CN211539467U - High-efficient environmental protection lost foam casting production system - Google Patents
High-efficient environmental protection lost foam casting production system Download PDFInfo
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- CN211539467U CN211539467U CN201922167541.4U CN201922167541U CN211539467U CN 211539467 U CN211539467 U CN 211539467U CN 201922167541 U CN201922167541 U CN 201922167541U CN 211539467 U CN211539467 U CN 211539467U
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- 238000010114 lost-foam casting Methods 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 230000007613 environmental effect Effects 0.000 title description 8
- 238000001035 drying Methods 0.000 claims abstract description 77
- 239000006260 foam Substances 0.000 claims abstract description 41
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 28
- 244000035744 Hura crepitans Species 0.000 claims abstract description 27
- 239000000872 buffer Substances 0.000 claims description 24
- 230000003139 buffering effect Effects 0.000 claims description 16
- 235000002245 Penicillium camembertii Nutrition 0.000 claims description 7
- 239000000706 filtrate Substances 0.000 claims description 7
- 241000221696 Sclerotinia sclerotiorum Species 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 abstract description 17
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000002912 waste gas Substances 0.000 description 14
- 238000005266 casting Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008034 disappearance Effects 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a high-efficiency environment-friendly lost foam casting production system, which comprises a pouring device, wherein the pouring device comprises a pouring pipe, a sand box, a vacuum box and a vacuum pump, and one side of the vacuum box is connected with the vacuum pump through a pipeline; the sand box is placed inside the vacuum box, the foam model is arranged in the sand box, the pouring channel communicated with the foam model is further arranged in the sand box, the tail end of the pouring pipe is connected with a spiral liquid outlet pipe, and the liquid outlet section of the spiral liquid outlet pipe extends into the pouring channel. Through setting up the spiral drain pipe, molten metal enters into the spiral drain pipe through the pouring pipe, and the spiral drain pipe has prolonged the time that molten metal was carried, and the heat distributes out through the spiral drain pipe wall, preheats sand box and vacuum chamber, when drying the surperficial moisture of foam model for dry sand in the sand box can preheat by a period in advance, reduces the sensitive degree of dry sand to the temperature, avoids dry sand to collapse.
Description
Technical Field
The utility model relates to a lost foam casting technical field, concretely relates to high-efficient environmental protection lost foam casting production system.
Background
The lost foam casting is a novel casting method which comprises the steps of bonding and combining paraffin or foam models with similar sizes and shapes to form a model cluster, coating refractory paint, drying, burying in dry quartz sand for vibration modeling, pouring under negative pressure to enable the model to be gasified, enabling liquid metal to occupy the position of the model, solidifying and cooling to form the casting. The lost foam casting has the advantages of high gradual precision, flexible design, clean production and the like, and is widely applied to casting in the mechanical field.
Traditional pouring device of disappearance mould casting foundry goods, including vacuum cabinet, sand box, disappearance mould model and the pouring pipeline that leads to the disappearance mould model, wherein disappear the mould model and place in the sand box, the sand box has built-in the dry sand that covers the disappearance mould model, and the upper end of pouring pipeline is provided with the feed inlet, can flow into the feed inlet with high-temperature molten metal through vacuum negative pressure like this, later get into in the pouring pipeline, gasify the disappearance mould model in the sand box at last, and high-temperature molten metal occupies the position of model.
When water is remained on the outer surface of the lost foam model, a large amount of water vapor is generated when high-temperature molten metal is contacted with a refractory coating, so that more holes or air holes are formed in the manufactured casting, and the quality of the casting is influenced; when the high-temperature molten metal is poured into the lost foam model, the impact force of the high-temperature molten metal is large, the sensitivity of the dry sand to the temperature is high, and the fixed and formed dry sand is easy to collapse, so that the shape of the formed casting does not meet the standard.
Benzene waste gas produced by lost foam casting is seriously polluted, and the traditional waste gas is directly discharged into the atmosphere, so that the atmosphere is polluted and the physical health of operators is seriously influenced.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-efficient environmental protection lost foam casting production system, it can dry to lost foam model when the pouring, improves the foundry goods quality and prevents that the dry sand from collapsing.
