CN108620529A - The method and its regenerative system of the wet method combined regeneration old sand of dry method heat - Google Patents

Abstract

A kind of method and its regenerative system of the wet method combined regeneration old sand of dry method heat, can be used for Foundry Production.Alicyclic organic solidification alkalescent phenol resin old sand is first put into the resin film for removing sand grain surface in centrifugal old-sand regenerating machine as possible, sand is placed in progress hot water cleaning in used sand regenerating machine again, under high temperature and strong stirring effect, the cull of sand grain surface is soluble in water.The sewage of discharge filters out resin and fine powder therein through filter, and washed-out sand is reused in after Yu Shui heating.It is sent into vacuum drier drying after clean hot recycling sand dehydration and can be used as fresh sand use after vibrating screen sieves, separately uses it for anything else after the resin processing filtered out.As washed-out sand water after using the spent hot water that cooling metallurgical electric furnace generates to use heat pump in regenerative process.The present invention can not only produce high-quality reclaimed sand but also realize sewage zero-discharge, avoid noxious fume caused by thermal reclamation resin sand and pollute, energy conservation and environmental protection.

Description

The method and its regenerative system of the wet method combined regeneration old sand of dry method heat

Technical field

The present invention relates to the regenerating used methods and sand reclaiming plant in Foundry Production

Background technology

Maximum pollution sources are Modeling Materials in Foundry Production, mainly old sand.Cast used sand carries out regeneration can be big Amplitude reduces antiquated sand pollution, reduces production cost, improves Business Economic Benefit.It is to implement sustainable development, implements Green foundry Important measure.

It is widely used using alkalescent phenol resin as binder in recent years in Foundry Production especially in casting production Alkalescent phenol resin sand moulding.Compared with furan resin-sand, alkalescent phenol resin sand has many advantages, such as：(1) resin middle reaches It is low from formaldehyde, it is environmentally friendly.(2) resin and curing agent are free of the harmful elements such as nitrogen phosphate and sulfur.(3) casting is seldom generated and is split The defects of line, sand washing, vein.(4) gas forming amount is small and raising rate is shallower.It is promoted in Foundry Production especially casting production Alkalescent phenol resin sand, it is advantageous to improve operation environment, improve casting quality.

There are mainly two types of methods for the regenerating used of country's alkalescent phenol resin sand (hereinafter referred to as alkali phenolic aldehyde sand) at present：When Dry reclamation is wrapped in the failed inertia film stripping of sand grain surface using the methods of mechanical impact, rubbing, vibration rubbing handle Get off to make reclaimed sand, for substituting fresh sand coremaking moulding.It facts have proved dry reclamation for alkali phenolic aldehyde old sand effect not It is good, the main reason is that：(1) resin film of alkali phenolic aldehyde old sand sand grain surface has toughness and hygroscopicity at normal temperatures, when aqueous It is difficult to effectively remove with general dry reclamation method, demoulding rate is very low when amount is more than 1%.(2) in ester solidification alkali phenolic aldehyde old sand Curing agent alicyclic organic with dry reclamation be difficult that removal is clean, remaining alicyclic organic can be such that reclaimed sand pot life shortens, sand mold Intensity declines.(3) alkali metal compound in alkali phenolic aldehyde old sand is mostly present in resin film, and demoulding rate is low to lead to reclaimed sand The middle many alkali metal compounds of residual, seriously affect the refractoriness of reclaimed sand.Since the alkali phenolic aldehyde reclaimed sand of dry reclamation meets Not production requirement, most Foundry Works turn to using hot method come regenerating alkali phenolic aldehyde old sand, i.e., using the flammable feature of resin alkali The inert coating burn-up of the old sand grain surface of phenolic aldehyde becomes reclaimed sand.《Foundry engieering》12nd periodical has carried Ma Xiaofeng's within 2010《Fat Cure application of the alkaline phenol formaldehyde self-hardening resin on reclaimed sand》Paper discloses the thermal reclamation method of alkali phenolic aldehyde sand in literary.Heat Method Regenerated energy is effectively removed alkalescent phenol resin and alicyclic organic in old sand, and reclaimed sand quality is far above dry reclamation sand Quality, alternative fresh sand reduce the environmental pollution caused by old sand for producing.But there is also defects for this method：1、 Still remain a small amount of alkali metal compound in reclaimed sand, can accumulate gradually, cause during reclaimed sand is repeatedly circulated Reclaimed sand quality declines.2, a large amount of fuel need to be consumed, reclaimed sand cost is increased.3, maximum defect is in regenerating used process In will produce a large amount of pernicious gases and noxious material seriously pollutes environment.

Since, containing there are many organic matters such as phenol, formaldehyde, alicyclic organics, sand grain surface is special in the resin film of alkali phenolic aldehyde old sand It is not that the chlorides such as sodium chloride, magnesium chloride are contained on sea sand surface widely used in casting production, some oxygen is also mixed in old sand Change the particles such as iron, so containing a large amount of carbon dioxide, nitrogen oxides, hydrogen chloride in the flue dust caused by old sand burning process The dust of the equal compositions such as pernicious gases and uncombusted carbon residue, iron oxide.It is known that it is micro- to exist concurrently with carbon particulate, iron oxide Under conditions of grain and chloride, as flue dust temperature declines, the carbon residue and chloride in flue dust are under the catalytic action of iron oxide Dioxin, furans organic poison can be synthesized in 200 DEG C -400 DEG C of temperature range, harm caused by these harmful substances is remote Far more than old sand itself to the harm caused by environment.Especially dioxin, furans organic poison its toxicity compare arsenic oxide arsenoxide (arsenic) is also 1000 times big, nature it is highly stable it is not degradable it is solvable enter fat, into human body after can long-term accumulation teratogenesis, Level-one carcinogen is classified as by World Health Organization.

