Side opening door type heat treatment furnace for long casting

Abstract

The utility model belongs to the technical field of casting process, and discloses a heat treatment furnace of a side-opening door type long casting, which comprises a heating furnace, a side-opening door placing bin is fixedly connected to the bottom end of the heating furnace, and a placing platform is slidably connected to the inner bottom end of the side-opening door placing bin. A plurality of guide plates are fixedly connected to the top end of the interior of the heating furnace, a plurality of air pumps are installed at the top end of the inner wall of the heating furnace in an embedded mode, the output ends of the air pumps are fixedly connected with the same air outlet pipe, the bottom end of the air outlet pipe is connected with a four-way pipe in a sleeved mode, and a plurality of first air distribution pipes are connected into the four-way pipe in an embedded mode. A plurality of atomizing nozzles are connected to one surface of the gas distributing pipe in an embedded mode, air in the heating furnace is driven by the gas pump to circulate, heat in the heating furnace is distributed more evenly, then the problem that a rectangular casting in the heating furnace is heated unevenly is avoided, and therefore the quality of the long casting after heat treatment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of casting technology, and in particular relates to a heat treatment furnace for side-opening long castings. Background Technology

[0002] Heat treatment is an important process in metal processing, widely used in machinery manufacturing, chemical industry and other fields. For the heat treatment of long castings, large furnaces are usually required to improve production efficiency and product quality;

[0003] However, when using traditional side-opening long casting heat treatment furnaces, the castings to be heat-treated are placed inside the furnace. Because the temperature inside the furnace flows from low to high, the castings after heat treatment will have uneven heating, with the top castings being overheated and the bottom castings being unevenly heated. This affects the quality of the long castings after heat treatment and reduces the effectiveness of the heat treatment process. Utility Model Content

[0004] This invention addresses the problem in existing technologies where, by placing the casting to be heat-treated inside a heat treatment furnace, the temperature inside the furnace flows from low to high, causing uneven heating of the castings at the top and bottom, thus affecting the quality of elongated castings after heat treatment and reducing the effectiveness of the heat treatment process. The following technical solution is proposed:

[0005] A heat treatment furnace for side-opening elongated castings includes: a heating furnace, a side-opening placement chamber fixedly connected to the bottom of the heating furnace, a placement platform slidably connected to the bottom of the side-opening placement chamber, several guide plates fixedly connected to the top of the interior of the heating furnace, multiple air pumps embedded in the top of the inner wall of the heating furnace, the output ends of the multiple air pumps fixedly connected to the same air outlet pipe, a four-way pipe sleeved to the bottom of the air outlet pipe, multiple gas distribution pipes I embedded in the four-way pipe, a three-way pipe sleeved to the bottom of one of the gas distribution pipes I, multiple gas distribution pipes II embedded in the three-way pipe, and multiple atomizing nozzles embedded in the surfaces of both the gas distribution pipe I and the gas distribution pipe II.

[0006] As a preferred embodiment of the above technical solution, the number of air pumps is set to four rows, with each row consisting of five air pumps, and the four rows of air pumps are evenly distributed on the inner walls of the four ends of the heating furnace.

[0007] As a preferred embodiment of the above technical solution, the placement platform is slidably connected with multiple limiting rods, and all of the multiple limiting rods are fixedly connected to the inside of the heating furnace.

[0008] As a preferred embodiment of the above technical solution, two mounting seats are provided below each atomizing nozzle. Both mounting seats are fixedly connected to the inner wall of the heating furnace. A baffle is installed on the opposite end face of the two mounting seats. Bolts are threadedly connected to the inside of both the mounting seats and the baffles.

[0009] As a preferred embodiment of the above technical solution, both the first and second air outlet pipes are made of ceramic material.

[0010] As a preferred embodiment of the above technical solution, the number of guide plates is set to multiple, and the multiple guide plates are simultaneously tilted toward the middle position of the top of the heating furnace.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) By using an air pump to circulate the air inside the heating furnace, the heat inside the heating furnace is distributed more evenly, thereby avoiding the problem of uneven heating of rectangular castings inside the heating furnace, thus improving the quality of long castings after heat treatment.

[0013] (2) By adjusting the angle of the baffle, the flow rate of heat inside the furnace is accelerated, thereby increasing or decreasing the flow rate of heat inside the furnace by adjusting the direction of the baffle, thus making the temperature inside the furnace more uniform. Attached Figure Description

[0014] Figure 1 The diagram shown is a structural schematic of a heat treatment furnace for a side-opening elongated casting according to Embodiment 1.

