Box-type heating furnace with air circulation

Abstract

The utility model belongs to the technical field of box type heating furnaces, and particularly relates to an air circulation box type heating furnace which comprises an inner shell, an outer shell and a sliding door. The inner shell is a U-shaped frame, the outer shell is a cuboid open frame, and an opening of the cuboid open frame is formed in the side face. The inner shell is arranged inside the outer shell, the inner shell and the outer shell form two cavities I on two sides of the inner shell, the inner shell and the outer shell form a cavity II below the inner shell, the two cavities I are provided with sealing plates I close to the opening of the outer shell, the cavity II is provided with a sealing plate II close to the opening of the outer shell, and the sliding door is mounted at the opening of the outer shell. The heating furnace has the advantages that the draught fan drives air to sequentially pass through the heating pipe, the first cavity and the second cavity to enter the inner shell, the air circularly flows in the inner shell, and meanwhile the air drives heat of the heating pipe to circulate, so that the temperature in the heating furnace is uniform, and the heating efficiency is improved; the heated workpiece can be pushed out along with the tray, the heated workpiece can be taken out conveniently, and the safety of workers is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of box-type heating furnaces, and particularly relates to a box-type heating furnace with air circulation. Background Art

[0002] In the existing box-type heating furnace, heating tubes are arranged between the inner shell and the outer shell to heat the workpieces inside the inner shell. This kind of box-type heating furnace has the problem of uneven internal temperature, thus reducing the heating efficiency. At the same time, after the workpieces are heated, the staff need to wait for the temperature inside the heating furnace to drop before they can approach and take out the workpieces, otherwise there is a risk of scalding. Therefore, how to improve the uniformity of the internal temperature of the box-type heating furnace and how to reduce the danger of taking out the heated workpieces have become urgent problems to be solved. Content of the Utility Model

[0003] The utility model provides a box-type heating furnace with air circulation for the above problems.

[0004] The utility model relates to a box-type heating furnace with air circulation, which includes an inner shell, an outer shell and a sliding door;

[0005] The inner shell is a U-shaped frame, the outer shell is a cuboid open frame, and the opening of the cuboid open frame is on the side;

[0006] The inner shell is arranged inside the outer shell. The inner shell and the outer shell form two cavities I on both sides of the inner shell, and the inner shell and the outer shell form a cavity II below the inner shell. Sealing plates I are arranged at the two cavities I near the opening of the outer shell, and a sealing plate II is arranged at the cavity II near the opening of the outer shell. The sliding door is installed at the opening of the outer shell.

[0007] Preferably, heating tubes are arranged on one side of the cavity I close to the inner shell, and a blower is arranged above the heating tubes in the cavity I.

[0008] Preferably, an air inlet hole is opened on the outer shell above the blower, and an air outlet hole is opened at the center position of the top of the outer shell.

[0009] Preferably, the air inlet of the blower is connected to the air inlet hole, and the air outlet of the blower faces the heating tubes.

[0010] Preferably, a plurality of through holes I are opened at the bottom of the inner shell. Two guide rails are arranged above the bottom of the inner shell. The two guide rails are parallel to each other and perpendicular to the sliding door. Sliders I are slidably connected above the two guide rails respectively. A tray is fixedly connected above the two sliders I. A plurality of through holes II are opened on the tray.

[0011] Preferably, a connecting plate is arranged between the two sliders I, and a linear telescopic device I is fixedly connected to the side of the connecting plate away from the opening of the housing. The side of the linear telescopic device I away from the connecting plate is fixedly connected to the housing.

[0012] Preferably, the sliding door includes a U-shaped frame, a linear telescopic device II, and a door panel;

[0013] The opening of the U-shaped frame faces downward. The lower ends of the two wall rods of the U-shaped frame are respectively fixedly connected to two sealing plates I on the side close to the housing. The door panel is arranged between the two wall rods of the U-shaped frame. Sliding grooves II are respectively formed on the sides of the two wall rods of the U-shaped frame close to the door panel. Two sliders II are respectively fixedly connected to the two sides of the door panel close to the U-shaped frame. The sliders II are slidably connected to the sliding grooves;

[0014] The linear telescopic device II is fixedly connected above the U-shaped frame, and the push rod of the linear telescopic device II passes through the U-shaped frame and is fixedly connected above the door panel.

[0015] Preferably, four feet are arranged below the housing.

