CN2737804Y - Improved round well type blackening furnace - Google Patents

Abstract

The utility model relates to an improved round well type blackening furnace, which is composed of a furnace, a pipeline and an electric control part, wherein the furnace is in round well type structure and is mainly composed of a furnace body and a furnace cover. Three groups of flat large power electrical heating rows which are arranged at the upper, the middle, and the lower positions in the furnace body and can be heated rapidly. Each electrical heating row has four layers and presents a sine wave shape. The outside of a furnace chamber is provided with a circular stainless steel tube which is led to the inside of the furnace chamber and can transfer steam to the inside of the furnace chamber. The inside, the outside, the upper, the middle, and lower parts of the furnace body are provided with a plurality of small holes used for installing thermocouples. The furnace cover is movably arranged at the top of the furnace body. The upper, the middle and the lower electrical heating rows are respectively connected with a controllable silicon power regulator. When the three controllable silicon power regulators and the electrical heating rows are powered on, the three controllable silicon power regulators are respectively connected with a temperature control accommodometer which is communicated with the upper, the middle and the lower thermocouples in the furnace so as to control the heating temperature of the electrical heating rows. The three temperature control accommodometers are connected with a composite temperature recorder which is communicated with the upper, the middle, and the lower electric thermocouples in the furnace chamber. The adoption of the blackening furnace of the utility model realizes electric control automation, increases blackening ability, and reduces production cost.

Description

Modified version circular well formula melanism stove

Technical field

The utility model relates to iron and steel melanism treatment facility, particularly a kind of modified version circular well formula melanism stove that is used for the colorful visualization pipe manufacturer.

Background technology

Circular well formula melanism stove is to be used for iron and steel metal partss such as the framework in the colour picture tube, inner shield are carried out the specific equipment that melanism is handled.The quality quality of melanism furnace apparatus, the effect of control how automatically, with directly having influence on the quality of framework, inner shield metal material surface melanism film, the colour picture tube quality product had material impact.

Though carrying out surperficial melanism to iron and steel metal partss such as the framework in the colour picture tube, inner shields, handles by the circular well formula melanism stove of existing import, but its automatic controlled function is relatively poor, effect is not ideal, be subjected to the restriction of its throughput again, acquisition expenses is also higher, has influenced the production in enormous quantities of colour picture tube.

Summary of the invention

In order to improve the throughput of colour picture tube, reduce production costs, realize the electrical control automatization, task of the present utility model provides a kind of modified version circular well formula melanism stove, and it has solved, and the automatic controlled function of existing import circular well formula melanism stove is relatively poor, restriction colour picture tube throughput and equipment purchasing expense problem of higher.

The technical solution of the utility model is as follows:

A kind of modified version circular well formula melanism stove, it is grouped into by stove, pipeline and electrical control division, stove is circular well type structured, mainly form by body of heater and bell, the three groups of high-power flat electrically heated rows of upper, middle and lower that are rapidly heated are housed in the described body of heater, and every group of electrically heated row is four layers, and bending is sine wave shape, be equipped with in the flue outside lead to can lead to steam inwards in the flue dish to stainless steel tube, offer several apertures so that thermopair to be installed in the inside and outside upper, middle and lower of body of heater; Described bell is installed in the body of heater top versatilely, and agitator motor and convection current fan blade are housed on the bell, and chilled water unit is settled in the contact site of agitator motor and bell, and the bell side is equipped with lifting motor;

Described upper, middle and lower high-power flat electrically heated row be connected with silicon controlled rectifier electric power regulator respectively, three silicon controlled rectifier electric power regulators and electrically heated row connect power supply, this power supply makes 3 φ AC380V primary voltages become 3 φ AC200V heater voltages through high-power three-phase transformer, three silicon controlled rectifier electric power regulators are connected to control electrically heated row's Heating temperature with the temperature regulating and controlling instrument of upper, middle and lower thermopair in the connection stove respectively, three temperature regulating and controlling instrument connect one and the interior anastomosing hybrid moisture recorder of upper, middle and lower thermopair of furnace chamber again, and the interior upper, middle and lower thermopair of upper, middle and lower thermopair and furnace chamber all is connected to hybrid moisture recorder to print six temperature curves as supervision in the stove.

Melanism furnace apparatus of the present utility model is warmed up to about 350 ℃ when working, then needs being carried out the iron and steel metal parts that cleans up that melanism handles is placed in the melanism stove, build bell and injecting steam in body of heater, continue to be warming up to about 580 ℃, be incubated 10 minutes, can produce the oxide film of one deck black at piece surface, this melanism film quality is better.

