CN201432078Y

CN201432078Y - Microwave dewaxing furnace

Info

Publication number: CN201432078Y
Application number: CN2009200897562U
Authority: CN
Inventors: 陈新林
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-15
Filing date: 2009-04-15
Publication date: 2010-03-31
Anticipated expiration: 2019-04-15

Abstract

The utility model discloses hot investment precision casting production equipment, and in particular relates to a microwave dewaxing furnace used for hot investment demoulding operating sequence. A furnace door structure of the microwave dewaxing furnace is movably arranged in front of a firebox (26) at the inner upper end of a furnace body (25), a dewaxing mechanism is arranged in the firebox (26), and an interlocking control mechanism is arranged on the firebox (26); an electronic control mechanism is arranged at the right upper part of the furnace body (25), and a gas storage bag (12) witha pressure relay (11) mounted at the upper end is arranged at the right inner lower part of the furnace body (25); and a microwave shielding conical connector (27) is arranged at the lower part of a steam discharge pipe (22) and is communicated with the firebox (26). By utilizing electromagnetic wave generated in a magnetron and conducted in nonmetal, molecules are enabled to be alternately rearranged to generate heat energy, so as to quickly heat a ceramic shuttering in the firebox, the problem of cracking of the shuttering due to expansion by adopting other dewaxing methods is solved, the heating of objects other than the shuttering is not required, the energy utilization rate is high, the discharge of great amount of tail gas can be eliminated, thereby being energy saving and environmental friendly.

Description

The microwave dewaxing furnace

Technical field:

The utility model relates to a kind of precision-investment casting production equipment, specifically is to be applied to fusible pattern to remove the microwave dewaxing furnace that operation is used.

Background technology:

All adopt the wax-pattern in the high pressure 0.8Mpa vapor removal shell during present domestic model casting is produced, vapour source is oil burning boiler or boilers heated electrically, and steam has taken off emptying behind the wax.For formwork does not ftracture when dewaxing, can work just need earlier the dewaxing still to be preheating to 150 ℃ usually, must consume big energy like this.And behind the dewaxing temperature in the kettle very high formwork of packing into as do not boost to fast 0.4Mpa when above formwork can ftracture because of the intensification expansion of wax-pattern, influence casting quality.Usually reach 0.4Mpa in 14 seconds after the technological requirement formwork is packed into, close the still door in the middle of this, open steam valve, fill three processes of vapour pressurization, the time is very compact.Thereby spalling formwork phenomenon also all often takes place in a lot of factories.Steam has produced a large amount of condensed waters in the heating formwork in the dewaxing still, these water are sneaked in the wax liquid.In order to remove these water, also need in removing bucket, the high temperature strand mix more than ten hour, just can reach the reuse requirement, thereby consumed a large amount of electric energy again.The discharge of the discharge of body waste gas and thermal source boiler waste gas all can cause atmosphere pollution.

The utility model content:

The utility model has solved original steam dewaxing and has easily produced and split problems such as shell, wax liquid water content are big, provides a kind of capacity usage ratio height, the microwave dewaxing furnace of energy-conserving and environment-protective.The front of its door structure head burner hearth 26 of upper end in body of heater 25, dewaxing mechanism is arranged in the burner hearth 26, interlocked control mechanism is arranged on the burner hearth 26, electronic control mechanism is arranged on body of heater 25 upper right quarters, pressure switch 11 is equipped with in air storage bag 12 upper ends, and device is the bottom in body of heater 25 right sides, and the conical interface 27 of shield microwaves is arranged on gland steam exhauster 22 bottoms, and communicates with burner hearth 26.Because utility model is positioned over formwork in the airtight metal burner hearth, utilize magnetron to generate electromagnetic waves and conduction in nonmetal, and molecule is alternately reset and generation heat energy, thereby with the ceramic shell mould temperature Fast Heating in the burner hearth, inner wax-pattern fusing is discharged, reach the dewaxing purpose.The experiment proved that microwave dewaxing furnace bore temperature is low, the formwork of packing into does not have cracking phenomena.Heating using microwave speed soon, does not almost have steam condensate (SC), has solved steam dewaxing and has easily produced the problems such as shell, wax liquid water content are big of splitting.The used power consumption of formwork that removes same quantity is saved more than 60% than the electric-heating steam dewaxing, reduces expenses more than 70% than the fuel-steam dewaxing, does not need the heating of the thing beyond the formwork, the capacity usage ratio height, need not discharge a large amount of tail gas, not have any pollution, energy-conserving and environment-protective.

