CN204594239U - Automatic heat preserving bell mechanism - Google Patents

Abstract

The utility model discloses an automatic heat preservation furnace cover mechanism applied in the aluminum alloy casting industry, comprising a furnace cover, the furnace cover is divided into a left furnace cover (2) and a right furnace cover (3) respectively connected with a linkage bracket (12 ), the linkage bracket is connected to the power source (9) through the intermediate transmission assembly; the power source is a cylinder, and the cylinder is electrically connected to the pedal switch (7) through a time relay (8). The utility model can not only realize the rapid opening and closing of the split type furnace cover, but also reduce the single-side working space position of the original integral type furnace cover. It solves the heat source diffusion of the holding furnace, reduces the energy consumption of the holding furnace, reduces the heat radiation of the high temperature of the holding furnace to the operator, and enables the operator to be in a relatively good working environment. And increase the heat preservation effect of aluminum liquid, reduce energy consumption, and the operation is more effective, simple, practical and convenient.

Description

Automatic insulation furnace cover mechanism

technical field

The invention relates to a holding furnace, in particular to a heat holding furnace cover mechanism used in the aluminum alloy casting industry.

Background technique

At present, in the aluminum alloy casting industry, the insulation furnace cover mechanisms used for casting are all designed as normally open integral furnace covers. Since the temperature of the molten aluminum is generally 720-740°C during pouring, if the heat preservation furnace cover is normally open, the heat source emits a large amount of heat, especially in hot summer, the temperature of the pouring area of the workshop is generally 45°C, and sometimes It is close to 50°C, and it is even more unbearably hot next to the holding furnace. Operators work in this environment, which poses a great challenge to their physical strength and physical fitness. In high temperature seasons, some operators have experienced heat stroke one after another. Moreover, the temperature of molten aluminum is easily lost due to the frequent opening of the furnace cover, especially in winter when the temperature difference is large. In order to ensure that the temperature required by the production technology can be reached, the resistance wire is continuously heated, which greatly increases energy consumption. The opening and closing of the heat preservation furnace cover are all controlled by manually scooping the screw rod, which is relatively inconvenient to operate.

Contents of the invention

The object of the present invention is to overcome the above disadvantages, and provide an automatic heat preservation furnace cover mechanism that can automatically control the opening and closing of the furnace cover to achieve effective heat preservation.

The purpose of the present invention is achieved by the following technical solutions: an automatic heat preservation furnace cover mechanism, including a furnace cover, the furnace cover is divided into a left furnace cover and a right furnace cover, which are respectively connected to the linkage bracket, and the linkage bracket is connected with the middle transmission component. The power source is connected; the power source is a cylinder, and the cylinder is electrically connected with a pedal switch through a time relay.

After adopting the structure of the present invention, the power source works through the intermediate transmission assembly to drive the linkage bracket to expand and contract, and then the left furnace cover and the right furnace cover are opened or closed, so as to control the automatic opening and closing of the split furnace cover, according to the needs of the ladle aluminum process. Effective insulation is carried out, which can not only realize the rapid opening and closing of the furnace cover, but also reduce the single-side working space position of the original integral furnace cover. It solves the heat source diffusion of the holding furnace, reduces the energy consumption of the holding furnace, reduces the heat radiation of the high temperature of the holding furnace to the operator, effectively isolates the heat radiation, and enables the operator to be in a relatively good working environment. And increase the heat preservation effect of aluminum liquid, reduce energy consumption, and the operation is more effective, simple, practical and convenient.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the installation structure of the automatic heat preservation furnace cover mechanism of the present invention.

Fig. 2 is a schematic diagram when the furnace cover in Fig. 1 is in a closed state.

Detailed ways

With reference to Fig. 1, Fig. 2, the present invention is applied to the automatic insulation furnace cover mechanism of aluminum alloy foundry industry, comprises furnace cover, and described furnace cover is divided into left furnace cover 2, right furnace cover 3 (both are semicircle type) and respectively with The linkage bracket 12 is connected, and the linkage bracket 12 is connected with the power source 9 through the intermediate transmission assembly; the power source 9 is a cylinder, and the cylinder 9 is electrically connected with the pedal switch 7 through the time relay 8 .

