CN214470090U

CN214470090U - Safety furnace door device

Info

Publication number: CN214470090U
Application number: CN202120754889.8U
Authority: CN
Inventors: 熊智鹏; 熊东亮; 毛宗府; 周飞; 陈敬福
Original assignee: Fengcheng Hualong Metal Products Co ltd
Current assignee: Fengcheng Hualong Metal Products Co ltd
Priority date: 2021-04-11
Filing date: 2021-04-11
Publication date: 2021-10-22
Anticipated expiration: 2031-04-11

Abstract

The utility model discloses a safe furnace door device. The automatic balance furnace comprises a furnace door, movable guide rails, a hinge device and a balance adjusting device, wherein the movable guide rails are respectively positioned on two opposite sides of a furnace opening and connected between the furnace door and a furnace body, the hinge device is connected between the upper end of the movable guide rail and the furnace body, and the balance adjusting device comprises an automatic balance spiral spring which is fixedly or movably connected between the furnace body and the middle part or the upper part of the movable guide rail. The safe furnace door device has simple and reasonable structure, energy conservation and extremely simple, convenient and safe operation.

Description

Safety furnace door device

Technical Field

The utility model relates to a safe furnace gate device.

Background

The operation control of the furnace door of the existing metal recovery smelting treatment device is mostly controlled from the aspect of an electric driving device, and because the action of the device triggers the unreasonable structure of a control component, the device has the disadvantages of relatively complex composition, easy failure, low operation reliability, relatively poor safety and unreliable action of some control components, and particularly under the severe production environment, the complexity of protection measures and structural composition also needs to be improved. And the furnace door is easy to collide with the furnace opening during operation, has poor closeness and other safety problems, and has low operation reliability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that above-mentioned prior art exists, provide a safe furnace gate device. The safe furnace door device has simple and reasonable structure, energy conservation and extremely simple, convenient and safe operation.

The utility model discloses safe furnace gate device's technical scheme, including the furnace gate, be located the relative both sides of fire door respectively, connect in movable guide between furnace gate and the furnace body, connect in articulated mounting between movable guide upper end and the furnace body still includes balanced adjusting device, balanced adjusting device including fixed or swing joint in the furnace body with automatic balance coil spring between movable guide's middle part or the upper portion.

The utility model has simple and reasonable structure, and especially has safe, stable and reliable operation.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention; fig. 2 is a schematic view of a partial cross-sectional structure of an embodiment of the anti-shake safety device of the present invention; fig. 3 is a schematic sectional view of an embodiment of the position limiting control device of the present invention; fig. 4 is a schematic sectional structure view of another embodiment of the limiting control device of the present invention.

Detailed Description

In order to facilitate a better understanding of the present invention, the present invention will be further described with reference to the following embodiments and drawings. As shown in fig. 1-3. The safe furnace door device comprises a furnace door 3 arranged at a furnace mouth at one corresponding side of a smelting furnace 1, a movable guide rail 4 arranged at the furnace mouth, a corresponding limiting lifting device and the like. The upper end of the movable guide rail is hinged to the furnace body, the lower part of the movable guide rail is connected to the furnace body through a furnace door lock control piston cylinder 2, and the furnace door is connected to the movable guide rail in an up-and-down rolling mode through a limiting lifting device. The limit lifting device comprises guide limit grooves 5 which are respectively arranged on the side walls of the movable guide rails 4 at the two sides of the furnace mouth and are opposite to each other, two idler wheels 6 which are arranged at the upper part and the lower part of the two opposite sides of the furnace door and are correspondingly connected with the guide limit grooves in a rolling way, and the like.

The upper end fixedly connected with hinge lug 7 of furnace body, movable guide's upper end fixedly connected with articulated shaft 12, arc shaft hole 8 has been seted up to articulated shaft 12, and movable guide passes through the arc shaft hole of articulated shaft and connects on hinge lug 7. The arc-shaped shaft holes with two opposite arc-shaped side edges are arranged to incline at an angle towards the lower and outer side directions simultaneously.

Furnace door lifting lugs 10 are fixedly arranged on two sides of the upper end of a furnace door 3 respectively, waist-shaped self-avoiding shaft holes 9 inclined towards the downward direction and the outer side direction are arranged in lifting lug shaft holes of the furnace door lifting lugs, one end of a lifting lug shaft 14 is movably connected with the waist-shaped self-avoiding shaft holes of the furnace door lifting lugs 10, and the other end of the lifting lug shaft is connected with the furnace door. The lifting sling is connected with the furnace door lifting lug and the corresponding furnace door lifting driving device.

The safety furnace door device also comprises a balance adjusting device. The balance adjusting device comprises an automatic balance spiral spring 11, one end of the automatic balance spiral spring is fixedly or movably hinged at the corresponding part of the furnace body, and the other end of the automatic balance spiral spring is in contact connection with the inner side wall surface of the movable guide rail.

