CN210036255U

CN210036255U - Box type high-temperature furnace

Info

Publication number: CN210036255U
Application number: CN201822151290.6U
Authority: CN
Inventors: 阮志伟
Original assignee: Shanghai Muffle Furnace Technology Instrument Co Ltd
Current assignee: Shanghai Muffle Furnace Technology Instrument Co Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-02-07
Anticipated expiration: 2028-12-21

Abstract

The utility model relates to the field of heat treatment, in particular to a box-type high-temperature furnace, wherein a furnace chamber is arranged at the front part of a shell, an inner container is embedded in the furnace chamber, a first heat-insulating plate is spliced and installed in the inner container, the box door is rotationally hinged with the shell, an infrared photoelectric switch is arranged on the shell, a second heat-insulating plate is arranged at the back of the box door, an operation panel is arranged at the bottom of the front side of the shell, a temperature control instrument, an ammeter, an operation button and an alarm are arranged on the operation panel, a fortune horse wheel is installed around the bottom of the shell, a; alternating current contactor, current transformer, silicon controlled rectifier all with controller module electric connection, alternating current contactor is connected with alternating current power supply, and current transformer is connected with the ampere meter, silicon controlled rectifier and heating rod electric connection, and the thermocouple is installed inside furnace to through relay and controller module electric connection, controller module still electric connection have fan, temperature control instrument and alarm.

Description

Box type high-temperature furnace

Technical Field

The utility model relates to a heat treatment field, concretely relates to box-type high temperature furnace.

Background

The temperature of the high temperature furnace is below 1800 ℃, and the high temperature furnace is mainly used for heating raw materials, blanks and mechanical parts in the mechanical industry. Such as blank heating before plate rolling and forging heating. Heat treatment of mechanical parts and semi-finished products to improve their mechanical properties, such as rod quenching, tempering, annealing, normalizing, gas carburizing, nitriding, etc. It is also used for sintering, brazing, and part of electric resistance furnaces for smelting low-melting point metals and heating in the ceramic glass industry.

The existing box-type furnaces are all in periodic operation type, a double-layer shell structure and a 30-section program temperature control system are adopted, phase shift triggering and silicon controlled rectifier control are adopted, a hearth is made of an alumina polycrystalline fiber material, and an air cooling system is arranged between double-layer furnace shells. The furnace of current product adopts monoblock piece to assemble, and furnace takes place the condition of expend with heat and contract with cold at the in-process of intensification cooling and can make whole furnace local emergence fracture, the phenomenon of collapsing, whole furnace's life-span can subtract the weak point like this, the quality of whole stove devalues, it is the produced cost of maintenance thereupon, the cost can promote by a wide margin, and the footing of equipment is the iron foot that the direct welding went up, the weight of a stove is about 200Kg, when moving and inconvenient, in addition still there is the radiating effect poor, there is the problem of potential safety hazard.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a box high temperature furnace mainly solves current high temperature furnace and easily cracks, and the heavy difficult removal of equipment has the problem of potential safety hazard.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a box-type high-temperature furnace is characterized in that: the furnace body device comprises a shell, a box door and an operation panel, wherein a hearth is arranged at the front part of the shell, an inner container is embedded in the hearth, a first heat insulation plate is spliced and arranged in the inner container, a gap is reserved between the first heat insulation plates, a heating rod is arranged on the first heat insulation plates, the box door is rotatably hinged with the shell, an infrared photoelectric switch is arranged on the shell, a second heat insulation plate is arranged on the back surface of the box door, the operation panel is arranged at the bottom of the front side of the shell, a temperature control instrument, an ammeter, an operation button and an alarm are arranged on the operation panel, Fuma wheels are arranged on the periphery of the bottom of the shell, a heat dissipation opening is formed in the top of the shell, and a fan is arranged in; controlling means includes thermocouple, ac contactor, current transformer, silicon controlled rectifier and controller module, ac contactor current transformer the silicon controlled rectifier all with controller module electric connection, ac contactor is connected with alternating current power supply, current transformer with the ampere meter is connected, the silicon controlled rectifier with heating rod electric connection, the thermocouple is installed inside the furnace to through the relay with controller module electric connection, controller module still electric connection have the fan temperature control instrument with the alarm.

Preferably, the operation buttons include a power start button, a power stop key, a power master switch and a running voltage indicator lamp.

Preferably, the alarm is an audible and visual alarm.

Preferably, a 24V power supply is electrically connected to the controller module, and can provide a stable voltage for the relay and the infrared photoelectric switch.

Preferably, the shell is provided with a 2P wiring terminal for connecting with a 220V alternating current power supply.

Preferably, the controllable silicon is provided with a radiating block, and a trigger is electrically connected between the heating rod and the controllable silicon.

