A pb oven sealing door with reduced heat loss

Abstract

The utility model discloses a kind of PB oven sealing doors reducing heat loss, it is related to PB oven sealing door technical field, including PB oven sealing door body, the side of PB oven sealing door body is equipped with first annular sealing groove, the inside of first annular sealing groove is slidably provided with annular plate, the side of annular plate is fixedly connected with annular rubber pad, the side of first annular sealing groove is equipped with annular cavity, the inner wall of annular cavity is slidably provided with piston plate, the one end of piston plate is fixedly connected with multiple connecting rods, multiple sealing holes are equipped between annular cavity and first annular sealing groove.The utility model sealing door is closed, annular rubber pad contacts cabinet and pushes annular plate to slide, air damping effect is formed by micropore, make door impact force reduce, avoid the abrasion caused by annular rubber pad violent collision;Spring in annular cavity can automatically compensate the abrasion amount of rubber pad, ensure that it is still closely adhered after long-term use.

Description

Technical Field

[0001] This utility model relates to the technical field of PB oven sealing doors, specifically to a PB oven sealing door that reduces heat loss. Background Technology

[0002] During the use of PB ovens, the heat insulation performance of the sealed door directly affects heating efficiency and energy consumption costs. The working temperature of PB ovens is usually between 150-300℃. If there are gaps or poor heat insulation in the sealed door, heat will continue to be lost.

[0003] The core defects of existing PB oven sealing doors are concentrated in two aspects: sealing structure and heat insulation design. The sealing relies on a single ring rubber gasket that fits against the door frame. During long-term opening and closing, the rigid collision between the rubber gasket and the cabinet will cause local wear. At the same time, the high temperature environment accelerates the aging and shrinkage of the rubber, causing the sealing gap to gradually widen. The heat loss rate increases with the use time. Although some improved door bodies have increased the number of sealing gaskets, they have not solved the problem of collision wear. Instead, the uneven stress of the multi-layer sealing structure has led to local sealing failure. Utility Model Content

[0004] In view of the problems existing in the sealing door of the PB oven mentioned above, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a PB oven sealing door that reduces heat loss, solving the problem that existing PB oven sealing doors suffer from reduced sealing performance and heat loss due to shrinkage and wear of the sealing gasket caused by significant collisions between the sealing gasket and the cabinet during prolonged use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A PB oven sealing door for reducing heat loss includes a PB oven sealing door body. A first annular sealing groove is formed on one side of the PB oven sealing door body. An annular plate is slidably disposed inside the first annular sealing groove. An annular rubber pad is fixedly connected to one side of the annular plate. An annular cavity is formed on one side of the first annular sealing groove. A piston plate is slidably disposed on the inner wall of the annular cavity. Multiple connecting rods are fixedly connected to one end of the piston plate. Multiple sealing holes are formed between the annular cavity and the first annular sealing groove. Each connecting rod is slidably and sealingly disposed inside a corresponding sealing hole and fixedly connected to one side of the annular plate. An installation hole is formed on one side of the sealing door, and a heat preservation mechanism is disposed inside the installation hole.

[0007] Preferably, the heat preservation mechanism includes two high-temperature resistant tempered glass panes and a heat preservation layer. The two high-temperature resistant tempered glass panes are fixedly connected to the inner wall of the sealing hole, and a vacuum cavity is provided between the two high-temperature resistant tempered glass panes. The heat preservation layer fills the interior of the vacuum cavity.

[0008] Preferably, each of the annular cavities is provided with a plurality of springs inside, and each spring is fixedly connected to one side of the annular plate.

[0009] Preferably, the outer surface and inner wall of the annular plate are provided with a second annular sealing groove, and the inner wall of the two second annular sealing grooves is fitted with an annular sealing ring.

[0010] Preferably, a plurality of micropores are formed around one side of the annular plate.

[0011] Preferably, the insulation layer is nano-silica aerogel.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. In this utility model, when the sealed door is closed, the annular rubber pad contacts the cabinet body and pushes the annular plate to slide. The micropores form an air damping effect, which reduces the impact force when closing the door and avoids wear caused by violent collision of the annular rubber pad. The spring in the annular cavity can automatically compensate for the wear of the rubber pad and ensure that it still fits tightly after long-term use.

[0013] 2. In this utility model, the heat preservation mechanism adopts a combination of "double-layer high-temperature resistant tempered glass + vacuum cavity + nano-silica aerogel". The vacuum cavity blocks the heat transfer of air convection, and the aerogel weakens the heat radiation, thereby reducing the thermal conductivity of the door. This not only ensures the stability of baking quality, but also reduces the energy loss from repeated heating. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present utility model Figure 1 A side sectional view; Figure 3 For the present utility model Figure 2 A three-dimensional view of the central ring plate; Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of part A.

[0016] Explanation of reference numerals in the attached figures: 1. PB oven sealing door body; 2. Annular plate; 3. Annular rubber gasket; 4. Piston plate; 5. Connecting rod; 6. High temperature resistant tempered glass; 7. Insulation layer; 8. Spring; 9. Annular sealing ring. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model discloses a PB oven sealing door that reduces heat loss.