[0015] Figure 2 The diagram shown is a schematic diagram of the internal structure of a heat treatment furnace for a side-opening elongated casting in Embodiment 1;

[0016] Figure 3 The diagram shown is a schematic diagram of the bottom structure of a heat treatment furnace for a side-opening elongated casting in Embodiment 1;

[0017] Figure 4 The diagram shown is a structural schematic of the air pump in Example 1;

[0018] Figure 5 The diagram shown is a schematic diagram of the structure of the baffle in Embodiment 1.

[0019] In the diagram: 1. Heating furnace; 2. Side-opening placement compartment; 3. Placement platform; 4. Guide plate; 5. Air pump; 6. Air outlet pipe; 7. Four-way pipe; 8. Air distribution pipe one; 9. T-way pipe; 10. Air distribution pipe two; 11. Atomizing nozzle; 12. Limiting rod; 13. Mounting base; 14. Baffle; 15. Bolt. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0021] Example 1

[0022] This utility model provides a side-opening heat treatment furnace for elongated castings, such as... Figures 1 to 5 As shown, the system includes a heating furnace 1, a side-opening door placement compartment 2 fixedly connected to the bottom of the heating furnace 1, a placement platform 3 slidably connected to the bottom of the side-opening door placement compartment 2, several guide plates 4 fixedly connected to the top of the interior of the heating furnace 1, multiple air pumps 5 embedded in the top of the inner wall of the heating furnace 1, the output ends of the multiple air pumps 5 fixedly connected to the same air outlet pipe 6, a four-way pipe 7 sleeved at the bottom of the air outlet pipe 6, multiple branch pipes 8 embedded inside the four-way pipe 7, and a three-way pipe 8 sleeved at the bottom of one of the branch pipes 8. Pipe 9, the three-way pipe 9 has multiple gas distribution pipes 10 embedded inside, and multiple atomizing nozzles 11 are embedded on the surface of gas distribution pipe 8 and gas distribution pipe 10. The existing side-opening long casting heat treatment furnace also includes a lifting device. In use, the long casting is placed on the top of the placement platform 3, and the lifting device is activated to drive the long casting into the heating furnace 1 for heat treatment. Finally, the lifting device is activated to descend and take out the heat-treated long casting, thus completing the process of placing and taking out the long casting.

[0023] like Figure 2 and Figure 4 As shown, the number of air pumps 5 is set to four rows. Each row of air pumps 5 is composed of five units. The four rows of air pumps 5 are evenly distributed on the inner walls of the four ends of the heating furnace 1. The heat from the top of the heating furnace 1 is evenly transferred through the four air pumps 5. This avoids the problem that the top castings are overheated when the temperature at the top of the heating furnace 1 is too high, while the bottom castings are heated unevenly, thus reducing the heat treatment efficiency of the heating furnace 1.

[0024] like Figures 1 to 3 As shown, multiple limiting rods 12 are slidably connected inside the placement platform 3. All the limiting rods 12 are fixedly connected inside the heating furnace 1. There are a total of four limiting rods 12, which are located at the inner edge of the heating furnace 1. When the placement platform 3 rises, it is limited by the four limiting rods 12, making the process of the placement platform 3 rising more stable and thus avoiding the problem of displacement when the placement platform 3 rises, thereby improving the stability of the placement platform 3 when rising.

[0025] like Figure 3 and Figure 5As shown, two mounting seats 13 are provided below the single atomizing nozzle 11. Both mounting seats 13 are fixedly connected to the inner wall of the heating furnace 1. A baffle 14 is installed on the opposite end face of the two mounting seats 13. Bolts 15 are threadedly connected to the mounting seats 13 and the baffle 14. By adjusting the direction of the baffle 14, the flow rate of heat inside the heating furnace 1 can be increased or decreased, making the temperature inside the heating furnace 1 more uniform, thereby improving the effect of heat treatment of long castings.

[0026] like Figures 2 to 4 As shown, the exhaust pipe 6, the first exhaust pipe 8, and the second exhaust pipe 10 are all made of ceramic. The ceramic exhaust pipe 6, the first exhaust pipe 8, and the second exhaust pipe 10 are more stable in transmitting heat inside the heating furnace 1, thus avoiding the problem of the exhaust pipe 6, the first exhaust pipe 8, and the second exhaust pipe 10 melting due to excessive heat, thereby improving the stability of heat transmission inside the heating furnace 1.

