Furnace door sealing structure of trolley furnace

Abstract

The furnace door sealing structure comprises a furnace body, a lifting frame and a lifting furnace door assembly, the lifting furnace door assembly comprises a lifting frame, a furnace door, a movable frame, a driving cylinder and a linkage arm, the top of the lifting frame is in transmission connection with a driving motor through a chain wheel assembly, and the two sides of the lifting frame are in sliding connection with the two sides of the lifting frame through idler wheels. A furnace door is slidably arranged on the inner wall of the lifting frame through a sliding rail, a movable frame is arranged at the front end of the furnace door, two sides of the movable frame are connected with two sides of the furnace door through linkage arms, one end of each linkage arm is rotatably connected with the side wall of the movable frame through a first pin shaft, and the other end of each linkage arm is hinged to the side wall of the lifting frame through a second pin shaft. A movable hole is formed in the connecting arm and located below the second pin shaft, a sliding shaft penetrates through the movable hole, and one end of the sliding shaft is connected with the furnace door. The driving cylinder pushes the movable frame to displace and pushes the furnace door to displace under the driving of the linkage arm, so that the furnace door and the furnace opening of the furnace body are attached and sealed, gaps are effectively avoided, and the sealing performance of the furnace door is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to trolley furnace technical field, especially a furnace door sealing structure of trolley furnace. BACKGROUND

[0002] Because trolley resistance furnace needs to keep the higher temperature in the furnace, so the requirement to sealing is higher, and the furnace door and the furnace body often need to open, and it is the main part of energy loss. The plane size of trolley furnace door is larger, and the sealing of furnace door and furnace mouth is more difficult to handle. If the contact between furnace door and furnace mouth is tighter, the friction between furnace door and furnace mouth will occur when the furnace door is opened and closed, and the sealing effect will be weakened after long-term use. If the contact between furnace door and furnace mouth is looser, the sealing effect is poor, which leads to heat loss. Chinese patent document CN202020632482.3 discloses a furnace door device of box type quenching furnace. In the application, the furnace door is tightly sealed with the furnace body by using self-weight and inclined track. However, it is found that the furnace door with large self-weight will gradually sink due to gravity after long-term use, which leads to large gap between the sealing end of furnace door and furnace mouth, thereby affecting the sealing effect. SUMMARY

[0003] The utility model discloses a furnace door sealing structure of trolley furnace, adopts drive arrangement to push the furnace door and the furnace body and seals, solves the problem that the sealing structure of furnace door in the prior art is relatively poor.

[0004] The specific technical scheme is as follows:

[0005] A furnace door sealing structure of trolley furnace, comprising a furnace body, a lifting frame, and a lifting furnace door assembly, the lifting furnace door assembly is arranged at one end of the furnace mouth of the furnace body through the lifting frame, the lifting furnace door assembly comprises a lifting frame, a furnace door, a movable frame, a drive cylinder, and a connecting arm, the top of the lifting frame is in transmission connection with a drive motor arranged on the lifting frame through a chain wheel assembly, the two sides of the lifting frame body are in sliding connection with the tracks on the two sides of the lifting frame through rollers, the furnace door is arranged on the inner wall of the lifting frame through a horizontally arranged sliding rail, the movable frame is arranged at the front end of the furnace door, the two sides of the movable frame are connected with the two sides of the furnace door through at least two connecting arms respectively, one end of the connecting arm is rotatably connected with the side wall of the movable frame through a pin shaft one, the other end of the connecting arm is rotatably connected with the side wall of the lifting frame through a pin shaft two, and a longitudinal movable hole is arranged below the pin shaft two, a sliding shaft is horizontally arranged in the movable hole, and one end of the sliding shaft is fixedly connected with the side wall of the furnace door.

[0006] Further, the linkage arm is in Z-shaped structure, one end of the linkage arm extends upward and is connected with the pin shaft one, and the other end of the linkage arm extends downward and is provided with the movable hole.

[0007] Further, the movable hole is in waist-shaped hole structure, and the width of the movable hole is adapted to the diameter of the sliding shaft.

