CN102649149B - Resin sand processing system and work method thereof - Google Patents
Resin sand processing system and work method thereof Download PDFInfo
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- CN102649149B CN102649149B CN 201210115841 CN201210115841A CN102649149B CN 102649149 B CN102649149 B CN 102649149B CN 201210115841 CN201210115841 CN 201210115841 CN 201210115841 A CN201210115841 A CN 201210115841A CN 102649149 B CN102649149 B CN 102649149B
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- 239000011347 resin Substances 0.000 title claims abstract description 41
- 229920005989 resin Polymers 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 20
- 238000001816 cooling Methods 0.000 claims abstract description 87
- 238000004378 air conditioning Methods 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims description 65
- 238000007599 discharging Methods 0.000 claims description 46
- 230000001172 regenerating effect Effects 0.000 claims description 38
- 238000000151 deposition Methods 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 19
- 238000005453 pelletization Methods 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 9
- 238000010943 off-gassing Methods 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000003595 mist Substances 0.000 claims description 4
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 27
- 238000003860 storage Methods 0.000 description 9
- 238000005266 casting Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
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Abstract
The invention discloses a resin sand processing system, which comprises a vibration crushing reclaimer, a feeding device, a sand-storing device, a sand-cooling device, a sand-reclaiming device, a cooling bed, a multifunctional feed bin, sand pneumatic conveying equipment, a compressed air unit, an air conditioning unit, a dedusting system and a sand mixer. The resin sand processing system has keypoints as follows: the sand-storing device has the same structure with the multifunctional feed bin, but different capacities; and each of the sand-storing device and the multifunctional feed bin comprises a temperature-adjusting bin, a feed inlet, a feed outlet, a valve, an air intake device and an air outlet. The feed inlet is hermetically and fixedly connected to the left side of the temperature-adjusting bin from left above; the air outlet is hermetically and fixedly connected to the right side of the temperature-adjusting bin from right above; the feed outlet is hermetically and fixedly connected to the middle of the lower part of the temperature-adjusting bin from below; the valve is arranged on the feed outlet; the air intake device penetrates through the lower part of the temperature-adjusting bin, and is fixed on the periphery of the lower part of the temperature-adjusting bin; and the air discharge part of the air intake device is positioned in the inner cavity of the temperature-adjusting bin.
Description
Technical field
The present invention relates to the sand preparing machine that uses in a kind of casting technology field, be specifically related to a kind of resin sand sand preparing system and method for work thereof.
Background technology
Sand casting is the current metal product manufacturing industry part mode of production commonly used.Sand casting is to use sand molding, the technology of casting then.Through casting, most of molding sand temperature can be very high, and these are called as old sand with the molding sand of crossing at foundry industry.In casting, continue to use old sand can influence the quality of foundry goods, make foundry goods produce defectives such as burning into sand, surperficial scab, sand washing, pore.In addition, the old sand sand grains can stick on the mould, influences the physical dimension of foundry goods.In order to reduce production costs, generally be by sand preparing system (comprising resin sand sand preparing system and tide mould sand sand preparing system etc.) old sand to be regenerated etc. to carry out recycling after the processing, wherein the temperature of old sand can directly have influence on the performance of old sand.And the resin sand in the old sand, if the sand temperature of old sand in the time of 35 ℃, only needs the resin of adding about 1.5%; If the sand temperature during from cooling bed come out is in the time of 50 ℃, still add then about 1.5% resin, then can cause reaction speed to be accelerated, the loam core embrittlement, bad core rate increases, if strengthen the consumption of resin, is added to about 2% to 2.5%, then not only waste the consumption of resin, and the increase of the gas of resin generation can have a strong impact on casting yield.
At first, can be than higher through the old sand temperature of casting; Secondly, environment temperature also can be to the certain influence of sand temperature generation of old sand, must be to the old sand processing of lowering the temperature.When environment temperature more than 25 ℃ the time; temperature when old sand is handled is usually in the time of 90 ℃ to 150 ℃; adopt cooling bed mode that old sand is lowered the temperature in original resin sand sand preparing system; generally the time of staying in cooling bed is 5 to 10 minutes to old sand; approximately can lower the temperature about 5 ℃ to 10 ℃; the old sand cooling-down effect is relatively poor; add the naturally cooling of old sand in circular flow; temperature when old sand finally enters sand storage after cooling bed come out and can't be regulated usually also about 45 ℃ to 55 ℃ again.At present, when environment temperature is higher than 25 ℃, also there is not the temperature when method can make old sand come out from sand storage effectively preferably to be lower than 35 ℃.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, the temperature when old sand is come out from sand storage is lower than 35 ℃ resin sand sand preparing system and method for work thereof.
The basic technical scheme of realizing the object of the invention is: a kind of resin sand sand preparing system, involving vibrations crushing regenerator, feed arrangement, deposit sand device, sand cooling radiator cooler, sand regenerating unit, cooling bed, multi-functional feed bin, sand material air-flow conveying equipment, compressed air unit, air conditioning unit, dust pelletizing system and puddle mixer.Its design feature is: the sand cooling radiator cooler is identical with the structure of multi-functional feed bin, the amount of capacity difference, and the sand cooling radiator cooler can be stored 20 tons to 100 tons sands, and multi-functional feed bin can be stored 100 tons to 500 tons sands.Sand cooling radiator cooler and multi-functional feed bin include temperature adjustment storehouse, charging aperture, discharging opening, valve, inlet duct and gas outlet.Substantially without hindrance block material in the temperature adjustment storehouse.Charging aperture and is connected with the inside in temperature adjustment storehouse from the airtight left side that is fixedly connected on the temperature adjustment storehouse, upper left side.The gas outlet and is connected with the inside in temperature adjustment storehouse from the airtight right side that is fixedly connected on the temperature adjustment storehouse, upper right side.Discharging opening and is connected with the inside in temperature adjustment storehouse from the airtight centre, bottom that is fastened on the temperature adjustment storehouse, below.Valve arranges on the discharging opening, can emitting the material in the temperature adjustment storehouse by opening valve.Inlet duct passes the bottom in temperature adjustment storehouse, and is fixed on the lower, outer perimeter in temperature adjustment storehouse, and the position of giving vent to anger of inlet duct is arranged in the inner chamber in temperature adjustment storehouse.
