CN103447459A - Method and device for filtering and removing solid impurities in die materials of investment casting - Google Patents
Method and device for filtering and removing solid impurities in die materials of investment casting Download PDFInfo
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- CN103447459A CN103447459A CN2013100940436A CN201310094043A CN103447459A CN 103447459 A CN103447459 A CN 103447459A CN 2013100940436 A CN2013100940436 A CN 2013100940436A CN 201310094043 A CN201310094043 A CN 201310094043A CN 103447459 A CN103447459 A CN 103447459A
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Abstract
The invention discloses a method and a device for filtering and removing solid impurities in die materials of investment casting. The method comprises the following steps: heating and melting die materials to be treated in a storage barrel for to the treating temperature, and simultaneously heating an insulating filtering tank, a pipeline, a valve and a pump head and the like to the treating temperature; opening a feeding control valve and a discharging control valve, starting a delivery pump, delivering the preheated die materials to be treated and recovered into the insulating filtering tank, carrying out filtering, and recovering the filtered die materials flowing out of a discharging port for spare use, wherein settled slag can be discharged by a slag discharging pipeline at the bottom part of the insulating filtering tank; after being blocked, a filtering core body can be backflushed by using filtered clean die materials. The method and the device disclosed by the invention have the advantages that the influence of long-time high-temperature standing for deslagging on the performance of the die materials is avoided, and continuous operation is realized; the method is high in treating speed, good in effect, low in energy consumption, small in equipment occupying space and is easily matched with a dewatering treatment process of the die materials.
Description
Technical field
The invention belongs to the solid-liquid separation technique field, processing method and the device of solid impurity in espespecially a kind of filtering and removing investment casting mould materials, the de-slag that is applicable to different types of investment casting mould materials is processed, and solves the problem that the processing time is long, energy consumption is high, efficiency is low, equipment occupation space is large of existing de-slag processing method.
Background technology
In investment casting process, molten dewax mould (dewaxing) is one of master operation.The method of dewaxing has multiple, as lost-wax process, microwave lost-wax process, hot sand lost-wax process etc. are burnt in organic solvent method, hot water dewaxing's method, high steam lost-wax process, sudden strain of a muscle.Existing most widely used be high pressure steam process, be also the main process for dewaxing of current model casting, employing the method has that quality of investment shell is good, Pattern Reclamation rate advantages of higher.But, no matter, in adopting the process of which kind of dewaxing treatment method, all can sneak into the approximately various solid impurities of 0.5% left and right in the mould material, particle, dust and the iron oxide etc. that come off as the shell surface.The mould material be recycled, the impurity that these must be sneaked in the mould material is removed.The method that the impurity that the mould material is sneaked into to these by the domestic current overwhelming majority's essence casting factory carries out separating treatment is standing de-slag.For these field trashes are separated to greatest extent, usually need to be at the temperature of 90 ℃ of left and right standing about 10 hours; Because prolonged stay at high temperature, the easy oxidation deterioration of mould material, make that mould material viscosity and fragility increase, darken, performance worsens, so that finally can't normally use.Simultaneously, the treatment effeciency of existing standing de-slag processing method is low, and the processing time is long, and power consumption, and equipment occupation space is large.
Summary of the invention
The object of the invention is to solve that the treatment effeciency that the de-slag technology of above-mentioned Pattern Reclamation exists is low, energy consumption is high and the mould material property can be descended the degradation problem, a kind of method of utilizing solid impurity in the filtering and removing investment casting mould materials is provided, and it can realize the de-slag process of mould material of energy-conservation, efficient, continuity and high stability.
Technical scheme of the present invention is achieved in the following ways:
A kind of method of solid impurity in filtering and removing investment casting mould materials is characterized in that: will reclaim the mould material and be placed in storage barrel, heat fused is to treatment temperature; To be incubated filtering tank, pipeline, valve, pump head etc. and be heated to the treatment process temperature; Open charging control valve and discharging control valve, start delivery pump, will be transported to through the pending recovery mould material of preheating in the insulation filtering tank, filtered, the mould material after filtration reclaims standby after discharging opening flows out; Sediment can be discharged by the deslagging pipeline of insulation filtering tank bottom; After stopping up, filtering core can be recoiled with the clean mould material after filtering.
In order better to realize the present invention, described de-residues processing technique temperature is determined according to fusing point and its viscosity under different temperatures of mould material.
The device of solid impurity in a kind of filtering and removing investment casting mould materials, mainly comprise that insulation filtering tank, feeding pipe, discharging pipeline, deslagging pipeline, pressure sensor, filtering core form.It is characterized in that: the insulation filtering tank is vertical structure, and tank body is connected by the cover flange with one or more passages with end socket, and the passage place of cover flange is fixed and be sealed in to the discharging collar extension of filtering core; Charging aperture is arranged on insulation filtering tank bottom, and discharging opening is arranged on the top of insulation filtering tank, and bottom is provided with slag-drip opening; The insulation filtering tank is provided with the feed pressure sensor.
