CN214470028U

CN214470028U - Metal regeneration smelting device

Info

Publication number: CN214470028U
Application number: CN202120726933.4U
Authority: CN
Inventors: 熊曙雄; 熊曙海; 周海峰; 陈敬福
Original assignee: Jiangxi Hongcheng Aluminium Industry Co ltd
Current assignee: Jiangxi Hongcheng Aluminium Industry 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 metal regeneration smelting device. Including the submergence melting furnace to and smelt the casting furnace, the submergence melting furnace still includes the fast loading and unloading device through smelting circulation passageway and smelting casting furnace UNICOM, the fast loading and unloading device includes the injection pump mounting bracket, loading and unloading guider, and locates the loading and unloading support of injection pump mounting bracket top to and lift drive, loading and unloading guider connects in the guide post of spacing guide sleeve respectively including a plurality of spacing guide sleeves that are fixed in fixing support, the injection pump mounting bracket is connected in this guide post, lift drive connects between injection pump mounting bracket and loading and unloading support. The metal regeneration smelting device has the advantages of simple and reasonable structure, energy conservation, simple, convenient and safe operation, low regeneration smelting loss and high regeneration recovery efficiency.

Description

Metal regeneration smelting device

Technical Field

The utility model relates to a metal regeneration smelting device.

Background

The metal regeneration smelting is a main way and a simple and effective means for fully utilizing the regeneration resources. The smelting furnace is a key device for metal regeneration smelting recovery, and the structure and the operation mode of the smelting furnace have important influence on smelting efficiency, effect, energy conservation and reduction of regeneration and utilization cost. The structure composition, the operation mode and the like of the existing regenerated metal smelting furnace have the need of further improvement and improvement.

For example, the existing metal regeneration smelting device and the smelting mode thereof are not reasonable, and most of the existing metal regeneration smelting device directly heats and smelts a charging furnace, so that on one hand, the energy consumption is high, the smelting effect is poor, on the other hand, the smelting and casting process is complex to operate and is difficult to coordinate, and particularly, the regeneration raw material has large burning loss, low regeneration recovery utilization rate and high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that above-mentioned prior art exists, provide a metal regeneration smelting device. The metal regeneration smelting device has the advantages of simple and reasonable structure, energy conservation, simple, convenient and safe operation, low regeneration smelting loss and high regeneration recovery efficiency.

The utility model discloses metal regeneration smelts device's technical scheme includes the submergence melting furnace to and smelt the casting furnace, the submergence melting furnace still includes the fast loading and unloading device through smelting circulation channel and smelting casting furnace UNICOM, the fast loading and unloading device includes the injection pump mounting bracket, loading and unloading guider, and locates the loading and unloading support of injection pump mounting bracket top to and lift drive arrangement, loading and unloading guider connects the guide post in spacing guide sleeve respectively including a plurality of spacing guide sleeves that are fixed in fixing support, the injection pump mounting bracket is connected in this guide post, lift drive arrangement connects between injection pump mounting bracket and loading and unloading support.

The utility model discloses metal regeneration smelting device smelts mode and operation mode science, reasonable, and the system constitutes simply, and the burning loss of regeneration raw materials is little, and the heat utilization rate is high, and the energy consumption is low, and regeneration smelting efficiency is high, and casting melt composition disposes simply, conveniently. Is suitable for the site layout of different smelting furnaces and the specific production requirements of furnace bodies.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention; FIG. 2 is a schematic view of a top wall removed perspective from another angle of FIG. 1; FIG. 3 is a schematic view of the cut-off injection pump according to the present invention; FIG. 4 is a control schematic diagram of the heat recovery environmental protection device of the present invention; fig. 5 is a schematic view of a connection structure of another embodiment of the immersion melting furnace and the melting and casting furnace according to 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. 1-4. The metal regeneration smelting device comprises an immersion melting furnace 1a, a smelting casting furnace 1b, a corresponding smelting circulating channel 4 and the like. Two ports of the smelting circulation passage 4 are connected to melt ports (holes) of the immersion melting furnace 1a and the smelting and casting furnace 1b, respectively. The immersion melting furnace is provided with a charging spout 3, the melting and casting furnace is provided with a melt heater 33, and a casting discharge port 31. The smelting circulation channel 4 is provided with a shut-off injection pump 5. An upper opening of the smelting circulation channel is provided with an assembled heat preservation cover plate. The heater 33 may be an energy storage heater of an existing smelting furnace. The bottom wall of the corresponding end of the smelting circulation channel 4 is provided with a settling pit 10 which is used for carrying out slag collection on the molten liquid, and the settling pit is provided with a corresponding slag discharge port. An automatic furnace door device is arranged at the furnace mouth of the immersion melting furnace.