Above-mentioned sand material air-flow conveying equipment has 3, is called the first sand material air-flow conveying equipment, the second sand material air-flow conveying equipment and the 3rd sand material air-flow conveying equipment successively.The air conditioning unit is connected by corresponding pipeline and the air-flow distributor inlet duct respectively at sand cooling radiator cooler and multi-functional feed bin, and the assignment of traffic ratio of air-flow distributor is 1:5.The compressed air unit is connected with the air inlet of corresponding each sand material air-flow conveying equipment respectively by corresponding pipeline.
Above-mentioned swing crushing regenerating device is arranged on the corresponding pedestal.Feed arrangement comprises old sand feed bin, feeder and bucket elevator.The old sand feed bin is arranged on the corresponding pedestal, and is positioned at the below of the discharging opening of swing crushing regenerating device.Feeder is positioned at the below of the discharging opening of old sand feed bin, and feeder is sent into old sand in the hopper of bucket elevator, by bucket elevator old sand is sent into by the charging aperture of depositing the sand device by corresponding pipeline and is deposited in the sand device.Old sand is discharged the back by the discharging opening of depositing the sand device through valve again and is entered the sand regenerating unit by corresponding pipeline, and the sand regenerating unit is connected by the charging aperture of corresponding pipeline with the first sand material air-flow conveying equipment.The discharging opening of the first sand material air-flow conveying equipment is connected by the charging aperture of corresponding pipeline with the sand cooling radiator cooler.The discharging opening of sand cooling radiator cooler is connected with cooling bed charging aperture by corresponding pipeline.Cooling bed discharging opening is connected by the charging aperture of corresponding pipeline with the second sand material air-flow conveying equipment.The discharging opening of the second sand material air-flow conveying equipment is connected with the charging aperture of multi-functional feed bin by corresponding pipeline.The discharging opening of multi-functional feed bin is connected by the charging aperture of corresponding pipeline with the 3rd sand material air-flow conveying equipment.The discharging opening of the 3rd sand material air-flow conveying equipment is connected by the charging aperture of corresponding pipeline with the puddle mixer of production scene.The swing crushing regenerating device, deposit sand device, sand cooling radiator cooler, sand regenerating unit, gas outlet separately cooling bed and multi-functional feed bin and be connected with dust pelletizing system by corresponding pipeline.
Further technical scheme based on above-mentioned basic technical scheme is: inlet duct comprises sleeve pipe and air inlet pipe.Sleeve pipe has 1 to 4, and the shape and structure of each sleeve pipe is all identical.Each sleeve pipe two ends is equipped with and is used for the mounting flange of airtight fixedly connected air inlet pipe accordingly.Sleeve pipe is provided with the gas outlet that Open Side Down at its middle part along its axis direction, also is the position of giving vent to anger of inlet duct.Each sleeve pipe all arranges along the temperature adjustment storehouse of radially running through in temperature adjustment storehouse, and the mounting flange at two ends is positioned at outside the temperature adjustment storehouse, and the gas outlet is arranged in the temperature adjustment storehouse.Each sleeve pipe sets gradually from top to bottom, and circumferentially is uniformly-spaced angle setting along the temperature adjustment storehouse.Each sleeve pipe and airtight the fixedlying connected of the contacted part in temperature adjustment storehouse.
The quantity of above-mentioned air inlet pipe is 2 times of quantity of sleeve pipe.The shape and structure of each air inlet pipe is all identical.Each air inlet pipe is arranged in the corresponding sleeve pipe by the end as the outlet side separately, each air inlet pipe then be the pipeline section of giving vent to anger together with the outlet side at the interior pipeline section that is arranged in corresponding sleeve pipe.The gas outlet of port near sleeve pipe of giving vent to anger of each air inlet pipe.Each air inlet pipe is equipped with adpting flange at its position near the pipeline section of giving vent to anger, and this adpting flange is corresponding with the mounting flange of sleeve pipe.Each air inlet pipe is fixedlyed connected with the mounting flange of sleeve pipe is airtight by its adpting flange.
Technical scheme based on technique scheme is: the temperature adjustment storehouse is divided into pre-heat exchange section, heat exchange segment and quick heat exchange segment from top to bottom successively.Pre-heat exchange section is the round platform housing that Open Side Down, and without hindrance block material in the inner chamber of round platform housing.Heat exchange segment is cylindrical shell, and without hindrance block material in the inner chamber of this cylindrical shell.The upper end open of the cylindrical shell of heat exchange segment is corresponding with the lower ending opening of pre-heat exchange section, and the two airtight connection.Fast heat exchange segment is the reverse frustoconic housing of up/down perforation, and the upper end open of the rounding platform housing of heat exchange segment and heat exchange segment are that the lower ending opening of cylindrical shell is corresponding fast, and the two airtight connection.Charging aperture is from the left side of the airtight pre-heat exchange section that is fixedly connected on the temperature adjustment storehouse in upper left side.Charging aperture is provided with corresponding valve and can controls charging aperture and be in open mode or closed condition.The gas outlet is from the right side of the airtight pre-heat exchange section that is fixedly connected on the temperature adjustment storehouse in upper right side.Be provided with filter screen in the gas outlet, the mesh of filter screen is less than the particle diameter of bulk solids particle.Discharging opening is the airtight lower ending opening that is fastened on the rounding platform housing of quick heat exchange segment from the below.
Technical scheme based on technique scheme is: sleeve pipe has 2.2 sleeve pipes 51 are divided into sleeve pipe and setting of casing by the difference of its residing upper-lower position.Last sleeve pipe to being horizontally disposed with, and runs through the quick heat exchange segment in temperature adjustment storehouse at fore-and-aft direction along front and back, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment in temperature adjustment storehouse.Setting of casing along about to being horizontally disposed with, and run through the quick heat exchange segment in temperature adjustment storehouse on the left and right directions, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment in temperature adjustment storehouse.Setting of casing is positioned at the below of sleeve pipe.
Technical scheme based on above-mentioned each appropriate technical solution is: the pipeline section of giving vent to anger of each air inlet pipe is provided with 2 to 6 outgassing grooves that run through inside and outside its tube wall.Each outgassing groove is all along the axial setting of air inlet pipe, and between each outgassing groove along the circumferentially uniformly-spaced angle setting of air inlet pipe.Be coated with filter screen on the pipeline section of giving vent to anger of each air inlet pipe, the mesh of filter screen is less than the particle diameter of bulk solids particle.
