CN201967164U - Heating device of electrochemical-cleaning salt bath furnace - Google Patents

Abstract

The utility model relates to a heating device, in particular to a heating device of an electrochemical-cleaning salt bath furnace in a casting industry. The heating device comprises a housing and a heating core, wherein the upper end of the housing is open and the lower end of the housing is closed; the heating core comprises a ceramic support, a resistance belt and two electrode binding posts; the ceramic support extends into the housing and covers an opening at the upper end of the housing; the resistance belt is mounted on the ceramic support; two upper ends of the resistance belt are exposed out of the housing; and the two electrode binding posts are respectively welded with the two upper ends of the resistance belt. When in use, the device is directly placed in non-oxidative molten salt in a tank body of the salt bath furnace. After the technical scheme is adopted, the resistance belt of the heating core produces heat in the housing, and the heat is diffused into the non-oxidative molten salt outside the device through the housing, so as to heat the non-oxidative molten salt and enable the tank body of the salt bath furnace to be heated evenly. As the device is directly placed in the non-oxidative molten salt in the tank body of the salt bath furnace, and an internal heating manner is adopted, so that the device has the advantages that the heating speed is high, the heat efficiency is high, the tank body of the salt bath furnace is heated evenly, is corroded slowly and has a long service life, the cleaning efficiency of the electrochemical-cleaning salt bath furnace is high, and the cleaning cost is low.

Description

Electrochemistry cleaning salt bath furnace heater

Technical field

The utility model relates to a kind of heater, particularly a kind of electrochemistry cleaning salt bath furnace heater of casting industry.

Background technology

Electrochemistry cleaning is called " Kolene " abroad to be handled, and is used to clear up the cast iron and the steel-casting of the complicated and demanding hydraulic part of inner surface cleannes of inner-cavity structure, gas turbine housing, crankcase, model casting, also can be used for the surface treatment of steel.Workpiece except that inner chamber is not had scab and the oxide skin, also can improve about three times after carrying out the electrochemistry cleaning useful life of golden cutting knife tool, simultaneously, also can improve the surperficial corrosion resistance of workpiece, eliminates internal stress.The key equipment of electrochemistry cleaning is called salt bath furnace, its operation principle is as follows: the non-oxidizable fused salt that the workpiece of preheating is placed the interior fusion of salt bath furnace cell body (being also referred to as crucible) together with the workpiece basket, and the electrode in workpiece basket and the salt bath furnace cell body joined with the two poles of the earth of power supply respectively, connect direct current, at a certain temperature, chemolysis effect by cathodic reduction, anodic oxidation and fused salt reacts away the scab of workpiece, the iron in the oxide skin is reduced, surperficial graphite is oxidized removes.Now, electrochemistry cleaning salt bath furnace all adopts external mode of heating when the non-oxidizable fused salt of heating, usually electricity consumption or combustion gas are to lateral surface, the outer bottom heating of salt bath furnace cell body, conduct heat by cell body again, with the non-oxidizable fused salt in the heat transferred cell body, making its heat fused and reach certain working temperature, is single clearing zone in the salt bath furnace cell body.This heating arrangement has the defective that firing rate is slow, the heat efficiency is low, thus the salt bath furnace cell body be heated inequality, corrosion is fast, the life-span short, makes that the cleaning efficiency of electrochemistry cleaning salt bath furnace is lower, disposal costs are higher.

The utility model content

Technical problem to be solved in the utility model provides a kind of electrochemistry cleaning salt bath furnace heater, this device has the advantage that firing rate is fast, the heat efficiency is high, so that the salt bath furnace cell body is heated evenly, corrodes slowly, the life-span is long, makes that the cleaning efficiency of electrochemistry cleaning salt bath furnace is higher, disposal costs are lower.

For solving the problems of the technologies described above, the utility model provides a kind of electrochemistry cleaning salt bath furnace heater, it comprises upper end uncovered and housing, the heating core of lower end closed, heating core comprise put in the housing and with the ceramics bracket of the housing uncovered covering in upper end, be contained on the ceramics bracket and two upper ends expose two electrodes that two upper ends of resistive band outside housing and resistive band weld respectively and connect post.

For can concise description for the purpose of the problem, below electrochemistry cleaning salt bath furnace heater described in the utility model be all abbreviated as this device.

During use, this device is directly placed non-oxidizable fused salt in the salt bath furnace cell body.

