CN105108108A - Low-pressure casting holding furnace with mechanical pump for mold filling - Google Patents
Low-pressure casting holding furnace with mechanical pump for mold filling Download PDFInfo
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- CN105108108A CN105108108A CN201510576039.2A CN201510576039A CN105108108A CN 105108108 A CN105108108 A CN 105108108A CN 201510576039 A CN201510576039 A CN 201510576039A CN 105108108 A CN105108108 A CN 105108108A
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Abstract
The invention discloses a low-pressure casting holding furnace with a mechanical pump for mold filling. The low-pressure casting holding furnace comprises a furnace body, a furnace lid and a mold-filling pressure maintaining system. A round hole is formed in the furnace lid. The mold-filling pressure maintaining system is composed of a motor, the mechanical pump, a riser pipe and a graphite washer. A pump shell of the mechanical pump and the riser pipe are integrated, and a rotor of the mechanical pump can slide vertically relative to the riser pipe. According to the mold-filling pressure maintaining system, liquid level suspension is achieved by controlling the rotating speed of the motor, and liquid level control is achieved through the graphite washer which is used as a contact and mounted on the upper portion of the riser pipe. The mold-filling pressure maintaining system is convenient to mount, and pressure rising and pressure maintaining after mold filling can both be automatically completed; the working furnace body does not need to be sealed, and maintenance is convenient.
Description
Technical field
The invention belongs to low pressure casting equipment, be specifically related to the low-pressure casting thermal insulation furnace that a kind of mechanical pump fills type.
Background technology
Low-pressure casting process adds pressure to the holding furnace sealed to make aluminium liquid clamp-on die cavity, because under high temperature, metal furnace shell bearing capacity is poor, generally all uses lower pressure to pressurize.The shortcoming of low pressure casting comprises: when 1) producing, needs periodically inject cold air eliminating hot-air in stove, and thus furnace temperature fluctuation is large, and the fresh air abundant containing oxygen impacts high temperature aluminum water, and the oxidation of acceleration aluminium water, slag making, oxygen uptake, affect aluminium water quality.2) body of heater must seal, and must stop production, affect efficiency when not only having increased cost but also made to add aluminium water.3) thus harmful effect is had to the quality of foundry goods because body of heater often leaks gas, very tight to the against leakage functional requirement of control system.4) main frame must be equipped with expensive liquid level pressurizing control system, and will make the eternal gas exhaust piping in tow of body of heater.5) owing to compressed air will be had alternately to pass in and out holding furnace when producing, thus inert gas shielding raising aluminium water quality is difficult to carry out.Have in addition and from furnace bottom, mechanical pump is installed and completes low pressure casting and fill the method for type also there are the following problems: when 6) changing mechanical pump, after blowing out stopping production removing aluminium water, new pump must could be installed, and also need with refractory material knotting after installing, also must could use the dry baking burning long period.7) need in stove, lay stalk could work.8) connection of stalk and mechanical pump not only bothers but also unreliable, will become hidden danger.
Summary of the invention
be intended to these problems thoroughly solving existing low-pressure casting thermal insulation furnace, the invention provides the low-pressure casting thermal insulation furnace that a kind of mechanical pump fills type.
the present invention's adopted technical scheme that solves the problem is: a kind of mechanical pump fills the low-pressure casting thermal insulation furnace of type, comprise body of heater, bell and fill type pressure-retaining system, described bell is arranged the circular hole of diameter 400-600mm, fill type pressure-retaining system and comprise motor, mechanical pump, stalk, graphite gasket, above-mentioned part is connected by combination or retaining mechanism, the described type pressure-retaining system that fills is fixed on small furnace cover, and small furnace cover, by the hole of bell, is arranged on the bell of holding furnace.
motor low cruise on mechanical pump, guarantees that filling type pressure-retaining system liquid level suspends.Stalk top arranges graphite gasket, as the contact filling type pressure-retaining system control liquid level.The described pump case filling the mechanical pump of type pressure-retaining system and stalk are set to integral type.Can slide up and down between the rotor of described mechanical pump and stalk, the fixing of the motor of the rotor motion of driving pump more be coordinated with the fixing of stalk, does not interfere.