Preferably, the control device further comprises a fuse, so that overload can be prevented and equipment can be protected.

(III) advantageous effects

Compared with the prior art, the utility model has the characteristics of it is following:

1. the first heat-insulation plate and the second heat-insulation plate are installed in a splicing mode, a gap is formed between every two heat-insulation plates, a space for expansion with heat and contraction with cold can be provided for materials, the hearth can be in a heating and cooling state, and the phenomena of cracking, breaking and hearth collapse cannot occur;

2. the bottom of the device is provided with the Fuma wheel, the height of the wheel can be adjusted up and down, the wheel is adjusted to be convenient to move, the wheel is changed into a fixed supporting leg after being adjusted, the adjustment is flexible, and the applicability is strong;

3. the heat dissipation opening is formed in the top of the shell, the heat exchange principle of heat rising is met, after the fan is started, wind can blow upwards, the flow of hot wind is accelerated, the hot wind is discharged outwards, the air flow is increased, the air circulation in the whole furnace is accelerated, and the temperature of the shell of the whole furnace body is reduced;

4. the infrared photoelectric switch is arranged, so that the whole control circuit can be cut off when an operator opens the furnace door, and even if the operator forgets to close a power main switch on the operation panel, the operator can safely take the parts, thereby greatly improving the safety performance;

5. the alarm is arranged, when equipment breaks down, the alarm can light and make a sound to remind an operator to check the equipment beside the equipment as soon as possible.

The utility model discloses simple structure, convenient to use, the practical function is outstanding.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of a prior art box furnace configuration;

FIG. 2 is a front view of the box-type high temperature furnace of the present invention;

FIG. 3 is a schematic view of the box type high temperature furnace of the present invention when the door is opened;

FIG. 4 is a schematic structural view of the inside of the hearth of the box-type high-temperature furnace of the present invention;

the reference numerals are as follows:

1. a power supply start button; 2. a power stop key; 3. a fortune wheel; 4. a power supply main switch; 5. An alarm; 6. an operating voltage indicator light; 7. an ammeter; 8. a temperature control instrument; 9. a handle;

a. a first heat-insulating plate; b. a second insulation board; c. a heating rod; d. a heat dissipation port; e. an infrared photoelectric switch;

p1, 2P terminal; p2, AC contactor; p3, heat sink block; p4, thyristor; p5, current transformer; p6, fuses; p7, 24V power supply; p8, flip-flop; p9, relays; p10, fan; p11, inner container; p12, shell; p13, thermocouple.

Detailed Description

In the description of the present invention, "a plurality" means two or more unless otherwise specified. The terms "inner," "upper," "lower," and the like, refer to an orientation or a state relationship based on that shown in the drawings, which is for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. To those of ordinary skill in the art, the specific meaning of the above terms in the present invention is understood according to the specific situation.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein.

A box-type high-temperature furnace as shown in fig. 2 to 4, including furnace body device and controlling means, the furnace body device includes casing p12, chamber door and operating panel, open there is furnace in casing p12 front portion, furnace embeds establishes installs inner bag p11, the inside concatenation of inner bag p11 installs first insulation board a, first insulation board a leaves the gap each other, and install heating rod c, the chamber door rotates with casing p12 and articulates, wherein, be equipped with infrared photoelectric switch e on casing p12, the chamber door back is equipped with second insulation board b, casing p12 front side bottom is equipped with operating panel, be equipped with temperature control instrument 8 on the operating panel, ampere meter 7, operating button and alarm 5, casing p12 bottom is installed futon all around with fortune horse wheel 3, the top is opened with thermovent d, install fan p10 in the thermovent d.

In this embodiment, the first insulation board a and the second insulation board b are both alumina fiber boards, and as shown in fig. 4, when the furnace is installed, the boards are cut into small pieces by an engraving machine, and then stacked, stacked and assembled until the whole furnace is built into a required size. The hearth spliced together only has a small gap for each block, a space for expansion with heat and contraction with cold is provided for the material, the hearth can be in a heated and cooled state, and the phenomena of cracking, breaking and hearth collapse cannot occur.

The Fuma wheel 3 is adopted at the bottom of the device, the height of the wheel can be adjusted up and down, the wheel is adjusted to be convenient to move, the wheel is changed into a fixed supporting leg after being adjusted, the adjustment is flexible, and the applicability is strong; the heat dissipation opening d is opened at the top of casing p12, accords with the heat exchange principle that the heat rises, and fan p10 starts the back, and wind can up blow, makes hot-blast flow of accelerating discharge outward, and the air flow grow, and the inside wind circulation of whole stove accelerates, makes whole furnace body shell temperature reduce.

