CN107497994A - A kind of molding sand reclaiming device - Google Patents
A kind of molding sand reclaiming device Download PDFInfo
- Publication number
- CN107497994A CN107497994A CN201710846438.5A CN201710846438A CN107497994A CN 107497994 A CN107497994 A CN 107497994A CN 201710846438 A CN201710846438 A CN 201710846438A CN 107497994 A CN107497994 A CN 107497994A
- Authority
- CN
- China
- Prior art keywords
- molding sand
- sand
- regenerating device
- crusher
- vibro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/18—Plants for preparing mould materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/02—Dressing by centrifuging essentially or additionally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0404—Stirring by using vibrations while grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
- B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/10—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by dust separating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/14—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material
- B22C5/16—Equipment for storing or handling the dressed mould material, forming part of a plant for preparing such material with conveyors or other equipment for feeding the material
Abstract
A kind of molding sand reclaiming device provided by the invention, including vibro-crusher, control centre, vertical elevator, regenerating device, sand storage and puddle mixer, control centre's far distance controlled opens vibro-crusher and carries out block molding sand swing crushing, regenerating device is sent into by vertical elevator and further crush separation storage into sand storage, by puddle mixer and binding agent by molding sand reclaiming.The outside of regenerating device sets the second dust removing tube, effectively avoids molding sand dust excessive and damages centrifugal pan, causes the overall damaged of regenerating device, avoid endangering the health of site operation personnel, avoid polluting environment.Tray bottom increase wearing plate is centrifuged inside regenerating device, disc leaf is centrifuged by protecting, reduces centrifugal pan damage, improves centrifugal pan operating efficiency, reduce and change, improve production efficiency.
Description
Technical field
The present invention relates to a kind of casting mold retracting device, more particularly to a kind of molding sand reclaiming device, belong to industrial molding sand
Reproduction technical field.
Background technology
Molding sand is the material for being used for moulding in industry is cast.Molding sand is typically by Foundry sand, moulding sand binder and auxiliary
The Modeling Materials such as thing are added to mix according to a certain percentage.Molding sand presses binding agent difference used, can be divided into clay-bonded sand, waterglass
Sand, cement bonded sand, resin sand etc..With the most of clay-bonded sand, water-glass sand and resin sand.
The molding sand reclaiming device of prior art, mainly including vibro-crusher, vertical elevator, regenerating device, sand storage
Worked with part, the molding sand recyclings that basis can be completed such as puddle mixers.But the molding sand reclaiming device of prior art
Without control centre's unified operation, the cumbersome inconvenience of operating process, and also safety coefficient is low；Molding sand retracting device is on the whole
Only vibro-crusher has dust removing tube, and regenerating device does not have dust removing tube, and dust removing effects are bad；The molding sand recovery dress of prior art
The regenerating device ventilating opening put is through-type, when ventilating opening bore is excessive, causes outside mass air flow to enter machine, so as to reduce
Decontaminate the small dragon of air inside machine, and ventilating opening bore hour can cause machine internal gas flow small, increase the load of motor,
Electrical machinery life is caused to shorten, fragile, the centrifugal pan wearability of the molding sand retracting device regenerating device of prior art is not high, easy to wear
Damage, trouble is changed, also, the sand storage internal reservoir amount of molding sand retracting device is not easy to observe, and sand storage Sand easily occurs
Accumulation is excessive.
In general, the molding sand reclaiming device of prior art is primarily present following defect：First, the type of prior art
Sand reclaiming device does not have control centre, can not be uniformly controlled operation, and integrated intelligent degree is relatively low, it is impossible to remote control
Heart manipulation in system, it is impossible to concentrate manipulation, operating process is cumbersome, and equipment control efficiency is low, and processing safety is poor；It is second, existing
Have that the molding sand reclaiming device dust removing tube quantity of technology is few, and regenerating device does not have dust removing tube, and dust removing effects are bad, harm scene
The health of operating personnel, also easily pollute environment；Third, the centrifugation of the molding sand reclaiming device regenerating device of prior art
Disk wearability is inadequate, the easy wear damage of centrifugal pan, it is impossible to protection motor centrifuge blade well, fiber crops is changed after centrifugal pan damage
It is tired；Fourth, the molding sand reclaiming device of prior art can not observe the molding sand storage capacity inside sand storage, sand storage type is easily caused
Sand wash is excessive；Fifth, the ventilating opening of regenerating device is excessive, outside mass air flow is caused to enter machine, so as to reduce inside machine
Decontaminate the efficiency of air, or ventilating opening is too small that machine internal gas flow can be caused small, increases the load of motor, causes motor
The lost of life, it is fragile, trouble is changed, price is high.
