Casting hearth of heat treatment furnace

Abstract

The utility model relates to the technical field of hearths, and discloses a casting hearth of a heat treatment furnace, which comprises a hearth body, the rear end of the hearth body is fixedly connected with a rear cover, the inner side of the hearth body is provided with a conical groove, and a ventilation pipeline is movably arranged in the hearth body. A gas injection nozzle is fixedly connected to the inner side of the ventilation pipeline, a first belt wheel is fixedly connected to one end of the ventilation pipeline, the front end of the hearth body is sleeved with a front cover, and a second sliding rail is installed in the hearth body. According to the casting hearth of the heat treatment furnace, the ventilation pipelines are installed in the hearth body at equal intervals, meanwhile, the ventilation pipelines are controlled to rotate synchronously, namely, the angles of the gas injection nozzles in the conical grooves can be adjusted synchronously, and after the angles of the gas injection nozzles are adjusted, gas is driven to form a circular track in the hearth body; therefore, the fuel heating efficiency is ensured, and the heat treatment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of furnace technology, specifically to a casting furnace for a heat treatment furnace. Background Technology

[0002] The furnace is a three-dimensional space enclosed by furnace walls for fuel combustion. The furnace's function is to ensure the fuel burns as completely as possible and to cool the flue gas temperature at the furnace outlet to a level permissible for safe operation of the convective heating surfaces. Therefore, the furnace should have sufficient volume and be able to accommodate a sufficient number of heating surfaces. The furnace should also have a reasonable shape and size to facilitate coordination with the burners, organize the aerodynamic field within the furnace, prevent the flame from adhering to or impinging on the walls, ensure high flame density, and maintain uniform heat load on the walls.

[0003] In conventional casting furnaces, materials are placed inside the furnace and sealed before fuel is injected. To ensure complete combustion, oxygen is continuously injected into the furnace. However, to maintain stable oxygen delivery, the direction of oxygen delivery is fixed. This results in oxygen contacting and burning with the outer fuel, making it difficult to control the injection of oxygen into the fuel. Consequently, the injected fuel cannot burn completely, affecting heat treatment efficiency. Therefore, we propose a casting furnace design for heat treatment furnaces. Utility Model Content

[0004] To address the shortcomings of existing casting furnaces in heat treatment furnaces, this invention provides a casting furnace for a heat treatment furnace, featuring an injection nozzle positioned inside a conical groove. The angle of the injection nozzle is adjustable. By changing the injection nozzle, the gas is guided along a circular trajectory during its transmission within the furnace body. This controls the circular motion of the injected fuel, improving the sufficiency of fuel-air contact and thus enhancing the completeness of fuel combustion. This solves the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a casting furnace chamber for a heat treatment furnace, comprising a furnace chamber body, a rear cover fixedly connected to the rear end of the furnace chamber body, a conical groove opened on the inner side of the furnace chamber body, a ventilation pipe movably installed inside the furnace chamber body, an injection nozzle fixedly connected to the inner side of the ventilation pipe, a first pulley fixedly connected to one end of the ventilation pipe, a front cover sleeved on the front end of the furnace chamber body, a second slide rail installed inside the furnace chamber body, a positioning bracket sleeved on the upper part of the second slide rail, and a placement frame fixedly connected to the upper part of the positioning bracket.

[0006] Preferably, a limiting sleeve is installed in the middle of the rear cover, and a burner is installed inside the limiting sleeve, while the burner extends into the interior of the furnace body.

[0007] Preferably, the conical groove is conical and is arranged at equal intervals on the inner side of the furnace body, and the gas injection nozzle extends into the interior of the conical groove.

[0008] Preferably, a second pulley is installed at the rear end of the furnace body and between the two sets of first pulleys. A belt is sleeved on the outside of the first and second pulleys. A motor is installed on the outside of one set of second pulleys. A gas duct passes through the first pulley and is equipped with a gas injection device.

[0009] Preferably, an exhaust pipe is installed inside the front end of the furnace body, and the exhaust pipe penetrates the interior of the furnace body.

[0010] Preferably, a first slide rail is fixedly connected to the lower part of the furnace body, and a slide rod is fixedly connected to the lower part of the front cover, with the slide rod sleeved inside the first slide rail.

[0011] Preferably, a connecting rod is installed between the front cover and the positioning bracket, and a conical groove is opened inside the frame, and a crucible is placed inside the conical groove.