Adopt modified version circular well formula melanism stove of the present utility model, realized the electrical control automatization, improved iron and steel metal partss such as the framework in the colour picture tube, inner shield have been carried out the ability that surperficial melanism is handled, improved the throughput of colour picture tube simultaneously, reduced production cost, it is very easy that operator regulate control.

The manufacturing expense of modified version circular well formula melanism stove of the present utility model only for 2/5 of import melanism stove, has been saved a large amount of import equipments and has been purchased fund, and stove performance and automatic control effect surpass import equipment.

Description of drawings

Fig. 1 is the structural representation of a kind of modified version circular well formula melanism stove of the present utility model.

Fig. 2 is the electrical control cabinet schematic appearance of Fig. 1 melanism stove.

Fig. 3 is the electrically heated control circuit figure of Fig. 1 melanism stove.

Embodiment

Referring to Fig. 1 to Fig. 3, a kind of modified version circular well formula melanism stove of the present utility model is grouped into by stove 1, pipeline and electrical control division.Electric control system comprises electrical control cabinet 2 and electrically heated control circuit, adopts the high temperature mode that iron and steel metal partss such as the framework in the colour picture tube, inner shield are carried out surperficial melanism and handles

As shown in Figure 1, stove 1 is circular well type structured, mainly is made up of body of heater 11 and bell 12.Body of heater 11 and bell 12 are made by the heat-resistance stainless steel material.In conjunction with referring to Fig. 3, three groups of high-power flat electrically heated rows 13,14,15 of upper, middle and lower are housed in the body of heater 11, number in the figure 13 is arranged in the electrically heated, and 14 is to arrange in the electrically heated, and 15 is electrically heated row down.Every group of electrically heated row is four layers, and bending is sine wave shape.Setting can make stove be rapidly heated like this.To stainless steel tube, stainless steel tube leads in the flue so that logical inwards steam in the outside subpanel of flue.Offer six apertures in the inside and outside upper, middle and lower of body of heater 11,, control automatically so that carry out temperature in order to thermocouple measuring temperature to be installed.

Bell 12 is installed in body of heater 11 tops versatilely.Agitator motor 16 and convection current fan blade are housed on the bell 12, and agitator motor 16 is settled chilled water unit with the contact site of bell 12.Bell 12 sides are equipped with lifting motor 17.Make bell 12 have the function of oscilaltion and left-right rotation thus, be easy to pack into and take out product.Agitator motor 16 and convection current fan blade are installed on the bell 12, can be made the temperature in the whole stove more even.After bell covered tight starting outfit, agitator motor drives the fan blade high speed rotating made the high temperature air in the stove produce convection current, reaches the uniform purpose of temperature in the stove.Because temperature is up to 580 ℃ in the stove, the contact site of agitator motor and bell must pass to water coolant and be cooled off, so that the temperature of agitator motor is unlikely to too high, otherwise will burn motor coil and the component such as bearing that damage mechanical part.

As shown in Figure 2, the electric control system of this melanism stove has electrical control cabinet 2, settles and provide power supply, the temperature regulating and controlling instrument and the hybrid moisture recorder when stove heats of power supply, agitator motor and the furnace cover lifting motor of stove heating usefulness.

In the melanism stove electrically heated control circuit figure of Fig. 3, needs according to three groups of electric heaters of stove upper, middle and lower, adopt three groups independently temperature regulating and controlling instrument and silicon controlled rectifier electric power regulator control, and adopt programmable controller, coordinate the normal operation of operating device.

As shown in Figure 3, upper, middle and lower high-power flat electrically heated row 13,14,15 be connected with silicon controlled rectifier electric power regulator 21,22,23 respectively, three silicon controlled rectifier electric power regulators 21,22,23 and electrically heated row 13,14,15 connect power supplys, this power supply makes 3 φ AC380V primary voltages become 3 φ AC200V heater voltages through high-power three-phase transformer 24, and power is 230KAV.Three groups of electric heaters are that the high-power flat electrically heated row 13,14,15 of upper, middle and lower adopts star-star-delta connection Y-Y-.

Three silicon controlled rectifier electric power regulators 21,22,23 are connected with digital temperature regulating and controlling instrument 25,26,27 respectively, and temperature regulating and controlling instrument 25,26,27 is connected upper, middle and lower thermopair 28,29,30 in the stove respectively, in order to control electrically heated row's Heating temperature.Three temperature regulating and controlling instrument 25,26,27 connect a hybrid moisture recorder 31 again, and this hybrid moisture recorder 31 is connected with the interior upper, middle and lower thermopair 28,29,30 of furnace chamber.

