CN216159638U

CN216159638U - Furnace door sealing structure

Info

Publication number: CN216159638U
Application number: CN202122242464.1U
Authority: CN
Inventors: 李科
Original assignee: Guangdong Vocational and Technical College
Current assignee: Guangdong Vocational and Technical College
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-01
Anticipated expiration: 2031-09-15

Abstract

The utility model discloses a furnace door sealing structure, comprising: the furnace comprises a furnace body, a rack, a lifting door, a door frame and a connecting rod mechanism, wherein the front end of the furnace body is provided with an inlet; the frame is provided with a movable groove extending in the up-down direction; the lifting door is positioned on the front side of the furnace body, is embedded into the movable groove and can move up and down to seal the inlet; the door frame is sleeved on the furnace body and can move along the front-back direction, and sealing materials are arranged between the door frame and the furnace body; the connecting rod mechanism is movably connected to the rack, the lifting door drives the connecting rod mechanism to move when descending, and the connecting rod mechanism is used for driving the door frame to move forwards so that the door frame abuts against the lifting door when the inlet of the lifting door is closed. According to the furnace door sealing structure provided by the utility model, when the lifting door moves up and down, friction cannot be formed between the lifting door and the furnace body, the service life of the sealing part is prolonged, and the maintenance times are effectively reduced.

Description

Furnace door sealing structure

Technical Field

The utility model relates to the field of heat treatment furnaces, in particular to a furnace door sealing structure.

Background

The bogie hearth furnace is a national standard energy-saving periodic operation furnace, has a super energy-saving structure, adopts composite fiber for heat preservation, is integrally connected with a rail, does not need basic installation, can be used on a horizontal ground, is mainly used for quenching, annealing and aging of high-chromium and high-manganese steel castings, grey iron castings, nodular iron castings, rollers, steel balls, crusher hammers and wear-resistant lining plates and heat treatment of various mechanical parts, is provided by the speed reduction of a motor through a worm and gear reducer and the chain transmission, and is provided with an electromagnetic brake for proper adjustment.

The sealing device for the furnace door of the trolley furnace is used for sealing between the furnace door of the trolley furnace and a furnace body and preventing heat in the furnace from running out, so that a closed structure is formed in a furnace chamber, the furnace door seal of the original trolley furnace is mostly a dead weight type compression and spring type compression structure, the soft seal between the furnace door and the furnace body in the previous compression mode can form friction, and the sealing part can be worn and torn to influence the overall seal of the furnace chamber as long as time passes.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the furnace door sealing structure which can reduce the friction of the furnace door sealing structure and prolong the service life of the furnace door.

An oven door sealing structure according to an embodiment of a first aspect of the present invention includes: the furnace comprises a furnace body, a rack, a lifting door, a door frame and a connecting rod mechanism, wherein the front end of the furnace body is provided with an inlet; the rack is provided with a movable groove extending in the vertical direction; the lifting door is positioned on the front side of the furnace body, is embedded into the movable groove and can move up and down, and is used for sealing the inlet; the door frame is sleeved on the furnace body and can move in the front-back direction, and a sealing material is arranged between the door frame and the furnace body; the connecting rod mechanism is movably connected to the rack, the lifting door drives the connecting rod mechanism to move when descending, and the connecting rod mechanism is used for driving the door frame to move forwards so that when the lifting door closes the inlet, the door frame abuts against the lifting door.

According to the embodiment of the utility model, the furnace door sealing structure at least has the following technical effects: according to the furnace door sealing structure provided by the embodiment of the utility model, the lifting door is lowered to drive the connecting rod mechanism to move so as to push the door frame to press the lifting door forwards, the door frame and the lifting door are sealed, and the door frame and the furnace body are sealed by the sealing material. When the lifting door moves up and down, friction cannot be formed between the lifting door and the furnace body, the service life of the sealing part is prolonged, and the maintenance frequency is effectively reduced.