Realize the method for work of the resin sand sand preparing system of the object of the invention, have following steps:
A, elder generation send old sand into the swing crushing regenerating device and carry out fragmentation, preliminary demoulding and screening, then the old sand that sieves out is sent in the old sand feed bin of feed arrangement through the discharging opening of swing crushing regenerating device, old sand in the old sand feed bin is sent in the hopper of bucket elevator by feeder, by bucket elevator old sand is sent into by the charging aperture of depositing the sand device and deposited in the sand device.The temperature of old sand is greatly about 90 ℃ to 150 ℃ at this moment.
B, old sand enter the sand regenerating unit after being discharged through valve by the discharging opening of depositing the sand device, old sand grinds off through the resin molding of mechanical friction with the old sand surface in the sand regenerating unit, resin molding under coming off and micro mist are reclaimed and are handled accordingly by dust pelletizing system through corresponding wind selecting separator.
C, old sand are sent into by the first sand material air-flow conveying equipment and are carried out the fast cooling processing in the sand cooling radiator cooler.Be in 10 ℃ to 20 ℃ the dry air input temperature adjustment storehouse with temperature by the air inlet pipe of air conditioning unit by corresponding conveyance conduit and sand cooling radiator cooler, and make the old sand temperature reduce by 8 ℃ to 15 ℃ fast, and adjust the flow of dry air on this basis.Old sand falls to being emitted until quilt of sand cooling radiator cooler bottom and needs 20 to 30 minutes under the gravity effect, in this process, old sand fully contacts through pre-heat exchange section, heat exchange segment and the quick heat exchange segment in temperature adjustment storehouse and with dry air successively, and the dry air after the heat absorption flows out the back discharges by dust pelletizing system from the gas outlet.
D, the old sand of lowering the temperature after handling through the sand cooling radiator cooler enter the cooling bed processing of lowering the temperature accordingly again from entering after the sand cooling radiator cooler is emitted.Old sand is through 5 ℃ to 10 ℃ of cooling bed reduction temperature.
E, old sand come out then to be transported to the multi-functional feed bin by the second sand material air-flow conveying equipment from cooling bed, and old sand enters multi-functional feed bin and deposits, the processing of lowering the temperature again when depositing.Be that 10 ℃ to 20 ℃ dry air is imported in the temperature adjustment storehouse of multi-functional feed bin by the air inlet pipe of air conditioning unit by corresponding conveyance conduit and multi-functional feed bin with temperature, and the flow of regulating dry air accordingly make the old sand temperature finally be reduced to 25 ℃ to 35 ℃.Old sand falls to being needed through 3 to 4 hours until emitting of multi-functional feed bin bottom under the gravity effect, in this process, old sand fully contacts through pre-heat exchange section, heat exchange segment and the quick heat exchange segment in temperature adjustment storehouse and with dry air successively, and the dry air after the heat absorption flows out the back discharges by dust pelletizing system from the gas outlet.Old sand by the 3rd sand material air-flow conveying equipment be delivered to the production scene and through behind puddle mixer and corresponding curing agent, the abundant mixing of resin for use.
The present invention has positive effect:
(1) resin sand sand preparing system of the present invention is simple in structure, replaces depositing the sand device in the original system with sand cooling radiator cooler of the present invention, gets final product with the sand storage in the multi-functional feed bin replacement original system.Also deposit sand device and the sand storage of original system simply can be transformed and obtained, also be about to inlet duct in sand cooling radiator cooler of the present invention and the multi-functional feed bin and be attached to depositing on sand device and the sand storage in the original system and get final product, also namely make in the original system deposit the sand device and sand storage becomes sand cooling radiator cooler of the present invention and multi-functional feed bin respectively.
(2) sand cooling radiator cooler of the present invention in use, feed a certain amount of dry air with uniform temperature, within it under the situation of not having other obstacle substantially of portion, the dry air of this uniform temperature directly and old sand collide and be in contact with one another, not only make old sand blown looselyr by air-flow in the landing down, also prolong the heat exchanger time of old sand and gas, and can fully contact also heat-shift with the gas that feeds, thereby realized the purpose of preliminary temperature adjustment.
(3) multi-functional feed bin of the present invention in use, feed a certain amount of dry air with uniform temperature, the dry air of this uniform temperature from bottom to up with multi-functional feed bin in old sand constantly collide and contact, old sand is from entering multi-functional feed bin until by 2 to 4 hours the process of emitting, thus substantially with enter multi-functional feed bin in all gas all carried out corresponding the contact and heat exchange.This is a process of being association of activity and inertia, old sand contacts and heat exchange with the gas that enters endlessly in storage, effect is very obvious, thereby realize the purpose of temperature adjustment, even make when environment temperature is higher than 25 ℃, the temperature of old sand when going out multi-functional feed bin can be lower than 35 ℃, solved a great problem in this area.
(4) when the winter environment temperature is low, when after a period of time that stops production, returning to work again, the sand temperature also can become lower with ambient temperature, the temperature that needs old sand in the suitable multi-functional feed bin of raising during use, in order to can return to work fast, therefore when using resin sand sand preparing system of the present invention, can also improve the temperature of old sand by the dry air that feeds uniform temperature, applied range.
Description of drawings
Fig. 1 is the structural representation of resin sand sand preparing system of the present invention;
Fig. 2 is sand cooling radiator cooler among Fig. 1 and the structural representation of multi-functional feed bin;
Fig. 3 is the A-A cutaway view among Fig. 2;
Fig. 4 is the B portion cutaway view Amplified image among Fig. 2;
Fig. 5 is the C portion cutaway view Amplified image among Fig. 2.
