CN208390982U - A kind of counter-pressure casting furnace of pipe-blocking-proof - Google Patents

Abstract

The utility model relates to a kind of counter-pressure casting furnaces of pipe-blocking-proof, it includes furnace body, stalk and gas booster body, stalk is sealedly attached at the fire door at the top of furnace body, the lower end of stalk is immersed in the intracorporal melt of furnace, the upper end of stalk and the melt inlet communication of mold, stalk is located at the pipeline section outside furnace body equipped with anti-condensation heating component, gas boosting mechanism includes inertial gas tank, tracheae and air valve, inertial gas tank is connect by tracheae with the air inlet at the top of furnace body, and tracheae is equipped with air valve.It has the beneficial effect that, makes that the device quality cast out is good, flaw is few with the gas boosting mechanism that is connected in furnace body by being arranged outside furnace body convenient for making to be pressurized in furnace body so that furnace body inner melt is by stalk inflow die cavity, and can enhance pressure holding effect；Anti-condensation heating component is set in the part that stalk stretches out furnace body, guarantees that it does not solidify plugging.

Description

A kind of counter-pressure casting furnace of pipe-blocking-proof

Technical field

The utility model belongs to casting field, and in particular to a kind of counter-pressure casting furnace of pipe-blocking-proof.

Background technique

Antigravity casting is a kind of casting and pouring forming technology to grow up the 1950s.It makes in crucible Metal overcomes gravity and other resistances to fill casting mold from bottom to top along stalk under the effect of the pressure, and is cast under stress A kind of method of part.According to molten metal fill casting mold apply pressure pattern difference, antigravity casting can be divided into low pressure casting, Counter-pressure casting, adjustable pressure casting and suction pouring etc..

Casting mold inner metal liquid remains to casting under pressure and solidifies the time of end completely for the dwell time.When pressure maintaining Between substantially close to the time required for casting solidification.If the dwell time is too short, metal does not solidify completely, not solidified metal Liquid returns to crucible by stalk, and casting cannot get abundant feeding, or even cannot shape, and casting is caused to scrap；Dwell time mistake It is long, keep cast gate residual too long, cleaning is difficult, and even stalk outlet can sometimes freezed, influences to produce.The length of dwell time It is related with the wall thickness of casting, alloy species, casting mold property and crystallization and freezing pressure.Casting wall is thicker, alloy crystallization temperature Range is wider, and the dwell time is longer.

Currently, extensive utilization is into casting field for low-pressure casting process, when finding pressure maintaining in the actual production process Between it is most important, but molten metal often cools quickly from outside to inside in stalk, the metal due to cooling meat, in mold Melt cannot get good feeding, and the underproof phenomenon of casting is caused to occur often.Chinese utility model patent CN205043126U discloses a kind of foundry furnace, stretches out relatively slightly and in it being equipped with for the part setting of fire door in stalk upper end Liquid separation part, the two collective effect can reduce the cooling solidification speed of molten metal in the stalk outside furnace body to a certain degree, So that it is slower than the setting rate of molten metal in mold, thus can guarantee that molten metal obtains good benefit before solidification in mold Contracting, improves the qualification rate of product.But applicant states the foundry furnace of structure in use when producing, discovery, which is located at, rises a liquid Molten metal in pipe still has the cooled and solidified of greater probability before the solidification of mold inner melt, does not have feeding effect and easily makes It is blocked at stalk.

Utility model content

The technical problem to be solved by the utility model is to provide a kind of counter-pressure casting furnaces of pipe-blocking-proof, it is intended to overcome existing Pressure holding effect is bad after melt is filled with die cavity and stalk is easily made to expose oven body part blocking for counter-pressure casting furnace in technology It is insufficient.