According to some embodiments of the present invention, the link mechanism includes a lever, the lever includes a central fulcrum, an output rod, and a power rod, the output rod and the power rod are respectively located at two sides of the central fulcrum, the rack is fixedly connected with a first bracket, the central fulcrum is movably connected with the first bracket, the output rod is in transmission connection with the door frame, the power rod is located on a moving path of the lift door, and the power rod is configured to contact with a bottom end of the lift door when the lift door descends to rotate the lever, so that the output rod drives the door frame to move against the lift door.

According to some embodiments of the present invention, the link mechanism includes a support rod and a transmission rod, a second bracket is fixedly connected to the frame, the second bracket is located above the first bracket, one end of the support rod is movably connected to the second bracket, the other end of the support rod is movably connected to the upper end of the transmission rod, the lower end of the transmission rod is movably connected to the output rod, the length of the support rod is matched with the output rod so as to keep the transmission rod vertical, the transmission rod can move back and forth under the driving of the output rod so as to drive the door frame to move, and a transmission block matched with the transmission rod is arranged on the door frame.

According to some embodiments of the utility model, two link mechanisms are provided, and are symmetrically arranged on the left side and the right side of the door frame respectively.

According to some embodiments of the utility model, a bottom plate capable of moving back and forth is arranged in the furnace body, the front end of the bottom plate is provided with an inclined plane sealing strip, and the lower end of the lifting door is provided with a chamfer matched with the inclined plane sealing strip.

According to some embodiments of the utility model, a reset mechanism is provided at a side of the furnace body for driving the door frame to move backward.

According to some embodiments of the utility model, the reset mechanism comprises a sleeve, a spring and a pull rod, the sleeve is fixedly connected to the furnace body, one end of the pull rod is connected with the door frame, the other end of the pull rod is connected with the spring, the pull rod is partially embedded into the sleeve, and the spring is located in the sleeve and drives the pull rod to move backwards.

According to some embodiments of the utility model, the frame is connected with a lifting mechanism for driving the lifting door to move up and down.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is a schematic view of a lift gate of an embodiment of the present invention;

FIG. 3 is a schematic view of a linkage mechanism according to an embodiment of the present invention;

FIG. 4 is a lever diagram of an embodiment of the present invention;

FIG. 5 is a schematic view of a door frame according to an embodiment of the present invention;

fig. 6 is a schematic view of a reset mechanism of an embodiment of the present invention.

Reference numerals:

a furnace body 100, an inlet 110;

a frame 200, a movable groove 210, a first bracket 220 and a second bracket 230;

a lift gate 300, a chamfer 310;

door frame 400, sealing material 410, driving block 420;

the device comprises a link mechanism 500, a lever 510, a central fulcrum 511, an output rod 512, a power rod 513, a support rod 520 and a transmission rod 530;

a bottom plate 600, a bevel seal strip 610, a wheel 620;

a reset mechanism 700, a sleeve 710, a spring 720, a pull rod 730;

a lifting mechanism 800.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, an oven door sealing structure according to an embodiment of the present invention includes: the furnace body 100, the frame 200, the lifting door 300, the door frame 400, and the link mechanism 500. An inlet 110 is formed at the front end of the furnace body 100, and the inlet 110 is used for the entry and exit of the heat-treated parts. The frame 200 is fixed on the ground and positioned at the front side of the furnace body 100, and the frame 200 is provided with a movable groove 210 extending in the vertical direction; the elevating door 300 is located at the front side of the furnace body 100, the elevating door 300 is inserted into the movable groove 210 and can move up and down, the elevating door 300 is used for closing the inlet 110, and the parts in the furnace body 100 need to seal the inlet 110 to prevent heat loss when being heated. The door frame 400 is sleeved on the furnace body 100 and can move along the front-back direction, the door frame 400 can move forward to abut against the lifting door 300 so as to seal the door frame 400 and the lifting door 300, the lifting door 300 is provided with a high-temperature-resistant sealing strip corresponding to the door frame 400 so as to improve the sealing effect, a sealing material 410 is arranged between the door frame 400 and the furnace body 100, and the door frame 400 is positioned on the outer side of the furnace body 100, so that the temperature and the external environment temperature have little difference, and the sealing material 410 can be made of rubber with better mechanical property and without high temperature resistance. The link mechanism 500 is movably connected to the frame 200, the lifting door 300 drives the link mechanism 500 to move when descending, the link mechanism 500 is used for driving the door frame 400 to move forward, and the stroke of the lifting door 300 is matched with that of the door frame 400, so that when the lifting door 300 closes the inlet 110, the door frame 400 abuts against the lifting door 300.