The arrangement position of the immersion melting furnace is higher than the corresponding arrangement position of the smelting and casting furnace, namely, the molten liquid of the immersion melting furnace can be directly returned to the smelting and casting furnace through a molten liquid port of the immersion melting furnace through a smelting circulation channel by utilizing the relative position height difference. When the melt is returned to the smelting and casting furnace, the injection pump is not needed to be used for pumping back, the structure is simplified, the energy and equipment investment are saved, and the service life of the equipment is prolonged.

A gas phase balance communicating hole 12 is arranged between the gas phase parts of the immersion melting furnace and the smelting casting furnace. The method can avoid the over-high gas pressure formed in the process of heating or soaking molten liquid in the smelting casting furnace and/or the immersion melting furnace, ensure the safe production and realize the relative balance and stability of the pressure of the two furnaces. The top wall of the smelting and casting furnace is provided with a feed inlet and a heat-insulating sealing cover 1b1, and the caliber of the feed inlet is smaller and is only used for the first time of furnace opening operation. And (3) performing primary blow-in production, namely putting the recycled metal raw material into a smelting and casting furnace from a feeding port, and heating, burning and smelting the raw material in the smelting and casting furnace by a smelting heater to obtain primary smelting melt. After normal production, the smelting and casting furnace controls the remained molten liquid for immersion and melting when casting ingots every time.

The shut-off injection pump is arranged in the smelting circulation channel via an equipment base 11. The equipment seat is adapted to the shape of the peripheral wall of the rectangular pump body. Namely, an equipment seat 11 is arranged between the smelting circulation channel and the stop type injection pump, and the equipment seat is composed of groove plates fixed on two opposite side walls of the smelting circulation channel.

The shutoff type injection pump is provided with a quick-mounting and dismounting device which comprises a shutoff type injection pump mounting frame 8, a mounting and dismounting guide device, a mounting and dismounting bracket 9 arranged above the shutoff type injection pump mounting frame, a lifting driving device and the like. The lifting driving device is a lifting cylinder 15, the loading and unloading guide device comprises a plurality of limiting guide sleeves 6 fixed on the smelting circulating channel enclosing body, the lower ends of a plurality of guide columns 7 are respectively sleeved into the limiting guide sleeves 6, the upper ends of the guide columns 7 are respectively fixedly connected to the intercepting type injection pump mounting frame, a lifting cylinder 15 cylinder body is fixed on the loading and unloading support, and a lifting cylinder 15 piston rod is connected to the intercepting type injection pump mounting frame. The lifting cylinder is controlled to lift and descend, and the shutoff type injection pump can be lifted and separated from the equipment seat of the smelting circulation channel. An unobstructed flow passage is provided for the molten liquid to be returned by the submerged melting furnace. The injection pump is lifted to be separated from the closed part and away from the higher temperature part of the lower part of the furnace body, so that the service life of the injection pump is relatively prolonged. The lifting cylinder 15 is lowered to the proper position, and the stop injection pump can be mounted back to the equipment seat of the smelting circulation channel.