[0027] like Figure 2 and Figure 4 As shown, the number of guide plates 4 is set to multiple, and multiple guide plates 4 are tilted towards the middle of the top of the heating furnace 1 at the same time. By guiding the hot air inside the heating furnace 1 at the same time through multiple guide plates 4, the heat is tilted towards the top of the heating furnace 1, thereby improving the efficiency of the air pump 5 in absorbing this heat, and thus improving the efficiency of temperature transfer inside the heating furnace 1.

[0028] Working Principle: When using this device, the operator gathers the long castings requiring heat treatment and places them on the top of the placement platform 3. The operator then activates the lifting device, which moves the placement platform 3 upwards. As the platform rises, it slides on the outer surface of the limiting rod 12 and is stopped by the limiting rod 12, making the ascent more stable. When the platform rises into the heating furnace 1, the top edge of the platform 3 will be in contact with the bottom of the heating furnace 1. At this point, the operator starts the heating furnace 1 to heat treat the long castings. Then, the operator starts the air pump 5, which absorbs the heat from the top of the heating furnace 1 and discharges it through the air outlet into the air outlet pipe 6, moving along the air outlet pipe 6 to the fourth... Inside the four-way pipe 7, the heat is dispersed to the first gas distribution pipe 8. Some of the heat enters the three-way pipe 9 through the first gas distribution pipe 8 and then enters the second gas distribution pipe 10 through the three-way pipe 9. The heat inside the first gas distribution pipe 8 and the second gas distribution pipe 10 is then discharged through the atomizing nozzle 11. The discharged heat continues to rise to the top of the heating furnace 1, forming a circulation, which improves the quality of the long casting after heat treatment. The air pump 5 drives the air inside the heating furnace 1 to circulate, making the heat distribution inside the heating furnace 1 more uniform. This avoids the problem of the top casting being overheated and the bottom casting being underheated due to uneven heat distribution inside the heating furnace 1, thereby improving the quality of the long casting after heat treatment.

[0029] When the operator operates the heating furnace 1 to heat treat different castings, the angle of the baffle 14 is adjusted by rotating the baffle 14. The adjusted baffle 14 can guide the airflow sprayed from the atomizing nozzle 11, thereby accelerating the flow of heat inside the heating furnace 1 and thus increasing or decreasing the direction of the baffle 14.

[0030] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A heat treatment furnace for side-opening elongated castings, characterized in that, include: A heating furnace (1) is fixedly connected to a side-opening door placement chamber (2) at its bottom end. A placement platform (3) is slidably connected to the bottom end of the side-opening door placement chamber (2). Several guide plates (4) are fixedly connected to the top end of the interior of the heating furnace (1). Several air pumps (5) are embedded in the top end of the inner wall of the heating furnace (1). The output ends of the multiple air pumps (5) are fixedly connected to the same air outlet pipe (6). A four-way pipe (7) is sleeved and connected to the bottom end of the air outlet pipe (6). Several gas distribution pipes (8) are embedded and connected inside the four-way pipe (7). A three-way pipe (9) is sleeved and connected to the bottom end of one of the gas distribution pipes (8). Several gas distribution pipes (10) are embedded and connected inside the three-way pipe (9). Several atomizing nozzles (11) are embedded and connected to the surfaces of both the gas distribution pipe (8) and the gas distribution pipe (10).

2. The heat treatment furnace for a side-opening elongated casting according to claim 1, characterized in that, The number of air pumps (5) is set to four rows. Each row of air pumps (5) consists of five units. The four rows of air pumps (5) are evenly distributed on the inner walls of the four ends of the heating furnace (1).

3. The heat treatment furnace for a side-opening elongated casting according to claim 1, characterized in that, The placement platform (3) has multiple limiting rods (12) slidably connected inside, and the multiple limiting rods (12) are all fixedly connected inside the heating furnace (1).

4. The heat treatment furnace for a side-opening elongated casting according to claim 1, characterized in that, Two mounting seats (13) are provided below the single atomizing nozzle (11). Both mounting seats (13) are fixedly connected to the inner wall of the heating furnace (1). A baffle (14) is installed on the opposite end face of the two mounting seats (13). Bolts (15) are threadedly connected inside the mounting seats (13) and the baffle (14).

5. A heat treatment furnace for a side-opening elongated casting according to claim 1, characterized in that, The exhaust pipe (6), the first air distribution pipe (8), and the second air distribution pipe (10) are all made of ceramic material.

6. A heat treatment furnace for a side-opening elongated casting according to claim 1, characterized in that, The number of guide plates (4) is set to multiple, and the multiple guide plates (4) are tilted at the top center of the heating furnace (1) at the same time.

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