Gas type aluminum liquid holding furnace for producing transmission rear cover

Abstract

The utility model discloses a gas type aluminium liquid heat preservation furnace for transmission rear cover production, including furnace body and control cabinet, the furnace body top center is provided with combustion box, and combustion box includes mixing chamber and combustion chamber, the combustion box top is provided with air preheater, and the air preheater's air inlet end is connected with air delivery pipe, and the air preheater's air outlet end is connected with preheating air delivery pipe, and preheating air delivery pipe communicates with mixing chamber, and mixing chamber still communicates with gas delivery pipe, the combustion chamber communicates with heating cavity, and the combustion chamber communicates with flue gas discharge pipe, the utility model discloses through setting up air preheater to the air preheating again with gas mixes, has improved the efficiency of gas combustion, has solved the problem that the air at normal temperature mixes with gas and appears uneven combustion, can better heat and heat preservation to aluminium liquid, through setting up flue gas discharge pipe to the flue gas in the combustion process recycles, has solved the problem that flue gas directly discharges to workshop in and leads to workshop temperature rise.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum liquid heat preservation furnaces, specifically to a gas-fired aluminum liquid heat preservation furnace for the production of gearbox rear covers. Background Technology

[0002] The transmission rear cover is mainly formed using aluminum alloy casting. During the casting process, the molten aluminum is usually kept warm in a heat preservation furnace. Among them, the gas-fired molten aluminum heat preservation furnace supplies the heat required for heat preservation inside the furnace body through gas combustion. However, during the combustion process, room temperature air is usually mixed with gas and then ignited by an igniter. In this case, the gas will burn unevenly, which is not conducive to the combustion reaction. Moreover, the flue gas during the combustion process is usually directly discharged, and the waste heat in the flue gas cannot be effectively recovered, resulting in a high temperature in the workshop and an unsafe and uncomfortable production environment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a gas-fired aluminum liquid heat preservation furnace for the production of gearbox rear covers, which can improve the combustion effect of gas, ensure heat supply, thereby achieving effective heat preservation of aluminum liquid and timely recovery of heat from flue gas during operation.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0005] A gas-fired aluminum liquid holding furnace for producing a gearbox rear cover includes a furnace body with an internal furnace cavity and a control cabinet located on one side of the furnace body. The control cabinet houses a control unit. A liquid inlet is located on the left side of the furnace body, and a liquid outlet is located on the right side. A combustion chamber is located at the center of the top of the furnace body, comprising a mixing chamber and a combustion chamber arranged vertically and connected sequentially. An air preheater is located at the top of the combustion chamber. The air inlet of the air preheater is connected to an air supply pipe, the air supply pipe inlet is connected to a blower, and the air outlet of the air preheater is connected to a preheated air supply pipe, which is connected to the mixing chamber. The mixing chamber is also connected to a gas supply pipe. The combustion chamber is connected to a heating chamber located outside the furnace cavity. The combustion chamber is connected to a flue gas exhaust pipe via a flue, which is connected to a flue gas treatment system and a waste heat recovery system. A first gas collecting hood is located above the liquid inlet, and a second gas collecting hood is located above the liquid outlet. The first and second gas collecting hoods are respectively connected to the waste heat recovery system via flue gas exhaust pipes.

[0006] The aforementioned gas-fired aluminum liquid heat preservation furnace for producing a gearbox rear cover is provided with a first flow meter and a first regulating valve on the gas delivery pipe. The output end of the first flow meter is connected to the input end of the control unit, and the controlled end of the first regulating valve is connected to the output end of the control unit.

[0007] The aforementioned gas-fired aluminum liquid heat preservation furnace for producing a gearbox rear cover is provided with a second regulating valve, a second flow meter, and a preheated air temperature detector on the preheated air delivery pipe. The controlled end of the second regulating valve is connected to the output end of the control unit, and the output ends of the second flow meter and the preheated air temperature detector are respectively connected to the input end of the control unit.

