CN106825395B - Cavityless casting molding sand sequencing batch type circulating cooling processing method - Google Patents
Cavityless casting molding sand sequencing batch type circulating cooling processing method Download PDFInfo
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- CN106825395B CN106825395B CN201710279095.9A CN201710279095A CN106825395B CN 106825395 B CN106825395 B CN 106825395B CN 201710279095 A CN201710279095 A CN 201710279095A CN 106825395 B CN106825395 B CN 106825395B
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- molding sand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/10—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by dust separating
Abstract
The invention discloses a kind of cavityless casting molding sand sequencing batch type circulating cooling processing methods, including using the cooling step for allowing molding sand to enter in heat exchange container with heat exchanging fluid pipeline progress Hot swapping mode, it is characterized in that, molding sand is allowed to enter in heat exchange container in bulk, and it will realize that the molding sand after first time heat exchange process is promoted to heat exchange container upper end again outside heat exchange container in heat exchange container during falling by elevator, repetition enters in heat exchange container and heat exchanging fluid pipeline carries out Hot swapping, it realizes and the cycle heat exchange of molding sand is handled, until temperature is reduced to the circulation batch sequence cooling treatment shaked out and realized to hot sand after meeting the requirements.The present invention, which has, to be implemented simply, to can be realized the circulation sequencing batch type cooling treatment to molding sand, molding sand cooling effect and advantage having excellent cooling efficiency.
Description
Technical field
The present invention relates to lost foam casting apparatus field, specifically a kind of full mold casting for the hot sand processing of evaporative pattern molding sand
It makes with molding sand sequencing batch type circulating cooling processing method.
Background technique
Lost foam casting (also known as cavityless casting) is will be similar with casting dimension shapeParaffinOr bubbles model bonding group
Synthetic model cluster is brushedFireproof coatingAnd after drying, it is embedded in dryQuartz sandMiddle vibration molding, is poured under negative pressure, makes model gas
Change, liquid metals occupies modal position, is formed after solidification is coolingCastingNovel casting method.The technique is without modulus, nothing point
Type face, without sand core, thus casting does not have overlap, burr and pattern draft, and reduce as the combination of type core and caused by size
Error.Therefore, in the past 20 yearsTechnology of EPCIt is rapidly developed in worldwide.
On disappearance foundry production line, casting model powder needed after being removed from casting embryo by broken, screening with it is cooling etc. processed
Journey sends leading portion molding procedure back to.How hot sand after wherein casting therefore rapidly carries out cooling treatment since temperature is very high
It is the key that improve casting efficiency to come into operation again.
The existing casting model powder type of cooling, has following several, and one is hot sand is placed on specified place using most traditional
Temperature fall is cooling, and this mode is very slow in the presence of cooling and occupied ground is larger, it is difficult to the defects of managing, it is substantially superseded.
The defects of second is that cooled down by boiling cooling bed, but that there are equipment costs is higher, needs subsequent secondary treatment exhaust gas more.Three
Be it is the most commonly used using heat exchanger carry out it is cooling by the way of, in the existing general heat exchanger type of cooling, due to water
Specific heat capacity is larger, therefore cooling water is usually used as circulatory mediator, realizes recirculated water cooling heat exchange processing.Such as ZL
201610715605.8 a kind of once disclosed lost foam production line sand quickly cooling device；A kind of once disclosed disappearance molding of ZL
Sand cooling device is made, this cooling technology by the way of circulating water is belonged to.
But this common recirculated water cooling exchanges heat processing mode, equally exists that occupied ground is more, and labor intensity of workers is big,
The defects of environmental pollution is serious, and climate is affected.More more hot area (such as Chongqing where applicant
Area) summer water temperature it is higher when, due to cooling water Hot swapping cause temperature increase after, recycled after being difficult fast cooling,
Lead to occur that cooling efficiency is lower, and time-consuming for system, energy consumption is high, the big defect of running noises；So that sand process flow deposits sand amount
Greatly, if it is separately larger using circulating water cooling equipment volume and occupied area.
Therefore the height of cooling rate restricts entire sand process flow and the operation of equipment is horizontal；For those skilled in the art
Member is more excellent it is necessary to research and develop a kind of cooling effect, and molding sand cooling efficiency is high, is influenced by seasonal temperature small, and use is more stable, adapts to
The hot sand processing technique of the better evaporative pattern of environment temperature.
To solve the above-mentioned problems, applicant considers to devise a kind of lost pattern sand cooling treatment system, including mould turnover
Machine and heat-exchanger rig, heat-exchanger rig include a heat exchange container, and heat exchange container is internally provided with the fluid heat transfer for heat exchange
Pipeline, heat exchanging fluid pipeline is connected to the heat exchanging fluid cooling device being set to outside heat exchange container and the heat exchanging fluid supplied in it follows
Circulation is dynamic, turnover machine mould turnover direction side and the linking of heat exchange container upper end sand inlet, is provided with and takes out of in the middle part of heat exchange container lower end
The sand export of sand switch valve；It is characterized in that the heat exchanging fluid in the heat exchanging fluid pipeline is gaseous refrigerant, the heat exchange
Fluid cooling device includes concatenated compressor of air conditioner and A/C evaporator, and compressor of air conditioner is used for gaseous refrigerant boil down to
Liquid, A/C evaporator are used to convert the refrigerant of liquid to the gaseous state of low temperature.
In this way using gaseous refrigerant as heat exchanging fluid, the mode phase of the mode of this air cooling and existing conventional water cooling
Than gaseous refrigerant rapidly can cool down and take away by compressor of air conditioner and A/C evaporator in heat exchanging fluid cooling device
Heat can recycle after fast cooling, greatly improve heat exchange efficiency, in this way, being used as and changing with use cooling water
The water-cooling pattern of hot fluid is compared, and the cooling of heat exchanging fluid is influenced smaller by temperature.It is set to be particularly suitable for being difficult to fastly in cooling water
The high temperature area of prompt drop temperature processing uses.
But wherein, also need to consider when molding sand quantity to be processed is larger and needs realization batch order processing, how preferably
Guarantee the problem of improving cooling treatment effect.
