CN216738441U

CN216738441U - Furnace door for natural gas heat treatment furnace

Info

Publication number: CN216738441U
Application number: CN202123065931.4U
Authority: CN
Inventors: 韩涛; 杨莉
Original assignee: Jiangsu Fengdong Environmental Protection Technology Co ltd
Current assignee: Jiangsu Fengdong Environmental Protection Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-06-14
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a furnace door for a natural gas heat treatment furnace, which comprises a furnace door frame and a furnace door assembly, wherein a screw rod lifter is arranged in the middle of the top of the furnace door frame, the upper end of a screw rod is connected with the screw rod lifter, and the lower end of the screw rod is connected with the top of an upper casting die; a furnace door assembly is arranged right below the upper pressing piece, the upper pressing piece at least comprises a pressing plate, and an upper wedge block is arranged in the middle below the pressing plate; the furnace door assembly at least comprises a furnace door body, the furnace door body is provided with an inner cavity, a furnace door core is arranged in the inner cavity, the top of the furnace door core is provided with a lower wedge block matched with the upper wedge block, the back of the furnace door core is provided with a plurality of springs fixedly connected with the inner cavity wall, and through a special pushing structure, the furnace door is not contacted with a furnace body all the time in the opening and closing process, so that the problem of abrasion of a heat insulation layer on the inner side of the furnace door is solved, and the service life of the furnace door is prolonged.

Description

Furnace door for natural gas heat treatment furnace

Technical Field

The utility model relates to a processing furnace technical field, in particular to a furnace door for natural gas heat treatment furnace.

Background

The heat treatment furnace is a general name of an industrial furnace for performing various metal heat treatments on metal workpieces, the types and the structures of the heat treatment furnace are various due to the variety of heat treatment process types and the shapes and the sizes of the heat treatment workpieces, and the heat treatment furnace has a plurality of classification methods, which are classified according to a mechanical mode: roller hearth furnaces, walking-beam furnaces, car-type furnaces, external mechanized chamber furnaces, chain furnaces, rotary hearth furnaces, vibrating hearth furnaces, bell-type furnaces, etc. The heat treatment furnace can be divided into electric heating and natural gas heating according to the heating mode, and the natural gas is widely adopted due to low price.

The vertical lifting type opening and closing of the furnace door of the traditional natural gas heat treatment furnace has the following defects: the heat insulating layer on the inner side of the furnace door is abraded by friction with the furnace body, so that a gap between the furnace door and the furnace body is enlarged, and the sealing performance and the heat insulating performance of the furnace door are reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a furnace gate that natural gas heat treatment furnace was used solves the problem of the furnace gate and the furnace body wearing and tearing of traditional natural gas heat treatment furnace.

The utility model adopts the technical proposal that: a furnace door for a natural gas heat treatment furnace comprises a furnace door frame and a furnace door assembly, wherein a screw rod lifter is arranged in the middle of the top of the furnace door frame, the upper end of a screw rod is connected with the screw rod lifter, and the lower end of the screw rod is connected with the top of an upper casting die;

a furnace door assembly is arranged right below the upper casting die, and the upper casting die and the furnace door assembly are both arranged on the furnace door frame;

the upper pressing piece at least comprises a pressing plate, the top of the pressing plate is connected with the lower end of the screw rod, and an upper wedge block is arranged in the middle below the pressing plate;

the furnace door assembly at least comprises a furnace door body, the furnace door body is provided with an inner cavity, a furnace door core is arranged in the inner cavity, the top of the furnace door core is provided with a lower wedge block matched with the upper wedge block, the upper wedge block and the lower wedge block are provided with a pair of mutually attached inclined planes, and the upper wedge block acts on the inclined plane to enable the furnace door core to protrude out of the inner cavity to move towards a furnace opening arranged on a furnace body and block the furnace opening;

an edge gap for the furnace door core to move left and right is formed in one side, close to the furnace opening, of the inner cavity;

the back of the furnace door core is provided with a plurality of springs fixedly connected with the inner cavity wall;

the front end and the rear end of the side face of the pressing plate, which is far away from the furnace opening, are respectively provided with a suspension pull block, the furnace door body is provided with corresponding suspension pull rods on the same side, each suspension pull block is provided with a groove with a specific length, and the suspension pull rods are arranged in the grooves.