[0008] Further, one end surface of the furnace door is provided with a sealing end adapted to the size of the furnace opening, and the periphery of the sealing end is provided with an inclined surface.

[0009] Further, the furnace body is provided with a trolley, and the rear end top edge of the trolley is provided with an inclined surface and is tightly matched with the sealing end of the furnace door to realize sealing.

[0010] Further, the width of the movable frame is adapted to the width size of the furnace door.

[0011] The beneficial effects of the utility model are embodied in that:

[0012] In the utility model, the lifting furnace door assembly drives the movable frame to displace through the driving cylinder, and drives the furnace door to translate under the driving of the linkage arm, so that the furnace door can be tightly matched to realize sealing, and the sealing is more reliable, compared with the prior art, the generation of gaps can be effectively avoided, and the sealing effect of the furnace door is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model.

[0014] Figure 2 It is a front view of the lifting furnace door assembly of the utility model.

[0015] Figure 3 It is a structural schematic view when the furnace door is matched and sealed with the furnace body in the utility model.

[0016] Figure 4 It is Figure 1 It is an enlarged schematic view of A in the utility model.

[0017] Mark for explaining: furnace body 1, trolley 2, lifting frame 3, chain wheel assembly 31, driving motor 32, lifting frame 4, roller 41, sliding rail 42, furnace door 5, sealing end 51, movable frame 6, driving cylinder 7, linkage arm 8, pin shaft one 81, pin shaft two 82, movable hole 83, sliding shaft 84. CONCRETE IMPLEMENTATION

[0018] In order to make the technical scheme of the utility model more clear and explicit, the utility model will be further described below in combination with the drawings, and any scheme derived by equivalent replacement and conventional reasoning of the technical features of the technical scheme of the utility model falls within the protection scope of the utility model.

[0019] In the description of the utility model creation, it needs to be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model creation and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] Please refer to the accompanying drawings Figures 1-4 The embodiment provides a furnace door sealing structure of a trolley furnace, which comprises a furnace body 1, a lifting frame 3, a lifting furnace door assembly, the lifting furnace door assembly is arranged at one end of a furnace opening of the furnace body 1 through the lifting frame 3, the lifting furnace door assembly comprises a lifting frame 4, a furnace door 5, a movable frame 6, a drive cylinder 7 and a connecting arm 8, the top of the lifting frame 4 is in transmission connection with a drive motor 32 arranged on the lifting frame 3 through a chain wheel assembly 31, and the two sides of the lifting frame 4 are in sliding connection with the tracks on the two sides of the lifting frame 3 through rollers 41, so that the drive motor 32 drives the lifting frame 4 to lift through the chain wheel assembly 31. The furnace door 5 is slidably arranged on the inner wall of the lifting frame 4 through horizontally arranged sliding rails 42, the movable frame 6 is arranged at the front end of the furnace door 5, the width of the movable frame 6 is adapted to the width dimension of the furnace door 5, the two sides of the movable frame 6 are connected with the two sides of the furnace door 5 through two up-and-down distributed connecting arms 8 respectively, one end of the connecting arm 8 is rotatably connected with the side wall of the movable frame 6 through a pin shaft 81, the other end of the connecting shaft extends into the space between the side wall of the furnace door 5 and the inner wall of the lifting frame 4, and the other end of the connecting arm 8 is rotatably connected with the side wall of the lifting frame 4 through a pin shaft 82, and a longitudinal movable hole 83 is arranged below the pin shaft 82, a sliding shaft 84 is horizontally arranged in the movable hole 83, and one end of the sliding shaft 84 is fixedly connected with the side wall of the furnace door 5. The drive cylinder 7 adopts two left and right hydraulic drive cylinders 7, one end of the two drive cylinders 7 is hingedly connected with the inner wall at the top of the lifting frame 4, and one end of the piston rod of the two drive cylinders 7 is hingedly connected with the top of the movable frame 6, so that the drive cylinder 7 drives the movable frame 6 to displace and drives the furnace door 5 to displace forward and backward on the lifting frame 4 under the driving of the connecting arm 8, so as to realize the close sealing of the furnace door 5 and the furnace opening of the furnace body 1.

