CN219292681U - Middle injection type pouring system of flywheel of diesel engine - Google Patents
Middle injection type pouring system of flywheel of diesel engine Download PDFInfo
- Publication number
- CN219292681U CN219292681U CN202223422216.6U CN202223422216U CN219292681U CN 219292681 U CN219292681 U CN 219292681U CN 202223422216 U CN202223422216 U CN 202223422216U CN 219292681 U CN219292681 U CN 219292681U
- Authority
- CN
- China
- Prior art keywords
- pouring
- cavity
- flywheel
- channel
- air outlet
- 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.)
- Active
Links
Images
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model belongs to the technical field of casting, and discloses a middle pouring type pouring system of a flywheel of a diesel engine, wherein a pouring cup is arranged at the upper end of a straight pouring channel, the inlet end of a filter cavity is communicated with the straight pouring channel, a filter screen is arranged in the middle of the filter cavity, a slag collecting cavity is arranged at the top of a cavity at the front side of the filter screen, outlets are arranged at the outlet end of the filter cavity, the outlets of the filter cavity are arranged at the top of the cavity at the outlet end and are upwards provided with the same number as that of transverse pouring channels, the transverse pouring channels are of slice strip-shaped structures, the transverse pouring channels are of T-shaped structures formed by inlet channels and outlet channels, the bottom of the front end of each inlet channel is communicated with the outlet of the filter cavity, the rear end of each inlet channel is connected to the middle part of the outlet channel, the bottom of each outlet channel is connected with the inlet end of the inner pouring channel along the length direction of the inner pouring channel, and the outlet end of the inner pouring channel is communicated with a flywheel cavity. The inner runner of the utility model adopts a slice strip-shaped structure, has high and stable filling speed and balanced solidification.
Description
Technical Field
The utility model belongs to the technical field of casting, and particularly relates to a middle injection type pouring system of a flywheel of a diesel engine.
Background
The flywheel of the diesel engine is a thick and large flat circular casting. During casting production, the flywheel casting is easy to have defects of inclusion, shrinkage porosity and the like, and the dynamic balance of the flywheel is affected.
At present, a flywheel pouring system of a diesel engine generally adopts a pouring process of feeding a riser and introducing molten iron into a narrow slot while pressing the riser, and the casting is easy to generate shrinkage porosity defect corresponding to the inside of a casting corresponding to the riser, and the process yield is low due to the larger riser; or the annular cross runner is matched with a plurality of inner runners to feed molten iron, so that the process yield is relatively low, and the cleaning and grinding work amount is increased for the plurality of inner runners.
Therefore, a middle-injection type pouring system of the flywheel of the diesel engine, which has high process yield, few casting defects and capability of reducing the grinding work amount, needs to be designed.
Disclosure of Invention
The utility model aims to provide a middle-pouring type pouring system of a diesel engine flywheel, which has high process yield, few casting defects and capability of reducing the cleaning and grinding work amount, and one set of middle-pouring type pouring system of the diesel engine flywheel can pour 3 flywheel castings at a time.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a middle injection type pouring system of a flywheel of a diesel engine comprises a pouring cup, a straight pouring gate, a filtering cavity, a transverse pouring gate, an inner pouring gate, a flywheel cavity, a plurality of direct air outlet holes and a leading-out air outlet hole; the pouring cup is arranged at the upper end of the straight pouring gate, the inlet end of the filter cavity is communicated with the straight pouring gate from the lower end of the straight pouring gate, the filter screen is arranged in the middle of the filter cavity, the slag collecting cavity is arranged at the top of the cavity at the front side of the filter screen, the outlets of the filter cavity are arranged at the top of the cavity at the outlet end and are provided with the same number as that of the cross pouring gates, and the number of the outlets of the filter cavity is the same as that of the cross pouring gates, the pouring gate is of a slice strip-shaped structure, the cross pouring gate consists of an inlet channel and an outlet channel, the bottom of the front end of the inlet channel is communicated with the outlet of the filter cavity from top to bottom, the rear end of the inlet channel is connected at the middle of the outlet channel, the outlet channel is arranged along the length direction of the cross pouring gate, the bottom of the outlet channel is connected with the inlet end of the cross pouring gate, and the outlet end of the cross pouring gate is communicated with the flywheel cavity; the direct air outlet is arranged at the top of the flywheel cavity, and the lead-out air outlet is arranged at the side of the flywheel cavity and is communicated with the flywheel cavity through the drainage sheet.