Furthermore, the furnace door frame is provided with two vertically arranged frame columns, the frame columns are provided with rolling grooves which are arranged in the vertical direction, and the furnace door body is provided with rollers on one side of the frame columns.

Furthermore, the upper and lower rollers are provided with two rollers.

Furthermore, a door core protruding block which can be clamped in the furnace mouth is arranged on one side, facing the furnace mouth, of the furnace door core.

The beneficial effects of the utility model reside in that: through special promotion structure, the furnace gate is in the in-process that opens and shuts not contact with the furnace body all the time, does not have the problem of the inboard insulating layer wearing and tearing of furnace gate, prolongs the life of furnace gate.

Drawings

FIG. 1 is a schematic view of the structure of a hanging door of the present invention;

FIG. 2 is a partially enlarged schematic view of the present invention;

FIG. 3 is a schematic view of the internal structure of the hanging door of the present invention;

FIG. 4 is a schematic view of the hanging door separated from the door frame;

FIG. 5 is a schematic view showing a state of the drop door of the present invention pressed downward;

FIG. 6 is a view showing the hanging door of the present invention being engaged with the furnace body;

wherein:

1-furnace body, 1 a-furnace mouth;

2-a screw rod;

3-a screw rod lifter;

4-furnace door frame, 4 a-frame column and 4 aa-rolling groove;

5-upper pressing piece, 5 a-pressing plate, 5 b-hanging pulling block, 5 c-upper wedge block and 5 ba-groove;

6-furnace door assembly, 6 a-furnace door body, 6 b-suspension pull rod, 6 c-lower wedge block, 6 d-spring, 6 e-furnace door core, 6 f-door core lug, 6 g-roller, 6 aa-inner cavity and 6 ab-side notch.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the objects of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.

Technical scheme in the embodiment of this application for solving the furnace gate of traditional heat treatment furnace and furnace body friction cause wearing and tearing influence closing cap problem, the general thinking is as follows:

referring to fig. 1 to 3, a furnace door for a natural gas heat treatment furnace includes a furnace door frame 4 and a furnace door assembly 6, a screw rod lifter 3 is centrally disposed on the top of the furnace door frame 4, the upper end of a screw rod 2 is connected to the screw rod lifter 3, the lower end of the screw rod 2 is connected to the top of an upper pressing member 5, the furnace door assembly 6 is disposed under the upper pressing member 5, the upper pressing member 5 and the furnace door assembly 6 are both mounted on the furnace door frame 4, the upper pressing member 5 at least includes a pressing plate 5a, the top of the pressing plate 5a is connected to the lower end of the screw rod 2, an upper wedge block 5c is centrally disposed under the pressing plate 5a, the furnace door assembly 6 at least includes a furnace door body 6a, the furnace door body 6a has an inner cavity 6aa, a furnace door core 6e is disposed in the inner cavity 6aa, and a lower wedge block 6c adapted to the upper wedge block 5c is disposed on the top of the furnace door core 6e, the upper wedge block 5c and the lower wedge block 6c are provided with a pair of inclined planes which are attached to each other, the lead screw lifter drives the lead screw 2 to move downwards, the upper wedge block 5c acts on the inclined planes to enable the furnace door core 6e to protrude out of the inner cavity 6aa to move towards the furnace opening 1a arranged on the furnace body 1 and block the furnace opening 1a to realize sealing operation, a structure shown in a figure 5 is provided, in order to enable the furnace door core 6e to enter and exit from the inner cavity 6aa, one side, close to the furnace opening 1a, of the inner cavity 6aa is provided with a side notch 6ab for the furnace door core 6e to move left and right, and a structure shown in a figure 3 is a sectional view of the furnace door body 6 a.

The back of the oven door core 6e is provided with a plurality of springs 6d fixedly connected with the wall of the inner cavity 6aa, so that the oven door core 6e is pulled back into the inner cavity 6aa after the upper wedge block 5c is separated from the lower wedge block 6 c;

the front end and the rear end of the side face of the pressure plate 5a far away from the furnace opening 1a are respectively provided with a suspension pull block 5b, the furnace door body 6a is provided with corresponding suspension pull rods 6b on the same side, the suspension pull blocks 5b are provided with grooves 5ba with specific length arranged along the vertical direction, and the suspension pull rods 6b are arranged in the grooves 5 ba.

