Access door structure for heat preservation of oven

Abstract

The utility model discloses an access door structure for heat preservation of an oven, and relates to the technical field of ovens. A door opening is formed in the front side wall of the oven; a pushing mechanism is arranged on the front side wall of the oven, the pushing mechanism is in transmission connection with a door body matched with the door opening, and the pushing mechanism is used for pushing the door body into the door opening; a protective shell is arranged on the front side wall of the oven, the pushing mechanism comprises a driving mechanism arranged on the protective shell, a frame body arranged in the protective shell in a sliding mode and a guide mechanism arranged in the protective shell, the frame body is in transmission connection with the driving mechanism, the door body is hinged to the frame body through a connecting mechanism, and the door body is in sliding connection with the guide mechanism. The pushing mechanism is installed on the oven and is in transmission connection with the door body, the door body can be pushed into the door opening by operating the pushing mechanism so as to block the door opening, operation is convenient, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of oven technology, and more specifically, to an inspection door structure for oven heat preservation. Background Technology

[0002] Ovens operate at extremely high internal temperatures, requiring periodic inspection and maintenance of the oven's cooling tunnel walls and heating elements. This necessitates the installation of an inspection door and a heat preservation door. When the oven is operating, the heat preservation door seals the inspection door to minimize heat loss. For maintenance, the door is opened, and personnel can enter the oven to perform the necessary checks once the internal temperature has cooled to a suitable level.

[0003] However, because ovens require high heat retention, their insulated doors are generally made of steel, with insulation material installed inside. If a steel insulated door is large, it becomes quite heavy, making it time-consuming and laborious to open and close manually.

[0004] Therefore, a maintenance door structure for oven insulation is proposed. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a maintenance door structure for oven insulation.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] An inspection door structure for oven insulation is disclosed, wherein a door opening is provided on the front side wall of the oven; a pushing mechanism is provided on the front side wall of the oven, and the pushing mechanism is drivenly connected to a door body adapted to the door opening, the pushing mechanism being used to push the door body into the door opening; a protective shell is provided on the front side wall of the oven, the pushing mechanism including a drive mechanism provided on the protective shell, a frame body slidably provided within the protective shell, and a guide mechanism provided within the protective shell, the frame body being drivenly connected to the drive mechanism, the door body being hinged to the frame body via a connecting mechanism, and the door body being slidably connected to the guide mechanism.

[0008] Furthermore, in this utility model, the connecting mechanism includes a left connecting rod and a right connecting rod arranged in parallel and spaced apart. When the door body is located inside the protective shell, the left connecting rod is away from the door opening, and the right connecting rod is close to the door opening. One end of the left connecting rod and one end of the right connecting rod are both hinged to the frame, and the other end of the left connecting rod and the other end of the right connecting rod are both hinged to the door body.

[0009] Furthermore, in this utility model, the guiding mechanism includes a guide plate disposed within the protective shell, an L-shaped groove formed on the guide plate, the L-shaped groove including a first groove and a second groove that are interconnected and perpendicular to each other, the second groove being disposed near the door opening; the extending direction of the first groove and the sliding direction of the frame are both parallel to the front side wall of the oven; a roller adapted to the L-shaped groove is rotatably disposed on the door near the left connecting rod, the roller being slidably connected to the L-shaped groove; the lengths of the left connecting rod and the right connecting rod are both greater than the distance between the frame and the first groove.

[0010] Furthermore, in this utility model, the drive mechanism includes a rotating shaft rotatably disposed within the protective shell, a drive gear disposed on the rotating shaft, and a rack disposed on the frame. The rack and the drive gear mesh with each other, and the extending direction of the rack is the same as the sliding direction of the frame.

[0011] Furthermore, in this utility model, a limiting mechanism is also provided inside the protective shell. The limiting mechanism includes an electric push rod disposed inside the protective shell and a limiting ring disposed on the rotating shaft. The limiting ring is provided with a plurality of limiting countersunk holes in a circumferential array. The push rod of the electric push rod can extend into any of the limiting countersunk holes.

[0012] The beneficial effects of this utility model are:

[0013] This utility model provides a maintenance door structure for oven insulation. By installing a pushing mechanism on the oven, which is connected to the door body, the door body can be pushed into the doorway to block the doorway by operating the pushing mechanism. The operation is convenient, time-saving and labor-saving. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the door of this utility model not being located inside the doorway;

[0016] Figure 3 This is a schematic diagram of the structure of the door body of this utility model located inside the doorway;

[0017] Figure 4 for Figure 2 Sectional view of section AA;

[0018] Figure 5 for Figure 3 Sectional view of section BB;

[0019] Figure 6 for Figure 4 A magnified view of a section at point C;

[0020] Figure 7 This is a schematic diagram of the installation structure of the sealing strip according to an embodiment of the present invention.