The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of counter-pressure casting furnace of pipe-blocking-proof, packet Furnace body, stalk and gas booster body are included, the stalk is sealedly attached at the fire door at the top of the furnace body, described liter of liquid The lower end of pipe is immersed in the intracorporal melt of furnace, the upper end of the stalk and the melt inlet communication of mold, described liter of liquid Pipe is located at the pipeline section outside the furnace body and is equipped with anti-condensation heating component, and the gas boosting mechanism includes inertial gas tank, gas Pipe and air valve, the inertial gas tank are connect by the tracheae with the air inlet at the top of furnace body, and the tracheae is equipped with institute State air valve.

Based on the above technical solution, the utility model can also do following improvement.

Further, the anti-condensation heating component includes electric heating cover, and the electric heating cover is set in the stalk and is located at On pipeline section outside the furnace body.

Above-mentioned improved the advantage is that structure is simple, anti-condensation effect is good, and electric heating cover is easy-maintaining and replaces.

Further, the anti-condensation heating component includes electrical bar, is set in the pipeline section that the stalk is located at outside the furnace body There is liquid separation part, liquid separation part both ends are fixedly connected with the tube wall of the stalk respectively, and hollow cavity is equipped in the liquid separation part The tube wall junction of body and the liquid separation part and the stalk is equipped with the opening that the hollow cavity is put into for the electrical bar.

It is above-mentioned improved that the advantage is that on the one hand liquid separation part has liquid separation effect, on the other hand it is inserted into inside stalk, Therefore good effect of heat exchange, it is more energy saving.

Further, the hollow sandwich for increasing heat insulation effect is equipped in the side wall of the furnace body.

It is above-mentioned improved the advantage is that the hollow then coefficient of heat conduction of sidewall of the furnace body is low, effectively reduce the heat inside and outside furnace body and hand over It changes, prevents solidification of molten metal in furnace body.

Further, heat-barrier material is filled in the hollow sandwich.

The advantages of above-mentioned improvement is to further strengthen heat insulation.

Further, electric heating coil pipe is equipped in the furnace body bottom wall.

The advantages of above-mentioned improvement is to carry out effective supplementary heating to molten metal, maintain its in a molten state.

Compared with prior art, the utility model has the beneficial effects that by being arranged outside furnace body and being connected in furnace body On the one hand gas boosting mechanism is convenient for making to be pressurized in furnace body so that furnace body inner melt passes through stalk and flows into die cavity, on the other hand It can guarantee that differential pressure is stablized to ensure in die cavity inner melt cooling procedure in certain pressure inside and outside furnace body by gas boosting mechanism Under the conditions of power, i.e., pressure holding effect is good, then the device quality cast out is good, flaw is few；It is arranged in the part that stalk stretches out furnace body Anti-condensation heating component can effectively ensure that the temperature of stalk inner melt is higher than the temperature in die cavity, guarantee that it does not solidify plugging.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of the counter-pressure casting furnace of pipe-blocking-proof provided by the utility model；

Fig. 2 is the structural schematic diagram of stalk and its upper liquid separating part electrical bar；

Fig. 3 is the cross-sectional view of stalk at liquid separation part.

In attached drawing, parts list represented by the reference numerals are as follows:

1. furnace body；2. stalk；3. inertial gas tank；4. tracheae；5. air valve；6. electric heating cover；7. electrical bar；8. Liquid separation part；9. hollow sandwich；10. electric heating coil pipe.

Specific embodiment

The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical It is novel, it is not intended to limit the scope of the utility model.

As shown in Figures 1 to 3, the utility model provides a kind of counter-pressure casting furnace of pipe-blocking-proof comprising furnace body 1, stalk 2 With gas booster body, the stalk 2 is sealedly attached at the fire door at 1 top of furnace body, and the lower end of the stalk 2 is soaked Enter in the melt in the furnace body 1, the upper end of the stalk 2 and the melt inlet communication of mold, the stalk 2 are located at Pipeline section outside the furnace body 1 is equipped with anti-condensation heating component, the gas boosting mechanism include inertial gas tank 3, tracheae 4 and Air valve 5, the inertial gas tank 3 are connect by the tracheae 4 with the air inlet at 1 top of furnace body, and the tracheae 4 is equipped with The air valve 5.