Invention content

It is old that the present invention provides a kind of dry method, the wet method combined regenerating alkali phenolic aldehyde of heat in view of the above-mentioned problems existing in the prior art The method of sand and the regenerating used system for realizing this method.This method is to utilize alkalescent phenol resin and its curing agent alicyclic organic all The characteristics of being dissolved in water is washed using wet method and is regenerated to alkali phenolic aldehyde old sand.Water consumption is reduced in order to improve washed-out sand efficiency And sewage load, first old sand is tentatively regenerated with dry method before wet reclamation, removes the resin, organic in old sand as possible Fat and dust.It can be increased substantially using hot water washed-out sand and be wrapped in the resin film of old sand grain surface solubility in water and molten Speed is solved, regenerating used efficiency is further increased and reduces washed-out sand water consumption.To avoid causing secondary pollution using fossil fuel And reclaimed sand cost is reduced, recoverable steel-casting foundry metallurgical electric furnace cooling water (50 DEG C -70 DEG C of water temperature) is dirt cheap with heat pump Water temperature is increased to required temperature and carries out washed-out sand by ground.Vacuum drier similarly can be used the washed regeneration for remaining higher temperature Sand dehydrates, and the reclaimed sand after drying becomes finished sand after screening.

This method includes alkali phenolic aldehyde old sand being sent into dry reclamation machine first to carry out dry reclamation, then tentatively regenerated warp Reclaimed sand be placed in hot water and impose the measures such as strong stirring, rubbing and cleaned.Washed-out sand sewage is filtered out in cleaning process In resin and fine powder, Yu Shui heating after be back to washed-out sand again.Reclaimed sand is dehydrated after cleaning, dries, sieves.It recycles wet Industrial chemicals re-using is can be used as after the resin that method regenerates and dry reclamation falls off in the process suitably processing.Its key step is such as Under：1, alkali phenolic aldehyde old sand is sent into dry reclamation machine giving treatment process through magnetic separation, broken, dry etc. treated, in machinery Repeatedly hit, rubbing the effects that under, the resin film of sand grain surface is by phased separation, and the resin film and dust to fall off is in air-introduced machine It is separated from reclaimed sand under attraction.2, the preliminary regenerated reclaimed sand of warp and hot water are added to the container and impose strong stirring Equal measures, the resin film of sand grain surface remaining are dissolved rapidly, are fallen off, in the hot water as the clean reclaimed sand of a grain.3, it washes Portion's overflow port overflows sewage from container during sand, and the sewage of discharge detaches resin and fine powder in water outlet through filter device, Washed-out sand water is re-used as after Yu Shui is heated to send back in container.4, stop after the reclaimed sand quality in container reaches requirement clear It washes, squeezes the water in sand to the greatest extent first with compressed air, then release reclaimed sand.5, it closes and puts sand valve, sand and hot water is added.It repeats The above process.6, the reclaimed sand of releasing is sent into drying, becomes finished product reclaimed sand after screening.7, recycling is in dry reclamation and wet The alkali phenolic resin isolated in method regenerative process can be used as industrial chemicals after suitably adding.

Above-mentioned regenerating used system includes centrifugal old-sand regenerating machine (referred to as centrifugation regenerating device) deduster, bucket elevator (abbreviation bucket elevator), used sand regenerating machine (abbreviation hot-fluid regenerating device), plate and frame pressure worry machine (referred to as pressure worry machine), vacuum vibration Flowing dryer (abbreviation vacuum drier), boiler, steam compression type heat pump of high-temp water source (abbreviation heat pump).It wherein centrifuges again Life includes staving, is enclosed into sand hopper, counterattack, regeneration basin, motor, fan blade, sand removing hole.It is located at the top of staving into sand hopper, then Raw basin is in inside staving, and counterattack circle is located at the top of regeneration basin, and regenerating the sand in basin can throw on the inner wall of counterattack circle.Electricity Motivation is fixed on staving lateral wall, and regeneration basin is connect by bearing block and triangular driving band with motor.Fan blade is fixed on regeneration Basin lower part, motor can drive regeneration basin and fan blade rotation.Staving bottom is equipped with sand removing hole, and top is equipped with dust-exhausting port and passes through Pipeline is connected to deduster.

Hot-fluid regenerating device includes staving, into sand hopper, into heat pipe, sand removing hole seal base, agitating device, air inlet pipe, overflow Pipe.It is located at the top of staving into sand hopper, sand inlet sealing device is arranged below into sand hopper.Agitating device is mounted on bucket by bearing block Its impeller is in inside staving at the top of body.It is located at staving lower part into heat pipe.Staving bottom is equipped with sand removing hole seal base, and bottom plate can To be turned on and off sand removing hole.Bottom plate top is equipped with metal mesh, and lower part is equipped with drainpipe.Air inlet pipe is located at the top of staving, overflow Pipe is located at staving top.Air inlet pipe is connected to air compressor machine.

Filter press includes rack, filtering sheet frame, water inlet pipe, outlet pipe, water pump, hydraulic cylinder.Filtering sheet frame has multigroup, level It is stacked in rack, overanxious medium is equipped in sheet frame.Water inlet pipe, outlet pipe are connected to filtering sheet frame respectively, and water inlet can pass through Filter medium in sheet frame is discharged from outlet pipe.Water inlet pipe is connected with the overflow pipe of hot-fluid regenerating device, drainpipe respectively by water pump It is logical.Hydraulic cylinder is located in rack, and each filtering sheet frame can be sequentially turned on and off by starting hydraulic cylinder.