The inner runner adopts a slice strip-shaped structure, and has the effects of high and stable filling speed and balanced solidification.
Further, the sectional area proportion relation of the main components of the pouring system is as follows: sigma F Straight line :∑F Transverse bar :∑F Inner part =1.28:1:1.15。
Further, the filter screen is a foam ceramic filter screen. And a filter screen system is arranged behind the sprue, and a foam ceramic filter screen is used for rectifying molten iron, so that the filtering capacity is enhanced, inclusions in the molten iron are reduced, and the purity of the molten metal is improved.
Further, the number of flywheel cavities is 3, and the flywheel cavities are respectively arranged at the left side, the right side and the right rear side of the outlet end of the filter cavity. Each flywheel cavity is correspondingly provided with an inner runner and a cross runner.
The ingate is horizontally arranged on the parting surface of the flywheel cavity. The inner runner is arranged around the outer circumference of the flywheel cavity in an arc shape, and the flowing direction of the molten iron from the inlet end to the outlet end of the inner runner is inclined at an angle relative to the radial direction of the flywheel cavity. The molten iron can flow forward better when entering the die cavity. And a round angle is arranged at the top of the connecting part of the inner runner and the flywheel cavity, so that flushing of molten iron at the connecting part during filling is reduced.
The outlet channel of the cross runner is arc-shaped consistent with the radian of the inlet end of the inner runner, and a fillet is arranged at the joint of one side of the outlet channel of the cross runner, which is close to the flywheel cavity, and the inner runner, so that molten iron can be better guided to flow to the flywheel cavity, and the capability of the cross runner, which is close to the flywheel cavity, for resisting the flushing of molten iron is increased.
The direct air outlet holes and the leading-out air outlet holes are all open air outlet holes. Preferably, each flywheel cavity is provided with 4 direct air outlet holes and 2 extraction air outlet holes, the air outlet holes are symmetrically arranged by connecting the midpoint of the transverse runner with the center point of the flywheel cavity, the 4 direct air outlet holes are uniformly and symmetrically arranged, one direct air outlet hole is close to the near end of the inner runner, the other direct air outlet hole is far away from the far end of the inner runner, and the other two direct air outlet holes are centrally and symmetrically arranged on two sides. The near-end direct air outlet hole close to the inner pouring gate can feed the finally solidified inner pouring gate area after pouring is finished, and the far-end direct air outlet hole far away from the inner pouring gate can better discharge gas separated out from the cavity and low-temperature molten metal and impurities of the advanced filling cavity.
The utility model has the beneficial effects that: according to the diesel engine flywheel casting system structure, after the iron liquid is poured from the straight pouring gate, the iron liquid is filtered and rectified by the filter screen system and then is split into the transverse pouring gate, and then is introduced from the middle of the parting surface of the flywheel cavity through the single-piece-shaped inner pouring gate, so that the filling speed is high and stable, solidification is balanced, shrinkage porosity and inclusion defects of a flywheel casting are not easy to occur, the quality of the flywheel casting is improved, and meanwhile, the cleaning and grinding work amount can be remarkably reduced and the craft yield can be improved by matching the single transverse pouring gate with the single-piece inner pouring gate.
Drawings
Fig. 1 is a schematic diagram of a medium pouring system of a flywheel of a diesel engine according to the present utility model.
Fig. 2 is a schematic top view of the casting system shown in fig. 1.
Fig. 3 is a schematic view of the gating system of fig. 1 with the tundish and sprue removed.
Fig. 4 is a schematic view of the structure of a single flywheel cavity of the casting system shown in fig. 1.
Fig. 5 is a top view of fig. 4.