described mechanical pump pump case and stalk are made up of graphite material, and further, described mechanical pump pump case and stalk are made by isostatic pressing formed graphite.Described mechanical pump is the one of Archimedes's mechanical pump, gear pump, vane pump, piston pump, centrifugal pump.
the present invention does not arrange maintenance stove, and work furnace chamber does not need sealing.
stalk of the present invention and mechanical pump are integrated, and the rotor of mechanical pump can within it slide up and down, thus easy to install and use, also eliminate the stress between two fixing.Fill type complete after pressure surge and pressurize all have mechanical pump characteristics automatically to complete, rise to the initial time with pressurize without the need to Liquid level compensator and setting pressure.When mechanical pump characteristics is good, when flow is zero, pressure can rise instantaneously and reach 10-20MPa, and use air injection machine both can complete the work of extrusion casint, by making, the cost of extrusion casint is consistent with low pressure casting.
work body of heater, without the need to sealing, can open wide air, greatly reduce the cost of holding furnace, eliminates body of heater and to leak gas the harm brought to product, also can not affect the normal operation of production when adding aluminium water.Due in production process without the need to supplying gas in stove and being vented; in blanketing with inert gas stove, aluminium water becomes simple and cost is low; in-furnace temperature is more constant, decreases energy consumption simultaneously, eliminates the increase come to aluminium water-band because of intake and exhaust and is oxidized, the problem such as is mingled with.Eliminate expensive liquid level pressurizing control system, eliminate the intake and exhaust pipeline on holding furnace.Owing to driving the power filling type to be no longer air pressure, but mechanical pump, even if therefore stalk gas leakage also there will not be pore.This equipment utilization machinery pump characteristics, completes the suspension of liquid level in stalk, without the need to double-chamber structure, more at the low rotational speed.When changing mechanical pump, as long as body of heater is removed, extract stalk, mechanical pump and auxiliary small furnace cover, reinsert an auxiliary small furnace cover through preheating.
Accompanying drawing explanation
fig. 1 is the low-pressure casting thermal insulation furnace schematic diagram that a kind of mechanical pump of the present invention fills type.
in figure: 1-workbench 2-graphite gasket 3-aluminium water 4-bell 5-body of heater 6-immersion heater 7-mechanical pump 8-motor, 9-stalk.
Detailed description of the invention
the present invention's adopted technical scheme that solves the problem is: a kind of mechanical pump fills the low-pressure casting thermal insulation furnace of type, comprise body of heater 5, bell 4 and fill type pressure-retaining system, described bell 4 is arranged the circular hole of diameter 400-600mm, fill type pressure-retaining system and comprise motor 8, mechanical pump 7, stalk 9, graphite gasket 2, above-mentioned part is connected by combination or retaining mechanism, the described type pressure-retaining system that fills is fixed on small furnace cover, and small furnace cover, by the hole of bell, is arranged on the bell 4 of holding furnace.
motor 8 low cruise on mechanical pump 7, guarantees that filling type pressure-retaining system liquid level suspends.Stalk 9 top arranges graphite gasket 2, as the contact filling type pressure-retaining system control liquid level.Pump case and the stalk 9 of the described mechanical pump 7 filling type pressure-retaining system are set to integral type.Can slide up and down between the rotor of described mechanical pump 7 and stalk 9, the fixing of the motor of the rotor motion of driving pump more be coordinated with the fixing of stalk, does not interfere.
described mechanical pump 7 pump case and stalk 9 are made up of graphite material, and further, described mechanical pump pump case and stalk are made by isostatic pressing formed graphite.Described mechanical pump 7 is the one of Archimedes's mechanical pump, gear pump, vane pump, piston pump, centrifugal pump.
the present invention does not arrange maintenance stove, and work furnace chamber does not need sealing.
