a flue gas duct 2, and the flue gas duct 2 is connected to the cooler 3; a heat exchange coil is arranged in the cooler 3, and the two ends of the heat exchange coil are respectively connected to a circulation pipe 5 and a return pipe 8, and the circulation pipe 5 and the return pipe 8 are both connected to the heating box 4, and a circulation pump 6 is arranged on the circulation pipe 5. The oil fume treatment system 1 and the cooler 3 in this embodiment adopt the annealing furnace oil fume recovery and treatment system and cooler in the Chinese utility model patent with authorization announcement number CN 217895691 U; wherein the heating box 4 stores the heat exchange medium, the heat exchange medium is water, the cooler 3 is provided with an oil fume inlet and an oil fume outlet, one end of the flue gas pipe 2 is connected to the oil fume inlet of the cooler 3, the oil fume treatment system 1 transports the oil fume gas to the cooler 3 through the flue gas pipe 2, the circulating pump 6 transports the heat exchange medium in the heating box 4 to the heat exchange coil in the cooler 3 through the circulating pipe 5, the heat exchange medium exchanges heat with the oil fume gas, the temperature of the heat exchange medium increases, the temperature of the oil fume gas decreases, the oil fume gas after heat exchange is discharged through the oil fume outlet of the cooler 3, and the heat exchange medium after heat exchange flows back to the heating box 4 through the reflux pipe 8.

[0025] The filter assembly includes a filter 10, the inlet end of the filter 10 is connected to a water outlet pipe 11, the outlet end of the filter 10 is connected to a water inlet pipe 12, and the water outlet pipe 11 and the water inlet pipe 12 are both connected to the heating box 4. In this embodiment, the heat exchange medium in the heating box 4 is transported to the filter 10 through the water outlet pipe 11, the filter 10 filters the heat exchange medium, and the filtered heat exchange medium flows back to the heating box 4 through the water inlet pipe 12.

[0026] One end of the heating box 4 is also connected to a drain pipe 16, and the other end of the drain pipe 16 is connected to a water collecting tank 15. In this embodiment, when the heat exchange medium in the heating box 4 contains too many impurities, the heat exchange medium in the heating box 4 can be transported to the water collecting tank 15 through the drain pipe 16.

[0027] The circulation pipe 5 is also provided with a valve 1 7 , and the drainage pipe 16 is provided with a valve 3 17 . In this embodiment, the valve 1 7 is used to open and close the circulation pipe 5 , and the valve 3 17 is used to open and close the drainage pipe.

[0028] The water outlet pipe 11 is provided with a water pump 13 and a second valve 14 . In this embodiment, the water pump 13 is used to transport the heat exchange medium in the heating box 4 to the filter 10 , and the second valve 14 is used to open and close the water outlet pipe 11 .

[0029] An overflow pipe 401 is also connected to the upper part of one side of the heating box 4. The overflow pipe 401 is in an "L" shape. In this embodiment, when there is too much heat exchange medium in the heating box 4 and the height of the heat exchange medium reaches the height of the overflow pipe 401, the heat exchange medium is discharged from the heating box 4 through the overflow pipe 401.

[0030] A heat-insulating shell 402 is fixedly provided on the outer wall of the heating box 4, and the interior of the heat-insulating shell 402 is filled with silicate felt, which plays a role of heat preservation.

[0031] The heating box 4 is provided with a plurality of support components at intervals inside, and the support components include a rubber pad 404 and two strip plates 403, the strip plate 403 is fixedly arranged on the upper surface of the bottom plate of the heating box 4, the rubber pad 404 is arranged between the two strip plates 403, and the width of the rubber pad 404 is greater than the width of the strip plates 403. In this embodiment, the number of support components is two, the strip plate 403 is welded and fixed on the upper surface of the bottom plate of the heating box 4, the number of rubber pads 404 between the two strip plates 403 is two, and the rubber pad 404 plays a supporting role for the aluminum alloy net ingot, preventing the aluminum alloy net ingot from directly contacting the bottom plate of the heating box 4, and avoiding scratches on the surface of the aluminum alloy net ingot.

[0032] Hanging parts are provided on both sides of the inner wall of the heating box 4, and the hanging parts include two oppositely arranged hooks 405. In this embodiment, the hooks 405 are welded and fixed to the inner wall of the heating box 4, and the two hooks 405 are in an "eight" shape structure, which facilitates the heating box 4 to be lifted and transported.