In order to better facilitate the up-and-down movement of the oven door body 6a, the oven door frame 4 has two vertically arranged frame columns 4a, the frame columns 4a have rolling grooves 4aa arranged in the up-and-down direction, rollers 6g are arranged on one side of the frame columns 4a of the oven door body 6a, the rollers 6g can be arranged at the central position when the number of the rollers 6g is one, or can be arranged at 2, and one roller is arranged up and down, as shown in fig. 4, two rollers 6g are shown in fig. 4.

In order to better seal the cylindrical furnace mouth 1a, a door core projection 6f which can be clamped in the furnace mouth 1a is arranged on one side of the furnace door core 6e facing the furnace mouth 1 a.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed by the preferred embodiment, it is not limited to the present invention, and any person skilled in the art can make modifications or changes equivalent to the equivalent embodiments using the above disclosed technical content without departing from the technical scope of the present invention, but all modifications, changes and modifications of the above embodiments based on the technical essence of the present invention still belong to the technical scope of the present invention.

Claims

1. The furnace door for the natural gas heat treatment furnace comprises a furnace door frame (4) and a furnace door assembly (6), and is characterized in that a screw rod lifter (3) is arranged in the middle of the top of the furnace door frame (4), the upper end of a screw rod (2) is connected with the screw rod lifter (3), and the lower end of the screw rod (2) is connected with the top of an upper pressing piece (5);

a furnace door assembly (6) is arranged right below the upper pressing piece (5), and the upper pressing piece (5) and the furnace door assembly (6) are both arranged on the furnace door frame (4);

the upper pressing piece (5) at least comprises a pressing plate (5 a), the top of the pressing plate (5 a) is connected with the lower end of the screw rod (2), and an upper wedge block (5 c) is arranged in the middle below the pressing plate (5 a);

the furnace door assembly (6) comprises a furnace door body (6 a), the furnace door body (6 a) is provided with an inner cavity (6 aa), a furnace door core (6 e) is arranged in the inner cavity (6 aa), the top of the furnace door core (6 e) is provided with a lower wedge block (6 c) matched with the upper wedge block (5 c), the upper wedge block (5 c) and the lower wedge block (6 c) are provided with a pair of attached inclined planes, and the upper wedge block (5 c) acts on the inclined planes to enable the furnace door core (6 e) to protrude out of the inner cavity (6 aa) to move towards a furnace opening (1 a) arranged on the furnace body (1) and block the furnace opening (1 a);

an edge gap (6 ab) for the left and right movement of the furnace door core (6 e) is arranged on one side of the inner cavity (6 aa) close to the furnace opening (1 a);

a spring (6 d) fixedly connected with the wall of the inner cavity (6 aa) is arranged on the back of the furnace door core (6 e);

the front end and the rear end of the side face of the pressing plate (5 a) far away from the side of the furnace opening (1 a) are respectively provided with a suspension pull block (5 b), the same side of the furnace door body (6 a) is provided with a corresponding suspension pull rod (6 b), the suspension pull block (5 b) is provided with a groove (5 ba) which is arranged along the vertical direction and has a specific length, and the suspension pull rod (6 b) is arranged in the groove (5 ba).

2. The fire door for a natural gas heat treatment furnace according to claim 1, wherein the fire door frame (4) has two vertically disposed frame columns (4 a), the frame columns (4 a) have rolling grooves (4 aa) disposed in an up-and-down direction, and the fire door body (6 a) is provided with rollers (6 g) at one side of the frame columns (4 a).

3. The door for natural gas heat treatment furnace according to claim 2, wherein two rollers (6 g) are provided one above the other.

4. The furnace door for the natural gas heat treatment furnace according to claim 1, wherein a door core protrusion (6 f) which can be caught in the furnace opening (1 a) is provided on a side of the furnace door core (6 e) facing the furnace opening (1 a).