Furnace door of annealing furnace

Abstract

The utility model relates to the technical field of annealing furnaces, and provides an annealing furnace door which comprises a base frame, a door body arranged on the base frame in a lifting mode, a lifting mechanism used for driving the door body to ascend and descend and a limiting stopper arranged on the base frame, a triggering piece used for triggering the limiting stopper is arranged on the door body, and the triggering piece is in an arc shape. The mounting frame is arranged at a furnace opening of the annealing furnace, an inner groove is formed in the mounting frame, a frame body which is matched with the inner groove and can move far away from or close to the door body is arranged in the inner groove, a heat insulation frame is arranged on the frame body, and a heat insulation plate is arranged on the side, facing the furnace opening, of the door body; the frame body moves close to the door body to enable the heat insulation frame to be tightly attached to the heat insulation plate on the door body, so that a gap between the door body and the furnace mouth is eliminated, and heat is prevented from being lost from the gap. Heat transferred to the door body is greatly reduced through the heat insulation plate, and high-temperature deformation of the door body is avoided; when the trigger piece triggers the limiting stopper, the limiting stopper is stressed smoothly and is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of annealing furnaces, in particular to an annealing furnace door. Background Art

[0002] In the shipbuilding process, annealing furnaces are key equipment used to heat treat ship castings. Through annealing treatment, the residual stress generated by parts during casting, forging or welding can be eliminated, the material structure and performance can be improved, and the overall quality and service life of the ship can be improved.

[0003] In the prior art, the annealing furnace door and the furnace mouth are not tightly fitted, resulting in heat loss through the gap during the annealing process, which not only wastes energy but also affects the annealing effect. The heat transferred to the furnace door will cause the furnace door temperature to be too high, thereby causing the furnace door to deform. In addition, a limiter is usually installed on the annealing furnace door so that the furnace door can accurately and stably reach the predetermined position during the opening / closing process. However, when the current furnace door is opened / closed, it is in direct vertical contact with the limiter sensing part, which concentrates stress and easily causes damage to the limiter.

[0004] Therefore, the utility model proposes an annealing furnace door to solve the above problems. Utility Model Content

[0005] The embodiment of the utility model aims to provide an annealing furnace door to solve the above-mentioned problem.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An annealing furnace door comprises a base frame, a door body which can be lifted and lowered on the base frame, a lifting mechanism for driving the door body to lift and lower to open / close the annealing furnace port, and a stopper arranged on the base frame, wherein a triggering member for triggering the stopper is arranged on the door body, and the triggering member is in an arc shape;

[0008] It also includes an installation frame arranged at the furnace mouth of the annealing furnace, the installation frame is arranged to surround the furnace mouth and is located between the door body and the furnace mouth when the door body is closed, the installation frame is provided with an inner groove, the inner groove is provided with a frame body that is adapted and can move away from / close to the door body, the frame body is provided with a heat insulation frame, and the door body is provided with a heat insulation board on the side facing the furnace mouth.

[0009] In an optional solution: at least one telescopic member is provided on the mounting frame, the telescopic end of the telescopic member is in the inner groove and is provided with a driving wedge block, the frame body is provided with a driven wedge block adapted to the driving wedge block, the inclined side of the driving wedge block is in contact with the inclined side of the driven wedge block, and a plurality of elastic reset members are provided between the frame body and the bottom of the inner groove.

[0010] In an optional solution: the elastic return member is a tension spring.

[0011] In an optional solution: the door body is provided with a heat dissipation plate facing outward, and the door body is provided with a plurality of heat-conducting columns which are embedded and connected to the heat dissipation plate at the outward ends.

[0012] In an optional solution: a fan is provided on the door body, a connected air outlet pipe is provided at the air outlet end of the fan, one end of the air outlet pipe away from the fan is closed, and a plurality of air outlet holes for discharging air toward the heat sink are provided on the air outlet pipe.