[0012] Compared with the casting furnace of existing heat treatment furnaces, this utility model has the following advantages:

[0013] 1. The casting furnace chamber of this heat treatment furnace is installed inside the furnace body at equal intervals through air pipes. At the same time, the air pipes are controlled to rotate synchronously, that is, the angle of the air injection nozzle inside the conical groove can be adjusted synchronously. After the angle of the air injection nozzle is adjusted, it drives the gas to form a circular trajectory inside the furnace body. That is, when the heating device heats the material, it ensures the fuel heating efficiency, thereby improving the heat treatment efficiency.

[0014] 2. The casting chamber of this heat treatment furnace is set at the front end of the furnace body via a front cover. At the same time, the sliding rod is sleeved inside the first slide rail to ensure the stability of the front cover when adjusting its position at the front end of the furnace body. Simultaneously, the front cover moves the positioning bracket to adjust its position, and the placement frame carrying the crucible is positioned to limit its position. That is, during the placement of the crucible, the movement of the front cover moves the crucible in sync with its movement, avoiding the need for workers to use crucible tongs to reach into the furnace body to retrieve the crucible later, which could lead to safety hazards. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the present utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the main body of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the gas conveying device of this utility model;

[0018] Figure 4 This is a schematic diagram of the present invention without a front cover structure;

[0019] Figure 5 This is a side view sectional structural diagram of the main body of this utility model;

[0020] Figure 6 This is a cross-sectional view of the back cover of this utility model.

[0021] In the diagram: 1. Furnace body; 2. Rear cover; 3. Limiting sleeve; 4. Conical groove; 5. Ventilation pipe; 6. Gas injection nozzle; 7. First pulley; 8. Second pulley; 9. Belt; 10. First slide rail; 11. Front cover; 12. Slide rod; 13. Second slide rail; 14. Positioning bracket; 15. Placement frame; 16. Exhaust pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A casting furnace chamber for a heat treatment furnace includes a furnace body 1. A rear cover 2 is fixedly connected to the rear end of the furnace body 1, protecting the rear end of the furnace body 1. A conical groove 4 is formed on the inner side of the furnace body 1, limiting the movement trajectory of an injection nozzle 6. A ventilation pipe 5 is movably installed inside the furnace body 1. When the ventilation pipe 5 rotates, it drives the injection nozzle 6 to rotate. The injection nozzle 6 is fixedly connected to the inner side of the ventilation pipe 5, injecting oxygen into the interior of the furnace body 1. A first pulley 7 is fixedly connected to one end of the ventilation pipe 5. When the first pulley 7 rotates... When in motion, the first pulley 7 drives the ventilation pipe 5 to rotate synchronously. The front end of the furnace body 1 is fitted with a front cover 11. During the back-and-forth movement of the front cover 11, the slide rod 12 can be fitted inside the first slide rail 10 to ensure the stability of the first slide rail 10 when adjusting its position. The furnace body 1 is equipped with a second slide rail 13. The upper part of the second slide rail 13 is fitted with a positioning bracket 14. The upper part of the positioning bracket 14 is fixedly connected to a placement frame 15. During the back-and-forth adjustment of the front cover 11, the position of the placement frame 15 is adjusted, that is, during the heat treatment of materials, the phenomenon of burns is avoided when placing raw materials.

[0024] refer to Figure 2 A limiting sleeve 3 is installed in the middle of the rear cover 2. A burner is installed inside the limiting sleeve 3 and extends into the furnace body 1. By setting the burner inside the limiting sleeve 3 and starting the burner, fuel can be injected into the front end. After the fuel is injected into the furnace body 1, it will burn and heat the inside of the furnace body 1. At the same time, when the equipment is heat-treated, after the casting material is placed inside the furnace body 1, the burner can heat and melt the casting material.

[0025] refer to Figure 5 The conical groove 4 is conical and is arranged at equal intervals on the inner side of the furnace body 1. The gas injection nozzle 6 extends into the interior of the conical groove 4. The conical groove 4 is conical, and the gas injection nozzle 6 is fitted inside the conical groove 4. Because the conical groove 4 is conical, the gas injection nozzle 6 can move to different positions inside the conical groove 4. By adjusting the position of the gas injection nozzle 6, the direction of hot gas transmission can be controlled. By controlling the direction of gas transmission, the combustion trajectory of the fire line can be adjusted to achieve circular combustion, thereby improving the contact efficiency between fuel and air and thus improving the combustion efficiency.

[0026] refer to Figure 6 A second pulley 8 is installed at the rear end of the furnace body 1 and between the two sets of first pulleys 7. A belt 9 is sleeved on the outside of the first pulley 7 and the second pulley 8. A motor is installed on the outside of one set of second pulleys 8. At the same time, the air pipe 5 passes through the first pulley 7 and is equipped with an air injection device. When the motor installed on the outside of the second pulley 8 is started, the motor controls the second pulley 8 to rotate. The belt 9 is used to drive the first pulley 7 to rotate synchronously. That is, when the angle of the air injection nozzle 6 is adjusted inside the conical groove 4, the synchronization is maintained.