The content of the invention
In view of the shortcomings of the prior art, a kind of molding sand reclaiming device provided by the invention, including vibro-crusher, control
Center, vertical elevator, regenerating device, sand storage and puddle mixer processed, control centre's far distance controlled open vibro-crusher and carry out block
Shape molding sand swing crushing, regenerating device is sent into by vertical elevator and further crush separation storage into sand storage, by mixed
Sand machine and binding agent are by molding sand reclaiming.The outside of regenerating device sets the second dust removing tube, effectively avoids molding sand dust excessive
And centrifugal pan is damaged, the overall damaged of regenerating device is caused, avoids endangering the health of site operation personnel, avoids polluting ring
Border.Inside regenerating device centrifuge tray bottom increase wearing plate, by protect centrifuge disc leaf, reduce centrifugal pan damage, improve from
Cartridge operating efficiency, reduce and change, improve production efficiency.
To reach above technique effect, the technical solution adopted in the present invention is as follows：
A kind of molding sand reclaiming device, including vibro-crusher, control centre, vertical elevator, regenerating device, sand storage and
Puddle mixer, vibro-crusher one end are connected by wire with control centre, and control centre is provided with touching display screen, opened
Control button, jerk control button and stopping control button, the other end of control centre are connected with power supply.
A kind of molding sand reclaiming device, further, swing crushing motor spindle is provided with vibration hold, vibro-crusher
Top is provided with the first dust removing tube.
A kind of molding sand reclaiming device, further, touching display screen include sand warehouse moulding sand reserves display screen.
A kind of molding sand reclaiming device, further, vertical elevator is connected by wire with control centre, vertically
Elevator includes the first vertical elevator and the second vertical elevator, the first vertical elevator bottom front and vibro-crusher
Vibration hold is relative to be connect, and tail end is relative with the top of regenerating device at the top of the first vertical elevator connects, before the second vertical-lift motor spindle
Motor spindle is relative connects with regeneration at end, and tail end connects relatively with sand storage top at the top of the second vertical elevator
A kind of molding sand reclaiming device, ventilating opening and the second dust removing tube further, outside regenerating device are provided with, regenerated
Machine is internally provided with outer barrel, and outer barrel is provided with centrifugal pan, and centrifugation tray bottom is provided with wearing plate, centrifugal pan by wire with
Motor is connected, and motor is connected by wire with control centre.
A kind of molding sand reclaiming device, further, sand storage bottom are connected by conduit with puddle mixer top, sand storage
Interior side is provided with headroom sensor from top to bottom.
A kind of molding sand reclaiming device, further, puddle mixer side are provided with charging aperture, puddle mixer by wire with
Control centre is connected.
Compared with prior art, the advantage of the invention is that：
1st, a kind of molding sand reclaiming device provided by the invention, control centre are provided with touching display screen, open control
Button processed, jerk control button, pause control button, control centre pass through the work operating of remote key-press control machine, integrate intelligence
Energyization is uniformly controlled operation, and operating process is simple, and equipment control efficiency is high, and good operation safety.
2nd, a kind of molding sand reclaiming device provided by the invention, the outside of regenerating device set the second dust removing tube, and second removes
Dirt pipe carries out dedusting inside regenerating device, effectively avoids molding sand dust excessive and damages centrifugal pan, causes the entirety of regenerating device to break
Damage, avoid endangering the health of site operation personnel, avoid polluting environment.
3rd, a kind of molding sand reclaiming device provided by the invention, regenerating device inside centrifugation tray bottom increase wearing plate, from
Cartridge abrasion resistance is small, is easily damaged, Renewal process trouble, and tray bottom increase wearing plate is centrifuged inside regenerating device, passes through protection
Disc leaf is centrifuged, reduces centrifugal pan damage, improves centrifugal pan operating efficiency, reduce and change, improve production.
4th, a kind of molding sand reclaiming device provided by the invention, sand storage set headroom sensor, and sand warehouse moulding sand was accumulated
More or storage is very few all to cause production loss to production, by setting headroom sensor to be monitored sand storage balance information,
Effectively accomplish to monitor sand storage balance information in real time, improve operating efficiency.
5th, a kind of molding sand reclaiming device provided by the invention, sand regenerator external ventilation mouth bore are arranged to original mouth
/ 3rd of footpath, bore is reasonable in design so that its extraneous air of regenerating device and internal contamination air mixture ratio are optimal, reduce
The operating load of motor, while also improve the expulsion efficiency of regenerating device machine internal contamination air.