[0013] Compared with the prior art, the beneficial effects of the embodiments of the present invention are as follows:

[0014] 1. After the ship castings to be annealed are moved into the annealing furnace, the door is driven down by the lifting mechanism to close the furnace mouth, and then the frame moves close to the door body so that the insulation frame and the insulation board on the door body fit closely, thereby eliminating the gap between the door body and the furnace mouth, avoiding heat loss from the gap, reducing energy consumption and ensuring the annealing effect of the castings;

[0015] 2. The heat insulation board can greatly reduce the heat transfer to the door body to avoid high temperature deformation of the door body;

[0016] 3. When the door is raised or lowered, the trigger is in an arc shape, so when the trigger triggers the limiter, the force on the limiter is smooth, which makes it less likely to damage the limiter, prolonging the service life of the limiter and increasing the reliability of the limiter.

[0017] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings herein are incorporated into and constitute a part of the specification to illustrate embodiments consistent with the present application and are used together with the specification to explain the principles of the present application. At the same time, these drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application for those skilled in the art by referring to specific embodiments.

[0019] Figure 1 It is a front view of the utility model.

[0020] Figure 2 It is a rear view of the door body in the utility model.

[0021] Figure 3 It is a three-dimensional schematic diagram of the installation frame in the utility model.

[0022] Figure 4 It is a schematic diagram of the arrangement between the frame body and the heat insulation frame in the utility model.

[0023] Notes on figure numbers: 1-base frame, 2-door body, 3-trigger, 4-limiter, 5-lifting mechanism, 6-heat sink, 7-heat conducting column, 8-air outlet duct, 9-fan, 10-installation frame, 11-telescopic member, 12-insulation board, 13-inner groove, 14-driving wedge block, 15-frame, 16-insulation frame, 17-driven wedge block, 18-elastic reset member. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] See also Figure 1 to Figure 4 , an annealing furnace door, comprising a base frame 1, a door body 2 which can be lifted and lowered on the base frame 1, a lifting mechanism 5 for driving the door body 2 to lift and lower to realize the opening / closing of the annealing furnace port, and a stopper 4 arranged on the base frame 1, wherein the door body 2 is provided with a triggering member 3 for triggering the stopper 4, and the triggering member 3 is in an arc shape;

[0027] The annealing furnace further comprises an installation frame 10 disposed at the furnace opening, wherein the installation frame 10 is disposed to surround the furnace opening and is located between the door body 2 and the furnace opening when the door body 2 is closed, wherein the installation frame 10 is provided with an inner groove 13, wherein the inner groove 13 is provided with a frame body 15 adapted to be movable toward / away from the door body 2, wherein the frame body 15 is provided with an insulation frame 16, and an insulation board 12 is provided on the side of the door body 2 facing the furnace opening.

[0028] It should be noted that the lifting mechanism 5 includes a driving motor, a reducer, a transmission mechanism (including chain drive, rope pulling drive, belt drive, screw drive, etc.) and a guide mechanism, etc., which are used to drive the door body 2 to lift and lower, and are widely used in industrial production and other fields. The limiter 4 is used to detect whether the door body 2 has reached a predetermined upper or lower limit position to prevent the door body 2 from being excessively lifted and lowered, causing equipment damage or safety accidents. The above are all existing mature technologies, so they will not be elaborated here.

[0029] After the ship casting to be annealed is moved into the annealing furnace, the door body 2 is driven down to close the furnace mouth by the lifting mechanism 5, and then the frame 15 moves close to the door body 2 so that the insulation frame 16 is tightly fitted with the insulation board 12 on the door body 2, thereby eliminating the gap between the door body 2 and the furnace mouth and avoiding heat loss from the gap, thereby reducing energy consumption and ensuring the annealing effect of the casting. The heat transfer to the door body 2 is greatly reduced through the insulation board 12 to avoid high-temperature deformation of the door body 2. In addition, when the door body 2 is lifted or lowered, since the trigger member 3 is in an arc shape, when the trigger member 3 triggers the limiter 4, the force on the limiter 4 is smooth, thereby preventing the limiter 4 from being damaged, thereby extending the service life of the limiter 4 and increasing the limit reliability.

[0030] Furthermore, the insulation board 12 and the insulation frame 16 are both made of rock wool.

