Energy-saving tubular furnace

Abstract

The utility model relates to a tubular furnace, belongs to the technical field of tubular furnaces, and particularly relates to an energy-saving tubular furnace which comprises a furnace body and a furnace tube, the furnace tube is transversely mounted on the furnace body and penetrates through the outer side wall of the furnace body, a radiating tube is sleeved on the furnace tube, and an air inlet tube is fixedly mounted on the side wall of the radiating tube. The air inlet pipe penetrates through the side wall of the heat dissipation pipe and communicates with an inner cavity of the heat dissipation pipe, one end of the air inlet pipe penetrates through the side wall of the furnace body and is located outside the furnace body, an exhaust pipe is fixedly installed at the position, corresponding to the air inlet pipe, of the side wall of the heat dissipation pipe, and the exhaust pipe penetrates through the side wall of the heat dissipation pipe and communicates with the interior of the heat dissipation pipe. One end of the exhaust pipe penetrates through the side wall of the furnace body and is located outside the furnace body, a plurality of air outlets are evenly distributed in the inner wall of the heat dissipation pipe, the air outlets penetrate through the inner wall of the heat dissipation pipe and are communicated with an inner cavity of the heat dissipation pipe, and a movable mechanism is arranged in the heat dissipation pipe; according to the utility model, the effect of uniformly cooling the furnace tube is achieved, and the problem of non-uniform cooling of the furnace tube is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of tube furnaces, in particular to an energy-saving tube furnace. Background Art

[0002] The high-temperature tube furnace is a key sintering device applied to the field of new material research. It can provide a protective atmosphere environment and a vacuum environment during the sintering process, and ensure the purity of the sintering environment.

[0003] After retrieving the Chinese patent with the publication number CN205119807U, it discloses an energy-saving open-type tube fiber furnace, including a furnace body. An insulating layer is provided on the inner wall of the furnace body, a heat-conducting layer is provided on the inner wall of the furnace tube. Between the two air-blowing devices and the heating channel, a plurality of cold air pipes are arranged from top to bottom. Temperature sensors are provided on both the upper and lower sides of the heating channel, which can effectively prevent the temperature inside the furnace body from diffusing out, and can also protect the staff outside the furnace body.

[0004] Based on the above retrieval and combined with the prior art, it is found that:

[0005] When the above-mentioned scheme is cooled, cold air is blown into the equipment through the upper and lower two air-blowing devices for cooling. However, due to the slow heat transfer, the furnace tube is cooled unevenly, resulting in poor cooling effect of the objects inside the furnace tube. Summary of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides an energy-saving tube furnace, achieving the effect of uniform cooling of the furnace tube.

[0007] The technical solution for realizing the purpose of the utility model is: an energy-saving tube furnace, including a furnace body and a furnace tube. The furnace tube is horizontally installed on the furnace body, and the furnace tube penetrates through the outer side wall of the furnace body. A heat dissipation tube is sleeved on the furnace tube. An air inlet pipe is fixedly installed on the side wall of the heat dissipation tube. The air inlet pipe penetrates through the side wall of the heat dissipation tube and is communicated with the inner cavity of the heat dissipation tube. One end of the air inlet pipe penetrates through the side wall of the furnace body and is located outside the furnace body. An exhaust pipe is fixedly installed on the side wall of the heat dissipation tube corresponding to the position of the air inlet pipe. The exhaust pipe penetrates through the side wall of the heat dissipation tube and is communicated with the inside of the heat dissipation tube. One end of the exhaust pipe penetrates through the side wall of the furnace body and is located outside the furnace body. A plurality of air outlet openings are evenly distributed on the inner wall of the heat dissipation tube. The air outlet openings penetrate through the inner wall of the heat dissipation tube and are communicated with the inner cavity of the heat dissipation tube. A movable mechanism is arranged inside the heat dissipation tube;

[0008] In some embodiments, the movable mechanism includes a movable sleeve, a connection hole, and a return spring. There are two movable sleeves, which are respectively movably installed on the left and right sides of the inner cavity of the heat dissipation tube. The connection hole penetrates the inner and outer side walls of the movable sleeve, and the number and position of the connection holes correspond to the air outlets. The connection holes and the air outlets are arranged staggeredly. The return spring is movably installed between the movable sleeve and the heat dissipation tube, and the movable sleeve is movably installed in the inner cavity of the heat dissipation tube through the return spring.

