Graphite boat drying oven

Abstract

The utility model relates to a graphite boat drying oven, which is provided with a heating pipe for heating on the inner wall, and comprises four drying bins which are sequentially communicated end to end, a flow passing pipe allowing airflow to pass through is arranged between every two adjacent drying bins. An opening and closing device for controlling opening and closing of the overflowing pipe is arranged in the overflowing pipe; a centrifugal fan for blowing air towards the overflowing pipe is arranged in the drying bin; and the centrifugal fans in the adjacent drying bins face different flow passing pipes. The drying system is reasonable in structural design, and an efficient heat transfer and circulation system is constructed by designing the four elaborately-planned drying bins and the end-to-end communication design. Through the built-in opening and closing device and the overflowing pipe, circulation of airflow can be flexibly controlled, it is ensured that in the object taking stage, heat in the target drying bin can be rapidly removed and reduced, centralized recovery of the heat is achieved, and therefore the effects of saving energy and improving efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the field of drying devices, in particular to a graphite boat oven. Background Art

[0002] The graphite boat oven is specifically used for drying graphite parts and graphite frames, and is an essential equipment for drying the graphite boat after cleaning in the electronics industry. The Chinese patent document with the authorization announcement number CN211233689U discloses a graphite boat oven, specifically relating to the technical field of ovens, including a device body. The bottom end of the device body is fixedly connected with casters, the bottom end of the device body is fixedly installed with floor feet, the surface of the device body is fixedly installed with a hinge, the other end of the hinge is fixedly installed with a door, the surface of the door is fixedly connected with a door handle, the bottom end of the surface of the door is provided with a wind cap, the top end inside the device body is fixedly installed with a fixing plate, and the top end of the fixing plate is fixedly connected with a motor. By setting two sample racks in the utility model, and taking advantage of the fact that the sample racks are provided with two layers and each layer of the sample rack adopts a drawer type, when an operator places a graphite boat, the operator only needs to pull out the drawer type sample rack, and by using the limiting device in the sample rack, after the sample rack is pulled to a fixed position, the operator directly places the graphite boat on the sample rack, the operation is convenient, and the practicability is relatively strong. However, the existing oven can only take out the graphite boat after long-time cooling after drying, which increases the working time and causes heat waste due to reheating, affecting the working efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a graphite boat oven, which is used to solve the problem that the existing oven can only take out the graphite boat after long-time cooling after drying, increasing the working time and causing heat waste due to reheating, affecting the working efficiency.

[0004] To solve the above problems, the utility model provides a graphite boat oven, in which heating tubes for temperature rise are arranged on the inner wall, and it includes four drying chambers connected end to end in sequence; an overflow pipe for air flow to pass through is arranged between two adjacent drying chambers; an opening and closing device for controlling its opening and closing is arranged in the overflow pipe; a centrifugal fan for blowing air towards the overflow pipe is arranged in the drying chamber; and the centrifugal fans in adjacent drying chambers face different overflow pipes.

[0005] The graphite boat oven provided by the utility model further has the following technical features:

[0006] Further, the opening and closing device includes a support frame, a plurality of hinge shafts spacedly hinged on the support frame, a sealing plate fixed on the hinge shafts, an electric actuator for driving the hinge shafts to rotate, and a gear set for driving the plurality of hinge shafts to rotate synchronously.

[0007] Further, a pressure relief pipe communicating with the outside is provided on the side wall of the drying bin; an electromagnetic valve for controlling its opening and closing is provided on the pressure relief pipe.

[0008] Further, a plurality of horizontally pull-out racks and sliding channels for supporting the sliding of the racks are provided in the drying bin.

[0009] Further, a plurality of flow-through holes are provided on the rack at intervals; the flow-through holes are designed in a strip shape and are arranged perpendicular to the sliding channel along their length direction.

[0010] Further, the airflow in a plurality of the drying bins forms a counterclockwise flowing airflow; the centrifugal fans in the two left drying bins are both arranged on the lowermost rack; the centrifugal fans in the two right drying bins are both arranged on the uppermost rack.