In order to achieve the above purpose, the solution of the present invention is:
a high-efficiency environment-friendly lost foam casting production system comprises a pouring device, wherein the pouring device comprises a pouring pipe, a sand box, a vacuum box and a vacuum pump, and one side of the vacuum box is connected with the vacuum pump through a pipeline; the sand box is placed inside the vacuum box, a foam model is arranged in the sand box, a pouring channel communicated with the foam model is further arranged in the sand box, the tail end of the pouring pipe is connected with a spiral liquid outlet pipe, and a liquid outlet section of the spiral liquid outlet pipe extends into the pouring channel.
Furthermore, a driving device for driving the spiral liquid outlet pipe to move up and down is further arranged on the vacuum box.
Furthermore, the melting point of the spiral liquid outlet pipe is higher than the temperature of the poured molten metal.
Further, a buffer device and a filter tank are arranged between the vacuum box and the vacuum pump; the filter tank is internally provided with filtrate, an inlet pipeline and an outlet pipeline are also formed on the filter tank, and the lower end of the inlet pipeline is positioned below the liquid level of the filtrate; the inlet end of the buffer device is connected with the vacuum box through a pipeline, the filter tank is connected with the outlet of the buffer device through an input pipeline, and the filter tank is connected with the inlet of the vacuum pump through an outlet pipeline.
Further, buffer includes inner tube and urceolus, the urceolus coaxial sleeve is established on the inner tube, be provided with the sealing washer between inner tube and the urceolus, the urceolus with the inner tube encloses into a buffering appearance chamber, the volume that buffers the appearance chamber is along the urceolus changes along inner tube axial displacement, buffer's entry end forms on the inner tube, and buffer's exit end forms on the urceolus, the buffering appearance chamber with buffer's entry end and exit end are linked together.
Further, a limiting clamping block is arranged on the outer wall of the inner cylinder, a limiting clamping ring is connected to the lower end face of the outer cylinder through a bolt, and when the outer cylinder moves to the maximum position relative to the inner cylinder, the limiting clamping ring abuts against the limiting clamping block.
Further, the lost foam casting production system also comprises a white mold pre-drying device, wherein the white mold pre-drying device comprises a drying tunnel, an air inlet pipe, a conveying track and a conveying trolley; a conveying track is arranged in the drying tunnel, the foam model is placed on the conveying trolley, and the conveying trolley moves in the drying tunnel along the conveying track; the drying tunnel comprises an inner wall and an outer wall, an air guide cavity is formed between the inner wall and the outer wall, the air inlet pipe is connected to one side of the outlet end of the drying tunnel and communicated with the air guide cavity, and a plurality of groups of air outlet units distributed at intervals along the length direction of the drying tunnel are formed on the inner wall of the drying tunnel.
Furthermore, a plurality of guide plates which are in one-to-one correspondence with the plurality of groups of air outlet units are formed in the air guide cavity, one ends of the guide plates are connected to the outer wall, one ends of the guide plates, which are far away from the outer wall, are inclined towards the inlet direction of the drying tunnel, and the guide areas of the guide plates are gradually increased from the outlet end to the inlet end of the drying tunnel; each group of air outlet units comprises a plurality of air outlet holes distributed along the circumferential direction of the drying tunnel.
Further, the conveying tracks are connected end to end, the conveying trolley moves along the conveying tracks in the drying tunnel from the inlet end to the outlet end of the drying tunnel, and the conveying trolley moves along the conveying tracks outside the drying tunnel from the outlet end to the inlet end of the drying tunnel; the conveying trolley comprises a trolley body, and a white mould placing device which is detachably connected to the trolley body and used for placing the foam model is arranged on the trolley body.
After the structure of the oil adding device is adopted, the utility model relates to a high-efficient environmental protection lost foam casting production system, it has following beneficial effect at least:
one, through setting up the spiral drain pipe, the molten metal passes through the pouring pipe enters into in the spiral drain pipe, the time that the molten metal was carried has been prolonged to the spiral drain pipe, and the heat passes through the spiral drain pipe wall distributes out, preheats sand box and vacuum chamber, when drying the surperficial moisture of foam model for the dry sand in the sand box can preheat by a period in advance, reduces the sensitive degree of dry sand to the temperature, avoids the dry sand to collapse.
Secondly, simultaneously, the velocity of flow of molten metal has been slowed down to the spiral drain pipe, and the molten metal of high temperature is slow flows from the export of spiral liquid outlet, has reduced the impact force to dry sand, has further reduced the emergence that dry sand collapses.