Detailed Description
The following describes in detail the embodiments of the pouring system for a flywheel of a diesel engine according to the utility model with reference to the accompanying drawings.
Referring to fig. 1, the middle pouring system of the flywheel of the diesel engine comprises a pouring cup 2, a straight pouring gate 3, a slag collecting cavity 4, a filtering cavity 5, a transverse pouring gate 7, an inner pouring gate 6, a flywheel cavity 1, a direct air outlet hole 8, a drainage sheet 10, a leading-out air outlet hole 9 and the like. The sprue 3 is below the pouring cup 2, the inlet end 53 of the filter cavity is positioned at the lower end of the sprue 3, the filter screen 51 is arranged in the middle of the filter cavity 5, and the slag collecting cavity 4 is positioned at the top of the front part of the filter screen. The outlet end 54 of the filter cavity 5 is provided with 3 outlets 52, three flywheel cavities 1 are respectively arranged in the cross gate 7, the inner gate 6 and the flywheel cavities 1, each flywheel cavity 1 is communicated with one outlet 52 of the outlet end 54 of the filter cavity through one inner gate 6 and one cross gate 7, each flywheel cavity is provided with a group of air outlet holes, and each group of air outlet holes comprises four direct air outlet holes 8, two drainage sheets and an outgoing air outlet hole 9.
When molten iron is poured, molten iron is poured into the sprue 3 through the pouring cup 2, and then is filtered and rectified through the filter cavity 5 and then is shunted into the runner 7, and filtered slag is gathered into the slag collecting cavity 4. The molten iron flows into a single sheet-shaped ingate 6 from a transverse pouring gate 7, then flows in from the middle (parting surface) of the flywheel cavity through the ingate 6, part of gas and molten iron can be discharged through a direct air outlet hole 8 in the pouring process, and the other part of gas and molten iron flows to a leading-out air outlet hole 9 through a drainage sheet 10 to be discharged until the pouring is completed.
Sectional area proportion relation of main components of the pouring system: sigma F Straight line :∑F Transverse bar :∑F Inner part =1.28:1:1.15. The molten iron is closed before the cross gate, the cross gate can effectively stop slag, the molten iron is open after the cross gate, and the inner gate can provide sufficient molten iron for filling so as to enable the filling to be stable.
The ingate is horizontally arranged on the parting surface of the flywheel cavity. The inner runner is of an arc-shaped lamellar structure and is arranged around the outer circumference of the flywheel cavity. The outlet end of the ingate is communicated with the flywheel cavity from the side surface.
The runner 7 is of T-shaped construction and comprises two parts, an inlet channel 71 and an outlet channel 72. The bottom of the front end of the inlet channel is communicated with the outlet of the filter cavity from top to bottom, and the rear end of the inlet channel is connected to the middle part of the outlet channel. The outlet channel is in an arc shape consistent with the radian of the inlet end of the ingate, the upper part of the inlet end of the ingate is arranged along the arc shape of the inlet end of the ingate, and the bottom of the outlet channel is communicated with the inlet end of the ingate. The transverse pouring gate has the height of 40mm and the width of 160mm, and can effectively block slag. The molten iron is shunted into the three cross runners after passing through the filter screen system, and the root position of the cross runner, which is close to the flywheel cavity, is provided with the R16mm round angle, so that the molten iron can be better guided to flow to the flywheel cavity, and meanwhile, the capability of the cross runner, which is close to the flywheel cavity, for resisting the flushing of the molten iron is increased.
The R3mm round angle is arranged at the top of the connecting part of the inner runner and the flywheel cavity, so that flushing of molten iron at the connecting part during filling is reduced. The inner runner adopts a lamellar thickness of 4mm and a width of 185mm, the circumferential draft angle is 45 degrees, an included angle formed by connecting short sides of two sides of the inner runner with the middle point of the cross runner and the center point of the flywheel cavity is 47 degrees, an included angle formed by connecting long sides of the inner runner with the middle point of the cross runner and the center point of the flywheel cavity is 27 degrees, and the flowing direction of molten iron from the inlet end to the outlet end of the inner runner is inclined by an angle relative to the radial direction of the flywheel cavity. The molten iron can flow forward better when entering the die cavity. The 1-piece inner runner can reduce the cleaning and grinding work amount.