Further feature of the present invention is: the heat tracing of insulation filtering tank can adopt externally uniform installation electromagnetic heater, maybe will be incubated filtering tank and be arranged to sandwich, by passing into the heating medium for heating insulation in the interlayer to tank.
Further feature of the present invention is: the number of filtering core can be one or more, uniform in the insulation filtering tank; The structure of filtering core can be the filtering materials such as sintered filter core, foldable filter element, filter bag.
Further feature of the present invention is: insulation is filtered in tank body can be divided into several districts, and the filtering material of different pore size is installed in each district, and the mould material is turned back to flow and filtered step by step between each district.
Further feature of the present invention is: when feed pressure reaches certain value, the clean mould material that can be passed into after de-slag by discharging opening carries out backwash.
Method and the device of solid impurity in filtering and removing investment casting mould materials of the present invention, not only be applicable to the filtration treatment of investment casting mould materials, also applicable to other the de-slag of the chemical products that need at high temperature filter, processes.
Compared with the prior art the present invention, has following advantage and beneficial effect:
(1) the invention provides method and the device of solid impurity in a kind of filtering and removing investment casting mould materials, can in the short period of time the solid impurity in the mould material be removed, avoided the impact of the de-slag of long-time quiescence in high temperature on mould material property energy;
(2) filtering core can adopt micropore or ultramicropore filtering material, can remove the molecule that standing de-slag method can not be removed, and is conducive to improve mould material quality;
(3) this processing method can realize continuous operation, and overall structure is simply compact, takes up room little, and processing speed is fast, and energy consumption is low, Yi Yumo material dehydration or other coordinative composition of equipments.
The accompanying drawing explanation
The structural representation of solid impurity device in Fig. 1 filtering and removing investment casting mould materials of the present invention
In figure: 1, insulation filtering tank 2, charging control valve 3, filtering core 4, cover flange 5, discharging control valve 6, pressure sensor 7, slagging coutrol valve
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
A kind of method of solid impurity in filtering and removing investment casting mould materials, is characterized in that recovery mould material is placed in to storage barrel, and heat fused is to treatment temperature; To be incubated filtering tank, pipeline, valve, pump head etc. and be heated to the treatment process temperature; Open charging control valve and discharging control valve, start delivery pump, will be transported to through the pending recovery mould material of preheating in the insulation filtering tank, filtered, the mould material after filtration reclaims standby after discharging opening flows out; Sediment can be discharged by the deslagging pipeline of insulation filtering tank bottom; After stopping up, filtering core can be recoiled with the clean mould material after filtering.
As shown in Figure 1, it is the device of solid impurity in a kind of filtering and removing investment casting mould materials of the present invention, comprise insulation filtering tank 1, charging control valve 2, filtering core 3, cover flange 4, discharging control valve 5, pressure sensor 6, slagging coutrol valve 7, insulation filtering tank 1 is vertical structure, the end socket of tank body is connected by the cover flange 4 with one or more passages, and the passage place of cover flange 4 is fixed and be sealed in to the discharging collar extension of filtering core 3; Charging control valve 2 is arranged on insulation filtering tank 1 bottom, and discharging control valve 5 is arranged on the top of insulation filtering tank 1, and bottom is provided with slagging coutrol valve 7; Insulation filtering tank 1 is provided with feed pressure sensor 6.
The heat tracing of the insulation filtering tank 1 in Fig. 1 can adopt externally uniform installation electromagnetic heater, maybe will be incubated filtering tank and be arranged to sandwich, by passing into the heating medium for heating insulation in the interlayer to tank.
A plurality of passages of the cover flange 4 in Fig. 1 are for filtering core 3 is installed, and cover flange 4 and filtering core 3 will be incubated filtering tank 1 and be divided into filter front mould material district and filter rear mold material district.
The filtering core 3 that is arranged on cover flange 4 in Fig. 1 is the filtering material that sintered filter core, foldable filter element, filter bag etc. can be made regular shape.Filtering core should fill up the inner space of whole insulation filtering tank 1 as much as possible.Filtering the pocket type filtering core need support and fix with the skeleton of cage type or webmaster shape structure.
The device of solid impurity in filtering and removing investment casting mould materials shown in Fig. 1, its concrete operating process is: first the pending mould material in storage barrel is heated to 90-120 ℃, the surface that insulation filtering tank 1, conveyance conduit and pump head, valve etc. contact with the mould material preheats 90-120 ℃, open charging control valve 2 and discharging control valve 5, open delivery pump (not shown in FIG.), the liquid mould material of fusing is sent in insulation filtering tank 1, is filtered by filtering core 3.The sediment of insulation filtering tank 1 bottom can regularly be opened slagging coutrol valve 7 and carry out deslagging.Longer when running time, after the feed pressure that pressure sensor 6 shows reaches certain numerical value, when the rate of filtration obviously descends, the slagging coutrol valve 7 of insulation filtering tank 1 bottom is opened to deslagging, stop charging, close charging control valve 2, open and process control valve 5 and slagging coutrol valve 7, clean mould material after de-slag is pumped into by discharging opening, filtering core 3 is carried out to backwash.Insulation filtering tank 1 is interior to be arranged point for measuring temperature and is 90-120 ℃ by the temperature that heat tracing system (not shown in FIG.) maintains processing procedure.