Compared with the prior art, the utility model discloses a spiral drain pipe has reduced the velocity of flow of molten metal, can further dry the moisture on foam model surface simultaneously for cast product has better product quality.
Drawings
Fig. 1 is the utility model relates to an overall structure schematic diagram of high-efficient environmental protection lost foam casting production system.
Fig. 2 and 3 are schematic sectional structures of the buffer device.
Fig. 4 and 5 are schematic structural views of spiral liquid outlet pipes.
Fig. 6 to 8 are schematic perspective views of the white mold pre-drying device.
Fig. 9 is an enlarged view of the structure at a in fig. 8.
Fig. 10 is a schematic structural view of a drying tunnel.
Fig. 11 and 12 are schematic views of the internal structure of the drying tunnel.
Fig. 13 to 15 are schematic structural views of the conveying trolley.
Fig. 16 is a rear structure view of the drying tunnel.
In the figure: drying the tunnel 1; an intake pipe 11; a conveying rail 12; an inner wall 13; an outer wall 14; a gas-conducting chamber 15; a flow guide plate 151; an air outlet 16; a pushing device 17; a hydraulic cylinder 171; a rotating bracket 172; the turning handle 173; a rack 18; a fixed bracket 19;
a conveying trolley 2; a frame 21; a wheel 22; a fixed seat 23; a rotating shaft 24;
placing the cage 25; a sleeve 251; a cage body 252; a cage cover 253; a partition plate 254; a fixing nut 255; a cylindrical gear 26;
a first bevel gear 271; a second bevel gear 272; a first pulley 273; a second pulley 274; a belt 275; a sand box 4; a pouring tube 41; a spiral liquid outlet pipe 411; a jacking cylinder 412; a vacuum box 42; a pouring channel 43;
an inner cylinder 51; a limit fixture block 511; a seal ring 512; an outer tub 52; a limit snap ring 521; a filtration tank 6; an inlet duct 61; an outlet conduit 62; a vacuum pump 7; a foam pattern 8.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 to 16, the high-efficiency environment-friendly lost foam casting production system according to the present invention comprises a pouring device, the pouring device comprises a pouring pipe 41, a sand box 4, a vacuum box 42, and a vacuum pump 7, wherein one side of the vacuum box 42 is connected to the vacuum pump 7 through a pipeline; the sand box 4 is placed in the vacuum box 42, the foam model 8 is arranged in the sand box 4, the pouring channel 43 communicated with the foam model 8 is further arranged in the sand box 4, the tail end of the pouring pipe 41 is connected with a spiral liquid outlet pipe 411, and a liquid outlet section of the spiral liquid outlet pipe 411 extends into the pouring channel 43.
Thus, the utility model relates to a high-efficient environmental protection lost pattern casting production system that disappears, through setting spiral drain pipe 411, molten metal passes through pouring pipe 41 gets into extremely in the spiral drain pipe 411, spiral drain pipe 411 has prolonged the time that molten metal was carried, and the heat passes through spiral drain pipe 411 pipe wall distributes out, preheats sand box 4 and vacuum chamber 42, when drying the moisture on foam model 8 surface for dry sand in the sand box 4 can preheat by a period in advance, reduces the sensitive degree of dry sand to the temperature, avoids the dry sand to collapse. Simultaneously, the velocity of flow of molten metal has been slowed down to spiral drain pipe 411, and the molten metal of high temperature is slow flows from the export of spiral liquid outlet, has reduced the impact force to dry sand, has further reduced the emergence that dry sand collapses.
Preferably, the vacuum box 42 is further provided with a driving device for driving the spiral liquid outlet pipe 411 to move up and down. Before pouring molten metal, the spiral liquid outlet pipe 411 is driven by the driving device to be positioned in the pouring channel 43, and after pouring, the driving device drives the spiral liquid outlet pipe 411 to leave the driving device so as to prevent excessive molten metal in the pouring channel 43 from being cooled and solidified to solidify the spiral liquid outlet pipe 411. Furthermore, the driving device includes two propping cylinders 412 disposed on the vacuum box 42, and a piston rod of the propping cylinder 412 is connected to the spiral liquid outlet pipe 411. When the piston rod of the propping cylinder 412 extends, the spiral liquid outlet pipe 411 is driven to move upwards.
