Automatic furnace pressure adjusting device for fuel gas aluminum melting furnace

Abstract

The utility model discloses an automatic furnace pressure adjusting device for a fuel gas aluminum melting furnace, which comprises an aluminum melting furnace material tower smoke hood, a pressure adjusting mechanism and a mounting structure, and the upper end of the aluminum melting furnace material tower smoke hood is connected with the pressure adjusting mechanism for controlling the internal pressure of the aluminum melting furnace. The bottom end of the aluminum melting furnace material tower smoke hood is connected with an installation structure used for being in butt joint with an aluminum melting furnace, and the pressure adjusting mechanism comprises a pressure sensor, a PLC, a lifting lug, an exhaust assembly and a control assembly. According to the automatic furnace pressure adjusting device for the fuel gas aluminum melting furnace, the pressure adjusting mechanism is arranged, the turning plate is arranged in the smoke hood of the aluminum melting furnace material tower and can seal the top end of the smoke hood of the aluminum melting furnace material tower, and meanwhile the pressure sensor and the PLC judge the pressure in the smoke hood of the aluminum melting furnace material tower; and the turning plate is controlled by the PLC to close the second gas guide pipe, so that the purpose of controlling the internal pressure of the smoke hood of the aluminum melting furnace charge tower can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-fired aluminum melting furnaces, in particular to an automatic furnace pressure regulating device for gas-fired aluminum melting furnaces. Background Art

[0002] A gas-fired aluminum melting furnace is a device used to melt aluminum, usually using natural gas or liquefied petroleum gas as fuel. This type of furnace is often used in industrial production, especially in the field of aluminum alloy production and casting. A gas-fired aluminum melting furnace generates high temperatures by burning gas to heat aluminum or aluminum alloy to a molten state for subsequent processing or casting.

[0003] For example, a Chinese utility model patent (CN210220647U) discloses an automatic pressure regulating device for a gas-fired aluminum melting furnace, which records: "Most of the existing pressure regulating devices for gas-fired aluminum melting furnaces are complex in structure and have a high installation cost, which is not practical. Therefore, it is urgent to design an automatic pressure regulating device for a gas-fired aluminum melting furnace", and also records: "The utility model realizes the control of the air pressure in the outer shell through the cooperation of the sealing plate, the first air port, the air pressure sensor and the closing plate. When the air pressure in the outer shell reaches a certain value, the air pressure will overcome the gravity of the closing plate and lift the closing plate. There is a gap between the closing plate and the sealing plate, and the gas flows out from the gap. When the air pressure drops to a suitable vertical position, the air pressure is not enough to overcome the gravity of the closing plate and lift the closing plate. At this time, under the action of the closing plate's own gravity, the closing plate is again against the inner wall of the bottom of the second air port, and the first air port and the air pressure sensor are closed, thereby ensuring the constancy of the air pressure in the outer shell. While the structure is simple, it will not be affected by high temperature and has strong practicality." Technical problems.

[0004] In summary, the device still has the following technical problems: since the combustion conditions inside the smoke hood of the aluminum melting furnace charge tower will change according to the production load and the operating skills of the workers, and the internal pressure will change to a certain extent when melting aluminum according to the amount of materials and the operating proficiency, the above-mentioned device directly discharges the pressure after it is generated inside the smoke hood of the aluminum melting furnace charge tower, so that the internal pressure is always maintained at a certain value, which will lead to a smaller scope of application of the device as a whole. For this reason, it is necessary to propose an automatic pressure regulating device for a gas-fired aluminum melting furnace, so as to provide a new technical solution to solve the technical problems mentioned in the above-mentioned patent. Utility Model Content

[0005] Based on this, it is necessary to provide an automatic furnace pressure regulating device for a gas-fired aluminum melting furnace to address the above-mentioned technical problems. By setting a pressure regulating mechanism, a flap is set inside the smoke hood of the aluminum melting furnace charge tower to close the top of the smoke hood of the aluminum melting furnace charge tower. At the same time, the pressure sensor and the PLC controller judge the pressure inside the smoke hood of the aluminum melting furnace charge tower. The PLC controller controls the closure of the second air duct by the flap, thereby achieving the purpose of controlling the internal pressure of the smoke hood of the aluminum melting furnace charge tower.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The invention discloses an automatic pressure regulating device for a gas-fired aluminum melting furnace, which is applied to the pressure control of the aluminum melting furnace.