Wherein, the linkage bracket 12 is a scissors telescopic linkage bracket (being a "scissors" action principle), and the intermediate transmission component is an assembly of a screw rod 5 and a nut 10, and the middle part of the screw rod 5 is connected to the power source 9 (i.e. The piston rod of the air cylinder) is connected, and the two ends of the screw rod 5 are connected with the linkage bracket 12 and locked with a nut 10. This linkage support 12 is contained on the support base 4, and this power source 9 is contained on the power source base 6, and furnace cover, power source base 6, support base 4 are all contained on (insulation) body of heater 1. On the furnace body 1, a limit block 11 is installed between the scissor telescopic linkage bracket 12 and the screw rod 5 of the intermediate transmission assembly, so as to control the opening and closing of the left furnace cover 2 and the right furnace cover 3 of the furnace cover. , The linkage of the scissors telescopic linkage bracket 12 is effectively limited.

The cylinder 9, the time relay 8, and the pedal switch 7 are all connected to the microcomputer controller, and the automatic opening and closing of the furnace cover is realized by using the microcomputer controller (that is, a PLC device) to jointly control the pedal switch and the time relay. . Step on the pedal switch, the left and right furnace lids will be opened automatically, and after scooping up the aluminum liquid, the alarm will automatically alarm when the time set on the time relay is reached (the time is set according to the situation of scooping up aluminum). After the alarm, the PLC device sets a 5s safety time, and the left and right furnace covers of the furnace cover are automatically closed.

According to the uncertainty of the frequency of scooping aluminum in the actual process, the present invention determines that the opening and closing of the furnace cover must be flexible and rapid. No matter the opening and closing direction of the integral furnace cover is from the top, from the left, or from the right, it cannot meet the requirements. And because of the limitations of the area around the furnace cover, the integral opening takes up a lot of space, which will cause interference. The present invention is designed on the basis of these characteristics and in combination with the purpose achieved, and overcomes these deficiencies.

First, according to the load bearing of the (insulation) furnace cover, cut and weld the scissor telescopic linkage bracket 12, connect the linkage bracket through the assembly of the screw rod 5 and the nut 10, and fix it on the bracket base 4. The two semicircular left and right furnace covers 2 and 3 are respectively welded on the linkage support, and the linkage support and the furnace cover should respectively have reserved openings for use as thermocouples placed on the heat preservation furnace body. Install the prepared furnace cover and linkage bracket on the furnace surface of the heat preservation furnace body. There is a gap of 6-8mm between the furnace cover and the furnace surface, which is convenient for the opening and closing of the left and right furnace covers. Weld and fix the power source base 6 on the edge of the furnace cover, and install the cylinder. The cylinder has the functions of magnetization and buffering, which is beneficial to the opening, closing and positioning of the furnace cover. According to the size of the opening of the heat preservation furnace body, determine the opening stroke of the furnace cover, and weld the fixed stop block 11 . Connect the gas source and PLC device, and use the time relay and pedal switch to jointly control the opening and closing of the left and right furnace covers.

Claims (2)

1. The automatic heat preservation furnace cover mechanism, including the furnace cover, is characterized in that: the furnace cover is divided into a left furnace cover (2) and a right furnace cover (3) which are connected with the linkage bracket (12) respectively, and the linkage bracket ( 12) Connect to the power source (9) through the intermediate transmission assembly; the power source (9) is an air cylinder, and the air cylinder (9) is electrically connected to the pedal switch (7) through the time relay (8). 2. The automatic heat preservation furnace cover mechanism according to claim 1, characterized in that: the linkage bracket (12) is a scissor telescopic linkage bracket, and the intermediate transmission component is a combination of a screw (5) and a nut (10). Assemblies, the middle part of the screw (5) is connected with the power source (9), the two ends of the screw (5) are connected with the linkage bracket (12) and locked with nuts (10), the linkage bracket (12) is mounted on on the bracket base (4).