Mark in the above-mentioned accompanying drawing is as follows:
Swing crushing regenerating device 70, feed arrangement 81, old sand feed bin 81-1, feeder 81-2, bucket elevator 81-3 deposits sand device 80, sand cooling radiator cooler 82, sand regenerating unit 83, cooling bed 84, multi-functional feed bin 85, sand material air-flow conveying equipment 86, the first sand material air-flow conveying equipment 86-1, the second sand material air-flow conveying equipment 86-2, the 3rd sand material air-flow conveying equipment 86-3, compressed air unit 87, air conditioning unit 88, dust pelletizing system 89
Temperature adjustment storehouse 1, pre-heat exchange section 11, heat exchange segment 12, quick heat exchange segment 13, charging aperture 2, discharging opening 3, valve 4, inlet duct 5, sleeve pipe 51, last sleeve pipe 51a, setting of casing 51b, mounting flange 51-1, gas outlet 51-2, air inlet pipe 52, adpting flange 52-1, filter screen 53, gas outlet 6.
The specific embodiment
The description of the invention orientation is described according to concrete orientation shown in Figure 1, and Fig. 1 is description up and down up and down, is the front side towards the side of Fig. 1, and a side who deviates from Fig. 1 is rear side.
(embodiment 1)
See Fig. 1, resin sand sand preparing system involving vibrations crushing regenerator 70 of the present invention, feed arrangement 81, deposit sand device 80, sand cooling radiator cooler 82, sand regenerating unit 83, cooling bed 84, multi-functional feed bin 85, sand material air-flow conveying equipment 86, compressed air unit 87, air conditioning unit 88, dust pelletizing system 89 and puddle mixer.The sand cooling radiator cooler 82 of present embodiment is identical with the structure of multi-functional feed bin 85, the amount of capacity difference, sand cooling radiator cooler 82 can be stored 20 tons to 100 tons sands (present embodiment is 40 tons), and multi-functional feed bin 85 can be stored 100 tons to 500 tons sands (present embodiment is 200 tons).The sand cooling radiator cooler 82 of present embodiment also is to deposit the sand device in the primary resin sand sand preparing system.The multi-functional feed bin 85 of present embodiment also is the sand storage in the primary resin sand sand preparing system.
See Fig. 2, the sand cooling radiator cooler 82 of present embodiment and multi-functional feed bin 85 include temperature adjustment storehouse 1, charging aperture 2, discharging opening 3, valve 4, inlet duct 5 and gas outlet 6.
See Fig. 2, without hindrance substantially block material in the temperature adjustment storehouse 1, temperature adjustment storehouse 1 is divided into pre-heat exchange section 11, heat exchange segment 12 and quick heat exchange segment 13 from top to bottom successively.Pre-heat exchange section 11 is the round platform housing that Open Side Down, and without hindrance block material in the inner chamber of round platform housing; Heat exchange segment 12 is cylindrical shell, and without hindrance block material in the inner chamber of this cylindrical shell; The upper end open of the cylindrical shell of heat exchange segment 12 is corresponding with the lower ending opening of pre-heat exchange section 11, and the two airtight connection; Fast heat exchange segment 13 be the reverse frustoconic housing of up/down perforation, and the upper end open of the rounding platform housing of quick heat exchange segment 13 and heat exchange segment 12 are that the lower ending opening of cylindrical shell is corresponding, and the two airtight connection.Charging aperture 2 and is connected with the inside in temperature adjustment storehouse 1 from the left side of the airtight pre-heat exchange section 11 that is fixedly connected on temperature adjustment storehouse 1 in upper left side.Charging aperture 2 is provided with corresponding valve and can controls charging aperture 2 and be in open mode or closed condition.Gas outlet 6 and is connected with the inside in temperature adjustment storehouse 1 from the right side of the airtight pre-heat exchange section 11 that is fixedly connected on temperature adjustment storehouse 1 in upper right side.Be provided with filter screen in the gas outlet 6, the mesh of filter screen is less than the particle diameter of bulk solids particle.Discharging opening 3 is the airtight lower ending opening that is fastened on the rounding platform housing of quick heat exchange segment 13 from the below, and is connected with the inside in temperature adjustment storehouse 1.Valve 4 arranges on the discharging opening 3, can emitting the material in the temperature adjustment storehouse 1 by opening valve 4.
See Fig. 2 to Fig. 5, inlet duct 5 comprises sleeve pipe 51 and air inlet pipe 52.Sleeve pipe 51 has 1 to 4 (present embodiment is 2), and the shape and structure of each sleeve pipe 51 is all identical.2 sleeve pipes 51 are divided into sleeve pipe 51a and setting of casing 51b by the difference of its residing upper-lower position.Each sleeve pipe 51 two ends is equipped with and is used for the mounting flange 51-1 of airtight fixedly connected air inlet pipe 52 accordingly.Sleeve pipe 51 is provided with the gas outlet 51-2 that Open Side Down at its middle part along its axis direction.Last sleeve pipe 51a to being horizontally disposed with, and runs through the quick heat exchange segment 13 in temperature adjustment storehouse 1 at fore-and-aft direction along front and back, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment 13 in temperature adjustment storehouse 1; The gas outlet 51-2 of last sleeve pipe 51a is arranged on its sagittal middle part, and is arranged in temperature adjustment storehouse 1; The mounting flange 51-1 of the rear and front end of last sleeve pipe 51a all is positioned at outside the temperature adjustment storehouse 1.Setting of casing 51b along about to being horizontally disposed with, and run through the quick heat exchange segment 13 in temperature adjustment storehouse 1 on the left and right directions, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment 13 in temperature adjustment storehouse 1; The gas outlet 51-2 of setting of casing 51b be arranged on about it to the middle part, and be arranged in temperature adjustment storehouse 1; The mounting flange 51-1 at the two ends, the left and right sides of setting of casing 51b all is positioned at outside the temperature adjustment storehouse 1; Setting of casing 51b is positioned at the below of sleeve pipe 51a.
See Fig. 2 to Fig. 4, the quantity of air inlet pipe 52 is 2 times of quantity of sleeve pipe 51.The shape and structure of each air inlet pipe 52 is all identical.Each air inlet pipe 52 is arranged in the corresponding sleeve pipe 51 by the end as the outlet side separately, each air inlet pipe 52 then be the pipeline section of giving vent to anger together with the outlet side at the interior pipeline section that is arranged in corresponding sleeve pipe 51; The gas outlet 51-2 of port near sleeve pipe 51 that give vent to anger of each air inlet pipe 52; Each air inlet pipe 52 is equipped with adpting flange 52-1 at its position near the pipeline section of giving vent to anger, and this adpting flange 52-1 is corresponding with the mounting flange 51-1 of sleeve pipe 51.Each air inlet pipe 52 is by mounting flange 51-1 airtight fixedly connected of its adpting flange 52-1 with sleeve pipe 51.It is 4 that the pipeline section of giving vent to anger of each air inlet pipe 52 is provided with 2 to 6 outgassing groove 52-2(present embodiments that run through inside and outside its tube wall).Each outgassing groove 52-2 is all along the axial setting of air inlet pipe 52, and between each outgassing groove 52-2 along the circumferentially uniformly-spaced angle setting of air inlet pipe 52.Be coated with filter screen 53 on the pipeline section of giving vent to anger of each air inlet pipe 52, the mesh of filter screen 53 is less than the particle diameter of bulk solids particle.