Summary of the invention
In view of the above shortcomings of the prior art, the technical problems to be solved by the present invention are: how to provide a kind of implementation letter
It is single, it can be realized the sequencing batch type cooling treatment to molding sand, improve the cavityless casting molding sand batch sequence of molding sand cooling effect and efficiency
Formula circulating cooling processing method.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions:
A kind of cavityless casting molding sand sequencing batch type circulating cooling processing method, including use and molding sand is allowed to enter in heat exchange container
The cooling step of Hot swapping mode is carried out with heat exchanging fluid pipeline, which is characterized in that molding sand is allowed to enter heat exchange container in bulk
In, and by elevator by the molding sand after realizing first time heat exchange process in heat exchange container during falling from heat exchange container
Outside is promoted to heat exchange container upper end again, and repetition enters in heat exchange container and heat exchanging fluid pipeline carries out Hot swapping, realizes
Cycle heat exchange processing to molding sand is realized at cooling to the circulation batch sequence of hot sand until temperature is reduced to shake out after meeting the requirements
Reason.
The circulating cooling of molding sand is handled in this way, being repeatedly lifted up and realizing by elevator, greatly improves cooling effect.
It is particularly suitable for the situation that molding sand treating capacity is big but produces without continuous processing.
It further include that the part cleaning shaft of dust pelletizing system is set to formation dust-collecting and heat exchanging pipe in heat exchange container as optimization
Road and the molding sand of process exchange heat, by dedusting distinguished and admirable the step of taking away molding sand heat.
In this way, introduce dust-collecting and heat exchanging pipeline in heat exchange container, is exchanged heat by dedusting is distinguished and admirable and take away part molding sand
Heat realizes dual-cooled, greatly improves molding sand heat exchange cooling effect.
As optimization, this method is realized using molding sand sequencing batch type processing system below, the molding sand sequencing batch type processing
System, including turnover machine and heat exchange container, heat exchange container are internally provided with the fluid heat transfer pipeline for heat exchange, heat exchanging fluid
Pipeline is connected to the heat exchanging fluid cooling device being set to outside heat exchange container and the heat exchanging fluid supplied in it circulates, and heat exchange is held
Band is provided in the middle part of device lower end to shake out the sand export of switch valve；It is characterized in that, the charging side of heat exchange container is also vertical side by side
It is provided with an elevator, elevator lower end is provided with for into the elevator of sand into sand hopper, elevator upper end sand export to pass through
The sand inlet that outer end was arranged obliquely send sand cylinder to be connected to heat exchange container upper end；The heat exchange container lower end is close to elevator one
Side is additionally provided with outer end and is connected to elevator obliquely into the sand-returning pipe of sand hopper, is provided with back sand switch valve on sand-returning pipe.
In this way, molding sand can open sand-returning pipe after exchanging heat in heat exchange container realize back that sand to elevator, is again returned to and changed
Heat container realizes heat exchange, and then realizes and handle the cycle heat exchange of molding sand, until temperature is reduced to meet the requirements and turn off back
Sand switch valve opens the switch valve that shakes out and shakes out realization to the circulation batch sequence cooling treatment of hot sand, guarantees that the heat exchange to hot sand is cooling
Effect.
In molding sand sequencing batch type processing system, elevator includes vertically arranged elevator shell, on elevator shell inner cavity
Lower both ends are provided with sprocket wheel, and upper end sprocket wheel is connected with the elevator motor driven positioned at elevator shell exterior, upper and lower ends
It is arranged with the loop chain in vertical annular on sprocket wheel, is provided with chain bucket on loop chain, when chain bucket moves across after the sprocket wheel of lower end with loop chain
Sand is connect from elevator into sand hopper, sand export shakes out from elevator upper end after the sprocket wheel of upper end.It is promoted in this way using ring chain bucket
Machine can preferably avoid blocking, guarantee that work is smooth.When implementing certainly can also using existing belt elevator or
The existing Structure of hoist such as person's steel wire adhesive tape bucket elevator, which is realized, to be promoted.
It further include dust pelletizing system in molding sand sequencing batch type processing system, dust pelletizing system includes being set to the dedusting of dedusting position
Cover, and and the dedusting fan that is connected with dust excluding hood, dust pelletizing system further includes being connected to removing between dust excluding hood and dedusting fan
Dirt pipeline, cleaning shaft include the dust-collecting and heat exchanging pipeline being set in heat exchange container inner cavity.
In this way, a part, which is arranged, in the distinguished and admirable pipeline of dust pelletizing system enters formation dust-collecting and heat exchanging pipeline in heat exchange container,
It can use dust-collecting and heat exchanging pipeline and molding sand carry out heat exchange, take away one with distinguished and admirable by the dedusting inside dust-collecting and heat exchanging pipeline
The heat of tap sand, therefore compared with existing heat-exchanger rig, under the premise of not increasing additional heat exchange device power, both realizes and remove
Dirt, and dust pelletizing system is utilized to improve heat exchange efficiency, cleaning shaft reaches dedusting and cooling double effects, therefore greatly
It improves to molding sand heat exchange cooling effect.
As optimization, a jigging conveyer, jigging conveyer are correspondingly arranged on positioned at the side in turnover machine mould turnover direction
Outlet and the linking of heat exchange container upper end sand inlet, dust excluding hood includes the conveyer dedusting being correspondingly arranged above jigging conveyer
Cover.Specifically, jigging conveyer includes an angularly disposed delivery chute component, delivery chute component upper end is set to turnover machine
One side-lower in mould turnover direction, vibrator is provided on delivery chute component, and delivery chute member lower is outlet, conveyer dust excluding hood
Covering is arranged above delivery chute component.
In this way, molding sand is poured into jigging conveyer by turnover machine mould turnover, exist by the delivery chute component of jigging conveyer
The conveying to molding sand is realized when vibration, so that the partial heat and dust that molding sand is mingled with can be upper well in vibration processes
Wind-force in the conveyer dust excluding hood of side siphons away, and achievees the effect that preliminary dust removal and takes away heat.Jigging conveyer is using vibration
Mode convey molding sand, the dust excluding hood that cooperation top is arranged enables to the dust being mingled in molding sand when vibration that can be shaken out
And taken away by distinguished and admirable, improve dust removing effects.