It should be noted that as needed, molten metal import able to turn on or off can be also set on furnace body, when metal is in high temperature furnace Be processed into after melt in vivo through relay device be added in foundry furnace provided by the utility model to prepare to carry out melt to die cavity Injection.

Further, the anti-condensation heating component includes electric heating cover 6, and the electric heating cover 6 is set in the stalk 2 In on the pipeline section outside the furnace body 1.

It should be noted that the jacketed outside of electricity sets thermal insulation layer, to reduce heat loss, reach energy saving purpose.

Further, the anti-condensation heating component includes electrical bar 7, and the stalk 2 is located in the pipeline section outside the furnace body 1 Equipped with liquid separation part 8,8 both ends of liquid separation part are fixedly connected with the tube wall of the stalk 2 respectively, are equipped in the liquid separation part 8 The tube wall junction of hollow cavity and the liquid separation part 8 and the stalk 2, which is equipped with, is put into the hollow cavity for the electrical bar 7 The opening of body.

It should be noted that electrical bar is detachably connected with the hollow cavity in liquid separation part in order to replace and repair, electricity After hot pin is put into, the opening of hollow cavity should set insulation lid.

Further, the hollow sandwich 9 for increasing heat insulation effect is equipped in the side wall of the furnace body 1.

Further, heat-barrier material is filled in the hollow sandwich 9.

Further, electric heating coil pipe 10 is equipped in 1 bottom wall of furnace body.

It should be noted that pressure sensor and liquidometer can be arranged in furnace body as needed to the intracorporal air pressure of furnace And the liquid level of melt is perceived, and control panel is arranged outside furnace body, the corresponding signal transmission that pressure sensor and liquidometer obtain To control panel and show.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model Within the scope of shield.

Claims (6)

1. a kind of counter-pressure casting furnace of pipe-blocking-proof, which is characterized in that including furnace body (1), stalk (2) and gas booster body, The stalk (2) is sealedly attached at the fire door at the top of the furnace body (1), and the furnace is immersed in the lower end of the stalk (2) In melt in body (1), the upper end of the stalk (2) and the melt inlet communication of mold, the stalk (2) are located at described The pipeline section of furnace body (1) outside is equipped with anti-condensation heating component, and the gas boosting mechanism includes inertial gas tank (3), tracheae (4) And air valve (5), the inertial gas tank (3) are connect by the tracheae (4) with the air inlet at the top of furnace body (1), the gas It manages (4) and is equipped with the air valve (5).

2. a kind of counter-pressure casting furnace of pipe-blocking-proof according to claim 1, which is characterized in that the anti-condensation heating component packet It includes electric heating cover (6), the electric heating cover (6) is set in the stalk (2) and is located on the pipeline section of the furnace body (1) outside.

3. a kind of counter-pressure casting furnace of pipe-blocking-proof according to claim 1, which is characterized in that the anti-condensation heating component packet It includes electrical bar (7), the stalk (2), which is located in the pipeline section of the furnace body (1) outside, is equipped with liquid separation part (8), the liquid separation part (8) Both ends are fixedly connected with the tube wall of the stalk (2) respectively, and hollow cavity and the liquid separation part are equipped in the liquid separation part (8) (8) opening that the hollow cavity is put into for the electrical bar (7) is equipped with the tube wall junction of the stalk (2).

4. a kind of counter-pressure casting furnace of pipe-blocking-proof according to claim 1, which is characterized in that the side wall of the furnace body (1) The interior hollow sandwich (9) being equipped with for increasing heat insulation effect.

5. a kind of counter-pressure casting furnace of pipe-blocking-proof according to claim 4, which is characterized in that in the hollow sandwich (9) Filled with heat-barrier material.

6. a kind of counter-pressure casting furnace of pipe-blocking-proof according to any one of claims 1 to 5, which is characterized in that the furnace body (1) electric heating coil pipe (10) are equipped in bottom wall.