[0009] In some embodiments, a heat insulation material is provided on the inner wall of the furnace body, and a heating coil is installed on the side wall of the furnace body.

[0010] In some embodiments, a sealing ring is fixedly installed inside the heat dissipation tube.

[0011] In some embodiments, a sealing ring is fixedly installed inside the exhaust pipe, and the inside of the sealing ring gradually becomes smaller in the direction close to the heat dissipation tube. A sealing block is movably installed inside the sealing ring. A mounting plate is horizontally and fixedly installed inside the exhaust pipe. A movable rod is fixedly installed on the sealing block, and the movable rod penetrates the side wall of the mounting plate. The sealing block and the movable rod are movably installed inside the exhaust pipe through the mounting plate, and a movable spring is sleeved on the movable rod.

[0012] Compared with the prior art, the remarkable advantages of this utility model are:

[0013] Through the arrangement of the heat dissipation tube and the movable mechanism, when the furnace tube needs to be cooled, cold air can be sent into the inner cavity of the heat dissipation tube through the air inlet pipe. Due to the arrangement of the movable sleeve, after the cold air enters the inner cavity of the heat dissipation tube, the cold air will not be discharged from the air outlet of the heat dissipation tube immediately. Instead, it will first fill the inner cavity of the heat dissipation tube. When the inner cavity of the heat dissipation tube is filled with cold air, the movable sleeve will move under the action of pressure, causing the movable sleeve to drive the connection hole to move. When the connection hole moves to correspond to the air outlet, the cold air in the inner cavity of the heat dissipation tube will be injected into the inside of the heat dissipation tube, thereby cooling the furnace tube. Since the air outlets are evenly distributed, the contact between the cold air and the furnace tube inside the heat dissipation tube is also very uniform, achieving the effect of uniform cooling of the furnace tube;

[0014] The problem of uneven cooling of the furnace tube is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following further explains the present utility model in conjunction with the drawings and embodiments:

[0016] Figure 1 is the main structural schematic diagram provided by the present utility model in one embodiment;

[0017] Figure 2 is the overall structural schematic diagram provided by the present utility model in one embodiment;

[0018] Figure 3 It is a cross-sectional view of the internal structure of the heat dissipation pipe provided in an embodiment of the present utility model;

[0019] Figure 4 It is provided in an embodiment of the present utility model Figure 3 The enlarged view at position A in;

[0020] Figure 5 It is a cross-sectional view of the internal structure of the exhaust pipe provided in an embodiment of the present utility model.

[0021] Explanation of reference numerals:

[0022] 1. Furnace body; 2. Furnace tube; 3. Heat insulation material; 4. Heating coil; 5. Heat dissipation pipe; 6. Intake pipe; 7. Exhaust pipe; 8. Sealing ring; 9. Air outlet; 10. Movable sleeve; 11. Connecting hole; 12. Return spring; 13. Sealing ring; 14. Sealing block; 15. Mounting plate; 16. Movable rod; 17. Movable spring. Specific implementation manners

[0023] The present utility model will be described in detail below. The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model provides an energy-saving tubular furnace through improvement. The technical solution of the present utility model is:

[0025] Such as Figures 1 to 3As shown in the figure, an energy-saving tubular furnace includes a furnace body 1 and furnace tubes 2. The furnace body 1 is a hollow cylindrical structure. The furnace tubes 2 are horizontally installed on the furnace body 1 and penetrate through the outer side wall of the furnace body 1. Heat-insulating material 3 is provided on the inner wall of the furnace body 1. A heating coil 4 is installed on the side wall of the furnace body 1. After the heating coil 4 is energized, the furnace tubes 2 can be heated. A heat dissipation tube 5 is sleeved on the furnace tubes 2. The heat dissipation tube 5 is a hollow cylindrical tube. An air inlet pipe 6 is fixedly installed on the side wall of the heat dissipation tube 5. The air inlet pipe 6 is a cylindrical tube and penetrates through the side wall of the heat dissipation tube 5 to communicate with the inner cavity of the heat dissipation tube 5. One end of the air inlet pipe 6 penetrates through the side wall of the furnace body 1 and is located outside the furnace body 1. An exhaust pipe 7 is fixedly installed on the side wall of the heat dissipation tube 5 corresponding to the position of the air inlet pipe 6. The exhaust pipe 7 is a cylindrical tube and penetrates through the side wall of the heat dissipation tube 5 to communicate with the inside of the heat dissipation tube 5. One end of the exhaust pipe 7 penetrates through the side wall of the furnace body 1 and is located outside the furnace body 1. A plurality of air outlet holes 9 are evenly distributed on the inner wall of the heat dissipation tube 5. The air outlet holes 9 are circular holes and penetrate through the inner wall of the heat dissipation tube 5 to communicate with the inner cavity of the heat dissipation tube 5. An active mechanism is provided inside the heat dissipation tube 5;