It is located at sand inlet lower section adjacent in upper end as optimization, in heat exchange container inner cavity and is horizontally arranged with vibration along inner cavity
Material screen, vibrating is the heat transfer space for being provided with fluid heat transfer pipeline and dust-collecting and heat exchanging pipeline below equal material screen.
In this way, the uniformity of knockout distribution by equal material screen vibrating shakeout is vibrated, can be improved to improve heat transfer effect.
As optimization, vibrating equal material screen includes being transversely mounted in the middle part of heat exchange container inner cavity the arc-shaped arc that raises upward
Shape sieve further includes the shaker screen being mounted on sieve；It is located in the heat exchange container inner cavity inside at the sand inlet of upper end
Be extended have tubular into sand cylinder, into sand cylinder obliquely and outlet face curved screen in the middle part of top setting.
In this way, make into sand cylinder knockout to sieve, during molding sand slides around in the middle part of sieve under leave out by mistake sand,
Preferably it is conducive to improve the uniformity that knockout is distributed in the horizontal direction, preferably to improve heat transfer effect.
As optimization, heat exchange container inner cavity upper end is additionally provided with heat exchange container dust excluding hood, and heat exchange container dust excluding hood upper end is logical
Piping is connected in cleaning shaft.
In this way, heat exchange container dust excluding hood, which can be exchanged, generates upward distinguished and admirable suction inside heat container, so that heat exchange container
Interior knockout with fluid heat transfer pipeline and dust-collecting and heat exchanging pipeline while being exchanged heat, by distinguished and admirable up band from the bottom up
Heat is walked, realizes multiple heat transfer effect, improves heat exchange efficiency；In addition, upward wind can be relied on during knockout is fallen
Stream enables tiny dust in molding sand preferably to be taken away by distinguished and admirable, realizes molding sand type selecting effect, molding sand is subsequent do not have to again into
The processing of the type selectings such as row cleaning, drying improves molding sand and handles whole efficiency.When it is implemented, heat exchange container dust excluding hood is covered in sieve
Top, the upward distinguished and admirable suction that such heat exchange container dust excluding hood generates will preferably can be shaken on sieve upwards through sieve
Molding sand in the dust that is mingled with take away, improve molding sand dust removing effects, while can also preferably cooperate with the vibration of sieve, improve
The uniformity that uniformly distributed effect of the molding sand on sieve, preferably raising molding sand fall, and then preferably improve molding sand and hold in heat exchange
Heat transfer effect in device inner cavity.
As optimization, a dedusting interlayer cavity, two dedusting interlayers are each provided at left and right sides of heat exchange container
More spaced dust-collecting and heat exchanging pipelines arranged side by side are provided with and communicated between cavity, two dedusting interlayer cavitys respectively connect outward
It passes in cleaning shaft；The left and right sides of heat exchange container is also each provided with a heat exchanging fluid interlayer cavity, two heat exchanging fluids
More spaced fluid heat transfer pipelines arranged side by side are provided with and communicated between interlayer cavity, two heat exchanging fluid interlayer cavitys are respectively
Heat exchanging fluid cooling device is connected to by pipeline outward.
Distinguished and admirable be introduced into heat exchange container inner cavity of dust pelletizing system is carried out in this way, the structure has can be well realized
It exchanges heat to improve the heat exchanger effectiveness of molding sand.Specifically, being each provided with a dedusting interlayer at left and right sides of heat exchange container
Then cavity, dedusting air-flow enter in heat exchange container inner cavity by dedusting interlayer cavity through excessive dirt heat exchange pipeline of eradicating
It exchanges heat；In conjunction with the heat exchange of more fluid heat transfer pipelines, changing for the molding sand fallen in heat exchanging container intracavity is greatlyd improve
Thermal effect.
Further, heat exchange container horizontal cross-section is rectangle, is more favorable for each interlayer cavity and dust-collecting and heat exchanging pipe in this way
The arrangement in road and fluid heat transfer pipeline improves space efficiency utilization.
As optimization, dedusting interlayer cavity is located on the outside of heat exchanging fluid interlayer cavity, and in the middle part of dedusting interlayer cavity
It is respectively connected in cleaning shaft outward by one in the plenum chamber of outside taper type.
In this way, the plenum chamber of setting enters in dust-collecting and heat exchanging pipeline after making dedusting is distinguished and admirable plenum chamber can be leaned on to rectify,
Reduce pneumatic noise, at the same be conducive to dedusting it is distinguished and admirable in dust converge sedimentation in plenum chamber and dedusting interlayer cavity, it is sharp
In the subsequent air-flow velocity of raising.Dedusting with interlayer cavity be set to outside can be convenient setting cleaning its in dust accumulation.
Further, lower end offers dedusting cleaning door on the outside of dedusting interlayer cavity, is easy to open cleaning dust.
Further, the heat exchanging fluid interlayer cavity upper end of heat exchange container side is connected outward and is connected by upward pipeline
It is connected to heat exchanging fluid cooling device, the heat exchanging fluid interlayer cavity lower end of the heat exchange container other side is connected outward by downward pipeline
Out and it is connected to heat exchanging fluid cooling device.Facilitate the connection of pipeline to install in this way, while being conducive to the whole circulation of heat exchanging fluid
Flowing.
As optimization, the dust-collecting and heat exchanging pipeline is to be in tilted layout, and distinguished and admirable inside direction diagonally downward and pipeline
Flow direction is consistent.
In this way, can prevent the dust being mingled in distinguished and admirable from accumulating in dust-collecting and heat exchanging pipeline causes blocking or reduction dedusting
Distinguished and admirable flow velocity.