Brief description of the drawings
Fig. 1 is a kind of structural representation of molding sand reclaiming device provided by the invention.
Description of reference numerals：1- vibro-crushers, 2- control centres, 3- vertical elevators, 4- regenerating devices, 5- sand storages, 6-
Puddle mixer, 7- motors, 11- vibration holds, the dust removing tubes of 12- first, 21- touching display screens, 22- open control button, and 23- is anxious
Stop control button, 24- pause control buttons, the vertical elevators of 31- first, the vertical elevators of 32- second, 41- ventilating openings, 42-
Second dust removing tube, 43- outer barrels, 44- centrifugal pans, 45- wearing plates, 51- headroom sensors, 61- charging apertures.
Embodiment
Below in conjunction with the accompanying drawings, a kind of technical scheme of molding sand reclaiming device provided by the invention is carried out further
Description, allows those skilled in the art to be better understood from the present invention and can be practiced.
Referring to Fig. 1, a kind of molding sand reclaiming device provided by the invention, including vibro-crusher 1, control centre 2, hang down
Straight elevator 3, regenerating device 4, sand storage 5 and puddle mixer 6, the one end of vibro-crusher 1 are connected by wire with control centre 2, are controlled
Center 2 processed is provided with touching display screen 21, opens control button 22, jerk control button 23 and stops control button 24, control
The other end at center 2 processed is connected with power supply.Control centre 2 is worked by remote key-press control machine and operated, integrated intelligent
Operation is uniformly controlled, operating process is simple, and equipment control efficiency is high, and good operation safety.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, the bottom of vibro-crusher 1 is set
There is vibration hold 11, the top of vibro-crusher 1 is provided with the first dust removing tube 12.
Vibro-crusher 1 is used to crush block molding sand waste material, and the molding sand waste material batch of bulk is put into by staff to shake
The vibration hold 11 of the dynamic bottom of disintegrating machine 1, vibro-crusher 1 is opened by control centre 2 and worked, the bottom of vibro-crusher 1 shakes
Dynamic hold 11 carries out vibration crushing to block molding sand waste material, and the vibrating bottom hold 11 of vibro-crusher 1 carries out the to molding sand waste material
Once vibration crushes.
During the 11 swing crushing bulk molding sand of vibration hold of vibro-crusher 1, a large amount of molding sand dust can be produced, pass through setting
First dust removing tube 12 carries out the dedusting of vibration hold 11 of vibro-crusher 1.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, touching display screen 21 includes
Sand warehouse moulding sand reserves display screen.
Control centre 2 receives the sensor information of the inside headroom sensor 51 of sand storage 5, and control centre 2 is by headroom sensor
51 information carries out processing and passes to touching display screen 21, and the molding sand reserves display screen of touching display screen 21 shows sand storage 5
Internal molding sand storage capacity, the molding sand reserves display screen of touching display screen 21 show that the inside molding sand of sand storage 5 stores by percentage
Amount, when the inside molding sand storage capacity of sand storage 5 is in diverse location, the different headroom sensors 51 in the inside of sand storage 5 transmit different information
To control centre 2, control centre 2 is entered by the internal reservoir amount of different feedback of the information sand storages 5 by touching display screen 21
Row display.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, vertical elevator 3 passes through wire
It is connected with control centre 2, vertical elevator 3 includes the first vertical elevator 31 and the second vertical elevator 32, and first is vertical
The vibration hold 11 of the bottom front of elevator 31 and vibro-crusher 1 is relative to be connect, the top tail end of the first vertical elevator 31 with again
The top of life 4 is relative to be connect, and the bottom front of the second vertical elevator 32 is relative with the bottom of regenerating device 4 to be connect, the second vertical elevator 32
Top tail end is relative with the top of sand storage 5 to be connect.
The unlatching control button of control centre 2 is pressed, the vibration hold of vibro-crusher 1 carries out broken work, and first hangs down
Straight elevator 31 carries out lifting work, the vibration hold 11 of vibro-crusher 1 by molding sand it is broken after the completion of, the first vertical elevator
The vibration hold 11 of 31 bottom fronts and vibro-crusher 1 is relative to be connect, the vibration hold 11 of vibro-crusher 1 will it is broken after the completion of
Molding sand be transferred to the bottom front of the first vertical elevator 31, the first vertical elevator 31 is by the molding sand after swing crushing from
The bottom front of one vertical elevator 31 lifts the top tail end to the first vertical elevator 31, the top of the first vertical elevator 31
Portion's tail end is wanted to dock with regenerating device 4, will be broken by lower slide after molding sand lifting is arrived top tail end by the first vertical elevator 31
Molding sand afterwards is transferred in regenerating device 4.