Boiler include babinet, return pipe, outlet pipe, into hot-water line, heating tube.Return pipe and all it is located at water into hot-water line Box top, outlet pipe are located on the side wall of lower box.Heating tube is located at the lower part in babinet.The water outlet of return pipe and filter press Pipe is connected to.The outlet pipe of boiler is connected to by water pump and hot-fluid regenerating device into heat pipe.The water inlet pipe of heating tube divides from water pipe It is not connected to heat pump, the water that heat pump can be in heat hot water case by heating tube.It is connected into hot-water line with waste heat water source aqueduct.

Vacuum drier includes staving, outer housing, sand inlet, exhaust tube, sand export and sealing device, rack, spring, swashs Vibrating device, motor, into hot-water line, heat extraction water pipe.Sand inlet, exhaust tube are located at the top of staving, and sand export and sealing device are set In staving lower part, sand export can be turned on and off.Constituted between staving and outer housing a cavity water jacket and with it is empty inside staving Between it is not connected.It is located at outer housing top into hot-water line, hot-water outlet pipe is located at outer housing lower part.Outer housing is mounted on by spring In rack.Exciting device is by one group of eccentric block and links axis etc. and constitutes, and is connected with motor by triangle transmission or tablet band.Swash Vibrating device is fixed on outer housing bottom, and motor can drive exciting device that staving is caused to vibrate.Exhaust tube and water-ring vacuum pump Connection.Start water-ring vacuum pump, staving inner space can form negative pressure.Hot water can be through flowing into water jacket, then from going out into hot-water line Hot-water line flows out, and iterative cycles are heated to staving.

Centrifuge regenerating device sand removing hole and hot-fluid regenerating device between sand hopper, the bottom plate sealing device of hot-fluid regenerating device Between the sand inlet of vacuum drier, it is designed with bucket elevator and is connected.Valve and detection, peace are correspondingly provided on above-mentioned pipeline Full device.The hot-fluid regenerating device, boiler are designed with insulating layer outside vacuum drier.

Other dry reclamation machines such as vibration reclaiming machine for waste sand, air-flow reclaiming machine for waste sand can also be used in the centrifugation regenerating device. The wet reclamatioies machines such as hydrocyclone reclaiming machine for waste sand, spiral organ reclaiming machine for waste sand can also be used in the used sand regenerating machine. Solar drying apparatus, heat pump drying device or spiral vertical vibration drying machine can also be used in the vacuum drier, roller dries The devices such as dry machine.The filter devices such as cross flow filter, nanofiltration can also be used in the filter press.The boiler hot-water heating system Absorption water resource heat pump can also be used or use boiler.

Advantages of the present invention：

The present invention has many advantages compared with other alkali phenolic aldehyde regenerating used methods：

1, the ability of removal old sand grain surface inertness film is strong, and reclaimed sand quality is high, can substitute the use of fresh sand completely, make face Sand core sand.

2, the problem of violent in toxicity contamination hazard organic there is no discharge of noxious gases, especially dioxin furans, favorably Environmental protection.

3, it is not required to setting flue dust innocuity disposal system, it can significantly investment reduction and operating cost.

4, water consumption is few, is not required to separately set huge sewage disposal system.

5, regeneration water reuse repeatedly, economizes on resources, sewage zero-discharge.

6, waste heat is made full use of using heat pump and Minton dryer, does not consume fossil fuel, energy conservation and environmental protection.

7, the binder in recyclable old sand.It can be re-used after the binder processing of recycling and eliminate pollution.

8, it is applicable in all regenerating useds using water-soluble binder such as alicyclic organic solidification regenerating water-glass old sand.It ties below Attached drawing is closed the preferred embodiment of the present invention is specifically described.

Description of the drawings

Attached drawing 1, attached drawing 2 are the schematic diagrams of first embodiment of the invention, wherein part is broken away.

Attached drawing 2, attached drawing 3 are the schematic diagrams of another embodiment of the present invention, wherein part is broken away.

Specific implementation mode

Attached drawing 1, attached Fig. 2 shows regenerating used systems to include centrifugation regenerating device 10, hot-fluid regenerating device 12, vacuum drier 22, filter 40, boiler 34.Centrifugation regenerating device 10 be vertical unit, including into sand hopper 11, staving 1, dust-exhausting port 2, counterattack Circle 3, regeneration basin 4, fan blade 5, bearing block 6, motor 7, triangular driving band 8, sand removing hole 9.The top of staving 1 is located at into sand hopper 11 Portion, regeneration basin 4 are located at the inside of staving 1 and are in into the lower section of sand hopper 11.Counterattack circle 3 is located at the top of regeneration basin 4, regeneration Sand grains in basin can be thrown on the inner wall of counterattack circle.Regeneration basin 4 by bearing block 6, triangular driving band 8 and is fixed on outside staving 1 The motor 7 of side is connected.Fan blade 5 is fixed on the lower part of regeneration basin 4, and motor can drive regeneration basin 4 and fan blade 5 to rotate.Bucket 1 top of body is equipped with dust-exhausting port 2, and dust-exhausting port is connected to by pipeline with deduster (being not drawn into figure).1 bottom of staving is equipped with sand removing hole 9。

Hot-fluid regenerating device 12 is vertical unit, including into sand hopper 13, agitating device 14, air inlet pipe 15, overflow pipe 16, staving 17, into heat pipe 18, sand removing hole seal base 20.Staving 17 is mounted in rack (being not drawn into figure), and staving is located at into sand hopper 13 17 top.Agitating device 14 is in mounted on its impeller of the top of staving 17 inside staving by bearing block.Air inlet pipe 15 is set At the top of staving 17, overflow pipe 16 is located at the top of staving 17, into heat pipe 18 be located at 17 lower part of staving and with communicated in staving. The bottom of staving 17 is equipped with sand removing hole seal base 20, and bottom plate can be turned on and off sand removing hole.On sand removing hole seal base 20 Portion is equipped with metal mesh 19, and lower part is equipped with drainpipe 21.Into 13 lower part of sand hopper be equipped with sand inlet sealing device, can be turned on and off into Sand mouth.

