Double-layer dust-free tunnel furnace

Abstract

The utility model discloses a double-layer dust-free tunnel furnace, which relates to the technical field of drying devices, and adopts the technical scheme that the double-layer dust-free tunnel furnace comprises an electric cabinet, a heating section I, a heating section II and a cooling section which are sequentially arranged, and the electric cabinet is electrically connected with the heating section I, the heating section II and the cooling section; each of the heating section I, the heating section II and the cooling section comprises an upper-layer furnace and a lower-layer furnace, conveying mesh belts are arranged in the upper-layer furnace and the lower-layer furnace, a furnace cover I and a furnace cover II are arranged above the upper-layer furnace and the lower-layer furnace respectively, one side of the furnace cover I is rotatably connected to the top end of the upper-layer furnace, and the other side of the furnace cover II is rotatably connected to the top end of the lower-layer furnace. The second furnace cover is fixedly connected to the bottom end of the upper-layer furnace, a lifting mechanism is arranged on the bottom face of the lower-layer furnace, and the other end of the lifting mechanism is connected with the second furnace cover. Through the structural arrangement, the structure between the upper-layer furnace and the lower-layer furnace is compact, the strength is stable, the layout is reasonable, and double-layer independent conveying and baking are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drying devices, and more specifically, it relates to a double-layer dust-free tunnel furnace. Background Art

[0002] A dust-free tunnel furnace is an efficient industrial heating device, mainly used for continuous heating treatment of materials. Its core design concept is to build a closed and dust-free environment to achieve efficient and uniform heating of materials, while minimizing the impact of the environment on the heating process.

[0003] In the prior art, dust-free tunnel furnaces are widely used in many industrial fields such as food, chemical industry, medicine, ceramics, etc. They are important and indispensable equipment in modern industrial production. Currently, conventional dust-free tunnel furnaces all operate with single-layer conveying and baking. Their internal dust content is high, which easily affects product quality, and it will also lead to a large floor area of the dust-free room and high energy consumption, being unfavorable for the handling and turnover of materials.

[0004] Therefore, a double-layer dust-free tunnel furnace is needed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a double-layer dust-free tunnel furnace to solve the problems raised in the above background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] A double-layer dust-free tunnel furnace includes an electric control box, a first heating section, a second heating section, and a cooling section arranged in sequence. The electric control box is electrically connected to the first heating section, the second heating section, and the cooling section. The first heating section, the second heating section, and the cooling section each include an upper furnace and a lower furnace. A conveying mesh belt is provided in both the upper furnace and the lower furnace. Above the upper furnace and the lower furnace, there are a first furnace cover and a second furnace cover respectively. One side of the first furnace cover is rotatably connected to the top end of the upper furnace, and the second furnace cover is fixedly connected to the bottom end of the upper furnace. A lifting mechanism is provided on the bottom surface of the lower furnace, and the other end of the lifting mechanism is connected to the second furnace cover.

[0008] The technical solution of the utility model is further set as: The lifting mechanism includes a motor and four fixed seats located at the corners of the lower furnace. A lifting rod extends out from the inside of the fixed seat, and the other end of the lifting rod is located inside the second furnace cover. The output shaft of the motor is in transmission connection with the four lifting rods through a transmission component.

[0009] The technical solution of the present utility model is further set as follows: The transmission assembly includes a number of connecting seats, two adjacent connecting seats are connected by a transmission rod, and the connecting seat and the fixed seat are also connected by the transmission rod. The output shaft of the motor extends into one of the connecting seats, and bevel gears I are fixedly connected to both ends of the output shaft of the motor and the transmission rod. A bevel gear II is rotatably connected in the fixed seat, the bevel gear II is sleeved on the lifting rod and is threadedly connected thereto, two adjacent bevel gears I are meshed with each other, and the bevel gear I is meshed with the adjacent bevel gear II.

[0010] The technical solution of the present utility model is further set as follows: A number of blowers are provided in both the furnace cover I and the furnace cover II. A filter is provided below the blower. Long-shaft motors for driving the blowers are provided on both the furnace cover I and the furnace cover II. Both the furnace cover I and the furnace cover II are communicated with the outside through exhaust pipes.