After adopting above technical scheme, the heat production in housing of the resistive band of heating core, is heated non-oxidizable fused salt in the non-oxidizable fused salt of heat diffusion to this device also by housing, makes it be heated evenly.Owing to the non-oxidizable fused salt that this device is directly placed in the salt bath furnace cell body, be built-in mode of heating, therefore, this device has the advantage that firing rate is fast, the heat efficiency is high, so that the salt bath furnace cell body is heated evenly, corrodes slowly, the life-span is long, makes that the cleaning efficiency of electrochemistry cleaning salt bath furnace is higher, disposal costs are lower.

In addition, according to the weight of non-oxidizable fused salt and the temperature of desiring to reach, can select to adopt single or multiple devices that non-oxidizable fused salt is heated.

When using this device that non-oxidizable fused salt is heated, for adapting with this device, the structure of salt bath furnace cell body can be done following adjustment: by existing single clearing zone, be adjusted into the thermal treatment zone, stirring area and three districts of clearing zone of communicating, this device is placed in the thermal treatment zone, by the stirring propeller in the stirring area, to heat in the non-oxidizable fused salt suction thermal treatment zone in the clearing zone, simultaneously the non-oxidizable fused salt that obtains in the thermal treatment zone heating is delivered in the clearing zone, so constantly circulation, make and non-oxidizable fused salt fusion get fused solution.

The cross sectional shape of described housing is circular;

Ceramics bracket comprises the round ceramic sheet that some horizontal intervals are from top to bottom arranged, be arranged on the cylindrical ceramic piece between per two adjacent ceramic sheets, fastening bolt, clamp nut, the radial dimension of potsherd is greater than the radial dimension of ceramic block, potsherd, the center of ceramic block all has first perforation vertically, the outer rim place of each potsherd all has symmetric arrangement and position vertically and is in two second perforation outside the ceramic block, the lower end edge of that ceramic block topmost radially have one with this ceramic block on the 3rd perforation that is isolated of first perforation, there are two support ears of extensions downwards the downside central area of that potsherd bottom;

That potsherd load is topmost put in the upper end of housing and with the uncovered covering in the upper end of housing, that potsherd bottom is landed on the bottom plate of housing by two support ears, resistive band second is installed on the ceramics bracket through second perforation of a side, the 3rd perforation, opposite side, after fastening bolt passes the first all perforation from bottom to up, clamp nut spins with fastening bolt and contacts with topmost that potsherd, makes described potsherd, ceramic block from top to down arranged stacked.

Like this, this device also has simple in structure, safe and reliable advantage.

The material of described housing is a stainless steel.

Like this, durable in use, the long service life of this device.

Description of drawings

Fig. 1 is the structural representation of this device;

Fig. 2 is the user mode vertical view of this device.

Embodiment

Below by execution mode and accompanying drawing thereof the utility model is described in further detail:

Referring to Fig. 1: this device comprises upper end uncovered and housing 1, the heating core of lower end closed.Heating core comprise put in the housing 1 and with the ceramics bracket 2 of the housing uncovered covering in 1 upper end, be contained on the ceramics bracket 2 and two upper ends expose two electrodes that two upper ends of resistive band 3 outside housing 1 and resistive band 3 weld respectively and connect post 4.The cross sectional shape of housing 1 is circular; The material of housing 1 is a stainless steel.

Ceramics bracket 2 comprises six round ceramic sheets 21 of horizontal interval layout from top to bottom, be arranged on the cylindrical ceramic piece 22 between per two adjacent ceramic sheets 21, fastening bolt 23, clamp nut 24, the radial dimension of potsherd 21 is greater than the radial dimension of ceramic block 22, potsherd 21, the center of ceramic block 22 all has first perforation 25 vertically, the outer rim place of each potsherd 21 all has vertically and is symmetrically arranged and the position is in outside the ceramic block 22 two second perforation 26, the lower end edge of that ceramic block 22 topmost radially have one with this ceramic block 22 on the 3rd perforation 27 that is isolated of first perforation 25, there are two support ears 28 of extensions downwards the downside central area of that potsherd 21 bottom.