Filter press 40 is horizontal type device, including rack 41, filtering sheet frame 42, water inlet pipe 43, outlet pipe 44, hydraulic cylinder 45. Multigroup filtering sheet frame 42 is stacked in rack 41, and sheet frame is internally provided with filter medium (being not drawn into figure).Water inlet pipe 43 and water outlet Pipe 44 is connected to filtering sheet frame respectively, and water inlet can be discharged by the medium inside sheet frame from outlet pipe.Hydraulic cylinder 45 is located at rack On 41, each filtering sheet frame can be switched on or off individually by starting hydraulic cylinder.Water inlet pipe (is not drawn by water pump and pipeline in figure Go out) it is connected to respectively with overflow pipe 16, the drainpipe 21 on hot-fluid regenerating device 12.

Boiler 34 include babinet 35, return pipe 36, outlet pipe 39, into hot-water line 37, heating tube 38.Return pipe 36 and into Hot-water line 37 is located at the top of babinet 35, and outlet pipe 39 is located on the lower sides of babinet 35, and heating tube 38 is located in babinet 35 Lower part.Return pipe 36 is connected to the outlet pipe 44 of filter 40.The outlet pipe 39 of boiler by water pump and pipeline (in figure It is not drawn into) it is connected into heat pipe 18 on hot-fluid regenerating device 12.Into hot-water line 37 and waste heat water source aqueduct (being not drawn into figure) Connection.The inlet tube and outlet tube of heating tube 38 is connected to heat pump assembly (being not drawn into figure) respectively.Heat pump assembly can be added by heating tube Water in hot boiler.

Vacuum drier 22 includes staving 24, outer housing 26, sand inlet 23, exhaust tube 25, close into hot-water line 27, sand removing hole Seal apparatus 28, rack 29, exciting device 31, motor 30, hot-water outlet pipe 32, spring 33.Sand inlet 23 and exhaust tube 25 are all located at The top of staving 24, sediment outflow mouth sealing device 28 are located at 24 lower part of staving.Sediment outflow mouth sealing device can open or close sand removing hole, 28 lower section of sediment outflow mouth sealing device is equipped with vibrating screen (being not drawn into figure).It is located at the top of outer housing 26 into hot-water line 27, goes out heat Water pipe 32 is located at the lower part of outer housing 26, the cavity all constituted between outer housing 26 and staving 23 into hot-water line, hot-water outlet pipe Connection.Outer housing 26 is mounted on by spring 33 in rack 29.Exciting device 31 is fixed on outer housing lower part, and motor 30 passes through Triangular driving band or tablet band (being not drawn into figure) are connected with exciting device 31, and motor drives exciting device staving can be caused to shake It is dynamic.Exhaust tube 25 is connected to vacuum pump (being not drawn into figure), and starting vacuum pump can cause 24 inside of staving to be in vacuum state.

Centrifuge regenerating device 10 sand removing hole 9 and hot-fluid regenerating device 12 between sand hopper 13, the sediment outflow of hot-fluid regenerating device 12 Bucket elevator (being not drawn into figure) is designed between mouth seal base 20 and the sand inlet 23 of vacuum drier 22 to be connected to.The above pipeline It is correspondingly provided with valve and measurement, safety device.

When carrying out regenerating used, first opens being introduced into the valve on hot-water line 37, in water tank for boiler 34 and come from waste heat The hot water at water source.The hot water being then turned in heat pump assembly heat hot water case 34.Since the hot water has 50 DEG C -70 DEG C, as long as disappearing Consumption little energy can be increased to required temperature.By works such as broken, magnetic separation, dryings while hot water in heat hot water case Sequence gives processed alkali phenolic aldehyde old sand and is sent into centrifugation regenerating device 10.Into the alkali phenolic aldehyde in sand hopper 11 at the top of into centrifugation regenerating device Old sand flow into regeneration basin 4 in, at this time regenerate basin and the impeller high speed rotation under the drive of motor 7, regenerate basin 4 in old sand by Counterattack circle 3 is thrown in the effect of centrifugal force, and is rebounded again in regeneration basin, the sand in above-mentioned rubbing repeatedly, strong, knockout process The resin film on grain surface is by phased separation.Under fan blade 5 and the collective effect of dedusting draft, the resin film and dust that peel pass through Dust-exhausting port 2 is drawn into deduster.Reclaimed sand is through the gap between counterattack circle 3 and regeneration basin 4 outside 9 outflow machine of sand removing hole.Through Cross preliminary regenerated alkali phenolic aldehyde sand being sent into staving 17 into sand hopper 13 from 12 top of hot-fluid regenerating device.Then it opens into heat pipe 18 On valve, be passed through the high temperature and pressure hot water for carrying out self heating water tank 34, while starting agitating device 14.It is stirred in high-temperature-hot-water and strength Under the collective effect mixed, sand grain surface wraps up in cull film and dissolves rapidly, falls off, and becomes clean reclaimed sand, the tree to fall off Adipose membrane is flowed out with sewage from overflow port 16.The sewage of outflow is pressed into the filtering deckle board 42 of filter 40 by water pump and passes through filtering Medium.When sewage flows through filter medium, resin, fine powder in water are retained by filter medium, pass through the clear water stream of filter medium Enter after boiler 34 is heated and is reused for washed-out sand.After reclaimed sand is met the requirements, closes into the valve on hot-water line 18 and stop It only stirs, opens the valve on drainpipe 21, the sewage retained in staving is i.e. through regeneration layer of sand and sand block metal mesh 19 through row Water pipe 21 flows out outside staving, injects boiler 34 after the filtering of filter 40.