As shown in fig. 4, the control device includes a thermocouple p13, an ac contactor p2, a current transformer p5, a thyristor p4 and a controller module, the ac contactor p2, the current transformer p5 and the thyristor p4 are all electrically connected with the controller module, the ac contactor p2 is connected with an ac power supply, the current transformer p5 is connected with an ammeter 7, the thyristor p4 is electrically connected with a heating rod c, the thermocouple p13 is installed inside the furnace and is electrically connected with the controller module through a relay p9, and the controller module is further electrically connected with a fan p10, a temperature control instrument 8 and an alarm 5.

In this embodiment, be equipped with 2P binding post P1 on casing P12, be used for being connected with 220V alternating current power supply, electric connection has 24V power P7 on the controller module, can provide steady voltage to relay P9 and infrared photoelectric switch e, be equipped with radiating block P3 on the silicon controlled rectifier P4, still electric connection has trigger P8 between heating rod c and the silicon controlled rectifier P4, still include fuse P6 among the controlling means, can prevent to transship, protective apparatus, operating button includes power start button 1, power stop key 2, power master switch 4 and operating voltage pilot lamp 6, alarm 5 is audible-visual annunciator.

When using, owing to set up infrared photoelectric switch e, consequently when the operator opens the furnace gate, can cut off whole control circuit, even the operator forgets to close power master switch 4 on the operating panel like this, also can get the piece safely, promoted the security performance greatly, set up alarm 5 in addition, when equipment breaks down, alarm 5 can light and sound, reminds the operator to arrive the other check out test set of equipment as early as possible.

It is worth mentioning that the heating principle of the furnace in the device is the same as that of the temperature control device in the prior art, namely, the heating rod c can automatically switch on or off the heat source energy supplied to the furnace or continuously change the heat source energy according to the deviation of the furnace temperature and the given temperature under the control action of the control module, so that the furnace temperature is stably in the given temperature range to meet the requirements of the heat treatment process, therefore, the temperature control principle belongs to feedback regulation and can realize the control action through PID; the current display and the specific connection and use of electronic elements such as an alternating current contactor, a trigger and the like are the same as those of the existing high-temperature furnace.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A box-type high-temperature furnace is characterized in that: including furnace body device and controlling means, furnace body device includes casing (p12), chamber door and operating panel, casing (p12) front portion is opened there is furnace, the furnace is embedded to be established and is installed inner bag (p11), first insulation board (a) is installed in the inside concatenation of inner bag (p11), first insulation board (a) leave the gap each other to install heating rod (c), the chamber door with casing (p12) rotate articulated, wherein, be equipped with infrared photoelectric switch (e) on casing (p12), the chamber door back is equipped with second insulation board (b), casing (p12) front side bottom is equipped with operating panel, the last temperature control instrument (8), ampere meter (7), operating button and alarm (5) of being equipped with of operating panel, casing (p12) bottom is installed horse wheel (3) all around, and the top is opened has thermovent (d), a fan (p10) is arranged in the heat dissipation opening (d); controlling means includes thermocouple (p13), ac contactor (p2), current transformer (p5), silicon controlled rectifier (p4) and controller module, ac contactor (p2) current transformer (p5) silicon controlled rectifier (p4) all with controller module electric connection, ac contactor (p2) is connected with alternating current power supply, current transformer (p5) with ampere meter (7) are connected, silicon controlled rectifier (p4) with heating rod (c) electric connection, thermocouple (p13) install inside the furnace to through relay (p9) with controller module electric connection, controller module still electric connection have fan (p10), temperature control instrument (8) and alarm (5).

2. A box-type high-temperature furnace according to claim 1, characterized in that: the operation buttons comprise a power supply starting button (1), a power supply stopping key (2), a power supply main switch (4) and an operating voltage indicator lamp (6).

3. A box-type high-temperature furnace according to claim 1, characterized in that: the alarm (5) is an audible and visual alarm.

4. A box-type high-temperature furnace according to claim 1, characterized in that: the controller module is electrically connected with a 24V power supply (p7) and can provide stable voltage for the relay (p9) and the infrared photoelectric switch (e).

5. A box-type high-temperature furnace according to claim 1, characterized in that: and the shell (P12) is provided with a 2P wiring terminal (P1) for connecting with a 220V alternating current power supply.

6. A box-type high-temperature furnace according to claim 1, characterized in that: the controllable silicon (p4) is provided with a heat dissipation block (p3), and a trigger (p8) is electrically connected between the heating rod (c) and the controllable silicon (p 4).

7. A box-type high-temperature furnace according to claim 1, characterized in that: the control device also comprises a fuse (p6) which can prevent overload and protect equipment.