[0011] The technical solution of the present utility model is further set as follows: The furnace cover II is fixedly connected to the upper-layer furnace through a mounting frame. The long-shaft motor and the exhaust pipe on the furnace cover II are both located in the mounting frame and the exhaust pipe extends out of the mounting frame.

[0012] The technical solution of the present utility model is further set as follows: A number of lower-layer maintenance doors for closing the mounting frame are rotatably connected to the mounting frame.

[0013] The technical solution of the present utility model is further set as follows: An electric push rod extending from the inside thereof is provided on the upper-layer furnace, and the other end of the electric push rod is connected to the furnace cover I.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0015] Through the lifting mechanism at the bottom end of the lower-layer furnace, the furnace cover II on the lower-layer furnace can move upward along with the upper-layer furnace and the furnace cover I, so that the space between the furnace cover II and the lower-layer furnace is opened, facilitating the observation of the material products on the conveyor belt of the lower-layer furnace. The upper-layer furnace can directly drive the furnace cover I to rotate through the electric push rod, so as to open the upper-layer furnace for observation. Such a method realizes automatic control, facilitates the separate maintenance of the upper-layer furnace and the lower-layer furnace, and such a double-layer design can reduce the floor area while ensuring the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0017] Figure 2 is a schematic structural view of the present utility model Figure 2 ;

[0018] Figure 3 It is a schematic structural diagram of the first heating section in the present utility model;

[0019] Figure 4 It is a schematic structure of the second heating section in the present utility model Figure 1 ;

[0020] Figure 5 It is a schematic structure of the second heating section in the present utility model Figure 2 ;

[0021] Figure 6 It is a schematic structure of the second heating section in the present utility model Figure 3 ;

[0022] Figure 7 It is a schematic structural diagram of the lifting mechanism in the present utility model.

[0023] In the figure: 1, electric control box; 2, the first heating section; 3, the second heating section; 4, cooling section; 5, upper furnace; 6, lower furnace; 7, conveying mesh belt; 8, furnace cover one; 9, furnace cover two; 10, motor; 11, fixed seat; 12, lifting rod; 13, connecting seat; 14, transmission rod; 15, fan; 16, filter; 17, long shaft motor; 18, exhaust pipe; 19, installation frame; 20, lower maintenance door; 21, electric push rod. Specific embodiments

[0024] In order to clearly understand the technical means of the present utility model and implement it according to the content of the specification, the following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but not to limit the scope of the present utility model. Embodiment

[0025] Referring to Figures 1 to 7 as shown, the present utility model provides a double-layer dust-free tunnel furnace, including an electric control box 1, a first heating section 2, a second heating section 3 and a cooling section 4 arranged in sequence. The electric control box 1 is electrically connected to the first heating section 2, the second heating section 3 and the cooling section 4. The strong and weak electricity in the electric control box 1 are separated. The first heating section 2 and the second heating section 3 are controlled together, and the cooling section 4 is controlled separately. The first heating section 2, the second heating section 3 and the cooling section 4 all include an upper furnace 5 and a lower furnace 6. A conveying mesh belt 7 is provided in both the upper furnace 5 and the lower furnace 6. The conveying surface width of the conveying mesh belt 7 is 1 m. The height of the conveying mesh belt 7 in the lower furnace 6 from the ground is 0.73 m, and the height of the conveying mesh belt 7 in the upper furnace 5 from the ground is 1.87 m. A furnace cover one 8 and a furnace cover two 9 are respectively provided above the upper furnace 5 and the lower furnace 6. One side of the furnace cover one 8 is rotatably connected to the top end of the upper furnace 5, and the furnace cover two 9 is fixedly connected to the bottom end of the upper furnace 5. A lifting mechanism is provided on the bottom surface of the lower furnace 6, and the other end of the lifting mechanism is connected to the furnace cover two 9.