[0026] As Figure 3 and Figure 4 shown in the figure, the active mechanism includes an active sleeve 10, a connection hole 11 and a return spring 12. The active sleeve 10 is a hollow cylindrical structure. There are two active sleeves 10, and the two active sleeves 10 are respectively movably installed on the left and right sides of the inner cavity of the heat dissipation tube 5. The connection hole 11 is a circular hole and penetrates through the inner and outer side walls of the active sleeve 10. The number and position of the connection holes 11 correspond to those of the air outlet holes 9. The connection holes 11 and the air outlet holes 9 are arranged staggeredly. The return spring 12 is movably installed between the active sleeve 10 and the heat dissipation tube 5. The active sleeve 10 is movably installed in the inner cavity of the heat dissipation tube 5 through the return spring 12. Through the setting of the heat dissipation tube and the active mechanism, when it is necessary to cool the furnace tubes 2, cold air can be sent into the inner cavity of the heat dissipation tube 5 through the air inlet pipe 6. Due to the setting of the active sleeve 10, after the cold air enters the inner cavity of the heat dissipation tube 5, the cold air will not be discharged from the heat dissipation tube 5 through the air outlet holes 9 immediately, but first fill the inner cavity of the heat dissipation tube 5. When the inner cavity of the heat dissipation tube 5 is filled with cold air, the active sleeve 10 will move under the action of pressure, causing the active sleeve 10 to drive the connection hole 11 to move. When the connection hole 11 moves to correspond to the air outlet hole 9, the cold air in the inner cavity of the heat dissipation tube 5 will be injected into the inside of the heat dissipation tube 5, thereby cooling the furnace tubes 2. Due to the uniform distribution of the air outlet holes 9, the contact between the cold air and the furnace tubes 2 inside the heat dissipation tube 5 is also very uniform, making the furnace tubes 2 cooled evenly.

[0027] As Figure 2 and Figure 3As shown, in one embodiment, a sealing ring 8 is fixedly installed inside the heat dissipation pipe 5. Through the setting of the sealing ring 8, cold air can be prevented from overflowing from the inside of the heat dissipation pipe 5.

[0028] As Figure 5 shown, in one embodiment, a sealing ring 13 is fixedly installed inside the exhaust pipe 7. The sealing ring 13 is of a circular structure, and the inside of the sealing ring 13 gradually becomes smaller towards the direction close to the heat dissipation pipe 5. A sealing block 14 is movably installed inside the sealing ring 13. The sealing block 14 is of a conical structure. The sealing block 14 can seal the inside of the sealing ring 13. A mounting plate 15 is horizontally and fixedly installed inside the exhaust pipe 7. The mounting plate 15 is a rectangular plate. A movable rod 16 is fixedly installed on the sealing block 14. The movable rod 16 is of a cylindrical structure. The movable rod 16 penetrates through the side wall of the mounting plate 15. The sealing block 14 and the movable rod 16 are movably installed inside the exhaust pipe 7 through the mounting plate 15. A movable spring 17 is sleeved on the movable rod 16. When heating the furnace tube 2, the sealing block 14 will be in close contact with the sealing ring 13 under the action of the movable spring 17, so that the exhaust pipe 7 is sealed, and the heat inside the furnace body 1 will not be dissipated to the outside. When dissipating heat, the exhaust pipe 7 discharges the used cold air from the inside of the heat dissipation pipe 5. The sealing block 14 will move inside the exhaust pipe 7 under pressure, so that the inside of the sealing ring 13 is opened. At this time, the air flow can be discharged through the exhaust pipe 7. When the exhaust is completed, the inside of the sealing ring 13 will be sealed again to avoid heat loss.