Claims (11)
1. a mechanical pump fills the low-pressure casting thermal insulation furnace of type, comprise body of heater (5), bell (4) and fill type pressure-retaining system, it is characterized in that: the circular hole described bell (4) being arranged diameter 400-600mm, fill type pressure-retaining system and comprise motor (8), mechanical pump (7), stalk (9), rotor, graphite gasket (2), above-mentioned part is connected by combination or retaining mechanism, the described type pressure-retaining system that fills is fixed on small furnace cover, small furnace cover, by the hole of bell, is arranged on the bell (4) of holding furnace.
2.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described holding furnace does not keep stove, and work furnace chamber does not need sealing.
3.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: stalk (9) top arranges graphite gasket (2), as the contact filling type pressure-retaining system control liquid level.
4.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: pump case and the stalk (9) of mechanical pump (7) are set to integral type.
5.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described mechanical pump (7) is Archimedean screw pump.
6.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described mechanical pump (7) is gear pump.
7.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described mechanical pump (7) is vane pump.
8.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described mechanical pump (7) is piston pump.
9.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: described mechanical pump (7) is centrifugal pump.
10.
a kind of mechanical pump according to claim 1 fills the low-pressure casting thermal insulation furnace of type, it is characterized in that: pump case and the stalk (9) of mechanical pump (7) are made up of graphite material.
11.
mechanical pump according to claim 10, is characterized in that: pump case and the stalk (9) of described mechanical pump (7) are made by isostatic pressing formed graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576039.2A CN105108108A (en) | 2015-09-11 | 2015-09-11 | Low-pressure casting holding furnace with mechanical pump for mold filling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510576039.2A CN105108108A (en) | 2015-09-11 | 2015-09-11 | Low-pressure casting holding furnace with mechanical pump for mold filling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105108108A true CN105108108A (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510576039.2A Pending CN105108108A (en) | 2015-09-11 | 2015-09-11 | Low-pressure casting holding furnace with mechanical pump for mold filling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513648A (en) * | 2016-12-05 | 2017-03-22 | 熊运海 | Aluminum alloy furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046072A1 (en) * | 1998-03-11 | 1999-09-16 | Gut Giesserei Umwelt Technik Gmbh | Casting device and casting method with post compression |
| CN2569948Y (en) * | 2002-09-30 | 2003-09-03 | 福州华镁新技术开发有限公司 | Magnesium alloy low-pressure die-casting machine |
| CN203556841U (en) * | 2013-11-29 | 2014-04-23 | 无锡市双全机械制造厂 | Quantitative heat preserving furnace device of low-pressure casting machine |
| CN203843149U (en) * | 2014-05-23 | 2014-09-24 | 阜新市万达铸业有限公司 | Low-pressure casting holding furnace |
| CN205289713U (en) * | 2015-09-11 | 2016-06-08 | 中信戴卡股份有限公司 | Mechanical pump fills low pressure casting heat preservation stove of type |
-
2015
- 2015-09-11 CN CN201510576039.2A patent/CN105108108A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999046072A1 (en) * | 1998-03-11 | 1999-09-16 | Gut Giesserei Umwelt Technik Gmbh | Casting device and casting method with post compression |
| CN2569948Y (en) * | 2002-09-30 | 2003-09-03 | 福州华镁新技术开发有限公司 | Magnesium alloy low-pressure die-casting machine |
| CN203556841U (en) * | 2013-11-29 | 2014-04-23 | 无锡市双全机械制造厂 | Quantitative heat preserving furnace device of low-pressure casting machine |
| CN203843149U (en) * | 2014-05-23 | 2014-09-24 | 阜新市万达铸业有限公司 | Low-pressure casting holding furnace |
| CN205289713U (en) * | 2015-09-11 | 2016-06-08 | 中信戴卡股份有限公司 | Mechanical pump fills low pressure casting heat preservation stove of type |
Non-Patent Citations (1)
| Title |
|---|
| 龙思远等: "压铸镁合金气体保护连续熔化浇注技术与设备", 《特种铸造及有色合金》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513648A (en) * | 2016-12-05 | 2017-03-22 | 熊运海 | Aluminum alloy furnace |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151202 |