According to the furnace door sealing structure provided by the utility model, the lifting door 300 is used for driving the connecting rod mechanism 500 to move when descending, so that the door frame 400 is pushed forwards to press the lifting door 300, the door frame 400 and the lifting door 300 are sealed, and the door frame 400 and the furnace body 100 are sealed by the sealing material 410. When the elevating door 300 moves up and down, friction is not formed between the elevating door 300 and the furnace body 100, thus prolonging the service life of the sealing part and effectively reducing the maintenance times.

In some embodiments of the present invention, the link mechanism 500 includes a lever 510, the lever 510 includes a central fulcrum 511, an output rod 512, and a power rod 513, the output rod 512 and the power rod 513 are respectively located at two sides of the central fulcrum 511, the rack 200 is welded with a first bracket 220, the central fulcrum 511 is hinged with the first bracket 220, and the first bracket 220 is used for providing a fulcrum when the lever 510 moves. The output rod 512 is in transmission connection with the door frame 400, the output rod 512 abuts against the rear side of the door frame 400, the door frame 400 can be driven to move forwards by the activity of the output rod 512, the power rod 513 is located on the activity path of the lifting door 300, the power rod 513 is used for contacting with the bottom end of the lifting door 300 when the lifting door 300 descends to enable the lever 510 to rotate, the power rod 513 rotates around the central fulcrum 511 under the driving of the lifting door 300, and the output rod 512 rotates around the central fulcrum 511 to drive the door frame 400 to move forwards to abut against the lifting door 300.

In some embodiments of the present invention, the link mechanism 500 includes a support rod 520 and a transmission rod 530, the frame 200 is welded with the second bracket 230, the second bracket 230 is located above the first bracket 220, one end of the support rod 520 is hinged to the second bracket 230, the other end of the support rod 520 is hinged to the upper end of the transmission rod 530, the lower end of the transmission rod 530 is hinged to the output rod 512, the length of the support rod 520 is matched with the output rod 512 so that the transmission rod 530 is kept vertical, the transmission rod 530 can move back and forth under the driving of the output rod 512 to drive the door frame 400 to move, and the rotation of the output rod 512 is converted into the linear motion of the transmission rod 530 by using the link structure formed by the support rod 520 and the transmission rod 530, so as to drive the door frame 400 to move back and forth. The left and right sides of the door frame 400 are welded with the driving blocks 420 for matching with the driving rod 530, and the contact part of the driving rod 530 and the driving blocks 420 is located at the midpoint of the driving rod 530, so that the driving rod 530 moves more stably.

In some embodiments of the present invention, two link mechanisms 500 are symmetrically disposed on the left and right sides of the door frame 400, respectively, and the door frame 400 is forced to move forward and backward more stably by the simultaneous force on the left and right sides of the door frame 400.

In some embodiments of the present invention, a bottom plate 600 capable of moving back and forth is disposed in the furnace body 100, the bottom plate 600 is used for placing heat-treated components, an inclined sealing strip 610 is disposed at the front end of the bottom plate 600, a chamfer 310 matched with the inclined sealing strip 610 is disposed at the lower end of the lifting door 300, when the lifting door 300 descends to abut against the bottom plate 600, the inclined sealing strip 610 is matched with the chamfer 310 to seal a gap between the lifting door 300 and the bottom plate 600, and a plurality of wheels 620 are disposed at the lower end of the bottom plate 600 to facilitate the back and forth movement of the bottom plate 600.

In some embodiments of the present invention, the reset mechanism 700 is provided at a side of the furnace body 100 for driving the door frame 400 to move backward, and since the link mechanism 500 can only drive the door frame 400 to move forward, the reset mechanism 700 is provided to pull the door frame 400 backward when the lifting door 300 is opened.