[0029] The specific working method is as follows:

[0030] Through the setting of the heat dissipation pipe 5 and the movable mechanism, when it is necessary to cool the furnace tube 2, cold air can be sent into the inner cavity of the heat dissipation pipe 5 through the air inlet pipe 6. Due to the setting of the movable sleeve 10, after the cold air enters the inner cavity of the heat dissipation pipe 5, the cold air will not be discharged from the inside of the heat dissipation pipe 5 through the air outlet 9 immediately. Instead, the inner cavity of the heat dissipation pipe 5 will be filled first. When the inner cavity of the heat dissipation pipe 5 is filled with cold air, the movable sleeve 10 will move under pressure, so that the movable sleeve 10 drives the connecting hole 11 to move. When the connecting hole 11 moves to correspond to the air outlet 9, the cold air in the inner cavity of the heat dissipation pipe 5 will be injected into the inside of the heat dissipation pipe 5, thereby cooling the furnace tube 2. Due to the uniform distribution of the air outlets 9, the contact between the cold air and the furnace tube 2 inside the heat dissipation pipe 5 is also very uniform, making the furnace tube 2 cool evenly.

[0031] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above technical means, but also include the technical solutions composed of equivalent replacements of the above technical features. The matters not covered in the present utility model belong to the common general knowledge of those skilled in the art.

Claims

1. An energy-saving tubular furnace, comprising a furnace body (1) and a furnace tube (2), wherein the furnace tube (2) is transversely mounted on the furnace body (1), and the furnace tube (2) penetrates the outer side wall of the furnace body (1), characterized in that: The furnace tube (2) is sleeved with a heat dissipation tube (5), an air intake tube (6) is fixedly mounted on the side wall of the heat dissipation tube (5), the air intake tube (6) penetrates the side wall of the heat dissipation tube (5) and is connected to the inner cavity of the heat dissipation tube (5), and one end of the air intake tube (6) penetrates the side wall of the furnace body (1) and is located outside the furnace body (1), an exhaust tube (7) is fixedly mounted on the side wall of the heat dissipation tube (5) at a position corresponding to the air intake tube (6), the exhaust tube (7) penetrates the side wall of the heat dissipation tube (5) and is connected to the inside of the heat dissipation tube (5), one end of the exhaust tube (7) penetrates the side wall of the furnace body (1) and is located outside the furnace body (1), a plurality of air outlets (9) are evenly distributed on the inner wall of the heat dissipation tube (5), the air outlets (9) penetrate the inner wall of the heat dissipation tube (5) and are connected to the inner cavity of the heat dissipation tube (5), and a movable mechanism is arranged inside the heat dissipation tube (5).

2. The energy-saving tubular furnace according to claim 1, characterized in that: The movable mechanism comprises a movable sleeve (10), a connecting hole (11) and a reset spring (12). There are two movable sleeves (10) in total. The two movable sleeves (10) are movably mounted on the left and right sides of the inner cavity of the heat dissipation pipe (5), respectively. The connecting hole (11) penetrates the inner and outer side walls of the movable sleeve (10), and the number and positions of the connecting holes (11) correspond to the air outlet (9). The connecting holes (11) and the air outlet (9) are arranged alternately. The reset spring (12) is movably mounted between the movable sleeve (10) and the heat dissipation pipe (5). The movable sleeve (10) is movably mounted in the inner cavity of the heat dissipation pipe (5) through the reset spring (12).

3. The energy-saving tubular furnace according to claim 1, characterized in that: A heat insulating material (3) is provided on the inner wall of the furnace body (1), and a heating coil (4) is installed on the side wall of the furnace body (1).

4. The energy-saving tubular furnace according to claim 1, characterized in that: A sealing ring (8) is fixedly installed inside the heat dissipation pipe (5).

5. The energy-saving tubular furnace according to claim 1, characterized in that: A sealing ring (13) is fixedly installed inside the exhaust pipe (7), and the inside of the sealing ring (13) gradually becomes smaller towards the direction close to the heat dissipation pipe (5). A sealing block (14) is movably installed inside the sealing ring (13). A mounting plate (15) is fixedly installed horizontally inside the exhaust pipe (7), and a movable rod (16) is fixedly installed on the sealing block (14).

6. The energy-saving tube furnace according to claim 5, characterized in that: The movable rod (16) penetrates the side wall of the mounting plate (15); the sealing block (14) and the movable rod (16) are movably mounted inside the exhaust pipe (7) via the mounting plate (15); and a movable spring (17) is sleeved on the movable rod (16).

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