[0021] In the diagram: 101-Oven; 201-Door opening; 301-Door body; 401-Shell; 501-Frame; 502-Left connecting rod; 503-Right connecting rod; 504-Guide plate; 5041-First slide groove; 5042-Second slide groove; 505-Roller; 506-Shaft; 507-Drive gear; 508-Rack; 601-Electric push rod; 602-Limit ring; 701-Sealing strip. Detailed Implementation

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

[0023] Please see Figure 1-7 This utility model provides a technical solution:

[0024] A maintenance door structure for oven insulation includes a door opening 201 on the front wall of oven 101 for easy inspection and maintenance of the oven's cooling tunnel walls and heating elements. A pushing mechanism is installed on the front wall of oven 101, and this mechanism is connected to a door body 301 that fits the door opening 201. Figure 2 From the perspective of the oven, the pushing mechanism can push the door 301 to the right to push the door 301 into the doorway 201. In order to protect the pushing mechanism and the installation of the pushing mechanism, a protective shell 401 is also installed on the front side wall of the oven 101.

[0025] Specifically, the pushing mechanism includes a drive mechanism mounted on the housing 401, a frame 501 slidably disposed within the housing 401, and a guide plate 504 mounted within the housing 401. The frame 501 is drive-connected to the drive mechanism, and the door 301 is hinged to the frame 501 via a connecting mechanism. The door 301 is slidably connected to the guide plate 504. The drive mechanism is used to drive the frame 501 to move within the housing 401, thereby driving the door 301 to move towards the door opening 201 via the connecting mechanism.

[0026] Specifically, in this embodiment, the connecting mechanism includes a left connecting rod 502 and a right connecting rod 503 that are parallel and spaced apart, and the left connecting rod 502 and the right connecting rod 503 have the same length. (Refer to...) Figure 2 and Figure 4When the door 301 is inside the protective shell 401, the left connecting rod 502 is away from the door opening 201, and the right connecting rod 503 is close to the door opening 201; one end of the left connecting rod 502 and one end of the right connecting rod 503 are hinged to the frame 501, and the other end of the left connecting rod 502 and the other end of the right connecting rod 503 are hinged to the door 301. Figure 2 and Figure 3 From the perspective of the frame, both the left connecting rod 502 and the right connecting rod 503 are installed at the top of the frame 501. To further increase the stability of this structure, two lower connecting rods are also installed at intervals at the bottom of the frame 501. One end of any lower connecting rod is hinged to the frame 501, and the other end is hinged to the door 301. The length of the lower connecting rod is the same as the length of the left connecting rod 502 / right connecting rod 503.

[0027] Reference Figure 4 and Figure 5 When the door 301 moves to the doorway 201, a first groove 5041 and a second groove 5042 are provided on the guide plate 504 to facilitate the entry of the door 301 into the doorway 201. The first groove 5041 and the second groove 5042 form an L-shaped structure, which are interconnected and perpendicular to each other. The second groove 5042 is located close to the doorway 201. The extension direction of the first groove 5041 and the sliding direction of the frame 501 are both parallel to the front side wall of the oven 101. A roller 505 adapted to the L-shaped groove is rotatably installed on the door 301 near the left connecting rod 502. The roller 505 is slidably connected to the L-shaped groove. The lengths of the left connecting rod 502 and the right connecting rod 503 are both greater than the distance between the frame 501 and the first groove 5041.

[0028] Specifically, in this embodiment, the drive mechanism includes a rotating shaft 506 rotatably mounted inside the housing 401, a drive gear 507 mounted on the rotating shaft 506, and a rack 508 mounted on the frame 501. The rack 508 and the drive gear 507 mesh with each other, and the extending direction of the rack 508 is the same as the moving direction of the frame 501. Figure 2 or Figure 3 From the perspective of the rotating shaft 506, when the rotating shaft 506 is rotated, the driving gear 507 rotates synchronously, and the rack 508 can move back and forth to control the left and right movement of the door 301.

[0029] Reference Figures 2-6 When the door 301 is located inside the housing 401 or the door opening 201, a limiting mechanism is installed inside the housing 401 to prevent the pivot 506 from rotating and causing the door 301 to move. Specifically, the limiting mechanism includes an electric push rod 601 installed inside the housing 401 and a limiting ring 602 installed on the pivot 506. The limiting ring 602 has a plurality of limiting countersunk holes arranged in a circumferential array, and the push rod of the electric push rod 601 can extend into any of the limiting countersunk holes.