The bottom front of second vertical elevator 32 is relative with the bottom of regenerating device 4 to be connect, and molding sand waste material is carried out second by regenerating device 4
It is secondary it is broken after, lifted to sand storage 5 and stored by the second vertical elevator 32.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, it is provided with outside regenerating device 4 logical
The dust removing tube 42 of air port 41 and second, regenerating device 4 are internally provided with outer barrel 43, and outer barrel 43 is internally provided with centrifugal pan 44, centrifugal pan
44 bottoms are provided with wearing plate 45, and centrifugal pan 44 is connected by wire with motor 7, and motor 7 passes through wire and the phase of control centre 2
Connection.Tray bottom increase wearing plate 45 is centrifuged inside regenerating device, disc leaf is centrifuged by protecting, reduces centrifugal pan damage, carries
High centrifugal pan operating efficiency, reduce and change, improve production.
Regenerating device 4 is to vibrate the molding sand after hold 11 crushes to vibro-crusher 1 further to be collided, and is crushed, then
The ventilating opening 41 for being aerated exhaust is provided with outside life 4 and carries out the second dust removing tube 42 of dedusting, the second dust removing tube
42 carry out dedusting inside regenerating device, effectively avoid molding sand dust excessive and damage centrifugal pan 44, cause the entirety of regenerating device to break
Damage, avoid endangering the health of site operation personnel, avoid polluting environment.
The external ventilation mouth 41 of regenerating device 4 carries out bore redesign, when regenerating device 4 external ventilation mouth, 41 bores are excessive, leads
Cause outside mass air flow to enter inside the machine of regenerating device 4, reduce the efficiency of discharge pollution air inside the machine of regenerating device 4, then
When life 4 external ventilation mouth, 41 bores are too small, the machine internal gas flow of regenerating device 4 can be caused small, increase the operating load of motor 7,
Cause electrical machinery life to shorten, be easily damaged, change trouble, the bore of 4 external ventilation mouth of regenerating device 41 is re-designed as stomodaeum footpath
1/3rd so that its extraneous air of regenerating device 4 and internal contamination air mixture ratio are optimal, and the operating for reducing motor 7 is born
Lotus, while the expulsion efficiency of the machine internal contamination air of regenerating device 4 is also improved, second dust removing tube 42 of the outside of regenerating device 4 is to again
Dust discharge inside the machine of life 4, when regenerating device 4 carries out breaking type sand waste again, can produce a large amount of dust, if not in time will again
The inside dust discharge of life 4, can cause the unstable of centrifugal pan, cause centrifugal pan to damage, second dust removing tube 42 of the outside of regenerating device 4
By dust discharge, protection equipment inside machine.
The internal fracture equipment of regenerating device 4 is outer barrel 43, and outer barrel is provided with centrifugal pan 44, in order to increase centrifugal pan 44
Abrasion resistance, increase wearing plate 45 in the bottom of centrifugal pan 44, the centrifugal pan 44 of regenerating device 4 is driven by motor 7 to be operated, regenerating device 4
Inner sand waste provides for the first vertical elevator 31, the work operating of control centre 2 controlled motor 7, motor 7 drive from
The high-speed rotation of cartridge 44, molding sand waste material further hits against inside the machine of regenerating device 4, it is broken after, arranged at a high speed by centrifugal pan 44
Go out.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, the bottom of sand storage 5 by conduit with
The top of puddle mixer 6 is connected, and the interior side of sand storage 5 is provided with headroom sensor 51 from top to bottom.
Headroom sensor 51 monitors the inside molding sand storage capacity of sand storage 5, and the interior side of sand storage 5 is provided with multiple remaining from top to bottom
Quantity sensor 51, when molding sand, which is constantly accumulated, covers headroom sensor 51, headroom sensor 51 produces different signals, and surplus passes
Unlike signal is passed to control centre 2, the molding sand surplus display module that control centre 2 passes through touching display screen 21 by sensor 51
Show the molding sand storage capacity in sand storage 5.By setting headroom sensor 51 to be monitored sand storage balance information, effectively accomplish in real time
Sand storage balance information is monitored, improves operating efficiency.
As a kind of preferred scheme, a kind of molding sand reclaiming device provided by the invention, the side of puddle mixer 6 be provided with into
Material mouth 61, puddle mixer 6 are connected by wire with control centre 2.