[0016] Preferably, both the linear telescopic device I and the linear telescopic device II are cylinders, oil cylinders or electric telescopic rods.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] Compared with the prior art, for the box-type heating furnace with air circulation of the present utility model,

[0019] (1) The fan drives the air to sequentially pass through the heating pipe, the first cavity, and the second cavity and then enter the inner shell, circulating inside the inner shell. At the same time, the air drives the heat of the heating pipe to circulate, so that the temperature inside the heating furnace is uniform and the heating efficiency is improved;

[0020] (2) The heated workpiece can be pushed out with the tray, which is convenient for taking out the heated workpiece and ensures the safety of the staff;

[0021] (3) A plurality of through holes II are provided on the tray, which ensures smooth circulation inside the inner shell and also ensures that the bottom of the heated workpiece is evenly heated, further improving the efficiency of heating the workpiece. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments:

[0023] Figure 1 Schematic diagram of the box-type heating furnace with air circulation provided in Embodiment 1;

[0024] Figure 2 Internal structure diagram of cavity 1 provided for Example 1;

[0025] Figure 3 Internal structure diagram of the box-type heating furnace with air circulation provided for Example 1;

[0026] Figure 4 Front view of the box-type heating furnace with air circulation provided for Example 1;

[0027] Figure 5 Top view of the box-type heating furnace with air circulation provided for Example 1.

[0028] Explanation of reference numerals:

[0029] 1 - Inner shell, 2 - Outer shell, 3 - Sliding door, 4 - Cavity 1, 5 - Cavity 2, 6 - Sealing plate 1, 7 - Sealing plate 2, 8 - Heating tube, 9 - Fan, 10 - Air inlet hole, 11 - Air outlet hole, 12 - Guide rail, 13 - Through hole 1, 14 - Slide block 1, 15 - Tray, 16 - Through hole 2, 17 - Connecting plate, 18 - Linear telescopic device 1, 19 - U-shaped frame, 20 - Linear telescopic device 2, 21 - Door panel, 22 - Sliding groove, 23 - Slide block 2, 24 - Foot. Detailed implementation manners

[0030] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described below with reference to the drawings and embodiments.

[0031] Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention may be implemented in other ways different from those described herein. Therefore, the present invention is not limited by the specific embodiments disclosed in the following specification.

[0032] Example 1

[0033] The following combines Figures 1 - 5 to further describe the present invention. As Figures 1 - 5 shown, a box-type heating furnace with air circulation includes an inner shell 1, an outer shell 2 and a sliding door 3.

[0034] As Figures 1 - 5 shown, the inner shell 1 is a U-shaped frame, and the outer shell 2 is a rectangular open frame with an opening on the side.

[0035] As Figures 1 - 5As shown, the inner shell 1 is disposed inside the outer shell 2. The inner shell 1 and the outer shell 2 form two first cavities 4 on both sides of the inner shell 1, and the inner shell 1 and the outer shell 2 form a second cavity 5 below the inner shell 1. Sealing plates 6 are provided at the openings of the two first cavities 4 close to the outer shell 2, and a sealing plate 7 is provided at the opening of the second cavity 5 close to the outer shell 2. The sliding door 3 is installed at the opening of the outer shell 2.

[0036] As Figures 1 - 5 shown, a heating pipe 8 is provided on one side of the first cavity 4 close to the inner shell 1, and a blower 9 is provided above the heating pipe 8 in the first cavity 4.

[0037] As Figures 1 - 5 shown, the outer shell 2 is provided with an air inlet hole 10 above the blower 9, and an air outlet hole 11 is provided at the center position of the top of the outer shell 2.

[0038] As Figures 1 - 5 shown, the air inlet of the blower 9 is connected to the air inlet hole 10, and the air outlet of the blower 9 faces the heating pipe 8.

[0039] As Figures 1 - 5 shown, a plurality of first through holes 13 are provided at the bottom of the inner shell 1, and two guide rails 12 are provided above the bottom of the inner shell 1. The two guide rails 12 are parallel to each other and perpendicular to the sliding door 3. Sliders 14 are slidably connected above the two guide rails 12, and a tray 15 is fixedly connected above the two sliders 14. A plurality of second through holes 16 are provided on the tray 15.

[0040] As Figures 1 - 5 shown, a connecting plate 17 is provided between the two sliders 14. One side of the connecting plate 17 away from the opening of the outer shell 2 is fixedly connected to a first linear telescopic device 18, and the side of the first linear telescopic device 18 away from the connecting plate 17 is fixedly connected to the outer shell 2.

[0041] As Figures 1 - 5 shown, the sliding door 3 includes a U-shaped frame 19, a second linear telescopic device 20, and a door panel 21.

[0042] As Figures 1 - 5 shown, the opening of the U-shaped frame 19 faces downward. The lower ends of the two wall rods of the U-shaped frame 19 are fixedly connected to the two sealing plates 6 on the side close to the outer shell 2 respectively. The door panel 21 is disposed between the two wall rods of the U-shaped frame 19. Sliding grooves 22 are respectively provided on the sides of the two wall rods of the U-shaped frame 19 close to the door panel 21. Two sliders 23 are fixedly connected to the two sides of the door panel 21 close to the U-shaped frame 19, and the sliders 23 are slidably connected in the sliding grooves 22.