[0027] refer to Figure 1 An exhaust pipe 16 is installed inside the front end of the furnace body 1. The exhaust pipe 16 penetrates the interior of the furnace body 1 and is located at the front end of the furnace body 1. When the equipment is sealed, the gas generated after combustion can be discharged through the exhaust pipe 16.

[0028] refer to Figure 2 The lower part of the furnace body 1 is fixedly connected to a first slide rail 10, and the lower part of the front cover 11 is fixedly connected to a slide rod 12. The slide rod 12 is sleeved inside the first slide rail 10 and is set at the front end of the furnace body 1 through the front cover 11. The front cover 11 drives the slide rod 12 to extend and install inside the first slide rail 10. That is, the first slide rail 10 limits the movement trajectory of the slide rod 12 and maintains stability during the adjustment of the position of the first slide rail 10.

[0029] refer to Figure 2A connecting rod is installed between the front cover 11 and the positioning bracket 14. A conical groove is opened inside the placement frame 15, and a crucible is placed inside the conical groove. The positioning bracket 14 is set at the front end of the front cover 11 and is located inside the second slide rail 13. During the adjustment of the position of the front cover 11, the second slide rail 13 can adjust the position of the placement frame 15. During the placement of the crucible, the crucible can be placed inside the placement frame 15. After the crucible is pushed into the furnace body 1, the first slide rail 10 can seal the front end of the furnace body 1 to improve the heating effect of the equipment inside the crucible.

[0030] Working principle: During use, the raw material to be cast is placed inside the crucible, and the front cover 11 is opened. The two sets of positioning brackets 14 of the front cover 11 extend to the outside of the furnace body 1. The crucible is placed inside the placement frame 15 and pushed to move into the furnace body 1. The front cover 11 can seal the inside of the furnace body 1. Fuel is injected into the furnace body 1 through the burner installed inside the limiting sleeve 3, and the first pulley 7 is controlled to rotate. The first pulley 7 drives the air pipe 5 to rotate, that is, the angle of the air injection nozzle 6 inside the conical groove 4 is adjusted. After the angle of the air injection nozzle 6 is adjusted, the air pipe 5 drives the air to be transported into the furnace body 1. The air provides air for the combustion of the burner, and the multiple sets of air injection nozzles 6 drive the gas to rotate in a circle inside the furnace body 1. That is, when the fuel is burning, the flow can be improved, thereby improving the combustion effect.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A casting furnace chamber for a heat treatment furnace, comprising a furnace chamber body (1), wherein a rear cover (2) is fixedly connected to the rear end of the furnace chamber body (1), and a conical groove (4) is formed on the inner side of the furnace chamber body (1), characterized in that: A ventilation pipe (5) is movably installed inside the furnace body (1). An injection nozzle (6) is fixedly connected to the inner side of the ventilation pipe (5). A first pulley (7) is fixedly connected to one end of the ventilation pipe (5). A front cover (11) is sleeved on the front end of the furnace body (1). A second slide rail (13) is installed inside the furnace body (1). A positioning bracket (14) is sleeved on the upper part of the second slide rail (13). A placement frame (15) is fixedly connected to the upper part of the positioning bracket (14).

2. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: A limiting sleeve (3) is installed in the middle of the rear cover (2), and a burner is installed inside the limiting sleeve (3), while the burner extends into the interior of the furnace body (1).

3. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: The conical groove (4) is conical and is arranged at equal intervals on the inner side of the furnace body (1), and the gas injection nozzle (6) extends into the interior of the conical groove (4).

4. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: A second pulley (8) is installed at the rear end of the furnace body (1) and between the two sets of first pulleys (7). At the same time, a belt (9) is sleeved on the outside of the first pulley (7) and the second pulley (8). A motor is installed on the outside of one set of the second pulleys (8). At the same time, the air pipe (5) passes through the first pulley (7) and is equipped with an air injection device.

5. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: An exhaust pipe (16) is installed inside the front end of the furnace body (1), and the exhaust pipe (16) penetrates the interior of the furnace body (1).

6. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: The lower part of the furnace body (1) is fixedly connected to a first slide rail (10), and the lower part of the front cover (11) is fixedly connected to a slide rod (12), which is sleeved inside the first slide rail (10).

7. The casting furnace chamber of a heat treatment furnace according to claim 1, characterized in that: A connecting rod is installed between the front cover (11) and the positioning bracket (14), and a conical groove is opened inside the placement frame (15), and a crucible is placed inside the conical groove.

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