Further, the dust-collecting and heat exchanging pipeline and fluid heat transfer pipeline be along horizontal arranged in rows, and respectively
It is correspondingly arranged to be multiple rows of, fluid heat transfer pipeline edge and the opposite direction of dust-collecting and heat exchanging pipeline along the arrangement of short transverse uniform intervals
It is in tilted layout to be formed and interlock, and every exclusion dirt heat exchange pipeline and fluid heat transfer pipeline middle position are intervening portion.In this way, pipeline
Being in tilted layout can accumulate to avoid knockout in pipeline external surface, while the pipeline of alternating inclinations arrangement can also fall to avoid guidance
Sand is migrated toward same direction, therefore can better ensure that the uniformity that molding sand falls in heat exchange container, preferably to improve heat
Exchange efficiency.
As optimization, the dust-collecting and heat exchanging pipeline and fluid heat transfer pipeline external surface are respectively arranged at intervals with aluminum fin-stock.
The heat exchanger effectiveness with knockout can be preferably improved in this way.
Further, the aluminum fin-stock of dust-collecting and heat exchanging pipeline and fluid heat transfer pipeline external surface respectively along pipeline front and rear sides to
Outer lug formed and be obliquely installed in the same direction with pipeline (when specific implementation aluminum fin-stock tilt angle be greater than place pipeline tilt angle with
Conducive to molding sand landing), every aluminum fin-stock for eradicating dirt heat exchange pipeline has vertical right on the staggered fluid heat transfer pipeline of correspondence
The aluminum fin-stock answered, and the vertical projection of the aluminum fin-stock lower half of each dust-collecting and heat exchanging pipeline and the corresponding layer fluid heat exchange pipeline
On aluminum fin-stock lower half vertical projection have one coincidence part.In this way aluminum fin-stock prolong front-rear direction be extended can
Heat exchanger effectiveness is also improved with the contact effect for falling molding sand to improve it, while corresponding aluminum fin-stock is erecting on adjacent pipeline
Dislocation overlapping arrangement upwards enables on the aluminum fin-stock of each dust-collecting and heat exchanging pipeline the molding sand that slides to fall to lower section corresponding
Aluminum fin-stock surface on fluid heat transfer pipeline, so that molding sand is capable of forming the successively left of class zigzag in heat exchange container inner cavity
Right deflecting is staggeredly fallen.In this way, dramatically improve residence time of the molding sand in heat exchange container, also high degree raising type
The contact heat-exchanging efficiency of sand and aluminum fin-stock, so that molding sand heat exchange cooling effect is greatly improved.
Implement simply, to can be realized the circulation sequencing batch type cooling treatment to molding sand, molding sand is cold in conclusion the present invention has
But effect and advantage having excellent cooling efficiency.
Detailed description of the invention
When Fig. 1 is a kind of present invention implementation, the structural schematic diagram of the molding sand sequencing batch type processing system of use.
Fig. 2 is the structural schematic diagram of an independent heat exchange container in Fig. 1, the structural representation of display portion aluminum fin-stock in figure.
Fig. 3 is the horizontal cross of Fig. 2, does not show aluminum fin-stock structure in figure.
Fig. 4 is individually to show that molding sand slides the schematic diagram of process between aluminum fin-stock in Fig. 1.
Specific embodiment
When implementing below with reference to a kind of present invention, the molding sand sequencing batch type processing system of use and its attached drawing to the present invention make into
The detailed description of one step.
A kind of cavityless casting molding sand sequencing batch type circulating cooling processing method, including use and molding sand is allowed to enter in heat exchange container
The cooling step of Hot swapping mode is carried out with heat exchanging fluid pipeline, it is characterized in that, allow molding sand to enter heat exchange container in bulk
In, and by elevator by the molding sand after realizing first time heat exchange process in heat exchange container during falling from heat exchange container
Outside is promoted to heat exchange container upper end again, and repetition enters in heat exchange container and heat exchanging fluid pipeline carries out Hot swapping, realizes
Cycle heat exchange processing to molding sand is realized at cooling to the circulation batch sequence of hot sand until temperature is reduced to shake out after meeting the requirements
Reason.
The circulating cooling of molding sand is handled in this way, being repeatedly lifted up and realizing by elevator, greatly improves cooling effect.
It is particularly suitable for the situation that molding sand treating capacity is big but produces without continuous processing.
It further include that the part cleaning shaft of dust pelletizing system is set to formation dedusting in heat exchange container to change when this method is implemented
Heat pipeline and the molding sand of process exchange heat, by dedusting distinguished and admirable the step of taking away molding sand heat.
In this way, introduce dust-collecting and heat exchanging pipeline in heat exchange container, is exchanged heat by dedusting is distinguished and admirable and take away part molding sand
Heat realizes dual-cooled, greatly improves molding sand heat exchange cooling effect.
In present embodiment, this method uses molding sand sequencing batch type processing system as shown in Figs 1-4 and realizes, the molding sand
Sequencing batch type processing system, including turnover machine 1 and heat-exchanger rig, heat-exchanger rig includes a heat exchange container 2, inside heat exchange container 2
It is provided with the fluid heat transfer pipeline 3 for heat exchange, heat exchanging fluid pipeline 3 and the heat exchanging fluid being set to outside heat exchange container 2 are cold
But device 4 is connected to and circulates for the heat exchanging fluid in it, and 1 mould turnover direction side of turnover machine and 2 upper end of heat exchange container are into sand
Mouthful linking is provided with band in the middle part of 2 lower end of heat exchange container and shakes out the sand export 5 of switch valve；It wherein, further include dust pelletizing system, dedusting
System includes the dust excluding hood for being set to dedusting position, and and the dedusting fan 6 that is connected with dust excluding hood, dust pelletizing system further include connecting
The cleaning shaft 7 between dust excluding hood and dedusting fan is passed through, cleaning shaft includes that the dedusting being set in heat exchange container inner cavity is changed
Heat pipeline 8.When implementation, dedusting fan outlet side is connected with dust-removal cloth-bag constitutes bag-type dust removal system.