In order to reduce reclaimed sand water content as far as possible, reclaimed sand drying cost is reduced, can be replaced in sand using gas Moisture content closes into sand hopper 13 and opens air inlet pipe 15, compressed air is passed through in staving 17, squeezes out water in layer of sand, works as moisture content Air inlet pipe 15 is first closed after draining and is then turned on sand removing hole seal base 20, and loose reclaimed sand flows out staving at once.Outflow is again Greensand sends to drying.Sand removing hole seal base 20 and drainpipe 21 are closed after the reclaimed sand in staving 17 is drained, are opened into sand The sand inlet sealing device of bucket 13, reloads Sha Heshui.Repeat above-mentioned regenerating used process.When the filtering sheet frame of filter 40 Start hydraulic cylinder 45 when filter cake in 42 is full of and sequentially open the filtering releasing filter cake of sheet frame 42, is then turned off filtering sheet frame and opens again Begin to filter, operate repeatedly.It collects during regenerating used and generates during all dry reclamations and hot wet reclamation The dezidua of alkali phenolic aldehyde sand can be used as industrial chemicals use after suitably processing, prevent secondary pollution environment.From hot-fluid regenerating device The sand inlet 23 that the reclaimed sand of 12 outflows is sent into through bucket elevator on vacuum drier 22 seals after entering drying machine staving 24 into sand Mouthful, then start exciting device 31 and vacuum pump (being not drawn into figure), while logical to the cavity between staving 24 and outer housing 26 Enter circulating hot water, the reclaimed sand in staving 24 is heated.Since reclaimed sand also has higher temperature after hot water washs, into bucket Further heated after body 24, vacuum condition considerably reduces the boiling point of water again, therefore in staving sand grain surface water it is fast Speed evaporation becomes water vapour and is pumped.Staving 24 generates under the drive of exciting device 31 to be vibrated and then causes in staving 24 Reclaimed sand tempestuously beats, rolls, rubs, and more accelerates regeneration layer of sand internal moisture evaporation, and reclaimed sand is dried rapidly.Work as regeneration After sand reaches requirement, vacuum pump is first closed, is then turned on the mouth sealing device 28 that shakes out, it will be outside reclaimed sand releasing machine.When in staving Reclaimed sand is closed after draining to shake out mouth sealing device 28 and opens sand inlet 23, starts the drying of next round reclaimed sand.It is dry from vacuum The dry sand released in dry machine becomes finished product reclaimed sand after vibrating screen sieves.

Liquid-jet vacuum pump or other vacuum pumps can also be used in the vacuum pump of the vacuum drier adapted.

Attached drawing 2, attached drawing 3 show regenerating used system include vibration crushing regenerating machine 1, hydrocyclone regenerating unit 13, Spiral vertical vibration drying machine 47, filter 40, boiler 34.Vibration crushing regenerating machine 1 is vertical unit, including body 2, is shaken Dynamic motor 6, spring 7, holder 8.Vibrating motor 6 is fixed on the bottom of body 2, and body 2 is located on 8 in rack, body 2 and rack Spring 7 is equipped between 8.Vibrating motor 6 can drive body 2 to generate vibration.The outer wall of body 2 is equipped with upper and lower two layers of spiral transferring Slot 4 and 5,2 inner wall of body is sent to be equipped with spiral conveying groove 10.Lower part is equipped with upper layer and lower layer sieve plate 11 and 12, body 2 in body 2 Top is additionally provided with sand export 3 and miscellaneous object outlet 9.The feed inlet of spiral conveying groove 4 is located at the lower section of sieve plate 12, discharge port with go out Sand mouth 3 is connected to.The reclaimed sand of 12 lower section of sieve plate can be discharged along spiral conveying groove 4 from sand export 3.The charging of spiral conveying groove 5 Mouth is located between sieve plate 11 and sieve plate 12, and discharge port is located at body upper and is connected to internal body, small below sieve plate 11 Sand lump can be returned along spiral conveying groove 5 in body.The discharge port of spiral conveying groove 10 is connected to miscellaneous object outlet 9, above sieve plate 11 Sundries can go out along delivery chute 10 miscellaneous object outlet 9 discharge.

Hydrocyclone regenerating unit 13 includes：Hydrocyclone (abbreviation cyclone) 14, vibrating-dewatering screen (are referred to as dehydrated Sieve) 17, rack, storage sand water tank 28, mortar pump 27.Cyclone 14 is divided into the top part and the bottom part point, and centre is separated with partition board, and partition board center is set There is overflow pipe 15 to be connected to two chambers up and down.14 top of cyclone is equipped with outlet pipe 25, and lower part is equipped with feed pipe 16, and bottom is equipped with sediment outflow Mouth 23.Tangential direction therewith internal connection of the feed pipe 16 along cyclone diameter.14 outer wall of cyclone is additionally provided with lifting lug 24, eddy flow Device is fixed on by lifting lug in rack (being not drawn into figure).