See Fig. 1, sand material air-flow conveying equipment 86 has 3, is called the first sand material air-flow conveying equipment 86-1, the second sand material air-flow conveying equipment 86-2 and the 3rd sand material air-flow conveying equipment 86-3 successively.Air conditioning unit 88 is connected respectively at the inlet duct 5 of sand cooling radiator cooler 82 and the inlet duct 5 of multi-functional feed bin 85 by corresponding pipeline and air-flow distributor, by air conditioning unit 88 dry air of 10 ℃ to 20 ℃ of temperature (present embodiment is 15 ℃) and flow 1200 cubic metres/hour to 3000 cubic metres/hour (present embodiment is 1800 cubic metres/hour) is sent into the dry air of corresponding discharge in corresponding sand cooling radiator cooler 82 and the multi-functional feed bin 85 respectively in the ratio of 1:5 by air-flow distributor.Compressed air unit 87 is connected with the air inlet of corresponding each sand material air-flow conveying equipment 86 respectively by corresponding pipeline, and compressed air unit 87 is sent into compressed air in each sand material air-flow conveying equipment 86.
Swing crushing regenerating device 70 is arranged on the corresponding pedestal.Feed arrangement 81 comprises old sand feed bin 81-1, feeder 81-2 and bucket elevator 81-3.Old sand feed bin 81-1 is arranged on the corresponding pedestal, and is positioned at the below of the discharging opening of swing crushing regenerating device 70.Feeder 81-2 is positioned at the below of the discharging opening of old sand feed bin 81-1, old sand is sent in the hopper of bucket elevator 81-3 by feeder 81-2, by bucket elevator 81-3 old sand is sent into by the charging aperture of depositing sand device 80 by corresponding pipeline and is deposited in the sand device 80.Old sand is discharged the back by the discharging opening of depositing sand device 80 through valve again and is entered the centrifugal regenerating device of S52 series that sand regenerating unit 83(sand regenerating unit 83 adopts Qingdao casting smelting machinery Co., Ltd to produce by corresponding pipeline), old sand grinds off through the resin molding of mechanical friction with the old sand surface in sand regenerating unit 83, resin molding under coming off and micro mist are reclaimed and are handled accordingly by dust pelletizing system 89 through corresponding wind selecting separator.Sand regenerating unit 83 is connected by the charging aperture of corresponding pipeline with the first sand material air-flow conveying equipment 86-1.The discharging opening of the first sand material air-flow conveying equipment 86-1 is connected with the charging aperture 2 of sand cooling radiator cooler 82 by corresponding pipeline; Old sand is sent into by the first sand material air-flow conveying equipment 86-1 and corresponding pipeline and is carried out the fast cooling processing in the sand cooling radiator cooler 82, and the dry air after the heat absorption is discharged by dust pelletizing system 89 6 outflow backs from the gas outlet.The discharging opening 3 of sand cooling radiator cooler 82 is connected with cooling bed 84 charging aperture by corresponding pipeline; Old sand after cooling is handled enters cooling bed 84 processing of lowering the temperature accordingly again by corresponding pipeline.Cooling bed 84 discharging opening is connected by the charging aperture of corresponding pipeline with the second sand material air-flow conveying equipment 86-2; The discharging opening of the second sand material air-flow conveying equipment 86-2 is connected with the charging aperture 2 of multi-functional feed bin 85 by corresponding pipeline; Old sand is transported to the multi-functional feed bin 85 by the second sand material air-flow conveying equipment 86-2 and corresponding pipeline after cooling bed 84 come out, old sand enters multi-functional feed bin 85 and deposits, the processing of lowering the temperature again when depositing, old sand needs 2 hours to 4 hours (present embodiment is 3 hours) from entering multi-functional feed bin 85 to discharging from multi-functional feed bin 85.The discharging opening 3 of multi-functional feed bin 85 is connected by the charging aperture of corresponding pipeline with the 3rd sand material air-flow conveying equipment 86-3; The discharging opening of the 3rd sand material air-flow conveying equipment 86-3 is connected by the charging aperture of corresponding pipeline with the puddle mixer of production scene; Old sand is delivered in the puddle mixer of production scene by the 3rd sand material air-flow conveying equipment 86-3 and corresponding pipeline after being emitted by multi-functional feed bin 85 immediately, and through behind puddle mixer and corresponding curing agent, the abundant mixing of resin for use, the sand temperature was substantially at 25 ℃ to 35 ℃ when old sand entered puddle mixer.Swing crushing regenerating device 70, deposit sand device 80, sand cooling radiator cooler 82, sand regenerating unit 83, cooling bed 84 and multi-functional feed bin 85 in corresponding waste gas and dust by corresponding pipeline by dust pelletizing system 89 recycling back discharges.
The method of work of the resin sand sand preparing system of present embodiment has following steps:
A, elder generation send old sand into swing crushing regenerating device 70 and carry out fragmentation, preliminary demoulding and screening, then the old sand that sieves out is sent among the old sand feed bin 81-1 of feed arrangement 81 through the discharging opening of swing crushing regenerating device 70, by feeder 81-2 the old sand among the old sand feed bin 81-1 is sent in the hopper of bucket elevator 81-3, by bucket elevator 81-3 old sand is sent into by the charging aperture of depositing sand device 80 and deposited in the sand device 80; The temperature of old sand is greatly about 90 ℃ to 150 ℃ at this moment.
B, old sand enter sand regenerating unit 83 after being discharged through valve by the discharging opening of depositing sand device 80, old sand grinds off through the resin molding of mechanical friction with the old sand surface in sand regenerating unit 83, resin molding under coming off and micro mist are reclaimed and are handled accordingly by dust pelletizing system 89 through corresponding wind selecting separator.