[0008] The aforementioned gas-fired aluminum liquid heat preservation furnace for producing a gearbox rear cover has a slag removal port on the rear side of the furnace body, and a slag removal port cover plate is also installed on the furnace body to seal the slag removal port during heat preservation.

[0009] The aforementioned gas-fired aluminum liquid heat preservation furnace for producing a gearbox rear cover has a first rotating seat on the left side of the rear side plate of the furnace body. The first rotating seat is rotatably connected to a slag skimming port cover plate via a rotating shaft. A locking plate is provided on the right side of the slag skimming port cover plate, and a slot is opened on the right side of the locking plate. A second rotating seat is provided on the right side of the rear side plate of the furnace body. The second rotating seat is connected to a screw via a rotating shaft. The screw is slidably connected to the slot, and a handle for pressing the locking plate is threaded onto the screw.

[0010] The aforementioned gas-fired aluminum liquid holding furnace for producing a gearbox rear cover has an inclined guide plate below the slag removal port to guide the slag material during slag removal.

[0011] The aforementioned gas-fired aluminum liquid holding furnace for producing a gearbox rear cover is equipped with an outlet temperature detector for detecting the temperature of the extracted aluminum liquid, and the output of the outlet temperature detector is connected to the input of the control unit.

[0012] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0013] This utility model provides a gas-fired aluminum liquid holding furnace for the production of gearbox rear covers. By setting up an air preheater to preheat the air before mixing it with gas, the combustion efficiency of the gas is improved, solving the problem of uneven combustion when mixing room temperature air and gas, and enabling better heating and heat preservation of aluminum liquid. By setting up a flue gas exhaust pipe to recover the flue gas during the combustion process, and treating the flue gas before sending it to the waste heat recovery system, the waste heat of the flue gas is effectively utilized, solving the problem of the workshop temperature rising due to the direct discharge of flue gas into the workshop. By setting up a first gas collection hood and a second gas collection hood, the heat loss at the liquid inlet, liquid outlet and slag removal port is effectively recovered, avoiding heat waste. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the specific structure of the present utility model; Figure 2 This is a schematic diagram of the specific structure of the rear side of this utility model; Figure 3This is a schematic diagram of the specific structure of the slag removal port cover of this utility model.

[0015] The components are: 1. Furnace body, 2. Combustion box, 3. Gas supply pipe, 4. Air supply pipe, 5. Air preheater, 6. Preheated air supply pipe, 7. First flow meter, 8. Second flow meter, 9. Preheated air temperature detector, 10. Flue gas exhaust pipe, 11. First gas collection hood, 12. Second gas collection hood, 13. Liquid inlet, 14. Liquid outlet, 15. Liquid outlet temperature detector, 16. Slag removal port, 17. Guide plate, 18. Slag removal port cover plate, 19. First rotating seat, 20. Locking plate, 21. Groove, 22. Second rotating seat, 23. Screw, 24. Handle. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] A gas-fired aluminum liquid holding furnace for the production of transmission rear covers, such as Figures 1 to 3 As shown, the furnace includes a furnace body 1 with an internal furnace cavity and a control cabinet located on one side of the furnace body 1. The control cabinet contains a control unit. A liquid inlet 13 is located on the left side of the furnace body 1, and a liquid outlet 14 is located on the right side of the furnace body 1. A combustion chamber 2 is located at the center of the top of the furnace body 1. The combustion chamber 2 includes a mixing chamber and a combustion chamber that are arranged vertically and connected in sequence.

[0018] An air preheater 5 is installed on the top of the combustion chamber 2. The air inlet of the air preheater 5 is connected to the air supply pipe 4, the air inlet of the air supply pipe 4 is connected to the blower, the air outlet of the air preheater 5 is connected to the preheated air supply pipe 6, the preheated air supply pipe 6 is connected to the mixing chamber, and the mixing chamber is also connected to the gas supply pipe 3.

[0019] A first flow meter 7 and a first regulating valve are installed on the gas transmission pipe 3. The output end of the first flow meter 7 is connected to the input end of the control unit, and the controlled end of the first regulating valve is connected to the output end of the control unit.

[0020] A second regulating valve, a second flow meter 8, and a preheated air temperature detector 9 are respectively installed on the preheated air delivery pipe 6. The controlled end of the second regulating valve is connected to the output end of the control unit, and the output ends of the second flow meter 8 and the preheated air temperature detector 9 are respectively connected to the input end of the control unit.

[0021] The combustion chamber is connected to the heating chamber located outside the furnace cavity of furnace body 1. An igniter is installed inside the combustion chamber. The controlled end of the igniter is connected to the output end of the control unit. The combustion chamber is also equipped with uniformly distributed nozzles. The igniter heats the gas mixture with preheated air and then sprays it into the heating chamber of the furnace body through the nozzles. The heat is transferred to the surface of the molten aluminum through thermal radiation.

[0022] The combustion chamber is connected to the flue gas exhaust pipe 10 via a flue, and the flue gas exhaust pipe is connected to the flue gas treatment system and the waste heat recovery system so as to recover and utilize the waste heat in the flue gas.

[0023] A first gas collection hood 11 is installed above the liquid inlet 13, and a second gas collection hood 12 is installed above the liquid outlet 14. The first gas collection hood 11 and the second gas collection hood 12 are respectively connected to the waste heat recovery system through the flue gas emission pipe 10.

[0024] A slag removal port 16 is provided on the rear side of the furnace body 1. A slag removal port cover plate 18 is also installed on the furnace body 1 to seal the slag removal port 16 during heat preservation. An inclined guide plate 17 is provided below the slag removal port 16 to guide the slag material during slag removal.

[0025] A first rotating seat 19 is provided on the left side of the rear side plate of the furnace body 1. The first rotating seat 19 is rotatably connected to the slag removal port cover plate 18 via a rotating shaft. A locking plate 20 is provided on the right side of the slag removal port cover plate 18. A slot 21 is opened on the right side of the locking plate 20. A second rotating seat 22 is provided on the right side of the rear side plate of the furnace body 1. A screw 23 is connected to the second rotating seat 22 via a rotating shaft. The screw 23 is slidably connected to the slot 21. A handle 24 is threadedly connected to the screw 23 for pressing the locking plate 20.

[0026] A liquid outlet temperature detector 15 is installed at the liquid outlet 14 to detect the temperature of the extracted aluminum liquid. The output terminal of the liquid outlet temperature detector 15 is connected to the input terminal of the control unit.

[0027] In this embodiment, the preheating air temperature detector 9 and the liquid outlet temperature detector 15 are thermocouple temperature detectors. In other embodiments, other types of temperature detectors known to those skilled in the art that can be used to detect the temperature of aluminum liquid may also be selected.

[0028] In use, air is sent into the air preheater by a blower for preheating, and then sent into the mixing chamber to mix with the gas. By adjusting the mixing ratio of preheated air and gas, the gas can be fully and effectively combusted. Specifically, the mixing ratio of preheated air and gas can be set by a regulating valve set on the preheated air delivery pipeline and a regulating valve set on the gas delivery pipeline in conjunction with a flow meter.

[0029] The mixed gas is burned by an igniter and then sent into the heating chamber through a nozzle to heat the furnace wall. The molten aluminum in the furnace is heated by thermal radiation, and the flue gas during the combustion process is recovered through a flue.

[0030] During use, the first gas collection hood can recover the heat dissipated at the liquid inlet when liquid is being fed in, and the second gas collection hood can recover the heat dissipated when liquid is being discharged or slag is being removed, thus avoiding the waste of heat dissipation. At the same time, the effective recovery of waste heat can also reduce the workshop temperature and create a comfortable working environment.