[0033] A reinforcing plate 1 406 is fixedly provided at the corners inside the heating box 4, and a plurality of reinforcing plates 2 407 are arranged at intervals at the top edge of the bottom plate of the heating box 4. In this embodiment, there are two reinforcing plates 1 406 at the corners inside the heating box 4, and both the reinforcing plates 1 406 and the reinforcing plates 2 407 are welded and fixed to the heating box 4 to play a role of stabilization and reinforcement.

[0034] The working principle of the utility model is as follows: first, a heat exchange medium is introduced into the heating box 4, and the aluminum alloy net ingot is hoisted into the heating box 4, and the aluminum alloy net ingot is placed on the rubber pads 404 of the two supporting components. Open valve one 7 and valve two 14, close valve three 17, and turn on the circulation pump 6 and the water pump 13. The oil fume treatment system 1 transports the oil fume gas to the cooler 3 through the flue gas pipeline 2. The circulation pump 6 transports the heat exchange medium in the heating box 4 to the heat exchange coil in the cooler 3 through the circulation pipe 5. The heat exchange medium exchanges heat with the oil fume gas, the temperature of the heat exchange medium increases, and the temperature of the oil fume gas decreases. The oil fume gas after heat exchange is discharged through the oil fume outlet of the cooler 3. The heat exchange medium after heat exchange flows back to the heating box 4 through the reflux pipe 8. The cycle is repeated, and the temperature of the heat exchange medium in the heating box 4 gradually increases. The heat exchange medium performs water bath heating treatment on the aluminum alloy net ingot. The water pump 13 transports the heat exchange medium in the heating box 4 to the filter 10 through the water outlet pipe 11 . The filter 10 filters the heat exchange medium, and the filtered heat exchange medium flows back to the heating box 4 through the water inlet pipe 12 .

[0035] The embodiments described above are only preferred embodiments of the utility model and do not limit the scope of implementation of the utility model. Therefore, all equivalent changes or modifications made according to the technical solutions described in the patent scope of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. A heating device for heating a clean aluminum alloy ingot, comprising an oil fume treatment system (1) and a cooler (3), characterized in that: It also comprises a heating box (4) and a filter assembly, the fume treatment system (1) is connected to a fume duct (2), and the fume duct (2) is connected to the cooler (3); a heat exchange coil is arranged in the cooler (3), and two ends of the heat exchange coil are respectively connected to a circulation pipe (5) and a return pipe (8), and the circulation pipe (5) and the return pipe (8) are both connected to the heating box (4), and a circulation pump (6) is arranged on the circulation pipe (5); The filter assembly comprises a filter (10), the inlet end of the filter (10) is connected to a water outlet pipe (11), the outlet end of the filter (10) is connected to a water inlet pipe (12), and the water outlet pipe (11) and the water inlet pipe (12) are both connected to the heating box (4); One end of the heating box (4) is also connected to a drainage pipe (16), and the other end of the drainage pipe (16) is connected to a water collection tank (15).

2. A heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: The circulation pipe (5) is also provided with a valve one (7), and the drainage pipe (16) is provided with a valve three (17).

3. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: The water outlet pipe (11) is provided with a water pump (13) and a second valve (14).

4. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: An upper portion of one side of the heating box (4) is also connected to an overflow pipe (401), and the overflow pipe (401) is in an "L"-shaped structure.

5. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: A heat-insulating shell (402) is fixedly provided on the outer wall of the heating box (4), and the interior of the heat-insulating shell (402) is filled with silicate felt.

6. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: A plurality of support components are arranged at intervals inside the heating box (4), the support components comprising a rubber pad (404) and two strip plates (403), the strip plates (403) being fixedly arranged on the upper surface of the bottom plate of the heating box (4), the rubber pad (404) being arranged between the two strip plates (403), and the width of the rubber pad (404) being greater than the width of the strip plates (403).

7. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: Hanging parts are provided on both sides of the inner wall of the heating box (4), and the hanging parts include two hanging hooks (405) arranged opposite to each other.

8. The heating device for heating a net aluminum alloy ingot according to claim 1, characterized in that: Reinforcing plates 1 (406) are fixedly arranged at the corners inside the heating box (4), and a plurality of reinforcing plates 2 (407) are arranged at intervals at the top edge of the bottom plate of the heating box (4).

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