The above; embodiment is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; under the prerequisite of the spirit that does not break away from the technology of the present invention; various distortion and improvement that this area engineers and technicians make technical scheme of the present invention, all should fall in the definite protection domain of claims of the present invention.
Claims (7)
1. the method for solid impurity in a filtering and removing investment casting mould materials, is characterized in that: pending mould material heat fused in storage barrel, to treatment temperature, will be incubated to filtering tank, pipeline, valve, pump head etc. simultaneously and be heated to treatment temperature; Open charging control valve and discharging control valve, start delivery pump, will be transported to through the pending recovery mould material of preheating in the insulation filtering tank, filtered, the mould material after filtration reclaims standby after discharging opening flows out; Sediment can be discharged by the deslagging pipeline of insulation filtering tank bottom; After stopping up, filtering core can be recoiled with the clean mould material after filtering.
2. the method for solid impurity in filtering and removing investment casting mould materials according to claim 1 is characterized in that: described de-residues processing technique temperature is determined according to fusing point and its viscosity under different temperatures of mould material.
3. the device of solid impurity in a filtering and removing investment casting mould materials, be the device that implements the claims the described method of 1 and 2 any one, mainly comprises that insulation filtering tank, feeding pipe, discharging pipeline, deslagging pipeline, pressure sensor, filtering core form; It is characterized in that: the insulation filtering tank is vertical structure, and tank body is connected by the cover flange with one or more passages with end socket, and the passage place of cover flange is fixed and be sealed in to the discharging collar extension of filtering core; Charging aperture is arranged on insulation filtering tank bottom, and discharging opening is arranged on the top of insulation filtering tank, and bottom is provided with slag-drip opening; The insulation filtering tank is provided with the feed pressure sensor.
4. the device of solid impurity in a kind of filtering and removing investment casting mould materials according to claim 3, it is characterized in that: the heat tracing of insulation filtering tank can adopt externally uniform installation electromagnetic heater, maybe will be incubated filtering tank and be arranged to sandwich, by passing into the heating medium for heating insulation in the interlayer to tank.
5. the device of solid impurity in a kind of filtering and removing investment casting mould materials according to claim 3, it is characterized in that: the number of filtering core can be one or more, uniform in the insulation filtering tank; The structure of filtering core can be the filtering materials such as sintered filter core, foldable filter element, filter bag.
6. the device of solid impurity in a kind of filtering and removing investment casting mould materials according to claim 3, it is characterized in that: insulation is filtered in tank body can be divided into several districts, the filtering material of different pore size is installed in each district, and the mould material is turned back to flow and filtered step by step between each district.
7. the device of solid impurity in a kind of filtering and removing investment casting mould materials according to claim 3 is characterized in that: when feed pressure reaches certain value, the clean mould material that can be passed into after de-slag by discharging opening carries out backwash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310094043.6A CN103447459B (en) | 2013-03-22 | 2013-03-22 | The method of solid impurity and device in a kind of filtering and removing investment casting mould materials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310094043.6A CN103447459B (en) | 2013-03-22 | 2013-03-22 | The method of solid impurity and device in a kind of filtering and removing investment casting mould materials |
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| CN103447459A true CN103447459A (en) | 2013-12-18 |
| CN103447459B CN103447459B (en) | 2015-12-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759124A (en) * | 2015-03-31 | 2015-07-08 | 山东惠尔佳生物有限公司 | Special filter for phosphatide oil and filtering method |
| CN113577875A (en) * | 2021-08-13 | 2021-11-02 | 江苏丰泽生物工程设备制造有限公司 | Solid-liquid separator with automatic slag discharging structure for fermentation ingredients and use method thereof |
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| CN102816934A (en) * | 2012-09-10 | 2012-12-12 | 曲险峰 | Method and device for centrifugal filtering of solid impurities from investment casting pattern material |
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2013
- 2013-03-22 CN CN201310094043.6A patent/CN103447459B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190922218A (en) * | 1909-09-29 | 1910-09-29 | William Adolf Freymuth | Improvements in or relating to the Treatment of Lac. |
| CN1218419A (en) * | 1996-05-16 | 1999-06-02 | 阿克霍姆资源有限公司 | Liquid and gas purification and filtration |
| CN101405066A (en) * | 2006-03-21 | 2009-04-08 | Bp北美公司 | Apparatus and process for the separation of solids and liquids |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104759124A (en) * | 2015-03-31 | 2015-07-08 | 山东惠尔佳生物有限公司 | Special filter for phosphatide oil and filtering method |
| CN113577875A (en) * | 2021-08-13 | 2021-11-02 | 江苏丰泽生物工程设备制造有限公司 | Solid-liquid separator with automatic slag discharging structure for fermentation ingredients and use method thereof |
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| CN103447459B (en) | 2015-12-09 |
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Granted publication date: 20151209 Termination date: 20180322 |