The safety furnace door device further comprises a limit control device, wherein the limit control device comprises a limit block 13 which is arranged at the upper part and the lower part of a guide limit groove of the movable guide rail and corresponds to a roller at the upper part and the lower part of the furnace door, a circular hidden blind hole 15 arranged on the limit block, an electric contact switch arranged in the circular hidden blind hole, a circular telescopic trigger barrel 16 corresponding to the circular hidden blind hole and the like. The cylinder opening of the telescopic trigger cylinder is provided with a ring concave platform 19, one end of the cylinder opening of the telescopic trigger cylinder is fixedly connected with the ring concave platform of the round blind hole 15, a static contact 18 of an electric contact switch is fixed on the bottom wall of the round blind hole through an insulating plate 21, one end of a movable contact 17 of the electric contact switch is fixed on the inner wall surface of a bottom plate (bottom wall) of the telescopic trigger cylinder, and the other end of the movable contact 18 corresponds to the static contact. The movable contact of the electric contact switch is composed of a reed. One end of the closed bottom plate of the telescopic trigger cylinder body protrudes out of the outer wall surface of the limiting block. The telescopic trigger cylinder body is made of elastic materials such as rubber. The elasticity of the telescopic trigger cylinder and the height of the telescopic trigger cylinder protruding out of the outer wall surface of the limiting block form the telescopic stroke of the movable contact of the electric contact switch. When the roller is pressed on the outer wall surface of the limiting block, the elasticity of the telescopic trigger cylinder is enough to close the movable contact and the static contact of the electric contact switch. The electric contact switches are connected with corresponding oven door controllers. The circular telescopic trigger cylinder 16 is circular in plan view, and the shape of the upper wall surface corresponds to the shape of the roller. The round blind hidden holes 15 of the limiting blocks 13 at the upper part and the lower part of the guide limiting groove 5 are arranged oppositely. The elastic component has high relative strength, good durability, simplicity, easy manufacture, small volume and high reliability.

One end of the limiting block is inserted into a mounting groove 20 arranged on the bottom wall of the guide limiting groove of the movable guide rail and is fixed by screws so as to support the furnace door.

The operation of the limit control device is as follows: when the roller of the lower part of the furnace door descends to touch the lower part limiting block, the bottom plate (bottom wall surface) of the telescopic trigger cylinder 16 moves downwards, the bottom wall surface drives the movable contact to move downwards to contact with the static contact, the electric contact switch is closed, and the corresponding controller controls to stop the descending of the furnace door and close the furnace opening. When the oven door is opened, the controller is started through the door opening control key, the oven door lifting driving device operates to enable the oven door to ascend, when the oven door ascends to the upper roller of the oven door to touch the upper limiting block of the movable guide rail, the telescopic trigger cylinder body is jacked and moved upwards, the corresponding movable contact moves upwards to be in contact with the stationary contact, the upper electric contact switch is closed, and the controller controls the oven door to stop. The control circuit can be similar to the prior art.

Operation of the furnace door: closing the furnace door: the furnace door descends to the position where the roller of the furnace door is pressed to touch the lower limit block to the furnace opening, the lower electric contact switch is closed, the corresponding controller controls the furnace door lock control piston cylinder to shrink, the lower end of the movable guide rail is matched with the hinged shaft hole 8 at the upper end of the movable guide rail, and the movable guide rail enables the furnace door to be tightly pressed on the furnace opening to close and seal the furnace door. Opening a furnace door: the controller controls the furnace door lock control piston cylinder to extend out, and the movable guide rail drives the furnace door to leave the furnace mouth to form an interval with the side wall of the furnace body. The furnace door moves up and down freely in the guide limiting groove of the movable guide rail. When the oven door is closed, the upper wall surface of the limiting block supports the oven door.

The inclined arc shaft hole is matched with the automatic balance spiral spring, so that the upper part and the lower part of the furnace door can be synchronously pressed on the furnace mouth in an integral balance manner, seamless automatic and reliable pressing and sealing of the furnace door are realized, and the furnace door can be prevented from being blocked when being loosened. The anti-shake safety device can implement auxiliary safety protection on the furnace door, and the lifting sling can be pulled to slide to one side of the furnace door deviating from the furnace body at the moment of lifting and starting the furnace door, so that the furnace door collision caused by shake is avoided. The limit control device has better dynamic sealing performance. And normal operation under severe environment is met.

Example 2, as shown in figure 4. The limiting control device comprises a limiting block 13 arranged at the upper part and the lower part, a round hidden blind hole or a rectangular groove which are opposite to each other, and a round or rectangular telescopic trigger tube 16a, wherein one end of the inner side of the round or rectangular telescopic trigger tube 16a is fixedly connected with the annular concave table surface of the hidden groove, the other end of the round or rectangular telescopic trigger tube is connected with a rigid equalizing plate 21, and moving and static contacts of an electric contact switch are respectively connected with the inner wall surfaces of an insulating plate and the rigid equalizing plate. The quick transmission of the applied pressure can be realized, the response speed of the action is further improved, and the service life of a round or rectangular telescopic trigger tube and the like is prolonged. The rest of the structure and the corresponding operation control manner of this example can be similar to those of embodiment 1 described above.

In the embodiment 3, the telescopic trigger tube or the telescopic trigger cylinder is in a table shape, so that the phenomenon of seizure possibly occurring between the telescopic trigger tube or the telescopic trigger cylinder and the annular concave table can be avoided. The rest of the structure and the corresponding operation control manner of this example can be similar to those of embodiment 1 described above.

Claims

1. A safe furnace door device comprises a furnace door, movable guide rails and a balance adjusting device, wherein the movable guide rails are respectively positioned on two opposite sides of a furnace opening and connected between the furnace door and a furnace body, the hinge device is connected between the upper end of the movable guide rail and the furnace body, and the balance adjusting device is characterized by further comprising an automatic balance spiral spring which is fixedly or movably connected between the furnace body and the middle part or the upper part of the movable guide rail.