[0030] Reference Figure 7 To facilitate the installation of the sealing strip 701 on the side of the door 301, the side wall of the door opening 201 is designed as a stepped structure in this embodiment. Correspondingly, the side of the door 301 is also designed as a stepped structure. The sealing strip 701 can be installed on the stepped steps on the side of the door 301. When the door 301 is pushed into the door opening 201, the sealing strip 701 installed on the door 301 will be compressed to a certain extent, thereby further strengthening the seal between the door 301 and the door opening 201. The sealing strip 701 can be made of silicone foam strip.

[0031] Working principle:

[0032] Reference Figure 2 and Figure 4 When the door 301 is inside the protective shell 401, both the left connecting rod 502 and the right connecting rod 503 are tilted and not perpendicular to the front wall of the oven 101. When it is necessary to block the doorway 201, the electric push rod 601 is retracted and does not extend into the limiting countersunk hole, allowing the rotating shaft 506 to rotate freely. Rotating the rotating shaft 506 moves the frame 501 to the right, and the door 301 moves synchronously to the right under the drive of the connecting mechanism. When the roller 505 moves to the rightmost end of the first slide groove 5041, the door 301 is directly in front of the doorway 201, and then the frame 501 continues to move to the right under the control of the drive mechanism. At this time, the roller 505 rolls into the second slide groove 5042, which acts as a guide. Figure 4 or Figure 5 From the perspective of [the viewpoint], after the roller 505 moves into the second slide groove 5042, it moves upwards. During this process, the door body 301 moves towards the door opening 201. (Refer to...) Figure 5 When the door 301 completely blocks the doorway 201, the rotating shaft 506 stops rotating. At this time, the frame 501 also stops moving. Then, the electric push rod 601 extends and the push rod of the electric push rod 601 extends into the corresponding limiting countersunk hole. The rotating shaft 506 cannot rotate at this time, so the door 301 is stably fixed in the doorway 201.

[0033] When it is necessary to open the doorway 201, the electric push rod 601 can be separated from the limit countersunk hole and the rotating shaft 506 can be rotated in the opposite direction.

[0034] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A service door structure for oven insulation, a door opening (201) is formed on the front side wall of an oven (101); characterized in that: The front side wall of the oven (101) is provided with a pushing mechanism, the pushing mechanism is drivingly connected with a door body (301) matched with the door opening (201), and the pushing mechanism is used for pushing the door body (301) into the door opening (201); the front side wall of the oven (101) is provided with a protective shell (401), the pushing mechanism comprises a driving mechanism arranged on the protective shell (401), a frame body (501) slidingly arranged in the protective shell (401) and a guide mechanism arranged in the protective shell (401), the frame body (501) is drivingly connected with the driving mechanism, the door body (301) is hinged with the frame body (501) through a connecting mechanism, and the door body (301) is slidingly connected with the guide mechanism.

2. An access door structure for oven insulation according to claim 1, characterized in that: The connecting mechanism comprises left connecting rods (502) and right connecting rods (503) arranged in parallel and at intervals, when the door body (301) is located in the protective shell (401), the left connecting rods (502) are away from the door opening (201), and the right connecting rods (503) are close to the door opening (201); one end of the left connecting rod (502) and one end of the right connecting rod (503) are hinged with the frame body (501), and the other end of the left connecting rod (502) and the other end of the right connecting rod (503) are hinged with the door body (301).

3. An access door structure for oven insulation according to claim 2, characterized in that: The guide mechanism comprises a guide plate (504) arranged in the protective shell (401), the guide plate (504) is provided with an L-shaped sliding groove, the L-shaped sliding groove comprises a first sliding groove (5041) and a second sliding groove (5042) which are communicated with each other and perpendicular to each other, and the second sliding groove (5042) is arranged close to the door opening (201); the extension direction of the first sliding groove (5041) and the sliding direction of the frame body (501) are parallel to the front side wall of the oven (101); the door body (301) is rotatably provided with a roller (505) matched with the L-shaped sliding groove close to the left connecting rod (502), the roller (505) is slidingly connected with the L-shaped sliding groove; the length of the left connecting rod (502) and the length of the right connecting rod (503) are greater than the distance between the frame body (501) and the first sliding groove (5041).

4. An access door structure for oven insulation according to claim 3, characterized in that: The driving mechanism comprises a rotating shaft (506) rotatably arranged in the protective shell (401), a driving gear (507) arranged on the rotating shaft (506) and a rack (508) arranged on the frame body (501), the rack (508) and the driving gear (507) are meshed with each other, and the extension direction of the rack (508) is the same as the sliding direction of the frame body (501).

5. An access door structure for oven insulation according to claim 4, characterized in that: The protective shell (401) is further provided with a limiting mechanism, the limiting mechanism comprises an electric push rod (601) arranged in the protective shell (401) and a limiting ring (602) arranged on the rotating shaft (506), a plurality of limiting counterbores are arranged in the circumferential direction of the limiting ring (602), and the push rod of the electric push rod (601) can extend into any limiting counterbores.

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