[0031] See also Figure 1 In one embodiment of the utility model, at least one telescopic member 11 is provided on the mounting frame 10 (the telescopic member 11 can be a hydraulic cylinder, a pneumatic cylinder, an electric telescopic rod, etc., which belongs to the existing mature technology and is not described here), the telescopic end of the telescopic member 11 is in the inner groove 13 and is provided with a driving wedge block 14, and the frame body 15 is provided with a driven wedge block 17 adapted to the driving wedge block 14, the inclined side of the driving wedge block 14 is in contact with the inclined side of the driven wedge block 17, and a plurality of elastic reset members 18 are provided between the frame body 15 and the bottom of the inner groove 13.

[0032] In this embodiment, with the inclined side of the driving wedge block 14 and the inclined side of the driven wedge block 17 fitting against each other and under the action of a number of elastic reset members 18, the telescopic member 11 is extended and retracted to make the frame 15 move away from / closer to the door body 2, thereby achieving close contact and separation between the insulation frame 16 and the insulation board 12.

[0033] Furthermore, in this embodiment, the elastic reset member 18 is a tension spring.

[0034] See also Figure 1 In one embodiment of the utility model, the door body 2 is provided with a heat dissipation plate 6 facing outward, and the door body 2 is provided with a plurality of heat-conducting columns 7 which are embedded and connected to the heat dissipation plate 6 at the outward end;

[0035] The door body 2 is provided with a fan 9, and the air outlet end of the fan 9 is provided with a connected air outlet pipe 8. The end of the air outlet pipe 8 away from the fan 9 is closed, and the air outlet pipe 8 is provided with a plurality of air outlet holes (not shown in the figure) for discharging air toward the heat sink 6.

[0036] In this embodiment, although a heat insulation plate 12 is provided for heat insulation, a part of the heat will still be conducted to the door body 2. The heat on the door body 2 is sent to the heat sink 6 through the heat conducting column 7 for dissipation, thereby avoiding heat accumulation and keeping the door body 2 in a relatively low safety temperature range at all times. An airflow is generated by the fan 9 and blown toward the heat sink 6, and the heat emitted by the heat sink 6 is carried by the flowing airflow, thereby ensuring the heat dissipation effect of the heat sink 6.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An annealing furnace door, comprising a base frame (1), a door body (2) which can be lifted and lowered on the base frame (1), a lifting mechanism (5) for driving the door body (2) to lift and lower to open / close the annealing furnace opening, and a stopper (4) arranged on the base frame (1), wherein the door body (2) is provided with a triggering member (3) for triggering the stopper (4), characterized in that: The trigger member (3) is in an arc shape; The invention also comprises a mounting frame (10) arranged at the furnace opening of the annealing furnace, wherein the mounting frame (10) is arranged to surround the furnace opening and is located between the door body (2) and the furnace opening when the door body (2) is closed, wherein the mounting frame (10) is provided with an inner groove (13), wherein a frame body (15) adapted to be movable toward / away from the door body (2) is provided in the inner groove (13), wherein a heat insulation frame (16) is provided on the frame body (15), and a heat insulation board (12) is provided on the side of the door body (2) facing the furnace opening.

2. The annealing furnace door according to claim 1, characterized in that: The mounting frame (10) is provided with at least one telescopic member (11), the telescopic end of the telescopic member (11) is located in an inner groove (13) and is provided with a driving wedge block (14), the frame body (15) is provided with a driven wedge block (17) adapted to the driving wedge block (14), the inclined side of the driving wedge block (14) is fitted and abutted against the inclined side of the driven wedge block (17), and a plurality of elastic reset members (18) are provided between the frame body (15) and the bottom of the inner groove (13).

3. The annealing furnace door according to claim 2, characterized in that: The elastic reset element (18) is a tension spring.

4. The annealing furnace door according to claim 1, characterized in that: The door body (2) is provided with a heat dissipation plate (6) facing outward, and the door body (2) is provided with a plurality of heat-conducting columns (7) which are embedded and connected to the heat dissipation plate (6) at their outward ends.

5. The annealing furnace door according to claim 4, characterized in that: The door body (2) is provided with a fan (9), the air outlet end of the fan (9) is provided with a connected air outlet pipe (8), one end of the air outlet pipe (8) away from the fan (9) is closed, and the air outlet pipe (8) is provided with a plurality of air outlet holes for discharging air toward the heat dissipation plate (6).

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