In this way, a part, which is arranged, in the distinguished and admirable pipeline of dust pelletizing system enters formation dust-collecting and heat exchanging pipeline in heat exchange container,
It can use dust-collecting and heat exchanging pipeline and molding sand carry out heat exchange, take away one with distinguished and admirable by the dedusting inside dust-collecting and heat exchanging pipeline
The heat of tap sand, therefore compared with existing heat-exchanger rig, under the premise of not increasing additional heat exchange device power, both realizes and remove
Dirt, and dust pelletizing system is utilized to improve heat exchange efficiency, cleaning shaft reaches dedusting and cooling double effects, therefore greatly
It improves to molding sand heat exchange cooling effect.
Wherein, the side positioned at 1 mould turnover direction of turnover machine is correspondingly arranged on a jigging conveyer 9, and jigging conveyer 9 goes out
Mouth and the linking of heat exchange container upper end sand inlet, dust excluding hood includes the conveyer dust excluding hood being correspondingly arranged above jigging conveyer
10.Specifically, jigging conveyer includes an angularly disposed delivery chute component, delivery chute component upper end is set to turnover machine
One side-lower in mould turnover direction, vibrator is provided on delivery chute component, and delivery chute member lower is outlet, conveyer dust excluding hood
Covering is arranged above delivery chute component.
In this way, molding sand is poured into jigging conveyer by turnover machine mould turnover, exist by the delivery chute component of jigging conveyer
The conveying to molding sand is realized when vibration, so that the partial heat and dust that molding sand is mingled with can be upper well in vibration processes
Wind-force in the conveyer dust excluding hood of side siphons away, and achievees the effect that preliminary dust removal and takes away heat.Jigging conveyer is using vibration
Mode convey molding sand, the dust excluding hood that cooperation top is arranged enables to the dust being mingled in molding sand when vibration that can be shaken out
And taken away by distinguished and admirable, improve dust removing effects.
Wherein, the heat exchanging fluid in the heat exchanging fluid pipeline 3 is gaseous refrigerant, the heat exchanging fluid cooling device 4
Including concatenated compressor of air conditioner and A/C evaporator, compressor of air conditioner is used for gaseous refrigerant boil down to liquid, and air-conditioning steams
Hair device is used to convert the refrigerant of liquid to the gaseous state of low temperature.
In this way using gaseous refrigerant as heat exchanging fluid, the mode phase of the mode of this air cooling and existing conventional water cooling
Than gaseous refrigerant rapidly can cool down and take away by compressor of air conditioner and A/C evaporator in heat exchanging fluid cooling device
Heat can recycle after fast cooling, greatly improve heat exchange efficiency, in this way, being used as and changing with use cooling water
The water-cooling pattern of hot fluid is compared, and the cooling of heat exchanging fluid is influenced smaller by temperature.It is set to be particularly suitable for being difficult to fastly in cooling water
The high temperature area of prompt drop temperature processing uses.
Wherein, include the heat exchange container of a pre- colod-application heat exchange container and a cooling in the heat-exchanger rig, turn over
1 mould turnover direction side of punch-out equipment and pre- colod-application heat exchange container upper end sand inlet linking, pre- colod-application heat exchange container lower end sand export
Side is additionally provided with the bypass of outer end obliquely and goes out sandpipe 11, bypasses out sandpipe 11 and cooling heat exchange container upper end sand inlet
Linking, cooling heat exchange container lower end sand export is for shaking out to lost foam casting boxcar；In pre- colod-application heat exchange container
Heat exchanging fluid pipeline is recycled with heat exchanging fluid cooling device again after being connected to the heat exchanging fluid pipeline in cooling heat exchange container
Connection.
It is used in series in this way, using two sets of heat exchange containers arranged side by side in heat-exchanger rig, a realization pre-cooling, a realization
It is cooling, greatly improve cooling effect and cooling treatment efficiency.It when implementation, bypasses out and is also equipped with switch valve on sandpipe, make
It can single heat exchange container exclusive use.
Wherein, the charging side of heat exchange container is also vertically provided with an elevator 12 side by side in the heat-exchanger rig, mentions
It rises 12 lower end of machine to be provided with for the elevator into sand into sand hopper 13,12 upper end sand export of elevator is arranged obliquely by outer end
The sand inlet for sending sand cylinder 14 to be connected to heat exchange container upper end.
In this way, promoting laggard sand to heat exchange container using elevator, heat exchange container and turnover machine are set to together
One ground makes it be conducive to layout installation, saves space.
Wherein, elevator 12 includes vertically arranged elevator shell, and elevator shell inner cavity upper and lower ends are provided with chain
Wheel, upper end sprocket wheel and the elevator motor 15 positioned at elevator shell exterior are drivingly connected, and are arranged on the sprocket wheel of upper and lower ends
In the loop chain 16 of vertical annular, it is provided with chain bucket on loop chain 16, from elevator when chain bucket moves across after the sprocket wheel of lower end with loop chain
Sand is connect into sand hopper, sand export shakes out from elevator upper end after the sprocket wheel of upper end.Circular chain bucket hoister, Neng Gougeng are used in this way
Blocking is avoided well, guarantees that work is smooth.Existing belt elevator or steel wire rubber can also be used when implementing certainly
The existing Structure of hoist such as band bucket elevator, which are realized, to be promoted.
Wherein, 2 lower end of heat exchange container close to elevator side be additionally provided with outer end be connected to obliquely elevator into
The sand-returning pipe 17 of sand hopper is provided with back sand switch valve on sand-returning pipe 17.In this way, molding sand can be opened after exchanging heat in heat exchange container
Sand-returning pipe realizes back that sand again returns to heat exchange container and realize heat exchange to elevator, and then realizes to the cycle heat exchange of molding sand
Reason guarantees heat transfer effect until temperature is reduced to meet the requirements and turns off back sand switch valve.
Wherein, upper end sand inlet lower section adjacent is located in heat exchange container inner cavity and is horizontally arranged with vibration homocline along inner cavity
Sieve, vibrating is the heat transfer space for being provided with fluid heat transfer pipeline 3 and dust-collecting and heat exchanging pipeline 8 below equal material screen.
In this way, the uniformity of knockout distribution by equal material screen vibrating shakeout is vibrated, can be improved to improve heat transfer effect.
Wherein, vibrating equal material screen includes being transversely mounted in the middle part of heat exchange container inner cavity the arc-shaped sieve bend that raises upward
Net 18 further includes the shaker screen 19 being mounted on sieve；It is located in the heat exchange container inner cavity inside at the sand inlet of upper end
Be extended have tubular into sand cylinder 20, obliquely and the top setting of the outlet middle part of face curved screen 18 into sand cylinder 20.
In this way, make into sand cylinder knockout to sieve, during molding sand slides around in the middle part of sieve under leave out by mistake sand,
Preferably it is conducive to improve the uniformity that knockout is distributed in the horizontal direction, preferably to improve heat transfer effect.
Wherein, heat exchange container inner cavity upper end is additionally provided with heat exchange container dust excluding hood 21, and 21 upper end of heat exchange container dust excluding hood is logical
Piping is connected in cleaning shaft 7.
In this way, heat exchange container dust excluding hood, which can be exchanged, generates upward distinguished and admirable suction inside heat container, so that heat exchange container
Interior knockout with fluid heat transfer pipeline and dust-collecting and heat exchanging pipeline while being exchanged heat, by distinguished and admirable up band from the bottom up
Heat is walked, realizes multiple heat transfer effect, improves heat exchange efficiency；In addition, upward wind can be relied on during knockout is fallen
Stream enables tiny dust in molding sand preferably to be taken away by distinguished and admirable, realizes molding sand type selecting effect, molding sand is subsequent do not have to again into
The processing of the type selectings such as row cleaning, drying improves molding sand and handles whole efficiency.When it is implemented, heat exchange container dust excluding hood is covered in sieve
Top, the upward distinguished and admirable suction that such heat exchange container dust excluding hood generates will preferably can be shaken on sieve upwards through sieve
Molding sand in the dust that is mingled with take away, improve molding sand dust removing effects, while can also preferably cooperate with the vibration of sieve, improve
The uniformity that uniformly distributed effect of the molding sand on sieve, preferably raising molding sand fall, and then preferably improve molding sand and hold in heat exchange
Heat transfer effect in device inner cavity.It is located at heat transfer space lower part when implementation, in heat exchange container and is located at 5 top position of sand export and is arranged
The blast pipe 22 for thering is outer end opening to be bent upwards, so that heat exchange container dust excluding hood suction air is used so that being formed under in heat transfer space
Up distinguished and admirable takes away heat, to realize above-mentioned multiple heat transfer effect；The blast pipe being bent upwards simultaneously can be to avoid knockout
It blows out from blast pipe.
Wherein, the left and right sides of heat exchange container 2 is each provided with a dedusting interlayer cavity 23, two dedustings interlayer sky
Be provided with and communicated with more spaced dust-collecting and heat exchanging pipelines 8 arranged side by side between chamber 23, two dedustings with interlayer cavity 23 respectively to
It is connected in cleaning shaft 7 outside；The left and right sides of heat exchange container 2 is also each provided with a heat exchanging fluid interlayer cavity 24, and two
More spaced fluid heat transfer pipelines 3 arranged side by side, two heat exchanging fluids are provided with and communicated between heat exchanging fluid interlayer cavity 24
Interlayer cavity 24 is respectively connected to heat exchanging fluid cooling device 4 by pipeline outward.
Distinguished and admirable be introduced into heat exchange container inner cavity of dust pelletizing system is carried out in this way, the structure has can be well realized
It exchanges heat to improve the heat exchanger effectiveness of molding sand.Specifically, being each provided with a dedusting interlayer at left and right sides of heat exchange container
Then cavity, dedusting air-flow enter in heat exchange container inner cavity by dedusting interlayer cavity through excessive dirt heat exchange pipeline of eradicating
It exchanges heat；In conjunction with the heat exchange of more fluid heat transfer pipelines, changing for the molding sand fallen in heat exchanging container intracavity is greatlyd improve
Thermal effect.
Wherein, 2 horizontal cross-section of heat exchange container is rectangle, be more favorable for so each interlayer cavity and dust-collecting and heat exchanging pipeline and
The arrangement of fluid heat transfer pipeline improves space efficiency utilization.
Wherein, dedusting interlayer cavity 23 is located at 24 outside of heat exchanging fluid interlayer cavity, and dedusting is in interlayer cavity 23
Portion is respectively connected in cleaning shaft 7 by one in the plenum chamber 25 of outside taper type outward.In this way, the plenum chamber of setting
So that dedusting it is distinguished and admirable can lean on plenum chamber rectify after enter in dust-collecting and heat exchanging pipeline, reduce pneumatic noise, while be conducive to dedusting
Dust in distinguished and admirable converges sedimentation in plenum chamber and dedusting interlayer cavity, is conducive to improve subsequent air-flow velocity.Dedusting is used
Interlayer cavity, which is set to outside, can be convenient its interior dust accumulation of setting enabling cleaning.Meanwhile the plenum chamber of setting be smaller diameter end to
Outer taper type, can preferably with cleaning shaft linking be connected to, avoided wind section become larger suddenly generate excessively be vortexed stream
And enable dust preferably preliminary sedimentation in dedusting interlayer cavity, it enters in dust-collecting and heat exchanging pipeline and makes to avoid dust
At blocking and reduce heat exchanger effectiveness.
Wherein, dedusting offers dedusting cleaning door 26 with 23 outside lower end of interlayer cavity, is easy to open cleaning dust.
Wherein, 24 upper end of heat exchanging fluid interlayer cavity of 2 side of heat exchange container is connected outward and is connected by upward pipeline
Be connected to heat exchanging fluid cooling device 4,24 lower end of heat exchanging fluid interlayer cavity of the heat exchange container other side by downward pipeline to
It connects outside and is connected to heat exchanging fluid cooling device 4.Facilitate the connection of pipeline to install in this way, while being conducive to the entirety of heat exchanging fluid
It circulates.
Wherein, the dust-collecting and heat exchanging pipeline 8 is to be in tilted layout, and the distinguished and admirable flowing inside direction diagonally downward and pipeline
Direction is consistent.Blocking or reduction is caused to remove in this way, can prevent the dust being mingled in distinguished and admirable from accumulating in dust-collecting and heat exchanging pipeline
The distinguished and admirable flow velocity of dirt.
Wherein, the dust-collecting and heat exchanging pipeline 8 and fluid heat transfer pipeline 3 be along horizontal arranged in rows, and respectively right
Should be set as arranging along short transverse uniform intervals is multiple rows of, 3 edge of fluid heat transfer pipeline and the opposite direction of dust-collecting and heat exchanging pipeline 8
It is in tilted layout to be formed and interlock, and every exclusion dirt heat exchange pipeline and fluid heat transfer pipeline middle position are intervening portion.In this way, pipeline
Being in tilted layout can accumulate to avoid knockout in pipeline external surface, while the pipeline of alternating inclinations arrangement can also fall to avoid guidance
Sand is migrated toward same direction, therefore can better ensure that the uniformity that molding sand falls in heat exchange container, preferably to improve heat
Exchange efficiency.
Wherein, the dust-collecting and heat exchanging pipeline 8 and 3 outer surface of fluid heat transfer pipeline are respectively arranged at intervals with aluminum fin-stock 27.
The heat exchanger effectiveness with knockout can be preferably improved in this way.
Wherein, the aluminum fin-stock 27 of participation Fig. 4, dust-collecting and heat exchanging pipeline and fluid heat transfer pipeline external surface is respectively before and after pipeline
Two sides outwardly convex formed and be obliquely installed in the same direction with pipeline (when specific implementation aluminum fin-stock tilt angle be greater than place pipeline inclination
Angle is in favor of molding sand landing), every aluminum fin-stock for eradicating dirt heat exchange pipeline has on the staggered fluid heat transfer pipeline of correspondence
Vertical corresponding aluminum fin-stock, and the vertical projection of the aluminum fin-stock lower half of each dust-collecting and heat exchanging pipeline and the corresponding layer fluid are changed
The vertical projection of the lower half of aluminum fin-stock on heat pipeline has the part of a coincidence.Aluminum fin-stock prolongs front-rear direction extension in this way
Being arranged can be improved it and also improves heat exchanger effectiveness, while corresponding aluminium on adjacent pipeline with the contact effect for falling molding sand 28
Fin vertically misplaces overlapping arrangement, and the molding sand that slides on the aluminum fin-stock of each dust-collecting and heat exchanging pipeline is fallen to down
Aluminum fin-stock surface on the corresponding fluid heat transfer pipeline in side, so that molding sand is capable of forming class in a zigzag in heat exchange container inner cavity
The deflecting of successively left and right staggeredly fall.In this way, dramatically improve residence time of the molding sand in heat exchange container, also very big journey
Degree improves the contact heat-exchanging efficiency of molding sand and aluminum fin-stock, so that molding sand heat exchange cooling effect is greatly improved.
In this way, vanishing-die casting moulding-sand enters jigging conveyer through turnover machine, in vibrating transportation when above system works
The dust preliminarily taking away heat under the distinguished and admirable suction that machine vibration and upper conveyor dust excluding hood provide and being mingled with, reaches
Preliminary dust removal and cooling effect.Then elevator of the molding sand after jigging conveyer by pre- colod-application heat exchange container enters
The heat exchange container of first preheating provides on the curved screen of heat exchange container upper end by vibration and heat exchange container dust excluding hood
Distinguished and admirable suction, take away heat and dust again；The special construction of curved screen, which combines, simultaneously vibrates and aspirates wind-force, being capable of band
Ejector half sand more uniformly slides from curved screen；By upward wind-force band when molding sand is in vacant state in dropping process
Heat is walked, is in and dust-collecting and heat exchanging pipeline and fluid heat transfer pipeline and when the aluminum fin-stock contact condition on the two surface, is carried out
Cooling is realized in heat exchange, and the cooling effect of MULTIPLE DYNAMIC has been achieved, and the pipeline that dust pelletizing system is utilized becomes cooling source
Greatly improve heat exchanger effectiveness.The special construction setting of aluminum fin-stock also improves the contact heat-exchanging effect with molding sand simultaneously.
After molding sand drops out heat transfer space downwards, can also as desired by the control to switch valve, make its from sand-returning pipe return sand to
Elevator realizes cycle heat exchange processing, until be cooled to be suitble to after open sand export again and shake out, this sample loading mode is particularly suitable for interval
Sequencing batch type molding sand cooling treatment.When needing to realize continuous processing and treating capacity is larger that single heat exchange container is caused to be unable to satisfy heat exchange
When processing, the sand-returning pipe and sand export of pre- colod-application heat exchanger can also be closed, it is opened and bypasses out second heat exchange of sandpipe connection
Container (heat exchange container of i.e. above-mentioned cooling) works together the heat exchange demand for meeting continous way processing by two heat exchange containers.
Therefore this system has heat exchange efficiency high, molding sand treating capacity is big and the characteristics of can be realized a variety of heat exchange modes.
Claims (8)
1. a kind of cavityless casting molding sand sequencing batch type circulating cooling processing method, including neutralized using allowing molding sand to enter heat exchange container
The cooling step of heat exchanging fluid pipeline progress Hot swapping mode, which is characterized in that allow molding sand to enter in heat exchange container in bulk,
And rely on elevator by the molding sand after realizing first time heat exchange process in heat exchange container during falling outside heat exchange container
Portion is promoted to heat exchange container upper end again, and repetition enters in heat exchange container and heat exchanging fluid pipeline carries out Hot swapping, realization pair
The cycle heat exchange of molding sand is handled, until temperature is reduced to the circulation batch sequence cooling treatment shaked out and realized to hot sand after meeting the requirements；
It further include that the part cleaning shaft of dust pelletizing system is set to the type that dust-collecting and heat exchanging pipeline and process are formed in heat exchange container
Sand exchanges heat, by dedusting distinguished and admirable the step of taking away molding sand heat；
This method is using molding sand sequencing batch type processing system below realization, the molding sand sequencing batch type processing system, including mould turnover
Machine and heat exchange container, heat exchange container are internally provided with the heat exchanging fluid pipeline for heat exchange, heat exchanging fluid pipeline and are set to
Heat exchanging fluid cooling device outside heat exchange container is connected to and circulates for heat exchanging fluid, is provided with band in the middle part of heat exchange container lower end
Shake out the sand export of switch valve；The charging side of heat exchange container is also vertically provided with an elevator side by side, and elevator lower end is set
It is equipped with for into the elevator of sand into sand hopper, elevator upper end sand export send sand cylinder to be connected to change by what outer end was arranged obliquely
The sand inlet of heat container upper end；The heat exchange container lower end is additionally provided with outer end close to elevator side and is connected to promotion obliquely
Machine is provided with back sand switch valve on sand-returning pipe into the sand-returning pipe of sand hopper；
It further include dust pelletizing system, dust pelletizing system includes the dust excluding hood for being set to dedusting position, and the dedusting being connected with dust excluding hood
Blower, dust pelletizing system further include the cleaning shaft being connected between dust excluding hood and dedusting fan, and cleaning shaft includes being set to change
Dust-collecting and heat exchanging pipeline in heat container inner cavity；
A jigging conveyer, jigging conveyer outlet and heat exchange container are correspondingly arranged on positioned at the side in turnover machine mould turnover direction
The linking of upper end sand inlet, dust excluding hood includes the conveyer dust excluding hood being correspondingly arranged above jigging conveyer.
2. cavityless casting as described in claim 1 molding sand sequencing batch type circulating cooling processing method, which is characterized in that heat exchange is held
It is located at sand inlet lower section adjacent in upper end in device inner cavity and is horizontally arranged with the equal material screen of vibration along inner cavity, vibrating is to set below equal material screen
It is equipped with the heat transfer space of heat exchanging fluid pipeline and dust-collecting and heat exchanging pipeline.
3. cavityless casting as claimed in claim 2 molding sand sequencing batch type circulating cooling processing method, which is characterized in that vibration is equal
Material screen includes being transversely mounted in the middle part of heat exchange container inner cavity the arc-shaped curved screen that raises upward, and further includes being mounted on sieve
On shaker screen；Be located in the heat exchange container inner cavity extend internally at the sand inlet of upper end be provided with tubular into sand cylinder,
Into sand cylinder, top is arranged obliquely and in the middle part of outlet face curved screen.
4. cavityless casting as claimed in claim 2 molding sand sequencing batch type circulating cooling processing method, which is characterized in that heat exchange is held
Device inner cavity upper end is additionally provided with heat exchange container dust excluding hood, and heat exchange container dust excluding hood upper end is connected in cleaning shaft by pipeline.
5. cavityless casting as described in claim 1 molding sand sequencing batch type circulating cooling processing method, which is characterized in that heat exchange is held
It is each provided with a dedusting interlayer cavity at left and right sides of device, two dedustings are with being provided with and communicated with more simultaneously between interlayer cavity
Spaced dust-collecting and heat exchanging pipeline is arranged, two dedustings are respectively connected in cleaning shaft outward with interlayer cavity；Heat exchange container
The left and right sides be also each provided with a heat exchanging fluid interlayer cavity, be provided with and communicated between two heat exchanging fluid interlayer cavitys more
Spaced heat exchanging fluid pipeline, two heat exchanging fluid interlayer cavitys are respectively connected to heat exchange stream by pipeline outward to root side by side
Body cooling device.
6. cavityless casting as claimed in claim 5 molding sand sequencing batch type circulating cooling processing method, which is characterized in that dedusting is used
Interlayer cavity is located on the outside of heat exchanging fluid interlayer cavity, and is in outside taper type by one in the middle part of dedusting interlayer cavity
Plenum chamber is respectively connected in cleaning shaft outward.
7. cavityless casting as claimed in claim 6 molding sand sequencing batch type circulating cooling processing method, which is characterized in that described to remove
Dirt heat exchange pipeline is to be in tilted layout, and direction diagonally downward is consistent with the distinguished and admirable flow direction inside pipeline.
8. cavityless casting as claimed in claim 6 molding sand sequencing batch type circulating cooling processing method, which is characterized in that described to remove
Dirt heat exchange pipeline and heat exchanging fluid pipeline external surface are respectively arranged at intervals with aluminum fin-stock.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CH555283A (en) * | 1972-05-01 | 1974-10-31 | Fischer Ag Georg | DEVICE FOR COOLING OR DRYING GOODS TO SHOOT. |
| JP3329757B2 (en) * | 1999-02-08 | 2002-09-30 | 新東工業株式会社 | Method and apparatus for reclaiming foundry sand |
| JP3643095B2 (en) * | 2002-07-31 | 2005-04-27 | 株式会社前川製作所 | Mold refrigeration equipment |
| CN2778431Y (en) * | 2005-01-07 | 2006-05-10 | 鞍钢附属企业公司烧结安装公司 | Casting hot sand treating and sand box automatic conveying system |
| CN102430708B (en) * | 2011-12-20 | 2013-11-13 | 新疆维吾尔自治区第三机床厂 | Moulding sand cooling dedusting tower as well as casting moulding sand processing device and method |
| CN105458164B (en) * | 2016-01-08 | 2017-06-20 | 山东金璞新材料有限公司 | A kind of quick roasting regeneration system of energy-saving filler cooled casting model powder |
| CN205519477U (en) * | 2016-03-08 | 2016-08-31 | 中机中联工程有限公司 | Old sand thermal reclamation system |
| CN106111889B (en) * | 2016-08-31 | 2018-05-18 | 中机中联工程有限公司 | A kind of high temperature regeneration Sand Cooling System and exhaust heat recovering method |
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Effective date of registration: 20210607 Address after: 400084 No. 2, Magnesium Bridge Road, Area A, Jianqiao Industrial Park, Dadukou District, Chongqing Patentee after: CHONGQING IRON & STEEL INSTITUTE Co.,Ltd. Address before: Three village 400080 Dadukou District of Chongqing weir building 1 No. 1 Patentee before: Chongqing Iron and Steel (Group) Co.,Ltd. |