C, old sand are sent into by the first sand material air-flow conveying equipment 86-1 and are carried out the fast cooling processing in the sand cooling radiator cooler 82; Be in 10 ℃ to 20 ℃ the dry air input temperature adjustment storehouse 1 with temperature by the air inlet pipe 52 of air conditioning unit 88 by corresponding conveyance conduit and sand cooling radiator cooler 82, and make the old sand temperature reduce by 8 ℃ to 15 ℃ (present embodiment is 10 ℃) fast, and adjust the flow (present embodiment is 300 cubic metres/hour) of dry air on this basis; Old sand falls to being emitted until quilt of sand cooling radiator cooler 82 bottoms and needs 20 to 30 minutes under the gravity effect, in this process, old sand fully contacts through pre-heat exchange section 11, heat exchange segment 12 and the quick heat exchange segment 13 in temperature adjustment storehouse 1 and with dry air successively, and the dry air after the heat absorption is discharged by dust pelletizing system 89 6 outflow backs from the gas outlet.
D, the old sand after 82 coolings are handled through the sand cooling radiator cooler enter cooling bed 84 processing of lowering the temperature accordingly again from entering after sand cooling radiator cooler 82 is emitted; Old sand reduces by 5 ℃ to 10 ℃ of temperature (present embodiment is 7 ℃) through cooling bed 84.
E, old sand are transported to the multi-functional feed bin 85 by the second sand material air-flow conveying equipment 86-2 after cooling bed 84 come out, and old sand enters multi-functional feed bin 85 and deposits, the processing of lowering the temperature again when depositing; Be that 10 ℃ to 20 ℃ dry air is imported in the temperature adjustment storehouse 1 of multi-functional feed bin 85 by the air inlet pipe 52 of air conditioning unit 88 by corresponding conveyance conduit and multi-functional feed bin 85 with temperature, and regulate the flow (present embodiment is 1500 cubic metres/hour) of dry air accordingly, make the old sand temperature finally be reduced to 25 ℃ to 35 ℃; Old sand falls to being needed through 3 to 4 hours until emitting of multi-functional feed bin 85 bottoms under the gravity effect, in this process, old sand fully contacts through pre-heat exchange section 11, heat exchange segment 12 and the quick heat exchange segment 13 in temperature adjustment storehouse 1 and with dry air successively, and the dry air after the heat absorption is discharged by dust pelletizing system 89 6 outflow backs from the gas outlet; Old sand by the 3rd sand material air-flow conveying equipment 86-3 be delivered to the production scene and through behind puddle mixer and corresponding curing agent, the abundant mixing of resin for use.
Above embodiment is only for the usefulness that the present invention is described; but not limitation of the present invention; person skilled in the relevant technique is under the situation that does not break away from the spirit and scope of the present invention; can also make various conversion and variation; can also transform accordingly according to the inspiration of above-described embodiment in the concrete application process, so all technical schemes that are equal to all should be included within the scope of patent protection of the present invention.
Claims (6)
1. resin sand sand preparing system, is deposited sand device (80), sand cooling radiator cooler (82), sand regenerating unit (83), cooling bed (84), multi-functional feed bin (85), sand material air-flow conveying equipment (86), compressed air unit (87), air conditioning unit (88), dust pelletizing system (89) and puddle mixer at involving vibrations crushing regenerator (70), feed arrangement (81); It is characterized in that: sand cooling radiator cooler (82) is identical with the structure of multi-functional feed bin (85), the amount of capacity difference, and sand cooling radiator cooler (82) can be stored 20 tons to 100 tons sands, and multi-functional feed bin (85) can be stored 100 tons to 500 tons sands; Sand cooling radiator cooler (82) and multi-functional feed bin (85) include temperature adjustment storehouse (1), charging aperture (2), discharging opening (3), valve (4), inlet duct (5) and gas outlet (6); Substantially without hindrance block material in the temperature adjustment storehouse (1); Charging aperture (2) and is connected with the inside of temperature adjustment storehouse (1) from the airtight left side that is fixedly connected on temperature adjustment storehouse (1), upper left side; Gas outlet (6) and is connected with the inside of temperature adjustment storehouse (1) from the airtight right side that is fixedly connected on temperature adjustment storehouse (1), upper right side; Discharging opening (3) and is connected with the inside of temperature adjustment storehouse (1) from the airtight centre, bottom that is fastened on temperature adjustment storehouse (1), below; Valve (4) arranges on the discharging opening (3), the material in temperature adjustment storehouse (1) can be emitted by opening valve (4); Inlet duct (5) passes the bottom of temperature adjustment storehouse (1), and is fixed on the lower, outer perimeter of temperature adjustment storehouse (1), and the position of giving vent to anger of inlet duct (5) is arranged in the inner chamber of temperature adjustment storehouse (1);
Sand material air-flow conveying equipment (86) has 3, is called the first sand material air-flow conveying equipment (86-1), the second sand material air-flow conveying equipment (86-2) and the 3rd sand material air-flow conveying equipment (86-3) successively; Air conditioning unit (88) is connected with the inlet duct (5) of sand cooling radiator cooler (82) and multi-functional feed bin (85) respectively by corresponding pipeline and air-flow distributor, and the assignment of traffic ratio of air-flow distributor is 1:5; Compressed air unit (87) is connected with the air inlet of corresponding each sand material air-flow conveying equipment (86) respectively by corresponding pipeline;
Swing crushing regenerating device (70) is arranged on the corresponding pedestal; Feed arrangement (81) comprises old sand feed bin (81-1), feeder (81-2) and bucket elevator (81-3); Old sand feed bin (81-1) is arranged on the corresponding pedestal, and is positioned at the below of the discharging opening of swing crushing regenerating device (70); Feeder (81-2) is positioned at the below of the discharging opening of old sand feed bin (81-1), feeder (81-2) is sent into old sand in the hopper of bucket elevator (81-3), by bucket elevator (81-3) old sand is sent into by the charging aperture of depositing sand device (80) by corresponding pipeline and is deposited in the sand device (80); Old sand is discharged the back by the discharging opening of depositing sand device (80) through valve again and is entered sand regenerating unit (83) by corresponding pipeline, and sand regenerating unit (83) is connected by the charging aperture of corresponding pipeline with the first sand material air-flow conveying equipment (86-1); The discharging opening of the first sand material air-flow conveying equipment (86-1) is connected with the charging aperture (2) of sand cooling radiator cooler (82) by corresponding pipeline; The discharging opening (3) of sand cooling radiator cooler (82) is connected by the charging aperture of corresponding pipeline with cooling bed (84); The discharging opening of cooling bed (84) is connected by the charging aperture of corresponding pipeline with the second sand material air-flow conveying equipment (86-2); The discharging opening of the second sand material air-flow conveying equipment (86-2) is connected with the charging aperture (2) of multi-functional feed bin (85) by corresponding pipeline; The discharging opening (3) of multi-functional feed bin (85) is connected by the charging aperture of corresponding pipeline with the 3rd sand material air-flow conveying equipment (86-3); The discharging opening of the 3rd sand material air-flow conveying equipment (86-3) is connected by the charging aperture of corresponding pipeline with the puddle mixer of production scene; Swing crushing regenerating device (70), the gas outlet separately of depositing sand device (80), sand cooling radiator cooler (82), sand regenerating unit (83), cooling bed (84) and multi-functional feed bin (85) are connected with dust pelletizing system (89) by corresponding pipeline.
