Drying furnace

Abstract

The utility model relates to the field of drying equipment, and particularly discloses a drying oven which comprises an oven body, an oven door, a vertical sliding rail, a pulley mechanism, a parallel connecting rod mechanism and a cable descending mechanism, the vertical sliding rail is arranged on one side of the oven body, one end of the parallel connecting rod mechanism is connected to the side wall of the oven door, and the pulley mechanism is slidably connected to the side, close to the oven body, of the vertical sliding rail. The cable descending mechanism is arranged on the furnace body, the furnace door is connected to the lifting end of the cable descending mechanism, and one end of the parallel connecting rod mechanism is connected with the pulley mechanism. According to the drying furnace, feeding and discharging are convenient, arrangement of heating elements is also convenient, and damage to the heating elements is small.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment, specifically a drying oven. Background Technology

[0002] Large annealing furnaces are generally used when drying glass molten material. Using this equipment brings many problems. For example, when the temperature is high and the negative pressure inside the furnace is high, it is very difficult to open the furnace door manually. Turning the furnace door requires manual operation, which is strenuous and time-consuming, and is not convenient for multiple loading and unloading operations. In addition, loading and unloading are generally done by forklifts. During the loading and unloading process, the forks can easily cause the rack to scrape against the furnace wall, damaging the exposed heating elements. The heating elements are generally placed locally at the bottom and sides of the furnace body, which can easily cause the front of the furnace chamber to be blocked by goods. Utility Model Content

[0003] The purpose of this utility model is to provide a drying oven that facilitates loading and unloading of materials, as well as the arrangement of heating elements, and minimizes damage to the heating elements.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A drying oven includes an oven body, an oven door, a vertical slide rail, a pulley mechanism, a parallel linkage mechanism, and a cable descent mechanism. The vertical slide rail is disposed on one side of the oven body. One end of the parallel linkage mechanism is connected to the side wall of the oven door. The pulley mechanism is slidably connected to the vertical slide rail near the oven body. The cable descent mechanism is disposed on the oven body. The oven door is connected to the lifting end of the cable descent mechanism. One end of the parallel linkage mechanism is connected to the pulley mechanism.

[0006] In a further embodiment, the pulley mechanism includes at least two pulleys, and a limiting groove is provided on the side wall of the vertical slide rail near the furnace body. The at least two pulleys are slidably connected in the limiting groove in sequence, and the parallel linkage mechanism is hinged to the wheel axle of the pulley.

[0007] In a further embodiment, the parallel linkage mechanism includes at least two parallel links, one end of which is hinged to the axle of the pulley, and the other end of which is hinged to the side wall of the furnace door.

[0008] In a further design, a reinforcing connector is used to connect the axles of the two pulleys.

[0009] A further embodiment also includes a drying element, wherein the furnace body has double-layer furnace walls, and the drying element is disposed between the double-layer furnace walls or inside the furnace door.

[0010] In a further embodiment, the inner wall of the furnace body is provided with ventilation holes that communicate with the furnace chamber.

[0011] In a further embodiment, an insulation layer is filled between the two furnace walls.

[0012] In a further embodiment, a detector is provided on one side of the furnace door to detect whether the furnace door is open or closed properly.

[0013] In a further embodiment, a dehumidifying fan is connected to the top of the furnace chamber via a pipe.

[0014] In a further embodiment, a water collection and release valve is connected to the lowest point of the pipeline.

[0015] The beneficial effects of this utility model are:

[0016] This invention uses a parallel linkage mechanism to drive the furnace door to rotate upward along the pulley mechanism as it rises with the cable descent mechanism, thereby opening the door forward. Simultaneously, as it descends with the cable descent mechanism, it rotates downward, thereby closing the door. This achieves automatic opening of the furnace door in a wide range of vertical directions, reducing the opening force and facilitating the loading and unloading of materials and the continuous monitoring of the drying status of glass and other materials inside the furnace. In addition, the parallel linkage mechanism can provide a certain pulling force to the furnace door, allowing it to be pressed tightly against the furnace body.

[0017] Since the side of the furnace door closest to the furnace body always faces the furnace body when opening or closing, it can avoid collisions with external forklifts and other feeding mechanisms. Therefore, this side can be used to arrange heating elements, which can avoid damage. It can also directly heat the material at the front end of the furnace body, so that the heating effect at the front end of the furnace body can be the same as that at the other heating element ends, which can make the drying of materials more uniform. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a side view schematic diagram of a drying oven according to an embodiment of this utility model;

[0020] Figure 2 This is a schematic diagram of the furnace door connection in an embodiment of this utility model;

[0021] In the diagram: 1. Furnace body; 2. Furnace door; 3. Vertical slide rail; 4. Pulley mechanism; 41. Pulley; 42. Reinforcing connector; 5. Parallel linkage mechanism; 51. Linkage; 6. Cable descent mechanism; 61. Steel cable; 62. Rotating mechanism; 621. Sprocket; 622. Chain; 623. Motor; 624. Rotating shaft; 63. Winding reel; 7. Detector; 8. Dehumidifying fan; 9. Water collection and release valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 As shown, a drying oven includes an oven body 1, an oven door 2, a vertical slide rail 3, a pulley mechanism 4, a parallel linkage mechanism 5, and a cable descent mechanism 6. The vertical slide rail 3 is located on one side of the oven body 1. One end of the parallel linkage mechanism 5 is connected to the side wall of the oven door 2. The pulley mechanism 4 is slidably connected to the side of the vertical slide rail 3 near the oven body 1. The cable descent mechanism 6 is located on the oven body 1. The oven door 2 is connected to the lifting end of the cable descent mechanism 6. One end of the parallel linkage mechanism 5 is connected to the pulley mechanism 4.

[0024] Its working principle is as follows: the drying element dries the material inside the furnace body 1. The upper wall prevents damage to the drying element during loading and unloading. The descent mechanism 6 pulls the furnace door 2, causing the parallel linkage mechanism 5 of the furnace door 2 to rotate upwards, opening the furnace door 2. As the parallel linkage mechanism 5 rises with the furnace door 2, it drives the pulley mechanism 4 to slide upwards within the vertical slide rail 3, thus limiting the rotation angle of the furnace door 2. Once fully open, the pulley mechanism 4 rises to the top of the vertical slide rail 3 and is stopped. When the descent mechanism 6 lowers the furnace door 2, it drives the parallel linkage mechanism 5 of the furnace door 2 to rotate downwards, simultaneously causing the pulley mechanism 4 to slide downwards within the vertical slide rail 3. The furnace door 2 slowly returns to its original position and closes onto the furnace body 1. At this point, the pulley mechanism 4 is located at the lower end of the vertical slide rail 3 and is stopped. This facilitates loading and unloading of materials into the furnace body 1 and prevents deformation of the latches and other components due to high temperatures, as well as personnel injury.

[0025] Based on the above working principle, some implementation methods or structures are provided, such as... Figure 2 The pulley mechanism 4 shown includes at least two pulleys 41. A limiting groove is provided on the side wall of the vertical slide rail 3 near the furnace body 1. At least two pulleys 41 are sequentially slidably connected within the limiting groove. A parallel linkage mechanism 5 is hinged to the wheel axle of the pulleys 41. By the rolling of the pulleys 41 and the vertical limiting parallel linkage mechanism 5, the upward stroke of the pulleys 41 can be increased. The greater the upward distance of the furnace door 2, the larger the opening, and the easier it is to load materials. Simultaneously, the pulleys 41 reduce the friction between themselves and the vertical slide rail 3, making the rise of the furnace door 2 easier, lighter, and more stable.

[0026] The parallel linkage mechanism 5 includes at least two parallel links 51. One end of each link 51 is hinged to the axle of the pulley 41, and the other end is hinged to the side wall of the furnace door 2. This allows the furnace door 2 to expand outward at a greater angle when opened, and when closed, the links 51 can be pulled obliquely, providing a horizontal component force to make the seal between the door and the furnace door 2 tighter, even achieving a direct compression seal. It is conceivable that multiple parallel links 51 and pulleys 41, such as three, can also constitute the aforementioned parallel linkage mechanism 5 and pulley mechanism 4.

[0027] A reinforcing connector 42 connects the axles of the two pulleys 41.

[0028] The furnace body 1 has double-layer furnace walls, with the drying element disposed between the two layers. Ventilation holes communicating with the furnace chamber are provided on the inner layer of the furnace wall 1, located on the side and bottom of the inner layer. The drying element is connected to one side of the ventilation holes.

[0029] An insulation layer is filled between the two furnace walls. This improves the insulation effect of furnace body 1 and saves energy.

[0030] A detector 7 is installed on one side of the furnace door 2 to detect whether the furnace door 2 is open or closed. When the detector 7 detects that the door is in position, it can control the cable descent mechanism 6 to stop stretching or lowering the furnace door 2, which makes the operation safer.

[0031] A dehumidifying fan 8 is connected to the top of the furnace chamber of furnace body 1 via a pipe. The dehumidifying fan 8 facilitates the circulation of heat inside the furnace and also facilitates the removal of moisture.

[0032] The lowest point of the pipeline is connected to a water collection and release valve 9. The water collection and release valve 9 can remove excess condensate in a timely manner to prevent backflow, and can also increase the dehumidification effect and improve the drying quality.

[0033] The rappelling mechanism 6 can be composed of a steel cable 61, a rotating mechanism 62, and a winding reel 63. The winding reel 63 is connected to the rotating end of the rotating mechanism 62. The rotating mechanism 62 can be a structure composed of a sprocket 621, a chain 622, a motor 623, and a rotating shaft 624. The motor 623 is connected to the sprocket. 621 、 chain 622 The rotating shaft 624 is driven to rotate, and the rotating shaft 624 drives the winding disc 63 fixedly connected to it to rotate. The winding disc 63 winds the steel cable 61, thereby driving the furnace door 2 connected to the steel cable 61 to rise or fall. Specifically, the furnace door 2 is raised and lowered, saving space. It is conceivable that the cable lowering mechanism 6 can also be other electric retraction structures, such as referring to the structure of the existing overhead crane to realize the lifting and lowering of the furnace door 2.

[0034] In some embodiments, the furnace body 1 is designed with a stainless steel material rack inside the furnace chamber to facilitate the loading and unloading of the material box. The insulation layer of this drying furnace is filled with aluminum silicate fiber cotton, which has excellent insulation performance, and the surface temperature rise is less than or equal to 45°C when the furnace chamber temperature is 500°C.

[0035] The inner wall of furnace body 1 is sealed with 316L stainless steel to achieve the purpose of anti-oxidation and high temperature resistance. External dimensions of the enclosure: L3200×W2500×H2200mm; Internal dimensions: L2400×W2000×H1200mm; Matching material tray dimensions: L1000×W950×H150mm, made of aluminum; Rated installed power: ~120KW / 380V, three-phase four-wire, power adjustable; Design maximum operating temperature greater than or equal to 500℃; Heating method: U-shaped 310S stainless steel electric heating tube heating, one hot air circulation temperature control point in the furnace chamber; Temperature control method: PID intelligent 6-18 segment program temperature control system, SCR silicon controlled rectifier module control, automatic constant temperature, adjustable temperature, fault alarm, automatic power off after program completion, no need for on-site operation; Matching hot air circulation fan 1 (6KW / 380V), matching power dehumidification fan 81 units (1.5Kw / 380V frequency converter); Control cabinet integrated with furnace body 1, touch screen control interface.

[0036] Feeding method: The full material boxes are placed on the feeding platform made of 316L stainless steel square tubes. Two material boxes are placed on each platform, and six material boxes are placed on three-layer platforms. Each furnace is fed with two rows and three layers of material boxes, totaling 12 material boxes.

[0037] The feeding and discharging method is as follows: first, place the crucibles filled with material on each layer of the material rack, and then use a forklift to stack each layer of material rack into the furnace chamber of the drying furnace.

[0038] Drying temperature process: Start at room temperature for 2-3 hours to reach 450℃; maintain 450℃ for 5-8 hours; then cool down to about 100℃ using a rapid air cooling mechanism before unloading. The process time is adjustable.

[0039] Dehumidification method: Three exhaust ports are installed on the upper part of the rear wall of the drying furnace and connected to the pipes of the dehumidifying fan 8. Dehumidification is achieved through the external main pipeline. In order to prevent condensate from returning to the furnace, it needs to be released regularly.

[0040] The dehumidifier fan 8 is a variable frequency speed control fan. The exhaust volume is automatically controlled by the PLC program according to the amount of dehumidification at different temperature points to achieve the best energy-saving effect. The exhaust pipe needs to lead to the outside of the workshop with a total length of about 15 meters. Three fresh air inlets are designed on each side of the furnace body 1. Manual adjustment valves are designed. When rapid cooling is started, the gate valve is opened manually to adjust the cooling air intake. The dehumidifier fan 8 and the cooling exhaust fan share one unit and have different functions at different times.

[0041] It should be noted that the terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A drying oven, characterized in that, The furnace includes a furnace body (1), a furnace door (2), a vertical slide rail (3), a pulley mechanism (4), a parallel linkage mechanism (5), and a descent mechanism (6). The vertical slide rail (3) is located on one side of the furnace body (1). One end of the parallel linkage mechanism (5) is connected to the side wall of the furnace door (2). The pulley mechanism (4) is slidably connected to the vertical slide rail (3) near the furnace body (1). The descent mechanism (6) is located on the furnace body (1). The furnace door (2) is connected to the lifting end of the descent mechanism (6). One end of the parallel linkage mechanism (5) is connected to the pulley mechanism (4).

2. The drying oven according to claim 1, characterized in that, The pulley mechanism (4) includes at least two pulleys (41). The vertical slide rail (3) is provided with a limiting groove on the side wall near the furnace body (1). The at least two pulleys (41) are slidably connected in the limiting groove in sequence. The parallel linkage mechanism (5) is hinged to the wheel axle of the pulley (41).

3. A drying oven according to claim 2, characterized in that, The parallel linkage mechanism (5) includes at least two parallel links (51), one end of which is hinged to the axle of the pulley (41), and the other end of which is hinged to the side wall of the furnace door (2).

4. A drying oven according to claim 2, characterized in that, A reinforcing connector (42) connects the axles of the two pulleys (41).

5. A drying oven according to claim 1, characterized in that, It also includes a drying element, the furnace body (1) has a double furnace wall, and the drying element is disposed between the double furnace walls or inside the furnace door (2).

6. A drying oven according to claim 5, characterized in that, The inner wall of the furnace body (1) is provided with ventilation holes that communicate with the furnace chamber.

7. A drying oven according to claim 5, characterized in that, An insulation layer is filled between the two furnace walls.

8. A drying oven according to claim 1, characterized in that, A detector (7) is provided on one side of the furnace door (2) to detect whether the furnace door (2) is open or closed.

9. A drying oven according to claim 1, characterized in that, The top of the furnace chamber of the furnace body (1) is connected to a dehumidifying fan (8) via a pipe.

10. A drying oven according to claim 9, characterized in that, The lowest point of the pipeline is connected to a water collection and release valve (9).

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