[0026] Reference Figures 4 to 7 As shown in the figure, the lifting mechanism includes a motor 10 and four fixed seats 11 located at the corners of the lower furnace 6. The fixed seats 11 are provided with lifting rods 12 extending from their interiors. The other ends of the lifting rods 12 are located inside the second furnace cover 9. The output shaft of the motor 10 is drivingly connected to the four lifting rods 12 through a transmission assembly. The transmission assembly includes three connecting seats 13 on the same horizontal line. Two of the connecting seats 13 are respectively located between two groups of fixed seats 11, and the remaining connecting seat 13 corresponds to the position of the motor 10. Adjacent connecting seats 13 are connected by transmission rods 14, and the connecting seats 13 and the fixed seats 11 are also connected by transmission rods 14. The output shaft of the motor 10 extends into the corresponding connecting seat 13. Bevel gears I are fixedly connected to both ends of the output shaft of the motor 10 and the transmission rods 14. A bevel gear II is rotatably connected inside the fixed seat 11. The bevel gear II is sleeved on the lifting rod 12 and is threadedly connected thereto. Adjacent bevel gears I are meshed, and the bevel gear I is meshed with the adjacent bevel gear II.

[0027] Through the setting of the above structure, when the output shaft of the motor 10 rotates, the bevel gear I on the output shaft of the motor 10 will rotate inside the connecting seat 13, thereby driving the two transmission rods 14 on this connecting seat 13 to rotate. The two rotating transmission rods 14 respectively drive the transmission rods 14 on the other two connecting seats 13 to rotate, and further cause the bevel gear I inside the fixed seat 11 to rotate, so that the meshed bevel gear II rotates. Since the bevel gear II is sleeved on the lifting rod 12 and is threadedly connected thereto, the rotation of the bevel gear II will drive the lifting rod 12 to move upward, thereby achieving the effect of pushing the second furnace cover 9 away from the lower furnace 6 and moving upward.

[0028] Reference Figures 1 to 6 As shown in the figure, several fans 15 are provided inside both the first furnace cover 8 and the second furnace cover 9. A filter 16 is provided below the fans 15. Long-shaft motors 17 for driving the fans 15 are provided on both the first furnace cover 8 and the second furnace cover 9. Both the first furnace cover 8 and the second furnace cover 9 are communicated with the outside through exhaust pipes 18. The second furnace cover 9 is fixedly connected to the upper furnace 5 through a mounting frame 19. The long-shaft motor 17 and the exhaust pipe 18 on the second furnace cover 9 are both located inside the mounting frame 19 and the exhaust pipe 18 extends out of the mounting frame 19. Several lower maintenance doors 20 for closing the mounting frame 19 are rotatably connected to the mounting frame 19.

[0029] By setting the blower 15 and the exhaust pipe 18, hot air can exchange heat with the material products on the upper furnace 5 and the lower furnace 6 and then flow out. The filter 16 below the blower 15 ensures the dust-free level inside the upper furnace 5 and the lower furnace 6, improving the quality of the material products. The installation frame 19 provides a space for the long-shaft motor 17 and the exhaust pipe 18 on the lower furnace 6 while separating the upper furnace 5 and the lower furnace 6, preventing dust from the upper furnace 5 from falling onto the lower furnace 6. Moreover, the direction of the exhaust pipe 18 on the lower furnace 6 can be set away from the upper furnace 5 to avoid the waste gas affecting the upper furnace 5. The lower maintenance door 20 can close the installation frame 19 when the double-layer dust-free tunnel furnace is working and can be opened when it is necessary to install or maintain the long-shaft motor 17 on the lower furnace 6.

[0030] Reference Figures 1 to 6 As shown, an electric push rod 21 extending from its interior is provided on the upper furnace 5. The other end of the electric push rod 21 is connected to the furnace cover one 8. Through the setting of the above structure, when it is necessary to open the furnace cover one 8 on the upper furnace 5, only need to start the electric push rod 21 inside the upper furnace 5 to jack up one side of the furnace cover one 8, and the furnace cover one 8 will rotate and open on the upper furnace 5.