Molding sand in sand storage 5 enters puddle mixer 6, and adding resin, curing agent etc. by charging aperture 61 is stirred,
Carry out molding sand reclaiming.
The basic principles, principal features and advantages of the present invention have been shown and described above.While there has been shown and described that
Embodiments of the invention, for the ordinary skill in the art, it is possible to understand that do not departing from the principle and essence of the present invention
A variety of change, modification, replacement and modification can be carried out to these embodiments, the scope of the present invention is by appended right in the case of god
It is required that and its equivalent restriction.
Claims (7)
- A kind of 1. molding sand reclaiming device, it is characterised in that：Including vibro-crusher (1), control centre (2), vertical-lift Machine (3), regenerating device (4), sand storage (5) and puddle mixer (6), described vibro-crusher (1) one end pass through in wire and the control The heart (2) is connected, and the control centre (2) is provided with touching display screen (21), unlatching control button (22), jerk and controls and press Key (23) and stopping control button (24), the other end of the control centre (2) are connected with power supply.
- A kind of 2. molding sand reclaiming device according to claim 1, it is characterised in that：Vibro-crusher (1) bottom Portion is provided with vibration hold (11), and the first dust removing tube (12) is provided with the top of the vibro-crusher (1).
- A kind of 3. molding sand reclaiming device according to claim 1, it is characterised in that：The touching display screen (21) Including sand warehouse moulding sand reserves display screen.
- A kind of 4. molding sand reclaiming device according to claim 1, it is characterised in that：The vertical elevator (3) is logical Cross wire with the control centre (2) to be connected, the vertical elevator (3) includes the first vertical elevator (31) and second and hung down Straight elevator (32), the first vertical elevator (31) bottom front and the vibration hold (11) of the vibro-crusher (1) Relative to connect, tail end is relative with the top of the regenerating device (4) at the top of first vertical elevator (31) connects, and described second vertically carries Rise that machine (32) bottom front is relative with the regenerating device (4) bottom connects, the second vertical elevator (32) top tail end and institute State relative at the top of sand storage (5) connect.
- A kind of 5. molding sand reclaiming device according to claim 1, it is characterised in that：Set outside the regenerating device (4) Ventilating opening (41) and the second dust removing tube (42) are equipped with, the regenerating device (4) is internally provided with outer barrel (43), and the outer barrel (43) is interior Portion is provided with centrifugal pan (44), and centrifugal pan (44) bottom is provided with wearing plate (45), and the centrifugal pan (44) passes through wire It is connected with motor (7), the motor (7) is connected by wire with the control centre (2).
- A kind of 6. molding sand reclaiming device according to claim 1, it is characterised in that：Sand storage (5) bottom passes through For conduit with being connected at the top of the puddle mixer (6), sand storage (5) interior side is provided with headroom sensor from top to bottom (51)。
- A kind of 7. molding sand reclaiming device according to claim 1, it is characterised in that：Puddle mixer (6) side is set Charging aperture (61) is equipped with, the puddle mixer (6) is connected by wire with the control centre (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846438.5A CN107497994A (en) | 2017-09-19 | 2017-09-19 | A kind of molding sand reclaiming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710846438.5A CN107497994A (en) | 2017-09-19 | 2017-09-19 | A kind of molding sand reclaiming device |
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| Publication Number | Publication Date |
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| CN107497994A true CN107497994A (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710846438.5A Pending CN107497994A (en) | 2017-09-19 | 2017-09-19 | A kind of molding sand reclaiming device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115780729A (en) * | 2023-02-01 | 2023-03-14 | 浙江双金机械集团股份有限公司 | Gravel crushing production line process |
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| CN103521699A (en) * | 2013-10-21 | 2014-01-22 | 青岛和德隆机械有限公司 | Regeneration system of used clay sand |
| CN104550694A (en) * | 2015-01-30 | 2015-04-29 | 青田中天铸造阀门有限公司 | Sand shakeout regeneration system |
| CN206351233U (en) * | 2016-08-16 | 2017-07-25 | 郑开艳 | A kind of new sand preparing machine |
| CN206392796U (en) * | 2016-12-29 | 2017-08-11 | 青岛天汇铸造机械有限公司 | A kind of cooler cooled down for casting model powder |
| CN207494496U (en) * | 2017-09-19 | 2018-06-15 | 襄阳新金开泵业有限公司 | A kind of molding sand reclaiming device |
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| CN115780729A (en) * | 2023-02-01 | 2023-03-14 | 浙江双金机械集团股份有限公司 | Gravel crushing production line process |
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