Further, the spiral-shaped outlet pipe 411 is detachably connected to the end of the pouring tube 41. Preferably, the spiral-shaped liquid outlet pipe 411 has a melting point higher than the temperature of the poured metal melt. Thus, the spiral liquid outlet pipe 411 can maintain a certain strength when the molten metal flows through the spiral liquid outlet pipe 411. Meanwhile, when the pouring metal is adhered in the spiral liquid outlet pipe 411, the spiral liquid outlet pipe 411 can be detached from the pouring pipe 41, and the molten metal can be separated automatically by heating the spiral liquid outlet pipe 411 to a temperature higher than the melting point of the pouring metal and lower than the temperature of the spiral liquid outlet pipe 411.
The waste gas generated by the traditional lost foam casting system is directly discharged into the atmosphere, and in order to reduce the pollution of the waste gas, a buffer device and a filter tank 6 are preferably arranged between the vacuum box 42 and the vacuum pump 7; the filter tank 6 is internally provided with filtrate, the filter tank 6 is also provided with an inlet pipeline 61 and an outlet pipeline 62, and the lower end of the inlet pipeline 61 is positioned below the liquid level of the filtrate; the inlet end of the buffer device is connected with the vacuum box 42 through a pipeline, the filter tank 6 is connected with the outlet of the buffer device through an input pipeline, and the filter tank 6 is connected with the inlet of the vacuum pump 7 through an outlet pipeline 62. The vacuum pump 7 is operated to generate a negative pressure so that the pressure in the vacuum tank 42 becomes a negative pressure. When pouring is carried out, waste gas generated by gasification of the foam model 8 enters the vacuum box 42 and then enters the buffer device through the pipeline, the waste gas in the buffer device enters the filter tank 6 again to react with the filter liquor to remove harmful substances, and finally the waste gas is discharged through the vacuum pump 7 or is treated in the next step. The speed that foam model 8 is heated the gasification is very fast, buffer can save partly waste gas temporarily to avoid too fast waste gas speed to cause and react with the filtrate incompletely. After the buffer device is arranged, the buffer device stores a part of waste gas and then gradually enters the filter tank 6, so that the reaction is more thorough.
Preferably, the buffering device comprises an inner cylinder 51 and an outer cylinder 52, the outer cylinder 52 is coaxially sleeved on the inner cylinder 51, a sealing ring 512 is arranged between the inner cylinder 51 and the outer cylinder 52, the outer cylinder 52 and the inner cylinder 51 enclose a buffering cavity, the volume of the buffering cavity changes along with the axial movement of the outer cylinder 52 along the inner cylinder 51, the inlet end of the buffering device is formed on the inner cylinder 51, the outlet end of the buffering device is formed on the outer cylinder 52, and the buffering cavity is communicated with the inlet end and the outlet end of the buffering device. After the waste gas is generated, the inner cylinder 51 and the outer cylinder 52 are jacked up under the pressure action of the quickly generated waste gas, the outer cylinder 52 slides relative to the inner cylinder 51, the volume of the buffer cavity is enlarged, and part of the waste gas is contained in the buffer cavity. Along with the suction action of the vacuum pump 7, the waste gas in the buffer cavity gradually enters the filter tank 6, the outer cylinder 52 retracts relative to the inner cylinder 51, and the volume of the buffer cavity is reduced.
Preferably, a limiting fixture block 511 is arranged on the outer wall 14 of the inner cylinder 51, a limiting snap ring 521 is connected to the lower end surface of the outer cylinder 52 through a bolt (not shown in the figure), and when the outer cylinder 52 moves to the maximum position relative to the inner cylinder 51, the limiting snap ring 521 abuts against the limiting fixture block 511. The limiting fixture block 511 and the limiting snap ring 521 limit the maximum displacement of the outer cylinder 52, and prevent the inner cylinder 51 and the outer cylinder 52 from being separated from each other.
Preferably, the lost foam casting production system further comprises a white mold pre-drying device, wherein the white mold pre-drying device comprises a drying tunnel 1, an air inlet pipe 11, a conveying track 12 and a conveying trolley 2; a conveying rail 12 is arranged in the drying tunnel 1, the foam model 8 is placed on the conveying trolley 2, and the conveying trolley 2 moves in the drying tunnel 1 along the conveying rail 12; the drying tunnel 1 comprises an inner wall 13 and an outer wall 14, an air guide cavity 15 is formed between the inner wall 13 and the outer wall 14, the air inlet pipe 11 is connected to one side of the outlet end of the drying tunnel 1 and communicated with the air guide cavity 15, and a plurality of air outlet units distributed at intervals along the length direction of the drying tunnel 1 are formed on the inner wall 13 of the drying tunnel 1.