[0043] As Figures 1 - 5 shown, the second linear telescopic device 20 is fixedly connected above the U-shaped frame 19, and the push rod of the second linear telescopic device 20 passes through the U-shaped frame 19 and is fixedly connected above the door panel 21.

[0044] As Figures 1 - 5 shown, four feet 24 are provided below the outer shell 2.

[0045] As Figures 1 - 5 shown, the linear telescopic device one 18 and the linear telescopic device two 20 are both cylinders.

[0046] The heating tube 8 and the blower 9 are both externally connected to the power supply.

[0047] Working principle: The blower 9 sucks air into the cavity one 4 through the air inlet hole 10, and the air is heated by the heating tube 8 in the cavity one 4. The blower 9 drives the hot air to enter the inner shell 1 through the cavity two 5 for circulation, so as to uniformly heat the workpiece. After the workpiece is heated, the push rod of the linear telescopic device two 20 contracts, thereby driving the door plate 21 to move upward, and then the heated workpiece is pushed out by the linear telescopic device one 18 along with the tray 15.

[0048] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification or equivalent change made to the above embodiments according to the technical essence of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims

1. A box-type heating furnace with air circulation, characterized in that, It includes an inner shell (1), an outer shell (2) and a sliding door (3); The inner shell (1) is a U-shaped frame, the outer shell (2) is a cuboid open frame, and the opening of the cuboid open frame is on the side; The inner shell (1) is arranged inside the outer shell (2). Two first cavities (4) are formed between the inner shell (1) and the outer shell (2) on both sides of the inner shell (1). A second cavity (5) is formed between the inner shell (1) and the outer shell (2) below the inner shell (1). Sealing plates one (6) are provided at the openings of the two first cavities (4) close to the opening of the outer shell (2). A sealing plate two (7) is provided at the opening of the second cavity (5) close to the opening of the outer shell (2). The sliding door (3) is installed at the opening of the outer shell (2).

2. The box-type heating furnace with air circulation according to claim 1, characterized in that, A heating pipe (8) is arranged on the side of the first cavity (4) close to the inner shell (1), and a blower (9) is arranged above the heating pipe (8) in the first cavity (4).

3. The box-type heating furnace with air circulation according to claim 2, characterized in that, An air inlet hole (10) is opened in the outer shell (2) above the blower (9), and an air outlet hole (11) is opened at the center position of the top of the outer shell (2).

4. The box-type heating furnace with air circulation according to claim 3, characterized in that, The air inlet of the blower (9) is connected to the air inlet hole (10), and the air outlet of the blower (9) faces the heating pipe (8).

5. The box-type heating furnace with air circulation according to claim 4, characterized in that, A plurality of first through holes (13) are opened at the bottom of the inner shell (1). Two guide rails (12) are arranged above the bottom of the inner shell (1). The two guide rails (12) are parallel to each other and perpendicular to the sliding door (3). Sliders one (14) are slidably connected above the two guide rails (12). A tray (15) is fixedly connected above the two sliders one (14). A plurality of second through holes (16) are opened on the tray (15).

6. The box-type heating furnace with air circulation according to claim 5, characterized in that, A connecting plate (17) is arranged between the two sliders one (14). One side of the connecting plate (17) away from the opening of the outer shell (2) is fixedly connected with a first linear telescopic device (18), and the side of the first linear telescopic device (18) away from the connecting plate (17) is fixedly connected with the outer shell (2).

7. The box-type heating furnace with air circulation according to claim 6, characterized in that, The sliding door (3) includes a U-shaped frame (19), a second linear telescopic device (20) and a door panel (21); The opening of the U-shaped frame (19) faces downward. The lower ends of the two wall rods of the U-shaped frame (19) are respectively fixedly connected to the two sealing plates one (6) on the side close to the outer shell (2). The door panel (21) is arranged between the two wall rods of the U-shaped frame (19). Sliding grooves (22) are respectively opened on the sides of the two wall rods of the U-shaped frame (19) close to the door panel (21). Two sliders two (23) are respectively fixedly connected to the two sides of the door panel (21) close to the U-shaped frame (19). The sliders two (23) are slidably connected in the sliding grooves (22); The second linear telescopic device (20) is fixedly connected above the U-shaped frame (19), and the push rod of the second linear telescopic device (20) passes through the U-shaped frame (19) and is fixedly connected above the door panel (21).

8. The box-type heating furnace with air circulation according to claim 7, characterized in that, Four feet (24) are arranged below the outer shell (2).

9. The box-type heating furnace with air circulation according to claim 8, characterized in that, Both the first linear telescopic device (18) and the second linear telescopic device (20) are cylinders, oil cylinders or electric telescopic rods.

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