[0011] The utility model has the following beneficial effects: The structure of the utility model is reasonably designed and simple. By designing four carefully planned drying bins, these drying bins not only increase the capacity of the oven, but also construct an efficient heat transfer and circulation system through the design of connecting the head and the tail. Flow-through pipes are ingeniously arranged between each drying bin. These flow-through pipes are not only channels for airflow transmission, but also the key to achieving uniform temperature distribution. Through the built-in opening and closing device, the flow-through pipes can flexibly control the flow of air, ensuring that the heat in the target drying bin can be quickly removed and the temperature can be reduced during the material taking stage, and the heat can be centrally recovered, thereby achieving the effects of energy saving and efficiency improvement. Description of the Drawings

[0012] Figure 1 is a schematic structural diagram of an embodiment of the utility model;

[0013] Figure 2 is an internal structural diagram of an embodiment of the utility model;

[0014] Figure 3 is a structural sectional view of an embodiment of the utility model;

[0015] Figure 4 is a schematic diagram of the airflow circulation of an embodiment of the utility model;

[0016] Figure 5 is a schematic structural diagram of the opening and closing device of an embodiment of the utility model;

[0017] Figure 6 is a schematic structural diagram of the opening and closing device of an embodiment of the utility model;

[0018] In the figure: 1 - drying bin, 11 - heating pipe, 12 - centrifugal fan, 13 - slideway, 14 - pressure relief pipe, 15 - solenoid valve, 2 - overflow pipe, 3 - opening and closing device, 31 - support frame, 32 - hinge shaft, 33 - sealing plate, 34 - electric actuator, 35 - gear set, 4 - storage rack, 41 - overflow hole. Specific embodiments

[0019] In the following, the present utility model will be described in detail with reference to the accompanying drawings and in conjunction with embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0020] As Figures 1 to 6 In an embodiment of the graphite boat oven of the present utility model shown in the figure, heating pipes 11 for temperature rise are provided on the inner wall of the graphite boat oven, and the oven has four drying bins 1 that are sequentially connected end to end; an overflow pipe 2 for air flow to pass through is provided between two adjacent drying bins 1; an opening and closing device 3 for controlling its opening and closing is provided in the overflow pipe 2; a centrifugal fan 12 for blowing air towards the overflow pipe 2 is provided in the drying bin 1; and the centrifugal fans 12 in adjacent drying bins 1 face different overflow pipes 2. By designing four carefully planned drying bins, these drying bins not only increase the capacity of the oven, but also build an efficient heat transfer and circulation system through the end-to-end connection design. An overflow pipe is cleverly arranged between each drying bin. These overflow pipes are not only channels for air flow transmission, but also the key to achieving uniform temperature distribution. Through the built-in opening and closing device, the overflow pipe can flexibly control the air flow, ensuring that during the stage of taking objects, the heat in the target drying bin can be quickly removed, reducing the heat, and realizing the centralized recovery of heat, thereby achieving the effects of energy saving and efficiency improvement.

[0021] Specifically, the opening and closing device 3 includes a support frame 31, a plurality of hinge shafts 32 that are spaced and hinged on the support frame 31, a sealing plate 33 fixed on the hinge shafts 32, an electric actuator 34 for driving the hinge shafts 32 to rotate, and a gear set 35 for driving the plurality of hinge shafts 32 to rotate synchronously. The gears fixed on the hinge shafts cooperate with the racks connecting the plurality of gears to form a gear set. The innovation of the opening and closing device lies in the linkage between its electric actuator and the gear set, realizing the synchronous and precise control of a plurality of hinge shafts and sealing plates, not only improving the automation level, but also ensuring the stability and durability of the structure.

[0022] Specifically, a pressure relief pipe 14 communicating with the outside is provided on the side wall of the drying bin 1; a solenoid valve 15 for controlling its opening and closing is provided on the pressure relief pipe 14. The oven is also equipped with a combination of a pressure relief pipe and a solenoid valve, which is an important part of the safety guarantee. When taking objects and concentrating the hot air flow into other drying bins, when the pressure rises abnormally, the solenoid valve can respond quickly, open the pressure relief pipe to release the excess pressure, effectively avoiding potential safety hazards and ensuring the stable operation of the oven.

[0023] Specifically, a plurality of horizontally pull-out racks 4 and slideways 13 for supporting the sliding of the racks 4 are provided in the drying bin 1.