The foam model 8 is placed on the conveying trolley 2, and the conveying trolley 2 reaches the outlet end from the inlet end of the drying tunnel 1 along a track; the hot drying air enters the air guide cavity 15 from one side of the outlet end of the drying tunnel 1 through the air inlet pipe 11 and is discharged through the air outlet unit on the inner wall 13 of the drying tunnel 1. So, foam model 8 that does not dry gets into by the entry end of drying tunnel 1, leaves by the exit end of drying tunnel 1, and continuous has new foam model 8 that treats to dry to enter into drying tunnel 1, and foam model 8 that also continuous has the stoving completion leaves drying tunnel 1, and whole stoving process is continuous and high-efficient.
Preferably, a plurality of guide plates 151 corresponding to a plurality of groups of air outlet units one to one are formed in the air guide cavity 15, one end of each guide plate 151 is connected to the outer wall 14, one end of each guide plate 151, which is far away from the outer wall 14, inclines towards the inlet direction of the drying tunnel 1, and the flow guide area of each guide plate 151 gradually increases from the outlet end to the inlet end of the drying tunnel 1; each group of air outlet units comprises a plurality of air outlet holes 16 distributed along the circumferential direction of the drying tunnel 1. Through setting up guide plate 151 makes different positions the output of the unit of giving vent to anger is more even, avoids being close to the unit output of giving vent to anger of intake pipe 11 is too big, has avoided keeping away from the unit of giving vent to anger of intake pipe 11 does not have the emergence of giving vent to anger almost, guarantees the stoving effect.
Preferably, the conveying tracks 12 are connected end to end, the conveying trolley 2 moves along the conveying tracks 12 in the drying tunnel 1 from the inlet end to the outlet end of the drying tunnel 1, and the conveying trolley 2 moves along the conveying tracks 12 outside the drying tunnel 1 from the outlet end to the inlet end of the drying tunnel 1; the conveying trolley 2 comprises a trolley body, and a white mould placing device which is detachably connected to the trolley body and used for placing the foam model 8 is arranged on the trolley body. The conveying track 12 is arranged in an end-to-end connection mode, so that when the conveying trolley 2 moves to the outside of the drying tunnel 1, a worker can conveniently take off the dried foam model 8 and place the foam model 8 needing drying, and operation convenience and safety are higher.
Preferably, the trolley body comprises a frame 21, wheels 22, a fixed seat 23 and a rotating shaft 24; the white mould placing device is a cylindrical placing cage 25, and a sleeve 251 is fixedly connected to the axis of the placing cage 25; the fixed seat 23 is fixedly connected to the frame 21, and the rotating shaft 24 is rotatably connected to the fixed seat 23; the sleeve 251 of the placing cage 25 is detachably and fixedly connected to the rotating shaft 24; the drying tunnel 1 is internally provided with a rack 18 arranged along the movement direction of the trolley body, the trolley frame 21 is provided with a cylindrical gear 26 which is meshed with the rack 18 and rotates along with the movement of the trolley, and the trolley body is provided with a transmission device for transmitting the rotation of the cylindrical gear 26 to the rotating shaft 24. The trolley body moves along the conveying track 12, the cylindrical gear 26 rotates due to meshing with the rack 18, and then the transmission device drives the rotating shaft 24 to rotate, so that the placing cage 25 rotates along with the trolley body in the process of moving from the inlet end to the outlet end of the drying tunnel 1. This enables the foam pattern 8 to be dried more uniformly by the hot air for drying.
Preferably, the transmission comprises a first bevel gear 271, a second bevel gear 272, a first pulley 273 and a second pulley 274; the first bevel gear 271 is coaxially and fixedly connected with the cylindrical gear 26; the second bevel gear 272 and the first pulley 273 are coaxially and fixedly arranged and rotatably connected to the frame 21, the second pulley 274 is fixedly connected to the rotating shaft 24, a transmission belt 275 is wound around the first pulley 273 and the second pulley 274, and the first bevel gear 271 and the second bevel gear 272 are engaged with each other. The transmission is performed through the first bevel gear 271, the second bevel gear 272 and the first pulley 273 and the second pulley 274. The rotation of the cylindrical gear 26 is realized to drive the rotation of the rotating shaft 24, and thus the rotation of the placing cage 25 is realized.