The method of the regenerative smelting operation mode comprises the steps of heating first-furnace smelting molten liquid stored in a smelting and casting furnace through a molten liquid heater, increasing the temperature of the molten liquid, putting recycled metal raw material materials into an immersion melting furnace through a furnace mouth of the immersion melting furnace, conveying high-temperature molten liquid heated by the smelting and casting furnace to the immersion melting furnace through a smelting circulation channel through a shutoff type injection pump, and carrying out immersion type smelting on the raw material materials in the immersion melting furnace. The melt melted by the immersion melting furnace is directly returned to the smelting and casting furnace through the smelting circulation channel. And outputting the smelted molten liquid from the smelting casting furnace through a casting discharge port to carry out ingot casting.

The shutoff type injection pump comprises a rectangular pump body 22, pump covers 23 respectively connected to the upper end and the lower end of the rectangular pump body, and a column type impeller (or pump rotor) 24 arranged in the inner cavity of the rectangular pump body, wherein the column type impeller is provided with two mutually symmetrical pieces, and the two opposite sides of the rectangular pump body are respectively provided with an inlet 26b and an outlet 26a which have corresponding shapes and/or sizes and correspond to the space 27 between the two column type impeller pieces 25. The space formed between the two cylindrical impeller blades 25 is shaped like an involute (like a sine wave in the axial plane). The mutually opposite side wall surfaces 28 of the two column type impeller blades correspond to the shape of the arc side wall surface of the inner cavity of the rectangular pump body, and the two column type impeller blades are matched with the arc inner wall surface of the rectangular pump body or correspond to a small gap. The height of the rectangular pump body and the column type impeller thereof is adapted to the liquid phase space of the submerged melting furnace and the depth of the melt through opening of the submerged melting furnace, and the width of the rectangular pump body is adapted to the width of the equipment seat, so that the shutoff type injection pump has the function of a corresponding control valve for stopping flow or intercepting flow on the smelting circulation channel.

The driver of the shut-off infusion pump is a servo motor (stepper motor). The control characteristic of the servo motor is utilized to make the cut-off type injection pump always stop to make the inlet and outlet of the cut-off type injection pump in a closed state. The column type impeller driven to operate is controlled by the servo motor to stop at a corresponding fixed position, so that the shutoff type injection pump realizes the function of a control valve in a stop state to implement the closing and/or opening control of the smelting circulation channel. The control valve for immersing the melt spout of the melting furnace is formed by a shutoff type injection pump. It can save the use of control valve and simplify the system structure. The clearance between the columnar impeller and the shell is controlled, the turn-off or the leakage quantity is controlled to be far smaller than the melting speed of the raw materials, the stable melting liquid level and the pressure in the furnace are obtained, and the heat loss brought away by the pressure relief gas is reduced. The shutoff type injection pump is made of graphite material. When the synchronous motor is out of step, the synchronous motor can be controlled to be in a stop position through a turning gear or a coupling. The embodiment, which only has one smelting circulation channel, can obviously reduce heat loss and improve production environment.

The utility model discloses an immersion melting furnace leans on the whole furnace body side of fire door one side, is equipped with heat recovery environment-friendly device, and its heat recovery environment-friendly device collects cover 34, automatic control air door 37 including the lane change, and corresponding automatic control device etc.. The lane-changing collecting hood 34 comprises a top plate connected with the top of the furnace, an inclined diversion collecting plate which is connected with the top plate and extends to the front upper part of the furnace mouth in an inclined way, and approximately fan-shaped side coamings 36 which are arranged at the left and right opposite sides of the submerged melting furnace and the inclined diversion collecting plate, wherein the lower ends of the fan-shaped side coamings 36 can extend to the ground. The lower end of the inclined diversion collecting plate is hinged with a deflection expansion diversion plate 38.

Automatic control device is including connecting in the action cylinder driver 14 of the extension guide plate that shifts, the furnace gate is closed and is pressed touch contact switch 13 to and PLC controller 16, the PLC controller is equipped with timer 17, the automatic control air door is connected in the corresponding output of PLC controller, the driver of action cylinder is connected through the corresponding output of timer and PLC controller, the furnace gate is closed and is pressed touch contact switch and connect in the input of PLC controller.