2. resin sand sand preparing system according to claim 1, it is characterized in that: inlet duct (5) comprises sleeve pipe (51) and air inlet pipe (52);
Sleeve pipe (51) has 1 to 4, and the shape and structure of each sleeve pipe (51) is all identical; Each sleeve pipe (51) two ends are equipped with and are used for the mounting flange (51-1) of airtight fixedly connected air inlet pipe (52) accordingly; Sleeve pipe (51) is provided with the gas outlet that Open Side Down (51-2) at its middle part along its axis direction, also is the position of giving vent to anger of inlet duct (5); Each sleeve pipe (51) all arranges along the temperature adjustment storehouse (1) of radially running through of temperature adjustment storehouse (1), and the mounting flange at two ends (51-1) is positioned at outside the temperature adjustment storehouse (1), and gas outlet (51-2) is arranged in temperature adjustment storehouse (1); Each sleeve pipe (51) sets gradually from top to bottom, and circumferentially is uniformly-spaced angle setting along temperature adjustment storehouse (1); Each sleeve pipe (51) and airtight the fixedlying connected of the contacted part in temperature adjustment storehouse (1);
The quantity of air inlet pipe (52) is 2 times of quantity of sleeve pipe (51); The shape and structure of each air inlet pipe (52) is all identical; Each air inlet pipe (52) is arranged in the corresponding sleeve pipe (51) by the end as the outlet side separately, each air inlet pipe (52) then be the pipeline section of giving vent to anger together with the outlet side at the interior pipeline section that is arranged in corresponding sleeve pipe (51); The gas outlet (51-2) of port near sleeve pipe (51) of giving vent to anger of each air inlet pipe (52); Each air inlet pipe (52) is equipped with adpting flange (52-1) at its position near the pipeline section of giving vent to anger, and this adpting flange (52-1) is corresponding with the mounting flange (51-1) of sleeve pipe (51); Each air inlet pipe (52) is by mounting flange (51-1) airtight fixedly connected of its adpting flange (52-1) with sleeve pipe (51).
3. resin sand sand preparing system according to claim 2 is characterized in that: temperature adjustment storehouse (1) is divided into pre-heat exchange section (11), heat exchange segment (12) and heat exchange segment (13) fast from top to bottom successively; Pre-heat exchange section (11) is the round platform housing that Open Side Down, and without hindrance block material in the inner chamber of round platform housing; Heat exchange segment (12) is cylindrical shell, and without hindrance block material in the inner chamber of this cylindrical shell; The upper end open of the cylindrical shell of heat exchange segment (12) is corresponding with the lower ending opening of pre-heat exchange section (11), and the two airtight connection; Fast heat exchange segment (13) be the reverse frustoconic housing of up/down perforation, and the upper end open of the rounding platform housing of quick heat exchange segment (13) and heat exchange segment (12) are that the lower ending opening of cylindrical shell is corresponding, and the two airtight connection; Charging aperture (2) is from the left side of the airtight pre-heat exchange section (11) that is fixedly connected on temperature adjustment storehouse (1) in upper left side; Charging aperture (2) is provided with corresponding valve and can controls charging aperture (2) and be in open mode or closed condition; Gas outlet (6) is from the right side of the airtight pre-heat exchange section (11) that is fixedly connected on temperature adjustment storehouse (1) in upper right side; The gas outlet is provided with filter screen in (6), and the mesh of filter screen is less than the particle diameter of bulk solids particle; Discharging opening (3) is the airtight lower ending opening that is fastened on the rounding platform housing of quick heat exchange segment (13) from the below.
4. resin sand sand preparing system according to claim 3, it is characterized in that: sleeve pipe (51) has 2; 2 sleeve pipes (51) are divided into sleeve pipe (51a) and setting of casing (51b) by the difference of its residing upper-lower position; Last sleeve pipe (51a) to being horizontally disposed with, and runs through the quick heat exchange segment (13) in temperature adjustment storehouse (1) at fore-and-aft direction along front and back, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment (13) of temperature adjustment storehouse (1); Setting of casing (51b) along about to being horizontally disposed with, and run through the quick heat exchange segment (13) in temperature adjustment storehouse (1) on the left and right directions, and with airtight the fixedlying connected in the place of being in contact with one another of the quick heat exchange segment (13) of temperature adjustment storehouse (1); Setting of casing (51b) is positioned at the below of sleeve pipe (51a).
5. according to the described resin sand sand preparing system of one of claim 2 to 4, it is characterized in that: the pipeline section of giving vent to anger of each air inlet pipe (52) is provided with 2 to 6 outgassing grooves (52-2) that run through inside and outside its tube wall; Each outgassing groove (52-2) is all along the axial setting of air inlet pipe (52), and between each outgassing groove (52-2) along the circumferentially uniformly-spaced angle setting of air inlet pipe (52); Be coated with filter screen (53) on the pipeline section of giving vent to anger of each air inlet pipe (52), the mesh of filter screen (53) is less than the particle diameter of bulk solids particle.