Four direct ventholes 8 set up the top at flywheel die cavity 1, and two extraction type ventholes 9 set up in the side of flywheel die cavity, communicate with flywheel die cavity through the drainage piece. One of the four direct air outlet holes 81 is arranged at the near end of the connecting line 11 between the midpoint of the cross gate and the center point of the flywheel cavity and close to the inner gate, the other direct air outlet hole 82 is arranged at the far end of the connecting line 11 between the midpoint of the cross gate and the center point of the flywheel cavity and far away from the inner gate, and the other two direct air outlet holes 83 and 84 are symmetrically arranged at the two sides of the connecting line 11 between the midpoint of the cross gate and the center point of the flywheel cavity in a centered manner. The two leading-out air outlets 91, 92 are symmetrically arranged at two sides of the connecting line between the middle point of the cross runner and the center point of the flywheel cavity.
By adopting the structure, the root position of the cross runner, which is close to the flywheel cavity surface, is provided with the R16mm round angle, the draft angle of the periphery of the inner runner is 45 degrees, and the top of the connecting part of the inner runner and the flywheel cavity is provided with the R3mm round angle, so that the iron liquid scouring resistance of the periphery of the inner runner and the round angle can be improved. Four direct ventholes 8 and two extraction formula ventholes 9 are with cross gate central line and flywheel die cavity central point line symmetrical arrangement, near the direct venthole of near end of ingate can feed the ingate region that solidifies last after the pouring finishes, far away from the direct venthole of distal end of ingate can better discharge the gaseous low temperature molten metal and the inclusion that separates out in the die cavity and advance fills the die cavity, the flywheel foundry goods is difficult for appearing shrinkage cavity and inclusion defect, promotes flywheel foundry goods quality, and single cross gate collocation monolithic ingate can show the reduction clear work volume of grinding simultaneously, promotes technology yield.
It should be understood that: the above embodiments are merely illustrative of the present utility model, not limiting, and any utility model that does not fall within the spirit and scope of the present utility model falls within the scope of the present utility model.
Claims (7)
1. A middle injection type pouring system of a flywheel of a diesel engine comprises a pouring cup, a straight pouring gate, a filtering cavity, a transverse pouring gate, an inner pouring gate, a flywheel cavity, a plurality of direct air outlet holes and a leading-out air outlet hole; the pouring cup is arranged at the upper end of the straight pouring gate, the inlet end of the filter cavity is communicated with the straight pouring gate from the lower end of the straight pouring gate, the filter screen is arranged in the middle of the filter cavity, the slag collecting cavity is arranged at the top of the cavity at the front side of the filter screen, the outlets of the filter cavity are arranged at the top of the cavity at the outlet end and are provided with the same number as that of the cross pouring gates, and the number of the outlets of the filter cavity is the same as that of the cross pouring gates, the pouring gate is of a slice strip-shaped structure, the cross pouring gate consists of an inlet channel and an outlet channel, the bottom of the front end of the inlet channel is communicated with the outlet of the filter cavity from top to bottom, the rear end of the inlet channel is connected at the middle of the outlet channel, the outlet channel is arranged along the length direction of the cross pouring gate, the bottom of the outlet channel is connected with the inlet end of the cross pouring gate, and the outlet end of the cross pouring gate is communicated with the flywheel cavity; the direct air outlet is arranged at the top of the flywheel cavity, and the lead-out air outlet is arranged at the side of the flywheel cavity and is communicated with the flywheel cavity through the drainage sheet.
2. The medium pouring system of a flywheel of a diesel engine according to claim 1, wherein the cross-sectional area ratio of the main components of the pouring system is: sigma F Straight line :∑F Transverse bar :∑F Inner part =1.28:1:1.15。
3. The medium-injection gating system of a flywheel of a diesel engine of claim 1, wherein the filter mesh is a ceramic foam filter mesh.