[0008] The automatic pressure regulating device for a gas-fired aluminum melting furnace specifically includes an aluminum melting furnace charge tower smoke hood, which is characterized in that it also includes a pressure regulating mechanism and a mounting structure, wherein the upper end of the aluminum melting furnace charge tower smoke hood is connected to a pressure regulating mechanism for controlling the internal pressure of the aluminum melting furnace, and the bottom end of the aluminum melting furnace charge tower smoke hood is connected to a mounting structure for docking with the aluminum melting furnace;

[0009] The pressure regulating mechanism includes a pressure sensor, a PLC controller, a lifting lug, an exhaust component and a control component. The middle part of the aluminum melting furnace charge tower smoke hood is fixedly connected with the pressure sensor, the surface of the aluminum melting furnace charge tower smoke hood is fixedly connected with the PLC controller, and the surface of the aluminum melting furnace charge tower smoke hood is symmetrically fixedly connected with the lifting lugs.

[0010] As a preferred embodiment of the automatic furnace pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model, the exhaust assembly includes an air outlet, a first air duct, a second air duct and a third air duct. The top surface of the aluminum melting furnace charge tower smoke hood is provided with an air outlet, the top of the aluminum melting furnace charge tower smoke hood is fixedly connected to the first air duct, the end of the first air duct away from the aluminum melting furnace charge tower smoke hood is flange-connected to the second air duct, and the end of the second air duct away from the first air duct is flange-connected to the third air duct.

[0011] As a preferred embodiment of the automatic furnace pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model, the control component includes a shaft, a bearing and a flap, the shaft is rotatably connected to the middle part of the connecting rod, one end of the shaft is fixedly connected to the bearing, the bearing is fixedly connected to the middle part of the air outlet, the surface of the shaft is fixedly connected to the flap, and the flap is arranged in the middle part of the air outlet.

[0012] As a preferred embodiment of the automatic furnace pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model, the mounting structure includes a connecting frame, a connecting rod and a fixed frame, the bottom surface of the smoke hood of the aluminum melting furnace charge tower is fixedly connected to the connecting frame, the bottom surface of the connecting frame is fixedly connected to the connecting rod, and the end of the connecting rod away from the connecting frame is fixedly connected to the fixed frame.

[0013] As a preferred implementation of the automatic furnace pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model, the number of the connecting rods is four, and the four connecting rods are symmetrically connected to the four corners of the bottom of the connecting frame.

[0014] As a preferred embodiment of the automatic pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model, the smoke hood of the aluminum melting furnace charge tower is a quadrilateral cone, and the pressure sensor and the PLC controller are arranged on the inclined surface of the smoke hood of the aluminum melting furnace charge tower.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides an automatic furnace pressure regulating device for a gas-fired aluminum melting furnace. By arranging a pressure regulating mechanism, a flap is arranged inside the fume hood of the aluminum melting furnace charge tower to close the top of the fume hood of the aluminum melting furnace charge tower. At the same time, a pressure sensor and a PLC controller judge the pressure inside the fume hood of the aluminum melting furnace charge tower. The PLC controller controls the closure of the second air duct by the flap, thereby achieving the purpose of controlling the pressure inside the fume hood of the aluminum melting furnace charge tower.

[0017] The utility model provides an automatic furnace pressure regulating device for a gas-fired aluminum melting furnace. By arranging a mounting structure and sleeved on the surface of the aluminum melting furnace through a fixed frame, the aluminum melting furnace charge tower smoke hood and the aluminum melting furnace body can be connected. The internal pressure of the aluminum melting furnace can be controlled by closing the aluminum melting furnace with the aluminum melting furnace charge tower smoke hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the automatic pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model;

[0020] Figure 2 A schematic diagram of the structure of the installation structure of the automatic pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model;

[0021] Figure 3A schematic diagram of the structure of the pressure regulating mechanism of the automatic pressure regulating device for a gas-fired aluminum melting furnace provided by the utility model;

[0022] Figure 4 The utility model is a schematic diagram of the internal structure of the pressure regulating mechanism of the automatic furnace pressure regulating device for a gas-fired aluminum melting furnace.

[0023] The markings in the figure are as follows:

[0024] 1. Aluminum melting furnace charge tower smoke hood; 2. Pressure regulating mechanism; 3. Installation structure; 4. Pressure sensor; 5.

[0025] PLC controller; 6. Lifting ear; 7. Air outlet; 8. First air duct; 9. Second air duct; 10. Third air duct; 13. Shaft; 14. Bearing; 15. Flap; 16. Connecting frame; 17. Connecting rod; 18. Fixed frame. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] As described in the background technology, the combustion conditions inside the smoke hood of the aluminum melting furnace charge tower will change according to the production load and the operating skills of the workers, and the internal pressure will change to a certain extent according to the amount of materials and the operating proficiency during aluminum melting. The above-mentioned device directly discharges the pressure after it is generated inside the smoke hood of the aluminum melting furnace charge tower, so that the internal pressure is always maintained at a certain value, which will lead to a smaller scope of application of the overall device.

[0028] In order to solve this technical problem, the utility model provides a furnace pressure automatic regulating device for a gas-fired aluminum melting furnace, which is applied to the pressure control of the aluminum melting furnace.

[0029] Specifically, please refer to Figure 1-Figure 4 The automatic pressure regulating device for a gas-fired aluminum melting furnace specifically comprises an aluminum melting furnace charge tower smoke hood 1, a pressure regulating mechanism 2 and a mounting structure 3. The upper end of the aluminum melting furnace charge tower smoke hood 1 is connected with the pressure regulating mechanism 2 for controlling the internal pressure of the aluminum melting furnace, and the bottom end of the aluminum melting furnace charge tower smoke hood 1 is connected with the mounting structure 3 for docking with the aluminum melting furnace;

[0030] The pressure regulating mechanism 2 includes a pressure sensor 4, a PLC controller 5, a lifting lug 6, an exhaust component and a control component. The middle part of the aluminum melting furnace charge tower smoke hood 1 is fixedly connected with the pressure sensor 4, the surface of the aluminum melting furnace charge tower smoke hood 1 is fixedly connected with the PLC controller 5, and the surface of the aluminum melting furnace charge tower smoke hood 1 is symmetrically fixedly connected with the lifting lug 6.

[0031] The utility model provides an automatic furnace pressure regulating device for a gas-fired aluminum melting furnace. By setting a pressure regulating mechanism 2, a flap 15 is arranged inside the aluminum melting furnace charge tower smoke hood 1 to close the top of the aluminum melting furnace charge tower smoke hood 1. At the same time, a pressure sensor 4 and a PLC controller 5 judge the pressure inside the aluminum melting furnace charge tower smoke hood 1. The PLC controller 5 controls the flap 15 to close the second air duct 9, thereby achieving the purpose of controlling the internal pressure of the aluminum melting furnace charge tower smoke hood 1.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] Embodiment 1:

[0034] Please refer to Figure 1-Figure 2 , an automatic furnace pressure regulating device for a gas-fired aluminum melting furnace, comprising an aluminum melting furnace charge tower smoke hood 1, a pressure regulating mechanism 2 and a mounting structure 3, wherein the upper end of the aluminum melting furnace charge tower smoke hood 1 is connected with the pressure regulating mechanism 2 for controlling the internal pressure of the aluminum melting furnace, and the bottom end of the aluminum melting furnace charge tower smoke hood 1 is connected with the mounting structure 3 for docking with the aluminum melting furnace;

[0035] The pressure regulating mechanism 2 includes a pressure sensor 4, a PLC controller 5, a lifting lug 6, an exhaust component and a control component. The middle part of the aluminum melting furnace charge tower smoke hood 1 is fixedly connected with the pressure sensor 4, the surface of the aluminum melting furnace charge tower smoke hood 1 is fixedly connected with the PLC controller 5, and the surface of the aluminum melting furnace charge tower smoke hood 1 is symmetrically fixedly connected with the lifting lug 6.

[0036] Specifically, the mounting structure 3 includes a connecting frame 16, a connecting rod 17 and a fixed frame 18. The bottom surface of the aluminum melting furnace charge tower smoke hood 1 is fixedly connected to the connecting frame 16, the bottom surface of the connecting frame 16 is fixedly connected to the connecting rod 17, and the end of the connecting rod 17 away from the connecting frame 16 is fixedly connected to the fixed frame 18.

[0037] Specifically, there are four connecting rods 17 , and the four connecting rods 17 are symmetrically connected to the four corners of the bottom of the connecting frame 16 .

[0038] Specifically, the aluminum melting furnace charge tower smoke hood 1 is a quadrilateral cone, and the pressure sensor 4 and the PLC controller 5 are arranged on the inclined surface of the aluminum melting furnace charge tower smoke hood 1.

[0039] Through the above structural design, when the device is used, the aluminum melting furnace charge tower smoke hood 1 is first mounted on the surface of the aluminum melting furnace through the fixing frame 18, the connecting rod 17 is in contact with the surface of the aluminum melting furnace, and the connecting frame 16 is tightly attached to the top surface of the aluminum melting furnace.

[0040] Embodiment 2:

[0041] The automatic pressure regulating device for a gas-fired aluminum melting furnace provided in Example 1 is further optimized. Specifically, Figure 2-Figure 4 As shown, the exhaust assembly includes an air outlet 7, a first air duct 8, a second air duct 9 and a third air duct 10. The top surface of the aluminum-melting furnace charge tower fume hood 1 is provided with an air outlet 7, the top of the aluminum-melting furnace charge tower fume hood 1 is fixedly connected with the first air duct 8, the end of the first air duct 8 away from the aluminum-melting furnace charge tower fume hood 1 is flange-connected with the second air duct 9, and the end of the second air duct 9 away from the first air duct 8 is flange-connected with the third air duct 10.