Those potsherd 21 loads are topmost put in the upper end of housing 1 and with the uncovered covering in the upper end of housing 1, that potsherd 21 bottom is landed on the bottom plate of housing 1 by two support ears 28, resistive band 3 is installed on the ceramics bracket 2 through second perforation the 26, the 3rd perforation 27 in left side, second perforation 26 on right side, after fastening bolt 23 passes the first all perforation 25 from bottom to up, clamp nut 24 spins with fastening bolt 23 and contacts with topmost that potsherd 21, makes described potsherd 21, ceramic block 22 from top to down arranged stacked.

Referring to Fig. 2: when using this device that non-oxidizable fused salt is heated, for adapting with this device, the structure of salt bath furnace cell body can be done following adjustment: by existing single clearing zone, be adjusted into thermal treatment zone A, stirring area B and three districts of clearing zone C of communicating, place nine this device D among the A of the thermal treatment zone, be provided with among the stirring area B and stir propeller 5, be provided with two battery lead plates 6 among the C of service area.By the stirring propeller 5 among the stirring area B, non-oxidizable fused salt among the clearing zone C is sucked heating (not shown described non-oxidizable fused salt in the accompanying drawing) among the A of the thermal treatment zone, simultaneously the non-oxidizable fused salt that obtains heating among the A of the thermal treatment zone is delivered among the clearing zone C, so constantly circulation, make and non-oxidizable fused salt fusion get fused solution.By stirring propeller 5, fused solution is sent between two battery lead plates 6, the workpiece basket 7 that workpiece will be housed is again inserted in two fused solutions between the battery lead plate 6, the two poles of the earth of DC power supply 8 link to each other with a battery lead plate 6 with workpiece basket 7 respectively, connect direct current, after 30-60 minute, can finish the cleaning work of workpiece.

Compare with existing external mode of heating, this device is built-in mode of heating, homogeneous heating.Result of the test shows: the heat efficiency of this device improves 20-25%, clears up hydraulic pressure foundry goods per ton 20 degree that can economize on electricity, and it is about 5% that the consumption of non-oxidizable fused salt reduces, and little to the corrosion of salt bath furnace cell body, effectively prolong the useful life of salt bath furnace cell body.With cleaning hydraulic pressure foundry goods is example, calculates by annual cleaning hydraulic pressure foundry goods 3000t, and 60000 degree that can economize on electricity every year are saved non-oxidizable fused salt 4500t, economize on to make the about 30t of steel of salt bath furnace cell body, remarkable in economical benefits.

Above-described only is preferred implementation of the present utility model.Should be understood that, for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, such as: the perforation of second on the potsherd also can be added to be provided with, and makes the layout of resistive band help heating more; The following downside central area of that potsherd bottom can be provided with an annular or a square integrated support ear, and these also should be considered as belonging to protection range of the present utility model.

Claims (3)

1. electrochemistry is cleared up the salt bath furnace heater, it is characterized in that: it comprises upper end uncovered and housing, the heating core of lower end closed, heating core comprise put in the housing and with the ceramics bracket of the housing uncovered covering in upper end, be contained on the ceramics bracket and two upper ends expose two electrodes that two upper ends of resistive band outside housing and resistive band weld respectively and connect post.

2. electrochemistry cleaning salt bath furnace heater according to claim 1 is characterized in that:

The cross sectional shape of housing is circular;

Ceramics bracket comprises the round ceramic sheet that some horizontal intervals are from top to bottom arranged, be arranged on the cylindrical ceramic piece between per two adjacent ceramic sheets, fastening bolt, clamp nut, the radial dimension of potsherd is greater than the radial dimension of ceramic block, potsherd, the center of ceramic block all has first perforation vertically, the outer rim place of each potsherd all has symmetric arrangement and position vertically and is in two second perforation outside the ceramic block, the lower end edge of that ceramic block topmost radially have one with this ceramic block on the 3rd perforation that is isolated of first perforation, there are two support ears of extensions downwards the downside central area of that potsherd bottom;

That potsherd load is topmost put in the upper end of housing and with the uncovered covering in the upper end of housing, that potsherd bottom is landed on the bottom plate of housing by two support ears, resistive band second is installed on the ceramics bracket through second perforation of a side, the 3rd perforation, opposite side, after fastening bolt passes the first all perforation from bottom to up, clamp nut spins with fastening bolt and contacts with topmost that potsherd, makes described potsherd, ceramic block from top to down arranged stacked.

3. electrochemistry cleaning salt bath furnace heater according to claim 1 and 2, it is characterized in that: the material of housing is a stainless steel.

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