6. the method for work of the described resin sand sand preparing system of claim 5 is characterized in that having following steps:
A, elder generation send old sand into swing crushing regenerating device (70) and carry out fragmentation, preliminary demoulding and screening, then the old sand that sieves out is sent in the old sand feed bin (81-1) of feed arrangement (81) through the discharging opening of swing crushing regenerating device (70), by feeder (81-2) old sand in the old sand feed bin (81-1) is sent in the hopper of bucket elevator (81-3), by bucket elevator (81-3) old sand is sent into by the charging aperture of depositing sand device (80) and deposited in the sand device (80); The temperature of old sand is greatly about 90 ℃ to 150 ℃ at this moment;
B, old sand enter sand regenerating unit (83) after being discharged through valve by the discharging opening of depositing sand device (80), old sand grinds off through the resin molding of mechanical friction with the old sand surface in sand regenerating unit (83), resin molding under coming off and micro mist are reclaimed and are handled accordingly by dust pelletizing system (89) through corresponding wind selecting separator;
C, old sand are sent into by the first sand material air-flow conveying equipment (86-1) and are carried out the fast cooling processing in the sand cooling radiator cooler (82); Be in 10 ℃ to 20 ℃ the dry air input temperature adjustment storehouse (1) with temperature by the air inlet pipe (52) of air conditioning unit (88) by corresponding conveyance conduit and sand cooling radiator cooler (82), and make the old sand temperature reduce by 8 ℃ to 15 ℃ fast, and adjust the flow of dry air on this basis; Old sand falls to sand cooling radiator cooler (82) under the gravity effect bottom is needed 20 to 30 minutes until emitting, in this process, old sand passes through pre-heat exchange section (11), heat exchange segment (12) and the quick heat exchange segment (13) in temperature adjustment storehouse (1) successively and fully contacts with dry air, and the dry air after the heat absorption flows out the back from the gas outlet (6) of sand cooling radiator cooler (82) discharges by dust pelletizing system (89);
D, the old sand after cooling is handled through sand cooling radiator cooler (82) enter cooling bed (84) processing of lowering the temperature accordingly again from entering after sand cooling radiator cooler (82) is emitted; Old sand reduces by 5 ℃ to 10 ℃ of temperature through cooling bed (84);
E, old sand are transported to the multi-functional feed bin (85) by the second sand material air-flow conveying equipment (86-2) after come out cooling bed (84), and old sand enters multi-functional feed bin (85) and deposits, the processing of lowering the temperature again when depositing; Be that 10 ℃ to 20 ℃ dry air is imported in the temperature adjustment storehouse (1) of multi-functional feed bin (85) by the air inlet pipe (52) of air conditioning unit (88) by corresponding conveyance conduit and multi-functional feed bin (85) with temperature, and the flow of regulating dry air accordingly make the old sand temperature finally be reduced to 25 ℃ to 35 ℃; Old sand falls to multi-functional feed bin (85) under the gravity effect bottom is needed through 3 to 4 hours until emitting, in this process, old sand passes through pre-heat exchange section (11), heat exchange segment (12) and the quick heat exchange segment (13) in temperature adjustment storehouse (1) successively and fully contacts with dry air, and the dry air after the heat absorption flows out the back from the gas outlet (6) of multi-functional feed bin (85) discharges by dust pelletizing system (89); Old sand by the 3rd sand material air-flow conveying equipment (86-3) be delivered to the production scene and through behind puddle mixer and corresponding curing agent, the abundant mixing of resin for use.
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| CN 201210115841 CN102649149B (en) | 2012-04-18 | 2012-04-18 | Resin sand processing system and work method thereof |
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| CN 201210115841 CN102649149B (en) | 2012-04-18 | 2012-04-18 | Resin sand processing system and work method thereof |
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| CN103722133A (en) * | 2013-11-27 | 2014-04-16 | 铜陵市经纬流体科技有限公司 | Combined filling sand processing box for casting |
| CN104107877B (en) * | 2014-06-30 | 2016-01-13 | 常州市姚氏铸造材料有限公司 | Sand cooling radiator cooler |
| CN104841879B (en) * | 2015-05-12 | 2016-08-31 | 共享装备有限公司 | Foundry resin ash negative-pressure conveying system |
| CN109128026A (en) * | 2018-10-11 | 2019-01-04 | 嵊州市华明机械铸造股份有限公司 | A kind of method of iron ball casting |
| CN109434015B (en) * | 2018-11-15 | 2023-12-26 | 重庆长江造型材料（集团）股份有限公司 | Roasting sand feeding and discharging device |
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| JPS59200187A (en) * | 1983-04-28 | 1984-11-13 | Ishikawajima Harima Heavy Ind Co Ltd | Cooling device of high temperature granules |
| US5391355A (en) * | 1993-07-21 | 1995-02-21 | Eastman Chemical Company | Vessel for the treatment of particulate materials |
| US5526938A (en) * | 1994-10-07 | 1996-06-18 | The Babcock & Wilcox Company | Vertical arrangement fluidized/non-fluidized bed classifier cooler |
| US7438119B2 (en) * | 2004-03-19 | 2008-10-21 | Consolidated Engineering Company, Inc. | System for heat treating castings and reclaiming sand |
| CN102233405A (en) * | 2010-04-27 | 2011-11-09 | 于彦奇 | Digital resin sand regeneration system |
| CN201760554U (en) * | 2010-06-29 | 2011-03-16 | 上海红雀机电设备有限公司 | Integrated self-hardening sand treatment stream line |
| CN102091756A (en) * | 2010-12-02 | 2011-06-15 | 苏州苏铸成套装备制造有限公司 | Pneumatic conveying device |
| CN202162331U (en) * | 2011-07-27 | 2012-03-14 | 安徽省宁国新宁实业有限公司 | Old cast sand recovery and processing equipment |
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Address after: 213003 Jiangsu province Changzhou City Tianning District Hualong Lane home garden 11 Room 401 a unit Patentee after: CHANGZHOU YAOSHI FOUNDING MATERIAL CO.,LTD. Address before: 213000, building 15, South 5, Xinshi Road, bell tower, Changzhou, Jiangsu Patentee before: CHANGZHOU YAOSHI FOUNDING MATERIAL CO.,LTD. |
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Granted publication date: 20130918 |