[0031] This utility model provides a gas-fired aluminum liquid holding furnace for the production of gearbox rear covers. By setting up an air preheater to preheat the air before mixing it with gas, the combustion efficiency of the gas is improved, solving the problem of uneven combustion when mixing room temperature air and gas, and enabling better heating and heat preservation of aluminum liquid. By setting up a flue gas exhaust pipe to recover the flue gas during the combustion process, and treating the flue gas before sending it to the waste heat recovery system, the waste heat of the flue gas is effectively utilized, solving the problem of the workshop temperature rising due to the direct discharge of flue gas into the workshop. By setting up a first gas collection hood and a second gas collection hood, the heat loss at the liquid inlet, liquid outlet and slag removal port is effectively recovered, avoiding heat waste.

Claims

1. A gas-fired aluminum liquid holding furnace for producing a gearbox rear cover, comprising a furnace body (1) with an internal furnace cavity and a control cabinet disposed on one side of the furnace body (1), wherein a control unit is disposed in the control cabinet, an inlet (13) is disposed on the left side of the furnace body (1), and an outlet (14) is disposed on the right side of the furnace body (1), characterized in that: A combustion chamber (2) is provided at the center of the top of the furnace body (1). The combustion chamber (2) includes a mixing chamber and a combustion chamber arranged vertically and connected in sequence. An air preheater (5) is provided at the top of the combustion chamber (2). The air inlet of the air preheater (5) is connected to an air supply pipe (4). The air inlet of the air supply pipe (4) is connected to a blower. The air outlet of the air preheater (5) is connected to a preheated air supply pipe (6). The preheated air supply pipe (6) is connected to the mixing chamber. The mixing chamber is also connected to a gas supply pipe. The feed pipe (3) is connected; the combustion chamber is connected to the heating chamber located outside the furnace cavity of the furnace body (1), the combustion chamber is connected to the flue gas discharge pipe (10) through the flue, and the flue gas discharge pipe is connected to the flue gas treatment system and the waste heat recovery system; a first gas collection hood (11) is provided above the liquid inlet (13), and a second gas collection hood (12) is provided above the liquid outlet (14). The first gas collection hood (11) and the second gas collection hood (12) are respectively connected to the waste heat recovery system through the flue gas discharge pipe (10).

2. The gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 1, characterized in that: The gas delivery pipe (3) is equipped with a first flow meter (7) and a first regulating valve. The output end of the first flow meter (7) is connected to the input end of the control unit, and the controlled end of the first regulating valve is connected to the output end of the control unit.

3. A gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 1, characterized in that: The preheated air delivery pipe (6) is equipped with a second regulating valve, a second flow meter (8) and a preheated air temperature detector (9). The controlled end of the second regulating valve is connected to the output end of the control unit, and the output ends of the second flow meter (8) and the preheated air temperature detector (9) are connected to the input end of the control unit.

4. A gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 1, characterized in that: The furnace body (1) is provided with a slag removal port (16) on the rear side, and a slag removal port cover plate (18) is also installed on the furnace body (1) to seal the slag removal port (16) during heat preservation.

5. A gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 4, characterized in that: The furnace body (1) has a first rotating seat (19) on the left side of the rear side plate. The first rotating seat (19) is rotatably connected to the slag removal port cover plate (18) via a rotating shaft. The slag removal port cover plate (18) has a locking plate (20) on the right side. The locking plate (20) has a slot (21) on the right side. The furnace body (1) has a second rotating seat (22) on the right side of the rear side plate. The second rotating seat (22) is connected to a screw (23) via a rotating shaft. The screw (23) is slidably connected to the slot (21). The screw (23) is threadedly connected to a handle (24) for pressing the locking plate (20).

6. A gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 4, characterized in that: Below the slag removal port (16) is an inclined guide plate (17) that guides the slag material during slag removal.

7. A gas-fired aluminum liquid holding furnace for producing a transmission rear cover according to claim 1, characterized in that: A liquid outlet temperature detector (15) is provided at the liquid outlet (14) to detect the temperature of the extracted aluminum liquid. The output end of the liquid outlet temperature detector (15) is connected to the input end of the control unit.

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