For example the electronic devices and components function around the silicon controlled rectifier electric power regulator 21 is: system selector switch SA1 and relay K A5-1 contact are controlled the on off state of silicon controlled rectifier electric power regulator jointly, ten grades of scales 10%～100% are arranged on the potentiometer 1K, the maximum output of expression silicon controlled rectifier electric power regulator can be adjusted between 10%～100%, the guard signal of output such as contact 1A, 1C silicon controlled rectifier electric power regulator.

Three thermopairs of upper, middle and lower 28,29,30 are exported corresponding electric current to digital temperature regulating and controlling instrument 25,26,27 according to detected temperature difference in the stove, and the electric current of the high output of temperature is big, and the electric current of the low then output of temperature is little.Temperature regulating and controlling instrument is according to the size of thermopair electric current, and the data such as intensification slope that are provided with in advance according to instrument are controlled silicon controlled rectifier electric power regulator 21,22,23 again.If the thermopair electric current is big, temperature height in the stove is described, the interior resistive of silicon controlled rectifier electric power regulator is big, make and output to respective electrical and add voltage decreases on the hot type, and the speed that the stove corresponding site is heated up is slack-off, otherwise make speeding up of intensification, reach the purpose that stove upper, middle and lower three parts heat up synchronously.

For example the electronic devices and components function around the digital temperature adjusting apparatus 25 is: the switch working state of relay K A4-1 control instruments, relay K A9 finishes the back at a stove product and starts guard signal prompting operator.

The interior upper, middle and lower thermopair 28,29,30 of upper, middle and lower thermopair 28,29,30 and furnace chamber all is connected to hybrid moisture recorder 31 in the stove, printing six temperature curves uses as monitoring, reached and realized essentially identical temperature control curve effect, made that the melanism film quality after the product melanism is better.

On the pipeline of this melanism stove measuring instrument is housed, the circuit water alarm proofing unit of cutting steam also is housed.The supply that pipeline can satisfy the steam and the water coolant of stove ordinary production is set, and can makes metering, also have the measuring ability of the circuit water alarm of cutting steam, to prevent the safety of scrapping and guarantee equipment of melanism product.

In addition, the lead system of drawing that contacts with the stove electric heater adopts anti-200 ℃ high temperature resistant wire, and all the other adopt anti-105 ℃ high temperature resistant wire, have guaranteed the safe operation of stove.

Claims (4)

1. modified version circular well formula melanism stove, it is grouped into by stove, pipeline and electrical control division, stove is circular well type structured, mainly form, it is characterized in that, the three groups of high-power flat electrically heated rows of upper, middle and lower that are rapidly heated are housed in the described body of heater by body of heater and bell, every group of electrically heated row is four layers, and bending is sine wave shape, be equipped with in the flue outside lead to can lead to steam inwards in the flue dish to stainless steel tube, offer several apertures so that thermopair to be installed in the inside and outside upper, middle and lower of body of heater; Described bell is installed in the body of heater top versatilely, and agitator motor and convection current fan blade are housed on the bell, and chilled water unit is settled in the contact site of agitator motor and bell, and the bell side is equipped with lifting motor;

Described upper, middle and lower high-power flat electrically heated row be connected with silicon controlled rectifier electric power regulator respectively, three silicon controlled rectifier electric power regulators and electrically heated row connect power supply, this power supply makes 3 φ AC380V primary voltages become 3 φ AC200V heater voltages through high-power three-phase transformer, three silicon controlled rectifier electric power regulators are connected to control electrically heated row's Heating temperature with the temperature regulating and controlling instrument of upper, middle and lower thermopair in the connection stove respectively, three temperature regulating and controlling instrument connect one and the interior anastomosing hybrid moisture recorder of upper, middle and lower thermopair of furnace chamber again, and the interior upper, middle and lower thermopair of upper, middle and lower thermopair and furnace chamber all is connected to hybrid moisture recorder to print six temperature curves as supervision in the stove.

2. modified version circular well formula melanism stove according to claim 1 is characterized in that described body of heater and bell are made by the heat-resistance stainless steel material.

3. modified version circular well formula melanism stove according to claim 1 is characterized in that, on the described pipeline measuring instrument is housed.

4. modified version circular well formula melanism stove according to claim 1 is characterized in that, the circuit water alarm proofing unit of cutting steam is housed on the described pipeline.

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