Preferably, the placing cage 25 comprises a cage body 252, a cage cover 253 and a fixing nut 255, the sleeve 251 is fixedly connected to the cage body 252, a partition plate 254 is formed in the cage body 252, an inner cavity of the cage body 252 is divided into a plurality of placing spaces by the partition plate 254, a through hole is formed in the center of the cage cover 253, the cage cover 253 is sleeved on the rotating shaft 24 through the through hole, the fixing nut 255 is in threaded connection with the rotating shaft 24 and abuts against the cage cover 253 on the cage body 252, and the cage cover 253 covers all the placing spaces. The foam pattern 8 is placed in the placement space, and the cage 253 places the foam pattern 8 to fall out of the placement space.
Preferably, a pushing device 17 for pushing the conveying trolley 2 into the drying tunnel 1 is arranged at the inlet end of the drying tunnel 1. The pushing device 17 abuts against the conveying trolley 2, and the conveying trolleys 2 in the drying tunnel 1 abut against each other, so that the front-to-back pushing is realized. And after the pushing device 17 finishes pushing, retracting, and after the new conveying trolley 2 provided with the foam model 8 to be dried is pushed by a worker in place, pushing the new conveying trolley 2 by the pushing device 17, so that circular pushing is realized.
Preferably, the pushing device 17 comprises a hydraulic cylinder 171, a rotating bracket 172 and a rotating handle 173, wherein the hydraulic cylinder 171 and the rotating bracket 172 are fixedly connected; the rotating bracket 172 is hinged on the fixed bracket 19 outside the conveying track 12, and the rotating handle 173 is fixedly connected on the rotating bracket 172; the rotating bracket 172 has a pushing position and a receiving position, and when the rotating bracket 172 is located at the pushing position, a piston rod of the hydraulic cylinder 171 abuts against the conveying trolley 2; when the rotating bracket 172 is located at the storage position, the hydraulic cylinder 171 and the rotating bracket 172 are located outside the conveying rail 12. In this way, the hydraulic cylinder 171 does not interfere with the movement of the transport trolley 2 along the transport rail 12. When pushing is required, the hydraulic cylinder 171 can also be moved to a corresponding position by the rotating bracket 172.
The utility model also provides a high-efficient environmental protection lost foam casting production technology, including following step:
preparing a foam model 8: preparing a foam model 8 by using steam foaming molding equipment;
and secondly, pre-drying the foam model 8 subjected to steam foaming molding to remove surface moisture.
Thirdly, the foam pattern 8 is placed in the sand box 4, and the molten metal is poured through the pouring pipe 41.
When the molten metal flows through the spiral liquid outlet pipe 411 at the end of the pouring pipe 41, the spiral liquid outlet pipe 411 heats the sand box 4, further removes the moisture on the surface of the foam model 8, and heats the sand box 4 and the vacuum box 42.
Demoulding and cooling to obtain the cast finished product.
Through the pre-drying of the foam model 8 and the drying during the pouring, the drying of the surface of the foam model 8 is ensured, so that the poured product has higher product quality.
Compared with the prior art, the utility model discloses a spiral drain pipe 411 has reduced the velocity of flow of molten metal, can further dry the moisture on foam model 8 surface simultaneously for cast product has better product quality.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (9)
1. A high-efficiency environment-friendly lost foam casting production system comprises a pouring device, wherein the pouring device comprises a pouring pipe, a sand box, a vacuum box and a vacuum pump, and one side of the vacuum box is connected with the vacuum pump through a pipeline; the device is characterized in that the tail end of the pouring pipe is connected with a spiral liquid outlet pipe, and a liquid outlet section of the spiral liquid outlet pipe extends into the pouring channel.
2. The efficient and environment-friendly lost foam casting production system as claimed in claim 1, wherein a driving device for driving the spiral liquid outlet pipe to move up and down is further arranged on the vacuum box.
3. The efficient and environment-friendly lost foam casting production system as claimed in claim 1, wherein the melting point of the spiral liquid outlet pipe is higher than the temperature of the poured molten metal.