[0024] Specifically, a plurality of flow-through holes 41 are provided on the rack 4 at intervals; the flow-through holes 41 are designed to be long strip-shaped and are arranged perpendicular to the slideway 13 along their length direction. In order to further improve the drying efficiency and flexibility, a plurality of horizontally pull-out racks are designed in the oven. These racks not only facilitate the placement and removal of materials, but also promote the uniform distribution of air flow among the materials through the long strip-shaped flow-through hole design on them. The length direction of the flow-through holes is perpendicular to the slideway, enabling the air flow to penetrate the material layer more effectively and accelerating the drying process.

[0025] Specifically, a counterclockwise flowing air current is formed in the air in a plurality of drying bins 1; the centrifugal fans 12 in the two left drying bins 1 are both arranged on the lowermost rack 4; the centrifugal fans 12 in the two right drying bins 1 are both arranged on the uppermost rack 4.

[0026] Working principle: The staff puts the objects to be dried into the drying bin 1 for heating and drying. During the drying process, the opening and closing device 3 controls the flow-through pipe 2 to be in an open state, and each centrifugal fan 12 starts at the lowest gear, driving the hot air current to circulate in a plurality of drying bins 1, so as to uniformly dry the objects on the multi-layer racks 4. After reaching the predetermined time, the drying bin 1 corresponding to the object to be taken is set as No. 1, and the other drying bins 1 are sequentially sorted counterclockwise as No. 2, No. 3, and No. 4. The opening and closing device 3 between the No. 1 drying bin 1 and the No. 4 drying bin 1 is closed, the centrifugal fan 12 in the No. 1 drying bin 1 for taking the object is adjusted to the maximum gear, and the solenoid valve 15 on its side wall is opened, quickly discharging the internal hot air current of the No. 1 drying bin 1 into the No. 2 drying bin 1. At the same time, the solenoid valve 15 on the No. 4 drying bin 1 is opened for pressure relief. After a period of time, the door of the No. 1 drying bin 1 is opened, the object is taken out, and the object to be dried is put in. After closing the door, the opening and closing device 3 between the No. 1 drying bin 1 and the No. 4 drying bin 1 is opened, and all solenoid valves are closed, quickly transferring the heat in the other drying bins to the No. 1 drying bin 1, quickly raising the temperature, and improving the drying efficiency.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A graphite boat oven is provided with heating tubes (11) for temperature rise on the inner wall, and is characterized in that: It includes four drying bins (1) connected end to end in sequence; an air flow pipe (2) for air flow to pass through is provided between two adjacent drying bins (1); a switching device (3) for controlling its opening and closing is provided in the air flow pipe (2); a centrifugal fan (12) for blowing air towards the air flow pipe (2) is provided in the drying bin (1); and the centrifugal fans (12) in adjacent drying bins (1) face different air flow pipes (2).

2. The graphite boat oven according to claim 1, wherein: The switching device (3) includes a support frame (31), a plurality of hinge shafts (32) spaced and hinged on the support frame (31), a sealing plate (33) fixed on the hinge shafts (32), an electric actuator (34) for driving the hinge shafts (32) to rotate, and a gear set (35) for driving the plurality of hinge shafts (32) to rotate synchronously.

3. The graphite boat oven according to claim 1, characterized in that: A pressure relief pipe (14) communicating with the outside is provided on the side wall of the drying bin (1); a solenoid valve (15) for controlling its opening and closing is provided on the pressure relief pipe (14).

4. The graphite boat oven according to claim 1, characterized in that: A plurality of horizontally pullable storage racks (4) and slide ways (13) for supporting the sliding of the storage racks (4) are provided in the drying bin (1).

5. The graphite boat oven according to claim 4, characterized in that: A plurality of flow holes (41) are provided on the storage rack (4) at intervals; the flow holes (41) are designed in a long strip shape and are arranged perpendicular to the slide way (13) along its length direction.

6. The graphite boat oven according to claim 4, characterized in that: The air flow in the plurality of drying bins (1) forms a counterclockwise air flow; the centrifugal fans (12) in the two left drying bins (1) are both arranged on the lowermost storage rack (4); the centrifugal fans (12) in the two right drying bins (1) are both arranged on the uppermost storage rack (4).

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