[0019] This utility model provides, for example Figure 1-4 The illustrated PB oven sealing door for reducing heat loss includes a PB oven sealing door body 1. A first annular sealing groove is provided on one side of the PB oven sealing door body 1. An annular plate 2 is slidably disposed inside the first annular sealing groove. An annular rubber pad 3 is fixedly connected to one side of the annular plate 2. An annular cavity is provided on one side of the first annular sealing groove. A piston plate 4 is slidably disposed on the inner wall of the annular cavity. Multiple connecting rods 5 are fixedly connected to one end of the piston plate 4. Multiple sealing holes are provided between the annular cavity and the first annular sealing groove. Each connecting rod 5 is slidably disposed inside the corresponding sealing hole and is fixedly connected to one side of the annular plate 2. An installation hole is provided on one side of the sealing door. A heat preservation mechanism is provided inside the installation hole. Multiple micropores are provided around one side of the annular plate 2.

[0020] When the sealed door is closed, the annular rubber pad 3 contacts the oven cabinet and pushes the annular plate to slide inward. At this time, the air in the first annular sealing groove needs to flow slowly from the right to the left through the micropores to form an air damping effect. This avoids the annular rubber pad from violently colliding with the cabinet due to excessive closing force, reduces the instantaneous wear of the rubber pad, and ensures a smooth contact process to prevent sealing deformation caused by local stress concentration.

[0021] To improve the heat retention of the PB oven's sealing door body 1, such as Figure 1-2 As shown, the insulation mechanism includes two high-temperature resistant tempered glass panes 6 and an insulation layer 7. The two high-temperature resistant tempered glass panes 6 are fixedly connected to the inner wall of the sealing hole. A vacuum cavity is provided between the two high-temperature resistant tempered glass panes 6. The insulation layer 7 is filled inside the vacuum cavity. The insulation layer 7 is nano-silica aerogel.

[0022] A vacuum cavity is formed between the two layers of high-temperature resistant tempered glass to block air convection heat transfer; the nano-silica aerogel filled in the vacuum cavity has an extremely low thermal conductivity, which can significantly reduce heat radiation transfer. This combination design of "vacuum + high-efficiency heat insulation material" reduces the heat loss of the door itself.

[0023] To improve the sealing performance of the annular plate 2, such as Figure 2-4 As shown, the outer surface and inner wall of the annular plate 2 are provided with second annular sealing grooves, and the inner walls of the two second annular sealing grooves are fitted with annular sealing rings 9.

[0024] The sealing performance of the annular plate 2 can be improved by using two annular sealing rings 9, thereby preventing air from entering from the side of the annular plate 2.

[0025] To compensate for the annular rubber pad, such as Figure 2 As shown, each annular cavity is equipped with multiple springs 8, and each spring 8 is fixedly connected to one side of the annular plate 2.

[0026] When the annular rubber pad 3 experiences slight wear due to long-term use, the spring 8 inside the annular cavity releases its elastic potential energy, pushing the annular plate to move outward to compensate for the wear.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A PB oven sealing door for reducing heat loss, comprising a PB oven sealing door body (1), characterized in that, The PB oven sealing door body (1) has a first annular sealing groove on one side. An annular plate (2) is slidably arranged inside the first annular sealing groove. An annular rubber pad (3) is fixedly connected to one side of the annular plate (2). An annular cavity is opened on one side of the first annular sealing groove. A piston plate (4) is slidably arranged on the inner wall of the annular cavity. A plurality of connecting rods (5) are fixedly connected to one end of the piston plate (4). A plurality of sealing holes are opened between the annular cavity and the first annular sealing groove. Each connecting rod (5) is slidably sealed inside the corresponding sealing hole and is fixedly connected to one side of the annular plate (2). An installation hole is opened on one side of the sealing door. A heat preservation mechanism is arranged inside the installation hole.

2. The PB oven sealing door for reducing heat loss according to claim 1, characterized in that, The heat preservation mechanism includes two high-temperature resistant tempered glass (6) and a heat preservation layer (7). The two high-temperature resistant tempered glass (6) are fixedly connected to the inner wall of the sealing hole. A vacuum cavity is provided between the two high-temperature resistant tempered glass (6), and the heat preservation layer (7) is filled inside the vacuum cavity.

3. The PB oven sealing door for reducing heat loss according to claim 1, characterized in that, Each of the annular cavities is provided with a plurality of springs (8), and each spring (8) is fixedly connected to one side of the annular plate (2).

4. The PB oven sealing door for reducing heat loss according to claim 1, characterized in that, The outer surface and inner wall of the annular plate (2) are provided with a second annular sealing groove, and the inner wall of the two second annular sealing grooves is fitted with an annular sealing ring (9).

5. The PB oven sealing door for reducing heat loss according to claim 1, characterized in that, The annular plate (2) has multiple micropores circumferentially formed on one side.

6. The PB oven sealing door for reducing heat loss according to claim 2, characterized in that, The insulation layer (7) is nano-silica aerogel.

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