4. The efficient and environment-friendly lost foam casting production system as claimed in claim 1, wherein a buffer device and a filter tank are arranged between a vacuum box and the vacuum pump; the filter tank is internally provided with filtrate, an inlet pipeline and an outlet pipeline are also formed on the filter tank, and the lower end of the inlet pipeline is positioned below the liquid level of the filtrate; the inlet end of the buffer device is connected with the vacuum box through a pipeline, the filter tank is connected with the outlet of the buffer device through an input pipeline, and the filter tank is connected with the inlet of the vacuum pump through an outlet pipeline.
5. The efficient and environment-friendly lost foam casting production system as claimed in claim 4, wherein the buffering device comprises an inner cylinder and an outer cylinder, the outer cylinder is coaxially sleeved on the inner cylinder, a sealing ring is arranged between the inner cylinder and the outer cylinder, the outer cylinder and the inner cylinder enclose a buffering cavity, the volume of the buffering cavity changes along with axial movement of the outer cylinder along the inner cylinder, the inlet end of the buffering device is formed on the inner cylinder, the outlet end of the buffering device is formed on the outer cylinder, and the buffering cavity is communicated with the inlet end and the outlet end of the buffering device.
6. The efficient and environment-friendly lost foam casting production system as claimed in claim 5, wherein a limiting clamping block is arranged on the outer wall of the inner cylinder, a limiting clamping ring is connected to the lower end surface of the outer cylinder through a bolt, and when the outer cylinder moves to the maximum position relative to the inner cylinder, the limiting clamping ring abuts against the limiting clamping block.
7. The efficient and environment-friendly lost foam casting production system as claimed in claim 1, further comprising a white mold pre-drying device, wherein the white mold pre-drying device comprises a drying tunnel, an air inlet pipe, a conveying track and a conveying trolley; a conveying track is arranged in the drying tunnel, the foam model is placed on the conveying trolley, and the conveying trolley moves in the drying tunnel along the conveying track; the drying tunnel comprises an inner wall and an outer wall, an air guide cavity is formed between the inner wall and the outer wall, the air inlet pipe is connected to one side of the outlet end of the drying tunnel and communicated with the air guide cavity, and a plurality of groups of air outlet units distributed at intervals along the length direction of the drying tunnel are formed on the inner wall of the drying tunnel.
8. The efficient environment-friendly lost foam casting production system as claimed in claim 7, wherein a plurality of guide plates corresponding to a plurality of groups of the air outlet units one to one are formed in the air guide cavity, one end of each guide plate is connected to the outer wall, one end of each guide plate, far away from the outer wall, inclines towards the inlet direction of the drying tunnel, and the guide area of each guide plate is gradually increased from the outlet end to the inlet end of the drying tunnel; each group of air outlet units comprises a plurality of air outlet holes distributed along the circumferential direction of the drying tunnel.
9. The efficient and environment-friendly lost foam casting production system as claimed in claim 7, wherein said conveying tracks are connected end to end, said transport trolley moves along said conveying tracks from entrance end to exit end of said drying tunnel in said drying tunnel, said transport trolley moves along said conveying tracks from exit end to entrance end of said drying tunnel outside said drying tunnel; the conveying trolley comprises a trolley body, and a white mould placing device which is detachably connected to the trolley body and used for placing the foam model is arranged on the trolley body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922167541.4U CN211539467U (en) | 2019-12-06 | 2019-12-06 | High-efficient environmental protection lost foam casting production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN110976842A (en) * | 2019-12-06 | 2020-04-10 | 福建省神悦铸造股份有限公司 | Efficient and environment-friendly lost foam casting production system and production process |
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Effective date of registration: 20240105 Address after: Room 25-25, No. 2889 Xiang'an East Road, Xindian Street, Xiang'an District, Xiamen City, Fujian Province, 361102 Patentee after: Shenyue (Xiamen) New Energy Technology Co.,Ltd. Address before: 363900 Yintang Industrial Park, Gu Nong farm, Changtai Economic Development Zone, Zhangzhou City, Fujian Province Patentee before: FUJIAN SHENYUE CASTING SHARE Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An efficient and environmentally friendly lost foam casting production system Granted publication date: 20200922 Pledgee: Xiamen Bank Co.,Ltd. Pledgor: Shenyue (Xiamen) New Energy Technology Co.,Ltd. Registration number: Y2024980010339 |