[0031] Reference Figures 1 to 7 As shown, this double-layer dust-free tunnel furnace uses two layers of conveyor belts 7 for conveying, which is only half the length of a single-layer tunnel furnace. The lifting mechanism controls the lifting of the furnace cover one 8, the upper furnace 5 and the furnace cover two 9 as a whole, overcoming the problem of inconvenient installation and maintenance operations of the double-layer tunnel furnace. Moreover, the upper and lower layers are structurally compact, with firm strength and reasonable layout. Filters 16 are installed inside both the upper furnace 5 and the lower furnace 6 to ensure the dust-free level of this double-layer dust-free tunnel furnace.

[0032] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A double-layer dust-free tunnel furnace, comprising an electric control box (1), a heating section 1 (2), a heating section 2 (3) and a cooling section (4) arranged in sequence, characterized in that: The electric control box (1) is electrically connected to the heating section 1 (2), the heating section 2 (3) and the cooling section (4); the heating section 1 (2), the heating section 2 (3) and the cooling section (4) all include an upper furnace (5) and a lower furnace (6); a conveyor mesh belt (7) is provided inside the upper furnace (5) and the lower furnace (6); a furnace cover 1 (8) and a furnace cover 2 (9) are provided above the upper furnace (5) and the lower furnace (6), respectively; one side of the furnace cover 1 (8) is rotatably connected to the top of the upper furnace (5); the furnace cover 2 (9) is fixedly connected to the bottom of the upper furnace (5); a lifting mechanism is provided on the bottom surface of the lower furnace (6); the other end of the lifting mechanism is connected to the furnace cover 2 (9).

2. A double-layer dust-free tunnel furnace according to claim 1, characterized in that: The lifting mechanism comprises a motor (10) and four fixed seats (11) located at the corners of the lower furnace (6); the fixed seat (11) is provided with a lifting rod (12) extending from the inside thereof; the other end of the lifting rod (12) is located inside the second furnace cover (9); the output shaft of the motor (10) is connected to the four lifting rods (12) through a transmission assembly.

3. A double-layer dust-free tunnel furnace according to claim 2, characterized in that: The transmission assembly comprises a plurality of connecting seats (13), two adjacent connecting seats (13) are connected by a transmission rod (14), and the connecting seat (13) and the fixed seat (11) are also connected by the transmission rod (14). The output shaft of the motor (10) extends into one of the connecting seats (13), and both ends of the output shaft of the motor (10) and the transmission rod (14) are fixedly connected with a bevel gear 1. The fixed seat (11) is rotatably connected with a bevel gear 2, which is sleeved on the lifting rod (12) and threadedly connected thereto. The adjacent two bevel gears 1 are meshed, and the bevel gear 1 is meshed with the adjacent bevel gear 2.

4. The double-layer dust-free tunnel furnace according to claim 1, characterized in that: A plurality of fans (15) are provided inside the furnace cover 1 (8) and the furnace cover 2 (9), filters (16) are provided below the fans (15), long shaft motors (17) for driving the fans (15) are provided on the furnace cover 1 (8) and the furnace cover 2 (9), and the furnace cover 1 (8) and the furnace cover 2 (9) are connected to the outside through exhaust pipes (18).

5. A double-layer dust-free tunnel furnace according to claim 4, characterized in that: The second furnace cover (9) is fixedly connected to the upper furnace (5) via a mounting frame (19); the long-axis motor (17) and the exhaust pipe (18) on the second furnace cover (9) are both located in the mounting frame (19), and the exhaust pipe (18) extends out from the mounting frame (19).

6. The double-layer dust-free tunnel furnace according to claim 5, characterized in that: The installation frame (19) is rotatably connected to a plurality of lower maintenance doors (20) for closing the installation frame.

7. The double-layer dust-free tunnel furnace according to claim 1, characterized in that: The upper furnace (5) is provided with an electric push rod (21) extending from the interior thereof, and the other end of the electric push rod (21) is connected to the furnace cover (8).

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