Dewatering screen 17 is located at the lower section of cyclone 14.Dewatering screen 17 includes sieve plate 18, vibrating motor 19, drainpipe 20, row Sand mouth 21, sunpender 22.18 low side of sieve plate is obliquely located at the inside of dewatering screen 17 to sand removing hole direction, and dewatering screen is separated into Lower two parts, lower end are connected to sand removing hole 21.The bottom of dewatering screen 17 is equipped with drainpipe 20, and top is equipped with sunpender 22, sunpender It is mounted in rack by spring handle dewatering screen 17.Vibrating motor 19 is fixed on the side wall of dewatering screen 17, Vibration on Start-up motor Dewatering screen can be made to generate vibration.

The top for storing up sand water tank 28 is equipped with return pipe 33 and sand inlet 46.The top for storing up sand water tank side wall is equipped with overflow pipe 32, lower part is equipped with into hot-water line 31.It is equipped with metal mesh 30 into hot-water line 31.Mortar pump 27 is located at the top of storage sand water tank 28. The feed inlet 29 of mortar pump stretches into the lower part in storage sand water tank 28 by pipeline, and discharge port 26 and the feed inlet 16 of cyclone 14 connect It is logical.Return pipe 33 is connected to the drainpipe 20 of the outlet pipe of cyclone 14 25 and dewatering screen 17 respectively.Overflow pipe 32 passes through water pump (being not drawn into figure) is connected to the water inlet pipe 43 on filter 40, passes through the outlet pipe on water pump and boiler 34 into hot-water line 31 39 connections.

Spiral vertical vibration drying machine 47 includes into sand hopper 49, tower body 50, spring 53, rack 55, vibrating motor 56.Into sand Bucket 49 is located at 50 top of tower body, and 50 inside of tower body is alternately equipped with two layers of helical blade 51 and 52, and blade is from tower body top into sand hopper 49 lower sections are screwed into tower body lower part, and 51 surface of blade is equipped with many small through hole, and helical blade 51,52 and the tower wall of tower body constitute sky Chamber can only be passed through into the air-flow between two layers of blade from aperture, and the sand grains on blade 51 cannot leak down from aperture at this time.Tower 50 lower part of body is equipped with sand removing hole 57, and the sand on helical blade can be discharged from sand removing hole.50 bottom of tower body is additionally provided with heat inlet 54, exhaust outlet 48 is located at the top of tower body 50, and hot gas can enter the cavity between two layers of blade from heat inlet, pass through blade 51 On aperture from exhaust outlet 48 be discharged.Tower body 50 is mounted on by spring 53 on holder 55, and vibrating motor 56 is mounted on tower body 50 Bottom, Vibration on Start-up motor can cause tower body to vibrate.The sand export 3 of the vibration crushing regenerating machine 1 and storage sand water tank 28 Between sand inlet 46, the sand removing hole 21 and spiral vertical vibration drying machine of dewatering screen 17 are equipped with bucket elevator between sand hopper 49 (being not drawn into figure) is connected to.57 lower section of sand removing hole is additionally provided with vibrating screen (being not drawn into figure).It is correspondingly provided with valve on above-mentioned pipeline Door and detection, safety device.

Processed alkali phenolic aldehyde old sand is given when regenerating used to be sent into the body 2 of vibration crushing regenerating machine 1, opens vibration Old sand after motor 6 in body is as the vibration of body 2 generates fierce collision, friction on sieve plate, and old sand block is gradually broken Broken, the resin film of sand grain surface is also gradually divested simultaneously, is less than under the hourglass to sieve plate of sieve pore.Drain to 12 lower section of sieve plate again Greensand is discharged from sand export 3 along spiral conveying groove 4 and is sent into storage sand water tank 28 by bucket elevator.It drains to sieve plate 11 times but wears and be not sieved The small sand lump of plate 12 is promoted along spiral conveying groove 5 to returning to along body 2 breaking, regeneratings again after certain altitude.It is isolated from sand The spiral conveying grooves 10 of the sundries inside body 2 such as the metal come are discharged by miscellaneous object outlet 9.

From the reclaimed sand in vibration crushing regenerating machine 1 out after sand inlet 46 enters storage sand water tank 28, first open into heat Valve on water pipe 31 is put into hot water and is mixed with reclaimed sand, is then turned on mortar pump 27 the sand water mixed mortar in storage sand water tank 28 Extraction is pressed into cyclone 14 through the feed inlet 16 on cyclone 14.It is generated in cyclone tangentially into the mortar of cyclone Quickly rotation rotates wherein heavy sand grains abuts inner wall under the action of the centrifugal force, between sand grains and inner wall, sand grains and sand grains Between generate strength rubbing, sand grains further regenerated.Reclaimed sand is discharged from the bottom sand export 23 of cyclone 14, flows into de- Water sieve 17.The small fine powder of proportion and the resin film to fall off are discharged as water flows through overflow pipe 15 from outlet pipe 25, then through return pipe 33 return to storage sand water tank 28.The sewage returned in storage sand water tank 28 is flowed out from the overflow pipe 32 of storage sand water tank upper, and sewage is by water It is pumped into filter 40 and filters out resin and fine powder therein, clear water flows back to boiler 34.Reclaimed sand into dewatering screen 17 exists Under the effect of vibration of dewatering screen, water contained in sand is separated and flowed under sieve plate 18 flows back to storage sand water tank from discharge outlet 20 28.Dewatered reclaimed sand is discharged along 18 surface of sieve plate from sand removing hole 21.The reclaimed sand of discharge enters spiral from into sand hopper 49 Fallen on helical blade 51 in the tower body 50 of vertical vibration drying machine 47, while high temperature hot gas blasted from heat inlet 54, hot gas from It is sprayed in the aperture of blade 51, carry the moisture content in sand across layer of sand is discharged from exhaust outlet 48.During this period with tower body Vibration, sand grains fierce bounce, rolling, moisture content of sand grain surface on blade gradually evaporate, and dry reclaimed sand is along helical-blade Piece is discharged from sand removing hole 57, becomes finished product reclaimed sand after vibrating screen sieves.Other same first embodiments of operation.If production scene There is residue steam, the water in boiler 34 also directly can use Boiler Steam to heat.