Description of drawings:

Fig. 1 be main cutaway view of the present utility model,

Fig. 2 be Fig. 1 the cutaway view of bowing,

Fig. 3 is the side view of Fig. 1

The specific embodiment:

As Fig. 1, Fig. 2, shown in Figure 3, the front of door structure head burner hearth 26 of upper end in body of heater 25, dewaxing mechanism is arranged in the burner hearth 26, interlocked control mechanism is arranged on the burner hearth 26, electronic control mechanism is arranged on body of heater 25 upper right quarters, and pressure switch 11 is equipped with in air storage bag 12 upper ends, and device bottom in body of heater 25 right sides, the conical interface 27 of shield microwaves is arranged on gland steam exhauster 22 bottoms, and communicates with burner hearth 26.

As Fig. 1, Fig. 2, shown in Figure 3, the blocking lever 20 of interlocked control mechanism is a hook, and its head hold down gag and is connected with magnetron 8 that is arranged on burner hearth 26 right sides and waveguide 9 on the microswitch on the support 17 18.

As Fig. 1, Fig. 2, shown in Figure 3, the storage wax pan 3 of dewaxing mechanism is a sandwich, weld with aluminium sheet, its wall and burner hearth 26 are integrally welded, the space adds conduction oil 4 and electrothermal tube in its interlayer, and magnetic valve 10, ball valve 5 and 6 tops, strength storehouse are connected, and wax conveying tube 7 is connected strength storehouse 6 lower-left ends, formwork 1 is placed on the dewaxing car 2, and is movably placed in the burner hearth 26.

As Fig. 1, Fig. 2, shown in Figure 3, electronic control mechanism is that digital display or pointer power meter 19 are housed on body of heater 25 panels, and control panel 24 is arranged on body of heater 25 leading flank upper right sides, and indicator lamp 23 is arranged on body of heater 25 upper left corners.

As Fig. 1, Fig. 2, shown in Figure 3, door structure is flexibly connected with body of heater 25 by spring 15 and the bearing pin 16 of device on door hinge 14 by fire door 13, and handle 21 is arranged on fire door 13 1 sides.

Claims

1 one kinds of microwave dewaxing furnaces, it comprises the front of door structure head burner hearth (26) of upper end in body of heater (25), the mechanism that it is characterized in that dewaxing is arranged in the burner hearth (26), interlocked control mechanism is arranged on the burner hearth (26), electronic control mechanism is arranged on body of heater (25) upper right quarter, and pressure switch (11) is equipped with in air storage bag (12) upper end, and device bottom in body of heater (25) is right, the conical interface of shield microwaves (27) is arranged on gland steam exhauster (22) bottom, and and burner hearth (26) communicate.

2, microwave dewaxing furnace according to claim 1, the blocking lever (20) that it is characterized in that interlocked control mechanism is a hook, its head hold down gag and is connected with magnetron (8) that is arranged on burner hearth (26) right side and waveguide (9) on the microswitch (18) on the support (17).

3, microwave dewaxing furnace according to claim 1, the storage wax pan (3) of mechanism of it is characterized in that dewaxing is sandwich, weld with aluminium sheet, its wall and burner hearth (26) are integrally welded, the space adds conduction oil (4) and electrothermal tube in its interlayer, and magnetic valve (10), ball valve (5) and top, strength storehouse (6) are connected, and wax conveying tube (7) is connected lower-left, strength storehouse (6) end, formwork (1) is placed on the dewaxing car (2), and is movably placed in the burner hearth (26).

4, microwave dewaxing furnace according to claim 1, it is characterized in that electronic control mechanism is that digital display or pointer power meter (19) are housed on body of heater (25) panel, control panel (24) is arranged on body of heater (25) leading flank upper right side, and indicator lamp (23) is arranged on body of heater (25) upper left corner.

5, microwave dewaxing furnace according to claim 1 is characterized in that door structure is flexibly connected with body of heater (25) by spring (15) and the bearing pin (16) of device on door hinge (14) by fire door (13), and handle (21) is arranged on fire door (13) one sides.