4. The middle pouring system of the flywheel of the diesel engine according to claim 1, wherein the number of the flywheel cavities is 3, the flywheel cavities are respectively arranged at the left side, the right side and the right rear of the outlet end of the filter cavity, and each flywheel cavity is correspondingly provided with a piece of inner pouring channel and a piece of cross pouring channel.
5. The middle pouring type pouring system of a flywheel of a diesel engine according to claim 1, wherein the inner pouring channel is horizontally arranged on a parting surface of the flywheel cavity, the inner pouring channel is arranged in an arc shape around the outer circumference of the flywheel cavity, the flow direction of molten iron from an inlet end to an outlet end of the inner pouring channel is inclined at an angle relative to the radial direction of the flywheel cavity, and a fillet is arranged at the top of a connecting part of the inner pouring channel and the flywheel cavity.
6. The pouring system of claim 5, wherein the outlet channel of the runner is arc-shaped consistent with the radian of the inlet end of the inner runner, and a fillet is arranged at the joint of one side of the outlet channel of the runner, which is close to the flywheel cavity, and the inner runner.
7. The medium-injection type pouring system of a flywheel of a diesel engine according to claim 1, wherein each flywheel cavity is provided with 4 direct air outlet holes and 2 extraction type air outlet holes, the air outlet holes are symmetrically arranged by connecting a midpoint of a cross runner with a central point of the flywheel cavity, the 4 direct air outlet holes are uniformly and symmetrically arranged, one direct air outlet hole is close to a proximal end of an inner runner, the other direct air outlet hole is far away from a distal end of the inner runner, and the other two direct air outlet holes are centrally and symmetrically arranged on two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223422216.6U CN219292681U (en) | 2022-12-21 | 2022-12-21 | Middle injection type pouring system of flywheel of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223422216.6U CN219292681U (en) | 2022-12-21 | 2022-12-21 | Middle injection type pouring system of flywheel of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219292681U true CN219292681U (en) | 2023-07-04 |
Family
ID=86984376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223422216.6U Active CN219292681U (en) | 2022-12-21 | 2022-12-21 | Middle injection type pouring system of flywheel of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219292681U (en) |
-
2022
- 2022-12-21 CN CN202223422216.6U patent/CN219292681U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102527943B (en) | Overhead choke-flow filter buffer type casting pouring technological method | |
| CN111112558A (en) | Baffle sand core casting system for high-precision clutch flange plate | |
| CN209998302U (en) | large diesel engine piston casting sand mold structure | |
| CN101530893A (en) | Gating system for light alloy castings of wheels | |
| CN212945301U (en) | Annular casting pouring gate system | |
| CN219292681U (en) | Middle injection type pouring system of flywheel of diesel engine | |
| CN211304682U (en) | Pouring system of frame | |
| CN202155478U (en) | Pouring system of stamping cylinder | |
| CN103223469A (en) | Gap type pouring system for casting aluminum alloy metal type cylinder cover | |
| CN203437595U (en) | Gating system | |
| CN110666106A (en) | Pouring system and method for oil cylinder | |
| CN216461601U (en) | Pouring system for tractor transmission box body | |
| CN201271737Y (en) | Large casting pouring system with filter | |
| CN213856955U (en) | Wind power hub pouring system | |
| CN205673557U (en) | A kind of die casting of lampshade | |
| CN210146930U (en) | Riser-free pouring system | |
| CN204724801U (en) | Full width type belt pulley with groove casting mould | |
| CN203751247U (en) | Casting and pouring device of engine cylinder cover | |
| CN210387469U (en) | Sand mold structure of differential mechanism shell of electric automobile driving system | |
| CN110695319A (en) | Frame pouring system and method | |
| CN208214233U (en) | A kind of outer housing casting die | |
| CN206716961U (en) | A kind of running gate system for being used to prepare central pulley structural member | |
| CN213613958U (en) | Casting model structure for reducing defects of product air holes and slag holes | |
| CN210208571U (en) | Two-half type filter residue structure for sand casting of horizontal production line | |
| CN212094241U (en) | Baffle sand core casting system for high-precision clutch flange plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |