Box furnace door sealing and flow guiding device

Abstract

The utility model discloses a kind of box furnace door sealing and flow guide device of reinforced convection, belong to box furnace door sealing technical field, the device includes furnace body, furnace door plate, be set on the wave-shaped flow guide fin of two side walls in furnace body and be installed on the sealing convection mechanism of furnace door plate, the sealing convection mechanism includes the flow guide plate with multiple flow guide holes and the sealing strip with trapezoidal cross section, when furnace door is closed, specific flow guide passage is formed between flow guide plate and wave-shaped flow guide fin, gas enters passage and forms reinforced convection through flow guide hole, while trapezoidal sealing strip and sealing insert bar jointly act to realize double sealing.The utility model passes through reinforced convection, significantly improves furnace temperature uniformity and heating efficiency;Through optimization sealing structure, effectively prevent heat loss, save energy, and sealing effect is reliable, and automatic switching can be realized.

Description

Technical Field

[0001] This utility model relates to the field of box furnace door sealing technology, and in particular to a box furnace door sealing and guiding device that enhances convection. Background Technology

[0002] Box furnaces are widely used heating equipment in industrial production and laboratories. They are mainly used for heat treatment processes such as heating, annealing, and quenching of workpieces. Their basic structure usually includes a furnace body that provides heating space and a furnace door for sealing the furnace body opening.

[0003] In existing technologies, the furnace door of a box furnace mainly relies on a simple sealing strip to contact the furnace frame to seal the furnace chamber and prevent internal heat loss. However, during long-term use, especially under high temperature and frequent opening and closing conditions, the sealing material is prone to aging, hardening, or permanent deformation, resulting in gaps between the furnace door and the furnace body. These gaps cause hot gas inside the furnace to leak out directly, leading to not only a large amount of energy waste but also affecting the stability and control accuracy of the furnace temperature.

[0004] In addition, the heat transfer inside a traditional box furnace mainly relies on the natural convection of hot air. Due to density differences, the hot air flows slowly and randomly inside the furnace. This natural convection is inefficient and easily creates "dead zones" with uneven temperatures inside the furnace, especially in the corners of the furnace or areas blocked by large workpieces. The unevenness of the temperature field inside the furnace will directly lead to uneven heating of the workpieces being processed, thus seriously affecting the quality of heat treatment and the consistency of the products.

[0005] Therefore, this utility model proposes a box-type furnace door sealing and guiding device to enhance convection and overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems in the existing technology of box furnaces, such as poor sealing performance due to simple furnace door sealing structure, easy heat leakage, and uneven temperature field due to reliance on natural convection for heat transfer inside the furnace, which affects the processing quality, this utility model aims to provide a box furnace door sealing and flow guiding device with improved structure that can effectively solve the above problems.

[0007] This utility model provides a box-type furnace door sealing and guiding device for enhancing convection, comprising: a furnace body, and a furnace door plate that can be opened and closed at the opening of the furnace body; as well as corrugated guiding fins and a sealing and convection mechanism installed on the furnace door plate.

[0008] The sealing convection mechanism includes a guide plate and a trapezoidal sealing strip, and the surface of the guide plate has multiple guide holes.

[0009] Furthermore, the corrugated guide fins are disposed on the inner two side walls of the furnace body. When the furnace door is closed, the guide plate and the corrugated guide fins are combined by defining a guide channel. At the same time, the trapezoidal sealing strip is disposed between the furnace door and the furnace body and is pressed to achieve a seal.

[0010] Preferably, the cross-section of the trapezoidal sealing strip is a trapezoid with a narrower upper base and a wider lower base.

[0011] Preferably, the sealing convection mechanism further includes an installation groove and a sealing strip; the trapezoidal sealing strip is accommodated in the installation groove; when the furnace door is closed, the sealing strip is inserted into the installation groove and comes into close contact with the trapezoidal sealing strip.

[0012] Preferably, the enhanced convection box furnace door sealing and guiding device further includes an automatic door opening mechanism for driving the furnace door plate to move.

[0013] Preferably, the automatic door opening mechanism includes a motor, a gear linked to the motor, a connecting rod connected to the furnace door panel, and a toothed groove provided on the connecting rod, wherein the gear meshes with the toothed groove.

[0014] Preferably, the automatic door opening mechanism further includes a tapered rod disposed on the furnace door panel and a positioning hole disposed on the furnace body, wherein the tapered rod is inserted into the positioning hole when the furnace door panel is closed to achieve alignment.

[0015] Preferably, the automatic door opening mechanism further includes a limiting seat for supporting and guiding the connecting rod, and the bottom of the limiting seat is provided with a rolling shaft.

[0016] Preferably, the automatic door opening mechanism further includes rollers installed on the outer wall of the furnace body, and the connecting rod is slidably supported on the rollers.

[0017] Preferably, the trapezoidal sealing strip is made of high-temperature resistant rubber.

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model, by setting up a guide plate and a corrugated guide fin, together form a specific guide channel when the furnace door is closed, actively guiding the hot air flow inside the furnace, solving the problem of uneven heat distribution caused by the reliance on natural convection in existing box furnaces, and achieving the technical effects of strengthening gas convection inside the furnace, making the furnace temperature more uniform, and improving heating efficiency and processing quality.

[0020] 2. This utility model, by adopting a double sealing structure of a trapezoidal sealing strip that is narrow at the top and wide at the bottom and a sealing insert, can more fully fill the gaps and form a reliable physical barrier when the furnace door is closed. This solves the problems of poor furnace door sealing, heat leakage and energy waste in the prior art, and achieves the technical effect of significantly improving the sealing performance of the furnace door and ensuring stable furnace temperature.

[0021] 3. This utility model solves the problems of laborious manual opening and closing of furnace doors, uneven closing pressure, and inaccurate alignment by setting up an automatic door opening mechanism composed of a motor, gear teeth, and connecting rod, and supplementing it with a conical rod and positioning hole for precise positioning. It achieves the technical effect of realizing automated and labor-saving opening and closing of furnace doors, and ensuring that each closing is precisely aligned and the sealing effect is consistent and reliable.

[0022] 4. This utility model solves the problem of high friction and uneven movement of the connecting rod during sliding by setting a rolling shaft and rollers on the movement path of the connecting rod of the automatic door opening mechanism. This achieves the technical effects of reducing the running resistance of the mechanism, making the opening and closing process of the furnace door more stable and smooth, and extending the service life of the mechanism. Attached Figure Description

[0023] Figure 1 This is a perspective view of a box-type furnace door sealing and guiding device for enhancing convection proposed in this utility model;

[0024] Figure 2 This is a partial structural exploded view of a box-type furnace door sealing and guiding device for enhancing convection proposed in this utility model;

[0025] Figure 3 This is a structural exploded view of the sealing and convection mechanism of a box-type furnace door sealing and guiding device for enhancing convection proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the corrugated guide fins of a box-type furnace door sealing and guiding device for enhancing convection proposed in this utility model.

[0027] Legend:

[0028] 1. Furnace body; 2. Sealing convection mechanism; 201. Mounting groove; 202. Trapezoidal sealing strip; 203. Sealing insert; 204. Guide plate; 205. Guide hole; 206. Corrugated guide fins; 3. Furnace door panel; 4. Automatic door opening mechanism; 401. Limit seat; 402. Rolling shaft; 403. Connecting rod; 404. Roller; 405. Motor; 406. Gear; 407. Gear groove; 408. Positioning hole; 409. Conical rod. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Example:

[0031] Please refer to Figures 1 to 4 This utility model provides a box furnace door sealing and guiding device to enhance convection, which aims to solve the problems of heat loss caused by poor door sealing in existing box furnaces and uneven heat distribution caused by natural convection inside the furnace.

[0032] like Figure 1 and Figure 2 As shown, the enhanced convection box furnace door sealing and guiding device includes a furnace body 1 and a furnace door plate 3 that can be opened and closed at the opening of the furnace body 1. The furnace body 1 serves as the main body for the installation of the entire device and provides heating space. The furnace door plate 3 is used to close the opening of the furnace body 1. A sealing convection mechanism 2 is installed on the furnace door plate 3. The device also includes an automatic door opening mechanism 4. The automatic door opening mechanism 4 is used to drive the furnace door plate 3 to reciprocate relative to the furnace body 1 to achieve automatic opening and closing.

[0033] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the box-type furnace door sealing and guiding device for enhancing convection also includes corrugated guiding fins 206 disposed on the inner side walls of the furnace body 1, and a specific structural cooperation relationship is formed between the sealing convection mechanism 2 and the corrugated guiding fins 206.

[0034] Please refer to the following carefully. Figure 1 , Figure 3 and Figure 4 The structure will be described in detail below:

[0035] The sealing convection mechanism 2 is installed on the furnace door panel 3. It includes a trapezoidal sealing strip 202, an installation groove 201, a sealing insert 203, and a guide plate 204. The trapezoidal sealing strip 202 is made of high-temperature resistant rubber, and its cross-section is a trapezoid with a narrower top and a wider bottom. The trapezoidal sealing strip 202 is accommodated in the installation groove 201. The surface of the guide plate 204 has multiple guide holes 205. During the process of the furnace door panel 3 closing and fitting with the furnace body 1, the trapezoidal sealing strip 202 is squeezed by the furnace door panel 3 and the furnace body 1 to fill the gap between them. At the same time, the sealing insert 203 is inserted into the installation groove 201 and fits into the trapezoidal sealing strip 204. The seal 202 is in close contact, and this structural combination ensures an efficient seal between the furnace door and the furnace body. At the same time, when the furnace door 3 is closed, the guide plate 204 and the corrugated guide fins 206 on the inner wall of the furnace body 1 define a guide channel. During the heating process, the gas inside the furnace body 1 enters the guide channel through the guide hole 205, and under the joint guidance of the guide hole 205 and the corrugated guide fins 206, a more reasonable convection path is formed. This structural design transforms the disordered natural convection inside the furnace into ordered enhanced convection, so that heat can be transferred more evenly to all parts of the furnace.

[0036] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0037] In a preferred embodiment, the automatic door opening mechanism 4 is used to drive the furnace door panel 3 to achieve automatic opening and closing. Please refer to [reference needed]. Figure 2 The automatic door opening mechanism 4 includes a motor 405, a gear 406, a connecting rod 403, and a tooth groove 407. The motor 405 is installed on the outside of the furnace body 1 by a fixed connection. The gear 406 is linked to the output shaft of the motor 405. The connecting rod 403 is fixedly connected to the furnace door panel 3. The tooth groove 407 is provided on the connecting rod 403. The gear 406 and the tooth groove 407 always maintain a meshing transmission relationship.

[0038] As another preferred embodiment, in order to achieve precise alignment when the furnace door panel 3 is closed, the automatic door opening mechanism 4 also includes a tapered rod 409 and a positioning hole 408. The tapered rod 409 is provided on the furnace door panel 3, and the positioning hole 408 is correspondingly provided on the furnace body 1. When the furnace door panel 3 is about to be completely closed, the front end of the tapered rod 409 will be inserted into the positioning hole 408 before the furnace door panel 3, thereby guiding and precisely positioning the furnace door panel 3.

[0039] In another preferred embodiment, to ensure the smooth and stable movement of the connecting rod 403, the automatic door opening mechanism 4 further includes a limiting seat 401, a rolling shaft 402, and a roller 404. The limiting seat 401 is used to support and guide the connecting rod 403. The rolling shaft 402 is located at the bottom of the limiting seat 401, and the roller 404 is installed on the outer wall of the furnace body 1. The connecting rod 403 forms a rolling engagement with the limiting seat 401 through the rolling shaft 402 and is slidably supported on the roller 404. This structure significantly reduces the friction of the connecting rod 403 during reciprocating motion.

[0040] Working principle: When in use, the furnace door panel 3 is placed on the furnace body 1. During the process of the furnace door panel 3 and the furnace body 1 being in contact, the sealing convection mechanism 2 exerts a medium pressure effect. The furnace door panel 3 and the furnace body 1 work together to compress the trapezoidal sealing strip 202. The sealing convection mechanism 2 is made of high-temperature resistant rubber and has a trapezoidal cross-section, narrow at the top and wide at the bottom. This design allows the trapezoidal sealing strip 202 to better fill the gap between the furnace door panel 3 and the furnace body 1 when the furnace door panel 3 is closed, improving the sealing effect. Furthermore, when the furnace door panel 3 is closed, the sealing insert 203 is inserted into the mounting groove 201 and makes close contact with the trapezoidal sealing strip 202, further enhancing the sealing performance. The surface of the guide plate 204 is provided with multiple guide holes 205. Corrugated guide fins 206 are installed on both sides of the inner wall of the furnace body 1. The corrugated guide fins 206 are corrugated and cooperate with the guide plate 204. When the furnace door 3 is closed, a guide channel is formed between the guide plate 204 and the corrugated guide fins 206. During the heating process, the gas in the furnace body 1 enters the guide channel through the guide hole 205. Under the guidance of the guide hole 205 and the corrugated guide fins 206, a more reasonable convection path is formed, which enhances gas convection and allows heat to be transferred more evenly to all parts of the furnace.

[0041] Furthermore, in the automatic door opening mechanism 4, the starting motor 405 can drive the gear 406 to rotate. By controlling the forward or reverse rotation of the motor 405, the gear 406 can be driven to rotate forward or reverse. Thus, through the meshing connection between the gear 406 and the tooth groove 407, the two connecting rods 403 can be driven to slide back and forth. Since rollers 404 are provided on both the left and right sides of the outer wall of the furnace body 1, and rolling shafts 402 are provided at the bottom of multiple limit seats 401, the friction between the connecting rods 403 and the corresponding limit seats 401 can be reduced, thus making the connecting rods 403 move more smoothly. When the furnace door panel 3 approaches the furnace body 1, the tapered rod 409 will gradually insert into the corresponding positioning hole 408 to achieve precise alignment between the furnace door panel 3 and the furnace body 1, realizing the automatic opening and closing of the furnace door panel 3.

Claims

1. A sealing and flow guiding device for a box-type furnace door to enhance convection, comprising: Furnace body (1), and furnace door panel (3) which can be opened and closed at the opening of the furnace body (1); The device is characterized in that it further includes: The wave-shaped guide fins (206) are set on the inner two side walls of the furnace body (1), and the sealing convection mechanism (2) is installed on the furnace door plate (3); The sealed convection mechanism (2) includes: The guide plate (204) has multiple guide holes (205) on its surface. When the furnace door plate (3) is closed, the guide plate (204) and the wave-shaped guide fins (206) define a guide channel. A trapezoidal sealing strip (202) is disposed between the furnace door plate (3) and the furnace body (1), and is sealed by pressure when the furnace door plate (3) is closed.

2. The enhanced convection box furnace door sealing and flow guiding device according to claim 1, characterized in that, The trapezoidal sealing strip (202) has a cross-section that is narrow at the top and wide at the bottom.

3. The enhanced convection box furnace door sealing and flow guiding device according to claim 1, characterized in that, The sealing convection mechanism (2) further includes an installation groove (201) and a sealing strip (203), wherein the trapezoidal sealing strip (202) is accommodated in the installation groove (201); when the furnace door panel (3) is closed, the sealing strip (203) is inserted into the installation groove (201) and comes into close contact with the trapezoidal sealing strip (202).

4. The enhanced convection box furnace door sealing and flow guiding device according to claim 1, characterized in that, The device also includes an automatic door opening mechanism (4) for driving the furnace door panel (3) to move.

5. The enhanced convection box furnace door sealing and flow guiding device according to claim 4, characterized in that, The automatic door opening mechanism (4) includes a motor (405), a gear (406) linked to the motor (405), a connecting rod (403) connected to the furnace door plate (3), and a tooth groove (407) provided on the connecting rod (403), wherein the gear (406) meshes with the tooth groove (407).

6. The enhanced convection box furnace door sealing and flow guiding device according to claim 4, characterized in that, The automatic door opening mechanism (4) also includes a tapered rod (409) on the furnace door plate (3) and a positioning hole (408) on the furnace body (1). The tapered rod (409) is inserted into the positioning hole (408) when the furnace door plate (3) is closed to achieve alignment.

7. A box-type furnace door sealing and flow guiding device for enhanced convection according to claim 5, characterized in that, The automatic door opening mechanism (4) also includes a limiting seat (401) for supporting and guiding the connecting rod (403), and a rolling shaft (402) is provided at the bottom of the limiting seat (401).

8. A box-type furnace door sealing and guiding device for enhanced convection according to claim 5, characterized in that, The automatic door opening mechanism (4) also includes a roller (404) installed on the outer wall of the furnace body (1), and the connecting rod (403) is slidably supported on the roller (404).

9. A box-type furnace door sealing and guiding device for enhanced convection according to claim 2, characterized in that, The trapezoidal sealing strip (202) is made of high-temperature resistant rubber.

Images