[0042] Specifically, the control component includes a shaft 13, a bearing 14 and a flap 15. The shaft 13 is rotatably connected to the middle of the connecting rod 17. One end of the shaft 13 is fixedly connected to the bearing 14. The bearing 14 is fixedly connected to the middle of the air outlet 7. The surface of the shaft 13 is fixedly connected to the flap 15. The flap 15 is arranged in the middle of the air outlet 7.

[0043] Through the above-mentioned structural design, when the aluminum melting furnace is melting aluminum, pressure is generated inside the fume hood 1 of the aluminum melting furnace charge tower. When the pressure is too high, the pressure sensor 4 transmits the pressure signal to the PLC controller 5 to judge the difference with the preset pressure. If the pressure inside the fume hood 1 of the aluminum melting furnace charge tower is greater than the preset value, the PLC controller 5 controls the shaft 13 to rotate, and the shaft 13 drives the flap 15 to rotate in the middle of the first air duct 8, so that the exhaust channel composed of the first air duct 8, the second air duct 9 and the third air duct 10 is opened, thereby completing the pressure release inside the fume hood 1 of the aluminum melting furnace charge tower.

Claims

1. An automatic pressure regulating device for a gas-fired aluminum melting furnace, comprising an aluminum melting furnace charge tower hood (1), characterized in that: It also comprises a pressure regulating mechanism (2) and a mounting structure (3), wherein the upper end of the aluminum melting furnace charge tower smoke hood (1) is connected to the pressure regulating mechanism (2) for controlling the internal pressure of the aluminum melting furnace, and the lower end of the aluminum melting furnace charge tower smoke hood (1) is connected to the mounting structure (3) for docking with the aluminum melting furnace; The pressure regulating mechanism (2) comprises a pressure sensor (4), a PLC controller (5), a lifting lug (6), an exhaust component and a control component; the middle of the aluminum melting furnace charge tower smoke hood (1) is fixedly connected to the pressure sensor (4); the surface of the aluminum melting furnace charge tower smoke hood (1) is fixedly connected to the PLC controller (5); and the surface of the aluminum melting furnace charge tower smoke hood (1) is symmetrically fixedly connected to the lifting lug (6).

2. The automatic pressure regulating device for a gas-fired aluminum melting furnace according to claim 1 is characterized in that: The exhaust assembly comprises an air outlet (7), a first air duct (8), a second air duct (9) and a third air duct (10); the top surface of the aluminum melting furnace charge tower fume hood (1) is provided with an air outlet (7); the top end of the aluminum melting furnace charge tower fume hood (1) is fixedly connected to the first air duct (8); one end of the first air duct (8) away from the aluminum melting furnace charge tower fume hood (1) is flange-connected to the second air duct (9); and one end of the second air duct (9) away from the first air duct (8) is flange-connected to the third air duct (10).

3. The automatic pressure regulating device for a gas-fired aluminum melting furnace according to claim 2 is characterized in that: The control assembly comprises a shaft (13), a bearing (14) and a flap (15); the shaft (13) is rotatably connected to the middle of the connecting rod (17); one end of the shaft (13) is fixedly connected to the bearing (14); the bearing (14) is fixedly connected to the middle of the air outlet (7); the surface of the shaft (13) is fixedly connected to the flap (15); and the flap (15) is arranged in the middle of the air outlet (7).

4. The automatic pressure regulating device for a gas-fired aluminum melting furnace according to claim 3 is characterized in that: The mounting structure (3) comprises a connecting frame (16), a connecting rod (17) and a fixing frame (18); the bottom surface of the aluminum melting furnace charge tower smoke hood (1) is fixedly connected to the connecting frame (16); the bottom surface of the connecting frame (16) is fixedly connected to the connecting rod (17); and one end of the connecting rod (17) away from the connecting frame (16) is fixedly connected to the fixing frame (18).

5. The automatic pressure regulating device for a gas-fired aluminum melting furnace according to claim 4 is characterized in that: The number of the connecting rods (17) is four, and the four connecting rods (17) are symmetrically connected to the four corners of the bottom of the connecting frame (16).

6. The automatic pressure regulating device for a gas-fired aluminum melting furnace according to claim 1 is characterized in that: The aluminum melting furnace charge tower smoke hood (1) is in the shape of a quadrilateral cone, and the pressure sensor (4) and the PLC controller (5) are arranged on the inclined surface of the aluminum melting furnace charge tower smoke hood (1).

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