In some embodiments of the present invention, the reset mechanism 700 includes a sleeve 710, a spring 720, and a pull rod 730, the sleeve 710 is welded on the furnace body 100, one end of the pull rod 730 is bolted to the door frame 400, the other end is fixedly connected to the spring 720, the pull rod 730 is partially embedded in the sleeve 710, the spring 720 is located in the sleeve 710 and is fixedly connected to the sleeve 710, and the spring 720 is used for driving the pull rod 730 to move backwards.

In some embodiments of the present invention, the frame 200 is connected to a lifting mechanism 800 for driving the lifting door 300 to move up and down, and the lifting mechanism 800 may be an electric hoist, an air cylinder, a speed reduction motor, or the like.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. An oven door sealing structure, comprising:

the front end of the furnace body (100) is provided with an inlet (110);

a frame (200) provided with a movable groove (210) extending in the vertical direction;

the lifting door (300) is positioned on the front side of the furnace body (100), and the lifting door (300) is embedded into the movable groove (210), can move up and down and is used for sealing the inlet (110);

the furnace body (100) is sleeved with the door frame (400) and can move in the front-back direction, and a sealing material (410) is arranged between the door frame (400) and the furnace body (100);

the connecting rod mechanism (500) is movably connected to the rack (200), the lifting door (300) drives the connecting rod mechanism (500) to move when descending, and the connecting rod mechanism (500) is used for driving the door frame (400) to move forwards, so that when the inlet (110) is closed by the lifting door (300), the door frame (400) is abutted to the lifting door (300).

2. An oven door sealing structure according to claim 1, characterized in that: link mechanism (500) includes lever (510), lever (510) include central fulcrum (511), output pole (512), power pole (513), output pole (512) with power pole (513) are located respectively central fulcrum (511) both sides, fixedly connected with first support (220) on frame (200), central fulcrum (511) with first support (220) activity link to each other, output pole (512) with door frame (400) transmission links to each other, power pole (513) are located on the activity route of overhead door (300), power pole (513) are used for when overhead door (300) descend with overhead door (300) bottom contact makes lever (510) take place the rotation, so that output pole (512) drive door frame (400) move to with overhead door (300) offsets.

3. An oven door sealing structure according to claim 2, characterized in that: link mechanism (500) includes bracing piece (520) and transfer line (530), fixedly connected with second support (230) on frame (200), second support (230) are located first support (220) top, bracing piece (520) one end swing joint in on second support (230), other end swing joint in transfer line (530) upper end, transfer line (530) lower extreme with output lever (512) swing joint, the length of bracing piece (520) with output lever (512) match in order to make transfer line (530) keep vertical, transfer line (530) is in activity around output lever (512) drives in order to drive door frame (400) activity, be equipped with on door frame (400) be used for with transfer line (530) complex transmission piece (420).

4. An oven door sealing structure according to claim 3, characterized in that: the two link mechanisms (500) are symmetrically arranged on the left side and the right side of the door frame (400).

5. An oven door sealing structure according to claim 1, characterized in that: the furnace is characterized in that a bottom plate (600) capable of moving back and forth is arranged in the furnace body (100), an inclined sealing strip (610) is arranged at the front end of the bottom plate (600), and a chamfer (310) matched with the inclined sealing strip (610) is arranged at the lower end of the lifting door (300).

6. An oven door sealing structure according to claim 1, characterized in that: the side surface of the furnace body (100) is provided with a reset mechanism (700) which is used for driving the door frame (400) to move backwards.

7. An oven door sealing structure according to claim 6, characterized in that: the reset mechanism (700) comprises a sleeve (710), a spring (720) and a pull rod (730), the sleeve (710) is fixedly connected to the furnace body (100), one end of the pull rod (730) is connected with the door frame (400), the other end of the pull rod is connected with the spring (720), the pull rod (730) is partially embedded into the sleeve (710), and the spring (720) is located in the sleeve (710) and drives the pull rod (730) to move backwards.

8. An oven door sealing structure according to claim 1, characterized in that: the lifting mechanism (800) is connected to the rack (200) and used for driving the lifting door (300) to move up and down.