The above is only the preferred case of the present invention, can also do several deformations without departing from the principle of the present invention And transformation, it all should be depending on belonging to the scope of protection of the present invention.

Claims (2)

1. a kind of dry method, the wet method combined regenerating used system of heat, it is characterized in that：Including dry method reclaiming machine for waste sand, hot wet method old sand Regenerating device, drying machine, filter, boiler；Centrifugal old-sand regenerating machine (10) can be used in dry method reclaiming machine for waste sand, is vertical Device, including enclose (3), regeneration basin (4), fan blade (5), bearing block into sand hopper (11), staving (1), dust-exhausting port (2), counterattack (6), motor (7), triangular driving band (8), sand removing hole (9), the top of staving (1) is located at into sand hopper (11), and regeneration basin (4) is set In the inside of staving (1) and it is in the lower section into sand hopper (11), counterattack circle (3) is located at the top of regeneration basin (4), regenerates in basin Sand grains can throw on the inner wall of counterattack circle, regeneration basin (4) by bearing block (6), triangular driving band (8) and is fixed on staving (1) motor (7) on the outside of is connected, and fan blade (5) is fixed on the lower part of regeneration basin (4), motor can drive regeneration basin (4) and Fan blade (5) rotates, and staving (1) top is equipped with dust-exhausting port (2), and dust-exhausting port is connected to by pipeline with deduster, and staving (1) bottom is set There is sand removing hole (9)；Used sand regenerating machine (12) can be used in hot wet method reclaiming machine for waste sand, is vertical unit, including into sand hopper (13), agitating device (14), air inlet pipe (15), overflow pipe (16), staving (17), into heat pipe (18), sand removing hole seal base (20), staving (17) is mounted in rack, the top of staving (17) is located at into sand hopper (13), agitating device (14) passes through bearing block Mounted on the top of staving (17), its impeller is in inside staving, and air inlet pipe (15) is located at the top of staving (17), overflow pipe (16) be located at the top of staving (17), into heat pipe (18) be located at staving (17) lower part and with communicated in staving, the bottom of staving (17) Portion is equipped with sand removing hole seal base (20), and bottom plate can be turned on and off sand removing hole, and sand removing hole seal base (20) top is equipped with Metal mesh (19), lower part be equipped with drainpipe (21), into sand hopper (13) lower part be equipped with sand inlet sealing device, can be turned on and off into Sand mouth；Plate and frame type filter-press machine (40) can be used in filter press, is horizontal type device, including rack (41), filtering sheet frame (42), into Water pipe (43), outlet pipe (44), hydraulic cylinder (45), multigroup filtering sheet frame (42) are stacked in rack (41), and sheet frame is internally provided with Filter medium, water inlet pipe (43) and outlet pipe (44) respectively with filtering sheet frame be connected to, intake can by the medium inside sheet frame from Outlet pipe is discharged, and hydraulic cylinder (45) is located in rack (41), and each filtering sheet frame can be switched on or off individually by starting hydraulic cylinder, Water inlet pipe is connected to overflow pipe (16), the drainpipe (21) on hot-fluid regenerating device (12) respectively by water pump and pipeline；Boiler (34) include babinet (35), return pipe (36), outlet pipe (39), into hot-water line (37), heating tube (38), return pipe (36) and into Hot-water line (37) is located at the top of babinet (35), and outlet pipe (39) is located on the lower sides of babinet (35), and heating tube (38) is set Lower part in babinet (35), return pipe (36) are connected to the outlet pipe (44) of filter (40), the outlet pipe (39) of boiler It is connected into heat pipe (18) on hot-fluid regenerating device (12) by water pump and pipeline, into hot-water line (37) and waste heat water source aqueduct Connection, the inlet tube and outlet tube of heating tube (38) are connected to heat pump assembly respectively, and heat pump assembly can be by heating tube heat hot water case Water；Vacuum drier (22), including staving (24), outer housing (26), sand inlet (23), exhaust tube can be used in drying machine (25), into hot-water line 27, sediment outflow mouth sealing device (28), rack (29), exciting device (31), motor (30), hot-water outlet pipe (32), spring (33), sand inlet (23) and exhaust tube (25) are all located at the top of staving (24), and sediment outflow mouth sealing device (28) is set In staving (24) lower part, sediment outflow mouth sealing device can open or close sand removing hole, be equipped with and shake below sediment outflow mouth sealing device (28) Dynamic sieve.The top of outer housing (26) is located at into hot-water line (27), hot-water outlet pipe (32) is located at the lower part of outer housing (26), into hot water The cavity that pipe, hot-water outlet pipe are constituted between outer housing (26) and staving (23) is connected to, and outer housing (26) passes through spring (33) In rack (29), exciting device (31) is fixed on outer housing lower part, and motor (30) passes through triangular driving band or tablet Band is connected with exciting device (31), and motor drives exciting device staving can be caused to vibrate, and exhaust tube (25) is connected to vacuum pump, Starting vacuum pump can cause to be in vacuum state inside staving (24)；The sand removing hole (9) of centrifugal old-sand regenerating machine (10) and heat Flow reclaiming machine for waste sand (12) between sand hopper (13), the sand removing hole seal base (20) and vacuum of used sand regenerating machine (12) Be designed with bucket elevator connection between the sand inlet (23) of drying machine (22), the above pipeline be correspondingly provided with valve and measurement, Safety device.