The operation principle of the heat recovery environment-friendly device is as follows: when the furnace door is opened, a furnace door closing press-contact type contact switch signal arranged at the lower part of the furnace door is transmitted to the PLC controller, the PLC controller simultaneously controls the automatic control air door to be opened and the action air cylinder to extend out according to the input signal, the action air cylinder drives and rotates to turn down the deflection expansion guide plate, the deflection expansion guide plate blocks the front part and the lower part of the whole furnace opening, all flame gas sprayed from the furnace opening is guided and collected to the collection cover, time is delayed for one time by the timer, after surge flame gas just opened from the furnace opening is basically dissipated, the PLC controller controls the action air cylinder to shrink, the deflection expansion guide plate is turned up, the main space of the furnace opening is made, and normal operation places such as feeding and the like are vacated for operators. The flame smoke with weakened strength is collected and recovered by the inclined diversion collecting plate and the like. When the smelting process is finished, the furnace door is controlled to descend to be closed, the furnace door descends to the lower roller thereof to press the press contact type contact switch to be closed, and the PLC controller controls the automatic control air door to stop. Which fundamentally improves the operating environment.

The channel-changing collecting cover 34 has the advantages that the channel-changing collecting cover can automatically adapt to the operation change of the operation process of a smelting furnace system through the position-changing extended guide plate and the automatic control device thereof, the extending change of the collecting channel is expanded to the front lower part of the whole furnace opening, the pressure gas flow mixed with high-temperature flame in the furnace can be effectively prevented from impacting the smelting operation environment place in the stage of just opening the furnace door, and the whole production environment space is filled. Fundamentally improves and improves the recovery effect, and has very obvious environment-friendly effect of waste heat recovery and utilization.

In example 2. The stepping motor is provided with a circular grating or a magnetic induction synchronizer, or a sensor is arranged at a position to be stopped at the same time, and the sensor is connected with a controller of the servo motor, so that even if the stepping motor falls off, a driving signal can be continuously provided for the stepping motor until the stepping motor is controlled to a preset stop position to be moved. Its operation is more reliable. 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 example 3. As shown in fig. 5, the smelting circulation channel is provided with a one-way injection pump, a melt port of the submerged melting furnace is provided with a control valve 20, and an inlet and an outlet of the one-way injection pump 19 are respectively communicated with one end of the submerged melting furnace and one end of the smelting and casting furnace of the smelting circulation channel. The smelting circulating channel is connected in parallel with a bypass return channel 18, and the smelting liquid of the submerged melting furnace is returned to the smelting and casting furnace through the bypass return channel. 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 example 4. The immersion melting furnace and the smelting and casting furnace are arranged on the same horizontal plane. To suit the needs of a particular smelting furnace system process setting. A bidirectional output injection pump is arranged in the smelting circulation channel. The immersion melting furnace and the smelting and casting furnace are mutually conveyed by a bidirectional output injection pump through a smelting circulation channel. The submerged melting furnace is not provided with a control valve, and a bidirectional output injection pump replaces the control valve of a smelting circulation channel by utilizing the small difference of the melt level between the submerged melting furnace and the smelting casting furnace. The rest of the structure and the corresponding operation control manner of this example can be similar to those of embodiment 1 described above.

The utility model discloses its injection pump can be current similar structure pump.

Claims

1. The utility model provides a device is smelted in metal regeneration, includes the submergence melting furnace to and smelt the casting furnace, the submergence melting furnace is through smelting circulation channel and smelting casting furnace UNICOM, and characterized by still includes fast loading and unloading device, fast loading and unloading device includes the injection pump mounting bracket, loading and unloading guider, and locates the loading and unloading support of injection pump mounting bracket top to and lift drive arrangement, loading and unloading guider is connected in the guide post of spacing guide sleeve respectively including a plurality of spacing guide sleeves that are fixed in fixing support, the injection pump mounting bracket is connected in this guide post, lift drive arrangement connects between injection pump mounting bracket and loading and unloading support.