[0021] In the embodiment, the linkage arm 8 is in Z-shaped structure, one end of the linkage arm 8 extends upward and is provided with a pin shaft 81, the other end of the linkage arm 8 extends downward and is provided with the movable hole 83, the movable hole 83 is in waist-shaped hole structure, the width of the movable hole 83 is adapted to the diameter of the slide shaft 84, the position of the movable hole 83 is close to the position of the pin shaft 82, so that the linkage arm 8 can rotate in a small range along the pin shaft 82, and the effect of pushing the oven door 5 to move forward and backward is achieved.

[0022] In the embodiment, the oven door 5 is provided with the sealing end 51 on one end surface, the sealing end 51 is adapted to the size and shape of the oven mouth, and the periphery of the sealing end 51 is provided with an inclined surface, the trolley 2 is arranged in the oven body 1, and the rear end top edge of the trolley 2 is also provided with an inclined surface and is tightly matched with the sealing end 51 of the oven door 5 to realize sealing.

[0023] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A furnace door sealing structure for a bogie hearth furnace, characterized in that, The utility model relates to a furnace body (1), lifting frame (3), lifting furnace door assembly, lifting furnace door assembly is set up in the furnace mouth one end of furnace body (1) through lifting frame (3), lifting furnace door assembly includes lifting frame (4), furnace door (5), movable frame (6), drive cylinder (7) and linkage arm (8), lifting frame (4) top is driven connection through chain wheel assembly (31) with the drive motor (32) of setting up on lifting frame (3), and the both sides of lifting frame body are slidably connected with the track of both sides of lifting frame (3) through the roller (41), the furnace door (5) is slidably arranged on the inner wall of lifting frame (4) through the horizontally arranged slide rail (42), the movable frame (6) is arranged at the front end of furnace door (5), and the movable frame (6) is connected with the both sides of furnace door (5) through at least two linkage arms (8) respectively, one end of linkage arm (8) is rotatably connected with the side wall of movable frame (6) through pin shaft one (81), the other end of linkage arm (8) is rotatably connected with the side wall of lifting frame (4) through pin shaft two (82), and the connecting arm is located below pin shaft two (82) and is provided with longitudinal movable hole (83), the slide shaft (84) is horizontally arranged in movable hole (83), and one end of slide shaft (84) is fixedly connected with the side wall of furnace door (5), one end of drive cylinder (7) is hingedly connected with the inner wall of lifting frame top, and one end of the piston rod of drive cylinder (7) is hingedly connected with the top of movable frame (6), so that drive cylinder (7) is displaced by pushing movable frame (6), and furnace door (5) is pushed on lifting frame (4) by linkage arm (8) and is displaced forward and backward, to realize the fit sealing of furnace door (5) and furnace body (1) furnace mouth.

2. A door seal structure for a pit furnace as set forth in claim 1, wherein The linkage arm (8) is Z-shaped structure, and one end of the linkage arm (8) extends upward and is connected with the pin shaft one (81), and the other end of the linkage arm (8) extends downward and is provided with the movable hole (83).

3. A door seal structure for a pusher furnace as set forth in claim 2, wherein The movable hole (83) is a waist-shaped hole structure, and the width of the movable hole (83) is adapted to the diameter of the slide shaft (84).

4. The door seal structure of a pusher-type furnace as recited in claim 1, wherein One end surface of the furnace door (5) is provided with a sealing end (51) adapted to the size of the furnace mouth, and the side edges around the sealing end (51) are inclined surfaces.

5. A door seal structure for a pusher furnace as set forth in claim 4, wherein The rear end top edge of the trolley (2) is an inclined surface, and the sealing end (51) of the furnace door (5) is tightly fitted to realize sealing.

6. A door seal structure for a pit furnace as defined in claim 1, wherein The width of the movable frame (6) is adapted to the width of the furnace door (5).

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