2. a kind of method carrying out regenerating used using dry method described in claim 1, the wet method combined regenerating used system of heat, It is characterized in：When carrying out regenerating used, first open boiler (34) into the valve on hot-water line (37), introduced from useless in water tank The hot water of thermal water source, the hot water being then turned in heat pump assembly heat hot water case (34), since the hot water has 50 DEG C -70 DEG C, only Required temperature can be increased to by consuming little energy, by broken, magnetic separation, drying while hot water in heat hot water case Etc. processes give processed alkalescent phenol resin old sand and be sent into centrifugal old-sand regenerating machine (10), into regenerating device at the top of into hourglass Alkalescent phenol resin old sand in bucket (11) flows into regeneration basin (4), regenerates basin and impeller at this time under the drive of motor (7) High speed rotation regenerates the old sand in basin (4) and is thrown to counterattack circle (3) by the effect of centrifugal force and rebounded again in regeneration basin, upper State repeatedly, strong rubbing, knockout process sand grains surface resin film by phased separation, in fan blade (5) and dedusting draft Under collective effect, the resin film and dust that peel are drawn by dust-exhausting port (2) in deduster, reclaimed sand through counterattack circle (3) and The gap between basin (4) is regenerated outside sand removing hole (9) outflow machine；By preliminary regenerated alkalescent phenol resin sand from hot-fluid old sand Being sent into staving (17) into sand hopper (13) at the top of regenerating device (12), then opens into the valve on heat pipe (18), is passed through and comes from The high temperature and pressure hot water of boiler (34), while agitating device (14) is started, in the collective effect of high-temperature-hot-water and strong stirring Under, sand grain surface wraps up in cull film and dissolves rapidly, falls off, and becomes clean reclaimed sand, the resin film to fall off with sewage from Overflow port (16) flows out, the sewage of outflow by the filtering deckle board (42) of water pump indentation filter (40) and by filter medium, When sewage flows through filter medium, resin, fine powder in water are retained by filter medium, and hot water is flowed by the clear water of filter medium Case (34) is reused for washed-out sand after being heated, and after reclaimed sand is met the requirements, closes into the valve on hot-water line (18) and stopping The valve on drainpipe (21) is opened in stirring, and the sewage retained in staving is i.e. through regeneration layer of sand and sand block metal mesh (19) warp Drainpipe (21) flows out outside staving, and the injection boiler (34) after filter (40) filtering contains to reduce reclaimed sand as far as possible Water reduces reclaimed sand drying cost, can replace the moisture content in sand using gas, that is, closes into sand hopper (13) and open air inlet pipe (15), it is passed through compressed air in staving (17) and squeezes out water in layer of sand, air inlet pipe (15) is first closed after moisture content drains and is opened again Sand removing hole seal base (20) is opened, loose reclaimed sand flows out staving at once, and the reclaimed sand of outflow sends to drying, when staving (17) Sand removing hole seal base (20) and drainpipe (21) are closed after interior reclaimed sand is drained, open the sand inlet sealing into sand hopper (13) Device reloads Sha Heshui, above-mentioned regenerating used process is repeated, when the filter cake in the filtering sheet frame (42) of filter (40) fills Start hydraulic cylinder (45) sequence unlatching filtering sheet frame (42) when full and release filter cake, is then turned off filtering sheet frame and restarts to filter, It operates repeatedly, the alkaline phenol formaldehyde generated during all dry reclamations and hot wet reclamation is collected during regenerating used The dezidua of resin sand can be used as industrial chemicals use after suitably processing, prevent secondary pollution environment；From hot-fluid regenerating device (12) sand inlet (23) that the reclaimed sand flowed out is sent into through bucket elevator on vacuum drier (22) enters drying machine staving (24) sand inlet is sealed afterwards, then starts exciting device (31) and vacuum pump, while between staving (24) and outer housing (26) Cavity be passed through circulating hot water, in staving (24) reclaimed sand heat, due to reclaimed sand also have after hot water washs it is higher Temperature, into staving (24) after further heated, vacuum condition considerably reduces the boiling point of water, therefore sand in staving again Grain surface water rapidly evaporation becomes water vapour and is pumped, staving (24) generated under the drive of exciting device (31) vibrate into And the reclaimed sand in staving (24) is caused tempestuously to beat, roll, rub, regeneration layer of sand internal moisture evaporation is more accelerated, then Greensand is dried rapidly, after reclaimed sand reaches requirement, first closes vacuum pump, is then turned on the mouth sealing device that shakes out (28), will be regenerated Outside sand releasing machine, is closed after the reclaimed sand in staving drains and shake out mouth sealing device (28) and open sand inlet (23), started Next round reclaimed sand is dried, and the dry sand released in vacuum drier becomes finished product reclaimed sand after vibrating screen sieves.